JP5201504B2 - Spring-driven door - Google Patents

Description

The present invention relates to a spring-operated door.

Since the rotation around the pivot axis of the door does not move the center of gravity up and down and the potential energy does not change, the door rotates with a slight force. Although the door has different rotational resistance depending on its weight, the door rotates only when the force for rotating the door slightly exceeds the resistance.
However, when the door is closed, the latch needs to be recessed in the door so that the door is brought into close contact with the door, and "the force that makes the latch recessed in the door" needs to be added to the force that rotates the door. . Since the rotation is accompanied when the latch is recessed in the door, the “force that causes the latch to be recessed in the door” is larger than the “force necessary to rotate the door”.
At the final stage of closing the door, a large force is required to press the door against the door even if the spring force is weakened and minimized.

That is, the closed door is loaded with "maximum force to push the door against the door" and is stored in the spring as the closed door is opened. It increases as the door is opened with the "maximum force for pressing" at the minimum value.
“The force stored in the spring as the closed door is opened” is greater than the “maximum force for finally pushing the door against the door” and, of course, greater than the force required for the “door rotating force” Therefore, as the closed door is opened, more force than necessary is stored in order to rotate the door, and more than “force necessary to rotate” is applied to the door to be closed.

In the present invention, the closed "force stored as the door is opened" and "force acting on the door to be closed" do not act as much as possible on the rotation of the door when the door is opened or closed. Even if the spring force reaches the maximum value when the door is fully open, the force is insufficient to rotate the door, and even if the spring force reaches the minimum value when the door is closed, In this state, the force is sufficient to press the surface.
In this way, “the force to rotate the door” when opening the door is reduced by setting “the state where the force is insufficient to rotate the door even when the spring force reaches the maximum value when the door is fully opened”. You can make it unnecessary. The present invention rotates the door with the minimum necessary force as if the door is not springed, both when the door is opened and when the door is closed, and presses the door against the door with a strong force. To do.

An object of the present invention is to provide a “door that closes slowly and presses the door against the door with a strong force and that has a low impact sound at the time of closing”. Even if the spring force is strong, the spring force is weakened by moving the action point of the force acting on the door or changing the direction of the force acting on the door. Even so, “the force is sufficient to press the door against the door”.

In other words, when the door is fully opened, the "force that rotates the door" acts near the pivot of the door, so that even if the spring force reaches the maximum value, the force is insufficient to rotate the door. When the door is closed, “the force that rotates the door” is applied to a position away from the pivot axis of the door so that even if the spring force becomes the minimum value, “the door is pressed strongly against the door. To do.
Or, when the door is fully open, by reducing the “distance between the action line of the force that rotates the door and the pivot of the door”, even if the spring force reaches the maximum value, “the force is insufficient to rotate the door. When the door is closed, by increasing the “distance between the action line of the force that rotates the door and the pivot of the door”, even if the spring force reaches the minimum value, It pushes strongly. "

Another object of the present invention is to provide a “door with a low impact noise when closed”, and the door is closed instead of reducing the closing speed by using the viscous resistance and frictional resistance of oil like a normal door closer. This problem is solved without adding a force that resists in the opposite direction to the acting force.

In many door closers, since the drive shaft is rotated by a torsion spring, the force of the torsion spring increases as the door is opened, and the force for opening the door increases as the door is opened. In the door closer of the present invention, as the door is opened, the line of action of the expansion spring force and the drive shaft approach each other, the force for opening the door does not increase as the door is opened, and the force of the expansion spring is increased as the door is closed. Since the action line and the drive shaft move away from each other, the force for closing the door is increased.

Even if the force to open the door does not increase as the door is opened in this way, as long as the door moves with the spring, no matter how weak the spring is acting, the spring will continue to act on the door without loosening, Since the speed of movement accelerates as long as force acts on the moving object, acceleration of the closing speed of the door cannot be avoided, and further acceleration occurs due to a larger force acting when sealed, and the closing speed of the door when sealed is The maximum value will be reached, and it will be accompanied by a big impact when closing.

A product called a door closer usually decelerates by resisting the acceleration of the door caused by the inertia force due to the viscous resistance of oil and other frictional resistance, and the result of further strengthening the spring force to overcome this resistance and rotate It becomes. In this way, the closing force of the door is further accelerated by the stronger spring force, and it is necessary to apply a larger resistance. As a result, the spring force is further increased in order to overcome this resistance and rotate. In this way, the door closer usually rotates the door with more force than necessary, so it feels heavy when opening the door.

Normally, the rotational speed of the door slows down due to the viscous resistance of oil and other frictional resistances like a door closer, but applying a resistance weakens the force that rotates the door by applying a force in the opposite direction to the force that rotates the door. However, the force to rotate the door is insufficient, and the spring must overcome the resistance and store the force to rotate the door.
Although the door is originally designed to resist opening and closing, the door closer usually has resistance to make it difficult to rotate, and even though it rotates with a weak force, let the door rotate with more force than necessary. It is what.

In contrast, the present invention does not decelerate the door by resisting acceleration, but controls the direction of the force acting on the door, thereby reducing the rotation speed of the door so that the force for rotating the door is insufficient. Like to do.
The present invention uses a bearing or the like to make the resistance of rotation of the door as small as possible, thereby minimizing the strength of the spring that rotates the door and minimizing the force when opening the door.
Therefore, the door closer of the present invention not only feels the door heavy when opening the door like a normal door closer, but also does not adopt oil viscosity resistance, so there is no problem of oil leakage and other friction resistance is not adopted. Therefore, there is little wear and it has the characteristics that there is little deterioration of the performance even if used for many years.

Patent Documents 1 to 8 are a series of inventions relating to the “spring-driven door” of the present inventor. Documents other than Patent Document 1 are not disclosed and are not publicly known.

Patent Document 1 The invention shown in FIG. 5 is “attaching a wheel to the top edge of the door and causing the wheel to make a circular movement around the center of rotation of the door. The cam body sliding surface, which is an arc or straight line, is pressed by the spring force and works in the radial direction of the door's circular motion in the range where the door opens and closes, without resisting the door's circular motion. When the door is closed or open, it works in the tangential direction of the circular motion of the door and presses the door against the door. “The sliding surface of the cam body presses the cam wheel attached to the top edge of the door, It does not give exercise.

On the other hand, in the inventions of Patent Documents 3 to 8, the cam body sliding surface is not a circular arc or a straight line as in the invention of Patent Document 1, and the cam wheel is an arm that rotates around the cam wheel rotation shaft. Attached to the tip. "The force that the cam body sliding surface presses the cam wheel" works away from the radial direction of the circular motion of the door, and gives the cam wheel a circular motion. Is to rotate.

In the invention of Patent Document 2, the cam wheel is attached to the tip of “an arm that rotates about a connecting shaft provided at the top end of the door”. While the cam wheels of the inventions of Patent Documents 3 to 8 make a circular motion around the rotation axis, the cam wheel of the invention of Patent Document 2 can freely move on a horizontal plane. In the invention of Patent Document 2, an arm pulls a “connection shaft provided at the top end of a door” so as to reciprocate a passage fixed to a door frame to move a cam wheel, thereby rotating the door. Accordingly, the direction of the line of force acting on the door approaches the pivot axis of the door so that the force to open the door does not increase as the door is opened. In addition, the door is rotated by connecting the arm to a crank fixed to the drive shaft.

The cam wheel of the invention of Patent Document 8 moves more freely on the horizontal plane than the cam wheel of the invention of Patent Document 2, and restrains the cam wheel to move in a path parallel to the closed door. Along the two sliding surfaces attached to the door frame, the door is moved from a position close to the pivot axis of the door as the door is closed.
Constraining the movement of a cam wheel that moves freely on a horizontal plane is to prevent the cam wheel from moving in the desired direction and force it in the direction that you do not want to move it. Will be added. A force obtained by subtracting the restraining force from the spring force acts on the door to rotate the door.

In contrast, the present invention includes two wheels, a wheel that moves along a sliding surface at a position close to the pivot of the door and a wheel that moves along a sliding surface at a position far from the pivot of the door. "The point of action of the force acting on the wheel" discontinuously moves from a position close to the door pivot to a position far from the door pivot, and one wheel is far from the position close to the door pivot as in the invention of Patent Document 8. It does not move continuously.

In the case of the invention of Patent Document 8, “the point of action of the force acting on the door” is moved away from the position close to the pivot axis of the door to the position far away, so that “the force acting on the door” gradually increases. However, in the case of the present invention, the “force acting on the door” disappears at a position close to the pivot of the door, and suddenly the “force acting on the door” is located far from the pivot. Therefore, the door is not accelerated in the parallel process of sealing from the work of rotating the door.

Patent Documents 9 to 15 are inventions having technical features similar to those of the present invention.

The technical feature of “comprising a cam wheel that moves along the cam body sliding surface” is adopted in Patent Documents 9 to 12 and the like. "It moves up and down by the rotation of the cam body", and handles the movement of the center of gravity of the door or lid in the vertical direction.
In contrast, according to the present invention, the cam wheel does not support the weight of the door or lid, and when the door rotates, the center of gravity of the door moves on a horizontal plane and the center of gravity does not move in the vertical direction, and the potential energy does not change. .

In Patent Document 13, “the tip of a lever that rotates about a connecting shaft provided at the top end of a door” moves in a “passage parallel to the closed door” to rotate the door. The direction in which the lever pulls the connecting shaft at the top of the door is toward the door pivot when the door is closed, and the force that seals the door works weakly no matter how strong the spring is, and that much force when opening the door Is required.
On the other hand, in the present invention, the cam wheel moves in the passage, and the line of action of the force acting on the door is a straight line passing through the rotation axis of the wheel and the “contact point between the cam wheel and the passage”. It is neither the direction nor the axial direction of the arm on which the cam wheel is mounted. In the present invention, the force acting on the door works in a direction perpendicular to the door.

Patent Documents 14 and 15 alleviate the impact when the door closes by attaching a speed reducer to the part to which the latch is attached. The countering force is applied. On the other hand, the present invention attempts to reduce the spring force by reducing the resistance of the latch that resists the rotation of the door in order to set the force for sealing the door smaller.
The present invention decelerates the door that rotates to the extent that it does not stop. These prior arts relating to door closing devices, not limited to drive devices and speed reducers, do not deal with “doors that rotate to the extent that they do not stop”.

A constant static friction force acts on the door everywhere, and the force slightly exceeding this static friction force is the “minimum rotational force necessary and sufficient for the stationary door to start moving”. The door of the present invention rotates with a force slightly exceeding this static frictional force everywhere.
Even if the door is tightly sealed by storing a force much larger than this "force slightly exceeding the static friction force" in the spring, it will act weakly on the door rotation by changing the direction in which the force acts. Thus, the speed is reduced without using a resistance, and the “necessary to close the door slowly and tightly seal the door” is solved by not increasing the force required to open the door.

A moving frictional force and air resistance smaller than the maximum static frictional force act on the rotating door, and the rolling friction of the wheel moving on the sliding surface is loaded on this. When these forces and the spring force balance, the rotation of the door becomes a constant speed motion without acceleration. The door of the present invention is "rotated with a force that can barely move without stopping, so it does not accelerate by moving at a constant speed in balance with the above-mentioned kinetic friction force, air resistance and rolling friction.

JP 2006-306359 escape device Japanese Patent Application No. 2007-087561 Spring door Japanese Patent Application No. 2007-198248 Door opener that opens and closes Japanese Patent Application No. 2007-265603 Relay to Japanese Patent Application No. 2007-319541 sealing device Japanese Patent Application No. 2008-023894 Rotating and sealing cam body sliding surface Japanese Patent Application No. 2008-054659 Sliding surface of cam body and relay Japanese Patent Application No. 2008-101249 slider crank JP 62-59785 A JP-A-9-158604 JP 2006-145068 A Shokai 61-86732 JP-A-9-177425 JP 2003-286787 A Japanese Patent Application No. 2006-144419

Patent Document 1 relates to a circular or straight cam body sliding surface in which a strong force is applied only when a door is sealed.
Patent Document 2 relates to a door in which a wheel is attached to the tip of an arm that pulls the door, and the wheel moves along a sliding surface provided on a door frame.
Patent Document 3 relates to a spring mechanism in which a strong force is applied only when a door is sealed, and a speed reducer that does not use resistance.
Patent Document 4 is a device that seals while decelerating, and relates to a door that reduces resistance when opening a closed door.
Patent Document 5 relates to a relay that converts a door rotating device to a sealing device and a brake that converts inertial force into braking force.
Patent Document 6 relates to a rotation transmission mechanism including a cam body sliding surface and a cam wheel that provide a constant rotational force and a sealing force that changes rapidly.
Patent Document 7 relates to a rotation transmission mechanism provided with a cam body sliding surface and a cam wheel for relaying from a device that decelerates and rotates just before a door is closed to a device that is sealed.
Patent Document 8 relates to a door that is closed by applying a strong force after rotating the cam wheel while moving it away from the vicinity of the pivot of the door.

On the other hand, the present application relates to a device that includes a rotating device provided near the pivot of the door and a sealing device provided far away, and seals strongly while decelerating.

The present invention is a device that "rotates the door at a low speed, reduces the impact at the time of closing, and tightly seals". The door of the present invention is rotated at a low speed by applying a spring force as small as possible. Therefore, there is not enough power to seal the door when closed.
“How to apply a large force to the door when closed” becomes a challenge, and “how to reduce the impact” when closed.

The present invention is a device for rotating a door at a low speed and rotating the door at a low speed by causing the spring force to act on a position close to the pivot of the door and transmitting the spring force to the door. A device that closes the door and closes the door tightly by closing the rotating device and spring force acting close to the door's pivot to transmit the spring force to the door. Consists of a sealing device that starts when the door is stopped or close to stopping, and a biasing device that uses a spring to apply a large force to the door when it is closed. It will alleviate the impact and seal tightly. "

As shown in FIG. 1, the rotating device having a feature that stops or closes the door immediately before closing is as shown in FIG.
“Rotating body J rotatably supported by rotating body rotating shaft Q provided on door frame W, and connecting shaft P provided at the tip of rotating body J and connecting shaft C provided on door D are connected. With link A,
The rotating body J is a link device in which the door is rotated by the spring biasing means, and the door pivot O, the connecting shaft C, and the connecting shaft P are just before the door is pressed against the door. The doors are arranged in a straight line "

As shown in FIGS.
“A link that connects a rotating body J that is rotatably supported by a rotating body rotating shaft C provided on the door D, and a connecting shaft P that is provided at the tip of the rotating body J and a connecting shaft Q that is provided on the door frame. A, wherein the rotating body J is rotated by a spring biasing means to rotate the door, and the door pivot O and the connecting shaft Q immediately before the door is pressed against the door. The door characterized in that the connecting shaft P is arranged in a straight line "
The rotating body rotation axis C in FIG. 2 is the rotating body rotation axis Q in FIG. 24, and the connection axis Q in FIG. 2 is the joining axis Pw in FIG.

As shown in FIG. 2 or FIG.
“A rotating body J that is rotatably supported by a rotating body rotating shaft Q provided on the door D, and a link A that connects a connecting shaft P provided at the tip of the rotating body and a connecting shaft C provided on the door frame. Or a link that connects a rotating body J that is rotatably supported by a rotating body rotating shaft Q provided on the door frame W, and a connecting shaft P provided on the distal end of the rotating body and a connecting shaft C provided on the door D. With A,
In the link device in which the rotating body J is rotated by a spring biasing means and the door rotates, it hits the joint axis between the link A and the rotational body J or the joint axis between the link A and the door D, and G is applied. The door is characterized in that the rotation of the link A around the joint axis is restrained by the contact immediately before the door is pressed against the door.
FIG. 2 shows a link that connects a rotating body J that is rotatably supported by a rotating body rotating shaft Q provided on the door D, and a connecting shaft P provided on the distal end of the rotating body and a connecting shaft C provided on the door frame. With A "
3 and 4 show that "a rotating body J that is rotatably supported by a rotating body rotating shaft Q provided on the door frame W, a connecting shaft P provided at the distal end of the rotating body, and a connecting shaft C provided on the door D. With link A to be connected "

In the rotating device as shown in FIGS.
"A door on which the rotating shaft Q is movably attached to the door frame W or the connecting shaft C is movably attached to the door"
5 and 23, the rotary body J is attached to the door frame W, but the door shown in FIG. 2 is attached to the door as shown in FIG. In this case as well, if the rotation of the rotating body J is not reversed, the rotation of the rotating body J does not continue unless the rotation is reversed, so that the “rotating body rotating shaft Q is movably attached to the door frame W or connected shaft C. ”Is a door that is movably attached to the door”, the subsequent rotation of the link device continues even when the rotating body J stops rotating.

As shown in FIG.
“Elongated hole provided in the door frame by the wheel B mounted on the rotating shaft Ib of the wheel provided at the front end of the rotating body J rotatably supported around the rotating body rotation axis Q fixed to the door frame A door that moves along Dh,
Or a wheel B mounted on a rotating shaft Ib of a wheel attached to the door along a long hole Dh provided in the rotating body J,
The door in which the movement of the wheel is restrained at the end of the long hole Dh "
In FIG. 6, even if J is a door and Dh is attached to the rotating body, it is established. Further, in FIG. 6, the position of the rotating body rotation axis Q is on the door pivot axis O side of the long hole Dh. Restrained at one end.

As shown in FIGS.
“Axis rotatably around a connection axis C fixed to the door along a long hole Dh provided in the rotary body J rotatably supported around the rotary body rotation axis Q fixed to the door frame A door on which a wheel B mounted on a rotating shaft Ib of a wheel provided at a tip portion of a link A to be supported is moved;
Alternatively, the wheel B attached to the rotating shaft Ib of the wheel provided at the tip of the rotating body J rotatably supported around the rotating body rotating shaft Q fixed to the door frame is fixed to the door. A door that moves along a long hole Dh provided in a link A that is rotatably supported around an axis C, and the angle formed by the center line of the arm and the long hole is an obtuse angle. A door that allows the wheel to move along the slot when the wheel stays at the end of the slot and has an acute angle.
In FIG. 8, the rotating body rotates about the rotating body rotation axis Q fixed to the door frame. However, even if the rotating body rotating shaft Q is fixed to the door and the rotating body rotates about the rotation body, the same holds true.

As shown in FIGS.
“The connecting shaft P provided at the tip of the rotating body J rotatably supported around the rotating body rotating shaft Q fixed to the door frame and the connecting shaft C provided with the door are connected by two links. Door to do "
Since the door rotates in the opening direction in the process from just before closing to closing, the door is temporarily stopped when the rotation direction of the door changes.

As shown in FIGS.
“The connecting shaft P provided at the tip of the rotating body J rotatably supported around the rotating body rotating shaft Q fixed to the door frame and the connecting shaft C provided with the door are connected by two links. The door connected to the rotating body J of the two links moves along the wheel mounted on the rotating shaft Ib of the wheel fixed to the door frame.
In the process from just before closing to closing, the link connected to the connecting shaft C of the two links changes direction from a state parallel to the closed door to a state orthogonal to the closed door. Therefore, when the rotation direction of the door changes, the door is temporarily stopped.

A device that strongly conveys the force of the spring to the door and tightly seals the door,
As shown in FIGS.
“The sliding surface on which the wheel B attached to the rotating shaft Ib of the wheel provided at the tip of the rotating body J rotatably supported around the rotating body rotating shaft Q fixed to the door frame is attached to the door. A wheel B attached to a rotating shaft Ib of a wheel provided at the tip of a rotating body J that is supported rotatably around a rotating body rotating shaft Q that presses K or is fixed to the door is a door. A door that presses the sliding surface K attached to the frame to press the door against the door;
The door that presses the door against the door so that the contact point b between the wheel B and the sliding surface, the wheel rotation axis Ib, and the rotating body rotation axis Q approach a straight line.

As shown in FIGS.
“The sliding surface K that is rotatably supported around the rotating body rotation axis Q fixed to the door frame moves along the wheel B that is mounted on the rotation axis Ib of the wheel provided on the door. And
Alternatively, the sliding surface K rotatably supported around the rotating body rotation axis Q fixed to the door is moved along the wheel B mounted on the rotation axis Ib of the wheel provided on the door frame. And
The sliding surface K is a door that presses the wheel B to press the door against the door,
The door that presses the door against the door so that the contact point b between the wheel B and the sliding surface, the wheel rotation axis Ib, and the rotating body rotation axis Q approach a straight line.

As shown in FIG.
A door in which the shape of the sliding surface K is an involute vortex

As shown in FIG. 20, a door in which the direction of a straight line connecting the contact point b between the wheel B and the sliding surface and the rotation axis Ib of the wheel is one direction.

As shown in FIGS. 21 and 22, “Rotating body JJ is connected to joint shaft QQ provided at the tip of rotating body J rotatably supported around rotating body rotating shaft Q fixed to the door or door frame. The sliding surface K provided at the tip of the rotating body JJ revolves around the rotating body rotation axis Q while revolving around the rotating body JJ while rotating on the rotating body JJ. The direction of the straight line connecting the contact point b with the sliding surface and the rotational axis Ib of the wheel gradually changes from the direction toward the pivot axis O of the door to the closed door, and the sliding surface K presses the wheel B. And then press the door against the door "
“A door on which a rotating shaft Q, on which a sliding surface K is rotatably supported, is movably attached to a door or door frame”

As shown in FIGS. 23 to 26, “the arm Ab is connected to the rotary shaft Ia provided at the tip of the rotary body J that is rotatably supported around the rotary body rotary shaft Q fixed to the door or door frame. The wheel B mounted on the rotating shaft Ib of the wheel provided at the tip of the arm Ab simultaneously presses the sliding surface Kd attached to the door and the sliding surface Kw attached to the door frame to press the door against the door. A door,
The wheel is a door that presses the door against the door so that the rotation axis Ib, the rotation axis Ia, and the rotation axis Q of the wheel come close to each other, and the door is strongly sealed by the wedge effect.

As shown in FIGS. 13 to 18, a door provided with a spring for connecting the door and the door frame and the sealing device.

As shown in FIGS. 13 to 18, a door in which one fulcrum of the spring connecting the door and the door frame is connected to the rotating body.

As shown in FIGS. 23 to 28, a door including any one of the rotating devices and any one of the sealing devices.

The rotation speed of the rotation device of “the door including any one of the rotation devices and any of the sealing devices” is such that the rotation of the door stops when the latch attached to the door comes into contact with the door frame. A door with a sealing device that starts to operate just before the door closes

As shown in FIGS. 29 to 32 and FIG. 41, “the wheel Bf which rotates the door by moving along the sliding surface K close to the pivot axis O of the door is attached to the end portion close to the pivot axis O of the door. A door provided with a moving body that mounts a wheel Bb that gives rotation to the door by moving along a sliding surface K far from the pivot axis O of the door at the end far from the pivot axis O of the door.

The end of the sliding surface K close to the door pivot O, which gives rotation to the door by moving along the wheel Bf close to the door pivot O, with the mounting of the rotating device or sealing device wheel and sliding surface reversed. It is also established for a door equipped with a moving body that is mounted on the end and mounted on the end far from the door pivot O by a sliding surface K that rotates the door by moving along the wheel Bb far from the door pivot O. To do.

As shown in FIGS. 33 to 40 and 41, “the wheel Bf that rotates the door by moving along the sliding surface K close to the pivot axis O of the door is attached to the end portion close to the pivot axis O of the door. A door provided with a rotating body that attaches a wheel Bb that gives rotation to the door by moving along a sliding surface K far from the pivot axis O of the door at the end far from the pivot axis O of the door.

The end of the sliding surface K close to the door pivot O, which gives rotation to the door by moving along the wheel Bf close to the door pivot O, with the mounting of the rotating device or sealing device wheel and sliding surface reversed. It is also established for a door equipped with a rotating body that is mounted on the door and mounted on the end far from the door pivot O by sliding along the wheel Bb far from the door pivot O to move the door. To do.

The “drive shaft driven by a spring” is rotated by “a spring mechanism that rotates a door with a small force and exerts a large force at the moment of sealing the door”. Examples of the spring mechanism are shown in FIGS. And shown in FIG. “A spring mechanism that exerts a large force at the moment of rotating the door with a small force and sealing the door” is “a small spring that works only when the door is rotated” and “a large force that works only at the moment of sealing the door” The length of the former is changed only when the door is rotated, and the latter is changed only when the door is sealed.

The mechanism of the spring shown in FIG. 40 is “a drive shaft attached to the door frame, a guide fixed to the drive shaft and having a convex outer edge portion and a distance between the outer edge portion and the drive shaft depending on the location, A rotation-side support shaft provided at the end, a fixed-side support shaft attached to the door frame, and a spring having the rotation-side support shaft and the fixed-side support shaft as fulcrums at both ends,
The distance between the drive shaft and the rotation side support shaft is sufficiently larger than the distance between the rotation shaft and the outer edge of the guide, and when the rotation side support shaft revolves around the drive shaft while stretching the spring, The shaft core of the spring gradually approaches from a position away from the guide, and the rotation side support shaft further rotates around the drive shaft so that the spring is stretched while being wound around the guide. A spring mechanism designed to generate a rotational force around an axis,
Rotation around the drive shaft when the guide rotates when the guide shaft rotates away from the guide compared to the rotational force around the drive shaft when the shaft core wire contacts the guide Spring mechanism designed to increase force "

The mechanism of the spring shown in FIG. 42 is “a drive shaft attached to the door frame, a rotating body fixed to the driving shaft, a rotating support shaft provided at an end of the driving shaft of the rotating body, and a door frame. A fixed support shaft that is attached and is attached to the opposite side of the drive shaft, a link that is connected by a connecting shaft, a spring, and a contact that contacts one side of the link;
The link includes the connecting shaft at one end and a connecting shaft at the opposite end, and when the connecting shaft is rotatably supported by the rotating support shaft, the link connecting shaft and the link The distance between the connecting shaft and the drive shaft is set so that the distance between the connecting shaft and the drive shaft, and the contact is attached to the rotating body.
Alternatively, when the connecting shaft on the opposite side of the connecting shaft of the link is rotatably supported by the fixed support shaft, the distance between the connecting shafts at both ends of the link is between the fixed support shaft and the rotating shaft. And the above contact is attached to the door frame,
When the rotating body rotates, the rotation of the link is stopped by the contact until the rotation of the rotating body, and the contacted state is maintained and the connecting shaft is kept at the position of the rotating shaft. So that the spring does not expand and contract,
From the middle of rotation of the rotating body, the link and the contact are separated from each other, the spring extends and contracts so that the connecting shaft is separated from the position of the rotating shaft, and acts on the rotating body from the middle of rotation. Spring mechanism characterized by

The mechanism of the spring illustrated in FIGS. 43 to 47 is “the wheel is attached to the link, and after the link is separated from the hit, the wheel moves along a sliding surface attached to the door frame, thereby Keeping the shaft in the position of the rotating shaft so that the spring does not expand and contract,
Alternatively, after the sliding surface is attached to the link and the link is separated from the contact, the sliding surface moves along a wheel attached to the plate so that the connecting shaft is held at the position of the rotating shaft. So that the spring does not expand and contract,
The rotating body further rotates, and the wheel attached to the link is separated from the sliding surface attached to the door frame, or the sliding surface attached to the link is separated from the wheel attached to the door frame, and the connecting shaft is separated from the position of the rotating shaft. The spring mechanism is characterized in that the spring expands and contracts away from each other and acts on the rotating body from the middle of rotation.

The mechanism of the spring shown in FIG. 40 is “a rotating body fixed to a driving shaft provided on the door frame, an arm rotatably supported around a supporting shaft provided on the rotating body, A wheel mounted on the tip, a sliding surface provided on a door frame along which the wheel moves, and a spring that rotates the rotating body around a drive shaft;
The wheel is provided on the door frame so that the arm stands upright on a sliding surface provided on the door frame and prevents the rotation of the rotating body around the drive shaft so that the spring does not expand and contract. The arm that has been upright by moving along the sliding surface is rotated around a support shaft provided on the rotating body, the rotating body is rotated about the drive shaft, and the spring is Spring mechanism characterized by acting on rotating body "

Doors installed indoors rotate easily even with weak springs, and weak springs do not have sufficient sealing force after closing the doors. Thus, there is no difference between the spring force required to rotate the door and the force required to seal. In addition, an inertial force always acts immediately before closing the door, and in the case of a heavy door, the inertial force that attaches to the door immediately before closing increases, so the door is sealed without any problem. In the case of a heavy door, if the closing speed of the door is set to a speed that stops or does not stop, it becomes a problem that it is too slow and too slow. Especially when it is necessary to print a lock after closing, such as a front door, you want it fast.
Therefore, it can be said that a heavy door is easier to solve the problem of the present invention than a light door.
The door closer of the present invention can be used for an entrance door, but is also suitable for an indoor door.
If it does not open again for a while after entering and exiting like a front door, it will not be so painful even if a large force is required to open it by installing a door closer. Although we feel the door with the door closer attached, we are used to it and are not aware of it, so we do not feel inconvenienced.
However, for indoor doors that are frequently used, attaching a normal door closer makes the door feel heavy when opened, which is inconvenient. There is only one entrance door in a building, and although there are several times as many interior doors as there are entrance doors, there is no door closer attached to the interior doors. This is because even if a normal door closer is “slowly closed and tightly sealed”, the door feels heavy when opened, but the normal door closer is loaded with a strong spring and the indoor door The frame is not strong enough to support the force of a strong spring.

For this reason, a normal door closer cannot be attached to an indoor door frame. A door closer attached to the outer wall like a front door can support a door closer that has a strong frame that attaches the door closer and operates with a strong spring, but if it is installed indoors, the attachment part seems to be wooden. In addition, since the strength of the frame is weak and the frequency of use is high, the frame of the mounting portion is broken or the mounting bolts are pulled out. Since it does not operate with the strong spring of the present invention, the reaction force received by the door during rotation of the door is small, and it can be attached to a weak frame. The door closer of the present invention does not feel heavy when the door is opened, and not only does it feel different from the case where the door closer is not attached, but also the door moves with a weak spring, so it should be attached to an indoor wooden door frame Can be installed and will not fall out even if installed.
In addition, indoor doors are lower than entrance doors, and many of the normal door closers operate in an area where most of the equipment is sandwiched between the door and door frame. The result is that an object is placed. The door closer of the present invention can be attached to the outer surface of the door that does not face the door frame of the door, and the device does not enter the area sandwiched between the door and the door frame, so that it does not interfere with the person passing through the opening.

The drive unit of the present invention provides a drive unit that rotates at a constant speed like an electric motor by adopting a rotation transmission mechanism characterized in that the cam wheel moves on the sliding surface of the cam body. It is. However, the door closer of the present invention is moved by a spring, and the spring shrinks in an instant when no load is applied, and continues to operate without loosening, so it is difficult to rotate the door at a constant speed, It is difficult to solve the problem.
For example, in the transmission mechanism in which the drive unit and the driven unit of the present invention are connected by one or two links, the driven unit rotates slightly with respect to the large rotation of the drive unit just before the door closes. However, the drive unit rotates in an instant and almost no deceleration effect is recognized. In other words, in a mechanism that moves by a spring, the speed reduction effect due to the speed ratio cannot be expected.
In the transmission mechanism in which the driving unit and the driven unit of the present invention are connected by two links, if the driving unit that rotates the door is an electric motor, there is an effect of opening, stopping, or decelerating before closing. As described above, when the door closer moved by the spring of the present invention is moved by the “electric motor rotating at a constant speed”, various effects can be expected.

In FIG. 1, a first rotating body D is rotatably supported around a first rotating shaft O, and a second rotating body J is rotatably supported around a second rotating body rotating axis Q. The link A connects a connecting shaft C provided at the tip of the first rotating body and a connecting shaft P provided at the tip of the second rotating body, and the second rotating body J is indicated by an arrow in the figure. When rotating in the direction B, the first rotating body D rotates in the direction of arrow B in the figure. Further, when the second rotating body J rotates in the direction opposite to the direction of arrow A in the figure, the first rotating body D rotates in the direction opposite to the direction of arrow B in the figure.
In FIG. 1, the rotating body rotation axis Q is provided on the door frame, the connection axis C is provided on the door, and the rotating body J is mounted on the door frame. The rotating body J is rotated by a spring biasing means described in the embodiments of FIGS.

In FIG. 1, the rotation of the second rotating body J is transmitted to the first rotating body O, but considering the case where the first rotating body D rotates, the second rotating body J rotates. As described above, the rotation is transmitted regardless of which of the first and second rotating bodies D and J is the driving side and which is the driven side, and which direction is the left or right.
1 and in the embodiments shown below, the above transmission mechanism is established in each case. In the embodiment shown in FIG. 1 and the following, the driving side and the driven side are switched simultaneously with the contents shown in the drawing. The contents assumed when the rotation direction is the opposite direction are also widely described.

In FIG. 1, the first rotating body D rotates around the pivot axis O of the door and the second rotating body J rotates around the rotating body rotation axis Q. The state immediately before the door is closed is indicated by a solid line, and the door is fully opened. Each state of the closing process is indicated by a dotted line. The numerical values of the subscripts attached to the door D, the rotating body J, and the link A are 0 when the door is closed.
And the door opening angle with 90 when fully open.
The range (A) shown in FIG. 1B is a range from the time of full opening to just before closing, and the range (I) is a range from just before closing to the time of closing.

In the state indicated by the solid line in FIG. 1A, the axes O, C, and P become a straight line Topc, and the rotation of the link device composed of J, A, and D stops. Further, as indicated by the dotted line, in the process from the fully open state to the closed state, the force Fa pulling the link A to the connecting shaft C of the door is a circular motion whose direction is centered on the pivot O of the door of the connecting shaft C. From the connecting direction, the rotational friction resistance due to the force Fa acts on the pivot axis O of the door. Further, the rotational force of the rotating body J acts strongly on the door D when fully opened, and the rotating force of the rotating body J acts weakly on the door D as it is closed.

The distance Lf between the force action line Fa and the door pivot O is reduced, and the rotational force acting around the door pivot O is reduced if the magnitude of the force Fa is constant. In addition, both the door D and the rotating body J rotate greatly from the fully open state to immediately before closing, but the door D and the rotating body J rotate little before and after the closing. That is, the door D approaches the state immediately before closing shown by the solid line while decelerating, and stops immediately before closing. When the force Ff acts on the door D at a position Df sufficiently separated from the pivot axis O of the door in a state of stopping just before closing, the rotating body J rotates in the direction opposite to the arrow a in the figure, and the door D is shown in the figure. Rotate in the direction of arrow B to close. Rotating body J rotates in the direction of arrow A in the figure and “force Ff that closes the door against the force that keeps axes O, C, and P in a straight line” is “action point Df of force Ff” The further away from the pivot axis O, the smaller it becomes. In the present invention, just before the door is closed, the door is brought into close contact with the door stop Gd even with a small sealing force in a state where the vehicle is stopped while decelerating.

In the case shown in FIG. 1B, the rotating direction of the rotating body J is the opposite direction to that in FIG. 1 (a) and 1 (b), the rotation of the rotating body J and the link A including the door D is stopped immediately before closing, but in FIG. 1 (c), the rotating body continues to rotate until it is closed. I can do it. Further, there are two positions of the connecting shaft P at the time of closing, Po and Po0, and the rotation of the rotating body J from just before the closing to the closing can be in two directions.

FIG. 2 shows the rotation around the connecting shaft C in the direction of the arrow C in the drawing to rotate the door D. The driving side and the driven side in FIG. 1 are interchanged. In FIGS. 2A and 2B, the rotations of the drive units are in opposite directions.
2, the link A is the rotating body J in FIG. 1, the rotating body J is the link A in FIG. 1, and a compressive force acts on the rotating body J in FIG. In this case, if it is assumed that the rotating body J in FIG. 2 rotates in the direction of arrow A in the drawing to rotate the door, the link device in FIG. 2 is the same as the link device in FIG. .

In FIG. 2, the connecting shaft C moves on a circle Ro centered on the door pivot O, and the connecting shaft P moves on a circle Rq centered on the rotating body rotation axis Q.
When the connection axis P is on a straight line Toq passing through the door pivot axis O and the rotary body rotation axis Q, the distance between the connection axis P and the door pivot axis O becomes a maximum, so the intersection of the door D and the link A The angle, that is, the rotation angle Θc of the link A is also maximized. The rotation angle Θc of the link A increases from the time of full opening to just before closing, and decreases when the connecting shaft P passes through the straight line Toq.
This means that the rotation of the link A around the connection axis C changes in the opposite direction, meaning that the rotational force acting around the connection axis C cannot continue to rotate in the same direction, as shown in FIG. Similarly, the rotation of the link device is stopped.

In the case of FIG. 2 (a), the position where the rotation of the link device stops and the door stops is on the door fully open side from the straight line Toq, and in the case of FIG. 2 (b), the position is on the door closing side from the straight line Toq. In the case of FIG. 2B, the position where the rotation of the door stops is stopped at a position closer to the door closing position than in the case of FIG. In both the case of FIG. 1 and the case of FIG. 2, a rapid speed change is not observed before and after the stop position immediately before the door is closed, and the rotational speed of the door gradually decreases to stop.

In the position of D100 where the rotation angle of the door exceeds 90 degrees in FIG. 2B, the rotational force in the direction of arrow C in the figure acting around the connection axis C causes the door to rotate in the direction opposite to the direction of arrow B in the figure. Since the door contacts G100, the door remains stationary when fully open.

The closing device of the embodiment shown in FIG. 3 connects a rotary body J fixed to a rotary body rotary shaft Q and a door D with a link A, and the link A is a connecting shaft P provided at the tip of the rotary body J. And a connecting shaft C provided at the top end of the door D.
In FIG. 3A, the door is fully opened, and in FIG. 3B, the door is closed. FIG. 3 (c) shows the operation of the link device of the connecting portion before and after full opening shown in FIG. 3 (a), and FIG. 3 (d) shows the operation of the link device before and after closing shown in FIG. 3 (b).
When the rotating body J rotates about the rotating body rotation axis Q in the direction of arrow A in the figure, the door D rotates about the pivot axis O of the door in the direction of arrow B in the figure, and the rotation direction of the rotating body J and the door D Are the same.

3A and 3B, the links Ji, Ai, Di (i = 0, 1, 2,...) And the connection axes Pi, Ci (i = 0, 1, 2,...) Indicated by dotted lines. -) Indicates the movement of the position of each link and each connecting axis that changes from moment to moment. The subscript i (i = 0, 1, 2,...) Means the rotation angle from the time of closing the door. The door closing time is 0, increases as the door opens, and 7 when the door is fully open. . Subscript i (i = 0, 1) of each link Ji, Ai, Di (i = 0, 1, 2,...) And each connecting axis Pi, Ci (i = 0, 1, 2,...). , 2,... Means the rotation angle from when the door is closed, and Ji, Ai, Di, Pi, Ci having the same suffix i are the rotation angles i (i = 0) from when the door is closed. , 1, 2, ...) indicates the position of each link and each connecting axis

In the operation of the link device of the connecting part before and after fully opening shown in FIG. 3C, when all of the door rotation shaft O and the connection shafts C5 and P5 are on the straight line T5, the rotating body J rotates in the direction of arrow C in the figure. The rotation angle to be maximized. Since the rotating body J is loaded with the force of a spring that rotates in the direction of arrow A in the figure, when the position of the connecting shaft C is in a position moved in two directions with respect to the straight line T5, the rotating body J Rotate to. The rotation of the rotating body J in the direction B is stopped by the contact attached in the vicinity of the connecting shaft P, and the door D6 stops.

FIG. 3D illustrates the operation of the link device at the connecting portion before and after the door is closed. In the process in which the rotating body J rotates from the position of J3 toward the position of J0 and closes the door D, When the body J is in the position J2, the connection axis C is in the position C2, and the rotation axis Q, the door rotation axis Od, and the connection axis C are all on the straight line T1, the connection axis C and the rotation axis Q , And the angle at which the link A and the rotating body J intersect at the connection axis P is the minimum. Further, when the door rotates and the rotating body J is at the position J1, and the connection axis C is at the position C1, the angle Θ at which the link A and the door D intersect at the connection axis C is minimized.
When the rotating body J rotates in the direction of arrow A, and the position of the connection axis C is on the C2 side from C1 toward the position C1, the crossing angle Θ between the link A and the door D decreases, and the position of the connection axis C becomes The crossing angle Θ between the link A and the door D increases when it is on the C0 side from the C1 and moves toward the C0 position.

The adjustment bolt Ga shown in FIG. 3 (b) passes through a through hole provided in the leaf spring Pa attached to the intermediate part of the link A, and a screw is loaded into the through hole so that the position of the tip of the adjustment bolt Ga Enters and exits from the leaf spring Pa and is fixed.
When the position of the connecting shaft C is on the C2 side from C1, if the tip of the adjustment bolt Ga hits the “contact Gb provided on the door”, the position where the tip of the adjustment bolt Ga hits the contact Gb Since the crossing angle Θ between the link A and the door D decreases when going from the position C1 to the position C1, the tip of the adjustment bolt Ga pushes and bends the leaf spring Pa. Resistance to "rotation with".
When the position of the connecting shaft P passes through the position of P1 and goes to P0, the crossing angle Θ between the link A and the door D increases, so that the force that the tip of the adjustment bolt Ga pushes and bends the leaf spring Pa is weakened. The tip of the adjustment bolt Ga is separated from the leaf spring Pa, and the door D hits the door stop G0. When the door is sealed, resistance by the adjusting bolt Ga and the leaf spring Pa is not applied.

"The distance from the position where the tip of the adjusting bolt Ga hits Gb to the position P1" and "the distance from the position where the tip of the adjusting bolt Ga hits away from Gb to the position P1 is equal," The shorter the “distance from the position where the tip of the bolt hits Gb to the position of P1” is shortened, the “range where the tip of the adjusting bolt Ga hits Gb” becomes narrower, and the tip of the adjusting bolt Ga pushes the leaf spring Pa. The amount of pushing and bending is small, and the pushing and bending force is weakened. As a result, the effect of slowing down just before closing the door is reduced.

The rotating direction of the rotating body J shown in FIG. 4 is opposite to the rotating direction of the rotating body of the embodiment shown in FIG. As in FIG. 3, the operation of the link device of the connecting portion before and after fully opening and the operation of the link device of the connecting portion before and after closing will be described.

4C, when the door pivot O and the connection shafts C6 and P6 are all on the straight line T6, the rotating body J rotates in the direction indicated by the arrow C in the figure. The rotation angle is the maximum, and the rotating body J is loaded with the spring force to rotate in the direction of arrow A in the figure, so the position of the connecting shaft C is in the position moved in the two directions with the straight line T6 as a boundary. Sometimes the connecting shaft C moves in the two directions and does not move in the opposite direction. Further, when the position of the connection axis C is at the position moved in the direction B with the straight line T6 as a boundary, the connection axis C moves in the direction B and does not move in the direction opposite to the direction B.

“A line of force for rotating the rotating body J in the direction of arrow A in the drawing to rotate the door” is also the axis of the link A, and the door is rotated when the position of the connecting axis C is near the straight line T5. The force acting line has a small distance from the rotation axis O of the door and there is no force to rotate the door D. However, when the position of the connection axis C moves away from the straight line T, the force to rotate the door D increases. When the position of the connecting shaft C moves away from the straight line T6, the door hits G7 and comes to rest in the fully open state. When the position of the connecting shaft C moves away from the straight line T6 to the lower side, the door hits and hits G0. It starts to rotate.

FIG. 4D illustrates the operation of the link device of the connecting part before and after the door is closed. In the process in which the rotating body J rotates from the position of J3 toward the position of J0 and closes the door D, When the body J is at the position J1, the connecting shaft P is at the position P1, and the rotating body rotating shaft Q, the door rotating shaft Od, and the connecting shaft P are all on the straight line T1, the connecting shaft P and the door rotating shaft The distance from Od is minimized, and the angle Θ at which the link A and the door D intersect at the connection axis C is minimized.
When the rotating body J rotates in the direction of arrow A, and the position of the connection axis P is closer to the P2 side than P1 toward the position P1, the crossing angle Θ between the link A and the door D decreases, and the position of the connection axis P The crossing angle Θ between the link A and the door D increases when it is closer to P0 than P1 and toward the position P0.

4 (b) has a structure similar to that of the speed reduction device including the adjustment bolt Ga shown in FIG. 3 (b), and the crossing angle between the link A and the door D. When Θ decreases and the tip of the adjusting bolt Ga contacts the leaf spring Pa, the leaf spring Pa is pushed and bent, and resistance is applied to “rotation of the link A and the door D on the connecting shaft C”. Thereafter, when the crossing angle Θ between the link A and the door D increases, the force with which the tip of the adjustment bolt Ga pushes and bends the leaf spring Pa weakens, and eventually the tip of the adjustment bolt Ga moves away from the leaf spring Pa, and the door D It will hit G0 per door. When the door is sealed, resistance by the adjusting bolt Ga and the leaf spring Pa is not applied.

In the embodiment of FIGS. 3 and 4, when the rigidity of the leaf spring Pa is increased, the door remains stopped when the hand is released in the “range where the tip of the adjustment bolt Ga hits Gb”.
In the embodiment shown in FIGS. 1 and 2, the door remains stopped when the door is released at the stop position just before closing. In the embodiment of FIGS. 3 and 4, the leaf spring Pa acts in a direction to reduce the “rotating force” of the rotating body, and “the rotating force of the rotating body” is restored as it approaches the sealing immediately before closing. In the first and second embodiments, the “rotating force” itself decreases, and the “rotating body rotating force” acts in the direction of opening the door as it approaches the closing time immediately before closing.
In any case, the present invention starts a new “sealing device provided separately” in the stop state just before closing.

In the embodiment of FIGS. 1 to 4, the rotation of the door is stopped because the rotation around the connection shaft of “one of the links constituting the link device” cannot be performed. If the axis C is movable without being fixed, the link device continues to rotate and the rotation of the door does not stop even if “any of the links constituting the link device” cannot rotate.

In FIG. 5 (a), D10, C10, P10, J10, and Q10 indicate the state immediately before closing as indicated by the solid line in FIG. 1 (a). The circle Rq10 is a circle centered on the axis Q10. When the rotating body rotation axis Q can move with the connecting shaft P stopped at the position P10, the rotation body rotation axis Q moves on the circle Rp10 centered on the axis P10. Moving. When the rotating body rotation axis Q moves to the position of Q0, the connecting shaft moves along a circle Rp0 centered on the axis Q0, and “a circle Rc0 centered on the position C0 of the connection axis C when closed” Move to the intersection P00 with the circle Rq0.
In FIG. 5A, the rotating body rotation axis Q moves circularly around the stop position P10 of the connecting shaft P. However, where the rotation body rotation axis Q moves, if the circle Rc0 and the circle Rq0 intersect. The rotating body rotation axis Q moves to the intersection point P00, the link device does not stop, and the door closes.

FIG. 5B shows the rotating body rotation axis Q that can move circularly about the axis QQ. The rotating body J is “provided at the tip of the first rotating body JJ that rotates about the axis QQ. It is connected to “support shaft Q”. Since the "circle Rq0 centered on the position Q0 where the rotating body rotation axis Q has moved" and the "circle Rc0 centered on the position C0 of the connecting axis C when closed" can have an intersection P0, the rotating body JJ Rotates in the direction of arrow C in the figure, and the rotating body rotation axis Q moves to the intersection P0, and the link device closes the door without stopping.

In FIG. 5B, both ends of the tension spring V are attached to a fulcrum Sa provided on the rotating body J and a fulcrum Sw fixed to the door frame. The position of the fulcrum Sw hits the tension spring V with G10 and the rotation axis QQ. It is the position where it passes between.
The rotating body JJ continues to contact G10 until the door reaches D10 from the fully open position to D10, and rotates away from G10 until it reaches the closed position.

As a matter of course, the length of the tension spring V decreases in the range (a) from the time of full opening to just before closing, but as shown in FIG. 5B, the fulcrum Sa10 after movement is “the fulcrum before movement”. It is inside the circle “Rsw” passing through Sa0 and centered on the fulcrum Sw ”, and also decreases in the range (i) from just before closing to when closing. This means that the length of the spring continues to decrease from the fully open position to the closed position, and the link device does not stop.

In the embodiment of FIGS. 1 and 2, the “spring force that gives rotation to the rotating body” acts in the direction opposite to the closing direction in the range from immediately before closing to the closing time, but in the embodiment of FIG. Continue to act in the closing direction. Moreover, it does not give resistance as shown in FIGS.
FIGS. 6 to 8 illustrate the case where the closing device is a slider crank device, and the door does not stop even when the rotation of the door stops during the period from the fully open state to the closed time.
In FIG. 6, resistance is given on the way and only the door rotation is decelerated, and the closing device continues to rotate.
7 and 8 make it possible to move the position of the connecting shaft P even if the rotation of the door stops halfway, so that it does not stop.

In FIG. 6, the rotating body J rotates about the rotating body rotation axis Q, the wheel B is mounted on the support shaft Ib provided at the tip of the rotating body J, and the long hole Dh rotates about the pivot axis O of the door. It attaches to the metal fitting Dw attached to the door D which is not shown in figure. The long hole Dh moves circularly about the pivot axis O of the door. When the rotating body J rotates in the direction of arrow A in the figure, the door D rotates in the direction of arrow B in the figure, and the wheel B moves in the direction of arrow C in the figure along the long hole Dh.
The circle Rq is a circle whose center is the drive shaft Q and whose radius is the distance between the drive shaft Q and the radius “the farthest position of the wheel B from the drive shaft Q”. The circle Ro is centered on the door pivot Od and is in contact with the circle Rq at the point Pr. Point Pr is a position where two circles intersect, and is on a straight line Toq connecting the drive shaft Q and the door pivot axis O. When the rotation support shaft Ib is on the straight line Toq, the wheel B is far from the door pivot axis O. Closest to the edge De.

The adjustment bolt Ga passes through the through hole Hd provided in the end portion De of the long hole Dh far from the pivot axis O of the door, and the push spring U is inserted between the head of the adjustment bolt Ga and the end portion De. As shown in FIG. 6B, by loosening the nut Gn, the head of the adjustment bolt Ga is protruded from the end portion De to increase the distance La in the drawing. As shown in FIG. 6A, when the wheel B passes near the straight line Toq, the wheel B pushes the head of the adjusting bolt Ga in a direction approaching the end De, and increases the distance Lb in the figure. At this time, the braking force is applied to the rotational force of the drive shaft Q, and the “force for rotating the door” is reduced accordingly, and the closing speed of the door is reduced.
When the arm J further rotates and the wheel B moves away from the circle Ro, the braking force is weakened. When the door is closed, the wheel B moves away from the adjusting bolt Ga, and the braking force is not involved in the sealing force.

7 and 8, the rotating body J (not shown) rotates about the rotating body rotation axis Q, and the long hole Jh attaches to the rotating body J and rotates about the rotating body rotation axis Q. The link A rotates about the connecting shaft C provided on the door D, and the wheel B is mounted on the support shaft Ib provided at the tip of the link A. When the rotator J rotates in the direction of arrow A in the figure, the door D rotates in the direction of arrow B in the figure.
7 and 8, the wheel B moves along the long hole Dh from the end Jh90 of the passage farther away from the rotation axis Q to the end Jh0 closer to the rotation axis Q. While the angle Θa at which the axial center line of the long hole Jh intersects the axis A of the link A at the intersection point Ib is an obtuse angle, the wheel B remains at the end Jh90 far from the rotation axis Q and the intersection angle Θa When the angle becomes an acute angle, it starts to move toward the end Jh0 closer.

In FIG. 7A, if the wheel B stays at the end Jh90 far from the rotation axis Q, the rotation axis Ib of the wheel sequentially moves as indicated by Ib50, Ib30, and Ib10 to rotate the rotation body rotation axis Q. Revolve to. When the crossing angle Θa becomes an acute angle, the rotation axis Ib of the wheel sequentially moves as shown by Ibb50 and Ibb30 and starts moving toward the near end Jh0.
If the wheel B moves toward the end Jh0 closer to the wheel, the crossing angle Θa increases and the crossing angle Θa is not acute. When the long hole Jh rotates, the wheel B moves again. Such movement continues until the axes O, C and Ib are in a straight line.

When the wheel moves to the position indicated by Ibb30 in FIG. 7A, the axes O, C and Ib are in a straight line, the intersection angle Θa is not an acute angle and the wheel B cannot move, and the rotation of the door stops.
When the axes O, C, and Ib are in a straight line, FIG. 7A shows the case where the length of the link A does not reach the rotating body rotation axis Q, and FIG. This is the case when it reaches the axis Q. In the case of FIG. 7B, since the sliding surface shape of the long hole Jh is also an arc, the wheel B moves to the position of the rotating body rotating shaft Q, and the link device as long as the wheel B remains at the position of the rotating body rotating shaft Q. The rotating body J can rotate even when the door stops rotating, and the device for sealing the door can be operated by this rotation.

In FIG. 7B, the state where the wheel B staying at the position of Ib30 has moved to the position of Ibb30 is indicated by a solid line. At the position Ibb30, the angle Θa30 at which the axis line of the long hole Jh and the axis line of the link A intersect is an acute angle, so the rotating body J further rotates and the wheel B moves to the position Ibb0 of the rotating body rotation axis Q. To do. At this time, the direction in which the axis of the link A10 faces is shifted from the pivot axis O of the door, and the link A10 moves in the direction of opening the door. In the case of FIG. 7B, since the axes O, C, and Ib are aligned after passing through the positions where the axes O, C, and Q are aligned, the door is returned to the position where the axes O, C, and Q are aligned. The power to do so works.

FIG. 8 is an operation explanatory diagram when the axes O, C, and Ib are in a straight line and approach the positions where the axes O, C, and Q are in a straight line.
When the axes O, C, and Ib are in a straight line, the rotation of the device stops, and the wheel B moves in the long hole Jh, so that the door resumes rotation, but when the wheel is at the position of the rotating body rotation axis Q, The rotating body J can freely rotate independently of the door.

In the case of FIG. 7, as shown in FIG. 7B, the wheel B stays at the end far from the pivot axis O of the long hole Jh until the door D reaches the position of D10 immediately before closing, and the door D Reaches the position of D10 immediately before closing, the rotation of the rotating body J stops, and the movement of the wheel starts after the axes O, C and Ib are aligned. Since the wheel B does not always move to the position of the rotating body rotation axis Q when the door D is at the position D10 immediately before closing, the rotating body J cannot always rotate. When the wheel B is at the position of the rotating body rotation axis Q, the direction in which the axis of the link A10 faces is the direction in which the door is rotated in the opening direction.
In the case of FIG. 8, as shown in FIG. 8 (a), before the door D reaches the position of D10 immediately before closing, the axes O, C, Ib are in a straight line and the movement of the wheel starts. Before the door D reaches the position D10 immediately before closing, the rotation of the rotating body J stops and the movement of the wheel starts. When the door D reaches the position of D10 just before closing, the wheel B is at the position of the rotating body rotation axis Q, and the rotating body J can rotate reliably.

As the doors approach the state in which the axes O, C, and Ib are in a straight line from the fully opened position, the direction of the link core A toward the pivot axis O of the door is reduced, and the rotation of the door and the movement of the wheels are reduced. The axial force acting on the link A is spent exclusively on moving the wheel rather than rotating the door.
In the state where the direction of the force that the link A pulls the connecting shaft C is the radial direction of the rotation of the door and the rotation of the door stops, the force that the wheel B presses the sliding surface K inside the elongated hole becomes large. As a result, the rotational resistance of the wheel B around the rotation axis increases and the moving speed of the wheel B is reduced.

When the wheel B starts to move from the rotating body rotation axis Q toward the end Jh90 far from the end of the passage, the movement of the wheel B becomes slower as the crossing angle that becomes an acute angle is closer to 90 degrees. While the axial force is applied to the link A, the rotating body J rotates slightly to move the wheel greatly. The rotational force of the rotating body J is not transmitted to the door but becomes rolling friction of the wheel. The larger the axial force acting on the link A, the larger the friction, the slower the moving speed of the wheel, and the longer the time when the door stops rotating.

When the wheel B moves and approaches the end Jh0 closer to the rotating body rotation axis Q, the closer to the rotating body rotation axis Q, the sharper the intersection angle Θa becomes and the wheel B moves at a rapid speed. The rotation transmission function disappears because the rotation of J is not transmitted to the door. As shown in FIG. 8B, when the wheel B is close to the rotating body rotation axis Q, the crossing angle Θa approaches zero, and the rotating body J rotates instantaneously with almost no load.
When the wheel moves along the sliding surface inside the elongated hole, the rotation of the rotating body J is not transmitted to the door, but the crossing angle Θa is set before the axes O, C, and Ib are aligned as in the case of FIG. If the wheel starts to move at an acute angle, the door will not be subjected to rotational force immediately before closing, and the rotational speed of the door will not accelerate.

In the case of FIG. 7A, when the axes O, C, and Ib are in a straight line, the intersection angle Θa does not become an acute angle, so the wheel does not move and the door does not rotate.
On the other hand, in the case of FIG. 8, the wheels move after the axes O, C, and Ib are in a straight line.
Rotational force does not act on the door at an earlier stage than immediately before closing, and the rotational speed of the door does not accelerate. As shown in FIG. 8B, the rotating body J can rotate greatly even if the rotation of the door stops.

The embodiment of FIGS. 9 to 11 uses the two links A and the second link AA to connect the connecting shaft P at the tip of the rotating body J and the connecting shaft C of the door in the link device of FIGS. Therefore, the second link AA has one end connected to the connecting shaft C and the other end connected to the “second connecting shaft PP opposite to the connecting shaft P of the link A”.

9, the rotating body J is attached to the door D via the rotating body rotating shaft Q provided on the door D, and the rotation of the rotating body J in the direction of arrow A in the drawing is changed to the rotation of the door D in the direction of arrow B in the drawing. D100 and D0 represent doors D when fully opened and closed, respectively.
10 and 11, the rotating body J is attached to the door frame W via the rotating body rotating shaft Q provided on the door frame W, and the rotation of the rotating body J in the direction of arrow A in the figure is the direction of arrow D in the figure of the door D. Rotate. D7 and D0 represent the door D when fully opened and closed, respectively.

In FIG. 9, the link A and the second link AA keep a straight line and Gj does not contact the link A from the fully open position D100 to the position D30 of the door just before closing. When the door is in the position of D30 just before closing, the contact Gj comes into contact with the link A, and the link A and the second link AA are fixed and start to bend.
In FIG. 10, the link A and the second link AA are kept in a straight line from D7 when fully opened to D4 just before closing, and the contact Gj does not contact. Gj continues to contact the link A from D4 just before closing to D0 at closing, and the rotating body J and the link A integrally rotate around the rotating body rotation axis Q.

When the link A and the second link AA are in a straight line, the connecting shaft P revolves around the rotating body rotating shaft Q and pulls the connecting shaft C. However, after the hit Gj hits the link A, The two connecting shafts PP revolve around the rotating body rotating shaft Q and pull the connecting shaft C. Since the rotation radius r0 of the second connection shaft PP is smaller than the rotation radius r30 of the connection shaft P, the force for sealing the door is increased.
The rotating device described in FIGS. 9 to 12 has a capability of not only bringing the door to a stop state just before closing but also sealing tightly.

As shown in FIG. 9B, in the “range from immediately before closing to the closing time”, the direction of the second link AA changes from a direction substantially parallel to the closed door surface to a perpendicular direction.
When the directions are almost parallel, the direction of the force pulling the connecting shaft C is toward the door pivot O, which is the radial direction of the door's circular motion. Is done.

FIG. 11 shows a device that adds the guide roller B to the “link device that transmits the rotation of the drive unit to the door by the connecting portion composed of two links” described in FIGS. With the structure in which the connecting portion is not temporarily deformed, this device can temporarily close the door with inertial force immediately before closing.

The rotating body J is rotatably supported by a rotating body rotating shaft Q provided on a plate W fixed to the door frame, and rotates around the rotating body rotating shaft Q in the direction of the arrow A in FIG. Rotate in the closing direction indicated by the arrow B in the figure around the pivot axis O. A connecting shaft P provided at the tip of the rotating body and a connecting shaft C attached to the top of the door are connected by two links A and AA, and the first link A and the second link AA are connected by a connecting shaft PP. .
The guide roller B is mounted on the plate W fixed to the door frame by the rotation support shaft Ib, and the first link A moves along the outer peripheral edge of the guide roller B and is closed even if it is separated when the door is fully opened. Sometimes in contact.

In FIG. 11, the links Ji, Ai, AAi, Di, (i = 0, 1, 2,... 7) and the connecting shafts Pi, PPi, Ci (i = 0, 1, 2,... 7) are closed ( It shows the position (i = 0, 1, 2,... 7) every moment from i = 0) to fully open (i = 7). The numerical value in parentheses attached to Ci represents a change in the distance between the connection axis Pi and the connection axis Ci, and the distance between the connection axis Pi and the connection axis Ci is the time in FIG. When i = 4, the value is minimum at time i = 2 in FIG. 11B. Therefore, at this time, the crossing angle Θ between the links A and AA on the connection axis PP is minimized. FIG. 11A shows a case where the length of the link AA is shorter than that of FIG. 11B. The shorter the length of the link AA, the larger the change in the numerical value in the parentheses, and thus the larger the intersection angle. Is shown.
Thus, since the angle between the links A and AA is closed and reopened immediately before the door is closed, the contact Ga and Gb shown in FIGS. 12A and 12B are attached to the connecting portion PP of the two links. Just before closing, Ga and Gb come into contact with each other to restrain the angular deformation of the links A and AA at the connecting portion PP, so that the link device cannot be deformed.
It is possible to prevent the both from participating in the sealing force by decelerating the closing speed when Ga and Gb come into contact with each other and separating again when closing.

The crossing angle Θ between the first link A and the second link AA changes from time to time, and as explained in FIG. 11, the crossing angle Θ decreases as the door closes from the time of full opening, and reaches a minimum value immediately before closing. Then, when the door is further closed, it starts to increase. 3 and 4 where the connection is made of one link, the phenomenon in which the crossing angle between the door D and the link A starts from decreasing to increasing immediately before closing is also observed in the link device of FIG. 11 consisting of two links.

FIG. 12A shows a state where the contact Ga and Gb are in contact with each other, and the leaf spring Gb is bent by the adjusting bolt Ga. FIG.12 (b) shows the state which both separated. 12 (a) and 12 (b), the adjustment bolt Ga passes through a through hole Ha provided in the plate Pa fixed to the link AA, and the screw is cut inside the through hole Ha. The plate Pa includes a fixed portion Pb1 fixed to the link A and a slide shaft Pb2 having a continuous rectangular cross section.

The set collar Pb3 has a rectangular through hole Hb, and a slide shaft Pb2 and a leaf spring Gb are accommodated in the through hole Hb. The set collar Pb3 is movable in the length direction of the leaf spring, and the position is determined by a set screw Pb4, and the distance Lb from the contact point between the leaf spring Gb and the adjusting bolt Ga to the set collar can be adjusted. The leaf spring end is a free end, and as the distance Lb becomes longer, the spring becomes less rigid and deforms as a cantilever. By adjusting the distance La, the magnitude of the resistance applied to the rotational force transmitted from the drive unit J to the door can be adjusted.
When the distance La is lengthened, the contact area between the two becomes large, the deceleration effect is large, and the door rotation stops. Further, when the distance Lb is shortened, a strong drag is exerted and the rotational force is greatly resisted.

In the sealing device of FIG. 13, the wheel B is attached to the door D, and the sliding surface K is fixed to the door frame W. The wheel B is mounted on a rotating shaft Ib of a wheel provided at one end of a rotating body J that rotates about the rotating body rotation axis Q, and a tension spring V is attached to a fulcrum Sj provided at the other end. , Another fulcrum C of the tension spring V is attached to the door D near the pivot axis O of the door. The rotating body J rotates in the direction of arrow A in the figure, and the door D rotates in the direction of arrow B in the figure.

In the “range from fully open to just before closing (A)” until the sliding surface K1 comes into contact with the wheel B, the tension spring V is fully open on the “straight line Tv connecting the rotating body rotation axis Q and the fulcrum C”. Therefore, rotation of the rotating body J in the direction opposite to the direction of arrow A in the drawing is prevented by the hit Gj. One fulcrum Sj of the tension spring V is stationary, the other fulcrum C revolves around the door pivot O, and the length of the tension spring V decreases, so the door rotates. The pulling spring V is a toggle spring that not only seals the door but also rotates the door from full open to closed.
FIG. 13A is a diagram of the sealing device, and FIG. 13B is a plan view thereof, and the sliding surface K attached to the door is not shown. FIG. 13C is an elevation view thereof.

FIG. 14 is an explanatory diagram of the operation of the sealing device in FIG. As shown in FIG. 14 (c), when the tension spring V is on the closing side of the “straight line Tv connecting the rotating body rotation axis Q and the fulcrum C” and the rotating body J rotates away from the contact Gj, The wheel B presses the door D through the sliding surface K2.
“The direction Fb of the force with which the wheel B presses the door D” is substantially tangential to the circular motion of the door, and the sliding surface K2 is inclined with respect to the door D surface to the extent that resistance is not applied when the closed door D is opened. It is inclined at a gradient of angle Θd.

FIG. 15 is similar to the embodiment of FIGS. 13 and 14 and moves on the sliding surface K on which the wheel B is rotated and fixed. However, the wheel B and the rotating body J are attached to the door D, and the pivot O of the door Revolve around. The sliding surface K is fixed to the door frame W, and the fulcrum Sw on the fixed side of the pulling spring V that is a toggle spring is attached to the door frame W. The rotating body J rotates in the direction of arrow A in the figure, and the door D rotates in the direction of arrow B in the figure.

In the “range from fully open to just before closing (A)” until the sliding surface K1 comes into contact with the wheel B, the tension spring V is “the closing side of the straight line Tv connecting the rotating body rotation axis Q and the fulcrum Sw”. Therefore, rotation of the rotating body J in the direction opposite to the direction of arrow A in the drawing is prevented by the hit Gj. One fulcrum Sw of the tension spring V is stationary, the other fulcrum Sj revolves around the door pivot O, and the length of the tension spring V decreases, so the door rotates.

As shown in FIG. 15C, the tension spring V is on the fully open side of the “straight line Tv connecting the rotating body rotation axis Q and the fulcrum Sw” in the range (i) immediately before closing to the closing time. The wheel B pulls the door frame W through the sliding surface K2 when the door is sealed.
"The direction Fb of the force that the wheel B pulls the door frame W" is substantially tangential to the circular motion of the door, and the sliding surface K2 is inclined with respect to the door D surface to the extent that resistance is not applied when the closed door D is opened. It is inclined at a gradient of angle Θd.

The embodiment of FIG. 16 has the same structure as the embodiment of FIG. 15, but the rotating body J abuts against the sliding surface K1 and rotates away from Gj and moves along the sliding surface K2. When the door is sealed, the wheel B pushes the door frame W through the sliding surface K2.
The “direction Fb of the force that the wheel B pushes and separates the door frame W” is almost the system direction of the circular motion of the door while moving along the sliding surface K2, and gradually closes from the system direction to the circumferential direction when sealed. Sometimes it is almost tangential to the circular motion of the door.

14 and 16, unlike the embodiment of FIG. 15, the “contact point b between the sliding surface K2 and the wheel B” and the “rotary axis Ib of the wheel” are sealed when moving along the sliding surface K2. And the rotating body rotation axis Q approach a straight line, and a large axial force is generated in the direction of the “straight line connecting the wheel rotation axis Ib and the rotating body rotation axis Q”. Even if the force is small, a large sealing force acts on the door.
In the sealing device of the present invention, the wheel B moves along the sliding surface K substantially parallel to the “closed door surface”, and a large sealing force is applied to the “closed door surface” in a substantially perpendicular direction.

The embodiment of FIG. 16 differs from the embodiment of FIGS. 14 and 15 in that the moving distance of the wheel B on the sliding surface K is long, and the rotation speed of the door is reduced when the wheel B moves while keeping contact with the sliding surface K2. There is an effect to. The embodiment shown in FIGS. 17 and 18 moves along the wheel B on which the sliding surface K rotates and is fixed. The moving distance of the wheel B on the sliding surface K is long, and the rotation of the door It has the effect of reducing the speed. Since the moving distance on the sliding surface K of the wheel B is long, the rotation of the rotating body J accompanying the movement of the wheel B needs to be large. In the embodiment shown in FIGS. 14 and 15 where there is almost no moving distance on the sliding surface K of the wheel B, the rotation of the rotating body J accompanying the movement of the wheel B may be small.

The embodiment of FIGS. 13 to 16 moves on the sliding surface K on which the wheel B is rotated and fixed. In the embodiment of FIGS. 13 and 14, the revolving wheel B is connected to the door frame W via the rotating body J. The sliding surface K revolves around the door pivot axis O. 15 and 16, the revolving wheel B is attached to the door D via the rotating body J, and the sliding surface K is fixed to the door frame W.
In the embodiment of FIGS. 17 and 18, the sliding surface K moves along the wheel B while rotating in the direction indicated by the arrow A in the figure, and the door D rotates in the direction indicated by the arrow B in the figure.

In the embodiment of FIG. 17, the rotating body rotating shaft Q is fixed to the door frame W, the rotating body J having the sliding surface K is rotatably supported around the rotating body rotating shaft Q, and the wheel B is attached to the door. Revolve around the pivot axis O of the door.
In the embodiment of FIG. 18, the wheel B is attached to the door frame W via the wheel rotation axis Ib, the rotation body rotation axis Q is attached to the door D, and the rotation body J provided with the sliding surface K is the rotation body rotation axis Q. Is rotatably supported around. The rotating body J revolves around the pivot axis O of the door.

The structure and operation of the spring of the embodiment of FIGS. 17 and 18 are the same as those of the embodiment of FIGS.
In the embodiment shown in FIG. 17, the fulcrum Sj of the spring on the rotating body J side does not move in the “range from fully open to just before closing (A)”, so that the fulcrum C on the opposite end is attached to the door and revolves. ing. In the embodiment of FIG. 18, the fulcrum Sj of the spring on the rotating body J side revolves, so that the fulcrum Sw on the opposite end side is fixed to the door frame W.
When the sliding surface K is in contact with the contact Gj, the rotation of the rotating body J in the direction opposite to the direction indicated by the arrow a in the drawing is prevented and the door is rotated. When the sliding surface K hits and moves away from Gj, the rotating body J rotates and seals the door.
In the case of FIG. 17, the sliding surface Kb presses the wheel B to seal the door, and in the case of FIG. 18, the wheel B is pushed away to seal the door. In either case, the "contact point b between the sliding surface K and the wheel B", the rotating shaft Ib of the wheel, and the rotating member rotating shaft Q approach the state of being arranged in a straight line, thereby increasing the sealing force. .
The shape of the sliding surface K in the embodiment of FIGS. 17 and 18 is preferably an involute curve.

FIG. 19 explains the shape of the sliding surface K of the embodiment of FIG. 17 and explains the case where the shape of the sliding surface K is an involute curve.
When the rotator J rotates about the rotator rotation axis Q in the direction of the arrow a in the figure, the wheel B moves in a direction away from the rotator rotation axis Q, but the rotational force around the rotator rotation axis Q is constant. When the sliding surface K acts on the wheel B, the force is uniform from the beginning to the end, and the wheel B can be moved with the weakest force. Further, the uniform speed acts from the beginning to the end, so that the moving speed can be reduced.
17 and 18, when the shape of the sliding surface K is an involute curve, the wheel B can be moved even with the weakest force at the end of the expansion and contraction of the spring, and since the movement is less accelerated, it is sealed while decelerating. can do.

In FIG. 19A, when the rotator J rotates about the rotator rotation axis Q in the direction of arrow A in the figure, the rotator J0 indicated by the solid line rotates and moves to J44 indicated by the dotted line, and the wheel B rotates the rotator rotation axis Q It moves away from the position of B44. When this movement is considered with the rotating body J fixed, the wheel B moves along the sliding surface K and sequentially moves to B1, B2,.
Since the rotational force around the rotating body rotation axis Q is constant, the action lines of the forces Fb1, Fb2,... That the sliding surface K acts on the wheel B have the same distance from the rotating body rotation axis Q. It touches the virtual circle Rq.

A straight line passing through the contact point bi (i = 0.1.2...) Of the sliding surface K and in contact with the virtual circle Rq is defined as Ti (i = 0.1.2...). Assuming that Rq and the contact point are contact points ai (i = 0.1.2....), The arc bi-1bi around the contact point bi (i = 0.1.2 ....) of the sliding surface K is It approximates to a circumference centered on the contact point ai (i = 0.1.2....) And having a radius abi. The sliding surface K approximates that the circular arc bi-1bi is continuous.

An arc bici shown in FIG. 19 (b) rotates in the radial direction by rotating each contact bi (i = 0.1.2...) Of FIG. It is arranged on the straight line Tq.
In FIG. 19B, a straight line passing through the contact point bi (i = 0.1.2...) Of the sliding surface K and contacting the virtual circle Rq is defined as Tii (ii = 0.1.2...). When the straight line Tii, the virtual circle Rq, and the contact point are a contact point aii (ii = 0.1.2...), The contact point bi (i = 0.1.2.) Of the sliding surface K shown in FIG. ..) Is a circular arc bici whose center is the contact point aii and whose radius is aibibi in FIG. 19B.

On the contrary, when the arc bici in FIG. 19B is rotated and moved continuously around the rotating body rotation axis Q, a curve of the sliding surface K can be drawn.
In FIG. 19B, the arc bici is an arc having a radius aibi with the point of contact aii as the center. If the point is ki and the distance from the point ki to “the contact point ji of the straight line passing through the point and in contact with the virtual circle Rq” is aibib, the point ki is a point on the curve of the sliding surface K. . A curve of the sliding surface K can be drawn by connecting the points ki on each circle Rqi.

The vortex shape of the sliding surface K is an involute vortex.
The radius of the arc of the differential element of the sliding surface K increases as the contact point b between the cam wheel and the cam body sliding surface moves away from the center of the virtual circle, and approaches the circle as it moves away from the rotating body rotation axis Q. In addition, the gradient of the sliding surface with respect to the moving direction on the sliding surface of the wheel decreases as the distance from the rotation axis increases.
For this reason, the cam body rotates more greatly with respect to the movement of the wheel as the wheel moves away from the rotating body rotation axis Q, but the moving speed of the wheel is not related.

In FIG. 20, the wheel B moves in the direction indicated by the arrow B in FIG. 20 and contacts the sliding surface K1 of the rotating body J, and the rotating body J rotates about the rotating body rotation axis Q in the direction indicated by the arrow A in FIG. The sealing device in which the sliding surface K2 of the body J presses the wheel B will be described. While the wheel B moves along the sliding surface K2, while contacting at the contact point bi (i = 1, 2, 3), The shape of the sliding surface K2 is drawn when the direction of the force Fi that the sliding surface K2 presses the wheel B is always constant.
In FIG. 20, when the wheel Bi (i = 1, 2, 3), which moves without rotating the rotating body, revolves around the rotating body rotation axis Q, the wheel rotation axis Ibi moves to Ibii.

When the contact point b1 that contacts the wheel B1 for the first time is set, the tangent line of the sliding surface K at the contact point b1 is T1, and the point b22 on the extension line of the tangent line T1 is the contact point that the wheel B2 contacts next, the contact point b22 actually contacts. The point b2 is a point b2 where the contact point b22 rotates about the rotating body rotation axis Q and intersects with a “track Tbb parallel to the moving track Tb of the wheel rotation axis Ib”. The intersection Ib2 between the “straight line passing through the point b2 and the straight line in the F2 direction” and the “movement track Tb of the wheel rotation axis Ib” is the position of the wheel B2 rotation axis that actually contacts the sliding surface K2.
An intersection Ib22 between “a circle passing through Ib2 and centering on the rotating body rotation axis Q” and “a circle centering on the point b22 and having a radius of the wheel” is a contact point between the sliding surface K2 and the wheel B2. The tangent line T22 of the sliding surface K2 at the contact point b22 is perpendicular to the “straight line connecting the point Ib22 and the point b22”. In this way, the shape of the sliding surface K2 can be drawn by successively continuing Tii.

In FIG. 21, the rotating body J is rotatably supported around the rotating body rotation axis Q, and the rotating body JJ is rotated around the supporting shaft QQ provided at the tip of the rotating body J. It is pivotally supported so that it can rotate freely.
While contacting the sliding surface KK of the rotating body JJ and contacting the sliding surface KK of the rotating body JJ, the rotating body JJ rotates in the direction indicated by the arrow C in the figure, and the “sliding surface of the rotating body JJ shown in FIG. From the beginning of contact with the moving surface KK to "when the moving direction of the wheel B is perpendicular to the moving direction of the rotating body J" shown in FIG. Thereafter, it rotates in the direction opposite to the direction of arrow A in the figure.
The rotation of the rotating body J around the rotating body rotation axis Q in the direction opposite to the direction indicated by the arrow A is blocked by Gj, and the rotation of the rotating body JJ around the support shaft QQ in the direction opposite to the direction indicated by the arrow C in FIG. It is blocked by Gjj.

The sliding of the rotating body JJ from “the initial contact with the sliding surface KK of the rotating body JJ” shown in FIG. 21A to “just before the sliding surface KK of the rotating body JJ” shown in FIG. The contact point b between the surface KK and the wheel B rotates around the rotation axis Ib of the wheel in the direction of the arrow D in the figure, but the wheel B does not move along the sliding surface KK, but the sliding surface KK and the wheel. There is no movement of the contact with B.
Further, the contact point b between the sliding surface KK and the wheel B, the support shaft QQ, and the wheel rotation axis Ib are kept in a straight line, and the distance between the support shaft QQ and the wheel rotation axis Ib is constant and the minimum value is maintained.

In FIG. 21 (a), “the initial contact with the sliding surface KK of the rotating body JJ” and the previous “when separated from the sliding surface KK of the rotating body JJ”, the tension spring V is supported by the support shaft QQ. The rotation of the rotating body JJ in the direction opposite to the direction indicated by the arrow C in FIG. Further, the rotation of the rotating body J on the Gj side and in the direction opposite to the direction of the arrow A in the drawing is prevented by the winning Gj.
In this way, the apparatus is in a stationary state as shown in FIG. 21 (a) “initially in contact with the sliding surface KK of the rotating body JJ” and before “when separated from the sliding surface KK of the rotating body JJ”. Keep.

The length of the pulling spring V from “the initial contact with the sliding surface KK of the rotating body JJ” shown in FIG. 21A to “just before the sliding surface KK of the rotating body JJ” shown in FIG. Will continue to decrease, so wheel B is moved in the direction of arrow B in the figure.
“Rotation in the direction of arrow D in the drawing around the rotation axis Ib of the wheel of the contact b” is also rotation in the direction of the force Fb in which the wheel B presses the sliding surface KK, and the “rotating body shown in FIG. From the beginning of contact with the sliding surface KK of JJ to “just before moving away from the sliding surface KK of the rotating body JJ” shown in FIG. 21D, the wheel B changes the “direction of force pressing the sliding surface KK”. While changing, the “direction of the force pressing the sliding surface KK” continues to act without interruption, and the wheel B is moved over a long moving distance.

When the sealing device of the embodiment of FIGS. 13 to 18 is replaced with the device of FIG. 21, for example, when the wheel B is attached to the door and the rotating body rotation shaft Q is attached to the door frame, or the wheel B is attached to the door frame and the rotating body rotates. When axis Q is attached to the door,
In the “range from just before closing to the time of closing (i)”, the force to rotate the door is changed from the direction toward the pivot axis O of the door or the direction of rotating the door to the direction of gradually closing the door. As a result, the door is sealed while decelerating.
Further, since the device itself is rotationally deformed, the inertia energy having the direction of the arrow A in the figure of the door is consumed.

FIG. 22 shows the wheel B from “initially in contact with the sliding surface KK of the rotating body JJ” shown in FIG. 21A to “just before leaving the sliding surface KK of the rotating body JJ” shown in FIG. , The wheel rotation axis Ib, the rotating body rotation axis QQ, the contact b between the sliding surface KK and the wheel B, the force Fb pressing the sliding surface KK, and the change in the position and direction of the spring fulcrum Sj.

The embodiment of FIGS. 13 to 22 seals the door by moving the wheel B along the sliding surface K in the “range from immediately before closing to the time of closing (i)”. When the wheel B moves along the sliding surface K, the direction of the force Fb that the wheel B presses the sliding surface K changes from the radial direction of the circular motion of the door to the circumferential direction.
The embodiment of FIGS. 13 to 15 is in the circumferential direction from the time when the wheel B is transferred to the sliding surface K, and the distance at which the wheel B moves along the sliding surface K is sealed when the wheel B is transferred. On the other hand, in the embodiments of FIGS. 16 to 22, the direction of the pressing force Fb is gradually changed from the radial direction of the circular motion of the door to the circumferential direction, and the “movement distance along the sliding surface K of the wheel B” is long.
The embodiment in which the sliding surface K of FIGS. 17 to 19 is a vortex line is “along the sliding surface K of the wheel B with respect to the“ movement distance in the direction in which the wheel B approaches the door frame as the door rotates ”. The “movement distance” is increased as much as possible.

The embodiment of FIG. 20 reduces the “change in the direction of the pressing force Fb” from when the wheel B contacts the sliding surface K until the door is sealed. The sealing force does not gradually increase as it approaches when sealing.
As the direction of the pressing force Fb moves toward the pivot axis O of the door, the rotational force of the door decreases and the rotational speed of the door decreases. The present invention reduces the rotational speed of the door by making the “direction of the force Fb that the wheel B presses the sliding surface K” toward the pivot axis O of the door without using frictional resistance. Is.

13 to 22, the direction of the pressing force Fb works in the direction of closing the door, but by changing the gradient of the sliding surface K, “the direction of the force Fb that the wheel B presses the sliding surface K” "Toward the pivot axis O of the door, so that" the force for rotating the door "can be made zero, and the gradient can be changed to work in the direction of opening the door.
As long as the length of the spring continues to decrease in this process, the door stops without stopping even if the door stops in the middle or rotates in the opening direction unless the spring starts to increase. The embodiment of FIGS. 13 to 22 not only rotates at a unit low speed but also tightly seals the door by simply attaching a sealing device having wheels and a sliding surface to the door simply connecting the door and the door frame with a spring. Moreover, it provides a door that decelerates just before closing.

In the embodiment of FIGS. 21 and 22, the direction of the pressing force Fb changes greatly, and the direction of the pressing force Fb changes greatly from the direction of opening the door to the sealing direction. Consume kinetic energy.
In the embodiments of FIGS. 13 to 20, the “spring for rotating the door” also serves as the “spring for sealing the door”. Since the “door sealing operation” involves rotation, the door rotates as long as the “direction of the force Fb that the wheel B presses the sliding surface K” does not face the pivot axis O of the door, whether it opens or closes. Then, since the “force for rotating the door” becomes zero when going to the pivot axis O of the door, the rotation of the door is stopped.

20 and 21, the “spring for rotating the door” and the “spring for sealing the door” are prepared separately, and the “device for rotating the door” and the “device for sealing the door” are separate drive systems. It is working.
Regardless of whether the “direction of the force Fb that the wheel B presses the sliding surface K” is directed toward the pivot axis O of the door, the door rotates, and the position where the closed door is slightly opened is “the wheel B is sliding surface. When the “direction of the force Fb pressing K” is a position toward the pivot axis O of the door, and the hand is released from the door at that position, the embodiment of FIGS. 13 to 20 remains stationary, but FIG. , 22, the door can be surely sealed by making the sealing device operate with another drive system.

13 to 18, the spring fulcrum opposite to the fulcrum Sj of the rotating body J is attached to the door or the door frame. In any case, the starting point of the spring is provided at a position near the pivot axis O of the door. In order to rotate the door, a large force is required, and even if the spring force is large, the door rotates weakly and the door rotates at a low speed.
This means that even if the spring force is "a large force necessary for sealing when closed", a large force does not act when the door is opened and closed. It will not be necessary. The spring rotates the door while preserving the great sealing power that is hidden, and finally suddenly appears.
13-18, if the sliding surface K and the rotating body J are positioned far from the pivot axis O of the door, the door will act strongly even if the spring force is weak, Even if the length is maximum when fully opened, the force is small when opening the door, and the door is securely sealed even when the length is minimum when closed.

When the door is rotated with a weak spring force, the door rotates slowly, but stops before the door closes when the latch hits the door frame.
By simply attaching a spring to the sealing device of the embodiment of FIGS. 13 to 18 as in the present invention, the door is strongly sealed at the end despite the door rotating slowly.

In the present invention, since the force of the spring acts weakly and rotates at a low speed, the rotation speed of the door is accelerated only when a strong sealing force acts on the door.
In the embodiments of FIGS. 13 to 15, the “range from immediately before closing to the closing time (i)” is narrow, and the door closes soon without acceleration. The embodiment of FIGS. 16-18 is a device that seals while decelerating.

In the embodiment shown in FIGS. 13 to 18, when the rotating device described in FIGS. 1 to 12 is attached instead of the spring, the sealing device can be operated after the door is temporarily stopped or temporarily stopped.
13 to 18, when the spring is removed and the positions of the sliding surfaces K1 and K2 are switched from front to back when viewed from the pivot axis O of the door, the door is closed even if the rotation direction of the rotating body J is reversed. I can do it.

The rotating device described in FIGS. 1 to 12 stops the door just before closing.
For example, as shown in FIGS. 1 and 2, in the case where the rotating body J from which the door is closed immediately before closing is rotated in reverse, the rotation of the rotating body J of the rotating device cannot be used for the sealing device. In such a case, the sealing device described in FIGS. 13 to 22 must be newly attached, and the separately attached spring must work only at the time of sealing.
For example, those that can rotate even when the door is stopped as shown in FIGS. 5 and 8 and those that rotate greatly even though the door slightly rotates can share the rotating body rotation axis Q of the sealing device and the rotating device. .

23 to 28 show an embodiment in which a sealing device is attached to the rotating device described in FIG. 1. FIG. 23 shows a case where the rotating body J rotates about the rotating body rotation axis Q attached to the door frame. This is a case where the rotating body J rotates about the rotating body rotation axis Q attached to the door DW. Each of FIGS. (A) shows a state immediately before closing, and the direction of the axial center line of the link A temporarily stops the door toward the pivot axis O of the door. (B) The figure shows a closed door.
23, as in the embodiment of FIGS. 1A and 1B, the door pivot axis O, the connecting shaft C, and the connecting shaft P are in a straight line, and the rotation device is in a rotation stopped state. Although the structure is such that the bearing Cd of the connecting shaft C is rotatably supported by the door D via the rotating shaft Ic, the rotation of the rotating body J in the direction indicated by the arrow A in the process of closing the door immediately before closing. Can be continued.
FIG. 24 shows a structure in which, as in the embodiment of FIG. 1 (c), the door does not close and the rotating device does not stop rotating.

As shown in FIG. 23 (b), the bearing Cd of the connecting shaft C can be rotated in the direction of the arrow E in the figure around the rotating shaft Ic, and the connecting shaft C can be moved from the pivot axis O of the door as shown in FIG. 23 (a). When a force in the direction of moving away acts, the bearing Cd is prevented from rotating in the opposite direction in the direction of arrow E in the figure, and the rotation of the rotating body J is transmitted to the door. As shown in FIG. 23 (b), in the process of closing the door from just before closing, when a force in a direction to bring the connecting shaft C close to the pivot O of the door acts, the bearing Cd rotates in the direction of arrow E in the figure to rotate. The rotation of J is not transmitted to the door, and the rotation of the rotating body J in the direction of arrow A in the drawing can be continued.
As shown in FIG. 23 (b), when a long hole Ch is provided in the bearing Cd so that the connecting shaft C can be moved along the long hole Ch, the connecting shaft C can be moved, and the door rotates before the closing dimension. The rotation of the body J is transmitted to the door, and the rotation of the rotating body J is not transmitted to the door immediately before the door is closed.

In FIGS. 23 and 24, the rotating body J rotates in the direction of arrow A in the figure and the door D rotates in the direction of arrow B in the figure, but the spring mechanism for rotating the rotating body J in FIG. 23 is not shown. In FIG. 24, the wheel B mounted on the tip of the rotating body J is pressed by the sliding surface K of the rotating body JJ that rotates in the direction indicated by the arrow C in the drawing around the rotating body rotation axis QQ. Move in the direction of arrow a in the figure.
In FIG. 23, the arm AA is rotatably supported in the direction indicated by the arrow D in the figure on a support shaft Iaa provided at the tip of the sliding surface KK and in FIG. 24 at the tip of the rotating body J. Prevents rotation in the direction opposite to the middle arrow direction. A wheel BB is attached to the tip of the arm AA, and a slight revolution of the support shaft Iaa is changed to a large movement of the wheel BB along the sliding surface Kd attached to the door D. In the case of FIG. 23, the sliding surface Kd is allowed to enter the course of the wheel B by allowing the wheel BB to move greatly along the sliding surface Kd. In the case of FIG. 24, the wheel B is allowed to enter inside the sliding surface Kd. As shown in FIG. 13, the wheel B and the sliding surface Kd move on a horizontal plane above the upper end of the door.

23 and 24, the wheel B presses the sliding surface Kd attached to the door in the direction approaching the door frame, and presses the sliding surface Kw attached to the door frame W in the direction away from the frame. B is inserted between the sliding surface Kd attached to the door and the sliding surface Kw attached to the door frame W.
FIG. 23 (b) shows the arm AA fixed to the rotating body J by hitting Ga and the wheel B presses the sliding surface Kd. FIG. 23 (c) shows the wheel B sliding surface Kd sliding surface. It is inserted between Kw. As shown in FIG. 23C, the small axial force Faa generates a large sealing force Fd, Fw by a so-called wedge effect, and the force for sealing the door is much larger than that in the case of FIG.

The sealing device of FIGS. 23 and 24, like the sealing devices of FIGS. 13 to 15, moves in parallel with the closed door and does not move in the vertical direction at the time of sealing, so there is little rotation of the door at the time of sealing. The sealing device of ˜15 seals the door at the same time as the wheel B contacts the sliding surface K2, but the sealing device of FIGS. 23 and 24 moves along the sliding surfaces Kd and Kw for a long time. Therefore, the door stops for a long time when sealed.
On the other hand, the sealing device described in FIGS. 16 to 22 has a large movement in the vertical direction with respect to the door in which the wheel is closed at the time of sealing, and the rotation of the door at the time of sealing is large. 16 to 22 is such that the door is thrown against the door, whereas the sealing devices of FIGS. 23 and 24 are such that the door is pressed against the door, and the impact sound during sealing is as shown in FIG. Much smaller than ~ 22 sealing devices.

In the embodiment of FIGS. 25 to 28, the sealing device is attached to the rotating device of the embodiment of FIGS. 1 and 2, and the rotating device has a common rotating shaft. Even if the door stops immediately before closing, the rotating device The rotation of the sealing device continues to rotate.
25 to 28, a rotating body J is rotatably supported around a rotating body rotation axis Q provided at the upper part of the door D. The rotating body J is rotated in the direction of arrow A in FIG. While rotating, it revolves around the pivot axis O of the door in the direction of arrow B in the figure.
25 and 27 (a) are views showing a state immediately before the door is closed. 25 and 27 (b) are elevation views of the door. FIGS. 26 and 28 are plan views for explaining the operation of the door of FIG. 19, FIGS. 26 and 28 (a) show the state of the door when fully opened, (b) just before closing, and (c) showing the door when closed.

25 and 26, the link A is connected to the connecting shaft P at one end and the arm Ab is connected to the connecting shaft Ia at the other end with the rotating body rotation axis Q in the middle. A wheel Bb is mounted on the rotation support shaft Ibb at the tip of the arm Ab. The sliding surface Wb on which the wheel Bb moves is fixed to the door frame.
In the embodiment of FIGS. 27 and 28, a long hole Jh is provided on one side with the rotating body rotation axis Q in the middle, and the wheel Bf moves in the long hole Jh. The wheel Bf is mounted on the “wheel rotation axis Ibf” at the tip of the “link A that rotates about the rotation support shaft Pw to which the door frame W is fixed”. The wheel Bb is mounted on the rotation support shaft Ibb at the other end with the rotary body rotation shaft Q in the middle. The sliding surface Kb on which the wheel Bb moves is fixed to the door frame.

In the embodiment of FIGS. 1 and 2, a rotating body J is pivotally supported on a rotating body rotating shaft Q provided on the door frame W, and a connecting shaft C provided on the door D is pulled and connected to the rotating body J. A tensile force acts on A, but in FIGS. 25 to 28, the link A connected to the rotating body J presses the rotation support shaft Pw fixed to the door frame W, and a compressive force acts on the link A.
In the embodiment of FIGS. 25 to 28, “the rotation support shaft Pw that is the point of action of the force that rotates the door” is close to the door pivot O, and “the wheel Bb that seals the door” is far away from the door pivot O. 1 and 2, in the range (A), the rotating body J rotates the door largely without rotating, and in the range (A), the rotating body J moves relatively large. Seal the door.
Further, just before the door is closed, the direction in which the axis of the link A faces is directed to the rotating body rotation axis Q, and the door is stopped. Even after the door is stopped, it is almost stopped as in the embodiment shown in FIG. The rotating body J can continue to rotate.

As shown in FIG. 26 (b), the rotation support shaft Pw is in the vicinity of the pivot axis O of the door, and the rotation J of the rotating body J is small in the range of (a) immediately before the door is fully closed to when the door is closed. Is large, that is, the expansion and contraction of the spring (not shown) is small, and the door is greatly rotated. Therefore, even if the spring force is large, the door is nearly insufficient to rotate the door.
As shown in FIG. 25, the wheel Bb is attached to the upper end of the rotation support shaft Ibb of the arm Ab, and the wheel Bd is attached to the lower end. The wheel Bb moves in the direction indicated by the arrow D in the drawing along the sliding surface Kd on which the wheel Bb is fixed to the door frame in the range of (Yes), and is far away from the pivot axis O of the door. The rotation of the rotating body J and the movement of the wheel are large and the rotation of the door is small, that is, the expansion and contraction of the spring (not shown) is large, and the door is rotated small, so the force to seal the door is small even if the spring force is small. growing.

1, 3 and 5 The door is tightly sealed by a so-called wedge effect that generates a large force in a perpendicular direction with a small force parallel to the closed door. When the door is sealed as shown in FIG. 5 (c), the rotation support shaft Ia rotates around the rotation support shaft C in the direction of arrow A in the figure, and the rotation support shafts C, Ia, Ibb are arranged in a straight line. Since the distance between the rotation support shaft C and Ibb is increased, the wheel Bb is fitted in the recess Wbh. At this time, due to the wedge effect, a large sealing force acts in a direction perpendicular to the door surface.
Further, since the moving direction of the wheels is perpendicular to the rotation direction of the door, the door can be closed slowly and quietly with little rotation of the door when sealed.

The sealing device of the present invention is a device that catches the wheel or sliding surface Kd attached to the door toward the door stop and catches it immediately before closing, and presses it toward the door stop. It works only during a slight rotation of the door in the range of “No.”, does not occupy a large space movement area over the full opening of the door, and operates in a slight space close to the door frame. Moreover, there is a feature that it can be attached at a position away from the pivot of the door, and by separating the attachment position from the pivot of the door, the door can be tightly sealed with a small spring force.
Further, the sealing device of the present invention also has a function of rotating the door in the “range from the fully open door to immediately before closing”, or is added to a device that rotates the door greatly. "Makes it possible to rotate the door at a low speed even with a large spring force by making the point of action the pivot of the door. Moreover, since the circular motion of the action point centering on the pivot of the door is small, the device can be made small because the rotation angle of the function involved in the rotation is small or the rotation angle is small even if the rotation radius is large.
In the present invention, a rotating device is connected to a sealing device, and the embodiment shown in FIGS.

The embodiment of FIGS. 29 to ** connects a rotating device that operates at a position close to the pivot of the door and a sealing device that operates at a position far from the pivot of the door. A single rotating body or moving body that exists between a position close to the door pivot and a position far from the door pivot includes a rotation device and a sealing device. And a moving surface.

FIG. 30A is a plan view for explaining the operation of the embodiment “having a moving body including a rotating device and a sealing device” shown in FIG. 29, and FIG. 30A shows a view of the door shown in FIG. FIG. 29 (a) shows the state of the door when fully opened, (b) and (c) just before closing, and (d) showing the door when closed. 30B and 30C are elevation views of the door shown in FIG.

A bearing Sz having a through hole Sh through which the shaft Sf penetrates is attached to the upper portion of the door surface, and the shaft Sf can reciprocate through the through hole Sh without rotating in the axis Z direction parallel to the door surface. Is attached to the door D via the bearing Sz. Wheels Bf and Bb are attached to both ends of the shaft Sf, and a push spring U is attached between the bearing Sz and the shaft Sf. The shaft Sf moves along the axis Z of the through-hole Sh in the direction of the arrow A in the figure, the wheel Bf presses the contact Wf fixed to the upper door frame, and the door D is centered on the door pivot O. Rotate in the direction of arrow B in the figure.

In FIG. 30, W denotes a door frame, and a spline shaft is adopted as the shaft Sf and a spline boss is adopted as the bearing Sz. FIG. 30A shows a view of the door immediately before closing.
30 (b) and 30 (c) are elevation views showing the arrangement of the door components shown in FIG. 29, in which the wheel Bb is above the lower surface XX of the door frame, and FIG. FIG. 30C shows a case where the wheel Bf is above the lower surface XX of the door frame. In either case of FIGS. 30B and 30C, the function of rotating the door is established, but the case of FIG. 30B is more preferable as a state in which force is applied to the door than in the case of FIG.
By supporting the device attached to the door frame by the vertical members Wv and the horizontal members Wu of the door frame, the reaction force received when the door is rotated is supported by the vertical members Wv and the horizontal members Wu of the door frame. It is preferable to do.

In the range (a) from the fully open position shown in FIG. 29A to just before the closing position shown in FIG. 29B, the movement direction of the wheel Bf is a direction perpendicular to the closed door surface, and the wheel Bf is prevented from moving forward by the contact Wf. Is done. In the range (A), the “force for rotating the door” acts near the pivot axis O of the door, so that even if the spring force is large, the spring force acts weakly on the door, and the wheel Bf gradually increases. The door rotates greatly by moving forward. The action line Ff of “the force that rotates the door” is on a straight line passing through “the contact point bf between the wheel Bf and the contact Wf” and the rotation axis Ibf of the wheel, and “the action line of the force that rotates the door” and the door The distance Lf from the pivot axis O is small.
Even when the spring force reaches the maximum value when the door shown in FIG. 29 (a) is fully opened, the door is in a state where the force is insufficient to rotate the door, and the door barely starts rotating without stopping.

In the range (b) from immediately before closing shown in FIGS. 29B and 29C to the closing time shown in FIG. 29D, the moving direction of the wheel Bf is X parallel to the negative direction of the Y axis perpendicular to the closed door surface. Shifting to the negative direction of the shaft, the wheel Bf can greatly advance along the hit Wf, but the rotation of the door is small. In the range (ii), the “force to rotate the door” acting near the door pivot is invalid, and instead the wheel Bb is located far away from the door pivot O “sliding fixed to the door frame” The point of action of “force that rotates the door” moves away from the pivot axis O of the door. Even if the force of the spring is small, the force of the spring acts strongly on the door because the point of action of the force is far from the pivot axis O of the door.

Immediately before the closing shown in FIG. 29 (b), when the wheel Bb starts to move along the sliding surface K, the action line Fb of “the force for rotating the door” is “the wheel Bb and the sliding surface K The distance Lb between the “line of action of the force that rotates the door” and the pivot axis O of the door is small.
However, when the wheel Bb moves along the sliding surface in the depression Kh as shown in FIG. 29D, the action line Fb of the “force for rotating the door” as shown in FIG. The distance Lb between the door and the pivot O of the door is large, and the door is strongly pressed against the door even when the spring force reaches the minimum value.

In the range (a) from the fully open time shown in FIG. 29a) to just before the closing shown in (b), “the force for rotating the door” is the minimum force necessary for the door to barely start rotating without In the state immediately before closing shown in FIG. 29 (c), the force to dent the latch inside the door is insufficient, and the wheel Bb moves into the depression Kh as shown in FIG. By increasing the distance Lb between the action line Fb of the “rotating force” and the pivot axis O of the door, the door is strongly pressed against the door.
That is, the force acting on the door immediately before closing does not contribute to the rotation of the door and is used exclusively for the work of denting the latch inside the door, so that the door closing speed is not further accelerated.

In the state immediately before closing shown in FIG. 29 (d), when an external force such as strong wind acts on the door and the door rapidly rotates and closes, the wheel Bb does not fit into the recess Kh, and the sliding surface K 3 shows a state in which the wheel Bb is directly transferred to the sliding surface KK, and when the wheel Bb moves along the sliding surface KK, the climbing slope is increased and the push spring U is contracted.
When the contracted push spring U tries to extend and return, the force of the push spring U becomes “a force to rotate the door in the opening direction”, and the door immediately before closing is temporarily stopped.

Such means does not use resistance, but changes the inertia force attached to the door to a brake. The brake does not work on a door where the inertia force is not attached. Once the inertial force is released after the vehicle is stopped, the door will not brake.
A device that applies resistance to reduce the closing speed in a normal door applies a brake to the closing door regardless of whether the inertia force is attached to the door or not. In a door that does not have enough force to dent the latch inside the door, the door is stopped immediately before closing by applying a brake to the door to be closed.

The embodiment of the door shown in FIG. 29 has a “function to rotate the door by the force acting near the pivot axis O of the door” in the range from the fully open state to just before closing, and the “force is in the range from immediately before closing to sealing. The function to push the door against the door by acting at a position far away from the pivot axis of the door ”is inherited from“ work to rotate the door ”to“ work to push the door to the door ”immediately before closing. In addition, the door is sealed while reducing the closing speed of the door, and when an external force such as strong wind acts on the door and the door rotates rapidly, `` the door just before closing is temporarily stopped. Function ".

In the embodiment shown in FIG. 29, the “function to rotate the door” disappears just before closing and the “function to seal the door” starts to function, but the “function to rotate the door” just before closing does not disappear. Even if the door continues to rotate, since the wheels Bf and Bb are integrated with the shaft Sf, the “function to rotate the door” and the “function to seal the door” operate in conjunction, and the wheel Bb slides. When moving on the moving surface K, the forward movement of the wheel Bf is obstructed, the “function of rotating the door” is weakened, and the door closing speed is reduced.
When the door closes, “wheel Bb moves on sliding surface K” gives resistance to the rotation of the door by rolling friction of the wheel, and produces a deceleration effect. However, when the door is opened, “wheel Bb slides on the sliding surface. “Moving on K” means that the push spring U is contracted, and the wheel Bb is moved in a direction perpendicular to the tangential direction of the circular motion around the pivot axis O of the door of the wheel Bb, so that the door is closed. When the door is turned, resistance is applied to the rotation of the door in the same manner as when a reduction effect is produced by giving a resistance to the rotation of the door.

31 (a), 31 (b), 31 (c) and 31 (d) are examples of the same door as shown in FIG. 31. Wheels Bf and Bb are attached to both ends of the shaft Sf, and the embodiment of FIG. Is attached to the upper portion of the door surface via the bearing Sz in a state where it can reciprocate through the through hole Sh of the bearing Sz, whereas FIGS. 31 (a), 31 (b) and 3 (c) (d) In this embodiment, wheels Bf and Bb are attached to both ends of the shaft Sf, and the device is a limited link device comprising the shaft Sf, the door D, the links Af and Ab, and the door D being fixed. 31 (a) and 31 (b) and FIGS. 31 (c) and 31 (d) have different rotation directions in the operation of the link device.

In the embodiment of FIG. 29, the direction in which the wheel Bb reciprocates through the through hole Sh is perpendicular to the tangential direction of the circular motion around the pivot axis O of the door, and resistance to rotation of the door is applied. In the embodiment 31, the links Af and Ab rotate, so that the moving direction of the wheel Bb becomes almost parallel to the tangential direction of the circular motion around the pivot axis O of the door, and the resistance to the rotation of the door is reduced.
In FIGS. 31 (a), 31 (b), 31 (c) and 31 (d), the links Af and Ab rotate in the direction indicated by the arrow A in FIG. As a result, the door D rotates about the pivot O in the direction of arrow B.

31 (a) and 31 (c) indicate a state where the door is opened 60 degrees from the closed state, and FIGS. 31 (b) and 31 (d) indicate a state where the door is closed. The state of the link device indicated by the dotted line indicates the state when the door is opened and at each position, and the subscripts attached to the door D, the rotating body J, and the wheel B indicate the opening angle of the door, and 90 when fully opened. Set to 0 when closed. The two-digit subscript represents the door opening angle, and the same applies to the following drawings.

FIG. 32A shows a view of the door shown in FIG. FIG. 32B is an elevation view of the door shown in FIG. In the embodiment of FIG. 32, both the wheels Bf and Bb are above the lower surface XX of the door frame, but in the case of FIG. 31 (c), the contact Wf attached to the door frame is almost parallel to the closed door. Wf Since it cannot be attached to the vertical member of the door frame as in FIG. 30B, the wheel Bf cannot be lower than the lower surface XX of the door frame.

31 (a) and 31 (c), the wheel Bf is prevented from moving forward by the contact Wf in the range (a) from the fully open position to the close position, and the “force for rotating the door” acts near the pivot axis O of the door. Thus, even if the spring force is large, the spring force acts weakly on the door. Further, the door Bf is greatly rotated as the wheel Bf gradually moves forward. The action line of “the force that rotates the door” is on a straight line passing through the “contact point between the wheel Bf and the contact Wf” and the rotation axis of the wheel, and the “action line of the force that rotates the door” and the pivot axis O of the door The distance between is small. Therefore, even when the spring force reaches the maximum value when the door is fully opened, the door becomes “a state where the force is insufficient to rotate the door”, and the door barely starts rotating without stopping.

31 (a) and 31 (c), in the range (a) from fully open to immediately before closing, the wheel Bf is prevented from advancing by the contact Wf, and the link device rotates largely without changing the position so that the door moves. Largely rotates in the direction of arrow B in the figure. At this time, the wheel Bb circularly moves in the direction indicated by the arrow D in the figure around the rotation axis Ibf of the wheel Bf that does not change its position.
Immediately before the door closes, the wheel Bf moves away from the contact Wf, the force for rotating the door disappears, and the wheel Bb moves along the “sliding surface K fixed to the door frame” instead. At this time, all of the force of the spring is inherited by the wheel Bb, and the force acting on the door suddenly acts at a position away from the pivot axis of the door. Even if the force of the spring is small, the force of the spring acts strongly on the door because the point of action of the force is far from the pivot axis O of the door.

31 (b) and 31 (d), in the range (b) from immediately before closing to the time of sealing, the wheel Bf moves greatly along the contact Wf, and the wheel Bb changes its course and follows the sliding surface Wb. It moves greatly, but the rotation of the door is small.
At the beginning of the movement of the wheel Bb along the sliding surface K, the action line Fb of “the force for rotating the door” is “the contact point bk between the wheel Bb and the sliding surface K” and the rotation axis Ibf of the wheel. On the straight line that passes, the “line of action of the force with which the wheel Bb presses the sliding surface K” is directed in the direction of the door pivot axis, and the distance from the door pivot axis O is small.

However, when the wheel Bb moves along the sliding surface in the recess Kh, as shown in FIGS. 31B and 31D, the “line of action of the force with which the wheel Bb presses the sliding surface K” is The distance from the door pivot axis is gradually increased to increase the distance from the door pivot axis O, and the door is strongly pressed against the door even when the spring force reaches the minimum value.
That is, the door is strongly pressed against the door while being decelerated.
In the range where the distance between the “operation line of the force that the wheel Bb presses the sliding surface K” and the pivot axis O of the door is small, the spring only brings the door closer to the door stop, and the latch attached to the door When hitting the door, the “force acting on the door” has no force to dent the latch inside the door, and the door stops rotating.

In the case of FIGS. 31B and 31D, when the wheel Bb moves along the sliding surface in the recess Kh in the range from the time immediately before closing to the time of sealing (a), the door is strongly pressed against the door. In the case of FIG. 29, the “distance between the wheel Bb and the door surface” is made constant while the door is moved closer to the door while the “distance between the wheel Bb and the door surface” is increased by the rotation of the link Ab. Move closer to the door. This means that in the case of FIGS. 31B and 31D, the speed at which the door is brought closer to the door is faster than in the case of FIG. 29, and the function of pressing the door while decelerating the door. Is inferior.

In the embodiment of FIGS. 29 and 31, the wheel Bf and Bb are attached to both ends of the shaft Sf, and the embodiment of FIG. 33 is involved in the rotation of the door in the range of (A) from the time of full opening to just before closing. A wheel Bf and a wheel Bb engaged in the sealing of the door in the range of (a) from immediately before closing to the time of sealing are provided. Like the embodiment of FIGS. 29 and 31, the embodiment of FIG. 33 rotates the door largely without moving the wheel Bf in the range (A), and the wheel Bb is relatively in the range (A). It has the feature of moving greatly and sealing the door.

A rotating body J is rotatably supported around a rotating support shaft C provided at the front end of the door D, and a wheel Bf is attached to a rotating support shaft Ibf at one end of the rotating body J with the rotating support shaft C in the middle. Is installed. The link A is connected to the rotation support shaft Ia at the other tip of the rotating body J, and the wheel Bb is mounted on the rotation support shaft Ibb at the tip of the link A. The sliding surface Wf on which the wheel Bf moves in the range (A) and the sliding surface Wb on which the wheel Bb moves in the range (I) are fixed to the door frame.

The rotating body J rotates in the direction indicated by the arrow A in the figure by a spring (not shown) that acts strongly when the door is sealed with a weak force when the door rotates, and the wheel B rolls along the sliding surface K in the direction indicated by the arrow C in the figure. As a result, the door D rotates about the pivot O in the direction of arrow B.
FIG. 5 is a plan view for explaining the operation. FIG. 33A shows the state of the door when fully opened, FIG. 33B shows the state of the door immediately before closing, and FIG.
FIG. 34A is a view showing a state immediately before the door of FIG. 33 is closed. FIG. 34B is an elevation view of the door shown in FIG.

As shown in FIG. 33 (b), the wheel Bf is in the vicinity of the pivot axis O of the door in the range (A) immediately after the door is fully opened to immediately before the door is closed. The rotation of the door is large, i.e., the expansion and contraction of a spring (not shown) is small, and the door is rotated greatly. Therefore, even if the spring force is large, the door is almost insufficient to rotate.
In the range from immediately before closing the door to (i) at the time of closing, the wheel B suddenly moves away from the pivot axis O of the door along the sliding surface K. The rotation of the rotating body J and the movement of the wheel are large and the rotation of the door is small, that is, the expansion and contraction of the spring (not shown) is large, and the door is rotated small, so the force to seal the door is small even if the spring force is small. growing.

The force Fb at which the wheel B presses the sliding surface K is a straight line passing through the contact point b and the rotation axis Ib of the wheel, and the distance Lb between the action line of the force Fb and the door pivot O is small when the door rotates. Large when sealed. That is, the force for rotating the door D in the direction of the arrow B in the figure is small when rotating and suddenly increases when sealed.
When the wheel Bf is on the sliding surface Kf and stays close to the pivot of the door and rotates the door, when the wheel Bf moves greatly along the sliding surface Kf and moves away from the pivot of the door, the force to rotate the door is In some cases, the force for sealing the door is sufficient, and the sealing device provided with the wheel Bb can be omitted to make the device smaller.

As shown in FIG. 34 (a), a long branch AA5 is attached to the door D5 indicated by a dotted line in FIG. 33 (b), and the rotation support shaft C is largely separated from the door surface. As shown in FIG. 33 (B), even if the position of the rotation support shaft C is the same, “the door D5 having a large distance between the rotation support shaft C and the door surface” is The range of (ii) is smaller as shown by the range (good) than in the case of the door D20 having a smaller distance between the doors D20. By adjusting the “distance between the rotating spindle C and the door surface”, the sealing force is reduced. The working section can be shortened.

In the case of FIG. 33, the link A is rotatably supported around the rotation support shaft Ia, but the wheel Bd is lightly pressed against the sliding surface Kd by the weakly acting pull spring Va and moves along the sliding surface Kd. To do. The wheel Bd moves in parallel with the door surface as in the case of FIG. 29, and keeps the distance from the door surface constant, so the wheel Bb does not involve the rotation of the door. Therefore, when the door closes, the case of FIG. The deceleration effect is good, and the link A rotates when the door is opened, so the resistance is less than in the case of FIG.

The wheels Bf and Bb simultaneously have their sliding surfaces Kf. There is no contact with Kb. It is also difficult to make structural contact. 29 and 31, the wheels Bf and Bb are not involved in the rotation of the door at the same time, and the wheel Bf is separated from the sliding surface Kf when shifting from the rotating operation to the sealing operation. Further, when the wheel Bb contacts Kb to rotate the door, the wheel Bf does not participate in the rotation of the door.
On the other hand, in the embodiment of FIG. 5, in the embodiment of FIGS. 29 and 31, a link A is interposed between the shaft Sf and the wheel Bb, so that the wheels Bf and Bb simultaneously slide on the sliding surface Kf. In contact with Kb, the wheels Bf and Bb can simultaneously participate in the rotation of the door.

In the embodiment of FIG. 33, the wheels Bf and Bb can be simultaneously involved in the rotation of the door because the spring force is distributed to the two wheels Bf and Bb, and the wheels Bf and Bb transmit rotations separately. Although the mechanism is interfered with each other and decelerates, the wheel Bf is separated from the sliding surface Kf so that the wheel Bf does not participate in the rotation of the door.

In the embodiment of FIGS. 29, 31 and 33, the door B is not generated by the wheel Bf alone, but the door Bb which is far from the pivot of the door is also generated by the door Bb. The wheel Bf that increases “the force that rotates the door” immediately before the door is closed is separated so that the rotation speed of the door does not accelerate by preventing the wheel from temporarily acting. By starting the wheel Bb, which increases to a maximum, the rotational speed of the door is returned to the start from zero.

29, 31 and 33, the gradient of the sliding surface Kb is such that “the direction of the force with which the wheel Bb presses the sliding surface Kb” is “on the door pivot” as indicated by Fb in FIG. Starting from the “direction toward”, when the door is sealed, it is designed to shift to “the tangential direction to the circular motion of the door” as indicated by Fb in FIG. 29 (d), and the wheel Bb is moved to the sliding surface Kb. It is designed to gradually increase the rotational force of the door from the beginning of contact until sealing.
When the wheel Bb is on the sliding surface Kb at a position where the door is opened a little and the hand is released, the wheel must start to move, not stop, and start to rotate. However, if a bearing is mounted on the wheel and the rolling friction is small, the wheel can start to start even if the gradient of the sliding surface Kb is very gentle. In this case, the rotational speed of the door should be extremely slow. I can do it.

When the rotational speed of the door is low before the wheel Bb gets on the sliding surface Kb, the rotational speed of the door is decelerated as soon as the wheel Bf leaves the sliding surface Kf, and the wheel Bb eventually becomes the sliding surface Kb. Try to reach the speed to move on.
The present invention is not intended to stop a “door that rotates with a strong rotational force” like a normal door closer when relaying from a device that rotates a door to a device that seals the door. "To stop.
Until the wheel Bb contacts the sliding surface Kb, the wheel Bf is involved in the rotation of the door and rotates the door with a small force so that the wheel Bf does not participate in the rotation of the door when it comes into contact with the sliding surface Kb. Then, when the wheel Bb comes into contact with the sliding surface Kb, dynamic inertia is attached to the door, and the wheel Bb does not pass over the sliding surface Kb all at once.

Since the wheel Bf is in contact with the sliding surface Kb without passing the time away from the sliding surface Kf, the wheel Bb is involved in the rotation of the door without having time to reduce the rotational speed of the door. Since the rotation of the door by the wheel Bb can be extremely slowed, the rotation speed of the door is reduced when the wheel Bb moves on the sliding surface Kb.
That is, the movement of the wheel Bb that seals the door also has a function of reducing the rotational speed of the door.

As shown in FIG. 34, the wheel Bb is attached to the upper end of the rotation support shaft Ibb of the link A, and the wheel Bd is attached to the lower end. The wheel Bb moves along the sliding surface Kb where the wheel Bb is fixed to the door frame in the range of (Yes), and the wheel Bd moves along the sliding surface Kd fixed to the door in the direction of arrow D in the figure. To do.
The embodiment of FIG. 33 differs from the embodiment of FIGS. 29 and 31 in that the wheel Bb is in contact with the two sliding surfaces and moves, and the movement in the direction in which the wheel approaches the door frame is also restricted. On the other hand, in the example of FIGS. 29 and 31, the wheel Bb moves along one sliding surface, and the movement in the direction in which the wheel approaches the door frame is not restricted.
In the embodiment of FIG. 33, not only is the movement of the door approaching the door stop restricted, but also the movement of the wheel Bb is restricted by more sliding surfaces, so the spring force is dispersed and the wheel The door is sealed more slowly than in the embodiment of FIGS. 29 and 31.

29, 31 and 33 The door is tightly sealed by a so-called wedge effect that generates a large force in a perpendicular direction with a small force parallel to the closed door. When the door is sealed as shown in FIG. 33 (c), the rotation support shaft Ia rotates around the rotation support shaft C in the direction of arrow A in the figure, and the rotation support shafts C, Ia, Ibb are aligned in a straight line. Since the distance between the rotation support shaft C and Ibb is increased, the wheel Bb is fitted in the recess Wbh. At this time, due to the wedge effect, a large sealing force acts in a direction perpendicular to the door surface.

As shown in the embodiments of FIGS. 29, 31 and 33, the moving direction of the wheel engaged in the sealing operation is parallel to the closed door, and the direction of the force with which the wheel Bb presses the sliding surface Kb is perpendicular to the closed door. It is.
In the embodiment of FIG. 29, the force with which the wheel Bb presses the sliding surface Kb is supported by the shearing force acting on the shaft Sf and transmitted to the bearing Sz.
In the embodiment of FIG. 31, the force with which the wheel Bb presses the sliding surface Kb is supported by the axial force acting on the link Ab and transmitted to the “connection axis Cb between the link Ab and the door”.
In the embodiment of FIG. 33, the force with which the wheel Bb presses the sliding surface Kb is directly transmitted to the door by the wheel Bb itself.

29, 31 and 33, the force connecting the "contact point b of the wheel Bb with the sliding surface Kb" and the "portion where the wheel Bb presses the sliding surface Kb to the door" The action line Zb is perpendicular to or close to the closed door. “The portion where the force that the wheel Bb presses the sliding surface Kb is transmitted to the door” is a connecting portion between the bearing Sz and the door in the case of FIG. 1, and the connecting shaft Cb between the link Ab and the door in the case of FIG. In the case of FIG. 33, it is a contact point between the wheel Bb and the door D.

When the door is sealed, the “action line Zb of the force connecting the contact point b between the wheel Bb and the sliding surface Kb and the portion where the wheel Bb presses the sliding surface Kb is transmitted to the door” is perpendicular to the closed door. If so, the door cannot be opened.
The more the door cannot be opened, the stronger the sealing force. When the line of action Zb of this force is not perpendicular to the closed door, the door can be opened with a weak force, and the sealing force does not act strongly even if the spring force is strong. If the angle is right, the sealing force is strong even if the spring force is weak.

When the closed door is opened, the wheel Bb moves circularly around the pivot axis O of the door. In the case of FIG. 31, the wheel Bb moves along the circular movement, and in the case of FIGS. 29 and 33, the wheel Bb moves in a direction perpendicular to the circular movement. The door cannot be opened without moving. In the case of FIG. 31, the door can be opened more easily than in the case of FIGS. 29 and 33, and as shown in FIG. 31 (d), the door can be easily opened if the link Ab is not perpendicular to the closed door. In that case, the force for sealing the door is inferior to that in FIGS.
However, in the case of FIG. 31 as well as in the case of FIGS. 29 and 33, when opening the closed door, the door does not open unless the “same sealing force acting on the door” is applied in the opposite direction. The force action line Zb is not perpendicular to the closed door.

In FIG. 29, the wheel Bb moves in the axial direction of the shaft, and in FIG. 3, the wheel Bb rotates about the support shaft Cb and presses the sliding surface Kb, directly acting on the door and rotating the door. Let
In the case of FIGS. 29 and 31 until the end of the sealing operation, the apparatus stops if the rotation of the door stops, but in the case of FIG. 33, the apparatus stops compared to the case of FIGS. 29 and 31 even if the rotation of the door is stopped. Can move without being related to. The device of FIG. 33 acts weakly on the door as the spring force does not work effectively as compared with the case of FIGS. 29 and 31, and the door is slowly sealed.

In the case of FIG. 33, the movement of the wheel Bb is not directly linked to the rotation of the door, but indirectly rotates the door. In FIG. 31, part of the “rotation of the wheel Bb around the support shaft Cb” is the rotation of the door accompanying the sealing, and the rotation of the door is accelerated by the rotational movement of the wheel. In the case of FIG. 33, the movement of the wheel Bb is not accompanied by the rotation of the door, and the rotation of the door is not accelerated. In the case of FIG. 31, the door is rotated together with “acceleration of door rotation”. In the case of FIG. 5, the door is rotated without “acceleration of rotation of the door”. The door will be sealed slowly.
The normal door closer including the cases of FIGS. 29 and 31 has a function of rotating the door and performs a deceleration function in all the door closing operations, but in the case of FIG. 33, the door is rotated when the door is sealed. There is a feature that the function does not work.

Further, when the wheel Bb and the wheel Bd are fixed to the rotation support shaft Ibb, the wheel Bb and the wheel Bd rotate in the direction indicated by the arrow E in the figure, and the wheel Bb advances while rotating in the reverse direction along the sliding surface Kb. , Brake and slow down the door closing speed.

As the rotating device provided near the door pivot has a function to seal the door by applying a strong force to the rotation of the door at the end, the sealing device provided far from the door pivot is used to rotate the door. First, it has a function of rotating the door by applying a weak force first. Both the rotating device provided near the pivot of the door and the sealing device provided far from the pivot of the door have a function of rotating the door and a function of sealing the door by itself.
29, 31, and 33 have the function of sealing the door by the device for rotating the door, and FIGS. 35 and 36 have the function of rotating the door by the device for sealing the door.

In the embodiment of FIGS. 29, 31 and 33, the action point of the driven door is brought close to the center of rotation of the door so that the spring rotates the door, but the force is insufficient. In the 36th embodiment, the position of the applied point of the rotating body on the driving side is moved away from the center of rotation of the rotating body, so that the spring rotates the door so that the force is insufficient.
In the embodiment of FIG. 35, wheels Bf and Bb are attached to a rotating body J that is rotatably supported around a connecting shaft C provided on the door, and the wheel Bf involved in the rotation of the door is the rotation center of the rotating body J. The distance between the wheel Bb and the center of rotation C of the rotating body J is small.

The wheel Bf moves along the sliding surface Kf fixed to the door frame, but moves greatly on the sliding surface Kf unlike the embodiments of FIGS.
The rotator J rotates about the connecting shaft C in the direction of arrow A in the figure, and the door rotates in the direction of arrow B in the figure. The rotating body J simply rotates about the connecting shaft C, and the door is rotated from full open to closed, and the door is strongly brought into close contact with the door.

FIG. 35A is an operation explanatory diagram in the range (A) when the door is rotated, and FIG. 37B is an operation explanatory diagram in the range (I) when the door is sealed. FIG. 36A is a diagram of the embodiment of FIG. 35, and FIG. 36B is an elevation view.
D2, C2, J2, Bb2, and Bf2 indicated by solid lines in FIG. 35A are plan views showing the state of the door, the connecting shaft, the rotating body, and the two wheels at the end of the rotation, respectively. The wheel Bf2 is in contact with the sliding surface Kf, but the wheel Bb2 is not in contact with the sliding surface Kb. D1, C1, J1, Bb1, and Bf1 indicated by solid lines in FIG. 35B are plan views showing the state of the door, the connecting shaft, the rotating body, and the two wheels immediately before closing. The wheel Bf1 is separated from the sliding surface Kf, and the wheel Bb2 is in contact with the sliding surface Kb.

In the state immediately before closing shown by the solid line in FIG. 35 (b), the straight line Zb passing through the “contact point b between the wheel Bb and the sliding surface Kb” and the connecting shaft C is not perpendicular to the closed door but seals the door. There is no force to dent the latch even though there is little force to rotate the door. Further, a force for sealing the door is generated only when the door rotates and the straight line Zb becomes a right angle to the closed door. However, in order to open the closed door, the straight line Zb cannot be perpendicular to the closed door.

Since the connecting shaft C is close to the door pivot axis O, the “rotating force that rotates the rotating body J in the direction of the arrow a in the figure” with respect to the connecting shaft C is applied to the handle located far from the door pivot shaft O. In FIG. 35A, “wheel Bb” is required so that the “rotational force for rotating the rotating body J about the connecting shaft C” is small when the door is rotated. The distance between the action lines Fb4 to Fb6 of the force that presses the sliding surface Kb and the pivot O of the door is small and constant. The shape of the sliding surface Kf shown in FIG. 35 (a) is an involute curve.
When the closed door is opened, the path for sealing is traced in the reverse direction. When the wheel Bb moves along the sliding surface Kb, the wheel Bf does not contact the sliding surface Kf, and the wheel Bb does not touch the sliding surface. When moving away from Kb, the wheel Bf comes into contact with the sliding surface Kf and moves along the sliding surface Kf.

As described in FIG. 35, the two wheels Bf and Bb attached to the “rotary body J rotating around the connecting shaft C revolving around the door pivot O” simultaneously contact the two sliding surfaces Kf and Kb. I can't do that. However, as shown in FIG. 37, if one of the two sliding surfaces can be rotated about, for example, the rotation axis Ikb on which the sliding surface Kb is fixed to the door frame W, the two wheels Bf, Bb Can move along two sliding surfaces Kf and Kb at the same time.

As shown in FIG. 37 (a), a torsion spring Uv is charged on the rotation shaft Ikb, the rotating body J rotates about the connecting shaft C in the direction indicated by arrow A, and the door D moves on the axis O about the axis O. Rotate in the B direction. When the wheel Bb comes into contact with the sliding surface Kb and at the same time the wheel Bf moves through the passage between the two sliding surfaces Kf and Kff, the sliding surface Kb is in the direction indicated by the arrow E in FIG. The wheel Bb moves in the direction of arrow C in the figure along the sliding surface Kb.
If the rotating body J has a force to continue to rotate about the connecting shaft C, the door D rotates until it is sealed.

Initially, when the wheel Bb comes into contact with the sliding surface Kb, the sliding surface Kb is rotated in the direction indicated by the arrow E in the drawing, and resistance is applied to the rotation of the door. However, as shown in FIG. The sliding surface Kb rotates in the direction opposite to the arrow E in the figure and the torsion spring Uv acts in the direction of sealing the door.
In the embodiment shown in FIG. 35, if the sliding surface Kb is rotatable as shown in FIG. 37, resistance is applied immediately before the door is closed, and the rotational speed is reduced. This resistance is released when the door is sealed and does not weaken the sealing force.

In the range of (a) from when the door is fully opened to just before closing, the spring rotates the door barely in the state where the force is insufficient, so the rotation speed of the door follows the strength of the spring force, Inertia force is rarely reached, it stops as soon as the spring force is lost, and decelerates as soon as it becomes weaker. In the range of (a) from when the door is fully opened to just before closing, the door rotation speed is accelerated even if the door is rotating at a low speed, but the door rotation speed that has reached the maximum value when sealed is acceptable.

In the range from just before the door closes to (i) at the time of closing, the latch does not go into the door and the door must not stop immediately before closing, so the wheel Bb moves greatly and a large force acts .
In the present invention, the door accelerates only when the force of the spring acts on the door immediately before the door closes and tries to seal, and the present invention provides a strong spring force on the door just before the door closes. The acceleration of the rotational speed of the door is made as small as possible within the range of action.

In order to reduce the rotation speed of the door that has been accelerated in the range (ii) and reached the maximum value as much as possible, first, by reducing the rotation of the door as the wheel moves in the range (ii) as much as possible. is there.
Secondly, a force larger than necessary is not applied at the time of sealing, and the movement of the wheel from the position immediately before the closing of the wheel Bb to the position at the time of sealing is made as small as possible.
Thirdly, by increasing the time required for “moving the wheel from the position immediately before closing the wheel Bb to the position at the time of sealing” as much as possible, there is no bearing with a large rolling friction from the metal wheel containing the bearing. It is conceivable to use a metal wheel or a rubber wheel without a bearing. In the present invention, a wheel with less rolling friction is employed to rotate the door with less force, and it is not preferable to employ a wheel with greater rolling friction to rotate the door with a greater force.

Fourth, it is a method of sealing after applying a brake just before closing, but receiving a reaction force that stops the accelerated door with the closing device in the vicinity of the door greatly affects the mounting portion of the closing device and the pivot portion of the door. Power will be applied. A large pulling force acts on these mounting bolts to cause loosening, causing the door or closing device to rattle, and less for the door than if the entire door collides with the door frame.
Applying the brake immediately before closing without limiting the acceleration of the door until closing, simply causes a collision between the door and the door frame just before closing. The door will be damaged to receive locally. On the other hand, in the present invention, the closing speed of the door is set as low as possible to limit the acceleration of the door, and the large force stored in the spring before the sealing is performed so that the device performs another work, thereby sealing the door. The acceleration of time and the kinetic energy attached to the door until then are absorbed.

If the sliding surface Kb is rotatable as shown in FIG. 37, the two wheels Bf and Bb can move along the two sliding surfaces Kf or Kff and Kb at the same time. If the rotation center C of the rotating body J can be separated from the circular orbit centered on the door pivot axis O, the two wheels Bf and Bb are simultaneously along the two sliding surfaces Kf or Kff and Kb. Can move.
38, the rotation center C of the rotating body J is provided on a rotating body JJ that is rotatably supported by a connecting shaft CC attached to the door, and FIG. 38A shows the position of the connecting shaft CC on the pivot axis O of the door. FIG. 38B shows a case where the position of the connecting axis CC is far from the pivot axis O of the door.

As shown in FIG. 38 (a), a torsion spring Uv is charged in the rotating shaft CC, the rotating body J rotates about the connecting shaft C in the direction of the arrow a in the figure, and the rotating body JJ uses the connecting shaft CC as an axis. While rotating in the direction of the arrow in the figure, the door D rotates about the pivot O in the direction of the arrow B in the figure. The wheel Bb contacts the sliding surface Kb and moves along the sliding surface Kb in the direction of the arrow C in the figure. Even if the rotating body JJ rotates about the connection axis CC in the direction of the arrow in the figure, the rotating body J continues to rotate about the connection axis C.

Since the rotating body J does not rotate in the direction opposite to the arrow a in the figure on the way around the connecting shaft C, the “spring loaded on the connecting shaft C and rotating the rotating body J” continues to expand and contract. For example, when “a spring loaded on the connecting shaft C and rotating the rotating body J” is a pulling spring, the length of the spring is becoming shorter, and the rotating body JJ has the connecting axis CC as an axis in the direction of the arrow in the figure. Even if it is rotated, it will not become long. As long as the length of the spring becomes shorter, the door continues to rotate as long as the spring D has a force to keep the rotating body J rotating about the connecting shaft C, and the door D rotates until it is sealed. “The door continues to rotate as long as the length of the spring becomes shorter” is also true for the case of FIG.

When the wheel Bb comes into contact with the sliding surface Kb, the connecting shaft C rotates about the connecting shaft CC in the direction indicated by the arrow E in the figure, but the direction indicated by the arrow H is parallel to the closed door in FIG. Near, near right angle to the closed door in FIG. When the wheel Bb moves along the sliding surface Kb in the direction of the arrow C in the figure, the connecting shaft C rotates in the opposite direction to the arrow E in the figure, and the torsion spring Uv acts in the direction of sealing the door.

As shown in FIG. 38 (a), when the wheel Bb comes into contact with the sliding surface Kb, the position of the connecting shaft C tries to move from the position of C3 to the position of C22 by circular movement about the pivot axis O of the door. In order for the wheel Bf to move along the sliding surface Kf and the wheel Bb to move along the sliding surface Kb, the wheel Bf moves along the sliding surface Kff, and the position of the connecting shaft C is C3. Must move from position to position C2.

Thereafter, the wheel Bb moves along the sliding surface Kb while the rotating body J rotates about the connecting shaft C in the direction of arrow A in the figure, but the movement of the wheel Bf along the sliding surface Kf is small. Further, the door rotates from D2 to D1. Thus, the position of the connecting shaft C moves from the position of C3 to the position of C2 and then moves to the position of C1 while moving from the position of C3 to the position of C1. Accordingly, the rotation speed of the door is reduced.

In the case shown in FIG. 38 (b), the wheel Bb moves along the sliding surface Kb when the wheel Bb contacts the sliding surface Kb, and at the same time, the wheel Bf moves along the sliding surface Kff. The position of the connecting shaft C must move from the position of C3 to the position of C2. At this time, the rotating body JJ rotates in the direction of the arrow in the figure around the connecting shaft CC, and the door rotates from D2 to D1. Move. In the case of FIG. 38 (a) and FIG. 38 (b), the rotation of the rotating body JJ around the connection axis CC is accompanied by the rotation of the door, but in the case of FIG. 38 (b), the connection axis C moves. The direction of arrow E in the figure is close to a right angle with the closed door, and the door is rotated more than in the case of FIG.

Thereafter, the rotating body J continues to rotate about the connecting shaft C, and the wheel Bb moves along the sliding surface Kb, but the movement along the sliding surface Kff of the wheel Bf is small. At this time, the rotating body JJ rotates about the connecting shaft CC in the direction opposite to the arrow direction in the figure, but the door does not rotate.
In this way, while the position of the connecting shaft C moves from the position of C3 to the position of C1, it stops at the position of C2 from the position of C3 and then moves to the position of C1. At this time, the door is excessively rotated, and a large load is applied to the spring.

When there is enough force to rotate the driven body, such as an automobile engine or electric motor, the large rotation on the drive side is decelerated and transmitted to the small rotation on the driven side by changing the speed ratio. The small rotation on the side can be accelerated and transmitted to the large rotation on the driven side. In the case of a door that moves with a spring, it does not move at a constant speed like an automobile engine or an electric motor, so when a large force is applied, the expansion and contraction of the spring slows down and decelerates, and when the load disappears The spring expands and contracts in an instant.
For example, when the door D is rotated by a large movement of the wheel Bf or Bb, the spring force is sufficient to rotate the door, and the movement of the wheel Bf or Bb is completed instantaneously and decelerated. Never do.
Conversely, when the door D is to be rotated greatly by a small movement of the wheel Bf or Bb, the spring force is insufficient to rotate the door, and the wheel Bf or Bb barely moves and decelerates. become.

A speed reduction device operated by an engine or an electric motor accelerates when moving by a spring, and conversely, an acceleration device operated by an engine or an electric motor decelerates when moved by a spring. In both the case of FIG. 37 and FIG. 38, resistance is applied to the rotation of the rotating body JJ, so that the spring becomes insufficient in force and the rotational speed of the door is reduced.
Attempting to rotate the door significantly with a small extension of the spring slows down the rotation speed of the door, and when the wheel moves too little to rotate the door, the spring becomes insufficient and the door is barely rotated. This is the basic idea of the present invention “the rotational speed of the door is reduced without using a resistor”.

35 and 36, the device for sealing the door also has a function of rotating the door. The embodiment shown in FIGS. 39 and 40 is obtained by adding a function of rotating the door to the “device for sealing while decelerating” shown in FIGS.
As shown in FIG. 40, a tension spring V is charged around the rotation axes C and CC, the rotation body J rotates about the connection axis C in the direction of the arrow a in the figure, and the rotation body JJ uses the connection axis CC as an axis. While rotating in the direction of the arrow in the figure, the door D rotates about the pivot O in the direction of the arrow B in the figure.

FIG. 39 (a) is an explanatory view of the operation of the device that rotates when the wheel Bf moves along the sliding surface Kf, and illustrates the state of the entire process from the fully opened state to the closed state. In FIG. 39B, the wheel Bf moves along the path between the sliding surfaces Kf and Kff, and at the same time, the wheel Bb moves along the sliding surface Kb, so that the position of the wheel Bb is as shown in FIG. ) To the position of Bb1 shown in FIG. 39B, and the position of the connecting shaft C between the rotating bodies J and JJ is changed from the position of C11 shown in FIG. 39A to FIG. It is operation | movement explanatory drawing of the apparatus which shows the state which moves to the position of C1 shown to the state of the process from the time just before closing to the time of closing.

40 (a), (b) and (c) are structural views showing the state of the device when the wheel Bb shown in FIG. 39 (b) is at the respective positions Bb2, Bb1 and Bb0, and the tension spring V is rotated. Along the guide Gj of the circular arc fixed around the axis C, one winding start point is attached to the spindle Sj of the rotating body J, and the other end is attached to the spindle Sd provided on the door.
In the process from FIG. 40 (a) to FIG. 40 (c), even if the rotating body JJ rotates about the connecting shaft CC in the direction of the arrow in FIG. The rotating body J and the door D continue to rotate. The further away the position of the support shaft Sd is from the pivot axis O of the door, the longer the length of the tension spring V does not extend even if the rotating body JJ rotates about the connection shaft CC.

In FIG. 40 (a), the connecting shaft CC moves on the circumference Rcc centering on the pivot O of the door, and rotates when the position of the connecting shaft C between the rotating bodies J and JJ moves from the position C11 to the position C1. The body JJ rotates greatly, and the position of the door rotates greatly from the position of D2 to the position of D1. During this time, there is little change in the length of the spring, and the door is moved greatly by the small expansion and contraction of the spring. The spring is insufficient to rotate the door, and the rotation speed of the door is greatly reduced immediately before sealing.

In FIG. 40C, the action line of the force for sealing the door is on a straight line passing through “the contact b0 between the wheel Bb and the sliding surface Kb” and the rotation axis Ibb of the wheel Bb. The closer the straight line Zb0 passing through the contact b0 "to the surface Kb and the rotation axis C0 of the wheel Bb is at a right angle to the closed door, the smaller the rearward when opening the closed door, and the smaller the sealing force. The wheel Bb presses the sliding surface Kb with the rotational force around the rotational axis C0, but if the rotating body J is rotatable, the reaction force hardly occurs and the rotating body J becomes unable to rotate. The reaction force is generated for the first time, and the door is tightly sealed.

29, 31, 33, 35, and 40 rotate the door by moving the wheel attached to the door along the sliding surface fixed to the door frame. The wheel can be rotated by moving the wheel attached to the door frame along the moving surface.
In the embodiment of FIG. 41, the attachment of the wheel and the attachment of the sliding surface are opposite to each other in the case of FIG. The wheel that is attached to the door frame moves along the sliding surface fixed to the door to rotate the door. The wheel that attaches to the door of FIG. 29 is attached to the door frame, and the sliding that attaches to the door frame of FIG. The surface is attached to the door.
In the embodiment of FIGS. 31, 33, 35, and 40, the relationship in which the attachment of the wheel and the attachment of the sliding surface are reversed is established as in the embodiment of FIG.
29, 31, 33, 35, and 40, the door frame is fixed and the door is rotating. However, if the door is fixed, the door frame is rotated. In this case, the rotation direction of the door is reversed. In the embodiment of FIG. 41, the door frame is fixed in the embodiment of FIG. 29 and is rotated in the direction in which the door is closed by reversing the moving direction of the wheels.

FIG. 42 is an explanatory diagram of a spring mechanism for rotating the drive shaft of the closing device described above, and is an operation explanatory diagram regarding a relay from the spring V1 engaged in the rotation of the door to the spring V2 engaged in the sealing. In FIG. 42, the rotation and sealing of the door are not processed by one spring, but are processed by two springs, a spring for rotating the door and a spring for sealing the door.
43 to 47 are explanatory views of the operation of the spring that acts on the door at the last moment of sealing. 43 to 47 are designed to suddenly generate a large force only at the moment when the door is sealed, and to reduce the rotation of the door due to the suddenly generated large force. .
In FIG. 42, the rotating body J fixed to the rotating shaft Q around the rotating shaft Q provided on the plate W rotates in the direction of arrow → i in the drawing to close the door. Links S1 and S2 are rotatably supported on rotation support shafts SJ1 and SJ2 provided on the rotating body J, and tension springs V1 and V2 are connected to connection shafts SU1 and SU2 at the tips of the links S1 and S2, respectively. One end is connected. The other ends of the tension springs V1 and V2 are connected to a connecting shaft SA at the tip of the rotating arm A that is pivotally supported by the rotating shaft I attached to the plate W and a connecting shaft SW provided on the plate W, respectively.

42A shows a state when the door is fully opened, FIG. 42B shows a state immediately before closing, and FIG. 42C shows a state when the door is sealed. As shown in FIG. 42A, the link S1 rotates around the rotation axis Q while its side surface is connected to the rotation axis Q, and the end Sv of the link S1 moves circularly around the rotation axis Q. Thereafter, the link S1 moves away from the rotation axis Q, and as shown in FIG. 42B, immediately before the door is closed, the spring V returns to its natural length, and the spring force becomes zero.
In the process of shifting to FIGS. 42A to 42B, the length of the spring decreases and its force is weakened, but the distance L1 between the line of action F1 of the spring force and the rotation axis Q increases, and the spring V1 is The rotational moment applied to the rotating body J is kept as constant as possible.
The spring V1 is a coil spring having a large coil diameter with respect to the length, and the position to return to the natural length is constant. When the force of the spring V1 becomes zero, as shown in FIG. It rotates in the direction of arrow → b in the figure around the rotation axis I.

As shown in FIGS. 42A and 42B, the link S2 is in contact with Gs from the time of full opening until just before closing, and keeps the end Sv2 at the position of the rotation axis Q. Accordingly, there is no change in the length of the spring V2 from the time of full opening until just before closing, and the force of the spring V2 is not involved in the rotation of the rotating body J. As shown in FIG. 42C, before the fulcrum SV of the spring is separated from the rotation axis Q, the axis line of the link S and the axis line of the spring are bent, and the moment of separation becomes a straight line. Immediately before closing, the link S2 moves away from the contact Gs, and while increasing the distance L2 between the action line F2 of the force of the spring V2 and the rotation axis Q, the rotation moment around the rotation axis Q is increased and the door is moved with a strong force. Seal. At this time, the greater the distance between the rotating shaft Q and the connecting shaft SJ2, the greater the distance L2 between the action line F2 of the force of the spring V2 and the rotating shaft Q due to the smaller rotation of the rotating body J.

The structure shown in FIG. 42 (c) is obtained by replacing the spring V and the link S in the structure shown in FIGS. 42 (a) to 42 (c). One end of the springs V1, V2 is connected, and the other end of the springs V1, V2 is connected to one end of the links S1, S2. FIG.42 (c) shows the state at the time of a full open, as shown to Fig.23 (a), and the structure shown in FIG.42 (c) has the same effect as the effect demonstrated to Fig.23 (a)-(c). Can be obtained.
In the structure shown in FIG. 42C, the hit Gs is provided not on the rotating body J but on the plate W. As in the case of FIGS. 42A to 42C, the link S2 hits from the time of full opening to just before closing and is brought into contact with G2 to keep the end Sv2 at the position of the rotation axis Q.

In the spring mechanism shown in FIG. 42, the rotation of the rotating body J until the fulcrum SV of the spring is separated from the rotation axis Q and the rotation moment about the rotation axis Q is greatly increased is as small as possible, that is, sealed as much as possible. In order to reduce the rotation of the door, the larger the distance between the rotating shaft Q and the connecting shaft SJ2, the better. However, the device needs to be enlarged. In FIG. 43, a large rotational force is instantaneously applied to the door during sealing without enlarging the apparatus.
The link S, the rotation shaft I spring V and its fulcrum SV, SW shown in FIG. 43 perform the same operation on the link S2, the rotation shaft SJ2 spring V2 and its fulcrum SV2, SW shown in FIG. The wheel B is attached to the link S. In FIG. 43, instead of the contact Gs shown in FIG. 47, the circumferential sliding surface K2 centering on the rotation axis Q brings the end Sv to the position of the rotation axis Q. It plays the role of fastening.

As shown in FIGS. 43A and 43B, the fulcrum SV of the spring V is held at the position of the rotation axis Q by the wheel B moving along the circumferential sliding surface K2. As shown in FIG. 43 (b), the wheel B moves along the concave surface of the sliding surface K1 even if the wheel B moves away from the sliding surface K2, and the wheel B slides near the end point of the sealing operation in FIG. 43 (c). The spring fulcrum SV is greatly pulled away from the rotation axis Q away from the moving surface K1.
As shown in FIG. 43 (b), before the fulcrum SV of the spring is separated from the rotation axis Q, the axis of the link S and the axis of the spring are bent, and as shown in FIG. 43 (c), at the moment of separation. It becomes a straight line. Thus, when the link S and the spring suddenly become a straight line, the distance S between the action line F of the force of the spring V and the rotating shaft instantaneously shows the maximum value, so that the rotational moment around the rotating shaft also causes the door to close. It occurs instantaneously at the end. That is, the force of the spring V acts only on a slight rotation of the door on which the latch operates.

When the wheel B moves on the sliding surface K1K2, the rotational speed of the rotating body J is reduced by rolling friction, but when the sealing force is finally applied, the spring V is released from these frictional resistances and sealed. It will show you all the power you can have. When the wheel B moves on the sliding surface K1, the rotational speed of the door is reduced. Further, when the wheel B moves on the sliding surface K2, the rotational speed of the door is decelerated just before closing, and temporarily stops. 42, the end Sv of the spring is held at the position of the rotation axis Q by the contact Gs, and the end Sv of the spring is moved to the rotation axis Q by the sliding surface K2 as shown in FIG. If it is kept in position, the door can be rotated while decelerating and the door can be tightly sealed simply by attaching the drive part of this spring structure to the door.
In FIG. 43 (c), the arrow → b indicates the moving direction of the wheel B when the closed door is opened, and the wheel B moves on the inner convex surface of the sliding surface K1 when the door is closed. When opening, the wheel B moves on the outer convex surface of the sliding surface K1.

43 (d) and 43 (e), it is assumed that the rotation axis Q shown in FIGS. 43 (a) and 43 (b) is composed of a circular rod M and a cylindrical bearing N through which the circular rod M penetrates. When the rotating body J is attached to the end of the circular rod M away from the bearing N and the spring force is applied to the end of the circular rod M, the concentrated load acts on the end of the cantilever. On the other hand, the circular rod M is bent and causes friction with the cylindrical bearing N through which the circular rod M passes. As shown in FIGS. 43A to 43B, the rotation of the rod M is resisted and decelerated while the end Sv is kept at the position of the rotation axis Q.
The friction between the circular rod M and the bearing N increases as the distance Lm from the cylindrical bearing N to the end of the circular rod M on which the spring force acts increases, and the end of the circular rod M from the cylindrical bearing N increases. The rotational speed of the door can be adjusted by adjusting the distance Lm. If the rotating shaft Q shown in FIG. 42 is made into the cylindrical bearing N and the circular rod M shown in FIGS. 43 (d) and 43 (e), if the rotation of the rotating shaft Q rotating only by this spring is transmitted to the rotation of the door, By simply attaching the drive part of the spring structure to the door, the door can be rotated while decelerating and the door can be tightly sealed.

Other examples of the “spring that suddenly generates a large force at the moment when the door is sealed” shown in FIG. 43 are shown in FIGS.
44 shows the tangential movement of the circular motion around the connection axis Sj of the link S as in FIG. 43, and the wheel Bs attached to the tip of the link S slides on the circumference around the rotation center Q. It is blocked by moving along the upper Kw, and the fulcrum Sv of the spring is kept at the position of the rotation center Q.
In the case of FIG. 43, the wheel Bs moves along the inside of the arc of the sliding surface Kw, whereas FIG. 44 shows the movement of the wheel Bs along the outside of the arc of the sliding surface Kw. When the wheel Bs changes to the sliding surface Kw, the fulcrum Sv of the spring is pulled to the position of the rotation center Q.
In the case of FIG. 43, it rotates while shortening the length of the spring, and in the case of FIG. 44, it rotates while extending the length of the spring. The rotation speed of the rotating body J is accelerated in the case of FIG. 43 and decelerated in the case of FIG.

In FIG. 44, an arc sliding surface Ks centered on the fulcrum Sv of the spring is provided at the tip of the link S, and the wheel Bw moves along the sliding surface Ks, so that the connection axis Sj of the link S is centered. The movement in the tangential direction of the circular motion is prevented.
45 and 47 are different from FIGS. 43, 44, and 45, the spring V is rotatably supported around the rotation fulcrum Sj of the rotating body J, and the link S is rotatably supported around the rotation fulcrum Sw. .
When the door is opened from the state where the door is completely closed, the rotating body J rotates in the opposite direction to ⇒, and the wheel B passes on the surface on the opposite side to the surface that is in contact with the sliding surface K when the door is closed. To do. The surface where the wheel B contacts the sliding surface K when the door is closed is the inner side in FIGS. 43, 46 and 47, and the outer surface in FIGS.
When the door is opened, the wheel B passes the outside in FIGS. 43, 46 and 47, and passes the inside in FIG. In all cases of FIGS. 43 to 47, when the door is opened, it passes through a route different from the route when the wheel B is closed, and in either case, it passes while extending the spring. You can also open the door with less resistance

In FIG. 46, the wheel Bw is attached to the tip of an arm Ab that rotates around the rotation axis Ia. When the door is closed, the arm Ab rotates in a direction that hits Gb, and when the door is opened, rotates in a direction away from Gb. In the case of FIG. 45, when the door is opened, the fulcrum Sv of the spring returns to the position of the rotation center Q while keeping the spring and the rotating body in a straight line. When the door closes and the spring fulcrum SV moves away from the center of rotation Q and the door hits the door in a moment, the door rotates and the spring expands and contracts slightly, but in this case the door is moved away from the door. When opening, in FIG. 47, the rotation of the door and the expansion and contraction of the spring are slight.

Operation explanatory diagram of a rotating device that stops just before closing and has a single link.
Operation explanatory diagram of the rotating device whose direction of force is directed to the pivot of the door Operation explanatory diagram of the rotating device where the rotation angle of the connecting part turns from decreasing to increasing Operation explanatory diagram of a rotating device that constrains the rotation of the connecting part and rotates in the same direction Operation explanatory diagram of the rotating device that constrains the rotation of the connecting part and rotates in the opposite direction Operation explanatory diagram of a rotating device consisting of a rotating body whose rotating shaft revolves

Operation explanatory diagram of the rotating device of the slider crank mechanism that stops just before closing
Operation explanatory diagram of the rotating device where the movement of the wheel is restrained at the end of the long hole Explanatory diagram of operation when slider crank mechanism is rotating and stopping Operational explanation diagram when slider crank mechanism is stopped

Operation explanatory diagram of the rotating device which stops just before closing and the connecting part consists of two links
Operation explanatory diagram of a rotating device consisting of two links Operation explanatory diagram of the rotating device whose direction of force is directed to the pivot of the door Operation explanatory diagram of the rotating device where the rotation angle of the connecting part turns from decreasing to increasing Explanatory drawing of the device which restrains rotation of a connection part

Operation explanatory diagram of a closing device comprising one spring rotation device and a sealing device
Figure of figure 14 Operation explanatory diagram of the sealing device with the rotating body attached to the door frame Operation explanatory diagram of sealing device with rotating body attached to door Operation explanatory diagram of sealing device fixed to door frame on sliding surface Operational explanation of sealing device with sliding surface rotating Operation explanatory diagram of sealing device with sliding surface attached to door and rotating

Operation explanatory diagram of sealing device
Drawing of sliding surface shape that is involute Drawing a sliding surface shape that provides a force in a certain direction Operation explanatory diagram of a sealing device that provides a force that changes greatly in direction FIG. 21 is an explanatory diagram of the mechanism.

Operation explanatory diagram of the closing device that connects the door pivot and the sealing device with one link
When the rotating body is attached to the door frame When the rotating body is attached to the door Figure of figure 26 Operation explanatory diagram of closing device sealed with wedge effect Figure of figure 28 Operation explanatory diagram of the closing device provided with the rotating device of the slider crank mechanism

Operation explanatory diagram of closing device with rotating device and sealing device at both ends
Operation explanatory diagram of the closing device consisting of a shaft with wheels at both ends Figure of figure 29 Operation explanatory diagram of link mechanism closing device with wheels at both ends Figure of figure 31 Operation explanatory diagram of a closing device consisting of a rotating body with wheels in the rotating device Figure of figure 34 Operation explanatory diagram of closing device consisting of rotating body with wheels at both ends Figure of figure 35 Operational explanation of sealing device with sliding surface rotating Operational explanation of sealing device with rotating shaft revolving Operation explanatory diagram of a sealing device that also has a rotation function Explanatory drawing of the sealing mechanism of FIG. Operation explanatory diagram of closing device with rotating device and sealing device replaced

Operation explanatory diagram of a spring mechanism that acts only when closed and a spring mechanism that acts only when sealed
Explanatory drawing of the spring acting at the time of closing and the spring acting at the time of sealing Action diagram of the spring acting only when sealed When a link that attaches a wheel to a rotating body is attached When a link with a sliding surface attached to a rotating body is attached When a spring is attached to a rotating body and a wheel is attached to a link When a spring is attached to a rotating body and a sliding surface is attached to a link

Explanation of symbols

A Arm B Wheel C Connection axis D Door G Per contact I Rotation axis or rotation support shaft K Sliding surface O Door rotation axis Q Rotating body rotation axis R Arc S Spring end connection axis T Vertical U Push spring V Pull spring W Metal fittings or plates that attach to the door frame

Claims (3)

The door frame W is provided with a pivot O, the door D is rotatably supported around the pivot O, and the door D is provided with a rotating body rotation axis Q.
A rotating body J is pivotally supported around the rotating body rotation axis Q, and a wheel B is attached to a rotating shaft Ib provided at the tip of the rotating body J. The wheel B is attached to the door frame W. Moves along the sliding surface K provided,
The wheel B presses the sliding surface K so that the “contact point b between the wheel B and the sliding surface K”, the rotating shaft Ib, and the rotating body rotating shaft Q are arranged in a substantially straight line. The opening and closing device characterized in that the force Fb to be applied is substantially tangential to the circular motion of the rotating body rotation axis Q about the pivot axis O. Instead of “the rotating body J on which the wheel B is mounted on the rotating shaft Ib”, “the rotating body whose outer edge is an involute sliding surface” is replaced by “the door frame”. 2. The opening / closing device according to claim 1, wherein the opening / closing device moves along a wheel attached to a rotating shaft provided in W. The action line of the force acting on the “wheel mounted on the rotating shaft provided on the door frame W” by the “sliding surface whose outer edge is an involute shape” is approximately the distance from the rotating body rotating shaft Q. The switchgear according to claim 2, wherein the switchgear is constant.

Images