JP5627638B2 - Sliding door opening and closing device - Google Patents

Description

  The present invention relates to a sliding door opening and closing device.

Conventionally, sliding doors can be opened manually at the entrances and exits of barrier-free toilets and nursing care facilities designed for the physically challenged or disabled, and automatically from the open state when released. Is provided with a sliding door opening and closing device (see Patent Document 1).
The sliding door opening and closing device described in Patent Document 1 hangs the sliding door on a guide rail having a downward slope toward the closing direction, and automatically starts the closing operation as soon as the hand is released from the opened sliding door. Was configured.

JP 2001-82023 A

  However, barrier-free toilets etc. are used by users with handicap such as elderly people, care recipients, parents with infants, pregnant women, infants, or people who need wheelchairs or walker. In many conventional sliding door opening and closing devices, since the closing operation starts automatically as soon as the hand is released from the sliding door, it may be difficult for the user to pass through the doorway. In particular, it is difficult for a user with reduced mobility or a user on a wheelchair to quickly pass through the doorway between the time when the hand is released from the sliding door and the time when the sliding door is closed. It is very inconvenient to move indoors, and there is a possibility that the user or wheelchair may hit the sliding door.

  Therefore, an object of the present invention is to provide a sliding door opening and closing device that holds a sliding door in an open state for a short period of time so that a user with a handicap can pass through the entrance and exit with peace of mind.

The sliding door opening and closing device according to the present invention is a sliding door opening and closing device that automatically closes from the opened state after releasing the sliding door when the sliding door provided at the entrance is manually opened. A ratchet member comprising a plurality of ratchet step portions fixed to the fixed frame of the doorway along the opening / closing direction of the sliding door, and protruding from the sliding door by applying a force in a direction to move the sliding door in the opening direction A locking piece that presses the tip against the ratchet member with a resilient urging force, and gas that repels at a low speed in the direction in which the locking piece is retracted from the time when the force to move the sliding door in the opening direction is removed. When the sliding door has a spring member and moves the sliding door in the opening direction, the locking piece slides over the ratchet member while moving the tip elastically up and down, and moves over the sliding door in the middle of the opening direction. To a half-open state by removing the force to move the sliding door in the opening direction, and then the locking piece is locked to the ratchet member for a short period of time after blocking the movement of the sliding door in the closing direction. The sliding door is held in the half-open state, and after the short time has elapsed, the locking piece is pulled in by the gas spring member to release the locking with the ratchet member, and the sliding door Is configured to automatically close from the half-open state .

In addition, when the sliding door provided at the entrance is manually opened, the sliding door opening / closing device that automatically closes from the opened state after releasing the sliding door in the opening / closing direction of the sliding door A ratchet member composed of a plurality of ratchet steps fixed to the fixed frame of the doorway along, and an elastic biasing force on the ratchet member protruding from the sliding door by applying a force in a direction to move the sliding door in the opening direction And an elastic body made of a low-resilience resin material that slowly draws the locking piece from the point of time when the force to move the sliding door in the opening direction is removed, When the sliding door is moved in the opening direction, the locking piece moves over the ratchet member while moving the tip elastically up and down, and moves the sliding door to an intermediate position in the opening direction to be partially opened. The locking piece and the ratchet member are kept locked for a short time after removing the force to move the sliding door in the opening direction, the sliding door is held in the half-open state, and the short door is After a lapse of seconds, the restoring force of the elastic body causes the locking piece to be pulled in so that the locked state with the ratchet member is released, and the sliding door is automatically closed from the half-opened state. It is characterized by having been comprised .

  According to the sliding door opening and closing device of the present invention, the sliding door can be kept open until the user leaves the sliding door and passes the doorway, and can enter the room safely. In addition, after a few seconds have passed since the hand is released from the sliding door, the sliding door can be released and the automatic closing operation can be started, so the user must not touch the sliding door after entering the room. However, the doorway can be closed reliably.

It is the principal part cross-sectional front view which showed the closed state of the sliding door. It is the principal part cross-sectional front view which showed the open state of the sliding door. It is the principal part enlarged front view which showed the 1st reference example of this invention. It is the principal part enlarged front view which showed the 1st reference example of this invention. It is the principal part enlarged front view which showed the 1st reference example of this invention. It is a principal part enlarged front view which showed the 2nd reference example of this invention. It is a principal part enlarged front view which showed the 3rd reference example of this invention. It is a principal part enlarged front view which showed the 3rd reference example of this invention. It is a principal part enlarged front view which showed the 4th reference example of this invention. It is a principal part enlarged front view which showed the 5th reference example of this invention. It is a principal part expanded side view which showed the 5th reference example of this invention. It is the principal part cross-sectional front view which showed the open state of the sliding door. It is a principal part enlarged front view which showed the 6th reference example of this invention. It is a principal part enlarged front view which showed the 7th reference example of this invention. It is a principal part enlarged front view which showed the 7th reference example of this invention. It is the cross-sectional side view which showed an example of the guide rail hanging structure. It is a sectional side view showing an example of a guide roller support structure. It is a principal part sectional front view showing one embodiment of the present invention. It is a principal part sectional front view showing one embodiment of the present invention. It is a principal part sectional front view showing other embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
The sliding door opening and closing device of the present invention manually opens the sliding door 1 provided at the entrance / exit E to the room of a barrier-free toilet, hospital, nursing facility, school, etc., and automatically releases the hand when released. It is configured to be closed.
The sliding door opening and closing device of the present invention comprises mechanical opening holding means 2 for holding the sliding door 1 in the open state for a short time T even if the hand is released from the sliding door 1 when the sliding door 1 is manually opened. Yes.
The mechanical open holding means 2 is configured to hold the open state for a short time T of 5 seconds to 15 seconds after releasing the hand from the sliding door 1 which is manually opened.
In the present invention, the open state refers to a fully open state in which the sliding door 1 is moved in the opening direction to the full position and the doorway E is almost fully open, or to the extent that a user on a wheelchair can pass through. This includes a semi-open state in which the doorway E is opened halfway by moving 1 to an intermediate position in the opening direction.
The sliding door 1 is suspended by a guide rail 8 fixed to the upper frame (see FIG. 16), and is guided by a guide roller 9 provided on the floor so as to be slidable in the opening and closing direction so that the lower end does not swing. (See FIG. 17). The guide rail 8 provides a moving force F in a direction in which the sliding door 1 closes the entrance E. Specifically, it may be a conventionally used structure such as attaching with a gentle downward slope in the closing direction or pulling in the closing direction with a weight attached to the sliding door 1 via a wire. Handles 7 and 7 are attached to the sliding door 1 so that the user can hold and open the doors by hand. These handles 7 and 7 can be used for healthy persons who are standing or users who are in wheelchairs. It is preferable that a plurality of children and the like are provided at a high position and a low position so that they can be easily operated.

FIGS. 1-5 has shown the 1st reference example of the sliding door opening / closing apparatus of this invention.
The mechanical opening holding means 2 of the first reference example includes a first swinging member 10 pivotably attached to a fixed-side vertical frame, and one end of the first swinging member 10 has a sliding door 1 at one end. A contact member 11 that contacts the side end surface is provided, and a magnet member 12 that can be attracted to the magnetic body 14 provided on the sliding door 1 side is provided at the other end of the first swing member 10.
The contact member 11 is swingably attached to one end of the first swing member 10, and the contact surface portion 11 </ b> A that contacts the side end surface of the sliding door 1 is composed of an elastic body having a cushioning property that reduces impact. Yes. The magnet member 12 has a permanent magnet and is attached to the other end of the first swing member 10 so as to be swingable. The magnetic body 14 is preferably made of a permanent magnet that is attracted to the magnet member 12 or a metal plate material.

The mechanical opening holding means 2 has a gas spring member 3 that repels at low speed.
The gas spring member 3 includes a cylinder body 30 having a piston 31 that reciprocates inside. The gas spring member 3 communicates with the first pressure chamber 30A and the second pressure chamber 30B defined by the piston 31 inside the cylinder body 30 and has a check valve. A bypass part 33 having 32 is provided. The piston 31 has a through-hole-shaped orifice 35 that connects the first pressure chamber 30 </ b> A and the second pressure chamber 30 </ b> B, and integrally connects a telescopic rod 34 from the cylinder body 30. The gas spring member 3 has the tip of the rod 34 connected to a position in the vicinity of the abutting member 11 near one end of the first swinging member 10, and the cylinder body 30 is pivotally attached to the vertical frame so as to be swingable. . The gas spring member 3 may be provided with a return spring that constantly urges and urges the piston 31 in the direction in which the rod 34 extends. The gas spring member 3 preferably includes the bypass portion 33 in the cylinder body 30.

The use method (action) of the above-described sliding door opening and closing device of the present invention will be described.
As shown in FIG. 3, the sliding door 1 is moved fully in the opening direction (by manual operation) to bring the doorway E into a state of being fully opened (fully open state). The sliding door 1 hits the contact member 11, and swings the first swinging member 10 that is in a standby state with the contact member 11 being in a contact waiting state by the urging force of the gas spring member 3. At this time, the rod 34 connected to the first swing member 10 is pushed in the contracting direction, and the piston 31 moves to the first pressure chamber 30A side. The gas spring member 3 opens the check valve 32 of the bypass portion 33, releases the pressure from the first pressure chamber 30A to the second pressure chamber 30B, and moves the piston 31 smoothly with a small force.
Next, as shown in FIG. 4, the first swing member 10 swings when the abutting member 11 is pushed by the sliding door 1, and the magnet member 12 prevents the sliding door 1 from moving in the opening direction. The sliding door 1 is held in the (all) open state by attracting the magnetic body 14 tightly. The gas spring member 3 closes the check valve 32 of the bypass portion 33, stops leakage of pressure from the second pressure chamber 30B to the first pressure chamber 30A, and repels the rod 34 in the extending direction. At this time, since the piston 31 can transfer the pressure from the second pressure chamber 30B to the first pressure chamber 30A little by little through the orifice 35, the piston 31 moves very slowly to the second pressure chamber 30B side. The rod 34 is pushed back in the extending direction at a low speed. The mechanical opening holding means 2 keeps the magnet member 12 and the magnetic body 14 adsorbed over a short time T of 5 seconds to 15 seconds after the user releases the sliding door 1 and the external force is eliminated. Keep (all) open.

  When a short time T of 5 seconds to 15 seconds elapses, the first swinging member 10 swings so that the first swinging member 10 pushes out the contact member 11 by the elastic biasing force of the gas spring member 3 as shown in FIG. The magnet member 12 is pulled away from the magnetic body 14 against the attractive force. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it. After that, the first swinging member 10 stands by in a waiting state with the contact member 11 protruding.

Next, a second reference example of the sliding door opening and closing device of the present invention will be described.
In FIG. 6, the mechanical open holding means 2 has an elastic body 4 made of a low repulsive resin material. Other configurations are substantially the same as those of the first embodiment described above, and thus description thereof is omitted.
The elastic body 4 is made of a synthetic resin made of a polyurethane resin as a raw material, a low-resilience rubber mainly composed of a nitrile rubber, or a silicon-based gel. After applying a compressive force, the elastic body 4 is slowly removed. It has the property of restoring its original shape over time.
That is, the sliding door 1 that has moved in the opening direction hits the contact member 11, and the first swing member 10 swings while compressing the elastic body 4. When the abutting member 11 is pushed by the sliding door 1 and swings, the first swinging member 10 prevents the magnet member 12 from moving in the opening direction of the sliding door 1 and attracts the magnetic body 14 tightly. The sliding door 1 is kept open. Thereafter, even if the user removes his / her hand from the sliding door 1 to remove the external force, the elastic body 4 does not immediately develop a repulsive force and slowly recovers. The mechanical opening holding means 2 keeps the sliding door 1 in an open state by adsorbing the magnet member 12 to the magnetic body 14 for 5 to 15 seconds. Then, after 5 seconds to 15 seconds have elapsed, the restoring force of the elastic body 4 causes the first swinging member 10 to swing so as to push out the contact member 11, and the magnet member 12 opposes the attracting force to cause the magnetic body 14 to move. Pulled away from. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it.

7 and 8 show a third reference example of the sliding door opening and closing device of the present invention.
7 and 8 includes a second swinging member 20 pivotably attached to a vertical frame, and one end of the second swinging member 20 is connected to a side end surface of the sliding door 1. The other end of the second swing member 20 is a locking piece 22 that can be engaged with a locking hole 24 provided on the sliding door 1 side. The contact surface portion 21A of the contact protrusion 21 is made of an elastic body having a cushioning property that reduces impact.

The mechanical opening holding means 2 has a gas spring member 3 that repels at low speed.
The gas spring member 3 includes a cylinder body 30 having a piston 31 that reciprocates inside. The gas spring member 3 communicates with the first pressure chamber 30A and the second pressure chamber 30B inside the cylinder body 30 defined by the piston 31, and also has a check valve. A bypass part 33 having 32 is provided. The piston 31 has a through-hole-shaped orifice 35 that connects the first pressure chamber 30 </ b> A and the second pressure chamber 30 </ b> B, and integrally connects a telescopic rod 34 from the cylinder body 30. The gas spring member 3 has the tip of the rod 34 connected to the second swing member 20, and the cylinder body 30 is pivotally attached to the vertical frame. The gas spring member 3 may be provided with a return spring that constantly urges and urges the piston 31 in the direction in which the rod 34 extends. The gas spring member 3 preferably includes the bypass portion 33 in the cylinder body 30.

In the sliding door opening and closing apparatus of the third reference example described above, the sliding door 1 that has been manually moved in the opening direction hits the abutting protrusion 21 and is caused by the elastic urging of the gas spring member 3 as shown in FIG. The second swinging member 20 that is waiting is placed in a waiting state with the abutting protrusion 21 being swung. At this time, the rod 34 connected to the second swing member 20 is pushed in the contracting direction, and the piston 31 moves to the first pressure chamber 30A side. The gas spring member 3 opens the check valve 32 of the bypass portion 33, releases the pressure from the first pressure chamber 30A to the second pressure chamber 30B, and moves the piston 31 smoothly with a small force.
Next, as shown in FIG. 8, the second swinging member 20 swings when the abutting projection 21 is pushed by the sliding door 1, and the locking piece 22 is engaged with the locking hole 24. The sliding door 1 is kept open. The gas spring member 3 closes the check valve 32 of the bypass portion 33, stops leakage of pressure from the second pressure chamber 30B to the first pressure chamber 30A, and repels the rod 34 in the extending direction. At this time, since the piston 31 can transfer the pressure from the second pressure chamber 30B to the first pressure chamber 30A little by little through the orifice 35, the piston 31 moves very slowly toward the second pressure chamber 30B, and at low speed. The rod 34 is pushed back in the extending direction. The mechanical opening holding means 2 engages the locking piece 22 with the locking hole 24 for a short time T of 5 seconds to 15 seconds after the user releases the sliding door 1 and the external force is eliminated. The sliding door 1 is kept in the open state. Then, although not shown, when 5 seconds to 15 seconds have elapsed, the second swinging member 20 swings so as to push out the abutting protrusion 21 by the elastic biasing force of the gas spring member 3, and the locking piece The part 22 is pulled out from the locking hole 24. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it. The locking piece portion 22 is loosely fitted in the locking hole 24 with a gap g to prevent the second swinging member 20 from being locked.

Next, a fourth reference example of the sliding door opening and closing device of the present invention will be described.
In FIG. 9, the mechanical open holding means 2 has an elastic body 4 made of a low-repulsive resin material. The second rocking member 20 is provided with a compression piece 23 that transmits a compression force to the elastic body 4. Other configurations are substantially the same as those of the above-described third embodiment, and thus description thereof is omitted.
The elastic body 4 is made of a synthetic resin made of a polyurethane resin as a raw material, a low-resilience rubber mainly composed of a nitrile rubber, or a silicon-based gel. After applying a compressive force, the elastic body 4 is slowly removed. It has the property of restoring its original shape over time.
That is, as shown in FIG. 9, the sliding door 1 that has moved in the opening direction hits the contact protrusion 21, and the second swinging member 20 swings while compressing the elastic body 4 by the compression piece 23. By the swinging of the second swinging member 20, the locking piece 22 is engaged with the locking hole 24, and the sliding door 1 is held open. After the elastic body 4 is compressed, even if the user removes the hand from the sliding door 1 to eliminate the external force, the elastic body 4 does not immediately develop a repulsive force and slowly recovers. The mechanical opening holding means 2 keeps the sliding door 1 in an open state by engaging the locking piece 22 with the locking hole 24 for 5 to 15 seconds. When 5 seconds to 15 seconds elapses, the second swinging member 20 swings so as to push out the abutting protrusion 21 by the restoring force of the elastic body 4, and the locking piece 22 is moved from the locking hole 24. Pulled out. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it.

10 and 11 show a fifth reference example of the sliding door opening and closing device of the present invention.
In FIG. 10, a third swinging member 25 pivotably attached to a vertical frame is provided, and one end of the third swinging member 25 is brought into contact with the side end surface of the sliding door 1 which has been manually opened. The contact protrusion 26 and the other end of the third swing member 25 are a locking piece 27 that can be engaged with a locking hole 29 provided on the sliding door 1 side. The third swing member 25 is connected to a wire 28 having a weight suspended outside the figure. The contact surface portion 26A of the contact protrusion 26 is made of an elastic body having a cushioning property that reduces impact.

In FIG. 11, the mechanical release holding means 2 has a one-way clutch mechanism 5 and a frictional resistance member 6.
The one-way clutch mechanism 5 includes an inner ring member 15 that is integrally connected to the third swing member 25, and an outer ring member 16 that is attached to the inner ring member 15 via a ratchet gear. The one-way clutch mechanism 5 is configured such that the inner ring member 15 is rotatable with respect to the outer ring member 16 in one direction A and restricts rotation in the other direction B.
The frictional resistance member 6 is interposed between a frictional disk member 18 that slides on the outer ring member 16 of the one-way clutch mechanism 5 to provide a frictional resistance, and the frictional disk member 18 and a fixed-side vertical frame, and the frictional disk. And a spring member 13 that elastically biases the member 18 in a direction of pressing the member 18 against the outer ring member 16.

As shown in FIG. 10, the sliding door opening / closing apparatus of the fifth reference example described above is configured such that the sliding door 1 that has been manually moved in the opening direction hits the contact protrusion 26 and the contact protrusion due to the tensile force of the wire 28. The third oscillating member 25 that is waiting is oscillated with 26 in a waiting state. At this time, the one-way clutch mechanism 5 smoothly rotates the inner ring member 15 connected to the third swing member 25 in one direction A with a small force. The third swinging member 25 swings when the abutting projection 26 is pushed by the sliding door 1, and the locking piece 27 is engaged with the locking hole 29 to hold the sliding door 1 in an open state. The one-way clutch mechanism 5 restricts the rotation of the inner ring member 15 with respect to the outer ring member 16 in the other direction B, and maintains the engagement state of the engagement piece portion 27 and the engagement hole 29. The third oscillating member 25 is biased in a direction to release the engagement between the engagement piece 27 and the engagement hole 29 by the tensile force of the wire 28, and the outer ring member 16 and the friction disc member of the one-way clutch mechanism 5. 18 makes sliding contact, and the third rocking member 25 rocks slowly over time. Therefore, the mechanical opening holding means 2 engages the locking piece 27 with the locking hole 29 for a short time T of 5 seconds to 15 seconds after the user releases the sliding door 1 and the external force is eliminated. The third swinging member 25 pushes out the abutting protrusion 26 by the tensile force of the wire 28 after a short time T of 5 seconds to 15 seconds elapses. And the locking piece 27 is pulled out from the locking hole 29. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it.

Next, a sixth reference example of the sliding door opening and closing device of the present invention will be described.
The mechanical opening holding means 2 shown in FIGS. 12 and 13 includes a fourth swinging member 40 pivotally attached to the sliding door 1, and can be moved up and down by sliding on the fourth swinging member 40. The member 43 is attached to the sliding door 1. The fourth rocking member 40 includes a contact portion 41 that contacts the vertical frame on the fixed side, and a push-up piece portion 42 that has a cam surface 42A that slides on the insertion pin member 43. The insertion pin member 43 has an insertion portion 43A that can be engaged with a locking hole 44 provided in the guide rail 8 on the fixed side, and an annular outer flange portion 43B.

In FIG. 12 and FIG. 13, the mechanical opening holding means 2 has an elastic body 4 made of a low-resilience resin material.
The elastic body 4 is made of a synthetic resin made of a polyurethane resin as a raw material, a low-resilience rubber mainly composed of a nitrile rubber, or a silicon-based gel. After applying a compressive force, the elastic body 4 is slowly removed. It has the property of restoring its original shape over time. The elastic body 4 is sandwiched between the mounting portion 17 provided along the upper edge of the sliding door 1 and the outer flange portion 43B of the insertion pin member 43. When the insertion pin member 43 rises, the compression force is increased. It is arranged to add.
That is, as shown in FIG. 13, when the sliding door 1 is manually opened, the abutting portion 41 is applied to the vertical frame, and the fourth swinging member 40 is swung, the push-up piece 42 is brought into contact with the cam surface 42A. The insertion pin member 43 is pushed up. The pushed-up insertion pin member 43 compresses the elastic body 4 and engages the insertion portion 43A with the locking hole 44 to hold the sliding door 1 in an open state. After the elastic body 4 is compressed, even if the user removes the hand from the sliding door 1 to eliminate the external force, the elastic body 4 does not immediately develop a repulsive force and slowly recovers. The mechanical opening holding means 2 keeps the sliding door 1 in the open state by engaging the insertion pin member 43 with the locking hole 44 for 5 to 15 seconds. Then, when 5 seconds to 15 seconds have elapsed, the insertion pin member 43 is lowered by the restoring force of the elastic body 4, and the insertion portion 43 </ b> A is pulled out from the locking hole 44. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it.

14 and 15 show a seventh reference example of the sliding door opening and closing device of the present invention.
14 and 15, the mechanical opening holding means 2 includes a fifth swing member 45 pivotally attached to the sliding door 1. The fifth swing member 45 includes a contact portion 46 that abuts on the fixed-side vertical frame, and a hook-shaped hook portion 47 that can be engaged with a locking hole 49 provided in the vertical frame.

In FIG. 14 and FIG. 15, the mechanical opening holding means 2 has an elastic body 4 made of a low-resilience resin material.
The elastic body 4 is made of a synthetic resin made of a polyurethane resin as a raw material, a low-resilience rubber mainly composed of a nitrile rubber, or a silicon-based gel. After applying a compressive force, the elastic body 4 is slowly removed. It has the property of restoring its original shape over time. The elastic body 4 is sandwiched between the mounting portion 19 provided along the side edge of the sliding door 1 and the fifth swing member 45, and when the fifth swing member 45 swings, the compression force It is arranged to take.
That is, as shown in FIG. 14, the sliding door 1 is manually opened to apply the contact portion 46 to the vertical frame, and the second swing member 20 is swung. At this time, the fifth swing member 45 swings while compressing the elastic body 4, and the hook portion 47 is inserted into the locking hole 49.
As shown in FIG. 15, the fifth swinging member 45 engages the hooking portion 47 with the locking hole 49 and holds the sliding door 1 in the open state. Even if the user removes his / her hand from the sliding door 1 to remove the external force, the elastic body 4 does not immediately develop a repulsive force and slowly recovers. The mechanical opening holding means 2 keeps the sliding door 1 in the open state by engaging the hook portion 47 with the locking hole 49 for 5 to 15 seconds. Then, when 5 seconds to 15 seconds have elapsed, the fifth swinging member 45 swings due to the restoring force of the elastic body 4, and the hook portion 47 is pulled out from the locking hole 49. Thus, the mechanical opening holding means 2 cancels the open state of the sliding door 1 and automatically closes it.
Note that the hook portion 47 is loosely fitted into the locking hole 49 with a gap g to prevent the fifth swing member 45 from being locked.

18 and 19 show an embodiment of a sliding door opening and closing device of the present invention.
In FIG. 18 and FIG. 19, the mechanical opening holding means 2 has a ratchet member 51 on the fixed side, and a locking piece 52 that is detachable from the ratchet member 51, and the sliding door 1 is in the middle in the opening direction. It is configured to hold in the (semi) open state at the position for only a short time T.
The ratchet member 51 is fixed to the fixed frame along the opening direction of the sliding door 1, and includes a plurality of ratchet steps 53 having a locking wall portion 53A on one end surface and an inclined wall portion 53B on the other end surface. .
The locking piece 52 is attached such that its tip 52A can protrude and retract from the upper end wall 1A of the sliding door 1.
When the sliding door 1 is manually moved to an intermediate position in the opening direction to be in a half-open state or a full-open state, the locking piece 52 remains on the ratchet member 51 (ratchet step portion 53) even if the hand is released from the sliding door 1. The sliding door 1 is configured to hold the sliding door 1 in a half-open state or a fully open state at an intermediate position for a short time T.

The locking piece 52 is held by a movable housing 54 attached to the sliding door 1 side so as to be movable up and down. The locking piece 52 is always elastically biased upward by a resilient member 56 provided in the movable casing 54. When the tip 52A is pushed down by an external force from above, the resilient member 56 It is configured to be able to escape downward against a bullet energizing force.
The movable casing 54 is held by a frame member 59 fixed to the sliding door 1 so as to be vertically slidable, and is lifted by being pressed by the lifting member 58 from below. The lifting member 58 is connected to the push-pull wire 55.
The sliding door 1 is provided with a movable handle 57 that can be slid in the left-right direction by a user to hold it by hand, and the push-pull wire 55 connects the movable handle 57 and the lifting member 58 to each other. Yes. When the movable handle 57 is operated in the direction in which the sliding door 1 is moved in the opening direction (the movable casing 54 is raised), the locking piece 52 protrudes above the sliding door 1, and the ratchet member 51 has the tip of the locking piece 52. It is comprised so that 52A may be pressed.

18 and 19, the sliding door opening and closing device of the present invention has an elastic body 4 made of a low-resilience resin material.
The elastic body 4 is bonded to the upper surface of the movable casing 54 and the upper end wall 1 </ b> A of the sliding door 1. In other words, it can be said that the movable casing 54 is suspended from above. Note that the locking piece 52 passes through the elastic body 4 and the upper end wall 1 </ b> A of the sliding door 1. The elastic body 4 is the same as that already described, and is compressed and elastically deformed by the rising of the movable casing 54 (see FIG. 18). After removing the compression force, slowly take the original over time. It has the property of restoring its shape (see FIG. 19).

In the above-described sliding door opening and closing apparatus of the present invention, as shown in FIG. 18, the movable handle 57 is manually operated to move the sliding door 1 to the intermediate position in the opening direction, and the user on the wheelchair passes. The doorway E is opened to the middle as much as possible (semi-open state), or the sliding door 1 is moved fully in the opening direction to make the doorway E fully open (full open state). At this time, as the movable handle 57 slides, the movable casing 54 rises, and the locking piece 52 is pressed against the ratchet member 51 with an elastic biasing force while compressing the elastic body 4. The locking piece 52 moves over the ratchet step 53 while moving the tip 52A elastically up and down while slidingly contacting the inclined wall portion 53B of the ratchet step 53, and enables the sliding door 1 to move in the opening direction.
Next, as shown in FIG. 19, the hand is released from the movable handle 57, and the movement of the sliding door 1 is stopped at an intermediate position in the opening direction. At this time, the movable housing 54 is in a state where the pressing force by the lifting member 58 is eliminated and is suspended from the elastic body 4, and the locking piece 52 is locked to the locking wall portion 53 </ b> A of the ratchet step portion 53. Thus, the sliding door 1 is prevented from moving in the closing direction. Then, after the user removes his / her hand from the movable handle 57 of the sliding door 1 and the compression force of the elastic body 4 is removed, the locking piece 52 and the ratchet member 51 are locked for a short time T of 5 seconds to 15 seconds. The state is maintained, and the sliding door 1 is kept in the half-open state or the fully-open state in the intermediate position.

  When a short time T of 5 seconds to 15 seconds elapses, the movable casing 54 is lowered by the restoring force of the elastic body 4 and the locking piece 52 is pulled into the upper end wall 1 </ b> A of the sliding door 1. Thus, the mechanical opening holding means 2 automatically closes the sliding door 1 from the opened state.

FIG. 20 shows another embodiment of the sliding door opening and closing device of the present invention.
In FIG. 20, the mechanical opening holding means 2 has a ratchet member 51 and a locking piece 52 that can be engaged with and disengaged from the ratchet member 51. Although it is the same as that of the above-mentioned 8th Embodiment by the point comprised so that only T may be hold | maintained, it is different by the point which has the gas spring member 3 which reacts at low speed.
The gas spring member 3 is the same as that already described. When the movable handle 57 is operated in the direction in which the sliding door 1 is moved in the opening direction (the movable casing 54 is raised), the locking piece 52 protrudes above the sliding door 1, and the ratchet member 51 has the tip of the locking piece 52. After 52A is pressed and the hand is released from the movable handle 57, the movable handle 57 is slowly pushed back over a short time, and after a short time T of 5 seconds to 15 seconds has elapsed, the locking piece 52 is retracted. Has been.
In FIG. 20, a rollable roller 60 is attached to the tip 52 </ b> A of the locking piece 52. When the roller 60 gets over the ratchet step portion 53 due to the movement of the sliding door 1 in the opening direction, the roller 60 rolls to the inclined wall portion 53B to enable smooth movement.

The present invention is not limited to the implementation described above, as long as it does not change the gist of the invention, it is possible to design changes.

  As described above, the sliding door opening / closing apparatus according to the present invention is a sliding door opening / closing apparatus that manually opens the sliding door 1 provided at the entrance / exit E and automatically closes when the hand is released. Thus, when the sliding door 1 is manually opened, the sliding door 1 is provided with the mechanical opening holding means 2 that holds the sliding door 1 in the open state for a short time T even if the hand is released from the sliding door 1. The sliding door 1 can be held in an open state until it is released from the door and passes through the doorway E, so that it can enter the room safely. In addition, after T has been released for a short period of time after releasing the sliding door 1, the sliding door 1 can be released from being held open and the closing operation can be automatically started. The doorway E can be reliably closed without touching.

  Further, the mechanical opening holding means 2 is configured to hold the open state for only a short time T of 5 seconds to 15 seconds after releasing the hand from the sliding door 1 which is manually opened. Users with reduced mobility and users in wheelchairs can enter the room with peace of mind.

  Further, since the mechanical opening holding means 2 has the gas spring member 3 that repels at a low speed, the closing operation does not start as soon as the user releases the sliding door 1 and the opening state can be reliably held. In addition, when the electrical open holding means is used, the function may stop due to a power failure or battery exhaustion, but the mechanical open holding means 2 maintains the open state safely and securely without worrying about that. it can.

  Further, since the mechanical opening holding means 2 has the elastic body 4 made of a low repulsive resin material, the closing operation does not start as soon as the user releases the sliding door 1, and the opening state can be reliably held. . In addition, when the electrical open holding means is used, the function may stop due to a power failure or battery exhaustion, but the mechanical open holding means 2 maintains the open state safely and securely without worrying about that. it can.

  Further, since the mechanical opening holding means 2 includes the one-way clutch mechanism 5 and the friction resistance member 6, the closing operation does not start as soon as the user releases the sliding door 1, and the opening state can be reliably held. In addition, when the electrical open holding means is used, the function may stop due to a power failure or battery exhaustion, but the mechanical open holding means 2 maintains the open state safely and securely without worrying about that. it can.

  Further, the mechanical opening holding means 2 includes a fixed-side ratchet member 51 and a locking piece 52 that can be freely engaged with and disengaged from the ratchet member 51, and the sliding door 1 is short in an open state at an intermediate position in the opening direction. Because it is configured to hold only T for a second, even if it is difficult for a user with a handicap, such as a person who needs a wheelchair or a walker, Even if the sliding door 1 is moved to an intermediate position in the opening direction so that the user can pass through and the doorway E is opened halfway (a half-open state), the user can move the doorway E. Until it passes, the sliding door 1 can be held in a semi-open state at an intermediate position in the opening direction and can enter the room safely.

DESCRIPTION OF SYMBOLS 1 Sliding door 2 Mechanical opening holding means 3 Gas spring member 4 Elastic body 5 One-way clutch mechanism 6 Friction resistance member 51 Ratchet member 52 Locking piece
52A Tip E Entrance T Short seconds

Claims (2)

When the sliding door (1) provided at the doorway (E) is manually opened , the sliding door opening and closing device automatically closes from the opened state after releasing the sliding door (1). ,
A ratchet member (51) composed of a plurality of ratchet steps (53) fixed to a fixed frame of the doorway (E) along the opening / closing direction of the sliding door (1), and the sliding door (1) moved in the opening direction A locking piece (52) that protrudes from the sliding door (1) by applying a force in a direction to be pushed and presses the tip (52A) with a resilient biasing force against the ratchet member (51), and the sliding door ( 1) having a gas spring member (3) that repels at a low speed in the direction of retracting the locking piece (52) from the time when the force to move the opening in the opening direction is removed;
When the sliding door (1) is moved in the opening direction, the locking piece (52) slides over the ratchet member (51) while moving the tip (52A) elastically up and down, and moves over the sliding door. (1) is moved to an intermediate position in the opening direction to be in a semi-open state, and after removing the force to move the sliding door (1) in the opening direction, the locking piece (52) is moved over the short time (T). Locking the ratchet member (51) to prevent the sliding door (1) from moving in the closing direction, holding the sliding door (1) in the half-open state, and the short seconds (T) have elapsed. Later, the locking piece (52) is pulled by the gas spring member (3) to release the locking with the ratchet member (51), and the sliding door (1) is automatically released from the half-open state. sliding door opening and closing, characterized in that it is configured to the closing operation Location. When the sliding door (1) provided at the doorway (E) is manually opened, the sliding door opening and closing device automatically closes from the opened state after releasing the sliding door (1). ,
A ratchet member (51) composed of a plurality of ratchet steps (53) fixed to a fixed frame of the doorway (E) along the opening / closing direction of the sliding door (1), and the sliding door (1) moved in the opening direction A locking piece (52) that protrudes from the sliding door (1) by applying a force in a direction to be pushed and presses the tip (52A) with a resilient biasing force against the ratchet member (51), and the sliding door ( 1) having an elastic body (4) made of a low-resilience resin material that slowly draws the locking piece (52) from the time point when the force to move the opening in the opening direction is removed;
When the sliding door (1) is moved in the opening direction, the locking piece (52) slides over the ratchet member (51) while moving the tip (52A) elastically up and down, and moves over the sliding door. (1) is moved to an intermediate position in the opening direction to be in a half-open state, and after removing the force to move the sliding door (1) in the opening direction, the locking piece (52) and the above-mentioned After the latching state of the ratchet member (51) is maintained, the sliding door (1) is held in the half-open state, and after the short time (T) has elapsed, the restoring force of the elastic body (4) The locking piece (52) is retracted to release the locking state with the ratchet member (51), and the sliding door (1) is configured to automatically close from the half-open state. A sliding door opening and closing device.

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