JPS591877B2 - door tightening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door opening/closing device for purposes such as tide protection, airtightness, soundproofing, and heat insulation.

In a door intended for complete sealing, the tight side of the door and the center of the hinge are actually offset considerably.

Therefore, when opening and closing the door, the gasket may be damaged by slipping components between the door and the gasket.

In particular, on tight surfaces near the hinge, the sliding component is relatively larger than the displacement component that causes the door and the seal to approach or separate, so the seal is seriously damaged.

This will be explained using a diagram.

FIG. 1 is a plan view of the door.

Reference numeral 1 denotes a hinge fixed to a frame 2, and a hinge pin 4 commonly passes through a hole in a bracket 5 fixed to a door 3.

These hinges 1 and brackets 5 are provided above and below the door 3.

The hinge pins 4 may be common, or may be provided above and below, respectively.

6 and 6' are gaskets held on the frame 2.

The door 3 pivots around a hinge pin 4.

Now let's think about the average center point P where Patsukin 6 and door 3 touch.

Assuming that the center of the hinge pin 4 is C, the point P rotates with a radius R between C2.

If the angular velocity of the door when it turns is ω, then point P moves at a speed of ■=2πRω in a direction perpendicular to the straight line connecting CP.

These are the tight surface, the parallel component Vx, and the perpendicular component vy.
It can be divided into

Each of these is a linear displacement component when viewed over a minute constant time.

Let θ be the angle formed by the velocity V and Vx. However, the E-offset amount X is the distance from the vertical foot B lowered from point C to the tight surface to point P, that is, the distance to the tight position.

Therefore, the smaller the offset amount E or the longer the distance X to the tight position, the larger Vy/VX becomes.

That is, the ratio of the component that prevents the gasket 6 from separating from the door 3 and the sliding component is larger, and the gasket is not rubbed.

Therefore, it is sufficient to reduce the offset amount E, but
In practice, this is difficult due to the structure of the body.

Furthermore, if the distance X to the tight position is increased, a large bending moment I will be applied to the bracket 5, causing difficulties in the structure.

Furthermore, the distance between the tip of the door 3 and the hinge pin 4 is unnecessarily extended.

As is clear from the diagram, the gasket 6' is further away from the hinge pin 4.
Since X is a dog, Vy/Vx has a large value, so the influence of the slip component on the seal in that part can be ignored.

This invention prevents damage to the gasket by moving the door toward the gasket in a direction perpendicular to the surface of the door when the door closes and comes into contact with the gasket when the door opens and closes around the hinge. The purpose is to improve performance.

In this invention, the door is rotated around a fixed center between the fully open position and the fully closed position, and the door is moved from the closed position toward the seal in a direction perpendicular to the plate surface. .

The configuration is such that a fixed pivot is fixed to the door and engages a guide for the door's orthogonal movement, and a clamp that is latched to the door and moves with the door in an absolute position engages the output end of the device to the pivot. The door is pivoted at one point by the guide and the output end, and the door is rotated, and after the door is pivoted and closed, the output end is moved to guide the door with the guide, and the device is used to tighten the door at the support point. Tightening is performed by moving the

Embodiments of the present invention will be described below with reference to the drawings. 1. FIGS. 2 to 4 are plan views.

Reference numeral 11 denotes a frame, and an opening 12 is provided between both sides.

For example, gaskets 13 are attached to the opening 12 on both sides of the opening 12 in the case of a weir, and on both sides and the upper and lower sides, that is, around the periphery, in the case of a lower soundproof door.

In some cases, a gasket 13 is attached to the door 16.

Hinges 14 are fixed to the main body 11 at upper and lower positions of the door 16, and pivot shafts 15 of the main body are fixed to holes at the tips of the two hinges 14.

There are two hinges 14 at the top and bottom of the door 16.

A bracket 18 having a guide groove 17 in contact with the hinge 14 and perpendicular to the door 16 is fixed to the door 6.

A pivot 15 is held in the guide groove 11 so as to be movable along the guide groove 17.

A cam 20 having a cam groove 19 is held on the door 16 between the upper and lower hinges 14 and the bracket 18.

The cam 20 is held close to the door 16 at one end of the cam groove 19, and at a distance from the door 16 at the other end.

That is, the cam 20 is locked on the door 16 and moves with the door 16 as an absolute position, and has a cam groove in which the distance between the position on the cam groove 19 and the door 16 changes, and has a movement form between this distance. It is composed of

In FIG. 2, this is shown as a linear cam, and a rod 21 parallel to the door 16 rigidly fixed to the cam 20 is slidably supported while being guided by a support 22 fixed to the door 16.

A driving source is connected to the end of the rod 21.

In the figure, a piston of a cylinder 23 in which pressure fluid operates is connected.

It goes without saying that the shape of the cam groove 19 and its movement form are not limited to this (other shapes and movement forms will be shown later).

Guide groove 1 of bracket 18 when door 16 is open
A pivot 15 is inserted through a position defined by the end of the cam groove 19 closer to the door 16 and the end of the cam groove 19, and is positioned at a fixed point.

Therefore, the moment generated by the gravity of the door in the direction parallel to the plate surface of the door 16 and the direction perpendicular to it is supported.

In this state, when the door 16 is turned toward the closed position, the door 16 turns around the fixed point.

FIG. 3 shows the state in which the door 16 and the gasket 13 are in contact with each other after turning.

In the state shown in Fig. 3, when pressure fluid is introduced to the left side of the cylinder 23 in Fig. 3, the piston moves to the right, the rod 21 slides in the support 22 and moves to the right, and the cam 20 moves to the right. .

Since the cam groove 19 is guided by the pivot 15 to move in the direction of the door 16, the door 16 also moves together, and during the movement, the door 16 is guided into the guide groove 17 of the bracket 18.

Therefore, the gasket 13 is pressed against the door 16 from the right angle direction.

This is shown in FIG. Although not shown in the drawings, the gasket 13 on the front end side of the door 16 is pressed by a known tightening mechanism.

When the door 16 is opened, pressure fluid is first introduced into the right chamber of the cylinder 23.

The piston moves to the left in FIG. 4, and the rod 21 moves to the left.

As the rod 21 moves leftward, the engagement between the cam groove 19 and the pivot shaft 15 causes the door 16 to gradually approach the pivot shaft 15 while being guided to the guide groove 17 of the bracket 18, and the end of the cam groove 19 and the bracket at the left end of the piston. The position defined by the end of the guide groove 18 determines the position relative to the pivot 15, and the door 16 only comes into contact with the gasket 13.

That is, it becomes as shown in FIG.

When the door 16 pivots and opens from this position, it pivots around the pivot 15, as shown in FIG.

In FIG. 5, the guide groove 17 and the cam groove 19 are orthogonal to each other, and the rod 21 is inclined instead of the cam groove, and the reference numerals in the figure are the same as those used in the description of the previous embodiment. It has a similar effect.

The inclination of the cam groove 19 in the first embodiment described above is in the opposite direction to the door (downward to the left in FIG. 3).

) (in this case, the direction of movement of the cam groove 19 is opposite to that of the first device).

FIG. 6 is a plan view of another embodiment in which the door is moved by rotating the cam groove.

A cam 24 having a cam groove 29 is rigidly fixed to a shaft 25 which is pivotally connected to a bracket (not shown) fixed to the door 16. A segment worm wheel 26 is fixed to the shaft 25. a bearing 27 that carries radial and thrust loads fixed to the door 16;
The worm 30 supported on the shaft 28 engages with the worm 3
The shaft end of 0 is connected to a rotary motor 31 fixed to the door 16.

The cam groove 29 engages with the pivot shaft 15 at one end in FIG. 6, and the distance between the shaft 25 and the position shown is the closest, and the distance between the other end of the cam groove 29 and the shaft 25 is the farthest.

The cam groove 29 and the guide groove 1T configured in this way allow the door 16 to pivot in the position shown in FIG.

To tighten the door 16 in the state shown in FIG. 6, the rotary motor 31 is energized.

The worm 30 rotates and the interlocking segment worm wheel 26 pivots clockwise, thus pivoting clockwise through the shaft 25 onto the cam 24 and towards the other end of the cam groove 29 the engagement with the pivot shaft 15 changes. The door 1 is guided by the guide groove 17.
6 moves toward Patsukin 13.

Loosen the tightening. reversely energizes the rotary prime mover 31.

Next, still other embodiments to which this invention is applied will be described.

FIG. 7 is a front view of the door, and FIG. 8 is a side view.

The door 36 is pivotally attached by a hinge 37.

A drive device 41 is fixed to the door 36. 40 is its operating bundle foil.

1 drive device 41 is a rod 42 that can reduce the 400 rotations of the band wheel through a gear train and cut a male thread attached to the case so as to allow only axial movement to rotate and engage the nut.
is configured to be moved vertically by a drive device 41.

The drive device 41 can also be replaced by one in which the rod 42 is moved by hydraulic pressure.

A booster 43 is engaged with the end of the rod 42.

That is, a metal fitting 46 is fixed to the end of the rod 42, and a link 47 is symmetrically pivoted to the metal fitting 46.

48 is a stopper fixed to the door 36 that restricts the metal fitting 46 from going too far.

The other end of the link 47 on the hinge side is pivotally connected to a rod 49 of the tightening device 44, and the other end of the link 47 on the tip side of the door 36 is pivotally connected to one end of the rod 50 of the tightening device 45. .

Rods 49 and 50, as will be shown later, are supported for horizontal movement.

FIG. 7 shows a state in which the door is closed and tightened.

When the band wheel 40 is rotated in the position shown in FIG. 7, the rod 42 moves vertically upward via the drive device 41, the metal fitting 46 also rises accordingly, and the pivoted link 47
is at the position indicated by the two-dot chain line in FIG. 7, and the rods 49 and 50 pivot in the direction of the rod 42 so as to approach each other.

Figure 9 is an enlarged view of the tightening mechanism in Figure 7, and Figure 10 is an enlarged view of the tightening mechanism in Figure 7.
The A-A sectional view in the figure, Figures 11 and 12 are B in Figure 7.
-B is a partially omitted and enlarged view shown in arrow view.

In the frame 51 of the structure, the front face of the door 36 is opened, and the base portion of the hinge 37 is fixed to one side via a metal fitting 54 embedded in an i-rut 53.

A pivot 55 is fitted into the hole of the hinge 31.

The shaft 55 has its head and a washer 56 fitted into the other end.
1 is fitted into the groove of the pivot shaft 55 and locked, thereby preventing movement in the axial direction.

A bracket 58 is fixed to the door 36 with bolts 59.

A guide hole 60 is formed in the bracket 58 in parallel with the door 36, a bush 61 is press-fitted into the guide hole 60, and a rod 49 is slidably fitted into the hole.

The bracket 58 is also provided with an elongated guide groove 62 perpendicular to the door 36 at the end of the horizontally parallel member 58A that stands upright on the door 36, and a bush 63 into which the pivot 55 slides is provided in the guide groove 62. It is fitted into the guide groove 62 so as to be movable only in the longitudinal direction.

The member 58A of the bracket 58 is tightly fitted into the inner surface of the pair of upright members relative to the base of the hinge 3T via the thrust collar 64.

A cam 65 is integrally formed at the end of the rod 49.

The cam 65 is a direct-acting cam with a cam groove 66 cut into it, into which the pivot shaft 55 is fitted via a bush 67.

The bushing 67 is slid into the pivot 55.

The surface of the cam 65 on the door 36 side is finished parallel to the plate surface of the door 36.

The surface of the cam 65 abuts an anti-friction liner 68 secured to the bracket 58.

The end of the cam 65 is an arc whose radius is the distance from the center of the cam groove 66 to the liner 68.

(FIG. 11) A stopper 69 is provided between the hinge 37 and the bracket 58.

The stopper 69 is fixed to either the hinge 37 or the bracket 58.

In this embodiment, it is fixed to the base portion of the bracket 58.

The end face of the stopper 69 and the face of the abutting hinge 37 are parallel to a line passing inward and outward through the opening of the frame body 51 at right angles.

That is, the direction is perpendicular to the closing surface of the packing 38.

The end of the cam groove 66 has a door 36 in the direction away from the door 36.
An relief groove 66A is formed perpendicularly to the plate surface.

The relief groove 66A is large enough to allow the bracket 67 to enter therein.

A bracket 81 is fixed to the side opposite to the hinge side of the frame 51, and a pin 82b is fixed across the two prongs of the bracket 81.

A bushing 83 has debris in the pin 82.

The end of the upper generatrix of the cone at the tip of the rod 50 is located in the tangential direction of the lower outer diameter of the bush 83 in FIG.

The rod 50 is inserted into a bushing 85 that is press-fitted into a bracket 84 that is fixed to the door 36.

FIG. 11 shows a state in which the door 36 is closed and not tightened.

In the illustrated position, the door 36 is positioned relative to the pivot shaft 55 by the respective ends of the guide groove 62 and the cam groove 66, and the door 36 can be freely pivoted to open and close around the pivot shaft 55 via the bushes 63 and 67. It is possible.

The door 36 is tightened as follows.

In FIG. 11, the door 36 is very close to the seal 38.

Now, when the drive device 41 is driven by rotating the wheel 40, the link 47 moves from the position indicated by the chain double-dashed line to the position indicated by the solid line in FIG. 7, and the rods 49 and 50 move away equally.

That is, in FIG. 11, the rod 49 moves to the right, and the rod 50 moves to the right.
moves to the left.

When the rod 49 moves to the right, the rod 49 is guided by the bush 61, and the cam 65 moves in contact with the liner 68.

As the rod 49 moves, the cam groove 66 presses the pivot shaft 55 through the bush 67 and moves to the right.

As the cam groove 66 moves, the cam 65 moves the bracket 58 downward in FIG. 11 via the liner 68, rod 49, and bush 61.

The most tightened state is shown in FIG.

When the rod 50 moves to the left, the rod 50 slides inside the bushing 85, and the conical generatrix of its conical end contacts the bushing 83 and is pressed by the pin 82 through the bushing 83, so that the rod 50 slides through the bushing 85 and the bracket 84. door 36
is moved downward in FIG.

Therefore, if the outer diameters of the bushings 67 and 83 are the same, the shape of the cam groove 66 is horizontal until the cone at the end of the rod 50 and the bushing 83 touch, and the part corresponding to the length of the conical generatrix has the same slope in the opposite direction. The door 36 is moved in parallel by forming the cylindrical portion of the rod 50 horizontally again.

That is, the gasket 38 is uniformly pressed.

To release the tightening, conversely to the above, the rod 42 is urged upward by the drive device 41, and the rods 49 and 50 approach each other, each operating in the opposite manner to the above, and the door 36 is moved against the gasket 38.
Move further in parallel and move away.

When the door 36 is closed and tightened, when pressure from the blocked fluid is applied to the door 36 from the side where the device is, the gasket 38 is further pressed against the door 36 and compressed. Ru.

At this time, interference of the bushing 6γ is reduced by the clearance groove 66A.

FIGS. 13 and 14 show other embodiments, in which the pivot 91
has a parallelogram cross section in the middle and a cylinder at both ends.

A bush 92 having an outer diameter longer than the length of the thicker diagonal of the parallelogram is fitted into the cylindrical portion, and its flange portion is fixed to the hinge 137 with bolts 93.

The hinge 137 has a hole into which the bushing 92 is inserted, and a female thread into which the bolt 93 engages is cut.

The bushing 94 is press-fitted into the hinge 137 on the opposite side of the pivot shaft 91 into which the bushing 92 is inserted.
1 is sliding in.

Hinge 137 is the same as hinge 37 except for the above.

Corners of the parallelogram of the pivot shaft 91 are directly fitted into the cam groove 166 and the guide groove 162, respectively.

The cam groove 166 has the same inclination as the cam groove 66 of the previous embodiment, but does not have a portion parallel to the door 36 at the end.

A rectangular escape groove 166A is provided.

Other than the above, the pivot 91 has grooves for regular knitting at both ends, and after inserting the washer 56, the shaft layer regular knitting 5 is similar to the above embodiment.
7 prevents the axial movement.

According to the embodiment of the present invention configured in this manner, the door 36
When opening and closing, the door 36 is positioned with respect to the pivot 91 by the guide groove 162 and the cam groove 166, and the pivot 91 rotates in the bushes 92 and 94.

When tightening the door 36, the guide groove 162 and the cam groove 16
6 and the corner of the pivot 91 slide and move.

As described above, according to this invention, the packing will not be rubbed or damaged.

In addition, force is applied to the packing surface in the normal direction, so it has good tightness.

There is only rotational movement when opening and closing, and strong force is generated only when tightening.

As for tightening, the seal around the door is tightened uniformly by the combination of the device and the hinge, so there is a synergistic effect in terms of tightness performance.

The gently sloped cam groove has a locking effect and resists pressure from either side of the door.

Since the cam is located between the hinges, it is compact, and if the cam groove is oriented in the direction of this embodiment (see Figure 11), the end of the cam will not interfere with other parts when the door turns, and it will be more compact. It fits within the space of the hinge.

Since it is unitized, installation is easy.

The direction of motion of the rod 49 is parallel to the door, and the end of the door opposite to the hinge can be tightened in conjunction with the device to move the door in parallel and tighten the seal.

Since the hinge 37 has a normal shape, the existing door can be easily modified.

There are advantages such as high strength since the door is pressed through the liner 68.

[Brief explanation of drawings]

FIG. 1 is a plan view for explaining a conventional hinge, FIGS. 2 to 4 are plan views of an embodiment of the present invention, and FIGS. 5 and 6 are plan views showing other embodiments of the present invention, respectively. Figures 7 and below show still other embodiments of the apparatus of the present invention, in which Figure 7 is a front view, Figure 8 is a side view, Figure 9 is an enlarged plan view of the apparatus for tightening, and Figure 10 is an enlarged plan view of the apparatus. The figures are a sectional view taken along the line A-A in FIG. 9, FIGS. 11 and 12 are enlarged views taken along the line B-B in FIG. Figure 14 shows C- in Figure 13.
It is a sectional view of C. 11... Body L12... Opening, 13...
...Patsukin, 14...Hinge, 15...
... Pivot, 16 ... Door 17 ... Guide groove, 19 ... Cam groove, 29 ... Cam groove, 36 ...・Door, 37... Hinge, 3
8... Packing, 44... Tightening device, 49... Rod, 51... Body, 5
5... Pivot, 58... Bracket, 6
1... Bush, 62... Guide groove, 6
3...Button, 64...Thrust collar, 65...Cam 66...Cam groove,
66A... Relief groove, 67... Bush, 68... Liner, 91... Pivot,
162...Guide groove, 166...Cam groove, 166A...Escape groove.

Claims (1)

[Claims] 1 A pair of upright members of the bracket fixed to the door are carved with a guide groove in a direction perpendicular to the door, a cam with a cam groove that intersects the guide groove is placed, and a pivot point is placed at the intersection of the guide groove and the cam groove. is inserted directly or through a bushing together with the hinge supporting the door and fixed to the hinge, the cam groove being a parallel groove closest to the door at one end and furthest away from the door at the other end,
The cam has a rod at one end parallel to the door, the rod is slidably supported by a bracket fixed to the door, and the other end is an arc whose center is the center of the cam groove end and whose radius is the distance from the cam groove end to the liner surface. The surface of the cam facing the door is a plane parallel to the door, and is supported in contact with a liner fixed to the door, and the door is tightened and released by moving a rod. Attached is the device.