JPH0538251U - Door bounce prevention device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The present invention relates to a device for preventing recoil when a top-sliding door is opened. [Structure] A bracket 2 provided with a braking body 3 is attached to an open end side of a rail C capable of hanging a door roller B to open and close the door A, and a belt-shaped flat surface formed on the braking body is attached to the rail. It is arranged to face the upper position and is arranged so that it can move in and out of the running path of the door roller, and is further urged by an elastic body so that the flat surface of the braking member is always in contact with the door roller to form a longitudinal braking area. It is a thing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing the upward sliding door door from bouncing back.

[0002]

[Prior Art]

 This upper sliding door does not have rails or thresholds on the floor surface and can form a flat floor surface.Therefore, it is possible to carry luggage for business offices, warehouses, hospitals, social welfare facilities, etc. Wheelchairs, etc. are able to pass smoothly, and in recent years it is being widely used in multiple directions. Conventionally, this top-sliding door door can open and close the door A by freely suspending the door roller B of the door A on the rail C of the ceiling, but the rail C is attached to the door in a downward slope. Thus, the opened door A is automatically closed. For this reason, a stop device D is installed at the door-side door contact portion so that the door A does not run unintentionally in the open position. As shown in FIG. 5, this stopping device D has one end of an elastic plate F fixed to the upper part of a bracket E, has its tip G directed toward the door closing direction, and has its middle part lowered downward so as to bite into the traveling path of the door roller B. A curved arcuate stopper portion H is formed at the same time, and the tip G is extended obliquely upward so as to escape from the traveling path. With this construction, when the door A is opened, the door roller B pushes up against the elasticity of the arcuate stopper portion H of the elastic plate F, climbs over this, and stops the door roller B at the arcuate stopper portion H. It has become.

[0003]

[Problems to be solved by the device]

 However, in the above-described conventional stop device, when the elastic force of the elastic plate F is set so that the door roller B is locked to the arcuate stopper portion H by the force of opening the door A by an ordinary person, the disabled person will be disabled. For a weak person such as a girl, a child, or a wheelchair operator, the door roller B cannot be locked to the arcuate stopper portion H, the door A goes backward due to the inclination of the rail C, and is caught by the door A, causing an accident. There is a risk of getting up. If the elastic force of the elastic plate F is weakened in order to prevent this, when a general person vigorously opens the door A, after the door A collides with the door-stop portion, it recedes due to its reaction and does not damp. There was a possibility that the arcuate stopper portion H was pushed up and bounced back toward the door. In view of the above-mentioned conventional problems, the present invention has been made to solve the problem, and it is possible to always stop the door at the open position regardless of the strength of the door opening operation. It is to obtain a device that can reliably prevent the return and can easily perform the door closing operation.

[0004]

[Means for Solving the Problems]

 As a means for achieving this, the present invention attaches a bracket equipped with a braking body to the open end side of a rail that can hang a door roller to open and close the door, and forms a strip-shaped member formed on the braking body. The flat surface faces the upper position of the rail and is arranged so as to be able to move in and out of the running path of the door roller. Further, the flat surface of the braking body is always in contact with the door roller to form a longitudinal braking area. It is urged by an elastic body.

[0005]

【Example】

 The configuration of the present invention will be described in detail below with reference to an embodiment shown in the drawings. 1 to 3 show a first embodiment of the present invention, in which a door bounce prevention device 1 of the present invention is constructed by suspending a door roller B of a door A on a rail C as in the conventional case. The rail C is attached to the open end side of the rail C configured to open and close. The bounce prevention device 1 is composed of a bracket 2, a braking body 3, and an elastic coil spring 4. The bracket 2 has a fulcrum shaft 22 and a guide shaft 23 projecting from both sides of a rectangular side plate 21, and mounting holes 24 and 24 are formed below the fulcrum shaft 22 and the guide shaft 23, respectively. Is bent and formed. The braking body 3 is formed by bending a rectangular plate to have a concave cross-section. The bottom wall 31 has a flat flat surface, and its tip projects obliquely upward from the side wall 33 to form a guide locking piece 32. An upper protrusion is formed at the tip of the side wall 33, and a vertically long guide hole 34 into which the guide shaft 23 is loosely fitted is cut out. Further, a shaft hole 35 into which the fulcrum shaft 22 is rotatably fitted is formed at the other end. The coil spring 4 has winding portions 42, 42 formed at both ends of a U-shaped bent leg 41, and legs 43, 43 project from the ends. Reference numeral 51 is a washer, 52 is a snap ring, and S is a stopper attached to the end of the rail C.

With this structure, the shaft hole 35 of the braking body 3 is fitted into the fulcrum shaft 22 of the bracket 2 so that it can be freely rotated by the washer 51 and the snap ring 52. Pivot. Further, the guide hole 34 of the braking body 3 and the winding portion 42 of the coil spring 4 are inserted into the guide shaft 23 so that the leg 43 of the coil spring 4 is brought into contact with the upper surface of the bottom wall 31 of the braking body 3 and the other side of the coil spring 4 is After the bending leg 4 is elastically contacted with the lower surface of the spring receiver 25 of the bracket 2, it is integrally assembled with the washer 51 and the snap ring 52 to assemble the bounce prevention device 1. The bounce prevention device 1 is attached to the opening end side of the rail C 1 by inserting a screw into the attachment hole 24, as shown in FIGS. As a result, the right end side of the braking body 3 inclines downward with the fulcrum shaft 22 as the fulcrum by the elastic force of the coil spring 4 as shown by the chain line in FIG. 2, and the bottom wall 31 is within the traveling path XX of the door car B. Is always energized, and a braking area L with the door roller B is formed over the entire length of the bottom wall 31.

Therefore, when the door A is opened from the closed state, the door roller B rolls on the rail C and moves to the position shown by the chain line in FIG. Further, as the door A continues to be pushed open, the door roller B contacts the bottom wall 31 of the braking body 3, so that the bottom wall 31 rotates upward with the fulcrum shaft 22 as a fulcrum against the elastic force of the coil spring 4. At the same time, the door roller B slides on the bottom wall 31 of the braking body 3 by the pressing force by the elastic force of the coil spring 4, so that the rolling force is absorbed. In particular, since the braking area L having a sliding distance with the bottom wall 31 is formed to be long, even if the door A is pushed open with a strong force, the door roller B is significantly decelerated and passes through the braking area L. As it moves to the stop piece 32, the elastic force of the coil spring 4 causes the braking body 3 to rotate downward again about the fulcrum shaft 22 as a fulcrum, and the door roller B is moved to the guide engagement piece 32 as shown in FIG. The door A can be stopped at the open position by engaging with the stopper S. Further, when the door A is closed, the door roller B pushes up the inclined surface of the guide locking piece 32 and slides on the braking area L of the bottom wall 31 of the braking body 3 contrary to the above-described door opening operation. The door A can be closed by rolling on C and passing through the braking body 3.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, both ends of the brake body 3 of the first embodiment are rotated instead of rotating the door stop side about one end as an axis. It is designed to be rotatable about the other end. That is, fulcrums and guide shafts 26, 26 are provided at both ends of the bracket 2, guide holes 35, 35 are cut out at both ends of the braking body 3, and a guide locking piece 32 is provided at one end of the bottom wall 31. A similarly formed guide piece 36 is projected. Others are the same as those in the first embodiment. As a result, when the fulcrum / guide shafts 26 and 26 of the bracket 2 and the coil springs 4 and 4 are inserted into both guide holes 35 and 35 of the braking body 3 to assemble the braking body 3, the braking body 3 is formed by the coil springs 4 and 4 at both ends. The fulcrum / guide shafts 26, 26 are respectively in contact with the upper ends of the guide holes 35, 35, and the braking body 3 is moved downward to position the bottom wall 31 in the traveling path of the door roller B in a parallel state.

With such a configuration, when the door A is opened, the door roller B contacts the guide piece 36 and moves upward against the elastic force of the coil spring 4, so that the fulcrum / gear on the right side also acts. Since the braking body 3 rotates to the right around the id shaft 26 as a fulcrum, the door roller B rolls on the rail C and travels while slidingly contacting the bottom wall 31. As a result, the left end of the bottom wall 31 moves downward again, and at the same time the right end moves upward against the elastic force of the coil spring 4, and when the door roller B reaches the center of the bottom wall 31, the bottom wall 31 is parallel to the rail C. Therefore, the elastic force of both coil springs 4 and 4 exerts the maximum elastic force on the door roller B and exerts a strong damping force. When the door roller B further travels, the bottom wall 31 inclines to the upper right as shown in FIG. 4, contrary to the above, and further rolls while slidingly contacting the bottom wall 31, passes through the braking area L, and passes through the guide locking piece 32. Since the door A is locked and stopped, the door A is securely held in the open state. Further, when the door A is closed, the brake body 3 operates in reverse to the above, and the door is surely opened.

[0010]

[Effect of the device]

 As described above in detail with respect to the various embodiments, according to the present invention, the bottom wall of the braking body is formed into a belt-shaped flat surface, and the elastic body is positioned so as to be constantly in contact with the running path of the door roller. Since the braking area is formed, when the door roller rolling on the rail enters the braking area, the door wheel is braked by the bottom wall, so the traveling speed is long even if the door is opened with a strong force. Since it passes through the braking area, even if the braking area has a weak pressing force, it can be surely decelerated and stopped at the door opening position. On the other hand, even when weak women and women, physically handicapped persons, and wheelchairs are operated to open the door, the braking force is weak, so the door car can be opened lightly and the door can be reliably bounced. It has an excellent effect that can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a side view of the second embodiment of the present invention.

FIG. 5 is a side view of the related art.

[Explanation of reference symbols] 1 bounce prevention device 2 bracket 22 fulcrum shaft 23 guide shaft 25 spring receiver 3 braking body 31 bottom wall 34 guide hole 35 shaft hole 4 coil spring L braking area A door B door roller C rail

Claims (1)

[Scope of utility model registration request] 1. A bracket provided with a braking body is attached to a door opening end side of a rail capable of hanging a door roller to open and close the door, and a belt-shaped flat surface formed on the braking body is located above the rail. It is arranged so as to face each other and is arranged so as to be able to move in and out of the running path of the door car, and is further urged by an elastic body so that the flat surface of the braking body is always in contact with the door car to form a longitudinal braking area. A door bounce prevention device.