JP2000130009A - Sash sheave with buffer device for automatic closing door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save labor of execution works and inspection works by fitting a drive gear having a built-in unidirectional clutch and meshing with a separate speed increasing gear row on an extended shaft of one side buffering sash sheave and actuating a centrifugal governer to regulate the retreating force of the laterally sliding door. SOLUTION: A sash sheave and a buffering sash sheave 6 are held by nearly 7-shaped retaining metal tools 4, 4 mounted on both sides of the upper part of a laterally sliding door so as to be rotatably pivoted. The laterally sliding door is engaged with a rail laid on the wall face of a head jamb in a pressure- contact state by the weight of the door to slidably support the door. A drive gear 9 provided with a built-in unidirectional clutch 8 and fitted to the extended shaft 7 of the buffering sash sheave 6 increases the speed of a small gear 10 constituting a speed increasing gear row in the gear ratio and further, increases the speed of a centrifugal governer 15 in the gear ratio. Hence, the speed of buffering sash sheave 6 is regulated together with the other sash sheave and it is smoothly brought into contact with the side column of an opening and brought to a stop when it ceases to retreat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-closing door bogie equipped with a shock absorber, and more particularly, to control the acceleration due to the biasing of a rebound when a horizontal sliding door retreats, so that the speed can be adjusted to a smooth retreat movement. A series of shock absorbers are linked to a buffer door axle that is pivotally supported by one of the holding brackets mounted on both sides of the upper side of the horizontal sliding door, and the door roller is pressed against the rail by the weight of the horizontal sliding door. As a result, the speed-up motion was reliably transmitted to the so-called governor using centrifugal force without slipping, and as a result of repeated experiments on the effect of buffering the retraction of the horizontal sliding door, it was confirmed that it was a super heavyweight fire sliding door. It has been proved that a very small shock absorber can sufficiently regulate the retraction bias to safely and smoothly suppress the impact at the retraction end.

[0002]

2. Description of the Related Art Conventionally, a horizontal sliding door with a self-closing device has been provided with many means for guiding to a shock absorbing device by using a torque of a rotating body at the time of retreat in order to save backward biasing. In most cases, a link member that transmits (linear motion) to a rotating body (rotating motion) rotates a chain wheel using a chain to prevent slippage, and operates a governor using centrifugal force while further increasing the speed. For this reason, the above-mentioned shock absorbers are added to the self-closing device, and an enlarged space is required above the Kamoi to facilitate installation, inspection, repair, and the like. Has become a drawback.

[0003]

SUMMARY OF THE INVENTION The present invention solves all the above-mentioned problems of the prior art, and is a safe and robust simple means for efficiently exhibiting a buffering capacity. It is an object of development to provide a replaceable compact shock absorber at low cost.

[0004]

The object of the present invention is mounted on the upper side of a horizontal sliding door with a self-closing device,
If there is a space above the opening upper frame on the side of the gate on the Kamoi side, it is easy to install the holding metal fitting with the shock absorbing door roller when the holding metal fitting that supports the sliding door that rolls by pressing against the rail can move left and right. It can be replaced and installed regardless of the prior art, eliminating the difficulties of the conventional technology, labor saving in construction and inspection, safety, robustness, miniaturization,
It is possible to provide a compact door car with a shock absorber that can obtain various effects at a low cost.

[0005]

A self-closing door with a shock absorber according to the present invention is pivotally supported by a plurality of holding brackets mounted on the upper side of a horizontal sliding door with a self-closing device, and rolls by sliding on a rail. In a sliding door roller, a drive gear with a built-in one-way clutch that engages with another speed increasing gear train and operates the centrifugal governor is fitted to the extension shaft of one side of the shock absorbing door roller, and the retracting bias of the horizontal sliding door is adjusted. It was made to be fast.

[0006]

[Operation] When the horizontal sliding door is moved forward by manual operation and comes into contact with or releases the wall side pillar, it starts to move backward with acceleration by the repulsive urging action. In such a case, each of the door pulleys (pulleys) pivotally supported by a plurality of holding brackets mounted on the upper side of the horizontal sliding door are pressed against rails provided on the side wall of the Kamoi by the weight of the horizontal sliding door and rolled without slipping. Move. The drive gear having a one-way clutch fitted on the extension shaft of one of the shock-absorbing doors is linked with a gear that meshes with the drive gear, and is further provided with a large gear that is integrally fitted on the extension shaft of the small gear. Because the pinion gears at the end of the row are interlocked, the speed increase by twice the gear ratio acts on the centrifugal shock absorber (commonly known as centrifugal governor) provided on the extension shaft of the final pinion, and the super-weight class It has been clearly demonstrated in repeated experiments that the sliding door for prevention also buffers the reversing biasing speed more than enough and smoothly stops against the side pillar of the opening. In addition, each door wheel rotates when the horizontal sliding door advances, but in the case where the drive gear is provided on the buffering door wheel extension shaft, the action of the one-way clutch is set so that the drive gear rotates only when the horizontal sliding door moves backward. The centrifugal governor works only when the sliding door is retracted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A self-closing door bogie with a shock absorber according to the present invention will be described with reference to an illustrative view. FIG. 1 is a schematic front view at the time of full opening in which a horizontal sliding door advances and abuts a side pillar on a wall surface. The horizontal sliding door 1 moves forward by manual operation and comes into contact with the side pillars 2 of the wall surface W and stops, or even when the horizontal sliding door 1 is released from the horizontal sliding door 1, the self-closing device B (structure omitted) is immediately moved backward by the backward biasing. At first, since the vehicle retreats while applying acceleration, the shock absorber is an essential installation condition. The door roller 5 and the buffer door roller 6 are rotatably supported by a substantially 7-shaped holding metal fittings 4 and 4 mounted on both sides of the upper side 1A of the horizontal sliding door 1, and are rotatably supported. The horizontal sliding door 1 is slidably supported by the horizontal sliding door 1 by the weight of the horizontal sliding door 1 so as to slidably support the horizontal sliding door 1. In addition, the buffering door wheel 6 has a drive gear 9 fitted and fitted with a one-way clutch 8 on its extension shaft 7 to rotate the next small gear 10 constituting a speed increasing gear train at an increased speed according to a gear ratio, and A centrifugal governor 15, which is a centrifugal governor using a centrifugal force, integrally connected to a pinion 13 and a pinion shaft 14 at the end of a gear train meshing with a large gear 12 integrally provided on an extension shaft 11 of the small gear 10. In order to rotate at a higher speed depending on the gear ratio, the shock absorbing door wheel 6 is regulated together with the other door wheel 5, and the opening O
It has been demonstrated that the side pillar 3 smoothly abuts on the side pillar 3 and stops, and the object of the present invention has been achieved. The holding metal fitting 4 on which the buffer door wheel 6 is supported projects over the horizontal center line of the buffer door wheel 6 with an appropriate width, rotatably supports the gear train, and operates the centrifugal governor 15 in a stable state. Since it is a unit-shaped independent shock door roller device, it can be easily mounted on the upper side 1A of the horizontal sliding door 1, so that it is easy to replace and replace the door wheel and the shock wheel door with ease compared to the existing horizontal sliding door. Labor saving.

[0008]

According to the present invention, a centrifugal governor (buffer) with a speed increasing gear train capable of suppressing the backward biasing of the horizontal sliding door is provided with a unique creation attached to the holding bracket of the door roller, thereby achieving a small centrifugal governor. However, the heavy-duty fire door was forcibly buffered, and no shock damage occurred at the slow speed at the end of retreat, and the governor and speed-increasing gear train were concentrated near the door bogie. The construction cost is reduced by labor saving at the time of construction, inspection, repair, and replacement, the space around the installation is reduced, and the cost is reduced by saving members. The various effects described above are significant.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an arrangement state of the present invention.

FIG. 2 is an enlarged plan view of a partially cutaway view taken along the line AA of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lateral sliding door 1A Upper side 2 Side pillar 3 Side pillar 4 Holding bracket 5 Door roller 6 Buffering door roller 7 Extended shaft 8 One-way clutch 9 Drive gear 10 Small gear 11 Extended shaft 12 Large gear 13 Pinion 14 Pinion shaft 15 Centrifugal governor B Self-closing device R rail O opening W wall H Kamoi

Claims (1)

[Claims] 1. A door wheel that is supported by a plurality of holding brackets mounted on an upper side of a horizontal sliding door with a self-closing device and that rolls while sliding on a rail. A drive gear with a built-in one-way clutch that engages with the gear train to operate the centrifugal governor is fitted to adjust the backward biasing force of the horizontal sliding door. Door car.