JP3552833B2 - Automatic closing type sliding door braking system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a braking device for a self-closing type overhead sliding door.
[0002]
[Prior art]
Some self-closing overhead suspension sliding doors use a braking device to reduce the speed of the sliding door immediately before fully closed in order to prevent impact and noise when closing.
[0003]
A conventional self-closing type hanging door sliding brake will be described with reference to FIGS.
[0004]
A rail 2 is provided in the upper frame portion 1, and a sliding door 4 is suspended from the rail 2 via a suspension wheel 3, and an opening / closing drive device (not shown) is connected to the sliding door 4. Further, a closing brake device 5 for reducing the closing speed of the sliding door 4 immediately before full closing and a stop device 6 for preventing the sliding door 4 from rebounding when fully opened are provided in the upper frame portion 1.
[0005]
The closing brake device 5 will be described.
[0006]
An air cylinder 9 is provided on the upper frame 7 via a support 8 in parallel with the rail 2, and a rod 10 of the air cylinder 9 protrudes toward the door ass. The hanging wheel 3 on the side of the sliding door 4 is provided on the sliding door 4 via a bracket 11, and the bracket 11 is provided with a rod receiver 12 facing the air cylinder 9.
[0007]
Immediately before the sliding door 4 is completely closed, the rod receiver 12 comes into contact with the rod 10 and pushes the rod 10 together with the movement of the sliding door 4. The air cylinder 9 generates a resistance proportional to the pushing speed of the rod 10, reduces the speed of the sliding door 4, and prevents impact and noise at the time of closing.
[0008]
Next, the stop device 6 will be described.
[0009]
A stop device 6 is provided at the door end of the rail 2.
[0010]
A stopper receiver 13 is fixed to an end of the rail 2, a stopper rubber 14 is provided on the stopper receiver 13 to abut on the bracket 11, and a roller 15 is rotatably provided on an upper end of the stopper receiver 13. A leaf spring 16 extends from the bracket 11 toward the door bottom, and the leaf spring 16 can be engaged with the roller 15 with the sliding door 4 fully opened.
[0011]
When the sliding door 4 is fully opened, the bracket 11 abuts against the stop rubber 14 to buffer the impact, and the leaf spring 16 engages the roller 15 to prevent rebound.
[0012]
[Problems to be solved by the invention]
In the above-mentioned conventional braking device, the braking is performed only immediately before the sliding door 4 is fully closed, and the braking is not performed immediately before the sliding door 4 is fully opened. Therefore, the recoil of the sliding door 4 cannot be maintained by only the engagement force between the leaf spring 16 and the roller 15, and the sliding door 4 rebounds. Further, if the engaging force is set to sufficiently suppress the recoil of the sliding door 4, there is a problem that a large force is required to separate the roller 15 and the leaf spring 16 when the sliding door 4 is closed.
[0013]
The present invention has been made in view of the above circumstances, and has as its object to provide a braking device for a self-closing type overhead sliding door in which braking is applied to both the opening direction and the closing direction of the sliding door.
[0014]
[Means for Solving the Problems]
The present invention is characterized in that a brake cylinder is provided in a sliding door, a brake wire is engaged with the brake cylinder, and the brake wire moves a rod of the brake cylinder immediately before fully closing and fully opening the sliding door. A brake cylinder is provided in the sliding door in a vertical position, a brake wire is movably inserted into the brake cylinder, a weight is attached to the lower end of the brake wire, and an engagement fitting is attached to the upper end. A closing direction braking hook is provided on the door end side of the upper frame portion side, and an opening direction braking hook is provided on the door end side, and an engagement fitting engages with the closing direction braking hook immediately before the sliding door is fully closed. The alloy tool can be engaged with the opening direction braking hook immediately before the sliding door is fully opened.
[0015]
Thus, the braking force acts in both the fully closed and fully opened directions of the sliding door, and suppresses the impact noise when fully closed and fully opened.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
1 to 3, FIG. 1 shows a state in which the sliding door 4 is moved to an intermediate portion, FIG. 2 shows a fully closed state, and FIG. 3 shows a fully opened state.
[0018]
A braking cylinder 20 is disposed vertically inside the sliding door 4 on the side of the door, and a rod 21 of the braking cylinder 20 is capable of extending and contracting downward. The rod 21 is hollow, and allows the brake wire 22 to pass through the rod 21 and the brake cylinder 20 main body. An engagement fitting 23 is engaged with the upper end of the brake wire 22. Further, the brake wire 22 hangs down further below the rod 21, and a weight 24 is attached to the lower end of the brake wire 22. A closing direction braking hook 25 is provided on the door end side of the upper frame 1, and an opening direction braking hook 26 is provided on the door bottom side of the upper frame 1.
[0019]
The engaging fitting 23 comes into contact with the closing direction braking hook 25 immediately before fully closing, and the engaging fitting 23 comes into contact with the opening direction braking hook 26 just before fully opening. The distance that the sliding door 4 moves until the sliding door 4 is fully closed by contacting the closing direction braking hook 25 is equal to the distance that the engagement fitting 23 moves by contacting the opening direction braking hook 26 and fully opened. If A, the weight 24 is in contact with the rod 21 and the distance A for pushing the rod 21 into the brake cylinder 20 is equal to the distance A.
[0020]
Immediately before the sliding door 4 is fully closed, the engaging member 23 contacts the closing direction braking hook 25, and the sliding member 4 moves, and the engaging member 23 moves relative to the sliding door 4, and the weight 24 is lifted. The weight 24 comes into contact with the rod 21 and the sliding door 4 is braked by pushing the rod 21.
[0021]
Similarly, immediately before the sliding door 4 is fully opened, the engaging member 23 of the sliding door 4 abuts on the opening direction braking hook 26, and with the movement of the sliding door 4, the engaging member 23 moves relative to the sliding door 4, the weight 24 is pulled up, and the weight 24 is lifted. The sliding door 4 is braked by the abutment of the rod 24 on the rod 21.
[0022]
When the sliding door 4 moves intermediately, the rod 21 projects downward and the weight 24 pulls down the brake wire 22, and the engagement fitting 23 is located at the upper end of the brake cylinder 20, that is, at the neutral position.
[0023]
Thus, braking works in both directions of the sliding door 4.
[0024]
The braking wire 22 can also be implemented by engaging with the upper frame 1 side.
[0025]
The upper end of the brake wire 22 is engaged at an intermediate position of the amount of movement of the brake cylinder 20 when the sliding door 4 is fully closed and fully opened, and the length of the brake wire 22 suspended from the rod 21 and the stroke of the rod 21 are added to the foot. The length obtained is equal to or slightly larger than half of the movement amount of the brake cylinder 20. With such a configuration, the weight 24 abuts on the rod 21 immediately before the sliding door 4 is fully closed and fully opened, and the rod 21 is pushed in with the movement of the sliding door 4, so that a braking force is applied.
[0026]
The brake cylinder 20 can be set to a desired posture such as horizontal or oblique by providing a guide pulley appropriately in the sliding door 4 and hanging the brake wire 22. Further, although the braking force is applied to the brake cylinder 20 in the pushing direction of the rod 21, the braking force may be applied to the drawing direction of the rod 21. Further, the brake cylinder 20 may be provided at the center of the sliding door 4 or at the door tip side instead of the door bottom side.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to perform braking in the fully closed direction and the fully open direction in the self-closing type overhead sliding door, thereby improving safety, suppressing impact and noise, and reducing the time of full opening. Bounce can be prevented.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an embodiment of the present invention.
FIG. 2 is an operation explanatory view of the first embodiment.
FIG. 3 is an operation explanatory view of the first embodiment.
FIG. 4 is an overall explanatory view of a self-closing type hanging door.
FIG. 5 is an explanatory view of a main part of a conventional example.
6 is a view as viewed in the direction of arrows AA in FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper frame part 4 Sliding door 22 Brake wire 23 Engagement fitting 24 Weight 25 Closing direction braking hook 26 Opening direction braking hook

Claims (1)

A brake cylinder is provided in a vertical position in a sliding door, a brake wire is movably inserted into the brake cylinder, a weight is attached to a lower end of the brake wire, and an engagement fitting is attached to an upper end of the brake wire. closing direction braking hook door leading end side of the, respectively provided on door trailing side opening direction braking hook, engages alloy equipment before all close straight of the sliding door engages the closing direction braking hook, also the engagement alloy member is a sliding door Immediately before full opening, it is possible to engage with the opening direction braking hook, and after the engagement fitting is engaged, the engagement fitting moves relative to the sliding door with the movement of the sliding door, and the weight is moved via the braking wire. Wherein the rod of the brake cylinder is moved by the movement of the brake wire, and the sliding door is braked.

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