JP2002357062A - Falling preventive device for shutter panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an over-slide type shutter falling preventive device, in which additional members are reduced extremely without almost working a normal shutter structure and which surely prevents the falling of a shutter. SOLUTION: The falling preventive device for a shutter panel has a structure having a block connecting the lower end of the shutter panel and one end of a balancing means reducing load in the case of the opening and closing of the shutter panel installed at the rear of a horizontal rail or a wire winder by a wire and being placed on a wire section parallel with the horizontal rail in the upper section of the horizontal rail and a hook piece formed at the lower section of the block and capable of being shaken up and down centering around a support shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall prevention device for a manual or electric overslide shutter provided in an opening of a garage or a warehouse.

[0002]

2. Description of the Related Art Conventionally, a fall prevention device for an oversliding shutter has been disclosed in Japanese Unexamined Patent Application Publication No. 9-303060, entitled "Overhead Door Fall Prevention Device" or Utility Model Registration No. 250.
No. 6478 “Shutter curtain fall prevention device” and the like.

[0003] Briefly explaining the function of the former patent, when the wire is cut, a stopper urged by a coil spring rotates and locks with a locking portion formed along the rail to stop the shutter from falling. Is what you do. The latter utility model has a configuration in which, when the winding wire is cut, the driving means biased by the coil spring rotates to pull the driving wire and the stopper pops out into the guide rail.

[0004]

However, in these shutter drop prevention devices, a locking member for locking a stopper that operates by cutting a wire is provided along the vertical rail, or the vertical rail is processed. Attaching a stopper, connecting the stopper to the operating part to operate the stopper with a wire, etc., requires a lot of members and processing only to prevent the shutter from falling, and also adds a fall prevention device to the existing shutter later In practice, it is impossible to install them.

[0005] In view of the above problems, the present invention requires little or no modification to a normal shutter structure without a fall prevention device, and minimizes the number of additional members.
An object of the present invention is to provide an over-slide type shutter drop prevention device capable of reliably preventing a shutter from falling.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a shutter panel attached to an opening of a building is provided with vertical rails on both sides of the opening and horizontal rails from the upper end of the opening to the lower side of the roof. In a shutter door that opens and closes along a pair of left and right guide rails provided continuously, a balance means or a wire winder that reduces a load at the time of opening and closing the shutter panel provided at the lower end of the shutter panel and the horizontal rail is provided. One end of the device is connected with a wire, and has a pulley mounted on a wire portion parallel to the horizontal rail above the horizontal rail, and a hook formed below the pulley,
Since the fall prevention device of the shutter panel has a structure capable of swinging up and down about the support shaft, the pulley of the fall prevention device mounted on the wire above the horizontal rail when the wire supporting the shutter panel is cut or loosened. Loses its support and falls down by its own weight around the support shaft, and the hook of the fall prevention device is locked to the support wheel shaft of the shutter panel to prevent the shutter from falling.

According to the second aspect, two hooks are formed at the front and rear at an interval of 1/2 of the interval between the support wheels of the shutter panel.
In the case of a single hook, the wire moves up to the distance between the support wheels of the shirt panel after the wire is cut. When the length is set to ２, it can be stopped by a fall of の 長 length as compared with the case of one hook.

According to a third aspect of the present invention, an inclined side is formed on the front side of each hook so that when the shutter panel whose fall is stopped is pushed up against its own weight, the hooks can dodge the support wheel axis of the shutter panel. Therefore, it is possible to open and close the shutter by pushing the shutter fully open to access the car or goods in the building, and to repair the wire of the shirt star and quickly restore the conventional way.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a left portion of a shutter panel 1 installed in an opening of a building A. The shutter panel 1 comprises a plurality of horizontally long panel members, each of which is vertically connected in a bendable manner to form a door that covers the opening. The shutter panel 1 includes a vertical rail 2 attached to the side of the opening, The horizontal rail 3 attached from the upper end toward the depth direction is continuously formed as a pair of left and right guide rails, and a plurality of support wheels attached to both sides of the shutter panel 1 are arranged in the guide rail to make the shutter door. 1 shows an overslidable shutter that can be opened and closed.

A wire 5 is connected to the lower end of the shutter panel, and a tension spring is disposed above and behind the horizontal rail 3 as balancing means 4 for reducing the weight of the shutter panel 1 when opening and closing. I have. The tension spring is connected to the other end of the wire 5 so that the strength of the shutter panel 1 to be lowered by its own weight and the strength of the spring to be pulled are adjusted to be almost the same. The right side has the same structure for left and right. Therefore, when the wire 5 is cut, the shutter panel 1 falls under its own weight. The fall prevention devices 6 are respectively arranged near the front of the horizontal rail 3 of the left and right guide rails.

FIG. 2 is an enlarged perspective view of the periphery of the fall prevention device 6, and shows a state of the fall prevention device 6 when the wire 5 is normal. The vertical rail 2 and the horizontal rail 3 are continuously connected by a connection rail 21 to form a guide rail, and the fall prevention device 6 is swung up and down by a support shaft 64 at a rear end toward the front of the horizontal rail 3. Installed. The main body of the fall prevention device 6 has a U-shaped cross section so as to cover the horizontal rail 3 from above, and a pulley 61 is arranged at the upper front part of the main body, and two hooks and a first hook 62 are located below the pulley 61. And a second hook 63 are formed, and an inclined side 65 is formed on the front side of each hook. First hook piece 62 and second hook piece 63
Is R, which is の of the distance L between the support wheels 11 supporting the shutter panel. The pulley 61 is placed on the wire 5 stretched in parallel above the horizontal rail 3, and the fall prevention device 6 is slightly raised from the horizontal rail 3 around the support shaft 64, so that the setting is made. It's done.

FIG. 3 is a perspective view showing the state of the fall prevention device 6 when the wire 5 is cut. Since the wire 5 is loosened by cutting, the fall prevention device 6 is under its own weight and is horizontally centered on the support shaft 64. Since it falls down on the rail 3, the support wheel shaft 12 of the shutter panel 1 is stopped by being hooked on the second hook 63. Depending on the position of the shutter panel 1 when the wire 5 is cut, the support wheel shaft 12 may be hooked on the first hook 62.

When the shutter panel 1 is pushed up in a state where the shutter panel 1 is stopped by the fall prevention device 6, the support wheel immediately before the support wheel hooked on the hook hits the inclined side 65 of the first or second hook. When the hook is returned inside the rail while pushing up the fall prevention device 6 and the hook piece gets over the support wheel axis, the fall prevention device 6 again overlaps the horizontal rail 3 and the hook piece prevents the support wheel from moving forward. Thus, even when the wire 5 is cut, the shutter panel 1 can be pushed up to open the opening of the building A.

[0014]

As described above, according to the fall prevention device of the present invention, a pulley to be placed on a wire is arranged at the upper front part of a U-shaped main body, and a hook is formed below the pulley to form a hook. Since it is a structure that can only be mounted on the left and right guide rails, there is no need to separately attach a stopper and a stopper locking member to the normal shutter door structure, and it does not require complicated processing,
It can be manufactured at low cost, has a simple structure, does not easily cause failure or malfunction, and ensures safety in case of emergency. It can also be easily installed on the existing shutter door on site.

Further, since two hooks are formed on the fall prevention device and the interval between them is の of the interval between the support wheels of the shutter panel, the wire is cut off from the shutter panel, and then 1/1/2 of the interval between the support wheels. You can stop within two. In addition, the sloped side is formed in front of the hook, so that the shutter panel that has been closed can be pushed up and held in the open state, so that articles in the building can be taken in and out, cars can be taken in and out, and the wire can be restored quickly. Can be performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a left part of a shirt door utilizing the present invention.

FIG. 2 is a perspective view showing a normal state of the fall prevention device.

FIG. 3 is a perspective view showing a state when the fall prevention device is operated.

[Explanation of symbols]

 A: Building 1: Shutter panel 2: Vertical rail 3: Horizontal rail 4: Balance means 5: Wire 6: Fall prevention device

Claims (3)

[Claims] 1. A shutter panel attached to an opening of a building is opened and closed along a pair of left and right guide rails provided with a vertical rail on both sides of the opening and a horizontal rail extending from the upper end of the opening to the lower side of the roof. In such a shutter door, the lower end of the shutter panel and one end of a balancing means or a wire winding device provided at the rear of the horizontal rail to reduce the load at the time of opening and closing the shutter panel are connected by a wire, and the horizontal rail is connected to the horizontal rail above the horizontal rail. It has a pulley mounted on a parallel wire portion and a hook formed below the pulley, and the hook is vertically moved about a support shaft so that the hook is hooked on a support wheel shaft of a shutter panel due to loosening or disconnection of the wire. A shutter panel fall prevention device with a swingable structure. 2. The shutter panel fall prevention device according to claim 1, wherein two hooks are formed at the front and rear of the shutter panel at a half length of the interval between the support wheels of the shutter panel. 3. An inclined side is formed on the front side of each hook so that when the shutter panel whose fall is stopped is pushed up against its own weight, the hooks can dodge the support wheel axis of the shutter panel. 3. The shutter panel fall prevention device according to 1 or 2.