JPH051600Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a ceiling-storable shutter that can prevent the shutter curtain from falling when the suspension wire that raises and lowers the ceiling-storable shutter breaks. This relates to a fall prevention device.

[Prior Art] Conventionally, in ceiling storage type shutters, a shutter curtain consisting of a plurality of panels is sent to the ceiling along guide rails erected on both sides of the opening, or lowered to open and close the opening. Hanging wires are connected to both ends of the lowest panel forming the shutter curtain, and the hanging wires are wound up and unwound. Therefore, when the hanging wire breaks, a series of panels This has a safety drawback in that the shutter curtain may fall, causing unexpected accidents such as damage to the shutter curtain or injury to passersby within the opening/closing area of the shutter curtain.

Therefore, in order to eliminate the above drawbacks, a system has been proposed that detects the breakage of the suspension wire and prevents the shutter curtain from falling. In a ceiling storage type shutter in which the curtain storage area is formed by vertically curving the upper part of the shutter curtain in the horizontal direction along the ceiling, the shutter curtain is raised from the vertical part of the guide rail to the curtain storage area. Since the suspension direction of the suspension wire and the direction of movement of the shutter curtain are different, it becomes difficult to link the suspension of the shutter curtain with the fall prevention device, which complicates the configuration of the device and makes it necessary to ensure sufficient reliability. I feared that I would not be able to do so.

[Problems to be solved by the invention] In view of the above-mentioned actual situation, the present invention was devised to eliminate the drawbacks of the conventional method. It is possible to securely suspend the shutter curtain and simplify its fall prevention structure, and when the suspension wire breaks, it enables instantaneous fall prevention operation, thereby improving safety and reliability when raising and lowering the shutter curtain. The object of the present invention is to provide a fall prevention device for a ceiling storage type shutter that can be improved.

[Means for solving the problem] In order to solve the problem, the technical means adopted by the present invention is to connect hanging wires to both ends of the lowest panel forming the shutter curtain, and By winding and unwinding the wire, the shutter curtain is guided from the vertical parts on both sides of the opening to a pair of guide rails formed in a curved shape along the ceiling, and sent to a storage position on the ceiling, or A ceiling storage type shutter configured to be lowered to open and close an opening, wherein latch receivers are provided on one of the opposing inner walls of each of the guide rails at a predetermined interval in the vertical direction, and A lock arm, which is elastically biased toward the latch receiving side and has a locking hook at its tip, is pivoted to the lower end of both sides of the lowest panel so as to be rotatable back and forth, and the hanging wire is connected to the locking hook. It is characterized by the fact that

[Operation of the invention] Therefore, according to the invention, the fall prevention structure can be simplified and reliability can be improved, and the fall of the shutter curtain due to breakage of the suspension wire can be promptly and reliably prevented. be able to.

[Example] The configuration of the present invention will be described in detail with reference to an example shown in the drawings.

FIG. 1 is a perspective view of the fall prevention device of the present invention.
The solid line shows the state when the suspension wire breaks, and
The state when the suspension wire is under tension is shown by two-dot chain lines, and FIG. 2 is a partially omitted interior view of a ceiling storage type shutter to which the above device is applied.

In FIGS. 1 and 2 above, 1 is a shutter curtain formed by vertically connecting long panels 1a, and the shutter curtain 1 is pivoted to both ends of each panel 1a. It is guided via guide rollers 2 to guide rails 3 erected on both sides of the opening so as to be movable up and down.

The guide rail 3 is the shutter curtain 1
The upper part is curved horizontally along the ceiling to form a storage area, and one inner wall is hollow. Latch receivers 13, 13, . . . are bored at predetermined intervals in 3a.

At the top of the opening, there is a winding shaft 4 that is long in the opening direction.
is pivotally supported, and a winding drum 5 is pivotally attached to both ends of the winding shaft 4. Further, a winding biasing device 6 is coaxially attached to the winding shaft 4 and applies a rotational force to the shutter curtain 1 in the winding direction. In the figure, 7 is a coupling that connects the winding shaft 4 divided into two parts.

A suspension wire 8 is wound around the winding drum 5, and the lower end of the suspension wire 8 is connected to a panel 1a located at the lowest part of the shutter curtain 1 via a lock arm 11 of a fall prevention device 10, which will be described later. ' is connected to hanging pins 9 at both ends of the frame.

A lock arm 11 is pivotally supported at the lower ends of both sides of the panel 1a' via a hanging pin 9, and the tip of the lock arm 11 is engaged so as to face the latch receivers 13, 13... side of the guide rail 3. A locking hook 11a is attached, and a biasing bullet 12 is coaxially attached to the hanging pin 9, and the biasing force of the biasing bullet 12 constantly holds the lock arm 11 in the latch of the guide rail 3. It is biased to rotate toward the 13, 13... side. Further, the pin 11b inserted into the locking hook 11a is connected to the eye 8a of the suspension wire 8.
are connected to form the fall prevention device 10.

In the configuration as described above, the fall prevention device 1
The shutter curtain 1 equipped with Therefore, the suspension wire 8 is maintained in a tensioned state via the lock arm 11, and the lock arm 11 resists the biasing force of the biasing bomb 12, and the suspension wire 8 is held in tension as shown by the two-dot chain line in FIG. The shutter curtain 1 is raised and lowered while standing on the axis of the shutter curtain 8. Therefore,
The lowermost panel 1a' of the shutter curtain 1 is guided by the curved part of the guide rail 3, and the lowermost panel 1a'
Even when the hanging direction and moving direction of panel 1a' are different, the base end of the lock arm 11 rotates back and forth about the hanging pin 9 as a fulcrum to smoothly transfer panel 1a' to the storage section on the ceiling. I can do it.

If the suspension wire 8 breaks due to fatigue or other factors during the raising/lowering operation of the shutter curtain 1, the shutter curtain 1 will be moved to the bottom panel 1.
It falls from a' due to its own weight, but at this time, the hanging wire 8
The tension is released, and the lock arm 11 connected to the suspension wire 8 is rotated toward one inner wall 3a of the guide rail 3 with the suspension pin 9 as a fulcrum by the restoring force of the biasing device 12. The locking hook 11a directly connected to the suspension wire 8 immediately engages with one of the latch receivers 13, 13, . . . formed in the one side wall 3a, and the shutter curtain 1
will be prevented from falling.

[Effect of the invention] In short, the present invention connects suspension wires to both ends of the lowest panel forming the shutter curtain, and by winding and unwinding the suspension wires, the shutter curtain is A ceiling configured to open and close the opening by guiding the material from the vertical parts on both sides of the opening to a storage position in the ceiling by guiding it to a storage position in the ceiling by a pair of guide rails formed in a curved shape along the ceiling. In the retractable shutter, latch receivers are provided on one of the opposing inner walls of each of the guide rails at a predetermined interval in the vertical direction, and the latch receivers are elastically biased toward the latch receiver side, and the latch receivers are elastically biased toward the latch receiver side. A locking arm equipped with a locking hook is pivotally supported at the lower end of both sides of the bottom panel so as to be able to rotate forward and backward, and a hanging wire is connected to the locking hook, making it possible to use a shutter curtain with an extremely simple structure. Even if the bottom panel is located at the curved part at the top of the guide rail and there is a large difference in the angle between the lifting direction of the suspension wire and the moving direction of the panel, this will not affect the normal lifting/lowering operation. It is possible to securely suspend ceiling storage type shutters without causing damage, and when the suspension wire breaks, the locking hook can be activated instantly to prevent the shutter curtain from falling. This has the extremely useful practical effect of improving safety and reliability when raising and lowering the shutter curtain.

[Brief explanation of drawings]

The drawing shows one embodiment of the fall prevention device for a ceiling storage type shutter according to the present invention.
The figure is a perspective view of a main part, and FIG. 2 is an internal view of a half part of a ceiling storage type shutter to which the above device is applied. In the figure, 1... Shutter curtain, 1a'... Bottom panel, 3... Guide rail, 3a... Inner wall, 8... Hanging wire, 11a... Locking hook,
11...lock arm, 13...latch receiver.

Claims (1)

[Scope of utility model registration request] Hanging wires are connected to both ends of the lowest panel that forms the shutter curtain, and by winding and unwinding the hanging wires, the shutter curtain is moved from the vertical parts on both sides of the opening along the ceiling. A ceiling-storage type shutter configured to be guided by a pair of curved guide rails to a storage position in the ceiling or lowered to open and close an opening, the shutters having opposite guide rails. Latch receivers are provided on one of the inner walls at a predetermined interval in the vertical direction, and a lock arm with a locking hook at the tip, which is elastically biased toward the latch receiver side, is attached to the lowermost panel. A drop prevention device for a ceiling storage type shutter, characterized in that the shutter is pivotally supported at the lower ends of both sides so as to be rotatable back and forth, and a hanging wire is connected to a locking hook.