JPH0314202Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a guide rail structure for a smoke-proof screen that descends from the ceiling to partition the ceiling in order to prevent the spread of smoke in the event of a fire. be.

[Problems to be solved by the prior art and the invention] Today, in structures such as buildings that have a predetermined ceiling area, preventive measures are taken to prevent smoke generated in an emergency such as a fire from spreading along the ceiling. The Building Standards Act also requires that smoke walls be installed. Among such smoke-proof walls, there is a known smoke-proof screen that automatically lowers a sheet from the ceiling in response to a detection command from a smoke detector, dividing the ceiling into designated smoke-proof sections. . In this case, the guide rail that guides the seat body is also stored on the ceiling side during normal times, and it is desirable to configure it so that it automatically hangs down in response to a detection command from a smoke detector. As a means for automatically hanging the rail, for example, as shown in Japanese Utility Model Publication No. 57-57709, a guide rail whose upper end is pivotably supported toward the case side is used, and a roller provided on the guide rail is lowered repeatedly. There is a type of seat that is supported by a seat plate at the lower end of the seat body and can be transformed into a horizontal storage position stored in the ceiling and a lowered hanging position by rolling. It is excellent in that the guide rail swings between the storage position and the hanging position in conjunction with the vertical movement of the body, and is already in practical use. The swing angle of the rail caused a new problem, as the seat plate swung too far downward and deviated from the predetermined vertical position, causing the seat plate to come off the guide rail.

[Means to solve the problem]

In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a guide yawl structure for a smoke-proof screen that can eliminate these drawbacks. A horizontal storage device that is stored in the ceiling by rolling a guide rail that is pivotally supported by a roller provided on the guide rail that is supported by a seat plate at the lower end of the sheet body that is fed out and lowered. The guide rail is capable of changing its shape between a vertical position and a downwardly moved hanging position. This is characterized by the provision of a locking body that prevents the guide yawl from rotating too much.

With this configuration, the present invention is capable of automatically changing the shape of the guide rail in conjunction with the vertical movement of the plate while supporting the guide rail side with the seat plate. The guide rail, which descends as the seat body descends, is always positioned at a predetermined position to prevent excessive rotation.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings. In the drawing, 1 is a smoke-proof screen installed on the ceiling, and a sheet body 2 constituting the smoke-proof screen 1 is wound up on a winding shaft 4 installed above the ceiling board 3. However, the winding shaft 4 becomes free when the brake of the opening/closing machine (not shown) is released in response to a detection command from a smoke detector (not shown), and the smoke screen 1 is thereby released. As will be described later, a seat plate 9 provided at the lower end of the seat body 2 is guided by the guide rail 6 and lowered by its own weight, and is extended from the ceiling to partition the ceiling. It is configured as before. 7 is a case body for the smoke screen 1.

The guide rail 6 is formed of a substantially U-shaped cross section and is open on the inside.
Its upper end is supported by the case body 7 via a support shaft 8 so as to be able to swing up and down, and in the middle part, a guide rail 6 is installed in the ceiling to hold the seat body 2 in a horizontal storage position. A roller 10 that is rotatably placed on a seat plate 9 provided at the lower end is supported by a shaft, so that the guide rail 6 is attached to the seat plate 9
It is supported and held. As described above, as the sheet body 2 descends, the roller 10
rolling toward the end on the seat plate 9, the guide rail 6 rotates downward from the storage position to the vertical hanging position, and the support of the rollers 10 by the seat plate 9 is released. Thereafter, the seat body 2 is fed out and lowered while the seat plate 9 is guided by the guide rail 6. On the other hand, the bottom plate 6a of the gadrail 6 is appropriately cut out so that the seat plate 9 can penetrate the guide rail 6 and protrude to the opposite side until the guide rail 6 changes from the storage position to the vertical position. It's summery. Furthermore, the roller 10 of the guide rail 6
A pair of locking bodies 1 are provided on the inner wall surface of the opening on the distal side.
2 are protruded and fixed so as to face each other, and a retainer 11 is protruded from the seat plate 9. The retaining member 11 is arranged in a state where the guide rail 6 has moved downward to a substantially hanging position and the support and retention of the rollers 10 by the seat plate 9 has been released, that is, with respect to the horizontal seat plate 9. The guide rail 6 is vertically shaped and comes into contact with the locking body 12 while guiding the seat plate 9, thereby preventing the guide rail 6 from swinging beyond the hanging position.

In the embodiment of the present invention configured as described above, when the smoke detector is activated, the brake of the winding shaft 4 is released and the sheet body 2 is let out from the ceiling and lowered. As the rollably supported roller 10 rolls on the seat plate 9, the guide rail 6 is sequentially lowered from the stored position to the hanging position, and a smoke-proof compartment is immediately formed on the ceiling. That will happen.

In such a device that exhibits a linked operation between the seat plate 9 and the guide rail 6, at the stage immediately before the support of the roller 10 from the seat plate 9 is released, even a slight downward movement of the seat plate 9 will cause the guide rail 6 to rotate. As the angle of movement increases, the guide rail 6 rotates vigorously in this vicinity, and there is a risk that it will rotate beyond the predetermined hanging position, but with the present invention, such a situation does not occur at all, and the guide rail 6 rotates more forcefully than the predetermined hanging position. It will always stop in this position. That is, at the stage when the guide rail 6 is in the hanging position, the guide rail 6 is in a relationship perpendicular to the horizontal seat plate 9, but at this time, the locking body 12 provided on the guide rail 6 side Since the retaining body 11 provided on the side of the seat plate 9 is locked, the guide rail 6 is always stopped facing vertically, and if the seat plate 9 rotates too much as in the conventional case, the seat plate 9 will be stuck against the guide rail 6. There are no inconveniences such as falling off. Moreover, the verticality of the guide rail 6 is determined by the locking body 12.
Therefore, if the mounting position of the locking body 12 is made adjustable, the vertical adjustment of the guide rail 6 can be made extremely easily on site. There are advantages and the capital is good.

[Effect]

In short, the present invention is constructed as described above, and although it is designed to automatically transform the guide rail from the stowed position to the lowered hanging position as the seat board descends, it does not require rollers. Even if the guide rail rotates vigorously at the stage where the support by the seat plate is almost released and attempts to pass through the predetermined hanging position, the seat plate side will stop when the guide rail reaches the approximately predetermined hanging position. The prevention body locks with the locking body on the guide rail side and prevents the guide rail from rotating any further, so that the guide rail assumes a predetermined hanging posture. Therefore, there is no inconvenience such as the seat plate coming off the guide rail, and a smoke-proof compartment without smoke leakage can be reliably formed.

[Brief explanation of the drawing]

The drawing shows one embodiment of the guide rail structure of the smoke screen according to the present invention.
The figure is a front view of the installation of the smoke screen, the second figure is a vertical cross-sectional view of the same as above, the third figure It is a diagram. In the figure, 1 is a smoke screen, 2 is a sheet body, and 3
is the ceiling plate, 4 is the winding shaft, 6 is the guide rail, 7
1 is a case body, 8 is a support shaft, 9 is a seat plate, 10 is a roller, 11 is a retaining member, and 12 is a locking member.

Claims (1)

[Scope of utility model registration request] The upper end of the guide rail is swingably supported on the case side, and the rollers installed on the guide rail extend and roll while being supported by the seat plate at the lower end of the descending sheet body, so that the lower end of the guide rail moves into the ceiling. The guide rail is configured to be able to change its shape between a horizontal storage position and a lowered hanging position, and includes a guide rail that protrudes toward the seat plate side when the guide rail is lowered to the hanging position. A guide rail structure for a smoke-proof screen, characterized in that a locking body is provided to prevent excessive rotation of the guide rail that is locked to a retaining body of the structure.