JPH0332377Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is normally stored in the ceiling, and in the event of an emergency such as a fire, it lowers under its own weight in conjunction with a smoke detector, etc., and moves through a non-smoke passageway. This invention relates to a smoke-proof screen that is formed to block smoke from spreading.

[Prior art and problems to be solved by the invention] In general, this type of smoke screen falls all at once due to its own weight in an emergency, so if it is installed in a room with a relatively low ceiling, it may hit the head of the person directly below it. There is a risk that the screen will fall, and there is also a risk that the screen winding shaft may be deformed due to the impact of the fall, so it is necessary to regulate the falling speed of the screen.

By the way, in the past, as a method for regulating the falling speed of the screen, for example,
As disclosed in Publication No. 34135, a spring balancer is interlocked and connected to the screen winding shaft,
There are known smoke screens that are configured to restrict their rotational speed, but in order to fully utilize their functions, smoke screens that are often installed in a long longitudinal direction on the ceiling surface are Dimensions and extension dimensions vary depending on the installation site, so
Since the weight of the screen itself, the speed at which it falls, and the impact of the fall will naturally vary, the device itself will not only be large-scale, but also require the preparation of various springs to regulate the speed of fall, and the adjustment of the number of turns of the spring. However, the disadvantage was that a device had to be manufactured to suit each site.

In addition, as disclosed in Japanese Utility Model Application Publication No. 55-32736, wires are wound around a cylindrical wire drum that is provided at the side end of the pipe seat plate and is thick in the center and tapered on both sides. A device is known in which one end is connected to an opening/closing machine and the other end is connected to the ground, and the falling speed is regulated by changing the winding diameter of a cylindrical wire drum. Not only do we have to create a special guide rail with a complicated shape, but also the wire is connected to the ground.
This has the disadvantage that it obstructs traffic and therefore it is not possible to install multiple smoke screens in series.

[Means for solving the problem] The present invention was devised in view of these actual circumstances and to eliminate these drawbacks. The smoke screen is a smoke screen that is stored in a storage section with a wire and lowers under its own weight in the event of an emergency such as a fire, and the storage section has a wire feeding mechanism and a wire feeding speed controlled in conjunction with the feeding mechanism. A plurality of shock absorbers configured with a speed regulating mechanism are provided at predetermined intervals in the longitudinal direction, and a wire fed out from the shock absorbers is attached to the lower end of the smoke screen in order to operate in conjunction with the fall of the dead weight. It is characterized by being connected to the provided seat plate.

With this configuration, the present invention does not require any changes to the configuration of the shock absorber itself, even if the longitudinal dimensions and extension dimensions, the weight of the screen itself, the falling speed, the impact of the fall, etc. differ depending on the installation site. The purpose of the present invention is to provide a smoke prevention screen with a shock absorbing device that can maintain an appropriate fall balance of the entire smoke prevention screen by simply installing it at an approved location at appropriate intervals. be.

[Example] Next, an example of the present invention will be described based on the drawings. Reference numeral 1 denotes a cloth made of a noncombustible material constituting a smoke-proof screen device, and the lower end of the cloth 1 is fixed to a pipe-shaped seat plate 2 with a presser plate 2a and a rebate 2b, and the upper end of the cloth 1 is The sides are connected and fixed in a case 9 provided inside the ceiling, wrapped around the seat plate 2, and stored in a stacked state on the case lid 6.

Reference numeral 3 denotes a shock absorbing device, and the shock absorbing device 3 consists of a rotatable winding drum 19 constituting a mechanism for feeding out the wire 5, and a governor (centrifugal brake) device 26 constituting a speed regulating mechanism. are interlocked and connected via transmission gears 21, 22, 23, 24, and 25. A wire 5 is wound around the outer peripheral surface of the winding drum 19, and a spiral spring 20 that always biases the winding drum 19 toward the winding side is installed inside the winding drum 19. On the other hand, the governor device 26 includes a pair of rotatable brake shoes 26b, 26b that contact the inner wall surface 26a by centrifugal force, and a state in which the brake shoes 26b, 26b are always in contact with the inner wall surface 26a in a stopped state. It is constituted by coil springs 26c, 26c that bias toward the compression side so as to release and separate. Then, the tip of the wire 5 fed out from the governor device is connected to a cylindrical wire fitting 27, and the wire fitting 27 is rotatably fitted to the seat plate 2 via a bearing 28, and the shock absorber 3 is mounted inside the storage case 9. Furthermore, in the embodiment shown in FIG. 4, for example, when the smoke screen that is unwound from the winding shaft is stored in a long shape, a plurality of the buffer devices 3 are provided at appropriate intervals. Wires 5, 5... drawn out from the respective shock absorbers 3, 3... are connected and fixed to the seat plate 2 of the smoke screen. It goes without saying that in this case, it is desirable that the shock absorbers 3 be arranged evenly on the left and right sides.

Reference numeral 4 denotes a release device which is activated by a signal from a smoke detector or manual operation (not shown), and includes a latch fitting 11 which is biased by a tension spring 16 provided inside the case 9. It is starting to operate. This latch fitting 11 is latched to a hook latch 12 provided on the lid 6 of the case 9, and when the opening device 4 is operated, the latch fitting 11 is rotated by the repulsive force of the tension spring 16. When the hook latch 12 is moved, the lock with the hook latch 12 is released. Also, hook latch 1
A connecting rod 13 is provided on the upper part of the case 9, and when the case 9 is elongated and a plurality of hook latches 12 are provided, the connecting rod 13 can be used to connect these hook latches 12,
Each hook latch 1 so that 12... can be operated at the same time.
2, 12, . . . , and is slidably supported on a roller 14 provided on a support portion having an inverted U-shaped cross section from the upper part of the case 9.

On the other hand, hinges 7, 7, etc. are provided on the lid 6 of the case 9 on the opposite side to the side where the hook latch 12 is provided, and when the hook latch 12 is released from the latch hook 11, The lid 6 is designed to be opened by rotating under its own weight.

Reference numeral 15 denotes a guide rail for smoothly guiding the seat plate 2 and cloth 1 when the edge screen falls under its own weight.

[Function] In the embodiment of the present invention configured as described above, when the release device 4 is activated in conjunction with the activation of a smoke detector in an emergency such as a fire, the latch latch 12 of the latch latch 11 is disconnected. The locked state is released and the lid 6 of the case 9 rotates downward under its own weight about the hinge 7 as a fulcrum. Simultaneously with the rotation of the lid 6, the cloth 1 is expanded due to the fall of the weight of the seat plate 2 stored in the lid 6 in a stacked state. Since the tip of the wire 5 that is fed out from the shock absorber 3 provided in the shock absorber 9 is connected to the seat plate 2, when the falling speed of the seat plate 2 exceeds a certain speed, the governor (centrifugal brake) device 26 is activated. Brake shoe 26b, 26
b comes into rotational contact with the inner wall surface 26a due to centrifugal force, and the falling speed is controlled and buffered. Therefore, even if the longitudinal dimensions and extension dimensions of the smoke screen vary depending on the installation site, and the weight, falling speed, and impact of the fall of the smoke screen itself vary, the configuration of the shock absorber 3 itself does not need to be changed in any way. The spring balancer is interlocked and connected to the screen winding shaft as in the past, with a simple structure that requires only installation at the approved locations at appropriate intervals taking length, weight, etc. into consideration. Not only does it eliminate the need to prepare various springs to regulate the falling speed, adjust the number of turns of the spring, etc., which would make the device itself large-scale, and also eliminates the need to manufacture a device to suit each site. Even if multiple smoke screens are installed in series,
Since the wire drum protrudes to the side of the seat plate, there is no need to manufacture a special guide rail with a complicated shape, and there is no need to connect the wire to the ground, so it does not obstruct traffic. Therefore, it is possible to save labor in terms of production and work, and moreover, it is not affected by the size of each individual site, and without compromising the smoke prevention function in any way.
It is possible to provide a smoke prevention screen with a buffer device that can maintain an appropriate falling balance of the entire smoke prevention screen.

[Effects of the invention] In summary, according to the present invention, the smoke screen is a smoke screen that is normally stored in a storage section provided in the ceiling of a building, and that drops under its own weight in the event of an emergency such as a fire. A plurality of buffer devices each consisting of a wire feeding mechanism and a speed regulating mechanism interlocked with the wire feeding mechanism and regulating the feeding speed of the wire wire are provided in the section at predetermined intervals in the longitudinal direction. Since the wire to be paid out is connected to a seat plate provided at the lower end of the smoke screen in order to operate in conjunction with the fall of its own weight, the length and the length of the wire to be paid out vary depending on the installation site. In contrast, even if the weight of the smoke screen itself, the falling speed, and the impact of the fall are different, there is no need to change the structure of the shock absorber itself; instead, it is possible to set appropriate intervals by taking into account the length, weight, etc. This can be done with a simple structure that requires only installation at an approved location, thus eliminating the need for the shock absorber itself to become large-scale or to be manufactured to suit each site. It can now be applied to various smoke screens, and
Even when multiple smoke screens are installed in series, there is no need to manufacture special guide rails, there is no need to disturb passersby, and there is no influence on the fit of each individual site. Not only can a proper falling balance of the entire smoke prevention screen be maintained without impairing the smoke prevention function in any way, but also labor-saving can be achieved in terms of production and work, resulting in extremely effective effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the smoke prevention screen with a buffer device according to the present invention, in which FIG. 1 is a vertical cross-sectional view showing the cloth in the stored state and the stretched state, and FIGS. Fig. 3 is an explanatory diagram of the attachment of the wire fed out from the device to the seat plate, Fig. 3 is an explanatory diagram of the main part showing how the cloth is attached to the seat plate, Fig. 5 is a plan view showing the internal mechanism of the shock absorber, Fig. 6 is − in Figure 5.
FIG. In the figure, 1 is the cloth (of the smoke screen device), 2 is the seat plate, 3 is the shock absorber, 4 is the opening device, 5 is the wire, 6 is the lid, 7 is the hinge, 8 is the hinge mounting plate, 9 10 is a storage case, 10 is a bolt, 11 is a latch fitting, 12 is a piece latch, 13 is a connecting rod, 14 is a roller, 15 is a guide rail, 16 is a tension spring, 17 is a case, 18 is a fixed shaft, 19 is a winding drum, 20 is a spiral spring, 21, 22, 23, 2
4 and 25 are gears, 26 is a governor (speed regulating) device,
26a is the inner wall surface, 26b is the brake shoe, 26
c is a coil spring.

Claims (1)

[Scope of utility model registration request] This is a smoke-proof screen that is normally stored in a storage section provided in the ceiling of a building, and lowers under its own weight in the event of an emergency such as a fire. A plurality of shock absorbers are provided at predetermined intervals in the longitudinal direction, each consisting of a regulating mechanism that regulates the speed at which the wire is fed out, and the wire that is fed out from the shock absorbers is
A smoke prevention screen with a buffer device, characterized in that the smoke prevention screen is connected to a seat plate provided at a lower end of the smoke prevention screen so as to operate in conjunction with the fall of the dead weight.