JPH0451816Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a fire protection device in which a sheet body descends from the ceiling and partitions the ceiling into predetermined sections to prevent the spread of smoke generated in the event of a fire. Regarding smoke screens.

[Problems to be solved by the prior art and the invention] Today, structures such as buildings that have a predetermined ceiling area are equipped with a system to prevent smoke from spreading through the ceiling during an emergency such as a fire. The Building Standards Act also stipulates that some kind of smoke prevention measures must be taken. Among these smoke prevention measures, the sheet body is automatically lowered from the ceiling in response to a command from a sensor such as a smoke detector.
There are so-called smoke screens that partition the ceiling into smoke-proof compartments of a predetermined area.
The one shown in Publication No. 57709 is known. However, in this case, a central pillar with a notch at the bottom through which the seat board passes is pivoted to the ceiling so that it can be swung horizontally within the ceiling, and the seat body is guided. The structure is configured to be able to change its shape into a hanging position, thereby connecting multiple sheet bodies to form a smoke-proof compartment. Therefore, when installing this product in a smoke-proof compartment that has a bending part. In this case, the notch is exposed, and as a result,
Smoke that had spread along the ceiling leaked out through the cutout, so further improvements were needed.

Moreover, such smoke screens are required to undergo periodic inspections, and in that case, it is strongly desired that the smoke screens, once suspended from the ceiling, be easily stored in their original state.

[Means for Solving the Problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a smoke-proof screen that can eliminate these drawbacks. A smoke-proof screen whose body is suspended from the ceiling to form a smoke-proof compartment, in which a plurality of smoke-proof screens are arranged vertically at predetermined intervals in a state of being bent along the smoke-proof compartment. A horizontal aggregate to be installed, a seat plate at the lowest end, and a pair of front and back sheet bodies whose upper and lower ends are fixed to the ceiling and the seat plate, respectively, and arranged on both sides with the aggregate in between,
an actuating wire wound around a winding drum, the pair of sheet bodies are configured such that adjacent aggregates remain opposed to each other, and only the portion facing the aggregate is integrated with the aggregate, and the actuating wire is At all times, the lower end of the seat plate is connected to the seat plate through a through hole drilled between the pair of sheet bodies and in each aggregate, and the seat plate is suspended from the actuating wire, and the actuating wire is wound around the winding drum. is stored in the ceiling in a folded position in which the sheet body between adjacent aggregates bulges out in the front and back directions, and in the event of an emergency such as a fire where the operating wire is drawn out, the sheet body expands vertically and closes the ceiling. It is characterized by being configured so that it hangs down from the base.

With this configuration, the present invention is a smoke-proof screen in which the sheet body can be stored in the ceiling at all times, and in the event of a fire, etc., it is automatically lowered in response to a smoke detector. It can be formed into a curved shape without using a central pillar, and can highly prevent smoke leakage, and can also be easily stored after inspection.

[Example] An example of the present invention will be described based on the drawings. 1
1 is a smoke-proof screen formed into a substantially L-shape in plan view, and the smoke-proof screen 1 is composed of a sheet body 2, a guide rail 3, a case body 4, and the like. In this case, when the brake of the winding drum 5 is released in response to the detection of a smoke detector (not shown) as will be described later, the sheet body 2 is moved into the storage space housed in the case body 4 as described later. It is designed to change from the posture to a hanging posture in which it is lowered by the guidance of the guide rail 3.

5a is a support shaft of the winding drum 5, and the support shaft 5a is supported by the case body 4 to support the winding drum 5 within the case body 4. 5 is provided on each side of the L-shape of the case body 4 formed in an L-shape, and is synchronously rotated by means of coupling means such as bevel gears (not shown) meshing with each other and fixed to each support shaft 5a. I'm starting to do that.

On the other hand, the sheet body 2 has a pair of front and back sides,
They are arranged to face each other so as to sandwich a pipe body 6 serving as an aggregate, and their upper edges are integrally supported within the case body 4. In other words, this pipe body 6 is
In a state where it is bent into an approximately L shape along the smoke-proof compartment,
A plurality of sheet bodies 2 are arranged at predetermined intervals in the vertical direction, and a pair of sheet bodies 2 arranged on the front and back sides of the pipe body 6 remain facing each other with respect to the adjacent pipe bodies 6. However, the pipe body opposing parts are sewn together so that the pipe body 6 is inserted and integrated with the pipe body 6. Further, a pair of substantially L-shaped sections 7a are attached to the lower edge of the sheet body 2 from both sides, sandwiching the sheet body 2 from the front and back. Fixed. At the bent portion of the smoke screen 1, the seat plate 7 is bent into a substantially L-shape by cutting the opposite end edges of the profile 7a in an inclined shape. Moreover, the pipe body 6
Both left and right end portions of are formed in a shape that can be slidably fitted to the guide rail 3 in the vertical direction.

A plurality of actuation wires 8 are wound around the winding drum 5, and the actuation wires 8 pass through the through holes 6a formed between the sheet bodies 2 and in the pipe body 6, and the lower end thereof is connected to the seat plate 7. A locking piece 9 provided on the bottom of the
It is integrally fixed to. And the seat plate 7 is
It has a suspended structure by the actuation wire 8,
The sheet body 2 moves up and down in response to the rotation of the winding drum 5, and as a result, the sheet body 2 hangs from the ceiling and is in a stretched state with a smoke-proofing effect, and the sheet body 2 is placed between adjacent pipe bodies. The gap bulges outward, and it expands and contracts into a state where it is folded and stored within the ceiling.

A sealing material 3a is provided inside the guide rail 3, which is made of an elastic material and seals the space between the sheet body 2 and the guide rail 3 in a state that allows the sheet body 2 to slide. It is something to do.

In the embodiment of the invention constructed as described above, the sheet body 2 has an actuating wire 8 connected to the winding drum 5.
In the normal state when it is wound up, it is stored in the case body 4 in a folded state that bulges out in the front and back directions, but if smoke is detected in an emergency such as a fire, the winding The brake on the drum 5 is released, and as a result, the winding drum 5 rotates synchronously due to the weight of the seat plate 7, etc., and unwinds the actuating wire 8, thereby causing the sheet body 2 to unfold. Meanwhile, the seat plate 7 is lowered to the lowest position and takes a hanging position hanging from the ceiling, forming a smoke-proof compartment.

As described above, in the present invention, the sheet body 2 can automatically transform from the stored position to the hanging position to form a smoke-proof compartment and achieve smoke-proof effect. The structure is not one in which a plurality of sheet bodies are connected in a connected manner using It is possible to reliably prevent smoke leakage in the area. Moreover, since the sheet body 2 is framed by the pipe body 6 even at the bending part, it is possible to extremely effectively suppress the wobbling of the sheet body 2 due to the hot air flow in the event of a fire. There is no problem even if it is.

Moreover, in order to store the smoke screen 1 after putting it in a hanging position for periodic inspection, the operating wire 8 is wound up by the winding drum 5 and the seat plate 7 is pulled up. Based on this, the sheet body 2 is automatically folded, eliminating the need for troublesome storage work, resulting in a significant improvement in workability.

It goes without saying that the present invention is not limited to the above-mentioned embodiment, and by appropriately changing the shapes of the sheet body 2, pipe body 6, etc., it is possible to create a shape other than the L-shaped one in the above-mentioned embodiment.
It can also accommodate various smoke screen shapes such as T, X, and T-shapes.

Further, the pipe body 6 may be constructed as an assembly type in which the bent portion is a pipe joint (elbow) and the bent portion and the straight portion are made of different pipe materials.

[Operations and Effects] In summary, in the present invention, as constructed as described above, the smoke-proof screen is constructed so that the sheet body can be transformed from the storage position where it is stored on the ceiling side to the hanging position. Although it is a thing,
The smoke-proof screen can form a series of smoke-proof compartments including the bent portions using a single sheet, and as a result, there is no need to provide the conventional connecting pillars at the bent portions. Moreover, it is possible to reliably prevent smoke spreading along the ceiling from leaking from the bent portion of the smoke screen.

Moreover, even though this sheet was a single sheet that formed a smoke-proof compartment including the folded parts, the sheet had a shake-preventing structure reinforced with aggregate even at the folded parts. Since this is adopted, it is possible to effectively suppress the wobbling of the sheet body due to hot air currents in the event of a fire, and it is possible to provide extremely excellent smoke prevention performance.

Moreover, in order to store the smoke screen after it has been placed in a hanging position for periodic inspection, the operating wire is wound up by the winding drum and the seat plate is pulled up. Since it is automatically folded, there is no need for troublesome storage work, which results in a significant improvement in work efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the smoke prevention screen according to the present invention, in which FIG. 1 is a general plan view of the smoke prevention screen, FIG. 4 is a perspective view of the seat body, and FIG. 5 is a horizontal sectional view showing the seat body fitted into the guide rail. In the figure, 1 is a smoke screen, 2 is a sheet body, and 3
is a guide rail, 4 is a case body, and 6 is a pipe body.

Claims (1)

[Scope of utility model registration request] A smoke-proof screen for forming a smoke-proof compartment by hanging a sheet from the ceiling in the event of an emergency such as a fire, the smoke-proof screen being folded along the smoke-proof compartment at a predetermined interval in the vertical direction. A pair of front and back aggregates are arranged on both sides with the aggregates in between, and the lowermost seat plate is fixed to the ceiling and the seat plate at the upper and lower ends, respectively. and an actuating wire wound around a winding drum, the pair of sheet bodies are configured such that adjacent aggregates remain opposed to each other, and only the portion facing the aggregate is integrated with the aggregate; The lower end of the actuating wire is connected to the seat plate through a through hole drilled between the pair of sheet bodies and in each aggregate, and the seat plate is suspended from the actuating wire, so that the actuating wire is connected to the winding drum. When wrapped, the sheet body between adjacent aggregates is stored in the ceiling in a folded position that bulges out in the front and back directions, and in an emergency such as a fire when the operating wire is drawn out, the sheet body is expanded vertically. A smoke-proof screen characterized by being configured so that it hangs from the ceiling by extending it.