JP3048993B2 - Fireproof screen equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory screen device, for example, a device for preventing the spread of smoke and the spread of fire in a fire.

[0002]

2. Description of the Related Art In recent years, a fire-resistant screen device having a non-steel non-combustible sheet for fire protection and flame prevention has been used in places where the use of steel fire and flame protection shutters has been prescribed by the Building Standards Law. It is supposed to be.

[0003] This type of fireproof screen device is required to have fire resistance and airtightness in the same manner as a steel fireproof / flameproof shutter according to the Building Standards Law. For example, as shown in Figs. A vertical guide rail a fixed to both sides is provided, and a non-combustible fabric is formed between the guide rails a on both sides to shield the shielded portion b between the guide rails a on both sides. The noncombustible sheet body c is provided so as to be able to move up and down, and a flooring plate e is provided at the lower end of the noncombustible sheet body c so as to land on the floor surface d of the shielded part b.

When the noncombustible sheet c is lowered along the guide rails a on both sides, the landing plate e at the lower end of the noncombustible sheet c is moved to the floor d of the shielded portion b.
The shielded portion b is hermetically shielded by the non-combustible sheet c and a flooring plate e at the lower end of the non-combustible sheet c.

[0005]

In the refractory screen device shown in FIGS. 6 and 7, the non-combustible sheet c and the landing plate e cover the shielded portion b, and the non-combustible sheet c is When heated by the fire heat and thermally contracted upward, the non-combustible sheet c lifts the flooring board e, which has landed on the floor surface d, between the flooring board e and the floor surface d. A gap f may be generated and airtightness may be impaired.
Further, when the non-combustible sheet body c is pushed by the hot air and pressed by the pressure, the non-combustible sheet body c is bent in the pressing direction and pulled up,
The non-combustible sheet member c lifts the flooring plate e that has landed on the floor surface d, and a gap f is generated between the flooring plate e and the floor surface d, which may impair airtightness. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and even if the non-combustible sheet is thermally contracted or is pushed by hot air and pressed by the pressure, the lower end of the non-combustible sheet is formed. It is an object of the present invention to provide a fire-resistant screen device that can prevent a gap from being formed between the screen and a floor surface, and thus can maintain sufficient airtightness when the shielded portion is shielded.

[0007]

According to a first aspect of the present invention, there is provided a refractory screen device comprising: a guide rail which is fixed to both sides of a shielded portion and has an insertion opening formed in a vertical direction so as to face each other; A non-combustible sheet body which is provided to be movable up and down by inserting both side ends in the width direction into the insertion openings of the guide rails, and which is provided at a lower end of the non-combustible sheet body when lowering the shielded portion; A non-combustible landing body that is to be placed on the floor surface of the shielded part, wherein the non-combustible landing body is formed at a lower end of the non-combustible sheet body and both end portions of the non-combustible sheet body. A weight receiving portion in the width direction of the non-combustible sheet body opened at the opening; and insertion openings for the guide rails at the both side portions which are housed in the weight receiving portion and project from both ends of the weight receiving portion at both side ends. Have insertion protrusions that can be inserted up and down A weight body, formed at the lower end of the weight storage section, has both sides flattened by the weight of the weight body at the time of landing on the floor surface of the shielded part and protrudes in opposite directions. A floor covering, which is provided at the lower end of the floor covering, and the lower end of the floor covering is held horizontally to land on the floor of the shielded part. And a landing plate to be formed.

When the non-combustible sheet body is to be shielded, the non-combustible sheet body is lowered so that both ends in the width direction of the non-combustible sheet body extend along the insertion openings of the guide rails on both sides. In the weight body of the landing body, the insertion projections at both ends are lowered along the insertion openings of the guide rails on both sides, and the non-combustible sheet body is smoothly lowered due to the weight of the non-combustible landing body. You.

In addition, the lowering of the noncombustible sheet body causes the floor plate at the lower end of the floor closing body provided on the noncombustible flooring body to land on the floor, and the noncombustible sheet body is further lowered. Due to the weight of the weight of the non-combustible landing body, the floor covering is pressed from above, and both sides of the floor covering are in contact with the floor on the front and rear floors of the landing plate. The floors are each deformed into a flat shape with a large surface, and landed as landing sections protruding in opposite directions.

[0010] The lower end of the non-combustible sheet member and the floor are hermetically closed by the floor closing body having a landing portion before and after both sides of the floor closing body are deformed.

In this case, the floor blocker is pressed from above by the weight of the weight while the floor plate holding the lower end of the floor blocker horizontally is placed on the floor.
Both sides of this floor blocker are folded upward and downward while being spread downward, respectively, and the contact surface with the floor is enlarged on the floors at the front and rear of the landing board. As a result, they are firmly deformed into a shape, and are brought into close contact with each other as landing portions protruding in opposite directions.

Therefore, the landing board placed on the floor at the lower end of the floor covering and the floor covering placed on the front and rear floors of the floor covering before and after both sides of the floor covering are deformed. Between the lower end of the non-combustible sheet member and the floor surface is reliably airtightly closed by the floor blocker having the floor, and the floor surface is closed before and after landing on the floor. When the body is pressed from above by the weight of the weight body, it is possible to prevent a gap from being formed between the landing section before and after the floor blocker and the floor surface.

When the shielded portion is shielded, the airtightness and fire resistance of the shielded portion are improved as a whole by the non-combustible sheet member and the non-combustible flooring body. The outflow of hot air and the like toward the side is prevented, and the diffusion and spread of smoke such as hot air are prevented.

Next, with the non-combustible sheet member and the non-combustible landing member hermetically shielding the shielded portion, the non-combustible sheet member is pushed by hot air or the like, and the non-combustible sheet member is pressed by the pressure. Thereby, when the non-combustible sheet body is bent in the pressing direction and pulled up, the weight body is pulled up at the lower end of the non-combustible sheet body, and the weight body has landed on the floor surface with the weight body. A floor blockage having a landing section at the front and back is pulled up.

At this time, in a state where the flooring board holding the lower end portion of the floor surface closing body in a horizontal state is landed on the floor surface, both sides of the floor surface closing body are folded up and down in two to form a flat shape. By being landed as a deformed landing part,
When the floor covering is lifted, the folded part located at the upper part of the folded part of the front and rear landing parts is raised, and the floor covering corresponds to the lifting of the non-combustible sheet body. The landing portion located on the floor surface, which is located at the lower part of the half-fold of the section, is prevented from being pulled up, and the landing portions of the landing portions before and after the landing portion continue to land on the floor surface.

Therefore, even if the non-combustible sheet body is lifted by being heated by the hot air or the like and being deflected by receiving the pressure, the non-combustible sheet body is incombustible by the floor closed body having a landing portion before and after the floor corresponding to the raising. There is no gap between the lower end of the conductive sheet and the floor, and the space therebetween is securely hermetically closed.

Next, with the non-combustible sheet and the non-combustible landing body hermetically shielding the shielded portion, the non-combustible sheet is heated by fire heat and contracts upward. In the case where there is, a floor blocker having a landing portion before and after landing on the floor via a weight body with the nonflammable sheet body according to the heat shrinkage of the nonflammable sheet body Is raised.

At this time, the floor blocker is located at the upper part of the folded portion of the landing section before and after the non-combustible sheet body in the same manner as when the non-combustible sheet body is lifted by being heated by hot air or the like and flexed by receiving the pressure. The folded part is raised to correspond to the heat shrinkage of the non-combustible sheet body, and the landing part located on the floor surface at the lower part of the front and rear landing fold is prevented from being lifted The landing portions of the landing sections before and after this are continuously landed on the floor surface.

Therefore, even if the non-combustible sheet body is heated by fire heat and contracts, the non-combustible sheet is closed by a floor blocker having a landing portion before and after the floor corresponding to the heat contraction amount. There is no gap between the lower end of the body and the floor surface, and the space therebetween is reliably airtightly closed.

According to a second aspect of the present invention, there is provided a fireproof screen device according to the first aspect, wherein the weight receiving portion is formed of a hollow cylindrical portion which is formed by folding a non-combustible sheet body and opening at both ends. The weight body is formed by a rod-shaped weight inserted into the hollow cylindrical portion.

The rod-shaped weight is inserted into the hollow cylindrical part from the opening at one end of the hollow cylindrical part toward the opening at the other end, so that the insertion protrusions at both end parts of the rod-shaped weight are hollow. The rod-shaped weight is easily accommodated in the hollow cylindrical portion so as to protrude from both openings of the cylindrical portion.

The hollow cylindrical portion is formed by folding a non-combustible sheet member, so that the hollow cylindrical portion is formed to be non-combustible. The housed rod-shaped weight is sufficiently protected.

According to a third aspect of the present invention, there is provided the fireproof screen device according to the first aspect, wherein the floor covering is a bag-like body having a double-sided portion opened at both ends by folding a non-combustible sheet member. Formed.

When the bag is landed on the floor surface, both sides are easily deformed into a flat shape due to the weight of the weight body, and are protruded as landing sections in opposite directions. In addition, the bag-like body is formed by folding a non-combustible sheet body,
This bag-like body is formed incombustible, and even if this bag-like body receives hot air, the space between the lower end of the non-combustible sheet body and the floor surface is securely airtightly closed. You.

According to a fourth aspect of the present invention, there is provided a fire-resistant screen device according to the first or third aspect, wherein the bag-like body is provided with the lower end horizontally at a lower end continuous to both sides of the bag-like body. It has a landing plate for holding, and the landing plate is formed in such a size that when the bag-like body is lowered, both sides of the bag-like body are tensioned in a state of being expanded downward and lowered. .

When the non-combustible sheet is lowered, the landing plate is lowered while the landing plate is suspended via the bag by the weight, and the weight of the landing plate causes the bag to be lowered. Is lowered by tensioning both sides thereof downward.

Further, when the flooring board has landed on the floor, both sides of the bag-like body are reliably folded in two vertically while expanding downward, and the front and rear parts of the flooring board are also folded. Is securely deformed into a flat shape in a state where the contact surface with the floor surface is enlarged, and is brought into close contact with each other as landing portions protruding in opposite directions.

According to a fifth aspect of the present invention, there is provided a fireproof screen device according to the first or fourth aspect, wherein the landing plate is an upper and lower landing plate having horizontally sandwiched lower ends continuous on both sides of the bag-like body. It is formed by.

Then, the lower end continuous to both sides of the bag-like body is sandwiched by the upper and lower landing plates, and is securely held horizontally. Further, when the non-combustible sheet body is lowered, the upper and lower landing boards are lowered while the upper and lower landing boards are suspended via the bag-like body by the weight body, and the weight of the upper and lower landing boards is reduced. The bag-like body is lowered with further tension in a state where both sides are expanded downward. Further, the weight of the upper and lower landing plates and the weight body allows the non-combustible sheet body to smoothly descend.

According to a sixth aspect of the present invention, there is provided a refractory screen apparatus according to the first aspect, wherein:
When the non-combustible sheet body is lifted, the non-combustible sheet body closes an opening on the ceiling of the shielded part where the non-combustible sheet body moves up and down.

When the non-combustible sheet is raised, the floor board is raised by the non-flammable sheet body, and the ceiling opening of the shielded portion where the non-combustible sheet body is lifted and lowered by the floor board is securely closed. In addition, it is possible to prevent an unsightly state in which the opening is kept open at the time of non-fire, and to enhance appearance.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

Numerals 1 denote left and right guide rails vertically fixed to the opposite side walls of the shielded portion 2 so as to face each other. The left and right guide rails 1 face each other and are vertically inserted. The opening 3 is formed to have a substantially U-shaped cross section. Although not shown, the insertion opening 3 is formed in each of the inner plate portions of the guide rail 1 and has a vertical guide piece formed to face an opening edge thereof. The shielded portion 2 means an entrance, an emergency exit, a passage, and the like.

A screen box 5 in which the upper ends of the left and right guide rails 1 are respectively inserted is fixed to a ceiling wall 4 such as an upper frame of the shielded portion 2, and the screen box 5 is attached to the lower end thereof. Left and right opening portions 6 which are opened to communicate with the insertion openings 3 of the left and right guide rails 1 respectively.
have. The screen box 5 is accommodated in a ceiling 7 having the ceiling wall 4, and the opening 6 of the screen box 5 is formed as an opening 6 of the ceiling 7.

A take-up shaft 9 having a take-up drum 8 in the left-right direction is rotatably mounted in the screen box 5, and one end of the take-up shaft 9 drives the take-up shaft 9. A rotating rotating wheel 10 is fixed. Further, a forward / reverse rotatable motor 11 is fixed in the screen box 5,
A drive wheel 13 is fixed to the output shaft 12 of the motor 11 at a position facing the rotating wheel 10, and an endless revolving body 14 is suspended between the driving wheel 13 and the rotating wheel 10 so as to freely rotate. ing. The motor 11 is automatically stopped at a predetermined number of rotations set in accordance with a landing position at which a non-combustible landing body, which will be described later, land on the floor surface 15 of the shielded portion 2. Has become.

Next, the upper end of a vertically movable non-combustible sheet 16 for shielding the shielded portion 2 is fixedly wound around the winding drum 8, and the non-combustible sheet 16 is disposed at both ends in the width direction. The portions are formed as insertion portions 17 which are inserted into the insertion openings 3 of the left and right guide rails 1 so as to be able to move up and down. At the lower end of the non-combustible sheet member 16, a non-combustible landing member 18 is provided, which is placed on the floor surface 15 of the shielded part 2.

The non-combustible sheet 16 is made of non-combustible cloth made of, for example, glass cloth or silica cloth. Then, the non-combustible sheet body 16 has an upper end fixed to the winding drum 8 and is rewound freely, and is rewound from the winding drum 8 by the unwinding rotation of the winding drum 8. With the insertion portions 17 at both ends inserted into the insertion openings 3 of the left and right guide rails 1, they are lowered along the left and right guide rails 1.

The non-combustible landing body 18 is formed at the lower end of the non-combustible sheet body 16 and is opened at both ends of the non-combustible sheet body 16. Part 19
Weight bodies 21 each having an insertion projection 20 inserted into the insertion opening 3 of the left and right guide rails 1 at both end portions and housed therein.
A hollow floor covering 24 formed at the lower end of the weight storage portion 19 to form a landing portion 23 that deforms the two-sided portion 22 into a flat shape and protrudes in opposite directions to each other; Closure 24
And a landing plate 25 for holding the lower end of the floor horizontally and landing on the floor surface 15.

That is, the non-combustible sheet body 16 shields the shielded portion 2 and has the non-combustible landing body at the lower end.
It is formed to have a length in the vertical direction that forms the weight holding portion 19 and the floor surface closing body 24. The position at which the weight storage portion 19 is formed on the non-combustible sheet body 16 is defined as the lower end of the non-combustible sheet body 16, and the lower portion of the non-combustible sheet body 16 below the lower end of the non-combustible sheet body 16 is used. Is folded upward, and the folded end portion 26 is
The lower end 16 is abutted against and polymerized, and the overlapped fixing portion 27 of the folded end 26 is integrally fixed with a non-combustible sewing thread or the like. Also,
At a predetermined interval below the overlapping fixing section 27, the overlapping fixing section 28 below the lower end of the incombustible sheet body 16 that has been polymerized is integrally fixed with a noncombustible sewing thread or the like.

The hollow weight receiving portion 19 is formed between the upper and lower fixing portions 27 and 28 in the width direction of the non-combustible sheet member 16 which is open at both end portions of the non-combustible sheet member 16.
The weight receiving portion 19 is formed by a hollow cylindrical portion 29 bulging into a cylindrical shape.

The weight body 21 is provided with the hollow cylindrical portion 29.
It is formed by a rod-shaped rod-shaped weight 30 that is inserted into and accommodated therein.
The rod-shaped weight 30 is inserted into and accommodated in the hollow cylindrical part 29 from the opening at one end of the hollow cylindrical part 29 toward the opening at the other end thereof. 20 project from both openings of the hollow cylindrical portion 29, respectively.

When the non-combustible sheet member 16 is folded back at the lower end of the weight storage portion 19 via the overlapping fixing portion 28, the weight member 21 is attached to the floor surface 15 when it is landed.
Due to the weight of the (bar-shaped weight 30), the two-sided portion 22 is deformed into a flat shape so that the landing portion 23 protrudes in the opposite direction to each other.
The above-mentioned hollow floor blocker 24 is formed.

The floor blocker 24 has a bag-like shape having a relatively large drape at the lower end of the weight storage portion 19 via the overlapping fixing portion 28, and having the both side portions 22 opened at both side ends. The body 31 is formed. Further, both side ends of the bag-shaped body 31 are formed so as to be able to move up and down close to the opening edge of the insertion opening 3 without being inserted into the insertion opening 3 of the left and right guide rails 1.

The weights of the weight body 21 (the bar-shaped weight 30) cause the both sides 22 of the floor surface closing body 24 to be folded in two vertically, respectively, to be deformed into a flat shape, and to land before and after landing. The front and rear landing sections 23 are formed as a landing section 23, and the landing section 23 is located on the folded surface 23a located at the upper part of the two-fold and the floor part 15 is located at the lower part of the folded part where the folded part 23a is folded. And a landing portion 23b for flooring.

The floor blocker 24 (bag-like body 31)
At the lower end portion of the floor surface closing body 24 (bag-like body 31), which is continuous with the both surface portions 22, the flooring plate 25 for holding the lower end horizontally and landing on the floor surface 15 is provided. . The landing board 25
Are formed by upper and lower landing plates 25a and 25b which horizontally hold the lower end portion continuous to both side portions 22 of the floor surface closing body 24 (bag-like body 31).

The upper and lower landing plates 25a and 25b are formed of left and right incombustible plate-like members having a size larger than the diameter of the weight body 21 (the bar-shaped weight 30) and extending in the front-rear direction.
Both end portions in the left-right direction are formed so as to be able to move up and down close to the opening edge of the insertion opening 3 without being inserted into the insertion opening 3 of the left and right guide rails 1.

The lower landing board 25b is slightly larger than the upper landing board 25a and is formed to extend in the front-rear direction. The upper and lower landing boards 25a, 25b are formed at both edges in the front-rear direction. Each has a ridge 25c projecting upward.

Then, the lower ends of the upper and lower landing plates 25a and 25b, which are continuous with the both sides 22 of the floor surface closing body 24 (bag-like body 31), are horizontally held between the upper and lower landing plates 25a and 25b. The flooring plate 25 having a bottom surface 25b is formed on the floor surface 15 when the non-combustible sheet body 16 descends, and is formed in a shape to close the opening 6 of the ceiling 7 when the non-combustible sheet body 16 rises. I have. The lower and upper landing plates 25 which horizontally hold the lower ends continuous with the both surface portions 22 of the floor surface closing body 24 (bag-like body 31).
a and 25b are fixed by fixing means (not shown).

Next, the operation of the above embodiment will be described.

In normal times, such as during a non-fire situation, the non-combustible sheet 16 is wound up and raised, and the ceiling 7 is opened by the landing plate 25 provided on the non-combustible floor 33 at the lower end of the non-combustible sheet 16. Part 6
Is closed. Therefore, the unsightly appearance of the opening 6 of the ceiling 7 being opened is prevented, and the appearance is maintained as a passage or the like.

Next, when the shielded portion 2 is shielded, for example, when the motor 11 is operated by a fire signal at the time of a fire that shields the shielded portion 2, the output from the motor 11 causes the winding shaft 9 to be incombustible. The non-combustible sheet member 16 is driven and rotated in a direction to rewind the non-combustible sheet member 16 from the winding drum 8 of the winding shaft 9.
Are sequentially rewound, and the landing plate 25 of the non-combustible landing body 33 at the lower end of the non-combustible sheet body 16 is lowered from the opening 6 of the ceiling 7.

The non-combustible sheet member 16 has two insertion portions 17 of the non-combustible sheet member 16 and two insertion projections 20 of the weight 21 (bar-shaped weight 30) of the non-combustible landing member 18, respectively. The weight 21 (bar-shaped weight 30) and the floor board 25 of the non-combustible flooring body 18 provided at the lower end of the non-combustible sheet body 16 are guided and lowered by the insertion opening 3 of the guide rail 1. Lowers smoothly and quickly due to weight.

At this time, the landing plate 25 is formed to have a size larger than the diameter of the bar-shaped weight 30 and to have a shape extending in the front-rear direction.
The (bag-like body 31) is lowered by tensioning the double-sided portion 22 in a state where the both-side portion 22 is expanded downward. In other words, the floor blocker 24 is lowered in a substantially triangular shape with the floor plate 25 as the base.

When the non-combustible sheet member 16 is lowered, the landing plate at the lower end of the floor closing member 24 provided on the non-combustible floor member 18 is provided.
25 is landed on the floor surface 15 of the shielded part 2 and the non-combustible
Is lowered to a predetermined position, and the motor 11 rotates at a set predetermined rotation speed and stops.

That is, the lowering of the non-combustible sheet member 16 causes the floor plate 25 at the lower end of the floor closing member 24 provided on the non-combustible floor member 18 to land on the floor surface 15, and further, the non-combustible sheet member 16 is lowered to lower the nonflammable landing body 18 to a predetermined position, and the motor 11 rotates at a set predetermined number of rotations and stops.

The weight of the weight 21 of the non-combustible landing body 24 pushes the floor covering 24 from above, and the both sides 22 of the floor covering 24 are placed on the floor at the front and rear of the landing plate 25. The floor 15 is deformed into a flat shape with a large contact surface with the floor surface 15 and is landed on the surface 15 as landing portions 23 projecting in opposite directions.

In this manner, the floor closing member 24 having the landing portion 23 before and after the deformation of the both surface portions 22 of the floor closing member 24 allows the space between the lower end of the non-combustible sheet member 16 and the floor surface 15 to be formed. Airtightly closed.

In this case, the floor covering 24 is
The floor plate 25 holding the lower end of the floor 24 in a horizontal state is pressed from above by the weight of the weight body 21 in a state where the floor plate 25 is landed on the floor surface 15, so that both surface portions 22 of the floor surface closing body 24 are respectively The floor 15 is folded upward and downward while being spread downward, and the floor 15
The contact surface is securely deformed into a flat shape with a large contact surface, and is brought into close contact with each other as landing portions 23 projecting in opposite directions.

Therefore, the floor surface at the lower end of the floor blocker 24
The flooring board 25 landed on the floor 15 and the floor surface of the front and rear parts of the flooring board 25
The non-combustible sheet body 16 is provided by the floor covering 24 having the floor 23 before and after the deformation of the both sides 22 of the floor covering 24 on the floor 15.
Between the lower end portion and the floor surface 15 is securely airtightly closed, and the floor surface closing member 24 having the landing portion 23 before and after landing on the floor surface 15 is moved by the weight of the weight body 21. By being pressed from above, the landing section 23 before and after the floor blocker 24 and the floor surface
A gap is prevented from being formed between the first and the second embodiments.

When the shielded portion 2 is shielded, the airtightness and fire resistance of the shielded portion 2 are improved as a whole by the non-combustible sheet member 16 and the non-combustible flooring member 18. The flow of hot air and the like from one side to the other side is prevented, and the diffusion and spread of smoke such as hot air are prevented.

Next, in a state where the shielded portion 2 is hermetically shielded by the non-combustible sheet member 16 and the non-combustible landing member 18, the non-combustible sheet member 16 is fanned by hot air or the like, and the pressure thereof causes the non-combustible sheet member 16 to be insulated. When the non-combustible sheet body 16 is deflected in the pressing direction and pulled up by being pressed,
The weight body 21 is pulled up at the lower end of the non-combustible sheet body 16, and the floor blockage body 24 having the landing section 23 before and after landing on the floor surface 15 is pulled up by the weight body 21. .

At this time, in a state where the flooring plate 25 holding the lower end of the floor covering 24 in a horizontal state is placed on the floor 15, the both side portions 22 of the floor covering 24 are folded in two vertically. When the floor covering 24 is lifted up by being placed as the floor 23 that is bent and deformed into a flat shape, the floor covering 24 is placed at the upper part of the front and rear landing parts 23 in two folds. The folded portion 23a located is raised to correspond to the lifting of the non-combustible sheet member 16, and the landing portion 23b, which is located at the lower part of the folded portion 23 of the front and rear landing portions 23 and has landed on the floor surface 15, is raised. The landing section 23 of the landing section 23 before and after this is prevented.
b is still on the floor 15.

Therefore, even if the non-combustible sheet member 16 is lifted by being heated by hot air or the like and being deflected by receiving the pressure, the floor closing member 24 having the landing portion 23 before and after the lifting is provided. Thus, there is no gap between the lower end portion of the non-combustible sheet member 16 and the floor surface 15, and the gap therebetween is securely hermetically closed.

Next, the non-combustible sheet body 16 is heated by the fire heat and shrinks upward in a state where the shielded portion 2 is airtightly shielded by the non-combustible sheet body 16 and the non-combustible landing body 18. If there is such a case, depending on the heat shrinkage of the non-combustible sheet body 16, the non-combustible sheet body 16 may be worn before and after landing on the floor surface 15 via the weight 21. The floor covering 24 having the floor 23 is raised.

At this time, the floor blocker 24 is a non-combustible sheet.
As in the case where 16 is lifted by being heated by hot air and flexed by receiving the pressure, the landing area before and after
The folded portion 23a located at the upper part of the two-fold of 23 is pulled up and corresponds to the amount of heat shrinkage of the non-combustible sheet body 16, and located at the lower part of the two-fold of the landing part 23 before and after this, on the floor 15 The landing portion 23b that has landed is prevented from being pulled up, and the landing portions 23b of the landing portion 23 before and after the landing are continuously landed on the floor surface 15.

Therefore, even if the non-combustible sheet member 16 is heated by fire heat and contracts, the floor closing member having the landing portions 23 before and after corresponding to the heat contraction amount.
At 24, there is no gap between the lower end portion of the non-combustible sheet member 16 and the floor surface 15, and the space therebetween is reliably airtightly closed.

Next, the weight receiving portion 19 is provided with the non-combustible sheet member 16.
Is formed by a hollow cylindrical portion 29 opened at both ends, and the weight body 21 is a rod-shaped weight 30 inserted into the hollow cylindrical portion 29.
By inserting the rod-shaped weight 30 through the hollow cylindrical part 29 from the opening at one end to the opening at the other end, the insertion projections 20 at both ends of the rod-shaped weight 30 are formed in the hollow cylinder. The rod-shaped weight 30 is easily accommodated in the hollow cylindrical portion 29 so as to protrude from both openings of the cylindrical portion 29.

The hollow cylindrical portion 29 is formed by folding the non-combustible sheet member 16 so that the hollow cylindrical portion 29 is formed to be non-combustible. The rod-shaped weight 30 accommodated in the cylindrical portion 29 is sufficiently protected.

The floor covering 24 is a bag-like body 31 having both sides opened at both ends by folding the non-combustible sheet 16.
The bag-shaped body 31 is easily deformed into a flat shape by the weight of the rod-shaped weight 30 at the time of landing on the floor surface 15 and is protruded as the landing section 23 in the opposite direction to each other. You. Further, the bag-shaped body 31 is formed by folding the non-combustible sheet body 16 so that the bag-shaped body 31 is formed non-combustible,
Even if the non-combustible bag 31 receives hot air, the space between the lower end of the non-combustible sheet 16 and the floor surface 15 is reliably airtightly closed.

The landing boards 25 are upper and lower landing boards 25 a, 25 which horizontally hold the lower ends continuous with both sides 22 of the bag 31.
b and the upper and lower landing plates 25a and 25b
The lower end portion continuous to both side portions 22 of 31 is securely held horizontally, so that when the non-combustible sheet body 16 descends, the upper and lower landing plates 25a, twenty five
The upper and lower landing plates 25a, 25b are lowered while the b is suspended, and the bag-like body is moved by the weight of the upper and lower landing plates 25a, 25b.
The lower part 31 is further lowered while the both-side part 22 is expanded downward. Also, the upper and lower landing boards 25a, 25b
The non-combustible sheet body 16 is smoothly lowered by the weight of the rod-shaped weight 30.

Further, when the non-combustible sheet member 16 is lifted, the landing plate 25 closes the opening 6 of the ceiling 7 of the shielded portion 2 where the non-combustible sheet member 16 moves up and down.
The opening 6 of the ceiling 7 of the shielded portion 2 where the non-combustible sheet body 16 rises and falls is securely closed, and in the normal state of a non-fire situation, the unsightly appearance of the opening 6 being opened is prevented, and the appearance is improved. Enhanced.

Next, in the above embodiment, the floor covering
Among the upper and lower landing boards 25a and 25b of 24, the lower landing board 25b
Are formed so as to have a slightly larger size than the upper landing board 25a and to extend in the front-rear direction, and the upper and lower landing boards 25a, 25b
Ridges 25c projecting upward at both edges in the front-rear direction
However, the present invention is not limited to this, and the lower landing plate 25b may be formed to have a slightly smaller dimension than the upper landing plate 25a and to have a spread in the front-rear direction.

In this case, ridges 25c projecting upward are formed on both edges of the lower landing plate 25b in the front-rear direction in the same manner as in the above-described embodiment, and the upper landing plate 25b is formed.
Projections 25c projecting downward are formed on both edges in the front-rear direction and located outside projections 25c at both edges of the lower landing plate 25b.

Then, the floor covering 24 is placed on the lower landing plate 25b.
The upper and lower landing boards 25a and 25b are fitted to the upper and lower landing boards 25a and 25b by fitting the upper and lower landing boards 25a through the continuous lower end portions on both sides of the (bag-like body 31). Body
31), the lower end portion which is continuous on both sides is horizontally held, and the floor surface is formed by the ridges 25c of both upper and lower edges of the upper and lower landing plates 25a and 25b which protrude toward each other. Both ends of the horizontal portion at the lower end continuous with both sides of the closing body 24 (bag-like body 31) are sandwiched. Then, in this state, the upper and lower landing boards 25a and 25b are fixed by fixing means (not shown).

With this configuration, the ridges 25c projecting upward from both edges of the lower landing plate 25b are formed.
And both ends of a horizontal portion of a lower end portion continuous with both sides of the floor covering body 24 (bag-like body 31) by ridges 25c protruding downward from both edges of the upper landing plate 25a. When the lower landing plate 25b is landed by the ridges 25c at both edges of the upper landing plate 25a, the floor blocker 24 (the bag-like body 3) is more securely held.
The landing portion 23b of 1) is reliably landed on the floor surface 15 with the contact surface further enlarged.

[0076]

According to the first aspect of the present invention, when the non-combustible sheet is lowered, the landing plate of the floor closing member provided at the lower end of the non-combustible sheet is landed on the floor. When the non-combustible sheet body is lowered, both surfaces of the floor blocker close the contact surface with the floor surface on the front and rear floor surfaces of the landing board due to the weight of the weight of the non-combustible landing body. Each of the floor coverings is deformed into a flattened shape in a larger state, and each of the floor coverings has a landing part before and after the both sides of the floor covering are deformed and each of the floor coverings protrudes in opposite directions. Thus, the space between the lower end of the noncombustible sheet member and the floor can be airtightly closed.

In this case, the floor blocker is pressed from above by the weight of the weight while the floor plate holding the lower end of the floor blocker horizontally is placed on the floor.
Both sides of this floor blocker are folded upward and downward while being spread downward, respectively, and the contact surface with the floor is enlarged on the floors at the front and rear of the landing board. As a result, they are firmly deformed into a shape, and are brought into close contact with each other as landing portions protruding in opposite directions.

Accordingly, the landing board is placed on the floor at the lower end of the floor covering and the floor covering before and after the landing board is deformed on both sides of the floor covering before and after deformation. A floor blockage having a floor portion can reliably and hermetically close the gap between the lower end of the non-combustible sheet member and the floor surface, and has a floor blockage before and after landing on the floor surface When the body is pressed from above by the weight of the weight body, it is possible to reliably prevent a gap from being formed between the floor section and the floor section before and after the floor blocker, and as a whole, The airtightness and fire resistance can be improved, and the outflow of hot air or the like from one side of the shielded portion toward the other side can be prevented, and the diffusion and spread of smoke such as hot air can be prevented.

Further, with the shielded portion airtightly shielded,
When the non-combustible sheet body is lifted by being bent by the non-combustible sheet body being pressed by the pressure due to the non-combustible sheet body being pressed by hot air or the like, the lower end portion of the non-combustible sheet body passes through the weight body at the lower end thereof. A floor covering having a landing section that has landed on the floor is lifted up, and at this time, both sides of the floor covering are bent in two directions up and down to form a flat deformed landing section. By being placed on the floor, the floor blockage body corresponds to the raising of the non-combustible sheet body by raising the folded portion located at the upper part of the folding part of the landing part, It is possible to prevent the landing portion located at the lower portion and landing on the floor from being pulled up.

Therefore, even if the non-combustible sheet is raised by being heated by the hot air or the like and is deflected by receiving the pressure, the non-combustible sheet is closed at the floor closing member having a landing portion corresponding to the raising. There is no gap between the lower end of the body and the floor surface, and the gap therebetween can be reliably airtightly closed.

Further, in a state where the shielded portion is air-tightly shielded, the non-combustible sheet body is heated by the fire heat and thermally contracts upward, and the non-combustible sheet body is shrunk upward according to the heat shrinkage of the non-combustible sheet body. A floor blocker having a landing section that has landed on the floor via the weight body with the sheet body is pulled up. At this time, the floor blocker is insulated by the non-combustible sheet body by hot air or the like. Similarly to the case where the floor portion is bent and raised by receiving the pressure, the folded portion located at the upper part of the folded portion of the landing portion is pulled up and corresponds to the amount of thermal contraction of the non-combustible sheet body. It can be prevented that the landing portion located on the floor surface located at the lower part of the two-fold is pulled up.

Therefore, even if the non-combustible sheet is heated by fire heat and contracts, the non-combustible sheet is closed at the floor closing member having a landing portion corresponding to the heat contraction. There is no gap between the lower end and the floor, and the gap between them can be reliably airtightly closed.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the rod-shaped weight is inserted into the hollow cylindrical portion from the opening at one end of the hollow cylindrical portion to the opening at the other end. By doing so, the rod-shaped weight can be easily accommodated in the hollow cylindrical portion with the insertion projections at both end portions of the rod-shaped weight protruding from both openings of the hollow cylindrical portion. Further, the hollow cylindrical portion is formed by folding the non-combustible sheet body, so that the hollow cylindrical portion can be formed to be non-flammable, and the non-combustible hollow cylindrical portion is accommodated in the hollow cylindrical portion. The rod-shaped weight can be sufficiently protected.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, both sides of the bag-like body are easily deformed into a flat shape by the weight of the weight at the time of landing on the floor surface, so that the bag-like body is mutually deformed. It can project as a landing section in the opposite direction. Further, the bag-like body can be formed to be non-flammable by forming the non-combustible sheet by folding the non-combustible sheet body. The space between the lower end portion of the sheet member and the floor surface can be reliably airtightly closed.

According to the fourth aspect of the present invention, in addition to the effects of the first or third aspect, when the non-combustible sheet body is lowered, the weight board is used to suspend the landing board via the bag-like body. By lowering the landing board, the bag-shaped body can be lowered by tensioning the both sides in a state where the both sides are expanded downward due to the weight of the landing board, and when the landing board is landed on the floor surface. In the state where both sides of the bag-like body are securely folded in two folds while expanding downward, and the contact surface with this floor is enlarged on the floor in front and back of the landing board Can be firmly deformed into a flat shape and can adhere to each other as landing portions protruding in opposite directions.

According to the fifth aspect of the present invention, in addition to the effects of the first or fourth aspect, the lower end portions continuous with both sides of the bag-like body are sandwiched between the upper and lower landing plates to ensure the horizontal shape. When the non-combustible sheet body is lowered, the upper and lower landing boards are lowered while the upper and lower landing boards are suspended via the bag-like body by the weight body, so that the upper and lower landing boards are lowered. By weight, the bag-like body can be lowered by further tensioning the both sides in a state of expanding downward, and the weight of the upper and lower landing plates and the weight allows the non-combustible sheet body to descend smoothly.

According to the sixth aspect of the present invention, in addition to the effects of the first aspect, when the non-combustible sheet is raised, the floor board is raised by the non-flammable sheet, and the non-combustible sheet is set by the floor plate. The opening of the ceiling of the shielded part where the body moves up and down can be reliably closed, the unsightlyness of the opening being opened in a non-fire situation can be prevented, and the appearance can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a part of a refractory screen device showing an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is an explanatory side view showing a flexed state of the noncombustible sheet member.

FIG. 5 is a cross-sectional view showing a state in which an opening of the ceiling is closed by the outer flooring.

FIG. 6 is a front view of a part of the refractory screen device showing the prior art.

FIG. 7 is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Shielded part 3 Insertion opening 6 Opening 7 Ceiling 15 Floor surface 16 Nonflammable sheet body 18 Nonflammable flooring body 19 Weight storage part 20 Insertion protrusion 21 Weight body 22 Both sides part 23 Flooring part 24 Floor blocker 25 Landing board 25a Upper landing board 25b Lower landing board 29 Hollow tubular part 30 Rod weight 31 Bag-shaped body

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A62C 2/06-2/24 E06B 9/17 E06B 9/58

Claims (6)

(57) [Claims] 1. A guide rail which is fixed to both sides of a shielded portion and faces each other and has an insertion opening formed in a vertical direction, and both side ends in the width direction are inserted into the insertion openings of the guide rails on both sides. A non-combustible sheet body that is inserted and raised and lowered to shield the shielded part when descending, and a non-combustible landing body provided at a lower end of the non-combustible sheet body and landing on the floor surface of the shielded part The non-combustible landing body is formed at a lower end portion of the non-combustible sheet body, and the weight-receiving portion in the width direction of the non-combustible sheet body is opened at both side ends of the non-combustible sheet body. And a weight body which is housed in the weight housing portion and has insertion projections protruding from both openings of the weight housing portion at both end portions and inserted into the insertion openings of the guide rails at the both side portions so as to be vertically movable respectively. Formed at the lower end of the weight receiving portion, A hollow floor-closing body which is a floor-closing body which is flattened on both sides thereof by the weight of the weight body at the time of landing on the floor of the floor part and which is protruded toward the opposite direction; And a landing plate provided at the lower end of the floor blocker to hold the lower end of the floor surface blocker horizontally and land on the floor surface of the shielded portion. 2. The weight receiving portion is formed of a hollow cylindrical portion which is formed by folding a non-combustible sheet member and opening at both ends, and the weight member is formed of a bar-shaped weight inserted into the hollow cylindrical portion. The refractory screen device according to claim 1, wherein: 3. The fire-resistant screen device according to claim 1, wherein the floor surface closing body is formed by folding a non-combustible sheet body and having a bag-like body having both sides opened at both side ends. 4. The bag-shaped body has a landing plate at its lower end continuous to both sides of the bag-shaped body and holding the lower end horizontally, and the flooring plate is moved downward when the bag-shaped body is lowered. The refractory screen device according to claim 1 or 3, wherein the bag-shaped body is formed in such a size as to be lowered while being tensioned in a state where both sides of the bag are expanded downward. 5. The fireproof screen device according to claim 1, wherein the landing plate is formed by upper and lower landing plates sandwiching a lower end horizontally on both sides of the bag-like body. . 6. The fire-resistant screen device according to claim 1, wherein the landing plate closes an opening of a ceiling of a shielded portion where the non-combustible sheet body moves up and down when the non-combustible sheet body rises.