JPH11131944A - Screen device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Both ends in the width direction of a sheet body 19 even when the sheet body 19 is fanned by pressure such as hot air when the shielded portion 2 is shielded by a sheet body 19 and a weight body 22. Provided is a screen device that can surely prevent a part from coming out of the insertion opening 3 of the guide rail 1 and can improve necessary smoke shielding performance and fire resistance in the case of a fireproof screen. SOLUTION: Insertion holes 3 fixed to both sides of a shielded portion 2
A guide rail 1 having a pair of guide rails 1 and wound around a take-up drum 11 rotatably provided above between the two guide rails 1 and lowered along the insertion opening 3 of the both guide rails 1 during rewinding to form a shielded portion 2
And a weight body 22 provided at the lower end of the sheet body 19 and landing on the floor surface 18. The sheet body 19 is
Both ends in the width direction are formed as insertion portions 20 protruding into the guide rails 1 by being inserted from the insertion holes 3 of the both guide rails 1, and are located in the both guide rails 1 and are inserted into both the insertion portions 20. Each having a retaining body 28 having a width larger than the width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen device, for example, to shield a predetermined position in a building as a fire prevention section to prevent the spread and spread of smoke in the event of a fire. The present invention relates to a device for shielding to prevent wind and dust from entering a building.

[0002]

2. Description of the Related Art Heretofore, as this type of screen device, for example, a fire-resistant screen device that shields a predetermined position in a building as a fire protection compartment has been proposed. This refractory screen device includes, for example, a guide rail which is fixed to both sides of a predetermined position in a building and has an insertion opening formed in the vertical direction so as to face each other, and a guide rail on both sides of the guide rail. A non-combustible sheet body which is provided so as to be movable up and down by inserting both end portions in the direction, and shields between the guide rails on the both side portions, between the guide rails on the both side portions attached to the lower end portion of the non-combustible sheet body There has been proposed a configuration including a weight body that is placed on the floor surface.

[0003]

In the above refractory screen device, the guide rails on both sides are shielded by lowering the non-combustible sheet body and landing the weight on the floor surface. In a fire in which the shielded portion is shielded by the incombustible sheet and the weight, when the incombustible sheet is pushed and pressed by hot air or the like, the noncombustible sheet is bent by the pressure, and the incombustible sheet is bent. There is a problem that both ends in the width direction of the body are easily released from the insertion openings of the guide rails on both sides, and it is not possible to satisfy the smoke shielding performance and fire resistance required for the fireproof screen.

Therefore, a reinforcing bar in the width direction of the non-combustible sheet is attached to the middle of the non-combustible sheet, and both ends of the reinforcing bar are directed outward from both lateral ends of the non-combustible sheet. A configuration is conceivable in which both the projections are inserted into the insertion openings of the guide rails on both sides as insertion projections.

However, according to this configuration, it is necessary to greatly open the insertion opening of the guide rail according to the thickness of both insertion projections of the reinforcing bar, and in the event of a fire that shields the shielded portion, the non-combustible sheet is heated by hot air or the like. When the body is pushed and pressed, when the non-combustible sheet body is bent by the pressure, both the insertion projections of the reinforcing bar easily come out of the insertion opening of the guide rail, and do not have both the insertion projections of the reinforcing bar. There is a problem that hot air or the like easily flows out of a gap formed between both ends in the width direction of the non-combustible sheet member at the location and the insertion opening of the guide rail.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and when the shielded portion is shielded by a sheet and a weight, even if the sheet is fanned by the pressure of hot air or the like, the sheet can be lifted. It is possible to reliably prevent both ends in the width direction of the body from coming out of the insertion holes of the guide rails on both sides, for example,
It is an object of the present invention to provide a screen device capable of improving the required smoke shielding performance and fire resistance performance in the case of a fireproof screen.

[0007]

According to a first aspect of the present invention, there is provided a screen device, comprising: a guide rail fixed to both sides of a shielded portion and having insertion openings formed in the vertical direction so as to face each other;
A take-up drum rotatably provided above between the guide rails on both sides, and both sides in the width direction at the insertion openings of the guide rails on the both sides at the time of rewinding and rewinding around the take-up drum. A sheet body that is lowered in a state where each end is inserted and shields the shielded part, and a weight body provided at a lower end of the sheet body and landing on the floor surface of the shielded part, The sheet body is formed as an insertion portion that inserts both end portions in the width direction from the insertion openings of the guide rails on the both side portions and protrudes into the respective guide rails, and is located in the guide rails on the both side portions. The two insertion portions each have a retaining body larger than the width of the insertion opening.

[0008] When the sheet body and the weight body cover the shielded portion and the sheet body is blown by the pressure of hot air or the like, the insertion portions at both end portions in the width direction of the sheet body. The stopper provided in the guide rail comes into contact with the opening edge of the insertion opening from the inside of the guide rail, and the insertion portion at both ends in the width direction of the sheet body comes out of the insertion opening of the guide rail on both sides by the stopper. Is reliably prevented.

Further, since the retaining member is located in the guide rail and is provided at the insertion portion at both end portions in the width direction of the sheet member, the retaining member is inserted into the guide rail when the sheet member descends. Since it descends in the guide rail away from the mouth, even if this stopper is provided, the guide rail insertion opening does not need to be particularly large, and both ends in the width direction of the sheet body and the guide rail insertion opening do not need to be opened. It becomes difficult for hot air or the like to flow out of the space.

Therefore, the airtightness is improved as a whole,
For example, in the case of a fireproof screen, the required smoke barrier performance and fireproof performance are improved.

According to a second aspect of the present invention, in the screen device of the first aspect, the retaining members are provided at a plurality of positions at predetermined intervals along both insertion portions in the width direction of the sheet member. Things.

If the sheet is blocked by the pressure of hot air or the like when the portion to be shielded is shielded by the sheet and the weight, the insertion portions at both ends in the width direction of the sheet are provided. The stoppers at a plurality of locations provided in the guide rail abut against the opening edge of the insertion opening from the inside of the guide rail, respectively. It is more reliably prevented that the guide rail comes out of the insertion opening.

The plurality of retaining members are located in the guide rails and are provided along the insertion portions at both end portions in the width direction of the sheet member. When the body descends, it descends in the guide rail away from the guide rail insertion opening, so even if this plurality of stoppers are provided, there is no need to open the guide rail insertion opening particularly large, and the width direction of the sheet body Hot air or the like hardly flows out between the two side ends of the guide rail and the insertion opening of the guide rail.

Therefore, the airtightness is further improved as a whole, and, for example, in the case of a fireproof screen, the required smoke shielding performance and fireproof performance are further improved.

According to a third aspect of the present invention, in the screen device of the first or second aspect, the retaining body is formed by retaining pins protruding from the surface of the sheet body.

The insertion pins at both ends in the width direction of the sheet body are reliably prevented from falling out of the insertion openings of the guide rails at both sides by the retaining pins. In addition, since this retaining pin is projected from the surface of the sheet body, when the sheet body is fueled by pressure such as hot air,
The retaining pin reliably contacts the opening edge of the insertion port from inside the guide rail, and the retaining pin is reliably prevented from falling out of the insertion port.

According to a fourth aspect of the present invention, in the screen device of the third aspect, the retaining pin is provided on a sheet piece protruding outward from outer edges of both insertion portions in the width direction of the sheet member. To provide.

When the sheet is wound, the retaining pins are wound so as to protrude outward from the outer edges of both insertion portions in the width direction of the sheet via the sheet piece. The retaining pin is wound without being wound between the two insertion portions of the sheet body, and therefore, the sheet body is wound neatly without the bulking or collapse of the winding portion that has taken up the both insertion portions by each retaining pin. Is done.

[0019]

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 vertical guide rails which are vertically fixed to opposing side walls of the shielded portion 2, respectively. 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. The insertion opening 3 is formed in each of the inner plate portions 4 of the guide rail 1, and has a vertical guide piece 5 formed opposite to an opening edge thereof, and the opposed guide piece 5 has an upper end. The portion has an inclined piece 5a that expands and inclines upward, and a guide port 5b that opens upward in communication with the insertion port 3 is formed by the opposing incline piece 5a.

A screen box 7 in which the upper ends of the left and right guide rails 1 are inserted is fixed to an upper side wall portion 6 such as an upper frame of the shielded portion 2. The screen box 7 has both side plates 8 having brackets (not shown) fixed above and opposed to the left and right guide rails 1 and a bottom plate 9 fixed between lower ends of the both side plates 8. The bottom plate 9 is provided with a left-right guide opening 10 which is opened to communicate with the insertion openings 3 of the left and right guide rails 1 respectively.

A take-up shaft 12 having a take-up drum 11 in the left-right direction is rotatably mounted between the brackets of the left and right side plates 8, and one end of the take-up shaft 12 has this take-up shaft. A rotating wheel 13 for driving and rotating the wheel 12 is fixed. A forward / reverse rotatable motor 14 is fixed in the screen box 7, and a drive wheel 16 is fixed to an output shaft 15 of the motor 14 at a position facing the rotating wheel 13.
An endless revolving body 17 is suspended between the reciprocating member 13 and 13.

The motor 14 is operated by an output signal such as a fire signal from control means (not shown). The output of the motor 14 is decelerated and transmitted to the winding shaft 12. Further, the motor 14 is automatically stopped at a predetermined number of rotations set in accordance with a landing position where a weight body to be described later land on the floor surface 18 of the shielded portion 2. ing. The operation of the motor 14 is stopped by a stop signal from the control means, which receives a detection signal detected by a weight body described later landing on the floor surface 18 of the shielded portion 2. You may.

Next, the upper end portion of a vertically movable sheet member 19 for shielding the shielded portion 2 is fixed to the winding drum 11 and is wound so as to be rewound freely. The ends are inserted from the insertion openings 3 of the left and right guide rails 1 and formed as insertion portions 20 protruding into the respective guide rails 1 so as to be able to move up and down. Then, it is lowered in a state where the insertion portions 20 at both ends in the width direction are inserted into the respective guide rails 1 to shield the shielded portions 2.

At the lower end of the sheet member 19, there are provided weight bodies 22 formed as insertion portions 21 having both ends inserted into the insertion openings 3 of the left and right guide rails 1 so as to be vertically movable. The weight body 22 is adapted to land on the floor surface 18 of the shielded portion 2 when the sheet body 19 is lowered. The sheet member 19 is formed of a non-combustible sheet member 23.

The noncombustible sheet body 23 is formed as a single sheet of noncombustible fabric made of, for example, glass cloth, silica cloth, or the like, or a plurality of noncombustible fabrics integrally sewn together. I have. The weight body 22 is formed of a non-combustible weight body 24. Hereinafter, the sheet body 19 will be described as a non-combustible sheet body 23, and the weight body 22 will be described as a non-combustible weight body 24.

The non-combustible weight body 24 is folded at the lower end of the non-combustible sheet body 23, and the upper end of the folded piece 25 is overlapped with the non-combustible sheet body 23 to be integrally fixed to each other. A hollow bag-like body 26 formed by opening a portion, and a non-combustible flat plate-like body 27 inserted and housed in the bag-like body 26 through an opening at one end of the bag-like body 26. , Is configured.

The upper end of the folded piece 25 forming the bag-like body 26 is integrally fixed to the non-combustible sheet 23 with non-combustible sewing thread or the like. In addition, the bag-like body
The non-combustible weight 24 is formed into a relatively thin flat plate by accommodating the flat plate-shaped body 27 in 26, and the insertion portions 21 at both ends of the non-combustible weight 24 are inserted. The insertion openings 3 of the left and right guide rails 1 are formed by the flat plate-shaped insertion portions.
Openings are formed at relatively narrow intervals in accordance with the thickness of 21.

Next, a retaining member larger than the diameter of the insertion opening 3 of the guide rail 1 is inserted into the insertion portions 20 at both ends in the width direction of the non-combustible sheet member 23 located in the left and right guide rails 1. 28 are attached together. The retaining members 28 are provided at a plurality of locations on the same line at predetermined intervals along the insertion portions 20 at both end portions.

The retaining member 28 is a rectangular non-combustible sheet piece 29 which abuts on both surfaces of the insertion portion 20 at predetermined positions.
And a retaining pin in a direction intersecting with the noncombustible sheet body 23 which is attached through the insertion portion 20 and the both noncombustible sheet pieces 29.
30.

Then, the non-combustible sheet pieces 29 are respectively brought into contact with both surfaces of the insertion portion 20 at predetermined positions, and the non-combustible sheet pieces 29 on both sides of the insertion portion 20 and the two non-combustible sewing threads 31 are attached. And sew together.

Further, the retaining pin 30 is inserted through the insertion portion 20 and the non-combustible sheet pieces 29 on both surfaces of the insertion portion 20, and the ejection protrudes outward from the non-combustible sheet pieces 29 on both surfaces. A stopper 33 such as a metal fitting is fitted and fixed to the retaining projection 32 on both sides of the stopper pin 30, and the non-combustible sheet pieces 29 on both sides are clamped by the stoppers 33 on both sides. As a result, the retaining pin 30 is integrally attached to the insertion portion 20 and the non-combustible sheet pieces 29 on both sides of the insertion portion 20.

The retaining projections 32 on both sides of the retaining pin 30 protrude from both sides of the non-combustible sheet member 23 and protrude in the front-rear direction larger than the width of the insertion opening 3 of the guide rail 1. .

The retaining protrusions on both sides of the retaining pin 30 projecting from the non-combustible sheet pieces 29 on both surfaces of the insertion portion 20.
32 are located in the left and right guide rails 1 and abut on the opening edges of the insertion openings 3 of the guide rails 1, that is, the protruding ends of the opposing guide pieces 5, so that the two insertion portions 20 of the non-combustible sheet 23 are Are prevented from falling out of the respective insertion openings 3.

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

In the event of a fire where the shielded portion 2 is shielded by the non-combustible sheet 23 and the non-combustible weight 24, the motor is activated by a fire signal.
When the motor 14 is operated, the take-up shaft 12 is driven to rotate in the direction of rewinding the non-combustible sheet 23 by the output from the motor 14, and the non-combustible sheet 23
Are sequentially rewound.

When the non-combustible sheet 23 is lowered, the non-combustible sheet 23 is inserted into the insertion portions 20 at both ends in the width direction along the insertion openings 3 of the left and right guide rails 1.
In addition, the retaining members 28 of the two insertion portions 20 are lowered in a state where they are located in the respective guide rails 1, and the non-combustible weight body 24 is configured such that the insertion portions 21 at both ends are formed by the left and right guide rails 1. The weight of the noncombustible weight body 24 is smoothly lowered along the insertion opening 3.

Then, the motor 14 rotates at a set predetermined number of revolutions and stops, and the non-combustible weight body 24 is landed on the floor surface 18 of the shielded portion 2. Body 24
The entire surface of the lower surface is air-tightly placed on the floor surface 18, and the non-combustible weight body 24 and the non-combustible sheet body 23 reliably shield the shielded portion 2.

Therefore, the lower surface of the non-combustible weight body 24 and the floor surface
The gap between the lower surface of the non-combustible weight body 24 and the floor 18 is hermetically closed without opening a gap between the non-combustible weight body and the non-combustible weight body.
The shielded portion 2 is entirely airtightly shielded by the non-combustible sheet member 24 and the non-combustible sheet member 23.

Next, when the shielded portion 2 is shielded by the non-combustible sheet 23 and the non-combustible weight 24, the non-combustible sheet
In the case where 23 is fanned by the pressure of hot air or the like, each retaining member 28 at each position provided in the insertion portion 20 at both ends in the width direction of the noncombustible sheet member 23, that is, the retaining pin 30 The retaining projections 32 on both sides are inserted from the inside of each guide rail 1
Of the non-combustible sheet 23 is inserted into the guide rails 1 on both sides of the non-combustible sheet member 23 by the retaining pins 30. From the insertion opening 3 is reliably prevented.

The retaining pins 30 of the retaining members 28 are located in the guide rails 1 and are provided at the insertion portions 20 at both ends in the width direction of the noncombustible sheet member 23. Each retaining pin 30 descends in the guide rail 1 away from the insertion opening 3 of the guide rail 1 when the non-combustible sheet member 23 descends. Without the need for a particularly large opening
Hot air or the like does not easily flow out from between the insertion portions 20 at both ends in the width direction of the noncombustible sheet member 23 and the insertion opening 3 of the guide rail 1.

The retaining pins 30 of the retaining member 28 are provided at a plurality of locations at predetermined intervals along the insertion portions 20 at both ends in the width direction of the noncombustible sheet member 23. The insertion pins 20 at both ends in the width direction of the noncombustible sheet member 23 are more reliably prevented from coming out of the insertion openings 3 of the guide rails 1 at both sides by the retaining pins 30.

Therefore, the airtightness is improved as a whole,
As a fireproof screen in which the shielded portion 2 is shielded by the noncombustible sheet 23 and the noncombustible weight 24, the airtightness and fireproof performance such as smoke shielding are sufficiently improved, and the spread of smoke and the spread of fire during a fire can be prevented.

Next, in a state where the shielded portion 2 is shielded by the sheet body 19 and the weight body 22, the sheet body is
Even if 19 is pushed and pressed, as in the case of the fire-resistant screen, the insertion portions 20 at both end portions in the width direction of the non-combustible sheet body 23 are respectively inserted by the retaining pins 30 in the guide rails 1 on both side portions. Is reliably prevented from falling out of the insertion opening 3 of the building, and thus the airtight performance is sufficiently improved as a screen shutter in which the shielded portion 2 at a predetermined position in the building is shielded by the sheet member 19 and the weight body 22. Wind and dust are prevented from entering the building.

As described above, when the shielded portion 2 is shielded by the non-combustible sheet member 23 and the non-combustible weight body 24, the air-tightness performance such as smoke shielding and the fire resistance performance are sufficiently improved as a fire-resistant screen. Further, the shielded portion 2 is formed by the sheet body 19 and the weight body 22.
When the screen shutter is shielded, the airtight performance is sufficiently improved as a screen shutter for preventing wind and dust from entering the building.

Next, in the above embodiment, each retaining body
Although the description has been given of the case where the two non-combustible sheet pieces 29 of 28 are integrally attached to the insertion portion 20 in a state in which the two non-combustible sheet pieces 29 coincide with the outer edges of the insertion portion 20 at both ends in the width direction of the non-combustible sheet body 23, Not limited to this, the two non-combustible sheet pieces 29 as sheet pieces are
For example, as shown in FIG. 5, they are each formed in a horizontally long rectangular shape having the same shape, and the inner portion 29a is integrally sewn to the insertion portion 20 with the sewing thread 31 in the same manner as in the above-described embodiment. An outer portion 29b protruding outward from an outer edge of the insertion portion 20
Alternatively, the retaining pin 30 of the retaining body 28 may be integrally fixed as in the case of the above embodiment.

In this case, both the retaining projections of the retaining pins 30 are located on the inner side of the front and rear side plate portions 1a of the both guide rails 1 and located between the guide piece 5 and the retaining pins 30. It is preferable that the vertical stopper projections 34 for retaining the stopper 32 are integrally fixed.
The opposing retaining protrusions 34 may be formed of an angle member 35 having an L-shaped cross section in the vertical direction fixed along the front and rear side plates 1a of both guide rails 1.

With this configuration, when the non-combustible sheet body 23 is wound, the retaining pin 30 is attached to the non-combustible sheet piece 29.
The non-combustible sheet 23 is wound in a state of protruding outward from the outer edges of both insertion portions 20 in the width direction of the non-combustible sheet 23, and the non-combustible sheet 23 Both insertion parts
Therefore, the non-combustible sheet member 23 can be wound neatly without the bulky or collapsing of the take-up portion, which has taken up both the insertion portions 20, by the respective retaining pins 30.

In a state where the shielded portion 2 is shielded by the non-combustible sheet 23 (sheet 19) and the non-combustible weight 24 (weight 22), the non-combustible is caused by pressure (outside air) of hot air or the like. Even if the conductive sheet body 23 is pushed and pressed, both the retaining projections 32 of each retaining pin 30 abut against the opposite retaining projections 34 facing each other and are prevented from being removed, and the respective retaining pins 30 As a result, the insertion portions 20 at both end portions in the width direction of the noncombustible sheet member 23 are reliably prevented from coming out of the insertion openings 3 of the guide rails 1 at both side portions.

Therefore, the fireproof screen in which the shielded portion 2 is shielded by the nonflammable sheet 23 and the nonflammable weight 24 (a screen shutter that shields the shielded portion 2 at a predetermined position in the building) is sufficient. The airtightness and fire resistance are improved, and the spread of smoke and the spread of fire (invasion of wind and dust into the building) during a fire are prevented.

The front and rear side plate portions 1a of both guide rails 1 are also provided.
By having opposing retaining protrusions 34 formed of angle members 35 having an L-shaped cross section in the vertical direction along the inside, the opposite insertion preventing protrusions 34 allow the two insertion portions of the noncombustible sheet body 23 to be inserted. The internal space of both guide rails 1 is reduced through 20,
In the two guide rails 1, hot air (outside air) or the like is further prevented from flowing from one surface of the two insertion portions 20 of the noncombustible sheet member 23 to the other surface.

The front and rear side plate portions 1a of both guide rails 1 are also provided.
By fixing the angle member 35 therein, the angle member 35 reinforces the front and rear side plate portions 1a of the both guide rails 1, and this is effective when both the guide rails 1 have a height in the vertical direction.

In each of the above embodiments, each retaining body
Reference numeral 28 denotes two non-combustible sheet pieces 29 abutting on both sides of the insertion portion 20.
However, the present invention is not limited to this, and one non-combustible sheet piece 29 may be used.

Further, in each of the above-described embodiments, each of the retaining members 28 is configured such that two non-combustible sheet pieces 29 abut on both surfaces of the insertion portion 20 and one non-combustible sheet piece on one surface of the insertion portion 20. 29
However, the present invention is not limited to this, and each retaining body 28, that is, the retaining pin 30 may be a non-combustible sheet piece.
For example, as shown in FIG. 6, without penetrating the insertion portion 20, the retaining pin 30 is attached to the locking member 33 from both sides of the insertion portion 20 in the same manner as in the above-described embodiments without using the 29. Alternatively, it may be fixed to the insertion section 20 by inserting.

In each of the above embodiments, the case where both the retaining projections 32 of the retaining pin 30 protrude from both sides of the non-combustible sheet member 23 has been described. However, the present invention is not limited to this. The protrusion 32 may project from one side of the noncombustible sheet 23.

[0056]

According to the first aspect of the present invention, the sheet body is formed as an insertion portion that is inserted into the guide rail insertion openings on both sides in the width direction and protrudes into the respective guide rails. Since each of the two insertion portions has a retaining member larger than the width of the insertion opening, which is located in the guide rail on both sides, the sheet is protected when the covered portion is shielded by the sheet and the weight. Even if the body is lifted by the pressure of hot air or the like, the stoppers of both insertion portions at both side edges in the width direction of the sheet abut against the opening edges of the insertion opening from inside the respective guide rails, and The stopper can reliably prevent the insertion portions at both ends in the width direction of the sheet body from coming out of the insertion holes of the guide rails on both sides.For example, in the case of a fireproof screen, the necessary smoke shielding performance and fireproof performance are required. Can improve It is possible to provide a lean system.

According to the second aspect of the invention, in addition to the effects of the first aspect, the retaining members are provided at a plurality of locations at predetermined intervals along both insertion portions in the width direction of the sheet member. Therefore, even when the shielded portion is shielded by the sheet body and the weight body, the sheet body is propelled by the pressure of hot air or the like, and even if the sheet body is fanned by the pressure of the hot air or the like, a plurality of the sheet members are provided at both insertion portions at both side ends in the width direction. The stoppers at the locations abut against the opening edges of the insertion openings from inside the guide rails, and the insertion portions at both ends in the width direction of the sheet are inserted into the guide rails at both sides by the stoppers at the multiple locations. Getting out of the mouth can be prevented more reliably.

Further, since the plurality of retaining members are located in the guide rails and are provided along the insertion portions at both ends in the width direction of the sheet member, the plurality of retaining members are moved downward of the sheet member. Sometimes the guide rail is lowered in the guide rail away from the insertion opening of the guide rail. Therefore, even if the plurality of stoppers are provided, it is not necessary to open the insertion opening of the guide rail particularly large, and both ends in the width direction of the sheet body. The insertion opening can be formed in a state where hot air or the like hardly flows out from between the portion and the insertion opening of the guide rail.

Accordingly, the airtightness is further improved as a whole, and for example, in the case of a fireproof screen, the required smoke shielding performance and fireproof performance can be further improved.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the retaining member is formed by a retaining pin which projects in a direction protruding from the surface of the sheet member. Pins can reliably prevent the insertion portions at both ends in the width direction of the sheet body from coming out of the insertion holes of the guide rails on both sides. In this case, the retaining pins are projected from the surface of the sheet body. Therefore, if the sheet body is lifted by the pressure of hot air or the like, it is necessary to ensure that the retaining pins come into contact with the opening edges of the insertion port from inside the guide rail, and that the retaining pins come out of the insertion port. The structure is simple because the prevention body can be surely prevented and the retaining body is formed by the retaining pin.

According to the fourth aspect of the present invention, in addition to the effect of the third aspect of the present invention, in addition to the effect of the third aspect of the present invention, the retaining pin has a sheet piece protruding outward from outer edges of both insertion portions in the width direction of the sheet. When the sheet body is wound, the retaining pins can be wound with the retaining pins protruding outward from the outer edges of both insertion portions in the width direction of the sheet body. Can be wound without getting caught between the insertion portions of
The sheet body can be rolled up neatly without the bulking up or the collapse of the winding section, which has taken up both insertion sections, by each retaining pin.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a part of a screen device according to an embodiment of the present invention.

FIG. 2 is a front view of the same screen device.

FIG. 3 is a side view of the same.

FIG. 4 is a cross-sectional view of one of the guide rails;

FIG. 5 is a front view of a retaining body according to another embodiment.

FIG. 6 is a cross-sectional view of one of the guide rails;

FIG. 7 is a front view of a retaining body according to still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Shielding part 3 Insertion opening 18 Floor surface 19 Sheet body 20 Insertion part 22 Weight body 28 Retainer 29 Sheet piece 30 Retainer pin

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FIE06B 9/17 H 9/20 B

Claims (4)

[Claims] 1. A guide rail fixed to both sides of a shielded portion and opposed to each other and formed with an insertion opening in a vertical direction, and a winding rotatably provided above and between the guide rails on both sides. The take-up drum and the take-up drum are wound so as to be able to be rewound freely. At the time of rewind, the lower end is shielded by inserting both ends in the width direction into the insertion openings of the guide rails on the both sides to cover the shielded portion. A sheet body, and a weight body provided at a lower end portion of the sheet body and landing on the floor surface of the shielded portion, wherein the sheet body guides both side edges in the width direction of the both sides. A stopper is inserted into the guide rail on each side and inserted into the guide rail on each side to form a protrusion that is larger than the width of the insertion hole. Having, characterized by Lean apparatus. 2. The screen device according to claim 1, wherein the retaining members are provided at a plurality of positions at predetermined intervals along both insertion portions in the width direction of the sheet member. 3. The screen device according to claim 1, wherein the retaining member is formed by a retaining pin protruding from a surface of the sheet member. 4. The screen device according to claim 3, wherein the retaining pin is provided on a sheet piece protruding outward from outer edges of both insertion portions in the width direction of the sheet member.