JPH11131943A - Screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a slip-out of the end parts on two sides of a sheet substance from guide rails when an air pressure, such as hot blast, is exerted on the sheet substance to shield a part to be shielded formed from a plurality of beltlike sheets. SOLUTION: A screen device comprises guide rails 1 which are fixed facing each other on the two side parts of a part 2 to be shielded and in which insertion ports positioned facing each other are formed; an elevatable sheet substance 14 having end parts on the two sides in the direction of width inserted in insertion ports 3 of the guide rails 1 to shield the part 2 to be shielded; and a weight body 23 seated on a floor 2a of the part 2 to be shielded. The sheet substance 14 is formed from a plurality of beltlike sheets 15. In the beltlike sheets 15, the side end parts in the direction of width of the adjoining beltlike sheets 15 are overlapped with each other with overlapping margins 17 and 19 and overlapping margins 18 and 21 of width kept in an overlapped state even when the beltlike sheet 15 is brought into a slacking state. The two end parts on both sides of the beltlike sheets 15 on both sides, forming insertion edge parts 20 and 22, are inserted in an insertion port 3 of the guide rail 1 and the weight body 23 is mounted on the lower end part of the beltlike sheet 15.

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, a device for preventing the spread of smoke and the spread of fire in a fire.

[0002]

2. Description of the Related Art Conventionally, as this type of screen device, for example, there is a fire-resistant screen device for preventing the spread of smoke and the spread of fire in a fire. This refractory screen device
For example, as shown in FIG. 5, a guide rail b which is fixed to both sides and is opposed to each other and has an insertion opening a formed in a vertical direction, and an insertion opening a of the guide rail b on both sides is provided with a widthwise direction. A single-piece fireproof sheet d which is inserted into both ends to be able to move up and down on the winding shaft c and shields between the guide rails b on the both sides, and this fireproof sheet d is attached to the lower end of the fireproof sheet d. When the sheet d shields between the guide rails b on both sides, a weight body e is placed on the floor between the guide rails b on both sides.

[0003]

In the refractory screen device shown in FIG. 5, the refractory sheet d is made up of a single refractory sheet d in a state where the guide rails b on both sides are shielded from each other. If you do not receive the wind pressure of
As shown in FIG. 6, the refractory sheet d can keep the guide rails b on both sides shielded by the refractory sheet d without bending.

However, when the fire-resistant sheet d receives wind pressure such as hot air at the time of a fire, the wind pressure is concentrated at the center of the fire-resistant sheet d, as shown in FIG. Along with the maximum deflection, the intermediate portion between the both ends of the refractory sheet d comes out of the insertion opening a of the guide rail b on both sides, and the intermediate portion and both sides of the both ends of the refractory sheet d. And the guide rails b are opened, and there is a problem that hot air or the like may flow out from the openings f at both end portions.

[0005] Therefore, the swallowing allowance of the guide rails b on both sides is made large so that both ends of the refractory sheet d can be inserted deeply, or both ends of the refractory sheet d are pulled out of the guide rails b on both sides. Although it is necessary to provide a retaining mechanism for stopping, there is a problem in that the configuration of the guide rails b on both sides becomes large, the configuration becomes complicated, and the cost tends to increase as a whole.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a plurality of belt-like sheets in which a sheet member for shielding a portion to be shielded is overlapped with each other with a side edge in the width direction as an overlap margin. When formed by sheets, when receiving the wind pressure such as hot air, the adjacent strip-shaped sheets are bent while overlapping, and the overlap margin slides and absorbs the wind pressure, and both side ends of the sheet body are guide rails on both sides. It is therefore an object of the present invention to provide a screen device having a high airtightness in a sheet body without a special configuration of a guide rail.

[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 sheet body that is inserted into the guide rail insertion openings on both sides to insert both side ends in the width direction and that is vertically movable along the vertical direction to shield the shielded portion; And a weight body that lands on the floor surface of the shielded part when shielding the shielded part. The sheet body is arranged side by side along the width direction so as to shield the shielded part and can be moved up and down. Are formed by a plurality of belt-shaped sheets provided in the plurality of belt-shaped sheets, and the plurality of belt-shaped sheets maintain the side edges of the adjacent belt-shaped sheets overlapping each other even when the belt-shaped sheets are bent. The outer edges of the strips located on both sides are inserted into the insertion openings of the guide rails on both sides as insertion edges, and the lower ends of the plurality of strips are overlapped. Attaching the weight body to
Things.

When the shielded portion is to be shielded, a plurality of strip-shaped sheets are respectively lowered simultaneously. At this time, both insertion edges of the strip-shaped sheets located on both sides are respectively guided by guide rails on both sides. The sheet body composed of a plurality of band-shaped sheets is smoothly lowered along the insertion opening of the body and by the weight of the weight body.

Further, when the weight body is placed on the floor surface of the shielded portion, the shielded portion is shielded by the sheet body composed of the plurality of band-shaped sheets. In the belt-shaped sheet, the overlapping margins of the side edges of the adjacent belt-shaped sheets in the width direction are maintained so as to overlap each other, and the shielded portion is reliably shielded by the sheet body composed of the plurality of belt-shaped sheets.

In a state where the shielded portion is shielded by the sheet member, when the sheet member receives wind pressure such as hot air or cold air, the adjacent belt-shaped sheets are bent while being overlapped with each other while the adjacent strip-shaped sheets slide. While absorbing wind pressure, the overlapping margins of the widthwise side edges of the adjacent belt-shaped sheets are maintained in a state where they overlap each other, and both side edges of the sheet body can slip out of the guide rail insertion openings on both sides. Is prevented.

Therefore, even if the sheet is blown by the wind pressure of warm air, cold air, or the like in a state where the shielded portion is shielded by the sheet having the weight attached to the lower end, the sheet is affected by the sheet. As a result, the shielded portion is completely shielded completely, and outflow of gas such as hot air or cold air from one side of the shielded portion toward the other side is prevented.

According to a second aspect of the present invention, in the screen device of the first aspect, the weight is integrally formed with a length to be attached along lower ends of the plurality of strip-shaped sheets. It has an insertion part inserted into the insertion opening of the guide rail on both sides.

Since the insertion portions at both ends of the weight body are inserted into the insertion holes of the guide rails on both sides,
When shielding the shielded portion, a sheet body including a plurality of band-shaped sheets is smoothly lowered by the weight body.

In a state where the shielded portion is shielded by the sheet body and the weight body, when the sheet body receives a wind pressure such as a hot air or a cold air, a plurality of belt-like sheets are formed by the weight body. The lower ends of the strips are securely supported, and the lower ends of the plurality of strips are not only bent and separated by being swung, but also the lower ends of the insertion ends of the strips located on both sides are inserted into the guide rails. Getting out of the mouth is prevented.

According to a third aspect of the present invention, there is provided the screen device according to the first or second aspect, wherein the plurality of strip-shaped sheets are each formed of a flame-retardant fire-resistant sheet.
The weight is formed of a flame-retardant weight, and the flame-retardant weight is attached to lower end portions of the plurality of flame-retardant refractory sheets.

When shielding the shielded portion, a plurality of flame-retardant refractory sheets are simultaneously lowered, respectively. At this time, both insertion edges of the flame-retardant refractory sheets located on both sides are in contact with each other. The sheet body composed of a plurality of flame-retardant fire-resistant sheets is smoothly lowered along the insertion openings of the guide rails on both sides and by the weight of the flame-retardant weight body.

Further, when the flame-retardant weight is placed on the floor of the shielded portion, the shielded portion is shielded by the sheet made of the plurality of flame-retardant fire-resistant sheets. On this occasion,
The plurality of flame-retardant fire-resistant sheets are maintained in a state where the overlapping margins of the side ends in the width direction of the adjacent flame-retardant fire-resistant sheets are overlapped with each other, and are covered with a sheet body composed of the plurality of flame-retardant fire-resistant sheets. The shielding portion is reliably shielded.

In a state where the shielded portion is shielded by the sheet member, when the sheet member receives wind pressure such as hot air from a fire, the adjacent flame-retardant refractory sheets are bent and overlap each other. The overlap margin slides and absorbs the wind pressure of hot air, etc., while maintaining the overlap margin at the side edges in the width direction of adjacent belt-shaped sheets, and the both ends of the sheet body are guide rails on both sides. From the insertion slot is prevented.

Therefore, even if the sheet body is blown by the wind pressure of hot air or the like in a state where the shielded portion is shielded by the sheet body having the flame-retardant weight body attached to the lower end, the sheet body is not moved by the sheet body. As a result, the shielded portion is entirely shielded, and the outflow of hot air or the like during a fire from one side to the other side of the shielded portion is prevented, and the spread and spread of smoke during a fire are prevented.

[0020]

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, and the opposite insertion opening 3 is formed by front and rear vertical guide pieces 3a and 3b provided in parallel with each other. The shielded portion 2 means an opening such as an entrance, an emergency exit, and a passage.

A screen box 5 into which the upper ends of the left and right guide rails 1 are inserted is fixed to an upper side wall portion 4 such as an upper frame of the shielded portion 2, and the screen box 5 is attached to a lower end portion. Left and right guide ports 6 are formed so as to communicate with the insertion ports 3 of the left and right guide rails 1, respectively.

A winding shaft 8 having a left-right winding drum 7 is rotatably mounted in the screen box 5, and one end of the winding shaft 8 rotates the winding shaft 8. The rotating wheel 9 to be driven is fixed. A forward / reverse rotatable motor 10 is fixed in the screen box 5, and a drive wheel 12 is fixed to an output shaft 11 of the motor 10 at a position facing the rotating wheel 9. An endless rotating body 13 is suspended between the rotating wheel 9 and the rotating wheel 9.

The motor 10 is operated by an output signal such as a fire signal from control means (not shown), and the output of the motor 10 is transmitted to the winding shaft 8 at a reduced speed. The operation of the motor 10 is stopped by a stop signal from the control unit, which receives a detection signal that is detected when a weight body to be described later is landed on the floor surface 2a of the shielded portion 2. Has become.

Next, the take-up drum 7 is provided with a sheet member 14 that can move up and down in the vertical direction to shield the shielded portion 2.
One end (upper end) of the sheet member 14 is fixed and wound, and the sheet body 14 is inserted into the insertion openings 3 of the left and right guide rails 1 by unwinding the winding drum 7 so that both side ends in the width direction are inserted. It is lowered so as to shield the shielded portion 2.

A plurality of strip-shaped sheets 14 are arranged side by side in the width direction so as to shield the shielded portion 2 and are wound around the winding drum 7 with its upper end fixed.
Each of the plurality of strip-shaped sheets 15 is formed of a strip-shaped flame-retardant refractory sheet 16.

The plurality of flame-retardant fire-resistant sheets 16 include an intermediate flame-retardant fire-resistant sheet 16a located at an intermediate portion of the shielded portion 2, and both sides of the intermediate flame-retardant fire-resistant sheet 16a. Located in the middle of the flame-retardant fire-resistant sheet 16a
Flame-resistant fire-resistant sheets 16b, 16c on both sides arranged side by side
Is configured.

Then, the flame-retardant refractory sheet 16 of the intermediate portion is provided.
a is the overlap margin on both sides in the width direction over a predetermined width.
17 and 18, respectively. One of the flame-retardant fire-resistant sheets 16b, 16c on the both sides, that is, the right-side flame-retardant fire-resistant sheet 16b, has its inner end in the width direction over a predetermined width, and has the flame retardancy of the intermediate part. Overlap allowance 19 on the right side of fireproof sheet 16a and overlap allowance 19
The outer edge in the width direction is formed as an insertion edge portion 20 that is inserted into the insertion opening 3 of the right guide rail 1 over a predetermined width.

Further, the flame-retardant refractory sheets 16b on both sides are provided.
, 16c, the other side, that is, the left-side flame-retardant sheet 16c has an inner end in the width direction over a predetermined width, and the left side overlap portion 18 of the intermediate part flame-retardant fire-resistant sheet 16a.
Is formed as an insertion margin 22 for inserting the outer end in the width direction into the insertion opening 3 of the left guide rail 1 over a predetermined width.

Thus, the flame-retardant fire-resistant sheet at the intermediate portion
The overlap margins 17 and 18 at both ends of the 16a are the overlap margins 19 at the inner end of the right-side flame-retardant fire-resistant sheet 16b and the overlap margin 21 at the inner end of the left-side flame retardant sheet 16c. In the same direction. The right and left overlap margins 17 and 19 and the left and right overlap margin 18 and the overlap margin 21 are also deformed by the wind pressure of gas such as hot air, cold air and hot air. Each is overlapped with a width that maintains the overlapping state.

The flame-retardant fire-resistant sheet 16a at the intermediate portion and the flame-retardant fire-resistant sheets 16b, 16c at both sides are made of a predetermined material such as glass cloth, silica cloth or the like. It is formed with a width. The sheet member 14 is generally disposed in a substantially goodwill shape by the flame-retardant fire-resistant sheet 16a at the intermediate portion and the flame-retardant fire-resistant sheets 16b and 16c at both side portions.

Next, the right overlap margin 17 and the overlap margin 19 and the left overlap margin 18 and the overlap margin 21 are overlapped with each other in a normal state where no wind pressure is applied. Flame retardant sheet at the lower end of the flame retardant sheet 16a at the lower portion and at both sides of the flame retardant sheet 16a at the intermediate portion.
At the lower ends of 16b and 16c, one horizontal weight 23 formed integrally with each lower end and having a common length is attached by a plurality of bolts and nuts 24. The one weight 23 is formed of one left-right flame-retardant weight 25, and both ends of the flame-retardant weight 25 are inserted into the insertion openings 3 of the left and right guide rails 1. Insertion section 26 inserted vertically into the
Respectively.

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

When the shielded portion 2 is shielded, for example, when the motor 10 is operated by a fire signal from the control means in the event of a fire for shielding the shielded portion 2, the winding shaft 8 is driven by the output from the motor 10. The sheet 14, that is, the flame-retardant fire-resistant sheets 16 a, 16 b, 16 c is driven and rotated in the rewinding direction, and the winding drum 8 of the winding shaft 8 causes the respective flame-retardant fire-resistant sheets 16 a, 16 b, 16 c to be wound. It is rewound sequentially, and both insertion edges 20, 22 of the flame-retardant refractory sheets 16b, 16c on both sides.
Are guided by the left and right guide rails 1 and lowered, respectively, and the respective flame-retardant refractory sheets 16a, 16b, 16c are smoothly moved by the weight of the common flame-retardant weight 25 attached to their lower ends. Get down quickly.

At this time, each of the flame-retardant refractory sheets 16a, 16b,
16c is lowered while being tensed by the weight of the flame-retardant weight body 25, so that the overlap margins 17 and 18 at both end portions of the flame-retardant fire-resistant sheet 16a at the intermediate portion are changed to the right-side flame-retardant fire-resistant sheet. 16b
Allowance 19 at the inner end of the frame and the flame retardant sheet 16c on the left side
Are lowered from the same direction with respect to the overlap margin 21 at the inner end of the.

At this time, since the insertion portions 26 at both ends of the flame-retardant weight 25 are inserted into the insertion openings 3 of the guide rails 1 on both sides, the flame-retardant weight 25 is As a result, the sheet body 14 composed of the respective flame-retardant fire-resistant sheets 16a, 16b, 16c is smoothly lowered.

Then, each of the flame-retardant refractory sheets 16a, 16b,
The flame-retardant weight body 25 at the lower end of 16c is landed on the floor surface 2a of the shielded part 2, and the operation of the motor 10 is stopped by a stop signal from the control means that has input the detected detection signal,
The shielded portion 2 is shielded by the respective fire-resistant fire-resistant sheets 16a, 16b, 16c and the fire-resistant weight 25.

Further, when the flame-retardant fire-resistant sheets 16a, 16b, and 16c are stopped in tension while the flame-retardant weight body 25 is being landed, the lowering of the flame-retardant fire-resistant sheet 16a at the intermediate portion is stopped. The overlap margins 17 and 18 at both ends and the overlap margin 19 at the inner end of the right side flame-retardant refractory sheet 16b opposed to the overlap margins 17 and 18
And the overlap margin 21 at the inner end of the flame-retardant fire-resistant sheet 16c on the left side.
Are stopped while maintaining a state of being overlapped with each other.

Accordingly, as shown in FIG. 3, each of the flame-retardant refractory sheets 16a, 16b, 16c and the flame-retardant weight body 25, which are lowered and stopped substantially vertically without bending to one side, are shielded. The part 2 is completely shielded completely. The spread of smoke and the spread of fire in the event of a fire are prevented by the flame-retardant fire-resistant sheets 16a, 16b, 16c and the flame-retardant weight 25.

Next, each of the flame retardant refractory sheets 16a, 16b,
When each of the flame-retardant refractory sheets 16a, 16b, 16c receives wind pressure such as hot air from a fire in a state where the shielded portion 2 is shielded by the flame-retardant weight body 25, FIG. As shown, the adjacent and flame-retardant refractory sheets 16a, 16b, and 16c are bent and overlapped with each other and overlap with each other.
The sliding edges 20 and 22 of the flame-retardant refractory sheets 16b and 16c on both sides slide while absorbing the wind pressure such as hot air while maintaining the state in which the overlap margins 18 and 21 overlap each other. From the insertion opening 3 of the guide rail 1 is prevented.

Therefore, in a state where the shielded portion 2 is shielded by the respective flame-retardant fire-resistant sheets 16a, 16b, 16c having the flame-retardant weight 25 attached to the lower end thereof, the respective flame-retardant fire-resistant sheets 16 are provided.
Even if the sheet member 14 formed by the members a, 16b, and 16c is blown by receiving wind pressure such as hot air, the shielded portion 2 is entirely shielded by the sheet member 14 and one side of the shielded portion 2 The flow of hot air or the like during a fire is prevented from flowing toward the other side, and the spread of smoke and the spread of fire during a fire are prevented.

Next, a plurality of strip-shaped sheets 15 and a weight body
When the shielded portion 2 is shielded by 23, a plurality of strip-shaped sheets 15 are respectively lowered simultaneously, and at this time, both insertion edges 20, 22 of the strip-shaped sheets 15 located on both sides are respectively positioned on both sides. Along the insertion opening 3 of the guide rail 1 and the weight of the weight body 23, the sheet member 14 including the plurality of band-shaped sheets 15 is smoothly lowered.

When the weight body 23 is placed on the floor surface 2a of the shielded portion 2, the shielded portion 2 is shielded by the sheet member 14 including the plurality of belt-like sheets 15. On this occasion,
The plurality of belt-like sheets 15 are overlap margins 17 at one end in the width direction of the intermediate belt-like sheet 15 and overlap margins of the belt-like sheet 15 at one side.
19 and the overlapping margin 21 of the other end of the belt-shaped sheet 15 in the width direction of the belt-shaped sheet 15 of the intermediate part and the overlapping margin 21 of the belt-shaped sheet 15 of the other side are maintained in a mutually overlapping state. The to-be-shielded part 2 is reliably shielded by the sheet member 14 including the strip-shaped sheet 15 of FIG.

When a plurality of band-shaped sheets 15 of the sheet body 14 receive wind pressure such as hot air or cold air in a state where the shielded portion 2 is shielded by the sheet body 14, the adjacent band-shaped sheets 15 are exposed.
While bending, the overlap margin 17 at one side end of the width direction of the intermediate band-shaped sheet 15 and the overlap margin 19 of the band-shaped sheet 15 at the one side, and the other side edge of the width direction of the intermediate band-shaped sheet 15 Department overlap fee
18 and the overlap allowance 21 of the band-shaped sheet 15 on the other side are maintained in a mutually overlapping state, and are slid while absorbing the wind pressure, while inserting both the edge portions 20 of the band-shaped sheet 15 on both sides.
22 is prevented from coming out of the insertion opening 3 of the guide rail 1 on both sides.

Therefore, in a state where the shielded portion 2 is shielded by the sheet body 14 having the weight body 23 attached to the lower end, the plurality of belt-like sheets 15 of the sheet body 14 are subjected to wind pressure such as hot air or cold air. Even if it is blown by receiving, the covered portion 2 is completely covered with the plurality of belt-shaped sheets 15 reliably, and a gas such as hot air or cold air flows from one side of the covered portion 2 to the other side. Outflow is prevented.

[0046]

According to the first aspect of the present invention, when shielding the shielded portion, both insertion edges of the strip-shaped sheet located on both sides are respectively along the insertion openings of the guide rails on both sides, and Due to the weight of the weight body, the sheet body composed of a plurality of band-shaped sheets is smoothly lowered, and the weight body is landed on the floor surface of the shielded portion, thereby forming a sheet body composed of the plurality of band-shaped sheets. Thus, the overlapped portions of the side edges in the width direction of the adjacent belt-like sheets can be maintained in a state of overlapping each other, so that the shielded portion can be reliably shielded.

In a state where the shielded portion is shielded by the sheet body, when the sheet body receives wind pressure such as hot air or cold air, the adjacent belt-shaped sheets bend while maintaining the overlapping state. While the overlap margin slides and absorbs the wind pressure, the both ends of the sheet body can be reliably prevented from coming out of the insertion openings of the guide rails on both sides.

Therefore, even if the sheet is blown by the wind pressure of hot air, cold air or the like in a state where the shielded portion is shielded by the sheet having the weight attached to the lower end, the sheet is not affected by the sheet. The shielded portion can be completely shielded completely, and outflow of gas such as warm air or cold air from one side of the shielded portion toward the other side can be prevented.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, since the insertion portions at both ends of the weight are inserted into the insertion openings of the guide rails at both sides, the weight is shielded. When shielding the portion, the weight body can smoothly lower the sheet body composed of a plurality of band-shaped sheets.

In a state where the shielded portion is shielded by the sheet body and the weight body, when the sheet body receives wind pressure such as hot air or cold air, a plurality of belt-like sheets are formed by the weight body. The lower ends of the plurality of band-shaped sheets can be reliably lifted and separated, and the lower ends of the insertion ends of the band-shaped sheets located on both sides come out of the insertion openings of the guide rails. Can be reliably prevented.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, when the shielded portion is shielded, both the insertion edges of the flame-retardant fire-resistant sheet located on both sides are provided on both sides. The sheet composed of a plurality of flame-retardant fire-resistant sheets is smoothly lowered along the insertion opening of the guide rail of the section and by the weight of the flame-retardant weight, and the flame-retardant weight is shielded. When the sheet is made up of the plurality of flame-retardant fire-resistant sheets, the overlapping margins of the side edges in the width direction of the adjacent flame-retardant fire-resistant sheets overlap each other. It is possible to reliably shield the shielded portion by maintaining it.

In a state where the shielded portion is shielded by the sheet member, when the sheet member receives wind pressure such as hot air at the time of fire, the adjacent flame-retardant fire-resistant sheets are bent and overlap each other. It is possible to reliably prevent both side ends of the sheet from slipping out of the insertion openings of the guide rails on both sides while absorbing the pressure of hot air or the like while sliding while maintaining the overlapped margins.

Therefore, even if the sheet is blown by the wind pressure of hot air or the like in a state where the shielded portion is shielded by the sheet having the flame-retardant weight attached to the lower end thereof, the sheet is not affected by the sheet. A screen device that can completely shield the shielded part completely and prevent the flow of hot air etc. at the time of fire from one side to the other side of the shielded part, and can prevent the diffusion of smoke and the spread of fire at the time of fire Can be provided.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the same.

FIG. 3 is an explanatory plan view of the sheet body in a state where the shielded portion is shielded.

FIG. 4 is an explanatory plan view of the sheet member showing a state in which the sheet member is bent.

FIG. 5 is a perspective view showing a conventional screen device.

FIG. 6 is an explanatory plan view of the sheet body in a state where the shielded portion is shielded.

FIG. 7 is an explanatory plan view of the sheet body showing a state in which the sheet body is bent.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Shielded part 2a Floor surface 3 Insertion port 14 Sheet body 15 Belt-like sheet 16 Flame-retardant fire-resistant sheet 17, 18, 19, 21 Stacking margin 20, 22 Insertion edge 23 Weight body 25 Flame-resistant weight Body 26 insertion part

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

Claims (3)

[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 sheet body that is inserted and vertically movable along the vertical direction to shield the shielded portion, and a weight that is placed on the floor surface of the shielded portion when the shielded portion is shielded by the sheet body. And a weight body, wherein the sheet body is formed of a plurality of strip-shaped sheets provided side by side along the width direction so as to be capable of ascending and descending so as to shield the shielded portion. The band-shaped sheets of the above-mentioned band-shaped sheets are overlapped with each other as a margin for the width to maintain the overlapped state even when the band-shaped sheets are bent, and the band-shaped sheets located on both sides. Guides on both sides with both outer ends of the Respectively inserted into the insertion opening of Lumpur, attaching the weight body to the lower end portion of the plurality of belt-like sheet, screen device according to claim. 2. The weight body is integrally formed with a length to be attached along lower end portions of a plurality of strip-shaped sheets, and has insertion portions inserted into insertion openings of guide rails on both side portions at both end portions. The screen device according to claim 1, wherein: 3. The plurality of strip-shaped sheets are each formed of a flame-retardant fire-resistant sheet, the weight body is formed of a flame-retardant weight body, and lower ends of the plurality of flame-retardant fire-resistant sheets. The screen device according to claim 1, wherein the flame-retardant weight body is attached to a portion.