JP3865755B2 - Screen device - Google Patents

Description

  The present invention relates to a screen device, and more particularly to a fireproof screen device that shields a predetermined position in a building as a fireproof section and prevents diffusion and spread of smoke in a fire.

  Conventionally, as a fireproof screen device of this type, for example, as described in Japanese Patent Application Laid-Open No. 8-164218, one end is wound so that the winding shafts are in contact with each other and adjacent to each other when shielding the shielded portion. It has a large number of belt-like sheets that are unwound and hanged down, and a rod-shaped weight of the same length as the width of each belt-like sheet that is individually attached to the lower end of the belt-like sheets, and is covered in an emergency such as a fire. A configuration is known in which a large number of strip-shaped sheets that shield the shielding portion are spread to allow escape from between the strip-shaped sheets (see, for example, Patent Document 1).

  However, in the configuration described in this publication, since a large number of belt-like sheets hang down in a state where both end portions in the width direction are in contact with each other and are adjacent to each other, the large number of belt-like sheets were beaten by wind pressure such as hot air during a fire. When the adjacent belt-like sheets are in contact with each other, the adjacent side edge portions are separated from each other, and a gap through which hot air or the like flows is easily formed between them, and the outer edges of the belt-like sheets located at both side edge portions. Similarly, there is a problem that a gap through which hot air or the like flows out is easily formed between the portion and the side wall of the shielded portion.

Therefore, the fireproof sheet body that can be raised and lowered to the guide rail that shields the shielded part from the airtightness at the time of shielding the shielded part and the ease of escape in the event of a fire, etc. A weight body that is formed of a plurality of strip sheets in the vertical direction arranged side by side in a stacked state as a stacking allowance, and is attached to the floor surface of the shielded portion at the lower end of the plurality of strip sheets. Some are fixed.
JP-A-8-164218

  However, in the configuration in which the overlapping margins of both side end portions in the width direction of the plurality of belt-like sheets are overlapped, when the plurality of belt-like sheets that shield the shielded portion are not blown by wind pressure such as hot air during a fire, Each belt-like sheet is in a state in which the overlap margins at both end portions are overlapped with each other, so that the airtightness is maintained in each belt-like sheet, and when escaping, the overlap margin of the adjacent belt-like sheet is pushed open to escape. However, when multiple strip sheets that shield the shielded part are blown by wind pressure such as hot air during a fire, the multiple strip sheets are bent into an arc shape due to the pressure. Therefore, the overlapping margins of the belt-like sheets located in the central part are easily separated from each other, and the outer end portions of the belt-like sheets located on both side edges are easily detached from the guide rail. , Therefore, hardly a gap is held liable airtightness formed hot air or the like flowing out, there is a problem that.

  The present invention has been made in view of these points, and prevents the sheet body from being bent even when the sheet body is rolled by wind pressure such as hot air, thereby improving the airtightness when shielding the shielded portion. It is easy to escape when the shielded part is shielded. Therefore, for example, a screen where a predetermined position in the building is shielded as a fire prevention zone, and it is possible to prevent the spread of smoke and the spread of fire in the event of a fire. The object is to provide an apparatus.

  The screen device according to claim 1 is a guide rail that is fixed relative to both sides of the shielded portion and has an insertion port formed in the vertical direction so as to face each other. A sheet body that is provided so as to be movable up and down by inserting both end portions thereof, and that prevents the sheet body from being bent when the shielded section is shielded by the sheet body provided by the sheet body. A sheet support body in the width direction of the sheet body to be inserted, and the sheet body inserts an outer end portion in the width direction into the insertion holes of the guide rails on both side portions and overlaps the inner end portion in the width direction. At least two belt-like sheets in the vertical direction that are stacked on top of each other, and the sheet support has support members that are respectively fixed to the belt-like sheets while leaving the respective overlapping margins. And this The support members of the belt-like sheet have engaging members that can be engaged and disengaged, and the engaging members of the support members are spaced apart from each other when the shielded part is shielded, and are engaged with each other when the sheet member receives wind pressure. Each of the engaging body and the other engaging body are shielded before the sheet body is subjected to wind pressure. When the sheet body is subjected to wind pressure while facing each other in a state where it is positioned forward and backward without being engaged, and the sheet body is subjected to wind pressure, the engagement protrusion of the one engagement body is It is inserted into the insertion recess of the other engagement body and engaged with the engagement protrusion of the other engagement body, and the overlap margin is held in a state of being overlapped with each other.

  The screen device according to a second aspect is the screen device according to the first aspect, wherein the engaging bodies are spaced apart from each other when the shielded portion is shielded, and are engaged with each other when the sheet member receives wind pressure. The first insertion recess and the second insertion for inserting the first engagement projection piece and the second engagement projection piece on the other side, respectively. The first engaging protrusion and the second engaging protrusion are formed apart from each other in the width direction of the sheet body, and the sheet body receives wind pressure. The first engagement protrusion is inserted into the second insertion recess on the mating side to engage with the second engagement protrusion on the mating side, and the first of the first engagement protrusions The mating second engaging projection piece is inserted into the mating insertion recess, and the second engaging projecting piece is inserted into the mating first insertion recess to And the mating first engaging protrusion is inserted into the second insertion recess of the second engaging protrusion, and the engaging bodies are engaged with each other. It is connected to a series in a removable manner.

  The screen device according to claim 3 is the screen device according to claim 1 or 2, wherein the sheet support is provided in the middle of the sheet body.

  A screen device according to a fourth aspect is the screen device according to any one of the first to third aspects, wherein at the time of escape in a state where the shielded portion is shielded, one of the support members is pushed in the escape direction. Thus, the opening between the overlapping margins opened apart from each other serves as an outlet, and after the exit, the overlapping margins opened as the outlet according to the weight of one of the support members are again overlapped with each other. It will be retained.

  According to the present invention, even when the sheet body is blown by wind pressure such as hot air, it is possible to prevent the sheet body from being bent and to improve the airtightness at the time of shielding the shielded part, and to escape when the shielded part is shielded For example, it is possible to provide a screen device that shields a predetermined position in a building as a fire-proof section, can prevent smoke from spreading and spreading during a fire, and can easily escape during a fire.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  Reference numeral 1 designates left and right guide rails vertically fixed to the opposite side walls of the shielded part 2 respectively, and the left and right guide rails 1 are vertically inserted into the insertion openings. 3 and has a substantially U-shaped cross section, and the opposing insertion ports 3 are respectively formed by front and rear guide pieces 4 formed in front and rear in parallel with each other. The shielded part 2 means openings such as doorways, emergency exits, and passages that shield a predetermined position in the building as a fire protection section.

  A screen box 6 into which the upper end portions of the left and right guide rails 1 are inserted is fixed to the ceiling wall portion 5 such as the upper casing of the upper end portion of the shielded portion 2, and the screen box 6 is fixed to the lower end portion. A left and right guide port 7 is formed to open to communicate with the insertion ports 3 of the left and right guide rails 1.

  Further, a winding shaft 9 having a right and left winding drum 8 is rotatably mounted in the screen box 6, and one end of the winding shaft 9 is rotated to drive the winding shaft 9. The wheel 10 is fixed. A motor 11 is fixed in the screen box 6 so as to be able to rotate forward and backward. A driving wheel 13 is fixed to an output shaft 12 of the motor 11 at a position facing the rotating wheel 10. An endless rotating body 14 is suspended between the rotating wheels 10 so as to freely rotate.

  The motor 11 is actuated by an output signal such as a fire signal from a control means (not shown), and the output of the motor 11 is decelerated and transmitted to the winding shaft 9. Further, the motor 11 is automatically stopped at a predetermined number of rotations set in accordance with the landing position where a weight body, which will be described later, lands on the floor surface 15 of the shielded part 2. ing. The motor 11 is a stop signal from the control means that receives a detection signal from the detection means that is detected by the detection means when a later-described weight body is landed on the floor 15 of the shielded part 2. The operation may be stopped by.

  Next, an upper end portion of a vertically movable sheet body 16 that shields the shielded portion 2 is fixed and wound around the winding drum 8, and the sheet body 16 is rotated by rewinding the winding drum 8. The shielded portion 2 is shielded by being lowered with both end portions in the width direction inserted into the insertion openings 3 of the left and right guide rails 1. The sheet body 16 is formed of a non-combustible sheet body 17, and the non-combustible sheet body 17 is formed of, for example, a non-combustible fabric such as glass cloth or silica cloth.

  The incombustible sheet body 17 is selected according to the size of the shielded part 2 in the width direction, and a plurality of vertically incombustible belt-like sheets 18 necessary for shielding the shielded part 2 are arranged side by side. In this embodiment, for convenience of explanation, a case where two non-combustible belt-like sheets 18 in the vertical direction are used will be described.

  Thus, the non-combustible sheet body 17 has two non-combustible belt-like sheets 18 in the vertical direction, and the two non-flammable belt-like sheets 18 have the outer ends in the width direction at the left and right guides. It is formed as an insertion part 19 that is inserted into the insertion port 3 of the rail 1 so as to be able to move up and down, and the inner end part in the width direction is formed as a stacking allowance 20, respectively. Has been.

  The two non-combustible belt-like sheets 18 are connected to the upper sheet piece 18a, which is wound around the winding drum 8 so that the upper end part is fixed and freely rewound, and to the lower end part of the upper sheet piece 18a. A lower sheet piece 18b provided, and the lower sheet piece 18b is connected to the lower end of the upper sheet piece 18a to prevent bending of the two incombustible belt-like sheets 18. A body 16, that is, a sheet support 21 in the width direction of the belt-like sheet 18.

  The sheet support 21 is formed by an intermediate beam member 22. The middle crosspiece member 22 is arranged in the vertical direction on the belt-like sheet 18 depending on the length in the vertical direction of the non-combustible belt-like sheet 18 selected according to the height direction (vertical direction) of the shielded part 2. In the present embodiment, for convenience of explanation, in the present embodiment, a lower end portion of the upper sheet piece 18a corresponding to an intermediate portion in the vertical direction of the belt-like sheet 18 that shields the shielded portion 2 is provided. A case where the lower sheet pieces 18b are continuously provided will be described.

  The upper sheet piece 18a has a retaining protrusion 24 formed by wrapping the rod-shaped core member 23 at the lower end portion, and the lower sheet piece 18b is formed by a retaining protrusion formed by wrapping the rod-shaped core member 25 at the upper end portion. Each has Article 26.

  The middle beam member 22 includes a first middle beam plate 28 having a U-shaped cross section in which vertical sandwiching pieces 27 are formed in the vertical direction opposite to each other, and the upper and lower surfaces of the first middle beam plate 28. And a second middle crosspiece plate 30 having a U-shaped cross section in which sandwiching protrusions 29 projecting toward the sandwiching piece 27 are formed vertically.

  Further, the first intermediate plate 28 is provided at both ends with the opening edge of the insertion opening 3 of the left and right guide rails 1, that is, one guide piece 4 of the front and rear guide pieces 4 from the inside of the guide rail 1. Each has a retaining protrusion 31 to be engaged. Further, the second middle cross plate 30 is provided at both ends of the opening edge of the insertion opening 3 of the left and right guide rails 1, that is, the other guide piece 4 of the front and rear guide pieces 4 from the inside of the guide rail 1. Each has a retaining protrusion 32 to be engaged. The retaining projection 31 of the first middle plate 28 and the retaining projection 32 of the second middle plate 30 protrude in opposite directions.

  Then, the lower end portion of the upper sheet piece 18a is located below the upper end portion of the holding piece 27 on the upper portion of the first middle crosspiece plate 28 and the holding protrusion piece 29 on the upper portion of the second intermediate crosspiece plate 30. An upper portion between the lower end portion of the holding piece 27 at the lower portion of the first middle plate 28 and the holding protrusion piece 29 at the lower portion of the second middle plate 30 is accommodated in each of the retaining protrusions 24. Respectively, and the upper and lower retaining ridges 24 and 26 are respectively formed by the first middle plate 28 and the second middle plate 30. By sandwiching and fixing these middle crosspieces 28, 30 with bolts and nuts 33, the first middle crosspiece 28 and the second middle crosspiece 30 have the lower part at the lower end of the upper sheet piece 18a. The upper ends of the sheet pieces 18b are connected to each other.

  Next, the two nonflammable belt-like sheets 18 are formed on the lower end portion of the two nonflammable belt-like sheets 18, that is, at the lower end portion of the lower sheet piece 18b. It has a sheet support body 34 in the width direction of the sheet body 16, that is, the belt-shaped sheet 18, which prevents bending. The sheet support 34 is formed of a weight body 35 that is landed on the floor surface 15 of the shielded portion 2, and the weight body 35 is formed of a non-combustible material so as to be incombustible.

  The sheet support body 34, that is, the weight body 35, leaves the overlap margin 20 at the lower end portion of the lower sheet piece 18b, that is, the lower end portion of the overlap margin 20 serves as a free end portion 20a. Support members 36 are integrally fixed to the lower end portions of 18b, and the support members 36 are formed by weight members 37 that are integrally fixed to each of the lower sheet pieces 18b.

  The weight member 37 for each of the two lower sheet pieces 18b has guide protrusions 38 that are inserted into the insertion ports 3 of the left and right guide rails 1 at the outer end portions thereof, and are opposed to each other. The sheet body 16 (non-combustible sheet body 17) that shields the shielded part 2 at the end engages with each other when the wind pressure is applied, and can be engaged and disengaged to hold the overlap allowance 20 in a state of being overlapped with each other. Each of the engaging bodies 39 is provided.

  Each of the guide protrusions 38 has a retaining protrusion 40 that engages with the front and rear guide pieces 4 from the inside of the guide rail 1 at the outer end of the guide protrusion 38. 40 is opposed to the front and rear guide pieces 4 and protrudes in opposite directions.

  The engaging bodies 39 are spaced apart from each other when the shielded portion 2 is shielded, and are engaged with each other when the sheet body 16 (noncombustible sheet body 17) receives wind pressure. Each of the first insertion recess 43 and the second engagement protrusion 42 has a piece 41 and a second engagement protrusion 42 and inserts the first engagement protrusion 41 and the second engagement protrusion 42 on the other side. Each has an insertion recess 44. The first engagement protrusion 41 and the second engagement protrusion 42 of the engagement body 39 are formed separately from each other in the width direction of the sheet body 16 (noncombustible sheet body 17).

  When the sheet body 16 (non-combustible sheet body 17) receives wind pressure, the first engagement protrusion 41 is inserted into the second insertion recess 44 on the mating side and second on the mating side. And the mating second engagement projection piece 42 is inserted into the first insertion recess 43 of the first engagement projection piece 41, and the second engagement projection piece 42 is engaged with the second engagement projection piece 42. The mating projecting piece 42 is inserted into the mating first insertion recess 43 and engaged with the mating first engaging projecting piece 41, and the second engaging projecting piece 42 has a second The mating first engagement protrusion 41 is inserted into the insertion recess 44, and the engagement bodies 39 are connected in series so as to be detachable.

  Further, the weight member 37 for each of the two lower sheet pieces 18b is located in the vicinity of the inner end portion of the engaging body 39 and displays a position for pushing the weight member 37 at the time of escape. 45 each. The push-in display body 45 is provided on the weight member 37 of each of the two lower sheet pieces 18b at positions opposite to each other, but the push-in display body 45 is provided in front of one weight member 37. When provided, the other weight member 37 is provided with a pushing display body 45 on the back surface side.

  Next, the operation of the embodiment will be described.

  When shielding the shielded part 2, for example, when the motor 11 is activated by a fire signal in the event of a fire that shuts off the shielded part 2, the winding shaft 9 is turned into a sheet body 16, that is, a non-combustible sheet by the output from the motor 11. The body 17 is driven and rotated in the direction of rewinding, and the nonflammable sheet body 17 is sequentially rewound from the winding drum 8 of the winding shaft 9.

  Then, the incombustible sheet body 17 is lowered so that the incombustible sheet body 17 is inserted into the insertion ports 3 of the left and right guide rails 1 with the insertion portions 19 at both end portions in the width direction being seat support 21. That is, the weight is lowered smoothly along the insertion openings 3 of the left and right guide rails 1 due to the weight of the intermediate beam member 22 and the seat support 34, that is, the weight body 35.

  At this time, the intermediate beam member 22 has a retaining protrusion 31 that engages from the inside of the guide rail 1 at the opening edge of the insertion port 3 of the left and right guide rails 1 at both ends, and the weight of the weight body 35. By having retaining protrusions 40 engaged from the inside of the guide rail 1 at the opening edges of the insertion openings 3 of the left and right guide rails 1 at the outer end of the member 37, the respective retaining protrusions 31, 40 are provided. Thus, the non-combustible sheet member 17, the middle rail member 22, and the weight member 37 are prevented from coming out of the insertion openings 3 of the left and right guide rails 1.

  Further, when the weight body 35 at the lower end of the non-combustible sheet body 17 is landed on the floor surface 15 of the shielded portion 2, the motor 11 is stopped by rotating at a predetermined rotation speed set in advance. The shielded part 2 is reliably shielded by the weight body 35 and the incombustible sheet body 17.

  And between the insertion part 19 of the both ends of the width direction of this incombustible sheet body 17 and the insertion port 3 of the left and right guide rail 1, and between the weight body 35 and the floor 15 of the shielded part 2 are provided. Each shielded part 2 is shielded securely and airtightly, and the overlap margin 20 at the inner end in the width direction of the two belt-like sheets 18 of the incombustible sheet body 17 is kept in a state of being overlapped with each other. Is done.

  At this time, the support members 36 provided at the lower end portions of the lower sheet pieces 18b of the two strip-like sheets 18 of the incombustible sheet body 17, that is, the engagement bodies 39 at the inner end portions of the weight members 37 are separated from each other. Opposing, that is, the first engagement protrusion 41 and the second engagement protrusion 42 of one engagement body 39 and the first engagement protrusion 41 and the second engagement protrusion of the other engagement body 39. The pieces 42 are opposed to each other without being engaged with each other, and the overlapping margins 20 of the inner end portions in the width direction of the two belt-like sheets 18 are held in an overlapped state.

  Next, when the shielded portion 2 is shut off by the two belt-like sheets 18 and the weight member 37 of the incombustible sheet body 17, when the two belt-like sheets 18 are subjected to wind pressure, Engaging bodies 39 at the opposite inner ends of the weight members 37 respectively provided at the lower ends of the two belt-like sheets 18 are engaged with each other, and the weight members 37 are connected in series.

  That is, the first engagement protrusion 41 of one engagement body 39 is inserted into the second insertion recess 44 of the other engagement body 39 and is engaged with the second engagement protrusion 42 of the other engagement body 39, respectively. In addition, the second engagement protrusions 42 of one engagement body 39 are inserted into the first insertion recesses 43 of the other engagement body 39 to become the first engagement protrusions 41 of the other engagement body 39. The two weight members 37 are connected in series by engaging each other.

  Then, the lower sheet piece 18b of each belt-like sheet 18 is prevented from being greatly bent by the sheet support 21 in the middle portion between the weight members 37 and the belt-like sheet 18, that is, the middle rail member 22, and these belt-like sheets 18 The upper sheet piece 18a of each belt-like sheet 18 is prevented from being greatly deflected by the middle intermediate member 22 of the substantially middle portion of the belt-like sheet member 18, so that the overlap margin 20 of the belt-like sheets 18 is held in a state of being overlapped with each other. .

  At this time, the intermediate beam member 22 has retaining protrusions 31 that engage with the opening edges of the insertion openings 3 of the left and right guide rails 1 at both ends, and the outer end portion of the weight member 37 of the weight body 35. By having the retaining protrusions 40 engaged with the opening edges of the insertion openings 3 of the left and right guide rails 1 on the left and right guide rails 1, the retaining protrusions 31, 40 are provided even when the incombustible sheet body 17 is scooped by wind pressure. Thus, the non-combustible sheet member 17, the middle rail member 22, and the weight member 37 are prevented from coming out of the insertion openings 3 of the left and right guide rails 1.

  Further, the double weight members 37 are fixed to the lower end portion of the lower sheet piece 18b, leaving the overlapping margin 20 of the lower sheet piece 18b of each belt-like sheet 18, so that the overlapping margin 20 of the lower sheet piece 18b is mutually fixed. As the free end portion 20a, it is easily overlapped. When subjected to wind pressure, the overlap allowance 20 is brought into close contact with each other, and when the engaging bodies 39 of the opposed inner end portions of both weight members 37 are connected to each other, the overlap allowance 20 The engaging bodies 39 are smoothly connected to each other without being influenced by each other. Then, the belt-like sheets 18 of the weight members 37 connected in series are prevented from being bent, and the overlap margin 20 of the belt-like sheets 18 is held in a state of being overlapped with each other.

  Therefore, even when the two belt-like sheets 18 of the non-combustible sheet body 17 are subjected to wind pressure, the overlapping margin 20 of the two belt-like sheets 18 is prevented from coming off and The outer end in the width direction of the belt-like sheet 18 is prevented from being removed from the insertion openings 3 of the left and right guide rails 1, and the airtightness is maintained by the non-combustible sheet body 17 that blocks the shielded part 2 as a whole.

  Next, when the shielded part 2 is shielded by the non-combustible sheet body 17 and the weight body 35, the weight member 37 of one of the belt-like sheets 18 of the two belt-like sheets 18 is provided. When the push-motion display body 45 is pushed in the escape direction, the engagement body 39 of the one weight member 37 is easily separated from the engagement body 39 of the other weight member 37, and the one weight member 37 The overlap margin 20 of the lower sheet piece 18b of the belt-like sheet 18 having the above is easily separated from the overlap margin 20 of the lower sheet piece 18b of the belt-like sheet 18 having the other weight member 37.

  Further, when the pushing display body 45 provided on the other weight member 37 is pushed in the escape direction, the engaging body 39 of the other weight member 37 is easily separated from the engaging body 39 of the one weight member 37. The overlap margin 20 of the lower sheet piece 18b of the belt-like sheet 18 having the other weight member 37 is easily separated from the overlap margin 20 of the lower sheet piece 18b of the belt-like sheet 18 having the one weight member 37. Is done.

  Then, by pushing any one of the push-in display bodies 45 in the escape direction, it is possible to easily escape from the exit using the openings between the overlapping margins 20 opened apart from each other as an exit. .

  Further, after the escape, the weight member 37 is restored by the weight of one of the weight members 37, and the engagement body 39 of the one weight member 37 becomes the engagement body 39 of the other weight member 37. And the overlap margin 20 of the lower sheet piece 18b of one belt-like sheet 18 having one weight member 37 is overlapped with the overlap margin 20 of the lower sheet piece 18b of the other belt-like sheet 18. Then, the overlapping allowances 20 opened as escape ports are held in a state where they are overlapped with each other again.

  Next, in the above-described embodiment, the sheet support 34 provided at the lower end portion of the lower sheet piece 18b of the two belt-like sheets 18 is formed by the weight body 35, and the weight body 35 is composed of two belt-like sheets. The case where the weight member 37 is provided on each of the lower sheet pieces 18b of the sheet 18 has been described. However, the sheet support 34 is not limited to the weight body 35, and the intermediate beam member 22 used in the embodiment is used. The sheet support 21 may be fixed to the two belt-like sheets 18 while leaving the respective overlapping margins 20.

  In this case, the intermediate beam member 22 having the retaining protrusions 31 and 32 at both ends is divided into two corresponding to the two belt-like sheets 18, and the retaining member 31 and 32 is supported at the outer end. Formed as members 36, these support members 36 are fixed to the two belt-like sheets 18 leaving their respective overlapping margins 20, and can be engaged with and disengaged from each other at the opposite inner end portions of the same configuration as in the above embodiment. An engaging body 39 is formed to engage with.

  Each support member 36 is provided with a push-motion display body 45 as in the case of the above embodiment. Other configurations are the same as those in the above embodiment.

  By configuring in this way, even if the two belt-like sheets 18 of the non-combustible sheet body 17 are subjected to wind pressure, it is possible to prevent the overlapping margin 20 of the two belt-like sheets 18 from overlapping each other. In addition, the outer end portions in the width direction of the two belt-like sheets 18 are prevented from coming off from the insertion openings 3 of the left and right guide rails 1 and are airtight by the nonflammable sheet body 17 that totally blocks the shielded portion 2. Sex is preserved.

  Further, when the shielded portion 2 is shielded by the non-combustible sheet body 17 and the weight body 35, the push indicator 45 is pushed in the escape direction as in the case of the above embodiment. An opening is formed between the overlapping margins 20 of the two belt-like sheets 18 that are overlapped with each other, and the opening is used as an outlet to easily escape from the outlet.

  Next, in each of the above-described embodiments, when the shielded portion 2 is shielded by the sheet body 16 (noncombustible sheet body 17), the sheet support body that prevents the sheet body 16 (noncombustible sheet body 17) from bending. 21 and 34 are divided into two parts corresponding to the weight member 35, that is, the support member 36 that is fixed to each of the two belt-like sheets 18, or the middle rail member 22, that is, the two belt-like sheets 18. However, the present invention is not limited to this, but the support member 36 of the weight body 35 and the support member 22 are divided and supported by the support member 36 that is formed and fixed to each of the two belt-like sheets 18. The member 36 may be formed.

  Next, in the above-described embodiment, the engagement body 39 provided at the inner end of the support member 36 has a first engagement protrusion that engages with each other when the sheet body 16 (non-combustible sheet body 17) receives wind pressure. The first insertion recess 43 and the second insertion recess 44 into which the piece 41 and the second engagement protrusion 42 and the first engagement protrusion 41 and the second engagement protrusion 42 on the other side are inserted. However, the present invention is not limited to this. For example, as shown in FIG. 9, one engagement protrusion 41 and one engagement protrusion 41 on the other side are inserted into the engagement body 39. One insertion recess 43 may be provided.

  Since other configurations are the same as those in the above-described embodiments, the same configurations as those in the above-described embodiments are denoted by the reference numerals used in the above-described embodiments, and description thereof is omitted.

  With this configuration, when the shielded part 2 is shielded by the sheet body 16 (non-combustible sheet body 17), the sheet body 16 (non-combustible sheet body 17) is the same as in each of the above embodiments. Even if they are subjected to wind pressure or the like, the opposing engaging bodies 39 are engaged with each other to prevent the sheet body 16 (incombustible sheet body 17) from being bent, and the overlap allowance 20 is held in a state of being overlapped with each other. be able to.

  Next, in each of the embodiments described above, the retaining protrusion 31 at the end of the first middle rail plate 28 of the middle rail member 22 is wider than the retaining protrusion 32 at the end of the second middle rail plate 30. However, the present invention is not limited to this, and the retaining protrusion 31 at the end of the first intermediate plate 28 is not the protruding protrusion at the end of the second intermediate plate 30. You may make it form in the shape of substantially the same width as 32.

  In this case, for example, as shown in FIG. 10, the first intermediate plate 28 abuts the upper and lower clamping pieces 29 of the second intermediate plate 30 via the upper sheet piece 18a and the lower sheet piece 18b. It is formed with a possible width, and both end portions of the first middle cross plate 28 are bent in the opposite direction to the retaining projection 32 at the end of the second middle cross plate 30, and this is used as the retaining projection 31. Form.

  Since other configurations are the same as those in the above-described embodiments, the same configurations as those in the above-described embodiments are denoted by the reference numerals used in the above-described embodiments, and description thereof is omitted.

  With this configuration, the configuration of the first middle crosspiece plate 28 is simplified, the retaining protrusion 31 can be easily formed, and the overall configuration of the middle crosspiece member 22 is simple and easy to manufacture.

It is a front view of the screen apparatus which shows one embodiment of this invention. It is a cross-sectional top view same as the above. It is a side view same as the above. It is sectional drawing of a crosspiece member same as the above. It is a perspective view of the edge part of a middle crosspiece member same as the above. It is a cross-sectional top view which shows the state which the same engaging body same as the above. It is a cross-sectional top view which shows the state which the engaging body engaged when it received wind pressure same as the above. It is a cross-sectional top view which shows the state which the engagement body same as the above separated. It is a cross-sectional top view of the screen apparatus which shows other embodiment. It is a perspective view of the edge part of the middle crosspiece member which shows other embodiment.

Explanation of symbols

1 Guide rail 2 Covered part 3 Insertion slot
16 sheet body
18 Strip sheet
20 Stacking allowance
21, 34 Seat support
36 Support member
39 Engagement body
41, 42 Engagement protrusion
43, 44 Insertion recess

Claims (4)

Guide rails fixed relative to both sides of the shielded part and opposed to each other to form an insertion port in the vertical direction;
A sheet body that is provided so as to be movable up and down by inserting both side end portions in the width direction into the insertion holes of the guide rails on both side portions, and shielding the shielded portion,
A sheet support in the width direction of the sheet body that prevents bending of the sheet body when the shielded portion is shielded by the sheet body,
The sheet body includes at least two vertically extending portions arranged in parallel with each other with the widthwise inner end portion being overlapped with the widthwise inner end portion being inserted into the insertion opening of the guide rail on both sides. Having a belt-like sheet,
The sheet support has support members fixed to the belt-like sheets, leaving respective overlap margins on the belt-like sheets, and the support members of the belt-like sheets have engaging bodies that can be engaged and disengaged, respectively.
The engaging member of the support member is spaced apart when the shielded part is shielded, and an engaging projecting piece that engages with each other when the sheet body receives wind pressure and an engaging projecting piece on the other side are inserted. Each has an insertion recess to
When the sheet body is shielded before receiving the wind pressure, the one engaging body and the other engaging body face each other without being engaged with each other, and the overlapping margins are held in an overlapped state. And
When the sheet body receives wind pressure, the engagement protrusion of the one engagement body is inserted into the insertion recess of the other engagement body and engaged with the engagement protrusion of the other engagement body, The screen apparatus is characterized in that the overlapping margins are held in a state of being overlapped with each other. The engaging body has a first engaging protrusion and a second engaging protrusion that are opposed to each other when the shielded part is shielded and engage with each other when the sheet body receives wind pressure, Each of the first engagement protrusion and the second insertion protrusion has a first insertion recess and a second insertion recess into which the first engagement protrusion and the second engagement protrusion on the other side are inserted. Each of the engagement protrusions is formed separately from each other in the width direction of the sheet body,
When the sheet body receives wind pressure, the first engagement protrusion is inserted into the second insertion recess on the counterpart side and engaged with the second engagement protrusion on the counterpart side; and The mating second engaging projecting piece is inserted into the first inserting recess of the first engaging projecting piece, and the second engaging projecting piece is inserted into the mating first inserting recess. Engaging the first engaging protrusion on the other side and inserting the first engaging protrusion on the other side into the second insertion recess of the second engaging protrusion. The screen device according to claim 1, wherein the combined members are connected in series so as to be detachable. The screen apparatus according to claim 1, wherein the sheet support is provided in the middle of the sheet. When evacuating in a state where the shielded part is shielded, one of the supporting members is pushed in the evacuation direction, so that the opening between the overlapping margins opened apart from each other becomes an evacuation exit. The screen device according to any one of claims 1 to 3, wherein the overlap margins opened as the escape port are held in a state where they overlap each other by the weight of any one of the support members.

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