JP3704236B2 - Fireproof screen equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a fireproof screen device, for example, a device that prevents the spread and spread of smoke during a fire.
[0002]
[Prior art]
  Conventionally, as this type of fireproof screen device, for example, a guide rail that is fixed relative to both sides and opposed to each other, and an insertion slot is formed in the vertical direction, and both sides in the width direction are inserted into the guide rail insertion slots on both sides. A sheet body formed of a noncombustible material that inserts an end portion and is rewound and lowered by a take-up drum and shields between the guide rails on both side portions, and is fixed to the lower end portion of the sheet body and fixed on the both side portions. And a weight body that is placed on the floor surface between the guide rails. When the sheet body is rewound by the winding drum, the sheet body lays the weight body on the floor surface and shields the shielded portion between the guide rails on both sides in a tensioned state without slack. It is like that.
[0003]
[Problems to be solved by the invention]
  In the conventional fireproof screen device, the sheet body formed of non-combustible cloth shields the shielded part in a tensioned state with no slack, and when this sheet body is heated by fire heat such as hot air, The weight body is pulled up on the floor surface by this heat-shrinkable sheet body, and a gap through which hot air flows out is formed between the weight body and the floor surface to shield the shielded part. There is a problem that the airtightness as a fire prevention compartment is impaired, and it may be difficult to prevent the diffusion and spread of smoke.
[0004]
  The present invention has been made in view of such problems, and when shielding the shielded part with the noncombustible sheet body, the shielded part is in a state in which the noncombustible sheet body is securely slackened in the vertical direction. Even if this non-combustible sheet body is heated by fire heat such as hot air and thermally contracted upward, the airtightness between the weight body at the lower end of this non-combustible sheet body and the floor surface is ensured. It is an object of the present invention to provide a fireproof screen device that can be held at a low temperature and can prevent smoke from spreading and spreading.
[0005]
[Means for Solving the Problems]
ContractClaim1The fireproof screen device described is fixed to both sides of the shielded part and is opposed to each other, and has a guide rail in which an insertion port is formed in the vertical direction, and is provided rotatably between the guide rails on both sides. The take-up drum is wound around the take-up drum so as to be freely rewound, and when being rewound, the both ends in the width direction are lowered into the insertion holes of the guide rails on the both sides, and the shielded part is shielded. A non-combustible sheet body that is formed in a slack length and has an escape slit, and a weight body that is provided at the lower end portion of the non-combustible sheet body and that lands on the floor surface of the shielded part. In the fireproof screen apparatus provided, the winding drum is rotated in a direction to rewind the non-combustible sheet body, and the rotation of the winding drum is stopped when the weight body is lowered just before landing on the floor surface. The winding to let A sheet opening / closing means for rotating the ram by a predetermined amount; and a non-combustible sheet body disposed on the winding drum on the rewinding side of the non-combustible sheet body so as to be movable downward and unwound from the winding drum. And a sheet relaxed body that guides the descent and moves downward when the shielded part is shielded to land the weight body on the floor surface and loosen the non-combustible sheet body.
[0006]
  When the sheet opening / closing means is activated due to the occurrence of a fire, the winding drum is driven to rotate in the direction of rewinding the non-combustible sheet body by the sheet opening / closing means, and the non-combustible sheet body is sequentially transferred from the winding drum. The incombustible sheet body is unwound and guided and lowered by the sheet relaxing body arranged in parallel with the take-up drum, and both end portions in the width direction are along the insertion holes of the guide rails on both sides, and The incombustible sheet body is smoothly lowered by the weight of the weight body at the lower end portion.
[0007]
  Further, the weight body at the lower end of the non-combustible sheet body is lowered immediately before landing on the floor surface of the shielded part, that is, the non-combustible sheet body is set in advance according to the size of the shielded part. The seat opening / closing means is stopped when the weight at the lower end of the non-combustible sheet is lowered just before being laid down on the floor of the shielded part, The driving rotation of the winding drum is stopped by the opening / closing means, and the rewinding of the noncombustible sheet body is stopped.
[0008]
  At this time, the weight body stops descending immediately before landing on the floor surface of the shielded part, so that the weight body is separated from the floor surface at a predetermined interval with a non-combustible sheet. Suspended by the body.
[0009]
  And when escaping using the slit of a nonflammable sheet body as an evacuation path, a slit is easily opened by pushing the slit wide, and it escapes easily from this opening part. In this case, that is, by pushing the slit wide, the suspended weight body is moved in the direction of pushing the slit wide, but after escaping from the opening of the slit, the weight body has the slit due to the weight of the weight body. In addition to automatically returning to the position before the expansion, the expanded slit is automatically airtightly closed.
[0010]
  Further, when the sheet relaxed body is moved down to a predetermined position from the state where the sheet relaxed body is arranged in parallel with the winding drum when the shielded part is shielded, the support of the nonflammable sheet body by the sheet relaxed body is released, and this nonflammable The sheet body is further lowered at both side ends in the width direction along the insertion holes of the guide rails on both sides and by the weight of the weight body at the lower end of the non-combustible sheet body.
[0011]
  The incombustible sheet body is lowered by a predetermined amount set in advance according to the size of the shielded portion in a state where the weight body is landed on the floor surface, and the incombustible sheet body loosens the lower part. The descent is stopped in the state.
[0012]
  Accordingly, the lower part of the non-combustible sheet body is deformed by being loosened into a substantially wave shape in a state where the weight body is landed on the floor surface, and the shielded portion is formed by the non-combustible sheet body and the weight body. Is hermetically shielded.
[0013]
  In addition, even if the incombustible sheet body that shields the shielded part is heated by fire heat such as hot air and thermally contracted upward, the incombustible sheet body is in a state of being loosened and deformed in consideration of the contraction amount. Therefore, the heat shrinkage is absorbed by the slack portion of the incombustible sheet body, and the weight body is not pulled up on the floor surface by this incombustible sheet body. Therefore, the incombustible sheet body No gap is formed between the weight body and the floor surface at the lower end of the airflow, and the airtightness between the weight body and the floor surface at the lower end of the incombustible sheet body is not formed. Holds securely and prevents the spread and spread of smoke.
[0014]
  Claim2The fireproof screen device as claimed in claim1In the described fireproof screen apparatus, the sheet relaxation body is supported by a hot-melt material that is melted by fire heat.
[0015]
  And the weight body at the lower end of the non-combustible sheet body is stopped immediately before landing on the floor surface of the shielded part, and is heated by this fire heat in a state after the slit is pushed open to escape. When the hot melt material is melted, the sheet relaxed body supported by the hot melt material is moved down to a predetermined position from the state where the sheet relaxed body is arranged on the winding drum. The support is released, and the incombustible sheet body is further lowered due to the weight of the weight body at the lower end of the incombustible sheet body at both side ends in the width direction along the insertion holes of the guide rails on both sides. The
[0016]
  The incombustible sheet body is lowered by a predetermined amount set in advance according to the size of the shielded portion in a state where the weight body is landed on the floor surface, and the incombustible sheet body loosens the lower part. The descent is stopped in the state.
[0017]
  Accordingly, the lower part of the non-combustible sheet body is deformed by being loosened into a substantially wave shape in a state where the weight body is landed on the floor surface, and the shielded portion is formed by the non-combustible sheet body and the weight body. Is hermetically shielded.
[0018]
  Claim3The fireproof screen device as claimed in claim1In the described fireproof screen device, the incombustible sheet body has an auxiliary weight body located at the upper part of the incombustible sheet body.
[0019]
  When the operation of the sheet opening / closing means is stopped and the rewinding rotation of the winding drum is stopped, the nonflammable sheet body is forcibly rewound by a predetermined amount from the winding drum due to the weight of the auxiliary weight body. It is.
[0020]
  Therefore, the lower part of the incombustible sheet body is loosened and deformed into a substantially wave shape by the auxiliary weight body in a state where the weight body is landed on the floor surface, and the incombustible sheet body and the weight The shielded part is hermetically shielded by the body.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
  First,Of the present inventionFirst related technologyWill be described with reference to the drawings.
[0022]
  As shown in FIG. 1 and FIG.First related technologyIn FIG. 1, reference numeral 1 denotes a left and right guide rail vertically fixed to both opposite side walls of the shielded portion 2 such as an entrance, an emergency exit, and a passage, and the left and right guide rails 1 face each other. Then, the front and rear guide side plate portions 4 having the opening 3 in the vertical direction opened are formed in a substantially U-shaped cross section.
[0023]
  Further, a screen box 6 into which the upper end portions of the left and right guide rails 1 are inserted is fixed to the upper side wall portion 5 such as the upper casing of the shielded portion 2, and the screen box 6 is attached to the lower end portions of the left and right sides. A left and right screen guide port 7 that is open to communicate with the insertion port 3 of the guide rail 1 is formed.
[0024]
  Further, both end portions of a winding shaft 10 having a left and right winding drum 9 on left and right bearing bodies (not shown) attached to the left and right side plate portions 8 of the screen box 6 are rotatable. A rotating wheel 11 that drives and rotates the winding shaft 10 is fixed to one end of the winding shaft 10. And the said winding drum 9 winds the below-mentioned nonflammable sheet | seat body 16 formed with the width | variety which shields the said to-be-shielded part 2, and the length of an up-down direction so that unwinding is possible. .
[0025]
  A sheet opening / closing means 12 is provided in the screen box 6. The sheet opening / closing means 12 is constituted by a motor 12a for rotating the winding drum 9 in a direction for rewinding a non-combustible sheet body 16 which will be described later, and a control means 12b for controlling the rotation of the motor 12a. The means 12b is configured to remove the nonflammable sheet body 16 when a later-described weight body 19 provided at the lower end portion of the nonflammable sheet body 16 has landed on the floor surface 18 of the shielded portion 2 and loosened the nonflammable sheet body 16. The rotation of the motor 12a is controlled so as to stop the rotation of the drum 9, and the winding drum 9 is rotated by a certain amount by the motor 12a.
[0026]
  The control means 12b is operated by a fire signal from a detection device that detects a fire or a disaster prevention center. Further, a drive wheel 14 is fixed to the output shaft 13 of the motor 12a so as to face the rotating wheel 11, and an endless rotating member 15 can freely rotate between the driving wheel 14 and the rotating wheel 11. Suspended by.
[0027]
  Next, an upper end portion of the non-combustible sheet body 16 that shields the shielded portion 2 is fixed to the winding drum 9 and is wound so as to be freely rewound. The non-combustible sheet body 16 is loosened by a predetermined amount of slack when the shielded part 2 is shielded by a width that shields the shielded part 2 with, for example, a non-combustible cloth made of glass cloth, silica cloth, or the like. Both ends in the width direction are formed as insertion portions 17 to be inserted into the insertion openings 3 of the left and right guide rails 1.
[0028]
  The incombustible sheet body 16 is lowered with the insertion portions 17 at both side ends in the width direction being inserted into the insertion ports 3 of the left and right guide rails 1 by the rewinding rotation of the winding drum 9, The shielding part 2 is shielded.
[0029]
  Further, the weight body 19 in the width direction of the nonflammable sheet body 16 that is landed on the floor surface 18 of the shielded portion 2 is provided at the lower end of the nonflammable sheet body 16. The weight body 19 is formed of a nonflammable material in a round bar shape, and is integrally attached to the lower end portion of the nonflammable sheet body 16.
[0030]
  Further, both end portions of the weight body 19 are formed as insertion portions 20 that are inserted into the insertion ports 3 of the left and right guide rails 1 so as to be movable up and down, and the outer ends of the insertion portions 20 at both end portions are the noncombustible. The sheet body 16 is continuously formed at the outer ends of the insertion portions 17 at both end portions in the width direction.
[0031]
  Next, the aboveFirst related technologyThe operation of will be described.
[0032]
  As shown in FIG. 3, the control means 12b of the seat opening / closing means 12 is actuated by a detection device that detects the occurrence of a fire or a fire signal from a disaster prevention center or the like, and the motor 12a is rotated by the control means 12b. The winding drum 9 of the winding shaft 10 rotated through the endless rolling member 15 by the output shaft 13 of the motor 12a is driven to rotate in the direction of rewinding the non-combustible sheet body 16, and this winding drum 9 The non-combustible sheet body 16 is sequentially rewound, and the non-combustible sheet body 16 has the insertion portions 17 at both ends in the width direction along the insertion openings 3 of the guide rails 1 on both sides and the non-combustible sheet body 16. The weight 16 is smoothly lowered by the weight of the weight body 19 at the lower end of the body 16.
[0033]
  Further, the weight body 19 at the lower end of the nonflammable sheet body 16 is landed on the floor surface 18 of the shielded part 2, so that the shielded part 2 is covered by the nonflammable sheet body 16 and the weight body 19. However, since the motor 12a continues to rotate at this time, the nonflammable sheet body 16 further unwinds and descends from the winding drum 9 while the weight body 19 remains on the floor surface 18. Is done.
[0034]
  Then, the non-combustible sheet body 16 is rewound by a predetermined amount set in advance according to the size of the shielded portion 2, and when the non-combustible sheet body 16 is loosened, the control means 12b is activated to operate the motor 12a. , The rotation of the winding drum 9 is stopped, and the unwinding and lowering of the nonflammable sheet body 16 is stopped.
[0035]
  Therefore, the non-combustible sheet body 16 is further unwound and lowered by a predetermined amount while the weight body 19 is landed on the floor surface 18, and is loosened into a substantially wave shape at the bottom of the non-combustible sheet body 16. The slack portion 21 in a deformed state is formed, and the shielded portion 2 is hermetically shielded by the incombustible sheet body 16 and the weight body 19.
[0036]
  Further, even when the non-combustible sheet body 16 that shields the shielded part 2 is heated by fire heat such as hot air and thermally contracted upward, the non-combustible sheet body 16 is relaxed in consideration of the contraction amount. Since the slack portion 21 is deformed, the heat shrinkage is absorbed by the slack portion 21 of the incombustible sheet body 16, and the weight body 19 is pulled up on the floor surface 18 by the incombustible sheet body 21. Is prevented.
[0037]
  Therefore, a gap through which hot air or the like flows out is not formed between the weight body 19 and the floor surface 18 at the lower end portion of the nonflammable sheet body 16, and the weight at the lower end portion of the nonflammable sheet body 16 is formed. Airtightness between the body 19 and the floor surface 18 is reliably ensured, and the spread and spread of smoke are prevented.
[0038]
  Next,An embodiment of the present invention will be described with reference to the drawings.
[0039]
  4 to 7FruitThe embodiment is the aboveFirst related technologyThe incombustible sheet body 16 has a length that is slackened when the shielded part 2 is shielded, and has a vertical slit 22 for escape, and the weight body 19 is divided by the slit 22. The non-combustible sheet body 16 is independently provided at the same level at the lower end.
[0040]
  The sheet opening / closing means 12 includes a motor 12a for rotating the winding drum 9 in a direction for rewinding the non-combustible sheet body 16, and a control means 12b for controlling the rotation of the motor 12a. The means 12b stops the rotation of the winding drum 9 when the weight body 19 at the lower end of the non-combustible sheet body 16 is lowered just before landing on the floor surface 18 of the shielded portion 2. The rotation of the motor 12a is controlled, and the winding drum 9 is rotated by a certain amount by the motor 12a. The control means 12b is activated by a fire signal from a detection device that detects a fire or a disaster prevention center.
[0041]
  In addition,First related technology, Front and rear mounting holes 23 opened in the front are formed in the side plate portions 8 on both sides of the screen box 6, and bearing units 24 are respectively provided with a plurality of bolts 25 and nuts 26 at the opening edges of the mounting holes 23 on both sides. The both ends of the winding shaft 10 of the winding drum 9 are rotatably supported by the bearing units 24 on both sides.
[0042]
  Further, the side plate portions 8 on both sides are positioned behind the mounting hole 23, that is, on the rewinding side of the non-combustible sheet body 16 that is rewound from the winding drum 9, and within a predetermined circle in a virtual circle. A plurality of bolt insertion holes 27 that are long in the vertical direction are formed at intervals, and a plurality of bolts 29 attached to the bearing unit 28 are formed in the plurality of bolt insertion holes 27 from the inside to the outside of the side plate portions 8 on both sides. Each of the plurality of bolts 29 is inserted with a washer-like hot melt material 30 such as a fuse metal which is located outside the side plate portions 8 on both sides and is melted by fire heat.
[0043]
  Further, with the plurality of bolts 29 in contact with the upper end portions of the respective bolt insertion holes 27, nuts 31 are screwed onto the plurality of bolts 29 from the outside of the side plate portions 8 on both sides and tightened. The side plate portions on both sides are formed by a plurality of bolts 29 and nuts 31 that are in contact with the upper end portions of the bolt insertion holes 27 in a state where the respective heat-melting materials 30 are located outside the side plate portions 8 on both sides and exposed. 8, bearing units 28 on both sides are respectively attached.
[0044]
  Further, there is a sheet relaxing body 33 that supports and guides the non-combustible sheet body 16 that is arranged in parallel with the winding drum 9 between the bearing portions 32 facing the bearing units 28 on both sides and is rewound from the winding drum 9. It is pivotally supported. The sheet relaxed body 33 is formed by guide rollers 34 arranged in parallel to be rotatable in parallel with the take-up drum 9, and can be freely rotated at opposite ends of the bearing portions 32 of the bearing units 28 on both sides. Each of the shaft support portions 35 is supported by a shaft.
[0045]
  The sheet relaxed body 33 is attached to the side plate portions 8 on both sides by the respective hot-melt materials 30 via the bearing units 28 on both sides so that the seat relaxed body 33 can be moved to the weight body. Each 19 supports the non-combustible sheet 16 when it is lowered just before landing on the floor surface 18 of the shielded part 2.
[0046]
  Further, the sheet loosening body 33 is caused by the fact that each of the hot melt materials 30 is melted by fire heat, so that the bolts 29 at both ends thereof fall from the upper end portion of the respective bolt insertion holes 27 to the lower end portion. The non-combustible sheet body 16 is slackened by moving down and causing the weight body 19 to land on the floor surface 18.
[0047]
  For other configurationsFirst related technologyFor the same configuration,First related technologyThe reference numerals used for are entered and their explanation is omitted.
[0048]
  Next, beforeRealThe operation of the embodiment will be described.
[0049]
  As shown in FIG. 8, the control means 12b of the seat opening / closing means 12 is actuated by a fire signal from a detection device that detects the occurrence of a fire, and the motor 12a is rotated by the control means 12b and the output of the motor 12a is output. The winding drum 9 of the winding shaft 10 that is rotated by the shaft 13 via the endless rolling member 15 is driven to rotate in the direction in which the non-combustible sheet body 16 is rewound.
[0050]
  Then, the nonflammable sheet body 16 is sequentially rewound from the winding drum 9, and the nonflammable sheet body 16 is guided and lowered by the sheet loosening body 33 provided in parallel with the winding drum 9, and the width direction The insertion portions 17 at both end portions of the both sides are smoothly lowered along the insertion openings 3 of the guide rails 1 on both side portions and by the weight of the weight body 19 at the lower end portion of the incombustible sheet body 16.
[0051]
  Further, the weight body 19 at the lower end of the non-combustible sheet body 16 is lowered immediately before landing on the floor surface 18 of the shielded part 2, that is, the non-combustible sheet body 16 is preliminarily attached to the shielded part 2. When the weight body 19 at the lower end of the non-combustible sheet body 16 is unwound just before being laid on the floor surface 18 of the shielded part 2, after being unwound by a predetermined amount set according to the size. Thus, the control means 12b is operated to stop the rotation of the motor 12a, the rotation of the winding drum 9 is stopped, and the unwinding and lowering of the non-combustible sheet body 16 is stopped.
[0052]
  At this time, the weight body 19 stops descending immediately before landing on the floor surface 18 of the shielded part 2, so that the weight body 19 opens a predetermined interval, that is, a gap 36 on the floor surface 18. In a state of being separated from each other, the sheet is suspended by a non-combustible sheet body 16 supported by the sheet relaxing body 33.
[0053]
  When the slit 22 of the incombustible sheet body 16 is escaped as an evacuation path, the slit 22 is easily opened by pushing the slit 22 wide, and the slit 22 is easily escaped from the opening.
[0054]
  In this case, that is, the weight body 19 in a suspended state is moved in a direction to expand the slit 22 by expanding the slit 22, but after the escape from the opening of the slit 22, the weight body 19 is moved to the floor surface 18. Since it is in a state of being suspended above the weight body 19, the weight body 19 is automatically returned to the position before it spreads the slit 22 by the weight of the weight body 19, and is spread. The slit 22 is automatically airtightly closed.
[0055]
  Further, when the shielded part 2 is shielded, that is, when the heat of the shielded part 2 rises in temperature, and each of the hot melt materials 30 supporting the sheet relaxing body 33 is melted by the fire heat, Each bolt 29 is dropped from the upper end portion of each bolt insertion hole 27 to the lower end portion, and the sheet relaxing body 33 supported by the bolts 29 is moved down from the state of being juxtaposed to the winding drum 9 to a predetermined position. The support of the incombustible sheet body 16 by the seat relaxing body 33 is released, and the incombustible sheet body 16 has insertion portions 17 at both side ends in the width direction along the insertion openings 3 of the guide rails 1 on both sides. Moreover, the incombustible sheet body 16 is further lowered by the weight of the weight body 19 at the lower end portion.
[0056]
  The incombustible sheet body 16 is lowered by a predetermined amount set in advance according to the size of the shielded part 2 in a state where the weight body 19 is landed on the floor surface 18. The descent is stopped in a state where a slack portion 37 having a lower portion is formed.
[0057]
  Therefore, in a state where the weight body 19 has landed on the floor surface 18 and the gap 36 is airtightly closed, the lower part of the non-combustible sheet body 16 is loosened into a substantially wave shape and deformed to form a slack portion 37. Thus, the shielded part 2 is hermetically shielded by the incombustible sheet body 16 and the weight body 19.
[0058]
  In addition, even if the non-combustible sheet body 16 that shields the shielded part 2 is heated by fire heat such as hot air and thermally contracts upward, the non-combustible sheet body 16 is loosened in consideration of the contraction amount. Since the deformed and slackened portion 37 is formed, the heat shrinkage is absorbed by the slackened portion 37 of the incombustible sheet body 16, and the weight body 19 is placed on the floor surface 18 by the incombustible sheet body 16. Therefore, a gap through which hot air or the like flows out is not formed between the weight body 19 and the floor surface 18 at the lower end of the non-combustible sheet body 16, and this non-combustible sheet body The airtightness between the weight body 19 and the floor surface 18 at the lower end of the 16 is reliably maintained, and the diffusion and spread of smoke are prevented.
[0059]
  Next, beforeRealIn the embodiment, the case where the sheet relaxing body 33 is supported by the hot melt material 30 that is melted by fire heat is described. However, the present invention is not limited to this, and the sheet relaxing body 33 is supported by a support mechanism that operates by a fire signal. The support mechanism is actuated by a fire signal from a detection device or a disaster prevention center that detects the occurrence of a fire and detects the occurrence of a fire, releases the support of the seat relaxed body 33, and moves the seat relaxed body 33 downward. Alternatively, the incombustible sheet body 16 may be lowered to cause the weight body 19 to land on the floor surface 18, and the slack portion 37 may be formed under the incombustible sheet body 16.
[0060]
  Next, in each of the above embodiments, an auxiliary weight body may be attached to the upper portion of the non-combustible sheet body 16.
[0061]
  With this configuration, the incombustible sheet body 16 is further rapidly lowered by the weight of the auxiliary weight body, and the slack portion 37 is reliably formed in the lower portion of the incombustible sheet body 16.
[0062]
  Next, a second related technique of the present invention will be described with reference to the drawings.
[0063]
  As shown in FIG.The second related technology isThe incombustible sheet body 16 is formed to have a length that is slack when the shielded part 2 is shielded, and an auxiliary weight body 38 is attached to the upper part of the incombustible sheet body 16 and the seat opening / closing means 12 is operated. The control means 12b of the seat opening / closing means 12 operates to rotate the motor 12a immediately before the non-combustible sheet body 16 is rewound and immediately before the weight body 19 at the lower end of the non-combustible sheet body 16 reaches the floor surface 18. The nonflammable sheet body 16 is unwound from the winding drum 9 by utilizing the inertia of the winding drum 9 by the weight of the auxiliary weight body 38 ((b) in FIG. 9). )) The weight body 19 at the lower end of the non-combustible sheet body 16 is landed on the floor 18 and a slack portion 37 is formed below the non-combustible sheet body 16 ((c) of FIG. 9). LikeIs.
[0064]
  Next, the aboveRelated technology andIn the embodiment, the motor 12a for rotating the winding drum 9 is provided in the screen box 6 separately from the winding drum 9. However, the present invention is not limited to this, and the motor 12a is provided in the winding drum 9. You may do it.
[0065]
  In this case, the interlocking plate is integrally fixed at a predetermined position in the winding drum 9, for example, near one side end, and the motor case is fixed in the winding drum 9 so as to face the interlocking plate. The motor 12a fixed to one bracket in the screen box 6 is inserted into the motor case, the center of the interlocking plate is fixed to the output shaft 13 of the motor 12a, and the other end of the winding drum 9 is fixed. The drum shaft in the axial direction protruding integrally with the part is rotatably supported on the other bracket in the screen box 6 via a bearing.
[0066]
  With this configuration, the winding drum 9 is supported on the output shaft 13 of the motor 12a through the interlocking plate at one side end, and the drum shaft at the other end is freely rotatable by the other bracket. Is pivotally supported. And by the rotation of the output shaft 13 of the motor 12a, the winding drum 9 is rotated in the direction of rewinding the incombustible sheet body 16 and the direction of winding the incombustible sheet body 16 via the interlocking plate. .
[0067]
  In addition,Related technology andIn the embodiment, the case where the motor 12a is fixed to the motor case fixed in the winding drum 9 has been described. However, the present invention is not limited to this, and the motor 12a is not limited to the motor case. The end may be fixed to a fixed base fixed to one bracket in the screen box 6. In this case, one end of the take-up drum 9 can be freely rotated via a bearing on the outer periphery of the base end of the motor 12a. And a central portion of the interlocking plate fixed to a predetermined position in the winding drum 9, for example, near one side end, is fixed to the output shaft 13 of the motor 12 a. The drum shaft at the other end may be rotatably supported on the other bracket in the screen box 6 via a bearing.
[0068]
  With this configuration, the winding drum 9 has one end rotatably supported on the outer peripheral portion of the base end of the motor 12a via a bearing, and the drum shaft at the other end is rotated by the other bracket. It is supported freely. And by the rotation of the output shaft 13 of the motor 12a, the winding drum 9 is rotated in the direction of rewinding the incombustible sheet body 16 and the direction of winding the incombustible sheet body 16 via the interlocking plate. .
[0069]
  In addition,Related technology andIn an embodiment, a clutch may be provided in the winding drum 9 instead of the interlocking plate, and the output shaft 13 of the motor 12a may be connected to the clutch.
[0070]
  And saidRelated technology andAn embodiment, that is, a motor 12a is provided in the winding drum 9Related technology andAccording to the embodiment, the screen box 6 can be reduced in size as compared with the configuration in which the motor 12a is provided in the screen box 6 separately from the winding drum 9, and the structural parts such as the upper casing of the shielded part 2 It is possible to improve the degree of accommodation with respect to.
[0071]
  Further, the control means 12b of the seat opening / closing means 12 is activated by a detection device that detects the occurrence of a fire or a fire signal from the disaster prevention center, etc., and the motor 12a is rotated by the control means 12b, and the output of the motor 12a is output. When the winding drum 9 is driven to rotate in the direction of rewinding the non-combustible sheet body 16 via the interlocking plate at the shaft 13,First related technologyAnd the incombustible sheet body 16 is rewound similarly to the case of the said embodiment.
[0072]
  And, when the incombustible sheet body 16 is lowered,First related technologyAs in the case of the above-described embodiment, the incombustible sheet body 16 is in a state in which the incombustible sheet body 16 is loosened and deformed by being substantially wave-shaped in the lower portion to form the slack portions 21 and 37. The shielded part 2 is airtightly shielded by the body 19.
[0073]
  Next, the aboveRelated technology andIn the embodiment, the motor 12a stops rotation when the weight body 19 at the lower end of the non-combustible sheet body 16 has landed on the floor 18 and slackened the non-combustible sheet body 16, and the non-combustible sheet. The case where the rotation is stopped at the time when the weight body 19 at the lower end of the body 16 is lowered just before landing on the floor 18 has been described, but the motor 12a may stop rotating step by step. Good.
[0074]
  In this case, for example, the rotation of the motor 12a is temporarily stopped when the weight body 19 at the lower end of the non-combustible sheet body 16 has landed on the floor surface 18, and the motor 12a is rotated again after a certain period of time. The rotation of the motor 12a may be stopped when the non-combustible sheet body 16 is loosened, and before the weight body 19 at the lower end of the non-combustible sheet body 16 is landed on the floor surface 18, Preferably, the rotation of the motor 12a is temporarily stopped when the weight body 19 is lowered to a height position where a person can pass under the weight body 19, and the motor 12a is rotated again after a certain period of time. When 19 reaches the floor 18, the rotation of the motor 12a is temporarily stopped, and after a certain period of time, the motor 12a is rotated again to loosen the non-combustible sheet 16 and the rotation of the motor 12a. May be stopped.
[0075]
  At this time, it is preferable to pattern-set the rotation speed of the motor 12a in the control means 12b, and to control the rotation speed of the motor 12a by the control means 12b to lower the incombustible sheet body 16 stepwise. Detection means such as a limit switch or a magnet switch are provided at predetermined positions in the vertical direction of the guide rail, and the motor 12a is controlled by detecting the incombustible sheet body 16 or the weight body 19 lowered by these detection means. Thus, the non-combustible sheet body 16 may be lowered stepwise.
[0076]
  Then, by lowering the incombustible sheet body 16 in stages, it is easy to evacuate and escape lag can be prevented.
[0077]
【The invention's effect】
ContractClaim1According to the invention, the winding drum is rotated in the direction of rewinding the non-combustible sheet body having the slit, and the rotation of the winding drum is stopped when the weight body descends immediately before landing on the floor surface. Since the sheet opening / closing means for rotating the winding drum by a certain amount is provided, the rotation of the winding drum is stopped when the weight body is lowered just before landing on the floor surface by the sheet opening / closing means. Since the weight body does not land on the floor during escape, the slit of the non-combustible sheet body can be easily pushed out as an evacuation route, and the slit can be easily escaped from the opening. it can. In addition, since the weight body does not land on the floor even after escape, the slit opened by the weight body can be surely closed in an airtight manner.
[0078]
  Further, when the incombustible sheet body is unwound and lowered, the incombustible sheet body can be guided and smoothly lowered by the sheet relaxed body, and the incombustible material stopped immediately before landing on the floor surface by the sheet relaxed body. The sheet-relaxing body moves down when the shielded part is shielded after escaping, and the weight body is landed on the floor surface so that the non-combustible sheet body is securely slackened. The shielded part can be shielded, and even if this incombustible sheet body is heated by fire heat such as hot air and thermally contracted upward, the slack part of the incombustible sheet body causes the lower end part of the incombustible sheet body to Without lifting the weight body on the floor surface, the airtightness between the weight body and the floor surface at the lower end of the non-combustible sheet body can be reliably maintained, so that smoke diffusion and fire spread Can be provided.
[0079]
  Claim2According to the invention, since the sheet relaxed body is supported by the hot melt material melted by fire heat, the heat melt material supporting the sheet relaxed body is surely melted by the fire heat whose temperature has risen. The sheet relaxed body supported by the hot melt material can be instantaneously moved down from a state where the sheet relaxed body is arranged on the winding drum to a predetermined position. Therefore, the nonflammable sheet body is reduced by the weight of the weight body. Furthermore, the weight body can be lowered and lowered, and the lower part of the non-combustible sheet body can be loosened while the weight body is landed on the floor surface.
[0080]
  Claim3According to the invention, since the non-combustible sheet body has the auxiliary weight body located at the upper part of the non-combustible sheet body, the non-combustible sheet body is lowered by the weight of the auxiliary weight body, and this non-combustible The lower part of the sheet body can be securely loosened.
[Brief description of the drawings]
FIG. 1 of the present inventionFirst related technologyIt is a front view of the fireproof screen apparatus which shows.
FIG. 2 is a side view of the same.
FIG. 3 is a flowchart for explaining the operation.
FIG. 4 of the present inventiononeIt is a front view of the fireproof screen apparatus which shows embodiment.
FIG. 5 is a side view of the same as above.
FIG. 6 is a cross-sectional view of the attachment portion of the sheet relaxing body.
FIG. 7 is a side view of the same.
FIG. 8 is a flowchart for explaining the operation.
FIG. 9 shows the present invention.Second related technologyIt is explanatory drawing which shows.
[Explanation of symbols]
        1 Guide rail
        2 Shielded part
        3 insertion slot
        9 Winding drum
        12 Seat opening / closing means
        16 Non-combustible sheet
        18 Floor
        19 Weight body
        22 Slit
        30 Heat melting material
        33 Seat relaxed body
        38 Auxiliary weight

Claims (3)

A guide rail fixed relative to both sides of the shielded part and facing each other, and an insertion port formed in the vertical direction; a winding drum provided rotatably between the guide rails on both sides; and A length that is wound around the take-up drum so as to be freely rewound and is slackened when the both-side end portions in the width direction are inserted into the guide rail insertion openings on both side portions and are shielded. In a fireproof screen device comprising a nonflammable sheet body that is formed and has a slit for escape, and a weight body that is provided at a lower end portion of the nonflammable sheet body and is landed on the floor surface of the shielded portion,
The winding drum is rotated so as to stop the rotation of the winding drum when the winding drum is rotated in a direction to rewind the non-combustible sheet body and the weight body is lowered just before landing on the floor surface. A sheet opening / closing means for rotating the fixed amount of the nonflammable sheet body, and a lowering of the nonflammable sheet body that is positioned on the winding drum on the rewinding side of the nonflammable sheet body so as to be movable downward and is rewound from the winding drum. And a sheet relaxed body that moves down when the shielded part is shielded and causes the weight body to land on the floor surface and loosen the non-combustible sheet body,
A fireproof screen device characterized by that. The sheet relaxed body is supported by a hot melt material that is melted by fire heat.
The fireproof screen device according to claim 1 . The incombustible sheet body has an auxiliary weight body located at the upper part of the incombustible sheet body.
The fireproof screen device according to claim 1 .

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