JP4789763B2 - Walk-through fireproof screen - Google Patents

Description

The present invention hangs down from the ceiling side and partitions the interior space of the building, so that the fire side and the non-fire side can be surely cut off even when subjected to wind pressure generated during a fire, and the building is suspended from the ceiling side. In particular, the present invention relates to a so-called walk-through fireproof screen in which an evacuation path can be formed by providing a slit that can be opened and closed.

  When installing a walk-through type fireproof screen in a wide frontage, several fireproof / flameproof screens or sheets are connected. At that time, if you try to supplement the screen by overlapping the screen, there are two screens. There were places where the sheets overlapped, and the winding step became unstable due to the thickness difference, and wrinkles were likely to occur, and it was difficult to wind up while maintaining the horizontal in the frontage direction. Therefore, as a fire protection device that prevents the spread of fire and the spread of smoke by blocking the interior space of the building on the fire side and the non-fire side in the event of a fire, it is used for fire prevention compartments that use non-combustible or fire-resistant screens. Screen shutters are known.

  The above walk-through fireproof screen is a fabric made of inorganic fibers such as silica cloth, alumina, stainless steel, etc., which is suspended from the ceiling side and divides the interior space of the building, and is rich in incombustibility or fire resistance. Those that do not lose light, and those that are coated with a flame retardant material on one side to substantially eliminate breathability and improve smoke shielding performance are used. Normally, it is wound on a winding shaft placed under the ceiling or under the beam, but in the event of a fire, it is suspended from the ceiling side, and its lower end reaches the floor surface. Shut off on the non-fire side. (For example, Patent Document 1 and Patent Document 2). Walk-through fireproof screens are required to be thinner and lighter, but when wind pressure is generated during a fire, the screen swells like a sail and the lower end rises, leaving a gap between the floor and the floor. May occur. If this gap is generated, the fire side and the non-fire side communicate with each other, so that there is a problem in that the smoke shielding / flameproof performance is lowered. In order to solve this problem, there has been disclosed a technique in which a lower end portion of a screen and a portion where the lower end portion opposes when being suspended are adsorbed and fixed by magnetic force (Non-patent Document 1 and Patent Document 1).

Summary of Annual Meeting of the Architectural Institute of Japan (Hokkaido) August 1995, (left column, page 13, line 19 to page 14, left column, line 2, FIGS. 1-3). Japanese Patent Laid-Open No. 10-155925 (publication page 3, right column, lines 24 to 28, FIG. 2) Japanese Patent Laid-Open No. 2000-80866 (publication page 2, left column, lines 45-49, page 4, left column, lines 6-10, FIGS. 1 and 5)

Walk-through fireproof screens are required to be thinner and lighter, but when wind pressure is generated during a fire, the screen swells like a sail and the lower end rises, creating a gap between the floor and the floor. Therefore, the screen must be slackened more than the floor landing in anticipation of the floating. If this gap is generated, the fire side and the non-fire side communicate with each other, so that the smoke shielding / flameproof performance and the like deteriorate. In conventional fireproof screens, in which the left and right screens are abutted at the connecting part, the winding of the sheet is not stable and a gap is likely to occur between the main body sheet and the door sheet, and flames and smoke are generated from the gap. It sometimes leaked out. In order to solve this problem, the bottom surface of the screen or the lower end of the screen is used to fix the lower end portion of the screen and the portion where the lower end portion opposes when suspended by magnetic force as in Non-Patent Document 1 and Patent Document 1. Not only is it easy to arrange in a part, but the magnetic force may disappear due to the temperature rise due to the fire only with the magnetic force. In addition, when the evacuee passes through the slit-shaped escape path formed on the screen, the lower diameter portion of the screen is easily displaced because the large-diameter side inclined earlier is wound. If the lower end of the screen moves, the magnetic force is reduced, and the original adsorption / fixed state cannot be easily restored, and a gap is formed between the floor and the smoke shielding performance and the like. The problem caused by the wrinkling of the seat is that the seat may be broken in the worst case if the seat plate is tilted (the dust does not fit) during winding. In particular, since it has been wound for a long time until an emergency, it will be wrinkled, making it difficult to open and close the walkthrough, especially when it is closed.
The present invention provides a connecting part of the main body sheet, an auxiliary sheet is provided inside and outside the main body sheet, and a mechanism that closes the gap between the main body sheet and the guide mechanism that opens and closes the door is provided. The purpose is to provide a so-called walk-through fire-proof screen shutter that can block the side and the non-fire side with certainty, and is provided with a slit or a superposed curtain that can be opened and closed on the non-fire side in a part of the screen. And

In order to achieve the above object, the present invention comprises a non-combustible or fire-resistant screen that hangs down from the ceiling side and defines an interior space of a building, and the screen alone is the width of the interior space of the building. The first main body sheet and the second main body sheet having an arbitrary width that does not reach the upper limit are connected, and both main body sheets are abutted with at least one connecting portion near the center or the left or right of the interior space of the building and connected. An inner auxiliary seat and an outer auxiliary seat that have a width sufficient to cover the gap between the door ends of the main body sheets and the inside and outside thereof, rotate to the evacuation path side when opened, and cover the connecting portion when closed. a walk-through refractory screen consisting lowered drooping, said inner auxiliary sheet was lowered dripping inside the two body sheets, to push the outer auxiliary sheet that covers the connecting portion to evacuate the roadside What a open side of the auxiliary sheet of the inner to open by rotating in the same direction, the first door sheet portion is formed obliquely lower corner portion of the second body sheet toward the second the said connection portion toward under the corner portion of the body sheet, to open by rotating in the opposite direction to the first door sheet portion during pushing into the evacuation path side connecting portion toward said first body sheet second door sheet portion is formed under the corner portion, the order at a position including a connecting portion at intervals to form said evacuation passage, a first rotatable in opposite directions in a horizontal or nearly horizontal plane A weight bar and a second weight bar are provided, and the lower end of the first door seat portion is fixed to the first weight bar, and the lower end of the second door seat portion is fixed to the second weight bar. the first weight bar and the second The pivot support portion of Eitoba a walkthrough refractory screen, characterized in that when the screen closed and biases in the closing direction to each other after the evacuation completion annexed automatic closing mechanism for partitioning the internal space of the building. Moreover, this invention is good also as winding the said inner side auxiliary | assistant sheet | seat and the said outer side auxiliary | assistant sheet | seat on the winding axis | shaft different from the winding axis | shaft of the said both main body sheet | seat , and stabilizing the winding of both said main body sheet | seats .

Further, the present invention, the automatic closing mechanism of the first door sheet portion, a coil spring which is mounted under compression between the pins provided on the pin provided on the seat plate of the inner auxiliary seat bottom first waitbar the have; and between the rising edge end portion and the first weight bar seat plate position forming the evacuation passage connecting the guide arm, lowered sag open end side of the first body sheet and when forming the evacuation passage by fixing the lower edge of said inner auxiliary sheet, provided with the first weight bar horizontally rotating at slightly upward, it a walkthrough refractory screen, wherein Also good.

Further, the present invention, the first weight bars are hooked by the compressed state by a coil spring between the pin provided in the pin provided on the seat plate of the inner auxiliary seat bottom first weight bar, The coil spring is biased in the opening direction when the first door seat portion of the inner auxiliary seat is opened to some extent, and when the screen is closed, the first weight bar is folded in a direction in close contact with the stopper body. by pulling in the closing direction filled-in, met walkthrough refractory screen is characterized in that so as to sandwich the second weight bar fixed to the second door sheet portion lower edge of the second body sheet May be .

Further, according to the present invention, the automatic closing mechanism that urges the second door seat portion in the closing direction after the evacuation is finished is a seat that hits the rotating portion of the second door seat portion and the other end on the evacuation path forming side. attached to flaps hinged with the torsion spring provided on the rising edges of the plate, and a horizontal pin on one hinge leaf of the flaps hinge, stepped portions, adjustment plate, and tightening the second slightly upward using screws the weight bar may be a walk-through refractory screen configured to rotate.

Further, the present invention, the automatic closing mechanism, for causing said second waitbar through laterally substantially horizontally rotated to have the tension in the second door sheet and the inner auxiliary sheet, has a step portion is formed on the rotation-side leaf flaps hinges, a guide mechanism comprising an adjusting plate provided near the root of the weight bar to adjust the level of the door leading to the weight bar; the inner auxiliary Regardless of the presence or absence of the seat, the second weight bar does not go down below the horizontal position, it operates freely when closed, and when opening the door, both weight bars rotate slightly upward and in opposite directions. is allowed, said inner auxiliary sheet is actuated horizontally without walkthrough fire screening when sandwiched the inner auxiliary sheet is characterized in that so as to operate in the upper direction following the inner auxiliary sheet It may be.

  The fireproof screen is normally wound around a winding shaft disposed under the ceiling or under the beam and is lowered when a fire occurs. When the seat plate at the lower end of the screen reaches the floor surface due to this descending, the internal space of the building is surely partitioned by the screen. The fire screen suspended from the ceiling is held by guide rails on both sides and seats on the bottom, and even if the screen is subjected to wind pressure due to a fire, the lower end is not displaced or lifted, and is in contact with the floor. Retained. In the event of a fire, an evacuation path is formed by opening the connecting part of the screen and the door sheet part, and after the refugee passes, the auxiliary seat and connecting part are provided by an automatic closing mechanism provided on the weight bar support part of the door sheet part. And the door sheet | seat part is closed and the lower end part of a screen is hold | maintained in the state which contacted the floor surface and divided the building space.

FIG. 1 is a perspective view of a walk-through fireproof screen showing an embodiment of the present invention, and FIG. 2 is a perspective view of a state in which a guide rail is not shown and a door seat and an auxiliary sheet are half-opened to form an evacuation path. 3 and 3 are enlarged sectional views of the screen driving unit.
As shown in the figure, the nonflammable or fireproof screen device 1 includes a plurality of first main body sheets 2 and second main body sheets 3 having arbitrary widths that are suspended from the ceiling and do not reach the width of the building interior space alone. The inner and outer auxiliary seats 4 and 5 having a sufficient width to cover the front and back of the connecting portion 10 while the main body sheet is abutted by at least one connecting portion 10 near the center or the left or right of the interior space of the building. The interior space of the building (the passage in the building, the corridor, or the opening between the rooms) is partitioned. The inner auxiliary seat 4 covers the connecting portion 10 when closed, and the refugee pushes the outer auxiliary seat 5 inward (non-fire side) from the fire site side to rotate in the direction of forming the middle of the evacuation path. The door sheet portion 4a and the second main body sheet 3 on the side facing the first main body sheet 2 are sufficiently close together with the door sheet portion 4a by rotating in the opposite direction to the door sheet portion 4a. And a door sheet portion 3a that enables formation of an escape path with a wide width.

  When a plurality of main body sheets 2 and 3 are connected, an auxiliary sheet having a sufficient width to cover the front and back of the connecting portion is suspended to form a polymerized film in order to close the gap between the connecting portions 10. When a sheet is wound on one winding shaft, two sheets overlap each other, and the winding becomes unstable due to the level difference of the sheet. Therefore, as shown in FIGS. 2 and 3, winding shafts 9a and 9b for the auxiliary sheets 4 and 5 are arranged in parallel inside and outside the main body sheet separately from the winding shaft 9 of the main body sheets 2 and 3, and the main body sheet is arranged. The winding of each sheet is stabilized by separating from the winding.

The rotation support portion of the first seat weight bar 12 in the door seat portion 4a is provided with an automatic closing mechanism 20 that biases in the closing direction after the evacuation is completed. As described in detail with reference to FIGS. 4 and 5, this mechanism has vertical weight bars 12 and 13 erected on the upper side of the seat plate 6 excluding the evacuation path 40, and the middle of the evacuation path width from the end of the first main body sheet 2. together to fix the first lower end of the main body sheet 2 make a length of the vertical side 12a reaching the second vertical side 13 of the length of the main body sheet 3 from the other end of the evacuation path 40 to the other end The lower end of the second body sheet 3 is fixed upright. A first weight bar 12 is rotatably attached to one vertical side 6a of the seat plate 6 sandwiching the escape path, and a second weight bar 13 is attached to the other vertical side 6b of the seat plate 6. That mounting a first weight bar 12 at the bottom of the door seat portion 4a of the inner auxiliary sheet 4 with a hinge 27 to the left edge of the vertical side 6a of the seat plate 6 sandwiching the evacuation path 40, seat plate sandwiching the evacuation path 40 The weight bar 13 is fixed to the lower part of the door sheet portion 3a of the second main body sheet 3 by using a hinge 20 at the end of the right vertical side 6b of 6.

One of the coil springs 28 is latched by a pin 22 on a plate 21 fixed to a seat plate, and the other is a latch that is slidably inserted into a long hole 24 of a plate 23 provided in the first weight bar 12. (When the weight bar 12 and the coil spring 28 operate freely, the coil spring is a mechanism for assisting the opening and closing of the auxiliary seat 4). It is biased in the opening direction.
The first weight bar 12 is latched by a coil spring 28 and is folded in a direction in close contact with the stopper main body 16a when the screen is closed, so that the second door sheet portion of the second main body sheet 3 is folded. The second weight bar 13 fixed to the lower edge of 3a is sandwiched to close the gap. When opening the door sheet portion, the weight bars of the door sheet portion and the auxiliary sheet are rotated while being inclined upward with respect to the horizontal direction around the support portion. Since the normal hinge rotates only in the horizontal direction, the opening and closing operation is unstable. However, the opening and closing operation can be smoothly performed between the seat plate 6 and the weight bars 12 and 13. Further, the first weight bar 12 (FIG. 5) is supported by a slide mechanism (the long hole 24 and the locking pin 27), and can be moved into all directions (horizontal and vertical directions) by an arm spring so that the first weight bar 12 is in a fixed position when closed. Since it is difficult to return, a guide arm 15 is additionally provided.

When the internal space is partitioned by the lowering of the main body sheets 2 and 3 at the time of fire inside the building, the second main body sheet 3 is pressed by pressing the connecting portion 10 of the main body sheet via the outer auxiliary sheet 5. The first door sheet portion 3a formed at the left end portion of the door and the second door sheet portion 4a of the inner auxiliary seat 4 rotate in opposite directions to form an evacuation path 40, and after the evacuation ends, the door The seat portion 3a and the door seat portion 4a are automatically closed to divide the interior space of the building, but the rotation support portions at the bottom of each door seat portion are urged toward each other in the closing direction after the evacuation is completed. Automatic closing mechanisms 20 and 30 for partitioning the internal space are provided respectively.

As shown in FIGS. 4 and 5, the automatic closing mechanism 20 of the second door seat portion 4a includes a pin 22 that stands on the rotation fulcrum portion of the first weight bar 12 and a pin 27 that is provided on the slide plate 25a. A coil spring 28 which is shrunk between the stopper hinge 14, the hinge plate 14 a, the hinge shaft 26, the stopper body, the stopper arm 16 b, the support plate 17, and the guide arm 16 including the pins 18 and 19. The first weight bar 12 is attached to the rising side of the seat plate 6 excluding the escape path 40. A first weight bar that horizontally rotates slightly upward with a length that reaches approximately half of the width of the evacuation path by fixing the lower edge of the first auxiliary sheet hanging down to the open end side of the first main body sheet 2 12 is provided.

More specifically, the first weight bar 12 is latched by a coil spring 28 that is contracted between a pin 22 that stands near the pivot point and a pin 27 that stands near the center of the weight bar 12. . The coil spring 28 is urged in the opening direction when the auxiliary seat 5a is opened to some extent, and when the screen is closed, the weight bar 12 is folded in a direction in close contact with the stopper main body 16a and pulled in the closing direction . The second weight bar 13 fixed to the lower edge of the second door sheet portion 3a of the second main body sheet 3 is sandwiched.

The automatic closing mechanism 30 of the second door seat portion 3a is, as shown in an enlarged view in FIG. 6 and FIG. 7, on the rotating portion of the door seat portion 3a. attached to flaps hinged 29 with the torsion spring 33 provided on the rising edge 6b, and a horizontal pin 34 on one hinge leaf 29b of the flaps hinged, stepped portion 36, slightly upward using the adjustment plate 37 and clamping screw 38 The second weight bar 13 is assembled to rotate. A step portion 36 formed on the rotation-side leaf 29b of the quad hinge 29 in order to cause the second weight bar 13 passed in the horizontal direction to rotate substantially horizontally to give the door seat portion 3a tension; In order to adjust the door level of the weight bar 13, it has a guide mechanism 35 including an adjustment plate 37 provided near the base of the weight bar 13, and is not lowered below a horizontal position regardless of the presence or absence of an auxiliary seat. It operates freely in the upward direction, when opening the door, rotate both weight bars slightly upward and in opposite directions, and operates horizontally if there is no auxiliary seat, and follows the seat when the seat is sandwiched Operates upward. Further, a long hole or a loose hole 39 (FIG. 7) having a slightly elliptical shape in the vertical direction is formed in one leaf 29b of the quad hinge 29, and the rotation support side of the second weight bar 13 is tightened with a screw 38. As described above, the step portion 36 is formed near the rotation axis of one leaf 29b of the quad hinge 29, and the adjustment plate 37 is brought into contact with the step portion to adjust the level of the door end of the weight bar. I am doing so.

FIG. 4 is an enlarged perspective view showing the rotating state of the weight bar fixed to the lower part of each seat when the door seat portion 3a of FIG. 2 and the door seat portion 4a of the auxiliary sheet 4 are opened halfway. By pushing the connecting part 10 of the main body sheets 2 and 3 to the evacuation side, the door sheet part 3a and the door sheet part 4a of the inner auxiliary seat 5 are rotated in opposite directions, and the door sheet parts 3a and 4a are respectively opened halfway. Thus, as shown by the white arrow in FIG. 4, an evacuation path 40 is formed to enable evacuation to the inside of the building. After the evacuation is over, both the door seat portions 3a and 4a are closed by the operation of the automatic closing mechanisms 20 and 30 attached to the respective pivot shafts of the door seat portion 3a and the door seat portion 4a of the inner auxiliary seat 5, An internal space such as a passageway, hallway, or opening is defined so that the fire-side flame does not flow into the inside (evacuation side).

5 is an enlarged perspective view of the weight bar 12 of the door seat portion 4a as viewed from the direction of arrow A in FIG. 4, and FIG. 6 is an enlarged perspective view of the weight bar 13 of the door seat portion 3a as viewed from the direction of arrow B in FIG. 7 and 7 are enlarged perspective views of the weight bar 13 of the door sheet portion 3a shown in FIG.
In the present invention, the operation of the walk-through part which is an opening / closing door is made smooth and the gap is closed. When the door (door sheet) is opened, the weight bars 12 and 13 of the door sheet and the auxiliary sheet rotate while tilting upward with respect to the horizontal direction around the support portion. The opening / closing operation was unstable because the rotation was only in the direction. Therefore, the present invention incorporates a mechanism for smoothly operating between the seat plate 4 and the weight bars 12 and 13. One weight bar 12 is movable in all directions by an arm spring provided with a slide mechanism. However, since it is difficult to return to a fixed position only when it is universally movable, a guide arm 16 is further provided. The other weight bar 13 is provided with a shaft on one blade (leaf) of the quad hinge 29 so as to be able to rotate horizontally and vertically rotate upward. That is, as shown in FIGS. 6 and 7, the weight bar 13 is not lowered below the horizontal position by the stopper (adjustment plate 36), and is rotated by itself without a sheet. When the evacuation door is closed, the slits (joint portions 10) are closed by the auxiliary sheets 5 and 6 hanging down inside and outside. A spring (torsion spring) 33 is attached to the auxiliary seat supporting hinge shaft 32 so that the auxiliary seat 3a can be reliably closed even when sagging occurs in the auxiliary seat 3a.

The left and right main body sheets 2 and 3 that temporarily close an arbitrary position in a passage or corridor in the building are placed almost horizontally on a weight bar 12 that passes through in the lateral direction / width direction in order to stretch the door sheet portion 4a of the auxiliary seat 4 Guide means 35 for rotating is provided (FIGS. 4, 6, and 7). The rotation support portion of the weight bar 13 has a free shaft at the connecting portion between the hinge 15 and the weight bar 13, but a stopper (adjustment plate) 37 is provided on the rotation support portion of the weight bar 13 to determine whether or not there is a sheet. Regardless of the position, it is not lowered below the horizontal position, and is freely operated upward when closed, and the weight bar 13 is operated horizontally and upward when the door is opened. If there is no sheet, it operates horizontally, and when the sheet is sandwiched, it operates in the upward direction following the opening of the sheet centered on the crease. When the seat shutter is closed, the weight bar 12 is brought into contact with the guide main body so that the guide arm 16 is folded, and at the same time, the weight bar 12 is pulled in the closing direction to sandwich the weight bar 13.

  The fireproof screen hangs down the left and right main body sheets 2 and 3 having an arbitrary width that does not reach the width of the interior section of the building (passage, hallway, opening, etc.) alone, and is located at a position near the center or the left or right of the section. At the same time, the auxiliary sheets 5 and 6 having a sufficient width to cover the abutting end are hung down inside and outside the connecting portion 10. A plurality of main body sheets 2 and 3 suspended in the width direction of the internal space, and main body sheets 2 and 3 in which a walk-through slit is formed at a connecting portion 10 between adjacent main body sheets, and front and rear surfaces near the slit Covering auxiliary sheets 5 and 6 inside and outside

  FIG. 3 shows an enlarged cross-sectional view of the screen drive unit. A drive unit 8 is arranged in the ceiling of the building, and a winding shaft 9 common to the left and right main body sheets 2 and 3 is provided in the housing. Brackets 11a and 11b are fixed obliquely below the take-up shaft 9 across the sheet insertion path to store the take-up shafts 9a and 9b of the inner and outer auxiliary sheets 5 and 6, respectively. When the main body sheet and the auxiliary sheet are wound around one winding shaft, there is a place where one sheet and two sheets overlap, and the winding becomes unstable due to the level difference of the sheet, but the inner and outer sides of the winding shaft 9 of the main body sheet The auxiliary sheet winding shafts 9a and 9b are provided in parallel with each other, and the winding is stabilized by separating from the winding of the main body sheet.

  A screen having a non-combustible or fireproof flexible screen that hangs down from the ceiling side and divides the interior space of the building, and is formed of a plurality of main body sheets that are suspended in the width direction of the interior space. And main body sheets 2 and 3 in which walk-through slits are formed at connecting portions (butting portions) 10 between adjacent main body sheets, and inner and outer auxiliary sheets 5 and 6 covering the front and back surfaces in the vicinity of the slits. Yes. The screen 1 for fire protection compartment shown in the figure is usually provided with inner and outer auxiliary sheets 4 that cover the slits formed by the left and right main body sheets 2 and 3 constituting the screen and the connecting portions (butting portions) 10 of the main body sheets 2 and 3. 5 are wound around winding shafts 9a and 9b connected to a drive unit 8 disposed on a ceiling, a beam, etc., and both side edges of the main body sheets 2 and 3 are guided by guide rails 7 and 7 when a fire occurs. While guiding, it is lowered together with the auxiliary sheets 4 and 5 inside and outside and suspended toward the floor surface.

In the conventional apparatus, the weight bar or the seat weight is unstable only when it is rotated in the horizontal direction. However, in the present invention, one door seat portion 4a moves horizontally, but the other door seat portion 3a opens. In this case, the weight bar 13 is smoothly moved as a tilting movable piece that lifts upward while moving horizontally (FIG. 6). That is, an automatic closing mechanism 20 or 30 is attached to each of the auxiliary seat 4a and the door seat portion 3a to be opened and closed , and one weight bar 12 is a slide composed of a plate 23, a long hole 24, a link 26 and a coil spring or an arm spring 28. The mechanism pivots substantially in a horizontal plane, but it is difficult to return to a fixed position when closed, so a guide arm 16 (FIG. 5) is provided between the hinge plate 14a and the weight bar 12.

The details of the second automatic closing mechanism 30 will be described with reference to FIGS. 6 and 7. The second weight bar 13 is supported through screws 37 and 37 on a hinge blade (leaf) 31a fixed to the end of the seat plate 6a. The torsion spring 33 is wound around the hinge shaft 32 and the root portion of the weight bar 13 is supported by the guide means 35 through the horizontal pin 34 on the rotating leaf. The other blade (leaf) 31ba of the hinge is moved horizontally and lifted upward by the step 36, the adjusting plate or the stopper 37. The weight bar 13 does not fall below the horizontal position due to the stopper action of the adjustment plate 37 (FIGS. 6 and 7). In the event of a fire, for example, when the rotation restriction of the take-up shaft is released by the action of a fire detection switch (not shown), the screen is caused by its own weight such as the seat plate 6, the weight bars 12 and 13, the main body sheets 2 and 3. , And the lower end reaches the floor, thereby demarcating the internal space of the building and preventing the spread of fire in the building and the diffusion of smoke.

8A and 8B are plan views of the fireproof screen of the present invention in use, where FIG. 8A is a cut-off state, FIG. 8B is a plan view of a pass-through state during evacuation, and FIG.
When opening the closed evacuation door, when the door sheet portions 3a and 5a that overlap the inside of the connecting portion 10 are pushed open as shown by the arrows in FIG. 8A, as shown in FIG. The weight bars 12 and 13 rotate in opposite directions around the hinge shafts 15 and 32, and the lower half of the door seat portions 3a and 4a is opened to pass through during the evacuation to an initial state. Further, as shown in FIG. 8C, the door sheet portions 3a and 4a are rotated to open the evacuation path 40 by opening the abutting portion (connecting portion) 10 of the main body sheet, and pass through to the inside of the building (non-fire side). It will be ready.

The functional characteristics of the above embodiment are listed as follows.
(1) When connecting a plurality of main body sheets 2 and 3, when the gap generated in the connecting portion 10 is closed by the inner and outer auxiliary sheets 4 and 5, the winding of the main body sheets 2 and 3 and the auxiliary sheets 4 and 5 is stabilized. To.
(2) The lower part of the door sheet part 4a formed at the corner of one auxiliary sheet 4 and the door sheet part 3a formed at the corner of the second main body sheet 3 are substantially horizontal and opposite to each other. The rotatable first and second weight bars 12 and 13 are arranged to face each other.
(3) The first weight bar 12 is latched and connected by the coil spring 28 so that the door seat portion 4a of the auxiliary seat can freely operate when the door is opened and closed.
(4) Although the coil spring 28 is connected by a spring receiver, the receiving portion is a slide mechanism (the long hole 19a and the pin 27), and the first weight bar 12a and the coil spring 28 operate freely. Further, the spring is a mechanism that assists in opening and closing the auxiliary seat 4 and works in the closing direction when closed, and is biased in the opening direction when opened to some extent.
(5) When the seat shutter is closed, the first weight bar 12 is brought into contact with the guide main body 16 and folded in a direction in close contact with the stopper arm 16a, and at the same time, by pulling the first weight bar 12 in the closing direction, The weight bar 12 was sandwiched (FIGS. 4 and 5).
(6) A door sheet guide means 35 is provided. When supported by the quad hinge 31, the tip of the second weight bar 13 is a free axis, but the quad hinge 31 which is the support portion of the weight bar 13 is provided with an adjustment plate 37 corresponding to a stopper piece, Regardless of the presence or absence of the sheet, the weight bar 13 never falls below the horizontal position. When the door is closed, it is freely rotated upward about the horizontal pin 35 passed through the quad hinge 31. When the door is opened, the weight bar 13 is operated in a slightly tilted upward direction. That is, if there is no door sheet part, it operates horizontally, and when it is sandwiched between the second door sheet part 3a and the first door sheet part 4a, the second weight bar 13 follows the second door sheet part 3a. Is rotated upward.
(7) The seat plate 6 and the second weight bar 13 are each screwed using a hinge. In other words, the weight bar 13 is connected to one leaf of the hinge 31 to the rising side of the seat plate with a screw 34, and a loose hole 39 having a slightly oval shape in the vertical direction is formed in the other leaf of the hinge 31. The rotation support side of the weight bar 13 is screwed 34, and a step portion 36 is formed on one leaf rotation support side of the hinge 31, and an adjustment plate 37 fixed to the weight bar 13 side is brought into contact with the step portion. By doing so, the level of the door end of the weight bar 13 can be adjusted (FIGS. 4, 6, and 7).

  As described above, the present invention is a walk-through fireproof screen that hangs down from the ceiling side and divides the interior space of the building, but butts the ends of a plurality of fireproof screens that hang down from the winding device of the ceiling, Alternatively, a vertical slit is formed by superimposing only a required width, and an auxiliary sheet that covers the slit is provided on one of the side surfaces. The fire screen suspended from the ceiling is held by guide rails on both sides and seats on the bottom, and even if the screen is subjected to wind pressure due to a fire, the lower end is not displaced or lifted, and is in contact with the floor. Retained. In the event of a fire, an evacuation path is formed by opening the connecting part of the screen and the door sheet part, and after the refugee passes, the auxiliary seat and connecting part are provided by an automatic closing mechanism provided on the weight bar support part of the door sheet part. And the door sheet | seat part is closed and the lower end part of a screen is hold | maintained in the state which contacted the floor surface and divided the building space. Also, when the people who have remained at the fire site are evacuated all at once after the screen is lowered, or when the fire is extinguished and returns to the normal state, the winding shaft is driven and the screen and the auxiliary seat are moved to the ceiling side. It can be stored in the inner space to unlock the interior space.

The perspective view of the walk-through fireproof screen which shows embodiment of this invention. The perspective view of the escape route formation state of this invention fireproof screen. The expanded sectional view of the screen winding drive part of a figure. The enlarged perspective view which shows the rotation state of the weight bar fixed to both sheet | seat lower parts, when the door sheet | seat part and auxiliary sheet | seat of FIG. The enlarged perspective view which looked at the weight bar of the auxiliary | assistant sheet | seat from the A arrow direction of FIG. The enlarged perspective view which looked at the weight bar of the door sheet | seat from the B arrow direction of FIG. The expanded perspective view which looked at the weight bar of the door sheet | seat from the C arrow direction of FIG. The fireproof screen of the present invention is shown in a state in which (a) is in a shut-off state, (b) is an initial state in which the lower half of the main body sheet connecting part opens to form an evacuation path when accused, and (c) is a connecting part. FIG. 6 is a plan view showing a state in which a lower part of the door is greatly separated and can pass through an evacuation.

DESCRIPTION OF SYMBOLS 1 Fireproof screen apparatus 2 1st main body sheet | seat 3 2nd main body sheet | seat (screen)
3a Second door seat 4a Auxiliary seat 5 inside first door seat 4 Outside seat 6 Seat plate 6a, 6b Seat plate rising edge 7 Guide rail 8 Drive unit 9, 9a, 9b Winding shaft 10 Main body Seat connecting or abutting portions 11a, 11b Bracket 12 First weight bar 13 Second weight bar 12a Stopper cover 12b Cover 14 Stopper hinge 14a Hinge plate 15 Hinge shaft 16 Guide arm 16a Arm body 16b Stopper arm 17 Support plate 18 , 19 Pin 20, 30 Automatic closing mechanism 21, 23 Plate 22 Pin 24 Slot 25 Slide pin 25a Slide plate 26 Hinge shaft 27 Locking pin 28 Coil spring 29 Cad hinge 29a, 29b Hinge leaf 31 Hinge shaft 32 Torsion spring 33 Pin 34 Horizontal pin 35 Guide means 36 steps Part 37 adjustment plate 38 tightening screw 39 slot 40 escape route

Claims (6)

It has a non-combustible or fireproof screen that hangs down from the ceiling and separates the interior space of the building.
The screen, the first body sheet and the second body sheet of an arbitrary width that does not reach the width of the building interior space alone is associative, at least one lateral deviation approximately the center or left or right both body sheet building interior space The connecting portion has a width sufficient to cover the gap between the door ends of the two main body sheets and the inside and outside thereof, and rotates toward the evacuation path when opened, and the connecting portion when closed. It is a walk-through fireproof screen that hangs down the inner auxiliary seat and the outer auxiliary seat that cover
The inner auxiliary seat hanging down on the inner side of both the main body sheets is opened on the inner auxiliary seat so that the outer auxiliary seat covering the connecting portion is rotated and opened in the same direction by pushing the outer auxiliary seat into the escape path . A first door sheet portion is formed at an oblique lower corner portion near the second main body sheet ;
Wherein the said connecting portion closer under the corner portion of the second body sheet, to open by rotating in the opposite direction to the first door sheet portion during pushing into the evacuation path side, said first body sheet A second door sheet portion is formed in the lower corner portion near the connecting portion of
In order to form the evacuation passage at an interval at a position including the connecting portion, a first weight bar and a second weight bar that are rotatable in opposite directions in a horizontal or substantially horizontal plane are provided. Fixing the lower end of the door sheet portion of 1 to the first weight bar, and fixing the lower end of the second door sheet portion to the second weight bar;
An automatic closing mechanism for partitioning the interior space of the building by biasing each other in the closing direction when the screen is closed and after the evacuation is completed is attached to the rotation support portion of the first weight bar and the second weight bar. Walk-through fireproof screen characterized by.
Walkthrough of claim 1 which is adapted to stabilize the winding of the two body sheet is wound around the other winding shaft and the auxiliary sheet and the take-up shaft of the outer auxiliary sheet the both body sheet of the inner Fireproof screen.
The automatic closing mechanism of the first door sheet portion has a coil spring which is mounted under compression between the pins provided on the pin provided on the seat plate of the inner auxiliary seat bottom first weight bar; the evacuation and between the rising edge end of the seat plate of the position for forming a tract between the first weight bar connected by guide arms, the first of said inner auxiliary sheet was lowered sag open end side of the main body sheet walkthrough refractory screen according to claim 1, in forming the evacuation passage by fixing the lower edge, provided with the first weight bar horizontally rotating at slightly upward, wherein the of.
Said first weight bars are hooked by the compressed state by a coil spring between the pin provided in the pin provided on the seat plate of the inner auxiliary seat bottom first weight bar, the coil spring is the inner When the first door sheet portion of the auxiliary seat is opened to some extent, it is urged in the opening direction, and when the screen is closed, the first weight bar is folded in the direction in close contact with the stopper main body in the closing direction. by pulling, walkthrough refractory screen according to claim 3, characterized in that so as to sandwich the second weight bar fixed to the second door sheet portion lower edge of the second body sheet.
An automatic closing mechanism that urges the second door seat portion in the closing direction after evacuation is provided at the rising side of the seat plate corresponding to the other end on the evacuation path forming side at the rotating portion of the second door seat portion. attached to flaps hinged with the torsion spring, and rotates the second weight bar slightly upwards with the flaps horizontal pin on one hinge leaf hinge, stepped portions, adjustment plate, and clamping screw The walk-through refractory screen according to claim 1 configured as described above.
The automatic closing mechanism, for causing said second waitbar through laterally substantially horizontally rotated to have the tension in the second door sheet and the inner auxiliary sheet, turning side flaps hinged has a step portion is formed in the leaf, the guide mechanism comprising an adjusting plate provided near the base of the second weight bar to adjust the level of the door leading to the weight bar; whether the inner auxiliary sheet not drop below irrespective second weight bar horizontal position, freely operate in the upward direction when closed, is rotated in the opposite directions to each other slightly in upward both waitbar when opening the door, the 2. The walk according to claim 1, wherein when the inner auxiliary sheet is not provided, the walk is performed horizontally, and when the inner auxiliary sheet is sandwiched, the inner auxiliary sheet is moved upward to follow the inner auxiliary sheet. Through fireproof Lean.

Images