JP2018139786A - Smokeproof panel and assembling method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a configuration and assembling method allowing anyone regardless of a learning level or the like to accurately and smoothly perform work of applying tension to a smokeproof sheet for preventing occurrences of crease and bending and retaining appropriate tension after the construction in a smokeproof panel for smoke barrier.SOLUTION: A smokeproof panel 1 includes: a smokeproof sheet 25 having flexibility; an upper frame 22 for fixing an upper end of the smokeproof sheet 25; a clamping member (fixing member) 61 for fixing the lower end of the smokeproof sheet 25; a lower frame 23 in which the clamping member 61 clamping the smokeproof sheet 25 is stored; an energizing member 65 energizing the clamping member 61 to the lower side in the inside of the lower frame 23; and a screw (holding member) 70 capable of moving the clamping member 61 to be energized by the energizing member 65 from a pressing position pressing it upward to a retraction position for releasing or weakening the pressing force to the clamping member 61.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a smoke-proof panel used for a smoke-proof wall.

  Conventionally, in a smoke proof wall that forms a smoke proof section with a smoke proof panel having a flexible smoke proof sheet, many of the non-flammable smoke proof sheets are rectangularly fixed with a frame material. Has been put on the market. Even in a structure in which the four sides are fixed by a frame, the smoke-proof sheet may be elongated due to a change in the atmospheric temperature, and wrinkles and deflection may occur in the smoke-proof sheet. Moreover, although it has some tension by the dead weight of a smoke-proof sheet | seat, a big flutter may arise by the influence of a wind etc. depending on an installation place. In order to prevent the occurrence of such a phenomenon, a structure having a structure in which the smokeproof sheet is pulled directly or indirectly to apply tension to the smokeproof sheet is known. For example, Patent Literature 1 and Patent Literature 2 disclose this type of smoke proof wall.

  Patent Document 1 describes a smoke proof wall having a structure in which a biasing member that applies tension to a smoke proof sheet is incorporated in a lower frame located at a lower end portion. Patent Document 2 describes a configuration in which a smoke-proof sheet is stretched in a horizontal direction through an end fitting on a vertical frame and tension is applied to the smoke-proof sheet by an urging member (spring) disposed in the lower part.

JP 2013-146471 A Japanese Patent Laying-Open No. 2015-029634

  In the configuration described in Patent Document 1 and Patent Document 2, the urging member (spring) is arranged in the lower frame and is configured to apply tension to the smoke-proof sheet. It is necessary to insert a biasing member so that tension is appropriately applied to the smoke-proof sheet after assembly. In order to insert the urging member later, some play is required in the lower frame as the urging member, but if the play is large, there is a possibility that sufficient tension cannot be applied to the smokeproof sheet. It is difficult to set and causes artificial variation. For example, although an urging member is inserted depending on the skill level of the operator's work, it can be considered that the tension by the urging member is not properly applied to the smoke-proof sheet. There was room for improvement in terms of improving assembly so that the worker can stably apply the smoke-proof sheet regardless of the skill level.

  The present invention, in the smoke-proof panel of the smoke-proof wall, anyone can accurately and smoothly perform the tension application work to the smoke-proof sheet for preventing the occurrence of wrinkles and bending regardless of the proficiency level, An object of the present invention is to provide a configuration and an assembling method in which an appropriate tension is maintained even after construction.

  A smoke-proof panel (for example, a smoke-proof panel 1, 201, 301 to be described later) used for a smoke-proof wall, and a flexible smoke-proof sheet (for example, a smoke-proof sheet 25 to be described later); An upper frame (for example, upper frame 22 described later) for fixing the upper end of the smoke sheet, a fixing member (for example, clamping members 61 and 361 described later) for fixing the lower end of the smoke-proof sheet, and the smoke-proof sheet A lower frame (for example, a lower frame 23 described later) in which the fixing member to which the fixing member is fixed is housed, and a biasing member (for example, a biasing described later) for biasing the fixing member downward in the lower frame. And a holding member (for example, a screw 70 described later) that temporarily holds the fixing member urged by the urging member upward.

  The holding member is preferably configured to be movable from a pressing position that presses the fixing member upward to a retracted position that releases or weakens the pressing.

  A screw hole (for example, a screw hole 66 described later) is formed at a position corresponding to the biasing member of the lower frame, and the holding member is fastened from the screw hole. It is preferable that the fixing member is a screw (for example, a screw 70 to be described later) that pushes the fixing member upward and is loosened from the lower frame and moves to the retracted position.

  The holding member is preferably disposed below the urging member at the pressing position.

  A method for assembling a smoke-proof panel (for example, a smoke-proof panel 1, 201, 301 described later) used for a smoke-proof wall, and a lower end portion thereof is fixed by a fixing member (for example, a clamping member 61, 361 described later). A lower frame (e.g., urging members 65 and 365 described later) for urging the fixing member downward is provided on the smoke proof sheet (e.g., smoke proof sheet 25 described later). A step of attaching a lower frame 23) to be described later, a step of temporarily holding the fixing member biased by the biasing member upward by a holding member (for example, a screw 70 to be described later), and at least the smoke-proof sheet And a step of releasing temporary holding of the fixing member by the holding member in a state where an upper frame (for example, an upper frame 22 described later) is fixed to the upper end of the smoke-proof panel.

  According to the smoke-proof panel of the present invention and the method for assembling the same, anyone can accurately and smoothly apply tension to the smoke-proof sheet to prevent the occurrence of wrinkles and bending regardless of their proficiency level, Appropriate tension is maintained after construction.

It is a figure which shows the state before tension | tensile_strength provision to the smoke-proof sheet | seat in the smoke-proof panel which concerns on one Embodiment of this invention. It is a cross-sectional view which shows the state before the tension provision to the smoke-proof sheet in the smoke-proof panel of this embodiment, and is the sectional view on the AA line of FIG. It is a longitudinal cross-sectional view which shows the state before the tension | tensile_strength provision to the smoke-proof sheet in the smoke-proof panel of this embodiment, and is the BB sectional drawing of FIG. It is a schematic diagram which shows the tension | tensile_strength provision apparatus before tension | tensile_strength provision inside the lower frame of this embodiment. It is a figure which shows the state after tension | tensile_strength provision to the smoke-proof sheet | seat in the smoke-proof panel of this embodiment. It is a longitudinal cross-sectional view which shows the state after the tension | tensile_strength provision to the smoke-proof sheet | seat in the smoke-proof panel of this embodiment, and is B'-B 'line sectional drawing of FIG. It is a schematic diagram which shows the tension | tensile_strength provision apparatus after tension | tensile_strength provision inside the lower frame of this embodiment. It is the schematic diagram which showed the procedure of the assembly method of the smoke-proof panel of this embodiment. It is a longitudinal cross-sectional view of the smokeproof sheet of this embodiment. It is a cross-sectional view of the smokeproof panel of the first modification. It is a cross-sectional view of the smokeproof panel of the second modification. It is a longitudinal cross-sectional view which shows the state before the tension provision to the smoke-proof sheet | seat in the smoke-proof panel of a 3rd modification. It is an expanded longitudinal cross-sectional view which shows the state before tension provision of the tension | tensile_strength provision apparatus of a 3rd modification. It is a schematic diagram which shows the tension application apparatus before tension | tensile_strength provision inside the lower frame of a 3rd modification, and is CC sectional view taken on the line of FIG. It is a longitudinal cross-sectional view which shows the state after tension provision to the smoke-proof sheet | seat in the smoke-proof panel of a 3rd modification. It is an expanded longitudinal cross-sectional view which shows the state after tension provision of the tension | tensile_strength provision apparatus of a 3rd modification. It is a schematic diagram which shows the tension | tensile_strength provision apparatus after tension | tensile_strength provision in the lower frame inside a 3rd modification, and is the C'-C sectional view taken on the line of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The smoke-proof panel 1 of this embodiment is disposed between a ceiling, a wall, or a pillar inside a building, and is used for a smoke-proof wall that forms a smoke-proof section. 25 is configured to be able to apply tension. First, the smoke-proof panel 1 before giving tension to a smoke-proof sheet | seat is demonstrated.

  FIG. 1 is a view showing a state before a tension is applied to a smoke-proof sheet 25 in a smoke-proof panel (smoke-proof panel) 1 according to an embodiment of the present invention. In FIG. 1, a single smoke proof panel 1 is shown. However, a plurality of smoke proof panels 1 are suspended from the ceiling in the lateral direction and configured as smoke proof walls.

  As shown in FIG. 1, the smoke-proof panel 1 is a panel constituted by a smoke-proof sheet 25 surrounded by four sides by a left and right vertical frame 21, an upper frame 22 and a lower frame 23. The smokeproof sheet 25 is made of a nonflammable and flexible material, and a transparent or translucent sheet is used.

  FIG. 2 is a cross-sectional view showing a state before the tension is applied to the smoke-proof sheet 25 in the smoke-proof panel 1 of the present embodiment, and is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 2, the left and right vertical frames 21 are hollow inside. A slit 35 communicating with the hollow portion is formed on the side surface (expected surface) of the vertical frame 21. The end of the smokeproof sheet 25 in the horizontal direction is inserted into the hollow portion of the vertical frame 21 through the slit 35.

  A retaining member 31 that is formed larger than the slit 35 is disposed in the hollow portion of the vertical frame 21. The retaining member 31 includes a first fixing member 32 having a substantially U-shaped cross section and a second fixing member 33 having a substantially L-shaped cross section. By being sandwiched in the thickness direction (expected direction) of the smoke-proof panel 1 by the first fixing member 32 and the second fixing member 33 at one end in the horizontal direction of the smoke-proof sheet 25 inside the vertical frame 21 Even if the smokeproof sheet 25 receives wind pressure, the smokeproof sheet 25 is prevented from falling off the vertical frame 21.

  The retaining member 31 of the present embodiment has a width in the expected direction (a width obtained by combining the first fixing member 32 and the second fixing member 33) so that it substantially matches the width in the expected direction of the hollow portion of the vertical frame 21. Configured. More specifically, the side corresponding to the U-shaped opening of the first fixing member 32 faces the outside in the expected direction, and the end portion is in contact with the inner wall of the vertical frame 21. The tip of the portion corresponding to the L-shaped end of the second fixing member 33 is in contact with the inner wall of the vertical frame 21 (the inner wall opposite to the inner wall with which the first fixing member 32 contacts). In addition, a bent portion 34 that is bent inward is formed at an end portion of the slit 35 of the present embodiment on the first fixing member 32 side, and a tip portion of the bent portion 34 is formed on a prospective surface of the first fixing member 32. In contact.

  The vertical frame 21 is fixed to a wall or other smoke proof panel (not shown). For example, when the smoke proof panels 1 are arranged in the horizontal direction, the vertical frame 21 on one side of the smoke proof panel 1 arranged so as to face the wall is fixed to the wall, and the vertical frame 21 on the other side is adjacent. It will be fixed to the smokeproof panel 1. In addition, when the smoke-proof section is formed by a single long smoke-proof panel in the horizontal direction, the vertical frame 21 on one side of the smoke-proof panel 1 is fixed to the wall (or column) and the vertical frame on the other side. 21 is also fixed to another wall (or column). Alternatively, each of the vertical frames 21 on both sides of the smoke-proof panel 1 may be fixed to an adjacent smoke-proof wall.

  The lateral tension (tension resistance) of the smokeproof sheet 25 is adjusted by the width of the smokeproof panel 1 (the longitudinal lengths of the upper frame 22 and the lower frame 23). In this embodiment, generation | occurrence | production of a wrinkle, a bending, etc. is suppressed because the smoke-proof sheet | seat 25 is pulled by appropriate tension with the left and right vertical frames 21.

  The upper frame 22 is fixed to the ceiling 5 via a ceiling frame, a fastening member such as a hook member or a screw (all not shown). The upper frame 22 includes an upper frame body 41 and an upper frame sheet holding portion 42 that sandwich the upper end portion of the smoke-proof sheet 25 in the expected direction. The upper frame 22 may be directly fixed to the ceiling 5.

  FIG. 3 is a longitudinal cross-sectional view showing a state before the tension is applied to the smoke-proof sheet 25 in the smoke-proof panel 1 of the present embodiment, and is a cross-sectional view taken along the line BB in FIG. FIG. 4 is a schematic view showing a tension applying device 60 before applying tension inside the lower frame 23 of the present embodiment. FIG. 4 schematically shows the inside of the lower frame 23 as seen from the front side of the smoke-proof panel 1.

  As shown in FIG.3 and FIG.4, the inner side of the lower frame 23 is hollow. A slit 50 communicating with the hollow portion is formed on the upper surface (expected surface) of the lower frame 23. The lower end portion of the smokeproof sheet 25 is inserted into the hollow portion of the lower frame 23 through the slit 50.

  A tension applying device 60 for applying tension to the smoke-proof sheet 25 is disposed in the hollow portion of the lower frame 23. The tension applying device 60 includes a clamping member 61 fixed to the lower end portion of the smoke-proof sheet 25, an urging member 65 that urges the clamping member 61 downward inside the lower frame 23, and the clamping member 61 upward. And a screw 70 to be pressed.

  The clamping member 61 according to the present embodiment includes a first fixing member 71 formed in a substantially U-shaped cross section and a second fixing member 72 formed in a plate shape. When the first fixing member 71 and the second fixing member 72 sandwich the lower end of the smokeproof sheet 25 in the expected direction, the smokeproof sheet 25 is prevented from falling off the lower frame 23. A bent portion 74 that is bent inward is formed at the end portion of the slit 50 of the present embodiment on the first fixing member 71 side, and the tip portion of the bent portion 74 contacts the expected surface of the first fixing member 71. ing. The clamping member 61 corresponds to the width of the smokeproof sheet 25 and is a long member that extends along the longitudinal direction of the lower frame 23 as a whole.

  As shown in FIG. 4, the biasing member 65 of the present embodiment is a leaf spring, and one end portion of the biasing member 65 is fastened by a fastening member such as a screw (not shown). It is fixed to the upper surface of the member 61). In this embodiment, the biasing member 65 is fixed at one side of the leaf spring, so that the position of the biasing member 65 inside the lower frame 23 is fixed, and the other end portion is the first during elastic deformation. The urging member 65 is allowed to deform by moving on the upper surface of the fixing member 71.

  The upper portion of the urging member 65 is in contact with the ceiling portion of the hollow portion of the lower frame 23, and the clamping member 61 is pressed downward by the elastic force of the urging member 65.

  The screw 70 is fastened from a screw hole 66 formed in the bottom surface of the lower frame 23, and the tip thereof is in contact with the lower surface of the first fixing member 71 (the clamping member 61). As shown in FIG. 1, two (a plurality) of urging members 65 of the present embodiment are arranged at intervals in the longitudinal direction of the lower frame 23, and the screw 70 is also elongated in accordance with the position of the urging member. Two are arranged at intervals in the direction.

  In a state where the tip of the screw 70 is in contact with the first fixing member 71 (the clamping member 61), the biasing member 65 is bent more than the natural state (a state in which the length in the vertical direction is short). . The position of the screw 70 in this state is set as a pressing position. As shown in FIGS. 1 to 4, in a state where the screw 70 is in the pressing position, the urging member 65 is contracted from the natural state and the clamping member 61 is pushed up. In this state, the tension is not applied to the smoke-proof sheet 25 by the tension applying device 60, or a tension is applied that is weaker than the strength set for removing wrinkles and deflection. By moving the screw 70 to the retracted position where the support of the first fixing member 71 (the clamping member 61) is released, downward tension by the tension applying device 60 is applied to the smoke-proof sheet 25.

  Next, a state where the tension is applied by the tension applying device 60 will be described. FIG. 5 is a view showing a state after the tension is applied to the smoke-proof sheet 25 in the smoke-proof panel 1 of the present embodiment. FIG. 6 is a longitudinal cross-sectional view showing a state after the tension is applied to the smoke-proof sheet 25 in the smoke-proof panel 1 of the present embodiment, and is a cross-sectional view taken along line B′-B ′ in FIG. 5. FIG. 7 is a schematic diagram showing the tension applying device 60 after applying tension inside the lower frame 23 of the present embodiment. 5 to 7 show a state in which the screw 70 as the holding member is in the retracted position.

  As shown in FIGS. 5 to 7, by removing the screw 70 from the lower frame 23 using a tool or the like, the support of the clamping member 61 is released, and the clamping member 61 is moved downward by the elastic force of the biasing member 65. Move (see arrow in FIG. 7). As the sandwiching member 61 moves downward, the lower end of the smoke-proof sheet 25 is pulled downward (see FIG. 1). By pulling the smoke-proof sheet 25 downward, wrinkles and bending of the smoke-proof sheet 25 are also eliminated. The tension applied to the smoke-proof sheet 25 applied by the tension applying device 60 can be set mechanically and accurately depending on the shapes of the urging member 65, the holding member 61, and the lower frame 23, and therefore the tension varies depending on the product. Is also prevented.

  Next, the enforcement method of the smoke-proof panel 1 of the said embodiment is demonstrated. FIG. 8 is a schematic diagram showing the procedure of the method for assembling the smoke-proof panel 1 of the present embodiment. The arrow of the chain line in FIG. 8 shall show a procedure. FIG. 9 is a longitudinal sectional view of the smokeproof sheet 25 of this embodiment. In the following description, the same or similar components as those in the above embodiment may be described with the same reference numerals even though they are not shown. For example, the second fixing member 72 of the clamping member 61 shown in FIG. 9 is formed in a substantially L shape, but has the same function as the second fixing member 72 of the above embodiment formed in a plate shape. The same reference numerals are attached.

  As shown in FIG. 8, a clamping member 61 is disposed at the lower end, a retaining member 31 is disposed on both the left and right sides, and a smokeproof sheet 25 is prepared. The urging member 65 is fixed to the upper surface of the sandwiching member 61 of the smokeproof sheet 25 with two intervals in the longitudinal direction. Then, as indicated by the dotted line arrow 101, the lower frame 23 is covered so as to cover the entire longitudinal direction of the clamping member 61. As described above, the lower frame 23 is formed with the slit 50 through which the smoke-proof sheet 25 can pass, so that the holding member 61 is slid and inserted inside the lower frame 23 while the smoke-proof sheet 25 is held. Is possible.

  Next, as shown by a chain line with reference numeral 102, the screw 70 disposed in the screw hole 66 of the lower frame 23 is tightened. An urging member 65 is positioned vertically above the screw 70. Subsequently, the vertical frame 21 is slid from the upper side to the left and right ends of the smokeproof sheet 25 as indicated by a dotted line 103. At this time, the end of the smoke-proof sheet 25 passes through the slit 35 and is slid so that the retaining member 31 enters the inside of the vertical frame 21. In addition, the retaining member 31 is fixed to the smokeproof sheet 25 in advance before the procedures of reference numerals 101 to 103.

  Next, as indicated by a chain line with reference numeral 104, the upper end of the smoke-proof sheet 25 is sandwiched between the upper frames 22 while being pulled upward. More specifically, a screw (not shown) is fastened with the upper frame body 41 and the upper frame sheet holding portion 42 sandwiching the upper end portion of the smokeproof sheet 25, and both sides of the upper frame 22 are mechanically or bonded. Then, it is combined with the vertical frame 21 by an appropriate means. As a result, the four circumferences of the smokeproof sheet 25 are surrounded by the frame material. You may fasten the corner part of a frame material with a tapping hole and a tapping screw. This state is the state of the smoke-proof panel 1 before the tension application shown in FIGS. It should be noted that the method of connecting the upper frame and the lower frame to the vertical frame as the horizontal frame of the smoke-proof wall may be so-called horizontal winning or vertical winning.

  And as shown by the arrow of the code | symbol 105, the screw 70 is removed and the tension | tensile_strength by the tension application apparatus 60 is provided to the smoke-proof sheet 25. FIG. This state is the state of the smoke-proof panel 1 after applying the tension shown in FIGS. Thus, by finally removing the screw 70 and applying an urging force by the urging member 65, downward tension can be applied to the smokeproof sheet 25.

According to the embodiment described above, the following effects can be obtained.
The smoke-proof panel 1 includes a flexible smoke-proof sheet 25, an upper frame 22 that fixes the upper end of the smoke-proof sheet 25, and a clamping member 61 as a fixing member that fixes the lower end of the smoke-proof sheet 25. The lower frame 23 in which the clamping member 61 that sandwiches the smokeproof sheet 25 is accommodated, the urging member 65 that urges the clamping member 61 downward in the lower frame 23, and the urging force by the urging member 65 And a screw 70 as a holding member that temporarily holds the clamping member 61 to be held upward.
Further, in the method of assembling the smoke-proof panel 1, the lower frame 23 in which the urging member 65 for urging the clamping member 61 downward is attached to the smoke-proof sheet 25 whose lower end is fixed by the clamping member 61. A step, a step of pressing the clamping member 61 urged by the urging member 65 upward with a screw 70 as a holding member, and the upper frame 22 is fixed to the upper end portion of the smoke-proof sheet 25 and the vertical frame on the left and right And the step of moving the screw 70 so that the tension of the urging member 65 is applied to the smoke-proof sheet 25 by releasing or weakening the pressing of the clamping member 61 in a state where 21 is fixed.

  Accordingly, it is possible to reliably and easily apply an appropriate tension to the smoke-proof sheet 25, and no tension variation occurs regardless of who is assembled regardless of the level of proficiency in the work. Since the assembling work of the smoke-proof panel 1 becomes easy, the working time can be shortened. After assembly, the pressure applied by the screw 70 is released and an appropriate tension is always applied, so that it is basically unnecessary to adjust the tension after mounting. Even if the smoke-proof sheet 25 expands or contracts due to aging or environmental changes, the assembly work of the smoke-proof panel 1 that can always apply a constant tension to the smoke-proof sheet 25 can be realized with a simple configuration.

  In the present embodiment, the screw 70 as the holding member releases or weakens the pressing of the clamping member 61 from the pressing position that presses the clamping member 61 biased by the biasing member 65 upward, and the smoke-proof sheet 25. The urging member 65 is configured to be movable to a retreat position where a tension is applied by the urging force of the urging member 65.

  As a result, the tension can be appropriately applied to the smoke-proof sheet 25 simply by moving the screw 70 from the pressing position to the retracted position, and the assembly work can be performed without fail.

  Further, in the present embodiment, a screw hole 66 is formed at a position corresponding to the urging member 65 of the lower frame 23, and the screw 70 fastened to the screw hole 66 is inside the lower frame 23 at the pressing position. The clamping member 61 is pushed upward, and the fastening is loosened from the lower frame 23 to move to the retracted position.

  Thereby, the timing which provides tension | tensile_strength by the easy operation | work of fastening of the screw | thread 70 and cancellation | release of fastening can be adjusted. Further, from the viewpoint of aesthetics, it is preferable to remove the screw 70 after the tension is applied, but it is also possible to adjust the strength of the tension applied to the smoke-proof sheet 25 by adjusting the degree to which the screw 70 is loosened. In the configuration as in this embodiment, if the state in which the screw 70 is slightly loosened from the pressing position is maintained, the amount by which the smokeproof sheet 25 is pulled becomes relatively small, and the screw 70 is completely removed from the lower frame 23. Then, the amount by which the smokeproof sheet 25 is pulled relatively increases. As a result, the degree of wrinkles and deflection can be adjusted.

  In the present embodiment, the screw 70 is disposed below the urging member 65 at the pressing position.

  Accordingly, the pressing force of the screw 70 can be efficiently transmitted to the clamping member 61, the clamping member 61 can be accurately held at an appropriate upper position, and the smokeproof sheet 25 is tensioned before the tension is applied. Can be reliably prevented, and assembly work can be performed more smoothly.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not restrict | limited to the above-mentioned embodiment, It can change suitably. In the following description of modifications of the above embodiment, the same or similar configurations as those in the above embodiment may be denoted by the same reference numerals and description thereof may be omitted.

  It is not limited to the structure of the said embodiment, The structure of the vertical frame 21 can also be changed suitably. FIG. 10 is a cross-sectional view of the smoke-proof panel 1 of the first modification. As shown in FIG. 10, in the smoke proof panel 1 of the modified example, an urging member (plate spring) 210 that urges the first fixing member 32 (the clamping member 61) outward in the left-right direction is provided inside the vertical frame 21. Be placed. By this urging member 210, the smokeproof sheet 25 is in a state where tension can be applied also in the left-right direction. Even if there is a tolerance of the installation location or parts, an appropriate tension can be applied in the left-right direction of the smoke-proof sheet 25 by the biasing member (leaf spring) 210.

  In addition, the configuration of the vertical frame 21 and the retaining member 31 disposed inside the vertical frame 21 can be changed as appropriate. FIG. 11 is a cross-sectional view of the smoke-proof panel 1 of the second modification. As shown in FIG. 11, the vertical frames 221 on both the left and right sides of the smoke-proof panel 201 of the second modified example are formed with hollow portions on the inside thereof, and slits 235 that communicate with the hollow portions are formed on the side surfaces (expected surfaces). Is done. The retaining member 231 disposed inside the vertical frame 221 includes a block-shaped first fixing member 232 and a plate-shaped second fixing member 233, and is prevented by the first fixing member 232 and the second fixing member 233. The left and right end portions of the smoke sheet 25 are each sandwiched in the expected direction.

  Moreover, in the said embodiment, although the leaf | plate spring excellent in the space saving property is used as the urging | biasing member 65, it is not limited to this structure, Applying the elastic member of another shape which has a restoring force is applied. You can also. Next, a third modification using an urging member having a configuration different from that of the embodiment and the modification will be described.

  FIG. 12 is a longitudinal sectional view showing a state before the tension is applied to the smoke-proof sheet 25 in the smoke-proof panel 301 of the third modified example. FIG. 13 is an enlarged longitudinal sectional view showing a state before the tension is applied by the tension applying device 360 of the third modified example. FIG. 14 is a schematic diagram showing a tension applying device 360 before applying tension in the lower frame 23 of the third modified example. 12 to 14 show a state in which the screw 70 as the holding member is in the pressing position, and a clamping member 361 described later is pushed upward.

  As shown in FIG. 12, the smoke-proof panel 301 of the third modified example is different from the configuration of the above-described embodiment in the configuration of the tension applying device 360 disposed inside the lower frame 23.

  As shown in FIGS. 13 and 14, the tension applying device 360 includes a clamping member 361 that is fixed to the lower end portion of the smoke-proof sheet 25 and an urging force that biases the clamping member 361 downward inside the lower frame 23. A member 365 and a screw 70 that pushes up the clamping member 61 upward are provided.

  The sandwiching member 361 includes a first fixing member 371 having a substantially L-shaped cross section and a second fixing member 72 formed in a plate shape. The first fixing member 371 and the second fixing member 372 are fixed in a state where the lower end portion of the smokeproof sheet 25 is sandwiched in the expected direction. An accommodation portion 367 that accommodates the biasing member 365 is formed on the opposite side of the sandwiching surface of the smoke-proof sheet 25 of the first fixing member 371.

  The urging member 365 is a so-called coil spring, and is disposed in the accommodating portion 367 of the first fixing member 371 in a state where the axial direction faces the thickness direction (expected direction) of the smoke-proof panel 301. A screw 366 that penetrates the first fixing member 371 and the second fixing member 372 in the expected direction is fastened to the clamping member 361. The tip of the screw 366 reaches the accommodating portion 367 of the first fixing member 371 from the second fixing member 372 side, and is inserted through the inside of the biasing member 365. A plurality of biasing members 365 are arranged at intervals in the longitudinal direction (two biasing members 365 are shown in FIG. 14).

  The biasing member 365 has one end in contact with the inner wall forming the accommodating portion 367 of the first fixing member 371, and the other end (upper end) is the ceiling portion of the hollow portion of the lower frame 23. The clamping member 361 is pressed downward by the elastic force of the biasing member 365.

  The tip of the screw 70 is in contact with the lower surface of the first fixing member 371 (the clamping member 361), as in the above embodiment. Two screws 70 of the third modified example are also arranged at intervals in the longitudinal direction in accordance with the position of the urging member 365. The screw 70 functions as a holding member, and the clamping member 361 is pushed upward.

  Next, a state where a tension is applied by the tension applying device 360 will be described. FIG. 15 is a longitudinal sectional view showing a state after tension is applied to the smoke-proof sheet 25 in the smoke-proof wall of the third modified example. FIG. 16 is an enlarged longitudinal sectional view showing a state after the tension is applied by the tension applying device 360 of the third modified example. FIG. 17 is a schematic diagram showing a tension applying device 360 after applying tension in the lower frame 23 of the third modified example, and is a cross-sectional view taken along line C′-C in FIG. 16.

  As shown in FIGS. 15 to 17, when the screw 70 as the holding member is removed from the lower frame 23 and moved to the retracted position, the pressing on the clamping member 361 is released. The sandwiching member 361 that has lost the support of the screw 70 moves downward by the elastic force of the biasing member 365 and is in a state in which tension is applied to the smoke-proof sheet 25.

  The smoke-proof panel 301 of the third modified example described above can also be assembled by the same method as in the above embodiment, and has the same effect as in the above embodiment. Furthermore, the configurations of the above-described embodiment and modification examples can be changed as follows.

  Moreover, in the said embodiment and modification, all are the structures which push up a clamping member from a lower side with a screw, However, The structure which pushes up a clamping member can be changed suitably according to a situation. For example, it is good also as a structure which hold | maintains a clamping member upward with the screw fastened from the upper side of a lower frame, removes a screw after construction, and makes the biasing member act.

  Moreover, in the said embodiment, although the screw 70 was demonstrated to the example as a holding member, the structure of a holding member is not limited to this. For example, the smoke-proof panel is assembled in a state where the clamping member (fixing member) is held at the pressing position by the wedge-shaped holding member, and finally moved to the retreat position where the wedge-shaped holding member is removed from the lower frame. And it is good also as a structure which gives the tension | tensile_strength by a biasing member to a smoke-proof sheet | seat. Further, as the holding member, an approximately elliptical shaft-shaped member having an eccentric cross section is disposed through the inside of the lower frame, and the pinching member is pushed up with the ellipse of the shaft-shaped member vertically oriented at the pressing position, and at the retracted position. It is good also as a structure which releases or loosens the press of a clamping member by rotating a shaft-shaped member so that an ellipse becomes sideways. In this configuration, the shaft-like member as the holding member may be left inside the lower frame even after the construction work. Thus, the structure for moving the fixing member that sandwiches the lower end portion of the smokeproof sheet from the pressing position to the retracted position can be appropriately changed according to circumstances.

1,201,301 Smokeproof panel 22 Upper frame 23 Lower frame 25 Smokeproof sheet 61,361 Holding member (fixing member)
65, 365 Biasing member 70 Screw (holding member)

Claims (5)

A smoke-proof panel used for a smoke-proof wall,
A smoke-proof sheet having flexibility;
An upper frame for fixing the upper end of the smoke-proof sheet;
A fixing member for fixing the lower end of the smokeproof sheet;
A lower frame in which the fixing member fixing the smoke-proof sheet is accommodated;
An urging member for urging the fixing member downward in the lower frame;
A holding member that temporarily holds the fixing member biased by the biasing member above;
Smokeproof panel with.   The smoke-proof panel according to claim 1, wherein the holding member is configured to be movable from a pressing position that presses the fixing member upward to a retracted position that releases or weakens the pressing. A screw hole is formed at a position corresponding to the biasing member of the lower frame,
The holding member is fastened from the screw hole, pushes the fixing member upward in the lower frame at the pressing position, and loosens from the lower frame at the retracted position and moves to the retracted position. The smoke proof wall according to claim 2.   The smoke retaining wall according to claim 2 or 3, wherein the holding member is disposed below the urging member in the pressing position. A method for assembling a smoke-proof panel used for a smoke-proof wall,
Attaching a lower frame in which an urging member for urging the fixing member downward is attached to a smoke-proof sheet whose lower end is fixed by a fixing member;
Temporarily holding the fixing member biased by the biasing member upward by a holding member;
And a step of releasing temporary holding of the fixing member by the holding member in a state where the upper frame is fixed at least to the upper end portion of the smoke-proof sheet.

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