Opening / closing device installation structure

Abstract

To prevent deterioration of the fixing strength to wood due to fire heat while ensuring exposed wooden surfaces.SOLUTION: In an opening / closing device installation structure, an opening / closing device 1 is fixed to a surface of a wooden frame X. A fire-resistant covering material M is provided between the wooden frame X and the opening / closing device 1. The fire-resistant covering material M has an extension portion that extends outward from between the wooden frame X and the opening / closing device 1 to cover the wooden frame X. The wooden frame X has a wooden exposed surface Xa1 which is located outward beyond the extension portion and has a wooden part visibly exposed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an opening and closing device installation structure in which an opening and closing device is fastened to a wooden frame having exposed wood. [Background technology]

[0002] A typical shutter device comprises an opening / closing body that operates to close a space, a guide rail that guides the opening / closing body in the vertical direction, and a storage section (shutter box) that stores the opening / closing body above it (see, for example, Patent Document 1). In recent years, shutter devices with the above configuration are often installed in large wooden buildings. Large wooden buildings are designed with a fire hazard prevention feature in case of fire. In other words, the fire hazard prevention feature secures a fire hazard area on the surface of the wood, so that even if the wood catches fire, the fire hazard area will carbonize and function as an insulating layer, reducing the transfer of heat to the wooden substrate inside the fire hazard area. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-173028 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when fastening the shutter device to a wooden structure such as a wooden building, there is a concern that the heat during a fire will carbonize the burnt area on the surface of the wood, reducing the fastening strength of the shutter device. Therefore, it is possible to cover the surface of the wooden frame with a fire-resistant covering material, but this requires some ingenuity so as not to ruin the unique design of the wooden surface. [Means for solving the problem]

[0005] In view of the above problems, one aspect of the present invention is provided with the following configuration. An opening / closing device installation structure in which an opening / closing device is fastened to the surface of a wooden body, wherein a fire-resistant covering material is provided between the wooden body and the opening / closing device, the fire-resistant covering material has an extension portion that extends outward from between the wooden body and the opening / closing device to cover the wooden body, and the wooden body has an exposed wood surface outside the extension portion where a wooden portion is exposed so that it can be seen. [Effects of the Invention]

[0006] Since the present invention is configured as described above, it is possible to prevent the fastening strength to wood from being reduced by the heat of a fire while ensuring an exposed wood surface. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view showing an example of a switching device installation structure according to the present invention; [Figure 2] FIG. 2 is a longitudinal cross-sectional view taken along the line (II)-(II) in FIG. [Figure 3] FIG. 2 is an enlarged front view of a main portion showing an example of left and right pivot support brackets and a fire-resistant covering material. [Figure 4] FIG. 10 is a front view showing another example of the left and right pivot support brackets and the fire-resistant covering material. DETAILED DESCRIPTION OF THE INVENTION

[0008] Next, an embodiment of the present invention will be described in detail with reference to the drawings. In this specification, the "thickness direction of the opening / closing body" refers to the thickness direction of the opening / closing body in the closed state, and the "width direction of the opening / closing body" refers to a direction that is approximately perpendicular to the opening / closing direction of the opening / closing body, but is not the thickness direction of the opening / closing body. Also, the "opening / closing direction of the opening / closing body" means the direction in which the opening / closing body slides to partition or open the space for opening and closing operations.

[0009] In addition, in this specification, "outside the width direction of the opening / closing body" means the side in the direction toward the outside of the opening / closing body along the width direction of the opening / closing body, and "inside the width direction of the opening / closing body" means the side in the direction toward the inside of the opening / closing body along the width direction of the opening / closing body.

[0010] First Embodiment 1 and 2 show a switchgear installation structure A in which a switchgear 1 is fastened to the surface of a wooden skeleton X. In this switchgear installation structure A, a fire-resistant covering material M is provided between the wooden skeleton X and the switchgear 1.

[0011] The wooden skeleton X is a hanging wall having a wooden vertical surface Xa and a wooden lower end surface Xb, and is provided above the opening that is opened and closed by the opening and closing device 1 across the width direction. This wooden skeleton X is composed of hanging wooden pieces (for example, wooden beams) extending downward from the top across the width.

[0012] The outermost layer of this wooden skeleton X is a burning part x1, and the inner side of this burning part x1 is a wood core part x2.

[0013] The burning aid portion x1 is provided so as to cover the wood core portion x2. The thickness Ta of this burning portion x1 is appropriately set so that when it is carbonized by the heat of a fire, the insulating effect of the carbonized layer will prevent heat from being transmitted to the wood core portion x2.

[0014] The core wood x2 is designed to maintain the strength of the wooden structure X even if the burnt portion x1 is carbonized by the heat of a fire.

[0015] The wooden skeleton X having the above-described structure is partially covered with a fire-resistant covering material M in the range from the vertical wooden surface Xa to the lower wooden surface Xb.

[0016] The vertical wood surface Xa has an exposed wood surface Xa1 that is not covered by the fire-resistant covering material M, located above and to the side of the fire-resistant covering material M (upper extension portion m2) and adjacent to the end of the fire-resistant covering material M.

[0017] An exposed wood surface Xb1 is provided on the lower wood end surface Xb at a position adjacent to the end of the fire-resistant covering material M, further back in the projection direction than the fire-resistant covering material M (lower end extension m5).

[0018] The opening and closing device 1 comprises an opening and closing body 10 that opens and closes in the vertical direction, a guide rail 20 that guides the widthwise end of the opening and closing body 10 in the opening and closing direction, and a storage section 30 that extends and stores the opening and closing body 10 on the upper side, and is attached to a wooden body X (see Figures 1 and 2).

[0019] The opening / closing body 10 is constructed by connecting multiple slats, each made by bending a horizontally elongated, roughly rectangular metal plate, in the vertical direction to form the opening / closing body main body 11, and connecting a seat plate 12 to the lower end of this opening / closing body main body 11 so that the seat plate 12 can be seated on a fixed surface below (for example, a floor, the ground, a door rail, etc.) (see Figure 1). Other examples of this opening / closing body 10 include a single or multiple panels, or a fire-resistant sheet or net-like material arranged in the opening / closing direction, or an appropriate combination of slats, panels, pipes, sheet or net-like materials, etc.

[0020] The guide rails 20 are provided on both ends of the opening / closing body 10, respectively. Each guide rail 20 is a long member that guides the opening / closing body 10 in the up-down direction by surrounding the end of the opening / closing body 10 in the width direction in a concave shape. The guide rail 20 is erected substantially vertically on the lower immovable surface and is fastened to a side wall surface (not shown). The upper end of the guide rail 20 is inserted into the storage section 30.

[0021] The storage section 30 includes a winding shaft 31 that winds up and unwinds the opening / closing body 10, support brackets 32, 32 that rotatably support the winding shaft 31 at both ends, a drive mechanism 33 that drives and rotates the winding shaft 31, a cover member 34 that covers the periphery of the opening / closing body 10 wound around the winding shaft 31, a lintel member 35 that stores the seat panel 12 when the opening / closing body 10 is fully open, and a connecting member 36 that integrally connects the left and right support brackets 32, the cover member 34, and the lintel member 35, etc. (see Figure 2).

[0022] The winding shaft 31 is formed in a substantially cylindrical shape and is supported by bearings or the like on both sides of the shaft support brackets 32, 32.

[0023] Each support bracket 32 ​​is integrally provided with a fastening piece 32a that is superimposed on and fastened to the surface (vertical wooden surface Xa) of the wooden body X, and a support piece 32b that protrudes from the fastening piece 32a in a direction away from the fixed surface and supports the end side of the winding shaft 31.

[0024] The fastening piece 32a is formed in the shape of a vertically long rectangular plate. The fastening piece 32a is provided with a plurality of fastening holes 32a1 (three in the illustrated example) aligned in the vertical direction.

[0025] Fasteners 37 (for example, screws, bolts, anchors, etc.) are inserted into the fastening holes 32a1, respectively. The rear end of each fastener 37 is engaged with the fastening piece 32a, and the front end is embedded in the wooden frame X and fixed thereto.

[0026] The support piece 32b is formed in a plate shape that is substantially perpendicular to the winding shaft 31. The support piece 32b has a through cutout 32b1 near the center for supporting the winding shaft 31, and curved pieces 32b2, 32b2 at the upper and lower ends for reinforcement.

[0027] The drive mechanism 33 is configured to transmit the rotational force of an opening / closing machine 33a (for example, an electric motor) serving as a drive source to the winding shaft 31 by a pulley, a belt, or the like. In the drawing, reference numeral 33b denotes a bracket that supports the opening / closing device 33a, and is integrally connected to the pivot bracket 32.

[0028] The cover member 34 is a member that covers the periphery of the winding shaft 31 in the width direction, and is fixed to a stationary portion of the storage section 30 by a connecting member 36 and a frame (not shown) or the like.

[0029] The lintel member 35 is a long member that spans substantially the entire length of the opening / closing body 10 in the width direction, and forms an opening through which the opening / closing body 10 passes in the vertical direction. The lower end of this lintel member 35 is located below the wooden skeleton X (hanging wall) (see FIG. 2).

[0030] The connecting member 36 is a long member that spans almost the entire width of the storage section 30, and supports the left and right support brackets 32, 32 from below to connect them together, and also fixes the cover member 34, the lintel member 35, etc. together.

[0031] The fire-resistant covering material M is formed by connecting a plurality of fire-resistant plate-shaped members with almost no gaps between them. According to a preferred example of this embodiment, the fire-resistant covering material M uses calcium silicate boards. This fire-resistant covering material M is sandwiched between the wooden skeleton X and the switchgear 1, and extends outward from between the wooden skeleton X and the switchgear 1 (see FIGS. 2 and 3).

[0032] More specifically, the fire-resistant covering material M partially covers the area from the vertical wooden surface Xa to the lower wooden end surface Xb of the wooden skeleton X (see FIG. 2), and is formed in a horizontally elongated rectangular shape when viewed from the front (see FIG. 3) so as to straddle the left and right pivot support brackets 32, 32. The horizontal length of this fire-resistant covering material M is greater than the horizontal width of the opening and closing device 1.

[0033] This fire-resistant covering material M has a clamped portion m1 sandwiched between the wooden vertical surface Xa of the wooden body X and the fastening piece 32a of the pivot bracket 32, an upper extending portion m2 extending upward from between the wooden vertical surface Xa and the fastening piece 32a, a lower extending portion m3 extending downward from between the wooden vertical surface Xa and the fastening piece 32a, a lateral extending portion m4 (see Figure 3) extending laterally from between the wooden vertical surface Xa and the fastening piece 32a, and a lower end extending portion m5 partially covering the lower end surface of the wooden body X, which is a hanging wall.

[0034] The fire-resistant covering material M partially covers the wooden skeleton X, and an exposed wood surface where the wooden portion is visibly exposed is secured on the surface of the wooden skeleton X outside the fire-resistant covering material M. This exposed wood surface includes an exposed wood surface Xa1 located above the support bracket 32 ​​and an exposed wood surface Xb1 located further back in the projection direction than the lower end extension m5.

[0035] The vertical length La of the upper extension m2 and the horizontal length Lb of the side extension m4 (see FIG. 3) are each set to be equal to or greater than the thickness Ta of the burning margin portion x1.

[0036] In addition, the length Ld of the lower end extension m5 toward the rear in the prospective direction is set so that it intersects with the imaginary line N connecting the end Xb11 at the rear of the prospective direction of the exposed wood surface Xb1 and the lower end 35a at the rear in the prospective direction of the lintel member 35, while ensuring the exposed wood surface Xb1 (see Figure 2).

[0037] Next, the characteristic functions and effects of the switchgear 1 and the switchgear installation structure A configured as described above will be described in detail.

[0038] For example, as shown in FIG. 2, if a fire breaks out on the installation side (indoor side) of the wooden structure X where the opening and closing device 1 is installed, the upper exposed wooden surface Xa1, the upper extension m2, the opening and closing device 1, the lintel member 35, the lower end extension m5, and the exposed wooden surface Xb1, etc., will be exposed to the heat of the fire.

[0039] As a result, the exposed wood surface Xa1 is exposed to the heat of the fire and the burning part x1 is carbonized, and this carbonized part acts as an insulating layer, preventing the heat from being transmitted to the core part x2, thereby reducing the thermal deterioration of the core part x2.

[0040] In addition, within the range of the upper extension portion m2, the upper extension portion m2 prevents the heat of the fire from being transmitted to the burning portion x1. In particular, in a preferred example of this embodiment, the vertical and horizontal lengths La, Lb of the upper extension portion m2 are set to be equal to or greater than the thickness Ta of the burning portion x1, thereby effectively preventing the heat of a fire from being transmitted in a wraparound manner to the portion where the fastening device 37 is embedded.

[0041] Furthermore, within the range of the opening and closing device 1, the heat of the fire is prevented from being transmitted to the wooden skeleton X by the opening and closing device 1, the clamped portion m1, etc.

[0042] Furthermore, at the lower end side of the wooden skeleton X, the heat of the fire is prevented from being transmitted to the wooden skeleton X by the lintel member 35 and the lower end extension m5. In particular, in a preferred example of this embodiment, the length Ld of the lower end extension m5 is appropriately set as described above, thereby effectively reducing exposure of the exposed wood surface Xb1 to the heat of a fire.

[0043] Therefore, according to the opening and closing device installation structure A having the above-mentioned configuration, the exposed wooden surfaces Xa1, Xb1 have a good design, and it is possible to prevent the wooden body X from deteriorating due to the heat of a fire and reducing the fastening strength of the fastening device 37.

[0044] <Modification> According to the above embodiment, as a particularly preferred aspect, the fire-resistant covering material M is provided so as to straddle the left and right support brackets 32, 32. However, as another example, as shown in Figure 4, the above fire-resistant covering material M can also be replaced with two fire-resistant covering materials M', M' that are symmetrical on the left and right. Each fire-resistant covering material M' is provided to correspond to each pivot bracket 32, and similarly to the above embodiment, protrudes upward from each pivot bracket 32 ​​by a dimension La and protrudes outward in the width direction of the opening / closing body by a dimension Lb. According to another example shown in Fig. 4, similarly to the above embodiment, the left and right fire-resistant covering materials M', M' can prevent the wooden frame X from deteriorating due to the heat of a fire and the fastening strength of the fasteners 37 from decreasing.

[0045] According to the above embodiment, the fire-resistant covering material M is provided between the wooden body X and the support bracket 32 ​​and the lintel member 35, but as another example, it is also possible to provide the wooden body X between the wooden body X and other parts of the opening and closing device 1. That is, as another example, there may be provided an opening and closing device installation structure in which a guide rail 20 is fastened to the surface of a wooden body, a fire-resistant covering material M is provided between the wooden body and the guide rail 20, the fire-resistant covering material M has an extension portion that extends outward from between the wooden body and the guide rail 20 and covers the wooden body, and the wooden body may have an exposed wood surface outside the extension portion that exposes the wood portion so that it can be seen. According to this alternative example, the exposed wood surface provides a good design appearance, and the strength of the fastening portion of the guide rail 20 can be effectively prevented from decreasing.

[0046] According to the above embodiment, the fire-resistant covering material M is a calcium silicate board, but as another example, the fire-resistant covering material M can be a gypsum board or other fire-resistant member.

[0047] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate within the scope of the present invention.

[0048] <Summary> As described above, the above embodiments disclose the following inventions. (1) An opening / closing device installation structure in which an opening / closing device is fastened to the surface of a wooden skeleton, wherein a fire-resistant covering material is provided between the wooden skeleton and the opening / closing device, the fire-resistant covering material has an extension portion that extends outward from between the wooden skeleton and the opening / closing device to cover the wooden skeleton, and the wooden skeleton has an exposed wood surface outside the extension portion where the wooden portion is exposed so that it can be seen (see Figures 1 to 4). (2) The opening and closing device installation structure described in (1) (see Figure 2) is characterized in that the wooden body has a burning part on its surface side, and the extension length of the extension part is set to be equal to or greater than the thickness of the burning part. (3) The opening and closing device comprises an opening and closing body that opens and closes in the vertical direction, a winding shaft that winds up the opening and closing body on the upper side, and a support bracket that supports the winding shaft on both sides, and the fire-resistant covering material is provided between the wooden body and the support bracket, and has an extension that extends outward from between the wooden body and the support bracket (see Figures 2 to 4). This is an opening and closing device installation structure described in (1) or (2). (4) The opening and closing device installation structure according to (3) (see FIGS. 2 to 4) is characterized in that the extension portion includes an upper extension portion that extends above the pivot support bracket. (5) The opening and closing device installation structure described in (3) or (4) (see Figure 2) is characterized in that the wooden body is a hanging wall having a wooden vertical surface and a wooden bottom end surface, the fire-resistant covering material partially covers the area from the wooden vertical surface to the wooden bottom end surface, the pivot support bracket is fastened so as to contact the fire-resistant covering material on the wooden vertical surface, the extension portion includes a bottom end extension portion that covers the wooden bottom end surface, and the wooden bottom end surface has the exposed wooden surface that is not covered by the fire-resistant covering material on the rear side in the viewing direction from the bottom end extension portion. (6) An opening and closing device installation structure as described in (5) (see Figure 2) is characterized in that a lintel member having a lower end below the hanging wall is provided below the pivot bracket, and the lower end extension portion extends toward the rear of the view so as to intersect with an imaginary line connecting the rear end of the wooden lower end surface in the view direction and the lower end of the lintel member in the rear of the view direction. (7) The switchgear installation structure according to any one of (1) to (6) (see FIG. 3), wherein the fire-resistant covering material is formed so as to include the entire length of the switchgear in the width direction. [Explanation of symbols]

[0049] 1: Switchgear 10: Opening and closing body 20: Guide rail 30: Storage area 32: Axis support ブラケット 32a: Stop film 32b: Support piece A: Opening and closing device setting structure M: Fire-resistant coating material m1: clamped part m2: upper extension m3: lower extension m4: lateral extension m5: lower end extension X: Wooden body Xa: wooden lead surface Xa1: wooden exposed surface Xb: wooden lower end Xb1: wooden exposed surface

Claims

1. An opening and closing device installation structure in which an opening and closing device is fastened to the surface of a wooden frame, a fire-resistant covering material is provided between the wooden frame and the opening and closing device; the fire-resistant covering material has an extension portion that extends outward from between the wooden skeleton and the opening and closing device to cover the wooden skeleton, The opening and closing device installation structure is characterized in that the wooden body has a wooden exposed surface outside the extension portion, where the wooden portion is exposed so that it can be seen.

2. The wooden skeleton has a burning portion on its surface side, 2. The opening / closing device installation structure according to claim 1, wherein the extension length of the extension portion is set to be equal to or greater than the thickness of the burning portion.

3. The opening and closing device includes an opening and closing body that opens and closes in a vertical direction, a winding shaft that winds up the opening and closing body on the upper side, and a support bracket that supports the winding shaft on both sides, The opening and closing device installation structure according to claim 1, characterized in that the fire-resistant covering material is provided between the wooden body and the pivot bracket and has an extension portion extending outward from between the wooden body and the pivot bracket.

4. 4. The opening / closing device installation structure according to claim 3, wherein the extension portion includes an upper extension portion extending above the pivot support bracket.

5. The wooden skeleton is a hanging wall having a wooden vertical surface and a wooden bottom end surface, The fire-resistant covering material partially covers the area from the vertical surface of the wood to the lower end surface of the wood, The pivot bracket is fastened to the fire-resistant covering material on the vertical wooden surface, The extension portion includes a lower end extension portion that covers the lower end surface of the wood, The opening and closing device installation structure according to claim 3, characterized in that the lower end surface of the wood has an exposed wood surface that is not covered by the fire-resistant covering material, located further back in the projection direction than the lower end extension portion.

6. A lintel member having a lower end portion below the hanging wall is provided below the pivot support bracket, The opening and closing device installation structure described in claim 5, characterized in that the lower end extension portion extends toward the rear of the wooden lower end surface so as to intersect with an imaginary straight line connecting the rear end of the wooden lower end surface and the rear lower end of the lintel member.

7. 7. The switchgear installation structure according to claim 1, wherein the fire-resistant covering material is formed so as to include the entire length of the switchgear in the width direction.

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