Guide rail installation structure

Abstract

To reduce conduction of heat to a fastening material.SOLUTION: A guide rail installation structure has a guide rail 40A, which is for guiding an opening / closing body 10 to the closing direction, fixed to a wooden skeleton X with a fastening material M1. The guide rail 40A is formed hollowly containing the rear end side of the fastening material M1. The fastening material M1 has its rear end side locked inside the guide rail 40A and its forward end side secured to the wooden skeleton X. The inside of the guide rail 40A is provided with an adiabaticity member 45 that, covering the rear end side of the fastening material M1, has less thermal conductivity than the guide rail 40A.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a guide rail installation structure in which a guide rail for guiding an opening / closing body in a closing direction is installed on a wooden frame. [Background technology]

[0002] In a typical opening and closing device, as described in Patent Document 1, for example, a guide rail for guiding the opening and closing body in the closing direction is fastened to the steel material that constitutes the building structure by fastening devices such as screws and bolts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-211257 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in recent years, there are cases where a large building framework is constructed from wood and a large shutter device such as a heavy-duty shutter is installed on the wooden framework. In such cases, the relatively heavy guide rails are fastened to the wooden structure by fasteners such as screws and bolts. However, in the unlikely event of a fire, heat from the fire will be transferred to the fasteners, causing thermal deterioration of the fastening portions of the fasteners in the wooden structure, which may result in the fasteners becoming loose or falling off. [Means for solving the problem]

[0005] In view of the above problems, one aspect of the present invention has the following configuration. A guide rail installation structure in which a guide rail for guiding an opening / closing body in a closing direction is fixed to a wooden structure by a fastening device, the guide rail is formed hollow with the rear end side of the fastening device inside, the rear end side of the fastening device is engaged within the guide rail and the front end side is fastened to the wooden structure, and a heat-insulating member having a lower thermal conductivity than the guide rail is provided inside the guide rail so as to cover the rear end side of the fastening device. Effect of the Invention

[0006] Since the present invention is configured as described above, even in the unlikely event of a fire occurring, the transfer of heat due to the fire to the fastener can be reduced. [Brief description of the drawings]

[0007] [Figure 1] 1 is a front view showing an example of an opening and closing device to which a guide rail installation structure according to the present invention is applied; [Diagram 2] FIG. 2 is a longitudinal sectional view taken along line (II)-(II) in FIG. [Diagram 3] FIG. 2 is a cross-sectional view taken along line (III)-(III) in FIG. [Figure 4] 4 is a cross-sectional view of a main portion showing another example of a guide rail installation structure according to the present invention. FIG. [Diagram 5] 4 is a cross-sectional view of a main portion showing another example of a guide rail installation structure according to the present invention. FIG. [Figure 6] 4 is a cross-sectional view of a main portion showing another example of a guide rail installation structure according to the present invention. FIG. [Figure 7] 4 is a cross-sectional view of a main portion showing another example of a guide rail installation structure according to the present invention. FIG. [Figure 8] 4 is a cross-sectional view of a main portion showing another example of a guide rail installation structure according to the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Next, an embodiment of the present invention will be described in detail with reference to the drawings. In this specification, the term "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 and is not the thickness direction of the opening / closing body. In addition, the term "outer side in the width direction of the opening / closing body" refers to the direction toward the outside of the opening / closing body along the width direction of the opening / closing body. For example, when the guide rail on the right side is used as a reference, the outer side in the width direction of the opening / closing body is the right side. In addition, the term "inner side in the width direction of the opening / closing body" refers to the direction toward the inside of the opening / closing body along the width direction of the opening / closing body. For example, when the guide rail on the right side is used as a reference, the inner side in the width direction of the opening / closing body is the left side.

[0009] <First embodiment> FIG. 1 shows an opening and closing device to which an example of a guide rail installation structure according to the present invention is applied. The opening and closing device 1 includes an opening and closing body 10 that performs a closing operation to partition a space, a storage section 20 that extends the opening and closing body 10 in a closing direction and stores it in an opening direction, a fixed base frame 30 that fixes the storage section 20 to a wooden structure X, and a guide rail 40A that guides the opening and closing body 10 in the closing direction and the opening direction. This opening and closing device 1 employs a guide rail installation structure A as a structure for fixing a guide rail 40A to a wooden skeleton X.

[0010] Wooden structure X is a large building whose main material is wood. This wooden structure X comprises a wooden base x1 and a fire-resistant member x2 that covers the wooden base x1 (see Figs. 2 and 3).

[0011] The wooden base x1 is a wooden building material that constitutes the basic framework of the wooden structure X, such as rectangular prism-shaped wooden pieces that constitute pillars and beams, or flat structural plywood that constitutes the walls. The wooden base x1 in the illustrated example is erected from the floor surface below the opening and closing device 1 to the ceiling part 2 above the opening and closing device 1.

[0012] The fire-resistant member x2 is a plate-shaped building material having fire resistance and heat insulation properties (such as a gypsum board or a calcium silicate board), and one or more fire-resistant members x2 (two in the illustrated example) are layered on the surface of the wooden base x1.

[0013] The opening / closing body 10 is made up of a plurality of slats connected together so as to be able to rotate between the top and bottom, and is sometimes called a slat shutter curtain. The slats are made by bending a horizontally elongated, generally rectangular metal plate. Other examples of this opening / closing body 10 include a structure made of a flexible sheet, a structure made of multiple panels, a structure in which multiple pipes are arranged at intervals above and below, and a structure made of an appropriate combination of slats, flexible sheets, panels, pipes, etc.

[0014] The storage section 20 is equipped with a winding shaft 21 that winds up and unwinds the opening-closing body 10, pivot brackets 22, 22 that support the winding shaft 21 at both ends, a winding shaft case 23 that covers the winding shaft 21 and the opening-closing body 10 wound around the winding shaft 21, an opening / closing machine 24 which is a driving source that drives and rotates the winding shaft 21, and a support base frame 25 that supports the pivot brackets 22, 22, etc. (see Figures 1 and 2).

[0015] The winding shaft 21 is formed in a long cylindrical shape extending in the width direction of the opening / closing body, and is supported so as to be freely rotatable. This winding shaft 21 may be configured in such a manner that the winding body is rotatably supported via a bearing on the outer periphery of a non-rotatable fixed shaft, or in such a manner that a shaft portion integral with the winding body is rotatably supported via a bearing on a support bracket 22.

[0016] The winding shaft case 23 is formed in an elongated shape with a generally U-shaped or arc-shaped cross section continuing in the opening / closing width direction. The winding shaft case 23 is attached to the support base frame 25 so as to cover the winding shaft 21 and the opening / closing body 10 wound around the winding shaft 21 from the front side (the left side in FIG. 2).

[0017] The opening / closing device 24 is composed of an electric motor, gears, etc. The opening / closing device 24 is supported by a support bracket 22 on one side (the right side according to FIG. 1), and transmits its rotational force to the winding shaft 21 by a chain, a sprocket, etc. (not shown).

[0018] The support base frame 25 is formed by connecting a plurality of long hard members (for example, various steel materials such as angle iron and channel iron). The support base frame 25 in the illustrated example is integrally formed with a horizontally long connecting portion 25a that connects the left and right pivot support brackets 22, 22 at their lower ends, and a support portion 25b that supports a substantially central portion in the width direction of the connecting portion 25a and is fastened to the fixed base frame 30 at the rear.

[0019] The fixed base frame 30 is configured as a generally rectangular frame in front view spanning substantially the entire width of the storage section 20 by connecting a plurality of long rigid members (square steel pipes in the illustrated example). A protrusion 31 that protrudes upward is provided on the center side in the width direction of the fixed base frame 30. The upper rear end side portion of the above-mentioned support section 25b is fastened to the protrusion 31. The fixed base frame 30 is immovably fixed to the wooden structure X by fasteners (not shown) (for example, screws, bolts, anchor members, etc.).

[0020] The guide rails 40A are long members that are continuous vertically on both ends of the opening / closing body 10 in the width direction. The guide rail 40A is fixed to the visible surface Xa of the wooden structure X so as to guide the widthwise end of the opening / closing body 10 in the opening / closing direction.

[0021] The guide rail 40A in the illustrated example is integrally equipped with a rail body 41 having a hollow L-shaped cross section that protrudes forward from the visible surface Xa of the wooden structure X and has its tip bent inward in the width direction of the opening / closing body (to the left in FIG. 3), a fastening bracket 42 for fastening this rail body 41 to the visible surface Xa of the wooden structure X, and an insulating member support part 43 for supporting an insulating member 45 within the rail body 41. The rail body 41, the fastening bracket 42, and the heat insulating member support portion 43 are each formed from a hard metal material (for example, steel, stainless steel, aluminum alloy, etc.).

[0022] The fastening bracket 42 has a generally concave cross section that is elongated in the vertical direction and has a plate-shaped portion 42a that contacts the visible surface Xa of the wooden structure X and protruding pieces 42b, 42b that protrude forward from both the left and right ends of the plate-shaped portion 42a. The fastening bracket 42 is fastened to the visible surface Xa of the wooden structure X by a fastening tool M1 that is inserted through the plate-shaped portion 42a.

[0023] The rail body 41 integrally includes a guide portion 41a that surrounds the widthwise end of the opening / closing body 10 in a concave cross section and guides it in the vertical direction, and a support portion 41b that protrudes forward from the visible surface Xa of the wooden structure X and supports the guide portion 41a. The rail body 41 has a support portion 41b overlapping both protruding pieces 42b, 42b of the previously attached fastening bracket 42. The overlapping portions are joined together by fastening members M2 (e.g., screws, bolts, rivets, etc.) that are inserted through the rail body 41. A closed space is formed within the support portion 41b (see FIG. 3).

[0024] The closed space within the support portion 41b is partitioned by the heat insulating member support portion 43 to form two air layers a1 and a2, one at the front and one at the rear. The heat insulating member support portion 43 is formed in a plate shape that is continuous in the vertical direction and is located rearward of the head m12 of the fastener M1. Both left and right ends are joined to the inner surface of the support portion 41b by, for example, welding. The heat insulating member support portion 43 functions both as a support member for stably supporting the rear side heat insulating portion 45a and as a reinforcing member for reinforcing the rail main body 41.

[0025] Of the front and rear spaces separated by the heat insulating member support portion 43, the front space adjacent to the wooden structure X is provided with a head m12 of the fastening device M1 that fastens the fastening bracket 42 to the wooden structure X, and a heat insulating member 45 that covers this head m12 from behind, and an air layer a2 is provided between the fastening device M2 and the heat insulating member 45.

[0026] The fastener M1 is a screw member (for example, a screw or a bolt) having a threaded portion m11 at its front end and a head portion m12 at its rear end, and a plurality of fasteners M1 are provided at intervals in the vertical direction. Each fastener M1 has a screw portion m11 that penetrates the fastener bracket 42, and a head portion m12 that is engaged with the edge of the through hole. The screw portion m11 penetrates the fire-resistant members x2, x2 and is screwed into the wooden base x1.

[0027] The insulating member 45 is a fire-resistant insulating material made of a material with lower thermal conductivity than the guide rail 40A, and in the illustrated example, uses the same building material as the fire-resistant member x2 (e.g., gypsum board, calcium silicate board, etc.). Other examples of the insulating material 45 that can be used include fiber-based insulating materials such as glass wool, rock wool, cellulose fiber, and insulation boards, foamed plastic insulating materials such as urethane foam and expanded polyethylene foam, natural insulating materials such as carbonized cork, and wood.

[0028] This heat insulating member 45 is fixed to the side surface of the wooden skeleton X of the heat insulating member support portion 43, the inner wall surface of the rail main body 41, etc. This fixing means may be adhesion, fitting, or fastening devices (for example, screws, bolts, rivets, etc.).

[0029] According to an example shown in Figure 3, the insulating member 45 has a rear side insulating portion 45a that is supported by the insulating member support portion 43 and located rearward of the fastener M1, and a lateral side insulating portion 45b that protrudes forward from this rear side insulating portion 45a and is close to the side of the head m12 of the fastener M1.

[0030] The inner surface of the guide rail 40A in the width direction of the opening / closing body (the left side in FIG. 3) is covered with double fire-resistant members x2, x2. These fire-resistant members x2, x2 continuously cover the wooden base x1 to the support portion 41b of the rail body 41. The fire-resistant member x2 may have a single layer structure or a multi-layer structure of three or more layers.

[0031] The lower end of the guide rail 40A having the above configuration is fixed to a fixed portion on the lower side (for example, the floor surface, the lower frame, the door sill, etc.) via a bracket (not shown), etc. The upper end is fixed to a fixed portion on the upper side (for example, the fixed base frame 30, the ceiling 2, the steel material on the upper side, the beam material, etc.) via a bracket (not shown).

[0032] As another example of the guide rail 40A, it is possible to use a configuration in which the guide rail 40A is configured in a hollow column shape by using a plurality of members other than those shown in the drawings, or a configuration in which the guide rail 40A is configured in an integrated hollow tube shape.

[0033] Therefore, according to the guide rail installation structure A configured as described above, in the unlikely event that a fire breaks out and the guide rail 40A receives heat from the fire, it is possible to reduce the transfer of the heat to the fastener M1.

[0034] In more detail, when the guide rail 40A receives heat from the front side, the heat can be prevented from being transmitted to the head m12 of the fastening device M1 by the air layer a1 on the front side within the support portion 41b, the rear insulating portion 45a, the air layer a2 on the rear side within the support portion 41b, etc. (see Figure 3). Furthermore, when the guide rail 40A receives heat from the outer side in the width direction of the opening / closing body (the right side in FIG. 3), the lateral heat insulating portion 45b and the air layer a2 can prevent the heat from being transmitted to the head m12 of the fastener M1. In addition, when the guide rail 40A receives heat from the inside in the width direction of the opening / closing body (the left side in Figure 3), the heat can be prevented from being transmitted to the head m12 of the fastener M1 by the fire-resistant members x2, x2 on the side of the guide rail 40A and the air layer a2, etc.

[0035] This prevents the fastener M1 from becoming too hot due to the heat during a fire, which in turn prevents the wooden base x1 from thermally deteriorating around the screw portion m11 of the fastener M1, and further prevents the fastener M1 from falling off or the guide rail 40A from becoming detached due to the fastener M1 falling off.

[0036] <Second embodiment> Next, an opening and closing device to which another example of the guide rail installation structure according to the present invention is applied will be described. In addition, since the guide rail installation structure described below is a modified portion of the above-mentioned guide rail installation structure A, parts that function in the same way as the above-mentioned guide rail installation structure A are given the same symbols and duplicate detailed explanations are omitted.

[0037] In the guide rail installation structure B shown in FIG. 4, a guide rail 40B is fastened to a wooden heat insulating member 44, and this heat insulating member 44 is fastened to a wooden skeleton X by a fastener M1.

[0038] Guide rail 40B is configured such that fastening bracket 42 in guide rail 40A is replaced with a heat insulating member 44, heat insulating member support portion 43 is replaced with a reinforcing member 43', and rear heat insulating portion 45a and side heat insulating portion 45b are omitted.

[0039] The heat insulating member 44 has a rectangular cross section that fits between both side walls of the rail body 41 and extends vertically along the visible surface Xa of the wooden structure X in an elongated shape. The heat insulating member 44 is made of a material having a lower thermal conductivity than the metal rail body 41, and in this example of the present embodiment, wood is used. The heat insulating member 44 is fastened and fixed to the visible surface Xa of the wooden structure X by fasteners M1 which are inserted through the heat insulating member 44.

[0040] In this guide rail 40B, the rail body 41 is overlapped on both side ends of the previously attached insulating member 44 and is integrally joined to the insulating member 44 by fasteners M2 (e.g., screws, bolts, rivets, etc.) (see Figure 4). That is, the heat insulating member 44 functions as a fastening bracket that fastens the rail body 41 to the wooden structure X, and also functions as a heat insulating member that protects the rear end side of the fastening tool M1 (more specifically, the rear end side of the screw part m11 and the part forward of the head part m12) from heat. Furthermore, the heat insulating member 44 also functions as a substitute member that prevents a flame from spreading to the wooden base x1.

[0041] The guide rail 40B having the above-mentioned configuration has its outer surfaces, on the inner side and outer side (the right side and the left side in FIG. 4) in the width direction of the opening / closing body, covered with a plurality of layers of fire-resistant material x2.

[0042] Therefore, according to the guide rail installation structure B configured as above, in the unlikely event that a fire breaks out and the guide rail 40B receives heat from the fire, it is possible to reduce the transfer of the heat to the fastener M1.

[0043] In more detail, when the guide rail 40B receives heat from the front side, the front and rear air layers a1, a2 in the support portion 41b and the heat insulating member 44 can prevent the heat from being transmitted to the rear end side of the fastener M1. In addition, when the guide rail 40B receives heat from both sides in the width direction of the opening / closing body (the left and right sides in FIG. 3), the heat can be prevented from being transmitted to the rear end side of the fastening device M1 by the fire-resistant members x2, x2, air layers a1, a2, and heat-insulating member 44 on both sides of the guide rail 40B.

[0044] This prevents the fastener M1 from becoming too hot and causing thermal deterioration of the wooden base x1 around the screw portion m11 of the fastener M1, thereby preventing the fastener M1 from falling off and the guide rail 40B from becoming detached due to the fastener M1 falling off.

[0045] Furthermore, according to this guide rail installation structure B, in the unlikely event that the heat insulating member 44 catches fire due to flames or heat during a fire, the heat insulating member 44 can function as a substitute for fire. That is, when the heat insulating member 44 catches fire, the heat insulating member 44 functions as a good heat insulating material by forming a carbonized layer, and therefore, it is possible to effectively prevent the fire from spreading to the wooden base x1.

[0046] <Third embodiment> 5, a guide rail installation structure C has a guide rail 40C installed on the visible surface Xb of the opening in the body. The guide rail 40C constitutes an opening / closing device (not shown) in a manner substantially similar to that of the above embodiment, and surrounds the width direction end of the opening / closing body 10 extended from the upper storage section 20 in a concave shape to guide it in the vertical direction.

[0047] The guide rail 40C is integrally equipped with a rail main body 41' protruding from the visible surface Xb of the wooden structure X toward the inside in the width direction of the opening / closing body (to the left in Figure 5), and a fastening bracket 42 for fastening this rail main body 41' to the visible surface Xb. A heat insulating member 46 having lower thermal conductivity than the guide rail 40C is provided inside the guide rail 40C so as to cover the rear end side (specifically, the head m12) of the fastener M1.

[0048] The rail main body 41' integrally comprises a guide portion 41a' that guides the opening / closing body 10 in the vertical direction, and a support portion 41b' that protrudes inward in the width direction of the opening / closing body from the visible surface Xb of the wooden structure X and supports the guide portion 41a', and is continuous in a long shape extending in the vertical direction.

[0049] The support portion 41b' forms a closed air layer a3 between the guide portion 41a' and the wooden structure X. A flat heat insulating member support portion 43 is provided in the support portion 41b' near the guide portion 41a' in the vertical direction so as to support the heat insulating member 46. The heat insulating member support portion 43 also has the function of reinforcing the entire rail main body 41'.

[0050] The rail main body 41' is joined integrally to the previously attached fastening bracket 42 by overlapping the inner surface of the support portion 41b' with the fastening device M2 (for example, a screw, a bolt, a rivet, or the like).

[0051] The heat insulating member 46 is a fire-resistant fiber member made of the above-mentioned fiber-based heat insulating material. The heat insulating member 46 is disposed so as to surround the head m12 of the fastener M1 with an air layer a3 sandwiched between the heat insulating member 46 and the head m12, with a concave cross section (see FIG. 5). As another example, the insulating member 46 can also be an insulating material other than a fiber-based insulating material (for example, gypsum board, calcium silicate board, the foamed plastic insulating material, the natural material insulating material, wood, etc.).

[0052] Further, the front and rear outer walls of the guide rail 40C are covered with a single-layer or multi-layer (two layers in the illustrated example) fire-resistant member x2.

[0053] Therefore, according to the guide rail installation structure C shown in Figure 5, in the unlikely event that a fire breaks out and the guide rail 40C is subjected to heat from the fire, the transfer of the heat to the fastening device M1 can be reduced by the fire-resistant members x2, x2 of the outer wall of the guide rail 40C, the heat-insulating member 46, the air layer a3, etc.

[0054] This prevents the fastener M1 from becoming too hot and causing thermal deterioration of the wooden base x1 around the screw portion m11 of the fastener M1, thereby preventing the fastener M1 from falling off and the guide rail 40C from becoming detached due to the fastener M1 falling off.

[0055] <Fourth embodiment> In a guide rail installation structure D shown in FIG. 6, a burning portion x3 is provided in a wooden structure X' for installing a guide rail 40D. That is, the wooden structure X' has a wooden base x1 covered with fire-resistant members x2, x2, and a burning portion x3 connected to the wooden base x1 and protruding from the main body of the structure.

[0056] The guide rail 40D includes a rail main body 41' and a fastening bracket 42 joined to the rail main body 41' by a fastening device M2, and the fastening bracket 42 is fastened to the burn portion x3 by a fastening device M1. In addition, the lower and upper ends of this guide rail 40D are fixed to a fixed portion on the lower side (e.g., the floor surface, the bottom frame, the door sill, etc.) and a fixed portion on the upper side (e.g., the fixed base frame 30, the ceiling portion 2, the top steel material, the beam material, etc.).

[0057] In more detail, the wooden structure X' has a wooden base x1 and fire-resistant members x2, x2 covering the wooden base x1, which form the visible surface Xb of the opening in the structure, and a burning portion x3 is fastened to this visible surface Xb by fastening devices M3 (e.g., screws, bolts, anchor members, etc.).

[0058] The fuel portion x3 is a piece of wood with a rectangular cross section, and is continuous in a long vertical shape. The fuel portion x3 is fixed to the fire-resistant members x2, x2 and the wooden base x1 by a plurality of fasteners M3 arranged vertically. The fasteners M1 for fastening the guide rail 40D and the fasteners M3 for fastening the fuel portion x3 are at different heights so as not to interfere with each other.

[0059] A guide rail 40D is fixed to the inner surface (the left side in FIG. 6) of the fuel portion x3 in the width direction of the opening / closing body via multi-layered fire-resistant members x2, x2.

[0060] The guide rail 40D, similar to the above-mentioned guide rail 40C, integrally comprises a rail main body 41' protruding inward in the width direction of the opening / closing body, and a fastening bracket 42 for fastening this rail main body 41' to the combustion portion x3 and the fire-resistant members x2, x2. A heat insulating member 46 (for example, a fire-resistant fiber member) having lower thermal conductivity than the guide rail 40D is provided inside the guide rail 40D so as to cover the rear end side (specifically, the head m12) of the fastener M1. In the illustrated example, the heat insulating member 46 contacts the head portion m12 of the fastener M1 and covers the head portion m12.

[0061] Furthermore, the portion extending from the burning portion x3 to the guide rail 40D is covered by being sandwiched between front and rear multi-layered fire-resistant members x2, x2 (see FIG. 6). Therefore, the guide rail 40D exposes the guide portion 41a' to the inside in the width direction of the opening / closing body, and most of the guide rail 40D other than the guide portion 41a' is disposed inside the fire-resistant member x2.

[0062] Therefore, according to the guide rail installation structure D shown in FIG. 6, the heat caused by a fire can be reduced from being transmitted to the fastener M1 by the fire-resistant members x2, x2 on the outer side of the guide rail 40D, the fibrous heat insulating member 46, and the like. This prevents the fastener M1 from becoming too hot and the fuel portion x3 from thermally deteriorating around the screw portion m11 of the fastener M1. In the unlikely event that the fuel portion x3 catches fire due to flames or heat during a fire, the fuel portion x3 is carbonized and functions as a heat insulating layer. This effectively prevents the flame from spreading to the wooden base x1.

[0063] <Fifth embodiment> A guide rail installation structure E shown in FIG. 7 is the same as the guide rail installation structure D, except that the burning portion x3 is brought into direct contact with the wooden base x1 and joined with a fastener M3. According to this guide rail installation structure E, like the guide rail installation structure D, the transmission of heat due to a fire to the fastener M1 is reduced by the fire-resistant members x2, x2 on the outside of the guide rail 40C, the heat insulating member 46, etc., and the fastener M1 can be prevented from becoming too hot and the combustion portion x3 around the fastener M1 can be prevented from being thermally deteriorated. In the unlikely event that the fuel portion x3 ignites due to flames or heat during a fire, the fuel portion x3 will carbonize and function as an insulating layer, effectively preventing thermal deterioration and burning of the wooden base x1.

[0064] Sixth embodiment In the guide rail installation structure F shown in FIG. 8, a guide rail 40F is fastened to a wooden heat insulating member 44, and this heat insulating member 44 is fastened to the visible surface Xb of a wooden skeleton X' by a fastener M1.

[0065] Guide rail 40F is configured such that fastening bracket 42 of guide rail 40C (see FIG. 5) is replaced with a wooden heat insulating member 44, and internal heat insulating member 46 is omitted. Multi-layered fire-resistant members x2, x2 are provided on the front and rear outer surfaces of the guide rail 40F.

[0066] According to the guide rail installation structure F shown in FIG. 8, the heat caused by a fire can be reduced from being transmitted to the fastener M1 by the fire-resistant members x2, x2, the air layer a3, the heat-insulating member 44, and the like surrounding the guide rail 40F, thereby preventing the wooden base x1 from being thermally deteriorated around the fastener M1. Furthermore, according to this guide rail installation structure F, in the unlikely event that the insulating member 44 ignites due to flames or heat during a fire, the insulating member 44 can function as a substitute for fire, thereby preventing thermal deterioration and burn damage to the wooden base x1.

[0067] <Other Modifications> According to the above embodiment, one type of heat insulating material is provided inside the guide rail. However, as an example other than the illustrated example, multiple types of heat insulating materials (e.g., gypsum board and fiber-based heat insulating material, gypsum board and wood, etc.) may be provided inside the guide rail.

[0068] The present invention is not limited to the above-mentioned specific configuration, and can be modified as appropriate without departing from the gist of the present invention.

[0069] <Summary> As described above, the above embodiments disclose the following inventions. (1) This guide rail installation structure has a guide rail for guiding an opening / closing body in a closing direction, the guide rail being formed hollow with a rear end side of the fastener inside, the rear end side of the fastener being engaged within the guide rail and the front end side being fastened to the wooden structure, and a heat insulating member having a lower thermal conductivity than the guide rail is provided inside the guide rail so as to cover the rear end side of the fastener (see Figures 3 to 8). (2) The guide rail installation structure described in (1) is characterized in that an insulating member support portion that supports the insulating member is integrally provided inside the guide rail (see Figures 3 and 5). (3) The guide rail installation structure described in (2) (see Figure 3) is characterized in that the insulating member has a rear side insulating portion supported by the insulating member support portion and located rearward of the fastener, and a side side insulating portion protruding forward from the rear side insulating portion and adjacent to the side of the fastener. (4) The guide rail installation structure according to any one of (1) to (3) (see Fig. 3 and Figs. 5 to 7), wherein the heat insulating member is a fire-resistant member. (5) The guide rail installation structure according to any one of (1) to (3) above, characterized in that the heat insulating member is made of wood (see Figs. 4 and 8). (6) A guide rail installation structure described in any one of (1) to (4) (see Figure 4), characterized in that the guide rail is fastened to the insulating member, and this insulating member is fastened to the wooden structure by the fastener. (7) The guide rail installation structure according to any one of (1) to (4) (see Figs. 5 to 7), wherein the heat insulating member is a fire-resistant fiber member. (8) A guide rail installation structure described in any one of (1) to (7) (see Figures 4 and 6 to 8), characterized in that the wooden structure has a wooden base and a fuel burner portion connected to the wooden base and protruding from the wooden base, and the guide rail is fastened to the fuel burner portion by the fastener and also to immovable portions above and below. [Explanation of symbols]

[0070] 1: Switchgear 10: Opening and closing body 20: Storage area 30: Fixed base frame 40A~40F: Guide rail 43: Insulation member support part 44, 45, 46: Thermal insulation material 45a: Rear insulation section 45b: Side insulation section A to F: Guide rail installation structure M1: Fastener X,X':Wooden frame Xa: Face Xb: Prospective surface a1~a3: Air layer x1: Wooden base x2: Fireproof material x3: Burning part

Claims

1. In a guide rail installation structure in which a guide rail for guiding an opening / closing body in a closing direction is fixed to a wooden structure by a fastener, The guide rail is formed hollow with the rear end side of the fastener therein, The fastener has a rear end side that is engaged in the guide rail and a front end side that is fastened to the wooden structure, A guide rail installation structure, characterized in that a heat insulating member having lower thermal conductivity than the guide rail is provided inside the guide rail so as to cover the rear end side of the fastener.

2. 2. The guide rail installation structure according to claim 1, wherein a heat insulating member support portion for supporting the heat insulating member is provided integrally with the guide rail inside the guide rail.

3. The guide rail installation structure described in claim 2, characterized in that the insulating member has a rear side insulating portion supported by the insulating member support portion and located rearward of the fastener, and a side side insulating portion protruding forward from the rear side insulating portion and adjacent to the side of the fastener.

4. 2. The guide rail installation structure according to claim 1, wherein the heat insulating member is a fire-resistant member.

5. 2. The guide rail installation structure according to claim 1, wherein the heat insulating member is made of wood.

6. 2. The guide rail installation structure according to claim 1, wherein the guide rail is fastened to the heat insulating member, and the heat insulating member is fastened to the wooden structure by the fastener.

7. 2. The guide rail installation structure according to claim 1, wherein the heat insulating material is a fire-resistant fiber material.

8. A guide rail installation structure as described in any one of claims 1 to 7, characterized in that the wooden structure has a wooden base and a burn-in portion connected to the wooden base and protruding from the wooden base, and the guide rail is fastened to the burn-in portion by the fastener and also to fixed portions above and below.

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