Fire-resistant covering material fixtures and wood fire-resistant covering structures

Abstract

To easily attach a fire-resistant covering material while suppressing a decrease in heat insulating performance due to excessive crushing of the fire-resistant covering material when attaching the fire-resistant covering material to a non-metallic target member. [Solution] A fire-resistant covering material mounting tool (7A) for mounting a fire-resistant covering material (4) to a non-metallic target member (2A) comprises a mounting member (75A) having a shaft (76) formed so that one end (76s) can be inserted into the target member (2A) and a head (77) formed on the other end (76b) of the shaft (76); a base (71A) formed in a plate shape and having an insertion portion (78A) through which the shaft (76) can be inserted; and a foot (71f) standing from one surface (71f) of the base (71A) and formed shorter than the shaft (76). The height adjustment member 70A has a foot portion 72, and the foot portion 72 is formed so that it can penetrate the fire-resistant covering material 4 and abut against the surface 2f of the target member 2A. The insertion portion 78A is formed in a shape such that when the shaft portion 76 of the mounting member 75A is inserted into the insertion portion 78A from the other surface 71g side of the base portion 71A and one end 76s of the shaft portion 76 penetrates the fire-resistant covering material 4 and enters the target member 2A, the head portion 77 abuts against the base portion 71A.

Description

[Technical Field]

[0001] The present invention relates to a fire-resistant covering material mounting tool for mounting a fire-resistant covering material to a non-metallic target member, and to a wood fire-resistant covered structure. [Background technology]

[0002] BACKGROUND ART It is common practice to attach fire-resistant covering materials to members that constitute building structures. For example, Patent Document 1 discloses a configuration in which a fire-resistant coating made of inorganic fiber felt such as highly heat-resistant rock wool is attached to a steel beam or the like using post-welded pins or the like. The welding pin described in Patent Document 1 can be, for example, the stud welding pin described in Patent Document 2. Specifically, Patent Document 2 discloses a stud welding pin having a disk-shaped head and a rod-shaped leg standing on the head, both made of a conductive material, and in which the leg is welded at its tip by passing an electric current through it. In this stud welding pin, the tip of the leg is tapered with a concave tapered surface consisting of a curved surface that is concave outward.

[0003] Incidentally, pillars, beams, and walls of building structures are sometimes formed from wooden members, and a fire-resistant covering material made of, for example, a fiber-based insulating material in the form of felt is sometimes attached to these wooden members. Patent Document 3 discloses a fire-resistant structure in which the fire-resistant object is a wooden deck slab as described above, and the structure is provided with an inner layer covering the wooden deck slab and made of a material that contains moisture, an outer layer arranged on the outside of the inner layer and made of a material that contains air bubbles, and a metal retaining mechanism that holds the outer layer to the outside of the inner layer.

[0004] When attaching a fire-resistant covering to such non-metallic components, it is not possible to use a welding pin that is joined by welding, as described in Patent Document 2. Therefore, in such cases, the fire-resistant covering is sometimes attached to the target component by providing the fire-resistant covering on the surface of the target component and then driving nails or screwing screws into the target component so as to penetrate the fire-resistant covering. However, when attaching a fire-resistant covering to a target component in this manner, the fire-resistant covering may be excessively crushed toward the target component by driving a nail or screwing it in too deeply. In such cases, the fire-resistant covering may become excessively thin in the excessively crushed portion, or the amount of air contained within the fire-resistant covering may decrease, which may prevent the fire-resistant covering from exhibiting the desired thermal insulation performance. When attaching a fire-resistant covering material to a non-metallic target component, it is desirable to be able to easily attach the fire-resistant covering material while preventing the fire-resistant covering material from being excessively crushed and reducing its insulating performance. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2017-223074 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-246444 [Patent Document 3] Japanese Patent Publication No. 2020-66893 Summary of the Invention [Problem to be solved by the invention]

[0006] The problem that the present invention aims to solve is to provide a fire-resistant coating material mounting tool and a wood fire-resistant coating structure that can easily mount a fire-resistant coating material while preventing the fire-resistant coating material from being excessively crushed and reducing its insulating performance when mounting the fire-resistant coating material to a non-metallic target component. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention employs the following means. In other words, the fire-resistant coating material fastener of the present invention is a fire-resistant coating material fastener for attaching a fire-resistant coating material to a non-metallic target component, and comprises: a mounting member having a shank portion formed at one end so as to be able to penetrate the target component, and a head portion formed at the other end of the shank portion so as to protrude in a direction intersecting the shank portion; and a height adjustment member having a plate-shaped base portion having an insertion portion through which the shank portion can be inserted, and a foot portion rising from one surface of the base portion and formed shorter than the shank portion, wherein the foot portion is formed so as to be able to penetrate the fire-resistant coating material and abut against the surface of the target component, and the insertion portion is formed in a shape such that when the shank portion of the mounting member is inserted into the insertion portion from the side of the other surface of the base portion and the one end of the shank portion penetrates the fire-resistant coating material and into the target component, the head portion abuts against the base portion. According to the above-described configuration, the foot portion of the height-adjustable member, which is formed to rise from one surface of the base portion, is configured to be able to penetrate the fire-resistant covering material and abut against the surface of a non-metallic target component to which the fire-resistant covering material is to be attached (for example, a wooden component, or a non-metallic fire-resistant board such as gypsum board or calcium silicate board attached to the surface of a wooden component). Therefore, after the fire-resistant covering material is placed on the target component, when the foot portion of the height-adjustable member is directed toward the target component and inserted into the fire-resistant covering material, the foot portion penetrates the fire-resistant covering material and abuts against the surface of the target component. Then, the foot portion extends between the surface of the target component and the base portion of the height-adjustable member, leaving a fixed distance equal to the length of the foot portion. In this state, the mounting member is inserted into the insertion portion formed on the base portion from the other surface opposite the surface facing the target component, so that the shank of the mounting member can be inserted, and one end of the shank penetrates the fire-resistant covering material. Because the foot portion of the height adjustment member is formed shorter than the shank, one end of the mounting member reaches the target component and penetrates into the target component. In this way, the fire-resistant covering material is attached to the target component. When one end of the mounting member reaches the target component and continues to penetrate into the target component, the head of the mounting member, which protrudes in a direction intersecting the shank, reaches the base portion. The insertion portion formed on the base portion is shaped so that the head abuts the base portion when the shank of the mounting member is inserted through the insertion portion and penetrates the fire-resistant covering material, penetrating the target component with one end of the shank. Therefore, when the head reaches the base portion, it abuts the base portion. Even if the mounting member is subsequently attempted to penetrate further into the target component, this is prevented by the resistance of the foot portion extending between the base portion where the head of the mounting member abuts and the target component. This prevents the fire-resistant covering material from being excessively crushed, resulting in a reduction in insulation performance. Furthermore, to attach a fire-resistant covering to a target component using the fire-resistant covering attaching tool described above, it is sufficient to first place the fire-resistant covering on the surface of the target component, then pass the foot of the height-adjusting member through the fire-resistant covering and abut it against the surface of the target component, and then insert the shaft of the mounting member through the insertion portion and penetrate one end of the mounting member into the target component until the head of the mounting member abuts the base portion, without requiring any complicated procedures. Therefore, the fire-resistant covering can be easily attached to the target component. In this way, it is possible to provide a fire-resistant coating material mounting fixture that can easily mount a fire-resistant coating material while preventing the fire-resistant coating material from being excessively crushed and its insulating performance from being reduced when the fire-resistant coating material is attached to a non-metallic target component.

[0008] Furthermore, the fire-resistant wood covering structure of the present invention is a fire-resistant wood covering structure in which the fire-resistant covering material is attached to the target member using the fire-resistant covering material attaching fixture as described above, wherein the target member is either a wooden member such as a wooden pillar, beam, floor, or wall, a fire-resistant board provided on the surface of the wooden member, or both the wooden member and the fire-resistant board provided on the surface of the wooden member, and is characterized in that it comprises the fire-resistant covering material provided on the surface of the target member, and the fire-resistant covering material attaching fixture that attaches the fire-resistant covering material to the target member. According to this configuration, the target component is either a wooden member such as a wooden pillar, beam, floor, or wall, a fire-resistant board provided on the surface of a wooden member, or both a wooden member and a fire-resistant board provided on the surface of the wooden member, and by providing a fire-resistant coating material on the surface of the target component using the fire-resistant coating material mounting fixture described above, it is possible to provide a wooden fire-resistant coating structure that can easily mount the fire-resistant coating material while preventing the fire-resistant coating material from being excessively crushed and reducing its insulation performance. [Effects of the Invention]

[0009] According to the present invention, when attaching a fire-resistant coating material to a non-metallic target component, it is possible to easily attach the fire-resistant coating material while preventing the fire-resistant coating material from being excessively crushed, thereby reducing its insulating performance. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a vertical cross-sectional view showing the configuration of a wood fire-resistant covering structure according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of part II in FIG. [Figure 3] 10 is a cross-sectional view showing a portion where a fire-resistant covering material is attached to a target component using a fire-resistant covering material attaching tool. FIG. [Figure 4] FIG. 2 is a perspective view showing the configuration of a fire-resistant covering material mounting fixture. [Figure 5] FIG. 2 is a development view showing the shape of a metal plate that forms a height adjustment member for a fire-resistant covering material mounting fixture. [Figure 6]FIG. 3 is a vertical cross-sectional view showing the configuration of a fire-resistant wooden covering structure according to a first modified example of the embodiment. [Figure 7] FIG. 4 is a vertical cross-sectional view showing the configuration of a fire-resistant wooden covering structure according to a second modified example of the embodiment. [Figure 8] FIG. 10 is a vertical cross-sectional view showing the configuration of a fire-resistant wooden covering structure according to a third modified example of the embodiment. [Figure 9] FIG. 10 is a perspective view showing a modified example of the fire-resistant covering material mounting fixture. [Figure 10] FIG. 10 is a perspective view showing another modified example of the fire-resistant covering material mounting fixture. [Figure 11] FIG. 10 is a perspective view showing yet another modified example of the fire-resistant covering material mounting fixture. [Figure 12] FIG. 10 is a perspective view showing yet another modified example of the fire-resistant covering material mounting fixture. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention relates to a fire-resistant coating fixture for attaching fire-resistant coating to a non-metallic target component, and to a wood fire-resistant coating structure using the fire-resistant coating fixture. The fire-resistant coating fixture is composed of a height-adjustable member with feet for maintaining the fire-resistant coating at a predetermined thickness, and a mounting member that penetrates the fire-resistant coating and the height-adjustable member and attaches the fire-resistant coating to the target component. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, a description will be given of an embodiment of a fire-resistant covering material mounting tool and a wooden fire-resistant covering structure according to the present invention. A longitudinal cross-sectional view showing the configuration of a fire-resistant wood covering structure according to an embodiment of the present invention is shown in Fig. 1. Fig. 2 is a transverse cross-sectional view of part II in Fig. 1. 1, a fire-resistant wooden covering structure 1A in this embodiment is used as a column that constitutes the skeleton of a building. The fire-resistant wooden covering structure 1A includes a wooden column 2A and a fire-resistant covering material 4. The pillar 2A extends in the vertical direction. As a structural body of the building, the pillar 2A bears and supports the load of the building. The pillar 2A is non-metallic. In particular, in this embodiment, the pillar 2A is made of wood as described above. In this way, the pillar 2A is realized as a wooden member. As shown in FIG. 2, the cross-sectional shape of the pillar 2A in a plane perpendicular to the vertical direction is, for example, rectangular. In this embodiment, the fire-resistant covering material 4 described below is attached to the column 2A. That is, in this embodiment, the column 2A is the target component 2A to which the fire-resistant covering material 4 is attached. Therefore, hereinafter in this embodiment, the column 2A will be referred to as the target component 2A.

[0012] The fire-resistant coating material 4 is provided on the surface 2f of the target component 2A. The fire-resistant coating material 4 is provided so as to cover the entire surface 2f of the target component 2A, i.e., all four side surfaces 2f, except for the portion corresponding to the spacer 6, which will be described later. The fire-resistant coating material 4 is made of a fiber-based insulating material formed into a felt-like shape. The fire-resistant coating material 4 is made of, for example, a felt-like inorganic fiber-based insulating material such as heat-resistant rock wool, ceramic fiber, or alumina fiber, or a natural fiber-based insulating material such as cellulose fiber to which a flame retardant such as boric acid has been added. The fire-resistant covering material 4 is fixed onto the surface 2f of the target component 2A using a fire-resistant covering material fixture 7A, which will be described later. The fire-resistant covering material 4 is formed, for example, in a sheet shape, and is provided by wrapping or adhering it onto the surface 2f of the target component 2A, and then fixed to the surface 2f of the target component 2A by the fire-resistant covering material fixture 7A.

[0013] The wooden fire-resistant covering structure 1A has an exterior material 5 on its outer surface. The exterior material 5 is formed of wooden boards and decorative materials. The exterior material 5 may also have a base board and a facing material that is provided to cover the surface of the base board. The felt-like fiber insulation material used as the fire-resistant covering material 4 has a certain degree of flexibility, making it difficult to directly fix the exterior cladding material 5 to its exterior. For this reason, in this embodiment, a spacer 6, as described below, is fixed to the target component (column) 2A, and a fastening material (not shown) is inserted through the exterior cladding material 5 and spacer 6 and into the target component 2A, thereby fixing the exterior cladding material 5.

[0014] A plurality of spacers 6 are fixed to the target member 2A at intervals in the vertical direction on each surface 2f of the target member 2A facing all four directions. The spacer 6 is in the form of a strip extending horizontally. The spacer 6 is provided so as to cover the entire width of the target component 2A at the height at which the spacer 6 is provided. The spacer 6 has a thickness equal to or greater than that of the fire-resistant covering material 4. For example, a gypsum board cut to an appropriate size can be used as the spacer 6. In addition to gypsum board, for example, a calcium silicate board, a wood wool cement board, wood, etc. can also be used as the spacer 6. The spacer 6 is fixed to the target member 2A using, for example, nails, screws, tackers, adhesives, etc. as appropriate. As already explained, the exterior material 5 is fixed to the target member 2A and the spacer 6 by passing fastening materials (not shown) such as nails or screws through the exterior material 5 and the spacer 6 and penetrating into the target member 2A. If sufficient strength can be ensured, the exterior material 5 may be fixed to the spacer 6 using, for example, nails, screws, tackers, adhesives, etc. as appropriate.

[0015] Fig. 3 is a cross-sectional view showing a portion where a fire-resistant covering material is attached to a target member with a fire-resistant covering material attaching tool, and Fig. 4 is a perspective view showing the configuration of the fire-resistant covering material attaching tool. The wooden fire-resistant covering structure 1A is provided with a fire-resistant covering material mounting fixture 7A. The fire-resistant covering material mounting fixture 7A is used to mount the fire-resistant covering material 4 to a non-metallic target member 2A. As shown in Figures 3 and 4, the fire-resistant covering material mounting fixture 7A includes a height adjustment member 70A and a mounting member 75A. The height adjustment member 70A includes a base plate portion 71A and a foot portion 72. The base plate portion 71A is formed in a plate shape. In this embodiment, the base plate portion 71A is formed in, for example, a disk shape. An insertion portion 78A is formed in the base plate portion 71A. In this embodiment, the insertion portion 78A is a through-hole formed in the center of the base plate portion 71A so as to penetrate the base plate portion 71A in the plate thickness direction. A shaft portion 76 of the mounting member 75A, which will be described later, can be inserted into this insertion portion 78A. The foot portion 72 rises from one surface 71f of the base portion 71A in a direction intersecting the surface 71f. In this embodiment, a plurality of (e.g., three) foot portions 72 are provided at intervals in the circumferential direction on the outer periphery of the base portion 71A. The foot portions 72 are formed thin enough to penetrate the fire-resistant covering material 4 when their tips are brought into contact with the fire-resistant covering material 4 and force is applied to insert the foot portions 72 toward the fire-resistant covering material 4. In this manner, the foot portions 72 are formed so as to penetrate the fire-resistant covering material 4 and be able to come into contact with the surface 2f of the target component 2A. The multiple foot portions 72 are formed to have the same length from the base portion 71A. In particular, the multiple foot portions 72 are formed so as to be shorter than the thickness of the fire-resistant covering material 4.

[0016] FIG. 5 is a development view showing the shape of the metal plate forming the height adjusting member of the fire-resistant covering material fastener. 5, to form such height adjustment member 70A, for example, first, metal plate 70p is punched to have a first portion 71p having an outer contour shape corresponding to base portion 71A and a plurality of second portions 72p that protrude outward from first portion 71p and have shapes corresponding to foot portions 72. Thereafter, the plurality of second portions 72p of metal plate 70p are bent to one side with respect to first portion 71p at the outer periphery of first portion 71p, thereby forming height adjustment member 70A as shown in FIG.

[0017] As shown in FIGS. 3 and 4, the mounting member 75A includes a shaft 76 and a head 77. One end 76s of the shaft 76 is formed so that its outer diameter gradually decreases. When the one end 76s of the shaft 76 is placed against the surface 2f of the wooden target member 2A and a force is applied to the shaft 76 toward the target member 2A, the one end 76s is formed with a sharp shape that allows the one end 76s to penetrate into the target member 2A. In this manner, the one end 76s of the shaft 76 is formed so that it can penetrate into the target member 2A. In this embodiment, the mounting member 75A is, for example, a nail. The shaft 76 is formed so that it is longer than the foot 72 of the height adjustment member 70A. In other words, the foot 72 of the height adjustment member 70A is formed so that it is shorter than the shaft 76. The head 77 is formed at the other end 76b of the shaft 76, which is located opposite the one end 76s, so as to protrude from the surface of the shaft 76 in a direction intersecting the direction in which the axis of the shaft 76 extends. In this embodiment, the head 77 is formed, for example, in the shape of a circular plate. In this mounting member 75A, the shank 76 has an outer diameter smaller than that of the insertion portion 78A and is formed so as to be insertable into the insertion portion 78A. Furthermore, the head 77 is formed so as to have an outer diameter larger than that of the insertion portion 78A. In other words, the insertion portion 78A of the height adjustment member 70A is formed to have a diameter larger than that of the shank 76 and a diameter smaller than that of the head 77. In this way, the insertion portion 78A is formed in a shape such that when the shank 76 of the mounting member 75A is inserted into the insertion portion 78A and penetrates the fire-resistant covering material 4 so that one end 76s of the shank 76 is inserted into the target member 2A, the head 77 abuts against the base portion 71A.

[0018] To attach the fire-resistant covering material 4 to a non-metallic target component (column) 2A using this fire-resistant covering material attaching tool 7A, the fire-resistant covering material 4 is placed on the surface 2f of the target component 2A, and then the foot portion 72 of the height-adjusting member 70A is inserted toward the fire-resistant covering material 4 and abuts against the surface 2f of the target component 2A. In this state, the foot portion 72 extends between the surface 2f of the target component 2A and the base portion 71A of the height-adjusting member 70A, leaving a fixed distance equal to the length of the foot portion 72. Then, the shaft portion 76 of the mounting member 75A is inserted through the insertion portion 78A from the other surface 71g of the base portion 71A, penetrating the fire-resistant covering material 4. Because the foot portion 72 of the height-adjusting member 70A is shorter than the shaft portion 76, one end 76s of the mounting member 75A reaches and penetrates the target component 2A. In this way, the fire-resistant covering material 4 is attached to the target component 2A. When one end 76s of the mounting member 75A reaches the target member 2A and continues to penetrate into the target member 2A, the head 77 of the mounting member 75A, which is formed to protrude in a direction intersecting the shaft 76, reaches the base plate 71A. Here, the insertion portion 78A formed on the base plate 71A is formed with a smaller diameter than the head 77. Therefore, when the head 77 reaches the base plate 71A, the head 77 abuts against the base plate 71A. Thereafter, even if the mounting member 75A is attempted to be further penetrated into the target member 2A, this is prevented by the resistance of the foot 72 provided extending between the base plate 71A, against which the head 77 of the mounting member 75A abuts, and the target member 2A. In this way, the fire-resistant covering material 4 is prevented from being excessively compressed when it is attached by the fire-resistant covering material attachment tool 7A.

[0019] As already explained, the multiple legs 72 are formed to be shorter than the thickness of the fire-resistant covering material 4. Therefore, in the area where the fire-resistant covering material mounting fixture 7A is provided, the fire-resistant covering material 4 is pressed moderately toward the target component 2A by the base portion 71A. This causes a frictional force to act between the fire-resistant covering material 4 and the target component 2A. This frictional force prevents the fire-resistant covering material 4 from moving relative to the target component 2A.

[0020] The fire-resistant covering material fastener 7A as described above is a fire-resistant covering material fastener 7A for fastening a fire-resistant covering material 4 to a non-metallic (wooden) target member (pillar) 2A, and includes a mounting member 75A having a shaft portion 76 formed so that one end 76s can be inserted into the target member 2A and a head portion 77 formed at the other end 76b of the shaft portion 76 so as to protrude in a direction intersecting the shaft portion 76; a base portion 71A formed in a plate shape and having an insertion portion 78A through which the shaft portion 76 can be inserted; and a surface 71f of the base portion 71A. and a height adjustment member 70A having a foot 72 rising from the fire-resistant covering material 4 and formed shorter than the shaft 76, the foot 72 being formed so as to be able to penetrate the fire-resistant covering material 4 and abut against the surface 2f of the target member 2A, and the insertion portion 78A is formed in a shape such that when the shaft 76 of the mounting member 75A is inserted into the insertion portion 78A from the other surface 71g side of the base portion 71A and one end 76s of the shaft 76 penetrates the fire-resistant covering material 4 and enters the target member 2A, the head 77 abuts against the base portion 71A. According to the above-described configuration, the foot portions 72 of the height adjustment member 70A, which are formed to rise from one surface 71f of the base portion 71A, are configured to be able to penetrate the fire-resistant covering material 4 and come into contact with the surface 2f of a non-metallic target component 2A (e.g., a wooden component, or a non-metallic fire-resistant board such as gypsum board or calcium silicate board provided on the surface of a wooden component) to which the fire-resistant covering material 4 is to be attached. Therefore, when the fire-resistant covering material 4 is provided on the target component 2A and the foot portions 72 of the height adjustment member 70A are inserted into the fire-resistant covering material 4, facing the target component 2A, the foot portions 72 penetrate the fire-resistant covering material 4 and come into contact with the surface 2f of the target component 2A. Then, the foot portions 72 extend between the surface 2f of the target component 2A and the base portion 71A of the height adjustment member 70A, leaving a fixed distance equal to the length of the foot portions 72. In this state, the mounting member 75A is inserted into the insertion portion 78A formed on the base portion 71A from the other surface 71g of the base portion 71A, opposite the one surface 71f that faces the surface 2f of the target component 2A, so that the shaft portion 76 of the mounting member 75A can be inserted therethrough, and one end 76s of the shaft portion 76 penetrates the fire-resistant covering material 4. Because the foot portion 72 of the height adjustment member 70A is formed shorter than the shaft portion 76, the one end 76s of the mounting member 75A reaches the target component 2A and penetrates into the target component 2A. In this manner, the fire-resistant covering material 4 is attached to the target component 2A. When one end 76s of the mounting member 75A reaches the target component 2A and continues to penetrate into the target component 2A, the head 77 of the mounting member 75A, which protrudes in a direction intersecting the shank 76, reaches the base portion 71A. The insertion portion 78A formed on the base portion 71A is shaped so that the head 77 abuts against the base portion 71A when the shank 76 of the mounting member 75A is inserted through the insertion portion 78A and penetrates the fire-resistant covering material 4, causing the one end 76s of the shank 76 to penetrate into the target component 2A. Therefore, when the head 77 reaches the base portion 71A, the head 77 abuts against the base portion 71A. Thereafter, even if the mounting member 75A is further penetrated into the target component 2A, this is prevented by the resistance of the foot 72 extending between the base portion 71A, against which the head 77 of the mounting member 75A abuts, and the target component 2A. This prevents the fire-resistant covering material 4 from being excessively crushed, which would otherwise reduce the heat insulating performance. Furthermore, to attach the fire-resistant covering material 4 to the target member 2A using the fire-resistant covering material attaching tool 7A as described above, the fire-resistant covering material 4 is placed on the surface 2f of the target member 2A, and then the foot portion 72 of the height-adjusting member 70A is passed through toward the fire-resistant covering material 4 and brought into contact with the surface 2f of the target member 2A. Thereafter, the shaft portion 76 of the mounting member 75A is inserted into the insertion portion 78A, and one end 76s of the mounting member 75A is inserted into the target member 2A until the head portion 77 of the mounting member 75A contacts the base portion 71A. This does not require any complicated procedures. Therefore, the fire-resistant covering material 4 can be easily attached to the target member 2A. In this way, it is possible to provide a fire-resistant coating material mounting fixture 7A that can easily mount the fire-resistant coating material 4 while preventing the fire-resistant coating material 4 from being excessively crushed and reducing its insulating performance when mounting the fire-resistant coating material 4 to a non-metallic target component 2A.

[0021] Furthermore, the above-described wooden fire-resistant coated structure 1A is a wooden fire-resistant coated structure 1A in which a fire-resistant coating material 4 is attached to a target member 2A using the above-described fire-resistant coating material attachment fixture 7A, and the target member 2A is a wooden member that is a wooden pillar, and is equipped with a fire-resistant coating material 4 provided on the surface 2f of the target member 2A and a fire-resistant coating material attachment fixture 7A that attaches the fire-resistant coating material 4 to the target member 2A. According to this configuration, a wooden member, which is a wooden pillar, is used as the target member 2A, and a fire-resistant coating material 4 is attached to the surface 2f of the target member 2A using the fire-resistant coating material attachment device 7A described above. This makes it possible to provide a wooden fire-resistant coating structure 1A in which the fire-resistant coating material 4 can be easily attached while preventing the fire-resistant coating material 4 from being excessively crushed, thereby reducing its insulating performance.

[0022] In addition, the height adjustment member 70A is formed by bending the second portion 72p of a punched metal plate 70p relative to the first portion 71p so as to have a first portion 71p having an outer contour shape corresponding to the base portion 71A and a second portion 72p having a shape corresponding to the foot portion 72 and protruding outward from the first portion 71p. According to this configuration, a height adjustment member 70A having a base portion 71A and a foot portion 72 can be easily formed by punching a metal plate 70p having a first portion 71p and a second portion 72p and bending the second portion 72p relative to the first portion 71p.

[0023] The mounting member 75A is a nail. With this configuration, the mounting member 75A can be properly realized.

[0024] Furthermore, the multiple legs 72 are formed so as to be shorter than the thickness of the fire-resistant covering material 4. With the above configuration, after the fire-resistant covering material 4 is placed on the surface 2f of the target component 2A, the foot 72 of the height-adjusting member 70A is directed toward the target component 2A, inserted into the fire-resistant covering material 4, penetrated through the fire-resistant covering material 4, and brought into contact with the surface 2f of the target component 2A. In this state, the fire-resistant covering material 4 is moderately compressed toward the target component 2A by the base portion 71A in the area where the fire-resistant covering material fastener 7A is provided. This creates a frictional force between the fire-resistant covering material 4 and the target component 2A. This frictional force prevents the fire-resistant covering material 4 from moving relative to the target component 2A. In this way, the fire-resistant covering material 4 is efficiently fixed to the target component 2A.

[0025] (First Modification of the Embodiment) The fire-resistant covering material mounting fixture and wood fire-resistant covering structure of the present invention are not limited to the above-described embodiment explained with reference to the drawings, and various modifications are possible within the technical scope. FIG. 6 is a vertical cross-sectional view showing the configuration of a fire-resistant wooden covering structure according to a first modified example of the above embodiment. As shown in FIG. 6, the fire-resistant wooden covering structure 1B includes a wooden pillar 2B, a fire-resistant board 3B, and a fire-resistant covering material 4. The pillar 2B extends in the vertical direction. The fire-resistant board 3B is provided on the surface 2f of the column 2B. In this embodiment, the fire-resistant board 3B is a gypsum board. The fire-resistant board 3B is provided so as to cover the surface 2f of the column 2B, i.e., the entire surface of each of the four side surfaces 2f of the column 2B. The fire-resistant board 3B is fixed to the column 2B using nails, screws, tackers, adhesives, etc. as appropriate. In this modification, the fire-resistant covering material 4 is attached to the fire-resistant board 3B. That is, in this modification, the fire-resistant board 3B is the target component 3B to which the fire-resistant covering material 4 is attached. Therefore, hereinafter in this embodiment, the fire-resistant board 3B will be referred to as the target component 3B. In this modification, the spacer 6 is fixed to the target member 3B so as to protrude outward from the surface 3f of the target member 3B.

[0026] The fire-resistant covering material 4 is provided on the surface 3f of the target component 3B. The fire-resistant covering material 4 is provided so as to cover the entire surface 3f of the target component 3B, i.e., all four side surfaces 3f, of the wood fire-resistant covering structure 1B, except for the portions corresponding to the spacers 6. The fire-resistant covering material 4 is made of a fibrous insulating material formed into a felt-like material. The fire-resistant covering material 4 is fixed onto the surface 3f of the target component 3B using a fire-resistant covering material fixture 7A. In this modification, the height adjustment member 70A of the fire-resistant covering material fixture 7A is provided so that the foot portion 72 penetrates the fire-resistant covering material 4 and abuts against the surface 3f of the target component 3B. The mounting member 75A is provided so that the shaft portion 76 is inserted into the insertion portion 78A (see FIG. 4, etc.) from the other surface 71g side of the base portion 71A, penetrates the fire-resistant covering material 4, and one end 76s penetrates into the target component 3B. In this modification, the shaft portion 76 of the mounting member 75A terminates inside the fire-resistant plate 3B, and the one end 76s is positioned inside the fire-resistant plate 3B.

[0027] As described above, the fire-resistant covering material fastener 7A of this modified example is a fire-resistant covering material fastener 7A for fastening the fire-resistant covering material 4 to a non-metallic target member (fire-resistant board) 3B, and includes a mounting member 75A having a shaft portion 76 formed so that one end 76s can be inserted into the target member 3B and a head portion 77 formed at the other end 76b (see FIG. 4, etc.) of the shaft portion 76 so as to protrude in a direction intersecting the shaft portion 76; a base portion 71A formed in a plate shape and having an insertion portion 78A (see FIG. 4, etc.) through which the shaft portion 76 can be inserted; The height adjustment member 70A includes a foot 72 that rises from one surface 71f and is formed shorter than the shaft 76, and the foot 72 is formed so that it can penetrate the fire-resistant covering material 4 and abut against the surface 3f of the target member 3B, and the insertion portion 78A is formed in a shape such that when the shaft 76 of the mounting member 75A is inserted into the insertion portion 78A from the side of the other surface 71g of the base portion 71A and one end 76s of the shaft 76 penetrates the fire-resistant covering material 4 and into the target member 3B, the head 77 abuts against the base portion 71A. Furthermore, the above-described wooden fire-resistant coated structure 1B is a wooden fire-resistant coated structure 1B in which a fire-resistant coating material 4 is attached to a target member (fire-resistant board) 3B using the above-described fire-resistant coating material attachment tool 7A, and the target member 3B is a fire-resistant board 3B provided on the surface 2f of a wooden member which is a wooden pillar 2B, and is equipped with a fire-resistant coating material 4 provided on the surface 3f of the target member 3B and a fire-resistant coating material attachment tool 7A that attaches the fire-resistant coating material 4 to the target member 3B. Even with this configuration, when attaching the fire-resistant coating material 4 to the non-metallic target component 3B, the fire-resistant coating material 4 can be easily attached while preventing the fire-resistant coating material 4 from being excessively crushed, thereby reducing its insulating performance.

[0028] (Second Modification of the Embodiment) For example, in the first modified example described above using Figure 6, the fire-resistant covering material mounting fixture 7A is attached to the fire-resistant board 3B fixed to the column 2B, and at this time, one end 76s of the shaft portion 76 of the mounting member 75A is described as being inserted into the fire-resistant board 3B and terminating inside the fire-resistant board 3B, but this is not limited to this. FIG. 7 is a vertical cross-sectional view showing the configuration of a fire-resistant wooden covering structure according to a second modification of the above embodiment. 7, the shaft 76 of the mounting member 75A may be provided so that one end 76s penetrates the fire-resistant board 3B, then reaches the wooden member, the pillar 2B, and further penetrates into the wooden member, the pillar 2B. In this case, the target member to which the fire-resistant covering material mounting fixture 7A is attached can be considered to be both the wooden member 2B and the fire-resistant board 3B provided on the surface 2f of the wooden member 2B, i.e., the portion where the fire-resistant board 3B is superimposed on the wooden member 2B.

[0029] That is, the fire-resistant covering material fastener 7A of this modified example is a fire-resistant covering material fastener 7A for fastening a fire-resistant covering material 4 to a non-metallic target member (both a wooden member 2B and a fire-resistant board 3B provided on a surface 2f of the wooden member 2B), and includes a mounting member 75A having a shaft portion 76 formed so that one end 76s can be inserted into the target member, and a head portion 77 formed at the other end 76b of the shaft portion 76 (see FIG. 4, etc.) so as to protrude in a direction intersecting the shaft portion 76, and a plate-shaped insertion portion 78A (see FIG. 4, etc.) through which the shaft portion 76 can be inserted. and a height adjustment member 70A having a base portion 71A and a foot portion 72 rising from one surface 71f of the base portion 71A and formed shorter than the shaft portion 76, the foot portion 72 being formed so as to be able to penetrate the fire-resistant covering material 4 and abut against the surface 3f of the target member, and the insertion portion 78A is formed in a shape such that when the shaft portion 76 of the mounting member 75A is inserted into the insertion portion 78A from the side of the other surface 71g of the base portion 71A and one end 76s of the shaft portion 76 penetrates the fire-resistant covering material 4 and enters the target member, the head portion 77 abuts against the base portion 71A. Furthermore, the wooden fire-resistant coated structure 1B is a wooden fire-resistant coated structure in which a fire-resistant coating material 4 is attached to a target member (both the wooden member 2B and the fire-resistant board 3B provided on the surface 2f of the wooden member 2B) using the fire-resistant coating material attachment device 7A described above, and the target member is both the column 2B on which the fire-resistant board 3B is provided and the fire-resistant board 3B, and is equipped with the fire-resistant coating material 4 provided on the surface 3f of the target member and the fire-resistant coating material attachment device 7A that attaches the fire-resistant coating material 4 to the target member. Even with this configuration, when attaching the fire-resistant coating material 4 to a non-metallic target component, the fire-resistant coating material 4 can be easily attached while preventing the fire-resistant coating material 4 from being excessively crushed, thereby reducing its insulating performance.

[0030] (Third Modification of the Embodiment) Furthermore, in the above embodiment and its first modification, the wood fire-resistant covering structures 1A and 1B are applied to pillars, but this is not limitative. FIG. 8 is a vertical cross-sectional view showing the configuration of a fire-resistant wooden covering structure according to a third modified example. As shown in Fig. 8, a modified wooden fire-resistant covered structure 1C is applied to a beam that constitutes the skeleton of a building. The wooden fire-resistant covered structure 1C includes a target member 2C, which is a wooden beam, a fire-resistant covering material 4, and a fire-resistant covering material mounting fixture 7A. The target member (beam) 2C supports a floor slab 11. The target component 2C extends horizontally, which is the extension direction of the beam. The target component 2C is made of a non-metallic wooden component.

[0031] The fire-resistant covering material 4 is provided on the surface 2f of the target component 2C. The fire-resistant covering material 4 is fixed onto the surface 2f of the target component 2C using a fire-resistant covering material fixture 7A. The fire-resistant covering material fixture 7A is used to attach the fire-resistant covering material 4 to the non-metallic target component 2C. The fire-resistant covering material fixture 7A includes a mounting member 75A and a height adjustment member 70A. To attach the fire-resistant covering material 4 to a non-metallic target member (beam) 2C using the fire-resistant covering material attaching tool 7A, the fire-resistant covering material 4 is placed on the surface 2f of the target member 2C, and then the foot portion 72 of the height adjustment member 70A is inserted toward the fire-resistant covering material 4 and abuts against the surface 2f of the target member 2C. Then, as shown in Fig. 3, the shaft portion 76 of the mounting member 75A is inserted into the insertion portion 78A, and one end 76s of the mounting member 75A is inserted into the target member 2C until the head portion 77 abuts against the base portion 71A.

[0032] (Other Modifications of the Embodiment) The fire-resistant covering material mounting fixture and wood fire-resistant covering structure of the present invention are not limited to the above-mentioned embodiments and modifications described with reference to the drawings, and various other modifications are possible within the technical scope.

[0033] For example, the wood fire-resistant covering structure can be applied not only to pillars and beams but also to floors and walls. Furthermore, when a wood fire-resistant covering structure is applied to beams, floors, or walls, the fire-resistant covering material may be attached directly to the beams, floors, or walls using a fire-resistant covering material mounting fixture, or may be attached to a fire-resistant board such as gypsum board installed on the surface of the beams, floors, or walls using a fire-resistant covering material mounting fixture. In other words, a wood fire-resistant coated structure is a wood fire-resistant coated structure in which a fire-resistant coating material is attached to a target member using the fire-resistant coating material attachment device described above, and the target member is either a wooden member such as a wooden pillar, beam, floor, or wall, a fire-resistant board such as gypsum board attached to the surface of the wooden member, or both a wooden member and a fire-resistant board attached to the surface of the wooden member, and is equipped with a fire-resistant coating material attached to the surface of the target member and a fire-resistant coating material attachment device that attaches the fire-resistant coating material to the target member.

[0034] Furthermore, in the above embodiment, nails are used as the mounting members 75A of the fire-resistant covering material mounting fixture 7A, but screws may be used instead of nails. Alternatively, a staple-like member may be used as the mounting member for the fire-resistant covering material mounting fixture 7A. FIG. 9 is a perspective view showing a modified example of the fire-resistant covering material mounting fixture. In the fire-resistant covering material mounting tool 7D shown in Fig. 9, the mounting member 75D includes a pair of shanks 76 arranged parallel to each other and a head 77 connecting the pair of shanks 76. The shanks 76 are formed so that one end 76s can be inserted into the target member. The head 77 is formed linearly on the other end 76b of each of the pair of shanks 76 so as to protrude in a direction intersecting each of the shanks 76, specifically in the direction in which the pair of shanks 76 face each other. In this way, the mounting member 75D is formed in the shape of a staple. A pair of insertion portions 78D, into which each of the pair of shaft portions 76 is inserted, is formed on the base portion 71D of the height adjustment member 70D, corresponding to each of the pair of shaft portions 76. In this modification, each of the insertion portions 78D is a through-hole formed, for example, in an elliptical shape. In this case, when the pair of shafts 76 are inserted into the corresponding insertion portions 78D from the other surface 71g of the base portion 71D and the shafts 76 are moved toward the one surface 71f, the heads 77 connecting the pair of shafts 76 come into contact with the center portion 71c between the pair of insertion portions 78D, which is located in the center of the base portion 71D, thereby preventing the shafts 76 from moving further toward the one surface 71f. This prevents the fire-resistant covering material from being excessively crushed, which would reduce its thermal insulation performance.

[0035] FIG. 10 is a perspective view showing another modified example of the fire-resistant covering material mounting fixture. When a staple-shaped mounting member 75D is used, in the height adjustment member 70D of the fire-resistant covering material mounting fixture 7D, each insertion portion 78E may be formed, for example, as a rectangle with one side formed in an arc shape. FIG. 11 is a perspective view showing still another modified example of the fire-resistant covering material mounting fixture. As shown in FIG. 11, in a height adjustment member 70D of a fire-resistant covering material mounting fixture 7D, each insertion portion 78F may be circular.

[0036] FIG. 12 is a perspective view showing yet another modified example of the base plate portion of the height adjusting member of the fire-resistant covering material fastener. In the above embodiment and each modified example, the insertion portion is a through hole provided inside the base plate of the height adjustment member, but the insertion portion is not limited to this as long as it is formed in a shape that allows the shaft of the height adjustment member to be inserted therethrough and that allows the head of the shaft to abut against the base plate when inserted. For example, as shown in Fig. 12, in the base plate 71G of the height adjustment member 70G, the insertion portion 78G may be a slit formed by cutting from the outer periphery of the base plate 71G to the inside.

[0037] Furthermore, the base plate portions 71A, 71D of the fire-resistant covering material mounting fixtures 7A, 7D are not limited to being disk-shaped, and may be in any other suitable shape, such as a rectangular plate. In addition, the configurations given in the above embodiments can be selected or changed as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0038] 1A~1C Wooden fire-resistant covering structure 71f One surface 2A, 2C Target member (column, beam) 71g Other surface 2f Surface of target part 72 Foot 3B Target material (fireproof board) 75A, 75D Mounting material 3f Surface of target material 76 Shaft 4 Fireproof covering material 76b Other end 7A, 7D Fireproof coating material attachment 76s One end 70A, 70D, 70G Height adjustment member 77 Head 71A, 71D, 71G board section 78A, 78D, 78E, 78F, 78G Insertion part

Claims

1. A fire-resistant coating material attachment tool for attaching a fire-resistant coating material to a non-metallic target member, comprising: an attachment member including a shaft portion having one end formed so as to be able to penetrate into the target member, and a head portion formed at the other end of the shaft portion so as to protrude in a direction intersecting the shaft portion; a height adjustment member including a base portion formed in a plate shape and having an insertion portion through which the shaft portion can be inserted, and a foot portion rising from one surface of the base portion and formed shorter than the shaft portion; Equipped with The foot portion is formed so as to be able to penetrate the fire-resistant covering material and come into contact with the surface of the target component, The shaft portion of the mounting member is inserted into the insertion portion from the other surface side of the base portion, and the insertion portion is formed in a shape such that when the one end of the shaft portion penetrates the fire-resistant covering material and enters the target member, the head portion abuts against the base portion. A fire-resistant covering material mounting fixture characterized by:

2. A wood fire-resistant covered structure in which the fire-resistant covering material is attached to the target member using the fire-resistant covering material attaching tool according to claim 1, The target component is any one of a wooden component such as a wooden pillar, beam, floor, or wall, a fire-resistant board provided on the surface of the wooden component, or both the wooden component and the fire-resistant board provided on the surface of the wooden component, The fire-resistant coating material provided on the surface of the target component; the fire-resistant covering material attaching tool that attaches the fire-resistant covering material to the target member; A wood fire-resistant covering structure characterized by comprising:

Images