Composite building materials

Abstract

To provide a composite building material that enables a covering material to be firmly assembled to a hollow core material while facilitating the assembly and disassembly of the hollow core material and the covering material.SOLUTION: An embodiment of the present invention comprises an extruded long hollow core material 2 and covering materials 3A and 3B. The hollow core material 2 comprises: a pair of first engagement recesses 4 located on both ends in the width direction and extending in the length direction; and a second engagement recess 5 located on its main surface and extending in the length direction. The covering materials 3A, 3B comprises: a first covering portions 9 covering the main surface of the hollow core material 2; a pair of second covering portions 10 covering both ends in the width direction of the hollow core material 2; a pair of first engagement convex portions 11 each of which is protruding from each of the second pair of covering portions 10; and a second engagement convex portion 12 protruding from the first covering portion 9. The covering materials 3A and 3B covering the hollow core material 2 are integrally assembled together with the hollow core material 2 in a state that the first pair of engagement convex portions 11 are engaged in the first pair of engagement recesses 4 and the second pair of engagement convex portions 12 are engaged in the second pair of engagement recesses 5.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to composite building materials. [Background technology]

[0002] For example, there is a composite building material in which a synthetic resin covering material that covers a metal hollow core material is integrally assembled with the hollow core material (see, for example, Patent Document 1 below). Such a composite building material can achieve weight reduction while obtaining the mechanical strength of the hollow core material and the wood-like appearance and texture of the covering material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3597496 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the recent trend toward recycling, when disposing of the above-mentioned composite building materials, it is required that the hollow core material and covering material, which are made of different materials, be disassembled and collected separately.

[0005] For this reason, the invention described in Patent Document 1 above proposes a structure in which parts that fit together are provided on both sides of the width of the hollow core material and the covering material, and the covering material is assembled integrally to the hollow core material without using adhesive.

[0006] However, in the assembly structure described in Patent Document 1, a gap may occur between the opposing main surfaces of the hollow core material and the covering material, and the greater the width of the opposing main surfaces, the more likely such a gap may occur.

[0007] The present invention has been proposed in consideration of the above-mentioned conventional circumstances, and aims to provide a composite building material in which a covering material that covers a hollow core material is attached integrally to the hollow core material, which makes it possible to firmly attach the covering material to the hollow core material while facilitating the assembly and disassembly of the hollow core material and the covering material. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides the following means. [1] A device comprising an extruded long hollow core material and a covering material, the hollow core material has a pair of first locking recesses located at both widthwise ends thereof and extending in the lengthwise direction, and a second locking recess located on a main surface thereof and extending in the lengthwise direction, the covering material has a first covering portion covering a main surface of the hollow core material, a pair of second covering portions covering both side ends in the width direction of the hollow core material, a pair of first locking protrusions protruding from the pair of second covering portions, and a second locking protrusion protruding from the first covering portions; The hollow core material is provided with a pair of first locking protrusions locked in the pair of first locking recesses and a pair of second locking protrusions locked in the pair of second locking recesses. Both sides Covering a pair The covering material is integrally assembled with the hollow core material. 、 The hollow core material has a first partition wall separating one of the pair of covering materials, the first locking recess in which the first locking protrusion of one of the covering materials is locked, from the other first locking recess in which the first locking protrusion of the other covering material is locked, and a second partition wall separating one of the second locking recess in which the second locking protrusion of one of the covering materials is locked, from the other second locking recess in which the second locking protrusion of the other covering material is locked. A composite building material characterized by: [2] The covering material has a third engaging recess located between the first covering portion and the first engaging protrusion, which face each other, and extending in the longitudinal direction; The composite building material described in [1] above, characterized in that the hollow core material has a third locking protrusion that locks into the third locking recess. [3] The width of the second locking recess at the main surface of the hollow core material is smaller than the width at the bottom surface thereof, The composite building material according to [1], wherein the width of the second locking protrusion is smaller at the base end than at the tip end. 。 [Effects of the Invention]

[0009] As described above, according to the present invention, in a composite building material in which a covering material that covers a hollow core material is attached integrally to the hollow core material, it is possible to firmly attach the covering material to the hollow core material while facilitating the assembly and disassembly of the hollow core material and the covering material. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing the configuration of a composite building material according to one embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view showing the configuration of the composite building material shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view of a hollow core material that constitutes the composite building material shown in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view of a covering material that constitutes the composite building material shown in FIG. [Figure 5] FIG. 2 is a perspective view showing the configuration of a fence using the composite building material shown in FIG. [Figure 6] 2 is a cross-sectional view showing the composite building material shown in FIG. 1 attached to a support. FIG. [Figure 7] 2A, 2B, and 2C are front, side, and top views, respectively, of the configuration of a cover member that covers the end portion of the composite building material shown in FIG. 1. FIG. [Figure 8] FIG. 10 is a cross-sectional view showing an example of a configuration in which another composite building material is attached to a support pillar. [Figure 9] FIG. 10 is a cross-sectional view showing the configuration of a deck using another composite building material. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As one embodiment of the present invention, a composite building material 1 shown in, for example, FIGS. 1 to 4 will be described. Fig. 1 is a perspective view showing the configuration of the composite building material 1. Fig. 2 is a cross-sectional view showing the configuration of the composite building material 1. Fig. 3 is a cross-sectional view of a hollow core material 2 that constitutes the composite building material 1. Fig. 4 is a cross-sectional view of covering materials 3A and 3B that constitute the composite building material 1.

[0012] As shown in Figures 1 to 4, the composite building material 1 of this embodiment has a structure in which it comprises an extruded, long hollow core material 2 and a pair of covering materials 3A, 3B, and the pair of covering materials 3A, 3B that cover both sides of the hollow core material 2 are integrally assembled to the hollow core material 2.

[0013] The hollow core material 2 is formed into a substantially hollow flat plate shape by extruding a metal such as aluminum into a long length and then cutting it to a predetermined length. The hollow core material 2 has a pair of main wall portions 2a that form its opposite main surfaces and a pair of side wall portions 2b that form its opposite widthwise end portions.

[0014] The hollow core material 2 has a pair of first locking recesses 4 located at both widthwise ends thereof and extending in the longitudinal direction, a second locking recess 5 located on its main surface and extending in the longitudinal direction, and a pair of hollow holes 6 located between the pair of first locking recesses 4 and second locking recesses 5 and extending in the longitudinal direction.

[0015] A pair of first locking recesses 4 are provided corresponding to each of the pair of covering materials 3A, 3B. That is, the pair of first locking recesses 4 (hereinafter, referred to as "first locking recesses 4a" as necessary) corresponding to one covering material 3A of the pair of covering materials 3A, 3B is provided so as to cut out a concave shape on the side of one covering material 3A at both widthwise end portions of the hollow core material 2.

[0016] In contrast, a pair of first locking recesses 4 (hereinafter, distinguished as "first locking recesses 4b" as necessary) corresponding to the other covering material 3B are provided so as to cut out the other covering material 3B side at both widthwise end portions of the hollow core material 2 in a concave shape.

[0017] Furthermore, first partition walls 7 that separate one first locking recess 4a from the other first locking recess 4b are provided on both widthwise end portions of the hollow core material 2. The first partition walls 7 extend in the lengthwise direction of the hollow core material 2 while protruding from the center of the side wall portions 2b of the hollow core material 2.

[0018] The second locking recess 5 is provided corresponding to each of the pair of covering materials 3A, 3B. That is, the second locking recess 5 (hereinafter, referred to as "second locking recess 5a" as necessary) corresponding to one covering material 3A of the pair of covering materials 3A, 3B is provided by cutting out a recess in the main surface of the hollow core material 2 on the side facing one covering material 3A.

[0019] In contrast, the second locking recess 5 (hereinafter, referred to as the "second locking recess 5b" as necessary) corresponding to the other covering material 3B is provided by cutting out a concave shape in the main surface of the hollow core material 2 on the side facing the other covering material 3B.

[0020] Furthermore, a second partition wall 8 that separates one second locking recess 5a from the other second locking recess 5b is provided in the center in the width direction of the hollow core material 2. The second partition wall 8 extends in the length direction of the hollow core material 2 while connecting a pair of inner wall portions 2c located on both sides of the second partition wall 8.

[0021] The width Ws of the second locking recess 5 at the main surface of the hollow core material 2 is smaller than the width Wb of the second locking recess 5 at the bottom surface. In other words, the width Ws of the portion 2d of the main wall portion 2a constituting the main surface of the hollow core material 2 separated by the second locking recess 5 is smaller than the width Wb of the second partition wall 8 constituting the bottom surface of the second locking recess 5.

[0022] Therefore, the portion 2d of the main wall portion 2a divided by the second locking recess 5 protrudes in the direction facing each other beyond the pair of inner wall portions 2c.

[0023] The pair of hollow holes 6 are formed by spaces defined by a pair of main wall portions 2a, side wall portions 2b, and inner wall portions 2c.

[0024] The pair of covering materials 3A, 3B are formed into a substantially flat plate shape by extruding a synthetic resin such as ABS resin, ASA resin, polyethylene, polypropylene, or vinyl chloride into a long length and then cutting it to a predetermined length. The pair of covering materials 3A, 3B have symmetrical (identical) shapes, and each has a length corresponding to the hollow core material 2. Furthermore, the pair of covering materials 3A, 3B are given a wood-like appearance and texture by filling the resin with wood powder.

[0025] The pair of covering materials 3A and 3B may not only have the same color or pattern, but may also have different colors or patterns.

[0026] Each covering material 3A, 3B has a first covering portion 9 covering the main surface of the hollow core material 2, a pair of second covering portions 10 covering both side widthwise ends of the hollow core material 2, a pair of first locking protrusions 11 protruding from each of the pair of second covering portions 10, and a second locking protrusion 12 protruding from the first covering portion 9.

[0027] The first covering portion 9 corresponds to the main wall portion 2a of the hollow core material 2 and is formed in a flat plate shape with a thickness greater than that of the main wall portion 2a.

[0028] The pair of second covering portions 10 form portions that are bent at right angles in the same direction from both widthwise ends of the first covering portion 9.

[0029] The pair of first locking protrusions 11 form portions bent at right angles toward each other from the tips of the pair of second covering portions 10. In addition, the corners between the pair of second covering portions 10 and the pair of first locking protrusions 11 are provided with inclined surfaces 13 that cut out the corners obliquely.

[0030] Each covering material 3A, 3B has a third locking recess 14 extending in the longitudinal direction and located between the opposing first covering portion 9 and the first locking protrusion 11. The third locking recess 14 is provided so as to cut out a recessed portion between the first covering portion 9 and the first locking protrusion 11 of the second covering portion 10.

[0031] On the other hand, the hollow core material 2 has a third locking protrusion 15 corresponding to this third locking recess. The third locking protrusion 15 is formed by a portion of the main wall portion 2a that protrudes outward beyond the side wall portion 2b.

[0032] The second locking protrusion 12 is provided so as to protrude from the center of the first covering part 9 and extend in the length direction of the covering materials 3A and 3B.

[0033] The width Wp of the second locking protrusion 12 at its base end is smaller than the width Wt of the tip end. That is, both side surfaces of the second locking protrusion 12 are inclined in a reverse tapered manner so that the width Wp of the second locking protrusion 12 at its base end is smaller than the width Wt of the tip end.

[0034] In the composite building material 1 of this embodiment having the above-mentioned configuration, a pair of first locking protrusions 11 are locked into the pair of first locking recesses 4 described above, the second locking protrusion 12 is locked into the second locking recess 5, and the third locking protrusion 15 is locked into the third locking recess 14, and a pair of covering materials 3A, 3B that cover both sides of the hollow core material 2 are integrally assembled to the hollow core material 2.

[0035] In the composite building material 1 of this embodiment, the pair of covering materials 3A, 3B can be easily assembled to the hollow core material 2 by sliding the pair of covering materials 3A, 3B lengthwise from one end side of the hollow core material 2, or the pair of covering materials 3A, 3B can be easily removed (disassembled) from the hollow core material 2.

[0036] Furthermore, in the composite building material 1 of this embodiment, the second locking protrusion 12 is locked to the second locking recess 5 provided on the opposing main surfaces of the hollow core material 2 and the pair of covering materials 3A, 3B, thereby making it possible to prevent a gap from occurring between the opposing main surfaces of the hollow core material 2 and the pair of covering materials 3A, 3B, i.e., between the main wall portion 2a and the first covering portion 9.

[0037] Furthermore, in the composite building material 1 of this embodiment, the width Ws at the main surface of the hollow core material 2 is smaller than the width Wb at the bottom surface of the above-mentioned second locking recess 5, and the width Wp at the base end is smaller than the width Wt at the tip end of the second locking protrusion 12. This prevents the second locking protrusion 12 from slipping out from between the second locking recesses 5, and makes it possible to firmly assemble the pair of covering materials 3A, 3B to the hollow core material 2.

[0038] In addition, in the composite building material 1 of this embodiment, by covering almost the entire surface of the hollow core material 2 with a pair of covering materials 3A, 3B, the appearance can be made to have a wood-like appearance due to the covering materials 3A, 3B, making it look attractive.

[0039] In particular, in the composite building material 1 of this embodiment, the above-mentioned first partition wall 7 is located between the second covering portion 10 of the pair of covering materials 3A, 3B, and the inclined surface 13 is inclined toward this first partition wall 7, making it possible to make the gap formed between the pair of covering materials 3A, 3B less noticeable and improving the appearance of this area.

[0040] As described above, in the composite building material 1 of this embodiment, it is possible to firmly assemble the pair of covering materials 3A, 3B to the hollow core material 2 while facilitating the assembly and disassembly of the hollow core material 2 and the pair of covering materials 3A, 3B.

[0041] Furthermore, if the above-mentioned composite building material 1 is wide, it is also possible to arrange multiple of the above-mentioned second locking recesses 5 and second locking protrusions 12 in a line in the width direction of the hollow core material 2 and the covering materials 3A, 3B.

[0042] The use of the composite building material 1 of this embodiment is not particularly limited, but can be applied to a fence 100 as shown in Figures 5 and 6, for example. Figure 5 is a perspective view showing the configuration of the fence 100 using the composite building material 1. Figure 6 is a cross-sectional view showing the composite building material 1 attached to a support 101.

[0043] Specifically, in the fence 100 shown in Figures 5 and 6, multiple composite building materials 1 are arranged vertically between multiple posts 101 lined up in an upright position on a deck 200, and each composite building material 1 is fixed to the posts 101 with screws or the like.

[0044] The composite building material 1 of this embodiment can be lightweight, while providing mechanical strength from the hollow core material 2 and wood-like appearance and texture from the pair of covering materials 3A, 3B. Therefore, such a composite building material 1 can be suitably used for a fence 100.

[0045] When the composite building material 1 of this embodiment is applied to a fence 100, the corners of the fence 100 are formed by cutting the ends of adjacent composite building materials 1 diagonally and butting them together.

[0046] Furthermore, at the ends of the fence 100, the ends of the composite building material 1 are exposed, so for example, cover members 50 as shown in Figures 7(A) to (C) are attached to the ends of the composite building material 1 to cover the ends of the composite building material 1. Note that Figure 7(A) is a front view showing the configuration of the cover member 50, Figure 7(B) is a side view showing the configuration of the cover member 50, and Figure 7(C) is a top view showing the configuration of the cover member 50.

[0047] The cover member 50 is made of the same material as the covering materials 3A and 3B, and has a cover body 51 that covers the end of the composite building material 1, and a plurality of locking pieces 52 protruding from one side of the cover body 51.

[0048] The multiple locking pieces 52 are arranged side by side in the width direction of the hollow core material 2 at positions facing a pair of main wall portions 2a that define each hollow hole 6 of the hollow core material 2. In addition, a locking protrusion 52a is provided at the tip of each locking piece 52 so as to protrude toward the side facing the main wall portion 2a.

[0049] The cover member 50 has a plurality of locking pieces 52 inserted into the hollow holes 6, and with each locking piece 52 being deformed, the locking projections 52a are pressed against the main wall portion 2a. This allows the cover member 50 to be attached to the end of the composite building material 1.

[0050] In order to make it easier to remove the cover member 50 from the end of the composite building material 1 when disassembling the composite building material 1, a cutout portion 53 may be provided in a part of the cover body 51. In addition, the cover member 50 shown in Fig. 7 is provided with a pair of cutout portions 53 at both ends of the cover body 51 in the width direction.

[0051] The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the composite building material 1 described above has a configuration in which a pair of covering materials 3A, 3B are attached to both sides of the hollow core material 2, but the composite building material to which the present invention is applied is not necessarily limited to this configuration, and may have a configuration in which a covering material 3 is attached to only one side of the hollow core material 2, as in the composite building material 1A shown in Figures 8(A) and (B). Figures 8(A) and (B) are cross-sectional views showing an example configuration in which another composite building material 1A is attached to a support 101.

[0052] In this case, in the above-mentioned fence 100, multiple composite building materials 1A are arranged vertically between multiple pillars 101 lined up in an upright position on the deck 200, and each composite building material 1 is fixed to the pillars 101 by screws or the like.

[0053] 8(A) shows a configuration in which a pair of composite building materials 1A are attached to a support 101 in a state where they face each other. On the other hand, in the configuration shown in FIG. 8(B), a pair of composite building materials 1A are attached to a support 101 in a state where they face each other alternately.

[0054] Furthermore, the composite building material 1A may be used as a floor material for a deck 200, as shown in Fig. 9. Fig. 9 is a cross-sectional view showing the structure of a deck 200 using another composite building material 1A.

[0055] In the deck 200, a plurality of composite building materials 1A are arranged horizontally between a plurality of cross members 201 that make up the floor structure, and each composite building material 1A is fixed to the cross members 201 with screws or the like. [Explanation of symbols]

[0056] REFERENCE SIGNS LIST 1, 1A... composite building material 2... hollow core material 3, 3A, 3B... covering material 4... first locking recess 4a... one first locking recess 4b... other first locking recess 5... second locking recess 5a... one second locking recess 5b... other second locking recess 6... hollow hole 7... first partition wall 8... second partition wall 9... first covering portion 10... second covering portion 11... first locking protrusion 12... second locking protrusion 13... inclined surface 14... third locking recess 15... third locking protrusion

Claims

1. The device comprises an extruded elongated hollow core material and a covering material, the hollow core material has a pair of first locking recesses located at both widthwise ends thereof and extending in the lengthwise direction, and a second locking recess located on a main surface thereof and extending in the lengthwise direction, The covering material has a first covering portion covering a main surface of the hollow core material, a pair of second covering portions covering both side ends in the width direction of the hollow core material, a pair of first engaging protrusions protruding from the pair of second covering portions, and a second engaging protrusion protruding from the first covering portions, a pair of covering materials that cover both surfaces of the hollow core material are integrally assembled to the hollow core material with the pair of first engaging protrusions engaged with the pair of first engaging recesses and the second engaging protrusions engaged with the pair of second engaging recesses; A composite building material characterized in that the hollow core material has a first partition wall that separates one of the pair of covering materials, the first locking recess into which the first locking protrusion of one of the covering materials is locked, and the other first locking recess into which the first locking protrusion of the other covering material is locked, and a second partition wall that separates one of the second locking recesses into which the second locking protrusion of one of the covering materials is locked, and the other second locking recess into which the second locking protrusion of the other covering material is locked.

2. the covering material has a third engaging recess located between the first covering portion and the first engaging protrusion, the third engaging recess extending in the longitudinal direction, and 2. The composite building material according to claim 1, wherein the hollow core material has a third locking protrusion that is locked into the third locking recess.

3. the second engaging recess has a width at the main surface of the hollow core material that is smaller than a width at the bottom surface thereof; 2. The composite building material according to claim 1, wherein the width of the second locking projection at its base end is smaller than the width at its tip end.

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