Assembly block

Abstract

To reduce the weight of individual blocks to improve their transportability and workability when assembled together.SOLUTION: An assembly block 1 comprises a face member 10 that forms a predetermined shape by combining a plurality of the face members to form a face, and a fixing member 20 that extends in a direction orthogonal to the face of the face member 10 and connects a pair of face members 10 facing each other. In the face member 10, a first plate 11 disposed on an inner side and a second plate 12 disposed on an outer side are arranged in an overlapping manner. A step is formed at a side edge of the face member 10. A cavity is formed between the pair of face members 10, and the assembly block 1 is engageable with another assembly block 1 at the step.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building block. [Background technology]

[0002] For example, Patent Document 1 proposes a wooden block for forming a wall, which is formed into a rectangular shape with a core sandwiched between a front board and a back board, and which is stacked with identical shaped blocks vertically and horizontally to form a self-supporting wall, and which is characterized in that tenons that intersect at right angles are protruded from one of the horizontal surfaces that meet the upper and lower blocks, and one of the vertical surfaces that meet the left and right blocks, and grooves are provided on the other horizontal and vertical surfaces into which tenons protruding from the other blocks in the above-mentioned positions are fitted, and bolt holes are provided that pass through the top and bottom of the block.

[0003] According to the wall-forming wooden blocks of Patent Document 1, it is possible to form walls of various sizes by connecting blocks standardized to the same shape vertically and horizontally. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 4-155040 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the block described in Patent Document 1 has a core sandwiched between the front and back panels, which increases the weight of each block, resulting in problems such as reduced transportability and workability when assembling the blocks.

[0006] The present invention has been made to solve these problems, and has an object to reduce the weight of each block and improve transportability and workability when assembling them. [Means for solving the problem]

[0007] (1) A composite block for forming a predetermined shape by combining a plurality of components, A surface member that forms a surface; A fixing member extending in a direction perpendicular to the surface of the plane member and connecting the pair of plane members facing each other, The surface member is A first plate material disposed on the inside and a second plate material disposed on the outside are overlapped, A step is formed on the side edge of the surface member, A cavity is formed between the pair of surface members, A assembly block capable of engaging with another assembly block at the step.

[0008] According to the invention (1), the assembled block includes a pair of surface members and a fixing member that connects the pair of surface members, and can be assembled together to form a predetermined shape. The surface member defines a surface. The fixing member extends in a direction perpendicular to the surfaces of the planar members, and connects the pair of opposing planar members. The surface member has a first plate member disposed on the inside and a second plate member disposed on the outside, which are overlapped with each other, and a step is formed on the side edge. The assembly block has a cavity formed between the pair of surface members, and is capable of engaging with another assembly block at the step of the surface members.

[0009] In this way, by forming a cavity between a pair of surface members that form a surface, the weight of each block can be reduced compared to when a core member is provided between the pair of surface members. Therefore, it is possible to reduce the weight of each block, improving transportability and workability when assembling the blocks.

[0010] In addition, by forming a cavity between a pair of surface members that form a surface, any material (e.g., sand, concrete, pipes, electrical wires, etc.) can be placed between the pair of surface members, making it possible to combine multiple construction blocks to construct structures for a variety of purposes.

[0011] (2) An assembly block as described in (1), wherein the fixing members each penetrate the first plate members of a pair of the surface members and have their ends connected to the second plate members of the pair of the surface members.

[0012] According to the invention (2), the fixing members penetrate the first plate members of the pair of surface members, respectively, and have ends connected to the second plate members of the pair of surface members, respectively. As a result, for example, if the second plate material arranged on the outside becomes dirty or damaged, it is possible to replace just that second plate material while maintaining the shape of the assembly block.

[0013] (3) The fixing member connects the first plate members of the pair of the surface members, The assembly block according to (1), wherein the second plate material is removably fixed to the first plate material.

[0014] According to the invention (3), the fixing member connects the first plate members of the pair of surface members, and the second plate member is detachably fixed to the first plate member. As a result, for example, if the second plate material arranged on the outside becomes dirty or damaged, it is possible to replace just that second plate material while maintaining the shape of the assembly block. Effect of the Invention

[0015] According to the present invention, it is possible to reduce the weight of each block, thereby improving transportability and workability when assembling the blocks. [Brief description of the drawings]

[0016] [Figure 1] 1A to 1C are diagrams illustrating an example of use of a construction block according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a perspective view of a construction block according to an embodiment of the present invention. [Diagram 3] FIG. 2 is an exploded perspective view of a construction block according to an embodiment of the present invention. [Figure 4] 11A to 11C are diagrams illustrating an example of use of a construction block according to another embodiment of the present invention. [Diagram 5] FIG. 11 is a perspective view of a construction block according to another embodiment of the present invention. [Figure 6] FIG. 11 is an exploded perspective view of a construction block according to another embodiment of the present invention. [Figure 7] 11A to 11C are diagrams illustrating an example of use of a construction block according to another embodiment of the present invention. [Figure 8] FIG. 13 is a perspective view of a construction block according to a modified example of the embodiment of the present invention. [Figure 9] 13 is a perspective view of a first plate material according to a modified example of the embodiment of the present invention. [Figure 10] FIG. 11 is a perspective view of a second plate material according to a modified example of the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter, referred to as embodiments) will be described in detail with reference to the accompanying drawings.

[0018] <Embodiment> [Composition of the assembly block] FIG. 1 is a diagram for explaining an example of use of a construction block according to an embodiment of the present invention. A plurality of assembly blocks 1 are combined to form a predetermined shape (for example, any building material, fixture, object, etc.). A plurality of assembly blocks 1 can be combined to form a predetermined shape, and then disassembled individually. For this reason, the assembly block 1 can be used for one purpose, such as the construction of a temporary structure that is temporarily constructed and then needs to be removed. In the following explanation, an example in which the assembly block is made of wood is described, but the assembly block is not limited to wood, and can be made of any material such as resin or concrete, as long as it can be formed into a plate shape. Also, a "assembly block" is a block that can be formed into a predetermined shape by combining multiple blocks together.

[0019] In the example shown in FIG. 1, the composite block 1 is used as a member for forming a wall to be provided on a concrete block 100 constructed as the foundation of a structure, for example.

[0020] FIG. 2 is a perspective view of a composite block according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a composite block according to an embodiment of the present invention. The assembly block 1 includes a pair of surface members 10 and a fixing member 20 that fixes the pair of surface members 10 at a predetermined interval. The surface members 10 and the fixing member 20 may be made of natural solid wood or may be made of processed wood such as laminated wood.

[0021] The surface member 10 is a plate member having a surface, and is formed into a predetermined shape when viewed from the surface direction. In the example shown in Fig. 2 and Fig. 3, the surface member 10 is formed into a rectangular shape when viewed from the surface direction, but is not limited thereto, and may be formed into any shape such as a square shape, a hexagonal shape, an octagonal shape, or the like.

[0022] The surface member 10 is composed of a first plate material 11 arranged on the inside and facing inward and outward, and a second plate material 12 arranged on the outside and facing inward and outward, which are stacked on top of each other, and a step is formed by the side edges of the first plate material 11 and the side edges of the second plate material 12.

[0023] The first plate material 11 is formed such that its outer dimensions as viewed from the surface direction are larger than those of the second plate material 12 by a first predetermined dimension (for example, 10 to 20 mm, etc.). For example, in the example shown in FIG. 3, the first plate material 11 is formed in a rectangular shape as viewed from the surface direction, with dimensions of 390 mm in width and 190 mm in height. On the other hand, the first plate material 11 is formed in a rectangular shape as viewed from the surface direction, with dimensions of 380 mm in width and 180 mm in height. The first plate material 11 and the second plate material 12 can be formed to any dimensions depending on the application and aesthetics.

[0024] In addition, the second plate material 12 is fixed by the fixing member 20, and when it is arranged overlapping the first plate material 11, the second plate material 12 is arranged at a position lower than the first plate material 11 in the up-down direction by a second predetermined dimension (for example, 10 to 20 mm) when viewed from the surface direction, and is arranged at a position shifted to one side (the right side in the example shown in FIG. 2) from the first plate material 11 by the second predetermined dimension (for example, 10 to 20 mm, etc.) in the left-right direction. Note that the first predetermined dimension and the second predetermined dimension are not limited to being the same dimension, and may be different dimensions. By configuring the surface member 10 in this manner, a step is formed around the entire periphery of the side edge of the surface member 10 by the side edge of the first plate material 11 and the side edge of the second plate material 12.

[0025] The second board 12 may be made of a different wood material from that of the first board 11. For example, the first board 11 serving as a base material may be made of laminated wood, and the second board 12 serving as a finishing material may be made of natural solid wood. The second board 12 may have a pattern or the like formed (painted, printed, engraved, pasted, etc.) on the outer surface.

[0026] 3, the first plate material 11 is formed with a through hole 111 through which a part of the fixing member 20 (an engagement portion 22 described later) penetrates. The through hole 111 is formed at a position corresponding to the part of the fixing member 20 (an engagement portion 22 described later) and in a shape corresponding to the part of the fixing member 20 (an engagement portion 22 described later) (for example, in the example shown in FIG. 3, a rectangular shape extending in the vertical direction). In the example shown in FIG. 3, the pair of surface members 10 are fixed by two fixing members 20, so two through holes 111 are provided.

[0027] Moreover, it is desirable that the inner shape of the through hole 111 is formed to be substantially the same shape as the outer shape of a part (an engagement portion 22 described later) of the fixing member 20. In other words, it is desirable that the first plate material 11 does not shift relative to the fixing member 20 when a part of the fixing member 20 penetrates the through hole 111.

[0028] As shown in Fig. 3, the second plate 12 is formed with a groove 121 that engages with a tip portion of a part of the fixing member 20 (an engagement portion 22 described later). The groove 121 extends from the lower end of the second plate 12 to an intermediate position (a position not reaching the upper end of the second plate 12). The groove 121 is disposed at a position overlapping with the through hole 111 of the first plate 11 in the left-right direction, and is formed at a position corresponding to the fixing member 20 and in a shape corresponding to the fixing member 20 (for example, in the example shown in Fig. 3, a rectangular shape extending in the up-down direction). In the example shown in Fig. 3, the pair of surface members 10 are fixed by two fixing members 20, so two grooves 121 are provided.

[0029] Moreover, it is preferable that the width of the groove 121 is formed to be substantially the same dimension as the width of a tip portion of a part (an engagement portion 22 described later) of the fixing member 20. In other words, it is preferable that the second plate material 12 does not shift relative to the fixing member 20 when the tip portion of the part of the fixing member 20 is engaged with the groove 121.

[0030] Moreover, the upper end position of the groove 121 is desirably a position where the second plate material 12 is disposed at a position that is a second predetermined dimension (for example, 10 to 20 mm) lower in the up-down direction than the first plate material 11 with the upper end of the groove 121 abutting against the upper end of a portion of the fixing member 20. This improves workability because the second plate material 12 is disposed at an appropriate position simply by abutting the upper end of the groove 121 of the second plate material 12 against the upper end of a portion of the fixing member 20.

[0031] The fixing member 20 is disposed between a pair of surface members 10 (first plate members 11) and is formed of a plate member having a surface extending in the vertical direction. The fixing member 20 includes a spacing retaining portion 21 that retains the spacing between the pair of surface members 10 (first plate members 11) at a third predetermined dimension (e.g., 110 mm, etc.), and a pair of engagement portions 22 that protrude from side edges of the spacing retaining portion 21 in a direction perpendicular to the vertical direction and engage with the pair of surface members 10, respectively.

[0032] The spacing portion 21 has a width perpendicular to the up-down direction that is a third predetermined dimension (e.g., 110 mm, etc.), and a height that is substantially the same dimension as the height of the first plate material 11. This allows the side surface of the spacing portion 21 to support a wider range of the inner surface of the first plate material 11. Furthermore, since the spacing portion 21 extends to the upper end of the assembly block 1, when stacking the assembly blocks 1, it becomes possible to grasp the spacing portion 21 and lift the assembly blocks 1, improving workability.

[0033] The engaging portion 22 extends from the middle position of the side edge of the spacing portion 21 in a direction perpendicular to the surface of the surface member 10, and is formed with a height smaller than the height of the spacing portion 21. The length of the engaging portion 22 in the direction perpendicular to the surface of the surface member 10 (the length from the side surface of the spacing portion 21 to the tip) is greater than the thickness dimension of the first plate material 11 and smaller than the combined dimension of the thickness dimension of the first plate material 11 and the thickness dimension of the second plate material 12. As a result, the tip side of the engaging portion 22 penetrates the through hole 111 of the first plate material 11 and engages with the groove 121 of the second plate material 12 without protruding from the outer surface of the second plate material 12.

[0034] In the example shown in Figures 2 and 3, two fixing members 20 are provided in the assembly block 1 at a predetermined distance in the left-right direction, but any number of fixing members 20 can be provided depending on the left-right width of the assembly block 1 and the required strength.

[0035] [How to assemble the assembly blocks] Next, a method for assembling the assembly blocks will be described with reference to FIG. First, the pair of engagement portions 22 of the fixing member 20 are inserted into the through holes 111 of the pair of first plate materials 11, respectively, and the inner surface of the first plate materials 11 is brought into contact with the side surface of the spacing portion 21. As a result, the pair of first plate materials 11 are fixed to the fixing member 20, and the engagement portions 22 of the fixing member 20 protrude from the outer surface side of the first plate materials 11.

[0036] Next, the upper ends of the pair of engagement parts 22 protruding from the outer surface side of the pair of first plate materials 11 are aligned with the lower ends of the grooves 121 of the pair of second plate materials 12, and the second plate materials 12 are pressed from top to bottom to bring the upper ends of the grooves 121 into contact with the upper ends of the engagement parts 22. As a result, the pair of second plate materials 12 are fixed to the fixing member 20, and the second plate material 12 is arranged in a state where it is overlapped on the first plate material 11, and is arranged in a position that is lower than the first plate material 11 in the vertical direction by a second predetermined dimension when viewed from the surface direction, and is arranged in a position shifted to one side (the right side in the example shown in FIG. 2) from the first plate material 11 in the left-right direction by a second predetermined dimension, so that a step is formed by the side edge of the first plate material 11 and the side edge of the second plate material 12, and a cavity is formed between the pair of surface members 10, and the assembly block 1 shown in FIG. 2 is formed.

[0037] Other Examples of the Embodiments [Another example of the composition of the assembly blocks] The assembled block 1A according to the other embodiment is different from the assembled block 1 according to the above embodiment mainly in the configuration of the fixing member. In the following description, the same components as those in the assembled block 1 according to the above embodiment are denoted by the same reference numerals, and the description thereof will be omitted or simplified.

[0038] FIG. 4 is a diagram for explaining an example of use of a construction block according to another embodiment of the present invention. Like the assembled block 1, the assembled block 1A can be assembled together to form a predetermined shape and then disassembled into individual pieces. For this reason, like the assembled block 1, the assembled block 1A can be used for one purpose, such as the construction of a temporary structure that is temporarily constructed and then needs to be removed. In the example shown in Fig. 4, the assembled block 1A is used, like the assembled block 1 shown in Fig. 1, as a member for forming a wall to be provided on a concrete block 100 constructed as the foundation of a structure.

[0039] FIG. 5 is a perspective view of a composite block according to another embodiment of the present invention. FIG. 6 is an exploded perspective view of a composite block according to another embodiment of the present invention. The assembled block 1A includes a pair of surface members 10A and a fixing member 30 that fixes the pair of surface members 10A at a predetermined interval. The surface members 10A and the fixing member 30 may be made of natural solid wood or may be made of processed wood such as laminated wood.

[0040] The surface member 10A is a plate member having a surface, and is formed into a predetermined shape when viewed from the surface direction. In the example shown in Fig. 5 and Fig. 6, the surface member 10A is formed into a rectangular shape when viewed from the surface direction, but is not limited thereto, and may be formed into any shape such as a square shape, a hexagonal shape, an octagonal shape, or the like.

[0041] The surface member 10A is composed of a first plate material 11A arranged on the inside and facing inward and outward, and a second plate material 12A arranged on the outside and facing inward and outward, which are stacked on top of each other, and a step is formed by the side edge of the first plate material 11A and the side edge of the second plate material 12A.

[0042] The first plate material 11A is formed such that the outer dimensions as viewed from the surface direction are larger than those of the second plate material 12A by a first predetermined dimension (for example, 10 to 20 mm, etc.). For example, in the example shown in FIG. 3, the first plate material 11A is formed in a rectangular shape as viewed from the surface direction, and is formed with dimensions of 390 mm in width and 190 mm in height. On the other hand, the first plate material 11A is formed in a rectangular shape as viewed from the surface direction, and is formed with dimensions of 380 mm in width and 180 mm in height. The first plate material 11A and the second plate material 12A can be formed to any dimensions depending on the application and aesthetics.

[0043] In addition, the second plate material 12A is fixed by the fixing member 30, and when it is placed on top of the first plate material 11A, the second plate material 12A is placed at a position lower than the first plate material 11A by a second predetermined dimension (for example, 10 to 20 mm) in the vertical direction when viewed from the surface direction, and is placed at a position shifted by the second predetermined dimension (for example, 10 to 20 mm, etc.) to one side (the right side in the example shown in FIG. 2) from the first plate material 11A in the horizontal direction. Note that the first predetermined dimension and the second predetermined dimension are not limited to being the same dimension, and may be different dimensions. By configuring the surface member 10A in this way, a step is formed around the entire periphery of the side edge of the surface member 10A by the side edge of the first plate material 11A and the side edge of the second plate material 12A.

[0044] The second board 12A may be made of a different wood material from the first board 11A. For example, the first board 11A, which serves as a base material, may be made of laminated wood, and the second board 12A, which serves as a finishing material, may be made of natural solid wood. The second board 12A may have a pattern or the like formed (painted, printed, engraved, pasted, etc.) on the outer surface.

[0045] 6, the first plate material 11A has a through hole 111A through which a part of the fixing member 30 (such as a first engagement portion 311 described later) passes or fits. The first plate material 11A has an engagement groove 111B that engages with a part of the fixing member 30 (an engagement protrusion 310b described later).

[0046] The through hole 111A is formed as an opening in a position corresponding to a part of the fixing member 30 (such as the first engagement portion 311 described later), in a shape corresponding to the part of the fixing member 30 (for example, in the example shown in FIG. 6, a rectangular shape extending in the vertical direction), and along the direction in which the part of the fixing member 30 extends.

[0047] The through holes 111A include those that extend downward from the upper end of the first plate material 11A and those that extend upward from the lower end of the first plate material 11A. When the first plate material 11A and the second plate material 12A are fixed by the fixing member 30, the through holes 111A (through holes 111A' in the example shown in FIG. 6) that are arranged at positions overlapping with grooves 121A of the second plate material 12A described later are penetrated by parts of the fixing member 30 (first engagement portion 311 described later, etc.). The other through holes 111A are fitted with parts of the fixing member 30 (second engagement portion 312 described later, etc.).

[0048] Moreover, it is preferable that the inner shape of the through hole 111A is formed to be substantially the same shape as the outer shape of a part (a first engagement portion 311 and a second engagement portion 312 described later) of the fixing member 30. In other words, it is preferable that the first plate material 11A does not shift relative to the fixing member 30 when a part of the fixing member 30 passes through or is fitted into the through hole 111A.

[0049] The engagement groove 111B is formed at a position corresponding to a part of the fixed member 30 (the engagement protrusion 310b described later) and in a shape corresponding to the part of the fixed member 30 (the engagement protrusion 310b described later) (for example, in the example shown in FIG. 6, it is a groove shape extending in the vertical direction).

[0050] The engagement groove 111B extends from an end of the through hole 111A in the vertical direction to an end of the first plate material 11A. Specifically, if the through hole 111A extends downward from the upper end of the first plate material 11A, the engagement groove 111B extends from the lower end of the through hole 111A to the lower end of the first plate material 11A, and if the through hole 111A extends upward from the lower end of the first plate material 11A, the engagement groove 111B extends from the upper end of the through hole 111A to the upper end of the first plate material 11A.

[0051] As shown in FIG. 6, the second plate 12A is formed with a groove 121A that engages with a tip portion of a part of the fixing member 30 (a first engagement portion 311 described later). The groove 121A extends from the lower end of the second plate 12A to an intermediate position (a position not reaching the upper end of the second plate 12A). The groove 121A is arranged at a position overlapping a specific through hole 111A (through hole 111A' in the example shown in FIG. 6) of the first plate 11A in the left-right direction, and is formed at a position corresponding to the fixing member 30 and in a shape corresponding to the fixing member 30 (for example, a rectangular shape extending in the up-down direction in the example shown in FIG. 6). In the example shown in FIG. 6, one groove 121A is formed in each second plate 12A, but this is not limited thereto, and a plurality of grooves 121A may be formed according to the number, positions, etc. of the fixing members 30.

[0052] Moreover, it is preferable that the width of the groove 121A is formed to be substantially the same dimension as the width of a tip portion of a part (first engagement portion 311 described later) of the fixing member 30. In other words, it is preferable that the second plate material 12A does not shift relative to the fixing member 30 in a state in which the tip portion of the part of the fixing member 30 is engaged with the groove 121A.

[0053] Moreover, the upper end position of groove 121A is desirably a position where second plate material 12A is disposed at a position that is a second predetermined dimension (for example, 10 to 20 mm) lower in the up-down direction than first plate material 11A in a state where the upper end of groove 121A abuts against the upper end of a portion of fixing member 30. This improves workability because second plate material 12A is disposed at an appropriate position simply by abutting the upper end of groove 121A of second plate material 12A against the upper end of a portion of fixing member 30.

[0054] The fixing member 30 is disposed between a pair of surface members 10A (first plate members 11A) and is formed by combining a first member 31 and a second member 32, which are plate members having surfaces extending in the vertical direction, so as to intersect. Note that, in the example shown in Fig. 6, two fixing members 30 are provided in one assembly block 1A, but this is not limiting, and one, three or more fixing members may be provided.

[0055] The first member 31 comprises a spacing retaining portion 310 that retains the spacing between a pair of surface members 10A (first plate material 11A) at a third predetermined dimension (e.g., 110 mm, etc.), and a first engagement portion 311 or a second engagement portion 312 that protrudes from the lower end side of the side edge of the spacing retaining portion 310 in a direction perpendicular to the up-down direction and engages with the pair of surface members 10A, respectively.

[0056] The second member 32 comprises a spacing retaining portion 310 that retains the spacing between the pair of surface members 10A (first plate material 11A) at a third predetermined dimension (e.g., 110 mm, etc.), and second engagement portions 312 that protrude from the upper end side of the side edge of the spacing retaining portion 310 in a direction perpendicular to the up-down direction and engage with each of the pair of surface members 10A.

[0057] The spacing portion 310 is formed with a height substantially equal to the height of the first plate material 11A, and a notch 310a is formed in the center of the surface for the first member 31 and the second member 32 to engage with each other. The notch 310a in the first member 31 is a groove that extends downward from the upper end of the first member 31 to the center in the vertical direction. The notch 310a in the second member 32 is a groove that extends upward from the lower end of the second member 32 to the center in the vertical direction. The width of the notch 310a is formed with a dimension substantially equal to the thickness of the first member 31 and the second member 32.

[0058] The first member 31 and the second member 32 engage with each other in an X-shape when viewed from the top and bottom direction by combining the notches 310a with each other, thereby improving the strength of the surface member 10A against distortion in the surface direction.

[0059] The angle between the surface of the first member 31 and the surface of the second member 32 can be any angle depending on the width of the first plate material 11A, the third specified dimension which is the distance between the pair of surface members 10A (first plate materials 11A), and the number of fixing members 30 (for example, two in the example shown in Figure 6).

[0060] Further, an engagement protrusion 310b is formed on the side edge of the spacing portion 310 in a portion where the first engagement portion 311 or the second engagement portion 312 is not formed. The engagement protrusion 310b extends from the end of the spacing portion 310 along the side edge of the spacing portion 310 to the first engagement portion 311 or the second engagement portion 312. The engagement protrusion 310b engages with the engagement groove 111B of the first plate material 11A in a state where the fixing member 30 and the first plate material 11A are engaged. This makes it possible to prevent the first plate material 11A from shifting laterally with respect to the fixing member 30.

[0061] The first engagement portion 311 is formed on the side edge of the spacing portion 310 and extends from the lower end of the first member 31 to the middle position of the side edge of the spacing portion 310. The first engagement portion 311 extends from the side edge of the spacing portion 310 in a direction perpendicular to the surface of the surface member 10A, and is formed with a dimension smaller than the height of the spacing portion 310. In addition, the length of the first engagement portion 311 in the direction perpendicular to the surface of the surface member 10A (the length from the side surface of the spacing portion 310 to the tip) is formed with a dimension larger than the thickness dimension of the first plate material 11A and smaller than the combined dimension of the thickness dimension of the first plate material 11A and the thickness dimension of the second plate material 12A. As a result, the tip side of the first engagement portion 311 penetrates the through hole 111A of the first plate material 11A and engages with the groove 121A of the second plate material 12A in a state where it does not protrude from the outer surface of the second plate material 12A.

[0062] The second engagement portion 312 is formed on the side edge of the spacing portion 310, and extends from the lower end of the first member 31 to the middle position of the side edge of the spacing portion 310, or from the upper end of the second member 32 to the middle position of the side edge of the spacing portion 310. The second engagement portion 312 extends from the side edge of the spacing portion 310 in a direction perpendicular to the surface of the surface member 10A, and is formed with a height smaller than the height of the spacing portion 310. In addition, the length of the second engagement portion 312 in the direction perpendicular to the surface of the surface member 10A (the length from the side surface of the spacing portion 310 to the tip) is formed with a dimension substantially equal to the thickness dimension of the first plate material 11A. As a result, the tip side of the second engagement portion 312 fits into the through hole 111A of the first plate material 11A.

[0063] In the example shown in FIG. 6, two fixing members 30 are provided, and in one fixing member 30, a first engagement portion 311 is formed on one side of the first member 31, and a second engagement portion 312 is formed on the other side. In the other fixing member 30, the first engagement portion 311 is formed on the other side of the first member 31, and a second engagement portion 312 is formed on one side. As a result, in the example shown in FIG. 6, one second plate material 12A is supported by the first engagement portion 311 of one fixing member 30, and the other second plate material 12A is supported by the first engagement portion 311 of the other fixing member 30. However, the present invention is not limited to this embodiment, and the first engagement portions 311 may be provided on both sides of the first member 31, and one fixing member 30 may support the second plate materials 12A on both sides.

[0064] 6, the first engagement portion 311 supporting the second plate material 12A is formed on the first member 31 disposed on the lower side, but this is not limiting and it may be formed on the second member 32 disposed on the upper side. In this case, the groove 121A of the second plate material 12A is formed so as to extend from the upper end of the second plate material 12A to an intermediate position (a position not reaching the lower end of the second plate material 12A).

[0065] In the example shown in Figures 5 and 6, two fixing members 30 are provided in the assembly block 1A at a predetermined distance in the left-right direction, but any number of fixing members 30 can be provided depending on the left-right width of the assembly block 1A and the required strength.

[0066] Increasing the number of fixing members 30 increases the number of parts to be machined on the first plate material 11A (e.g., through holes 111A, etc.), and the processing becomes more complicated. In this case, the manufacturer of the assembled blocks (woodworking shop, etc.) needs equipment and techniques that enable advanced processing. However, not all manufacturers have such advanced equipment. For this reason, by adjusting the number of fixing members 30 and the difficulty of the parts to be machined on the first plate material 11A according to the manufacturer's equipment and techniques, more manufacturers will be able to manufacture assembled blocks, and it will be possible to increase demand in the woodworking industry as a whole.

[0067] [Another example of assembly method for composite blocks] Next, with reference to FIG. 6, a method for assembling a composite block according to another embodiment will be described. First, a pair of first plate materials 11A are arranged at an interval of a third predetermined dimension, and the notches 310a of the first member 31 and the second member 32 are combined so as to sandwich them from above and below to form a fixing member 30 in a state in which the pair of first plate materials 11A is held. As a result, the first engagement portion 311 of the fixing member 30 penetrates the through hole 111A' of the first plate material 11A, the second engagement portion 312 of the fixing member 30 fits into the through hole 111A of the first plate material 11A, and the engagement protrusion 310b of the fixing member 30 engages with the engagement groove 111B of the first plate material 11A. In this state, the tip side of the first engagement portion 311 of the fixing member 30 protrudes outside the first plate material 11A.

[0068] Next, the upper ends of the first engagement parts 311 protruding from the outer surface side of the first plate material 11A are aligned with the lower ends of the grooves 121A of the second plate material 12A, and the second plate material 12A is pushed from above to below to bring the upper ends of the grooves 121A into contact with the upper ends of the first engagement parts 311. As a result, the second plate material 12A is fixed to the fixing member 30, and the second plate material 12A is arranged in a state where it is overlapped with the first plate material 11A, and is arranged in a position that is a second predetermined dimension lower than the first plate material 11A in the vertical direction when viewed from the surface direction, and is arranged in a position shifted to one side (the right side in the example shown in FIG. 5) from the first plate material 11A in the left-right direction, so that a step is formed by the side edges of the first plate material 11A and the side edges of the second plate material 12A, and a cavity is formed between the pair of surface members 10A, and the assembly block 1A shown in FIG. 5 is formed.

[0069] FIG. 7 is a diagram for explaining an example of use of a combination block according to another embodiment of the present invention.

[0070] The worker inserts the first plate 11A protruding from the side edge of the second plate 12A on one side (e.g., the left side) of a certain assembly block 1A between a pair of second plate materials 12A on the other side (e.g., the right side) of another assembly block 1A arranged on one side of the assembly block 1A. This combines the certain assembly block 1A with the other assembly block 1A arranged on one side of the certain assembly block 1A. Also, on the upper side of the certain assembly block 1A, the first plate 11A protruding from the side edge of the second plate material 12A is inserted between a pair of second plate materials 12A on the lower side of the other assembly block 1A arranged on the upper side of the certain assembly block 1A. This combines the certain assembly block 1A with the other assembly block 1A arranged on the upper side of the certain assembly block 1A.

[0071] As described above, a worker can combine multiple assembly blocks 1A to form a wall 200 as shown in Fig. 7. The floor of the example shown in Fig. 7 is formed by stacking concrete blocks in a grid shape, and then combining multiple assembly blocks 1A on top of the grid and connecting them horizontally in the same manner as the wall 200. Note that, although the method of combining assembly blocks 1A according to another example has been described using Fig. 7, the assembly blocks according to this embodiment and the modified examples described later can also be combined in the same manner to form a predetermined shape such as a wall.

[0072] <Modifications of the embodiment> [Configuration of modified assembly blocks] The assembled block 1B according to the modified example is different from the assembled block 1 according to the above embodiment mainly in the configuration of the surface members. In the following description, the same components as those in the assembled block 1 according to the above embodiment are denoted by the same reference numerals, and the description thereof will be omitted or simplified.

[0073] FIG. 8 is a perspective view of a composite block according to a modified embodiment of the present invention. FIG. 9 is a perspective view of a first plate material according to a modified example of the embodiment of the present invention. The assembled block 1B includes a pair of surface members 10B and a fixing member 40 that fixes the pair of surface members 10B at a predetermined interval. The surface members 10B and the fixing member 40 may be made of natural solid wood or may be made of processed wood such as laminated wood.

[0074] The surface member 10B is formed by stacking a first plate material 11B arranged on the inside facing inward and outward and a second plate material 12B arranged on the outside facing inward and outward, and a step is formed on the side edge. While the surface members 1 and 1A form a step between the side edges of the first plate material and the second plate material, the surface member 10B has a step formed on the side edge of the first plate material 11B.

[0075] As shown in FIG. 9, the first plate material 11B has steps 112 formed on the outer surface side of the upper edge, the inner surface side of the lower edge, the outer surface side of one side edge in the left-right direction (the left side in the example shown in FIG. 9), and the inner surface side of the other side edge in the left-right direction (the right side in the example shown in FIG. 9).

[0076] The steps 112 formed on the upper and lower edges extend over the entire length in the left-right direction, and have a height dimension equal to the first predetermined dimension (for example, 10 to 20 mm). The step 112 formed on the left and right side edges extends over the entire length in the up and down direction, and has a width dimension equal to the second predetermined dimension (for example, 10 to 20 mm). It is desirable that the width of the step 112 in the thickness direction of the first plate material 11B (the inner / outer direction in FIG. 9) is approximately half the thickness dimension of the first plate material 11B. For example, when the thickness of the first plate material 11B is 15 to 25 mm, it is desirable that the width of the step 112 in the thickness direction of the first plate material 11B is 7 mm to 12 mm.

[0077] By forming such a step 112, the first plate material 11B is positioned such that the position of the outer surface 11Ba arranged on the outside, as viewed from the surface direction, is positioned at a second predetermined dimension (e.g., 10 to 20 mm) lower in the vertical direction than the inner surface 11Bb arranged on the inside, and is shifted to one side (the right side in the example shown in Figure 9) from the inner surface 11Bb in the horizontal direction by the second predetermined dimension (e.g., 10 to 20 mm, etc.).

[0078] Further, the first plate material 11B has a second plate material connecting portion 113 formed on an outer surface 11Ba for connecting the second plate material 12B. The second plate material connecting portion 113 is formed in a groove shape extending in a predetermined direction (left-right direction in the example shown in FIG. 9), and a plurality of second plate material connecting portions 113 are arranged at predetermined intervals in a direction perpendicular to the predetermined direction. The second plate material connecting portion 113 may extend not only in the left-right direction but also in the up-down direction, and may be formed in a convex shape instead of a groove shape.

[0079] FIG. 10 is a perspective view of a second plate material according to a modified example of the embodiment of the present invention. The second plate material 12B is connected to the outer surface 11Ba (see FIG. 9) of the first plate material 11B. In the examples shown in FIG. 8 and FIG. 10, the second plate material 12B is formed to have the same shape and dimensions as the outer surface 11Ba when viewed from the surface direction, but is not limited thereto and may be formed to any shape and dimensions as long as it can be connected to the first plate material 11B.

[0080] Also, the second plate 12B has a first plate connecting portion 123 formed on its inner surface for connecting to the first plate 11B. The first plate connecting portion 123 is formed in a groove shape extending in a predetermined direction (left-right direction in the example shown in FIG. 10), and a plurality of first plate connecting portions 123 are arranged at predetermined intervals in a direction perpendicular to the predetermined direction. The first plate connecting portion 123 may extend not only in the left-right direction but also in the up-down direction, and may be formed in a convex shape instead of a groove shape.

[0081] The first plate material 11B and the second plate material 12B are connected to each other by a connecting member 13. The connecting member 13 is a shaft member having a rectangular cross section, and both side edges in a direction perpendicular to the extension direction of the shaft member engage with the second plate connecting portion 113 of the first plate material 11B and the first plate connecting portion 123 of the second plate material 12B, respectively.

[0082] For example, one of the second plate material connecting portion 113 and the first plate material connecting portion 123 may be formed in a convex shape and the other in a concave shape so as to engage with each other, and the connecting member 13 may be omitted.

[0083] The fixing member 40 according to the modified example is disposed between a pair of surface members 10B (first plate material 11B). The fixing member 40 includes a cross member 40A formed by combining a first member and a second member, which are plate materials having surfaces extending in the vertical direction, so as to cross each other, and a pair of orthogonal members 40B, which are disposed to sandwich the cross member 40A and are formed of plate materials having surfaces extending in the vertical direction and perpendicular to the inner surface of the first plate material 11B. In this way, by disposing the cross member 40A between the pair of orthogonal members 40B and connecting the pair of surface members 10B, the rigidity of the assembly block 1B can be improved.

[0084] With such assembled blocks 1, 1A, 1B, by forming a cavity between a pair of surface members 10, 10A, 10B that form a surface, the weight of each block can be reduced compared to when a core member is provided between the pair of surface members 10, 10A, 10B. Therefore, it is possible to reduce the weight of each block, improving transportability and workability when assembling the blocks.

[0085] Furthermore, by forming a cavity between a pair of surface members 10, 10A, 10B that form a surface, any material (e.g., sand, concrete, pipes, electrical wires, etc.) can be placed between the pair of surface members 10, 10A, 10B, making it possible to combine multiple construction blocks to construct structures for a variety of uses.

[0086] In addition, according to the assembly blocks 1, 1A, the fixing members 20, 30 penetrate the first plate members 11, 11A of the pair of surface members 10, 10A, respectively, and have ends connected to the second plate members 12, 12A of the pair of surface members 10, 10A, respectively. As a result, for example, when the second plate material 12, 12A arranged on the outside becomes dirty or damaged, it is possible to replace only the second plate material 12, 12A while maintaining the shape of the assembly block 1, 1A.

[0087] Furthermore, in the assembly block 1B, the fixing members 40 connect the first plate members 11B of the pair of surface members 10B, and the second plate member 12B is detachably fixed to the first plate member 11B. As a result, for example, when the second plate material 12B arranged on the outside becomes dirty or damaged, it is possible to replace only the second plate material 12B while maintaining the shape of the assembly block 1B.

[0088] Although the embodiments, alternative examples, and modified examples of the present invention have been described above, it goes without saying that the technical scope of the present invention is not limited to the contents of the above-mentioned embodiments and application examples. It is clear to those skilled in the art that various modifications or improvements can be made to the above-mentioned embodiments and modifications. Furthermore, it is clear from the claims that such modifications or improvements are also included in the technical scope of the present invention. Moreover, the embodiments, alternative examples, and modified examples can be partially combined as long as there is no contradiction.

[0089] For example, in the above description, the first plate material 11 and the second plate material 12 of the surface member 10 in the embodiment and the first plate material 11A and the second plate material 12A of the surface member 10A in the modified example are each formed from a single plate material. However, this is not limited to the above, and each of the first plate material 11, the second plate material 12, the first plate material 11A, and the second plate material 12A (hereinafter also referred to as "the first plate material 11, etc.") may be formed into a single member by connecting multiple plate materials.

[0090] Small diameter trees are found in large numbers in Japan's artificial forests that were planted after the war, but at present it is difficult to use them as building materials, which is causing a decline in the profitability of Japan's forestry industry. Therefore, boards of the maximum width that can be cut from small diameter trees that are not currently being used may be joined, for example, vertically to form the first board 11 or the like of the desired dimensions. This will make it possible to profitably utilize small-diameter trees, which currently have almost no value, improving the profits that can be generated from forests, leading to thorough forest resource circulation and management through logging and reforestation, preventing landslides in forests, and contributing to disaster prevention against landslides. [Explanation of symbols]

[0091] 1,1A,1B Assembly block 10,10A,10B surface member 11,11A,11B 1st plate material 11Ba External surface 11Bb Inside 12,12A,12B 2nd plate material 13 Connecting members 20, 30, 40 Fixing member 21 Spacing holding part 22 Engagement part 31 First member 32 Second member 40A Cross member 40B Cross member 100 Concrete Block 111 Through hole 111A Through hole 111B Engagement groove 112 Steps 113 2nd plate connection part 121,121A Groove 123 1st plate connection section 200 Wall 310 Spacing holding part 310a Notch 310b Engagement protrusion 311 First engagement part 312 Second engagement part

Claims

1. A composite block for forming a predetermined shape by combining a plurality of the components, A surface member that forms a surface; A fixing member extending in a direction perpendicular to the surface of the plane member and connecting the pair of plane members facing each other, The surface member is A first plate material disposed on the inside and a second plate material disposed on the outside are overlapped, A step is formed on the side edge of the surface member, A cavity is formed between the pair of surface members, A assembly block capable of engaging with another assembly block at the step.

2. The assembly block according to claim 1 , wherein the fixing members each penetrate the first plate members of the pair of surface members and each have an end connected to the second plate members of the pair of surface members.

3. the fixing member connects the first plate members of the pair of surface members, 2. The assembly block according to claim 1, wherein the second plate is detachably fixed to the first plate.

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