Woody unit and woody frame

Abstract

To achieve a strong and beautiful structure while suppressing cost by joining timbers to each other without using a special joint metal.SOLUTION: In the woody unit 6, a plurality of pieces of wood 61 are annularly arranged to form each side of a polygon to form basic structures 60A and 60B, and are combined to form a plane as a whole, and in each of the basic structures, one piece of wood 616 is divided into a first member J6 and a second member 616A across two pieces of wood 615 in one intersection 616B where the pieces of wood intersect with each other. The one wood piece and the other wood piece are joined to each other by embedding the end portions of the wire connectors 65 provided in the through holes 64 of the two wood pieces 615 and in the first member and the second member, and in the other intersection portions J1 to J5, the one wood piece located on the first side in the circumferential direction Dc of the polygon forming the basic structure is overlapped with the other wood piece so as to be located on the same side in the direction orthogonal to the plane, thereby performing half-lap joint.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a wooden unit formed by intersecting a plurality of long pieces of wood with each other, and to a wooden frame using the wooden unit. [Background technology]

[0002] The roof and floor of a building may be made of wooden units constructed from pieces of wood. For example, Patent Document 1 describes a cross frame formed into a box shape by combining multiple wooden pillars and multiple wooden beams, with the joints between the pillars and beams and the joints diagonally opposite the joints connected by diagonal braces. The diagonal braces are attached to mounting members interposed between the pillars and beams at the joints of the cross frame. The mounting members are composed of a main body made of a tubular member with a rectangular cross section and blade members, which are substantially trapezoidal plates fixed to one end of the main body. Furthermore, at the joints of the cross frame, the pillars and beams are joined by metal joints embedded throughout the interiors of both the pillars and beams. By using a cross member made of wood, as in Patent Document 1, it is possible to realize a structure with a beautiful appearance, with a wood-like appearance. However, when trying to realize a complex structure, for example, in order to enhance the aesthetics, it is often necessary to use special metal joints, such as those described as mounting members and metal joints in Patent Document 1, to join the pieces of wood together. The use of such special metal joints increases costs.

[0003] Regarding joining of wooden pieces, Patent Document 2 describes a structure that includes component members arranged in parallel at a required interval and a plurality of diagonal members provided between the component members, and adjacent diagonal members and component members are joined by a joining means. The joining means includes a base portion provided on the component member and a shaft portion provided on both ends of the base portion so as to be aligned with the axial direction of the adjacent diagonal members. Patent document 3 also describes a wooden truss in which bowl washers are embedded inside the joints of the wooden frame where several diagonal members and components are gathered, nuts are embedded in each diagonal member, and axle bolts fixed to or passing through the bowl washers are tightened with nuts to fasten the components and diagonal members together. In Patent Documents 2 and 3, special metal fittings are also required to join pieces of wood together. Therefore, even when joining pieces of wood together in the manners described in Patent Documents 2 and 3, costs may increase. It is desirable to realize a strong and aesthetically pleasing structure while keeping costs down by joining pieces of wood together without using special metal joints. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-284918 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-183426 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-88975 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem that the present invention aims to solve is to provide a wooden unit and wooden frame that can realize a strong and beautiful structure while reducing costs by joining pieces of wood together without using special metal joints. [Means for solving the problem]

[0006] The inventors came up with the present invention by noting that by forming a wooden unit by crossing multiple long pieces of wooden material with each other and connecting the pieces of wood with half joints or wooden plug joints, it is possible to realize a strong and beautiful wooden structure by connecting the pieces of wood without any special connecting metal fittings appearing on the surface of the wooden unit. In order to solve the above problems, the present invention employs the following means. In other words, the wood unit of the present invention is a wood unit formed by crossing a plurality of long pieces of wood with each other, and a basic structure is formed by arranging a plurality of the pieces of wood in a ring shape so that each piece forms one side of a polygon, and the plurality of basic structures are combined to form a flat surface as a whole, and in each of the plurality of basic structures, at at least one of the plurality of intersections where the pieces of wood cross each other, the first piece of wood is divided into a first member and a second member with the second piece of wood sandwiched between them, and the ends of the linear connecting material provided in the through holes of the second piece of wood are embedded in the first member and the second member, thereby joining the first piece of wood and the second piece of wood to each other, and at other of the plurality of intersections, one piece of wood located on a first side in the circumferential direction of the polygon forming the basic structure is overlapped with the other piece of wood so that it is located on the same side in a direction perpendicular to the plane, and is joined by a half-timber joint. According to the above-described configuration, a basic structure is formed by arranging a plurality of long wooden pieces in a ring shape, each forming one side of a polygon. The plurality of basic structures are then combined to form a plane, thereby forming a wooden unit. In each basic structure, the wooden pieces are joined at their intersections, with a half-lap joint, so that the wooden piece located on a first side in the circumferential direction of the polygon forming the basic structure is located on the same side of the other wooden piece in a direction perpendicular to the plane. Therefore, for example, if the wooden units are arranged horizontally so that the same side is the lower side, and a certain wooden piece is used as a starting point, the wooden piece located on the first side in the circumferential direction is located below the other wooden piece at the intersection, and the half-lap joint is formed so that the starting wooden piece is located on the upper side. Therefore, the starting wooden piece is supported from below by the wooden piece located on the first side. Similarly, the wood piece further to the first side in the circumferential direction than the wood piece located on the first side is located below the intersection, and the wood piece located on the first side of the starting wood piece is located above. Therefore, the wood piece located on the first side of the starting wood piece (the other wood piece), which supports the starting wood piece, is supported from below by the wood piece located further to the first side of the starting wood piece (one wood piece). In the basic structure, as described above, multiple wood pieces are arranged in a ring shape, each forming one side of a polygon. Therefore, once each piece is supported by the wood piece located on the first side as described above, the starting wood piece will eventually become the wood piece located on the first side, and the final piece, i.e., the wood piece located on the second side opposite the first side of the starting wood piece, will be supported by the starting wood piece. In this way, adjacent wood pieces support and are supported by each other, allowing for a rational and strong joining of wood pieces. Here, when constructing the basic structure described above, if the wood pieces are joined sequentially in a circumferential direction from the starting wood to the first side, the last piece to be joined must be joined simultaneously to both the starting wood and the wood piece joined one piece earlier to form a circular polygon. However, the two notches required for the joint are located on different sides of the wood piece in a direction perpendicular to the plane. For example, even if the wood piece to be joined last is moved perpendicular to the plane to join it to the previous piece, the notch for joining the last piece to the starting wood is located on the opposite side of the movement direction, so the last piece will not be joined to the starting wood. Thus, it is not easy to join the last piece to both the starting wood and the previous piece. Here, for example, at the intersection where the final pieces of wood are joined, if the piece of wood to be joined is the first piece of wood and the adjacent piece of wood that serves as the starting point is the second piece of wood, then between these first and second pieces of wood, the first piece of wood is divided into a first member and a second member with the second piece of wood in between, and the end of the linear connecting material provided in the through hole of the second piece of wood is embedded in the first and second members, then when positioning the first piece of wood, for example, one end of the first member can be joined to the piece of wood joined previously with the other end abutting the side of the second piece of wood, and the second member can be positioned on the opposite side of the first member with the second piece of wood in between, and the linear connecting material can be inserted between them, thereby easily joining the first piece of wood and the second piece of wood. In order to realize the above-mentioned structure, the only material required to join the wooden pieces is the linear connector, and no other metal joints are particularly required. Therefore, the cost of realizing the wooden unit is kept low. Furthermore, the wooden unit as described above is formed entirely from wood, allowing the entire surface to be exposed to wood. In particular, as described above, no special metal joints are required to join the pieces of wood together, which reduces the exposure of metal parts on the surface of the wooden unit. Furthermore, the wooden unit is constructed by combining basic structures formed as polygonal shapes, which allows the expression of patterns with a geometric aesthetic. In this way, the aesthetic appearance of the wooden unit can be improved. As described above, by joining pieces of wood together without using special metal joints, it is possible to keep costs down while achieving a strong and aesthetically pleasing structure.

[0007] Furthermore, the wood unit of the present invention is a wood unit formed by crossing a plurality of long pieces of wood with each other, and a basic structure is formed by arranging a plurality of the pieces of wood in a ring shape so that each piece forms one side of a polygon, and the plurality of basic structures are combined to form a plane as a whole, and in each of the plurality of basic structures, at at least one of the plurality of intersections where the pieces of wood cross each other, the end face of one piece of wood abuts against the side face of the second piece of wood, and the end of the linear connecting material provided in the through hole of the second piece of wood is embedded in the first piece of wood, thereby joining the first piece of wood and the second piece of wood to each other, and at other of the plurality of intersections, one piece of wood located on a first side in the circumferential direction of the polygon forming the basic structure is overlapped with the other piece of wood so that it is located on the same side in a direction perpendicular to the plane, and is joined by a half-timber joint. According to the above-described configuration, a basic structure is formed by arranging multiple long pieces of wood in a ring shape, each forming one side of a polygon, and the multiple basic structures are combined to form a plane as a whole, thereby forming a wood unit. Here, in each basic structure, the pieces of wood are joined at their intersections so that the piece of wood located on a first side in the circumferential direction of the polygon forming the basic structure is located on the same side in a direction perpendicular to the plane as the other piece of wood, forming a half-timber joint. Therefore, as already explained, adjacent pieces of wood support each other, allowing the pieces of wood to be joined together rationally and firmly. Here, when constructing a basic structure, as described above, a half-lap joint is performed sequentially from the starting wood toward the first side in the circumferential direction. The last wood to be joined must be simultaneously joined to both the starting wood and the previously joined wood to form a circular polygon. However, the two notches required for half-lap joints in each wood are located on different sides of the wood in a direction perpendicular to the plane. For example, even if a wood to be joined last is moved perpendicular to the plane to join it to the previously joined wood, the notch for joining the last wood to the starting wood is located on the opposite side of the movement direction, so the last wood will not be joined to the starting wood. Thus, it is not easy to half-lap joint the last wood to both the starting wood and the previously joined wood. Here, for example, at the intersection where the final pieces of wood are joined, if the piece of wood to be joined is called the first piece of wood and the adjacent piece of wood that serves as the starting point is called the second piece of wood, then between these first and second pieces of wood, the end face of the first piece of wood is abutted against the second piece of wood and the end of the linear connecting material provided in the through hole of the second piece of wood is embedded in the first piece of wood.In this case, when arranging the first piece of wood, for example, one end of the first piece of wood can be joined to the piece of wood that was joined previously with a half-joint and the other end can be abutted against the side of the second piece of wood, and the linear connecting material can be inserted between them, thereby easily joining the first piece of wood and the second piece of wood. In order to realize the above-mentioned structure, the only material required to join the wooden pieces is the linear connector, and no other metal joints are particularly required. Therefore, the cost of realizing the wooden unit is kept low. Furthermore, the wooden unit as described above is formed entirely from wood, allowing the entire surface to be exposed to wood. In particular, as described above, no special metal joints are required to join the pieces of wood together, which reduces the exposure of metal parts on the surface of the wooden unit. Furthermore, the wooden unit is constructed by combining basic structures formed as polygonal shapes, which allows the expression of patterns with a geometric aesthetic. In this way, the aesthetic appearance of the wooden unit can be improved. As described above, by joining pieces of wood together without using special metal joints, it is possible to keep costs down while achieving a strong and aesthetically pleasing structure.

[0008] In one aspect of the present invention, the wood pieces forming the polygons of one of the basic structures simultaneously form the polygons of another of the basic structures. According to this configuration, the wood that forms the polygon of one basic structure simultaneously forms the polygon of another basic structure, so that a wooden unit in which a plurality of basic structures are combined can be efficiently formed with less wood.

[0009] The wooden structure of the present invention is a wooden structure using wooden units as described above, and is characterized by comprising a support material extending laterally, the wooden unit extending laterally below the support material, and a hanging hardware for suspending and supporting the wooden unit relative to the support material. According to this configuration, by placing the above-mentioned wooden units below the support material, it is possible to provide a wooden frame equipped with wooden units that is strong and has an aesthetically pleasing structure while keeping costs down. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide wooden units and wooden frames that can realize strong and beautiful structures while reducing costs by joining pieces of wood together without using special metal joints. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram showing the configuration of a structure equipped with a wooden framework according to an embodiment of the present invention. [Figure 2] 2 is a plan view showing an upper timber and a middle timber provided in the wooden frame of FIG. 1. FIG. [Figure 3] FIG. 2 is a plan view showing a wooden unit provided in the wooden frame of FIG. 1. [Figure 4] FIG. 4 is a plan view showing a part of the wood unit of FIG. 3. [Figure 5] 5 is a perspective development view showing a combination of wood materials in a part of the wooden unit of FIG. 4. FIG. [Figure 6] 5 is a plan view showing one of the joints of the wooden pieces that make up the wooden unit of FIG. 4. FIG. [Figure 7] FIG. 5 is a plan view showing a part of the wood unit of FIG. 4. [Figure 8] FIG. 1 is a cross-sectional view showing a connecting hardware used in a wooden frame. [Figure 9] This is a view of a hanging hardware used in a wooden frame, viewed from a first horizontal direction. [Figure 10] This is a view of a hanging hardware used in a wooden frame, viewed from a second horizontal direction. [Figure 11] FIG. 10 is an enlarged view of the connecting portion provided at the top of the hanging hardware in FIG. [Figure 12] FIG. 10 is an enlarged view of the connecting portion provided at the bottom of the hanging hardware in FIG. [Figure 13] FIG. 10 is a plan view showing one of the joints of the wood according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention provides a closed reciprocal wooden unit, which is made by crossing multiple long wooden pieces and connecting them with half-edge joints or wooden plug joints to form a ring-shaped structure ranging from a triangle to a hexagon.Furthermore, the present invention also includes other forms of wooden frames constructed using the wooden units. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out a wooden unit and a wooden frame according to the present invention will be described with reference to the accompanying drawings. FIG. 1 shows the configuration of a structure equipped with a wooden frame according to an embodiment of the present invention. As shown in Fig. 1, the structure 1 includes a plurality of pillars 2, a roof 3, and a wooden frame 5. The structure 1 has, for example, a rectangular shape in plan view. The shape of the structure 1 in plan view may be other shapes, such as a polygonal shape other than a rectangle. The multiple pillars 2 are provided, for example, at the four corners of the structure 1. The multiple pillars 2 are provided at predetermined intervals in a first horizontal direction D1 (the left-right direction on the paper in FIG. 1) and in a second horizontal direction D2 (a direction perpendicular to the paper in FIG. 1) perpendicular to the first horizontal direction D1. Each pillar 2 extends upward from a base G.

[0013] The roof portion 3 is provided on a plurality of pillars 2. In this embodiment, the roof portion 3 is provided so as to slope diagonally downward from one side (the right side in FIG. 1) to the other side (the left side in FIG. 1) in the horizontal first direction D1. Therefore, the pillar 2R located on one side (the right side in FIG. 1) in the horizontal first direction D1 is longer in the vertical direction Dv than the pillar 2L located on the other side (the left side in FIG. 1) in the horizontal first direction D1. The roof section 3 includes a plurality of beams 31 installed between a plurality of columns 2 and roofing materials 32 provided on the beams 31. The beams 31 are provided at intervals in a horizontal second direction D2 (a direction perpendicular to the plane of the paper in FIG. 1 ) perpendicular to the horizontal first direction D1. Each beam 31 is made of a steel frame, steel pipes, wood, or the like, and extends in the horizontal first direction D1 when viewed from above. Each beam 31 extends obliquely downward from one side to the other side of the horizontal first direction D1. Each beam 31 is installed between an end beam (not shown) provided between a plurality of columns 2R and extending in the horizontal second direction D2, and another end beam (not shown) provided between a plurality of columns 2L and extending in the horizontal second direction D2. The roof material 32 is provided on a plurality of beams 31. The roof material 32 is formed so as to extend along an inclined surface that slopes obliquely downward from one side to the other side in the first horizontal direction D1. Here, the material and specific configuration of the roof material 32 are not of any importance.

[0014] The wooden frame 5 is provided below the roof material 32. The wooden frame 5 includes a plurality of support members 51, a sheet-like body 8, and a hanging hardware 10 that suspends and supports the sheet-like body 8 from the support members 51. The plurality of support members 51 are supported by the plurality of beams 31. For example, the plurality of support members 51 are provided on the plurality of beams 31. The plurality of support members 51 are provided at intervals in the horizontal first direction D1. Each support member 51 extends in the horizontal second direction D2 (lateral direction). Each support member 51 is fixed to the upper surface of a beam 31 that extends obliquely downward from one side to the other side in the horizontal first direction D1. Therefore, as shown in FIG. 1 and FIG. 10, which will be described later, when viewed from the horizontal second direction D2, each support member 51 is provided at an incline in the width direction of the support member 51 following the upper surface of the beam 31.

[0015] FIG. 2 is a plan view showing the upper and middle timbers provided in the wooden frame of FIG. The planar body 8 includes an upper wooden piece 81, a middle wooden piece 82, and a wood unit 6. The upper wooden piece 81, the middle wooden piece 82, and the wood unit 6 are stacked in this order from top to bottom and joined together. 2, for example, five upper timbers 81 are provided. The five upper timbers 81 are arranged parallel to one another when viewed from above. When viewed from above, each upper timber 81 extends from one side to the other in the horizontal first direction D1, slanting toward one side in the horizontal second direction D2. The middle timbers 82 are provided below the upper timbers 81. For example, five middle timbers 82 are provided. Each of the five middle timbers 82 is provided parallel to one another when viewed from above. Each middle timber 82 extends from one side to the other in the horizontal first direction D1, and at an angle toward the other side in the horizontal second direction D2. These multiple upper timbers 81 and middle timbers 82 are provided intersecting each other so that two adjacent upper timbers 81 and two adjacent middle timbers 82 form a parallelogram when viewed from above.

[0016] As shown in FIG. 1, the wood units 6 are provided below the support material 51, extending laterally. The wood units 6 are provided below a plurality of middle timbers 82. The wood units 6 are formed so as to extend along a plane parallel to the roof material 32. More specifically, the wood units 6 are formed so as to extend along an inclined plane that intersects the up-down direction Dv and slopes diagonally downward from one side (the right side in FIG. 1) to the other side (the left side in FIG. 1) in the first horizontal direction D1. FIG. 3 is a plan view showing a wooden unit provided in the wooden frame of FIG. As shown in FIG. 3, the wooden unit 6 is formed by intersecting a plurality of long wooden pieces 61. The wooden unit 6 has polygonal basic structures 60A and 60B. In this embodiment, the wooden unit 6 includes, for example, a hexagonal basic structure 60A and a triangular basic structure 60B. More specifically, the wooden unit 6 shown in FIG. 3 has four hexagonal basic structures 60A (60A1, 60A2, 60A3, 60A4). The wooden unit 6 also has a total of six triangular basic structures 60B at the vertices of each of the four basic structures 60A. The plurality of basic structures 60A and 60B are combined to form a plane as a whole. The basic structures 60A and 60B are formed by arranging a plurality of wooden pieces 61 in a ring shape so that each of the wooden pieces 61 forms one side of a polygon.

[0017] Fig. 4 is a plan view showing a part of the wooden unit of Fig. 3. Fig. 5 is a perspective development view showing the combination of wood in a part of the wooden unit of Fig. 4. Fig. 4 is a view looking down on the wooden unit from above, while Fig. 5 is a view looking up at the wooden unit from diagonally below. 4, each of the hexagonal basic structures 60A has six wooden pieces 61 (wood pieces 611 to 616) arranged in a ring shape to form each side of a polygon (hexagon). When viewed from above, the six wooden pieces 61 are oriented such that their extension directions differ by 60° in the circumferential direction Dc of the basic structure 60A.

[0018] As shown in Figures 4 and 5, of the six wooden pieces 611 to 616 that make up each basic structure 60A, four wooden pieces 611 to 614 each have a lower groove 62 and an upper groove 63 spaced apart in the extension direction. The lower groove 62 and the upper groove 63 are notches used when joining the wooden pieces 611 to 616. The lower groove 62 and the upper groove 63 are provided in the wooden pieces 611 to 616 at the portions where the wooden pieces 611 to 616 intersect with other wooden pieces 61 that form the basic structure 60A. The lower grooves 62 are formed on the first end 61a side located on the counterclockwise side in the circumferential direction Dc of the basic structure 60A in the extension direction of the wooden pieces 611 to 614. The lower grooves 62 are formed so as to be recessed upward from the lower surfaces of the wooden pieces 611 to 614. The lower grooves 62 are formed so as to be inclined with respect to the extension direction of the wooden pieces 611 to 614 and to be open on both sides in the width direction of the wooden pieces 611 to 614. The upper grooves 63 are formed on the opposite side of the lower grooves 62 from the first ends 61a in the extension direction of the wooden pieces 611-614, i.e., on the second ends 61b side located on the clockwise side in the circumferential direction Dc of the basic structure 60A. The upper grooves 63 are formed so as to be recessed downward from the top surfaces of the wooden pieces 611-614. The upper grooves 63 are formed so as to be inclined in the opposite direction to the lower grooves 62 with respect to the extension direction of the wooden pieces 611-614, and to be open on both sides in the width direction of the wooden pieces 611-614.

[0019] 4, of the six wooden pieces 611-616 that make up each basic structure 60A, one wooden piece 615 has a lower groove 62 at a first end 615a located on the counterclockwise side in the circumferential direction Dc of the basic structure 60A in its extension direction. The lower groove 62 is formed so as to be recessed upward from the lower surface of the wooden piece 615. The lower groove 62 is formed so as to be inclined with respect to the extension direction of the wooden piece 615 and open to both sides in the width direction of the wooden piece 615. The wooden piece 615 has a through hole 64 at a second end 615b located on the clockwise side in the circumferential direction Dc of the basic structure 60A in its extension direction. The through hole 64 is formed so as to be inclined with respect to the extension direction of the wooden piece 615 and open to both sides in the width direction of the wooden piece 615.

[0020] FIG. 6 is a plan view showing one of the joints of the wooden pieces that make up the wooden unit of FIG. 4 and 6, of the six wooden pieces 611-616 that make up each basic structure 60A, the remaining wooden piece 616 is divided into a first member 616A and a second member 616B at a first end 616a located on the counterclockwise side in the circumferential direction Dc of the basic structure 60A in the extension direction. As shown in Fig. 6, the first member 616A and the second member 616B have end faces 616s, 616t that are inclined with respect to the extension direction of the wooden piece 616. 4, the first member 616A of the wooden piece 616 has an upper groove 63 on the second end 616b side, which is located on the clockwise side in the circumferential direction Dc of the basic structure 60A in the extension direction of the wooden pieces 611 to 614. The upper groove 63 is formed so as to be recessed downward from the upper surface of the first member 616A. The upper groove 63 is formed so as to be inclined with respect to the extension direction of the first member 616A and to be open on both sides in the width direction of the first member 616A.

[0021] Each basic structure 60A has multiple (six) intersections J1 to J6 where adjacent wooden pieces 61 intersect in the circumferential direction Dc of the basic structure 60A. At one intersection J6 of the six intersections J1 to J6 of the basic structure 60A, a first wooden piece 616 and a second wooden piece 615 are joined with a plug, as shown in FIGS. 4 and 6 . Specifically, a first member 616A and a second member 616B constituting the first wooden piece 616 are arranged to sandwich the second wooden piece 615. In this state, a linear connecting member 65 extends along the extension direction of the first wooden piece 616 and passes through a through-hole 64 of the second wooden piece 615. Ends 65s, 65t of the linear connecting member 65 are embedded in the first member 616A and the second member 616B. For example, a plurality of linear connecting members 65 are arranged in parallel. One end 65s of each linear connecting member 65 is embedded in the first member 616A and protrudes from an end face 616s of the first member 616A in the extension direction of the first member 616A. Each linear connecting member 65 passes through a through-hole 64 formed in the second wooden piece 615 and is embedded in the second member 616B from an end face 616t of the second member 616B. In the present embodiment, one linear connecting member 65 is inserted into each through hole 64, but instead, multiple linear connecting members 65 may be provided in one through hole 64. That is, the linear connecting members 65 may be formed to have a shorter length in the axial direction, and multiple (for example, two) linear connecting members 65 may be provided in one through hole 64 so as to be continuous with each other in the axial direction, thereby joining the first wooden piece 616 and the second wooden piece 615.

[0022] As shown in Figure 4, of the six intersections J1 to J6 of the basic structure 60A, at the intersections J1 to J5 other than the intersection J6 which is joined with a wooden plug, one piece of wood 61 located on a first side in the circumferential direction Dc (in this embodiment, the counterclockwise side in the circumferential direction Dc of the basic structure 60A) is overlapped with the other piece of wood 61 located on a second side opposite the first side in the circumferential direction Dc (in this embodiment, the clockwise side in the circumferential direction Dc of the basic structure 60A) so as to be located on the same side (in this embodiment, the lower side) in a direction perpendicular to the plane, and joined by a half-timber joint. Specifically, at the intersection J1, one piece of wood 616 located on a first side in the circumferential direction Dc is overlapped with the other piece of wood 611 located on a second side in the circumferential direction Dc so as to be positioned below the other piece of wood 611. At the intersection J1, the upper groove 63 of one piece of wood 616 fits into the lower groove 62 of the other piece of wood 611, thereby forming a half-jointed joint between the one piece of wood 616 and the other piece of wood 611. At the intersection J2, one piece of wood 611 located on a first side in the circumferential direction Dc is overlapped with the other piece of wood 612 located on a second side in the circumferential direction Dc so as to be located below the other piece of wood 612. At the intersection J2, the upper groove 63 of one piece of wood 611 fits into the lower groove 62 of the other piece of wood 612, thereby forming a half-jointed joint between the one piece of wood 611 and the other piece of wood 612. At the intersection J3, one piece of wood 612 located on a first side in the circumferential direction Dc is overlapped with the other piece of wood 613 located on a second side in the circumferential direction Dc so as to be positioned below the other piece of wood 613. At the intersection J3, the upper groove 63 of one piece of wood 612 fits into the lower groove 62 of the other piece of wood 613, thereby forming a half-jointed joint between the one piece of wood 612 and the other piece of wood 613. At the intersection J4, one piece of wood 613 located on a first side in the circumferential direction Dc is overlapped with the other piece of wood 614 located on a second side in the circumferential direction Dc so as to be positioned below the other piece of wood 614. At the intersection J4, the upper groove 63 of one piece of wood 613 fits into the lower groove 62 of the other piece of wood 614, thereby forming a half-jointed joint between the one piece of wood 613 and the other piece of wood 614. At the intersection J5, one piece of wood 614 located on a first side in the circumferential direction Dc is overlapped with the other piece of wood 615 located on a second side in the circumferential direction Dc so as to be located below the other piece of wood 615. At the intersection J5, the upper groove 63 of one piece of wood 614 and the lower groove 62 of the other piece of wood 615 fit together, thereby forming a half-jointed joint between the one piece of wood 614 and the other piece of wood 615.

[0023] The basic structure 60A as described above can be constructed, for example, as follows. First, the upper groove 63 of the wooden piece 611 and the lower groove 62 of the wooden piece 612 are fitted together to form a half-jointed joint, thereby forming the intersection J2. Next, the upper groove 63 of the wooden piece 612 is fitted into the lower groove 62 of the wooden piece 613 to form a half-edge joint, thereby forming the intersection J3. Next, the upper groove 63 of the wooden piece 613 and the lower groove 62 of the wooden piece 614 are fitted together to form a half-jointed joint, thereby forming an intersection J4. Then, the upper groove 63 of the wooden piece 614 and the lower groove 62 of the wooden piece 615 are fitted together to form a half-jointed joint, thereby forming an intersection J5. Furthermore, the upper groove 63 of the first member 616A constituting the wooden piece 616 is fitted into the lower groove 62 of the wooden piece 611 to form a half-edge joint, thereby forming the intersection J1. At this time, the end surface 616s of the first member 616A is brought into contact with the side surface of the wooden piece 615. Then, the end 65s of the linear connecting member 65 is embedded in the first member 616A through the through hole 64 formed in the wooden piece 615, and the second member 616B constituting the wooden piece 616 is placed over the end 65t of the linear connecting member 65 protruding from the side of the wooden piece 615 so as to embed the end 65t.

[0024] Next, the triangular basic structure 60B will be described. Fig. 7 is a plan view showing a part of the wood unit of Fig. 4. Fig. 7 shows an enlarged view of the basic structure 60B1 shown in the lower left of the multiple basic structures 60B shown in Fig. 4. Each triangular basic structure 60B is formed by three pieces of wood 66 among the pieces of wood 61 that make up the wood unit 6, which are arranged in a ring shape to form each side of a polygon (triangle). When viewed from above, the three pieces of wood 66 are oriented so that their extension directions differ by 120° in the circumferential direction Ds of the basic structure 60B. The basic structures 60B are provided at positions that include six intersections J1 to J6 of the hexagonal basic structure 60A. In other words, six basic structures 60B are provided in each hexagonal basic structure 60A. As shown in FIG. 7, of the three pieces of wood 661 to 663 that make up each basic structure 60B, two pieces of wood 661 and 662 simultaneously form the polygon of another basic structure 60A. The basic structure 60B will be described below using the basic structure 60B1 shown in FIG. 7 as an example, but the same description can be applied to other basic structures 60B.

[0025] The wooden piece 661 that constitutes the basic structure 60B1 is the portion of the wooden piece 613 in the basic structure 60A on the first end 61a side. An upper groove 67 is formed on the counterclockwise side in the circumferential direction Ds of the basic structure 60B relative to the lower groove 62 used to join the wooden piece 661 (i.e., the wooden piece 613) to the wooden piece 612 in the extension direction of the wooden piece 661 (i.e., the wooden piece 613). The upper groove 67 is formed so as to be recessed downward from the upper surface of the wooden piece 661. The upper groove 67 is formed so as to be inclined with respect to the extension direction of the wooden piece 661 and to open on both sides in the width direction of the wooden piece 661. The wooden piece 662 that constitutes the basic structure 60B1 is the portion of the wooden piece 612 in the basic structure 60A on the second end 61b side. The wooden piece 662 is divided into a first member 662A and a second member 662B. The remaining piece of wood 663 that constitutes the basic structure 60B1 has a lower groove 68. The lower groove 68 is formed so as to be recessed upward from the lower surface of the wood 663. The lower groove 68 is formed so as to be inclined with respect to the extension direction of the wood 663 and to open on both sides in the width direction of the wood 663. The wooden piece 663 has a through hole 69 on the counterclockwise side in the circumferential direction Ds of the basic structure 60B, in the extension direction of the lower groove 68. The through hole 69 is formed so as to be inclined with respect to the extension direction of the wooden piece 663 and open to both sides in the width direction of the wooden piece 663.

[0026] The basic structure 60B1 has multiple (three) intersections J7 to J9 where adjacent wooden pieces 66 intersect in the circumferential direction Ds of the basic structure 60B1. Of the three intersections J7 to J9 of the basic structure 60B1, one intersection J7 is the intersection J3 in the hexagonal basic structure 60A, and is overlapped with and half-jointed to one wooden piece 662 located on a first side in the circumferential direction Ds (in this embodiment, the clockwise side in the circumferential direction Ds of the basic structure 60B1), and the other wooden piece 662 located on a second side opposite the first side in the circumferential direction Ds (in this embodiment, the counterclockwise side in the circumferential direction Ds of the basic structure 60B1), so as to be located on the same side (in this embodiment, the lower side) in a direction perpendicular to the plane. At the intersection J8, similarly to the intersection J7, one piece of wood 661 located on a first side in the circumferential direction Ds is overlapped with the other piece of wood 663 so as to be located on the same side (below) in a direction perpendicular to the plane, thereby forming a half-lap joint. Specifically, at the intersection J8, one piece of wood 661 located on the first side in the circumferential direction Ds is overlapped with the other piece of wood 663 located on a second side in the circumferential direction Ds so as to be located below. At the intersection J8, the upper groove 67 of one piece of wood 661 fits into the lower groove 68 of the other piece of wood 663, thereby forming a half-lap joint between the one piece of wood 661 and the other piece of wood 663. At the intersection J9, the first wooden piece 662 and the second wooden piece 663 are joined with a wooden plug. Specifically, with the second wooden piece 663 sandwiched between the first member 662A and the second member 662B that make up the first wooden piece 662, an end of a linear connecting member 65 that is provided to pass through the through-hole 69 of the second wooden piece 663 is embedded in the first member 662A and the second member 662B. In the present embodiment, one linear connecting member 65 is inserted into each through hole 69, but instead, multiple linear connecting members 65 may be provided in one through hole 69. That is, the linear connecting members 65 may be formed to have a shorter length in the axial direction, and multiple (for example, two) linear connecting members 65 may be provided in one through hole 69 so as to be continuous with each other in the axial direction, thereby joining the first wooden piece 662 and the second wooden piece 663.

[0027] The basic structure 60B1 as described above can be constructed, for example, as follows. First, the upper groove 67 of the wooden piece 661 and the lower groove 68 of the wooden piece 663 are fitted together to form a half-jointed joint, thereby forming the intersection J8. Next, the upper groove 63 of the first member 662A constituting the wooden piece 662 is fitted into the lower groove 62 of the wooden piece 661 to form a half-edge joint, thereby forming the intersection J7. At this time, the end surface 662s of the first member 662A is brought into contact with the side surface of the wooden piece 663. Then, one end 65s of the linear connecting material 65 is embedded in the first member 662A through the through hole 69 formed in the wooden piece 663, and the other end 65t of the linear connecting material 65 protruding from the side of the wooden piece 663 is covered with the second member 662B that constitutes the wooden piece 662 so as to embed the end 65t.

[0028] As shown in Fig. 3, multiple basic structures 60A share one piece of wood 61. For example, in the basic structure 60A4 depicted in the center of Fig. 3, the topmost piece of wood 61 is the same as the bottommost piece of wood 61 in the basic structure 60A1 depicted above the basic structure 60A4. In this way, the wooden piece 61 forming the polygon of one basic structure 60A4 simultaneously forms the polygons of the other basic structures 60A1 to A3. Furthermore, as shown in FIG. 7, the basic structure 60A and the basic structure 60B1 share the wood 662 (wood 612) and the wood 661 (wood 613). In this way, the wooden pieces 661 and 662 that form the polygon of one basic structure 60B1 simultaneously form the polygon of the other basic structure 60A.

[0029] The wood 61 that constitutes such a wooden unit 6 has the same cross-sectional shape perpendicular to its extension direction, except for the parts that are cut out for half-joint joints (and the parts that are joined by connecting hardware 20, which will be described next). In addition, in the portion of the wooden piece 61 that is cut out for half-slit joints, the thicknesses of the upper grooves 63, 67 and the lower grooves 62, 68 are adjusted so that the thickness when the upper grooves 63, 67 and the lower grooves 62, 68 are half-slit joined is the same as the thickness of the wooden piece 61. As a result, the wood unit 6 is formed so that its thickness is uniform over the entire surface.

[0030] In the planar body 8 as described above, when viewed from above, at the intersection of the upper wooden piece 81 and the middle wooden piece 82 and the position where the wood unit 6 overlaps, the upper wooden piece 81, the middle wooden piece 82, and the wood unit 6 are connected by connecting hardware 20. FIG. 8 is a cross-sectional view showing a connector metal used in a wooden frame. 8, the connecting hardware 20 includes a connecting bolt 21 extending in the vertical direction Dv, a plate 22, a nut 23, and a locking device 27. The connecting bolt 21 is inserted from below into bolt insertion holes 81h, 82h, and 6h formed in the upper wooden piece 81, the middle wooden piece 82, and the wood unit 6. The inner diameters of the bolt insertion holes 81h, 82h, and 6h are larger than the outer diameter of the shaft portion 21b of the connecting bolt 21, for example, by about 4 mm. A recess 6d is formed on the underside of the wood unit 6 to accommodate the head 21a of the connection bolt 21. The head 21a of the connection bolt 21 accommodated in the recess 6d is covered by a wooden cap 24. An expanded diameter recess 81d is formed on the top surface of the upper wooden piece 81, with the bolt insertion hole 81h being further enlarged. The inner diameter of the expanded diameter recess 81d is larger than the outer diameter of the shank 21b of the connection bolt 21, for example, by approximately 8 mm. A pipe 84 made of acrylic, metal, or the like is inserted into the expanded diameter recess 81d. The shank 21b of the connection bolt 21 protrudes upward from the top surface of the upper wooden piece 81 through the pipe 84. The inner diameter of the pipe 84 is larger than the outer diameter of the shank 21b of the connection bolt 21, for example, by approximately 1 mm. The outer diameter of the pipe 84 is smaller than the inner diameter of the expanded diameter recess 81d, for example, by approximately 1 mm. In the diameter-expanding recess 81d, a waterproof caulking material 85 is filled on the pipe 84. Note that the waterproof caulking material 85 does not necessarily have to be provided. Plate 22 is made of metal and is provided along the top surface of upper wooden piece 81. Shank 21b of connecting bolt 21 is inserted into a through-hole (not shown) formed in plate 22. A nut 23 and a locking element 27 for nut 23 are fastened to the tip of shaft 21b of connecting bolt 21. Furthermore, wooden plugs 88 extending in the vertical direction Dv are embedded between the upper wooden pieces 81 and the middle wooden pieces 82, and between the middle wooden pieces 82 and the wood units 6, respectively.

[0031] In the above example, the total clearance provided between the shank 21b of the connection bolt 21 and the expanded diameter recess 81d via the pipe 84, i.e., the sum of the clearance between the shank 21b of the connection bolt 21 and the inner surface of the pipe 84 and the clearance between the outer surface of the pipe 84 and the expanded diameter recess 81d, is, for example, 1 + 1 = 2 mm. This is smaller than the clearance (for example, 4 mm in the above example) between the shank 21b of the connection bolt 21 and the bolt insertion holes 81h, 82h, and 6h formed in the upper wooden piece 81, the middle wooden piece 82, and the wood unit 6. With this configuration, when a horizontal force acts on the wood unit 6 or the middle wooden piece 82, this horizontal force is not transmitted directly to the shank 21b of the connection bolt 21, but is transmitted, for example, from the middle wooden piece 82 to the upper wooden piece 81 via the wooden plug 88, and then from the top of the upper wooden piece 81 via the expanded diameter recess 81d and the pipe 84 to the shank 21b. This prevents the connection bolt 21 from being subjected to an excessive bending moment. In such a configuration, the pipe 84 can be installed simply by dropping it into the diameter-enlarged recess 81d from above, which improves workability. The horizontal force transmission mechanism is not limited to the above-described structure, and other structures may be used.

[0032] As shown in Fig. 1, the hanging hardware 10 suspends and supports the planar body 8 (upper timber 81, middle timber 82, and wooden unit 6) from the support material 51. As shown in Figs. 2 and 3, the hanging hardware 10 is provided at a position where the support material 51, the intersection of the upper timber 81 and middle timber 82, and the wooden unit 6 overlap, when viewed from above. Fig. 9 is a view of a hanging hardware used in a wooden frame as viewed from a first horizontal direction. Fig. 10 is a view of a hanging hardware used in a wooden frame as viewed from a second horizontal direction. As shown in Figures 9 and 10, the hanging hardware 10 comprises a hanging support part 110, a connecting part 120 provided at the upper end of the hanging support part 110, and a connecting part 130 provided at the lower end of the hanging support part 110. The suspension support part 110 includes a suspension bolt 111 extending in the up-down direction Dv. The suspension bolt 111 includes a first suspension bolt 112 and a second suspension bolt 113, each having threads in different directions. The first suspension bolt 112 and the second suspension bolt 113 are connected vertically by a turnbuckle 114. The upper end of the first suspension bolt 112 is connected to the connecting part 120. The lower end of the first suspension bolt 112 is threaded into a female threaded hole formed in the upper part of the turnbuckle 114. The lower end of the second suspension bolt 113 is connected to the connecting part 130. The upper end of the second suspension bolt 113 is threaded into a female threaded hole formed in the lower part of the turnbuckle 114.

[0033] FIG. 11 is an enlarged view of the connecting portion provided at the top of the hanging hardware in FIG. As shown in FIGS. 9 to 11, a connecting portion 120 provided at the upper end of the hanging support portion 110 connects the hanging support portion 110 to a support material 51 as a connection target. 11 , the connecting portion 120 includes a first steel member 121 and a second steel member 122. The first steel member 121 includes a base plate 121a and a pair of side plates 121b. The base plate 121a is connected to the support member 51, which is the object of connection, via a bracket metal fitting 123, an IT hanger 125, a bolt 126, and a nut 127. 10, the bracket metal fitting 123 has a U-shaped cross section and integrally comprises a base 123a that fits along the underside of the support material 51, and a pair of side portions 123b that rise upward from both sides of the base 123a in the width direction and fit along both side surfaces of the support material 51. As shown in FIG. 11, the base 123a of the bracket metal fitting 123 and the underside portion 51b of the support material 51 are connected by a pair of IT hangers 125.

[0034] The IT hanger 125 has a shaft 125s that extends in the vertical direction Dv and vertically penetrates the base 123a of the bracket metal fitting 123 and the underside 51b of the support member 51, a rotation bar 125r that is provided at the upper end of the shaft 125s and is rotatable around an axis that intersects the central axis of the shaft 125s, and a nut 125b that is provided at the lower end of the shaft 125s. The IT hanger 125 is inserted from below into through-holes 123h, 51h formed in the base 123a and the underside 51b, with the rotation bar 125r aligned with the shaft 125s and extending in the vertical direction Dv. Thereafter, the rotating bar 125r is rotated above the base 123a and the lower surface 51b to extend laterally, causing the rotating bar 125r to abut against the lower surface 51b from above, restricting downward movement of the IT hanger 125. In this state, the nut 125b is tightened, sandwiching the base 123a and the lower surface 51b between the rotating bar 125r and the nut 125b. In this way, the pair of IT hangers 125 connect the support member 51 and the bracket fitting 123. A locking member 125d is provided on the outside of the nut 125b. In addition to the connection by the pair of IT hangers 125 as described above, as shown in Fig. 10, the bracket fitting 123 is connected to both side surfaces of the support material 51 by screws 129. However, if the strength is sufficient, the connection by the screws 129 does not have to be performed.

[0035] As shown in Figure 11, the base plate 121a of the first steel material 121 is placed along the underside of the base portion 123a of the bracket metal fitting 123. The base plate 121a and the base portion 123a are fastened together by a bolt 126 that passes through the base plate 121a and the base portion 123a in the vertical direction, and a nut 127. The head 126a of the bolt 126 is housed in a through-hole 51k formed in the underside portion 51b of the support material 51, and the bolt 126 is not joined to the support material 51. The nut 127 is fastened to the shaft portion of the bolt 126. A locking member 127d is provided on the outside of the nut 127. The pair of side plates 121b are provided so as to protrude downward from opposite end edges of the base plate 121a on the side opposite to the support member 51.

[0036] The second steel material 122 includes a base plate 122a and a pair of side plates 122b protruding from opposite ends of the base plate 122a toward the support material 51. The upper end of the first suspension bolt 112 of the suspension support part 110 is inserted into the base plate 122a. The upper end of the first suspension bolt 112 is joined to the base plate 122a by a pair of nuts 128A and 128B that sandwich the base plate 122a from above and below. A locking device 128d is provided on the outer side (upper side) of the nut 128A provided on the tip side of the first suspension bolt 112. The pair of side plates 122b are provided to face each of the pair of side plates 121b of the first steel material 121. In this embodiment, the pair of side plates 121b of the first steel material 121 are inserted between the pair of side plates 122b. The pair of side plates 122b of the second steel material 122 may be inserted between the pair of side plates 121b of the first steel material 121. The first steel material 121 and the second steel material 122 are connected via a shaft member 124. The shaft member 124 is provided so as to penetrate through the pair of side plates 121b of the first steel material 121 and the pair of side plates 122b of the second steel material 122. The shaft member 124 includes a pipe member 124a, a shaft bolt 124b, a nut 124c, and a locking device 124d. The pipe member 124a is provided between the pair of side plates 121b. The shaft bolt 124b extends in a direction connecting the pair of side plates 121b and is provided so as to penetrate the pair of side plates 121b, the pair of side plates 122b, and the pipe member 124a. The nut 124c and the locking device 124d are fastened to the tip of the shaft bolt 124b.

[0037] At least when construction work is carried out to join the hanging hardware 10 to the support material 51, the connecting portion 120 allows the first steel material 121 and the second steel material 122 to rotate relatively around the shaft member 124, and the angle between the first steel material 121 and the second steel material 122 around the shaft member 124 can be adjusted. In this embodiment, as already explained, the roof material 32 is inclined, and accordingly, the support material 51 is also provided at an incline. The first steel material 121 is joined to such support material 51, and therefore is fixed in an inclined position as shown in Fig. 10 . Here, in this embodiment, the first steel material 121 is joined to the support material 51 so that the direction DR1 in which the roof material 32 and the support material 51 tilts and the direction DR2 in which the first steel material 121 and the second steel material 122 rotate relatively coincide with each other. Therefore, when joining the hanging hardware 10 to the support material 51, by adjusting the rotation angle of the first steel material 121 and the second steel material 122 around the shaft member 124 to adjust the rotational posture of the second steel material 122, the hanging support part 110 can be provided so that the extension direction of the hanging support part 110 joined to the second steel material 122 coincides with the vertical direction.

[0038] After adjusting the rotation angle of the second steel material 122 as described above, the axial bolt 124b of the shaft member 124 may be tightened to the nut 124c, so that the first steel material 121 and the second steel material 122 cannot rotate relative to each other around the shaft member 124. Alternatively, in order to easily follow horizontal displacement or deformation of the wooden frame 5 due to an earthquake or the like, the upper end of the hanging hardware 10 may be pin-joined to the support member 51 by leaving the axial bolt 124b of the axial member 124 unfastened to the nut 124c, so that the first steel member 121 and the second steel member 122 can rotate relatively around the axial member 124 even after construction.

[0039] FIG. 12 is an enlarged view of the connecting portion provided at the bottom of the hanging hardware in FIG. As shown in FIGS. 9, 10, and 12, the connecting portion 130 provided at the lower end of the hanging support portion 110 connects the hanging support portion 110 to the planar body 8 as the connection target. As shown in FIG. 12 , the connecting portion 130 includes a first steel member 131 and a second steel member 132. The first steel member 131 includes a base plate 131a and a pair of side plates 131b. The base plate 131a is connected to the planar body 8, which is the object of connection, via a connecting hardware 20. The tip of the connecting bolt 21 of the connecting hardware 20, which connects the upper wooden piece 81, the middle wooden piece 82, and the wood unit 6 that make up the planar body 8, penetrates the base plate 131a and protrudes upward. A nut 23 is fastened to the tip of the connecting bolt 21, so that the planar body 8 is connected to the hanging support portion 110 via the connecting portion 130. The pair of side plates 131b are provided so as to protrude upward from opposite end sides of the base plate 131a on the side opposite to the planar body 8.

[0040] The second steel material 132 includes a base plate 132a and a pair of side plates 132b protruding from opposite edges of the base plate 132a toward the sheet body 8. The lower end of the second suspension bolt 113 of the suspension support part 110 is inserted into the base plate 132a. The lower end of the second suspension bolt 113 is joined to the base plate 132a by a pair of nuts 138A and 138B that sandwich the base plate 132a from above and below. A locking device 138d is provided on the outer side (lower side) of the nut 138A provided on the tip side of the second suspension bolt 113. The pair of side plates 132b are provided to face each of the pair of side plates 131b of the first steel material 131. In this embodiment, the pair of side plates 131b of the first steel material 131 are inserted between the pair of side plates 132b. The pair of side plates 132b of the second steel material 132 may be inserted between the pair of side plates 131b of the first steel material 131. The first steel material 131 and the second steel material 132 are connected via a shaft member 134. The shaft member 134 is provided so as to penetrate through the pair of side plates 131b of the first steel material 131 and the pair of side plates 132b of the second steel material 132. The shaft member 134 includes a pipe member 134a, a shaft bolt 134b, a nut 134c, and a locking device 134d. The pipe member 134a is provided between the pair of side plates 131b. The shaft bolt 134b extends in a direction connecting the pair of side plates 131b and is provided so as to penetrate the pair of side plates 131b, the pair of side plates 132b, and the pipe member 134a. The nut 134c and the locking device 134d are fastened to the tip of the shaft bolt 134b.

[0041] At least when performing construction work to join the hanging hardware 10 to the planar body 8, the connecting portion 130 allows the first steel material 131 and the second steel material 132 to rotate relatively around the shaft member 134, and the angle between the first steel material 131 and the second steel material 132 around the shaft member 134 can be adjusted. In this embodiment, the roof material 32 is inclined, and accordingly, the sheet body 8 is also inclined. The first steel material 131 is joined to such a sheet body 8, and therefore is fixed in an inclined position as shown in FIG. Here, in this embodiment, the first steel material 131 is joined to the planar body 8 so that the direction DR3 in which the planar body 8 tilts and the direction DR4 in which the first steel material 131 and the second steel material 132 rotate relatively coincide with each other. Therefore, when joining the hanging hardware 10 to the planar body 8, by adjusting the rotation angle of the first steel material 131 and the second steel material 132 around the shaft member 134 to adjust the rotational posture of the second steel material 132, the hanging support part 110 can be provided so that the extension direction of the hanging support part 110 joined to the second steel material 132 coincides with the vertical direction.

[0042] After adjusting the rotation angle of the second steel material 132 as described above, the axial bolt 134b of the shaft member 134 may be tightened to the nut 134c, so that the first steel material 131 and the second steel material 132 cannot rotate relative to each other around the shaft member 134. Alternatively, in order to easily follow horizontal displacement or deformation of the wooden frame 5 due to an earthquake or the like, the axial bolt 134b of the axial member 134 may not be tightened to the nut 134c, and the first steel member 131 and the second steel member 132 may be left in a state in which they can rotate relatively around the axial member 134 even after construction, so that the lower end of the hanging hardware 10 is pin-connected to the planar body 8.

[0043] In this way, the sheet-shaped body 8 is suspended and supported by the support member 51 using a plurality of hanging hardware 10. As shown in FIG. 1, adjacent hanging hardware 10 may be connected to each other by a diagonal member 200 such as a wire cable. For this reason, as shown in Figures 9 to 12, each hanging hardware 10 is provided with diagonal member mounting portions 141 on the upper and lower connecting portions 120, 130. The diagonal member mounting portions 141 are formed in a circular shape and are provided at both ends of the shaft member 124. The diagonal member mounting portions 141 are arranged inside U-shaped plates 143 provided on both outer sides of the pair of side plates 122b, 132b. Rings 200r are formed on both ends of the diagonal member 200. The diagonal member 200 is connected to the diagonal member mounting portions 141 by hanging the rings 200r around the outer periphery of the diagonal member mounting portions 141. The diagonal member 200 is stretched between the diagonal member mounting portion 141 of the connecting portion 120 provided at the upper end of one hanging hardware 10 and the diagonal member mounting portion 141 of the connecting portion 130 provided at the lower end of another hanging hardware 10 provided adjacent to the first hanging hardware 10.

[0044] The wooden unit 6 as described above is a wooden unit 6 formed by intersecting a plurality of long wooden pieces 61 with each other, and the plurality of wooden pieces 61 are arranged in a ring shape so that each forms one side of a polygon, thereby forming basic structures 60A, 60B, and the plurality of basic structures 60A, 60B are combined to form a plane as a whole, and in each of the plurality of basic structures 60A, 60B, at least one intersection J6, J9 of a plurality of intersections J1 to J6, J7 to J9 where the wooden pieces 61 intersect with each other, one wooden piece 616, 662 is sandwiched between a second wooden piece 615, 663, and a first member 616A, 662A and a second member 615, 663 are intersected. 6B, 662B, and the ends 65s, 65t of the linear connecting material 65 provided in the through holes 64, 69 of the second wooden pieces 615, 663 are embedded in the first members 616A, 662A and the second members 616B, 662B, thereby joining the first wooden pieces 616, 662 and the second wooden pieces 615, 663 to each other, and at the other intersections J1 to J5, J7, J8 of the multiple intersections J1 to J6, J7 to J9, one wooden piece 61 located on a first side in the circumferential directions Dc, Ds of the polygon forming the basic structures 60A, 60B is overlapped with the other wooden piece 61 so as to be located on the same side in the direction perpendicular to the plane, and a half-timber joint is formed. According to the above-described configuration, basic structures 60A, 60B are formed by arranging a plurality of long wooden pieces 61 in a ring shape so that each piece forms one side of a polygon, and the plurality of basic structures 60A, 60B are combined to form a plane as a whole to form the wooden unit 6. Here, in each of basic structures 60A, 60B, the wooden pieces 61 are overlapped at the intersections where they intersect with each other, and are joined by half-timber joints, with the wooden piece 61 located on a first side in the circumferential directions Dc, Ds of the polygon forming said basic structures 60A, 60B being located on the same side in the direction perpendicular to the plane as the other wooden piece 61. Therefore, for example, if the wood unit 6 is extended horizontally so that this same side is on the bottom, and if a certain piece of wood 61 (for example, wood 615 of the basic structure 60A in Figure 4) is taken as the starting point, one piece of wood 61 (wood 614) located on a first side in the circumferential direction Dc (in this embodiment, the counterclockwise side in the circumferential direction Dc of the basic structure 60A) is located below the other piece of wood 61 (wood 615) that serves as the starting point at the intersection, and is joined with a half-timber joint so that the starting piece of wood 61 (wood 615) is located on the top, so that the starting piece of wood 61 (wood 615) is supported from below by one piece of wood 61 (wood 614) located on the first side. Similarly, the wood 61 (wood 613) located further to the first side in the circumferential direction Dc than the wood 61 (wood 614) located on the first side is located below at the intersection, and the wood 61 (wood 614) located on the first side of the starting wood 61 (wood 615) is located above, so the wood 61 (wood 614) located on the first side (the other wood 614) supporting the starting wood 61 (wood 615) is supported from below by the wood 61 (one piece of wood 613) located further to the first side of the wood 61 (wood 614).As described above, basic structures 60A and 60B have a plurality of wooden pieces 61 arranged in a ring shape, each forming one side of a polygon, and so as each wooden piece 61 is supported by a wooden piece 61 located on the first side in the circumferential directions Dc and Ds, the starting wooden piece 61 will eventually become the wooden piece 61 located on the first side, and the last wooden piece 61, i.e., the wooden piece 61 located on the second side opposite the first side of the starting wooden piece 61, will be supported by this starting wooden piece 61. In this way, adjacent wooden pieces 61 support and are supported by each other, allowing the wooden pieces 61 to be joined together rationally and firmly. When constructing the basic structures 60A and 60B as described above, if half-lap joints are performed sequentially from the starting wooden piece 61 toward the first side in the circumferential directions Dc and Ds, the last wooden piece 61 to be joined must be joined to both the starting wooden piece 61 and the previously joined wooden piece 61 to construct the basic structures 60A and 60B, simultaneously to form a circular polygon. However, the two notches (upper grooves 63, 67 and lower grooves 62, 68) required for half-lap joints, which are provided in each wooden piece 61, are provided on different sides (upper and lower sides) of the wooden piece 61 in a direction perpendicular to the plane. For this reason, even if the last wooden piece 61 to be joined is moved in a direction perpendicular to the plane in order to half-lap join the previously joined wooden piece 61, the notch for joining the last wooden piece 61 to the starting wooden piece 61 is provided on the opposite side of the movement direction, and therefore the last wooden piece 61 to be joined will not be joined to the starting wooden piece 61. In this way, it is not easy to half-join the last wooden piece 61 to be joined to both the starting wooden piece 61 and the previously joined wooden piece 61. Here, for example, at the intersections J6 and J9 where the last wooden pieces 61 are joined, if the wooden pieces 61 to be joined are first wooden pieces 616 and 662 and the starting wooden pieces 61 adjacent thereto are second wooden pieces 615 and 663, then between the first wooden pieces 616 and 662 and the second wooden pieces 615 and 663, the first wooden pieces 616 and 662 are divided into first members 616A and 662A and second members 616B and 662B with the second wooden pieces 615 and 663 in between, and the ends 65s and 65t of the linear connecting members 65 provided in the through holes 64 and 69 of the second wooden pieces 615 and 663 are joined to the first members 616A and 662A and the second members 616B and 662B. , 662A and the second members 616B, 662B, when arranging the first wooden pieces 616, 662, for example, one end of the first members 616A, 662A is joined to the previously joined wooden pieces 611, 661, and the other end is abutted against the side of the second wooden pieces 615, 663.Then, the second members 616B, 662B are positioned on the opposite side of the first members 616A, 662A across the second wooden pieces 615, 663, and a linear connecting member 65 is inserted between them, thereby easily joining the first wooden pieces 616, 662 and the second wooden pieces 615, 663. In order to realize the above-described structure, the only member required to join the wooden pieces 61 is the linear connector 65, and no other metal joints are particularly required. Therefore, the cost of realizing the wooden unit 6 is kept low. Moreover, the wooden unit 6 as described above is formed entirely from wood 61, and the entire surface can be exposed to wood. In particular, as described above, no special metal joints are required to join the wooden pieces 61 together, which prevents metal parts from appearing on the surface of the wooden unit 6. Furthermore, the wooden unit 6 is constructed by combining basic structures 60A and 60B formed as polygons, which allows the expression of a geometrically aesthetic pattern. In this way, the aesthetic appearance of the wooden unit 6 can be improved. As described above, by joining the pieces of wood 61 together without using special metal joints, it is possible to suppress costs and realize a strong and aesthetically pleasing structure.

[0045] Furthermore, the wood 61 forming the polygon of one basic structure 60A, 60B simultaneously forms the polygon of the other basic structure 60A, 60B. According to this configuration, the wooden pieces 61 forming the polygon of one basic structure 60A, 60B simultaneously form the polygon of the other basic structure 60A, 60B, so that the wooden unit 6 combining a plurality of basic structures 60A, 60B can be efficiently formed with fewer wooden pieces 61.

[0046] Furthermore, the wooden frame 5 using the wooden units 6 as described above comprises a support material 51 extending horizontally, the wooden units 6 extending horizontally below the support material 51, and a hanging hardware 10 for suspending and supporting the wooden units 6 relative to the support material 51. According to this configuration, by placing the above-mentioned wooden units 6 below the support material 51, it is possible to provide a wooden frame 5 equipped with wooden units 6 that are strong and have an aesthetically pleasing structure while keeping costs down.

[0047] The wooden units 6 as described above do not need to be pin-joined to the support material 51. If the wooden units 6 are suspended via hanging hardware 10 whose upper ends are pin-joined to the support material 51, the wooden units 6 can be easily attached and adjusted, improving construction efficiency. Furthermore, when the wooden frame 5 is horizontally displaced or deformed due to an earthquake or the like, the wooden units 6 can easily follow this.

[0048] Furthermore, each of the multiple pieces of wood 61 is formed to have a uniform thickness by having the same cross-sectional shape perpendicular to the axial direction, except for the portions cut out for half-timber joints. As a result, the wooden units 6 are installed in a planar fashion using wooden materials with the same longitudinal cross-sectional shape, resulting in uniform strength and stability. The surfaces of the wooden units 6 also have a flat, beautiful finish. Furthermore, because the vertical heights of the wooden units 6 installed in a planar fashion are uniform, uniform load distribution is possible, improving the stability of the entire structure and achieving a beautiful and robust wooden structure.

[0049] (Modification of the embodiment) The wooden unit and wooden frame of the present invention are not limited to the above-described embodiment explained with reference to the drawings, and various other modifications are conceivable within the technical scope thereof. At one intersection J6 where the wooden plugs are joined in the above embodiment shown in Figure 6, the first member 616A and the second member 616B constituting the first piece of wood 616 are arranged to sandwich the second piece of wood 615, and in this state, the linear connecting member 65 is arranged to extend along the extension direction of the first piece of wood 616 and pass through the through hole 64 of the second piece of wood 615, but this is not limited to this. FIG. 13 is a plan view showing one of the joints of the wood according to this modification. 13, the first wooden piece 616 may be provided so that its end surface 616s abuts against the side surface of the second wooden piece 615. In this case, no wooden piece 61 is provided on the opposite side of the first wooden piece 616 across the second wooden piece 615. In this state, linear connecting member 65A extends along the extension direction of first wooden piece 616 and is provided so as to pass through through-hole 64 of second wooden piece 615. One end 65s of linear connecting member 65A is embedded in first wooden piece 616. The other end 65t of linear connecting member 65A is embedded in second wooden piece 615. The other end 65t of linear connecting member 65A is formed so that the end face formed at end 65t is positioned on the same plane as the side surface of second wooden piece 615. The same configuration as in FIG. 13 can also be used at the intersection J9 where the wooden plug is joined in FIG.

[0050] The wooden unit 6A of this modified example is formed by intersecting a plurality of long wooden pieces 61 with each other. The wooden pieces 61 are arranged in a ring shape so that each forms one side of a polygon, thereby forming a basic structure 60A. The plurality of basic structures 60A are combined to form a plane as a whole. In each of the plurality of basic structures 60A, at least one intersection J6 among a plurality of intersections where the wooden pieces 61 intersect with each other, an end surface 616 of one wooden piece 616 is connected to the end surface 616. 16s is abutted against the side of the second wooden piece 615, and the end 65s of the linear connecting material 65 provided in the through hole 64 of the second wooden piece 615 is embedded in the first wooden piece 616, thereby joining the first wooden piece 616 and the second wooden piece 615 to each other, and at other intersections among the multiple intersections, one wooden piece 61 located on a first side in the circumferential direction of the polygon forming the basic structure 60A is overlapped with the other wooden piece 61 so that they are located on the same side in a direction perpendicular to the plane, and are joined together with a half-timber joint. According to the above-described configuration, a basic structure 60A is formed by arranging a plurality of long wooden pieces 61 in a ring shape, each forming one side of a polygon. The basic structures 60A are then combined to form a plane as a whole, forming the wooden unit 6A. In each of the basic structures 60A, the wooden pieces 61 are joined at their intersections with each other, with the wooden piece 61 located on a first side in the circumferential direction of the polygon forming the basic structure 60A overlapping the other wooden piece 61 at their intersections, so that the wooden piece 61 is located on the same side in the direction perpendicular to the plane as the other wooden piece 61. Therefore, as already described in the above embodiment, the wooden pieces 61 support each other, allowing the wooden pieces 61 to be joined together rationally and firmly. Here, when constructing the basic structure 60A as described above, if half-lap joints are performed sequentially from the starting wooden piece 61 toward the first side in the circumferential direction as described above, the last wooden piece 61 to be joined must be joined to both the starting wooden piece 61 and the previously joined wooden piece 61 to construct the basic structure 60A, simultaneously to form a circular polygon. However, the two notches (upper groove 63 and lower groove 62 in the above embodiment) required for half-lap joints, which are provided in each wooden piece 61, are provided on different sides (upper and lower sides) of the wooden piece 61 in a direction perpendicular to the plane. For this reason, even if the last wooden piece 61 to be joined is moved in a direction perpendicular to the plane in order to half-lap joint the previously joined wooden piece 61, the notch for joining the last wooden piece 61 to the starting wooden piece 61 is provided on the opposite side of the movement direction, and therefore the last wooden piece 61 to be joined will not be joined to the starting wooden piece 61. In this way, it is not easy to half-join the last piece of wood 61 to be joined to both the starting piece of wood 61 and the piece of wood 61 joined immediately before. Here, for example, at the intersection J6 where the wooden pieces 61 are finally joined, if the wooden piece 61 to be joined is the first wooden piece 616 and the adjacent wooden piece 61 that serves as the starting point is the second wooden piece 615, then between these first wooden piece 616 and second wooden piece 615, the end face 616s of the first wooden piece 616 is abutted against the second wooden piece 615, and the end 65s of the linear connecting member 65 provided in the through hole 64 of the second wooden piece 615 is embedded in the first wooden piece 616. In this case, when arranging the first wooden piece 616, for example, one end of the first wooden piece 616 is half-joined to the wooden piece 611 that was joined immediately before, and the other end is abutted against the side of the second wooden piece 615, and the linear connecting member 65 is inserted between them, thereby easily joining the first wooden piece 616 and the second wooden piece 615. In order to realize the above-described structure, the only member required to join the wooden pieces 61 is the linear connector 65, and no other metal joints are particularly required. Therefore, the cost of realizing the wooden unit 6A is kept low. Moreover, the wooden unit 6A as described above is formed entirely from wood 61, allowing the entire surface to be exposed to wood. In particular, as described above, no special metal joints are required to join the wooden pieces 61 together, which prevents metal parts from appearing on the surface of the wooden unit 6A. Furthermore, the wooden unit 6A is constructed by combining basic structures 60A formed in polygonal shapes, which allows for the expression of a geometrically aesthetic pattern. In this way, the aesthetic appearance of the wooden unit 6A can be improved. As described above, by joining the pieces of wood 61 together without using special metal joints, it is possible to suppress costs and realize a strong and aesthetically pleasing structure.

[0051] (Another modified example of the embodiment) In the above embodiment, the joining form described as a wooden plug joint, in which one piece of wood is divided into a first member and a second member, and the first member and the second member are arranged so as to sandwich the second piece of wood, and the two pieces are joined with a linear connector, has been described as being applied to only one of the intersections included in each of basic structures 60A and 60B, but this is not limited to this. For example, as in basic structure 60B2 shown in the upper right of Figure 4, multiple intersections may be considered as one intersection, and wooden plug joints may be applied to these multiple intersections. Furthermore, in the above embodiment, the basic structures 60A and 60B are described as being hexagonal and triangular in shape, but this is not limited to this, and the basic structures may be configured to have other polygonal shapes, such as a square, heptagon, or octagon. In addition to this, it is possible to select and discard the configurations given in the above embodiment and modified examples, or to change them to other configurations as appropriate. [Explanation of symbols]

[0052] 5 Wooden frame 616B, 662B 2nd member 6, 6A Wooden unit 64, 69 Through hole 10 Hanging hardware 65, 65A Linear connector 51 Support material 65s, 65t end 60A, 60B Basic structure J1~J9 intersection 61, 611~616, 66, 661~663 Wood 616, 662 One piece of wood J1~J5, J7, J8 Other intersections 615, 663 Second wood J6, J9 First intersection 616A, 662A First member Dc, Ds Circumferential direction

Claims

1. A wood unit formed by crossing a plurality of long pieces of wood with each other, A basic structure is formed by arranging a plurality of the wooden pieces in a ring so that each piece forms one side of a polygon, and a plurality of the basic structures are combined to form a plane as a whole; In each of the plurality of basic structures, At least one of the intersections where the wooden pieces intersect is divided into a first member and a second member with the second wooden piece sandwiched therebetween, and ends of linear connecting members provided in through holes of the second wooden piece are embedded in the first member and the second member, thereby joining the first wooden piece and the second wooden piece together; At other of the plurality of intersections, one of the wooden pieces located on a first side in the circumferential direction of the polygon forming the basic structure is overlapped with the other wooden piece so as to be located on the same side in a direction perpendicular to the plane, and is joined by a half-lap joint. A wooden unit characterized by:

2. A wood unit formed by crossing a plurality of long pieces of wood with each other, A basic structure is formed by arranging a plurality of the wooden pieces in a ring so that each piece forms one side of a polygon, and a plurality of the basic structures are combined to form a plane as a whole; In each of the plurality of basic structures, At least one of the intersections where the wooden pieces intersect is such that an end face of the first wooden piece abuts against a side face of the second wooden piece, and an end of a linear connecting material provided in a through hole of the second wooden piece is embedded in the first wooden piece, thereby joining the first wooden piece and the second wooden piece together; At other of the plurality of intersections, one of the wooden pieces located on a first side in the circumferential direction of the polygon forming the basic structure is overlapped with the other wooden piece so as to be located on the same side in a direction perpendicular to the plane, and is joined by a half-lap joint. A wooden unit characterized by:

3. The wood pieces forming the polygons of one of the basic structures simultaneously form the polygons of another of the basic structures.

3. The wood unit according to claim 1 or 2.

4. A wooden structure using the wooden unit according to claim 1 or 2, a support member extending laterally; The wood unit is provided below the support material and extends laterally; a hanging hardware for suspending and supporting the wooden unit from the support material; A wooden structure characterized by comprising:

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