Member joining structure

Abstract

To provide a member joining structure capable of improving the strength of a joining point with a simple configuration.SOLUTION: A member joining structure 1 includes: a pipe member 10 inserted into a hole Gc that penetrates a base G in a second direction; a first plate portion 21 provided in a joining member 20 and having a first through hole 21a formed in the second direction; a second plate portion 31 that contacts the base G on the opposite side of the first plate portion 21 in the second direction and has a second through hole 31a formed in the second direction; and a bolt 41 inserted through the first through hole 21a, the interior of the pipe member 10, and the second through hole 31a, in a state where the first plate portion 21 contacts one end face Ga of the base G in the second direction at a position where the first through hole 21a and the interior of the pipe member 10 are communicated with each other, and the second plate portion 31 contacts the other end face Gb of the base G in the second direction at a position where the second through hole 31a and the interior of the pipe member 10 are communicated with each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a member joint structure used in the skeleton of a building, etc. [Background technology]

[0002] Techniques for joining members have already been developed, and the technique described in Patent Document 1 is one example. The joining structure described in Patent Document 1 involves inserting a bolt between two members while the end face of one member is butted against the end face of the other member, thereby rigidly joining the two members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-265553 Summary of the Invention [Problem to be solved by the invention]

[0004] In the joint structure described in Patent Document 1, when a rotational force is applied to the other of the two members, a compressive force is concentrated at the joint between the two members, which can cause one member to sink into the other member. As a result, the strength of the joint between the two members may not be fully exerted.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its object is to provide a component joining structure that can improve the strength of the joint with a simple configuration. [Means for solving the problem]

[0006] The above-mentioned object can be achieved by the member joining structure of the present invention, which provides a member joining structure for joining a joining member to one end face in a transverse direction intersecting the specified direction of a cross member extending in a specified direction, the member joining structure comprising: a pipe member inserted into a hole penetrating the cross member in the transverse direction; a first plate portion provided on the joining member and having a first through hole formed in the transverse direction; a second plate portion contacting the cross member on the opposite side of the first plate portion in the transverse direction and having a second through hole formed in the transverse direction; and a bolt inserted through the first through hole, the interior of the pipe member, and the second through hole, in a state in which the first plate portion contacts one end face in the transverse direction of the cross member at a position where the first through hole and the interior of the pipe member communicate, and the second plate portion contacts the other end face in the transverse direction of the cross member at a position where the second through hole and the interior of the pipe member communicate.

[0007] In the member joining structure of the present invention, compressive force generated at the joint can be transmitted from the first plate to the tubular member, and then from the tubular member to the second plate, thereby preventing the compressive force from concentrating at the joint and improving the strength of the joint with a simple structure.

[0008] Furthermore, one end of the pipe member in the intersecting direction may be in contact with the first plate portion, and the other end of the pipe member in the intersecting direction may be in contact with the second plate portion. With the above configuration, the compressive force can be appropriately transmitted from the first plate portion to the second plate portion via the pipe member.

[0009] The tubular member may also be made of steel. With the above configuration, the strength of the joint can be improved.

[0010] The first plate portion and the second plate portion may be made of steel. With the above configuration, the strength of the joint can be improved.

[0011] The cross members may also be made of wood. With the above-described configuration, the effect of the present invention can be further enhanced, since wooden beams are prone to sinking.

[0012] In addition, the connecting member may connect the cross member to a member perpendicular to the cross member that contacts the connecting member on the opposite side of the cross member in the intersecting direction, and the second plate portion may connect the cross member to a member that contacts the second plate portion on the opposite side of the cross member in the intersecting direction. With the above configuration, when connecting a cross member, a member perpendicular to the cross member, and a member in contact with the second plate portion, the strength of the joint can be improved with a simple configuration.

[0013] In addition, the component joining structure may further have a connecting portion for connecting the cross member to another cross member, and the first through hole of the first plate portion may be provided at a position that avoids the connecting portion when the first plate portion is viewed in a plane. With the above configuration, when a cross member is connected to another cross member by a connecting portion, interference between the bolt inserted into the first through hole and the connecting portion can be avoided.

[0014] In addition, in the member joining structure, the intersecting direction may be the vertical direction. With the above configuration, when connecting a cross member and a member extending in the vertical direction, the strength of the joint can be improved with a simple configuration. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a member joining structure that can improve the strength of a joining portion with a simple configuration. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is an exploded perspective view showing a member joining structure according to an embodiment of the present invention; [Figure 2] 2 is a cross-sectional view taken along line AA of the member joining structure of FIG. 1 after assembly. [Figure 3]FIG. 10 is a plan view showing a member joining structure according to a first modified example of the present invention. [Figure 4] FIG. 10 is an exploded perspective view showing a member joining structure according to a second modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] One embodiment of the present invention (hereinafter referred to as the present embodiment) will be described in detail below with reference to a preferred embodiment shown in the accompanying drawings. Note that the following embodiment is merely an example given to facilitate understanding of the present invention and is not intended to limit the present invention. In other words, the configuration of the present invention may be modified or improved from the following embodiment without departing from the spirit of the present invention. In addition, the drawings show each component somewhat simplified and schematic to make the explanation easier to understand, and the size (dimensions) of each component and the spacing between components shown in the drawings may differ from the actual ones. Furthermore, unless otherwise specified, the material and shape of each member used to implement the present invention can be set arbitrarily depending on the application of the present invention and the state of the art at the time of implementing the present invention.

[0018] In this specification, "orthogonal" and "perpendicular" include the range of error acceptable in the technical field to which the present invention pertains. For example, "orthogonal" and "perpendicular" mean that the error is within a range of less than ±10° from the strict orthogonal and perpendicular directions, and the error from the strict orthogonal and perpendicular directions is preferably 5° or less, and more preferably 3° or less.

[0019] <<Regarding the member joining structure according to this embodiment>> A member joint structure according to this embodiment (hereinafter referred to as member joint structure 1) will be described with reference to FIGS. In this embodiment, the member joint structure 1 is used when connecting a base G placed on a foundation F to a column C (see FIG. 2) standing upright from the base G, as shown in FIG. The base G is a horizontal member extending in a predetermined direction, and is made of wood, for example. The pillar C extends in a direction (corresponding to the intersecting direction) perpendicular to (intersecting with) a predetermined direction, and is a member (vertical member) perpendicular to the base G, and is made of wood, for example. In the following description, the direction in which the cross member (foundation G) extends (corresponding to the predetermined direction) is referred to as the "first direction," the direction in which the member (column C) perpendicular to the cross member extends (corresponding to the intersecting direction) is referred to as the "second direction," and the direction perpendicular to the first and second directions is referred to as the third direction. In this embodiment, the first and third directions correspond to the horizontal direction, and the second direction corresponds to the vertical direction.

[0020] As shown in FIG. 1, the member joint structure 1 has four pipe members 10, a joint member 20 having a first plate portion 21, a second plate portion 31, and four bolts 41.

[0021] The pipe member 10 is a cylindrical member made of, for example, steel, and is inserted into a hole Gc that penetrates the base G in the second direction as shown in FIG. 1, and a bolt 41 (described later) is inserted into the inside of the pipe member 10 as shown in FIG. 2. When viewed from the second direction, the pipe member 10 is positioned around an anchor bolt 52 (described later), in other words, it is positioned to avoid interference with the anchor bolt 52. Note that the cross-sectional shape of the pipe member 10 that is perpendicular to the extension direction (second direction) is assumed to be circular, but may be rectangular, polygonal, or the like, or may be a partially open shape such as a C-shape or U-shape.

[0022] The pipe member 10 extends continuously in the second direction from a first plate portion 21 (described later) to a second plate portion 31 (described later). More specifically, one end 10a of the pipe member 10 in the second direction contacts the first plate portion 21 (described later), specifically the lower surface of the first plate portion 21 (the surface on the base G side in the second direction), as shown in Fig. 2. On the other hand, the other end 10b of the pipe member 10 in the second direction contacts the second plate portion 31, specifically the upper surface of the second plate portion 31 (the surface on the base G side in the second direction). Note that one end 10a of the pipe member 10 does not necessarily have to contact the first plate portion 21 when no compressive force is acting on the base G, but will contact the first plate portion 21 when a compressive force is acting on the base G. Similarly, the other end 10b of the pipe member 10 does not necessarily have to contact the second plate portion 31 when no compressive force is acting on the base G, but will contact the second plate portion 31 when a compressive force is acting on the base G.

[0023] The joint member 20 corresponds to, for example, a metal joint, and connects the base G and the column C that contacts the joint member 20 on the opposite side of the base G in the second direction, as shown in FIG. As shown in FIG. 2, the joining member 20 is joined to one end face Ga (upper face) of the base G on the pillar C side in the second direction, and more specifically, includes a first plate portion 21 and a protruding plate portion 22.

[0024] 2, the first plate portion 21 is disposed on one end face Ga of the base G. The first plate portion 21 is a plate extending along a horizontal plane (a plane perpendicular to the second direction), has, for example, a rectangular shape when viewed from the second direction, and is made of, for example, steel. The first plate portion 21 has first through holes 21a formed in the second direction, and in this embodiment, has four first through holes 21a as shown in Fig. 1. When viewed from the second direction, the four first through holes 21a are positioned so as to overlap with the four pipe members 10, and are positioned around anchor bolts 52 described below, in other words, at positions that avoid interference with the anchor bolts 52.

[0025] The protruding plate portion 22 protrudes from the first plate portion 21 in the second direction toward the opposite side from the base G. The protruding plate portion 22 is a plate extending along a plane perpendicular to the first direction, has, for example, a rectangular shape when viewed from the first direction, and is made of, for example, steel. The protruding plate portion 22 protrudes from the center of the first plate portion 21 in the first direction, and is positioned so as to overlap with an anchor bolt 52, which will be described later, when viewed from the second direction. The protruding plate portion 22 has a plurality of (four) through-holes 22a along the first direction. A slit (not shown) into which the protruding plate portion 22 can be inserted is formed in the lower end surface of the pillar C (the end surface on the side of the base G in the second direction), and holes penetrating in the first direction are provided in the two side surfaces of the pillar C aligned in the first direction. By inserting the protruding plate portion 22 into the slit of the pillar C and inserting a pin (not shown) into the hole of the pillar C with the hole 22a of the protruding plate portion 22 aligned with the hole of the pillar C, the pillar C is fixed to the joining member 20 (protruding plate portion 22).

[0026] 1, the second plate portion 31 connects the base G and the foundation F and corresponds to, for example, a washer. The foundation F corresponds to a member that contacts the second plate portion 31 on the opposite side to the base G in the second direction. The second plate portion 31 is in contact with the base G on the opposite side to the first plate portion 21 in the second direction, more specifically, in contact with the other end face Gb of the base G in the second direction. The second plate portion 31 is a plate extending along a horizontal plane (a plane perpendicular to the second direction), has, for example, a rectangular shape when viewed from the second direction, and is made of, for example, steel. The second plate portion 31 has second through holes 31a formed in the second direction, and in this embodiment has four second through holes 31a. When viewed from the second direction, the four second through holes 31a overlap with the four first through holes 21a of the first plate portion 21, and are located around anchor bolts 52 (described later), in other words, in positions that avoid interference with the anchor bolts 52. In addition, a thread groove is formed on the edge surface of the second through holes 31a, allowing the end of the bolt 41 on the second plate portion 31 side to be screwed into the second through holes 31a.

[0027] 2, the second plate portion 31 has holes 31b along the second direction, through which ends of anchor bolts 52 protruding upward from the foundation F are inserted. The second plate portion 31 is fixed to the foundation F by inserting the ends of the anchor bolts 52 into the holes 31b and screwing nuts onto the ends of the anchor bolts 52. When viewed from the second direction, the holes 31b are located within an area surrounded by the multiple (four) second through holes 31a.

[0028] 2, a recessed portion Gd is formed on the other end surface Gb of the base G facing the foundation F in the second direction to avoid interference with the end of the anchor bolt 52, and the recessed portion Gd is recessed upward (toward the joining member 20 in the second direction) relative to the other end surface Gb of the base G. However, if the thickness of the second plate portion 31 in the second direction is greater than the length of protrusion of the anchor bolt 52 from the foundation F, it is not necessary to form the recessed portion Gd in the base G. As shown in FIG. 1, in the gap between the base G and the foundation F, packing 51 for underfloor ventilation is placed in the gap except for the area directly below the pillar C.

[0029] The bolt 41 is inserted through the first through hole 21a, the interior of the pipe member 10, and the second through hole 31a, and fastens the joining member 20 and the second plate portion 31 to the base G. When the bolt 41 is inserted, the first plate portion 21 contacts one end face Ga of the base G in the second direction at a position where the first through hole 21a communicates with the interior of the pipe member 10, as shown in Fig. 2. Furthermore, when the bolt 41 is inserted, the second plate portion 31 contacts the other end face Gb of the base G in the second direction at a position where the second through hole 31a communicates with the interior of the pipe member 10. In this embodiment, the bolt 41 is, for example, a bolt having a head (top) at the end on the joining member 20 side in the second direction. However, without being limited thereto, the bolt 41 may be, for example, a bolt having threads formed at both ends thereof, or a nut may be screwed onto the end of the bolt 41 instead of the head.

[0030] Such a bolt 41 is inserted through the first through hole 21a, the inside of the pipe member 10, and the second through hole 31a, and the tip (end) of the bolt 41 opposite the head is screwed into the second through hole 31a of the second plate portion 31, thereby fixing the joining member 20 and the second plate portion 31 to the base G. When the bolt 41 is inserted into the pipe member 10, a gap may be provided between the bolt 41 and the pipe member 10, but the smaller the gap, the more the bolt 41 can be prevented from buckling.

[0031] <<Operation and Effects of the Member Joining Structure According to the Present Embodiment>> In the member joint structure 1, when a rotational force is applied to the column C, a tensile force and a compressive force act on the joint between the base G and the column C, respectively. The tensile force is transmitted from the column C to the connecting member 20, more specifically, from the column C to the protruding plate portion 22 and the first plate portion 21 in that order, then from the head of the bolt 41 that contacts the upper surface of the first plate portion 21 to the bolt 41, then to the second plate portion 31 that screws into the tip of the bolt 41, and then to the other end face Gb of the base G. On the other hand, the compressive force is transmitted from the column C to the connecting member 20, more specifically, from the column C to the first plate portion 21, then from one end 10a of the pipe member 10 that contacts the underside of the first plate portion 21 to the pipe member 10, from the other end 10b of the pipe member 10 to the upper surface of the second plate portion 31, and from the underside of the second plate portion 31 to the foundation F. In this way, in the member connecting structure 1, the compressive force is transmitted with a simple configuration using so-called metal-to-metal contact.

[0032] As explained above, in the member joining structure 1, the compressive force generated at the joint can be transmitted from the first plate portion 21 to the pipe member 10, and then from the pipe member 10 to the second plate portion 31, thereby preventing the compressive force from concentrating at the joint and improving the strength of the joint. In particular, in the member joining structure 1, the compressive force is transmitted by metal-to-metal contact, so the strength of the joint can be improved with a simple configuration.

[0033] Furthermore, the member joint structure 1 is not limited to joints under bearing walls, which require relatively high strength, but can be used in any joints.

[0034] 2, one end 10a of the pipe member 10 in the second direction is in contact with the first plate portion 21, and the other end 10b of the pipe member 10 in the second direction is in contact with the second plate portion 31. This allows the compressive force to be appropriately transmitted from the first plate portion 21 to the second plate portion 31 via the pipe member 10.

[0035] Furthermore, since the pipe member 10, the first plate portion 21, and the second plate portion 31 are made of steel, the strength of the joints can be improved. Furthermore, by ensuring the strength of the pipe member 10, the first plate portion 21, and the second plate portion 31, compressive force can be appropriately transmitted from the first plate portion 21 to the second plate portion 31 (in other words, from the column C to the foundation F). Furthermore, the pipe member 10, the first plate portion 21, and the second plate portion 31 have simple shapes, which allows for good processing efficiency and allows for easy adaptation to sizes (lengths) according to the specifications of, for example, the base G, the column C, and the foundation F. Furthermore, the pipe member 10, the first plate portion 21, and the second plate portion 31 have simple shapes, which makes it easy to use standardized pipes (steel pipes) and plates (steel plates), and which provides excellent mass productivity and procurement properties.

[0036] Furthermore, in the member joint structure 1, the base G is made of wood. Since sinking is likely to occur in a base G made of wood, the effect of the present invention can be further enhanced. More specifically, when pillars stand on a wooden base, they are likely to sink into the base, and as a result, the load-bearing capacity of the pillars is likely to be restricted in order to prevent this. One possible solution is to divide the base, place metal joints between the divided bases, and then place the pillars on the metal joints. However, with this method, it is not easy to ensure the divided bases are linear, i.e., to align the divided bases on the same straight line. In this regard, the component joint structure 1 suppresses sinking, making it possible to erect pillars on the base G, thereby preventing the above-mentioned problems caused by the divided base.

[0037] Furthermore, the connecting member 20 connects the base G and the column C, and the second plate portion 31 connects the base G and the foundation F. In this way, with the member connecting structure 1, even when connecting the base G, the column C, and the foundation F, the strength of the joint can be improved with a simple configuration. In addition, in the member joint structure 1, the second direction is the vertical direction, and the base G is connected to the column C extending in the vertical direction. Even when the base G and the column C are connected in this manner, the strength of the joint can be improved with a simple configuration.

[0038] <<Other embodiments>> In the above embodiment, an example was given in which the member joint structure was used when connecting a horizontal member (base G) extending horizontally and a vertical member (column C) extending vertically. However, this is not limited to this, and for example, as shown in Fig. 3, the member joint structure of the present invention may be used when connecting horizontal members extending in directions perpendicular to each other in the horizontal direction. The example shown in Figure 3 is an example in which beam B1, which serves as a cross member, is connected to beams B2 and B3, which serve as members perpendicular to the cross member.More specifically, beam B2, which extends in the second direction, is connected to one side in the second direction of beam B1, which extends in the first direction, and beam B3, which extends in the second direction, is connected to the other side in the second direction of beam B1. In the following description, the member joining structure shown in Fig. 3 is referred to as a member joining structure 1A according to Modification 1 of the present invention (hereinafter referred to as member joining structure 1A according to Modification 1). In the example shown in Fig. 3, the first direction and the second direction correspond to the horizontal direction, and the third direction corresponds to the vertical direction.

[0039] 3, in the member joining structure 1A, a joining member 20 is joined to one end surface in the second direction of a beam B1 extending in a first direction, and beams B1 and B2 are connected by the joining member 20. In addition, in the member joining structure 1A, a joining member 60 is joined to the other end surface in the second direction of beam B1, and beams B1 and B3 are connected by the joining member 60. The changes in the component joining structure 1A from the component joining structure 1A according to the above embodiment are that the components to be connected have been changed from the base G, column C and foundation F to beams B1, B2 and B3, and that the second plate portion (hereinafter, second plate portion 61) forms part of the joining member (hereinafter, joining member 60).

[0040] The joining member 60 is joined to the end face of the beam B1 on the beam B3 side in the second direction, and includes a second plate portion 61 and a protruding plate portion 62. The second plate portion 61 corresponds to the second plate portion 31 in the above embodiment, and has the same configuration as the second plate portion 31 except that it does not have holes 31b (see FIG. 1) for inserting the anchor bolts 52, and therefore a description thereof will be omitted. The protruding plate portion 62 protrudes from the second plate portion 61 toward the opposite side to the beam B1 in the second direction, and its configuration is the same as that of the protruding plate portion 22 in the above embodiment, and therefore a description thereof will be omitted. In the member joint structure 1A configured in this manner, similar to the member joint structure 1, the compressive force generated at the joint between beams B1 and B2 can be transmitted from the first plate portion 21 to the pipe member 10, and then from the pipe member 10 to the second plate portion 61. Conversely, the compressive force generated at the joint between beams B1 and B3 can also be transmitted from the second plate portion 61 to the pipe member 10, and then from the pipe member 10 to the first plate portion 21. This prevents the compressive force from concentrating at the joint, and improves the strength of the joint with a simple configuration.

[0041] Furthermore, the member joining structure of the present invention may be used when connecting another base H (another cross member) in addition to a base G, a column C, and a foundation F, as shown in Fig. 4. In the following description, such a member joining structure will be referred to as member joining structure 1B according to modified example 2 of the present invention (hereinafter referred to as member joining structure 1B according to modified example 2). The base H is a cross member extending in a third direction perpendicular to the base G and the pillar C, and is made of wood, for example. The member connection structure 1B differs from the member connection structure 1 according to the above embodiment in that a connecting portion 70 for connecting the base G and the base H is further provided. As shown in FIG. 4, the connecting portion 70 is made up of a connecting member 71 and a plurality of (two) bolts 72. The connecting member 71 is, for example, an approximately U-shaped metal joint, and more specifically, is composed of a rectangular bottom plate that contacts one end face of the base G in the third direction, and a pair of rectangular side plates that rise from both ends of the bottom plate in the first direction.

[0042] The bolt 72 is, for example, a headed bolt, and is inserted into a hole that penetrates from one side to the other of the side surfaces aligned in the third direction and formed in the base G, and its tip is screwed into a screw hole that is formed in the bottom plate of the connecting member 71 and that is aligned in the third direction. This fixes the connecting member 71 to the base G. Furthermore, slits extending in the third direction are formed on the end surface of the base H facing the base G in the third direction, into which each of the pair of side plates of the connecting member 71 can be inserted. Furthermore, the pair of side plates and the base H are each provided with a hole that penetrates in the first direction, and the pair of side plates of the connecting member 71 are inserted into the slits of the base H, and with the aforementioned through holes aligned, a pin (not shown) is inserted into those holes, thereby fixing the connecting member 71 and the base H together.

[0043] In the member joining structure 1B according to the second modification, as shown in Fig. 4, the first through hole 21a of the first plate portion 21 is provided at a position that avoids the connecting portion 70 when the first plate portion 21 is viewed in a plan view (when viewed from the second direction), and in the example shown in Fig. 4, at a position that avoids the bolt 72 that extends along the third direction. In other words, the bolt 41 that is inserted in the second direction and the bolt 72 that extends along the third direction are inserted into the base G at positions inside the base G where they do not interfere with each other. In this way, in the component joining structure 1B relating to variant example 2, even when a cross member (foundation G) is connected to another cross member (foundation H) by the connecting portion 70, interference between the bolt 41 inserted into the first through hole 21a of the first plate portion 21 and the connecting portion 70 can be avoided.

[0044] Furthermore, in the above embodiment, an example was given in which there are four bolts 41 in terms of the number of bolts 41, but this is not limited to this, and for example, there may be one bolt 41 or a number of bolts 41 other than four.

[0045] Furthermore, in the above embodiment, it is assumed that the cross members (foundations G) are made of wood, but this is not limitative and they may be made of, for example, metal or the like. [Explanation of symbols]

[0046] 1A, 1B Member joint structure 10 Pipe members 10a one end 10b other end 20,60 Joint members 21 First plate section 21a 1st through hole 22,62 Protruding plate part 22a,31b,Gc hole 31,61 Second plate section 31a,61a 2nd through hole 41.72 volts 51 Gasket 52 anchor bolt 70 Connection part 71 Connecting member B1,B2,B3 Beam C pillar F Basics G,H base Ga one end face Gb Other end surface Gd recessed part

Claims

1. A member joining structure for joining a joining member to one end surface of a cross member extending in a predetermined direction in a cross direction intersecting the predetermined direction, a pipe member inserted into a hole penetrating the cross member in the cross direction; a first plate portion provided in the joining member and having a first through hole formed in the intersecting direction; a second plate portion that is in contact with the cross member on the opposite side of the first plate portion in the cross direction and has a second through hole formed in the cross direction; A member joining structure having a bolt inserted into the first through hole, the interior of the pipe member, and the second through hole, in a state in which the first plate portion contacts one end face of the cross member in the transverse direction at a position where the first through hole and the interior of the pipe member are connected, and the second plate portion contacts the other end face of the cross member in the transverse direction at a position where the second through hole and the interior of the pipe member are connected.

2. one end of the pipe member in the crossing direction is in contact with the first plate portion, The member joining structure according to claim 1 , wherein the other end of the pipe member in the cross direction is in contact with the second plate portion.

3. The member joining structure according to claim 1 , wherein the pipe member is made of steel.

4. The member joining structure according to claim 1 , wherein the first plate portion and the second plate portion are made of steel.

5. The member joint structure according to claim 1 , wherein the cross member is made of wood.

6. The connecting member connects the cross member to a member perpendicular to the cross member that contacts the connecting member on the opposite side of the cross member in the cross direction, The member joining structure according to claim 1 , wherein the second plate portion connects the cross member and a member that contacts the second plate portion on the opposite side of the cross member in the intersecting direction.

7. Further, a connecting portion for connecting the cross member to another cross member is provided, The member joining structure according to claim 1 , wherein the first through hole of the first plate portion is provided at a position that avoids the connecting portion when the first plate portion is viewed in a plan view.

8. The member joining structure according to claim 1 , wherein the intersecting direction is a vertical direction.

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