Member joining structure

Abstract

To provide a member joining structure capable of improving resistance to compression.SOLUTION: A member joining structure 1 is a member joining structure in which a first member 10 extending in a first direction is abutted against one end 21 of a wooden second member 20 extending in a second direction intersecting the first direction, thereby rigidly joining the first member 10 and the second member 20. The member joining structure 1 includes a convex member 30 fixed to an end face 11 of the first member 10 in the second direction, a bolt 41 extending in the second direction and fastening the convex member 30 and the second member 20 together, an engaging member 51 inserted into the second member 20 and having an engaging hole 51a that engages with an end 41a of the bolt 41 on the opposite side from the convex member 30, and a first pin 61 inserted into the second member 20 and adjacent to the engaging member 51 on the opposite side from the convex member 30 in the second direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a member joining structure, and more particularly to a member joining structure for joining two members. [Background technology]

[0002] Techniques for joining two members have already been developed, and the technique described in Patent Document 1 is one example. The joining structure described in Patent Document 1 rigidly joins two wooden members by inserting a bolt between one of the two wooden members while the end face of the other wooden member is butted against the other wooden member. A notch is formed in the other wooden member, and one end of the bolt protrudes into the space within the notch, and a washer placed in the notch is screwed onto the one end. [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 one member rotates, a bending moment corresponding to the rotation acts on the other member. More specifically, a tensile force acts on one side of the other member from one member, and a compressive force acts on the other side from the one member, based on the neutral plane (central axis) of the other member. The tension acting on the other member is distributed within the other member via a washer threaded onto one end of the bolt. On the other hand, the compressive force acting on the other member is concentrated only on the end face where it abuts against one of the members, which can cause the end face to sink into the other member. As a result, there is a risk that the expected effect of the joining structure of the members will not be fully achieved.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a member joining structure that can improve resistance to compression. [Means for solving the problem]

[0006] The above object is achieved by the component joining structure of the present invention, which rigidly joins a first member extending in a first direction with one end of a second wooden member extending in a second direction intersecting the first direction, and which comprises: a convex member fixed to the end face of the first member in the second direction; a bolt extending in the second direction and fastening the convex member to the second member; an engaging member inserted into the second member and having an engaging hole that engages with the end of the bolt on the opposite side from the convex member in the second direction; and a first pin inserted into the second member and adjacent to the engaging member on the opposite side from the convex member in the second direction.

[0007] In the member joining structure of the present invention, the compressive force acting on the second member is transmitted from the first member to the engaging member and the first pin, and is dispersed to the second member from the surfaces of the engaging member and the first pin. This prevents the compressive force from concentrating on the end face of the second member that abuts against the first member, thereby improving resistance to compression.

[0008] The member joining structure may further have a compression force transmission member through which the bolt is inserted, and one end of the compression force transmission member in the second direction may be in contact with the convex member, and the other end of the compression force transmission member in the second direction may be in contact with the engaging member. With the above-described configuration, the compressive force can be appropriately transmitted from the convex member to the engaging member via the compressive force transmission member, thereby further improving the resistance to compression.

[0009] The engaging member may extend in a third direction intersecting the first and second directions, and the first pin may extend in the first direction. With the above configuration, the compressive force can be dispersed over a wider range of the second member in a direction intersecting the extension direction of the second member.

[0010] The member joining structure may further include a second pin that is inserted into the second member and is adjacent to the engaging member on the convex member side in the second direction. With the above configuration, the tensile force acting on the second member is transmitted from the first member to the engaging member and the second pin, and is dispersed to the second member from the surfaces of the engaging member and the second pin, thereby suppressing local concentration of the tensile force on the second member.

[0011] The member joint structure may further include a recess formed at one end of the second member in the second direction, into which the convex member fits. With the above configuration, the convex member fits into the concave member, and thus the distance between the first member and the second member can be reduced in the second direction by an amount equivalent to the thickness of the convex member.

[0012] The convex member may also have a first fixing plate fixed to the end face of the first member in the second direction, a second fixing plate fixed to the bottom face of the recess, and a connecting plate connecting the first fixing plate and the second fixing plate. With the above configuration, the convex member can have a simple configuration.

[0013] The convex member may also be made of metal. With the above configuration, the rigidity of the convex member is improved, so that the compressive force acting on the second member can be appropriately transmitted to the engaging member and the first pin. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a member joining structure that can improve resistance to compression. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing a member joining structure according to one embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] 6A and 6B are diagrams for explaining transmission paths of compressive and tensile forces acting on the second member. [Figure 4] FIG. 10 is a front view showing a member joining structure according to a first modified example of the present invention. [Figure 5] FIG. 5 is a cross-sectional view taken along line BB in FIG. [Figure 6] FIG. 10 is a front view showing a member joining structure according to a second modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] 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.

[0017] 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. Furthermore, in this specification, of the three mutually perpendicular directions, the direction in which the first member 10 (see Figure 1) described later extends is referred to as the "first direction," the direction in which the second member 20 (see Figure 1) described later extends is referred to as the "second direction," and the direction in which the engaging member 51 (see Figure 2) described later extends is referred to as the "third direction."

[0018] <<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 first member 10 corresponds to a "beam" extending in a first direction (horizontal direction), and the second member 20 corresponds to a "column" extending in a second direction (vertical direction or up-down direction) perpendicular to the first direction. In addition, in this embodiment, the member joint structure 1 is such that the upper end portion (one end portion 21) of the second member 20 abuts against the lower end surface (end surface 11) of the first member 10, rigidly joining the first member 10 and the second member 20, resulting in a so-called beam-first structure. In this embodiment, the first member 10 and the second member 20 are both made of wood.

[0019] As shown in FIG. 1, the member joining structure 1 has two recesses 22, two convex members 30, two bolts 41, two engaging members 51, four first pins 61 (see FIGS. 1 and 2), four second pins 62 (see FIGS. 1 and 2), and two compression force transmission members 71.

[0020] 1, the recesses 22 are formed in one end 21 of the second member 20 on the first member 10 side in the second direction, and are located at both ends of the one end 21 in the first direction. The recesses 22 are formed, for example, by notching corners of the one end 21. The recesses 22 are recessed in the second direction further away from the first member 10 than the end face 21a of the second member 20 on the first member 10 side so that a convex member 30 (described later) can fit into them. A second fixing plate 32 (described later) of the convex member 30 is fixed to the recessed bottom surface 22a of the recess 22.

[0021] The convex member 30 fits into the recess 22 and is fixed to the end surface 11 of the first member 10 on the second member 20 side in the second direction. More specifically, as shown in FIG. 1 , the convex member 30 is composed of a first fixing plate 31, a second fixing plate 32, and a connecting plate 33. The convex member 30 is made of, for example, metal, and each of the first fixing plate 31, the second fixing plate 32, and the connecting plate 33 has, for example, a rectangular shape in a plan view. Note that "plan view" means that each of the plates 31, 32, and 33 is viewed from a direction perpendicular to its main surface (widest surface).

[0022] The first fixing plate 31 is fixed to an end surface 11 of the first member 10 on the second member 20 side in the second direction. More specifically, the first fixing plate 31 and the first member 10 are each provided with a hole along the second direction through which a bolt 81 is inserted. The first fixing plate 31 is placed on the end surface 11, and with the above-mentioned holes aligned, the bolt 81 is inserted into those holes and a nut is screwed onto the end of the bolt 81 on the convex member 30 side, thereby fixing the first fixing plate 31 to the end surface 11 of the first member 10. The second fixing plate 32 is fixed to the bottom surface 22a of the recess 22. More specifically, the second fixing plate 32 and the second member 20 are each provided with a hole along the second direction through which a bolt 41, which will be described later, is inserted. The second fixing plate 32 is placed on the bottom surface 22a, and with the above-mentioned holes aligned, the bolt 41 is inserted into those holes and a nut 42 is screwed onto the end of the bolt 41 on the convex member 30 side, thereby fixing the second fixing plate 32 to the bottom surface 22a of the recess 22. The connecting plate 33 extends in the second direction and connects the first fixed plate 31 and the second fixed plate 32. More specifically, the connecting plate 33 connects the end of the first fixed plate 31 that is closer to the central axis of the second member 20, of both end portions in the first direction, to the end of the second fixed plate 32 that is closer to the central axis of the second member 20, of both end portions in the first direction.

[0023] The bolt 41 extends in the second direction and fastens the convex member 30 and the second member 20 together. More specifically, as described above, the second fixing plate 32 of the convex member 30 and the second member 20 are provided with holes along the second direction through which the bolt 41 is inserted. The bolt 41 is inserted into these holes and a nut 42 is screwed onto the end of the bolt 41 on the convex member 30 side, thereby fastening the convex member 30 and the second member 20 together. The bolt 41 is, for example, a bolt with threads formed on both ends thereof.

[0024] The engaging member 51 engages with the end 41 a of the bolt 41 on the opposite side to the convex member 30 . The engaging member 51 is inserted into the second member 20, and more specifically, as shown in Fig. 3, is inserted into an insertion hole along the third direction that is provided on a side surface of the second member 20 that is perpendicular to the third direction. The engaging member 51 extends in the third direction when inserted into the second member 20. The engaging member 51 is, for example, a cylindrical metal pin, and its cross-sectional shape perpendicular to the direction of extension is assumed to be, for example, circular, but may be rectangular, polygonal, or the like. Furthermore, when the engaging member 51 is a cylindrical pin, the cross-sectional shape of the insertion hole of the engaging member 51 is circular, which improves the processing efficiency of the insertion hole in the second member 20 compared to when the cross-sectional shape is rectangular, for example. The engaging member 51 has an engaging hole 51a that engages with the end 41a of the bolt 41 on the opposite side from the convex member 30. The engaging hole 51a is a hole along the second direction, and more specifically, a thread is formed on the edge surface of the hole so that the end 41a of the bolt 41 can be screwed onto the engaging hole 51a.

[0025] In order to engage the engagement hole 51a with the end 41a of the bolt 41, the orientation of the engagement hole 51a needs to be directed toward the end 41a of the bolt 41 (upper side in FIG. 1). More specifically, with the engagement member 51 inserted into the second member 20, the engagement member 51 needs to be rotated along the central axis of the engagement member 51 to adjust the orientation of the engagement hole 51a in the rotation direction to be upward. Furthermore, a groove having a shape corresponding to the shape of the tip of a tool such as a screwdriver or hex wrench may be formed on one end surface in the extending direction (third direction) of engaging member 51. By inserting the tip of the tool into the groove and rotating engaging member 51 along the central axis, engaging hole 51a can be easily oriented toward end 41a of bolt 41 (upper side in FIG. 1).

[0026] The first pins 61 are adjacent to the engaging member 51 on the opposite side (lower side) from the convex member 30 in the second direction. More specifically, two first pins 61 are adjacent to one engaging member 51, and the two first pins 61 are located on both sides of the bolt 41 in the third direction, as shown in FIG. 2 . The state in which the first pin 61 is adjacent to the engaging member 51 means that the first pin 61 and the engaging member 51 are in contact with each other. Of course, when no compressive force is acting on the second member 20, the first pin 61 and the engaging member 51 do not necessarily have to be in contact with each other, but when a compressive force is acting on the second member 20, the first pin 61 and the engaging member 51 are in contact with each other.

[0027] The first pin 61 is inserted into the second member 20, more specifically, into an insertion hole that is provided along the first direction on a side surface of the second member 20 that is perpendicular to the first direction. The first pin 61 extends in the first direction when inserted into the second member 20. As described above, the engaging member 51 extends in the third direction, and the first pin 61 extends in the first direction. For this reason, it can be said that the first pin 61 and the engaging member 51 extend in directions that are orthogonal (intersect) with each other. In this embodiment, of the four first pins 61, two first pins 61 are inserted from one of the two side surfaces aligned in the first direction of the second member 20, and the remaining two first pins 61 are inserted from the other side surface. The first pin 61 is, for example, a cylindrical pin made of metal, and the cross-sectional shape of the first pin 61 perpendicular to the extending direction is assumed to be circular, but may be rectangular, polygonal, or the like. Furthermore, the shape of the circumferential surface of the first pin 61 is not particularly limited. For example, the circumferential surface of the first pin 61 may be either a smooth circumferential surface without irregularities or a circumferential surface having irregularities. An example of a circumferential surface having irregularities is a circumferential surface on which a (low) screw thread is formed by thread cutting. In this case, by rotating the first pin 61 around the central axis of the first pin 61, the first pin 61 moves toward the second member 20.

[0028] The second pin 62 is adjacent to the engaging member 51 on the convex member 30 side (upper side) in the second direction. More specifically, two second pins 62 are adjacent to one engaging member 51, and the two second pins 62 are located on both sides of the bolt 41 in the third direction, as shown in FIG. 2 . The state in which the second pin 62 is adjacent to the engaging member 51 means that the second pin 62 and the engaging member 51 are in contact with each other. Of course, when no tensile force is acting on the second member 20, the second pin 62 and the engaging member 51 do not necessarily have to be in contact with each other, but when a tensile force is acting on the second member 20, the second pin 62 and the engaging member 51 are in contact with each other.

[0029] The second pin 62 is inserted into the second member 20, more specifically, into an insertion hole provided in a side surface of the second member 20 perpendicular to the first direction. When inserted into the second member 20, the second pin 62 extends in the first direction. As described above, the engaging member 51 extends in the third direction, and the second pin 62 extends in the first direction. Therefore, it can be said that the second pin 62 and the engaging member 51 extend in directions that are perpendicular (intersect) with each other. Furthermore, as described above, the first pin 61 extends in the first direction, so it can be said that the first pin 61 and the second pin 62 extend in the same direction. In this embodiment, of the four second pins 62, two second pins 62 are inserted from one of the two side surfaces aligned in the first direction of the second member 20, and the remaining two second pins 62 are inserted from the other side surface. The second pin 62 is, for example, a pin made of metal, and the cross-sectional shape of the second pin 62 perpendicular to the extending direction is assumed to be circular, but may be rectangular, polygonal, or the like. As with the first pin 61, the shape of the peripheral surface of the second pin 62 is not particularly limited, and for example, the peripheral surface of the second pin 62 may be either a smooth peripheral surface without any irregularities, or a peripheral surface with irregularities.

[0030] The compression force transmission member 71 is a member through which the bolt 41 is inserted, and is, for example, a cylindrical (tubular) member made of metal, and is inserted together with the bolt 41 into a hole along the second direction through which the bolt 41 is inserted, which is provided in the second member 20. A gap may be provided between the compression force transmission member 71 and the bolt 41, but the smaller the gap, the more the compression force transmission member 71 can suppress buckling of the bolt 41. 2, one end 71a of the compression force transmission member 71 in the second direction contacts the convex member 30, more specifically, the lower surface of the second fixed plate 32. The other end 71b of the compression force transmission member 71 in the second direction contacts the engaging member 51, more specifically, the upper end of the engaging member 51. Note that one end 71a of the compression force transmission member 71 does not necessarily have to contact the convex member 30 when no compressive force is acting on the second member 20, but will contact the convex member 30 when a compressive force is acting on the second member 20. Similarly, the other end 71b of the compression force transmission member 71 does not necessarily have to contact the engaging member 51 when no compressive force is acting on the second member 20, but will contact the engaging member 51 when a compressive force is acting on the second member 20. The cross-sectional shape of the compression force transmission member 71 perpendicular to the extension direction is assumed to be circular, but it may also be rectangular, polygonal, etc., or may be a partially open shape such as C-shape or U-shape.

[0031] <<Operation and Effects of the Member Joining Structure According to the Present Embodiment>> Next, the operation and effect of the member joining structure 1 will be described with reference to FIG. In the example shown in FIG. 3, it is assumed that the first member 10 rotates clockwise around an imaginary rotation axis along the third direction when viewed from the front side of the paper surface of FIG. When the first member 10 rotates, a bending moment corresponding to the rotation acts on the second member 20. In the example shown in Fig. 3, with respect to the neutral plane of the second member 20, specifically, the central axis of the second member 20 along the second direction, a compressive force from the first member 10 acts on the right side of the second member 20 in the first direction in Fig. 3, and a tensile force from the first member 10 acts on the left side of the second member 20 in the first direction in Fig. 3.

[0032] The compressive force acting on the second member 20 is transmitted from the first member 10 to the convex member 30. More specifically, the compressive force is transmitted in the order of the first fixing plate 31, the connecting plate 33, and the second fixing plate 32 of the convex member 30. The compressive force is then transmitted from one end 71a of the compressive force transmission member 71, which is in contact with the lower surface of the second fixing plate 32, to the compressive force transmission member 71, and from the other end 71b of the compressive force transmission member 71 to the upper end of the engaging member 51. The compressive force is then transmitted from the engaging member 51 to the first pin 61, which is in contact with the engaging member 51. As a result, the compressive force is dispersed to the second member 20 from the surfaces of the engaging member 51 and the first pin 61, particularly from the lower regions of those surfaces (the opposite sides of the convex member 30 in the second direction). In this way, in the member joint structure 1, the compressive force can be transmitted from the convex member 30 to the first pin 61 in a so-called metal-to-metal manner.

[0033] On the other hand, the tensile force acting on the second member 20 is transmitted from the first member 10 to the convex member 30, more specifically, through the first fixing plate 31, connecting plate 33, and second fixing plate 32 of the convex member 30 in that order. The tensile force is then transmitted from the second fixing plate 32 to the nut 42 in contact with the second fixing plate 32, and then to the bolt 41 threaded onto the nut 42. The tensile force is further transmitted from the bolt 41 to the engaging member 51 that engages (threaded onto) the end 41a of the bolt 41, and from the engaging member 51 to the second pin 62 that contacts the engaging member 51. As a result, the tensile force is dispersed to the second member 20 from the surfaces of the engaging member 51 and the second pin 62, particularly from the upper regions of those surfaces (toward the convex member 30 in the second direction).

[0034] As explained above, in the member joining structure 1, the compressive force acting on the second member 20 is transmitted from the first member 10 to the engaging member 51 and the first pin 61, and is dispersed from the surfaces of the engaging member 51 and the first pin 61 to the second member 20. This prevents the compressive force from concentrating (increasing the bearing pressure) on the end face 21a of the second member 20 that abuts against the first member 10, and can improve the resistance to compression (resistance to sinking).

[0035] Furthermore, since the engaging member 51 extends in the third direction and the first pin 61 extends in the first direction, the compressive force can be distributed over a wider area of ​​the second member 20 in a direction intersecting the extension direction of the second member 20.

[0036] The member joining structure 1 also has a second pin 62 that is inserted into the second member 20 and is adjacent to the engaging member 51 on the convex member 30 side in the second direction. As a result, the tensile force acting on the second member 20 is transmitted from the first member 10 to the engaging member 51 and the second pin 62, and is dispersed from the surfaces of the engaging member 51 and the second pin 62 to the second member 20. Therefore, local concentration of tensile force on the second member 20 can be further suppressed.

[0037] Furthermore, the member joining structure 1 has a recess 22 formed at one end 21 of the second member 20 in the second direction, into which the convex member 30 fits. As a result, by having the convex member 30 fit into the recess 22, the distance between the first member 10 and the second member 20 in the second direction can be reduced by an amount equivalent to the thickness of the convex member 30.

[0038] Furthermore, the convex member 30 has a first fixed plate 31 fixed to the end surface 11 of the first member 10 in the second direction, a second fixed plate 32 fixed to the bottom surface 22a of the recess 22, and a second fixed plate 32 connecting the first fixed plate 31 and the second fixed plate 32. This allows the convex member 30 to have a simple configuration. Furthermore, since the convex member 30 is made of metal, the rigidity of the convex member 30 is improved, and therefore the compressive force acting on the second member 20 can be transmitted to the engaging member 51 and the first pin 61 appropriately.

[0039] <<Other embodiments>> In the above embodiment, the member joining structure 1 has been described on the assumption that a first member 10 and a second member 20, which are so-called beam-type members, are rigidly joined. However, this is not limited to this, and for example, as shown in Figures 4 and 5, a member joining structure 1A may be used in which a first member 10A and a second member 20B, which are so-called column-type members, are rigidly joined. In this case, the first member 10A corresponds to a "column" extending in a first direction (vertical or up-down direction), and the second member 20A corresponds to a "beam" extending in a second direction (horizontal direction). As shown in FIG. 4, the member joint structure 1A may have a beam receiving member 82 for receiving the beam (second member 20) between two convex members 30 positioned apart in the first direction. Specifically, the beam support member 82 is, for example, a metal member. As shown in FIG. 5 , the beam support member 82 is composed of a rectangular bottom plate fixed to the end surface 11 of the first member 10A with bolts (not shown) and a pair of rectangular side plates extending from both ends of the bottom plate in the third direction. The second member 20 has slits extending in the second direction into which the pair of side plates can be inserted. The pair of side plates and the second member 20 have holes penetrating in the third direction at corresponding positions. The beam support member 82 and the second member 20 can be fixed together by inserting a third pin 83 into the holes. The third pin 83 is, for example, a cylindrical metal pin. The cross-sectional shape of the third pin 83 perpendicular to the extending direction is assumed to be circular, but may be rectangular, polygonal, or the like.

[0040] In addition, although the above embodiment has been described assuming a case where a beam and a column are rigidly joined, the present invention is not limited to this and can be applied to any case where two members used in a building are rigidly joined. For example, the member joining structure may be a member joining structure 1B that rigidly joins a "base (foundation)" as a first member 10B and a "column" as a second member 20B, as shown in Fig. 6. Furthermore, the second member 20B does not need to have a recess 22 (notch), and for example, the convex member 30 may be fixed to the end face 11 of the first member 10B on the second member 20B side in the second direction and the end face 21a of the second member 20B on the first member 10 side in the second direction, as shown in Figure 6.

[0041] In addition, in the above embodiment, the first direction corresponds to the vertical direction and the second direction corresponds to the horizontal direction, but this is not limited thereto, and for example, both the first direction and the second direction may be horizontal. In this case, the first member may be a "beam" extending in the first direction (horizontal direction), and the second member may be a "beam" extending in the second direction (horizontal direction) perpendicular to the first direction.

[0042] In addition, in the above embodiment, the recesses 22 are located at both ends of the one end 21 in the first direction, but this is not limited to this, and for example, one recess may be formed in the center in the first direction.

[0043] Furthermore, in the above embodiment, the first member 10 is described as being made of wood, but this is not limiting, and for example, the first member may be a member made of metal.

[0044] 1 and 2, the first pin 61 and the engaging member 51 extend in directions perpendicular to each other, but this is not limiting, and they may extend in directions intersecting each other other than the directions perpendicular to each other, or may even extend in the same direction. The same applies to the second pin 62 and the engaging member 51. Furthermore, in the above embodiment, the first pin 61 and the second pin 62 extend in the same direction, but this is not limitative, and for example, they may extend in directions that intersect (orthogonal to) each other.

[0045] In the above embodiment, the member joining structure 1 has four first pins 61, but is not limited to this and may have, for example, one or more first pins 61. The same applies to the number of second pins 62.

[0046] Furthermore, in the above embodiment, the component joining structure 1 has both the first pin 61 and the second pin 62, but this is not limited to this, and it may have the first pin 61 but not the second pin 62.

[0047] Furthermore, in the above embodiment, the nut 42 is only in contact with the second fixed plate 32, but this is not limiting, and for example, the nut 42 and the second fixed plate 32 may be joined by welding. This allows the compressive force to be transmitted from the second fixed plate 32 to the nut 42, from the nut 42 to the bolt 41, and further from the bolt 41 to the engaging member 51. Furthermore, in the member joining structure, a nut (not shown) that screws onto the bolt 41 may be disposed on the underside of the second fixing plate 32 (the surface of the second fixing plate 32 opposite to the nut 42). This allows the compressive force to be transmitted from the second fixing plate 32 to the nut on the underside of the second fixing plate 32, from the nut to the bolt 41, and further from the bolt 41 to the engaging member 51. [Explanation of symbols]

[0048] 1, 1A, 1B Member joint structure 10, 10A, 10B First member 11,21a End face 20, 20A, 20B Second member 21 One end 22 recess 22a Bottom 30 Convex member 31 1st fixed plate 32 Second fixing plate 33 Connecting plate 41.81 volts 41a End 42 Nut 51 Engagement member 51a Engagement hole 61 First pin 62 2nd pin 71 Compression force transmission member 71a one end 71b other end 82 Beam support member 83 Third pin

Claims

1. A member joining structure in which one end of a wooden second member extending in a second direction intersecting with a first member extending in a first direction is abutted against the first member, rigidly joining the first member and the second member, a convex member fixed to an end surface of the first member in the second direction; a bolt extending in the second direction and fastening the convex member and the second member together; an engaging member that is inserted into the second member and has an engaging hole that engages with an end of the bolt on the opposite side from the convex member; A member joining structure having a first pin that is inserted into the second member and adjacent to the engaging member on the opposite side to the convex member in the second direction.

2. The bolt further includes a compression force transmission member through which the bolt is inserted. one end of the compression force transmission member in the second direction is in contact with the convex member, The member joining structure according to claim 1 , wherein the other end of the compression force transmission member in the second direction is in contact with the engaging member.

3. the engaging member extends in a third direction intersecting the first direction and the second direction, The member joining structure according to claim 1 , wherein the first pin extends in the first direction.

4. The member joining structure according to claim 1 , further comprising a second pin inserted into the second member and adjacent to the engaging member on the side of the convex member in the second direction.

5. The member joining structure according to claim 1 , further comprising a recess formed at the one end of the second member in the second direction, into which the convex member fits.

6. The convex member is a first fixing plate fixed to the end surface of the first member in the second direction; a second fixing plate fixed to a bottom surface of the recess; The member joining structure according to claim 5 , further comprising a connecting plate that connects the first fixing plate and the second fixing plate.

7. The member joining structure according to claim 1 , wherein the convex member is made of metal.

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