Connection member and wooden structure

Abstract

To provide a joint metal that can avoid concentration of shear force to a bolt and reduce a partial loss of area of a wooden member, and a wooden structure using the same.SOLUTION: A connection member 2 connecting between wooden members 30 or the wooden member 30 and a steel member or a concrete member has: a plate portion 20 to come into intimate contact with a side surface of the wooden member 30; and protruded portions 21 protruding from the plate portion 20 and inserting into a recess 32 formed at the side surface of the wooden member 30. A surface of the protruded portion 21 may contact to an inner surface of the recess 32, or a cap member 60 is mounted to the protruded portion 21 and a surface of the cap member 60 may contact to the inner surface of the recess 32.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a connecting member for connecting wooden members to each other, or to a wooden member and a steel member or a concrete member, and further to a wooden structure in which the connecting member is used to connect wooden members to each other, or to a wooden member and a steel member or a concrete member. [Background technology]

[0002] A conventional technology for joining steel members and wooden members is disclosed in Japanese Patent Application No. 2006-2556 (hereinafter referred to as the "prior application technology"). The prior application technology aims to provide a composite member made of steel members and wooden members, a joining structure between a wooden member and a steel plate, a joining method between a wooden member and a steel plate, and a structure equipped with a joining structure between a wooden member and a steel plate, which can ensure contact pressure between the bottom surface of a friction shear member and the joining steel plate, and which is highly durable and prevents slippage due to shear force between the steel member and the wooden member.

[0003] The prior art is configured as follows: a plurality of wooden members or laminated lumber are fixed to at least one steel member with fastening bolts, the wooden members or laminated lumber are arranged on the surface side; each wooden member or laminated lumber is provided with at least one circular through-hole with the same inner diameter in the hole axial direction at least in the portion where the shear member is to be arranged; shear members having an outer diameter that is the same as or slightly larger than the inner diameter of the through-hole and the same outer diameter over the entire axial length are arranged in the through-hole and are arranged in contact with the steel member; a presser member is arranged on the outside of the shear member arranged in the through-hole in the wooden member or laminated lumber arranged on the surface side; the shear members are pressed and friction-bonded to the steel member by the tightening force of the steel member, each shear member, and fastening bolts inserted and arranged in the bolt insertion holes of each presser member; and the wooden member or laminated lumber on the surface side is prevented from coming off by the presser members. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Application No. 2006-2556 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the prior art is configured such that shear force (the force that resists lateral displacement between the steel member and the wooden member) is concentrated on the bolt, which may damage the bolt, necessitating the bolt being made thicker. Furthermore, because the shear member is installed by penetrating the wooden member, a through hole of the same diameter as the shear member must be formed in the wooden member. This results in significant loss of cross-sectional area of ​​the wooden member around the through hole, making it necessary to increase the cross-section of the wooden member itself. Furthermore, with the prior art, if the bolt (nut) loosens, the necessary frictional force cannot be obtained, which may result in shear force being concentrated on the bolt.

[0006] The present invention aims to provide a metal joint that can avoid the concentration of shear force on a bolt and minimize cross-sectional loss in wooden members, and a wooden structure that uses the same. [Means for solving the problem]

[0007] According to the present invention, there is provided a connecting member for connecting wooden members to each other, or a wooden member to a steel member or a concrete member, which has a plate portion that is in close contact with the side of the wooden member, and a protruding portion that protrudes from the plate portion and is inserted into a recess formed in the side of the wooden member.

[0008] The surface of the protruding portion may contact the inner surface of the recessed portion. Alternatively, a cap member may be attached to the protruding portion, and the surface of the cap member may contact the inner surface of the recessed portion. Alternatively, the protruding portion may be formed by burring. Alternatively, the protruding portion may be formed by step-punching.

[0009] Furthermore, according to the present invention, there is provided a wooden structure in which the above-mentioned connecting member is used to connect wooden members to each other, or to connect wooden members to steel members or concrete members. [Effects of the Invention]

[0010] According to the present invention, by bringing the surface of the protrusion provided on the plate portion of the connecting member, or the surface of the cap member attached to the protrusion, into contact with the inner surface of the recess formed in the side of the wooden member, the force resisting the shear force generated between the connecting member and the wooden member can be supported between the surface of the protrusion and the inner surface of the recess in the wooden member, or between the surface of the cap member and the inner surface of the recess in the wooden member, thereby preventing the shear force from concentrating on the bolt.Furthermore, according to the present invention, since the recess formed in the side of the wooden member does not penetrate the wooden member, cross-sectional loss of the wooden member can be kept small, and it is possible to avoid making the cross-sectional area of ​​the wooden member larger than necessary. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is an explanatory diagram of a wooden structure according to an embodiment of the present invention applied to a truss structure. FIG. [Figure 2] FIG. 1 is an explanatory diagram of a wooden structure according to an embodiment of the present invention applied to a brace structure. [Figure 3] FIG. 1 is an explanatory diagram showing an exploded view of a connecting member and a wooden member according to a first embodiment of the present invention, in which protruding portions are formed by burring. [Figure 4] FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, showing the left half of the wooden member. [Figure 5] FIG. 10 is an explanatory diagram showing an exploded view of a connecting member and a wooden member according to a second embodiment of the present invention, in which the protruding portions are formed by step-punching. [Figure 6] FIG. 10 is an explanatory diagram showing an exploded view of a connecting member and a wooden member according to a third embodiment of the present invention, illustrating an example in which a cap member is attached to a protrusion formed by burring. [Figure 7] FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6, showing the left half of the wooden member. [Figure 8]FIG. 10 is an explanatory diagram showing an exploded view of a connecting member and a wooden member according to a fourth embodiment of the present invention, illustrating an example in which a cap member is attached to a protrusion formed by step-punching. [Figure 9] FIG. 10 is a cross-sectional view of a fifth embodiment of the present invention in which a steel member is attached to only one side of a wooden member, showing the left half of the wooden member. [Figure 10] 10A and 10B are explanatory diagrams of modified examples of the cap member. [Figure 11] 10A and 10B are explanatory diagrams of modified examples of the cap member having a quadrangular prism shape. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification and the drawings, elements having substantially the same functional configurations are designated by the same reference numerals, and redundant description will be omitted.

[0013] As shown in Fig. 1, a wooden structure 1 according to an embodiment of the present invention is applied to, for example, a truss structure. In the example shown in Fig. 1, truss members 12, which are wooden members, are alternately and diagonally arranged between upper main girders 10 and lower main girders 11, which are made of either wooden members, steel members, or concrete members, using connecting members 2.

[0014] Furthermore, as shown in Fig. 2, a wooden structure 1 according to an embodiment of the present invention is applied to, for example, a braced structure. In the example shown in Fig. 2, brace members 16, which are wooden members, are arranged diagonally inside a rectangular framework 15 made of wooden members, steel members, or concrete members using connecting members 2.

[0015] (First embodiment) 3 and 4, the connecting member 2 according to the first embodiment of the present invention has protruding portions 21 protruding from a plate portion 20 made of a steel plate. In the example shown in Fig. 3, two plate portions 20 are stacked one on top of the other and bonded together, with the upper plate portion 20 provided with a hollow, cylindrical protruding portion 21 that protrudes upward, and the lower plate portion 20 provided with a hollow, cylindrical protruding portion 21 that protrudes downward at the same position as the upper protruding portion 21. These protruding portions 21 are formed, for example, by burring the plate portions 20 before bonding the two plate portions 20 together.

[0016] In this embodiment, the wooden member 30 is made of plywood made up of multiple wooden boards 31 (four in the illustrated example). Furthermore, wooden members 30 are arranged above and below the connecting member 2. In other words, the connecting member 2 is arranged between the two upper and lower wooden members 30. Furthermore, in this embodiment, connecting members 2 are arranged on both the left and right ends of the two upper and lower wooden members 30. Fig. 4 shows only the connecting member 2 arranged at the left end of the two upper and lower wooden members 30.

[0017] In each connecting member 2, the protruding portion 21 is located on one end of the horizontally elongated plate portion 20 (the right end of the left plate portion 20 and the left end of the right plate portion 20 in FIG. 3 ). When each connecting member 2 is sandwiched between the upper and lower wooden members 30, the other end of the plate portion 20 (the left end of the left plate portion 20 and the right end of the right plate portion 20 in FIG. 3 ) protrudes from both ends of the wooden members 30. Although not shown in FIGS. 3 and 4 , the other ends of these plate portions 20 are connected to other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in FIG. 1 and the framework 15 shown in FIG. 2 . In other words, the wooden members 30 are connected to other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in FIG. 1 and the framework 15 shown in FIG. 2 , via the connecting members 2.

[0018] The connection between the connecting member 2 and other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in Fig. 1 and the framework 15 shown in Fig. 2, may be the same as the connection between the connecting member 2 and the wooden member 30, or in the case of connection with other steel members, a method of welding the other end of the plate portion 20 to the steel member may be used. The plate portion 20 of the connecting member 2 may also be a bracket fixed to another wooden member, steel member, or concrete member.

[0019] In the wooden member 30, a recess 32 into which the protrusion 21 formed on the connecting member 2 is inserted is formed on the side surface facing the plate portion 20 of the connecting member 2 (in the illustrated example, the lower surface of the upper wooden member 30 and the upper surface of the lower wooden member 30). A recess 38 is formed on the upper surface of the upper wooden member 30 to accommodate the head 36 and washer 37 of the bolt 35, and a recess 42 is formed on the lower surface of the lower wooden member 30 to accommodate a nut 40 and washer 41. The height of the protrusion 21 is equal to or slightly smaller than the height (depth) of the recess 32. The outer diameter of the protrusion 21 is equal to or slightly smaller than the inner diameter of the recess 32. Therefore, when the protrusion 21 is inserted into the recess 32, the surface (outer peripheral surface) of the protrusion 21 comes into contact with (closely adheres to) the inner surface (inner peripheral surface) of the recess 32.

[0020] The height (depth) of the protrusion 21 and the recess 32 is set smaller than the thickness (height in the vertical direction) of the wooden member 30. In other words, the height (depth) of the recess 32 is set to a height (depth) that does not penetrate the wooden member 30 in the vertical direction.

[0021] A hole 45 for passing the bolt 35 is provided in the center of the recess 42 so as to penetrate vertically. The protruding portion 21 is hollow, and the inside thereof provides a space for passing the bolt 35 therethrough.

[0022] The connecting member 2 and the wooden members 30 are connected as shown in Fig. 4. That is, the wooden members 30 are placed above and below the connecting member 2, and the protruding portions 21 formed on the upper plate portion 20 of the connecting member 2 are inserted into the recesses 32 formed on the underside of the upper wooden member 30, so that the underside of the upper wooden member 30 is in close contact with the upper side of the upper plate portion 20 of the connecting member 2. Also, the protruding portions 21 formed on the lower plate portion 20 of the connecting member 2 are inserted into the recesses 32 formed on the upper side of the lower wooden member 30, so that the upper side of the lower wooden member 30 is in close contact with the lower side of the lower plate portion 20 of the connecting member 2. In this case, the surface (outer peripheral surface) of each protruding portion 21 is inserted in close contact with the inner surface (inner peripheral surface) of each recess 32.

[0023] Then, the bolt 35 is inserted into the hole 45 from above the upper wooden member 30 via the washer 37, and the bolt 35 is passed through the hole 45 of the upper wooden member 30, the connecting member 2 (the space inside the upper and lower protruding parts 21), and the hole 45 of the lower wooden member 30 in that order, so that the tip of the bolt 35 protrudes from the underside of the lower wooden member 30. Then, the nut 40 is attached to the tip of the bolt 35 from below the lower wooden member 30 via the washer 41.

[0024] This allows the protrusion portion 21 formed on the upper plate portion 20 of the connecting member 2 to be inserted into the recess 32 formed on the underside of the upper wooden member 30, thereby bringing the underside of the upper wooden member 30 into close contact with the upper surface of the upper plate portion 20 of the connecting member 2, and also allows the protrusion portion 21 formed on the lower plate portion 20 of the connecting member 2 to be inserted into the recess 32 formed on the upper surface of the lower wooden member 30, thereby maintaining the upper surface of the lower wooden member 30 in close contact with the underside of the lower plate portion 20 of the connecting member 2.

[0025] When the connecting member 2 and the wooden members 30 are connected in this manner, the head 36 and washer 37 of the bolt 35 are housed in the recess 38 on the top surface of the upper wooden member 30, and the nut 40 and washer 41 are housed in the recess 38 on the bottom surface of the lower wooden member 30. However, the formation of the recess 38 is not essential, and the head 36 and washer 37 of the bolt 35 may be provided in contact with the surface of the wooden member 30 without the recess 38 being formed.

[0026] In the wooden structure 1 in which the connecting member 2 and wooden member 30 are connected as described above, when the nut 40 attached to the tip of the bolt 35 is tightened to connect the connecting member 2 and wooden member 30, the protrusion 21 formed on the upper plate portion 20 of the connecting member 2 is inserted into the recess 32 formed on the underside of the upper wooden member 30, so that the underside of the upper wooden member 30 is in close contact with the upper surface of the upper plate portion 20 of the connecting member 2, and the protrusion 21 formed on the lower plate portion 20 of the connecting member 2 is inserted into the recess 32 formed on the upper surface of the lower wooden member 30, so that the upper surface of the lower wooden member 30 is in close contact with the underside of the lower plate portion 20 of the connecting member 2. Therefore, resistance to the shear force generated between the connecting member 2 and the wooden members 30 can be maintained by the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and by the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the protrusion 21 formed on the lower plate portion 20 of the connecting member 2. Furthermore, frictional forces can be obtained due to the close contact between the bottom surface of the upper wooden member 30 and the top surface of the upper plate portion 20 of the connecting member 2, and between the top surface of the lower wooden member 30 and the bottom surface of the lower plate portion 20 of the connecting member 2. As a result, it is possible to maintain the connection between the wooden member 30 and other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in FIG. 1 and the framework 15 shown in FIG. 2, via the connecting member 2.

[0027] Furthermore, even if the tightening force of the nut 40 attached to the tip of the bolt 35 loosens, the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the protrusion 21 formed on the lower plate portion 20 of the connecting member 2, make it possible to maintain a force that resists the shear force generated between the connecting member 2 and the wooden member 30.

[0028] Furthermore, according to this wooden structure 1, the recess 32 formed on the underside of the upper wooden member 30 and the recess 32 formed on the top surface of the lower wooden member 30 do not penetrate the wooden member 30, so that the cross-sectional loss of the wooden member 30 can be kept small, and it is possible to avoid making the cross-sectional area of ​​the wooden member 30 larger than necessary.

[0029] (Second embodiment) As shown in Figure 5, the connecting member 2 according to the second embodiment of the present invention also has two plate portions 20 made of steel plates that are stacked one on top of the other and bonded together, with the upper plate portion 20 having a cylindrical protrusion portion 21 that protrudes upward, and the lower plate portion 20 having a cylindrical protrusion portion 21 that protrudes downward at the same position as the upper protrusion portion 21.

[0030] However, in the second embodiment, these protruding portions 21 are formed, for example, by punching the plate portions 20 before bonding the two plate portions 20 together. Also, a hole 50 for passing a bolt 35 is provided in the center of each protruding portion 21, penetrating vertically. Note that, except for the fact that the protruding portions 21 are formed by punching, the connecting member 2 according to the second embodiment of the present invention has the same configuration as the connecting member 2 according to the first embodiment of the present invention, and therefore a redundant description will be omitted.

[0031] Also in the second embodiment, when connecting the connecting member 2 and the wooden members 30, the wooden members 30 are placed above and below the connecting member 2, and the protrusions 21 formed on the upper plate portion 20 of the connecting member 2 are inserted into the recesses 32 formed in the underside of the upper wooden member 30, so that the underside of the upper wooden member 30 is in close contact with the upper side of the upper plate portion 20 of the connecting member 2, and the protrusions 21 formed on the lower plate portion 20 of the connecting member 2 are inserted into the recesses 32 formed in the upper side of the lower wooden member 30, so that the upper side of the lower wooden member 30 is in close contact with the lower side of the lower plate portion 20 of the connecting member 2. In this case, the surface (outer peripheral surface) of each protrusion 21 is inserted in close contact with the inner surface (inner peripheral surface) of each recess 32.

[0032] Then, the bolt 35 is inserted into the hole 45 from above the upper wooden member 30 via the washer 37, and the bolt 35 is passed through the hole 45 in the upper wooden member 30, the hole 50 for passing the bolt 35 provided in the center of the protruding portion 21 of the connecting member 2, and the hole 45 in the lower wooden member 30 in that order, so that the tip of the bolt 35 protrudes from the underside of the lower wooden member 30. Then, the nut 40 is attached to the tip of the bolt 35 from below the lower wooden member 30 via the washer 41.

[0033] This allows the protrusion portion 21 formed on the upper plate portion 20 of the connecting member 2 to be inserted into the recess 32 formed on the underside of the upper wooden member 30, thereby bringing the underside of the upper wooden member 30 into close contact with the upper surface of the upper plate portion 20 of the connecting member 2, and also allows the protrusion portion 21 formed on the lower plate portion 20 of the connecting member 2 to be inserted into the recess 32 formed on the upper surface of the lower wooden member 30, thereby maintaining the upper surface of the lower wooden member 30 in close contact with the underside of the lower plate portion 20 of the connecting member 2.

[0034] Even in the wooden structure 1 of the second embodiment in which the connecting member 2 and the wooden member 30 are connected as described above, when the nut 40 attached to the tip of the bolt 35 is tightened to connect the connecting member 2 and the wooden member 30, resistance to the shear force generated between the connecting member 2 and the wooden member 30 can be maintained by the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and by the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the protrusion 21 formed on the lower plate portion 20 of the connecting member 2.Furthermore, frictional forces due to the close contact between the bottom surface of the upper wooden member 30 and the top surface of the upper plate portion 20 of the connecting member 2, and frictional forces due to the close contact between the top surface of the lower wooden member 30 and the bottom surface of the lower plate portion 20 of the connecting member 2 can be obtained. As a result, it is possible to maintain the connection between the wooden member 30 and other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in Figure 1 and the framework 15 shown in Figure 2, via the connecting member 2.

[0035] Furthermore, even if the tightening force of the nut 40 attached to the tip of the bolt 35 were to loosen, the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the protrusion 21 formed on the lower plate portion 20 of the connecting member 2, can maintain the force to resist the shear force generated between the connecting member 2 and the wooden member 30. Similarly, cross-sectional loss of the wooden member 30 can be kept small, and it is possible to avoid making the cross-sectional area of ​​the wooden member 30 larger than necessary.

[0036] (Third embodiment) 6 and 7, a connecting member 2 according to a third embodiment of the present invention is also formed by stacking two steel plate portions 20 one above the other and bonding them together, with the upper plate portion 20 being provided with a hollow, cylindrical protrusion portion 21 that protrudes upward, and the lower plate portion 20 being provided with a hollow, cylindrical protrusion portion 21 that protrudes downward at the same position as the upper protrusion portion 21. These protrusion portions 21 are formed, for example, by burring the plate portions 20 before bonding the two plate portions 20 together.

[0037] However, in the third embodiment, a cap member 60 is attached to the protruding portion 21, and the surface of the cap member 60 is in contact with the inner surface of the recess 32. The cap member 60 has a cylindrical shape that surrounds the periphery of the protruding portion 21, and one opening of the cylindrical shape is closed by a bottom surface 61, and the other is open. A hole 62 for passing a bolt 35 is provided in the center of the bottom surface 61, penetrating vertically. The cap member 60 is then placed from above on the protruding portion 21 provided on the upper plate portion 20 with the bottom surface 61 facing up, and the cap member 60 is then placed from below on the protruding portion 21 provided on the lower plate portion 20 with the bottom surface 61 facing down, thereby attaching the cap members 60 to the upper and lower protruding portions 21.

[0038] The height of the cap member 60 is equal to or slightly smaller than the height (depth) of the recess 32 formed in the wood member 30. The outer diameter of the cap member 60 is equal to or slightly smaller than the inner diameter of the recess 32. Therefore, when the protruding portion 21 is inserted into the recess 32 with the cap member 60 attached, the surface (outer surface) of the cap member 60 comes into contact (closely adheres) with the inner surface (inner surface) of the recess 32. Note that, except for the fact that the cap member 60 is attached to the protruding portion 21, the connecting member 2 according to the third embodiment of the present invention has the same configuration as the connecting member 2 according to the first embodiment of the present invention, and therefore a redundant description will be omitted.

[0039] In the third embodiment as well, when connecting the connecting member 2 and the wooden members 30, the wooden members 30 are placed above and below the connecting member 2, and the protrusions 21 formed on the upper plate portion 20 of the connecting member 2 with the cap member 60 attached are inserted into the recesses 32 formed on the underside of the upper wooden member 30, so that the underside of the upper wooden member 30 is in close contact with the upper side of the upper plate portion 20 of the connecting member 2, and the protrusions 21 formed on the lower plate portion 20 of the connecting member 2 with the cap member 60 attached are inserted into the recesses 32 formed on the upper side of the lower wooden member 30, so that the upper side of the lower wooden member 30 is in close contact with the lower side of the lower plate portion 20 of the connecting member 2. In this case, the surfaces (outer surfaces) of the cap members 60 attached to the protrusions 21 are inserted in close contact with the inner surfaces (inner surfaces) of the recesses 32.

[0040] Then, the bolt 35 is inserted into the hole 45 from above the upper wooden member 30 via the washer 37, and the bolt 35 is passed through the hole 45 in the upper wooden member 30, the hole 62 provided in the center of the cap member 60, and the hole 45 in the lower wooden member 30 in that order, so that the tip of the bolt 35 protrudes from the underside of the lower wooden member 30. Then, the nut 40 is attached to the tip of the bolt 35 from below the lower wooden member 30 via the washer 41.

[0041] This allows the protrusion portion 21 formed on the upper plate portion 20 of the connecting member 2 and the cap member 60 to be inserted into the recess 32 formed on the underside of the upper wooden member 30, thereby tightly adhering the underside of the upper wooden member 30 to the upper surface of the upper plate portion 20 of the connecting member 2, and also allows the protrusion portion 21 formed on the lower plate portion 20 of the connecting member 2 and the cap member 60 to be inserted into the recess 32 formed on the upper surface of the lower wooden member 30, thereby maintaining the upper surface of the lower wooden member 30 in tight contact with the underside of the lower plate portion 20 of the connecting member 2.

[0042] Even in the wooden structure 1 of the third embodiment in which the connecting member 2 and the wooden member 30 are connected as described above, when the nut 40 attached to the tip of the bolt 35 is tightened to connect the connecting member 2 and the wooden member 30, resistance to the shear force generated between the connecting member 2 and the wooden member 30 can be maintained by the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and by the contact (close contact) between the recess 32 formed on the upper surface of the lower wooden member 30 and the protrusion 21 formed on the lower plate portion 20 of the connecting member 2.Furthermore, frictional forces due to the close contact between the underside of the upper wooden member 30 and the upper surface of the upper plate portion 20 of the connecting member 2, and frictional forces due to the close contact between the upper surface of the lower wooden member 30 and the lower surface of the lower plate portion 20 of the connecting member 2 can be obtained. As a result, it is possible to maintain the connection between the wooden member 30 and other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in Figure 1 and the framework 15 shown in Figure 2, via the connecting member 2.

[0043] Furthermore, even if the tightening force of the nut 40 attached to the tip of the bolt 35 were to loosen, the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the cap member 60 attached to the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the cap member 60 attached to the protrusion 21 formed on the lower plate portion 20 of the connecting member 2, can maintain the force to resist the shear force generated between the connecting member 2 and the wooden member 30. Similarly, cross-sectional loss of the wooden member 30 can be kept small, and it is possible to avoid making the cross-sectional area of ​​the wooden member 30 larger than necessary.

[0044] Additionally, in the wooden structure 1 according to the third embodiment, resistance to the shear force generated between the connecting member 2 and the wooden member 30 is maintained by contact between the inner surface of the recess 32 and the outer circumferential surface of the cap member 60, so the contact area can be made larger than when the inner surface of the recess 32 contacts the outer circumferential surface of the protruding portion 21. By attaching the cap member 60 to the protruding portion 21, a larger bearing area can be secured compared to when the bearing area is secured by the protruding portion 21 alone, enabling more reliable stress transmission.

[0045] (Fourth embodiment) As shown in Figure 8, the connecting member 2 according to the fourth embodiment of the present invention also has two plate portions 20 made of steel plates that are stacked one on top of the other and bonded together, with the upper plate portion 20 having a hollow cylindrical protrusion portion 21 that protrudes upward, and the lower plate portion 20 having a hollow cylindrical protrusion portion 21 that protrudes downward at the same position as the upper protrusion portion 21.

[0046] However, in the fourth embodiment, these protruding portions 21 are formed, for example, by punching the plate portions 20 before bonding the two plate portions 20 together. Also, a hole 50 for passing a bolt 35 is provided in the center of each protruding portion 21, penetrating vertically.

[0047] A cap member 60 is attached to the protruding portion 21, and the surface of the cap member 60 contacts the inner surface of the recess 32. The cap member 60 has a cylindrical shape surrounding the protruding portion 21, with one opening of the cylindrical shape closed by a bottom surface 61 and the other open. A hole 62 for passing a bolt 35 is provided in the center of the bottom surface 61, penetrating vertically. The cap member 60 is attached to the upper and lower protruding portions 21 by covering the protruding portion 21 provided on the upper plate portion 20 from above with the bottom surface 61 facing up, and covering the protruding portion 21 provided on the lower plate portion 20 from below with the bottom surface 61 facing down. Except for the fact that the protruding portions 21 are formed by step-punching, the connecting member 2 according to the fourth embodiment of the present invention has a similar configuration to the connecting member 2 according to the third embodiment of the present invention, and therefore a redundant description will be omitted.

[0048] Also in the fourth embodiment, when connecting the connecting member 2 and the wooden members 30, the wooden members 30 are placed above and below the connecting member 2, and the protrusions 21 formed on the upper plate portion 20 of the connecting member 2 with the cap member 60 attached are inserted into the recesses 32 formed on the underside of the upper wooden member 30, so that the underside of the upper wooden member 30 is in close contact with the upper side of the upper plate portion 20 of the connecting member 2, and the protrusions 21 formed on the lower plate portion 20 of the connecting member 2 with the cap member 60 attached are inserted into the recesses 32 formed on the upper side of the lower wooden member 30, so that the upper side of the lower wooden member 30 is in close contact with the lower side of the lower plate portion 20 of the connecting member 2. In this case, the surfaces (outer surfaces) of the cap members 60 attached to the protrusions 21 are inserted in close contact with the inner surfaces (inner surfaces) of the recesses 32.

[0049] Then, the bolt 35 is inserted into the hole 45 from above the upper wooden member 30 via the washer 37, and the bolt 35 is passed through the hole 45 in the upper wooden member 30, the hole 62 provided in the center of the cap member 60, and the hole 45 in the lower wooden member 30 in that order, so that the tip of the bolt 35 protrudes from the underside of the lower wooden member 30. Then, the nut 40 is attached to the tip of the bolt 35 from below the lower wooden member 30 via the washer 41.

[0050] This allows the protrusion portion 21 formed on the upper plate portion 20 of the connecting member 2 and the cap member 60 to be inserted into the recess 32 formed on the underside of the upper wooden member 30, thereby tightly adhering the underside of the upper wooden member 30 to the upper surface of the upper plate portion 20 of the connecting member 2, and also allows the protrusion portion 21 formed on the lower plate portion 20 of the connecting member 2 and the cap member 60 to be inserted into the recess 32 formed on the upper surface of the lower wooden member 30, thereby maintaining the upper surface of the lower wooden member 30 in tight contact with the underside of the lower plate portion 20 of the connecting member 2.

[0051] Even in the wooden structure 1 of the fourth embodiment in which the connecting member 2 and the wooden member 30 are connected as described above, when the nut 40 attached to the tip of the bolt 35 is tightened to connect the connecting member 2 and the wooden member 30, resistance to the shear force generated between the connecting member 2 and the wooden member 30 can be maintained by the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the cap member 60 attached to the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and by the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the cap member 60 attached to the protrusion 21 formed on the lower plate portion 20 of the connecting member 2.Furthermore, frictional forces due to the close contact between the bottom surface of the upper wooden member 30 and the top surface of the upper plate portion 20 of the connecting member 2, and frictional forces due to the close contact between the top surface of the lower wooden member 30 and the bottom surface of the lower plate portion 20 of the connecting member 2 can be obtained. As a result, it is possible to maintain the connection between the wooden member 30 and other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in Figure 1 and the framework 15 shown in Figure 2, via the connecting member 2.

[0052] Furthermore, even if the tightening force of the nut 40 attached to the tip of the bolt 35 were to loosen, the contact (close contact) between the recess 32 formed on the underside of the upper wooden member 30 and the cap member 60 attached to the protrusion 21 formed on the upper plate portion 20 of the connecting member 2, and the contact (close contact) between the recess 32 formed on the top surface of the lower wooden member 30 and the cap member 60 attached to the protrusion 21 formed on the lower plate portion 20 of the connecting member 2, can maintain the force to resist the shear force generated between the connecting member 2 and the wooden member 30. Similarly, cross-sectional loss of the wooden member 30 can be kept small, and it is possible to avoid making the cross-sectional area of ​​the wooden member 30 larger than necessary.

[0053] Similarly, in the wooden structure 1 according to the fourth embodiment, resistance to the shear force generated between the connecting member 2 and the wooden member 30 is maintained by contact between the inner surface of the recess 32 and the outer circumferential surface of the cap member 60, so the contact area can be made larger than when the inner surface of the recess 32 contacts the outer circumferential surface of the protruding portion 21. By attaching the cap member 60 to the protruding portion 21, a larger bearing area can be secured compared to when the bearing area is secured by the protruding portion 21 alone, allowing for more reliable stress transmission.

[0054] (Variation) Although the present invention has been described above by way of example, the present invention is not limited to such examples. It is clear that a person skilled in the art can conceive of various modifications or alterations within the scope of the technical ideas set forth in the claims, and it is understood that such modifications also fall within the technical scope of the present invention.

[0055] For example, the components of the above-described embodiments can be combined in any manner, and such combinations will naturally provide the functions and effects of the individual components involved in the combination, as well as other functions and effects that will be apparent to those skilled in the art from the description herein.

[0056] In the above-described first to fourth embodiments, the connecting member 2 is sandwiched between two upper and lower wooden members 30. However, the connecting member 2 may be attached to the side of a single wooden member 30. In the example shown in FIG. 9, the connecting member 2 has a configuration in which a hollow cylindrical protrusion 21 protruding upward from a plate portion 20 made of a single steel plate. The protrusion 21 of the connecting member 2 is inserted into a recess 32 formed on the underside of the wooden member 30, and the underside of the wooden member 30 is brought into close contact with the upper surface of the plate portion 20 of the connecting member 2. A bolt 35 is inserted into the hole 45 from above the wooden member 30 via a washer 37, and penetrates the connecting member 2 (the space inside the protrusion 21) so that the tip of the bolt 35 protrudes from the underside of the plate portion 20 of the connecting member 2. A nut 40 is then attached to the tip of the bolt 35 from below the plate portion 20 via a washer 41.

[0057] Even in the wooden structure 1 in which the connecting member 2 and wooden member 30 are connected as described above, when the nuts 40 attached to the ends of the bolts 35 are tightened to connect the connecting member 2 and wooden member 30, resistance to the shear force generated between the connecting member 2 and wooden member 30 can be maintained by the contact (close contact) between the recess 32 formed on the underside of the wooden member 30 and the protrusion 21 formed on the plate portion 20 of the connecting member 2. Furthermore, frictional force can be obtained by the close contact between the underside of the wooden member 30 and the upper surface of the plate portion 20 of the connecting member 2. As a result, it is possible to maintain the connection between the wooden member 30 and other wooden members, steel members, or concrete members, such as the upper main girder 10 and lower main girder 11 shown in FIG. 1 and the framework 15 shown in FIG. 2, via the connecting member 2.

[0058] Furthermore, even if the tightening force of the nut 40 attached to the tip of the bolt 35 loosens, the contact (close contact) between the recess 32 formed on the underside of the wooden member 30 and the protrusion 21 formed on the plate portion 20 of the connecting member 2 maintains a force that resists the shear force generated between the connecting member 2 and the wooden member 30. Similarly, cross-sectional loss of the wooden member 30 can be kept small, and it is possible to avoid making the cross-sectional area of ​​the wooden member 30 larger than necessary.

[0059] 9, the protruding portion 21 may be formed by either burring or step punching. Also, a cap member 60 may be attached to the protruding portion 21 so that the surface of the cap member 60 comes into contact with the inner surface of the recess 32.

[0060] Furthermore, the combinations of the protrusion 21 and the cap member 60 are not limited to those illustrated in Figures 6 to 8. For example, combinations of the protrusion 21 and the cap member 60 shown in Figures 10(a) to 10(f) are also possible. Figure 10(a) shows an example in which the cap member 60 is attached by covering the outside of the protrusion 21 formed by burring. Figure 10(b) shows an example in which the base 63 of the cap member 60 is inserted into the inside of the protrusion 21 formed by burring. Figure 10(c) shows an example in which the cap member 60 is attached by covering the outside of the protrusion 21 formed by burring, and the base 63 of the cap member 60 is inserted into the inside of the protrusion 21. Fig. 10(d) shows an example in which a cap member 60 is attached to both side surfaces of the plate portion 20 by covering the outside of the protrusion 21 formed by burring and inserting a base 63 of the cap member 60 into the protrusion 21 from the opposite side surface of the plate portion 20. Fig. 10(e) shows an example in which a cap member 60 is attached to both side surfaces of the plate portion 20 by covering the outside of the protrusion 21 formed by step-punching. Fig. 10(f) shows an example in which a cap member 60 is attached to both side surfaces of the plate portion 20 by covering the outside of the protrusion 21 formed by step-punching and inserting a base 63 of the cap member 60 into the protrusion 21 from the opposite side surface of the plate portion 20.

[0061] Furthermore, the shapes of the protrusion 21 and the cap member 60 are not limited to a cylindrical shape. For example, the shapes of the protrusion 21 and the cap member 60 may be polygonal prisms. Fig. 11 shows a cap member 60 configured in a quadrangular prism shape. Furthermore, although it has been described that one side of the cylindrical opening of the cap member 60 is closed by the bottom surface 61, both ends of the cylindrical shape may be open.

[0062] Furthermore, the effects described herein are merely descriptive or exemplary and are not limiting. In other words, the technology according to the present disclosure may achieve other effects that are apparent to those skilled in the art from the description of this specification, in addition to or in place of the above-described effects. [Industrial Applicability]

[0063] The present invention can be applied to a wooden structure that connects wooden members together or connects wooden members to steel members. [Explanation of symbols]

[0064] 1 Wooden structure 2. Connecting members 10 Upper main girder 11 Lower main girder 12 Truss members (wooden members) 15 Framework 16 Brace member 20 Plate part 21 Projection part 30 Wooden materials 31 Board material 32 recess 35 volts 36 Head 37 Washer 38 Recess 40 nuts 41 Washer 42 recess 45 holes 50 holes 60 Cap member 61 bottom 62 holes

Claims

1. A connecting member that connects wooden members to each other, or a wooden member to a steel member or a concrete member, A connecting member having a plate portion that is in close contact with the side surface of the wooden member, and a protruding portion that protrudes from the plate portion and is inserted into a recess formed in the side surface of the wooden member.

2. The connection member according to claim 1 , wherein a surface of the protruding portion contacts an inner surface of the recessed portion.

3. The connection member according to claim 1 , wherein a cap member is attached to the protruding portion, and a surface of the cap member contacts an inner surface of the recess.

4. The connecting member according to claim 1 , wherein the protruding portion is formed by burring.

5. The connecting member according to claim 1 , wherein the protruding portion is formed by step-punching.

6. A wooden structure in which wooden members are connected to each other, or a wooden member is connected to a steel member or a concrete member using the connecting member according to any one of claims 1 to 5.

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