Joint material, joint structure of members, and wooden members with joint material

Abstract

To provide a joint material which can prevent fillers from peeling off to a great extent even if forces like impact are applied on it.SOLUTION: A joint material 7 has a rod-shaped core material 19, an intermediate material 21 which is formed in a cylindrical shape and which is installed in the middle portion in the longitudinal direction of the core member 19 so that the core member 19 penetrates, a first fixing member 23 which is formed in a cylindrical shape and has irregularities formed on its outer peripheral surface, and which is installed at one end side of the core member 19 in the longitudinal direction so that the core member 19 penetrates and contacts the intermediate material 21, a first end member 25 mounted on the core member 19 at one end in the longitudinal direction of the core material 19 so that it is in touch with the first fixing member 23 on the further end side than the first fixing member 23.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a joining material, a joining structure for members, and a wooden member with a joining material. [Background technology]

[0002] BACKGROUND ART Conventionally, a joining structure for wooden members using a metal male screw material and an adhesive is known (see Patent Document 1).

[0003] In a conventional joining structure for wooden members, one wooden member has a hole formed therein, and the other wooden member has a hole formed therein, and the end face of the one wooden member is joined to the end face of the other wooden member so that the holes communicate with each other.

[0004] In addition, in conventional joining structures for wooden members, one longitudinal end of the male screw material is inserted into a hole in one wooden member, and the other longitudinal end of the male screw material is inserted into a hole in the other wooden member.

[0005] Furthermore, in conventional joining structures for wooden members, adhesive is filled between each hole and the male screw member, which increases the joining strength between one wooden member and the other wooden member, and ensures that the joining between the two wooden members is maintained even when a large force is applied to the wooden members. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-227800 Summary of the Invention [Problem to be solved by the invention]

[0007] In conventional joining structures for wooden members, when force (for example, impact force) is applied to the wooden member, it is important to prevent the adhesive (filler) from peeling off at the joint between the male screw material and the adhesive, and at the joint between the adhesive and the wooden member.

[0008] The present invention aims to provide a joining structure for components that can minimize the peeling of filler even when a force such as an impact force is applied, and a wooden component with a joining material used in this joining structure for wooden components. [Means for solving the problem]

[0009] A joining material according to one aspect of the present invention is a joining material having a fixing portion that is inserted into a hole provided in a wooden member and fixed to the wooden member via a filler, and a deforming portion that supports one longitudinal end of the fixing portion at one longitudinal end and has a portion on the other longitudinal end side extending from the other longitudinal end of the fixing portion, and that elastically or plastically deforms due to a tensile load applied in the longitudinal direction in order to reduce the stress applied to the joint between the fixing portion and the filler when the tensile load is applied in the longitudinal direction.

[0010] In addition, a bonding material according to an embodiment of the present invention is a bonding material having a rod-shaped core material, a cylindrically formed intermediate material that is installed in the middle of the longitudinal direction of the core material so that the core material passes through it, a first fixing member that is cylindrically formed with unevenness on its outer surface, the core material passes through it, and is installed at one end side of the longitudinal direction of the core material so that it is in contact with the intermediate material or slightly spaced apart from the intermediate material, and a first end member that is installed on the core material at one end side of the longitudinal direction of the core material, further towards the end side than the first fixing member, so that it is in contact with the first fixing member or slightly spaced apart from the first fixing member.

[0011] In addition, a bonding material according to an embodiment of the present invention is a bonding material that is formed in a cylindrical shape, has unevenness formed on the outer peripheral surface, and has a second fixing member that is installed at the other longitudinal end side of the core material so as to be in contact with the intermediate material or slightly spaced apart from the intermediate material, through which the core material passes, and a second end member that is installed on the core material at the other longitudinal end side of the core material, further toward the end side than the second fixing member, so as to be in contact with the second fixing member or slightly spaced apart from the second fixing member.

[0012] A joining structure for members according to one embodiment of the present invention is a joining structure for members comprising a first wooden member having a hole formed therein, a second wooden member having a hole formed therein and in contact with the first wooden member so that the hole is connected to the hole in the first wooden member, the joining material penetrating the hole in the first wooden member and the hole in the second wooden member, and a filler filling the hole in the first wooden member and the hole in the second wooden member.

[0013] In the joining structure of components according to this embodiment of the present invention, the filler is filled in the portion of the hole of the first wooden component where the first fixing member and the first end member are inserted, and in the portion of the hole of the second wooden component where the second fixing member and the second end member are inserted.

[0014] In addition, in the bonding material according to this aspect of the present invention, the other longitudinal end of the core material is provided with an installation portion that is installed on an installation portion provided on a metal connector.

[0015] A wooden member with a joining material according to one embodiment of the present invention is a wooden member with a joining material, in which the joining material, a wooden member having a hole formed therein, the intermediate member, the first fixing member, and the first end member are inserted into the holes of the wooden member, the installation portion protrudes from the wooden member, the installation portion is installed on the installation portion of the metal connector, and the metal connector is in contact with the wooden member.

[0016] In addition, a bonding material according to an aspect of the present invention is a bonding material having a rod-shaped core material, a first fixing member formed in a cylindrical shape and having an uneven outer surface, the first fixing member being installed at one end side of the longitudinal direction of the core material so that the core material passes through, and a first end member being installed on the core material at one end side of the longitudinal direction of the core material, further toward the end side than the first fixing member, so as to be in contact with the first fixing member or slightly spaced apart from the first fixing member. [Effects of the Invention]

[0017] The present invention has the effect of preventing the filler from peeling off as much as possible even when a force such as an impact force is applied. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is an exploded perspective view of a joining material used in a joining structure of members according to an embodiment of the present invention. FIG. [Figure 2] 1 is a perspective view of a joining material used in a joining structure of members according to an embodiment of the present invention. [Figure 3] 1 is a perspective view of a joining structure of members according to an embodiment of the present invention; [Figure 4] 1 is a cross-sectional view of a joining structure of members according to an embodiment of the present invention. [Figure 5] 1A and 1B are cross-sectional views of a joining material used in a joining structure of members according to an embodiment of the present invention, in which (b) is an enlarged view of the VB portion in (a), and (b) is an enlarged view of the VC portion in (a). [Figure 6] 6(a) is a cross-sectional view of an intermediate material used in the joining material shown in FIG. 5, (b) is a diagram showing a modified example of the intermediate material shown in (a), and (c) is a diagram showing another modified example of the intermediate material shown in (a). [Figure 7] FIG. 5 is a cross-sectional view corresponding to FIG. 4, showing a joining structure of members according to a first modified example. [Figure 8] FIG. 8 is a view taken along the line VIII-VIII in FIG. 7. [Figure 9]10(a) is a cross-sectional view of a joining structure of members according to a second modified example in which wooden members with joining material are used, and FIG. 10(b) is a side view of a metal connector. [Figure 10] FIG. 10(a) is a cross-sectional view of a joining structure of members according to a third modified example, and FIG. 10(b) is a cross-sectional view of a joining structure of members according to a fourth modified example. [Figure 11] FIG. 10 is a perspective view of a bonding material according to a further modified example. [Figure 12] FIG. 10 is a perspective view of a bonding material according to a further modified example. [Figure 13] FIG. 10 is a diagram showing a joining structure of members according to a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0019] The joining structure 1 for components according to an embodiment of the present invention is used to join wooden components together, and as shown in Figures 3 and 4, is composed of a first wooden component 3, a second wooden component 5, a joining material 7, and a filler (for example, a filler having adhesive properties) 9.

[0020] Here, for convenience of explanation, one predetermined direction in the member joining structure 1 is defined as the vertical direction, one predetermined direction perpendicular to the vertical direction is defined as the horizontal direction, and the direction perpendicular to the vertical and horizontal directions is defined as the height direction. Also, the dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.

[0021] The first wooden member 3 has a hole (blind hole) 11. The second wooden member 5 also has a hole (blind hole) 13. The second wooden member 5 is in contact with the first wooden member 3 such that the hole 13 and the hole 11 of the first wooden member 3 are connected to each other.

[0022] The bonding material 7 fills the holes 11 of the first wooden member 3 and the holes 13 of the second wooden member 5. The filler 9 fills the holes 11 of the first wooden member 3 and the holes 13 of the second wooden member 5. More specifically, the filler 9 fills all of the gaps 47 formed between the bonding material 7 and the inner surfaces of the holes 11 of the first wooden member 3 and the holes 13 of the second wooden member 5. Note that the holes 11, 13, and the filler 9 are not shown in FIG. 3.

[0023] As shown in FIGS. 1, 2, 5, 10(a), and the like, the bonding material 7 is configured to include an anchoring portion 15 and a deformation portion (toughness ensuring portion) 17.

[0024] The fixing part 15 is inserted into a hole 11 (13) provided in the wooden member 3 (5). The fixing part 15 is fixed to the wooden member 3 (5) via a filler (for example, an adhesive made of synthetic resin) 9 that is filled into the hole 11 (13) and solidified, and is thus installed integrally with the wooden member 3 (5).

[0025] The deforming portion 17 supports one longitudinal end of the fixing portion 15 (for example, one end face or a portion from the one end face to the vicinity thereof) at one longitudinal end thereof (for example, one end face or a portion from the one end face to the vicinity thereof). That is, the deforming portion 17 extends a predetermined length from one longitudinal end to the other end thereof. The fixing portion 15 extends a predetermined length that is shorter than the deforming portion 17 from one longitudinal end of the fixing portion 15 (deforming portion 17) to the other end thereof. As a result, in the bonding material 7, the fixing portion 15 and the deforming portion 17 extend side by side at the fixing portion 15 in the longitudinal direction.

[0026] Furthermore, the portion of the deforming portion 17 on the other end side in the longitudinal direction extends (protrudes) a long distance from the other end in the longitudinal direction of the fixing portion 15. The deforming portion 17 is provided to reduce the stress applied to the joint (fixing portion) between the fixing portion 15 and the filler 9 when a tensile load (for example, an impact tensile load) is applied in the longitudinal direction. The deforming portion 17 is also provided to reduce the stress applied to the joint (fixing portion) between the inner surface of the hole 11 (13) in the wooden member 3 (5) and the filler 9. The deforming portion 17 is designed to reduce the above-mentioned stress by temporarily elastically deforming due to the tensile load.

[0027] In the bonding material 7, the longitudinal direction of the fixed portion 15 and the longitudinal direction of the deformed portion 17 coincide with each other. With the fixed portion 15 fixed to the wooden member 3 (5) with the filler 9, an impact tensile load is applied to the portion of the deformed portion 17 extending from the fixed portion 15 (for example, the other end portion of the deformed portion 17 in the longitudinal direction).

[0028] As a result, the deforming portion 17 is temporarily elastically deformed in the longitudinal direction. This temporary elastic deformation absorbs the energy of the impact tensile load, and the stress applied to the joint between the fixing portion 15 and the filler 9, etc., is reduced.

[0029] One longitudinal end of the fixing portion 15 is supported by one longitudinal end of the deforming portion 17, so that the fixing portion 15 and the deforming portion 17 are integrated with each other. Note that, due to the support, the bonding material 7 may have resistance to only one longitudinal force.

[0030] That is, even if the deformation portion 17 is fixed and a force is applied to the fixing portion 15 to move the fixing portion 15 toward one end in the longitudinal direction, the fixing portion 15 does not move relative to the deformation portion 17. On the other hand, the deformation portion 17 may be fixed and the fixing portion 15 may move relative to the deformation portion 17 when a force is applied to the fixing portion 15 to move the fixing portion 15 toward the other end in the longitudinal direction.

[0031] As shown in Figures 4 and 10(a), when the joining material 7 is installed together with the filler 9 in the wooden member 3(5), the fixed portion 15 and a portion of the deformed portion 17 (at least the portion that is in the same position as the fixed portion 15 in the longitudinal direction) are inserted into the hole 11(13) in the wooden member 3(5). Also, the portion on the other end side of the deformed portion 17 in the longitudinal direction protrudes from the hole in the wooden member 3(5). The filler 9 is filled, for example, from the bottom of the hole 11(13) in the wooden member 3(5) to the opening, filling the hole 11(13).

[0032] The bonding material 7 is placed on the wooden member 3 (5) together with the filler 9, and the filler 9 hardens, fixing the fixed portion 15 to the wooden member 3 (5) with the filler 9. In this state, suppose a small force in the longitudinal direction of the bonding material 7, which acts in a direction to pull the bonding material 7 out of the wooden member 3 (5), is applied to the deformed portion 17. The value of this force is gradually increased. Then, the deformed portion 17 stretches until the value of this force reaches a predetermined large value. Meanwhile, the fixed portion 15 remains fixed to the filler 9, and the filler 9 remains fixed to the hole 11 (13).

[0033] Here, the support position of the deformation portion 17 and the fixing portion 15 in the longitudinal direction thereof will be further explained. In the above explanation, one longitudinal end of the deformation portion 17 supports one longitudinal end of the fixing portion 15, but this is not limited to one end, and one end may be one end. Here, one end indicates a range slightly wider than one end, and is the area between one end and a point slightly away from the other end.

[0034] Furthermore, one longitudinal end of the deformation portion 17 may support a longitudinal intermediate portion of the fixing portion 15, or one longitudinal end of the fixing portion 15 may be supported by the longitudinal intermediate portion of the deformation portion 17, or the longitudinal intermediate portion of the deformation portion 17 may support the longitudinal intermediate portion of the fixing portion 15. In this case, it is desirable that the intermediate portion be located closer to the one end than the longitudinal intermediate portion.

[0035] The bonding material 7 will now be described in more detail with reference to FIGS.

[0036] The bonding material 7 is composed of a rod-shaped core material 19 that constitutes the deformation portion 17, an intermediate material 21, a first fixing member 23 that constitutes the fixing portion 15, and a first end member 25 for supporting the fixing portion 15 in the deformation portion 17.

[0037] The core material 19 is formed, for example, in a tall cylindrical shape. Since it is cylindrical, the rod-shaped core material 19 is not a perfect cylinder but has a shape that approximates a cylinder. For example, a male thread 27 is formed over a predetermined length at the longitudinal end of the core material 19. This results in the core material 19 being formed in a slender cylindrical shape. The male thread 27 is formed, for example, by rolling a cylindrical material. When formed by rolling, the thread diameter of the male thread 27 is slightly larger than the outer diameter of the longitudinal middle portion of the core material 19 where the male thread 27 is not formed. The male thread 27 may also be formed by cutting. When formed by cutting, the thread diameter of the male thread 27 of the core material 19 is approximately equal to the outer diameter of the longitudinal middle portion of the core material 19 where the male thread 27 is not formed. The longitudinal direction of the core material 19 corresponds to the vertical direction shown, for example, in Figures 3 and 4.

[0038] The intermediate material 21 is formed in a cylindrical shape and is placed in the middle of the core material 19 in the longitudinal direction so that the core material 19 passes through it. The intermediate material 21 has, for example, a completely cylindrical shape. The inner diameter of the intermediate material 21 is slightly larger than the outer diameter of the core material 19. The length dimension of the intermediate material 21 (the dimension in the extension direction of the central axis) is smaller than the length dimension of the core material 19 (the dimension in the extension direction of the central axis).

[0039] The first fixing member 23 is formed in a cylindrical shape, has irregularities formed on its outer peripheral surface, and is installed on one end side (first end side) in the longitudinal direction of the core material 19 so that the core material 19 passes through and is in contact with the intermediate material 21 or is slightly separated from the intermediate material 21. The irregularities on the first fixing member 23 are provided to increase the bonding strength between the first fixing member 23 and the filler 9.

[0040] If the first fixing member 23 had no irregularities on its outer peripheral surface, it would have a perfectly cylindrical shape. The inner diameter of the first fixing member 23 is slightly larger than the outer diameter of the core material 19. The length dimension of the first fixing member 23 (the dimension in the extension direction of the central axis) is smaller than the length dimension of the core material 19 (the dimension in the extension direction of the central axis).

[0041] The maximum outer diameter of the outer peripheral surface of the first fixing member 23 is approximately equal to the outer diameter of the intermediate material 21. The unevenness on the outer peripheral surface of the first fixing member 23 is formed, for example, by a male thread 29. The male thread 29 is formed, for example, by rolling a material similar to the intermediate material 21. If formed by rolling, the thread diameter of the male thread 29 of the first fixing member 23 is slightly larger than the outer diameter of the intermediate material 21. Note that the male thread 29 may be formed, for example, by cutting a material similar to the intermediate material 21. If formed by cutting, the thread diameter of the male thread 29 is approximately equal to the outer diameter of the intermediate material 21.

[0042] The first end member 25 is integrally installed on one end side (first end side) of the core material 19 in the longitudinal direction, further on the end side than the first fixing member 23, so as to be in contact with the first fixing member 23 or slightly spaced apart from the first fixing member 23.

[0043] The first end member 25 is formed, for example, by a nut. The nut 25 is threaded onto a male thread 29 formed on one longitudinal end of the rod-shaped core material 19. The maximum outer diameter of the nut 25 is, for example, approximately equal to the outer diameter of the intermediate material 21.

[0044] The bonding material 7 is formed by placing the intermediate material 21, the first fixing member 23, and the first end member 25 on the core material 19. The outer shape of the bonding material 7 is generally rod-shaped (for example, cylindrical). One longitudinal end of the core material 19 protrudes slightly from the first end member 25. If the second fixing member 31 and the second end member 33, which will be described in detail later, were not provided, the other longitudinal end of the core material 19 would protrude a predetermined length from the intermediate material 21.

[0045] In the bonding material 7, the first end member 25 is provided, which prevents the first fixing member 23 and the intermediate material 21 from moving toward one end of the core material 19 in the longitudinal direction and falling off the core material 19.

[0046] The bonding material 7 is also configured to include a second fixing member 31 that constitutes the fixing portion 15, and a second end member 33 that supports the fixing portion 15 with the deforming portion 17. The second fixing member 31 is formed, for example, in the same shape as the first fixing member 23. That is, the second fixing member 31 is formed in a cylindrical shape with irregularities formed on the outer circumferential surface. The second fixing member 31 is also installed on the other end side (second end side) of the core material 19 in the longitudinal direction, so that the core material 19 passes through the second fixing member 31 and is in contact with the intermediate material 21 or slightly spaced apart from the intermediate material 21.

[0047] The second end member 33 is installed on the core material 19 at the other longitudinal end side (second end side) of the core material 19, further end side than the second fixing member 31, so as to be in contact with the second fixing member 31 or slightly spaced apart from the second fixing member 31.

[0048] The second end member 33 is also formed of, for example, a nut, similar to the first end member 25. The nut 33 is threaded onto a male screw 35 formed on the other end of the rod-shaped core material 19 in the longitudinal direction.

[0049] The bonding material 7 is also formed by placing the intermediate material 21, the first fixing member 23, the second fixing member 31, the first end member 25, and the second end member 33 on the core material 19. The outer shape of the bonding material 7 is formed into a rod shape (for example, a cylindrical shape).

[0050] In the bonding material 7 provided with the second fixing member 31 and the second end member 33, the first member 25, the first fixing member 23, the intermediate member 21, the second fixing member 31, and the second end member 33 are arranged in this order from one end to the other in the longitudinal direction of the core material 19. In addition, in the bonding material 7 provided with the second fixing member 31, etc., one end of the core material 19 in the longitudinal direction slightly protrudes from the first end member 25, and the other end of the core material 19 in the longitudinal direction slightly protrudes from the second end member 33.

[0051] In addition, one longitudinal end of the core material 19 may not protrude from the first end member 25, and the other longitudinal end of the core material 19 may not protrude from the second end member 33.

[0052] Furthermore, in the bonding material 7, the first end member 25 and the second end member 33 are provided, which prevents the first fixing member 23, the intermediate member 21, and the second fixing member 31 from coming off the core material 19. However, the first end member 25 and the second end member 33 do not fasten the first fixing member 23, the intermediate member 21, and the second fixing member 31 together in the longitudinal direction of the core material 19. Alternatively, the first end member 25 and the second end member 33 may fasten the first fixing member 23, the intermediate member 21, and the second fixing member 31 together in the longitudinal direction of the core material 19 with a biasing force.

[0053] Core material 19 is made of a metal such as steel. Intermediate material 21, first fixing member 23, second fixing member 31, first end member 25, and second end member 33 are also made of a metal such as steel. Note that intermediate material 21, first fixing member 23, and second fixing member 31 may be made of a non-metallic material other than metal, such as a hard synthetic resin or ceramics.

[0054] Furthermore, the small gaps 37 between the core material 19 and the intermediate material 21, the first fixing member 23, and the second fixing member 31 may be filled with a filler 9 such as a synthetic resin, or may be hollow without being filled with a filler. The gaps 37 are cylindrical gaps in the radial direction of the joining material 7. The filler 9 is the same filler as the filler filled in the holes 11 (13) of the wooden member 3 (5). However, the filler 9 may be a filler with different specifications from the filler filled in the holes 11 (13) of the wooden member 3 (5).

[0055] In the above description, the fixing member 23 (31) is cylindrical with the male thread 27 formed on its outer periphery, but the outer periphery may have other irregularities formed thereon. For example, as shown in Fig. 6(a), the fixing member 23 (31) may have large diameter portions 39 and small diameter portions 41 arranged alternately in the direction of extension of the central axis of the cylinder.

[0056] 6(a), the cross-sectional shape of the outer periphery is a triangular wave, but the cross-sectional shape of the outer periphery may be a rectangular wave, or a trapezoidal wave such as an isosceles trapezoidal wave. Furthermore, the cross-sectional shape of the outer periphery may be another shape such as a sine wave, or irregular projections and depressions may be formed on the outer periphery of the fixing member 23 (31).

[0057] In the fixing member 23 (31) shown in Figure 6(b), the fixing member 23 (31) shown in Figure 6(a) is divided into multiple members 23A, 23B, 23C, 23D (31A, 31B, 31C, 31D) in the extension direction of its central axis. This makes it easy to adjust the length dimension of the fixing member 23 (31) (the dimension in the extension direction of the central axis of the tube), and even if the length dimension of the fixing member 23 (31) becomes large, it is easy to provide a through hole for making it into a tube by machining.

[0058] The dimensions (dimensions in the direction of extension of the central axis of the cylinder) of each of the members 23A, 23B, 23C, and 23D (31A, 31B, 31C, and 31D) are, for example, different from each other. Note that the dimensions (dimensions in the direction of extension of the central axis of the cylinder) of at least some of the members 23A, 23B, 23C, and 23D (31A, 31B, 31C, and 31D) may be the same.

[0059] The fixing member 23 (31) shown in Fig. 6(c) is formed by cutting a metal flexible tube to a predetermined length. The fixing member 23 (31) shown in Fig. 6(c) has repeated irregularities formed not only on the outer periphery of the tube but also on the inner periphery of the tube.

[0060] The anchoring member 23 (31) may also be formed from deformed reinforcing bars used in reinforced concrete. That is, the deformed reinforcing bars may be cut to a predetermined length, and the cut deformed reinforcing bars may be formed into a cylindrical shape with through holes, which may then be used as the anchoring member 23 (31).

[0061] In the member joining structure 1, the first wooden member 3 is formed in a rectangular prism shape. The second wooden member 5 is also formed in a rectangular prism shape. The longitudinal direction of the first wooden member 3 is the height direction. The longitudinal direction of the second wooden member 5 is the vertical direction.

[0062] In the member joint structure 1, a part of the side surface of the first wooden member 3 (a middle part in the longitudinal direction) is in contact with an end face in the longitudinal direction of the second wooden member 5.

[0063] The hole 11 in the first wooden member 3 is recessed from one side surface of the first wooden member 3 to the other side surface opposite to the first side surface. The hole 13 in the second wooden member 5 is recessed from one end surface in the longitudinal direction of the second wooden member 5 to the other end surface opposite to the first end surface.

[0064] As described above, the holes 11 of the first wooden member 3 and the holes 13 of the second wooden member 5 are connected to each other and their central axes coincide with each other. As a result, one hole 11 and one hole 13 form one cylindrical closed space 43.

[0065] In the above description, the hole 11 in the first wooden member 3 (hole 13 in the second wooden member 5) is formed in a cylindrical shape. However, the hole 11 in the first wooden member 3 (hole 13 in the second wooden member 5) may be formed with a female screw, for example, so that the side surface of the hole 11 in the first wooden member 3 (hole 13 in the second wooden member 5) has repeated irregularities.

[0066] The longitudinal direction of the cylindrical space 43 (height direction of the cylinder) is vertical. Strictly speaking, the space 43 is not closed because a filler introduction hole 45, which will be described in detail later, is formed therein, but here it is referred to as a closed space. A plurality of (for example, two) closed spaces 43 are provided. The plurality of spaces 43 are arranged at a predetermined distance from each other.

[0067] The diameter of the cylinder of the space 43 is slightly larger than the outer diameter of the bonding material 7, and the height dimension of the cylinder of the space 43 is slightly larger than the height dimension of the bonding material 7. By disposing the bonding material 7 in the space 43, a gap 47 is formed between the inner wall surface of the space 43 and the bonding material 7. The filler 9 is filled throughout the gap 47.

[0068] When the joining material 7 is placed in the space 43, one longitudinal portion of the intermediate member 21 of the joining material 7, the first fixing member 23, and the first end member 25 fit into the hole 11 of the first wooden member 3. When the joining material 7 is placed in the space 43, the other longitudinal portion of the intermediate member 21 of the joining material 7, the second fixing member 31, and the second end member 33 fit into the hole 13 of the second wooden member 5.

[0069] The filler introduction holes 45 are formed by small holes provided in each of the first wooden member 3 and the second wooden member 5. The small holes 45 connect the space 43 to the outside of the first wooden member 3 and the second wooden member 5. The small hole 45 in the first wooden member 3 is connected to the space 43 at one end in the longitudinal direction of the space 43. The small hole 45 in the second wooden member 5 is connected to the space 43 at the other end in the longitudinal direction of the space 43.

[0070] The small hole 45 is used to fill the space 43 with the filler 9, and is also used as an air vent hole to discharge air from the space 43 while the filler 9 is being filled.

[0071] 4, the entire space 43 is filled with the filler 9, but the filler 9 may not be present at the intermediate material 21, leaving a gap. In other words, the outer peripheral surface of the intermediate material 21 may not be in contact with the filler 9.

[0072] Here, the assembly procedure for the member joining structure 1 will be described.

[0073] The second wooden member 5 is placed on the first wooden member 3 with one end of the joining material 7 inserted into the hole 11 of the first wooden member 3 and the other end of the joining material 7 inserted into the hole 13 of the second wooden member 5. This forms a space 43 containing the joining material 7.

[0074] Next, the space 43 is filled with a fluid filler 9 using the small holes 45, and then the filler 9 is hardened to obtain the bonded structure 1 of the members.

[0075] Next, a case where a load is applied to the member joint structure 1 will be described.

[0076] With the first wooden member 3 fixed, an impact force (tensile impact load) indicated by arrow A1 in FIG. 4 is applied to the second wooden member 5. This generates stress at the joint between the filler 9 and the inner surface of the hole 11 in the first wooden member 3, and at the joint between the filler 9 and the inner surface of the hole 13 in the second wooden member 5. Stress also occurs at the joint between the filler 9 and the first fixing member 23, the joint between the filler 9 and the second fixing member 31, and in the core material 19.

[0077] The impact force generates tensile stress in core material 19, causing core material 19 to temporarily stretch in the longitudinal direction, for example within its elastic limit, or to stretch by plastic deformation, thereby absorbing the energy of the impact force. This prevents peeling and damage to filler 9 at the joints between filler 9 and the inner surface of hole 11, between filler 9 and the inner surface of hole 13, between filler 9 and first fixing member 23, and between filler 9 and second fixing member 31.

[0078] Furthermore, the first wooden member 3 is fixed in place with the gap 37 filled with filler 9 as shown in Fig. 5, and an impact force (tensile impact load) indicated by arrow A1 in Fig. 4 is applied to the second wooden member 5. The filler 9 then peels off from the core member 19 at the joint between the core member 19 and filler 9, causing the core member 19 to temporarily stretch in the vertical direction, for example, within its elastic limit, or to stretch due to plastic deformation. The energy of the impact force is then absorbed.

[0079] The reason why the filler 9 peels off first from the core material 19 at the joint between the core material 19 and the filler 9 is because the outer diameter of the core material 19 is small and the area of ​​the joint between the core material 19 and the filler 9 (the joint in the shape of a cylindrical side surface) is small. Also, the reason why the filler 9 peels off first from the core material 19 at the joint between the core material 19 and the filler 9 is because the core material 19 stretches slightly in the longitudinal direction, which causes the outer diameter of the core material 19 to become slightly smaller in accordance with the Poisson's ratio.

[0080] 4. Instead of or in addition to the tensile impact load indicated by arrow A1 in Fig. 4, a moment indicated by arrow A2 in Fig. 4 (a moment equivalent to the impact load) is applied to the second wooden member 5. This also prevents peeling and damage to the filler 9 as described above, in the same way as in the case of the tensile impact load indicated by arrow A1.

[0081] In the member joining structure 1, the fixing portion 15 is inserted into a hole 11 (13) provided in the wooden member 3 (5) and is fixed to the wooden member 3 (5) via a filler 9, and one longitudinal end of the deforming portion 17 supports one longitudinal end of the fixing portion 15. In addition, the other longitudinal end side of the deforming portion 17 extends from the other longitudinal end of the fixing portion 15.

[0082] When this longitudinal tensile load (for example, an impact tensile load) is applied to the deformed portion 17, the deformed portion 17 temporarily undergoes elastic or plastic deformation due to the tensile load in order to reduce the stress applied to the joint between the fixing portion 15 and the filler 9, etc.

[0083] This reduces the stress at the joint between the filler 9 and the bonding material 7 and at the joint between the filler 9 and the wooden member 3(5), even when an impact force or other force is applied to the wooden member 3(5), thereby minimizing peeling of the filler 9.

[0084] Furthermore, the bonding material 7 supports only the longitudinal ends of the fixing portion 15 at the longitudinal ends of the deforming portion 17. This allows the length of the portion of the deforming portion 17 that elastically deforms to be longer than when the fixing portion 15 is supported over the entire longitudinal length of the deforming portion 17 at a portion of the longitudinal direction of the deforming portion 17, and the impact force can be sufficiently absorbed even if the bonding material 7 is shorter than that of the comparative example described below.

[0085] Here, a joining structure 301 of members according to a comparative example will be described with reference to FIG.

[0086] In the joining structure 301, one wooden member 309 having a hole 307 formed therein is joined to the other wooden member 313 having a hole 311 formed therein in such a manner that the hole 307 communicates with the hole 311, and the end face of the wooden member 309 is aligned with the end face of the wooden member 313.

[0087] In addition, in the joining structure 301, one longitudinal end of the male screw material 303 is inserted into the hole 307 of one wooden member 309, and the other longitudinal end of the male screw material 303 is inserted into the hole 311 of the other wooden member 313.

[0088] Furthermore, in the joint structure 301, adhesive 305 is filled between the holes 307, 311 and the male screw material 303. This increases the joint strength between the one wooden member 309 and the other wooden member 313. For example, even if a force (a force of a certain magnitude) shown by the arrows in Fig. 13 is applied to the wooden members 309, 313, the joint between the one wooden member 309 and the other wooden member 313 is maintained.

[0089] In the conventional joint structure 301, when a force (for example, an impact force) shown by the arrow in Fig. 13 is applied, there is a concern that the adhesive (filler) 305 may peel off at the joint between the male screw material 303 and the adhesive 305. There is also a concern that the adhesive (filler) 305 may peel off at the joint between the adhesive 305 and the wooden members 309 and 313. The reason for this is that the male screw material 303 does not elongate enough in response to the impact force, and is therefore unable to fully absorb the energy of the impact force. In order to fully absorb the energy of the impact force, it is necessary to modify the shape of the male screw material 303, such as by further increasing the length dimension of the male screw material 303.

[0090] The joining material 7 used in the joining structure 1 for members is configured to include a rod-shaped core material 19 and an intermediate material 21 formed in a cylindrical shape and installed in the middle of the longitudinal direction of the core material 19 so that the core material 19 passes through the intermediate material 21. The joining material 7 is also configured to include a first fixing member 23 and a first end member 25.

[0091] Here, the first fixing member 23 is formed in a cylindrical shape with irregularities formed on its outer peripheral surface, and is installed at one end side (first end side) in the longitudinal direction of the core material 19 so as to be penetrated by the core material 19 and contact the intermediate material 21. Also, the first end member 25 is installed on the core material 19 at one end side (first end side) in the longitudinal direction of the core material 19, further on the end side than the first fixing member 23, so as to be in contact with the first fixing member 23.

[0092] As a result, in the joining structure 1 for members using the joining material 7, when a force such as an impact force is applied to the wooden member 3 (5), the rod-shaped core material 19 elastically deforms in its longitudinal direction and temporarily extends, or extends by plastic deformation, thereby absorbing the energy of the impact force. In the joining structure 1 for members, stresses associated with the joints between the filler 9 and the joining material 7 and between the filler 9 and the wooden member 3 (5) are reduced, and peeling of the filler 9 is prevented as much as possible.

[0093] In the joining material 7, a first fixing member 23 and a second fixing member 31 are disposed at both longitudinal ends of the core material 19. This ensures the joining strength between the first wooden member 3 and the second wooden member 5 against forces such as impact when used to join the first wooden member 3 and the second wooden member 5. Furthermore, the presence of a portion located inside the first fixing member 23 and the second fixing member 31 ensures the length of the core material 19, allowing it to adequately absorb the energy of impact forces.

[0094] Incidentally, in the bonding material 7, the intermediate material 21 may be omitted.

[0095] That is, the bonding material 7 may be configured to include a rod-shaped core material 19, a first fixing member 23, and a first end member 25. Furthermore, the bonding material 7 may be configured to include a second fixing member 31 and a second end member 33.

[0096] Furthermore, in the joining structure 1 for members, as described above, the filler 9 does not have to be provided at the intermediate member 21. That is, the filler 9 may be filled only in the portion of the hole 11 in the first wooden member 3 where the first anchoring member 23 and the first end member 25 are inserted. Furthermore, the filler 9 may be filled only in the portion of the hole 13 in the second wooden member 5 where the second anchoring member 31 and the second end member 33 are inserted.

[0097] To explain further, the filler 9 may not be present in the portion of the hole 11 of the first wooden member 3 into which the intermediate material 21 has penetrated and in the portion of the hole 13 of the second wooden member 5 into which the intermediate material 21 has penetrated.

[0098] Here, a joining structure 1a of members according to a first modified example will be described with reference to FIGS.

[0099] In the member joining structure 1a, the shape of the hole 11 (13) in the wooden member 3 (5) and the shape of the intermediate material 21 in the joining material 7 are different from those in the member joining structure 1, but other parts are configured in the same way as the member joining structure 1.

[0100] That is, in the member joining structure 1a, the hole 11 of the first wooden member 3 has a small diameter portion 49 on the back side and a large diameter portion 51 on the front side. The hole 13 of the second wooden member 5 also has a small diameter portion 49 on the back side and a large diameter portion 51 on the front side.

[0101] Furthermore, the outer diameter of the intermediate member 21 is larger than the outer diameter of the first fixing member 23 and the outer diameter of the second fixing member 31.

[0102] A portion of the intermediate material 21 in the longitudinal direction is inserted into the large diameter portion 51 of the hole 11 of the first wooden member 3, and the remaining portion of the intermediate material 21 is inserted into the large diameter portion 51 of the hole 13 of the second wooden member 5. The first fixing member 23 and the first end member 25 are inserted into the small diameter portion 49 of the hole 11 of the first wooden member 3. In addition, the second fixing member 31 and the second end member 33 are inserted into the small diameter portion of the hole 13 of the second wooden member 5.

[0103] The filler 9 is filled in the small diameter portion 49 of the hole 11 of the first wooden member 3 and the small diameter portion 49 of the hole 13 of the second wooden member 5 .

[0104] In the member joining structure 1a, the outer diameter of the intermediate material 21 and the inner diameter of the large diameter portion 51 are the same, but the outer diameter of the intermediate material 21 may be slightly smaller than the inner diameter of the large diameter portion 51. In an embodiment in which the outer diameter of the intermediate material 21 is slightly smaller than the inner diameter of the large diameter portion 51, a very small gap is formed between the outer surface of the intermediate material 21 and the inner surface of the large diameter portion 51. This very small gap is not filled with the filler 9, and the very small gap is empty. Note that the filler 9 may be filled in the area of ​​the intermediate material 21 (the very small gap).

[0105] In the member joining structure 1a, the filler 9 is filled in the portion of the hole 11 of the first wooden member 3 where the first fixing member 23 and the first end member 25 are inserted. Also, the filler 9 is filled in the portion of the hole 13 of the second wooden member 5 where the second fixing member 31 and the second end member 33 are inserted. Furthermore, no filler 9 is present in the portion of the intermediate member 21.

[0106] This effectively prevents the filler 9 from overflowing from the holes 11 (13) of the wooden members 3 (5). Also, the joining surfaces of the first wooden member 3 and the second wooden member 5 can be made flat, making it possible to join the first wooden member 3 and the second wooden member 5 accurately and easily.

[0107] In addition, in the member joining structure 1a, a portion of the intermediate material 21 penetrates into the large diameter portion 51 of the hole 11 of the first wooden member 3, and the remaining portion of the intermediate material 21 penetrates into the large diameter portion 51 of the hole 13 of the second wooden member 5.

[0108] Here, if the outer diameter of the intermediate material 21 and the inner diameter of the large diameter portion 51 are made to match each other, it is possible to easily position the second wooden member 5 relative to the first wooden member 3. Also, it is possible to prevent the second wooden member 5 from shifting in position relative to the first wooden member 3.

[0109] In other words, when the first wooden member 3 is fixed and a force (height direction force) is applied to the second wooden member 5 in the direction indicated by arrow A3 in Figure 7, it is possible to prevent the second wooden member 5 from shifting position relative to the first wooden member 3.

[0110] Next, a second modified example of a joining structure 1b of members will be described with reference to FIG.

[0111] The component joining structure 1b differs from the component joining structure 1 in that a metal connector 53 is installed on the wooden component 3, but other parts are configured in the same way as the component joining structure 1.

[0112] That is, the member joining structure 1b is configured to include a joining material 7, a wooden member 3, and a metal connector 53. The other end (second end) in the longitudinal direction of the core material 19 of the joining material 7 is provided with an installation portion 57 that is installed on an installation portion 55 provided on the metal connector 53.

[0113] The installation portion 57 is configured with, for example, a male screw, and the male screw of the installation portion 57 is adapted to be screwed into an installation portion (for example, a female screw) 55 provided on the metal connector 53. In this way, the core material 19 (bonding material 7) is adapted to be installed integrally with the metal connector 53.

[0114] More specifically, the wooden member 3 has a hole 11. The intermediate member 21, the first fixing member 23, and the first end member 25 are inserted into the hole 11 of the first wooden member 3, and the installation portion 57 protrudes from the wooden member 3.

[0115] The installation portion 57 is installed on the installation portion 55 of the metal connector 53, and the metal connector 53 is in contact with the wooden member 3. The component of the joining material 7, the wooden member 3, and the metal connector 53 in the member joining structure 1b may be called a wooden member 81 with a joining material.

[0116] More specifically, rectangular parallelepiped cutouts are provided at the heightwise ends of the wooden member 3, as well as at both lateral ends. The metal connector 53 is formed in the shape of a rectangular frame having four sides, one of which has a female screw formed therein that constitutes the installation section 55. A through-hole 59 is formed in the other side opposite the side with the female screw formed therein.

[0117] When the male screw constituting the installation portion 57 has been completely threaded into the female screw constituting the installation portion 55, each of the two metal connectors 53 fits snugly into each of the two notches in the wooden member 3. As a result, the wooden member 3 with the metal connectors 53 installed has a rectangular prism shape with the notches removed. The wooden member 3 and the metal connectors 53 may also be attached to each other with an adhesive or the like.

[0118] In the member joining structure 1b, a wooden member 3 having a metal connector 53 attached thereto is to be installed on another structure 61 (for example, a concrete foundation).

[0119] More specifically, a male screw 63 protrudes from the top surface of the other structure 61. The male screw 63 is passed through a through-hole 59 of the metal connector 53 so that the metal connector 53 abuts against the top surface of the other structure 61, and the other side portion of the metal connector 53 is fastened with a nut 65. In this way, the wooden member 3 with the metal connector 53 installed thereon is installed integrally with the other structure 61.

[0120] By using the wooden member 81 with connecting material shown in Figure 9, the wooden member 3 can be firmly attached to another member 61 (for example, a structure such as concrete with protruding anchor bolts) using a metal connector 53.

[0121] Next, a third modified example of the joining structure 1c of members will be described with reference to Fig. 10(a). The third modified example of the joining structure 1c of members differs from the joining structure 1 of members in that it does not use a joining material that does not use a nut as the end member 25 (33), such as the joining material 7 shown in Fig. 5 etc.

[0122] That is, the joining material 7 used in the joining structure 1c of members is configured to include a columnar core material 19, a cylindrical fixing portion 15, and a connecting portion 67 that connects the core material 19 and the cylindrical fixing portion 15. Although not shown in Fig. 10(a), the fixing portion 15 has an outer peripheral surface formed with irregularities such as male threads.

[0123] The inner diameter of the cylindrical fixing portion 15 is larger than the outer diameter of the cylindrical core material 19. Half the length of the cylindrical core material 19 is larger than the length of the cylindrical fixing portion 15 (the length in the extension direction of the central axis).

[0124] The connecting portion 67 connects the longitudinal end of the core material 19 to the longitudinal end of the fixing portion 15. The central axis of the core material 19 and the central axis of the fixing portion 15 are aligned with each other. One fixing portion 15 of the pair of fixing portions 15 extends from one connecting portion 67 toward the longitudinal center of the core material 19. The other fixing portion 15 of the pair of fixing portions 15 extends from the other connecting portion 67 toward the longitudinal center of the core material 19.

[0125] The joining material 7 used in the joining structure 1c of the members is shown in Figure 10(a) as being integrally molded, but each part of the joining material 7 used in the joining structure 1c of the members may be molded separately and then attached appropriately by welding or the like.

[0126] Next, a fourth modified example of the joining structure 1d of members will be described with reference to Fig. 10(b). The fourth modified example of the joining structure 1d of members also differs from the joining structure 1 of members in that a nut is not used as the end member 25 (33).

[0127] In the member joining structure 1d, the joining material 7 is configured to include a columnar (e.g., cylindrical) small diameter portion 69 that constitutes the deformation portion 17 and a columnar (e.g., cylindrical) large diameter portion 71 that constitutes the fixing portion 15. The large diameter portion 71 is formed into a columnar (e.g., cylindrical) shape by a forging press or the like. The large diameter portion 71 is also provided at both longitudinal ends of the small diameter portion 69. Although not shown, the large diameter portion 71 also has irregularities formed thereon.

[0128] The large diameter portion 71 may be formed in the shape of a polygonal pillar. Examples of polygonal pillars include triangular pillars (for example, a regular triangular pillar whose bottom and top surfaces are equilateral triangles), quadrangular pillars (for example, a regular quadrangular pillar whose bottom and top surfaces are equilateral squares), and similarly, pentagonal pillars, hexagonal pillars, octagonal pillars, etc. The outer periphery of the large diameter portion 71 may also be smooth (multiple flat surfaces or a curved surface like the side surface of a cylinder) without forming any irregularities.

[0129] Next, a bonding material 7 according to a modified example will be described with reference to FIGS.

[0130] 11 is configured to include a stud bolt 75 having male threads 73 formed at both longitudinal ends, and a nut 77 that is threaded onto the male thread 73. The nut 77 is threaded onto the male thread 73 at the innermost side of the male thread 73 (the longitudinal center side of the stud bolt 75).

[0131] In the joining material 7 shown in Figure 11, the male thread 73 and nut 77 of the stud bolt 75 form the fixed portion 15, and the central portion of the stud bolt 75 (the portion where the male thread 73 is not formed) forms the deformed portion 17.

[0132] The bonding material 7 shown in Fig. 12(a) differs from the bonding material 7 shown in Fig. 11 in that a washer 83 is further provided in addition to the bonding material 7 shown in Fig. 11. The washer 83 is provided at the male thread 73 in contact with the nut 77 or slightly spaced from the nut 77 so that the stud bolt 75 passes through. The washer 83 is also located closer to the center of the stud bolt 75 in the longitudinal direction than the nut 77.

[0133] In the bonding material 7 shown in FIG. 12(a), one washer 83 and one nut 77 are provided on the male thread 73 at the lower left end of the bonding material 7. One washer 83 and two nuts 77 are provided on the male thread 73 at the upper right end of the bonding material 7, and the washer 83 is sandwiched between the two nuts 77. Note that in the bonding material 7 shown in FIG. 12(a), both ends in the longitudinal direction of the bonding material 7 may be configured so that one washer 83 and one nut 77 are provided on the male thread 73, or both ends in the longitudinal direction of the bonding material 7 may be configured so that one washer 83 and two nuts 77 are provided on the male thread 73.

[0134] The joining material 7 shown in Figure 12(b) differs from the joining material 7 shown in Figure 11 in that a nut 79 is further provided in addition to the joining material 7 shown in Figure 11. The nut 79 is threaded onto the male thread 73 at both longitudinal ends of the stud bolt 75. The nut 79 also forms the fixing portion 15.

[0135] Here, a description will be given of a case where a nut (e.g., a hexagonal nut) 77, 79, etc. is provided as shown in FIGS. 11 and 12 in an embodiment in which a large diameter portion 71 is provided as shown in FIG. 10(b). In this case, it is desirable that the finger pressure strength of the adhesive 9 relative to the catch area of ​​the large diameter portion 71 or the nut 77, 79, etc. is equal to or greater than the tensile strength and the yield strength. That is, it is desirable that the relationship be: finger pressure strength > tensile strength > yield strength. Here, the tensile strength is the strength ensured by the surface area of ​​the diameter of the hole 11 (13) into which the adhesive 9 is filled (or, if the hole is cylindrical, the side surface area of ​​the cylinder). The yield strength is the yield strength of the core material 19. By satisfying the relationship of finger pressure strength > tensile strength > yield strength, the steel core material 19 reaches its yield point strength before the joint between the large diameter portion 71 and the adhesive 9 is broken, which causes plastic deformation and prevents the large diameter portion 71 and the adhesive 9 from breaking and causing brittle fracture.

[0136] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment. [Explanation of symbols]

[0137] 1, 1a Joint structure of components 3. First Wooden Member 5 Second Wooden Member 7 Bonding material 9 Fillers 11, 13 holes 15 Fixing section 17 Deformation section 19 Core material 21 Intermediate materials 23 First fixing member 25 First end member 31 Second fixing member 33 Second end member 53 Metal Connectors 55 Installation part 57 Installed part 81 Wooden members with joints

Claims

1. a fixing portion that is inserted into a hole provided in the wooden member and fixed to the wooden member via a filler; a deformation portion that supports one end of the fixing portion in the longitudinal direction at one end in the longitudinal direction, and has a portion on the other end side in the longitudinal direction extending from the other end in the longitudinal direction of the fixing portion, and that elastically or plastically deforms due to a tensile load in the longitudinal direction in order to reduce stress applied to the joint between the fixing portion and the filler when the tensile load is applied in the longitudinal direction; and The deformation portion is composed of a core material formed in an elongated cylindrical shape, the fixing portion is configured to include a first fixing member that is separate from the core material and is formed in a cylindrical shape with an uneven outer surface, an inner diameter of the first fixing member is slightly larger than an outer diameter of the core material; the core penetrates the cylindrical first fixing member such that one longitudinal end of the core slightly protrudes from one longitudinal end of the first fixing member and the other longitudinal end of the core protrudes from both longitudinal ends of the first fixing member, and the first fixing member is disposed on one longitudinal end side of the core; A bonding material having a first end member that is separate from the core material and the first fixing member, and is in contact with the first fixing member and integrally installed on one end side of the core material in the longitudinal direction, further toward the end side than the first fixing member.

2. The core material, the first fixing member, and the first end member are separate bodies, and the core material has a cylindrical shape, one longitudinal end of which is in contact with the first fixing member, and the core material has an intermediate member which is installed in the middle of the core material so that the core material penetrates through the intermediate member; the fixing section is configured to include a second fixing member that is separate from the core material, the first fixing member, the first end member, and the intermediate material, is formed in a cylindrical shape, and has an uneven outer surface, one end of the second fixing member in the longitudinal direction is in contact with the intermediate member, the core penetrates the cylindrical second fixing member such that the other end of the core in the longitudinal direction slightly protrudes from the other end of the second fixing member in the longitudinal direction, and the second fixing member is disposed on the other end side of the core in the longitudinal direction; The bonding material according to claim 1, further comprising a second end member that is separate from the core material, the first fixing member, the first end member, the intermediate material, and the second fixing member, and is integrally installed on the core material at a longitudinal end side of the core material, further on the end side than the second fixing member, in contact with the second fixing member.

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