Truss structure element with mounting hole with tapered extension section and structure using this element

Abstract

The present invention relates to a truss structural element with a mounting hole having a tapered extension section and a structure utilizing this, and provides a truss structural element and a structure, wherein the truss structural element is able to firmly connect a truss structural element and a truss structural element or a truss structural element and a connecting element without any clearance, even if a gap is created between a fastening means and the mounting hole.For this purpose, the present invention provides a truss structure element comprising a mounting hole with a tapered extension section and a structure utilizing this, wherein the truss structure element is formed in a rod shape to form a truss structure of a desired shape by coupling it with another element, has a flange section having a planar structure formed on at least one of its two end sections, has a mounting hole through which the fastening means formed in the flange section is inserted, and the tapered extension section is formed around the mounting hole.

Description

Truss structural member including an assembly hole with a tapered extension formed therein and a structure using the same

[0001] The present invention relates to a truss structural member and a structure, and more particularly, to a truss structural member and a structure formed using the same, wherein the ends are formed to be joined to each other for forming a truss structure, the ends are formed with a flat flange portion, an assembly hole through which a fastener penetrates is formed in the flange portion, and a ring-shaped tapered extension portion is formed around the assembly hole, so that when the ends are joined to each other for forming a truss structure, the tapered extension portions overlap and are joined to each other so that there is no play and the load that the assembly hole can withstand is increased by distributing the applied stress.

[0002] In general, a truss structure is made up of a number of truss structural members in the shape of bars that are repeatedly connected to form a triangular structure to form the skeletal structure of the intended structure, and is used to construct large buildings such as bridges.

[0003] The truss structural members for forming the above truss structure are formed in a bar shape, and bolt holes for installing bolts for connecting truss structural members to each other or for fixing the truss structural members to a target object are formed at the ends of the truss structural members.

[0004] Meanwhile, when it is desired to connect truss structural members with bolt holes formed at the ends of the two truss structural members, the two truss structural members are arranged so that the bolt holes formed at the ends of the two truss structural members are aligned, and then the bolts are arranged so that they pass through the two bolt holes, and then a nut is fastened to the end of the bolt protruding through the two bolt holes, thereby connecting and fixing the two truss structural members to each other.

[0005] In order to smoothly perform the work of connecting truss structural members to each other by installing bolts in bolt holes formed at the ends of truss structural members, the diameter of the bolt holes is formed to be sufficiently larger than the diameter of the bolts, so that the bolt installation work can be easily performed even in work environments where it is difficult to secure a stable posture for bolt installation work.

[0006] However, if the diameter of the bolt hole is larger than the diameter of the bolt, a gap (G) is formed between the bolt hole (11) and the bolt (20) due to the difference in diameter between the bolt hole (11) and the bolt (20), and movement of the truss structural member (10) is possible within the range of the gap (G), so the truss structural member cannot be firmly connected to the truss structural member by only fastening the bolt and nut.

[0007] Furthermore, as can be seen in FIGS. 1 and 2, when a bolt (20) positioned to penetrate a bolt hole (10) is pushed in one direction of the bolt hole (10) and comes into contact with the bolt hole (10), the contact area between the surface of the bolt (20) and the inside of the bolt hole (10) is small, so a concentrated load is applied to that portion, causing deformation. If deformation occurs to the extent that the component cannot be reused, this not only increases the cost of replacing the component due to the inability to reuse the component, but also causes a problem of lowering the stability of the truss structure due to the occurrence of play.

[0008] In this way, conventional truss structural members have bolt holes formed sufficiently large in consideration of the convenience of bolt installation work, but because the bolt holes have an inner diameter larger than the diameter of the bolt, the truss structural members cannot be firmly connected to each other without play, causing problems such as structural defects in the truss structure and concentrated stress.

[0009] (Prior art literature)

[0010] (Patent Document)

[0011] (Patent Document 1) Patent Registration No. 10-1427764 (Published on August 8, 2014)

[0012] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a truss structural member and a structure in which a truss structural member and a truss structural member or a truss structural member and a connecting member are firmly connected without play even when a gap is formed between a fastening member and an assembly hole.

[0013] Another object of the present invention is to provide a truss structural member and structure that can improve the stress resistance of the joint between the truss structural member and the truss structural member or the truss structural member and the connecting member, thereby realizing a more structurally stable building, and that can not only be reused but also lead to a significant increase in the service life.

[0014] The present invention, which achieves the above-mentioned purpose and performs the task of eliminating the defects of the prior art, provides a truss structural member including an assembly hole formed with a tapered extension, characterized in that the truss structural member is formed in a bar shape so as to be coupled to each other to form a truss structure of a desired shape, a flat flange portion is formed at at least one of both ends, an assembly hole through which a fastener passes is formed in the flange portion, and a tapered extension portion is formed around the assembly hole.

[0015] Meanwhile, in the above truss structural member, the tapered extension is a ring structure extending along the periphery of the assembly hole, and has a cross-section that protrudes in an obliquely inclined posture from the periphery of the assembly hole toward the inside of the assembly hole, so that it is formed in a conical shape overall, and the inclined outer surface of the tapered extension is formed to face and closely contact the inclined inner surface of the tapered extension formed on another truss structural member, so that the tapered extensions of the truss structural members that are joined to each other to form a truss structure are overlapped with each other, and the truss structural members can be configured to be joined to each other in a structure without play.

[0016] In addition, the present invention provides a structure formed by combining the truss structural members to form a desired shape.

[0017] Meanwhile, in the above structure, a first support member having a hole formed in the center through which the fastener penetrates, a support groove formed in a conical shape continuously with the hole in the center of one side to form a first contact surface inclined in close contact with the inclined outer surface of the tapered extension, and disposed on the side of the flange portion so that the tapered extension is inserted into the support groove; and a second support member having a hole formed in the center through which the fastener penetrates, and a second contact surface formed in a conical shape to form a second contact surface inclined in close contact with the inclined inner surface of the tapered extension, and disposed on the side of the flange portion so that the second contact surface is inclined in close contact with the inner surface of the tapered extension may be further included.

[0018] Meanwhile, in the above structure, the fastening member is composed of a bolt and a nut, and one of the first support member and the second support member may be formed integrally with the head of the bolt constituting the fastening member, and the other may be formed integrally with the nut.

[0019] Meanwhile, in the above structure, a connecting member may further be included, which includes two or more planes inclined in different directions, and in which each plane is integrally formed with a screw column that penetrates an assembly hole of a truss structural member and is fastened with a nut, thereby connecting two or more truss structural members.

[0020] Meanwhile, in the above structure, the connecting member includes two planes, and the two planes can be formed symmetrically with respect to the center of the connecting member.

[0021] Meanwhile, in the above structure, the connecting member includes three planes, and the three planes can be formed to be positioned on each side of a triangle.

[0022] According to the present invention having the above-described characteristics, when truss structural members are joined to each other to form a truss structure, the flange portions formed on the truss structural members are pressed against each other while facing each other, and in addition, the tapered extension portions formed around the assembly holes are overlapped and joined to eliminate the gap between the truss structural members, so that the truss structural members can be joined to each other in a rigid structure, and through this, not only can a more structurally stable truss structure be implemented, but also the service life can be extended by minimizing damage or deformation of parts, and the possibility of reuse can be increased.

[0023] In addition, since the gap between truss structural members is eliminated without reducing the size of the assembly hole in which the fastener is installed, the gap between truss structural members can be prevented without a decrease in workability due to the reduction of the assembly hole.

[0024] Figure 1 is an example diagram showing a state in which a bolt is installed in a bolt hole formed in a conventional truss structural member.

[0025] Figure 2 is a cross-sectional view showing a state in which a conventional truss structural member is fastened by bolts and nuts.

[0026] Figure 3 is a perspective view showing an example of a structure according to the present invention;

[0027] Figure 4 is a perspective view showing another example of a structure according to the present invention;

[0028] Figure 5 is a perspective view showing another example of a structure according to the present invention;

[0029] Figure 6 is a perspective view of a truss structural member according to a preferred embodiment of the present invention;

[0030] Figure 7 is a cross-sectional view of a flange portion of a truss structural member according to a preferred embodiment of the present invention;

[0031] Figure 8 is a perspective view showing a state before a plurality of truss structural members are combined according to a preferred embodiment of the present invention.

[0032] Figure 9 is a perspective view showing a state in which a plurality of truss structural members are combined according to a preferred embodiment of the present invention.

[0033] Figure 10 is a cross-sectional view showing a state before a plurality of truss structural members are combined according to a preferred embodiment of the present invention.

[0034] Figure 11 is a cross-sectional view showing a state in which a plurality of truss structural members are combined according to a preferred embodiment of the present invention;

[0035] Figure 12 is a perspective view of a connecting member according to the present invention;

[0036] Figure 13 is a perspective view showing the joint structure of a connecting member and a truss structural member according to the present invention.

[0037] Figure 14 is a perspective view of another connecting member according to the present invention;

[0038] Figure 15 is a perspective view showing a joint structure of another connecting member and a truss structural member according to the present invention.

[0039] (Explanation of symbols)

[0040] (Explanation of symbols for major parts of the drawing)

[0041] 110: Truss structural member 111: Flange section

[0042] 112: Assembly hole 113: Taper extension

[0043] 113a: Exterior 113b: Interior

[0044] 120: First support member 121: Hole

[0045] 122: Support home 123: First response surface

[0046] 131: Second support member 132: Second response surface

[0047] 140: Fastener 141: Bolt

[0048] 142: Nut 150: Connecting member

[0049] 151: Flat surface 152: Screw column

[0050] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. In describing the present invention, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, such detailed description will be omitted.

[0051] FIG. 3 is a perspective view showing an example of a structure according to the present invention, FIG. 4 is a perspective view showing another example of a structure according to the present invention, FIG. 5 is a perspective view showing another example of a structure according to the present invention, FIG. 6 is a perspective view of a truss structural member according to a preferred embodiment of the present invention, FIG. 7 is a cross-sectional view of a flange portion of a truss structural member according to a preferred embodiment of the present invention, FIG. 8 is a perspective view showing a state before a plurality of truss structural members are combined according to a preferred embodiment of the present invention, FIG. 9 is a perspective view showing a state before a plurality of truss structural members are combined according to a preferred embodiment of the present invention, FIG. 10 is a cross-sectional view showing a state before a plurality of truss structural members are combined according to a preferred embodiment of the present invention, FIG. 11 is a cross-sectional view showing a state before a plurality of truss structural members are combined according to a preferred embodiment of the present invention, FIG. 12 is a perspective view of a connecting member according to the present invention, FIG. 13 is a perspective view showing a state before a connecting member and a truss structural member are combined according to the present invention, and FIG. 14 is a cross-sectional view showing a state before a connecting member and a truss structural member are combined according to the present invention. Another perspective view of a connecting member, Fig. 15 shows a perspective view showing the joint structure of another connecting member and a truss structural member according to the present invention.

[0052] The truss structural member (110) according to the present invention is configured such that a plurality of members are combined to form a certain shape to form a small truss structure such as a vinyl house or a livestock house, and a large truss structure such as a bridge pier, and the tapered extension portion (113) formed on the truss structural member (110) is combined in a form that overlaps each other when the truss structural members (110) are combined, thereby preventing a gap from occurring at the connection portion between the truss structural members (110) and, in addition, preventing stress from being concentrated in a specific portion.

[0053] Meanwhile, a truss structural member (110) according to a preferred embodiment of the present invention is formed in the form of a bar having a constant length, and a flat plate-shaped flange portion (111) is formed at one end or both ends, an assembly hole (112) penetrating the flange portion (111) is formed at the center of the flange portion (111), and a tapered extension portion (113) is formed around the assembly hole (112).

[0054] The above-mentioned tapered extension (113) has a ring structure extending along the periphery of the assembly hole (112), and has a cross-section that protrudes in an obliquely inclined position from the periphery of the assembly hole (112) toward the inside of the assembly hole (112), thereby forming an overall cone shape while gradually reducing the opening area of ​​the assembly hole (112).

[0055] In the tapered extension (113) formed in a cone shape like this, the inclined outer surface (113a) is formed to be in close contact with the inclined inner surface (113b) of the tapered extension (113) formed on another truss structural member (110), and according to this structure, the inclined inner surface (113b) of the tapered extension (113) is in close contact with the inclined outer surface (113a) of the tapered extension (113) formed on another truss structural member (110).

[0056] In this way, the tapered extension portions (113) formed in the flange portion (111) are joined while covering each other when the truss structural members (110) are joined, and the multiple tapered extension portions (113) joined to each other have their inclined outer surfaces (113a) and inner surfaces (113b) closely adhere to each other and are joined without a gap, thereby preventing a gap from occurring between the truss structural members (110) and the truss structural members (110).

[0057] The truss structural member (110) as described above can be manufactured by forming a flange portion (111) by pressing the end of a circular pipe into a flat plate-like structure, and punching an assembly hole (112) in the center of the flange portion (111), and processing the assembly hole (112) so that the perimeter of the assembly hole (112) is transformed into the shape of a tapered extension portion (113) when the assembly hole (112) is punched.

[0058] FIG. 3 illustrates a dome-shaped truss structure constructed using a truss structural member according to the present invention, FIG. 4 illustrates a rectangular truss structure constructed using a truss structural member according to the present invention, and FIG. 5 illustrates a triangular prism-shaped truss structure constructed using a truss structural member according to the present invention.

[0059] The structure according to the present invention is constructed using the truss structural member (110) as described above, and a structure having a desired shape is formed by repeatedly forming a triangular structure while expanding a plurality of truss structural members (110).

[0060] Meanwhile, in the process of joining truss structural members (110) to form a structure, a first support member (120) and a second support member (130) may be further included to support a tapered extension portion (113) formed to protrude from a flange portion (111) so that the truss structural members (110) can be joined more stably.

[0061] The above first support member (120) is configured to support the tapered extension (113) by being in close contact with the inclined outer surface (113a) of the tapered extension (113) while accommodating the tapered extension (113) protruding from the flange portion (111) inside, and is configured to have a ring structure in which a hole (121) through which a fastener (140) passes is formed in the center, and a support groove (122) into which the tapered extension (113) is inserted is formed in the center of one side to be connected to the hole (121).

[0062] Meanwhile, the above support groove (122) is configured to be sunken into a conical structure and form an inclined first contact surface (123) that is in close contact with the inclined outer surface (113a) of the tapered extension (113).

[0063] The first support member (120) configured in this manner is placed on the side of the flange portion (111) so that the tapered extension portion (113) is inserted into the interior of the support groove (122).

[0064] The above second support member (130) supports the inclined inner surface (113b) of the tapered extension (113), has an overall conical shape, and is formed as a ring structure in which a hole (131) through which a fastener (140) passes is formed in the center, and is configured to include a second corresponding surface (132) inclined to be in close contact with the inclined inner surface (113b) of the tapered extension (113).

[0065] Meanwhile, the hole (131) formed in the second support member (130) is formed to completely penetrate the second support member (130).

[0066] The second support member (130) configured in this manner is placed on the side of the flange portion (111) so that the second contact surface (132) is in close contact with the inner surface (113b) of the tapered extension portion (113).

[0067] In the end, the first support member (120) and the second support member (130) are arranged to face each other with the flange portion (111) in between, so as to support the tapered extension portion (113) on both sides, and are fixed together with the flange portion (111) by the fastener (140).

[0068] Meanwhile, the above fastener (140) is composed of a bolt (141) and a nut (142), and one of the first support member (120) and the second support member (130) may be formed integrally with the head of the bolt (141), and the other may be formed integrally with the nut (142).

[0069] In the process of constructing a structure by connecting a plurality of truss structural members (110) using the truss structural member (110) configured as described above, the first and second support members (120, 130), and the fasteners (140), a connecting member (150) that connects the truss structural members (110) to each other in a structure in which the truss structural members (110) are bent at a certain angle may be further included.

[0070] The above connecting member (150) is made of a block including two or more planes (151) inclined in different directions, and the number of planes (151) and the inclined direction or angle of the planes (151) can be manufactured differently depending on the number of truss structural members (110) to be connected and the connecting direction or angle between the truss structural members (110).

[0071] In addition, a screw pillar (152) formed in the plane (151) formed in the above connecting member (150) is integrally formed to penetrate the assembly hole (112) of the flange portion (111) and be fastened with a nut (142).

[0072] Meanwhile, FIG. 12 shows a structure of a connecting member (150) including two planes (151), wherein the two planes (151) are formed symmetrically with respect to the center of the connecting member (150) to connect a plurality of truss structural members (110).

[0073] Also, FIG. 14 shows a structure of a connecting member (150) that includes three planes (151), and is formed to be positioned at positions corresponding to each side of a triangle of the three planes (151) to connect a plurality of truss structural members (110).

[0074]

[0075] Below, the process of forming a structure using a truss structural member (110) and first and second support members (120, 130) and a connecting member (150) according to the present invention will be described.

[0076] The structure according to the present invention is formed by, like a general truss structure, combining a plurality of truss structural members (110) to form a polygonal structure repeatedly, and when combining truss structural members (110) with truss structural members (110), tapered extensions (113) are overlapped, and the overlapped tapered extensions (113) are firmly combined with each other by fastening of bolts (141) and nuts (142) constituting fasteners (140), thereby preventing a gap from occurring between truss structural members (110) and truss structural members (110).

[0077] More specifically, when two truss structural members (110) according to the present invention are to be connected to each other, the two truss structural members (110) are first arranged so that the flange portions (111) formed on the two truss structural members (110) are in close contact with each other, and the tapered extension portion (113) formed on one truss structural member (110) is inserted into the tapered extension portion (113) formed on the other truss structural member (110), so that the two tapered extension portions (113) are overlapped.

[0078] Afterwards, the first support member (120) is placed on one side of the flange portion (111) so that the tapered extension portion (113) protruding in one direction of the two closely attached flange portions (111) is inserted into the support groove (122) of the first support member (120), and the second support member (130) is placed on the other side of the flange portion (111) so that the second contact surface (132) of the second support member (130) is inserted into the inside of the tapered extension portion (113) and is in close contact with the inner surface (113b) of the tapered extension portion (113), and the bolt (141) sequentially passes through the assembly hole (112) of the first support member (120) and the two flange portions (111) and the second support member (130) and is then fastened with the nut (142), thereby combining the two truss structural members (110).

[0079] In this way, the tapered extensions (113) formed on the two truss structural members (110) are overlapped with each other, and the first support member (120) and the second support member (130) are arranged on both sides. When the first support member (120) and the second support member (130) are pressed by the fastening of the bolt (141) and the nut (142), the two tapered extensions (113) are tightly and tightly fixed, so that the two truss structural members (110) can be firmly connected without movement.

[0080] Meanwhile, even in cases where two or more truss structural members (110) are to be connected at one point as shown in FIGS. 8 to 11, a plurality of truss structural members (110) can be connected to each other in the same manner as described above.

[0081] Meanwhile, when connecting a plurality of truss structural members (110) using a connecting member (150) having two planes (151) formed, first, a first support member (120) or a second support member (130) is installed on a screw column (152) formed on each plane (151) of the connecting member (150), and the first support member (120) or the second support member (130) is installed so that the support groove (122) formed on the first support member (120) or the second contact surface (132) formed on the second support member (130) is positioned in a direction facing the flange portion (111) of the truss structural member (110) to be connected to the connecting member (150).

[0082] In the following description, it is assumed that the first support member (120) is installed on a plane (151).

[0083] When the installation of the first support member (120) is completed, the truss structural member (110) is installed on each of the two planes (151) such that one side of the flange portion (111) formed on the truss structural member (110) faces the plane (151), and the position of the truss structural member (110) is adjusted so that the protruding tapered extension portion (113) is inserted into the support groove (122), and the screw column (152) of the connecting member (150) passes through the assembly hole (112) formed on the flange portion (111).

[0084] At this time, the number of truss structural members (110) installed on each screw column (152) may vary depending on the shape of the intended structure.

[0085] Afterwards, a second support member (130) is installed on the outside of the truss structural member (110) installed on the screw column (152), and the second support member (130) is installed so that the second contact surface (132) formed on the second support member (130) is inserted into the inside of the tapered extension (113) formed on the truss structural member (110).

[0086] Afterwards, the truss structural member (110) is fixed to the connecting member (150) by fastening a nut (142) to a screw column (152) protruding through the second support member (130).

[0087] In the above manner, a structure having the desired structure is formed by connecting truss structural members (110) to each other or connecting truss structural members (110) to truss structural members (110) via a connecting member (150).

[0088] As described above, the truss structural member and structure according to the present invention is a very useful invention that, in connecting and fixing the truss structural member (110) to each other, does not simply rely on the fastening force of bolts and nuts, but rather, through the combination of the tapered extension (113) and the tapered extension (113) and the combination of the tapered extension (113) and the support member (120, 130), fixes the truss structural member (110) to the truss structural member (110) into a rigid structure without any play, and distributes the impact or load acting on the truss structural member (110) and the connection member (150) through the support member and the tapered extension (113), thereby preventing the stress from being concentrated on a specific area, thereby enabling the implementation of a structurally more stable truss structure.

[0089] In the past, bolts connecting truss structural members to each other were subjected to considerable stress due to impact or load applied to the joint of the truss structural members, and a phenomenon occurred in which stress was concentrated as the bolt and the hole came into local contact due to a gap caused by the tolerance between the bolt and the hole. In contrast, in the present invention, the bolt has only a purely fastening function, and the tapered extension portion (113) formed around the assembly hole (112) provides a function of firmly connecting the truss structural members (110) to each other without tolerance, thereby minimizing deformation of the truss structural members and enabling reuse after disassembly, thereby ensuring economic efficiency.

[0090]

[0091] The present invention is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the invention pertains can make various modifications without departing from the gist of the present invention as claimed in the claims, and such modifications are within the scope of the claims.

Claims

1. A truss structural member including an assembly hole in which a tapered extension is formed, characterized in that the truss structural member is formed in the shape of a bar so as to form a truss structure of a desired shape when combined with each other, and a flat flange portion (111) is formed at at least one of the two ends, an assembly hole (112) through which a fastener (140) passes is formed in the flange portion (111), and a tapered extension portion (113) is formed around the assembly hole (112).

2. In claim 1, The above-mentioned tapered extension (113) is a ring structure extending along the periphery of the assembly hole (112), and has a cross-section that protrudes in an obliquely inclined posture toward the inside of the assembly hole (112) from the periphery of the assembly hole (112) to form a cone shape overall, and the tapered extension (113) is formed so that the inclined outer surface (113a) of the tapered extension (113) faces the inclined inner surface (113b) of the tapered extension (113) formed on another truss structural member (110) and is formed in close contact with each other, so that the tapered extensions (113) of the truss structural members (110) that are joined to each other to form a truss structure are overlapped with each other, and the truss structural members (110) are joined to each other in a structure without play. A truss structural member including an assembly hole in which a tapered extension is formed.

3. A structure using a truss structural member including an assembly hole having a tapered extension formed therein, characterized in that the truss structural members according to claim 1 or claim 2 are formed by being joined to each other to form a shape for a purpose.

4. In claim 3, A first support member (120) having a hole (121) formed in the center portion through which the fastener (140) passes, a support groove (122) formed in a conical structure to form a first contact surface (123) that is inclined to be in close contact with the inclined outer surface (113a) of the tapered extension (113) and is formed continuously with the hole (121) in the center portion of one side, and arranged on the side of the flange portion (111) so that the tapered extension (113) is inserted into the support groove (122); and A structure using a truss structural member including an assembly hole in which a tapered extension is formed, characterized in that the structure further includes a second support member (130) formed in a cone shape so as to include a second contact surface (132) that is inclined to be in close contact with the inclined inner surface (113b) of the tapered extension (113), and is arranged on the side of the flange portion (111) so that the second contact surface (132) is in close contact with the inner surface (113b) of the tapered extension (113).

5. In claim 4, The above fastener (140) is composed of a bolt (141) and a nut (142). A structure using a truss structural member including an assembly hole having a tapered extension formed therein, characterized in that one of the first support member (120) and the second support member (130) is formed integrally with the head of a bolt (141) constituting a fastener (140), and the other is formed integrally with the nut (142).

6. In claim 3, A structure using a truss structural member including an assembly hole in which a tapered extension is formed, characterized in that it further includes a connecting member (150) that connects two or more truss structural members (110) by including two or more planes (151) inclined in different directions, and in which a screw column (152) that penetrates an assembly hole (112) of a truss structural member (110) and is fastened with a nut (142) is integrally formed in each of the planes (151).

7. In claim 6, A structure using a truss structural member including an assembly hole in which a tapered extension is formed, characterized in that the above connecting member (150) includes two planes (151), and the two planes (151) are formed symmetrically with respect to the center of the connecting member (150).

8. In claim 6, A structure using a truss structural member including an assembly hole in which a tapered extension is formed, characterized in that the above connecting member (150) includes three planes (151), and the three planes (151) are formed so as to be positioned on each side of a triangle.

Images