JP2007154924A - Constituent material coupling structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a constituent material coupling structure by which first and second constituent materials can be coupled with a small number of parts and with a simple structure. <P>SOLUTION: By inserting threaded members into a second sleeve which is inserted into a third through hole of a second coupling body to be arranged therein, a first sleeve which is inserted into a first through hole of the second constituent material to be arranged therein, and a second through hole of a first coupling body to be engaged with a female screw provided in the second through hole, the first and second constituent materials can be coupled together. Thus, a desired coupling structure can be obtained with the small number of parts and with a simple structure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a coupling structure for a structural material in which the first structural material and the second structural material in which an engagement groove is formed are to be coupled, and the second structural material is brought into contact with and connected to and fixed to the first structural material. In particular, the present invention relates to a device devised so that a desired coupling structure can be obtained with a simple structure with a small number of parts.

For example, frames of various machine tools and the like are constructed by combining aluminum structural materials. The coupling structure at that time is, for example, as follows. First, the end surface of the second structural material is abutted against the outer surface of the first structural material, and a substantially triangular bracket is attached to the corner portion of the abutting portion with a set screw.

Another coupling structure is as follows. First, the combined body is fitted into the dovetail groove on the first structural material side. An end portion of the combined body projects and is arranged outward from the dovetail groove. On the other hand, the end surface of the second structural material is abutted against the outer surface of the first structural material. At that time, the end of the combined body is positioned in the dovetail of the second structural member. In this state, the end of the combined body is attached to a fixed position in the dovetail groove of the second structural member by a set screw.

However, such a bonded structure has the following problems. First, in the case of the former example using a bracket, the number of set screws increases because the bracket is attached to each of the first and second structural members using set screws, and as a result, a large number of set screws. There is a problem that a work to be screwed with a tightening tool such as a hexagon wrench is required, which requires a lot of labor and a long work time.

In addition, since both of the connecting structures are attached to the outer surface of the first structural material with the end face of the second structural material while attaching the bracket or the combined body with a set screw, the stability of both structural materials at the time of connection is improved. Therefore, there is a problem that workability in the joining work of the first structural material and the second structural material is poor.

Therefore, as a solution to such a problem, for example, a structural material coupling structure as disclosed in Patent Document 1 has been proposed. This is due to the applicant of the present patent.

Japanese Patent Laid-Open No. 20002-61302

  The conventional configuration has the following problems. In other words, according to the structure-bonding structure disclosed in Patent Document 1, although the above-described problems can be solved, further improvements are required. In particular, there is a demand for reducing the number of parts, which is required to facilitate the joining work and improve workability.

The present invention has been made on the basis of the above points, and the object of the present invention is to have a structure in which the first structural material and the second structural material can be coupled with a small number of parts and with a simple structure. It is to provide a bonded structure of materials.

In order to achieve the above object, the structural material coupling structure according to claim 1 of the present invention includes a first structural material provided with an engaging groove and a second structural member provided with at least a pair of engaging grooves extended and formed in the longitudinal direction. A structural material, and the end surface of the second structural material is brought into contact with the side of the first structural material on which the engagement groove is provided to couple the first structural material and the second structural material And a first sleeve inserted and arranged in a first through hole provided between a pair of engagement grooves of the second structural material, and the first sleeve on one end side of the first through hole. A first combined body having a second through-hole engaged and disposed in an engagement groove of two structural members and an engagement groove of the first structural member; and the second structure on the other end side of the first through-hole. A second combined body having a third through-hole engaged and disposed in the engaging groove of the material and the engaging groove of the first structural material; and a second combination of the second combined body The second sleeve inserted and disposed in the through hole, the second sleeve inserted and disposed in the third through hole of the second combined body, and the first sleeve of the second structural member. A screw member that joins the first structural member and the second structural member by being screwed into a female screw portion that is inserted into the second through hole of the first sleeve and the first combined body and provided in the second through hole. It is characterized by comprising.
According to a second aspect of the present invention, there is provided the structural member coupling structure according to the first aspect, wherein a convex portion is formed on the first sleeve side of the second through hole of the first combined body. A taper portion that gradually decreases in diameter toward the first sleeve side is formed on the first sleeve side of the convex portion, and is similarly inserted and disposed in the third through hole of the second combined body. A convex portion is formed on the first sleeve side of the second sleeve, and a tapered portion that is gradually reduced in diameter toward the first sleeve side is formed on the first sleeve side of the convex portion. On the other hand, at both ends of the first sleeve, a pair of taper portions that are gradually reduced in diameter so as to face the taper portion on the first combined body side and the taper portion of the second sleeve are formed. The first screw is engaged by screwing the screw member. The first structural member and the second structural member are fastened and fixed by the action of the tapered portion at both ends of the groove, the tapered portion on the first combined body side, and the tapered portion of the second sleeve. It is what.
According to a third aspect of the present invention, there is provided the structural member coupling structure according to the first or second aspect, wherein the second coupling body is provided with a recess for concealing the head of the screw member. It is characterized by this.

As described above in detail, according to the structural material coupling structure of the present invention, the first structural material provided with the engaging grooves, and the second structural material provided with at least one pair of engaging grooves extended and formed in the longitudinal direction, A structural material that joins the first structural material and the second structural material by bringing the end surface of the second structural material into contact with the side of the first structural material on which the engagement groove is provided. A first sleeve inserted and arranged in a first through hole provided between a pair of engaging grooves of the second structural material, and the second structural material on one end side of the first through hole. Between the engagement groove of the first structural member and the engagement groove of the first structural member, the second combined member provided with the second through hole, and the second structural member on the other end side of the first through hole. A second combined body having a third through-hole engaged and disposed in the engaging groove and the engaging groove of the first structural member; and in the third through-hole of the second combined body A second sleeve inserted and disposed; a second sleeve inserted and disposed in a third through hole of the second combined body; and a first sleeve inserted and disposed in a first through hole of the second structural member. A screw member that is inserted into the second through-hole of the first combined body and screwed into a female screw portion provided in the second through-hole to couple the first structural material and the second structural material; Since the above configuration is adopted, it is possible to obtain a desired coupling structure with a small number of parts and a simple configuration. That is, the number of parts is only the first sleeve, the second sleeve, the first combined body, the second combined body, and the screw member, and a desired combined structure can be obtained by simply setting these components in succession and screwing the screw members together. Can be obtained. Therefore, disassembly / assembly can be facilitated without requiring much labor and long time.
In particular, since the second sleeve is provided separately on the second combined body side, the first combined body and the second combined body are not set in an inclined state.
Incidentally, when the first structural member and the second structural member are bonded and fixed in a state where the first combined body or the second combined body is inclined, the inclination of the first combined body or the second combined body is an external force. At the time when the first structural material and the second structural material are solved by the above action, the connection / fixed state between the first structural material and the second structural material is loosened. On the other hand, in the case of the present invention, as described above, the first combined body and the second combined body are not set in an inclined state. Can be prevented.
Further, a convex portion is formed on the first sleeve side of the second through hole of the first combined body, and the diameter of the convex portion is gradually reduced toward the first sleeve side on the first sleeve side. Similarly, a convex portion is formed on the first sleeve side of the second sleeve inserted and arranged in the third through hole of the second combined body. The first sleeve side is formed with a tapered portion that gradually decreases in diameter toward the first sleeve side, while the first combined body side tapered portion and the second sleeve are formed at both ends of the first sleeve. By forming a pair of taper portions that are gradually reduced in diameter so as to face the taper portions of the first sleeve and screwing the screw members, the taper portions at both ends of the first sleeve and the tape By the action of the tapered portion on the first combined body side and the tapered portion of the second sleeve, The a first structural material in the case where the second structural member is constructed as will be fastened and fixed are those which can be obtained a strong bond structure with a simple configuration.
Moreover, when the recessed part where the head of the said screw member is hidden is formed in the said 1st coupling body, exposure of the head of a screw member can be prevented.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2, first, there is a first structural material 1. As shown in FIGS. 3 and 4, the first structural member 1 has a cubic shape and a hollow shape. A square opening 3 is formed on each surface. Further, T-shaped engagement recesses 5 and 5 are formed on a pair of sides of each surface, and engagement recesses 7 and 7 are formed on the remaining pair of sides.
FIG. 1 shows a state before assembling and fixing each component described later, and FIG. 2 shows a state after joining and fixing.

  The second structural member 11 is in contact with and arranged with respect to the first structural member 1 having the above configuration. The second structural member 11 has a quadrangular cross-sectional shape, and a through hole 13 is formed at the center. Further, T-shaped engaging recesses 15 are formed on the four sides, respectively. The through holes 13 and the T-shaped engagement recesses 15 are continuously extended and formed along the longitudinal direction. Further, a coupling through hole (first through hole) 17 is provided at a predetermined position at an end of the second structural member 11 in a direction orthogonal to the through hole 13 and the T-shaped engaging recess 15. Perforated. Further, notches 16, 16 having a circular shape are formed at the edges of the T-shaped engaging recesses 15, 15 on both sides of the coupling through-hole 17.

Next, the configuration of each component used when the second structural member 11 is bonded and fixed by contacting and arranging the second structural member 11 with respect to the first structural member in a predetermined positional relationship will be sequentially described.
First, as shown in FIGS. 1 and 2, there is a first sleeve 21, and the first sleeve 21 is inserted and disposed in the coupling through-hole 17 provided in the second structural member 11. As shown in FIG. 7, tapered portions 23, 23 are formed at both ends of the first sleeve 21, and the tapered portions 23, 23 gradually increase in inner diameter toward the outside. It has a shape.

As shown in FIGS. 1 and 2, a first combined body 25 is installed outside the first sleeve 21. As shown in FIG. 5, the first combined body 25 includes a rod body portion 27, and the rod body portion 27 has a quadrangular cross-sectional shape. A cylindrical engagement portion 29 is provided on one end side (upper end side in the figure) of the rod body portion 27 in the longitudinal direction. The cylindrical engaging portion 29 has a hollow shape and includes a through hole (second through hole) 31. Further, a tapered portion 33 is provided on the cylindrical sleeve 29 on the first sleeve 21 side. The tapered portion 33 is formed such that its outer diameter is gradually reduced toward the first sleeve 21 side. Further, a T-shaped engaging portion 35 is formed at the other end (the lower end side in the drawing) of the rod body portion 27.

And the 1st coupling body 25 which makes the said structure is engaged in the engagement recessed part 15 of the 2nd structural material 11, and the T-shaped engagement recessed part 5 of the 1st structural material 1. FIG. That is, the main body of the rod portion 27 is engaged in the engagement recess 15 of the second structural member 11, and the T-shaped engagement portion 35 at the lower end is the T-shaped engagement recess 5 of the first structural member 1. Will be engaged.

As shown in FIGS. 1 and 2, a second combined body 41 is disposed on the opposite side of the first combined body 25 with the first sleeve 21 and the second structural member 11 interposed therebetween. This 2nd coupling body 41 is provided with the rod part 43, as shown also in FIG. The rod body portion 43 has a quadrangular cross-sectional shape. A cylindrical engagement portion 45 is provided on one end side (upper end side in the drawing) of the rod body portion 41. The cylindrical engagement portion 45 has a hollow shape and includes a through hole (third through hole) 47. A tapered recess 49 is formed on the outer side of the cylindrical engagement portion 45. The tapered recess 49 is formed so that its inner diameter gradually increases outward. A T-shaped engaging portion 51 is formed at the other end (lower end side) of the rod portion 43.

A second sleeve 61 is inserted and disposed in the through hole 47 of the cylindrical engagement portion 45. As shown in FIG. 8, the second sleeve 61 has a hollow shape and includes a through hole 63. Further, a flange 65 is formed at the tip of the second sleeve 61, and a taper 67 is provided on the flange 65. The tapered portion 67 has a shape such that the outer diameter is gradually reduced toward the first sleeve 21 already described.

And the 2nd coupling body 41 which comprises the said structure is engaged in the engagement recessed part 15 of the 2nd structural material 11, and the T-shaped engagement recessed part 5 of the 1st structural material 1. FIG. That is, the main body of the rod body 43 is engaged in the engagement recess 15 of the second structural member 11, and the T-shaped engagement portion 51 at the lower end is the T-shaped engagement recess 5 of the first structural member 1. Will be engaged.

Further, as shown in FIG. 5A, a female screw portion 71 is formed in the through hole 31 of the cylindrical engagement portion 29 of the first combined body 25 already described. On the other hand, a screw member 73 is inserted and arranged from the outside of the second combined body 41 and screwed into the female screw portion 71. As a result, the second structural member 11 is bonded and fixed to the first structural member 1.
The screw member 71 has a head 73, and the head 73 is buried in the tapered recess 49 and is not exposed to the outside.

Further, a closing member 81 as shown in FIG. 9 is attached to each opening 3 of the first structural member 1. The closing member 81 includes a lid 83, a stopper member 85 disposed inside the lid 83, and a screw member 87 inserted from the lid 83 side and screwed into the stopper member 85. Has been. The stopper member 85 is formed with a flange 89. The screw member 87 is screwed by engaging the closing member 81 having the above configuration with the opening 3. Initially, the stopper member 85 also rotates, but its rotation is restricted by contacting the inner wall 3a (shown in FIG. 2) inside the opening 3. In this state, the stopper member 85 is pulled up by further screwing the screw member 87, so that the flange 89 is engaged and fixed to the inner wall 3b (shown in FIG. 2) of the opening 3. It will be.

The operation will be described based on the above configuration.
First, the first sleeve 21 is inserted and arranged in the coupling through hole 17 of the second structural member 11. Next, the second structural member 11 is brought into contact with and disposed at a predetermined position of the first structural member 1. Then, the first combined body 25 is engaged with the engagement recess 15 of the second structural member 11 and the T-shaped engagement recess 5 of the first structural member 1. On the other hand, on the opposite side, the engagement recess 15 of the second structural member 11 and the T-shaped engagement recess 5 of the first structural member 1 with the second sleeve 61 inserted and disposed in the second combined body 41. Engage in.

Next, the screw member 73 is inserted from the second coupling body 41 side and is screwed into the female thread portion 71 of the cylindrical engagement portion 29 of the first coupling body 25. Accordingly, the first combined body 25 and the second combined body 41 are tightened while being pulled up. By tightening the first combined body 25 and the second combined body 41, the first structural member 1 is pulled up to the second structural member 11 side. As a result, the first structural member 1 and the second structural member 11 are strengthened. It will be combined and fixed to. Next, each opening 3 of the first structural member 1 is closed by the closing member 81.
The above operation completes the operation of joining and fixing the second structural member 11 to the first structural member 1.

  The joining / fixing operation will be described in more detail. First, by screwing the screw member 73, the second sleeve 61 and the first sleeve 21 are slid together. That is, the second combined body 41 is pulled upward by the sliding action of the tapered portion 65 of the second sleeve 61 and the tapered portion 23 of the first sleeve 21. At the same time, the first sleeve 21 is pushed by the second sleeve 61 and moves to the first combined body 25 side. Thereby, a sliding action is performed by the tapered portion 23 on the opposite side of the first sleeve 21 and the tapered portion 33 on the first combined body 25 side. Thereby, the second combined body 25 is pulled upward. When the second combined body 41 and the first combined body 25 are pulled upward, the first structural member 1 is pulled up to the second structural member 11 side, and is bonded and fixed.

In that case, since the 2nd coupling body 41 and the 2nd sleeve 61 are provided in the 2nd coupling body 41 side separately, the 2nd coupling body 41 is the back of the T-shaped engagement recessed part 15 at the time of clamping. It is set in a state where it abuts on the surface, and then simply rises upward. For this reason, the second combined body 41 is not inclined.
Incidentally, when the second combined body 41 and the second sleeve 61 are integrated, the tightening portion is pressed inward at the time of tightening, so the lower end portion of the second combined body 41 is in a T-shaped engagement. There is concern that the second combined body 41 may be inclined as a result of moving away from the inner surface of the recess 15. When coupled and fixed in a state where such a tilt is generated, the coupled / fixed state may be loosened if the tilt is corrected by the action of some external force thereafter. In the case of this embodiment, there is no such concern.

  Further, since the first sleeve 21 acts on the first combined body 25 side while moving to the first combined body 25 side, the first combined body 25 does not tilt.

As described above, according to the present embodiment, the following effects can be obtained.
First, a desired coupling structure can be obtained with a small number of parts and a simple configuration. That is, the number of parts is only the first sleeve 21, the second sleeve 61, the first combined body 25, the second combined body 41, and the screw member 73. These are sequentially set and the screw member 73 is screwed together. A desired bond structure can be obtained only by this. Therefore, disassembly / assembly can be facilitated without requiring much labor and long time.
Moreover, a firm connection / fixed state can be obtained. That is, when the screw member 73 is screwed together, the taper portions 23 and 23 formed at both ends of the first sleeve 21, the taper portion 33 of the cylindrical engagement portion 29 of the first combined body 25, and the second By the action of the taper portion 67 of the sleeve 61, the first combined body 25 and the second combined body 41, and thus the first structural member 1 are pulled up to the second structural member 11 side. The two structural members 11 are firmly connected and fixed.
Further, since the second sleeve 61 is provided separately on the second combined body 41 side, the first combined body 25 and the second combined body 41 are set in an inclined state. Therefore, it is possible to prevent the first structural member 1 and the second structural member 11 from being bonded and fixed in a state where the first combined body 21 and the second combined body 41 are inclined.
Incidentally, when the first structural member 1 and the second structural member 11 are bonded and fixed in a state where the first combined body 25 and the second combined body 41 are inclined, the first combined body 25 and the second combined body 25 are combined. When the inclination of the body 41 is eliminated by the action of external force or the like, the coupling / fixing state between the first structural member 1 and the second structural member 11 is loosened. On the other hand, in the case of the present embodiment, as described above, it is possible to prevent the first combined body 25 and the second combined body 41 from being set in an inclined state. The occurrence of such a situation can be prevented.
Further, the head portion 75 of the screw member 73 enters the tape portion 49 of the second combined body 41, and each component is hidden in the fitting recess 15 of the second structural member 11 at the time of connection. It does not affect other structures and is excellent in aesthetics.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the case of the second embodiment, as in the case of the first embodiment, the second structural member 11 is coupled and fixed to the first structural member 1 and the third structural members 91 and 91 are fixed. Are coupled and fixed to the first structural member 1. And the overhang | projection part 93 is provided in the 1st coupling body 21 side. Similarly, a protruding portion 95 is provided on the second combined body 41 side. The overhang portion 93 is provided with an attachment hole 94, and the overhang portion 95 is also provided with an attachment hole 96. The overhang portions 93 and 95 are arranged at the corner portions of the respective structural members. And various members, for example, a plate for walls, etc., are attached using the attachment holes 94, 96 of the overhang portions 93, 95.

Fixing fittings 97 are installed at the distal ends of the overhang portion 93 of the first combined body 25 and the overhang portion 95 of the second combined body 41 so as to cover the respective distal end portions. As shown in FIG. 13, the fixing bracket 97 includes an engaging portion 99 and a through hole 101. Then, the engaging portion 99 is engaged with the protruding portion 93 of the first combined body 25 and the distal end portion of the protruding portion 95 of the second combined body 41 from above. The fixing bolts 103 and 103 and the nuts 105 and 105 are fixed through the through holes 101 and 101.

As described above, according to the second embodiment, the same effect as in the case of the first embodiment can be obtained, and the overhanging portion 93 is provided in the first combined body 21, so that the second combined body 41 can be provided. Since the overhanging portion 95 is provided, it is convenient when a wall or the like is attached to the frame assembled by each structural material.

The present invention is not limited to the first and second embodiments.
First, various shapes of the structural members are assumed and are not limited to those illustrated.
Similarly, the same applies to the shapes of each combined body and other parts.

The present invention relates to a coupling structure for a structural material in which the first structural material and the second structural material in which an engagement groove is formed are to be coupled, and the second structural material is brought into contact with and connected to and fixed to the first structural material. In particular, the present invention relates to a device devised so that a desired coupling structure can be obtained with a simple structure with a small number of parts, and is suitable, for example, when constructing a framework of various structures.

It is a figure which shows the 1st Embodiment of this invention, and is a disassembled perspective view which shows the procedure which couple | bonds a 1st structural material and a 2nd structural material sequentially. It is a figure which shows the 1st Embodiment of this invention, and is sectional drawing which shows the coupling | bonding structure which couple | bonds a 1st structural material and a 2nd structural material. FIGS. 3A and 3B are views showing a first embodiment of the present invention, FIG. 3A is a front view showing the configuration of the first structural material, FIG. 3B is a plan view showing the configuration of the first structural material, and FIG. FIG. 3C is a bottom view of the first structural material, FIG. 3D is a left side view of the first structural material, and FIG. 3E is a right side view of the first structural material. 4A and 4B are diagrams showing a first embodiment of the present invention, in which FIG. 4A is a cross-sectional view taken along the line aa in FIG. 3C, and FIG. 4B is a cross-sectional view taken along the line bb in FIG. is there. FIG. 5 is a diagram showing a first embodiment of the present invention, and is a diagram showing a structure of a joined body for joining the first structural material and the second structural material, and FIG. FIG. 5B is a bb arrow view of FIG. 5A, and FIG. 5C is a cc arrow view of FIG. 5A. FIG. 6 is a diagram showing a first embodiment of the present invention, and is a diagram showing a structure of a joined body for joining the first structural material and the second structural material, and FIG. FIG. 6B is a side view taken along the line bb in FIG. 6A. It is a figure which shows the 1st Embodiment of this invention, and is a side view which fractures | ruptures partially and shows the structure of the sleeve for couple | bonding a 1st structural material and a 2nd structural material. It is a figure which shows the 1st Embodiment of this invention, and is a side view which fractures | ruptures partially and shows the structure of the sleeve for couple | bonding a 1st structural material and a 2nd structural material. It is a figure which shows the 1st Embodiment of this invention, and is a figure which shows the structure of the obstruction | occlusion member for obstruct | occluding the opening part of a 2nd structural material, Fig.9 (a) is sectional drawing of an obstruction | occlusion member, FIG. FIG. 9B is a sectional view taken along line bb in FIG. 9A, and FIG. 9C is a view taken along the line cc in FIG. It is a figure which shows the 2nd Embodiment of this invention, and is sectional drawing which shows the coupling | bonding structure which couple | bonds a 1st structural material and a 2nd structural material. FIG. 11 is a view showing a second embodiment of the present invention, and is a view showing a structure of a joined body for joining the first structural material and the second structural material, and FIG. FIG. 11B is a side view taken along the line bb in FIG. 11A, and FIG. 11C is a side view taken along the line cc in FIG. 11A. FIG. 12 is a view showing a second embodiment of the present invention, and is a view showing a structure of a joined body for joining the first structural material and the second structural material. FIG. 12 (a) is a partially broken view of the joined body. FIG. 12B is a side view taken along the line bb in FIG. 12A. FIGS. 13A and 13B are views showing a second embodiment of the present invention, in which FIG. 13A is a plan view showing a configuration of a fixture for fixing a combined body, and FIG. 13B is a b- in FIG. b sectional drawing and FIG.13 (c) are cc arrow directional views of Fig.13 (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st structure material 3 Opening part 5 T-shaped engaging recessed part 7 Engaging recessed part 11 2nd structural material 13 Through-hole 15 T-shaped engaging recessed part 17 Through-hole for coupling | bonding (1st through-hole)
21 1st sleeve 23 taper part
25 1st coupling body 27 Rod body part 29 Cylindrical engagement part 31 Through-hole (2nd through-hole)
33 Tapered portion 35 T-shaped engaging portion 41 Second combined body 43 Rod body portion 45 Cylindrical engaging portion 47 Through hole (third through hole)
49 taper-shaped recess 51 T-shaped engagement portion 61 second sleeve 63 through hole 65 collar portion 67 taper portion 71 female thread portion 73 of first combined body screw member 75 head

Claims (3)

A first structural member provided with an engaging groove; and a second structural member provided with at least a pair of engaging grooves extended and formed in the longitudinal direction. An end surface of the second structural member is provided on the first structure. In the structure of the structural material that joins the first structural material and the second structural material in contact with the side of the material where the engagement groove is provided,
A first sleeve inserted and arranged in a first through hole provided between a pair of engaging grooves of the second structural material;
A first combined body having a second through-hole engaged and disposed in an engagement groove of the second structural material and an engagement groove of the first structural material on one end side of the first through-hole;
A second combined body having a third through hole engaged and disposed in the engagement groove of the second structural material and the engagement groove of the first structural material on the other end side of the first through hole;
A second sleeve inserted and arranged in the third through hole of the second combined body;
The second sleeve inserted and disposed in the third through hole of the second combined body, the first sleeve inserted and disposed in the first through hole of the second structural member, and the second through hole of the first combined body A screw member that joins the first structural material and the second structural material by screwing into a female screw portion that is inserted into and provided in the second through hole;
A structural material coupling structure characterized by comprising: In the structure material coupling structure according to claim 1,
A convex portion is formed on the first sleeve side of the second through hole of the first combined body, and the taper is gradually reduced in diameter toward the first sleeve side on the first sleeve side of the convex portion. Part is formed,
Similarly, a convex portion is formed on the first sleeve side of the second sleeve inserted and arranged in the third through hole of the second combined body, and the convex portion is formed on the first sleeve side of the convex portion. A taper portion that is gradually reduced in diameter toward the sleeve side is formed,
On the other hand, a pair of taper portions which are gradually reduced in diameter toward the inside so as to face the taper portion on the first combined body side and the taper portion of the second sleeve are formed at both ends of the first sleeve. ,
By screwing the screw member, the first structural member and the first sleeve are formed by the action of the tapered portions at both ends of the first sleeve, the tapered portion on the first combined body side, and the tapered portion of the second sleeve. 2. A structural material coupling structure characterized in that the structural material is fastened and fixed. In the bonded structure of the structural material according to claim 1 or 2,
A structure-joining structure characterized in that a recess is formed in the second joined body so as to conceal the head of the screw member.

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