JP2006063707A - Connecting structure for structural material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting structure for structural material having simple structure for connecting a first structural material and a second structural material to each other with a less number of parts. <P>SOLUTION: The connecting structure for structural material has the first structural material and the second structural material, wherein the first structural material and the second structural material are connected to each other in the state that the end face of the second structural material abuts on the side of a groove of the first structural material. It comprises a through-hole provided between a pair of grooves of the second structural material, a sleeve to be fitted to the through-hole, a first combination having a fitting portion at one end for fitting the groove of the first structural material and a through-hole, a second combination having a fitting portion at one end for fitting the groove of the first structural material and a through-hole with a female screw portion, and a screw member to be inserted into the through-hole of the first combination, the sleeve fitted to the through-hole of the second structural material and the through-hole of the second combination and to be threaded to the female screw portion of the through-hole of the second combination for connecting the first structural material and the second structural material to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

In the present invention, long first and second structural members having grooves formed along the longitudinal direction are formed on the outer surface, and the second structural member is brought into contact with the first structural member to be connected and fixed. In particular, the present invention relates to a structure devised so that a desired connection 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. For example, the coupling structure at that time is 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, since the bracket is attached to each of the first and second structural members using a set screw, the number of set screws increases, 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 and second structural members 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. That is, according to the structural material coupling structure disclosed in Patent Document 1, although the above-described problems can be solved, further improvements are required, and in particular, a reduction in the number of parts is required. Therefore, it is required to facilitate the joining work and improve the 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 having at least one groove extending and formed in the longitudinal direction, and a groove extending and formed in the longitudinal direction. A second structural member provided with at least a pair of the first structural member and an end surface of the second structural member abutting against a side of the first structural member where the groove is provided, In the structure structure coupling structure for joining two structural materials, a through hole provided between a pair of grooves of the second structural material, a sleeve fitted into the through hole, and one end of the first structural material at one end A first combined body that includes a fitting portion that fits into the groove and includes a through hole, and a through hole that includes a fitting portion that fits into the groove of the first structural material at one end and has a female screw portion. The second combined body, the through hole of the first combined body and the through hole of the second structural member are fitted. A screw member that is inserted into the through hole of the sleeve and the second combined body and is screwed into a female screw portion provided in the through hole of the second combined body, thereby connecting the first structural member and the second structural member. 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 sleeve side of the through hole of the first combined body. A taper portion that gradually decreases in diameter toward the sleeve side is formed on the sleeve side, and similarly, a convex portion is formed on the sleeve side of the through hole of the second combined body. On the sleeve side of the convex portion, a tapered portion that is gradually reduced in diameter toward the sleeve side is formed. On the other hand, at both ends of the sleeve, the tapered portion on the first combined body side and the tapered portion on the second combined body side are formed. A pair of taper portions that are gradually reduced in diameter so as to face the taper portion are formed, and the screw members are screwed together, whereby the taper portions at both ends of the sleeve and the first The tapered portion on the combined body side and the second combined body side By the action of an over path portion, and is characterized in that the the first structural member and the second structural member is gradually being fastened and fixed.
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 first coupling body has a fitting recess into which the head of the screw member is fitted. It is characterized by being formed.

As described above in detail, according to the structure material coupling structure of the present invention, at least a pair of first structural material provided with at least one groove extending and formed in the longitudinal direction and at least one pair of grooves extended and formed in the longitudinal direction. A first structural material and a second structural material, wherein an end surface of the second structural material is brought into contact with a side of the first structural material where the groove is provided. In the structure for connecting the structural members for connecting the first structural member, the through hole provided between the pair of grooves of the second structural member, the sleeve fitted into the through hole, and the groove of the first structural member at one end. A first coupling body having a fitting portion and a through-hole, and a second coupling having a fitting portion fitted to the groove of the first structural member at one end and a through-hole having a female screw portion And a sleeve fitted into the through hole of the first combined body and the through hole of the second structural member A screw member that is inserted into the through hole of the second combined body and is screwed into a female screw portion provided in the through hole of the second combined body, thereby connecting the first structural material and the second structural material; Therefore, first, 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 sleeve, the first combined body, the second combined body, and the screw member, and a desired combined structure can be obtained simply by setting these in order and screwing the screw member. is there. Therefore, disassembly / assembly can be facilitated without requiring much labor and long time. Further, each of the above components is hidden in the groove of the second structural member at the time of joining, so that it does not affect other structures and is excellent in aesthetics.
Also, a convex portion is formed on the sleeve side of the through hole of the first combined body, and a tapered portion that is gradually reduced in diameter toward the sleeve side is formed on the sleeve side of the convex portion. Similarly, a convex portion is formed on the sleeve side of the through hole of the second combined body, and a tapered portion that is gradually reduced in diameter toward the sleeve side is formed on the sleeve side of the convex portion. On the other hand, at both ends of the sleeve, a pair of taper portions that are gradually reduced in diameter toward the inside so as to face the taper portion on the first conjugate side and the taper portion on the second conjugate side are formed. Then, by screwing the screw member, the first structural member is obtained by the action of the taper portions at both ends of the sleeve, the taper portions on the first conjugate body side, and the taper portions on the second conjugate body side. And the second structural material will be fastened and fixed When configured can obtain a strong connection-fixed state. That is, when the screw members are screwed together, the taper portion formed in the opening portions at both ends of the sleeve, the taper portion of the convex portion of the first combined body, and the taper portion of the convex portion of the second combined body As a result, the first combined body and the second combined body, and thus the first structural material, are drawn toward the second structural material side, and thereby the first structural material and the second structural material are firmly connected and fixed. It will be.
Moreover, when the fitting concave part into which the head of the screw member is fitted is formed in the first combined body, there is an advantage that the protrusion of the head of the screw member is eliminated.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4 are perspective views showing a state in which the first structural member 1 and the second structural member 3 are connected in the order of steps. The first structural member 1 has a substantially square cross-sectional shape, and includes a central portion 5, four corner portions 7, and four pieces formed between the four corner portions 7. A dovetail 9 is provided.

A through hole 11 extending in the axial direction is formed in the center portion 5. Each corner portion 7 is also provided with a through hole 13 extending in the axial direction. The dovetail groove 9 has a cross-sectional shape in which the trapezoid is reversed.

On the other hand, the second structural member 3 has the same shape as the first structural member 1. That is, the second structural member 1 has a substantially square cross-sectional shape, and is formed between the center portion 15, the four corner portions 17, and the four corner portions 17. A single dovetail groove 19 is provided.

A through hole 21 extending in the axial direction is formed in the central portion 15. Each corner 17 is also provided with a through hole 23 extending in the axial direction. The dovetail groove 19 has a cross-sectional shape in which the trapezoid is reversed.

The end surface of the second structural member 3 having the above configuration is brought into contact with and fixed to one side surface of the first structural member 1.

First, as shown in FIGS. 4 and 5, a through hole 31 is drilled in the central portion 15 of the second structural member 3. Further, notches 32 and 32 are formed at the edges of the dovetail grooves 9 and 9 on both sides of the through hole 31. A sleeve 33 is inserted and fitted into the through hole 31. The sleeve 33 has a shape as shown in FIGS. A through hole 35 is formed in the sleeve 33, and both end openings 37 and 39 of the through hole 35 are formed in a tapered shape so as to increase in diameter toward the outside. The taper angle (α1 °) of the opening 37 is set to “90 °”. Similarly, the taper angle (α2 °) of the opening 39 is also set to “90 °”. Further, the opening 39 is formed with protruding portions 41, 41 at opposing positions of 180 °. The protrusions 41 and 41 are engaged with the edge of the through hole 31 so that the position of the sleeve 33 is regulated. It is also conceivable to insert the sleeve 33 downward from above. In such a case, the protrusions 41 and 41 are engaged with the edge of the through-hole 31 so that the sleeve 33 falls. Can be prevented and its position can be regulated.

Next, the first combined body 51 and the second combined body 53 are inserted and arranged on both sides of the sleeve 33 inserted and fitted into the through hole 31. The first combined body 51 has a shape as shown in FIGS. First, a fitting portion 55 is formed at the lower end. The fitting portion 55 is shaped to fit in a movable state with respect to the dovetail groove 9 of the first structural member 1. A rod body 56 is provided above the fitting portion 55, and a through hole 57 is drilled in the rod body 56. A convex portion 59 is formed outside the through hole 57. This convex part 59 is formed in a taper shape whose diameter is reduced toward the outside. A recess 61 is formed at the position of the through hole 57.

The second combined body 53 has a shape as shown in FIGS. First, a fitting portion 71 is formed at the lower end. The fitting portion 71 is shaped to fit in a movable state with respect to the dovetail groove 9 of the first structural member 1. Further, a bar body 72 is provided above the fitting part 71, and a through hole 73 is bored in the bar body 72, and a female screw part 75 is provided there. A convex portion 77 is formed outside the through hole 73. The convex portion 77 is formed in a taper shape whose diameter is reduced toward the outside.

Then, as shown in FIG. 2, the fitting portion 55 of the first combined body 51 is fitted into the dovetail groove 9 of the first structural member 1. At that time, the direction of the fitting portion 55 in the longitudinal direction is set along the longitudinal direction of the dovetail groove 9. Thereby, the fitting portion 55 enters the dovetail groove 9. Next, the first combined body 51 is rotated by “90 °”. Thereby, the longitudinal direction of the fitting part 55 and the longitudinal direction of the dovetail groove 9 intersect each other, and the first combined body 51 is prevented from coming off from the dovetail groove 9. Thereafter, in this state, the first combined body 51 is slid along the dovetail groove 9 and inserted and arranged in the dovetail groove 19 of the second structural member 3.

The same applies to the second combined body 53, and the fitting portion 71 of the second combined body 53 is fitted into the dovetail groove 9 of the first structural member 1 on the side opposite to the first combined body 51. At that time, the direction of the fitting portion 71 in the longitudinal direction is set along the longitudinal direction of the dovetail groove 9. Thereby, the fitting portion 71 enters the dovetail groove 9. Next, the second combined body 53 is rotated by “90 °”. Accordingly, the longitudinal direction of the fitting portion 71 and the longitudinal direction of the dovetail groove 9 intersect each other, and the second combined body 53 is prevented from coming off from the dovetail groove 9. Thereafter, the second combined body 53 is slid along the dovetail groove 9 in that state, and is inserted and arranged in the dovetail groove 19 of the second structural member 3.

Next, as shown in FIGS. 3 and 4, the screw member 81 is inserted and screwed in from the first combined body 51 side. The screw member 81 includes a head portion 83 and a shaft portion 85, and a male screw portion 87 is formed on the shaft portion 85. Then, the screw member 81 is inserted into the through hole 61 of the first combined body 51, the through hole 31 of the central portion 15 of the second structural member 3, and the through hole 73 of the second combined body 53, and the male threaded portion 87 is inserted. The female thread portion 75 is screwed. Thereby, the second structural member 3 is connected and fixed to the first structural member 1.

The operation when the screw member 81 is screwed will be described in detail. That is, as shown in FIG. 5, when the screw member 81 is screwed together, the tapered portion formed in the both end openings 37 and 39 of the sleeve 33 and the tapered portion of the convex portion 59 of the first combined body 51. Then, by the action of the tapered portion of the convex portion 77 of the second combined body 53, the first combined body 51 and the second combined body 53 and thus the first structural member 1 are pulled upward in FIG. Thereby, the first structural member 1 and the second structural member 3 are firmly connected and fixed.

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 sleeve 33, the first combined body 51, the second combined body 53, and the screw member 81, and a desired combined structure can be obtained simply by setting these in order and screwing the screw member 81 together. It is something that can be done. 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 81 is screwed together, the tapered portion formed in the both end openings 37 and 39 of the sleeve 33, the tapered portion of the convex portion 59 of the first combined body 51, and the second combined body 53. 5, the first combined body 51 and the second combined body 53, and thus the first structural member 1 are pulled upward in FIG. The structural material 3 is firmly connected and fixed.
Further, the head portion 83 of the screw member 81 enters the recess 61 of the first combined body 51, and each component is hidden in the dovetail groove 19 of the second structural member 3 when combined. It does not affect the structure, and is also aesthetically pleasing.
Further, since the protruding portions 41 and 41 are provided in the sleeve 33, the protruding portions 41 and 41 engage with the edge of the through hole 31, so that the sleeve 33 can be restricted to a normal position. . Further, when the sleeve 33 is inserted from the upper side to the lower side, the position of the sleeve 33 can be regulated and the fall can be prevented at the same time.

Next, a second embodiment of the present invention will be described with reference to FIG. This shows an example in which two second structural members 3 and 3 are brought into contact with each other from the two orthogonal directions at the end of the first structural member 1 to be connected and fixed. Since the configuration of each part is the same as that of the first embodiment, the same parts are denoted by the same reference numerals and description thereof is omitted.

Therefore, also in the case of the second embodiment, the same effect as in the case of the first embodiment can be obtained.

The present invention is not limited to the first and second embodiments.
First, the state in which the first structural material and the second structural material are brought into contact with each other is arbitrary, and is not particularly limited.
In the first and second embodiments, the first structural material and the second structural material have been described by taking the shape having four dovetail grooves as an example. However, the present invention is not limited to this. .
In addition, what is illustrated is merely an example.

In the present invention, long first and second structural members having grooves formed along the longitudinal direction are formed on the outer surface, and the second structural member is brought into contact with the first structural member to be connected and fixed. In particular, the present invention relates to a structure that is devised so that a desired connection structure can be obtained with a simple structure, 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 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 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 procedure which couple | bonds a 1st structural material and a 2nd structural material. It is a figure which shows the 1st Embodiment of this invention, and is sectional drawing which expands and shows the V section of FIG. It is a figure which shows the 1st Embodiment of this invention and is sectional drawing of a sleeve. It is a figure which shows the 1st Embodiment of this invention and is a VII-VII arrow line view of FIG. It is a figure which shows the 1st Embodiment of this invention, and is a fragmentary sectional view which expands and shows the VIII part of FIG. It is a figure which shows the 1st Embodiment of this invention and is a front view of a 1st conjugate | bonded_body. It is a figure which shows the 1st Embodiment of this invention, and is XX arrow line view of FIG. It is a figure which shows the 1st Embodiment of this invention and is a XI-XI arrow line view of FIG. It is a figure which shows the 1st Embodiment of this invention, and is XII-XII sectional drawing of FIG. It is a figure which shows the 1st Embodiment of this invention, and is XIII-XIII sectional drawing of FIG. It is a figure which shows the 1st Embodiment of this invention and is a front view of a 2nd conjugate | bonded_body. It is a figure which shows the 2nd Embodiment of this invention, and is XV-XV arrow line view of FIG. It is a figure which shows the 2nd Embodiment of this invention, and is a XVI-XVI arrow line view of FIG. It is a figure which shows the 2nd Embodiment of this invention, and is XVII-XVII sectional drawing of FIG. It is a figure which shows the 2nd Embodiment of this invention, and is XVIII-XVIII sectional drawing of FIG. It is a figure which shows the 2nd Embodiment of this invention, and is a disassembled perspective view which shows the structure of the coupling | bond part of a 1st structure and a 2nd structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st structural material 3 2nd structural material 5 Center part 7 Corner | angular part 9 Dovetail groove 11 Through hole 13 Through hole 15 Center part 17 Corner | angular part 19 Dovetail groove 21 Through hole 23 Through hole 31 Through hole 33 Sleeve 51 1st coupling body 53 2nd coupling body 55 Fitting part 57 Through-hole 59 Convex part 71 Fitting part 73 Through-hole 75 Female thread part 77 Convex part
81 Screw member 83 Head 85 Shaft 87 Male thread

Claims (3)

A first structural material having at least one groove extending and formed in the longitudinal direction; and a second structural material having at least one pair of grooves extending and formed in the longitudinal direction, the second structural material In the structure of connecting the first structural material and the second structural material by bringing the end surface of the first structural material into contact with the groove-provided side of the first structural material,
A through hole provided between the pair of grooves of the second structural material;
A sleeve fitted into the through hole;
A first combined body that includes a fitting portion that fits into the groove of the first structural material at one end and includes a through hole;
A second combined body provided with a through hole having a female threaded portion and a fitting portion that fits into the groove of the first structural material at one end;
A through hole of the first combined body, a sleeve fitted in the through hole of the second structural member, and a female screw inserted into the through hole of the second combined body and provided in the through hole of the second combined body A screw member that joins the first structural material and the second structural material by screwing into a portion;
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 sleeve side of the through hole of the first combined body, and a tapered portion that is gradually reduced in diameter toward the sleeve side is formed on the sleeve side of the convex portion,
Similarly, a convex portion is formed on the sleeve side of the through hole of the second combined body, and a tapered portion that is gradually reduced in diameter toward the sleeve side is formed on the sleeve side of the convex portion. And
On the other hand, a pair of taper portions that are gradually reduced in diameter toward the inside so as to face the taper portion on the first conjugate body side and the taper portion on the second conjugate body side are formed at both ends of the sleeve,
When the screw member is screwed together, the first structural member and the second taper are formed by the action of the tapered portions at both ends of the sleeve, the tapered portion on the first combined body side, and the tapered portion on the second combined body side. 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 coupling structure for a structural material, wherein the first coupling body is formed with a fitting recess into which the head of the screw member is fitted.

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