JP2011106608A - Structural member joint structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structural member joint structure capable of easily joining members to each other by using a simple structure having a reduced number of parts and providing the members with a large fastening force which prevents the members from being easily loosened from each other by an external force. <P>SOLUTION: The structural member joint structure includes a pair of outer members which is stored in a second structural member with a through-hole formed therein and is provided with an engagement part engaged with an engagement part in a groove of a first structural member and the through-hole, an inner member which is disposed between the pair of outer members and is biased to the second structural member side to move the pair of outer members in the direction separating the pair of outer members therefrom and causing each engagement part to engage with the engagement part of the first structural member, a fitting which is disposed in the second structural member with the through-hole in which the inner member is inserted and is provided with a female screw, a holder stored in the second structural member to retain an elastic member between the pair of inner members, and a screw member which is screwed into the female screw of the fitting to urge the inner member to the second structural member side against an urging force of the elastic member and move it in the direction in which the outer members are separated from each other so that each engagement part can engage with the groove of the first structural member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to, for example, a structure for joining structural members for abutting an end face of the other pillar member to a side surface of one pillar member from a direction orthogonal to each other and joining both pillar members in that state. The present invention relates to a device that can be easily coupled with a simple structure having a small number of points and that is hard to loosen with respect to an external force and can obtain a strong fastening force.

  For example, when the end surfaces of the other column member are abutted against the side surface of one column member from a direction orthogonal to each other and both column members are combined in this state, the following connection structure is used. First, the end face of the other pillar member is abutted against the side surface of one pillar member, and a substantially triangular bracket is attached and fixed to the corner of the abutting portion with, for example, hexagon socket bolts and nuts. By fixing both pillar materials.

  Another coupling structure is as follows. First, a combined body in which an end portion extending outward of the dovetail groove is formed in the dovetail groove of one pillar material is fitted. Next, the end surface of the other column member is abutted against the side surface of the one column member. And the edge part of the coupling body already demonstrated is fixed to the predetermined position in the dovetail groove | channel of the other pillar material with a set screw.

  Although different from the above two types of conventional examples, there are, for example, Patent Document 1, Patent Document 2, Patent Document 3 and the like as disclosures of this type of structural material coupling structure. All are attributed to the present patent applicant.

Japanese Patent Laid-Open No. 2002-62302 JP 2007-154924 A JP 2009-114645 A

The conventional configuration has the following problems.
First, in the case of the conventional example described first, the bracket must be attached to each of the one column member and the other column member with set screws, which requires a large number of set screws. was there. In addition, there is a problem in that a large number of set screws are required to be screwed in by using a fastening tool, which requires a lot of labor and a long working time.
In the case of the first conventional example, the work of screwing the bracket is performed with the end face of the other pillar member abutting against the side face of one pillar member. There was a problem that workability was poor.
Also, in the case of the second conventional example, it becomes an operation of screwing the combined body with the end face of the other pillar member abutting against the side face of one pillar member. There was a problem that workability was poor because it was lacking in performance.

  The present invention has been made on the basis of these points, and the object of the present invention is that it can be easily attached with a simple structure with a small number of parts, and it is difficult to loosen against external force and has a strong fastening force. The object is to provide a bonding structure that can be obtained.

In order to solve the above-mentioned problem, the structure of the first aspect of the present invention has a second connecting structure on the side surface of the first structural member having at least one groove extending and formed in the longitudinal direction. In the structure structure of the structural material for joining the first structural material and the second structural material in a state where the end surfaces of the structural material are in contact with each other, a through hole is formed in the second structural material. And a through hole corresponding to the through hole of the second structural material, and having an engaging portion that is accommodated and disposed inside the two structural material and engages with engaging portions formed on both sides of the groove of the first structural material. The pair of outer members provided, and the pair of outer members disposed between the pair of outer members and urged toward the second structural member side to move the pair of outer members away from each other, thereby engaging each other. An inner member that engages the engaging portion with the engaging portion of the first structural member, and the first member A metal fitting having a through hole through which the inner member is inserted while being disposed in the second structural material through the through hole of the structural material and the through hole of the pair of outer members, and the first 2 A holder that is accommodated and arranged in the structural material and holds the elastic member between the pair of outer members, and the inner member is resisted against the urging force of the elastic member by being screwed into the female screw portion of the metal fitting. Then, the first structure is formed by urging the pair of outer members toward the second structure member and moving the pair of outer members away from each other to engage the respective engaging portions with the grooves of the first structure member. And a screw member that joins the material and the second structural material.
According to a second aspect of the present invention, there is provided a coupling structure for a structural member according to the first aspect, wherein the holder is provided with a pair of positioning engagement pieces, and the positioning engagement pieces are the pair of positioning engagement pieces. It engages with an engaging recess provided on the outer peripheral side of the outer member, engages with an edge of the through hole of the second structural material, and engages with an engaging recess provided on the metal fitting. It is a feature.
According to a third aspect of the present invention, there is provided a coupling structure for a structural member according to the second aspect, wherein the elastic member is configured to hold a part of the elastic member at the holder-side ends of the pair of outer members. A holding portion is formed.

As described above, according to the coupling structure in the structure according to the first aspect of the present invention, the second side of the first structural member having at least one groove extending and formed in the longitudinal direction is formed on the side surface on which the groove is formed. In the structure structure of the structural material for joining the first structural material and the second structural material in a state where the end surfaces of the structural material are in contact with each other, a through hole is formed in the second structural material. And a through hole corresponding to the through hole of the second structural material, and having an engaging portion that is accommodated and disposed inside the two structural material and engages with engaging portions formed on both sides of the groove of the first structural material. The pair of outer members provided, and the pair of outer members disposed between the pair of outer members and urged toward the second structural member side to move the pair of outer members away from each other, thereby engaging each other. An inner member that engages the engaging portion with the engaging portion of the first structural member, and the first member A metal fitting having a through hole through which the inner member is inserted while being disposed in the second structural material through the through hole of the structural material and the through hole of the pair of outer members, and the first 2 A holder that is accommodated and arranged in the structural material and holds the elastic member between the pair of outer members, and the inner member is resisted against the urging force of the elastic member by being screwed into the female screw portion of the metal fitting. Then, the first structure is formed by urging the pair of outer members toward the second structure member and moving the pair of outer members away from each other to engage the respective engaging portions with the grooves of the first structure member. Since the screw member for joining the material and the second structural material is provided, first, it is possible to easily obtain a strong fixed state with a relatively small number of parts and by a simple operation. it can.
According to a second aspect of the present invention, there is provided a coupling structure for a structural member according to the first aspect, wherein the holder is provided with a pair of positioning engagement pieces, and the positioning engagement pieces are the pair of positioning engagement pieces. It is configured to engage with an engagement recess provided on the outer peripheral side of the outer member, engage with an edge of the through hole of the second structural material, and engage with an engagement recess provided on the metal fitting. Therefore, the positioning operation at the time of the fixing operation of the second structural material with respect to the first structural material is good, and thereby the workability is greatly improved.
According to a third aspect of the present invention, there is provided the structural member coupling structure according to the second aspect, wherein the pair of outer members are elastic members that hold a part of the elastic member at the ends of the pair of outer members on the holder side. Since the holding portion is formed, the elastic member can be held and operated in a stable state.

It is a figure which shows one embodiment of this invention, and is an exploded perspective view which shows the coupling | bonding structure of a structural material. It is a figure which shows one embodiment of this invention, and is a perspective view which shows the coupling | bonding structure of a structural material. It is a figure which shows one embodiment of this invention, and is a front view which shows the coupling | bonding structure of a structural material. It is a figure which shows one embodiment of this invention, and is IV-IV sectional drawing of FIG. It is a figure which shows one embodiment of this invention, Comprising: It is a figure which shows the structure of the outer member which is a component of the connection structure of a structural material, FIG.5 (a) is a front view of an outer member, FIG.5 (b) ) Is a cross-sectional view taken along line bb in FIG. 5A, FIG. 5C is a side view of the outer member, FIG. 5D is a plan view of the outer member, and FIG. 5E is a rear view of the outer member. FIG. 5F is a bottom view of the outer member. It is a figure which shows one embodiment of this invention, Comprising: It is a figure which shows the structure of the inner member which is a component of the coupling | bonding structure of a structural material, Fig.6 (a) is a front view of an inner member, FIG.6 (b) ) Is a side view of the inner member, and FIG. 6C is a bottom view of the inner member. It is a figure which shows one embodiment of this invention, Comprising: It is a figure which shows the structure of the round metal fitting which is a component of the connection structure of a structural material, FIG. 7 (a) is a top view of a round metal fitting, FIG. ) Is a side view of a round metal fitting. It is a figure which shows one embodiment of this invention, Comprising: It is a figure which shows the structure of the holder which is a component of the connection structure of a structural material, Fig.8 (a) is a front view of a holder, FIG.8 (b) is FIG. The bottom view of a holder, FIG.8 (c) is a top view of a holder, FIG.8 (d) is dd sectional drawing of Fig.8 (a).

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. First, there is a first structural material 1 and a second structural material 3. The first structural member 1 has a substantially rectangular shape with a hollow cross section, and has a through hole 1a at the center and four side surfaces 5. A groove 7 is formed in each of the four side surfaces 5. Engaging recesses 9 are formed at both ends of the groove 7 in the width direction. Further, through holes 11 are formed at slightly inner positions of the four corners in the cross section.
In addition, the said 1st structural material 1 makes the structure continuous in the left-right direction in FIG. 3, for example, and is cut | disconnected and used for arbitrary length.

Although it is the said 2nd structural material 3, it has the same structure as the said 1st structural material 1 fundamentally. The same parts are denoted by the same reference numerals in the drawings, and the description thereof is omitted.
A through hole 13 is formed at a predetermined position of the groove 7 on one side surface 5 of the second structural member 3. The through hole 13 is formed in a state of penetrating to the groove 7 on the opposite side surface 5.
In the case of the present embodiment, the second structural member 3 having the above configuration is coupled to the first structural member 1.
In addition, the said 2nd structural material 1 also makes the structure which continued in the up-down direction in FIG. 3, for example, and is cut | disconnected and used for arbitrary lengths.

As a component used when the second structural member 3 is coupled to the first structural member 1, there are first a pair of outer members 21 and 21. As shown in FIG. 5, the outer member 21 includes an outer member main body 23, and an engaging convex portion 25 is formed at the lower end of the outer member main body 23 in FIG. 1. The engaging convex portion 25 is selectively engaged with the engaging concave portion 9 of the groove 7 of the first structural material 1. Further, an inclined surface 27 is formed on the opposite side of the outer convex portion 25 of the outer member main body 23. A through hole 29 is formed at the center of the outer member main body 23. An engaging recess 31 is formed at an upper position in FIG. 1 of the through hole 29 of the outer member main body 23. Further, a coil spring holding portion 24 for holding a lower end of a coil spring as an elastic member, which will be described later, is provided at the upper end of the outer member 21 in FIG.
Since the pair of outer members 21 and 21 have the same configuration, the same reference numerals are given to the same parts in the figure.

An inner member 41 is installed between the pair of outer members 21 and 21. As shown in FIG. 6, the inner member 41 includes a shaft portion 43 and a base 45. A concave inclined surface 47 is formed on the shaft portion 43. The base 45 is formed with inclined surfaces 49 and 49 at positions facing each other. The pair of inclined surfaces 49, 49 are opposed to the already described inclined surfaces 27, 27 of the outer members 21, 21. Then, when the inner member 41 is biased upward in FIG. 1, the pair of outer members 21 and 21 are separated from each other by the interaction between the inclined surface 49 and the inclined surface 27 (the left and right outer sides in FIG. 1). Direction), and the structural material 1 is moved in a direction to be attracted to the structural material 3 side. The engagement protrusions 25, 25 are firmly engaged with the engagement recesses 9, 9 of the groove 7 of the first structural member 1 by the movement of the pair of outer members 21, 21 in the direction away from each other. become.

On the other hand, there is a round metal fitting 51. As shown in FIG. 7, the round metal fitting 51 is provided through the through hole 13 of the second structural member 3 and the through holes 29 and 29 of the pair of outer members 21 and 21. 2 Inserted and arranged in the structural material 3. And as shown also in FIG. 7, the round metal fitting 51 has comprised the substantially cylindrical shape, and the through-hole 53 is formed in the direction orthogonal to an axial direction in the center part. The shaft portion 43 of the inner member 41 already described is inserted and arranged in the through hole 53. An internal thread portion 55 is formed in the hollow portion on one end side of the round metal fitting 51. Further, an engaging recess 57 is extended and formed in the upper part of the round metal fitting 51 in FIG. 1 along the axial direction.

A holder 61 is accommodated and arranged in the second structural member 2. As shown in FIG. 8, the holder 61 includes a holder main body 63, and a pair of positioning engagement pieces 65, 65 project and are formed on the holder main body 63. A bent portion 65 a is provided at the tip of the pair of positioning engagement pieces 65, 65. The positioning engaging pieces 65, 65 engage with the engaging recesses 31, 31 of the pair of outer members 21, 21 and also engage with the engaging recess 57 of the round metal fitting 51. Further, the bent portions 65a and 65a of the pair of positioning engagement pieces 65 and 65 are engaged with the upper edge of the through hole 13 of the second structural member 3 in FIG.

The screw member 71 is screwed into the female screw portion 55 of the round metal fitting 51 already described. An inclined surface 73 is provided at the tip of the screw member 71. This inclined surface 73 acts on the concave inclined surface 47 of the inner member 41 already described, and thereby urges the inner member 41 upward in FIG.

Between the holder 61 and the outer members 21, 21, a coil spring 81 as an elastic member is housed. The coil spring 81 constantly urges the pair of outer members 21 and 21 described above downward in FIG. A holding portion 63 a for holding the upper end of the coil spring 81 is provided on the inner side surface of the holder main body 63 of the holder 61. The outer members 21 and 21 are provided with coil spring holding portions 24 and 24 for holding the lower end of the coil spring 81 as described above.

The operation will be described based on the above configuration.
First, a holder 61, a pair of outer members 21 and 21, and a coil spring 81 are housed in the second structural member 3. Next, the round metal fitting 51 is passed through the through hole 13 of the second structural member 3 and the through hole 29 of the pair of outer members 21 and 21. Next, the inner member 41 is inserted into the through hole 53 of the round metal fitting 51. Next, the screw member 71 is slightly screwed into the female screw portion 55 of the round metal fitting 51. As a result, the tip of the inclined surface 73 at the tip of the screw member 71 comes into contact with the concave inclined surface 47 of the inner member 41, whereby the falling of the inner member 41 is regulated. That is, all the components constituting the structural material coupling structure are accommodated and arranged in the second structural material 3.
In this state, the entire constituent members including the pair of outer members 21 and 21 are biased downward in FIG. 1 by the biasing force of the coil spring 81. , 21, and a part of the lower end of the inner member 41 are slightly protruded and arranged outward from the lower end opening in FIG. 1 of the second structural member 3.

Next, the engagement convex portions 25 and 25 of the pair of outer members 21 and 21 that are projected and arranged outward from the lower end opening in FIG. 1 of the second structural member 3 are formed on the grooves 7 of the first structural member 1. The end surface of the second structural member 3 is applied perpendicularly to the side surface 5 of the first structural member 1 in a state of being fitted to the engaging recesses 9 on both sides.

Next, the screw member 71 is further screwed into the female screw portion 55 (indicated by an arrow A in FIG. 4). Accordingly, the inner member 41 is pushed upward in FIG. 1 against the urging force of the coil spring 81 by the action of the inclined surface 73 of the screw member 71 and the concave inclined surface 47 of the inner member 41 (FIG. 4). Middle arrow B). As the inner member 41 moves upward in FIG. 1, the pair of outer members 21, 49 interact with the pair of inclined surfaces 49, 49 of the inner member 41 and the inclined surfaces 27, 27 of the pair of outer members 21, 21. 21 are urged in directions away from each other (indicated by an arrow C in FIG. 4) and pulled up in the direction indicated by the arrow B. As a result, the engaging convex portions 25, 25 of the pair of outer members 21, 21 are firmly pressed and engaged with the engaging concave portions 9, 9 on both sides of the groove 7 of the first structural member 1. Become.

By such an action, the first structural member 1 is strongly drawn toward the second structural member 3 side, and the engagement convex portions 25 and 25 of the pair of outer members 21 and 21 are formed on the first structural member 1. The engagement recesses 9 and 9 on both sides of the groove 7 are firmly pressed and fitted, whereby the second structural member 3 is firmly attached and fixed to the first structural member 1. Become.

As described above, according to the present embodiment, the following effects can be obtained.
First, the second structural member 3 can be attached and fixed to the first structural member 1 with a relatively small number of parts and by a simple operation, and a strong fixed state can be easily obtained. In particular, if the holder 61, the pair of outer members 21, 21, the inner member 41, the coil spring 81, the round bracket 51, and the screw member 71 are preliminarily installed on the first structural member 1 side, then the pair of outer members The second structural member 3 is pushed against the first structural member 1 in a state where the engaging convex portions 25, 25 of the first and second structural members 21 are engaged with the pair of engaging concave portions 9, 9 of the groove 7 of the first structural member 1. The desired firmly fixed state can be obtained simply by screwing the screw member 71, so that the operation is greatly simplified.
Also, the holder 61 is provided with a pair of positioning engagement pieces 65, 65. The pair of positioning engagement pieces 65, 65 are placed in the engagement recesses 31, 31 of the pair of outer members 21, 21. Since it is made to engage and it is made to engage with the engagement recessed part 57 of the round metal fitting 51, positioning of a pair of outer members 21 and 21 and the round metal fitting 51 can be performed easily. Further, the bent portions 65a and 65a of the pair of positioning engagement pieces 65 and 65 are configured to engage with the edge of the through hole 13 of the second structural member 3, whereby the second structure Positioning with respect to the material 3 can also be performed. Due to these positioning actions, the workability of the fixing work of the second structural member 3 with respect to the first structural member 1 is greatly improved.
Further, as described above, in the process of performing the coupling work, all the components constituting the structural material coupling structure are accommodated and arranged in the second structural material 3, and the pair of outer members 21, 21 Only the engaging convex portions 25 and 25 and a part of the inner member 41 are projected and arranged. At that time, if the projections 25, 25 of the pair of outer members 21, 21 and a part of the inner member 41 are pressed against the urging force of the coil spring 81, the second structure It gets into the material 3. Therefore, for example, even when another structural material (a dimension between the two structural materials is determined) between two already-arranged columnar structural materials oriented in the horizontal direction is incorporated. If all the components constituting the structural material coupling structure are housed on the material side, the engagement protrusions 25 and 25 of the pair of outer members 21 and 21 and a part of the inner member 41 are projected and arranged. If the coil spring 81 is pressed against the urging force of the coil spring 81, the coil spring 81 enters the structural material, so that it can be easily inserted and fixed.
Further, since the coil spring 81 is held by the coil spring holding part 63a of the holder 61 and the coil spring holding parts 24, 24 of the pair of outer members 21, 21, a stable operation can be provided.

The present invention is not limited to the one embodiment.
For example, although the coil spring is used as the elastic member in the one embodiment, it is also assumed that a leaf spring, elastic rubber, or the like is used.
In the case of the above-described embodiment, a round metal fitting is used as the metal fitting. However, the metal fitting is not limited to this, and may be a polygonal metal fitting such as a square.
In addition, the illustrated configuration is merely an example.

The present invention relates to, for example, a structure for joining structural members for abutting an end face of the other pillar member to a side surface of one pillar member from a direction orthogonal to each other and joining both pillar members in that state. For example, a hollow shape whose cross-sectional shape is a substantially square shape, which can be combined with a simple structure with a small number of points and is designed to be able to obtain a strong fastening force that does not loosen against external force. It is suitable when bonding the structural materials of.

DESCRIPTION OF SYMBOLS 1 1st structure material 3 2nd structure material 5 Side surface 7 Groove 9 Engagement recessed part 13 Through-hole 21 Outer member 24 Coil spring holding part (elastic member holding part)
25 Engaging convex part 27 Inclined surface 29 Through hole 31 Engaging concave part 41 Inner member 43 Shaft part 45 Base 47 Concave inclined surface 49 Inclined surface 51 Round fitting (metal fitting)
53 Through-hole 57 Engaging recess 61 Holder 65 Positioning engagement piece 71 Screw member 81 Coil spring (elastic member)

Claims (3)

The first structural member and the second structural member in a state where the end surface of the second structural member is in contact with the side surface of the first structural member provided with at least one groove extending and formed in the longitudinal direction. In the connection structure of the structural material that connects the structural material,
A through hole is formed in the second structural material,
A through hole corresponding to the through hole of the second structural member is provided with an engaging portion that is accommodated and disposed inside the second structural member and engages with engaging portions formed on both sides of the groove of the first structural member. A pair of outer members with holes;
The pair of outer members are disposed between the pair of outer members and biased toward the second structural member to move the pair of outer members in a direction away from each other, thereby engaging the respective engaging portions with the first structural member. An inner member engaged with the joint,
A metal fitting provided with a female screw portion having a through hole through which the inner member is inserted while being disposed in the second structural material through the through hole of the second structural material and the through holes of the pair of outer members; ,
A holder that is accommodated and arranged in the second structural member and holds an elastic member between the pair of outer members;
The inner member is urged toward the second structure member against the urging force of the elastic member by being screwed into the female thread portion of the metal fitting, and the pair of outer members are moved away from each other. A screw member that joins the first structural material and the second structural material by engaging the respective engaging portions with the grooves of the first structural material;
A structural material coupling structure characterized by comprising: In the structure material coupling structure according to claim 1,
The holder is provided with a pair of positioning engagement pieces, and the positioning engagement pieces engage with engagement recesses provided on the outer peripheral sides of the pair of outer members, and the through holes of the second structural member The structural material coupling structure is characterized in that it engages with an edge of the metal plate and engages with an engagement recess provided in the metal fitting. In the structure material coupling structure according to claim 2,
A structure-member coupling structure, wherein an elastic member holding portion for holding a part of the elastic member is formed at an end portion of the pair of outer members on the holder side.

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