JP2996001B2 - Connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure such as a frame formed by connecting shape members.

[0002]

2. Description of the Related Art Hitherto, a structure as disclosed in Japanese Patent Application Laid-Open No. 3-199705 has been provided as a means for connecting frame members to form a framework. That is, a dovetail groove that opens outward is formed in the mold material over the entire length thereof, a plate-like nut body that can be inserted into the dovetail groove is provided, and a square abutment member that can be applied to the outer surface of the mold material is provided. An insertion hole for a screw body that can be screwed into the screw hole of the nut body is formed in the square contact member.

[0003] According to this conventional configuration, first, screw members that are passed through the insertion holes from the outside are screwed to the nut members, so that these nut members can be temporarily fixed to the square contact member. Next, the nut body is inserted into the dovetail groove of the corresponding mold member in a sliding manner. Then, by tightening the screw body in a state where the square contact member is made to correspond to the predetermined level position with respect to the mold material by the insertion motion, the nut material and the square contact member are sandwiched between the nut member and the square contact member. It is fixed to the shape material.

[0004]

According to the above-mentioned conventional type, when the nut body is temporarily fixed to the square contact member, the nut body is free in the approaching / separating direction or the screw rotating direction with respect to the square contact member. For this reason, it is not easy to insert the nut into the dovetail groove of the mold. Also, the end of the dovetail groove should be always open, but when assembling on-site a mold with the end of the dovetail groove closed, the nut body must be inserted into the dovetail groove in advance. Since the nut body slides (moves) in the dovetail groove due to its own weight or the like, it is not easy to tighten and fix the nut body with the screw body against the square contact member.

An object of the present invention is to provide a connecting structure which can be easily tightened and fixed by bolts even if a nut is inserted in a dovetail groove in advance.

[0006]

In order to achieve the above object, a connecting structure according to the present invention includes a first member which is opened outwardly.
The dovetail groove to be released is formed along the entire length of the
The dovetail is formed by providing a slit between a pair of formed pieces, and a nut body is provided in the dovetail so that the nut can be inserted into the dovetail. A nut body is formed by a plate-shaped main body formed with a plate-shaped elastic body and a plate-shaped elastic body integrated on the back surface of the main body.
The first groove is configured to be freely inserted into the dovetail against the elasticity of the body .
A second member having a bolt hole which can be abutted from the outside and can be fitted to the screw hole is provided on one side of the member, and a bolt which can be inserted from the outside and is screwable to the screw hole is provided in the bolt hole. ing.

[0007]

According to the configuration of the present invention, when assembling (connecting) the first member and the second member, first, the nut body is inserted into the dovetail portion of the first member through the open portion at the end thereof. Let it. If the opening at the end is closed before coming to the assembly site, a predetermined number of nut bodies should be inserted into the dovetail. Here, the insertion of the nut body is performed against the elasticity of the plate-like elastic body. Therefore, the insertion position of the nut body is determined by the first member because the plate-like elastic body is in close contact with the inner surface of the dovetail groove. Is maintained without shifting in any orientation.

[0008] With the nut body thus set,
With the second member facing the nut body and the bolt hole aligned with the screw hole, a bolt that is passed through the bolt hole from outside is screwed into the screw hole to perform temporary fixing. After performing the temporary fixing, the second member is moved to a predetermined level position of the first member. At this time, the nut body moves while sliding the plate-like elastic body against the inner surface, and the moving position is maintained by the elastic force of the plate-like elastic body. After that, by tightening the bolts, the dovetail groove forming piece is sandwiched between the nut body and the second member, so that the first member and the second member can be fixed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The pair of mold members (an example of a first member) 1 and 2 to be connected at right angles have the same shape, and are manufactured by, for example, aluminum drawing. That is, the mold members 1 and 2 have a square rod shape, and are provided with dovetail grooves 10 which are open outward on the respective surface sides along the entire length in the length direction. The slit portion 11 opened to the outside of the dovetail portion 10 is a pair of formed pieces.
Exists between the twelve. Further, the inner rear part of the dovetail part 10 is formed in a trapezoidal shape by a pair of inclined surfaces 10a. Necessary locations at both ends in the length direction of the two mold members 1 and 2 are formed with a tapered receiving surface 13 which spreads outward between the two forming pieces 12 by spot facing or the like.

Nut bodies 14 and 15 which can be inserted into the dovetail section 10
Are plate-shaped main bodies 14A and 15A having screw holes 16 and 17 in the thickness direction formed in the center thereof, and a plate-shaped rubber body (plate-like elastic body) integrated with the back surface of the main bodies 14A and 15A by bonding or the like. Example of 14)
B, 15B. Here the main body 14A, 15
A is formed of metal, resin, or the like. And the plate-like rubber body 14
B and 15B are formed of soft rubber or the like, and the outer surfaces thereof are formed in trapezoidal surfaces 14b and 15b similar to the tapered receiving surface 13 and the like.

An angular contact member (an example of a second member) 20 which can be freely arranged at a corner formed by the two mold members 1 and 2 has a triangular plate shape and can freely contact the outer surfaces 1a and 2a of the two mold members 1 and 2. The pair of contact surfaces 21 and 22 are formed so as to be displaced by 90 degrees. An L-shaped flange portion 23 is protruded from a position between the two contact surfaces 21 and 22 at the corner of the corner contact member 20 in a side view. Here, the width W ₁ of the flange portion 23 is the same as or slightly smaller than the width W ₂ of the slit portion 11, so that the flange portion 23 can protrude densely into the slit portion 11.

Bolt holes 24 and 25 are formed at two positions of the square contact member 20 which are displaced by 90 degrees and open at the contact surfaces 21 and 22 while avoiding the flange portion 23. The screw-like bolts 26 and 27 passed through the bolt holes 24 and 25 from outside are connected to the dovetail grooves.
It can be screwed into the screw holes 16 and 17 of the nuts 14 and 15 inserted into the nut 10. In the corner contact member 20, at least one of the contact surfaces 22 and around the bolt hole 25, a projection 29 having a tapered outer surface 28 having a tapered outer shape is integrally formed. Can come into contact with the tapered receiving surface 13. Further, the square contact member 20 has a through hole 30 in the thickness direction.
Are formed.

Next, the operation of assembling (connecting) the mold members 1 and 2 in the above embodiment will be described. First, the target dovetail part 10
Then, the nut bodies 14 and 15 are inserted through the open portions at the ends. In the case where the opening at the end is closed before coming to the assembly site, a predetermined number of nut bodies 14 and 15 are inserted into the dovetail groove 10 which is intended in advance. Here, the insertion of the nut members 14 and 15 is performed against the elasticity of the plate-like rubber members 14B and 15B. Therefore, the insertion position of the nut members 14 and 15 is set at the inclined surface 10a of the dovetail groove 10 or the like. Body 14B, 15
Since B is pressed in close contact, the mold members 1 and 2 can be maintained in any orientation regardless of the orientation.

With the nut members 14 and 15 set in this way, the square contact member 20 is attached to the nut member 14 of one of the mold members 1.
With the contact surfaces 21 facing each other and the bolt holes 24 aligned with the screw holes 16, the bolts passed through the bolt holes 24 from the outside
26 is screwed into the screw hole 16 for temporary fixing. Before and after the temporary fixing, the flange portion 23 is inserted into the slit portion 11. After performing such a temporary fixing, the square contact member 20 is moved to a predetermined level position of the mold 1. At this time, the nut body 14 moves while sliding the plate-like rubber body 14B against the inclined surface 10a or the like, and the moving position is maintained by the elastic force of the plate-like rubber body 14B.

Then, the nut body 15 of the other mold member 2 is opposed to the contact surface 22 of the square contact member 20, and the bolts 17 are passed through the bolt holes 25 from outside with the screw holes 17 aligned with the bolt holes 25. 27 is screwed into the screw hole 17 for temporary fixing. Before and after this temporary fixing, the flange portion 23 is
Rushed into. The end face 2b of the mold 2 is temporarily fixed to the mold 1
This is carried out in a state of contact with the outer surface 1a of the second member, whereby the protrusion 29 faces the tapered receiving surface 13. It is also possible to temporarily fix the square contact member 20 to the other mold member 2 and then temporarily fix the square contact member 20 to the one mold member 1.

Thereafter, for example, the bolts 26 and 27 are tightened while adjusting the level position of the mold 2 with respect to the mold 1. By this tightening, the formed piece 12 is sandwiched between the nut body 14 and the contact surface 21 to fix the mold 1 and the square contact member 20, and the formed piece 12 is fixed between the nut body 15 and the contact surface 22. The holding of the shape member 2 and the square contact member 20 can be performed by sandwiching.

At this time, since the flange portion 23 protrudes densely into the slit portion 11 of the mold member 1, the mold member 1 and the square contact member 20 are fixed without being relatively displaced. Since the protrusion 23 is densely protruded into the slit portion 11 of the mold member 2, the mold member 2 and the square contact member 20 are fixed without being relatively displaced. That is, a pair of mold members 1,
2 are connected via the corner contact member 20 without relative displacement. Further, the shape member 2 and the square contact member
When fixing the tape 20, the tapered receiving surface 13 and the tapered outer surface 28 are pressed against each other, so that the positioning of the mold member 2 with respect to the square contact member 20 in the longitudinal direction can be performed accurately.

In the above embodiment, the nut bodies 14 and 15 having one screw hole 16 and 17 are shown. However, the nut bodies 14 and 15 having two or more screw holes 16 and 17 are used. There may be. Also, as the second member, the square contact member 20 interposed between the pair of mold members 1 and 2 as the first member has been described, but this may be various members such as a shelf receiving member.

In the above-mentioned embodiment, for example, as shown in FIG. 2, a pair of upper and lower square contact members 20 are arranged to firmly connect the mold members 1 and 2. The connection used may be used. The connection of the mold members 1 and 2 via the corner contact member 20 and the like can be performed in many directions and in a large number as shown by phantom lines in FIGS.

By connecting the mold members 1 and 2 as described above, a frame assembly 35 can be formed, for example, as shown in FIGS.
A cover plate is provided on the outside of the frame body 35, and the cover plate is attached using the through hole 30. That is, as shown by the imaginary lines in FIGS. 2 and 3, the cover plate 37 to which the nut body 36 is attached is abutted on the outer surface of the corner contact member 20 after being fitted between the mold members 1 and 2 from outside, and A screw 38 passing through the through hole 30 from the inside is screwed into the nut body 36 and tightened.

[0021]

According to the present invention having the above structure, the insertion of the nut body into the dovetail portion of the first member is performed against the elasticity of the plate-like elastic member. Can be brought into close contact with each other, so that the direction and position of the nut body are
It can be maintained without shifting. Then, the second member is opposed to the nut body, and a bolt passed from the outside to the bolt hole is screwed into the screw hole to form the nut body and the second member.
By clamping the piece, the first member and the second member can be easily fixed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a connecting portion, showing one embodiment of the present invention.

FIG. 2 is a partially cutaway front view of a connecting portion in the connecting state.

FIG. 3 is a plan view of a connection portion in the connection state.

FIG. 4 is a front view of a frame body as an example of the connection structure.

FIG. 5 is a side view of a framework as an example of the connection structure.

[Explanation of symbols]

1, 2 mold material (first member) 1a, 2a outer surface 10 dovetail groove 10a inclined surface 11 slit portion 12 formed piece 13 taper receiving surface 14, 15 nut body 14A, 15A body 14B, 15B plate-like rubber body (plate-like elastic body) 14b, 15b Trapezoidal surface 16, 17 Screw hole 20 Square contact member ( second member ) 21, 22 Contact surface 24, 25 Bolt hole 26, 27 Bolt 28 Tapered outer surface

Claims (1)

(57) [Claims] To 1. A first member, the length of the dovetail groove which opens to the outside
Along the entire length in the vertical direction.
The presence of the slit portion of the forming pieces formed, the insert freely nut provided in the dovetail groove, the nut body, that
A nut body is formed by a plate-shaped main body having a surface that can freely contact the formed piece and having a screw hole formed therein, and a plate-shaped elastic body integrated with the back surface of the main body. Resist
It is configured to be insertable into the dovetail groove, and is formed on one side of the first member.
A second member having a bolt hole which can be abutted from the outside and can be fitted in the screw hole is provided, and a bolt which is freely insertable from outside and is screwably fitted in the screw hole is provided in the bolt hole. Connection structure.