JPH06136836A - Connection device for member - Google Patents

Abstract

PURPOSE:To firmly connect members without generating a gap in a butt section. CONSTITUTION:A connection device of members is constituted of a pair of connection members 11 and 12 having an oscillation supporting point 7 mutually fitted to sides opposed to each other and combination of the opposite side receiving members 13, connection claws 18 and 18 projecting to opposite outsides are provided to the front ends of the connection members 11 and 12, and a fastening means 14 is provided to the rear end side. The connection claws 18 and 18 are fitted to the insides of interlocking sections 24 of the opposite side receiving members 13, and when the connection claws 18 and 18 is widened, connection is made and, at the same time, the connection members 11 and 12 and the opposite side receiving members 13 are drawn to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining device for members, for example, a joining device used for joining structural materials to assemble a frame structure.

[0002]

2. Description of the Related Art For example, exhibition booths, venue walls, partitions, etc. are constructed by combining structural members of various cross-sections into a frame to assemble a frame, and then tensioning a panel on the frame. Therefore, in order to assemble the frame by joining the structural members in a frame shape, a joining device for joining the structural members at a right angle is used.

FIG. 5 shows an example of a conventional joining device used for joining structural materials, while structural material A
A sharp fulcrum 3 is projected from one of the facing surfaces of the pair of coupling members 1 and 2 which are accommodated in parallel at the inner end of the coupling members 1 and 2.
The engaging claws 4, 4 that bend outward are provided at the tips of the structural members A and 2 that project from the structural material A, and the screw holes 5 are provided at one of the rear end portions of the coupling members 1, 2 and the through holes 6 are provided at the other end. The structure 7 has a structure in which a screw 7 is screwed into the screw hole 5 through the through hole 6 from the outside of the structural material A.

In order to connect the one structure A and the other structure material B, the tips of both the connecting members 1 and 2 are inserted into the other structure member B through the opening B ₁ , and the screw 7 is rotated in this state. On the other hand, when the connecting member 1 is pulled, the engaging claws 4 and 4 around the fulcrum 3 are engaged with the front wall B ₂ of the other structural member B so that both structural members A
And B are bonded and immobilized.

[0005]

By the way, in the above-mentioned conventional coupling device, since both structural materials are coupled only by the expanding force of the coupling member, there is no function of drawing both structural materials to each other, and both structural materials cannot be attracted to each other. As shown in FIG. 5, a gap C is apt to occur at the abutting end faces, and there is a problem that the partition appearance of the frame becomes unaesthetic.

Further, if the fulcrum for expanding both connecting members is sharp, the strength is weak, a strong connection cannot be obtained, and a large load cannot be endured.

[0007] Therefore, the present invention provides a joining device for members, which has no gap at the abutting ends of the members to be joined, has excellent joining strength, and is capable of withstanding a large load. The task is to do.

[0008]

In order to solve the above problems, the present invention is directed to a pair of connecting members having rocking fulcrums on opposite side surfaces, and a partner for connecting the front ends of both connecting members. A combination of a side receiving member, a coupling claw protruding toward the outer side opposite to each other at the tips of the both coupling members, a tightening means for pulling the both coupling members toward the rear end side, the other side receiving member is An engaging portion for engaging the front end coupling claws of both coupling members with the front side in a retaining manner is provided so as to open on the front side, and a retaining direction of the coupling claws of both coupling members and the engaging portion of the mating receiving member In this configuration, the contact surface with respect to is formed as an inclined surface that draws the mating member side and the coupling member side by expanding both coupling claws.

[0009]

The pair of connecting members are attached to one of the structural members to be connected to each other by using the tightening means so that the connecting pawl at the tip is located at the end of the structural member, and the other structural member is attached to the other side. When the tightening means is operated with the receiving member provided and the tip connecting claw of the connecting member is fitted in the engaging portion of the mating receiving member, the rear ends of both connecting members are pulled toward each other, and both connecting members shake. The connecting claw at the tip expands in the engaging portion around the dynamic fulcrum, both structural members are connected through the connection between the connecting member and the mating receiving member, and the engaging part between the coupling claw and the mating receiving member. By the inclined surface provided on the, the connecting member and the mating receiving member are attracted to each other by expanding the connecting claw,
As a result, the abutting portions of both structural materials are in close contact with each other and no gap is generated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, the coupling device includes a structural member A
A pair of coupling members 11 and 12 to be assembled inside and a mating receiving member 13 provided on the outer surface of the other structural member B. The coupling members 11 and 12 are both tightening means 1 on the rear end side.
4 is attached to the structural material A on the one hand.

The pair of connecting members 11 and 12 are in the shape of a rectangular block, and in the middle of the side surfaces facing each other in the state of being arranged in parallel, the semi-circular arc-shaped projection 1 provided on the one connecting member 11 is provided.
5 and a swinging fulcrum 17 composed of a semi-circular arc-shaped recess 16 provided in the other coupling member 12 is formed.
Is the swing fulcrum 1 due to the fitting of the protrusion 15 and the recess 16
It becomes relatively swingable around 7.

When the swing fulcrum 17 is formed by the semicircular arc-shaped projection 15 and the recess 16, a sufficient contact area can be secured and the load supporting force is improved.

The connecting claws 18, 18 which are connected to the opposite ends of the connecting members 11 and 12 at positions close to the side surfaces thereof project toward the opposite outer sides, and the connecting members 11, 12 are also formed.
The tightening means 14 provided on the rear end side of the
A screw hole 19 formed at the end of the other coupling member, a through hole 20 formed at the end of the other coupling member 12, and a screw 21 screwed into the screw hole 19 from the through hole 20. By pulling the rear ends of 11 and 12 toward each other, the coupling claws 18 and 18 are expanded about the swing fulcrum 17.

On the other hand, the structural member A for accommodating the connecting members 11 and 12 is formed of a pipe having a rectangular cross section, and screws 21 are formed on the side surfaces.
Is provided with a through hole 22 and a notch 23 for fitting and inserting the mating receiving member 13 is provided at a position near the end of at least one of the upper and lower surfaces. 18 is housed in this structural material A so as to face the end of the one structural material A, and by screwing the screw 21 inserted into the insertion hole 22 and the through hole 20 from the outside of the one structural material A into the screw hole 19, The stored state is maintained.

The mating receiving member 13 has a width and a thickness that fit in the one-sided structural member A, and the tip coupling claws 18, 18 of both coupling members 11, 12 are fitted to the front side in a retaining manner. The engaging portion 24 is provided so as to open on the front surface side.

The engaging portion 24 is formed into a shape in which the front side is opened with a narrow width and the inside is a wide space so that the engaging claws 18, 18 approaching each other in a back-to-back manner can be fitted from above and below. Both the engaging claws 18, 18 fitted in the engaging portion 24 are in the form of stoppers on the front side of the mating receiving member 13.

In the case of FIGS. 1 to 3, this mating receiving member 1
3 is integrally formed on the outside drawing of the other structural material B formed in the rectangular pipe, but this mating receiving member 13 is formed separately from the other structural material B as shown in FIG. On the other hand, a structure in which a mounting seat 27 with a screw hole 26 for fixing with a screw 25 to the outer surface of the structural material is provided may be adopted.

Abutment surfaces 28 and 29 in the slip-out preventing direction are provided between the coupling claws 18 and 18 of both the coupling members 11 and 12 and both sides of the mating receiving member 13 that sandwich the opening of the engaging portion 24.
The contact surface is formed as an inclined surface that draws the mating receiving member 13 and the coupling members 11 and 12 toward each other by expanding the coupling claws 18 and 18.

Further, as shown in FIGS. 2 and 3, the connecting members 11 and 12 are each provided with a groove on the outer peripheral surface thereof closer to the tip end side than the swing fulcrum 17, and the outer peripheral surfaces of the both groove portions are formed. An elastic ring 30 such as rubber or a coil spring is externally fitted to the coupling claw 1
8 and 18 may urge the elastic force in the closing direction at all times.
The insertion work of can be done easily. The elasticity is not limited to that shown in the figure, and may be appropriately combined by using an elastic ring or a spring.

The joining device of the present invention is constructed as described above, and in order to join the one structural material A and the other structural material B, a pair of coupling members 11 and 12 are incorporated in the end portion of the one structural material A. The screw 21 is screwed into the screw hole 19 from the outside, and the mating receiving member 13 is provided on the outer surface of the other structural member B.

Connecting claws 18 and 18 of both connecting members 11 and 12
2 with the screws 21 set so that they approach each other.
As shown in FIG.
8 is inserted into the engaging portion 24 of the mating receiving member 13.

Next, when the screw 21 is rotated from the outside of the one structural material A in the screwing direction, the rear end of the one coupling member 11 is pulled to the other coupling member 12 side by the screw 21, as shown in FIG. Therefore, the one-side coupling member 11 rotates about the swinging fulcrum 17, and the coupling claws 18 and 18 expand to both sides in the engaging portion 24, so that the coupling claws 18 and 18 and the mating receiving member are formed. 13 becomes tightly bound.

When the connecting claws 18, 18 are expanded, both connecting claws 1
Since the contact surfaces 28 and 29 of the engaging portions 13 and 8 and 18 are inclined, the contact surfaces 28 and 29 of the mating claws 18 and 18 are expanded by the expansion of the coupling claws 18 and 18, so that the mating member 13 and the mating receiving member 13 are pressed. Coupling member 1
1 and 12 are caused to move closer to each other, so that the tip of one structural material A is pressed against the outer surface of the other structural material B, and both structural materials A and B are perpendicular to each other with no gap in the butted part. Be combined with.

FIG. 6 is a plan view showing a comparison between a coupling state using the coupling device according to the present invention and a coupling state using the conventional coupling device, and FIG. 6A shows a coupling state according to the coupling device of the present invention. Since the end of the structural material A comes into contact with the other structural material B without a gap, the abutting end serves as a portion for preventing lateral shake, and prevents the lateral contact of the one structural material A after joining. And a strong bond is obtained.

On the other hand, FIG. 6B shows a connection state using the conventional connection device shown in FIG. 5, in which a gap C is formed between the end of one structural material A and the other structural material B. On the other hand, the function of preventing the lateral touch on the one end of the structural material A does not occur, and therefore, as shown in FIG. 6C, the lateral touch can easily occur when an external force in the lateral direction is applied to the one structural material A. become.

As described above, in the joining device of the present invention, by pulling both structural members A and B together at the time of joining, it is possible to obtain a strong joined state in which no side contact occurs.

If the above-mentioned one structural member A is a horizontal crosspiece and the other structural member B is a vertical post, for example, a frame can be constructed by assembling the horizontal crossbar and the vertical post into a frame shape by the above-mentioned connection. These frames can be used as booths for exhibitions and walls of venues by installing plates.

When the connection is disassembled, the screw 21 may be loosened, and the connection claws 18, 18 may be brought close to each other to be removed from the mating receiving member 13.

[0030]

As described above, according to the present invention, the pair of coupling members having the swinging fulcrums on the opposite side surfaces thereof are provided with the coupling claws on the front end side and the tightening means on the rear end side, and the mating side receiving member is provided. By expanding the coupling claw fitted in the engaging portion of the member by the tightening means, the coupling member and the mating receiving member are coupled together, and the two are pulled toward each other. The abutting surfaces come into pressure contact with each other, and a finished connection state with no gaps in the abutting surfaces can be obtained.

Further, since the connecting claws of the two connecting members are expanded at the swinging fulcrums on the opposite side surfaces, and the connecting member and the mating receiving member are pulled together to be connected, a strong connected state can be obtained. It enables a connection that can withstand a large load.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a coupling device according to the present invention.

FIG. 2 is a cutaway plan view of an essential part showing a state before being combined with the same as above.

FIG. 3 is a cutaway plan view of an essential part showing the state at the time of joining as well.

FIG. 4 is a perspective view showing another example of a mating receiving member.

FIG. 5 is a cutaway plan view of a main part showing a conventional coupling device.

FIG. 6A is a plan view of a coupled state using the coupling device of the present invention, B is a plan view of a coupled state using a conventional coupling device,
C is a plan view showing the occurrence of lateral touch in the same as above.

[Explanation of symbols]

 11, 12 Coupling member 13 Counterpart receiving member 14 Tightening means 17 Swinging fulcrum 18 Coupling claw 19 Screw hole 20 Through hole 21 Screw 24 Engaging portion 28, 29 Contact surface

Claims (1)

[Claims] 1. A combination of a pair of coupling members provided with rocking fulcrums on opposite side surfaces and a mating receiving member for coupling the tip ends of both coupling members, which are opposite to each other. A coupling claw protruding outward is provided, and a tightening means for pulling both coupling members together is provided at the rear end side. In the mating receiving member, the tip coupling claws of both coupling members are fitted to the front side in a retaining manner. The engagement portion is provided so as to open on the front side, and the contact surfaces of the coupling claws of both the coupling members and the mating side receiving member in the retaining direction of the mating side receiving member are separated from each other by the expansion of the coupling claws. A joining device for a member formed on an inclined surface that draws the joining member side.