JP2008089183A - Frame material joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint for connecting and fixing a vertical frame to a horizontal frame without using bolts. <P>SOLUTION: The joint is mounted in an inner case 3 mounted in a hollow portion of a frame material by impelling a pair of operating plates 4 inside. At the front ends of the operating plates, lock pieces 7 are provided to be locked in lock grooves 12 of the other frame material. On the bases of the operating plates, operating members 6 are provided for moving the pair of operating plates in the longitudinal direction at the same time. With the operation of the operating members 6 when moving the pair of operating members to the bases, a space between the operating plates at their front ends are increased. Thus, the lock pieces 7 can be locked in the lock grooves 12 of the frame material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The joint for frame material of the present invention is used to construct a frame for partitioning an exhibition space at a trade fair or the like, or an assembly-type product display stand used for constructing a product display space. is there.

Conventionally, various frame materials of this type configured as mold materials have been proposed. This type of frame member needs to connect and fix the vertical member and the horizontal member with a joint, but both the joints use bolts, and the fixing work is troublesome, which hinders the speeding up of the assembling work.
JP 2000-64437 A

The present invention is a joint used by inserting a longitudinal groove and a through hole perpendicular to the groove in the steel for assembling the frame material, and inserting and inserting the through hole into the through hole. The joint corresponds to the position of the groove. A notch portion is provided, and an outer peripheral edge portion of the notch portion is provided with a convex portion that engages with the edge portion of the through-hole to restrict movement in the axial direction and movement in the rotational direction.
In this configuration, although the movement of the joint is restricted, a bolt must be used for coupling with the frame member.

  An object of the present invention is to improve the efficiency of assembling work of a frame and the like by obtaining a joint capable of connecting and fixing a vertical frame and a horizontal frame by a one-touch operation without using a bolt.

The present invention relates to a joint for connecting and fixing a first frame member having a longitudinal locking groove on an outer wall and a second frame member having a hollow portion at right angles.
The frame material joint is mounted by biasing a pair of operating plates inwardly in an inner case mounted in the hollow portion of the second frame material. A locking piece for locking in the locking groove of the first frame member is provided at the distal end portion of the operating plate, and the distance between the pair of operating plates is narrow at the distal end side and wide at the base side, and between the pair of operating plates. Is provided with an interval regulating member. An operation member for simultaneously moving the pair of operation plates in the front-rear direction is provided at the base portion of the pair of operation plates, and the operation at the distal end portion is performed when the pair of operation plates are moved to the base side by the operation of the operation members. The interval between the plates is widened so that the locking piece is locked in the locking groove of the first frame member.

The actuating plate is configured by bending one spring plate as shown in the following embodiment, and in addition, the two actuating pieces are opposed to each other, and a spring is interposed between the actuating pieces to urge inward. You can also do it. In short, the distance between the operating plates is expanded by the action of the spacing regulating member due to the backward movement of the operating pieces (the direction opposite to the direction in which the tip of the operating piece protrudes from the inner case, that is, the base side direction of the pair of operating plates). The stop piece is locked in the locking groove of the frame material, and the action of the gap regulating member is released by the movement in the reverse direction, whereby the action plate moves inward and the distance between the two action plates at the tip is reduced. Any structure may be used as long as the engagement between the engagement piece and the engagement groove of the frame member is released.
And the structure for moving an operation piece back and forth can also be made into the structure by lever operation other than the cam shown in an Example.

According to the present invention, the joint is mounted in the hollow portion of the first frame member, and is inserted into the locking groove of the second frame member in a state where the distance between the pair of operation plates is narrowed. The first frame member and the second frame member can be connected and fixed in an orthogonal state by operating and slightly retracting the operating plate.
In the above, since it can be fixed only by operating the operation member without using bolts, not only is workability good, but since both the frame members are fixed by retraction of the operation plate, both the frame members are maintained in a close contact state and strong. The assembled state can be obtained.

  Examples of the present invention will be described below.

FIG. 1 is an exploded perspective view showing an embodiment of the joint of the present invention.
The frame material 1 is a frame material having a vertically long cross section, and a hole 2 for tool insertion is provided on the side wall.
Two inner cases 3 are attached to the frame member 1 at the top and bottom. The inner case 3 is provided with an operating piece 4, a shaft 5 as a distance regulating member, and an eccentric cam 6 as an operation member.

FIG. 2 is a plan view of the operating plate 4. The operation plate 4 constitutes a pair of operation plates facing each other by bending one spring plate. The front end is bent outward to form a locking piece 7, and the front end of the operating plate 4 including this locking piece is projected from the inner case 3.
The central portion of the working plate 4 is partly cut out and protrudes outward to form a spring piece 8. The spring piece 8 presses and contacts the inner wall of the inner case 3 and acts to urge the operating plate 4 including the locking piece 7 inward.
The facing interval of the operation plate 4 is narrow at the tip side and wider at the base side than the center part, and the shaft 5 is located at the boundary between the narrow part and the wide part. A round hole 9 in which the eccentric cam 6 is mounted is provided at the base of the operating plate 4 (FIG. 3), and the eccentric cam 6 is mounted in the round hole.
The lower part of the base of the operating plate 4 is bent to the front end side as a receiving spring 4a, and a small protrusion 4b is formed on the upper surface of the receiving spring 4a.

As shown in FIG. 4, the eccentric cam 6 is longer on the front side than the rotation axis O in plan view and shorter on the rear side. A wrench hole 10 is provided to lock the wrench on one end face.
An annular groove 6a is formed in the center of the eccentric cam 6 in the axial direction, and one incomplete portion 6b is formed in the groove 6a.
The eccentric cam 6 is attached to the inner case 3 by an attachment shaft (not shown), and the position of the wrench hole 10 is made to correspond to the tool insertion hole 2 of the frame member 1 from the outside of the frame member 1. The eccentric cam can be rotated by inserting a wrench.

FIG. 5 shows a state where the interval between the locking pieces 7 of the operating plate 4 is narrowed. At this time, the eccentric cam 6 is positioned forward (locking piece side) on the side longer than the shaft. In other words, the operating plate 4 is located in the front, is not subject to the restriction of the shaft 5, is pushed inward by the action of the spring piece 8, and the interval between the locking pieces 7 is narrowed. At this time, the small protrusion 4b of the receiving spring 4a fits into the groove 6a of the eccentric cam 6 and prevents the eccentric cam 6 from coming off.
When the eccentric cam 6 is rotated 180 degrees with a wrench from this state, the side longer than the shaft of the eccentric cam is located rearward, so that the operation plate 4 moves slightly rearward. Since the shaft 5 widens between the opposing working plates 4 by this rearward movement, the locking piece 7 is opened to the outside and locked to the locking groove 11 of the frame material.
When the eccentric cam 6 rotates, the small protrusion 4b of the receiving spring 4a moves beyond the incomplete portion 6b of the groove of the eccentric cam. The eccentric cam 6 is locked when the small protrusion 4b exceeds the incomplete portion 6b.
Therefore, when the above operation is performed in a state where the inner case 3 is mounted in the hollow portion of the other frame member 1, the two frame members can be connected and fixed.

  According to the present invention, the column and the beam can be fixed only by operating the cam of the joint, that is, without using a bolt or the like, and the workability of the assembly work such as the frame can be improved. It has industrial applicability.

The disassembled perspective view which shows the mounting state to the frame material of the joint of this invention Similarly, a plan view of the operating piece Similarly, front view of the operating piece A plan view of the eccentric cam Similarly, a plan side perspective view with the locking piece closed Similarly bottom side perspective view Similarly, a plan side perspective view with the locking piece open Similarly bottom side perspective view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame material 2 Hole 3 Inner case 4 Acting piece 5 Shaft 6 Eccentric cam 7 Locking piece 8 Spring piece 9 Round hole 10 Wrench hole 11 Frame material 12 Locking groove

Claims (2)

A first frame member having a locking groove in the longitudinal direction on the outer side wall and a second frame member having a hollow portion are connected and fixed orthogonally,
A pair of operating plates are urged inwardly and attached to the inner case attached to the hollow portion of the second frame member, and are engaged with the engaging grooves of the first frame member at the distal end portion of the operating plate. A locking piece is provided, and the facing distance between the pair of operation plates is narrow at the tip side and wide at the base side, a spacing regulating member is disposed between the pair of operation plates, and a pair of the operation plates is disposed at the base of the pair of operation plates. An operating member is provided for simultaneously moving the actuating plate in the front-rear direction,
When the pair of actuating plates are moved to the base side by operating the operating member, the interval between the actuating plates at the distal end portion is widened so that the locking piece is locked in the locking groove of the first frame member. , Joints for frame materials. The joint for frame material according to claim 1, wherein the operation member is an eccentric cam.

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