JPH11210723A - Coupler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strengthen joining force and facilitate an assembly and disassembly by inserting a connection member having two legs with the same section to grooves on both surfaces of plural sheet members and providing a spiral projection around the groove and the cylindrical body the same as the width of the recessed part of a coupler inserted and engagingly locked to the recessed parts of the legs. SOLUTION: Grooves 11a, 12a, 12b with a U-shaped type section are formed on both surfaces of first/second members 11, 12 and the connection member 13 installed in parallel legs 14, 15 and 16, 17 with the same section shape as the groove in a right angle direction is engagingly locked by the coupler 10. The leg 14 is inserted in the groove of the groove of the back side of the member 11 and the leg 15 is inserted to the groove 11a until the base part 17b is contacted with a lateral groove 11b. The legs 16, 17 are also inserted in the grooves 12b, 12a, horizontally alike. The coupler 10 of a circular body is inserted in the recessed parts 14a-17a pointing to the outside of respective legs, while forming the longitudinal direction of the recessed part of the leg and diameter (m) direction in the right angle and the hole 4 in the outside and rotated by 90 deg.. Then, the width (n) of the projection of the coupler 10 is contacted to the inner walls of grooves 11a, 12a, 12b and the members 11, 12 can be stuck strongly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material used for furniture, interior parts, partitions, temporary scaffolds, guardrails, civil engineering materials, etc., in which a U-shaped groove is cut on both sides. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling tool used when joining each other with a coupling member, and firmly fixes the coupling member by inserting into a groove having a U-shaped cross section, rotating the groove, and pressing against the inner surface of the groove.

[0002]

2. Description of the Related Art Various wood, metal, and plastic plate-like members used for furniture, interiors, partitions, temporary scaffolds, guardrails, civil engineering materials, and the like have conventionally been combined with nails, screws, Rivets and the like have been used. However, these connecting means have problems that they cannot be disassembled or reassembled or that they can be reused, but that they are troublesome and that the use of the same groove / hole or screw hole makes the rattle easily. Also, in terms of strength, there is no contrivance to increase the strength with a small number of members, and the purpose is merely to join, and the strength of the joint is not a problem.

Further, since a connecting member or a connecting member for connecting a plurality of members (particularly, a plate material) comes out on the side wall surface of the member, there is a disadvantage that the processing of the end face of the corner is complicated in the connected state.
In addition, even if the connecting member and the coupling tool have a simple structure,
Since the coupling tool has a structure attached to the outer wall surface of the member, there is a drawback that the coupling tool is finished in a state of protruding from the plate-shaped member.

[0004]

SUMMARY OF THE INVENTION The present invention has been conceived in order to eliminate the disadvantages of the prior art, and is provided with a U-shaped groove formed in a plate-like member and a connecting member fitted in the groove. Provided is a connector which is connected and fixed by a connector, has a strong coupling force, and is rotated to press the inner wall of the groove so as to be easily disassembled and assembled to press and fix the plate member. It is intended to be.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a coupler according to the present invention has a plurality of plate members comprising a first member and a second member formed with U-shaped grooves on both surfaces. And a connecting member having a structure in which a connecting member having two legs having the same cross-sectional shape as the groove is fitted into the groove, and a coupling tool is fitted into a concave portion provided in the leg and locked. In this structure, the coupling tool has a structure in which a spiral projection is integrally provided around a cylindrical body having substantially the same width as the width of the groove and the concave portion. Further, after the fitting is inserted into the groove, the coupler is rotated and pushed in the bottom direction of the groove, and the projecting helical projection is firmly pressed against the side wall to firmly fix the plurality of plate members. On the upper end surface, a minus, plus, or box-shaped hole for inserting the tip of a screw driver for rotating and pushing in the direction of the bottom of the groove is formed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a plan view showing the coupler of the present invention, and FIG. 2 is a side view. FIG. 3 is an exploded perspective view showing a use state of the coupling device. FIG. 4 is a plan view of another embodiment, and FIG. 5 is a side view of another embodiment. As shown in FIG. 3, the coupling structure of the coupling tool 10 is such that grooves 11 a, 12 a, and 12 b having a U-shaped cross section are formed on both surfaces of a plurality of plate members including a first member 11 and a second member 12. A connecting member 13 in which a pair of legs 14, 15, 16 and 17 having the same cross-sectional shape as the groove are connected in a direction perpendicular to the groove is slidably fitted into the groove and locked by the coupling tool 10. Connecting member 13
The recesses 14a, 15
a, 16a and 17a are recessed. Since the width of the leg has the same cross-sectional shape as the groove, the width of the recess is substantially the same as the width of the groove, but the width in the longitudinal direction is longer than the width. Thereby, a coupling tool composed of a cylindrical body 1 that is not a perfectly circular cross section, which will be described later, can be inserted.

[0007] The coupler 10 comprises a cylindrical body 1, two projections 2 a and 2 b helically projecting from the peripheral surface of the cylindrical body, and a hole 4 provided on the upper end surface. Diameter m of cylindrical body 1 of coupling tool
Are grooves 11a having a U-shaped cross section cut on both sides of the plate member.
The width is substantially the same as the width of 12a and 12b. This width is substantially the same as the width of the recess provided in the leg of the connecting member. In the embodiment shown in the drawings, projections are provided at two locations on the peripheral surface of the cylindrical body 1 so as to face each other by 180 degrees, but the number of projections may be any one location. The protrusions 2a and 2b are protrusions provided at positions facing the peripheral side surface of the cylindrical body 1 by 180 degrees,
This is a configuration in which a step-like slope is formed integrally on the peripheral side in a spiral shape. The width n of the portion where the protrusions 2a and 2b are provided is larger than the diameter m of the cylindrical body.

In mounting the coupling 10, the grooves 11a, 12a, 1
2b or the recesses 14a, 15a, 16a, 17a cannot be fitted, so that it is displaced 90 degrees and fitted along the longitudinal direction of the groove or recess in the direction of the diameter m of the cylindrical body 1.

The hole 4 is a groove formed in the upper end surface of the coupling 10 and has a structure in which the tip of a screw driver is fitted into the hole 4 to rotate the coupling. The shape of the hole 4 is formed in a minus type, a plus type, or a box type (socket type) according to the type of the tip of the screw driver. In the embodiment shown in the figures, a box (socket) type hole 4 is formed. In addition, it is also possible to cut and form another type of hole as a minus and plus type combined use type.

In use, as shown in an exploded perspective view of FIG. 3, one of the two legs 14 of the connecting member 13 is fitted into a groove (broken line) on the back side of the first member 11, and at the same time,
5 into the groove 11a on the front side from the tip of each leg,
The arm 17 advances in the groove and enters and stops until the base 17b of the leg 17 comes into contact with the lateral groove 11b provided in the first member 11. Next, a pair of legs 16, 17 provided at right angles to the legs 14, 15 are inserted horizontally into the grooves 12 b, 12 a of the second member 12 from the respective ends. First, the leg 16 is inserted into the lower groove 12a, and then the leg 17 is inserted into the upper groove 12a. The second member 12 enters until the end surface of the second member reaches the base of the leg, and the end surface of the second member 12 It comes into contact with one member 11 at a right angle and stops. In a state where the first member 11 and the second member are connected by the connecting member 13, the concave portions 14 a, 15 a, 16 a, 17 a provided on the respective legs of the connecting member 13 outward.
Are opened as square holes on the front and back surfaces of the first member and the second member, respectively. These holes 14a, 15a, 16a,
The coupling member 10 made of a circular body is inserted into 17a.

The connector 10 is formed by fitting a pair of U-shaped legs of the connecting member into the grooves of the first and second plate members, and then extending along the direction of the diameter m in the longitudinal direction of the concave portion of the leg. The hole 4 is fitted outside. Next, the tip of the screw driver is fitted into the hole 4 provided at the upper end of the fitted fitting 10 and the fitting is rotated 90 degrees. Thereby, the cylindrical body 1 is rotated by 90 degrees, and the portion of the cylindrical body 1 having the width n where the projection is provided firmly contacts the inner walls of the grooves 11a, 12a, and 12b. The coupling tool 10 is provided with a stepwise spiral projection in the clockwise direction, which is the rotational direction of the driver, so that when the driver is rotated by the driver, the coupling tool 10 rotates and pushes in such a way as to advance spirally toward the bottom. Then, the portion having the projection having a large diameter strongly presses and presses against both inner walls to firmly fix the first member and the second member via the connecting member.

The coupler 10 is brought into pressure contact with the inner wall of the groove 11a. Therefore, each leg 14, 15, 16, 17
Is not detached from the first member 11 or the second member 12, and the first member 11 and the second member 12 are joined. Surface of connecting member 13, first member 11, and second member 1
Since the surface 2 is configured to be flush with the surface, the connecting member is in a connected state in which it does not protrude out of the member, and the structure is epoch-making in that the appearance is simple and firmly fixed.

FIGS. 4 and 5 show another embodiment of the coupler according to the present invention, wherein the coupler 30 has a somewhat trapezoidal cylindrical body 31. FIG.
And two projections 32 helically projecting from the peripheral surface of the cylindrical body.
a, 32b and a hole 34 provided in the upper end surface. The diameter of the cylindrical body of the coupler is formed to be substantially the same as the width of the grooves 11a, 12a, and 12b cut in both sides of the plate member. The projections 32a and 32b are projections provided at positions 180 ° opposite to the peripheral side surface of the cylindrical body 1, and have a configuration in which a stepped slope is integrally formed on the peripheral side surface in a spiral shape. The diameter of the projection is 9
It is displaced by 0 degrees and fitted along the longitudinal direction of the groove or recess in the direction of the diameter of the cylindrical body 31. The hole 34 is a hole for a screw driver, and has a structure in which the coupling tool is rotated to advance to the bottom of the traveling groove. In this embodiment, the shape of the hole 34 is
It has a minus shape according to the type of tip of the screwdriver.

[0014]

As described above, according to the coupler according to the present invention, 1. The coupling member is fitted into the groove of the first member and the second member, and the coupler having a simple structure is provided inside the groove. Since it is firmly fixed by being rotationally pressed against the wall, a connecting tool such as a screw or a nut is not required. Further, there is an advantage that a versatile coupling structure of a plurality of members in which the coupling tool does not protrude from the side wall surface can be provided. 2. Since the connecting member has a structure in which a helical protrusion is integrally formed on the outer peripheral surface of the cylindrical body, the screw member is rotated by 90 degrees with a screw driver so as to be very easily brought into pressure contact with the inner wall of the groove to form a plurality of plate members. It can be firmly connected via the connecting member. 3. While the method of the conventional coupling is complicated, the operation of the coupling of the present invention is simple because the hole provided at the tip is rotated only 90 degrees with a screwdriver, and the operation is simple and A bond of sufficient strength can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of a coupler of the present invention.

FIG. 2 is a side view of the coupler of the present invention.

FIG. 3 is an exploded perspective view showing a configuration in which a plurality of members are connected by a connecting member using the connecting device of the present invention.

FIG. 4 is a plan view of another embodiment according to the present invention.

FIG. 5 is a side view of another embodiment according to the present invention.

[Explanation of symbols]

 1, 31 Cylindrical body 2a, 2b, 32a, 32b Projection 4, 34 holes m Diameter of cylindrical body n Diameter of portion with projection 10, 30 Coupler 11 First member 11a, 12a, 12b U-shaped groove 11b Lateral groove 12 Second member 13 Connecting member 14a, 15a, 16a, 17a Recess

Claims (3)

[Claims] 1. A groove having a U-shaped cross section is formed on both surfaces of a plurality of plate members including a first member and a second member, and a connecting member having two legs having the same cross-sectional shape as the groove is formed by the groove. In the coupling structure of a plurality of plate members having a structure in which the coupling tool is fitted into the concave portion provided in the leg and engaged with the coupling device, the coupling device is provided around the cylindrical body having substantially the same width as the groove and the concave portion. A fastener characterized in that a spiral projection is integrally provided. 2. The fitting comprising a cylindrical body is rotated into the bottom of the groove after being fitted into the groove and the recess, and is pushed in, and the projecting helical projection is firmly pressed against the inner wall of the groove to form a plurality of plates. 2. The fastener according to claim 1, wherein the member is firmly fixed. 3. The coupling tool made of a cylindrical body is characterized in that a hole for inserting a tip of a screw driver for rotating and pushing in a direction of a bottom of a groove is formed in an upper end surface of the cylindrical body. The fastener according to claim 1.