JPS6320343Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a leg attachment device for a table or the like.

(Prior Art) Conventionally, in many leg attachment devices for tables and the like, a threaded portion provided at the upper end of the leg is screwed into a threaded hole provided on the lower surface of a top plate.

(Problem to be solved by the invention) According to the above-mentioned screw-in structure, variations tend to occur in the final screw-in position, and especially when the legs are prismatic, there is a possibility that the legs, sides, and sides of the top plate are not parallel and look unsightly.

The present invention is an attempt to improve the above-mentioned points, and aims to make it possible to easily and reliably set the angle at which the legs are attached to the top plate.

[Structure of the idea]

(Means for Solving the Problems) The leg attachment device of the present invention includes a pair of connectors 10 and 30 that are attached to the leg 41 side and the top plate 42 side, respectively, and are coupled to each other. One of the coupling tools 10 has a cylindrical fitting body 12 attached to a base body 11.
a plurality of engagement pieces 13 are formed at intervals on the outer periphery of the fitting body 12, and a flange 15 having a mounting hole 16 is provided on the outer periphery of the base body 11,
Furthermore, an engaging protrusion 19 is provided protrudingly on one end surface of the base body 11, and a ball 21 is elastically provided on the other end surface. The other coupling tool 30 is a cylindrical body 3 into which the fitting body 12 of the one coupling tool 10 is inserted.
Each engagement piece 13 of one of the coupling tools 10 is attached to the inner periphery of the
A plurality of engaging pieces 32 are protruded at intervals and are rotatably engaged with the cylindrical body 31, and a flange 33 having a mounting hole 34 is provided on the outer periphery of the cylindrical body 31. An arcuate guide groove 37 for engaging and guiding the engagement protrusion 19 of one of the couplers 10 is formed on one side, and an engagement recess 38 in which the ball 21 engages is formed on the other side. And the engagement piece 13 of the fitting body 12 in the one coupling tool 10
In addition, at least one of the engagement surfaces of the engagement pieces 32 of the cylindrical body 31 in the other coupler 30 is formed into a slightly spiral surface.

(Function) The leg mounting device of the present invention has a flange 1 on the leg body 41.
One coupling tool 1 attached through the mounting hole 16 of 5
The fitting body 12 of No. 0 is inserted into the cylindrical body 31 of the other coupling tool 30 that is attached to the top plate 42 through the attachment hole 34 of the flange 33, and the leg body 41 is rotated to remove the engagement piece 1.
3 and 32 through their slightly spiral surfaces, and the engagement protrusion 19 is engaged in the guide groove 37 to guide and rotate the ball 21 at a predetermined angular position. It is something that engages with.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 10 designates one connector integrally formed of synthetic resin. One coupling tool 10 has a cylindrical fitting body 12 projecting from the upper center of a square frame-shaped base body 11, and a plurality of engagement pieces 1 on the outer periphery of this fitting body 12.
3 are formed at intervals, and a mounting hole 14 is bored in the center inner bottom of the base body 11. Further, a rectangular flange 15 is provided on the upper outer periphery of the base body 11, mounting holes 16 are bored in the four corners of the flange 15, and a connecting piece 17 is protruded from the center of one side of the flange 15. A coupling hole 18 is bored in this coupling piece 17. Further, an engaging protrusion 19 is provided on one of the upper surfaces of the base body 11 in a protruding manner. Note that this engagement protrusion 19
Separate metal parts, etc. may be attached. Further, a vertical through hole 20 is formed in the other side of the base body 11, and a metal ball 21 is disposed in the upper part of this through hole 20.
A coil spring 23 is interposed between the through hole 20 and the cover 22 at the lower end of the through hole 20, and the ball 21 is elastically installed with its upper part protruding from the upper surface of the base 11 so as to be able to move up and down.

30 is the other connector integrally formed of synthetic resin. This other coupling tool 30 has a plurality of engagement pieces that rotationally engage with each of the engagement pieces 13 on the inner periphery of a cylindrical body 31 into which the fitting body 12 of the one coupling tool 10 is inserted. Pieces 32 are provided protrudingly at intervals. Further, a square flange 33 corresponding to the flange 15 is provided on the outer periphery of the lower end of the cylindrical body 31.
Attachment holes 34 are bored in the four corners of the flange 33, and a connecting piece 35 corresponding to the connecting piece 17 is protruded from one side of the flange 33, and a connecting piece 35 is connected to the connecting piece 35. A hole 36 is bored. Further, an arcuate guide groove 37 is formed on one of the lower surfaces of the cylinder 31, in which the engaging protrusion 19 is engaged and guided, and the ball 21 is engaged with the other side of the lower surface of the cylinder 31. Engagement recess 3
8 is formed.

The engagement surface of at least one of the engagement piece 13 of the fitting body 12 in the one coupler 10 and the engagement piece 32 of the cylinder 31 in the other coupler 30 is formed into a slightly spiral surface. has been done.

41 is the leg made of the wooden prism material of the table;
42 is the wooden top plate of the table.

Then, the base 11 of one coupling 10 is buried in the recess 43 formed on the upper end surface of the leg 41, the flange 15 is brought into contact with the upper end surface of the leg 41, and a wooden screw is inserted through each mounting hole 14, 16. 44 to fix one coupling tool 10 to the upper end of the leg body 41.

In addition, the cylindrical body 31 of the other coupling tool 30 is attached to the top plate 42.
At the same time, the flange 33 is placed in contact with the lower surface of the top plate 42, and wood screws (not shown) are screwed into each mounting hole 34, and the other coupling tool 30 is attached to the top plate 42. Fix it to the bottom of the four corners.

Then, the fitting body 12 in one coupling tool 10 of each leg 41 is connected to each other coupling tool 30 of the top plate 42.
is inserted into the cylindrical body 31 of the coupling tool 30, rotates one coupling tool 10 in one direction together with the legs 41, and attaches each engagement piece 13 to the upper surface of the engagement piece 32 of the other coupling tool 30 with a slight spiral surface. , and the legs 41 are attracted and fixed to the top plate 42 side.

At this time, by engaging the engagement protrusion 19 of one coupling tool 10 with the guide groove 37 of the other coupling tool 30 and rotating, one coupling tool 10 can be easily and reliably rotated to a predetermined position. At a predetermined angular position, the ball 21 is elastically engaged with the engagement recess 38 and positioned, and in this state, the flanges 15, 33 and the coupling pieces 17, 35 are opposed to each other, and the coupling piece 1
Tapping screws (not shown) are screwed into the coupling holes 18 and 36 of 7 and 35 to couple them.

[Effect of idea]

According to the present invention, the fitting body 12 of one coupling 10 is attached to the leg body 41 through the attachment hole 16 of the flange 15, and the fitting body 12 of one coupling tool 10 is attached to the top plate 42 through the attachment hole 16 of the flange 33.
Cylindrical body 31 of the other coupling tool 30 attached via 4
the engaging pieces 13, 3 by rotating the legs 41
2 through its slightly spiral surface, and the engaging protrusion 19 is engaged in the guide groove 37 to guide and rotate the ball 21 at a predetermined angular position.
By engaging with the engagement recess 38, the top plate 42
The mounting angle of the leg body 41 relative to the leg body 41 can be easily and reliably set, and therefore, even when the leg body 41 is prismatic, it can be mounted satisfactorily without angular deviation.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the device of the present invention, FIGS. 2A and B are partially cutaway exploded side views thereof, and FIGS. 3A and B are exploded plan views thereof. 10... One coupling tool, 11... Base, 12...
...Fitting body, 13...Engagement piece, 15...Flange,
16... Attachment hole, 19... Engaging protrusion, 21... Ball, 30... Other coupling tool, 31... Cylindrical body, 3
2...Engagement piece, 33...Flange, 34...Mounting hole, 37...Guide groove, 38...Engagement recess, 41...
...Legs, 42...Top plate.

Claims (1)

[Claims for Utility Model Registration] A pair of connectors are attached to the leg side and the top plate side and are connected to each other, and one of the connectors has a cylindrical fitting body protruding from the base, and A plurality of engaging pieces are formed at intervals on the outer periphery of the fitting body, a flange having a mounting hole is provided on the outer periphery of the base body, and an engaging protrusion is provided protrudingly on one end face of the base body, A ball is elastically installed on the other coupling device, and the other coupling device is rotated with each engaging piece of the one coupling device on the inner periphery of a cylindrical body into which the fitting body of the one coupling device is inserted. A plurality of engaging pieces to be engaged are provided protrudingly at intervals, a flange having a mounting hole is provided on the outer periphery of the cylinder, and one of the above-mentioned couplings is engaged with one of the end faces of the cylinder. In addition to forming an arc-shaped guide groove for engaging and guiding the protrusion,
an engagement recess in which the ball engages is formed on the other side, and the engagement surface of at least one of the engagement piece of the fitting body in the one coupling tool and the engagement piece of the cylindrical body in the other coupling tool is slightly A leg attachment device characterized by being formed into a spiral surface.