JPH0529650Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The leg end has been designed so that the upper part of the leg can be leveled with a simple operation and the load applied equally to each leg. Relating to an adjustment device.

[Conventional technology]

Conventionally, when the lower part of one end of the leg was worn out or came off, it took time and effort to repair it by placing a piece of material on the lower part of the leg in order to keep the upper part of the leg level. .

As a means to solve this problem, a device has been developed in which the adjuster is moved up and down by rotating a knob from the top of the leg (as an example, see Utility Model Publication No. 16843/1983). This technology, as shown in Figure 3,
Attach the leg 01 to the lower part of the top plate 02, rotate the rotary rod 04 embedded in the shaft insertion hole 06 in the leg 01 with the operation knob 05 in the top plate, and open the rotation regulating groove 0.
8 regulates rotation, and rotation is applied via a threaded portion 07 to an adjuster star 09 that can move forward and backward in the vertical direction. Therefore, the adjuster star 09 moves forward and backward in the vertical direction, and can apply an equal load to the upper object of the leg 01 horizontally or to each leg 01.

However, with this structure, when the operating knob is rotated during adjustment, the rotation regulating groove 08 causes the adjuster star to 0.
9 moves forward and backward, but the rotational force of the rotating rod 04 is always applied to the leg 01, and the top plate 02
Rotational force is applied to the connection part 03 between the and leg 01, and in extreme cases, the rotation of the operating knob 05 directly affects the connection part 03.
This may cause damage to the connecting portion 03.

[The problem that the idea attempts to solve]

The purpose of the present invention is to provide a leg end adjustment device that does not apply excessive load to the legs, top plate, or their connecting parts, no matter how strong the rotating rod is rotated. .

[Means to solve the problem]

A base member 6 having a leg cylinder 3 for storing a guide pipe 2 with one end fixed to the mounting plate 1 in the cylinder, and an insertion hole 5 connected to the mounting plate 1 and having a female thread groove 4 cut therein.
, an adjuster star 9 in which a male thread groove 7 to be screwed into the female thread groove 4 is cut around the periphery and a shaft 24 having a square hole 8 in the center is protruded, a support base member 10 for fixing the upper end of the guide pipe 2 , and the guide pipe 2 A rotary rod 11 extends from the supporting base member 10 through the guide pipe 2 and the insertion hole 5, and has a tip shape that can be fitted into the square hole 8 of the adjuster star 9, forming a leg end adjusting device.

[Effect]

The rotary rod 11 is guided by a guide pipe 2 and has a tip protruding between support base members 12. Asia Star 9
If it is floating above the floor, turn the rotating rod 11 from above.
By rotating the shaft 24 through the square hole 8
rotates, and the adjuster star 9 rotates with respect to the base material 6. At this time, the adjuster star 9 can be advanced toward the floor by the female thread groove 4 cut in the insertion hole 5 of the base material 6 and the male thread groove 7 cut in the shaft 24 of the adjuster star 6. Therefore, the rotational force applied to the rotating rod 11 is not applied to the base material 6, the leg tube 3, the supporting base member 10, the top plate, etc.

[Effect of idea]

By employing the above configuration, the following effects are achieved.

(1) Even if the rotating rod 11 is rotated to bring the adjuster star 9 into contact with the floor, and even if the adjuster star 9 is rotated more strongly for adjustment, the force will be applied to the base material 6, the leg tube 3, and the supporting base member 10.
It does not adversely affect other parts, and allows for fairly precise leg end adjustment.

(2) The base material 6 is connected to the guide pipe 2 via the mounting plate 1, and the guide pipe 2 is further fixed to the supporting base member 10, so the guide pipe is used for guiding the rotating rod 11, which causes vibrations when rotating. 2 can function as a leg connection reinforcement.

〔Example〕

An embodiment of the present invention will be described based on the drawings. The supporting base member 10 is made by integral molding with the connecting members 19, 19..., and has recesses 20 corresponding to the connecting members 19, 19... projecting at right angles. It is connected by fitting with the top plate support rod 18 having 20... to constitute a frame for supporting the top plate. A top plate is placed on the frame, and screws 21 are screwed in from below the top support rod 18 to attach the top plate to the frame.

The support base member 10 has a nut hole 16 formed in the substantially central portion thereof in the same manner as the pipe insertion hole 17 passing through the support base member 10 in the vertical direction, and a protrusion that is fitted into the leg cylinder 3 below the support base member 10. is provided. A mounting plate 1 to which one end of the guide pipe 2 is welded is inserted into the leg tube 3, and the mounting plate 1 has its screw holes 12, 1
2 and is fixed to the lower base material 6 with screws 13, 13. The base material 6 has an insertion hole 5 concentric with the guide pipe 2.
is drilled and a female thread groove 4 is cut on its inner periphery, into which the shaft 24 of the adjuster star 9, which has a male thread groove 7 cut around it, is screwed.

When the guide pipe 2 is inserted into the pipe insertion hole 17 and the leg tube 3 and the support base member 10 are attached, and the male threaded portion 14 of the guide pipe 2 is tightened and fixed with the fixing nut 15 at the position of the nut hole 16, the support base member 10 is fixed. A guide hole from the top to the shaft 24 of the adjuster star 9 is formed. A rotary rod 11 whose lower end has a square cross section and corresponds to the square hole 8 on the upper part of the shaft 24 is inserted into this guide hole.

A groove 23 is cut in the upper end of the rotary rod 11, so that the cap 22 can be opened and the rotary rod 11 can be rotated with a screwdriver or the like.

The rotating rod 11 is made of a material with high torsional strength, such as steel, and the guide pipe, which also functions as a connecting reinforcing member for the legs 20, is made of a material with high bending strength, such as metal.

The lower surface of the adjuster star 9, that is, the portion facing the floor, is tapered to minimize the ground contact area and to facilitate rotation.

[Brief explanation of the drawing]

FIG. 1 is an assembled perspective view of a table leg according to an embodiment of the present invention, FIG. 2 is a sectional view of the table leg in an assembled state, and FIG. 3 is an explanatory diagram of the prior art. 1... Mounting plate, 2... Guide pipe, 3... Leg tube, 4... Female thread groove, 5... Insertion hole, 6... Base material, 7... Male thread groove, 8... Square hole, 9... ...Adjustment star, 10...Support member, 11...Rotating rod, 1
2... Screw hole, 13... Screw, 14... Male thread, 15... Fixing nut, 16... Nut hole, 1
7...Pipe insertion hole, 18...Top plate support rod, 19
... Connecting rod, 20 ... Leg, 21 ... Screw, 22 ...
... Cap, 23 ... Cut groove, 24 ... Shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A leg cylinder that accommodates a guide pipe with one end fixed to a mounting plate, and a base member that is connected to the mounting plate and has an insertion hole with a female thread groove cut inside. , an adjuster star with a male threaded groove that is screwed into the female threaded groove cut around the periphery and a shaft with a square hole in the center protruding, a support member that fixes the upper end of the guide pipe, and a guide pipe that is inserted from the support member into the guide pipe. and a rotating rod having a tip shape that extends through the insertion hole and can be fitted into the square hole of the adjuster star. (2) The leg end adjusting device according to claim 1, wherein the position of the adjuster star corresponding to the floor surface is tapered, and the adjuster star is rotatable with respect to the floor surface.