JPH06245840A - Device for chair legs - Google Patents

Abstract

PURPOSE:To extremely simplify the operation of folding up of chair legs by a simple system. CONSTITUTION:Inside the closed circle 1, three legs 2 are to be placed in a way that the top and the bottom of each leg are penetrating through it. Each leg 2 is to be fixed with a certain space respectively along the inner circumference of the closed circle 1. And each of the legs 2 is to be constituted rotatablly with its respective fixed point 3 being the rotation axis. And the supporting edge 4 is formed on the closed circle 1. By this supporting edge, each of the legs 2, which is slanting at a certain angle to cross each other inside the closed circle 1, can be supported and fastened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leg device used in, for example, a folding chair or a folding table.

[0002]

2. Description of the Related Art Various leg devices have been proposed in the past, but it is a technical problem of the present invention to provide a leg device having a simple structure and an extremely easy folding operation. Is.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

At least three or more leg rods 2 are arranged in the closed ring body 1 in a vertically penetrating state, and each leg rod body is provided in the inner peripheral portion of the closed ring body 1 at predetermined intervals along the inner circumference. 2 are pivotally attached to each other, and each leg bar 2 is configured to be tiltable about each pivotal portion 3 as a rotation axis, and each leg bar is inclined at a predetermined angle so as to intersect with each other in the closed ring body 1. The present invention relates to a leg device characterized in that a supporting edge portion 4 capable of supporting and locking 2 is formed in the closed ring body 1.

[0005]

When stored, each leg bar 2 arranged in the closed ring body 1 in a vertically penetrating state is brought into a focused state, and when used, each leg bar 2 is used as its pivotal portion 3 as a pivot. When the leg bars 2 are tilted, crossed each other in the closed ring body 1, and each leg rod body 2 is supported and locked to the support edge portion 4 provided in the closed ring body 1, the state in which the leg rod body 2 is inclined at a predetermined angle is maintained, and the leg rod body 2 is held. Legs formed in different directions are formed at the bottom of the.

[0006]

EXAMPLE In this example, the present invention is applied to a folding chair.

The closed ring body 1 is formed in a circular ring shape.

The leg rod body 2 is formed of a pipe.

In this embodiment, three leg rods 2 are inserted into the closed ring body 1, and each leg rod 2 is axially attached to the inner peripheral portion of the closed ring body 1. The pivotally attached portions 3 are provided at regular intervals along the inner circumference of the closed ring body 1, and the leg rod bodies 2 are arranged at every 120 degrees.

Further, when each leg bar 2 is tilted, a supporting edge portion 4 for contacting and supporting the leg bar body 2 is formed in a concave shape at the upper edge portion of the inner circumference of the closed ring body 1, and the inner circumference is A tapered surface is also formed on the lower edge.

Therefore, in this embodiment, when each leg rod 2 is tilted about the pivotal portion 3 as a rotation axis and each leg rod 2 is abutted against the bearing edge 4, the leg rods 2 are closed. The lower part of the ring body 1 opens in three directions in a crossed state in the ring body 1, and the supporting edge portion 4 of the closed ring body 1
A tripod type leg is constructed with the cross bearings.

In the first embodiment shown in FIGS. 1 to 5, the backrest support rod 7 is formed by bending the upper portion of one leg rod body 2 vertically upward when each leg rod body 2 is arranged in an inclined state. Then, the insertion locking portion 8 at the upper end of each leg 2 is inserted into the insertion portion 6 provided at the corner of the seat 5 to stretch the seat 5 to form a folding chair with a backrest. .

In the second embodiment shown in FIGS. 6 to 8, a seat 5 for seating is similarly horizontally stretched on the upper ends of the leg rods 2 spread in three directions to form a folding chair without a backrest.

At the time of storage, the leg rods 2 that have been opened while lifting each leg rod 2 are bundled, the seat 5 for seat is wound around the upper portion of the bundled rod 2, and the lock attached to the seat 5 is attached. The band 9 is wound around and locked so that it can be easily stored and carried.

The present invention is not limited to this embodiment, but the shape and configuration of the closed ring body 1 can be designed as appropriate.
In order to increase the bearing strength, the bearing edge 4 may be formed in a recessed manner as in the present embodiment, or the bearing edge 4 may be formed on the tapered surface, or a mere abutment edge may be used. A buffer pad or the like may be provided at the edge.

Further, a reinforcing ring is fitted on the leg rod body 2 at a portion which abuts on the bearing edge portion 4 to enhance the bearing strength of the leg rod body 2,
You may devise so that the leg bar body 2 with weak strength may be adopted.

[0017]

Since the present invention is constructed as described above, the leg device has a simple structure and is extremely easy to fold.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment when stored.

FIG. 2 is an exploded perspective view of the first embodiment when in use.

FIG. 3 is a perspective view of a use state of the first embodiment.

FIG. 4 is a front sectional view of a main part when the first embodiment is used.

FIG. 5 is a plan sectional view of a main part when the first embodiment is used.

FIG. 6 is a perspective view of the second embodiment during storage.

FIG. 7 is an exploded perspective view of the second embodiment when in use.

FIG. 8 is a perspective view showing a usage state of the second embodiment.

[Explanation of symbols]

 1 Closure ring body 2 Leg rod body 3 Pivoting part 4 Bearing edge part

Claims (1)

[Claims] 1. At least three or more leg rods are arranged in a vertically penetrating state in the closed ring body, and each leg rod body is arranged in the inner peripheral portion of the closed ring body at predetermined intervals along the inner circumference. Pivotally mount each leg bar so that it can be tilted about each pivotal part as a pivot.
A leg device characterized in that a supporting edge portion for supporting and locking each leg rod body inclined at a predetermined angle so as to intersect with each other in the closed ring body is formed in the closed ring body.