JPH10113248A - Extending/contracting chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relax by the backward extension of chair while sitting on it and to contract it so as not to take space as much as possible at the time of a disaster and nonusage. SOLUTION: An extending/contracting chair where a seat 10 is normally pressed in a winding and contracting direction by a spring 8 and the seat 10 is automatically extended/contracted is provided. Therefore, the chair is automatically extended/contracted by a simple operation so that rear space is more widely and effectively secured. Narrow space is also effectively utilized. The seat 10 is smoothly extended backwards and changed to be a comfortable chair so as to obtain easiness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extensible chair in which a seat can be automatically extended and retracted in the front-rear direction by a spring action.

[0002]

2. Description of the Related Art Conventionally, for example, chairs for playgrounds such as pachinko halls, chairs for restaurants, office chairs, etc.
When each chair is installed, it is hoped that the space behind it can be secured more effectively.
In the past, there was no suitable chair or means, and it was not possible to expect the effective use of the narrow space, and it was inconvenient and irrational.

[0003]

In particular, during a game,
During eating, working, resting, etc., the chair can be relaxed and relaxed while sitting on the chair. It would be beneficial for the chair to be able to elongate and shrink so that it could be shrunk away.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist of the present invention is to provide rails on both right and left sides of an upper surface provided on a leg rod, and to have a front rail. A machine frame in which a front winding roller is pivotally supported by a spring interposed therebetween so as to be able to be wound and rewound on a core shaft, and a front-rear movable forward and backward along left and right rails of the machine frame. The flexible seat winding portion of the seat is wound around the front winding roller and fixed to the front winding roller. The seat is always urged by a spring in the direction of tightening and shrinking the seat. It is a chair that can be expanded and contracted. Next, embodiments of the present invention will be described in detail with reference to the drawings.

[0005]

First, a rail 3 is provided on the left and right sides of the upper surface provided on the leg rod 1, and a spring 8 is interposed at the front so that the core shaft 7 can be wrapped and rewound. Is a machine frame on which the front winding roller 6 is pivotally supported. 2 is a seat plate, 4 is a plate support, and 9 is a stopper. Next, reference numeral 10 denotes a seat in which a front flexible seat winding portion 11 which is movable forward and backward along the left and right rails 5 of the machine frame 3 is fixedly wound around the front winding roller 6. is there. The spring 8 always biases the seat 10 in the direction of tightening and contracting, so that the seat can automatically expand and contract. Reference numeral 12 denotes a fixed fastening portion, 13 denotes a rolling wheel, 14 denotes a backrest, and 15 denotes a side cover. As described above, when the user sits down on the chair, a slight force is applied to the foot, so that the seat 10 smoothly expands and extends rearward against the spring 8 to change into a relaxed chair. Next, when the user raises his waist and lifts off the seat 10, the seat 10 is restored to the contracted state by the action of the spring 8.

[0006]

The chair of the present invention can be automatically expanded and contracted by a simple operation, and when installed, a space behind the chair can be more effectively secured. The effective use of the narrow space is extremely beneficial. In addition, the seat can be smoothly expanded to the rear and can be changed to a spacious chair, so you can relax comfortably.

[Brief description of the drawings]

FIG. 1 is a side view of a chair according to the present invention, which is partially cut away when it is reduced.

FIG. 2 is a partially cutaway side view of the chair of the present invention when enlarged.

FIG. 3 is a perspective view showing the entire chair of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leg rod 2 Seat plate 3 Machine frame 4 Plate support section 5 Rail 6 Front winding roller 7 Core shaft 8 Spring 9 Stopper 10 Seat 11 Seat wrapping section 12 Fixed fastening section 13 Roller wheel 14 Backrest 15 Side cover

Claims (1)

[Claims] 1. A rail 5 is provided on the left and right sides of an upper surface provided on a leg rod 1, and a spring 8 is interposed at a front portion so as to be able to be urged to wind and rewind around a core shaft 7. Roller 6
And a flexible seat wrapping portion 11 at the front, which is movable forward and backward along the right and left rails 5 of the machine framing 3, is wound around the front winding roller 6 and fixed. An extensible chair which comprises a seat 10 which is provided and is always urged by a spring 8 in a direction to tighten and contract the seat 10, so that the seat can be automatically extended and retracted.