JP3089959U - A chair that is easy on the back - Google Patents

Abstract

(57) [Abstract] [Problem] A stable chair that relieves back pain and does not tire the hips or back even when sitting for long periods of time. Solution: An oval, deep-dish shape with an open bottom is molded from plastic or other materials, and the knees are fitted lower into the seat plate of the chair, providing wide support around the buttocks and preventing the ischial bones from touching the open bottom. The backrest supports the back, reducing the strain on the hips.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention pertains]

This relates to a structure of a chair or a stool that prevents fatigue in the back or waist.

[0002]

2. Description of the Related Art

The seating area of the chair is flat and cushioned with springs, etc. Some chairs have a concave back that curves inward to match the shape of the body, while others tip over and pull back when you lean on them.

[0003]

[Problem that the invention aims to solve]

If the board supporting the lower back is flat, the upper body is supported by the sitting bones, which directly affects the lower back and back, placing a strain on them. If the board is made of springs, when the springs are crushed, the knees will bend upwards and the lower back will be stretched. The backrest will be separated from the board, and the back will not be supported.

[0004]

[Means for solving the problem]

The flat seat is supported around the buttocks, and the seat bones are not touched. The knees are lowered and fitted into the seat board. The backrest also supports the upper body with the back, and is positioned so that it does not separate from the body.

[0005]

[Embodiment of the Invention]

When you sit on the open-bottomed, deep-dish oval chair, the edges and sides of the deep-dish support your buttocks, so your sitting bones don't come into contact with it and your hips and back don't get strained. The backrest also rests on the seat board and is curved outward, supporting your back and relieving strain on your hips.

[0006]

EXAMPLES

I will explain with reference to the attached drawings. Reference number 1 is the buttocks support, made of plastic or other material molded into a deep oval dish shape. Each part of the buttocks is widely supported by 1, 1a, and 1b. Reference number 2 is the open bottom, which does not come into contact with the ischial bones and allows them to float. Reference number 3 is the backrest, which is curved outward and is positioned above the seat board to support the back.

[0007]

[Effects of the invention]

It provides wide support around the buttocks, so it is stable and does not tire you out. It does not press down on the ischial bones, so you can endure it for a long time without straining your lower back or back. It does not raise your knees, so you do not bend. You can rest your back. It can also be used on a zaisu chair.

[Brief description of the drawings]

FIG. 1 is a plan view showing a backrest and a hip support.

FIG. 2 is a side view showing the embodiment.

FIG. 3 is a perspective view showing the hip support and backrest fitted into a chair.

[Explanation of symbols]

1. Buttock support section 2. Bottom opening section 3. Backrest section

Claims (1)

[Scope of utility model claims] [Claim 1] A chair made by molding an oval deep dish shape with an open bottom out of plastic or the like and fitting it into the seat plate of a chair.