Seats with adjustable backrest and adjustable inclination

Abstract

A seat whose seat back can be shifted adaptively and its inclination can be adjusted. There is an airbag cushion (3) in the seatback and the seat seat, and a spring (17) is installed in each airbag in the cushion. The bottom of the seatback and the seat A three-fork slide is installed in the middle of the seat back or on the left and right sides at the junction of the seat surface. The slide is composed of a main rod (8), a figure-eight strut (9), a tension spring (6) and three rolling bearings (5). The three bearings are placed in the slide rail (4), and the slide rail is parabolic or arc-shaped with large and small curvature radii smoothly connected, and the telescopic cylinder or series cylinder (11) pushes the slide to move along the slide rail. This seat converts the kinetic energy of the sitter when the sitting posture changes through the pneumatic system to the energy required for the displacement of the seat back and the adjustment of the inclination angle. It does not need an electric air pump and does not consume electric energy; 1. The back of the chair can automatically lean against the back of the sitter during leisure or when lying down and resting; the chair can be used for both sitting and lying down, and has a good effect of relieving sleepiness and high comfort.

Description

technical field [0001] The invention relates to a seat, in particular to a chair whose back can be automatically shifted and the inclination angle can be adjusted to meet the requirements of different body postures of the sitters and can be used for both sitting and lying. Background technique [0002] Common chairs for sitting and lying have already appeared, and "a kind of reclining multifunctional office chair" announced by CN202567167 belongs to this chair. CN203662329 announced "an adaptive airbag seat", the installation position and inclination angle of the seat and seat back are fixed, the position and / or inclination angle cannot be adjusted, the adaptability to different postures of the sitter is poor, and it cannot be used for sitting and lying down. The use area is narrow, and its self-adaptation is only the self-adaptation of airbag inflation and deflation. [0003] Seats are an indispensable common product in homes and offices. When people use chairs, they often...

AI Technical Summary

Problems solved by technology

If it is possible to design a chair back that can automatically shift and adjust the inclination angle to adapt to the three postures, and can always lean against the person's back, which is conducive to straightening the back and waist, relieves fatigue and is comfortable, there will be certain social needs. Especially for wheelchairs for the disabled, because most of the sitters are poor in physique and inconvenient to move, they need to use comfortable and common tools for sitting and lying. After searching and market research, there has been no relevant reports and physical products on the market so far.

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