Chair and chair back adjusting mechanism thereof

Abstract

The invention discloses a chair and a chair back adjusting mechanism thereof. The chair is mounted on a chair seat, and the chair comprises a chair back frame, a sliding piece and a fixed seat; the fixed seat comprises a plane part and an arc-shaped bent part which are fixedly connected or integrally formed, the plane part is positioned above the arc-shaped bent part, the chair back frame is positioned in front of the plane part, and the sliding part is mounted on the plane part in a manner of sliding up and down and is provided with a plurality of staying positions with different heights; and the chair back frame is mounted on the sliding piece in a front-back sliding manner and is provided with a plurality of different stop positions in the front-back direction. According to the technical scheme, an up-and-down adjusting structure and a front-and-back adjusting structure of the chair back frame are organically combined together so that the number of parts is reduced, and the structure is simpler.

Description

technical field [0001] The invention relates to the technical field of office furniture, in particular to a chair and an adjustment mechanism for the back of the chair. Background technique [0002] The child's body is constantly developing and growing. Too high and too low chairs will have a negative impact on the child's physical development, such as bending over, hunchback and myopia. The first thing to learn the correct sitting posture is that the feet must be at right angles to the thigh and calf. Or slightly less than 90 degrees. If the feet are suspended in the air or the ground is not solid, the center of gravity will fall completely on the thighs and buttocks, oppressing the blood vessels, affecting blood circulation, and making the child feel uncomfortable. It is necessary to change postures constantly, unable to maintain the correct sitting posture, and easy to fatigue. Affects concentration. The backrest of the chair is also very important. When choosing a chai...

AI Technical Summary

Problems solved by technology

[0004] However, those skilled in the art have found in the process of use that the above-mentioned children's learning chair realizes the lifting of the back of the chair, the lifting of the seat, and the front and rear sliding of the seat through three adjustment mechanisms; the structure is complex, and there is still room for further optimization.

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