A three-dimensional curved chair back suitable for human spine

Abstract

The invention discloses a steradian chair back suitable for human vertebra, which is made from a metal material. The steradian chair back comprises a backrest frame and supporting parts which are fixed on the backrest frame, and is characterized in that the backrest frame comprises an upper frame, a lower frame and left and right side frames, wherein the upper frame and the lower frame have a curved radian and are connected with the left and right side frames to form an arc concave surface; the supporting parts have an S-shaped structure and are longitudinally arranged between the upper frame and the lower frame to form an S-shaped curved surface structure in parallel. A double-arc curved shape is formed, the chair back has a steradian structure, the function of supporting the back and the vertebra can be fully realized, the burden of the vertebra is lightened, people do not feel tired when lying on the chair back, the comfort level is improved, and the human vertebra is prevented from being injured due to long-term bad sitting posture.

Description

technical field [0001] The invention relates to a backrest of a chair, in particular to a backrest of a chair with a three-dimensional curvature suitable for the spine of a human body. Background technique [0002] The design of chairs on the market does not give full play to the effect of the backrest of the chair, especially the support and protection of the backrest to the lumbar spine. The chairs used in daily use only have a simple backrest function, and lack of support to adapt to the normal curve of the spine. Long-term use will affect people's sitting posture, which is not conducive to the health of the spine. When sitting on a chair, the muscles of the whole body will be in a relaxed state, only the spine can bear the weight of the entire upper body, and the extra pressure is added to the spinal disc, making it difficult to obtain a comfortable and healthy posture. Lumbar muscle strain and lumbar disc herniation. Contents of the invention [0003] In order to so...

AI Technical Summary

Problems solved by technology

The chairs used in daily life only have a simple backrest function and lack the support to adapt to the normal curve of the spine. Long-term use will affect people's sitting posture, which is not conducive to the health of the spine. When sitting on a chair, the muscles of the whole body will be in a relaxed state, and only the spine can bear the weight of the entire upper body, and the extra pressure is added to the spinal disc, making it difficult to obtain a comfortable and healthy posture. Lumbar muscle strain and lumbar disc herniation

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