| 摘要 |
In the present invention, a general purpose chair, using a construction with a cantilever type seat (20) fixed on the front side (21) of the seat, and with a free end on the back side of the chair, solves the problem of self adjusting of the height of the low back support (3) for users of various body heights and in various sitting positions, in the manner that does not need an active action of the user. With changing the flash of the cantilever for various users and with changing the flash when moving back and forward on the seat, the condition of comfortable and anatomically correct support is fulfilled for majority of users and positions.
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