Seat with self-adjusting chair back

A guide groove is formed in a seat bearing part, a guide pin is arranged on a base, so that the seat bearing part is connected with the base and moves up and down relative to the base, a linkage relation is formed between the seat bearing part and a back support through a linkage part, when a person sits on the seat, the back support gets close forwards, and the back of the seat is automatically adjusted. When a seated person leaves the seat, the seat bearing part and the back support are made to return to the initial state through the elastic reset part, the sitting posture of the human body can be corrected, the human body can be well supported, the linkage part is only provided with two parts, the structure is simple, and production is more facilitated. 本实用新型公开了一种具有自调节椅背的座椅，通过在座承重件上设导槽，在基座上设导销，使得座承重件与基座连接，并相对于基座上下运动，再通过联动件让座承重件与背支架之间形成联动关系，使得座椅有人就坐时，背支架向前靠拢，并驱动椅背对人体背部起到支撑作用，在就坐者离开座椅时，又通过弹性复位件使得座承重件与背支架回到初始状态，具有纠正人体坐姿，对人体起到良好支撑的作用，且联动件仅有两个部件，其结构简单，更利于生产。