Chair capable of regulating seat cushion and backrest by joint means

Abstract

The invention discloses a chair capable of regulating a seat cushion and a backrest by joint means. The chair comprises a seat cushion bracket and a backrest bracket, wherein the seat cushion bracket is connected with the backrest bracket through a plurality of angle regulators; the chair capable of regulating the seat cushion and the backrest by joint means is characterized in that the seat cushion is arranged on the seat cushion bracket; an upper backrest and a lower backrest are arranged on the backrest bracket; and the upper backrest and the lower backrest are mutually connected through a movable connecting rod. The chair capable of regulating the seat cushion and the backrest by joint means is simple structure and convenient to operate, and is capable of prolonging the cycle of seating gesture fatigue; and the seating comfort is improved by the principle of the human mechanics.

Description

technical field [0001] The invention belongs to a seat, in particular to a seat cushion and backrest linkage adjustment type seat. Background technique [0002] It is self-evident that sitting posture is widely used in human life. However, diseases caused by sitting posture have also become the focus of people's increasing attention. People's pursuit of comfort and rationality of sitting posture has never stopped. However, almost all designs mostly stay on cushions. In terms of the shape, material, elasticity and the change of the angle between the backrest and the backrest, the current seat cannot be designed according to the human body structure, that is, the cervical spine is slightly lordotic, the thoracic spine is slightly concave, and the lumbar spine is slightly lordotic. To create a seat that fits the characteristics of this physiological structure to the greatest extent, that is to say, to strengthen the rationality of supporting various parts of the human body. In ...

AI Technical Summary

Problems solved by technology

[0002] It is self-evident that sitting posture is widely used in human life. However, diseases caused by sitting posture have also become the focus of people's increasing attention. People's pursuit of comfort and rationality of sitting posture has never stopped. However, almost all designs mostly stay on cushions. In terms of the shape, material, elasticity and the change of the angle between the backrest and the backrest, the current seat cannot be designed according to the human body structure, that is, the cervical spine is slightly lordotic, the thoracic spine is slightly concave, and the lumbar spine is slightly lordotic. To create a seat that fits the characteristics of this physiological structure to the greatest extent, that is to say, to strengthen the rationality of supporting various parts of the human body. In addition, the fatigue caused by a single sitting posture that remains unchanged for a long time cannot be ignored, and the fatigue cycle varies from person to person. If the distribution of the center of gravity of each part of the human body cannot be changed independently and conveniently, the comfort will not be discussed.

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