Ergonomic chair

Abstract

An improved ergonomic chair, including a chair base, a chair cushion and a chair back located to the rear of the chair base. Support strength of cushion pads on the chair back assumes a fan-shape extending from a lower end towards the upper end, thereby dispersing the compressive stress on the lower back and supporting the back of a person. A support cushion is located on the chair back corresponding to the cervical vertebra of a person, and a head cushion, provided with a plurality of depressions, is located on the chair back above the support cushion. Accordingly, the design of the support cushion and the head cushion facilitating the dispersal of the compressive stress on the lower back and support of the back and cervical vertebra provide the chair back with the ability to appropriately support the cervical vertebra, thereby enabling neck pains to be avoided when sitting.

1 . An ergonomic chair, comprising:
 a chair base, the chair base is fitted with front and rear chair feet;   a chair cushion, the chair cushion is located above the chair base; and   a chair back, the chair back is located rear to the chair base; support strength of cushion pads on the chair back assumes a fan-shape extending from a lower end thereof towards the upper end, thereby dispersing the compressive stress on the lower part of the trunk and supporting the back of a person, a protruding support cushion is located on the chair back corresponding to the position of the cervical vertebra of a person, thereby supporting the cervical vertebra of the person when sitting, a head cushion is located on the chair back above the support cushion, and a plurality of equally spaced depressions are arranged on the head cushion, thereby providing support for the rear portion of a head of the person when sitting, in addition, the lower end of the chair back close to the lower part of the trunk of the person is a center point, and two sides of the support cushion gradually slant towards the center point to assume a fan-shape extending from the upper end to the lower end, and each of the depressions are arranged to gradually slant towards the center point to assume a fan-shape extending from the upper end to the lower end;   accordingly, the design of the support cushion and the head cushion facilitating the dispersal of the compressive stress on the lower part of the trunk and support of the back and cervical vertebra of a person provide the chair back with the ability to appropriately support the cervical vertebra, thereby enabling neck pains to be avoided when sitting, at the same time, the slanting design enabling the support cushion and each of the depressions to assume a fan-shape appropriately supports the cervical vertebra regardless of how the user changes sitting posture, thereby avoiding neck pains from occurring due to poor sitting postures.   
   
   
       2 . The ergonomic chair according to  claim 1 , wherein groove widths of the depressions of the head cushion are over two-thirds larger than the head width of a person. 
   
   
       3 . The ergonomic chair according to  claim 1 , wherein the chair cushion is a sponge cushion. 
   
   
       4 . The ergonomic chair according to  claim 1 , wherein the cushion pads, the support cushion and the head cushion are sponge cushions.