| 摘要 |
PROBLEM TO BE SOLVED: To provide chairs, having a back support that is adjustable to conform to the contour of an occupant, a back part for the chair, a back support member for the back part, and the back support assembly for the chair. SOLUTION: This back support assembly 50 is formed from a plurality of back support members 56. A tensioning member 110 is made to pass through a central passage 100 formed in the back support member 56 to be fixed. A resilient biasing member 114 extends through respective outboard passages 102 and 104 formed in the back support member 56. When a tensioning device 112 is placed in the relaxed or second configuration, the biasing members 114 are designed to move the back support assembly to a fully extended contour, and a user is able to sit in the chair and apply sufficient force to allow the back support assembly 50 to conform to the occupant's back contour. Once the desired contour has been obtained, the occupant simply locks the tensioning device 112 imposition, placing each of the plurality of back support members 56 into compression and a locked position. COPYRIGHT: (C)2009,JPO&INPIT
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