Adjustment structure of concave condition circular arc convex circular arc of chair

摘要

(57) Abstract Topic The back rest and the seat, the suitableness which is agreeable to human body engineeringAs a circular arc of warping, when sitting down, the comfortable impression does augmentationIt designates that it makes the ru way as topic. Solutions Elastic panel 21 and motor 22 and uomu 23 and gear 24 and link 25 and controllerIt possesses with 26. As for link 25, normal position hole 251 topMaking the normal position convex section 212 of elastic panel fit 21, at the same time,Normal position hole 252 bottom in decentering convex column 241 of gear 24Making fit, it is locked. Manipulating controller 26Drive motor 22, through worm 23, gear 24The time it makes move. With this, the bottom of link 25 the lower partTo be displaced by direction, the bottom of link 25 being pulled, elastic paneru 21 is buckled in circular arc condition.