Auxiliary chair for improving posture for use with a chair

Abstract

The present invention consists in a posture-improving auxiliary chair for use with a chair designed to improve the posture. An object of the invention is to improve the posture by routinely using the auxiliary chair which is placed on a chair. According to this invention, the front center of the concavely curved seat face portion is recessed in the form of a band extending toward the rear center, and raised portions gently raised from the lateral sides toward the recessed portion are formed on the front section of the seat face portion. In the vicinity of the foots of the raised portions there are formed fan-shaped inclined surfaces gently slanting in an oblique direction toward the front. In the center of the bottom of the seat formation part there is formed a convexly curved portion, on forward and rearward extensions of which there are formed a front stop portion and a rear stop portion, respectively. It is a seat formation support part that includes these component elements and supports the seat formation part from below. These parts are joined together in one-piece and all of the corners are chamfered, whereby a generally rounded auxiliary chair for use with a chair for improving the posture is obtained.

1 . An auxiliary chair for improving the posture for use with a chair, said auxiliary chair having a size and thickness such as to allow a person to sit with his or her buttocks resting on the auxiliary chair, and comprising a top part and a bottom part, characterized in that the top part has a concavely curved seat face portion in which a recessed portion is formed, said recessed portion being recessed in the form of a band extending from the front center of the seat face portion toward the rear center thereof, a raised portions being formed in the front section of said seat face portion, said raised portions being gently raised from the lateral sides of the seat face portion toward said recessed portion, in the vicinity of the foots of said raised portions there being formed fan-shaped inclined surfaces gently slanting in an oblique direction toward the front, said bottom part having a convexly curved portion in the center thereof and stop portions formed forwardly and rearwardly on extensions of the convexly curved portion. 
   
   
       2 . The auxiliary chair according to  claim 1  which is devoid of said recessed portion.