PROBLEM TO BE SOLVED: To provide a user-friendly chair preventing a change in a relative position between armrests and a seat even if the seat or a backrest is tilted and, when a user sits thereon with a hand put on the front end of an armrest, preventing the downward turning of the seat.SOLUTION: This chair includes an energizing means which pivots a seat 5 to a lower structure 4 of the chair so as to rotationally turn between a standby position where the seat is backward and upward inclined and a use position where the seat is substantially horizontal, and which energizes the seat 5 to the standby position. Armrests 7 are located at both the sides of the seat 5 so that the front ends of the armrests 7 are located forward a vertical line V which passes through the center of a pivot 6 of the seat when the seat 5 is in the standby position.COPYRIGHT: (C)2010,JPO&INPIT【課題】座や背凭れが傾動しても、肘掛けと座との相対位置が変化することがなく、かつ肘掛けの前端部に手を掛けて着座する際に、座が下方に回動することのないようにした、使い勝手のよい椅子を提供する。【解決手段】椅子の下部構成体4に、座5を、後上向き傾斜する待機位置と、ほぼ水平をなす使用位置とに回動しうるように枢着し、かつ座5を前記待機位置に付勢する付勢手段を備える椅子において、前記座5の両側部に、肘掛け7、座5が前記待機位置にあるとき、肘掛け7前端部が座の枢着部6の中心を通る垂直線Vよりも前方に位置するように設ける。【選択図】 図1