Chair with seat back

Abstract

Abstract PURPOSE:To obtain a satisfactory appearance and the satisfactory fitting sense of a user and to follow the various positions of the user when the user takes a rest by enlarging the seat space between a seat back part and a seat part by moving the seat part forward while tilting the seat back part backward with the internal mechanism of the title chair when the user leans against the seat back part and applies a load to the seat back part. CONSTITUTION:When the user of the chair is under a standard position state, the load is separated through a seat part base 73 to the front and rear application point parts of a supporting point part 74 of a balancing member 72, and since the balanced amount is offset by a balancing function, a spring which is not so strong is enough for an extension spring 85. When the user of the chair is under a resting state, although the user leans against the seat back part and tilts a back supporting rod 76 backward around a turning shaft 74, the back supporting rod 76 is tilted backward with the approximately same leaned condition for both a heavy person and a light person also by the balancing function, the tip side of the balancing member 72 circularly rotates upward around the turning shaft 74 by the tilting of the back supporting rod 76, an L-shaped link 77 is gradually risen, and the seat part base 73 is moved forward.

Inventors

• 👤 Masamitsu Miyashita
• 👤 宮下　正光
• 👤 Tsunetaro Ito
• 👤 恒太郎 伊藤
• 👤 Miyoshi Katagiri
• 👤 片桐　美義
• 👤 Yoichi Suzuki
• 👤 陽一 鈴木

Bibliographic Details