| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a chair including a lumbar support, in which a lumbar support body is surely stopped at a fixed position, while wear of the contact part of an operation member and an engaging recessed part is suppressed, and the lumbar support body is made vertically movable stably with moderation. <P>SOLUTION: The chair includes: a back frame provided with a guide hole 52 which penetrates in the horizontal direction and is long in the vertical direction on both right and left side parts and provided with a plurality of engaging recessed parts 57 lined in the vertical direction more on the inner part from the guide hole 52; a pair of right and left operation members 43 which can be operated from the outer side part of the back frame, and whose inner side part is projected inwards from both side parts of the back frame and fitted to the guide hole 52 of the back frame slidably in the vertical direction, and which are provided with an engaging piece 45a that can be elastically engaged selectively with the plurality of engaging recessed parts 57 on the tip end part; and a lumbar support body having a back facing piece 42b linked to the inner side end part of the operation members 43 on both side parts. <P>COPYRIGHT: (C)2013,JPO&INPIT |
