| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a chair that can improve an engagement precision between an engaging portion and an engaged portion by checking the engagement condition between the engaging portion and the engaged portion before mounting a seat body on a seat support frame. <P>SOLUTION: The chair includes: the seat support frame 13 supported by an upper part of a leg body and having a plurality of front and back engagement recesses 20; the seat body 3 supported as to be adjusted back and forth with respect to the seat support frame 13; and an operation lever 31 having engagement projecting pieces 33 capable of engaging with the engagement recesses 20 and moved back and forth with respect to the seat support frame 13, and moved rturnagbly from a position that the engagement projecting pieces 33 are energized in a direction of engaging with the engagement recesses 20 to a position that the engagement projecting pieces 33 are removed from the engagement recesses 20 and that cannot be moved back and forth with respect to the seat body 3 and is coordinated as to be associated back and forth with the seat body 3 while keeping the engagement projecting pieces 33 removed from the engagement recesses 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
