To provide a chair, even when repeating tilt of a backrest, preventing loosening of a coupling part between the backrest and a backrest support body, and has superiority in a forming cost of the backrest.
A first coupling part 21 of a backrest has fitting projections 24 and 25 protruding towards a second coupling part 22 of a backrest support body 7, and the second coupling part 22 of the backrest support body 7 has fitting recesses in which the fitting protrusions 24 and 25 are fitted. The fitting protrusions 24 and 25 have guide faces 28 and 29 which face and slide to energize the first coupling part 21 and the second coupling part 22 so as to come closer to each other with downward displacement of the backrest 8, when the fitting protrusions 24 and 25 are fitted in the recesses.
IGARASHI RYO
| JPH08252148A | 1996-10-01 | |||
| JP2000079034A | 2000-03-21 |
| US20050023879A1 | 2005-02-03 |
Suzuki Mitsuyoshi
Yasushi Matsunuma