| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a chair, obtaining strong supporting force by improving the supporting rigidity of both a back plate and a backrest frame, and attaining a good sitting comfortableness so that a seated person is tucked up from right and left sides. <P>SOLUTION: A plurality of upper and lower parts of rear faces of both right and left sides in a frame 4 of the back plate 3 are provided with an engaging portion 9 and a locking portion 14 integrally projecting backward. A plurality of upper and lower locking portions 8 and engaging portions 15 provided on the backrest frame 2 are engaged with the engaging portion 9 and the locking portion 14 to relatively turn around the vertical axis, so that the back plate 3 is supported by the front face of the backrest frame 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
