| 摘要 |
<p>The present invention provides a seat back. The seat back can reduce the number of parts and simplify the structure, and can increase the ease of assembling. A storage part for storing a handrail body (49) is formed in the seat back body; a horizontal shaft, surrounding about the base end side, of the handrail body (49), can be rotabably supported on the seat back frame, and can freely switch between storage status and the use status; a brake pin (35) is protrudingly arranged at a handrail support part (32); a guide groove (52) is formed at the end part at the width direction of the base end part of the handrail body(49); the guide groove (52) is guided by the brake pin (35); the end part at the width direction of the base end part compirses a bushing (50); the horizontal shaft inserts into and supports the bushing (50); and the guide groove (52) is formed in the bushing (50).</p> |
