| 摘要 |
A seat reclining apparatus (2) including a first member (11) attached to one of a seatback frame (3) and a seat cushion frame (4), a second member (15) attached to the other one of the seatback frame and the seat cushion frame, and a cam member (13) bringing the engaging members to move in a radial direction so as to engage or disengage between engaged portions (11a) and the engaging members characterized in that the cam member includes a pivot axis arranged in such a manner that a simultaneous engagement or disengagement is achieved among each engaging member (12) and the corresponding engaged portion when center axes of the first member and the second member are offset to each other by an amount corresponding to a clearance (C) formed between the first member and the second member because of a load applied to the seatback frame in a case where a seatback is tilted. |
