| 摘要 |
PROBLEM TO BE SOLVED: To set outer peripheral teeth in a wide range, to a division pole for stopping rotation while performing backlash tightening of a recliner in a circumferential direction.SOLUTION: A recliner 4 is configured so that: four poles 30 supported by a guide 20 are pressed by a rotary cam 40 from inside of a radial direction, for engaging outer peripheral teeth 31 with inner peripheral teeth 12A of a ratchet 10, so that relative rotation between the ratchet 10 and the guide 20 is stopped. One of the four poles 30 is a division pole 30A for extending in a circumferential direction by being pressed by the rotary cam 40, and engaging with the inner peripheral teeth 12A of the ratchet 10, and the division pole 30A is divided into an interior angle piece 30C and an exterior angle piece 30D, in which the interior angle piece 30C is pressed by the rotary cam 40 and presses the exterior angle piece 30D to the circumferential direction and outside of the radial direction, for engaging the outer peripheral teeth 31 with the inner peripheral teeth 12A of the ratchet 10. In the engagement state, the respective pieces 30C, 30D are allocated at three points in the circumferential direction from inside by the rotary cam 40.SELECTED DRAWING: Figure 8 |
