| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power mechanism for a seat which can prevent backlash between a deceleration mechanism part and a seat main body, and can smoothly actuate the deceleration mechanism part.SOLUTION: A tilt mechanism as a power mechanism for a seat includes: a seat main body having a wheel holding part; a deceleration mechanism part; and a pressing member 5 which presses a worm wheel arranged on the deceleration mechanism part to the wheel holding part. The pressing member 5 includes a first bush 51 having a first sliding part 51a, a second bush 52 having a second sliding part 52a, and a biasing member 53. The second sliding part 52a slides to one direction side of a circumferential direction with respect to the first sliding part 51a by biasing force of the biasing member 53. In conjunction with the slide, a distance between the first bush 51 and the second bush 52 in an axial direction increases.</p> |
