| 摘要 |
A device for adjusting the position of at least one movable part (2) of a vehicle seat (1), of the type comprising two connection elements (4, 5), at least one (4) of said two elements being secured to said movable part (2) of the seat, means (6) for connecting the two elements (4, 5) together such as to enable at least the element (4) connected to the movable part (2) to rotate about a first axis (A1), and control means (7) by which said element (4) connected to the movable part (2) of the seat is enabled to rotate or, alternatively, be locked in a preferred angular position; in which the contr ol means (7) comprise an at least partly circular toothing (9) provided on said element (4) connected to the movable part (2) of the seat, at lest two gears (10A, B) engaging with said toothing (9) and movable with planetary motion about said first axis of rotation (A1), and a lever system (17, 18) arranged to shift said gear (10A, B) into a first position (B) in which said gears engage with each other and with said toothing (9), so preventing rotation of said element (4) connected to the movable part (2) of the seat, and into a second poison (R) in which the gears (10A, B) engage only with said toothing (9), so enabling rotation of said element (4) connected to the movable part of the seat, said lever system (17, 18), gears (10A, B) and toothing (9) maintaining the gears (10A, B) always in mutually complementary positions su ch as to always enable the gears to engage with each other when the gears pass form said first to said second position.
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