| 摘要 |
An adjusting mechanism for a vehicle seat back includes a shaft rotatable when the seat back is being adjusted, and a brake for selectively preventing or permitting such rotation. The brake has a shaft-locking position for locking the shaft against rotation, and a shaft-releasing position enabling the shaft to rotate in either direction, whereby the seat back can be adjusted in either direction. The brake is actuated by a manual actuator comprised of two slotted members which have respective slots that are superimposed one over the other and are overlapped at an oblique angle. A pin extends through both slots and is movable in two directions, i.e., for locking or unlocking the shaft. In each direction of pin movement the slotted members rotate in opposite directions to either actuate or release the brake. The slotted members can comprise parallel plates or telescoped tubes.
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