| 摘要 |
A seat back recliner comprises an infinitely variable mechanism which positions the seat back angularly relative to the seat cushion about a hinge axis in one-to-one correspondence with operation of an operating lever. Once the seat back has been positioned to a desired setting by operation of the lever, the seat back remains in the selected position. External torques applied to the seat back about the hinge axis tending to displace the seat back from the selected position are resisted by a locking action between wedging members in the infinitely variable mechanism. When it is desired to position the seat back, operation of the lever is effective to rotate the seat back to the desired position while concurrently interacting with the wedging members so as to prevent the wedging members from disallowing the desired rotation. |
