| 摘要 |
A height adjuster operation mechanism which is adapted to independently adjust the heights of the front and rear portions of a seat cushion of an automotive seat. In the operation mechanism, front and rear rotary shafts are rotatably mounted to the right and left upper rails of a seat adjuster, a driving rotary member for providing a driving rotary force to the working parts of a rear height adjuster to raise and lower the rear portion of the seat cushion is rotatably mounted to the front rotary shaft, a socket for providing a driving rotary force to the working parts of a front height adjuster to raise and lower the front portion of the seat cushion is mounted to the front rotary shaft integrally therewith, and an operation knob engageable with the driving rotary member or socket is axially movably mounted to the front rotary shaft between the socket and driving rotary member, so that by bringing the operation knob into engagement with the driving rotary member or socket and rotating the engaged operation knob the height of the rear or front portion of the seat cushion can be adjusted.
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