| 摘要 |
The mounting device comprises an upper frame (11) capable of supporting a vehicle seat, and mounted for fore-and-aft movement on a lower frame (12).
<??>An intermediate frame (13) is adjustably connected to the upper frame (11) by a first actuator comprising a rack and pawl combination (23a, b, 24a, b) and is connected to the lower frame (12) by springs (21) and by a second actuator operable to lock frames (12) and (13) rigidly together. The first and second actuators are connected to a common operating member (27) which ensures that at least two of the frames (11, 12) and (13) are locked together at any time.
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