| 摘要 |
<p>@ A pivotable steering column is adjustable to any of a number of angular positions defined by the teeth (106,110) of two elements (104,108) of a first locking device. A manual lever (102) can be raised to disable the first lock and allow selection of a different steering wheel inclination. The steering wheel (12) can be moved to its uppermost position by lowering the manual lever once. In this case, the first lock maintains engagement of the teeth (106,110) of the aforementioned two element, and a powerful spring (144) pulls the steering column upward to the uppermost position irrespective of the first lock. A second lock (204,210) then becomes wedged between the pivotable and stationary parts of the steering column, thus holding the former in the uppermost position. Lowering the manual lever (102) a second time disengages the second lock, allowing the steering column tilt down from the uppermost position. Thus, the steering column returns to an originally set driving position defined by locking engagement of the first lock.</p> |
