| 摘要 |
An adjustable steering column assembly for a vehicle comprises an upper shroud portion ( 8 ) which is adapted to receive a steering column ( 1, 2 ), a lower guide portion ( 7 ) which is adapted to support the shroud portion ( 8 ) and be secured to a mounting bracket ( 14 ) fixed relative to the chassis of the vehicle, a connecting pin ( 13 ) which projects through an elongate opening provided in the fixed bracket ( 14 ), an opening in the lower guide portion ( 7 ) and an elongate opening in the upper shroud portion ( 8 ), a toothed rail member ( 19 ) which is connected to the upper-shroud portion by an energy absorbing device ( 22 ), and an operating lever ( 17 ) which is operatively connected to the connecting pin ( 13 ). The pin ( 13 ) carries a toothed member ( 20 ) provided on an end of the connecting pin nearest the steering column ( 1,2 ) which engages with the toothed rail member when the pin ( 13 ) is drawn towards the fixed bracket by operation of the operating lever to a locked position to clamp the toothed rail member, the upper shroud and the guide portion onto the fixed mounting bracket. This permits the assembly to collapse under control of the energy absorbing member ( 22 ) in the event of a crash. |
