| 摘要 |
<p>A device (100) for selecting and displacing actuation elements (26,30,35,41) of a gear-box (4) for motor-vehicles comprising a plurality of forward gears (I, II, III, IV, V) and a reverse gear (RM) each associated to a respective actuation element (26,30,35,41), the device (100) comprising:
- a selection mask (145) having a pair of fingers (146,147)
- a first engagement hub (56) inserted between said fingers (146,147) and having a radial relief (58) arranged to engage with said actuation elements (26,30,35,41)
- a control shaft (160) rotatably connected (57,163) to said first engagement hub (56), and
- a second engagement hub (101) fitted on said control shaft (160) and comprising a finger (105) arranged to engage in the actuation element (26;27) of a forward gear (II) only when said first engagement hub (56) is translated to engage said radial relief (58) in the actuation element (41;44) of said reverse gear (RM).
The second engagement hub (101) comprises disengageable coupling means (123) arranged to sequentially enable and disable a rigid connection in rotation between said finger (105) of said second engagement hub and said control shaft (160).</p> |
