| 摘要 |
<p>The device has a control unit comprising a control lever movably mounted with respect to a base (40), and a reversing lever (44) articulated with respect to the base. A link arm (49) has a driving mechanism and control rods for driving the arm. The control lever is cooperated with the reversing lever for driving the lever (44) under the action of the mechanism and rods on a median part of a displacement path of the control lever. The lever (44) has rollers (64A, 64B) supported against one of stop surfaces (66A, 66B) of the lever (44) and forming immobilization stop.</p> |
