| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a drive device particularly for a hatch of a vehicle which can be actuated manually with little force and which does not require a separate drive. <P>SOLUTION: A switching element provided with a first concentrically circulating ramp rotatably drivable by a rotary drive 22, and directed in an axial direction is arranged; the first ramp comes into contact with a second ramp of a coupling element facing it in the axial direction and concentrically circulating; the coupling element can be axially shifted by facing the switching element against spring force by relative rotation of the switching element and the coupling element; the coupling element is unrotatable until reaching certain rotating torque; the coupling element is provided with rotary motion by the switching element after exceeding the rotating torque; and the coupling element has a coupling part region in which the coupling element can unrotatably engaging with a coupling disc 40 unrotatably coupled to a threaded spindle 8. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
