| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the dragging torque simultaneously with lowering of rotating resistance (frictional resistance) of a cam mechanism. <P>SOLUTION: The cam mechanism 23 for connecting a main friction clutch in operating an electromagnetic clutch mechanism connecting a pilot friction clutch 26, comprises a relatively rotatable pilot cam body 32, a main cam body 31 and a stopper body 33, and takes a state that the main friction clutch is connected by thrust in the rotational center line direction generated on the main cam body 31 in accordance with the torque generated on the pilot cam body 32 through the pilot friction clutch 26 in accompany with the relative rotation of a first rotating member and a second rotating member, when the electromagnetic clutch mechanism is operated, and a state that the generation of the thrust in the rotational center line direction on the main cam body 31 is inhibited by allowing the stopper body 33 to resist against the torque generated on the pilot cam body 32 by the energizing force in the rotating direction generated by a torsion spring 34, even when the electromagnetic clutch mechanism is not operated. <P>COPYRIGHT: (C)2004,JPO</p> |
