| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driving force transmission device in which adverse effect due to drag torque can be suppressed, and responsiveness of clutch operation in a first clutch can be enhanced. <P>SOLUTION: A driving force transmission device 1 includes a cam mechanism 15 for converting turning force from a housing 12 into cam thrust force P by actuation of clutch operation of a pilot clutch 10. The cam mechanism 15 has a pilot cam 150 to be rotated by receiving turning force from the housing 12, a main cam 151 for generating the cam thrust force P between it and the pilot cam 150 to output it to the main clutch 8, and a rolling element 152 interposed between the main cam 151 and the pilot cam 150. The pilot cam 150 is disposed at a rotation direction neutral position at its initial state by receiving spring force in one rotation direction by a first spring 30 and spring force in another rotation direction by a second spring 31. <P>COPYRIGHT: (C)2013,JPO&INPIT |
