| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the contact force of a contact section in a thrust force generation mechanism, allow to use of low-grade component material of the thrust force generation mechanism and to simplify heat treatment. <P>SOLUTION: In the thrust force generation mechanism 21 for axially pressing a main clutch for engaging/disengaging the connection between input and output shafts in an axial direction, a plurality of tapered holes 28, where radially inside width a backing plate 26 is wider than radially outside width, are provided in the circumferential direction on a surface that opposes a push plate 24 of the backing plate 26. A straight cylindrical roller 27 having a larger diameter than the narrower width of the tapered hole and a smaller diameter than the wider width is fitted into each tapered hole. At a side opposite to the backing plate of a push plate, a wavy surface 29, where a part opposite to each tapered hole of the backing plate forms a trough 29a, is provided while inclined being separated from the backing plate from the radially inner side to the outside of the push plate, and both the plates are arranged in contact with a roller fitting the trough of the waveform surface of the push plate into the tapered hole of the backing plate. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
