| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the come-off of a key which restricts the rotation of a movable sheave relative to a shaft. <P>SOLUTION: An engine unit comprises a cylindrical collar 20 to be rotated together with a crank shaft, the key 39 arranged to be protruded from the outer peripheral face of the collar 20 in the radial direction, and the movable sheave 32 to be guided by a guide hole 32b formed in a boss 32a and slid in the axial direction of the crank shaft 19. The collar 20 has a key hole through which the other end 39c of the key 39 is inserted. At the other end 39c of the key 39, extending portions 39a, 39a are provided which are caught in the key hole to prevent the movement of the key 39 to the radial outside. <P>COPYRIGHT: (C)2009,JPO&INPIT |
