| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a clutch which can reduce the number of energization members. <P>SOLUTION: The clutch 50 operates to disconnect a worm shaft from a rotating shaft at the non-drive of the rotating shaft, and on the other hand, to connect the rotating shaft and the worm shaft at the drive from the side of the rotating shaft. The clutch 50 comprises: a cam mechanism which guides a roller member 52 to an engaged position from a non-engaged position by a cam groove 55d accompanied by the relative rotation of a guide member 55 and a drive-side rotating body 51; and a holding mechanism which holds the roller member 52 at the engaged position by the guide member 55 which is moved to the outside of the radial direction by a centrifugal force which is generated by an effect that a return spring 53 rotates accompanied by the drive-side rotating body 51. Then, the return spring 53 constituting the clutch 50 energizes the roller member 52 so that the cam mechanism and the holding mechanism are returned to initial states. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
