| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive system capable of restraining invasion of grease into a friction surface of an electromagnetic clutch mechanism. <P>SOLUTION: The drive system 10 comprises a housing 11, a worm wheel 32 which has a projection 32b and is rotatably supported by the housing, an armature 41 which has a connecting hole 41a fitted with the projection and is rotatably connected with the worm wheel, the electromagnetic clutch mechanism 14 having a rotor 42 and coil 46 which are oppositely positioned to the armature and are rotatably supported by the housing, and a circular seal member 40. Circular wheel-side projected sections 32d and 32e projecting to an opposing surface of the seal member are formed on the worm wheel. Circular seal member-side projecting sections 40b and 40c projecting to an opposing surface of the worm wheel so as to alternate with the wheel-side projecting sections are formed on the seal member so that they are overlapped with the worm wheel in a projecting direction of the wheel-side projecting section. <P>COPYRIGHT: (C)2007,JPO&INPIT |
