| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a practical electromagnetic clutch by providing a first rotating member, having a pulley part with belt grooves formed, with a rotor part having an outer diameter dimension larger than the pulley diameter of the pulley part and having a ring groove formed being opened to the pulley part side. SOLUTION: A first rotating member 3 has a pulley part 4 provided with a cylindrical part 4b with the outer peripheral surface having pulley grooves 4a formed of poly-V-grooves, and a conical connecting part 4c formed integrally with the cylindrical part 4b. An outer ring of a bearing 2 is fixed to the inside of the cylindrical part 4b, and a rotor part 5 is integrally screw-fixed to the outermost diameter part of the connecting part 4c of the pulley part 4. A ring groove 5a opened to the pulley part 4 side is formed at the rotor part 5. Even when the first rotating member 3 is rotated at high speed, and large vibration acts upon an electromagnetic clutch, a lightweight armature 9 can be held statically in a position, spaced from the friction face of the first rotating member 3, by an elastic member, so that the rupture of the elastic member, the generation of unpleasant noise, and the like can be prevented.</p> |
