| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electromagnetic coupling device capable of improving responsiveness and preventing noises allowing easy replacement of a hub without increasing axial dimension and the number of part items. SOLUTION: This electromagnetic coupling device is provided with a yoke 1 formed of a magnetic substance and having a built-in exciting coil 2; a shaft 5 rotatably provided on the inner diameter side of the yoke 1; a synthetic resin sleeve 13 fixedly provided at the shaft 5 on the extension of the shaft 5; a hub 8 rotatably fitted to the sleeve 13; an armature 9 fitted to the hub 8 through a spring member 10 to form a magnetic path opposedly to the yoke 1; and a rotor 6 interposed between the yoke 1 and armature 9 and fixed to the shaft 1. An arm part 13a provided with elasticity by slits 13b on both sides and provided at its end with a protruding part 13c for regulating the position of the hub 8 is formed at the hub fitting part of the sleeve 13.</p> |
