| 摘要 |
<p>PURPOSE:To prevent a large torsional deformation and to improve the durability by forming the inner circumferential face of a holding board secured to an armature and the outer circumferential face of an inside hab into non-circular shape then mounting a resilient member between them and providing an excitation coil for attracting the armature to a rotor. CONSTITUTION:A magnetic armature 8 secured with a holding board 10 is provided while facing against the sliding face 5a of a magnetic rotor 5 and an excitation coil 3 is provided in a stator housing 2. The inner circumference of the holding board 10 is formed into a round triangle while the outer circumference of a hub 12 is formed into a similar triangle slightly smaller than said round triangle. A rubber cushion 11 having a conforming profile is fitted in a gap and adhered to the holding board 10 and the tubular sections 10a, 12a of the hab 12. The effect of resiliency is improved by the non-circular shape of the holding board 10 and the hab 12, when the power is transmitted by conducting power to the electromagnetic coil 3, thereby the durability can be improved.</p> |
