| 摘要 |
Electromagnetic clutch and pulley assembly comprising an electromagnetic coi l (28) disposed adjacent to a pulley (14), with a clutch assembly (16) constructed to couple the pulley to the shaft (12) when the electromagnetic coil (28) is energized. The clutch includes a hub (32) coupled to the shaft (12), an armature disc (60), a torsion transmittin g structure (50) and an axially compressible structure (90). The torsion transmitting structure (50) transmits torque from the armature disc (60) to the hub (32). The axially compressible structure (90) biases the armature disc (60) away from the pulley (14), and is axially compressed on energization of the coil (28) to permit the armature disc (60) to move into engagement with the pulley (14). The axially compressible structure (90) is substantially isolated from the torsional loads between the hub (32) and the armature disc (60).
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