Patent ID: 6276506
Filing Date: 2001-08-21
Classification: F16D

Abstract:
An electromagnetic clutch comprising:a rotatable shaft;a field coil having an energizing coil mounted on the shaft;an output-side rotary member formed with a through hole which is non-rotatably mounted on the shaft on a side opposing to the filed coil;an input-side rotary member which is rotatably mounted on the shaft;a drive transmitting member which is rotatable together with the input-side rotary member for transmitting a drive power from the input-side rotary member to the output-side rotary member; andan elastic member for allowing the drive transmitting member to shift from the input-side rotary member side to the output-side rotary member side when the energizing coil is energized;a cross section of the shaft and a cross section of the through hole of the output-side rotary member at respective mutually contacting regions are so configured that the shaft is capable of moving in and out of the through hole of the output-side rotary member without substantially deforming mutually contacting surfaces between the shaft and the output-side rotary member.