| 摘要 |
A electromagnetic clutch (1) comprises a hub (10) rigidly fitted on a drive shaft (2) and having a flange portion (11), a rotor (20) which is rotatable about the drive shaft (2), a magnetic coil (21) arranged in the rotor (20), an armature plate (30) which is magnetically attracted into abutment with the rotor (20) upon energisation of the magnetic coil (21), and a plurality of spring members (40) interposed between the hub flange portion (11) and the armature plate (30) along a circumference of the rotor (20), for connection between the flange portion (11) and the armature plate (30). The armature plate (30) comprises a first annular disc (30a axially opposed to the rotor (20) with a predetermined axial gap therebetween, a second annular disc (30b) connected to the first annular disc (30a) in a manner axially opposed thereto with a predetermined space (30x) formed therebetween, and at least one elastic body (30c) held in the predetermined space (30x) between the first annular disc (30a) and the second annular disc (30b). <IMAGE> <IMAGE>
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