Electromagnetic clutch with an adjusting means for adjusting a s

Details Electromagnetic clutch with an adjusting means for adjusting a s Electromagnetic clutch with an adjusting means for adjusting a s

1989-10-24

1992-01-14

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

1921061, F16D 2710, F16D 2714

Patent

active

050802135

ABSTRACT:
In an electromagnetic clutch comprising a plurality of leaf springs for supporting an armature plate (18) to a shaft (14) so that the armature plate (18) faces a pulley (16) in an axial direction with a gap left therebetween, each of the leaf springs has a substantial length which is adjusted in response to a size of the gap. This results in changing of a spring constant of each of the leaf springs. When the armature plate is moved towards the pulley, the size of the gap becomes gradually small. Simultaneously, the armature plate is subjected to a suction force which acceleratingly increases in response to decreasing of the size of the gap. However, it is possible to reduce a noise which is generated when the armature plate is attracted to the pulley. This is because the armature plate comes into soft collision with the pulley.

REFERENCES:
patent: 3007561 (1961-11-01), Harting
patent: 4227600 (1980-10-01), Shirai
patent: 4689953 (1987-09-01), Wang
patent: 4694945 (1987-09-01), Koitabashi
patent: 4808870 (1989-02-01), Gonda

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