Electromagnetic clutch

192 clutches and power-stop control – Clutches – Operators

Patent

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Details

192109R, F16D 2710

Patent

active

059097876

ABSTRACT:
Disclosed is an electromagnetic clutch comprising a field member with an exciting coil member disposed therein; a shaft extending through the field member and the exciting coil member; a rotor member fixedly disposed on the shaft at a position opposing to the filed member; a drive mechanism rotatably provided on the shaft; a contact member provided on the drive mechanism on the side facing the rotor member; an elastic member disposed on the drive mechanism for biasing the contact member to the drive mechanism. The contact member is positioned to form a clearance of a first dimension G1 along the shaft between the surfaces of the contact member and the rotor member and the first dimension G1 is set to be smaller than a limit dimension G3. A deformation of the elastic member by the limit dimension along the axial direction results in the elastic limit. The electromagnetic clutch has a restricting member provided on the drive mechanism for restricting a displacement of the contact member along the axial direction of the shaft to be less than a second dimension G2. The dimension G2 is set within a range between the first dimension G1 and the limit dimension G3.

REFERENCES:
patent: 2808917 (1957-10-01), Harter
patent: 2966977 (1961-01-01), Johnson
patent: 2970681 (1961-02-01), Timmcke
patent: 3007561 (1961-11-01), Harting
patent: 3429409 (1969-02-01), Leblanc
patent: 3438471 (1969-04-01), Wrensch
patent: 3789966 (1974-02-01), Miller
patent: 4704554 (1987-11-01), Nishimura
patent: 4984668 (1991-01-01), Onishi et al.
patent: 5031745 (1991-07-01), Nishimura
patent: 5609232 (1997-03-01), Brownfield et al.
patent: 5762173 (1998-06-01), Nishimura

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