Centrifugal clutch for power door locks

Details Centrifugal clutch for power door locks Centrifugal clutch for power door locks

1994-12-02

1999-01-26

Marmor, Charles A.

192 clutches and power-stop control

Clutches

Operators

192 843, 70276, 292144, 292DIG23, F16D 2308

Patent

active

058629033

ABSTRACT:
A centrifugal clutch for use with a power door lock actuator. The centrifugal clutch includes an independently rotatable pinion cup having an integral pinion gear which meshes with a jack screw, and a driver rotatably secured to an output shaft of a drive motor. The driver has at least one radially outwardly opening recess formed therein with at least one slider slidably retained within the recess. The slider is biased in a radially inward direction by magnetic lines of force which are provided by a permanent magnet mounted within the driver. Alternatively, a number of sliders can be formed of magnetic material such that the magnetic sliders are mutually attracted to one another in a radially inward direction. A centrifugal force is generated when the driver is rotated. The centrifugal force overcomes the magnetic attractive force to throw the sliders radially outwardly into positive driving engagement with the pinion cup. When the driver is no longer rotatably driven, the centrifugal force is eliminated and the magnetic attractive force then urges the sliders radially inwardly to break the positive driving engagement with the pinion cup.

REFERENCES:
patent: 4520914 (1985-06-01), Kagiyama et al.
patent: 4625848 (1986-12-01), Meyers et al.
patent: 4736829 (1988-04-01), Noel
patent: 4821521 (1989-04-01), Schuler
patent: 4850466 (1989-07-01), Rogakos et al.
patent: 4926986 (1990-05-01), Noel
patent: 5056633 (1991-10-01), Noel
patent: 5076623 (1991-12-01), Richards
patent: 5205386 (1993-04-01), Goodman et al.
patent: 5441315 (1995-08-01), Kleefeldt et al.

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