Electrical motor type power-steering system

Details Electrical motor type power-steering system Electrical motor type power-steering system

1985-07-29

1987-03-17

Love, John L.

Motor vehicles

Compensating devices

74388PS, B62D 120

Patent

active

046500197

ABSTRACT:
An inventive electrical motor-assisted power-steering system is compact while still providing adequate steering assist force. The system can also act as a manual steering system in the event of failure of an electrical motor. The system includes a steering gear with a shaft rotated manually via a steering shaft, a worm driven by the electrical motor operating in response to rotation of the steering shaft, and a worm wheel fixed to the steering gear shaft and meshing with the worm. The lead angle of the worm is selected to be larger than the friction angle between the worm and the worm wheel so that the worm wheel can drive the worm freely if the motor should fail.

REFERENCES:
patent: 3820415 (1974-06-01), Cass

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