Electrically actuated disc brake

Details Electrically actuated disc brake Electrically actuated disc brake

1987-10-07

1989-07-25

Kashnikow, Andres

Brakes

Wheel

Axially movable brake element or housing therefor

188 727, 188156, 74805, F16D 5516

Patent

active

048504572

ABSTRACT:
The electrically actuated disc brake (10) comprises a caliper (12) having a bore (16) receiving therein an actuating mechanism (90), and an electric motor (40) attached to the caliper housing (12). The actuating mechanism (90) comprises a planetary gear mechanism (50) which includes a sun gear (52), planetary gears (54), and a pair of ring gears (70, 80). An actuator sleeve (68) is disposed about the ring gears (70, 80) and contains a helical groove (69) disposed opposite a complementary-shaped helical groove (89) in a rotatable ring gear (80). The helical grooves (69, 89) receive therebetween a bearing mechanism (85) biased by a spring (87) toward a fixed stop (86) located within the helical grooves (69, 89). Operation of the electric motor (40) effects rotation of the rotatable ring gear (80) and axial displacement of the actuator sleeve (68) into engagement with a thrust pad (96) located adjacent one of the friction elements (18) so that the caliper (12), by reaction, displaces the other friction element (20) into engagement with the rotor (22).

REFERENCES:
patent: 3514136 (1970-05-01), Kennicott
patent: 3842949 (1974-10-01), Newstead
patent: 4603594 (1986-08-01), Grimm
patent: 4658939 (1987-04-01), Kircher et al.

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