Electrically actuatable disc brake

Details Electrically actuatable disc brake Electrically actuatable disc brake

2005-04-19

2005-04-19

Williams, Thomas (Department: 3683)

Brakes

Wheel

Axially movable brake element or housing therefor

C188S156000

Reexamination Certificate

active

06880680

ABSTRACT:
In an electrically actuatable disc brake, rotation of a rotor of an electric motor is reduced by means of a differential reduction mechanism. A ball ramp mechanism is operated to press brake pads against a disc rotor to generate a braking force. In the differential reduction mechanism, when an eccentric shaft of the rotor is subjected to eccentric rotation, an external gear member having external input teeth meshing with a fixed ring gear performs an orbital motion while rotating on a center axis of the gear member, whereby a set of external output teeth of the gear member performs an orbital motion while rotating on the center axis to operate a ring gear integrally formed with a rotary disc of the ball ramp mechanism. A high reduction ratio can be easily obtained. The differential reduction mechanism can be easily formed and imparted with sufficient strength.

REFERENCES:
patent: 1563945 (1925-12-01), Apple
patent: 2881619 (1959-04-01), Fox et al.
patent: 03045462 (1991-02-01), None
patent: 0060255 (2000-10-01), None

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