ELECTRIC BRAKE ACTUATOR FOR VEHICLES

摘要

An electric brake actuator includes first and second electric motors and an actuator output, a first cycloidal speed reducer having a first reducer input rotatable about a first reducer axis and operatively connected to the first motor output gear to receive a first driving force, and a first reducer output rotatable about the first reducer axis and operatively connected to the actuator output to transfer the first driving force to the actuator output, and a second cycloidal speed reducer having a second reducer input rotatable about a second reducer axis and operatively connected to the second motor output gear to receive a second driving force and a second reducer output rotatable about the second reducer axis and operatively connected to the actuator output to transfer the second driving force to the actuator output.

主权项

1. An electric brake actuator operatively connectable to a vehicle brake to operate the vehicle brake, the electric brake actuator comprising:
a first electric motor having a first motor output shaft rotated by operation of the first electric motor to produce a first driving force and a first motor output gear fixed to the first motor output shaft; a second electric motor having a second motor output shaft rotated by operation of the second electric motor to produce a second driving force and a second motor output gear fixed to the second motor output shaft; an actuator output rotatable about an output axis and operatively connectable to the vehicle brake to operate the vehicle brake; and a differential operatively connected to both the first motor output gear and the second motor output gear and the actuator output to transfer the first and second driving forces to the actuator output by way of the differential, wherein an effective gear ratio between the first motor output gear and the actuator output is different from an effective gear ratio between the second motor output gear and the actuator output.