Electric park brake actuator (electric caliper)

摘要

The electric park brake of the present invention includes an electric caliper motor assembly. The electric caliper motor assembly includes a motor, which is operably coupled to a shaft. The motor and shaft are surrounded by a housing. A friction wheel is disposed axially and operably connected to the shaft within the housing. A park brake motor is disposed within a second housing. The second housing is connected to the first housing and positioned laterally in relation to the shaft. An acme screw is operably coupled to the park brake motor wherein the acme screw interacts with an acme nut. A lever is in juxtaposition to the acme nut and friction wheel. The lever is angularly displaced by the acme screw interacting with the acme nut to frictionally interact with the friction wheel when the park brake motor is activated. This provides a park brake feature and prevents movement of the shaft.