Electrically operated parking brake apparatus

Details Electrically operated parking brake apparatus Electrically operated parking brake apparatus

B - Operations, Transporting

60

T

B60T 13/74 (2006.01) B60T 13/02 (2006.01)

Patent

CA 2369235

An electrically operated parking brake apparatus that includes an electric motor and a screw mechanism. The screw mechanism includes a screw-threaded shaft adapted to be rotationally driven by the electric motor, and a nut member meshing with the screw-threaded shaft, the nut member being movable along the screw-threaded shaft by the rotation of the screw-threaded shaft. The parking brake apparatus also includes a transmission member connected to the nut member for transmitting a brake operating force to a wheel brake, and a rotation preventing unit for preventing the rotation of the screw-threaded shaft so as to hold the brake operating farce by firing the position of the nut member relative to the screw--threaded shaft. The rotation preventing unit in one embodiment is an electromagnetic brake for confining the screw--threaded shaft to a stationary portion of a vehicle body.

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