Electronic parking brake actuator

摘要

An electrically actuated parking brake system includes a control switch in a vehicles cabin, an intelligent controller, a linear actuator, and cables connected between the linear actuator and mechanical parking brakes. The intelligent controller receives signals from the control switch and from one or more electrical device in the vehicle. If any of the signals from the vehicle indicate that the vehicle is in motion, the parking brakes are not actuated. The electrically actuated parking brake system may further include a remote control, and logic in the intelligent controller will allow the parking brakes to be engaged when the vehicle is in motion, remote control is enabled, and the remote control is actuated by a user. The parking brakes may be either drum brakes or disk brakes.

主权项

1. An electrically actuated parking brake system comprising:
a switch; an intelligent controller electrically connected to the switch; electrical connections between at least one vehicle device of the vehicle and the intelligent controller, the intelligent controller receiving at least one signal from the at least one vehicle device indicating whether the parking brake should be actuated; a linear actuator electrically connected to the intelligent controller the linear actuator comprising:
a housing;a linear motor residing in the housing;a body of the linear motor spaced away from interior walls of the housing by a gap (G); anda sliding shaft extending from a first end of the linear motor; a cable connecting the sliding shaft of the linear motor to a vehicle parking brake;
a second end of the linear motor opposite to the first end, the second end connected to the housing by a pin extending through the linear motor and into opposite sides of the housing; andopposing guides attached to the sliding shaft, the guides cooperating with a non-round interior of the housing to prevent the sliding shaft from rotating.