Abstract: An electrically powered actuator mechanism for operating a vehicle parking brake including a reversible electrical motor having output gearing driving a sector gear. A wrapped spring clutch drivingly connects the sector gear to an intermediate operator cable wind up wheel. The intermediate cable is connected to the brake cable to set the brakes when the operator cable is wound up by energization of the motor in one direction, with a load sensor turning off the motor when a predetermined tension load is reached. Locking motor gearing holds the brake in the set condition. Reversal of the motor unwinds the cable to release the parking brake. A self adjusting feature is provided by a pretensioned clock spring creating a torsional bias on the wind up wheel tending to maintain a predetermined tension in the brake cable. A spring clutch is released by engagement of a release arm to allow the clock spring to adjust the wind up wheel.

Abstract: A manual override mechanism for an electric brake includes a flexible cable having an elongate outer conduit and an elongate inner core extending within the conduit, a conduit end fitting secured to an end of the outer conduit, a housing located within the conduit end fitting and rotatable therein and a core end fitting secured to an end of the inner core. The core end fitting is located within the housing and is longitudinally movable from a first position to a second position such that the end of the inner core moves toward the end of the outer conduit. Preferably, a spring element biases the core end fitting into the second position. Movement from the first position to the second position engages the core with a connecting element such as a helical gear to operably connect the core to the electric parking brake for manual operation thereof.

Abstract: A manual override mechanism for an electric brake includes a flexible cable having an elongate outer conduit and an elongate inner core extending within the conduit, a conduit end fitting secured to an end of the outer conduit, a housing located within the conduit end fitting and rotatable therein and a core end fitting secured to an end of the inner core. The core end fitting is located within the housing and is longitudinally movable from a first position to a second position such that the end of the inner core moves toward the end of the outer conduit. Preferably, a spring element biases the core end fitting into the second position. Movement from the first position to the second position engages the core with a connecting element such as a helical gear to operably connect the core to the electric parking brake for manual operation thereof.