Electrically assisted parking brake system on private car - tensions and relaxes brake cables by alternative electric and manual transmission actuators with no inter-activity

摘要

The brakes (1) on both rear wheels (2) are operated by Bowden cables (3a,3b) from a combined positioning and transmission unit (4). Application is normally by an electric positioner (30) receiving commands (6a) from a control unit (5). In the event of electrical failure, the transmission (28) can be actuated by a longer cable (9) from an auxiliary actuator (8) near the driving seat. There is no interaction between the movements originated by the motor (30) and cable (9). ADVANTATGE - Reliability is enhanced by decoupling of manual and power-assisted mechanisms so that unused alternative undergoes no movement during any application.