| 摘要 |
2095610 9209467 PCTABS00013 The parking brake system (10) includes a spring operated actuator (30) which includes a screw (37) having thereabout a nut (38) affixed to a laterally movable cap (32) biased by springs (34, 35) within the actuator (30). The screw (37) is connected with a gear mechanism (40) that can rotate a flywheel (60) connected selectively with an electric motor (20). The screw (37) of the spring operated actuator (30) is connected with flexible drive mechanisms (50) that are connected with brakes (18, 19) of the vehicle. The spring operated actuator (30) is in a compressed mode when the brakes (18, 19) have not been applied for parking. When the vehicle operator activates the parking brake system (10), spring expansion causes the movable cap (32) and nut (38) to move laterally which causes the screw (37) and gear mechanism (40) to rotate so that the flywheel (60) is also rotated. As the springs (34, 35) expand, the kinetic energy stored within the flywheel (60) is fed back into the parking brake system (10) to effect full application of the brakes (18, 19).
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