| 摘要 |
An improvement (17) for a linear actuator mechanism (1) includes a brake mechanism (19) acting on an intermediate gear (39) of a gear mechanism (21) of the actuator. The brake mechanism includes a spring washer (61) installed on a gear shaft (53) and thrust washers (59) mounted on the gear shaft on each side of the gear. A constant force is exerted on the gear by the brake mechanism to eliminate "back drive" forces operating on a lead screw (5) of the actuator when its motor (7) is de-energized.
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