| 摘要 |
A power drive moves a movable closure between an open position and a closed position with respect to a portal defining a passage through a barrier. The power drive can include an elongated drive member connected to the movable closure and a ball nut drive assembly for selectively moving the drive member longitudinally to position the movable closure between the open position and the closed position with respect to the passage through the barrier. The barrier can define at least a portion of a stationary structure or a vehicle, where the passage allows access within the structure or the vehicle. The movable closure can include a sliding door, hatch, window, or roof panel. The elongated drive member can be a flexible, wire wound push/pull cable having at least one wire member helically wound in uniformly spaced turns around a core of the push/pull cable to form a screw member capable of being driven by operable engagement with the recirculating ball nut drive assembly.
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