| 摘要 |
An aircraft passenger door is opened and closed by at least one door operating mechanism including a drive motor and a transmission unit that is rotatably arranged on the motor shaft and engages a toothed rack. The transmission unit includes first and second actuator gears respectively connected by first and second transmission shafts to first and second driven gears that are driven, preferably in opposite rotation directions, by a motor gear on the motor shaft. Thereby, the motor drives the actuator gears in opposite directions. The actuator gears engage the rack from opposite sides, with the rack extending between the actuator gears. Preferably, two racks are provided along the two side edges of the doorway opening, and four operating mechanisms are arranged in the door (two at each side edge thereof).
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