| 摘要 |
A motor driven door drive mechanism is provided having a belt transmission including a flat belt or a round belt which passes around two rotating guide wheels of which at least one is driven to take along the belt. The driven wheel is embodied by a gear and another gear is provided which loosely meshes with the drive gear, partly pressing the belt into the gaps between the teeth thereof. This arrangement offers a sound compromise between the amount of drive force that can be transmitted, and the manufacturing cost and results in low noise level in operation.
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