| 摘要 |
<p>: TWO SPEED ACCESSORY DRIVE A two speed drive comprising: a driving member; a rotatable driven member coaxially positioned relative to the driving member; planetary gear means rotatable with the driving member and with the driven member for providing in one condition a non-reducing speed drive and for providing in a second condition a speed reducing drive therebetween, the gear means including a sun gear drivingly engaging the driving member, a ring gear mounted for rotation about said driving member, and a plurality of planetary gears interconnecting the sun gear and the ring gear, the driven member attached to and carried with the planetary gears; and electromagnetic clutch means, operable in a first mode for simultaneously driving the sun gear and the ring gear in the one condition to establish a non-reducing speed drive and operable in a second mode to rotationally lock the ring gear for driving the driven member through the sun gear and the planetary gears at a speed less than the speed of the driving member.</p> |
