Planetary gear transmission systems or components – Differential planetary gearing – Worm drive on input shaft
Patent
1999-09-28
2000-07-25
Ta, Khoi Q.
Planetary gear transmission systems or components
Differential planetary gearing
Worm drive on input shaft
475226, 74425, F16H 4806
Patent
active
060931264
ABSTRACT:
Transmission device utilizes a self-locking enveloping worm (1) and enveloping type worm gear (2) in combination with differentials. The worm gear has less than 24 teeth and enveloping angle one revolution of worm thread more than 15 degrees. Mechanical motion from the input of one member (4) of the differential is transmitted to the output (5) of another member of the differential. Control member of the differential connected to the worm gear. Unlocking motion of worm gear (2) controlling by rotation of enveloping worm, connected to auxiliary motor (17). The transmission device for transmitting an oscillating input (4) to a single directional output (5) incorporates some of the worm and worm gear combinations with spider or bevel differentials. The usage of this invention not only transmits the rotation utilizing an oscillating input but also transmits the torque for the conventional power transmission. For example, this system can be utilized as part of a vehicle transmission or a gearbox with changeable ratio.
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