| 摘要 |
This invention touches the planetary gear type transmission which is comprised of a pair of single planetary gear rows are combined, and a carrier of one side and a ring gear of the other side are integrated, and a housing of a transmission is formed with the help of two carriers which operate as an input side and an output side, respectively. The transmission work is implemented by controlling the each sun gear which is rotatably installed at the fixed center shaft to engage or disengage with said center shaft or by controlling an integration and a disintegration of two sun gears. This invention gives the planetary gear type transmission a compact size and a light weight because the carrier plays a role for the housing. The center shaft can be engaged and disengaged with the body of the vehicle. One can choose any mode in an acceleration mode, a deceleration mode and a direct connection mode, without using the clutch and under any mode the planetary gear type transmission transmits the driving force in both ways.
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