| 摘要 |
PURPOSE:To check rotation of a sun gear of a double pinion planetary gear mechanism by one-way clutch and to enable speed change for 5-stage forward by using a single pinion planetary gear mechanism and a double pinion planetary gear mechanism for transmission for an automobile. CONSTITUTION:Turning force is transmitted to a counter ring gear 43 for transmitting driving force to an output shaft 45 from a planetary pinion 17 of the first planetary gear mechanism 13 and the outer periphery side planetary pinion 22 of the second planetary gear mechanism 14. When a carrier 25 of the gear mechanism 13 is fixed and power is input from a sun gear 15 to operate the gear mechanism 13, it becomes backward stage. In case of inputting power from the sun gear 15, if a carrier 25 is rotated to operate the gear mechanism 14, it becomes the first speed forward. On the contrary, if power is input from a sun gear 19 and a carrier 4 is fixed, it becomes the second speed forward. In this case, if the sun gear 15 is fixed, it becomes the third speed forward. If power is input from the sun gear 19 and the carrier 24, it becomes the fourth speed forward, and if power is input from the carriers 24, 25, it becomes the fifth speed forward.
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