| 摘要 |
PURPOSE:To provide a planetary gear type transmission which have a plural number of compound planetary gears integrally composed of a large diameter pinion gear and a small diameter pinion gear and can be assembled easily and quickly without losing strength and durability of the small diameter pinion gear and without making the device large. CONSTITUTION:A transmission is provided with a plural number of compound planetary gears 24a, 24b integrally composed of a large diameter pinion gear 22 and a small diameter pinion gear 26, and the plural large diameter pinion gear 22 are engaged with a common sun gear 18. On the other hand, a ratio of the number of teeth ZP1/ZP2 between number of teeth ZP1 of the large diameter pinion gear 22 and the number of teeth ZP2 of the small diameter pinion gear 26 is set to an integer larger than two, in a planetary gear type transmission where a plural number of the small diameter pinion gear 26 are engaged with a mutually common position fixed ring gear 30 and rotation inputted into the sun gear 18 is reduced and outputted from a carryer. |
