초록 ▼

The invention relates to gears and gear trains, and more particularly to epicyclic gear trains of low cost and improved efficiency. A novel driving means in the form of an eccentric crank/counterweight is provided, and the structural relationships between the several gears are such that the need for

The invention relates to gears and gear trains, and more particularly to epicyclic gear trains of low cost and improved efficiency. A novel driving means in the form of an eccentric crank/counterweight is provided, and the structural relationships between the several gears are such that the need for conventional bearings is completely obviated. The gear train is of modular construction, being split diametrically into matched halves. Thus, the gear ratio of the overall gear box may be quickly and easily varied by merely replacing one of the matched halves with another. A novel tooth construction for use with epicyclic gearing is also disclosed, wherein a large pressure angle allows circular arc profile involute teeth to be utilized.

대표청구항 ▼

An epicyclic gear train, comprising: input and output means; first and second orbiting gears; first and second eccentric members coupled to said input for orbitably driving said orbiting gears and counterbalancing imbalance forces caused by said orbiting gears; first and second outer gears meshingly

An epicyclic gear train, comprising: input and output means; first and second orbiting gears; first and second eccentric members coupled to said input for orbitably driving said orbiting gears and counterbalancing imbalance forces caused by said orbiting gears; first and second outer gears meshingly engaged with said first and second orbiting gears, respectively; means for selectively braking either of said outer gears; and bearing means for supporting said orbiting gears for orbiting and rotating motion, said bearing means including first races formed in confronting axial surfaces of said first orbiting gear and said first eccentric member as well as said second orbiting gear and said second eccentric member, respectively, and rollers guided in said first races.