Transmission for performing reliable continuously-variable-speed operation through gear meshing, and vehicle-use continuously-variable transmission device using it

A continuously variable transmission for a vehicle, wherein said vehicle comprising a power generation means, a hydraulic means, a wheel driving means, a control means to control said vehicle, said continuously variable transmission comprising:

• a carrier means engaged with a turbine shaft, wherein said carrier means rotates by said turbine shaft;
• a plurality of sets of planetary gears supported by said carrier means, wherein said planetary gear sets freely rotate in one body and wherein the number of teeth of one of said planetary gear set is smaller than that of the other of said planetary gear set;
• a first output means meshed with said planetary gears having the large number of teeth at an outside thereof;
• a second output means meshed with said planetary gears having the large number of teeth at an inside thereof;
• and
• a transmission means meshed with said planetary gears having the small number of teeth at an inside thereof and rotating in the same direction as said carrier means.

A method for meshing gears for a continuously variable transmission in which a rotation power is transmitted with non-step from an input shaft to an output shaft, the method comprising the steps of:

• engaging a carrier means with said input shaft, wherein said carrier means rotates by a turbine shaft;
• providing a plurality of sets of planetary gears supported by said carrier means in order that said planetary gear sets freely rotate in one body, wherein the number of teeth of one of said planetary gear set is smaller than that of the other of said planetary gear set;
• providing a first output means meshed with said planetary gears having the large number of teeth at an outside thereof;
• providing a second output means meshed with said planetary gears having the large number of teeth at an inside thereof;
• and
• providing a transmission means meshed with said planetary gears having the small number of teeth at an inside thereof and rotating in the same direction as said carrier means.