Transmission unit for hybrid vehicle

摘要

A transmission unit for a hybrid vehicle has a single-shaft structure wherein the input from an electromagnetic clutch to a motor and a CVT is effected through a single input shaft. The input shaft is supported by first and second bearing members disposed on both sides of the CVT, and a third bearing member which is provided between the input shaft and a first partition wall separating a clutch chamber and a motor chamber. Each of the first and second bearing members is fit in a hole of the housing in a manner to prevent radial motion of the input shaft, whereas the third bearing member is surrounded by a clearance for allowing radial motion of the input shaft relative to the housing. In the clearance, there is provided an O-ring for preventing passage of foreign objects from the clutch chamber into the motor chamber.