FRICTION TYPE CONTINUOUSLY VALIABLE TRANSMISSION

PURPOSE:To reduce resistance caused by gear driving to improve transmission efficiency by exposing the central boss of a carrier outside a case to form a rotation input section, end removably supporting the one side end of a main shaft so as to rotate relatively to a central boss. CONSTITUTION:Since a boss 5c of a carrier 5 serving as a power input section B is exposed outside a case 1, a shaft on a driving side can be directly axially transmitted to the exposed boss part 5c without a gear interlocking mechanism or the like. When a main shaft 3 rotating in a body with a driven rotating element protrusively passes through a case 1 at the inserting end of a carrier 5 end the end on its opposite side to make its axial transmission possible, gear interlocking action required for input or output into or from a friction type continuously valiable transmission becomes unnecessary, and mechanical loss can therefore be reduced by an amount for the above gear interlocking action. Thus since the carrier boss 5c and the main shaft 3, namely an input shaft and an output shaft, have the same shaft center, this device can be utilized as a power unit for taking out the output shaft after speed change on the center of the output shaft of an engine E.