Power transmitting apparatus

摘要

A power transmitting apparatus comprising a clutch housing, an input member connected to an engine and mounted thereon, driving-side clutch discs, a clutch member connected to an output member, driven-side clutch discs arranged between the driving-side clutch discs, a pressure member for press-contacting the driving-side clutch discs and the driven-side clutch discs together and for releasing the press-contacting force on them, and a starter, such as a kick-starter, able to apply a rotational force to the output member to start the engine, the power transmitting apparatus adapted to transmit or cut off driving power of the engine inputted to the input member to or from the output member. The power transmitting apparatus can comprise a press-contact assisting cam of an inverse-driving side for increasing the press-contacting force on the driving-side clutch discs and the driven-side clutch discs when rotational force is applied to the output member by the kick starter.

主权项

1. A power transmitting apparatus comprising:
an input member connected to an engine; a clutch housing rotatable together with the input member; a plurality of driving-side clutch discs mounted on the clutch housing; an output member; a clutch member connected to the output member; a plurality of driven-side clutch discs arranged between the driving-side clutch discs alternately therewith; a pressure member configured to force the driving-side clutch discs and the driven-side clutch discs to be press-contacted with each other and configured to release a press-contacting force acting on them in accordance with approach or separation of the pressure member relative to the clutch member; and a kick-starter means configured to apply a rotational force to the output member to start the engine by transmitting the rotational force to the engine via the clutch member, the power transmitting apparatus being configured to transmit a driving power of the engine inputted to the input member to the output member by press-contacting the driving-side clutch discs with the driven-side clutch discs or cut off the driving power of the engine inputted to the input member from the output member by releasing the press-contacting force acting on them; wherein the power transmitting apparatus further comprises a press-contact assisting cam of an inverse-driving side, the press-contact assisting cam configured to increase the press-contacting force acting on the driving-side clutch discs and the driven-side clutch discs by mechanically translating the rotational force applied to the output member by the kick starter means into the press-contacting force in a direction parallel to an axis of rotation of the output member.