Kabushiki Kaisha F. C. C.

Masayuki Nonaka

Han Hiong Chen

Yoshihiko Ozawa

Katsu Yoshimoto

Yuki Kobayashi

Go Ando

Hideyuki Oishi

Hideki Nagasaka

A clutch device includes a clutch center including center-side fitting teeth, and a pressure plate including pressure-side fitting teeth. When a center-side assist cam surface and a pressure-side assist cam surface contact each other, an end of each of the pressure-side fitting teeth in a first direction is located ahead, in the first direction, of an end of a corresponding one of the center-side fitting teeth in a second direction, and at least portions of some of the pressure-side fitting teeth overlap with the center-side fitting teeth when seen in radial directions of the output shaft, and at least portions of others of the pressure-side fitting teeth do not overlap with the center-side fitting teeth when seen in radial directions of the output shaft.

Clutch device and motorcycle

In a power transmission apparatus, an auxiliary clutch plate different in diameter from driving and driven clutch plates located in a clutch housing. When the driving and driven clutch plates are pressed against each other, the auxiliary clutch plate is pressed to enable transmission of a driving force of an engine to a driving wheel. When a pressing force exerted on the driving and driven clutch plates is released, a pressing force exerted on the auxiliary clutch plate is released to cut off transmission of the driving force of the engine to the driving wheel.

Power transmission apparatus

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.

Power transmitting apparatus

Growing community of inventors

Hamamtsu, Japan

Masayuki Nonaka