MOTIVE-POWER TRANSMISSION DEVICE FOR SUPERCHARGER

摘要

A planetary gear device for a motorcycle transmits a power of a reciprocating combustion engine to a supercharger. The supercharger pressurizes intake air for the combustion engine. The supercharger includes a supercharger rotation shaft and an impeller supported by the supercharger rotation shaft. A planetary gear and an internal gear of the planetary gear device are each composed of a helical gear, and the planetary gear and the internal gear form a helical gear pair. The planetary gear device includes a pressing unit that applies a pressing force in an axial direction to the planetary gear.

主权项

1. A power transmission device for a supercharger, the power transmission device transmitting a power of a reciprocating combustion engine to a supercharger that pressurizes intake air for the combustion engine, wherein
power from the combustion engine is transmitted to the supercharger via a helical gear pair composed of an engine-side helical gear and a supercharger-side helical gear, the supercharger-side helical gear is supported to be movable in an axial direction of a rotation shaft of the supercharger, a pressing unit is provided which applies a pressing force in the axial direction to the supercharger-side helical gear, the engine-side helical gear is a ring gear included in a planetary gear mechanism, the supercharger-side helical gear is a planetary gear included in the planetary gear mechanism, the planetary gear transmits the power to the rotation shaft to which an impeller of the supercharger is fixed, and the planetary gear is rotatably supported by a support shaft fixed to a supercharger casing.