Patent ID: 9413207
Filing Date: 2016-08-09
CPC Classification: H02K

Claim Text:
1. An AC generator, comprising: a casing having an outlet on an outer periphery and an inlet at an end part in an axial direction; a stator installed in the casing; a rotor supported in the stator in a rotatable manner; a fan installed oppositely to the inlet in the casing and rotated integrally with the rotor; and a protrusion formed on a surface of the casing opposing a tip end of the fan at a position adjacent to an outer periphery of the inlet of the casing, wherein the fan has a fan main body and multiple vanes provided to the fan main body, wherein each of the multiple vanes has a portion having a maximum height of the vanes at a point between an inner periphery and an outer periphery of the fan main body, wherein the casing has multiple inlets including the inlet at the end part in the axial direction, wherein a diameter of an outer periphery of the multiple inlets of the casing is larger than a diameter of a periphery of the fan, which forms the portion having the maximum height of the vanes, and wherein an end portion of the protrusion on a side of the fan is extended toward the fan to be parallel to the axial direction of the rotor.