Importance

Loading Importance Indicators...

Abstract

A motor includes a rotor and a stator. The rotor includes a shaft extending in the axial direction of the central axis, and a rotor core having a shaft insertion hole into which the shaft is inserted. The motor has a fan that is fixed to the shaft or the rotor core at a position axially outside the rotor core and rotates together with the rotor core. The rotor core has an air passage. The shaft has a shaft inner passage. The air passage includes a first rotor core opening opened to an axial end surface of the rotor core and a second rotor core opening opened to an inner surface of the shaft insertion hole. The shaft inner passage includes a first shaft opening opened at a position on the axially outer side with respect to the fan, and a second shaft opening opened at a position connected to the second rotor core opening.

Loading the Abstract Image...

First Claim