Rotating electric machine

Abstract

A rotating electric machine is provided that has a variable flux mechanism allowing relative movement between a stator and a rotor, and that is small in thickness and diameter and allows a cooling path to be readily provided. The rotating electric machine includes: a rotary shaft; a rotor that includes a permanent magnet, provides torque to the rotary shaft, and is attached to the rotary shaft to be movable along an axis; a moving mechanism that moves the rotor along the axis; a stator that includes a coil and is disposed with a radial gap between the stator and an outer circumference of the rotor; and a rotation prevention device that prevents rotation of the moving mechanism. The moving mechanism includes: a screw shaft member that rotates together with the rotor and has an outer circumference with a helical screw groove and an inner circumference through which the rotary shaft is located; and a screw nut member screwed into the screw groove on the screw shaft member. The rotation prevention device includes: a guide on the screw shaft member; and a slider on a housing.

Dependencies are inferred from the claim text.