Electric machine having improved cooling structure

Abstract

An electric machine having an improved cooling structure is disclosed. The electric machine includes: a housing including a front cover, a body, and a rear cover coupled to each other to form an accommodation space; a rotating shaft rotatably mounted at an axial center of the housing; a rotor hub coupled to the rotating shaft; a rotor coupled to the rotor hub to rotate together with the rotating shaft and including a plurality of permanent magnets arranged in a circumferential direction on a disc-shaped surface; and a stator fixedly mounted inside the housing to be opposite the rotor in an axial direction of the housing and including a plurality of coils arranged in the circumferential direction, wherein the rotor includes an air hole for allowing airflow between the front and rear sides along the axial direction of the housing.

Dependencies are inferred from the claim text.