Electrical machine e.g. electromotor used in motor car, has spoke portion whose free end is connected with hub portion, and recesses which are formed at connected ends of spoke portion

摘要

#CMT# #/CMT# The electric machine (100) has a rotor (110) that is provided with an armature (125) for conducting a magnetic flux. The armature is provided with a hub portion (130) and spoke portions (135) that are radially extended from the hub portion of spoke portions. The free end of spoke portion is connected with the hub portion. The recesses (160) are formed at the connected ends of the spoke portions. #CMT#USE : #/CMT# Electrical machine e.g. sliding current electromotor used in motor car. #CMT#ADVANTAGE : #/CMT# The mass of an electric machine can be reduced. The efficiency of the electrical machine can be improved. The magnetic flux can be conducted easily. The material saving can be achieved. The manufacturing cost of the electric machine can be reduced. The emission of exhaust gas from the motor car can be reduced. The weight of the motor car can be reduced. The armature can be manufactured easily. The stress applied to the armature can be reduced. The stability of the armature can be improved. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a cross-sectional view of the electrical machine. 100 : Electric machine 110 : Rotor 125 : Armature 130 : Hub portion 135 : Spoke portions 160 : Recesses.