INDUCTION MOTOR AND MANUFACTURING METHOD THEREOF

摘要

An induction motor includes multiple conductor bars buried and disposed in a rotor core in a circumferential direction, and end rings joined with the multiple conductor bars so as to cause respective both ends thereof to be electrically conducted. Each conductor bar includes a first bar-shape metal portion, and two second metal portions joined with both ends thereof. The second metal portion is formed in a solid block shape. The first and second metal portions are joined with each other by friction stir welding or friction welding.

主权项

1. An induction motor comprising a conductor cage, the conductor cage comprising a plurality of conductor bars buried and disposed in a rotor core in a circumferential direction, and end rings joined with the plurality of conductor bars so as to cause respective both ends thereof to be electrically conducted,
wherein: each conductor bar comprises a first bar-shape metal portion, and two second metal portions joined with both ends of the first metal portion; and the second metal portion is formed in a block shape.