INDUCTION MOTOR

• Main Authors: FURUKAWA TOMONORI, NASU KEIKO
• Format: Patent
• Language: English; Japanese
• Published: 07.05.2015
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To provide a technique for reducing the manufacturing cost of an induction motor.SOLUTION: The induction motor includes: a rotor core having a shaft hole; a shaft which passes through the shaft hole and in which a male screw is formed on the outer peripheral surface; a plurality of bars which are arranged in the axial direction inside the rotor core and whose both ends are exposed from the end faces of the rotor core in the axial direction; a first ring having electrical conductivity, being in contact with the end portions of the plurality of bars at one end face of the rotor core, and screwed with the male screw of the shaft; and a second ring having electrical conductivity, being in contact with the end portions of the plurality of bars at the other end face of the rotor core, and screwed with the male screw of the shaft to fix the rotor core by holding it between the first ring and itself. 【課題】誘導モータの製造コストを低減する技術を提供する【解決手段】本明細書が開示する誘導モータは、軸穴を有するロータコアと、軸穴を貫通しており、外周面にオネジが形成されているシャフトと、ロータコアの内部に軸方向にわたって配置されていると共に、ロータコアの軸方向両端面から両端部を露出している複数のバーと、導電性を有し、ロータコアの一方の端面において、複数のバーの端部のそれぞれに接しており、かつ、シャフトのオネジに螺合している、第１リングと、導電性を有し、ロータコアの他方の端面において、複数のバーの端部のそれぞれに接しており、かつ、シャフトのオネジに螺合することにより、第１リングとの間でロータコアを挟んで固定している第２リングとを備えている。【選択図】図３