ELECTRIC MOTOR, ELECTRIC BLOWER PROVIDED WITH ELECTRIC MOTOR, AND ELECTRIC VACUUM CLEANER PROVIDED WITH ELECTRIC BLOWER

• Main Authors: HAMAZAKI MITSUMASA, TERAMOTO MASAYA, HAYATSU MAMORU
• Format: Patent
• Language: English; Japanese
• Published: 24.10.2019
• Subjects: BLASTING; COFFEE MILLS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DOMESTIC ARTICLES OR APPLIANCES; DOMESTIC WASHING OR CLEANING; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; FURNITURE; GENERATION; HEATING; HUMAN NECESSITIES; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; WEAPONS

To provide an electric motor that can suppress damage to the surface of a shaft before press-fitting a bearing while press-fitting an end cap into the shaft to ensure strength.SOLUTION: An electric motor includes a shaft rotatably supported, a rotor core having a plurality of magnetic poles and attached to or integrally formed with the outer periphery of the shaft, and a pair of bearings attached to the outer periphery of the shaft and rotatably supporting the shaft, and a first end cap and a second end cap are respectively attached to the positions corresponding to both ends of the rotor core when viewed in the longitudinal direction of the shaft, and the outer diameter φ1 of the shaft at the position where the first end cap and the second end cap are attached is larger than the outer diameter φ2 of the shaft at the position where the pair of bearings are attached.SELECTED DRAWING: Figure 4 【課題】軸に対しエンドキャップを圧入して強度を確保しながら、軸受を圧入する前に軸の表面への傷付きを抑えることができる電動機を提供することを目的とする。【解決手段】回転可能に支持される軸と、軸の外周に取り付けられた又は一体的に形成された、複数の磁極を有するローターコアと、軸を回転可能に支持する、軸の外周に取り付けられた１対の軸受と、を備え、軸の長手方向で見たときに、ローターコアの両端となる位置に第１のエンドキャップと第２のエンドキャップがそれぞれ取り付けられ、第１のエンドキャップ及び第２のエンドキャップが取り付けられている位置の軸の外径φ１は、１対の軸受が取り付けられている位置の軸の外径φ２よりも大きいものである。【選択図】図４