| 摘要 |
PURPOSE:To effectively use a material, to reduce a cost and to improve the strength and assembling accuracy of a motor by holding a rotor at both end faces with retainers, to which a shaft is secured, and securing a rotor to the retainers. CONSTITUTION:Rotor retainers 101, 102 are secured with a bolt 14 to both ends of a cylindrical rotor 13. In this case, the rotational shaft l of the rotor 13 is secured to coincide with the axes of shafts 111 and 112. The shaft l of the rotor 13 becomes hollow. The bolt 14 has rigidity against twisting at the part near the outer periphery of the rotor 13, large bolt can be used, preferably with high strength against large centrifugal force. |
