| 摘要 |
PURPOSE:To prevent a bearing from slipping from a shaft by suspending the inner race of the bearing to the shaft and a collar and press-fitting it. CONSTITUTION:A core 12 formed with a secondary conductor is press-fitted to a shaft 11 to construct a rotor 13, and grooves 14a, 14b are formed circumferentially of the shaft 11 at both sides of the core 12. Collars 15a, 15b formed of resin are respectively engaged with the grooves 14a, 14b. Further, the collars 15a, 15b are extended axially toward the core 12, and large-sized blades 16a, 16b are integrally formed. Thus, since the collars 15a, 15b are respectively engaged with the inner races of the bearings 10a, 10b and formed of resin, the thermal resin coefficient is larger than that of an iron material of the shaft 11, etc., and expanded larger than the inner race of the bearing 11. Thus, it can prevent the inner race from slipping.
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