| 摘要 |
PROBLEM TO BE SOLVED: To provide an insulator for motor, or the like, which can be shared on both sides of a core press fitted to a shaft having a knurled part.SOLUTION: An insulator for a motor includes a press fit part having a bore diameter and being press fitted to a shaft from both sides of a core press fitted in a knurled part formed in the outer peripheral surface of a shaft in the longitudinal direction thereof. The press fit part includes a first fitting part having a bore diameter, viewed from the central axis direction of the press fit part, set to fit in the knurled part when being inserted into the shaft from the side opposite from the press fitting side of the core, and a second fitting part having a bore diameter smaller than that of the first fitting part at a position deviated from the first fitting part, when viewed from the central axis direction of the press fit part, and set to fit in the knurled part collapsed by press fit of the core when being inserted into the shaft from the press fitting side of the core. |
