| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated core that a guiding part for introducing air into the core can be formed with no increase in kinds and the number of core sheets. SOLUTION: A rotating shaft fixing hole 45 penetrated by the rotating shaft is provided in an inner ring 43 of the core sheet 40. Sixteen extending teeth 46 are radially formed in an outer ring 44 at intervals of 22.5 deg.. The inner and outer rings 43, 44 are coupled by the first, second and third stays 49-51 formed at intervals of 120 deg.. The first, second and third protrusions 55-57 and a hole 58 are concentrically and sequentially disposed in the outer ring 44 of the core sheet 40 at intervals of 112.5 deg.. Since the protrusions 55-57 of the upper core sheet 40 are fitted into the second and third recesses 62, 63 formed on the back side of the second and the third protrusions 56, 57 on the second face 42 of the core sheet 40 and the hole 58, the teeth 46 are vertically laminated and the guiding part 53a for introducing air is formed by a laminated layer of the stays 49-51.
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