| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently suppress cogging of a linear power generation device.SOLUTION: A power generator 1 is constituted including: a center yoke 2, made of a soft magnetic body, that is constituted by arranging a plurality of rod-like permanent magnets 10, which are in a columnar or cylindrical shape and has columnar or cylindrical outer peripheries magnetized long in axial directions to N and S polarities in peripheral directions, in a peripheral direction such that magnetic poles of adjacent permanent magnets 10 have the same polarity, and also includes a plurality of center-side projection parts 11a arranged linearly in a peripheral direction; and an outer yoke 3, made of a soft magnetic body, that includes a plurality of winding parts 25 which are in a cylindrical or columnar shape and arranged in a peripheral direction around a center axis, a plurality of groove parts 22 which are arranged at positions opposed to the permanent magnets 10, and outer-side projection parts 23a which are arranged opposite the center-side projection parts 11a while shifting by a half pitch in an axial direction and situated with the groove parts 22 interposed in the peripheral direction. |
