| 摘要 |
One aspect of the present invention provides a linear power generator in which cogging is sufficiently constrained. The linear power generator (1) includes a columnar or cylindrical center yoke (2) made of a soft magnetic material and an outer yoke (3) made of a soft magnetic material. In the center yoke (2), plural rod-shaped permanent magnets (10) magnetized in a circumferential direction are arranged in the circumferential direction in an outer circumference of the center yoke (2) such that opposed magnetic poles of the permanent magnets (10) adjacent to each other become identical, the permanent magnets (10) are extended in an axial direction, and the center yoke (2) includes plural center-side projecting portions (11a) linearly arranged in the circumferential direction. The cylindrical or columnar outer yoke (3) includes plural winding portions (25), plural groove portions (22), and an outer-side projecting portion (23a). The winding portions (25) are arranged in the circumferential direction about a center axis. The groove portions (22) are arranged at positions opposed to the permanent magnets (10). The outer-side projecting portion (23a) is arranged while opposed to the center-side projecting portion (11), the outer-side projecting portion (23a) is deviated from the center-side projecting portion (11a) by a half pitch, and the groove portion (22) is pinched by the outer-side projecting portion (23a) in the circumferential direction. |
