| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC generator which can convert mechanical dynamic energy into electrical energy with enhanced conversion efficiency. SOLUTION: In a DC generator, two magnetic pole rotors 7a and 7b are formed by alternately arranging seven N tooth-form sections 14 and seven S tooth-form sections 14 at regular angular intervals on the outer peripheries of two pairs of bobbins 9 fitted to a rotor shaft 8, and in each tooth-form section, pole cores 15a and 15b the front end sections of which respectively provided with different poles and are faced opposite to each other, by bending the front end sections inward in the axial direction and pole cores 15c and 15d the front end sections, which are made outwardly to face opposite to each other are provided. A rotor 7, having a pair of field poles, is formed by forming fourteen sets of exciting poles, composed of the two pairs of pole cores 15a and 15b and 15c and 15d in this way. In addition, numbers X and Y of pole cores 15 and stator cores 17 respectively are respectively adjusted to 14 (X=14) and 12 (Y=12), by forming twelve stator cores 12 which have different widths from those of the pole cores 1 on the inner periphery of a fixing frame 17, at regular angular intervals.
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