| 摘要 |
PROBLEM TO BE SOLVED: To wind magnet wire with large conductor cross-section so as to have high density without being bulky for easy winding work and high mass production, by using strand formed by twisting a plurality of enameled wires. SOLUTION: A rotor 6 at which a permanent magnet 8 is fitted to the outer periphery part of a yoke 7 is supported so as to rotate through ball bearings 9, 9. A stator 10 in which the wiring 15A of magnet wire 15 is formed at a core 11 is fixed to a casing part so as to surround the rotor 6. As the magnet wire 15 for forming the wire 15A, strand is used, which is formed by twisting a plurality of fine enameled wires. Use of highly flexible strand provides much better workability in coiling than in the case of use of single wire with the identical conductor cross-section, as well as size and weight reduction. |
