JPH0297869U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a sectional view of the embodiment of the present invention, Fig. 2 is a perspective view of the stator, Fig. 3 is an explanatory diagram of the relationship between the rotor and teeth, Fig. 4 is an explanatory diagram of data, and Fig. 5 is an explanatory diagram of the conventional example. It is. 1... Casing, 12... Main shaft, 13... Pressing piece,
2... Rotor, 3... Stator, 31... First iron core, 3
1a...short teeth, 31b...bottom surface, 32...second iron core, 32a...long teeth, 32b...bottom surface, 4...coil, 5...pole core, 6...inner pole core.

Claims (1)

[Scope of utility model registration request] A rotor consisting of a cylindrical permanent magnet with N and S poles arranged alternately in the axial direction, a bottomed cylindrical first iron core in which a plurality of short teeth are arranged in the axial direction, and a plurality of short teeth. A bottomed cylindrical second iron core in which long teeth are arranged in the axial direction is combined, and the short teeth and long teeth have a stator disposed around the outer periphery of the rotor, and as the rotor rotates. It is a small generator in which electric power is induced in a coil wound around the connection between the bottom surfaces of the first and second iron cores, and the magnet is inside a thick cylindrical pole core made of soft magnetic material. A pipe-shaped inner pole core made of an iron plate is inserted, and both ends of the inner pole core are inserted into holding holes formed on the bottom surfaces of the first iron core and the second iron core, or are fixed with screws. , a small generator characterized in that both end surfaces of the pole core are in close contact with the bottom surfaces of the first iron core and the second iron core.