Title:
BRUSHLESS MOTOR
Document Type and Number:
Japanese Patent JPS57193960
Kind Code:
A
Abstract:
PURPOSE:To make it possible to control easily the rotational speed with a constant voltage and the adjustment of the gap between the rotor and stator by making the air gap variable for changeable magnetic flux density. CONSTITUTION:A magnetic pole 9 is mounted on a stator 8 by means of threading and the pole 9 is rotated by a screw driver and the like to make the air gap 10 between a rotor 5 and the magnetic pole 9 variable by constitution. With this arrangement the magnetic flux density that develops in the air gap 10 becomes variable and the voltage in the coil 1 and so on induced by the rotation of the rotor 5 varies. Accordingly even if the voltage applied to the coil and so on is constant, rotational speed of the rotor can be made variable and the construction and maintenance can be made simple.
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Inventors:
OOTSU SUGURU
Application Number:
JP7815481A
Publication Date:
November 29, 1982
Filing Date:
May 25, 1981
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
H02K29/00; (IPC1-7): H02K29/00
Domestic Patent References:
| JP15029679Y1 | ||||
| JPS4924902B1 | 1974-06-26 | |||
| JPS5217810B2 | 1977-05-18 |
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