Title:
MAGNET TYPE MOTOR
Document Type and Number:
Japanese Patent JPS5937872
Kind Code:
A
Abstract:
PURPOSE:To improve the damagnetizing characteristic of a magnet type motor by securing another auxiliary pole which is formed of a permanent magnet material to the magnetizing size end of the auxiliary pole, thereby reducing the deviation of a brush. CONSTITUTION:A main pole 8, the first auxiliary pole 9 and te second auxiliary pole 10 are arranged on the positions of central angular positions alpha, beta and phi in a field pole 7. The pole 8 and the second pole 10 are magnetized by a permanent magnet which is formed of ferrite permanent magnet material, and the first pole 9 is formed of a magnetic unit such as a soft steel member or the like. According to the structure, the deviation in the magnetic neutral point can be reduced, the amount of displacing the sliding contact position of the armature 5 with a brush can be reduced, a reaction magnetic field applied to the end of the pole 8 can be reduced, and the demagnetizing characteristic of the pole 7 can be improved.
Inventors:
TANAKA TOSHINORI
Application Number:
JP14807982A
Publication Date:
March 01, 1984
Filing Date:
August 24, 1982
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02K23/40; H02K1/17; H02K23/04; (IPC1-7): H02K21/06
Attorney, Agent or Firm:
Masuo Oiwa
Previous Patent: A three-dimensional image display device, a three-dimensional image display method, and a three-dime...
Next Patent: JPS5937873
Next Patent: JPS5937873