Title:
STEP MOTOR
Document Type and Number:
Japanese Patent JPS56139071
Kind Code:
A
Abstract:
PURPOSE:To reduce the size of a step motor by mounting an oscillator block at one end of a coil frame through which an iron core is inserted and forming a magnetic circuit by bringing a stator piece attached to an iron core into pressure contact with the inner surface of a yoke when assembling the block in the cylindrical yoke. CONSTITUTION:A crystal oscillator, a frequency divider, a drive circuit and so forth are sealed in a cylindrical oscillator block 1, and the block 1 is mounted at one end face of a stator coil frame 4. An iron core 6 is passed through the hollow portion of the frame 4, and a stator piece 8 made of magnetic unit is attached to the iron core 6. A magnetic circuit is formed with the iron core 6, the yoke 9 and the stator piece 8 by bringing the end 9a of the piece 8 into pressure contact with the inner peripheral surface of the yoke when containing the coil frame unit A in the yoke 9. A disk-shaped rotor 12 is rotatably supported to the shaft 9 projected through the teeth of the yoke 9.
Inventors:
INASUMI KOUICHI
MATSUMOTO AKIO
ARAKI KAZUHIRO
NISHIMURA CHISATO
MATSUMOTO AKIO
ARAKI KAZUHIRO
NISHIMURA CHISATO
Application Number:
JP4238980A
Publication Date:
October 30, 1981
Filing Date:
March 31, 1980
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H02K37/00; H02K37/12; (IPC1-7): H02K37/00