Title:
MAGNETIZING YOKE
Document Type and Number:
Japanese Patent JPS5928866
Kind Code:
A
Abstract:
PURPOSE:To facilitate the magnetization of a yoke and to integrate and reduce the size of the yoke by forming ring-shaped groove on the outer periphery of the end surface, and forming grooves of short pitch so as to form poles for detecting the frequency of short pitch on the end surface of the outer periphery of the groove. CONSTITUTION:Grooves 17' which perpendicularly cross at the center are formed on the end surface 16' of a cylinder 15' formed of a ferromagnetic material in a magnetizing yoke 14', energizing coils 18 of thick diameter are wound in the groove 17', a ring-shaped groove 20 is formed on the outer periphery of the end surface 16', and many grooves 19 of short equal pitch are formed so as to form poles for detecting the frequency of the short pitch on the end surface 16' of the outer periphery of the groove 20. Energizing coil 21 for forming poles for detecting the frequency of a fine diameter is spirally wound in the groove 19. In this manner, a magnetizing yoke can be integrally formed while being reduced in size, and the magnetization for the main poles and the poles for detecting the frequency can be facilitated.
Inventors:
HIRANO NORIMITSU
Application Number:
JP13838982A
Publication Date:
February 15, 1984
Filing Date:
August 11, 1982
Export Citation:
Assignee:
TAKAHASHI Y
International Classes:
H02K29/00; H02K15/03; (IPC1-7): H02K21/06; H02K29/00
Domestic Patent References:
| JPS5223609A | 1977-02-22 | |||
| JPS579252A | 1982-01-18 | |||
| JPS5498905A | 1979-08-04 | |||
| JP54114704B | ||||
| JPS5338159U | 1978-04-04 | |||
| JPS4327588Y1 | 1968-11-14 |