Title:
DETECTING DEVICE FOR ANGLE OF TURNING MOVEMENT
Document Type and Number:
Japanese Patent JP3436685
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance detecting sensitivity of an angle of turning movement by reducing an effect of a magnetic field from a magnet directly exerted on Hall elements.
SOLUTION: A first Hall element 26 is disposed between an extension part 23B of a first yoke 23 and a projection part 25B of a third yoke 25 while a second Hall element 27 is disposed between an extension part 25B of a second yoke 24 and the projection part 25B of the third yoke 25. A magnetic-pole detecting direction C-C is parallel to an axis of a valve shaft 2 and makes a right angle with a line A-A connecting magnetic poles of a magnet 22. This arrangement reduces an effect of a magnetic field generated from the magnet 22 directly exerted on Hall elements 26, 27.
Inventors:
Yoshihiro Kogure
Koji Nakazawa
Koji Nakazawa
Application Number:
JP8811398A
Publication Date:
August 11, 2003
Filing Date:
March 17, 1998
Export Citation:
Assignee:
Hitachi Unisia Automotive Co., Ltd.
International Classes:
G01B7/30; F02D9/00; F02D35/00; F02D45/00; G01B7/00; G01D5/14; G01D5/245; (IPC1-7): G01B7/30; F02D9/00; F02D35/00; F02D45/00; G01D5/14; G01D5/245
Domestic Patent References:
| JP9189509A | ||||
| JP9189508A | ||||
| JP4974877U |
Attorney, Agent or Firm:
Kazuhiko Hirose