Title:
回転角度検出装置
Document Type and Number:
Japanese Patent JP4269961
Kind Code:
B2
Abstract:
A rotation angle detecting device for a rotation object includes a rotor and a pair of permanent magnets and a magnetic detector disposed at the rotation axis of the rotation object. One of the permanent magnets has a circumferentially extending rut-shape concavity around the magnet detector or an axially extending elliptic columnar surface having a central portion thicker than others to make magnetic flux density in the vicinity of said magnetic detector constant in an axial or a diametrical direction.
Inventors:
Akitoshi Mizutani
Companion Takao
Companion Takao
Application Number:
JP2004028085A
Publication Date:
May 27, 2009
Filing Date:
February 04, 2004
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01B7/30; G01B7/00; G01D5/14
Domestic Patent References:
| JP10132506A | ||||
| JP2002022485A | ||||
| JP8005312A | ||||
| JP2003084007A | ||||
| JP2002310722A | ||||
| JP2003265435A |
Attorney, Agent or Firm:
Kenji Ishiguro