Title:
アクチュエータ
Document Type and Number:
Japanese Patent JP4169536
Kind Code:
B2
Abstract:
A magnetic sensor unit includes an actuator motor and a magnetic position sensor. The actuator motor has a magnetic circuit including motor magnets. The magnetic position sensor includes a sensor magnet and a hall element for detecting magnetic flux. Magnet clearances are formed between the motor magnets. The hall element is disposed outside of the motor to detect the magnetic flux in a direction penetrating through the magnet clearances, and which is perpendicular to a direction from one of the motor magnets to the other. In this disposition of the hall element, it is restricted that the hall element detects leaking magnetic flux from the motor magnets.
Inventors:
Tokunaga Masao
Kenji Takeda
Tomomitsu Kamiya
Kenji Takeda
Tomomitsu Kamiya
Application Number:
JP2002186017A
Publication Date:
October 22, 2008
Filing Date:
June 26, 2002
Export Citation:
Assignee:
株式会社日本自動車部品総合研究所
株式会社デンソー
株式会社デンソー
International Classes:
G01D5/18; G01B7/00; G01B7/30; G01D5/12; G01D5/14; G01D9/12; H02K11/00
Domestic Patent References:
| JP62254645A | ||||
| JP2001025212A | ||||
| JP4075491A | ||||
| JP10054837A | ||||
| JP2002062162A |
Attorney, Agent or Firm:
Motomu Itou
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