Title:
BRUSH-LESS TYPE ROTATION DETECTOR SHIELDING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2005/029685
Kind Code:
A1
Abstract:
It is possible to provide a brush-less type rotation detector shielding structure capable of reducing the interference of magnetic flux leaking from a rotation transformer to a stator iron core and rotor iron core and suppressing lowering of the angle detection accuracy. As shown in Fig. 1, the shielding structure is used for a brush-less type rotation detector including: a rotation transformer having a rotor transformer (3) and stator transformer (4); a signal modulation section having a stator iron core (2) and a rotor iron core (1); and a case (5) for containing them. The shielding structure has a main configuration having a stator magnetic shielding section (44) capable of magnetically shielding between the stator iron core (2) constituting the signal modulation section and the stator transformer (4).
Inventors:
TAGAWA HIROSHI (JP)
Application Number:
PCT/JP2004/013556
Publication Date:
March 31, 2005
Filing Date:
September 16, 2004
Export Citation:
Assignee:
TAMAGAWA SEIKI CO LTD (JP)
TAGAWA HIROSHI (JP)
TAGAWA HIROSHI (JP)
International Classes:
G01D5/245; H02K11/00; H02K24/00; H02K29/08; (IPC1-7): H02K24/00
Foreign References:
| JPS62161573U | 1987-10-14 | |||
| JP2001272204A | 2001-10-05 | |||
| JPS6389043A | 1988-04-20 |
Other References:
See also references of EP 1667313A4
Attorney, Agent or Firm:
Tomisawa, Tomonari c/o Hachinohe, Intelligent Plaza (1-4-43 Kita-inter-kougyou-danch, Hachinohe-shi Aomori 45, JP)
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