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1. (WO2007007585) MAGNETIC ENCODER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/007585 International Application No.: PCT/JP2006/313274
Publication Date: 18.01.2007 International Filing Date: 04.07.2006
IPC:
G01D 5/245 (2006.01) ,G01D 5/244 (2006.01)
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12
using electric or magnetic means
244
influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
245
using a variable number of pulses in a train
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12
using electric or magnetic means
244
influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
Applicants:
日本電産サンキョー株式会社 NIDEC SANKYO CORPORATION [JP/JP]; 〒3938511 長野県諏訪郡下諏訪町5329番地 Nagano 5329, Shimosuwa-machi, Suwa-gun Nagano 3938511, JP (AllExceptUS)
有賀 英吉 ARUGA, Fusayoshi [JP/JP]; JP (UsOnly)
森山 克也 MORIYAMA, Katsuya [JP/JP]; JP (UsOnly)
野口 直之 NOGUCHI, Naoyuki [JP/JP]; JP (UsOnly)
Inventors:
有賀 英吉 ARUGA, Fusayoshi; JP
森山 克也 MORIYAMA, Katsuya; JP
野口 直之 NOGUCHI, Naoyuki; JP
Priority Data:
2005-20089908.07.2005JP
Title (EN) MAGNETIC ENCODER
(FR) CODEUR MAGNÉTIQUE
(JA) 磁気エンコーダ
Abstract:
(EN) In a magnetic encoder (1), a permanent magnet (20) as a magnetic scale is provided with three rows of tracks (21) wherein N poles and S poles are alternately arranged along a shift direction. In the permanent magnet (20), at end portions (211) in the width direction of the tracks (21A, 21B, 21C), a rotating magnetic field wherein a planar direction changes is formed, and a sensor plane (16) of a magnetic sensor (15) faces a boundary portion (212) between the tracks (21A, 21B, 21C). Thus, detection accuracy of the magnetic encoder of the rotating magnetic field detection type is improved.
(FR) La présente invention concerne un codeur magnétique (1) dans lequel un aimant permanent (20) en tant qu’échelle magnétique est pourvu de trois rangées de pistes (21) où des pôles N et des pôles S sont disposés en alternance le long d’une direction de décalage. Dans l’aimant permanent (20), en des parties d’extrémité (211) dans la direction de la largeur des pistes (21A, 21B, 21C), un champ magnétique en rotation où change une direction plane est formé et un plan de détecteur (16) d’un détecteur magnétique (15) fait face à une partie de délimitation (212) entre les pistes (21A, 21B, 21C). Ainsi, la précision de détection du codeur magnétique de type détection de champ magnétique en rotation est améliorée.
(JA)  本発明の磁気エンコーダ1において、磁気スケールとしての永久磁石20では、移動方向に沿ってN極とS極が交互に並ぶトラック21が3列、形成されている。永久磁石20では、トラック21A、21B、21Cの幅方向の縁部分211では、面内方向の向きが変化する回転磁界が形成されており、トラック21A、21B、21Cの境界部分212に対して磁気センサ15のセンサ面16を面対向させている。  これにより、回転磁界検出型の磁気エンコーダの検出精度を向上することができる。
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US20100176801CN101213424