To weaken a magnetic field formed on a surface different from the counterface surface of a sensor.SOLUTION: A magnet structure 30 for magnetoresistance effect elements comprises: a magnet molding 32 including an end surface 32a as a first principal surface that faces a magnetoresistance effect element among a pair of principal surfaces and an end surface 32b as a second principal surface different from the first principal surface, with N and S poles appearing on the first principal surface, and composed of an isotropic magnet; and a shaft 36 as a support for supporting the magnet molding 32. The strength of a magnetic field on the end surface 32a side of the magnet molding 32 is larger than the strength of a magnetic field on the end surface 32b side.SELECTED DRAWING: Figure 4
【課題】センサの対向面とは異なる面で形成される磁界を弱くする。【解決手段】磁気抵抗効果素子用の磁石構造体30は、一対の主面のうち、磁気抵抗効果素子に対向する第1の主面としての端面32aと、第1の主面とは異なる第2の主面としての端面32bと、を有し、第1の主面にN極およびS極が現れている、等方性磁石からなる磁石成型体32と、磁石成型体32を支持する支持部としてのシャフト36と、を備え、磁石成型体32は、端面32a側の磁界の強さが、端面32b側の磁界の強さよりも大きい。【選択図】図4
MAGNET STRUCTURE, ROTATION ANGLE DETECTOR, ELECTRIC POWER STEERING DEVICE, AND MANUFACTURING METHOD FOR MAGNET STRUCTURE
磁石構造体、回転角度検出器、電動パワーステアリング装置、および磁石構造体の製造方法
2019-09-19
Patent
Electronic Resource
Japanese
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