JP2019158411A - 磁石構造体、回転角度検出器および電動パワーステアリング装置 - Google Patents
磁石構造体、回転角度検出器および電動パワーステアリング装置 Download PDFInfo
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Abstract
Description
Claims (6)
- 磁気抵抗効果素子用の磁石構造体であって、
一対の主面のうち、前記磁気抵抗効果素子に対向する第1の主面と、前記第1の主面とは異なる第2の主面と、を有し、磁化の方向が前記一対の主面と交差する方向であって、前記第1の主面にN極およびS極が現れている磁石成型体と、
前記磁石成型体を支持する支持部と、
前記磁石成型体の前記第2の主面よりも前記磁気抵抗効果素子から離間した側において、前記磁石成型体の前記一対の主面と交差する方向で見たときに前記磁石成型体と重なる位置に設けられるヨーク部と、
を備える、磁石構造体。 - 前記ヨーク部は、前記第2の主面側において、前記第1の主面側で現れる前記N極と前記S極とを接続する領域に対応して設けられる、請求項1に記載の磁石構造体。
- 前記ヨーク部は、前記磁石成型体の前記一対の主面と交差する方向で見たときに前記磁石成型体を全て覆うように設けられる、請求項1に記載の磁石構造体。
- 前記磁石成型体により前記第2の主面側に形成される磁界の強さは、前記第1の主面側に形成される磁界の強さよりも小さい、請求項1〜3のいずれか一項に記載の磁石構造体。
- 請求項1〜4のいずれか一項に記載の磁石構造体と、前記第1の主面側において前記磁石構造体と対向配置された前記磁気抵抗効果素子とを備える、回転角度検出器。
- 請求項5に記載の回転角度検出器を備える、電動パワーステアリング装置。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015050109A1 (ja) * | 2013-10-02 | 2015-04-09 | 株式会社ニコン | エンコーダ用スケール、エンコーダ、駆動装置及びステージ装置 |
JP2016153766A (ja) * | 2015-02-20 | 2016-08-25 | Tdk株式会社 | 磁石構造体及び回転角度検出器 |
JP2017009312A (ja) * | 2015-06-17 | 2017-01-12 | 株式会社ジェイテクト | 回転角センサ、それを備えたモータ装置および回転角センサの製造方法 |
WO2017135440A1 (ja) * | 2016-02-05 | 2017-08-10 | 三菱電機株式会社 | 回転角検出装置および電動機 |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2015050109A1 (ja) * | 2013-10-02 | 2015-04-09 | 株式会社ニコン | エンコーダ用スケール、エンコーダ、駆動装置及びステージ装置 |
JP2016153766A (ja) * | 2015-02-20 | 2016-08-25 | Tdk株式会社 | 磁石構造体及び回転角度検出器 |
JP2017009312A (ja) * | 2015-06-17 | 2017-01-12 | 株式会社ジェイテクト | 回転角センサ、それを備えたモータ装置および回転角センサの製造方法 |
WO2017135440A1 (ja) * | 2016-02-05 | 2017-08-10 | 三菱電機株式会社 | 回転角検出装置および電動機 |
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