JP2015115529A - ケース付き圧縮ボンド磁石 - Google Patents
ケース付き圧縮ボンド磁石 Download PDFInfo
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Abstract
Description
2 圧縮ボンド磁石
3 ケース
4 封止部材
5 検出センサー
6 ダイス
7 上パンチ
8 下パンチ
9 ディスペンサー
10 乾燥機
Claims (7)
- 希土類磁石粉末と熱硬化性樹脂の樹脂バインダとを含む圧縮ボンド磁石と、該圧縮ボンド磁石を挿入するケースと、封止部材とを備えてなるケース付き圧縮ボンド磁石であって、
前記圧縮ボンド磁石は、前記希土類磁石粉末と前記樹脂バインダとを含む混合物を圧縮成形して圧紛体とし、該圧紛体中の前記樹脂バインダを硬化させて形成され、
前記ケースの前記圧縮ボンド磁石の挿入開口部に前記封止部材が固定され、前記圧縮ボンド磁石が該封止部材と前記ケースとで密封されていることを特徴とするケース付き圧縮ボンド磁石。 - 前記希土類磁石粉末が前記圧縮ボンド磁石全体に対して体積比率で85〜90%含まれていることを特徴とする請求項1記載のケース付き圧縮ボンド磁石。
- 前記希土類磁石粉末が等方性Nd−Fe−B磁石粉末であることを特徴とする請求項1または請求項2記載のケース付き圧縮ボンド磁石。
- 前記ケースが非磁性材からなり、
前記圧縮ボンド磁石が略円柱形状であり、該円柱の径方向に磁化されており、該円柱の外周面側および底面側を覆って前記ケースが配置され、該円柱の上面側に前記封止部材が配置されることを特徴とする請求項1から請求項3のいずれか1項記載のケース付き圧縮ボンド磁石。 - 前記圧縮ボンド磁石の外周面の円柱上面側一部と前記ケースとの間に前記封止部材が介在することを特徴とする請求項4記載のケース付き圧縮ボンド磁石。
- 前記封止部材が熱硬化性樹脂の硬化物からなり、前記圧紛体を前記ケースに挿入した状態で前記樹脂バインダと前記封止部材とが同一工程で硬化されてなることを特徴とする請求項1から請求項5のいずれか1項記載のケース付き圧縮ボンド磁石。
- 腐食性環境下で使用される回転角度検出センサーを構成する磁石であることを特徴とする請求項1から請求項6のいずれか1項記載のケース付き圧縮ボンド磁石。
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JP2013258187A JP6258689B2 (ja) | 2013-12-13 | 2013-12-13 | ケース付き圧縮ボンド磁石 |
US15/104,224 US9818521B2 (en) | 2013-12-13 | 2014-12-10 | Compression-bonded magnet with case and method for producing the same |
EP14869479.7A EP3082137B1 (en) | 2013-12-13 | 2014-12-10 | Compression-bonded magnet with case, and method for producing same |
CN201810177241.1A CN108335824B (zh) | 2013-12-13 | 2014-12-10 | 带壳体压缩粘结磁铁及其制造方法 |
PCT/JP2014/082614 WO2015087890A1 (ja) | 2013-12-13 | 2014-12-10 | ケース付き圧縮ボンド磁石およびその製造方法 |
CN201480067924.1A CN105814651B (zh) | 2013-12-13 | 2014-12-10 | 带壳体压缩粘结磁铁及其制造方法 |
US15/785,400 US10600541B2 (en) | 2013-12-13 | 2017-10-16 | Compression-bonded magnet with case and method for producing the same |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017135372A (ja) * | 2016-01-25 | 2017-08-03 | ミネベアミツミ株式会社 | 希土類ボンド磁石 |
US20180122570A1 (en) * | 2016-10-27 | 2018-05-03 | Ut-Battelle, Llc | Bonded permanent magnets produced by big area additive manufacturing |
US10629342B2 (en) | 2016-01-25 | 2020-04-21 | Minebea Mitsumi Inc. | Rare earth bonded magnet |
CN111405953A (zh) * | 2017-11-10 | 2020-07-10 | 赛峰传动系统公司 | 磁化旋转部件的制造方法、旋转部件以及旋转部件的旋转的测量系统 |
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JPS5792115U (ja) * | 1980-11-25 | 1982-06-07 | ||
JPH05157507A (ja) * | 1991-06-18 | 1993-06-22 | Mitsubishi Electric Corp | 磁気センサおよび磁気センサ用磁石の固定方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2017135372A (ja) * | 2016-01-25 | 2017-08-03 | ミネベアミツミ株式会社 | 希土類ボンド磁石 |
US10629342B2 (en) | 2016-01-25 | 2020-04-21 | Minebea Mitsumi Inc. | Rare earth bonded magnet |
US20180122570A1 (en) * | 2016-10-27 | 2018-05-03 | Ut-Battelle, Llc | Bonded permanent magnets produced by big area additive manufacturing |
CN111405953A (zh) * | 2017-11-10 | 2020-07-10 | 赛峰传动系统公司 | 磁化旋转部件的制造方法、旋转部件以及旋转部件的旋转的测量系统 |
CN111405953B (zh) * | 2017-11-10 | 2022-08-05 | 赛峰传动系统公司 | 磁化旋转部件的制造方法、旋转部件以及旋转部件的旋转的测量系统 |
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