JP2019092354A5 - - Google Patents

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Publication number
JP2019092354A5
JP2019092354A5 JP2017221454A JP2017221454A JP2019092354A5 JP 2019092354 A5 JP2019092354 A5 JP 2019092354A5 JP 2017221454 A JP2017221454 A JP 2017221454A JP 2017221454 A JP2017221454 A JP 2017221454A JP 2019092354 A5 JP2019092354 A5 JP 2019092354A5
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JP
Japan
Prior art keywords
protective layer
permanent magnet
gap
resin
outer peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
JP2017221454A
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Japanese (ja)
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JP7064850B2 (en
JP2019092354A (en
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Publication date
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Priority to JP2017221454A priority Critical patent/JP7064850B2/en
Priority claimed from JP2017221454A external-priority patent/JP7064850B2/en
Priority to CN201811364301.7A priority patent/CN109802502B/en
Publication of JP2019092354A publication Critical patent/JP2019092354A/en
Publication of JP2019092354A5 publication Critical patent/JP2019092354A5/ja
Application granted granted Critical
Publication of JP7064850B2 publication Critical patent/JP7064850B2/en
Active legal-status Critical Current
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Description

また、本例では、永久磁石８の外側面５５と第１環状外周面部分２５との間、および、永久磁石８の外側面５５と第２環状外周面部分２６との間には、隙間７０があり、保護層９の樹脂６２は、この隙間７０に浸入した浸入部６２ｂを備える。ここで、保護層９は、浸入部６２ｂを備えることによって、樹脂６２と永久磁石８との接触面積が大きくなる。従って、保護層９の永久磁石８からの剥離や、保護層９が永久磁石８に対して相対回転することを抑制しやすい。また、保護層９が浸入部６２ｂを備えるので、保護層９が軸線Ｌ方向に移動することが防止或いは抑制される。 Further, in this example, there is a gap 70 between the outer surface 55 of the permanent magnet 8 and the first annular outer peripheral surface portion 25, and between the outer surface 55 of the permanent magnet 8 and the second annular outer peripheral surface portion 26. The resin 62 of the protective layer 9 includes an intrusion portion 62b that has penetrated into the gap 70. Here, the protective layer 9 is provided with the penetration portion 62b, so that the contact area between the resin 62 and the permanent magnet 8 is increased. Accordingly, separation or from the permanent magnet 8 of the protective layer 9, easily prevent the protective layer 9 rotates relative to the permanent magnet 8. Further, since the protective layer 9 includes the intrusion portion 62b, the protective layer 9 is prevented or suppressed from moving in the axis L direction.

JP2017221454A 2017-11-17 2017-11-17 Rotor and motor Active JP7064850B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017221454A JP7064850B2 (en) 2017-11-17 2017-11-17 Rotor and motor
CN201811364301.7A CN109802502B (en) 2017-11-17 2018-11-16 Rotor and motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017221454A JP7064850B2 (en) 2017-11-17 2017-11-17 Rotor and motor

Publications (3)

Publication Number Publication Date
JP2019092354A JP2019092354A (en) 2019-06-13
JP2019092354A5 true JP2019092354A5 (en) 2020-11-19
JP7064850B2 JP7064850B2 (en) 2022-05-11

Family

ID=66556290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017221454A Active JP7064850B2 (en) 2017-11-17 2017-11-17 Rotor and motor

Country Status (2)

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JP (1) JP7064850B2 (en)
CN (1) CN109802502B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021029062A (en) * 2019-08-09 2021-02-25 日本電産サンキョー株式会社 Rotor and motor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS612776U (en) * 1984-06-13 1986-01-09 神鋼電機株式会社 Permanent magnet rotor of brushless motor
JPS614447A (en) * 1984-06-18 1986-01-10 Aisan Ind Co Ltd Rotor for stepping motor and manufacture thereof
JP2942434B2 (en) * 1993-02-23 1999-08-30 富士電気化学株式会社 Rotor for stepping motor and method of manufacturing the same
JPH10201153A (en) * 1997-01-07 1998-07-31 Oppama Kogyo Kk Rotor for rotary machine
JP3484051B2 (en) * 1997-09-10 2004-01-06 株式会社 日立インダストリイズ Permanent magnet synchronous motor, method for manufacturing the same, and centrifugal compressor equipped with permanent magnet synchronous motor
CN100435456C (en) * 2003-09-25 2008-11-19 乐金电子(天津)电器有限公司 Rotor of variable reluctance dynamo
JP4143631B2 (en) * 2005-09-01 2008-09-03 トヨタ自動車株式会社 Manufacturing method of rotor
US7965009B2 (en) * 2006-10-17 2011-06-21 Sanyo Denki Co., Ltd. Motor rotor and manufacturing method thereof
CN102751801B (en) * 2007-07-06 2014-10-15 日本电产三协株式会社 Motor, and rotor, and manufacturing method for the rotor, and a motor provided with the rotor
JP4932620B2 (en) * 2007-07-06 2012-05-16 日本電産サンキョー株式会社 Rotor, rotor manufacturing method, and motor
US8247938B2 (en) * 2008-07-28 2012-08-21 Direct Drive Systems, Inc. Rotor for electric machine having a sleeve with segmented layers
JP6212020B2 (en) * 2014-11-13 2017-10-11 ファナック株式会社 Manufacturing method of rotor
JP6571546B2 (en) * 2016-01-21 2019-09-04 ファナック株式会社 Method for manufacturing rotor of electric motor

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