CN104040852B - 磁轮 - Google Patents

磁轮 Download PDF

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Publication number
CN104040852B
CN104040852B CN201280062426.9A CN201280062426A CN104040852B CN 104040852 B CN104040852 B CN 104040852B CN 201280062426 A CN201280062426 A CN 201280062426A CN 104040852 B CN104040852 B CN 104040852B
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CN
China
Prior art keywords
wheel
recess
wheel hub
carrying
magnet
Prior art date
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Active
Application number
CN201280062426.9A
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English (en)
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CN104040852A (zh
Inventor
洛塔尔·施勒德尔
扬·魏玛
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Vitesco Technologies GmbH
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Continental Automotive GmbH
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Publication of CN104040852A publication Critical patent/CN104040852A/zh
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21Devices for sensing speed or position, or actuated thereby
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • H02K1/272Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2726Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733Annular magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Brushless Motors (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

本发明涉及一种用于电动机的磁轮,由轴(2)和由包括磁性颗粒的塑料组成的轮盘(3)组成,其中在承载轮毂(4)上布置轮盘(2),并且承载轮毂(4)与轴(2)按压到一起,承载轮毂(4)构造为开口的环,轮盘(3)借助喷射注塑围绕该环一体成形。

Description

磁轮
技术领域
本发明涉及一种用于电动机的磁轮,由轴和轮盘构成,轮盘由包括磁性颗粒的塑料构成,其中轮盘布置在承载轮毂上,并且承载轮毂与轴按压在一起。
背景技术
在无刷直流电动机中使用此类的磁轮作为位置传感器的组成部分并且它们由此为人所知。通过将包含铁颗粒的塑料注塑到承载轮毂上来制造磁轮的轮盘。承载轮毂是由适合材料例如钢或者黄铜构成的封闭环。随后将具有已注塑的轮盘的承载轮毂压紧到轴上。在该构造中存在以下缺点,在压紧承载轮毂时,基于制造条件的轴的公差有时在承载轮毂中出现明显的应力,其降低了磁轮的寿命。特别是在最差的情况下面临磁轮损坏的危险,其可能导致在位置传感器中的误差函数。
发明内容
本发明的目的在于,实现一种磁轮,其中出现的由于制造条件造成的负荷不会导致单个组成部件的损坏。
这样实现该目的,即承载轮毂构造为开口的环,轮盘借助于喷射注塑围绕环一体形成。
承载轮毂的开口的设计方案使得对于轴的公差的反应在本质上得到改善。由此承载轮毂作为轴的一种弹簧环绕轴,并且由此当轴直径更大时可以扩展。用这种方式在承载轮毂中明显减少了应力,这提高了磁轮的寿命。基于塑料的更大的多样性,承载轮毂的扩展并不本质上有助于提高轮盘中的应力。其他的优势在于,基于有开口的承载轮毂也允许了在轴直径和毂孔中有更大的制造公差,如此简化了制造。
当用于承载轮毂的环由带钢材料卷制时,生产成本是非常低廉的。
在例如至今为止的其他设计中,用于承载轮毂的环可以是车削件或者冲模件,在车削件或冲模件中设置有开口。如果在压力注塑包封之前环仍被加工,是特别有优势的。
由于承载轮毂的扩展可能产生轮盘与承载轮毂的相对移动。此时被证明有利的是,承载轮毂和轮盘为了更安全的转矩传输彼此相连,在这种情况承载轮毂具有径向外侧的凹口。
当在如下区域内布置凹口时,即区域的端部与开口距离至少90°来布置,在此利用凹口实现不妨碍承载轮毂扩展的承载轮毂和轮盘之间的更安全的连接。之后分别在开口左侧和右侧的至少90°距离内不布置凹口。在此区域内在扩展时导致轮盘和承载轮毂之间的相对移动。由此减少了应力。
利用具有至少一个压印的形式,优选的具有压花形式的凹口,实现承载轮毂和轮盘的内部连接。
在另外的方案中可以特别简单地制造凹口,当它在承载轮毂中是单个凹进部时,在开口的对面布置凹口。由于待传递的转矩很小,单个的凹进部经常是足够的。对此有利的是,存在承载轮毂的这样大的范围,即允许塑料和承载轮毂的相对移动。
对于更大的力矩移动,在承载轮毂中布置两个到四个凹进部,其相对于开口对称地布置。
附图说明
借助实施例详细阐述本发明。附图示出。
图1磁轮的半剖面,
图2,3承载轮毂的另外实施方式。
具体实施方式
磁轮1由轴2和轮盘3组成,轴可以作为电动换向电动机的轴,轮盘由结合铁氧体的塑料制成。借助注塑将塑料模制到承载轮毂4上。承载轮毂4具有开口5,开口为了简明起见布置在切割面中。相对于开口5且以180°的距离,承载轮毂4具有径向向外的凹进部8形式的凹口6。当注塑结合铁氧体的塑料时,塑料填充了凹口6并且由此产生了与承载轮毂的内部连接。当承载轮毂4与轮盘3按压到一起时,承载轮毂4可以在轴2上扩展,其中在开口5的左侧和右侧区域内可以得到承载轮毂4和轮盘3之间的相对移动。
在随后的图中示出没有轮盘和轴的承载轮毂4。图2示出具有两个压花7的形式的凹口6的承载轮毂4。在如下区域中布置压花7,其对称地位于开口5对面并且延伸经过60°。压花7分别延伸经过20°的范围并且彼此具有20°的距离。由此压花7具有距开口5的150°的距离。图3中的承载轮毂4具有以三个对称于开口5布置的凹进部8的形式的凹口6,凹口,凹进部彼此具有30°的距离。

Claims (8)

1.一种用于电动机的磁轮,由轴和轮盘构成,所述轮盘由包括磁性颗粒的塑料构成,其中所述轮盘布置在承载轮毂上,并且所述承载轮毂与所述轴按压到一起,其特征在于,所述承载轮毂(4)构造为开口的环,所述轮盘(3)借助喷射注塑围绕所述环一体形成,其中,所述开口将所述承载轮毂分开,所述承载轮毂(4)具有径向外侧的凹口(6),所述凹口用于使得所述承载轮毂和所述轮盘连接。
2.根据权利要求1所述的磁轮,其特征在于,所述承载轮毂(4)是由带钢材料卷制的。
3.根据权利要求1所述的磁轮,其特征在于,所述承载轮毂(4)是车削件或者冲模件,在车削件或者冲模件中设置有开口(5)。
4.根据权利要求1所述的磁轮,其特征在于,所述凹口(6)布置在一个区域中,并且所述区域的端部至少90°地远离于所述开口(5)布置。
5.根据权利要求4所述的磁轮,其特征在于,所述凹口(6)以至少一个压印的形式构造。
6.根据权利要求5所述的磁轮,其特征在于,所述凹口(6)以压花(7)的形式构造。
7.根据权利要求1所述的磁轮,其特征在于,所述凹口(6)是所述承载轮毂(4)中的单个的凹进部(8),所述凹进部布置在所述开口(5)的对面。
8.根据权利要求4所述的磁轮,其特征在于,所述凹口(6)是所述承载轮毂(4)中的两个到四个凹进部(8),所述凹进部相对于所述开口(5)对称地布置。
CN201280062426.9A 2011-12-20 2012-12-19 磁轮 Active CN104040852B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011089243A DE102011089243A1 (de) 2011-12-20 2011-12-20 Magnetrad
DE102011089243.5 2011-12-20
PCT/EP2012/076069 WO2013092653A2 (de) 2011-12-20 2012-12-19 Magnetrad

Publications (2)

Publication Number Publication Date
CN104040852A CN104040852A (zh) 2014-09-10
CN104040852B true CN104040852B (zh) 2018-04-17

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Country Status (7)

Country Link
US (1) US9882456B2 (zh)
EP (1) EP2795772A2 (zh)
JP (1) JP6066128B2 (zh)
KR (1) KR20140117357A (zh)
CN (1) CN104040852B (zh)
DE (1) DE102011089243A1 (zh)
WO (1) WO2013092653A2 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3025666B1 (fr) * 2014-09-09 2019-05-17 Sc2N Cible magnetique
DE102014226735A1 (de) 2014-12-19 2016-06-23 Continental Automotive Gmbh Magnetrad
DE102015206103A1 (de) * 2015-04-02 2016-10-20 Bühler Motor GmbH Magnetgeber
EP3350905A1 (fr) * 2015-09-14 2018-07-25 Sc2N Cible magnétique
DE102015121102B4 (de) * 2015-12-03 2019-11-07 Bühler Motor GmbH Rotorvorrichtung für einen Elektromotor und/oder Generator, Rotor und Motor mit einer solchen Rotorvorrichtung sowie Herstellungsverfahren
CN212340273U (zh) * 2017-10-31 2021-01-12 三菱电机株式会社 旋转角检测装置

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EP1498911A1 (de) * 2003-07-15 2005-01-19 Robert Bosch Gmbh Ringmagnet

Also Published As

Publication number Publication date
JP2015503321A (ja) 2015-01-29
WO2013092653A3 (de) 2014-06-19
EP2795772A2 (de) 2014-10-29
US9882456B2 (en) 2018-01-30
CN104040852A (zh) 2014-09-10
JP6066128B2 (ja) 2017-01-25
US20140361644A1 (en) 2014-12-11
WO2013092653A2 (de) 2013-06-27
DE102011089243A1 (de) 2013-06-20
KR20140117357A (ko) 2014-10-07

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