JP2021012918A - Magnetization yoke - Google Patents

Magnetization yoke Download PDF

Info

Publication number
JP2021012918A
JP2021012918A JP2019125400A JP2019125400A JP2021012918A JP 2021012918 A JP2021012918 A JP 2021012918A JP 2019125400 A JP2019125400 A JP 2019125400A JP 2019125400 A JP2019125400 A JP 2019125400A JP 2021012918 A JP2021012918 A JP 2021012918A
Authority
JP
Japan
Prior art keywords
winding
iron core
yoke
support portion
winding support
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.)
Granted
Application number
JP2019125400A
Other languages
Japanese (ja)
Other versions
JP7026082B2 (en
Inventor
稔 横溝
Minoru Yokomizo
横溝　　稔
皇介 一井
Kosuke Ichii
皇介 一井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denshijiki Industry Co Ltd
Original Assignee
Denshijiki Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denshijiki Industry Co Ltd filed Critical Denshijiki Industry Co Ltd
Priority to JP2019125400A priority Critical patent/JP7026082B2/en
Publication of JP2021012918A publication Critical patent/JP2021012918A/en
Application granted granted Critical
Publication of JP7026082B2 publication Critical patent/JP7026082B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

To provide a more durable magnetization yoke.SOLUTION: A magnetization yoke according to the present invention includes a winding 21, an iron core in which a hole that accommodates the winding and a teeth 13 around which the winding is wound are alternately formed in the circumferential direction, a resin filled and molded around the iron core and the winding, and a winding support portion 131 provided in a space between a bent portion of the winding and the iron core and supporting the winding.SELECTED DRAWING: Figure 3

Description

本発明は、磁石を着磁する着磁装置に用いられる着磁ヨークに関する。 The present invention relates to a magnetizing yoke used in a magnetizing device that magnetizes a magnet.

磁石を着磁する着磁装置の一例として、鉄心に巻線が巻かれている着磁ヨークを着磁すべき磁石に近接配置し、その巻線にパルス電流を流すことによって、着磁ヨークに強い磁場を発生させて、磁石に磁界を印加して、磁石を着磁する着磁装置が公知である。このような着磁装置に用いられる着磁ヨークは、極めて大きなパルス電流が繰り返し巻線に流れるため、巻線の被覆に熱的劣化が生じやすい。さらに着磁ヨークの巻線は、電流が流れるときに一方向の力が作用し、電流が遮断されると逆方向の力が作用するため、パルス電流を流す度に被覆の機械的劣化も生ずる。そのため着磁ヨークの故障は、着磁を繰り返すことによって巻線の被覆が徐々に劣化し、最終的に巻線の被覆が絶縁破壊して短絡故障するに至る場合が多い。 As an example of a magnetizing device that magnetizes a magnet, a magnetizing yoke having a winding wound around an iron core is placed close to the magnet to be magnetized, and a pulse current is passed through the winding to make the magnetizing yoke. A magnetizing device that generates a strong magnetic field and applies a magnetic field to the magnet to magnetize the magnet is known. In the magnetizing yoke used in such a magnetizing device, an extremely large pulse current flows repeatedly through the winding, so that the coating of the winding is liable to be thermally deteriorated. Furthermore, in the winding of the magnetized yoke, a force acts in one direction when a current flows, and a force acts in the opposite direction when the current is cut off, so that the coating mechanically deteriorates every time a pulse current is passed. .. Therefore, in many cases, the failure of the magnetizing yoke causes the coating of the winding to gradually deteriorate due to repeated magnetizing, and finally the coating of the winding breaks down to cause a short-circuit failure.

このような巻線の被覆の絶縁破壊に起因する故障を低減して着磁ヨークの耐久性を向上させる従来技術の一例として、鉄心及び巻線の周囲にエポキシ樹脂等の樹脂を充填して成形した着磁ヨークが公知である（例えば特許文献１を参照）。このような構成の着磁ヨークによれば、パルス電流が流れるときに巻線に作用する力が樹脂によって緩和されるので、巻線の被覆の機械的劣化を低減することができる。さらに鉄心及び巻線の周囲に形成された樹脂が巻線に作用する力によって破損する虞を低減するために、樹脂に接する端面板に凹凸を設けた着磁ヨークが公知である（例えば特許文献１を参照）。 As an example of the conventional technique for reducing the failure caused by the dielectric breakdown of the winding coating and improving the durability of the magnetized yoke, the iron core and the circumference of the winding are filled with a resin such as epoxy resin for molding. The magnetized yoke is known (see, for example, Patent Document 1). According to the magnetizing yoke having such a configuration, the force acting on the winding when the pulse current flows is relaxed by the resin, so that the mechanical deterioration of the winding coating can be reduced. Further, in order to reduce the possibility that the resin formed around the iron core and the winding will be damaged by the force acting on the winding, a magnetized yoke having irregularities on the end face plate in contact with the resin is known (for example, Patent Document). 1).

特開２０１４−０９６８９７号公報Japanese Unexamined Patent Publication No. 2014-096897

近年、例えば電気自動車のモータのロータ（回転子）等、より大きくて強力な磁石を着磁できる着磁ヨークの必要性が高まりつつある。このような着磁ヨークにおいては、より大きなパルス電流を巻線に流す必要があるため、パルス電流が流れるときに巻線に作用する力がより大きくなり、それによって鉄心及び巻線の周囲に充填成形された樹脂により大きな力が作用することになる。またこのような着磁ヨークにおいては、より大きな電流を巻線に流す必要があることから、必然的により太い巻線が必要になる。そして巻線が太くなると、小さな曲げ半径で巻くことが困難になるため、巻線の曲げ半径が必然的に大きくなり、それによって巻線の屈曲部と鉄心との間に空間が生じやすくなる。巻線の屈曲部（特に巻線の屈曲部と直線部分との境界部分）は、最も大きな力が作用する。そのため巻線の屈曲部と鉄心との間の空間が大きくなると、鉄心及び巻線の周囲に充填成形された樹脂だけでは、パルス電流を流したときに巻線に作用する力を抑制することが難しくなってくる。 In recent years, there has been an increasing need for a magnetizing yoke capable of magnetizing a larger and stronger magnet, such as a rotor (rotor) of a motor of an electric vehicle. In such a magnetized yoke, a larger pulse current needs to flow through the winding, so the force acting on the winding when the pulse current flows is greater, thereby filling the iron core and around the winding. A large force acts on the molded resin. Further, in such a magnetized yoke, a thicker winding is inevitably required because a larger current needs to be passed through the winding. When the winding becomes thicker, it becomes difficult to wind the winding with a small bending radius, so that the bending radius of the winding inevitably increases, which tends to create a space between the bent portion of the winding and the iron core. The greatest force acts on the bent portion of the winding (particularly the boundary portion between the bent portion of the winding and the straight portion). Therefore, when the space between the bent portion of the winding and the iron core becomes large, the force acting on the winding when a pulse current is passed can be suppressed only by the resin filled and molded around the iron core and the winding. It gets harder.

このようなことから鉄心及び巻線の周囲に樹脂を充填して成形するだけでは、より大きくて強力な磁石を着磁できる着磁ヨークを構成する上で、巻線の被覆の劣化を十分に抑制することができず、実用的な耐久性が得られない虞が生ずる。さらに巻線の屈曲部と鉄心との間の空間は、狭いため、樹脂が充填されにくい場合がある。そのため従来の着磁ヨークは、樹脂が充填されていない状態になる虞があり、それによって耐久性が大きく低下してしまう虞もある。 For this reason, simply filling the iron core and the circumference of the winding with resin and molding it will sufficiently deteriorate the coating of the winding in constructing a magnetizing yoke that can magnetize a larger and stronger magnet. It cannot be suppressed, and there is a risk that practical durability cannot be obtained. Further, since the space between the bent portion of the winding and the iron core is narrow, it may be difficult to fill the resin. Therefore, the conventional magnetized yoke may be in a state where the resin is not filled, which may greatly reduce the durability.

このような状況に鑑み本発明はなされたものであり、その目的は、より耐久性が高い着磁ヨークを提供することにある。 The present invention has been made in view of such a situation, and an object of the present invention is to provide a magnetized yoke having higher durability.

＜本発明の第１の態様＞
本発明の第１の態様は、巻線と、前記巻線を収容する孔、及び前記巻線が巻かれるティースが交互に周方向に形成された鉄心と、前記鉄心及び前記巻線の周囲に充填されて成形されている樹脂と、前記巻線の屈曲部と前記鉄心との間の空間に設けられ、前記巻線を支持する巻線支持部と、を備える着磁ヨークである。 <First aspect of the present invention>
In the first aspect of the present invention, the winding, the hole for accommodating the winding, the iron core in which the teeth around which the winding is wound are alternately formed in the circumferential direction, and around the iron core and the winding. A magnetized yoke including a resin that is filled and molded, and a winding support portion that is provided in a space between the bent portion of the winding and the iron core and supports the winding.

本発明の第１の態様によれば、巻線にパルス電流を流したときに最も大きな力が作用する巻線の屈曲部の動きを巻線支持部で抑制することができるので、特に巻線の被覆の絶縁破壊が生じやすい巻線の屈曲部の機械的劣化を効果的に抑制することができる。また着磁する磁石の形状等に応じて最適な着磁ができるように鉄心の形状等を設計する上で、鉄心の形状等に何ら制約は生じない。したがって本発明の第１の態様によれば、着磁効率を低下させることなく、より耐久性が高い着磁ヨークを提供できるという作用効果が得られる。 According to the first aspect of the present invention, the movement of the bent portion of the winding on which the largest force acts when a pulse current is passed through the winding can be suppressed by the winding supporting portion, and thus the winding in particular. It is possible to effectively suppress the mechanical deterioration of the bent portion of the winding where the dielectric breakdown of the coating is likely to occur. Further, in designing the shape of the iron core or the like so that the magnetism can be optimally magnetized according to the shape of the magnet to be magnetized, there are no restrictions on the shape of the iron core or the like. Therefore, according to the first aspect of the present invention, there is an effect that a magnetizing yoke having higher durability can be provided without lowering the magnetizing efficiency.

＜本発明の第２の態様＞
本発明の第２の態様は、前述した本発明の第１の態様において、前記巻線支持部は、前記樹脂よりも強度が高い材料で形成されている、着磁ヨークである。
本発明の第２の態様によれば、巻線にパルス電流を流したときに最も大きな力が作用する巻線の屈曲部の動きをより高い強度で効果的に抑制することができるので、さらに耐久性を向上させることができる。 <Second aspect of the present invention>
A second aspect of the present invention is a magnetized yoke in which the winding support portion is made of a material having a strength higher than that of the resin in the first aspect of the present invention described above.
According to the second aspect of the present invention, the movement of the bent portion of the winding, in which the largest force acts when a pulse current is passed through the winding, can be effectively suppressed with higher strength. Durability can be improved.

＜本発明の第３の態様＞
本発明の第３の態様は、前述した本発明の第１の態様又は第２の態様において、前記巻線支持部は、絶縁体で形成されている、着磁ヨークである。
本発明の第３の態様によれば、巻線支持部材で渦電流損が生じないので、渦電流損に起因して着磁効率が低下する虞を低減することができる。 <Third aspect of the present invention>
A third aspect of the present invention is, in the first aspect or the second aspect of the present invention described above, the winding support portion is a magnetized yoke formed of an insulator.
According to the third aspect of the present invention, since the eddy current loss does not occur in the winding support member, it is possible to reduce the possibility that the magnetizing efficiency is lowered due to the eddy current loss.

＜本発明の第４の態様＞
本発明の第４の態様は、前述した本発明の第１態様において、前記巻線支持部は、前記鉄心の一部である。
本発明の第４の態様によれば、巻線支持部と鉄心とを共通の材料で構成できるため、着磁ヨークの製造コストの低減を図ることができる。 <Fourth aspect of the present invention>
In the fourth aspect of the present invention, in the first aspect of the present invention described above, the winding support portion is a part of the iron core.
According to the fourth aspect of the present invention, since the winding support portion and the iron core can be made of a common material, the manufacturing cost of the magnetized yoke can be reduced.

＜本発明の第５の態様＞
本発明の第５の態様は、前述した本発明の第１〜第４の態様のいずれかにおいて、前記巻線支持部は、前記巻線の屈曲部の内周面に接する接触部分が、前記巻線の屈曲部の内周面に沿う曲面形状になっている、着磁ヨークである。
本発明の第５の態様によれば、巻線の屈曲部の内周面が巻線支持部材に点接触ではなく面接触することになるので、巻線の屈曲部と巻線支持部材とが接する部分に作用する力が分散される。それによって巻線の屈曲部の機械的劣化をさらに効果的に抑制することができるので、さらに耐久性を向上させることができる。 <Fifth aspect of the present invention>
A fifth aspect of the present invention is that in any one of the first to fourth aspects of the present invention described above, the winding support portion has a contact portion in contact with the inner peripheral surface of the bent portion of the winding. A magnetizing yoke that has a curved shape along the inner peripheral surface of the bent portion of the winding.
According to the fifth aspect of the present invention, the inner peripheral surface of the bent portion of the winding is in surface contact with the winding support member instead of point contact, so that the bent portion of the winding and the winding support member are in surface contact with each other. The force acting on the contacting part is dispersed. As a result, mechanical deterioration of the bent portion of the winding can be suppressed more effectively, so that the durability can be further improved.

＜本発明の第６の態様＞
発明の第６の態様は、前述した本発明の第５態様において、前記巻線支持部の前記接触部分に内接又は外接する仮想円の中心から前記巻線支持部の前記接触部分の中心までの線分と、前記仮想円の中心を通り且つ前記ティースの前面に平行な線分とのなす角が４０度以上５０度以下である。
本発明の第６の態様によれば、巻線の振動に伴う、巻線と巻線支持部との摺動を小さな角度範囲に収めることが可能となる。更には、巻線と巻線支持部との間に樹脂を充填するスペースを確保することが可能になり、巻線に作用する力の緩和及び巻線の被覆の機械的劣化を低減することができる。 <Sixth Aspect of the Present Invention>
A sixth aspect of the present invention is, in the fifth aspect of the present invention described above, from the center of the virtual circle inscribed or circumscribed to the contact portion of the winding support portion to the center of the contact portion of the winding support portion. The angle between the line segment of No. 1 and the line segment passing through the center of the virtual circle and parallel to the front surface of the tooth is 40 degrees or more and 50 degrees or less.
According to the sixth aspect of the present invention, it is possible to keep the sliding between the winding and the winding support portion within a small angle range due to the vibration of the winding. Furthermore, it is possible to secure a space for filling the resin between the winding and the winding support portion, and it is possible to alleviate the force acting on the winding and reduce the mechanical deterioration of the winding coating. it can.

本発明によれば、より耐久性が高い着磁ヨークを提供することができる。 According to the present invention, it is possible to provide a magnetized yoke having higher durability.

本発明に係る着磁ヨークの要部を図示した正面図。The front view which illustrated the main part of the magnetizing yoke which concerns on this invention. 本発明に係る着磁ヨークの巻線の結線図。The wiring diagram of the winding of the magnetizing yoke which concerns on this invention. 第１実施例の着磁ヨークの一部を拡大図示した要部断面図。FIG. 5 is an enlarged sectional view of a main part of a magnetized yoke of the first embodiment. 第２実施例の着磁ヨークの一部を拡大図示した要部断面図。FIG. 5 is a cross-sectional view of a main part which is an enlarged view of a part of the magnetizing yoke of the second embodiment. 第３実施例の着磁ヨークの一部を拡大図示した要部断面図。FIG. 5 is a cross-sectional view of a main part which is an enlarged view of a part of the magnetizing yoke of the third embodiment.

以下、本発明の実施の形態について図面を参照しながら説明する。
尚、本発明は、以下説明する実施例に特に限定されるものではなく、特許請求の範囲に記載された発明の範囲内で種々の変形が可能であることは言うまでもない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
It goes without saying that the present invention is not particularly limited to the examples described below, and various modifications can be made within the scope of the invention described in the claims.

図１は、本発明に係る着磁ヨークの要部を図示した正面図である。図２は、本発明に係る着磁ヨークの巻線２１の結線図である。 FIG. 1 is a front view showing a main part of a magnetizing yoke according to the present invention. FIG. 2 is a wiring diagram of the winding 21 of the magnetizing yoke according to the present invention.

本発明に係る着磁ヨークは、鉄心である着磁ヨーク本体１０、巻線２１、樹脂２２を備える。本発明に係る着磁ヨークは、巻線２１にパルス電流を流すことによって強い磁場を発生させ、ワーク３０の磁石に磁界を印加して着磁する着磁装置に用いられる。 The magnetizing yoke according to the present invention includes a magnetizing yoke main body 10, a winding 21, and a resin 22, which are iron cores. The magnetizing yoke according to the present invention is used in a magnetizing device that generates a strong magnetic field by passing a pulse current through the winding 21 and applies a magnetic field to the magnet of the work 30 to magnetize the magnet.

着磁ヨーク本体１０は、着磁するワーク３０が配置される円形の貫通孔１１を有する円筒形状をなしている。ワーク３０は、例えばモータのロータ（回転子）である。着磁ヨーク本体１０は、その周方向に等間隔で交互に形成された複数のスロット１２及び複数のティース１３を含む。複数のスロット１２は、巻線２１が収容される孔であり、着磁ヨーク本体１０の軸方向に貫通する貫通孔である。複数のティース１３は、巻線２１が巻かれる部分であり、ワーク３０の磁石に一対一で対応するように形成されている。着磁ヨーク本体１０の大きさや形状、貫通孔１１の大きさや形状、スロット１２及びティース１３の位置、大きさ、形状は、ワーク３０の磁石（図示省略）を最も効率良く着磁できるように（磁石に対して磁束が垂直に入るように）、ワーク３０の磁石の位置、大きさ、形状等に応じて設定される。 The magnetizing yoke main body 10 has a cylindrical shape having a circular through hole 11 in which the magnetizing work 30 is arranged. The work 30 is, for example, a rotor (rotor) of a motor. The magnetizing yoke main body 10 includes a plurality of slots 12 and a plurality of teeth 13 formed alternately at equal intervals in the circumferential direction thereof. The plurality of slots 12 are holes in which the windings 21 are housed, and are through holes that penetrate the magnetized yoke body 10 in the axial direction. The plurality of teeth 13 are portions around which the winding 21 is wound, and are formed so as to have a one-to-one correspondence with the magnet of the work 30. The size and shape of the magnetizing yoke body 10, the size and shape of the through hole 11, and the positions, sizes, and shapes of the slots 12 and teeth 13 are set so that the magnet of the work 30 (not shown) can be magnetized most efficiently (not shown). It is set according to the position, size, shape, etc. of the magnet of the work 30 so that the magnetic flux enters perpendicularly to the magnet).

巻線２１は、絶縁被覆が施された電線である。複数のスロット１２を通じて複数のティース１３に巻かれた巻線２１は、直列に接続されるとともに、複数のティース１３にＮ極の磁界とＳ極の磁界が交互に発生するように、交互に逆の巻き方向で複数のティース１３に巻かれている。巻線２１の両端には、パルス電流を発生する電源装置（図示せず）が接続される。巻線２１の電線の太さ、被覆の材質や厚み等は、例えば必要とされる着磁力や巻線２１に流れるパルス電流の大きさ等に応じて設定される。また各ティース１３における巻線２１の巻数は、巻線２１に流れるパルス電流の通電時間やピーク電流値等に応じて設定される。
尚、図示していないが、隣接する巻線２１の間や巻線２１とスロット１２との間には、絶縁性を有する材料でシート状に形成された絶縁紙等を設けるのが好ましい。 The winding 21 is an electric wire with an insulating coating. The windings 21 wound around the plurality of teeth 13 through the plurality of slots 12 are connected in series, and are alternately reversed so that the N-pole magnetic field and the S-pole magnetic field are alternately generated in the plurality of teeth 13. It is wound around a plurality of teeth 13 in the winding direction of. A power supply device (not shown) that generates a pulse current is connected to both ends of the winding 21. The thickness of the electric wire of the winding 21 and the material and thickness of the coating are set according to, for example, the required magnetic force and the magnitude of the pulse current flowing through the winding 21. The number of turns of the winding 21 in each tooth 13 is set according to the energization time of the pulse current flowing through the winding 21, the peak current value, and the like.
Although not shown, it is preferable to provide a sheet-like insulating paper or the like made of an insulating material between the adjacent windings 21 and between the windings 21 and the slot 12.

樹脂２２は、例えばエポキシ系樹脂であり、着磁ヨーク本体１０及び巻線２１の周囲に充填されて成形されている。樹脂２２が充填されて成形された後の着磁ヨークは、巻線２１及び着磁ヨーク本体１０の大部分が樹脂２２で覆われた状態になる。樹脂２２の強度（例えば引張強度等）は、高すぎるとクラックが生じやすくなり、低すぎると巻線２１に作用する力を抑制できない。つまり樹脂２２の強度は、着磁ヨークの仕様等に応じて適切に設定される。 The resin 22 is, for example, an epoxy resin, and is formed by filling around the magnetizing yoke main body 10 and the winding 21. After the resin 22 is filled and molded, the magnetized yoke is in a state where most of the winding 21 and the magnetized yoke main body 10 are covered with the resin 22. If the strength of the resin 22 (for example, tensile strength) is too high, cracks are likely to occur, and if it is too low, the force acting on the winding 21 cannot be suppressed. That is, the strength of the resin 22 is appropriately set according to the specifications of the magnetizing yoke and the like.

＜第１実施例＞
図３は、第１実施例の本発明に係る着磁ヨークの一部を拡大図示した要部断面図である。 <First Example>
FIG. 3 is an enlarged sectional view of a main part of the magnetized yoke according to the present invention of the first embodiment.

本発明に係る着磁ヨークは、さらに巻線２１を支持する巻線支持部として機能する巻線支持部材２３を備える。巻線支持部材２３は、巻線２１の屈曲部２１１とティース１３との間の空間２１２に設けられている。巻線２１の屈曲部２１１は、図示の如く、巻線２１のＵ字形状に屈曲されている部分である。巻線支持部材２３は、例えば一定の厚みを有する板状の部材であり、絶縁体で形成されている。より具体的には巻線支持部材２３は、例えばベーク材（フェノール樹脂）やＭＣナイロン（登録商標）等のポリアミド系樹脂で形成されており、複数のティース１３のそれぞれに設けられている。巻線支持部材２３は、各ティース１３の前面１３１及び後面にそれぞれ設けられている。さらに巻線２１とティース１３との間、及び巻線２１と巻線支持部材２３との間の隙間には、絶縁性を有する材料で形成されたシート状の部材である絶縁紙２４が設けられている。 The magnetized yoke according to the present invention further includes a winding support member 23 that functions as a winding support portion that supports the winding 21. The winding support member 23 is provided in the space 212 between the bent portion 211 of the winding 21 and the teeth 13. As shown in the figure, the bent portion 211 of the winding 21 is a portion of the winding 21 that is bent in a U shape. The winding support member 23 is, for example, a plate-shaped member having a certain thickness, and is formed of an insulator. More specifically, the winding support member 23 is made of a polyamide resin such as a baking material (phenolic resin) or MC nylon (registered trademark), and is provided on each of the plurality of teeth 13. The winding support member 23 is provided on the front surface 131 and the rear surface of each tooth 13. Further, in the gap between the winding 21 and the teeth 13 and between the winding 21 and the winding support member 23, an insulating paper 24 which is a sheet-like member made of an insulating material is provided. ing.

このように巻線２１の屈曲部２１１とティース１３との間の空間２１２に巻線支持部材２３を設けることで、巻線２１にパルス電流を流したときに最も大きな力が作用する巻線２１の屈曲部２１１の動きを巻線支持部材２３で抑制することができる。それによって特に絶縁破壊が生じやすい巻線２１の屈曲部２１１の劣化を効果的に抑制することができる。また着磁するワーク３０の形状等に応じて最適な着磁ができるように着磁ヨーク本体１０の形状等を設計する上で、着磁ヨーク本体１０の形状等に何ら制約は生じない。したがって本発明によれば、着磁効率を低下させることなく、より耐久性が高い着磁ヨークを提供することができる。 By providing the winding support member 23 in the space 212 between the bent portion 211 and the teeth 13 of the winding 21 in this way, the winding 21 on which the largest force acts when a pulse current is passed through the winding 21. The movement of the bent portion 211 can be suppressed by the winding support member 23. As a result, deterioration of the bent portion 211 of the winding 21, which is particularly prone to dielectric breakdown, can be effectively suppressed. Further, in designing the shape and the like of the magnetizing yoke main body 10 so that the optimum magnetizing can be performed according to the shape and the like of the work 30 to be magnetized, there is no restriction on the shape and the like of the magnetizing yoke main body 10. Therefore, according to the present invention, it is possible to provide a magnetizing yoke having higher durability without lowering the magnetizing efficiency.

巻線支持部材２３は、樹脂２２よりも強度（例えば引張強度等）が高い材料で形成されているのが好ましい。それによって巻線２１にパルス電流を流したときに最も大きな力が作用する巻線２１の屈曲部２１１の動きをより高い強度で効果的に抑制することができるので、着磁ヨークの耐久性をさらに向上させることができる。また巻線支持部材２３の材料は、例えば非磁性体でもよいが、金属を用いると渦電流が流れて発熱し、損失（渦電流損）が生ずる。そのため巻線支持部材２３は、絶縁体で形成されているのが好ましく、それによって渦電流損に起因して着磁効率が低下する虞を低減することができる。 The winding support member 23 is preferably made of a material having a strength (for example, tensile strength) higher than that of the resin 22. As a result, the movement of the bent portion 211 of the winding 21 on which the largest force acts when a pulse current is passed through the winding 21 can be effectively suppressed with higher strength, so that the durability of the magnetized yoke can be improved. It can be further improved. The material of the winding support member 23 may be, for example, a non-magnetic material, but if a metal is used, an eddy current flows to generate heat, and a loss (eddy current loss) occurs. Therefore, the winding support member 23 is preferably formed of an insulator, which can reduce the possibility that the magnetizing efficiency is lowered due to the eddy current loss.

さらに巻線支持部材２３は、図示の如く、巻線２１の屈曲部２１１の内周面に接する接触部分２３１が、巻線２１の屈曲部２１１の内周面に沿う曲面形状になっているのが好ましい。例えば巻線２１の屈曲部２１１の曲げ半径は、その巻線２１の太さに応じて決まってくる。そして巻線支持部材２３の形状は、例えば巻線２１の屈曲部２１１の曲げ半径に応じて適切な曲面形状に設定される。このような形状に巻線支持部材２３を形成することで、巻線２１の屈曲部２１１の内周面が巻線支持部材２３に点接触ではなく面接触することになり、巻線２１の屈曲部２１１と巻線支持部材２３とが接する部分に作用する力が分散される。それによって巻線２１の屈曲部２１１の劣化をさらに効果的に抑制することができるので、さらに耐久性を向上させることができる。 Further, as shown in the drawing, the winding support member 23 has a curved surface shape in which the contact portion 231 in contact with the inner peripheral surface of the bent portion 211 of the winding 21 is along the inner peripheral surface of the bent portion 211 of the winding 21. Is preferable. For example, the bending radius of the bent portion 211 of the winding 21 is determined according to the thickness of the winding 21. The shape of the winding support member 23 is set to an appropriate curved surface shape according to, for example, the bending radius of the bent portion 211 of the winding 21. By forming the winding support member 23 in such a shape, the inner peripheral surface of the bent portion 211 of the winding 21 comes into surface contact with the winding support member 23 instead of point contact, and the winding 21 is bent. The force acting on the portion where the portion 211 and the winding support member 23 are in contact with each other is dispersed. As a result, deterioration of the bent portion 211 of the winding 21 can be suppressed more effectively, so that the durability can be further improved.

そして、巻線支持部材２３の接触部分２３１に外接する仮想円Ｓの中心Ｏから巻線支持部材２３の接触部分２３１の中心Ｍまでの線分Ｌ１と、仮想円Ｓの中心Ｏを通り且つティース１３の前面１３１と平行な線分Ｌ２とのなす角が４０度以上５０度以下であることが好ましい。特に、当該なす角が４５度となることがより好ましい。これにより、巻線２１の振動に伴う、巻線２１と巻線支持部材２３１との摺動を小さな角度範囲に収めることが可能となる。更には、巻線２１と巻線支持部材２３１との間に樹脂を充填するスペースを確保することが可能になり、巻線２１に作用する力の緩和及び巻線２１の被覆の機械的劣化を低減することができる。 Then, the line segment L1 from the center O of the virtual circle S circumscribing the contact portion 231 of the winding support member 23 to the center M of the contact portion 231 of the winding support member 23 and the teeth passing through the center O of the virtual circle S and teeth. It is preferable that the angle formed by the line segment L2 parallel to the front surface 131 of 13 is 40 degrees or more and 50 degrees or less. In particular, it is more preferable that the formed angle is 45 degrees. This makes it possible to keep the sliding between the winding 21 and the winding support member 231 due to the vibration of the winding 21 within a small angle range. Further, it becomes possible to secure a space for filling the resin between the winding 21 and the winding support member 231 to alleviate the force acting on the winding 21 and mechanically deteriorate the coating of the winding 21. It can be reduced.

なお、仮想円Ｏは、巻線支持部材２３の接触部分２３１に外接する円のみならず、内接する円であってもよい。このような仮想円Ｏが内接する場合であっても、線分Ｌ１の長さが変わり、且つ線分Ｌ２の位置が平行に偏移するだけであるため、上記なす角は同一となる。 The virtual circle O may be a circle inscribed as well as a circle circumscribed in the contact portion 231 of the winding support member 23. Even when such a virtual circle O is inscribed, the length of the line segment L1 changes and the position of the line segment L2 only shifts in parallel, so that the angles formed are the same.

＜第２実施例＞
図４は、第２実施例の本発明に係る着磁ヨークの一部を拡大図示した要部断面図である。
第２実施例の着磁ヨークは、巻線支持部材２３が金属で形成されている点で第１実施例と相違している。それ以外の構成については、第１実施例と同様であるため詳細な説明を省略する。このように本発明に係る着磁ヨークは、巻線支持部材２３を金属で形成することも可能であり、このような態様においても本発明による作用効果が得られる。 <Second Example>
FIG. 4 is an enlarged cross-sectional view of a part of the magnetizing yoke according to the present invention of the second embodiment.
The magnetized yoke of the second embodiment is different from that of the first embodiment in that the winding support member 23 is made of metal. Since the other configurations are the same as those in the first embodiment, detailed description thereof will be omitted. As described above, in the magnetized yoke according to the present invention, the winding support member 23 can be made of metal, and the effect of the present invention can be obtained even in such an embodiment.

＜第３実施例＞
図５は、第３実施例の本発明に係る着磁ヨークの一部を拡大図示した要部断面図である。
第３実施例の着磁ヨークは、第１実施例の巻線支持部材２３は設けられておらず、巻線２１の屈曲部２１１とティース１３との間の空間２１２で巻線２１を支持する巻線支持部１３１がティース１３に形成されている。すなわち、巻線支持部１３１は、鉄心である着磁ヨーク本体１０（ティース１３）の一部として形成されている。巻線支持部１３１は、各ティース１３の前面及び後面にそれぞれ設けられている。さらに巻線２１とティース１３との間の隙間には、絶縁性を有する材料で形成されたシート状の部材である絶縁紙２４が設けられている。上記以外の構成については、第１実施例と同様であるため詳細な説明を省略する。 <Third Example>
FIG. 5 is an enlarged cross-sectional view of a part of the magnetizing yoke according to the present invention of the third embodiment.
The magnetizing yoke of the third embodiment is not provided with the winding support member 23 of the first embodiment, and supports the winding 21 in the space 212 between the bent portion 211 of the winding 21 and the teeth 13. The winding support portion 131 is formed on the teeth 13. That is, the winding support portion 131 is formed as a part of the magnetized yoke main body 10 (teeth 13) which is an iron core. The winding support portion 131 is provided on the front surface and the rear surface of each tooth 13. Further, in the gap between the winding 21 and the teeth 13, an insulating paper 24, which is a sheet-like member made of an insulating material, is provided. Since the configurations other than the above are the same as those in the first embodiment, detailed description thereof will be omitted.

このように巻線２１の屈曲部２１１とティース１３との間の空間２１２で巻線２１を支持する巻線支持部１３１をティース１３に形成することで、巻線２１にパルス電流を流したときに最も大きな力が作用する巻線２１の屈曲部２１１の動きを巻線支持部１３１で抑制することができる。それによって第３実施例の着磁ヨークは、特に絶縁破壊が生じやすい巻線２１の屈曲部２１１の劣化を効果的に抑制することができるので、第１実施例と同様に、より耐久性が高い着磁ヨークを提供することができる。さらに第３実施例の着磁ヨークは、巻線２１の屈曲部２１１とティース１３との間の空間２１２で巻線２１を支持する巻線支持部１３１がティース１３の一部で形成されているので、例えば巻線２１の屈曲部２１１とティース１３との間の空間２１２が狭く、その間に第１実施例の巻線支持部材２３を挿入することが困難な場合でも、より耐久性が高い着磁ヨークを提供できる。 When the winding support portion 131 that supports the winding 21 is formed in the teeth 13 in the space 212 between the bent portion 211 and the teeth 13 of the winding 21 in this way, a pulse current is passed through the winding 21. The movement of the bent portion 211 of the winding 21 on which the largest force acts can be suppressed by the winding support portion 131. As a result, the magnetized yoke of the third embodiment can effectively suppress the deterioration of the bent portion 211 of the winding 21 which is particularly prone to dielectric breakdown, and thus has more durability as in the first embodiment. A high magnetizing yoke can be provided. Further, in the magnetized yoke of the third embodiment, the winding support portion 131 that supports the winding 21 in the space 212 between the bent portion 211 of the winding 21 and the teeth 13 is formed as a part of the teeth 13. Therefore, for example, even when the space 212 between the bent portion 211 of the winding 21 and the teeth 13 is narrow and it is difficult to insert the winding support member 23 of the first embodiment between them, the wearing is more durable. A magnetic yoke can be provided.

さらに第３実施例の巻線支持部１３１は、図示の如く、巻線２１の屈曲部２１１の内周面に接する接触部分１３２が、巻線２１の屈曲部２１１の内周面に沿う曲面形状になっているのが好ましい。例えば巻線２１の屈曲部２１１の曲げ半径は、その巻線２１の太さに応じて決まってくる。そして巻線支持部１３１の形状は、例えば巻線２１の屈曲部２１１の曲げ半径に応じて適切な曲面形状に設定される。このような形状に巻線支持部１３１を形成することで、巻線２１の屈曲部２１１の内周面が巻線支持部１３１に点接触ではなく面接触することになり、巻線２１の屈曲部２１１と巻線支持部１３１とが接する部分に作用する力が分散される。それによって巻線２１の屈曲部２１１の劣化をさらに効果的に抑制することができるので、さらに耐久性を向上させることができる。 Further, as shown in the drawing, the winding support portion 131 of the third embodiment has a curved surface shape in which the contact portion 132 in contact with the inner peripheral surface of the bent portion 211 of the winding 21 is along the inner peripheral surface of the bent portion 211 of the winding 21. It is preferable that it is. For example, the bending radius of the bent portion 211 of the winding 21 is determined according to the thickness of the winding 21. The shape of the winding support portion 131 is set to an appropriate curved surface shape according to, for example, the bending radius of the bent portion 211 of the winding 21. By forming the winding support portion 131 in such a shape, the inner peripheral surface of the bent portion 211 of the winding 21 comes into surface contact with the winding support portion 131 instead of point contact, and the winding 21 is bent. The force acting on the portion where the portion 211 and the winding support portion 131 are in contact with each other is dispersed. As a result, deterioration of the bent portion 211 of the winding 21 can be suppressed more effectively, so that the durability can be further improved.

また、第３実施例の巻線支持部１３１は、鉄心である着磁ヨーク本体１０の一部として形成されるため、巻線支持部１３１と着磁ヨーク本体１０との材料の共通化が図られ、着磁ヨーク自体の製造コストの低減が可能になる。 Further, since the winding support portion 131 of the third embodiment is formed as a part of the magnetized yoke main body 10 which is an iron core, the material of the winding support portion 131 and the magnetic yoke main body 10 can be standardized. Therefore, the manufacturing cost of the magnetizing yoke itself can be reduced.

なお、第３実施例においても、第１実施例と同様に、巻線支持部１３１の接触部分１３２に外接する仮想円（図示せず）の中心（図示せず）から巻線支持部１３１の接触部分１３２の中心（図示せず）までの線分（図示せず）と、当該仮想円の中心を通り且つティース１３の前面（巻線支持部１３１の前面）と平行な線分（図示せず）とのなす角が４０度以上５０度以下であることが好ましく、当該なす角が４５度となることがより好ましい。これにより、巻線２１の振動に伴う、巻線２１と巻線支持部１３１との摺動を小さな角度範囲に収めることが可能となる。更には、巻線２１と巻線支持部１３１との間に樹脂を充填するスペースを確保することが可能になり、巻線２１に作用する力の緩和及び巻線２１の被覆の機械的劣化を低減することができる。 In the third embodiment as well, as in the first embodiment, the winding support portion 131 extends from the center (not shown) of the virtual circle (not shown) circumscribing the contact portion 132 of the winding support portion 131. A line segment (not shown) to the center of the contact portion 132 (not shown) and a line segment passing through the center of the virtual circle and parallel to the front surface of the teeth 13 (front surface of the winding support portion 131) (not shown). The angle formed with the coil is preferably 40 degrees or more and 50 degrees or less, and more preferably the angle formed with the coil is 45 degrees. This makes it possible to keep the sliding between the winding 21 and the winding support portion 131 due to the vibration of the winding 21 within a small angle range. Further, it becomes possible to secure a space for filling the resin between the winding 21 and the winding support portion 131, alleviating the force acting on the winding 21 and mechanically deteriorating the coating of the winding 21. It can be reduced.

１０ 着磁ヨーク本体（鉄心）
１１ 貫通孔
１２ スロット
１３ ティース
１３１ 巻線支持部
２１ 巻線
２２ 樹脂
２３ 巻線支持部材
２４ 絶縁紙 10 Magnetized yoke body (iron core)
11 Through hole 12 Slot 13 Teeth 131 Winding support 21 Winding 22 Resin 23 Winding support member 24 Insulating paper

Claims (6)

巻線と、
前記巻線を収容する孔、及び前記巻線が巻かれるティースが交互に周方向に形成された鉄心と、
前記鉄心及び前記巻線の周囲に充填されて成形されている樹脂と、
前記巻線の屈曲部と前記鉄心との間の空間に設けられ、前記巻線を支持する巻線支持部と、を備える着磁ヨーク。 With windings
A hole for accommodating the winding and an iron core in which the teeth around which the winding is wound are alternately formed in the circumferential direction.
A resin filled and molded around the iron core and the winding
A magnetized yoke provided in a space between the bent portion of the winding and the iron core, and comprising a winding supporting portion that supports the winding. 請求項１に記載の着磁ヨークにおいて、前記巻線支持部は、前記樹脂よりも強度が高い材料で形成されている、着磁ヨーク。 In the magnetizing yoke according to claim 1, the winding support portion is made of a material having a strength higher than that of the resin. 請求項１又は２に記載の着磁ヨークにおいて、前記巻線支持部は、絶縁体で形成されている、着磁ヨーク。 The magnetizing yoke according to claim 1 or 2, wherein the winding support portion is formed of an insulator. 請求項１に記載の着磁ヨークにおいて、前記巻線支持部は、前記鉄心の一部である、着磁ヨーク。 In the magnetizing yoke according to claim 1, the winding support portion is a part of the iron core. 請求項１〜４のいずれか１項に記載の着磁ヨークにおいて、前記巻線支持部は、前記巻線の屈曲部の内周面に接する接触部分が、前記巻線の屈曲部の内周面に沿う曲面形状になっている、着磁ヨーク。 In the magnetized yoke according to any one of claims 1 to 4, the winding support portion has a contact portion in contact with the inner peripheral surface of the bent portion of the winding, and the contact portion is the inner circumference of the bent portion of the winding. A magnetized yoke that has a curved shape along the surface. 請求項５に記載の着磁ヨークにおいて、前記巻線支持部の前記接触部分に内接又は外接する仮想円の中心から前記巻線支持部の前記接触部分の中心までの線分と、前記仮想円の中心を通り且つ前記ティースの前面と平行な線分とのなす角が４０度以上５０度以下である、着磁ヨーク。 In the magnetizing yoke according to claim 5, a line segment from the center of a virtual circle inscribed or circumscribed to the contact portion of the winding support portion to the center of the contact portion of the winding support portion and the virtual. A magnetized yoke having an angle of 40 degrees or more and 50 degrees or less with a line segment passing through the center of a circle and parallel to the front surface of the tooth.
JP2019125400A 2019-07-04 2019-07-04 Magnetized yoke Active JP7026082B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019125400A JP7026082B2 (en) 2019-07-04 2019-07-04 Magnetized yoke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019125400A JP7026082B2 (en) 2019-07-04 2019-07-04 Magnetized yoke

Publications (2)

Publication Number Publication Date
JP2021012918A true JP2021012918A (en) 2021-02-04
JP7026082B2 JP7026082B2 (en) 2022-02-25

Family

ID=74227732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019125400A Active JP7026082B2 (en) 2019-07-04 2019-07-04 Magnetized yoke

Country Status (1)

Country Link
JP (1) JP7026082B2 (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051444A (en) * 1983-08-31 1985-03-22 Matsushita Electric Ind Co Ltd Manufacture of magnetized yoke
JPS61196504A (en) * 1985-02-26 1986-08-30 Ricoh Co Ltd Magnetic field generating device
JPH0585013U (en) * 1992-04-20 1993-11-16 鐘淵化学工業株式会社 Magnetizing yoke
JPH06290944A (en) * 1993-04-02 1994-10-18 Sankyo Seiki Mfg Co Ltd Magnetizing head
JPH08279415A (en) * 1995-04-06 1996-10-22 Daido Steel Co Ltd Yoke for multipolar magnetization
JP2000232757A (en) * 1999-02-10 2000-08-22 Toshiba Corp Magnetization method for motor for compressor
JP2003088027A (en) * 2001-09-13 2003-03-20 Moric Co Ltd Armature for rotating electric machine
JP2003319593A (en) * 2002-04-25 2003-11-07 Aichi Elec Co Stator of motor
JP2007215383A (en) * 2006-02-13 2007-08-23 Aichi Elec Co Electric motor
JP2014096897A (en) * 2012-11-08 2014-05-22 Honda Motor Co Ltd Magnetization yoke
JP2014161210A (en) * 2013-01-28 2014-09-04 Asmo Co Ltd Motor
JP2015220875A (en) * 2014-05-19 2015-12-07 三菱電機株式会社 Stator of rotary electric machine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051444A (en) * 1983-08-31 1985-03-22 Matsushita Electric Ind Co Ltd Manufacture of magnetized yoke
JPS61196504A (en) * 1985-02-26 1986-08-30 Ricoh Co Ltd Magnetic field generating device
JPH0585013U (en) * 1992-04-20 1993-11-16 鐘淵化学工業株式会社 Magnetizing yoke
JPH06290944A (en) * 1993-04-02 1994-10-18 Sankyo Seiki Mfg Co Ltd Magnetizing head
JPH08279415A (en) * 1995-04-06 1996-10-22 Daido Steel Co Ltd Yoke for multipolar magnetization
JP2000232757A (en) * 1999-02-10 2000-08-22 Toshiba Corp Magnetization method for motor for compressor
JP2003088027A (en) * 2001-09-13 2003-03-20 Moric Co Ltd Armature for rotating electric machine
JP2003319593A (en) * 2002-04-25 2003-11-07 Aichi Elec Co Stator of motor
JP2007215383A (en) * 2006-02-13 2007-08-23 Aichi Elec Co Electric motor
JP2014096897A (en) * 2012-11-08 2014-05-22 Honda Motor Co Ltd Magnetization yoke
JP2014161210A (en) * 2013-01-28 2014-09-04 Asmo Co Ltd Motor
JP2015220875A (en) * 2014-05-19 2015-12-07 三菱電機株式会社 Stator of rotary electric machine

Also Published As

Publication number Publication date
JP7026082B2 (en) 2022-02-25

Similar Documents

Publication Publication Date Title
JP5491484B2 (en) Switched reluctance motor
JP6083523B2 (en) Rotor and motor
US10122231B2 (en) Rotor and rotary electric machine
US20210234420A1 (en) Rotor, motor, fan, and air conditioner
US7474028B2 (en) Motor
JP6429992B2 (en) Permanent magnet embedded electric motor, blower and refrigeration air conditioner
JP2009273258A (en) Magnetic field element
JP2012228104A (en) Permanent magnet-embedded motor
JP6432016B2 (en) Rotating electrical machine
CN108462268B (en) Rotor of rotating electric machine
JP5332171B2 (en) Permanent magnet motor
JPWO2019203076A1 (en) Coil and motor using it
JP7299531B2 (en) rotor, motor
US12095325B2 (en) Stator and motor using same
JP2010193587A (en) Magnet magnetization device for rotors, and motor
JP2019187218A (en) Cylindrical linear motor
JPWO2018154943A1 (en) motor
JP7026082B2 (en) Magnetized yoke
JP2009254030A (en) Motor
JP2012019613A (en) Linear motor
JP2016201960A (en) Embedded magnet type motor
JP2019187226A (en) Cylindrical linear motor
Nishiyama et al. The study of highly demagnetization performance IPMSM under hot environments
JP2005269693A (en) Permanent magnet motor
JP5884464B2 (en) Rotating electric machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200507

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210324

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210518

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210804

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210930

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220119

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220214

R150 Certificate of patent or registration of utility model

Ref document number: 7026082

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150