JP3790509B2 - Rotating motor - Google Patents

Rotating motor Download PDF

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Publication number
JP3790509B2
JP3790509B2 JP2002289539A JP2002289539A JP3790509B2 JP 3790509 B2 JP3790509 B2 JP 3790509B2 JP 2002289539 A JP2002289539 A JP 2002289539A JP 2002289539 A JP2002289539 A JP 2002289539A JP 3790509 B2 JP3790509 B2 JP 3790509B2
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JP
Japan
Prior art keywords
bent
stator core
yoke
electric motor
rotary electric
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.)
Expired - Fee Related
Application number
JP2002289539A
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Japanese (ja)
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JP2004129370A (en
Inventor
昌也 本橋
昭 橋本
昭夫 松井
秀人 西村
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.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2002289539A priority Critical patent/JP3790509B2/en
Publication of JP2004129370A publication Critical patent/JP2004129370A/en
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Publication of JP3790509B2 publication Critical patent/JP3790509B2/en
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  • Windings For Motors And Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、例えば磁気ディスクや光ディスク駆動装置等に用いられる媒体回転駆動用の回転電動機に係り、特にステータコアの構造に関するものである。
【0002】
【従来の技術】
従来の回転電動機においては、一側に磁極テイース部を有する複数のヨーク部が、屈曲部を介して連結されたヨーク部材を所定の枚数積層一体化し、各ヨーク部の磁極テイース部にコイルを順次巻回して渡り部を介して接続した後、磁極テイース部が内側となるように屈曲部を屈曲させて環状とすることによりステータが構成されている(例えば、特許文献1参照)。
【0003】
【特許文献1】
特開平11−220844号公報(第6頁、第6図)。
【0004】
【発明が解決しようとする課題】
従来の回転電動機は、各ヨーク部の磁極テイース部にコイルを順次巻回して渡り部を介して接続した後、磁極テイース部が内側となるように屈曲部を屈曲させて環状とすることによりステータを構成しているので、屈曲部の屈曲前の状態と比較し、屈曲部を屈曲させて環状とした状態では、コイルの引出部間の距離、すなわち渡り部の延在距離が短くなるため、渡り部が弛み基板等へ搭載する際に、挟み込み等による断線、ショートが発生して信頼性が低下するという問題点があった。
【0005】
この発明は上記のような問題点を解消するためになされたもので、挟み込み等による断線、ショートの発生を防止して、信頼性の向上を図ることが可能な回転電動機を提供することを目的とするものである。
【0006】
【課題を解決するための手段】
この発明に係る回転電動機は、一側に磁極ティース部を有する複数のヨーク部が屈曲部を介して連結されたヨーク部材を所定の枚数積層し、磁極ティース部が内側となるように屈曲部を屈曲させて環状に形成されるステータコア、およびステータコアの各磁極ティース部にそれぞれ巻回されたコイルを有するステータを備え、各コイルが、引き出し側から渡り部を介して順次接続される回転電動機において、各ヨーク部の他側における屈曲部両端部にコイルの渡り部を引っ掛けて保持する一対の引っ掛け部が突出して形成され、一対の引っ掛け部は、ステータコアを環状にしたときにステータコアの中心から延びる放射方向から互いに反対方向に所定の角度変位するものである。
【0007】
【発明の実施の形態】
以下、この発明の実施の形態を図に基づいて説明する。
実施の形態1.
図1はこの発明の実施の形態1における回転電動機の構成を示す平面図、図2は図1における回転電動機のステータの要部の屈曲前の構成を示し、(A)は平面図、(B)は斜視図、図3は図1における回転電動機のステータの要部の屈曲後の構成を示し、(A)は平面図、(B)は斜視図、図4は図1における回転電動機のステータコアの構成を示す平面図、図5は図4におけるとは異なるステータコアの構成を示す平面図、図6は図4におけるとはさらに異なるステータコアの構成を示す平面図である。
【0008】
図において、回転電動機1はステータ2およびロータ3でなり、例えば基板4等に載置されている。そして、ステータ2は図4に示すように一側に3個の磁極テイース部5が、又、他側の後述の薄肉部と対向する両端部に一対の引っ掛け部6がそれぞれ形成された複数のヨーク部7が、屈曲部としての薄肉部8を介して連結されたヨーク部材9を、所定の板数積層して磁極テイース部5が内側となるように、薄肉部8を屈曲させて環状に形成されるステータコア10および、図2に示すように各ヨーク部7の3個の磁極テイース部5にそれぞれ同時に巻回され、渡り部11を介して順次接続される複数のコイル12により構成され、基板4上に固定して配置されている。
【0009】
そして、各渡り部11は引っ掛け部6のコイル12の引き出し側と積層方向に異なる側を通るように配置されており、図3に示すように薄肉部8が屈曲されると、一対の引っ掛け部6はそれぞれ、ステータコア10の中心から延びる放射方向に対して、お互いの方向に所定の角度だけ変位して傾き渡り部11を保持する。この時、渡り部11は保持された状態でヨーク部7の外周面に沿って引き渡される。又、ロータ3は回転軸13が基板4側に配置された軸受(図示せず)を介して回転自在に保持され、その外周面がステータの内周面、すなわち各磁極テイース部5の先端面との間に所定の間隙を介して配置されている。
【0010】
このように上記実施の形態1によれば、ヨーク部材9の各ヨーク部7の他側の薄肉部8と対向する両端部に、一対の引っ掛け部6を形成し、この引っ掛け部6にコイル12の渡り部11を引っ掛けるようにしているので、渡り部11は薄肉部8が屈曲される時点で、引っ掛け部6の変位によりヨーク部7の外周面に沿って引き渡され、渡り部11の弛みがなくなるため、挟み込み等による断線、ショートの発生を防止して、信頼性の向上を図ることが可能になる。
【0011】
なお、上記構成では、引っ掛け部6をピン状としたが、これに限定されるものではなく、図5に示すように先端にヨーク部7の中央側に折曲された折曲縁14を有する引っ掛け部15としても良く、折曲縁14を設けたことにより渡り部11の保持がより確実となり、さらに信頼性の向上を図ることができ、又、図6に示すように薄肉部8の屈曲前の時点で、すでに傾きを有する引っ掛け部16とすることにより、図5の場合と同様に渡り部11の保持がより確実となり、さらに信頼性の向上を図ることができる。
【0012】
実施の形態2.
図7はこの発明の実施の形態2における回転電機の要部の構成を示す平面図、図8は図7における回転電機のステータコアの屈曲される前の状態を示す平面図、図9は図7における回転電機のステータコアの屈曲された後の状態を示す平面図である。
図において、上記実施の形態1におけると同様な部分は同一符号を付して説明を省略する。
【0013】
この実施の形態2におけるステータコア10においては、図8に示すようにヨーク部7の他側の薄肉部8と対向する両端に形成される一対の引っ掛け部17の根元に段部18がそれぞれ形成されている。そして、この段部18は薄肉部8が屈曲されると、図9に示すように薄肉部8が形成された部位を含むヨーク部7の外周面より、半径方向外側に位置するように変位され、渡り部11はこの段部18に載っかかった状態で引っ掛け部17に保持されている。
【0014】
このように上記実施の形態2によれば、引っ掛け部17の根元に段部18を形成し、渡り部11がこの段部18に載っかかった状態で引っ掛け部17により保持しているので、図7に示すように渡り部11が薄肉部8と直接接触することがなくなり、薄肉部8に疲労破壊等による割れが生じた場合、この割れに渡り部11が接触して被覆の損傷が発生するのを防止することができるため、さらに信頼性の向上を図ることができる。
【0015】
実施の形態3.
図10はこの発明の実施の形態3における回転電機の要部の構成を示す斜視図である。
図において、上記実施の形態1におけると同様な部分は同一符号を付して説明を省略する。
この実施の形態3においては、コイル12の引き出し側の2枚のヨーク部材9のみに引っ掛け部6が形成されており、又、この引っ掛け部6の渡り部11と接する側には面打ち19が施されている。
【0016】
このように上記実施の形態3によれば、コイル12の引き出し側の2枚のヨーク部材9のみに引っ掛け部6が形成されているので、渡り部11を残りのヨーク部材9の外周面に沿って配置することができるため、渡り部11がステータコア10の側面より外方にはみ出すこともなくなり、ロータ(図示せず)等の回転部分と接触することが防止され、又、引っ掛け部6の渡り部11と接する側に面打ち19が施されているため、渡り部11が引っ掛け部6のコーナ部に接触して被覆が損傷したりするのが防止され、それぞれ信頼性の向上を図ることができる。
【0017】
【発明の効果】
以上のように、この発明によれば、一側に磁極ティース部を有する複数のヨーク部が屈曲部を介して連結されたヨーク部材を所定の枚数積層し、磁極ティース部が内側となるように屈曲部を屈曲させて環状に形成されるステータコア、およびステータコアの各磁極ティース部にそれぞれ巻回されたコイルを有するステータを備え、各コイルが、引き出し側から渡り部を介して順次接続される回転電動機において、各ヨーク部の他側における屈曲部両端部にコイルの渡り部を引っ掛けて保持する一対の引っ掛け部が突出して形成され、一対の引っ掛け部は、ステータコアを環状にしたときにステータコアの中心から延びる放射方向から互いに反対方向に所定の角度変位するものであるので、渡り部の弛みがなくなり、挟み込み等による断線、ショートの発生を防止して、信頼性の向上を図ることが可能な回転電動機を提供することができる。
【図面の簡単な説明】
【図1】 この発明の実施の形態1における回転電動機の構成を示す平面図である。
【図2】 図1における回転電動機のステータの要部の屈曲前の構成を示し、(A)は平面図、(B)は斜視図である。
【図3】 図1における回転電動機のステータの要部の屈曲後の構成を示し、(A)は平面図、(B)は斜視図である。
【図4】 図1における回転電動機のステータコアの構成を示す平面図である。
【図5】 図4におけるとは異なるステータコアの構成を示す平面図である。
【図6】 図4におけるとはさらに異なるステータコアの構成を示す平面図である。
【図7】 この発明の実施の形態2における回転電動機の要部の構成を示す平面図である。
【図8】 図7における回転電動機のステータコアの屈曲される前の状態を示す平面図である。
【図9】 図7における回転電動機のステータコアの屈曲された後の状態を示す平面図である。
【図10】 この発明の実施の形態3における回転電動機の要部の構成を示す斜視図である。
【符号の説明】
2 ステータ、3 ロータ、5 磁極テイース部、
6,15,16,17 引っ掛け部、7 ヨーク部、8 薄肉部、
9 ヨーク部材、10 ステータコア、11 渡り部、12 コイル、
14 折曲縁、18 段部、19 面打ち。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating electric motor for medium rotation driving used in, for example, a magnetic disk and an optical disk driving device, and more particularly to a structure of a stator core.
[0002]
[Prior art]
In a conventional rotary motor, a plurality of yoke parts having a magnetic pole tee portion on one side are laminated and integrated with a predetermined number of yoke members, and coils are sequentially placed on the magnetic pole tee portions of each yoke portion. After being wound and connected via the crossover portion, the stator is configured by bending the bent portion into an annular shape so that the magnetic pole tee portion is inside (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-220844 (page 6, FIG. 6).
[0004]
[Problems to be solved by the invention]
In a conventional rotary motor, a coil is wound around a magnetic pole tee portion of each yoke portion and connected via a crossover portion, and then a bent portion is bent so that the magnetic pole tee portion is inside, thereby forming a stator. Therefore, compared to the state before bending of the bent portion, in the state where the bent portion is bent into an annular shape, the distance between the drawn portions of the coil, that is, the extension distance of the transition portion is shortened. When the crossing portion is mounted on the loose substrate, there is a problem that the reliability is lowered due to the occurrence of disconnection or short circuit due to pinching or the like.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotary motor that can prevent disconnection and short-circuit due to pinching and the like and can improve reliability. It is what.
[0006]
[Means for Solving the Problems]
In the rotary electric motor according to the present invention, a predetermined number of yoke members in which a plurality of yoke portions having magnetic teeth portions on one side are connected via the bending portions are stacked, and the bending portions are arranged so that the magnetic teeth portions are inside. In a rotary motor that includes a stator core that is bent and formed in an annular shape, and a stator that has a coil wound around each magnetic pole tooth portion of the stator core, and each coil is sequentially connected from the pull-out side via a crossover portion . a pair of hook portions for holding hooking the connecting portions of the coil at both ends of the bent portion definitive on the other side of the yoke part is formed to protrude, the pair of hook portions, the stator core from the center of the stator core when the annular It is displaced by a predetermined angle in the opposite direction from the extending radial direction .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a plan view showing a configuration of a rotary electric motor according to Embodiment 1 of the present invention, FIG. 2 shows a configuration of the main part of the stator of the rotary electric motor before bending in FIG. 1, (A) is a plan view, and (B ) Is a perspective view, FIG. 3 is a diagram showing the configuration of the main part of the stator of the rotary motor in FIG. 1 after bending, (A) is a plan view, (B) is a perspective view, and FIG. 4 is a stator core of the rotary motor in FIG. FIG. 5 is a plan view showing a configuration of a stator core different from that in FIG. 4, and FIG. 6 is a plan view showing a configuration of the stator core further different from that in FIG.
[0008]
In the figure, a rotary electric motor 1 is composed of a stator 2 and a rotor 3, for example, placed on a substrate 4 or the like. As shown in FIG. 4, the stator 2 has a plurality of magnetic pole teeth portions 5 formed on one side, and a pair of hook portions 6 formed on both end portions opposite to a thin portion described later on the other side. The yoke portion 9 is connected to a yoke portion 9 via a thin portion 8 as a bent portion, and a predetermined number of plates are stacked so that the magnetic pole tee portion 5 is on the inside, and the thin portion 8 is bent to form an annular shape. The stator core 10 to be formed and a plurality of coils 12 wound around the three magnetic pole teeth portions 5 of each yoke portion 7 simultaneously as shown in FIG. 2 and sequentially connected via the crossover portions 11, It is fixedly arranged on the substrate 4.
[0009]
Each crossover portion 11 is disposed so as to pass through a side different from the drawing side of the coil 12 of the hooking portion 6 in the stacking direction, and when the thin-walled portion 8 is bent as shown in FIG. 6 respectively hold | maintain the inclination crossing part 11 by displacing only a predetermined angle with respect to the radial direction extended from the center of the stator core 10 in a mutual direction. At this time, the crossover part 11 is delivered along the outer peripheral surface of the yoke part 7 while being held. The rotor 3 is rotatably held via a bearing (not shown) having a rotating shaft 13 disposed on the substrate 4 side, and an outer peripheral surface thereof is an inner peripheral surface of the stator, that is, a tip surface of each magnetic pole tee portion 5. And a predetermined gap.
[0010]
As described above, according to the first embodiment, the pair of hook portions 6 are formed on both end portions of the yoke member 9 facing the thin wall portion 8 on the other side of each yoke portion 7, and the coil 12 is provided on the hook portion 6. Since the crossover portion 11 is hooked, the crossover portion 11 is handed over along the outer peripheral surface of the yoke portion 7 due to the displacement of the hook portion 6 when the thin portion 8 is bent, and the crossover portion 11 is loosened. Therefore, it is possible to prevent the occurrence of disconnection or short-circuit due to pinching or the like and improve the reliability.
[0011]
In the above configuration, the hook portion 6 has a pin shape. However, the present invention is not limited to this, and has a bent edge 14 that is bent toward the center side of the yoke portion 7 as shown in FIG. The hooking portion 15 may be provided, and the provision of the bent edge 14 makes the holding of the crossing portion 11 more reliable, further improving the reliability, and bending the thin portion 8 as shown in FIG. By using the hooking portion 16 that already has an inclination at the previous time point, as in the case of FIG. 5, the crossing portion 11 is more reliably held, and the reliability can be further improved.
[0012]
Embodiment 2. FIG.
7 is a plan view showing a configuration of a main part of the rotating electrical machine according to Embodiment 2 of the present invention, FIG. 8 is a plan view showing a state before the stator core of the rotating electrical machine in FIG. 7 is bent, and FIG. It is a top view which shows the state after the stator core of the rotary electric machine in FIG.
In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0013]
In the stator core 10 according to the second embodiment, as shown in FIG. 8, step portions 18 are respectively formed at the bases of a pair of hook portions 17 formed at both ends facing the thin portion 8 on the other side of the yoke portion 7. ing. Then, when the thin portion 8 is bent, the step portion 18 is displaced so as to be located radially outward from the outer peripheral surface of the yoke portion 7 including the portion where the thin portion 8 is formed as shown in FIG. The crossover part 11 is held by the hook part 17 in a state of being placed on the step part 18.
[0014]
As described above, according to the second embodiment, the step portion 18 is formed at the base of the hook portion 17, and the transition portion 11 is held by the hook portion 17 in a state of being placed on the step portion 18. As shown in FIG. 7, when the crossover portion 11 is not in direct contact with the thin-walled portion 8 and a crack due to fatigue failure or the like occurs in the thin-walled portion 8, the crossover portion 11 comes into contact with the crack and damage of the coating occurs. Therefore, the reliability can be further improved.
[0015]
Embodiment 3 FIG.
FIG. 10 is a perspective view showing a configuration of a main part of the rotating electrical machine according to Embodiment 3 of the present invention.
In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the third embodiment, the hooking portion 6 is formed only on the two yoke members 9 on the drawing side of the coil 12, and the surface contact 19 is provided on the side of the hooking portion 6 that contacts the crossing portion 11. It has been subjected.
[0016]
As described above, according to the third embodiment, since the hook portion 6 is formed only on the two yoke members 9 on the drawing side of the coil 12, the crossover portion 11 extends along the outer peripheral surface of the remaining yoke member 9. Therefore, the crossover portion 11 does not protrude outward from the side surface of the stator core 10, and is prevented from coming into contact with a rotating portion such as a rotor (not shown). Since the surface contact 19 is provided on the side in contact with the portion 11, the crossover portion 11 is prevented from coming into contact with the corner portion of the hook portion 6 to damage the coating, and each can improve reliability. it can.
[0017]
【The invention's effect】
As described above, according to the present invention, a predetermined number of yoke members in which a plurality of yoke portions each having a magnetic tooth portion on one side are connected via a bent portion are stacked so that the magnetic pole teeth portion is on the inside. A stator core that is formed in an annular shape by bending a bent portion, and a stator that has a coil wound around each magnetic pole tooth portion of the stator core, and each coil is sequentially connected from the pull-out side via a crossover portion in the motor, a pair of hook portions are formed to project to hold hooking the connecting portions of the coil at both ends of the bent portion definitive on the other side of the yoke portion, a pair of hook portions, the stator core when the stator core in an annular since in opposite directions from the radiation direction extending from the center of the one in which a predetermined angular displacement, there is no slack of the connecting portions, disconnection due to pinching, etc., To prevent the occurrence of Yoto, it is possible to provide a rotary electric machine capable of improving reliability.
[Brief description of the drawings]
FIG. 1 is a plan view showing a configuration of a rotary electric motor according to Embodiment 1 of the present invention.
FIGS. 2A and 2B show a configuration before bending of a main part of a stator of the rotary electric motor in FIG. 1, wherein FIG. 2A is a plan view and FIG. 2B is a perspective view.
FIGS. 3A and 3B show a configuration after bending of a main part of the stator of the rotary electric motor in FIG. 1, wherein FIG. 3A is a plan view and FIG. 3B is a perspective view.
4 is a plan view showing a configuration of a stator core of the rotary electric motor in FIG. 1. FIG.
FIG. 5 is a plan view showing a configuration of a stator core different from that in FIG. 4;
6 is a plan view showing a configuration of a stator core further different from that in FIG. 4; FIG.
FIG. 7 is a plan view showing a configuration of a main part of a rotary electric motor according to Embodiment 2 of the present invention.
8 is a plan view showing a state before the stator core of the rotary electric motor in FIG. 7 is bent.
FIG. 9 is a plan view showing a state after the stator core of the rotary electric motor in FIG. 7 is bent.
FIG. 10 is a perspective view showing a configuration of a main part of a rotary electric motor according to Embodiment 3 of the present invention.
[Explanation of symbols]
2 stator, 3 rotor, 5 magnetic pole teeth,
6, 15, 16, 17 Hook, 7 Yoke, 8 Thin part,
9 yoke member, 10 stator core, 11 transition part, 12 coil,
14 Bending edges, 18 steps, 19 faces.

Claims (5)

一側に磁極ティース部を有する複数のヨーク部が屈曲部を介して連結されたヨーク部材を所定の枚数積層し、上記磁極ティース部が内側となるように上記屈曲部を屈曲させて環状に形成されるステータコア、および上記ステータコアの各磁極ティース部にそれぞれ巻回されたコイルを有するステータを備え、上記各コイルが、引き出し側から渡り部を介して順次接続される回転電動機において、上記各ヨーク部の他側における上記屈曲部両端部に上記コイルの渡り部を引っ掛けて保持する一対の引っ掛け部が突出して形成され、上記一対の引っ掛け部は、上記ステータコアを環状にしたときに上記ステータコアの中心から延びる放射方向から互いに反対方向に所定の角度変位することを特徴とする回転電動機。A predetermined number of yoke members, each having a magnetic tooth portion on one side and connected via a bent portion, are laminated, and the bent portion is bent so that the magnetic teeth portion is on the inside. And a stator having coils wound around the magnetic pole teeth of the stator core, wherein the coils are connected to each other in order from the lead-out side via a crossover. a pair of hook portions for holding hooking the connecting portions of the coil at both ends of the bent portion definitive on the other side is formed to project in, the pair of hook portions, of the stator core when the stator core in an annular A rotary electric motor that is displaced by a predetermined angle in a direction opposite to each other from a radial direction extending from a center . 上記引っ掛け部の先端には、上記ヨーク部の中央側に折曲し折曲縁が形成されていることを特徴とする請求項1記載の回転電動機。The tip of the hook portion, the rotary motor according to claim 1, wherein the bent edge that is bent toward the center of the yoke portion. 上記引っ掛け部の根本には、段部が形成されていることを特徴とする請求項1または2記載の回転電動機。  The rotary electric motor according to claim 1 or 2, wherein a step portion is formed at a base of the hook portion. 上記引っ掛け部は、上記渡り部のヨーク部材のみに形成されていることを特徴とする請求項1ないし3のいずれかに記載の回転電動機。The rotary electric motor according to any one of claims 1 to 3, wherein the hook portion is formed only on a yoke member of the transition portion. 上記引っ掛け部の上記コイルの渡り部と接する側には、面打ちが施されていることを特徴とする請求項1ないし4のいずれかに記載の回転電動機。  The rotary electric motor according to any one of claims 1 to 4, wherein a surface of the hooking portion is in contact with a crossing portion of the coil.
JP2002289539A 2002-10-02 2002-10-02 Rotating motor Expired - Fee Related JP3790509B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015186419A (en) * 2014-03-26 2015-10-22 パナソニックIpマネジメント株式会社 Electric motor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4735210B2 (en) * 2005-11-28 2011-07-27 パナソニック株式会社 motor
PL2149961T3 (en) 2008-07-30 2014-08-29 Askoll Holding Srl Proceding for the manufacturing of a stator for an electric motor and of an electric motor, stator and electric motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015186419A (en) * 2014-03-26 2015-10-22 パナソニックIpマネジメント株式会社 Electric motor

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