JP3515280B2 - Method of manufacturing stator for rotating electric machine - Google Patents
Method of manufacturing stator for rotating electric machineInfo
- Publication number
- JP3515280B2 JP3515280B2 JP13167796A JP13167796A JP3515280B2 JP 3515280 B2 JP3515280 B2 JP 3515280B2 JP 13167796 A JP13167796 A JP 13167796A JP 13167796 A JP13167796 A JP 13167796A JP 3515280 B2 JP3515280 B2 JP 3515280B2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- laminated core
- electric machine
- winding
- rotating 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
Links
Landscapes
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、回転電機の固定子
の製造方法に関する。
【０００２】
【従来の技術】近年、回転電機の小型化と高性能化が求
められており、そのための一つの手法として、積層コア
の突極に巻回されるコイルを高密度化して占積率を向上
させる手法がある。しかし、積層コアの突極へのコイル
の巻回しは、隣接位置に設けられた突極が障害となり困
難を極めるため、コイルを高密度に巻回し占積率を向上
させるのは難しかった。
【０００３】積層コアの突極に高い密度でコイルを巻回
するための方法としては、積層コアを分割してコイルを
巻回し、巻回した後に組み立てて積層コアとする方法が
知られている。このような方法は、特開平６−０５４４
６８号公報、特開平６−１０５４８７号公報に記載され
ている。
【０００４】特開平６−０５４４６８号公報記載の電動
機のステータは、回転電機のステータが外側のヨーク部
鉄芯と内側の歯部鉄芯とで分割できるような構成となっ
ている。
【０００５】また、特開平６−１０５４８７号公報記載
の回転電機の固定子は、積層コアが突極毎に分割された
複数の分割コアから構成されている。このような回転電
機の固定子によれば、分割コアの突極毎にコイルを巻回
した後、分割コアを環状に連結して積層コアを形成する
ため、コイルの巻回の際に他の突極が邪魔にならず、コ
イルの巻回密度を高めて占積率の向上を図ることができ
る。
【０００６】さらに、上記のような構成以外に、内側と
外側とが分割でき、さらに、内側か外側の何れか一方に
設けられた突極の部分が各突極毎に分割できるような構
成の回転電機の固定子も構想されている。
【０００７】
【発明が解決しようとする課題】上記構成の回転電機の
固定子はいずれも、分割された積層コアを精度よく組立
固定しないと、コギングトルクやトルクリップルが大き
くなり、モータの特性を向上させることができない。特
に、特開平６−１０５４８７号公報記載の回転電機の固
定子は、磁性板からなるコア板を積層する場合に積層の
ずれが生じやすく、この積層のずれによって、図７に示
すように、分割された積層コア４０の積層方向に歪みが
生じてしまう。このような歪みが生じた分割コアを環状
に結合して積層コアを形成すると、コギングトルクやト
ルクリップルが大きくなり、コイルの占積率が高いから
といってモータの特性を向上させることができず、小型
化の障害となっていた。
【０００８】本発明は以上のような従来技術の問題点を
解消するためになされたもので、コギングトルクやトル
クリップルの増大を招くことなくコイルの占積率を向上
させることが可能な回転電機の固定子の製造方法を提供
することを目的とする。
【０００９】
【課題を解決するための手段】請求項１記載の発明は、
突極毎に分割されたコア板をプレス積層して積層コア
を得る積層工程、上記積層コアを金型に組み込んで型締
めし、プレス積層による積層の方向に生じる歪みを矯正
した後、樹脂を充填して突極の少なくとも腕部の表面を
樹脂体で覆うインサート成形工程、上記インサート成形
工程を経た積層コアの突極に巻線を巻回する巻線工程、
上記巻線工程を経た積層コアを環状に結合して固定子を
形成する結合工程を備えたことを特徴とする。
【００１０】
【００１１】
【００１２】
【発明の実施の形態】以下、本発明にかかる回転電機の
製造方法の実施の形態について図面を参照しながら説明
する。図１において、固定子１は円環状で、外周側には
円環状の基部を有しており、基部の内周側からは均等な
開き角度づつ複数の突極１ａが生じている。突極１ａは
内周側先端に設けられ周方向に広がった傘部と、傘部と
固定子１の基部とを接続する腕部とから構成されてい
る。
【００１３】上記固定子１の基部の内周側の部分、腕部
１ｂ全体、傘部の外周側の部分は樹脂体３によって覆わ
れている。また、各突極１ａの樹脂体３で覆われた腕部
１ｂにはコイル２が巻回されている。
【００１４】上記固定子１は、各突極１ａごとに分割さ
れたコアを積層してなる積層コア１０を環状につなぎ合
わせて固定することにより固定子１が形成されている。
【００１５】次に、単体の積層コア１０について説明す
る。図２、図３において、積層コア１０は主として、磁
性板からなるコアを複数枚積層して得られる突極１ａ
と、突極１ａの表面を覆う樹脂体３、コイル２などから
構成されている。突極１ａは、扇形状の基部１ｂと、基
部１ｂから一方向に延びた腕部１ｃ、腕部１ｃの一端に
設けられた傘部１ｄの各部分からなる。このうち、腕部
１ｃの表面は樹脂体３で覆われている。また、基部１ｂ
の上下面で腕部１ｃ側の縁部と、傘部１ａの上下面で腕
部１ｃ側の縁部も樹脂体３で覆われている。なお、基部
１ｂの上下面で腕部１ｃ側の縁部を覆う樹脂体３は、上
方向と下方向に突出し、それぞれ突出部３ｂ、突出部３
ｂ’となっている。また、傘部１ａの上下面で腕部１ｃ
側の縁部を覆う樹脂体３も、上方向と下方向に突出し、
それぞれ突出部３ａ、突出部３ａ’となっている。この
ように、突極１ａを樹脂体３で覆うことにより、複数枚
の磁性板を積層することにより突極１ａを構成するコア
が一体に固定されている。さらに、樹脂体３で覆われた
積層コア１０の腕部１ｃにはコイル２が巻回されてい
る。
【００１６】以上のような構成の積層コア１０を、基部
１ｂの部分でつなぎ合わせて環状にすることにより、内
周側に均等な開き角度で複数の突極１ａを有する固定子
１が得られる。
【００１７】次に、上記回転電機の固定子に用いられる
固定子１の製造方法について説明する。
１．まず、磁性板から形成される突極形状のコアをプレ
ス積層して積層体を形成する。この積層体の形態は、例
えば図７に示すような形態である。
２．次に、図４に示すように上記積層体を金型２０に取
り付けて型締めし、プレス積層によって生じた歪みを矯
正する。金型２０は、上型２０ａと下型２０ｂとからな
り、上型２０ａと下型２０ｂには、それぞれ樹脂を注入
するためのゲート１１、１１’が設けられている。ゲー
ト１１、１１’の積層コア１０との対向部分には、樹脂
体３を形成するためのキャビティ１１ａ、１１ａ’が設
けられている。
３．次に、ゲート１１、１１’より樹脂を充填して積層
コア１０に樹脂体３をインサート成形する。樹脂体３を
インサート成形することにより、積層コア１０の腕部１
ｃ全体と、傘部１ａ、基部１ｂの一部が樹脂体３で覆わ
れる。
４．次に、樹脂体３がインサート成形された積層コア１
０を金型から取り出し、樹脂体３で覆われた腕部１ｃに
コイル２を巻回する巻線工程を施して、完結した積層コ
ア１０を得る。
５．次に、コイル２が巻回された複数の積層コア１０を
環状に結合する。
【００１８】以上のような構成の回転電機の固定子およ
びその製造方法によれば、突極１ａ毎に分割された積層
コア１０に対してコイル２を巻回するため、他の突極１
ａがコイル２の巻回の障害となることがなく、コイル２
を高密度に巻回することができ、占積率を向上させ、回
転電機の小型化等に貢献することができる。また、積層
コア１０は樹脂体３をインサート成形する場合に金型に
セットされて締め付けられ、歪み等が矯正されるため、
高い精度の積層コア１０を形成することができる。この
ような高い精度の積層コア１０を環状に結合して固定子
とし、この固定子を回転電機に用いれば、コギングトル
クやトルクリップル等の増大を抑えることができ、回転
電機の特性を向上させながら小型化することが可能とな
る。
【００１９】なお、絶縁体３の形状は上記のものに限ら
れるものではない。絶縁体３はインサート成形によって
形成されるので、自由度が高く、様々な形状に形成する
ことができる。例えば、図５、図６に示すように、基部
１ｂの上面で腕部１ｃ側の縁部に形成された突出部３ｂ
に溝３ｅ、３ｆを形成し、この溝３ｅ、３ｆにコイル２
の端部を通すように構成してもよい。なお、溝３ｅはコ
イル２の巻き始め端部を通すために下側に深くなるよう
に形成されており、溝３ｆはコイル２の巻き終わり端部
を通すために浅く形成されている。
【００２０】上記溝３ｅ、３ｆに沿ってコイル２の端部
を外部に引き出すと、コイル２の端部の絶縁被膜を剥離
する場合に、絶縁体３の一部である突出部３ａが壁とな
るため、剥離作業がし易いといったメリットがある。
【００２１】
【発明の効果】本発明によれば、突極毎に分割された積
層コアに対して巻線するため、他の突極が巻線の障害と
なることがなく、高密度な巻線が可能となり、占積率を
向上させて、回転電機の小型化等に貢献することが可能
となる。また、積層コアが樹脂体をインサート成形する
場合に金型にセットされて型締めされ、積層の際に生じ
た形状の歪み等が矯正されるため、高い精度の積層コア
を形成することが可能となる。また、このような高い精
度の積層コアを環状に結合して固定子とし、この固定子
を回転電機に用いることにより、コギングトルクやトル
クリップル等の増大を抑えることができ、回転電機の特
性を損なうことなく小型化することが可能となる。
【００２２】BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention provides a rotary electric machine stator
A method for producing the same. 2. Description of the Related Art In recent years, there has been a demand for miniaturization and high performance of rotating electric machines. One method for achieving this is to increase the density of coils wound around salient poles of a laminated core and to occupy the space. There are ways to improve the rate. However, it is difficult to wind the coil around the salient pole of the laminated core because the salient pole provided at the adjacent position becomes an obstacle, and it is difficult to improve the space factor by winding the coil at a high density. As a method for winding a coil at a high density around salient poles of a laminated core, there is known a method of dividing a laminated core, winding the coil, winding and assembling the laminated core to form a laminated core. . Such a method is disclosed in JP-A-6-0544.
No. 68 and JP-A-6-105487. [0004] The stator of the electric motor described in Japanese Patent Laid-Open No. 6-054468 is configured such that the stator of the rotating electric machine can be divided into an outer yoke core and an inner tooth core. [0005] The stator of the rotating electric machine described in Japanese Patent Application Laid-Open No. 6-105487 comprises a plurality of split cores in which a laminated core is divided for each salient pole. According to such a stator of the rotating electric machine, after winding the coil for each salient pole of the divided core, the divided cores are connected in an annular shape to form a laminated core. The salient poles do not interfere, and the winding density of the coil can be increased to improve the space factor. [0006] In addition to the above-mentioned structure, the inside and outside can be divided, and the salient pole portion provided on either the inside or the outside can be divided for each salient pole. A rotating electric machine stator is also envisioned. [0007] In any of the stators of the rotating electric machine having the above-described structure, unless the divided laminated cores are assembled and fixed with high accuracy, the cogging torque and the torque ripple increase, and the characteristics of the motor are reduced. Can't improve. Particularly, in the stator of the rotating electric machine described in Japanese Patent Application Laid-Open No. H06-105487, when a core plate made of a magnetic plate is laminated, misalignment of the lamination is likely to occur. In this case, distortion occurs in the stacking direction of the stacked cores 40. When the split cores having such distortions are annularly connected to form a laminated core, the cogging torque and the torque ripple increase, and the characteristics of the motor can be improved just because the space factor of the coil is high. And was an obstacle to miniaturization. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and a rotating electric machine capable of improving the space factor of a coil without increasing cogging torque or torque ripple. and to provide a manufacturing method of the stator. Means for Solving the Problems The invention according to claim 1 is:
A laminating step of pressing and laminating a core plate divided for each salient pole to obtain a laminated core, incorporating the laminated core into a mold and clamping.
Rice, after correcting the distortion caused in the direction of lamination by press lamination, the surface of at least the arm portion of the salient pole is filled with a resin insert molding step of covering with the resin body, the salient poles of the laminated core formed through the above insert molding process Winding process of winding the winding,
It is characterized by comprising a joining step of forming a stator by joining the laminated cores having undergone the winding step in a ring shape. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary electric machine according to the present invention will be described below.
Embodiments of the manufacturing method will be described with reference to the drawings. In FIG. 1, the stator 1 is annular and has an annular base on the outer peripheral side, and a plurality of salient poles 1a are formed from the inner peripheral side of the base at even opening angles. The salient pole 1a is provided with an umbrella portion provided at the inner peripheral end and extending in the circumferential direction, and an arm portion connecting the umbrella portion and the base of the stator 1. The inner portion of the base of the stator 1, the entire arm 1 b, and the outer portion of the umbrella are covered with a resin body 3. A coil 2 is wound around the arm 1b of each salient pole 1a covered with the resin body 3. The stator 1 is formed by connecting and fixing a laminated core 10 formed by laminating cores divided for each salient pole 1a in an annular manner. Next, the single laminated core 10 will be described. 2 and 3, the laminated core 10 is mainly a salient pole 1a obtained by laminating a plurality of cores made of a magnetic plate.
And a resin body 3 covering the surface of the salient pole 1a, a coil 2, and the like. The salient pole 1a includes a fan-shaped base 1b, an arm 1c extending in one direction from the base 1b, and an umbrella 1d provided at one end of the arm 1c. Of these, the surface of the arm 1c is covered with the resin body 3. Also, the base 1b
The upper and lower edges of the arm 1c side and the upper and lower surfaces of the umbrella portion 1a are also covered with the resin body 3. In addition, the resin body 3 which covers the edge part on the arm part 1c side with the upper and lower surfaces of the base part 1b protrudes upward and downward.
b '. Also, the arm 1c is placed on the upper and lower surfaces of the
The resin body 3 covering the side edge also protrudes upward and downward,
The projection 3a and the projection 3a 'are provided, respectively. In this way, by covering the salient pole 1a with the resin body 3, the core constituting the salient pole 1a is integrally fixed by laminating a plurality of magnetic plates. Further, the coil 2 is wound around the arm 1c of the laminated core 10 covered with the resin body 3. The stator 1 having a plurality of salient poles 1a at a uniform opening angle on the inner peripheral side can be obtained by joining the laminated cores 10 having the above-described configuration at the base 1b to form an annular shape. . Next, a method of manufacturing the stator 1 used for the stator of the rotating electric machine will be described. 1. First, a salient pole-shaped core formed from a magnetic plate is press-laminated to form a laminate. The form of this laminate is, for example, as shown in FIG. 2. Next, as shown in FIG. 4, the laminate is mounted on a mold 20 and clamped to correct distortion caused by press lamination. The mold 20 includes an upper mold 20a and a lower mold 20b, and the upper mold 20a and the lower mold 20b are provided with gates 11 and 11 'for injecting resin, respectively. Cavities 11 a and 11 a ′ for forming the resin body 3 are provided at portions of the gates 11 and 11 ′ facing the laminated core 10. 3. Next, resin is filled from the gates 11 and 11 ′ and the resin body 3 is insert-molded into the laminated core 10. The arm 1 of the laminated core 10 is formed by insert molding the resin body 3.
The entire c and a part of the umbrella part 1 a and the base part 1 b are covered with the resin body 3. 4. Next, the laminated core 1 in which the resin body 3 is insert-molded
0 is removed from the mold, and a winding step of winding the coil 2 around the arm 1c covered with the resin body 3 is performed to obtain a completed laminated core 10. 5. Next, the plurality of laminated cores 10 around which the coil 2 is wound are joined in a ring shape. According to the stator of the rotating electric machine and the method of manufacturing the same, the coil 2 is wound around the laminated core 10 divided for each salient pole 1a.
a does not hinder the winding of the coil 2;
Can be wound at high density, the space factor can be improved, and the rotating electric machine can be downsized. In addition, when insert molding the resin body 3, the laminated core 10 is set in a mold and tightened, and distortion and the like are corrected.
A highly accurate laminated core 10 can be formed. If such a high-accuracy laminated core 10 is annularly coupled to form a stator, and this stator is used in a rotating electric machine, it is possible to suppress an increase in cogging torque, torque ripple, etc., and to improve the characteristics of the rotating electric machine. However, it is possible to reduce the size. The shape of the insulator 3 is not limited to the above. Since the insulator 3 is formed by insert molding, it has a high degree of freedom and can be formed in various shapes. For example, as shown in FIGS. 5 and 6, the protrusion 3 b formed on the upper surface of the base 1 b at the edge on the arm 1 c side
Grooves 3e, 3f are formed in the grooves 3e, 3f, and the coils 2e are formed in the grooves 3e, 3f.
May be configured to pass through the end. The groove 3e is formed so as to be deeper downward so as to pass the winding start end of the coil 2, and the groove 3f is formed shallowly so as to pass the winding end end of the coil 2. When the end of the coil 2 is pulled out to the outside along the grooves 3e and 3f, when the insulating film on the end of the coil 2 is peeled off, the protrusion 3a, which is a part of the insulator 3, is connected to the wall. Therefore, there is an advantage that the peeling operation is easy. According to the present invention, since winding is performed on the laminated core divided for each salient pole, another salient pole does not hinder the winding, and high-density winding is performed. Wires are made possible, and it is possible to improve the space factor and contribute to miniaturization of the rotating electric machine. Also, when the laminated core is inserted into a resin body, it is set in a mold and clamped to correct the distortion of the shape generated during lamination, so that a highly accurate laminated core can be formed. It becomes. In addition, such a high-accuracy laminated core is annularly coupled to form a stator, and by using this stator for a rotating electric machine, it is possible to suppress an increase in cogging torque, torque ripple, and the like, thereby improving the characteristics of the rotating electric machine. It is possible to reduce the size without loss. [0022]
【図面の簡単な説明】
【図１】本発明にかかる回転電機の固定子の実施の形態
を示す平面図。
【図２】同上回転電機の固定子を構成する積層コアの実
施の形態を示す平面図
【図３】同上斜視図。
【図４】本発明にかかる回転電機の固定子の製造方法の
一工程を示す断面図。
【図５】同上回転電機の固定子を構成する積層コアの別
の実施の形態を示す斜視図。
【図６】同上平面図。
【図７】従来の回転電機の固定子に用いられる積層コア
の例を示す斜視図。
【符号の説明】
１ 固定子
１ａ 突極１ｃ
腕部
２ 巻線
３ 樹脂体
１０ 積層コアBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of a stator of a rotating electric machine according to the present invention. FIG. 2 is a plan view showing an embodiment of a laminated core constituting a stator of the rotating electric machine; FIG. 3 is a perspective view of the same; FIG. 4 is a sectional view showing one step of a method of manufacturing a stator of the rotating electric machine according to the present invention. FIG. 5 is a perspective view showing another embodiment of the laminated core constituting the stator of the rotating electric machine; FIG. 6 is a plan view of the same. FIG. 7 is a perspective view showing an example of a laminated core used for a stator of a conventional rotating electric machine. [Description of Signs] 1 Stator 1a Salient pole 1c Arm 2 Winding 3 Resin body 10 Laminated core
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−311675（ＪＰ，Ａ) 特開 平８−47194（ＪＰ，Ａ) 特開 平２−52860（ＪＰ，Ａ) 特開 平９−191588（ＪＰ，Ａ) 特開 昭55−36973（ＪＰ，Ａ) 特開 平５−252700（ＪＰ，Ａ) 特開 平６−269150（ＪＰ，Ａ) 実開 昭61−121704（ＪＰ，Ｕ) 実開 平６−13361（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 1/14 H02K 1/18 H02K 15/085 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-311675 (JP, A) JP-A-8-47194 (JP, A) JP-A-2-52860 (JP, A) JP-A-9-99 191588 (JP, A) JP-A-55-36973 (JP, A) JP-A-5-252700 (JP, A) JP-A-6-269150 (JP, A) Japanese Utility Model Laid-Open No. 61-121704 (JP, U) Hikaru Hei 13-13361 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) H02K 1/14 H02K 1/18 H02K 15/085
Claims (1)
して積層コアを得る積層工程、 上記積層コアを金型に組み込んで型締めし、プレス積層
による積層の方向に生じる歪みを矯正した後、樹脂を充
填して突極の少なくとも腕部の表面を樹脂体で覆うイン
サート成形工程、 上記インサート成形工程を経た積層コアの突極に巻線を
巻回する巻線工程、 上記巻線工程を経た積層コアを環状に結合して固定子を
形成する結合工程、 を備えたことを特徴とする回転電機の固定子の製造方
法。(57) [Claims] [Claim 1] A laminating step of pressing and laminating a core plate divided for each salient pole to obtain a laminated core, incorporating the laminated core into a mold, clamping the mold, and press laminating. After correcting the distortion caused in the direction of lamination by the insert molding step, filling the resin and covering at least the surface of the arm portion of the salient pole with a resin body, winding the winding around the salient pole of the laminated core after the insert molding step. A method for manufacturing a stator of a rotating electrical machine, comprising: a winding step of rotating; and a coupling step of forming a stator by annularly coupling the laminated cores having passed through the winding step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13167796A JP3515280B2 (en) | 1996-05-27 | 1996-05-27 | Method of manufacturing stator for rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13167796A JP3515280B2 (en) | 1996-05-27 | 1996-05-27 | Method of manufacturing stator for rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09322439A JPH09322439A (en) | 1997-12-12 |
| JP3515280B2 true JP3515280B2 (en) | 2004-04-05 |
Family
ID=15063649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13167796A Expired - Fee Related JP3515280B2 (en) | 1996-05-27 | 1996-05-27 | Method of manufacturing stator for rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3515280B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK173641B1 (en) * | 1998-12-15 | 2001-05-14 | Bonus Energy As | Generator, preferably for a wind turbine |
| US20020093269A1 (en) * | 2001-01-16 | 2002-07-18 | Harter Bernard G. | Slot area undercut for segmented stators |
| JP2004260985A (en) * | 2003-02-03 | 2004-09-16 | Sankyo Seiki Mfg Co Ltd | Armature of rotary electric machine, rotary electric machine using the same, and method of manufacturing armature of rotary electric machine |
| US7414347B2 (en) | 2004-03-23 | 2008-08-19 | Emerson Electric Co. | End cap for segmented stator |
| US7116023B2 (en) * | 2004-03-23 | 2006-10-03 | Emerson Electric Co. | End cap for interconnecting winding coils of a segmented stator to reduce phase-on-phase conditions and associated methods |
| JP2008148470A (en) * | 2006-12-12 | 2008-06-26 | Hitachi Ltd | Concentrated winding coil and its manufacturing method |
| JP5453881B2 (en) * | 2009-03-31 | 2014-03-26 | 日本電産株式会社 | motor |
| JP5379550B2 (en) * | 2009-04-21 | 2013-12-25 | 三菱電機株式会社 | Armature |
| JP2012023944A (en) * | 2010-06-15 | 2012-02-02 | Alphana Technology Co Ltd | Rotary apparatus |
| JP2013150520A (en) * | 2012-01-23 | 2013-08-01 | Aisin Seiki Co Ltd | Electric pump, and method of resin-molding housing for use in electric pump |
| DE102020131418A1 (en) | 2020-11-26 | 2022-06-02 | Nidec Motors & Actuators (Germany) Gmbh | Stator with wire lead insulator |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536973A (en) * | 1978-09-06 | 1980-03-14 | Omron Tateisi Electronics Co | Production of coil device |
| JPS61121704U (en) * | 1984-08-22 | 1986-07-31 | ||
| JPH0252860A (en) * | 1988-05-25 | 1990-02-22 | Nippon Denso Co Ltd | Coil device |
| JPH05252700A (en) * | 1992-02-28 | 1993-09-28 | Toshiba Corp | Manufacture of stator for electric rotating machine |
| JPH0613361U (en) * | 1992-07-13 | 1994-02-18 | 株式会社安川電機 | Rotating electric machine |
| JPH06269150A (en) * | 1993-03-12 | 1994-09-22 | Sawafuji Electric Co Ltd | Manufacture of stator for rotating electric machine |
| JP2933800B2 (en) * | 1993-04-23 | 1999-08-16 | 株式会社三協精機製作所 | Split annular core |
| JP3541449B2 (en) * | 1994-08-03 | 2004-07-14 | 株式会社安川電機 | Coil terminal fixing method |
| JP3017085B2 (en) * | 1995-11-02 | 2000-03-06 | 三菱電機株式会社 | Rotating electric machine and method of manufacturing the same |
-
1996
- 1996-05-27 JP JP13167796A patent/JP3515280B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09322439A (en) | 1997-12-12 |
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