JPH10127018A - Manufacture of stator - Google Patents

Manufacture of stator

Info

Publication number
JPH10127018A
JPH10127018A JP27572896A JP27572896A JPH10127018A JP H10127018 A JPH10127018 A JP H10127018A JP 27572896 A JP27572896 A JP 27572896A JP 27572896 A JP27572896 A JP 27572896A JP H10127018 A JPH10127018 A JP H10127018A
Authority
JP
Japan
Prior art keywords
stator core
stator
varnish
winding
teeth
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.)
Pending
Application number
JP27572896A
Other languages
Japanese (ja)
Inventor
Kenji Narita
憲治 成田
Takashi Suzuki
孝史 鈴木
Hiroyuki Okudera
浩之 奥寺
Yuji Kawai
裕司 河合
Yuji Soma
裕治 相馬
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General 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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP27572896A priority Critical patent/JPH10127018A/en
Publication of JPH10127018A publication Critical patent/JPH10127018A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a stator which can prevent the cracks of a stator core of a motor and allows the stator to have an annealing effect and have a high reliability. SOLUTION: Nearly I-shaped teeth 3a are formed at equal interval from a yoke section of a stator core and nearly U-shaped teeth 3b which is symmetrical about the center of the nearly I-shaped teeth 3a is formed from the base of every other nearly I-shaped teeth 3a. Both inside and outside every nearly U-shaped teeth 3b, inner recesses 4a and outer recesses 4b are formed. The stator core except for at least the ends of the teeth is covered with resin by insert molding (insert molding process) and a wire is wound (wire winding process) around the stator core. After winding the wire, the stator core is impregnated with heat resistant varnish (varnish treatment process) and then is heated and dried (heating and drying process).

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は固定子の製造方法に
係り、詳しくは溝絶縁層と端板の成形方法と工程に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a stator, and more particularly, to a method and a process for forming a groove insulating layer and an end plate.

【0002】[0002]

【従来の技術】従来、電動機における固定子の製造方法
は、一例として図2に示すように、ステータコア1の継
鉄部2から略I字型の歯部3aを等間隔に設け、この略
I字型の歯部3aの一つ置きの基端より両側に対称な略
コ字型の歯部3bを設け、同略コ字型の歯部3bの内側
と外側に、夫々内溝4aと外溝4bを形成し、少なくと
も前記歯部の先端を除き、樹脂でインサート成形して前
記ステータコア1を覆うようにして、図3、図4に示す
ように、前記ステータコア1の絶縁層となる溝絶縁層5
と端板6を一体成形している。そして、図5に示すよう
に、前記ステータコアに外側巻線8、内側巻線9を巻装
する。この工程を図7に示しているが、この場合、この
後でワニス処理をしていなかった。
2. Description of the Related Art Conventionally, as a method of manufacturing a stator in an electric motor, as shown in FIG. 2, as an example, substantially I-shaped teeth 3a are provided at equal intervals from a yoke 2 of a stator core 1, and the substantially I A substantially U-shaped tooth portion 3b is provided symmetrically on both sides from every other base end of the U-shaped tooth portion 3a, and an inner groove 4a and an outer groove 4a are provided inside and outside the substantially U-shaped tooth portion 3b, respectively. A groove 4b is formed, and except for at least the tip of the tooth portion, insert molding with resin is performed so as to cover the stator core 1. As shown in FIGS. Layer 5
And the end plate 6 are integrally formed. Then, as shown in FIG. 5, an outer winding 8 and an inner winding 9 are wound around the stator core. FIG. 7 shows this step, but in this case, no varnish treatment was performed thereafter.

【0003】そのため、成形品のアニール効果がなく、
熱膨張収縮などにより応力が発生し、溝絶縁層5と端板
6の境界となる角隅部などに、応力集中が起こりクラッ
クが生じ、絶縁破壊を起こしたりするおそれがある問題
点を有していた。
[0003] Therefore, there is no annealing effect of the molded article,
There is a problem that stress is generated due to thermal expansion / contraction and the like, stress is concentrated at a corner or the like which is a boundary between the groove insulating layer 5 and the end plate 6, cracks are generated, and dielectric breakdown is caused. I was

【0004】[0004]

【発明が解決しようとする課題】本発明は、上記従来の
問題点に鑑みなされたもので、電動機のステータコアの
樹脂成形部の角隅部などにおけるクラックを防止し、ア
ニール効果を持たせ絶縁破壊を防止し信頼性を向上させ
た固定子の製造方法を提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is intended to prevent cracks at corners of a resin molded portion of a stator core of an electric motor, to provide an annealing effect and to provide insulation breakdown. It is an object of the present invention to provide a method for manufacturing a stator in which the reliability is improved and the reliability is improved.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
に、ステータコアの継鉄部から突出する複数の歯部を設
け、同歯部の間に各々溝を形成し、少なくとも前記歯部
の先端を除き、熱可塑性樹脂でインサート成形して前記
ステータコアを覆い、同ステータコアに巻線を巻装して
なる固定子の製造方法において、前記巻線を巻装した
後、ワニスを含浸し、加熱乾燥させてなるようにする。
In order to achieve the above object, a plurality of teeth protruding from a yoke of a stator core are provided, and grooves are formed between the teeth, and at least a tip of the teeth is formed. Except for, in a stator manufacturing method in which the stator core is covered by insert molding with a thermoplastic resin and a winding is wound around the stator core, after winding the winding, impregnating with a varnish, and heating and drying. Let it be.

【0006】そして、前記ワニスの加熱乾燥温度を、1
00°Cよりも高くしてなるようにする。
[0006] The heating and drying temperature of the varnish is set to 1
It should be higher than 00 ° C.

【0007】さらに、前記ワニスの加熱乾燥条件を、1
30°Cから150°Cの間で約1時間にしてなるよう
にする。
Further, the conditions for heating and drying the varnish are as follows:
Approximately 1 hour between 30 ° C and 150 ° C.

【0008】一方、前記ワニスが、溶剤型の電気絶縁ワ
ニスであるようにする。そして、前記電気絶縁ワニス
が、ポリエステルワニスであるようにする。
On the other hand, the varnish is a solvent-type electrically insulating varnish. The electrical insulating varnish is a polyester varnish.

【0009】[0009]

【発明の実施の形態】ステータコアの継鉄部から突出す
る複数の歯部を設け、同歯部の間に各々溝を形成し、少
なくとも前記歯部の先端を除き、熱可塑性樹脂でインサ
ート成形して前記ステータコアを覆い、同ステータコア
に巻線を巻装してなる固定子の製造方法において、前記
巻線を巻装した後、ワニスを含浸し、加熱乾燥させてな
るようにする。
BEST MODE FOR CARRYING OUT THE INVENTION A plurality of teeth protruding from a yoke of a stator core are provided, grooves are formed between the teeth, and insert molding is performed with a thermoplastic resin except at least the tips of the teeth. In the method for manufacturing a stator in which the stator core is covered and a winding is wound around the stator core, the winding is wound, and then varnish is impregnated and dried by heating.

【0010】[0010]

【実施例】本発明の実施例を添付図面を参照して詳細に
説明する。ここで、符号は従来と同じ部分は同一とす
る。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same parts as in the related art.

【0011】図1は、本発明による固定子の製造方法の
一実施例の工程を示すブロック図、図2は、本発明に用
いる固定子鉄心の平面図、図3は、本発明のインサート
成形工程の溝絶縁層及び端板を成形したステータコアを
示す要部拡大平面図、図4は、図3のCC’に対応する
要部拡大断面図、図5は、本発明の固定子の巻線巻装工
程後を示す平面図、図6は、本発明の固定子のワニス処
理工程後を示す平面図である。
FIG. 1 is a block diagram showing the steps of one embodiment of a method for manufacturing a stator according to the present invention, FIG. 2 is a plan view of a stator core used in the present invention, and FIG. 3 is insert molding according to the present invention. FIG. 4 is an enlarged plan view of a main part showing a stator core formed with a groove insulating layer and an end plate in a process, FIG. 4 is an enlarged cross-sectional view of a main part corresponding to CC ′ in FIG. 3, and FIG. FIG. 6 is a plan view showing a state after the winding step, and FIG. 6 is a plan view showing a state after the varnish processing step of the stator of the present invention.

【0012】本実施例では、ステータコア1の継鉄部2
から略I字型の歯部3aを等間隔に設け、この略I字型
の歯部3aの一つ置きの基端より両側に対称な略コ字型
の歯部3bを設け、同略コ字型の歯部3bの内側と外側
に、各々内溝4aと外溝4bを形成している。なお、本
発明はこのステータコア1に限定されるものではない。
In this embodiment, the yoke 2 of the stator core 1
, Substantially I-shaped teeth 3a are provided at equal intervals, and symmetrical substantially U-shaped teeth 3b are provided on both sides from the base end of every other of the substantially I-shaped teeth 3a. An inner groove 4a and an outer groove 4b are formed on the inside and outside of the V-shaped tooth portion 3b, respectively. The present invention is not limited to this stator core 1.

【0013】先ず、前記溝絶縁層及び端板のインサート
成形工程を施すので、これについて図3、図4により説
明する。ここでは、同溝絶縁層5及び端板6を、熱可塑
性樹脂であるPBT(ポリブチレンテレフタレート)に
よりインサート成形する。
First, an insert molding process for the groove insulating layer and the end plate is performed. This will be described with reference to FIGS. Here, the groove insulating layer 5 and the end plate 6 are insert-molded using PBT (polybutylene terephthalate) which is a thermoplastic resin.

【0014】次いで、巻線巻装工程を施すので、これに
ついて図5により説明する。前記ステータコア1の外溝
4bと次の外溝4bの間に、外側巻線8を巻装する。同
様に、前記ステータコア1の内溝4aと次の内溝4aの
間に、内側巻線9を巻装する。
Next, a winding step will be described with reference to FIG. An outer winding 8 is wound between the outer groove 4b of the stator core 1 and the next outer groove 4b. Similarly, an inner winding 9 is wound between the inner groove 4a of the stator core 1 and the next inner groove 4a.

【0015】さらに、前記ワニス処理工程を施すので、
これについて図6により説明する。この工程では、少な
くとも前記歯部の先端を除き前記ステータコア1に、溶
剤型または無溶剤型E種以上の電気絶縁ワニスである耐
熱性のワニス7のポリエステルワニスを含浸する。
Further, since the varnish treatment step is performed,
This will be described with reference to FIG. In this step, the stator core 1 is impregnated with a polyester varnish of a heat-resistant varnish 7 which is a solvent type or a non-solvent type E or higher electrical insulating varnish except for at least the tips of the teeth.

【0016】しかる後、加熱乾燥工程に入る。ここで
は、100°Cよりも高くした温度で加熱乾燥させてな
るようにし、樹脂等に含まれた水分を水蒸気として除去
する。さらに、前記ワニス7の加熱条件を、130°C
から150°Cの間で約1時間にしてなるようにすると
アニール効果を持たせられる。
Thereafter, a heating and drying step is started. Here, heat drying is performed at a temperature higher than 100 ° C., and moisture contained in the resin or the like is removed as water vapor. Further, the heating condition of the varnish 7 was set to 130 ° C.
If the temperature is set at about 1 hour between the temperature of about 150 ° C. and the temperature of about 150 ° C., an annealing effect can be obtained.

【0017】このようにして図1に示すように固定子を
製造することにより、前記熱膨張収縮などにより応力が
発生しても、溝絶縁層と端板の境界となるコーナー部
は、前記ワニス処理の後の加熱乾燥工程によりによっ
て、アニール効果を持たせることができることになる。
By manufacturing the stator as shown in FIG. 1 in this manner, even if stress is generated due to the thermal expansion and contraction or the like, the corner portion serving as the boundary between the groove insulating layer and the end plate is formed by the varnish. The annealing effect can be provided by the heating and drying step after the treatment.

【0018】[0018]

【発明の効果】以上のように本発明においては、ステー
タコアの継鉄部から突出する複数の歯部を設け、同歯部
の間に各々溝を形成し、少なくとも前記歯部の先端を除
き、熱可塑性樹脂でインサート成形して前記ステータコ
アを覆い、同ステータコアに巻線を巻装してなる固定子
の製造方法において、前記巻線を巻装した後、ワニスを
含浸し、加熱乾燥させてなるようにした。
As described above, according to the present invention, a plurality of teeth protruding from the yoke of the stator core are provided, grooves are formed between the teeth, and at least the tip of the teeth is removed. In a method for manufacturing a stator, in which the stator core is covered by insert molding with a thermoplastic resin and a winding is wound around the stator core, after winding the winding, varnish is impregnated and dried by heating. I did it.

【0019】この結果、電動機のステータコアの角隅部
におけるクラックを防止し、アニール効果を持たせるこ
とができ、信頼性を向上させた固定子の製造方法を提供
することができる。
As a result, it is possible to provide a method for manufacturing a stator in which cracks at corners of the stator core of the electric motor can be prevented, an annealing effect can be provided, and reliability is improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明による固定子の製造方法の一実施例の工
程を示すブロック図である。
FIG. 1 is a block diagram showing steps of one embodiment of a method for manufacturing a stator according to the present invention.

【図2】従来、及び本発明に用いる固定子鉄心の平面図
である。
FIG. 2 is a plan view of a conventional stator core used in the present invention.

【図3】従来、及び本発明のインサート成形工程の溝絶
縁層及び端板を成形したステータコアを示す要部拡大平
面図である。
FIG. 3 is a main part enlarged plan view showing a stator core in which a groove insulating layer and an end plate are formed in an insert forming step according to the related art and the present invention.

【図4】図3のCC’に対応する要部拡大断面図であ
る。
FIG. 4 is an enlarged sectional view of a principal part corresponding to CC ′ in FIG. 3;

【図5】従来、及び本発明の固定子の巻線巻装工程後を
示す平面図である。
FIG. 5 is a plan view showing a conventional state and a state after a winding step of a stator of the present invention.

【図6】本発明の固定子のワニス処理工程後を示す平面
図である。
FIG. 6 is a plan view showing a stator after a varnish processing step of the present invention.

【図7】従来の固定子の製造方法の一例の工程を示すブ
ロック図である。
FIG. 7 is a block diagram showing steps of an example of a conventional stator manufacturing method.

【符号の説明】[Explanation of symbols]

1 ステータコア 2 継鉄部 3a 略I字型の歯部 3b 略コ字型の歯部 4a 内溝 4b 外溝 5 溝絶縁層 6 端板 7 ワニス 8 外側巻線 9 内側巻線 DESCRIPTION OF SYMBOLS 1 Stator core 2 Yoke part 3a Substantially I-shaped tooth part 3b Substantially U-shaped tooth part 4a Inner groove 4b Outer groove 5 Groove insulating layer 6 End plate 7 Varnish 8 Outer winding 9 Inner winding

───────────────────────────────────────────────────── フロントページの続き (72)発明者 河合 裕司 川崎市高津区末長1116番地 株式会社富士 通ゼネラル内 (72)発明者 相馬 裕治 川崎市高津区末長1116番地 株式会社富士 通ゼネラル内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuji Kawai 1116 Suenaga, Takatsu-ku, Kawasaki City Inside Fujitsu General Co., Ltd. (72) Inventor Yuji Soma 1116 Suenaga, Takatsu-ku Kawasaki City Inside Fujitsu General Co., Ltd.

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 ステータコアの継鉄部から突出する複数
の歯部を設け、同歯部の間に各々溝を形成し、少なくと
も前記歯部の先端を除き、熱可塑性樹脂でインサート成
形して前記ステータコアを覆い、同ステータコアに巻線
を巻装してなる固定子の製造方法において、前記巻線を
巻装した後、ワニスを含浸し、加熱乾燥させてなること
を特徴とする固定子の製造方法。
A plurality of teeth protruding from a yoke of a stator core are provided, grooves are formed between the teeth, and insert molding is performed with a thermoplastic resin except for at least the tips of the teeth. A method for manufacturing a stator, comprising covering a stator core and winding a winding around the stator core, wherein after winding the winding, a varnish is impregnated and dried by heating. Method.
【請求項2】 前記ワニスの加熱乾燥温度を、100°
Cよりも高くしてなることを特徴とする請求項1記載の
固定子の製造方法。
2. The varnish is heated and dried at a temperature of 100 ° C.
2. The method for manufacturing a stator according to claim 1, wherein the height is higher than C.
【請求項3】 前記ワニスの加熱乾燥条件を、130°
Cから150°Cの間で約1時間にしてなることを特徴
とする請求項1記載の固定子の製造方法。
3. The condition for heating and drying the varnish is 130 °
2. The method according to claim 1, wherein the heating is performed for about 1 hour between C and 150 ° C.
【請求項4】 前記ワニスが、溶剤型の電気絶縁ワニス
であることを特徴とする請求項1記載の固定子の製造方
法。
4. The method according to claim 1, wherein the varnish is a solvent-type electrically insulating varnish.
【請求項5】 前記電気絶縁ワニスが、ポリエステルワ
ニスであることを特徴とする請求項4記載の固定子の製
造方法。
5. The method according to claim 4, wherein the electrically insulating varnish is a polyester varnish.
JP27572896A 1996-10-18 1996-10-18 Manufacture of stator Pending JPH10127018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27572896A JPH10127018A (en) 1996-10-18 1996-10-18 Manufacture of stator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27572896A JPH10127018A (en) 1996-10-18 1996-10-18 Manufacture of stator

Publications (1)

Publication Number Publication Date
JPH10127018A true JPH10127018A (en) 1998-05-15

Family

ID=17559562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27572896A Pending JPH10127018A (en) 1996-10-18 1996-10-18 Manufacture of stator

Country Status (1)

Country Link
JP (1) JPH10127018A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102545497A (en) * 2012-02-13 2012-07-04 浙江省金华市电机实业有限公司 Dipping paint drying method for stator random winding
CN104682640A (en) * 2015-02-13 2015-06-03 广西桂冠电力股份有限公司大化水力发电总厂 Combined drying method of generator stator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102545497A (en) * 2012-02-13 2012-07-04 浙江省金华市电机实业有限公司 Dipping paint drying method for stator random winding
CN104682640A (en) * 2015-02-13 2015-06-03 广西桂冠电力股份有限公司大化水力发电总厂 Combined drying method of generator stator

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