JPS596736A - Stator for motor - Google Patents

Abstract

PURPOSE:To improve the reliability of the bonding portion of divided cores without necessity of particular work by forming a recess or a projection on the outer periphery of a plurality of divided cores in the vicinity of the divided surface, and bonding them via a bonding band which is made of a metal layer and an insulating layer. CONSTITUTION:Divided cores 1, 1' are formed with recesses 3, 3' or a projection on the outer periphery in the vicinity of the divided surface 2. A bonding band 5 is mounted on the recesses, 3, 3' or the projection so that the divided surfaces 2 of the cores 1, 2' are intimately contacted. This band 5 is constructed in a 2-layer structure, in which a metal layer 5a made of a ferromagnetic material or a metal plate or the like having an elasticity such as cores is arranged at the side opposed to the cores 1, 1' and an electrically insulating layer 5b is arranged at the outside. In this manner, the reliability of the bonding portion of the divided cores can be remarkably enhanced without necessity of a particular work.

Description

【発明の詳細な説明】 本発明は固定子鉄心を複数に分割した電動機固定子に関
するもので、特に分割鉄心を接合する際に、分割鉄心の
分割面近傍の外周に設けた凹部又は凸部に装着して用い
る固定子鉄心用接合バンドに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motor stator in which a stator core is divided into a plurality of parts, and in particular, when joining the divided cores, a concave portion or a convex portion provided on the outer periphery of the divided core near the dividing surface. This invention relates to a joint band for a stator core that is attached and used.

′電動機の固定子鉄心を複数に分割すると、巻線の挿入
又は巻装作業がやり易くなるなどの利点があり、特に鉄
心　鉄部のスロット毎に巻線を巻装するいわゆるトロイ
ダル巻線を施す場合においては、その効果は非常に大で
ある。ところが、ここで問題になるのが分割された鉄心
の接合である。´Dividing the stator core of an electric motor into multiple parts has the advantage of making it easier to insert or wind the windings, and in particular, it is possible to do so-called toroidal winding in which windings are wound in each slot of the iron part of the core. In some cases, the effect is very large. However, the problem here is joining the divided iron cores.

これをうまくやらないと接合面において磁気抵抗が増大
するなどして性能上好ましくない結果を招き、更に接合
の方法によっては、作業性が悪くなったり設備費用がか
かったり或は巻線や鉄心絶縁を傷めるなどの弊害が発生
し、分割鉄心を採用できない事になる。If this is not done properly, magnetic resistance will increase at the bonding surface, resulting in unfavorable performance results.Furthermore, depending on the bonding method, workability may deteriorate, equipment costs may increase, or winding and core insulation may increase. This would result in adverse effects such as damage to the core, making it impossible to use a split core.

第１図、第２図は固定子鉄心を複数に分割した固定子鉄
心において接合バンドを用いた鉄心接合構造の一例を示
すものである。図において、スロットと巻線の図示を省
略した分割鉄心１及び１′は共にその分割面２の近傍の
外周に凹部３，３′は凸部４，４′が設けられている。FIGS. 1 and 2 show an example of a core joining structure using joining bands in a stator core in which the stator core is divided into a plurality of parts. In the figure, split cores 1 and 1', whose slots and windings are not shown, are both provided with recesses 3, 3' and protrusions 4, 4' on their outer peripheries in the vicinity of their split surfaces 2.

そして両分側鉄心１゜ゼめ分割面２を密接させる様に、
前記凹部又は凸部に接合バンド６が装着されている。こ
こで、接合バンド６の材質が、金属である方が接合強度
。Then, so that the dividing surfaces 2 of the iron cores on both sides are brought into close contact with each other by 1°,
A joining band 6 is attached to the concave portion or convex portion. Here, the bonding strength is higher when the material of the bonding band 6 is metal.

スペースの点で有利であり、金属の中でも強磁性体金属
を使用すれば、接合部の磁気ロス低減にも効果がある。It is advantageous in terms of space, and if ferromagnetic metal is used among metals, it is also effective in reducing magnetic loss at the joint.

しかし、第３図、第４図の如き、トロイダル巻線を施し
た状態を考えると、第３図においては、巻線６が崩れて
６ａで示す如く分割面側へ落ちだ場合、その崩れ線が接
合バンド６に接触するし、第４図においては、巻線後に
外圧等で押えられた場合、巻線６が横にはみ出すだけで
接合バンド６に接触する。However, if we consider the state in which toroidal windings are applied as shown in Figs. 3 and 4, in Fig. 3, if the winding 6 collapses and falls to the dividing surface side as shown by 6a, the collapse line In FIG. 4, when the winding wire 6 is pressed down by external pressure or the like after winding, the winding wire 6 just protrudes sideways and comes into contact with the joining band 6.

接合バンド６が金属であれば、巻線６の接触は電気絶縁
上好ましくない。If the bonding band 6 is made of metal, contact of the winding 6 is not preferable in terms of electrical insulation.

まだ、分割鉄心に巻線を施しだ後接合する訳だから、分
割面近傍に巻線の巻始め又は巻終りの線端があり、従−
）て分割面近傍で結線或は日出線接続が行なわれる事が
多くなり、この場合にも接合バンドに接続部が接触した
りする危険がある。Since the wires are wound on the split cores and then joined, the end of the winding at the beginning or end of the winding is near the splitting surface, and
), wire connections or Hiji wire connections are often made near the dividing surface, and in this case too, there is a risk that the connection portion may come into contact with the joining band.

本発明は以上の諸点を改良した、接合性、電気絶縁性共
に秀れた接合バンドを提供しようとするものである。The present invention aims to provide a bonding band that improves the above-mentioned points and has excellent bonding properties and electrical insulation properties.

第６図は本発明にかかる接合バンドの実施例の拡大部分
斜視図であり、第６図は鉄心への装着状態の部分平面図
である。FIG. 6 is an enlarged partial perspective view of an embodiment of the joining band according to the present invention, and FIG. 6 is a partial plan view of the joining band in a state where it is attached to an iron core.

図において、接合バンド６は分割鉄心１，１′に対向す
る側に金属層６１Ｌ、外側に電気絶縁層６ｂが配された
２層構造となっている。そして、金属層６乙には鉄心な
どの強磁性体或はバネ性を有する金属板が用いられ、鉄
心１，１力接合を行ない電気絶縁層６ｂには塩化ビニル
等の電気絶縁性プラスチックフィルム等が用いられ、貼
り合せ等、適当な方法で金属層５１Ｌと一体に構成され
、接合部分の電気絶縁を確保している。当然の半生ら、
電気絶縁層６ｂは法令に定める電気絶縁性を有すに充分
な厚さがあれば良く、一般にそれは数十ミクロン以上で
目的を達するから、接合用の金属層６＆の方が厚さが大
となる。In the figure, the bonding band 6 has a two-layer structure with a metal layer 61L on the side facing the split cores 1 and 1' and an electrical insulating layer 6b on the outside. A ferromagnetic material such as an iron core or a metal plate having spring properties is used for the metal layer 6B, and the iron cores 1 and 1 are joined by force, and the electrically insulating layer 6b is made of an electrically insulating plastic film such as vinyl chloride. is used, and is integrally formed with the metal layer 51L by an appropriate method such as bonding, to ensure electrical insulation at the joint portion. Naturally, half a life, etc.
The electrical insulating layer 6b only needs to be thick enough to have the electrical insulating properties stipulated by law, and generally a thickness of several tens of microns or more achieves the purpose, so the metal layer 6& for bonding is thicker. Become.

以上の様な構成にする事によって、仮に第６図の如く巻
線６が接合バンド６に接触する事があっても、電気絶縁
性が損われる事がなく、安定した品質の分割鉄心の接合
部を得る事ができる。With the above configuration, even if the winding 6 comes into contact with the joining band 6 as shown in Fig. 6, the electrical insulation will not be impaired and the split core can be joined with stable quality. You can get the part.

又、第７図の如く、金属層６＆よりも電気絶縁層６ｂの
方を両側に長く鉄心の端面からはみ出る様に形成してお
くと、鉄心接合部の上に巻線接続部や日出線接続部を配
した場合も、接合バンド６やその繻部エブジ或は接合部
鉄心エツジにそれらが接触して損傷するという事はなく
なる。In addition, as shown in FIG. 7, if the electrical insulating layer 6b is longer than the metal layer 6& and is formed on both sides so as to protrude from the end face of the core, the winding connection part and the sun wire can be placed on top of the core joint part. Even when connecting portions are provided, there is no possibility that they will come into contact with the joint band 6, its selvedge edges, or joint core edges and be damaged.

以上説明した如く、本発明によれば、分割鉄心接合部の
信頼性を大巾に高めかつ、その為に特別の作業をする必
要もなく効果的である。As explained above, according to the present invention, the reliability of the split core joint is greatly improved, and there is no need for any special work for this purpose.

なお、実施例においては、分割鉄心をその分割面近傍の
外周に設けた凸部に接合バンドを装着する場合を説明し
たが、それだけに限るものではなく、分割鉄心を接合バ
ンドを用いて接合する場合の接合バンドには、いずれの
場合でも効果が得られるものである。In addition, in the embodiment, the case where the joining band is attached to the convex part provided on the outer periphery of the split iron core has been explained, but the invention is not limited to this, and the case where the split iron core is joined using the joining band is explained. The effect can be obtained with the joining band in any case.

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

第１図、第２図は接合バンドで分割鉄心を接合した実施
例のスロット及び巻線を省略して示す部分平面図、第３
図、第４図は第１図、第２図に巻線を施した状態の部分
平面図、第６図は本発明にかかる接合バンドの構成を示
す部分斜視図、第６図は同接合バンドを用いて接合した
鉄心の部分平面図、第７図は本発明の別の実施例による
接合バンドの構成を示す部分斜視図である。 １．１＜・・・・・分割鉄心、２・・・・・・分割面、
３　、３’−・・・・・凹部、４，４′・・・・・・凸
部、６・・・・・・接合バンド、６１Ｌ・・・・・・金
属層、６ｂ・・・・・・電気絶縁層。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第５ｒ１１ 第６（ｉｌ １１７図Figures 1 and 2 are partial plan views of an embodiment in which split cores are joined by joining bands, with slots and windings omitted;
4 is a partial plan view of the state in which the wires are wound as shown in FIGS. 1 and 2, FIG. 6 is a partial perspective view showing the structure of the joint band according to the present invention, and FIG. FIG. 7 is a partial perspective view showing the configuration of a joining band according to another embodiment of the present invention. 1.1<...Split core, 2...Split surface,
3, 3'----concave portion, 4,4'---convex portion, 6---joining band, 61L---metal layer, 6b------ ...Electrical insulation layer. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 5r11 Figure 6 (il Figure 117)

Claims (1)

【特許請求の範囲】 （１）環状の固定子鉄心を複数に分割し、この分割鉄心
の分割面近傍の外周に凹部又は凸部を設け、この凹部又
は凸部に金属層と電気絶縁層の１層で構成された接合バ
ンドを装着して分割鉄心を接合した電動機固定子。 （２）接合バンドの金属層は固定子鉄心に対向する面に
配置した特許請求の範囲第１項記載の電動機固定子。 （３）接合バンドの金属層を強磁性体で構成した特許請
求の範囲第２項記載の電動機固定子。 （４）接合バンドの金属層をバネ材料で構成した特許請
求の範囲第２項記載の電動機固定子。 （６）接合バンドは鉄心積層方向の長さが、金属層より
電気絶縁層の方が長く、かつ金属層の長さの両列側に電
気絶縁層が延出するよう構成した特許請求の範囲第２項
記載の電動機固定子。 （６）接合バンドは電気絶縁層よシ金属層の厚さを厚く
形成した特許請求の範囲第２項記載の電動機固定子。[Scope of Claims] (1) An annular stator core is divided into a plurality of parts, a recess or a convex part is provided on the outer periphery near the dividing surface of the divided core, and a metal layer and an electrically insulating layer are formed in the recess or convex part. A motor stator in which split iron cores are joined by attaching a joining band made up of one layer. (2) The motor stator according to claim 1, wherein the metal layer of the bonding band is disposed on a surface facing the stator core. (3) The motor stator according to claim 2, wherein the metal layer of the joining band is made of a ferromagnetic material. (4) The electric motor stator according to claim 2, wherein the metal layer of the joining band is made of a spring material. (6) Claims in which the joint band is configured such that the length of the electrical insulating layer in the core lamination direction is longer than that of the metal layer, and the electrical insulating layer extends on both rows of the length of the metal layer. The electric motor stator according to item 2. (6) The electric motor stator according to claim 2, wherein the joining band has a metal layer thicker than an electrically insulating layer.