JP4624716B2 - Electric motor stator - Google Patents

Electric motor stator Download PDF

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JP4624716B2
JP4624716B2 JP2004144106A JP2004144106A JP4624716B2 JP 4624716 B2 JP4624716 B2 JP 4624716B2 JP 2004144106 A JP2004144106 A JP 2004144106A JP 2004144106 A JP2004144106 A JP 2004144106A JP 4624716 B2 JP4624716 B2 JP 4624716B2
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winding
insulating member
stator
insulating
electric motor
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JP2005328626A (en
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太加男 安藤
武文 田代
光広 鈴木
鐘治 真野
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アイチエレック株式会社
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本発明は、電動機の固定子のスロットから巻線端が引出され、巻線端同士または巻線端とリード線との接続点部を絶縁するための絶縁部材を有した電動機に関する。   The present invention relates to an electric motor having an insulating member for pulling out winding ends from slots of a stator of the electric motor and insulating the connecting ends between the winding ends or between the winding ends and a lead wire.

従来、電動機の固定子の巻線端同士または巻線端とリード線の端部とを半田、溶接、或いはカシメにより接続点を形成し、この接続点を絶縁チューブの一端部に挿入することにより接続点の絶縁を行っている。また、例えば実開昭５４−５７０４号公報（特許文献１参照）には、接続部１６ａを絶縁チューブ１１ａに挿入し、絶縁チューブ１１ａの端部を折り返し重ねた状態１５のままコイルエンド部１２に結束糸１３で固定している。これにより絶縁チューブ１１ａの板厚が薄くても絶縁チューブ１１ａを折り返し重ねることによって絶縁耐力を向上した絶縁構造が開示されている。   Conventionally, a connection point is formed by soldering, welding, or caulking between the winding ends of the stator of the motor or between the winding end and the end of the lead wire, and this connection point is inserted into one end of the insulating tube. The connection point is insulated. Further, for example, in Japanese Utility Model Laid-Open Publication No. 54-5704 (see Patent Document 1), the connecting portion 16a is inserted into the insulating tube 11a, and the end portion of the insulating tube 11a is folded and overlapped with the coil end portion 12 as it is. It is fixed with a binding thread 13. Accordingly, an insulating structure is disclosed in which the dielectric strength is improved by folding the insulating tube 11a even when the plate thickness of the insulating tube 11a is thin.

また、実開平０７―２７２６０号公報（特許文献２参照）には、複数のロール状絶縁チューブ１１ｂに接続部１６ａが収容され、絶縁チューブが一体に熱溶着した絶縁チューブ１１ｂが開示されている。これは薄い絶縁シートをロール状に巻いた絶縁チューブ１１ｂとしているため結束糸１３で容易にコイルエンド部１２に固定できる。また、ロール状絶縁チューブ１１ｂの少なくとも１個を完全なロール状に形成せず巻き残し部を設けることにより、他の絶縁チューブ１１ｂを巻き込み容易に一体化することができる絶縁構造が開示されている。   Japanese Utility Model Laid-Open No. 07-27260 (see Patent Document 2) discloses an insulating tube 11b in which connecting portions 16a are accommodated in a plurality of roll-shaped insulating tubes 11b and the insulating tubes are integrally heat-welded. Since this is an insulating tube 11b in which a thin insulating sheet is wound in a roll shape, it can be easily fixed to the coil end portion 12 with a binding yarn 13. In addition, an insulating structure is disclosed in which at least one of the roll-shaped insulating tubes 11b is not formed into a complete roll but is provided with an unwinding portion so that another insulating tube 11b can be easily wound and integrated. .

実開昭５４−５７０４号Shokai 54-5704 実開平０７―２７２６０号Actual Kaihei 07-27260

このような電動機の固定子の巻線同士または巻線端部とリード線の端部の接続点を半田、溶接、或いはカシメによって形成しているため、接続点の先端部分の仕上がり状況によっては、接続点部の先端部分に鋭い突起が発生することがある。この場合、特許文献１に示した絶縁構造のように接続点部を絶縁チューブに挿入し接続点の先端部を支点として絶縁チューブを折り返した際に、接続点の先端部分の鋭い突起により絶縁チューブを突き破り絶縁不良が発生する。また、特許文献２のように、複数の絶縁チューブを一体化する場合、絶縁チューブを一体化するための別工程が必要となり製造コストが上がってしまう。
また、複数の接続点を有する電動機の固定子においては、接続点を挿入した絶縁チューブを固定子の巻線上に固定する際、絶縁チューブの数が多くなり個々の絶縁チューブがバラバラに動くため作業性が悪化している。 Because the connection point between the windings of the stator of such an electric motor or between the winding end and the end of the lead wire is formed by soldering, welding, or caulking, depending on the finishing situation of the tip of the connection point, A sharp protrusion may occur at the tip of the connection point. In this case, as in the insulating structure shown in Patent Document 1, when the connecting point is inserted into the insulating tube and the insulating tube is folded back with the tip of the connecting point as a fulcrum, the insulating tube is caused by a sharp protrusion at the tip of the connecting point. Breaks through and causes poor insulation. Moreover, when integrating a plurality of insulating tubes as in Patent Document 2, a separate process for integrating the insulating tubes is required, resulting in an increase in manufacturing cost.
Also, in the stator of an electric motor having a plurality of connection points, when the insulating tube with the connection points inserted is fixed on the winding of the stator, the number of insulating tubes increases and the individual insulating tubes move apart. Sex is getting worse.

電動機の固定子のスロットに巻線を有し、前記巻線の巻線端は固定子のスロットから引出され巻線端同士または巻線端とリード線の端部とを接続し接続点部を形成した電動機の固定子において、前記接続点部を絶縁する絶縁部材は薄板状の絶縁フィルムを筒状に巻いた筒状絶縁部材であり、前記筒状絶縁部材の略中央部には、間を有して２箇所の溶着部を設け、前記溶着部と溶着部との間をふたつ折りに折り曲げて、前記筒状絶縁部材の両端の開口部より巻線端同士または巻線端とリード線の端部とを接続した接続点部を挿入し固定子の巻線上部に固定した電動機とする。特に、前記筒状絶縁部材は固定子歯部に直接巻線が巻き付けられた集中巻き方式の電動機に用いる。 A winding is provided in a slot of the stator of the electric motor, and the winding end of the winding is drawn out from the slot of the stator and connects the winding ends or the winding end and the end of the lead wire. In the formed stator of the electric motor, the insulating member that insulates the connection point is a cylindrical insulating member in which a thin insulating film is wound in a cylindrical shape, and a substantially central portion of the cylindrical insulating member has a gap therebetween. And provided with two welded portions, folded between the welded portion and the welded portion in two, and the winding ends or between the winding ends and the lead wires from the openings at both ends of the cylindrical insulating member. An electric motor in which a connecting point connected to the end is inserted and fixed to the upper part of the stator winding is used. In particular, the cylindrical insulating member is used for a concentrated winding type motor in which a winding is wound directly around a stator tooth portion.

電動機の固定子のスロットから引出された巻線端部は、巻線端同士或いは、巻線端とリード線と接続し接続点を形成されている。この接続点を薄板状の絶縁フィルムを筒状に巻いた筒状絶縁部材で絶縁している。この筒状絶縁部材の略中央部には、間を有して２箇所の溶着部が形成されており、この２箇所の溶着部の間をふたつ折りに折り曲げることにより、例えば、接続部の先端が半田、溶接、或いはカシメ等の仕上がり状態が悪くて鋭い突起を生じた場合でも、接続点の先端部分を支点として筒状絶縁部材を折り曲げることが無いため筒状絶縁部材を突き破り絶縁不良となることが無くなる。 The winding ends drawn from the slots of the stator of the electric motor are connected to each other or between the winding ends and the lead wires to form connection points. This connection point is insulated by a cylindrical insulating member obtained by winding a thin insulating film in a cylindrical shape. A substantially central portion of the cylindrical insulating member, the welding portion of the two portions are formed to have between, by bending between the weld portion of the two places folding two, for example, the distal end of the connecting portion However, even if the finished state of solder, welding, caulking, etc. is bad and sharp projections are generated, the cylindrical insulating member is not bent using the tip of the connection point as a fulcrum, resulting in poor insulation by breaking through the cylindrical insulating member Things will disappear.

尚、筒状絶縁部材の略中央部には、間を有して２箇所の溶着部分を設け、この２箇所の溶着部の間をふたつ折りにすることにより、筒状絶縁部材の両端の開口部から巻線端同士、または巻線端とリード線の接続点部分を投入することができるため、接続点がバラバラになることが無く一体化することができ、また絶縁部材の個数を低減することができる。 Note that the substantially central portion of the cylindrical insulating member, has between providing a welding portion of the two positions, by the folding two between the weld portion of the two positions, open at both ends of the cylindrical insulating member Since the winding ends can be inserted from each other, or the connection points of the winding ends and lead wires can be inserted, the connection points can be integrated without being separated, and the number of insulating members can be reduced. be able to.

特に、固定子歯部に直接巻線を巻き付けた集中巻方式の電動機の場合、各相を繋ぐ渡り線の処理が頓雑と成るため、固定子の各歯部単位毎に直接巻線が巻き付けられ、巻き始めと巻き終わりの２個所から巻線端が引出されている。一方の巻線端は外部端子と接続するためのリード線と接続し、他方の巻線端は中性点（Y結線の場合）を形成しているため接続点個所が多くなる。   In particular, in the case of a concentrated winding type motor in which windings are wound directly around the stator teeth, the processing of the connecting wires connecting each phase becomes complicated, so the winding is wound directly on each tooth unit of the stator. The winding ends are drawn out from two places, the winding start and winding end. One winding end is connected to a lead wire for connection to an external terminal, and the other winding end forms a neutral point (in the case of Y connection), so the number of connection points increases.

従って、この筒状絶縁部材の略中央部には、間を有して２箇所の溶着部分を設け、この２箇所の溶着部分の間をふたつ折りすることにより、筒状絶縁部材の両端の開口部から接続点を挿入することにより絶縁部材の個数を低減することができる。また、固定子の巻線上の狭いスペースでも絶縁部材がバラバラにならずに容易に固定することができる。 Therefore, a substantially central portion of this tubular insulating member, has between providing a welding portion of the two positions, by folding two between the welding portion of the two locations, both ends of the tubular insulating member By inserting connection points from the openings, the number of insulating members can be reduced. Further, the insulating member can be easily fixed without being separated even in a narrow space on the stator winding.

本発明の実施例について図面を用いて説明する。図１には、電動機の固定子１の歯部２に直接巻線３が巻き付けられた集中巻き方式の電動機である。固定子１のスロット数は、６スロットであり、スロット１７には樹脂絶縁４が施され巻線３が直接巻き付けられ三相４極２Y結線を構成している。図１の各歯部２に巻かれた巻線３は、巻き始めと巻き終わりで２個所から巻線端が引出されている。一方の巻線端は、外部端子と接続するリード線６に接続され、他方の巻線端は中性点１０に接続されている。   Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a concentrated winding type electric motor in which a winding 3 is directly wound around a tooth portion 2 of a stator 1 of the electric motor. The number of slots of the stator 1 is six, and the resin insulation 4 is applied to the slot 17 and the winding 3 is directly wound to form a three-phase four-pole 2Y connection. The winding 3 wound around each tooth portion 2 in FIG. 1 has its winding ends drawn out from two places at the start and end of winding. One winding end is connected to a lead wire 6 connected to an external terminal, and the other winding end is connected to a neutral point 10.

図１に示しているように、U、V、W相の各スロット１７から引出された巻線端の一方は、外部端子と接続するリード線６に接続され筒状絶縁部材５の両端部の開口部から接続点１６部分をそれぞれ挿入し絶縁している。また、他方から引出された各巻線端は一箇所にまとめられ１つの接続点１６として、前記同様に筒状絶縁部材５の端部の開口部から接続点１６部分が挿入され絶縁している。   As shown in FIG. 1, one of the winding ends drawn from the U, V, and W phase slots 17 is connected to a lead wire 6 connected to an external terminal, and is connected to both ends of the cylindrical insulating member 5. The connection point 16 part is inserted and insulated from the opening. Further, the winding ends drawn from the other are gathered at one place, and as one connection point 16, the connection point 16 portion is inserted and insulated from the opening of the end portion of the cylindrical insulating member 5 as described above.

図２には、図１で説明した筒状絶縁部材５を示している。
筒状絶縁部材５は、絶縁部材の板厚は、ｔ０．０５０〜ｔ０．０７５のポリエステルフィルム等を使用している。この薄板のポリエステルフィルムにより絶縁強度を維持するために、例えば、この薄板のポリエステルフィルムを筒状に４回〜５回巻き、接続点１６部分の仕上がり径を考慮し筒状絶縁部材５の内径をφ５程度になるようにしている。この薄板のポリエステルフィルムを４回〜５回巻くことにより接続点１６の絶縁強度を維持することができる。尚、薄板状の絶縁フィルムはポリエステルフィルムに限定するものでなく、接続点１６部分の絶縁が行えるフィルム状の絶縁部材であればよい。 FIG. 2 shows the cylindrical insulating member 5 described in FIG.
The tubular insulating member 5 uses a polyester film having a thickness of t0.050 to t0.075. In order to maintain the insulation strength with this thin polyester film, for example, the thin polyester film is wound into a cylindrical shape four to five times, and the inner diameter of the cylindrical insulating member 5 is set in consideration of the finished diameter of the connection point 16 portion. It is about φ5. The insulation strength of the connection point 16 can be maintained by winding the thin polyester film 4 to 5 times. The thin plate-like insulating film is not limited to the polyester film, and may be a film-like insulating member that can insulate the connection point 16 portion.

また、筒状絶縁部材５をｔ０．０５０〜ｔ０．０７５の薄板状の絶縁フィルムを４回〜５回巻き付け筒状絶縁部材５の内径をφ５程度とすることは、電動機の絶縁破壊電圧に耐えうる厚さとするためである。尚、この絶縁部材の総板厚としては、ｔ０．２〜ｔ０．３７５と成るが、この板厚のまま使用した場合、板厚が厚いため絶縁部材を筒状に仕上げることができない。また、絶縁部材の板厚が厚いため腰が強すぎて固定子１の巻線３上部に固定することもできない。従って、前記に説明したような薄板状の絶縁フィルムを筒状に巻いた筒状絶縁部材とすることにより容易に絶縁部材を作成することができ、或いは、固定子１の巻線３上部に容易に固定することもできる。   In addition, the cylindrical insulating member 5 is wound 4 to 5 times with a thin insulating film of t0.050 to t0.075 so that the inner diameter of the cylindrical insulating member 5 is about φ5, which can withstand the dielectric breakdown voltage of the motor. This is to obtain a thick thickness. The total thickness of the insulating member is t0.2 to t0.375. However, when the plate is used with this thickness, the insulating member cannot be finished in a cylindrical shape because the plate is thick. Further, since the insulating member is thick, the waist is too strong to be fixed to the upper part of the winding 3 of the stator 1. Therefore, an insulating member can be easily created by forming a thin insulating plate film as described above into a cylindrical insulating member, or can be easily formed on the upper part of the winding 3 of the stator 1. It can also be fixed to.

また、図２の筒状絶縁部材５の略中央部には、間を有して２箇所の溶着部５ａ、５ｂを設けている。この溶着部５ａと溶着部５ｂとの間をふたつ折りに折り曲げて図３のような構造としている。この筒状絶縁部材５の両端の開口部より前記接続点１６部分が挿入される。このような絶縁構造とすることにより、巻線端同士或いは巻線端とリード線６とを接続した際、例えば接続点１６の仕上がり状況が悪くて接続部の先端に突起を生じた場合でも、接続点１６の先端部分を支点として筒状絶縁部材５を折り曲げることがないため筒状絶縁部材５を突き破り絶縁不良となることも無くなる。尚、溶着部５ａと溶着部５ｂとの間をふたつ折りに折り曲げることで、筒状絶縁部材５の端部の開口部が一方向に向くことになり接続点１６部分を挿入し易くなり、巻線端部やリード線の無駄な引き廻しを無くすことができる。これにより固定子１の巻線３上部に容易に筒状絶縁部材５を固定することができる。 Further, a substantially central portion of the tubular insulating member 5 in FIG. 2, the welded portion 5a of the two positions have between, it is provided 5b. The welded portion 5a and the welded portion 5b are folded in two so as to have a structure as shown in FIG. The connecting point 16 portion is inserted from the openings at both ends of the cylindrical insulating member 5. By having such an insulating structure, when connecting the winding ends or the winding ends and the lead wire 6, for example, even when the finish of the connection point 16 is bad and a protrusion is generated at the tip of the connection portion, Since the cylindrical insulating member 5 is not bent with the tip portion of the connection point 16 as a fulcrum, there is no possibility of breaking through the cylindrical insulating member 5 and causing poor insulation. In addition, by folding the gap between the welded portion 5a and the welded portion 5b in two, the opening at the end of the cylindrical insulating member 5 faces in one direction, making it easy to insert the connection point 16 portion. Unnecessary routing of wire ends and lead wires can be eliminated. Thereby, the cylindrical insulating member 5 can be easily fixed to the upper part of the winding 3 of the stator 1.

また、図２及び図３に示した筒状絶縁部材５は、略中央部に間を有して２箇所を溶着している。この筒状絶縁部材５の略中央部の間を有した２箇所の溶着部分５ａ、５ｂは超音波直接溶着法であるが、圧着、熱溶着等でも同様の効果を得ることが出きる。 Further, the tubular insulating member 5 shown in FIGS. 2 and 3 are welded two places have between a substantially central portion. The two welded portions 5a and 5b having a substantially central portion of the cylindrical insulating member 5 are the ultrasonic direct welding methods, but the same effect can be obtained even by pressure bonding, heat welding, or the like.

本実施形態の３相４極２Y結線の場合、通常、接続点１６部としてはU相、V相、W相のリード線６と接続する３個所と、中性点１個所の計４箇所必要となるが、１つの絶縁部材に接続点１６を２個所挿入できる本実施形態の筒状絶縁部材５では、２個用いればよいことになり絶縁部材を低減することができる。また、固定子１の巻線３上部に筒状絶縁部材５を固定する際にも２個の接続点１６が一体化した絶縁部材であるので固定子１の巻線３上部に固定する作業も容易となり、絶縁部材を固定するスペースも大きく確保することができる。   In the case of the three-phase four-pole 2Y connection of this embodiment, normally, the connection point 16 part requires four points in total, that is, three points connected to the U-phase, V-phase, and W-phase lead wires 6 and one neutral point. However, in the cylindrical insulating member 5 of this embodiment in which two connection points 16 can be inserted into one insulating member, it is sufficient to use two, and the insulating members can be reduced. Also, when the cylindrical insulating member 5 is fixed to the upper part of the winding 3 of the stator 1, the two connecting points 16 are an integrated insulating member. It becomes easy and a large space for fixing the insulating member can be secured.

筒状絶縁部材５を固定子１の巻線３上部に固定する場合は、図４で示しているように固定子１のスロット１７及び歯部２に樹脂絶縁４が施され、このスロット１７及び歯部２に直接巻線３が集中巻きされている。この固定子１の巻線３上部に前記筒状絶縁部材５を配置し樹脂絶縁カバー２０で押さえ込み筒状絶縁部材５が動かないようにしている。本実施形態では樹脂絶縁カバー２０はスロット１７及び歯部２に施された樹脂絶縁４と係り止めし固定されている。尚、図４の筒状絶縁部材５の固定方法以外に、巻線３上部を結束する結束糸で固定する方法等もある。   When the cylindrical insulating member 5 is fixed to the upper part of the winding 3 of the stator 1, as shown in FIG. 4, the resin insulation 4 is applied to the slots 17 and the teeth 2 of the stator 1. The winding 3 is directly wound around the tooth portion 2. The cylindrical insulating member 5 is disposed on the upper portion of the winding 3 of the stator 1 and is pressed by a resin insulating cover 20 so that the cylindrical insulating member 5 does not move. In the present embodiment, the resin insulation cover 20 is locked and fixed to the resin insulation 4 applied to the slot 17 and the tooth portion 2. In addition to the method for fixing the cylindrical insulating member 5 in FIG. 4, there is a method for fixing the upper part of the winding 3 with a binding yarn for binding.

また、特に、このように固定子１の歯部２に直接巻線３が巻き付けられた集中巻き方式の電動機においては、各歯部２から引出された渡り線の処理が頓雑になり巻線３同士が接触し絶縁不良とならないように、各歯部２から引出された巻線端の巻き始めと巻き終わりの２個所に引出し線絶縁チューブ等を被せ絶縁している。   In particular, in the concentrated winding type motor in which the winding 3 is directly wound around the tooth portion 2 of the stator 1 as described above, the processing of the connecting wire drawn from each tooth portion 2 becomes complicated and the winding is performed. In order to prevent the three from contacting each other and resulting in poor insulation, the lead wire insulation tube or the like is covered and insulated at two places at the winding start and winding end of the winding end drawn from each tooth portion 2.

各歯部２から引出された巻線端の一方は外部端子と接続するリード線６に接続し、他方の巻線端は直接、中性点１０（２Y結線の場合）を形成するか、または巻線端同士を接続（Y結線の場合）し中間接続点１６（ジョイント部）を形成している。このため接続点１６の個所が多く成っている。   One of the winding ends drawn from each tooth portion 2 is connected to the lead wire 6 connected to the external terminal, and the other winding end directly forms a neutral point 10 (in the case of 2Y connection), or The winding ends are connected (in the case of Y connection) to form an intermediate connection point 16 (joint portion). For this reason, there are many connection points 16.

このような場合、この筒状絶縁部材５の略中央部には、間を有して２箇所の溶着部分５ａ、５ｂを設け、この２箇所の溶着部分５ａ、５ｂの間をふたつ折りにし両端の開口部から接続点１６を挿入することができる筒状絶縁部材５を用いることにより絶縁部材の個数を低減することができる。また、これにより固定子１の巻線３上のスペースも広く取ることができ接続点１６を容易に固定することができる。 In such a case, the substantially central portion of the tubular insulating member 5 of this, the welding portions 5a of the two locations have between, provided 5b, welded portion 5a of the two places, 5b between the folding two The number of insulating members can be reduced by using the cylindrical insulating member 5 into which the connection points 16 can be inserted from the openings at both ends. This also allows a large space on the winding 3 of the stator 1 so that the connection point 16 can be easily fixed.

電動機の固定子のリード線固定部分の部分拡大図。The elements on larger scale of the lead wire fixing | fixed part of the stator of an electric motor. 筒状絶縁部材を説明するための図。The figure for demonstrating a cylindrical insulation member. 図２の筒状絶縁部材を電動機に用いる際のふたつ折りにした図。The figure which carried out the double fold at the time of using the cylindrical insulating member of FIG. 2 for an electric motor. 筒状絶縁部材を電動機の固定子に樹脂カバーにより固定した図。The figure which fixed the cylindrical insulating member to the stator of the electric motor with the resin cover. 従来の実施形態図。FIG. 別の従来の実施形態図。Another conventional embodiment figure.

１・・・固定子、２・・・歯部，３・・・巻線，４・・・樹脂絶縁、５・・・筒状絶縁部材、５ａ、５ｂ・・・溶着部、６、６ａ・・・リード線、７・・・U相、８・・・V相、９・・・W相、１０・・・中性点、１１ａ、１１ｂ・・・絶縁チューブ、１２・・・コイルエンド、１３・・・結束糸、１４・・・巻線端、１５・・・折り返し部、１６、１６ａ
・・・接続点、１７・・・スロット、２０・・・樹脂絶縁カバー。 DESCRIPTION OF SYMBOLS 1 ... Stator, 2 ... Tooth part, 3 ... Winding, 4 ... Resin insulation, 5 ... Cylindrical insulation member, 5a, 5b ... Welding part, 6, 6a ..Lead wire, 7 ... U phase, 8 ... V phase, 9 ... W phase, 10 ... neutral point, 11a, 11b ... insulating tube, 12 ... coil end, 13 ... Bundling yarn, 14 ... winding end, 15 ... folded portion, 16, 16a
... Connection point, 17 ... Slot, 20 ... Resin insulation cover.

Claims (2)

固定子のスロットに巻線を有し、前記巻線の巻線端は固定子のスロットから引出され巻線端同士または巻線端とリード線の端部とを接続し接続点部を形成した電動機の固定子において、前記接続点部を絶縁する絶縁部材は薄板状の絶縁フィルムを筒状に巻いた筒状絶縁部材であり、前記筒状絶縁部材の略中央部には、間を有して２箇所の溶着部を設け、前記溶着部と溶着部との間をふたつ折りに折り曲げて、前記筒状絶縁部材の両端の開口部より前記接続点部を挿入し固定子の巻線上部に固定したことを特徴とする電動機。 The stator has a winding in the slot, and the winding end of the winding is drawn out from the stator slot, and the connecting ends are formed by connecting the winding ends or the winding end and the end of the lead wire. in the stator of the motor, the insulating member for insulating the connection point unit is a cylindrical insulating member wound with thin plate-like insulation film into a tubular shape, a substantially central portion of the tubular insulating member has between Te provided welded portion of the two positions, between the welded portion and the welding portion by bending the fold two, the winding upper portion of the tubular insulating insert stator the connection point portion than the opening portions at both ends of the member An electric motor characterized by being fixed. 前記筒状絶縁部材は、固定子歯部に直接巻線が巻き付けられた集中巻き方式の電動機に用いたことを特徴とする請求項１記載の電動機。 2. The electric motor according to claim 1, wherein the cylindrical insulating member is used in a concentrated winding type electric motor in which a winding is directly wound around a stator tooth portion.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850202A (en) * 1971-10-26 1973-07-16
JP2001286086A (en) * 2000-03-30 2001-10-12 Matsushita Electric Ind Co Ltd Motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850202A (en) * 1971-10-26 1973-07-16
JP2001286086A (en) * 2000-03-30 2001-10-12 Matsushita Electric Ind Co Ltd Motor

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