JP2018074848A - Permanent magnet type rotary electric machine, and compressor employing the same - Google Patents

Permanent magnet type rotary electric machine, and compressor employing the same Download PDF

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JP2018074848A
JP2018074848A JP2016215077A JP2016215077A JP2018074848A JP 2018074848 A JP2018074848 A JP 2018074848A JP 2016215077 A JP2016215077 A JP 2016215077A JP 2016215077 A JP2016215077 A JP 2016215077A JP 2018074848 A JP2018074848 A JP 2018074848A
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permanent magnet
rotary electric
electric motor
magnet type
type rotary
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JP2018074848A5 (en
JP6578267B2 (en
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太田　裕樹
Hiroki Ota
裕樹 太田
明和 柴田
Akikazu Shibata
明和 柴田
義武 二宮
Yoshitake Ninomiya
義武 二宮
晃平 横山
Kohei Yokoyama
晃平 横山
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Hitachi Johnson Controls Air Conditioning Inc
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Hitachi Johnson Controls Air Conditioning Inc
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Priority to JP2016215077A priority Critical patent/JP6578267B2/en
Priority to PCT/JP2017/034882 priority patent/WO2018083916A1/en
Priority to TW106137693A priority patent/TWI663814B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Abstract

PROBLEM TO BE SOLVED: To attain assemblability improvement and reliability improvement in a permanent magnet type rotary electric machine and a compressor employing the same.SOLUTION: The present invention relates to a permanent magnet type rotary electric machine composed of a rotor 8 and a stator 1. The stator 1 comprises: a substantially annular stator core 7; multiple slot parts 2 that are provided at an inner peripheral side of the stator core; multiple teeth 5 that are provided at the inner peripheral side of the stator core; multiple armature winding wires 6 that are configured by winding a coil around the teeth; and a resin inter-phase insulation sheet 10 which is disposed between the armature winding wires and insulates both the winding wires. The permanent magnet type rotary electric machine is characterized in that the inter-phase insulation sheet includes a notch 12 at a distal end side in an insertion direction.SELECTED DRAWING: Figure 3B

Description

本発明は、永久磁石式回転電動機およびこれを用いた圧縮機に関する。   The present invention relates to a permanent magnet type rotary electric motor and a compressor using the same.

永久磁石式回転電機およびこれを用いた圧縮機の従来技術としては、例えば特許文献１に記載のものがある。   As a prior art of a permanent magnet type rotary electric machine and a compressor using the permanent magnet type rotating machine, there is one disclosed in Patent Document 1, for example.

特許文献１に記載の電動機は、同文献の要約書で「端部絶縁部材２０の少なくとも一方には、第１の部材３０の周方向両端部に段差部３１と切欠部３２（案内部）が形成されている。第１の巻線絶縁部材７０は、切欠部３２により案内されてスロット１５内に挿入され、段差部３１によってスロット１５内に固定される。」と説明されるように、固定子鉄心（同文献中では「ステータコア１０」）の軸方向両端に配したインシュレータ（同文献中では「端部絶縁部材２０」）に段差を設け、これを案内部（同文献中では「切欠部３２」）とすることで、相間絶縁シート（同文献中では「第１の巻線絶縁部材７０」）をガイドしながら容易に挿入でき、電動機製作時の組立性向上に効果が得られるとしている（同文献の図２、図３、図５、図６など参照）。   The electric motor described in Patent Document 1 is described in the abstract of the same document as “at least one end insulating member 20 has a step portion 31 and a notch portion 32 (guide portion) at both ends in the circumferential direction of the first member 30. The first winding insulating member 70 is guided by the notch 32 and inserted into the slot 15, and is fixed in the slot 15 by the step portion 31. " A step is provided in an insulator (“end insulating member 20” in the same document) disposed at both axial ends of the core (“stator core 10” in the same document), and this is provided as a guide portion (“notch” in the same document). 32 ”), the interphase insulating sheet (“ first winding insulating member 70 ”in the same document) can be easily inserted while guiding, and the effect of improving the assemblability at the time of manufacturing the motor can be obtained. (FIGS. 2, 3, 5, and 6 of the same document) Throat reference).

特開２０１２-５５０９８号公報JP 2012-55098 A

しかし、特許文献１の構成では、同文献の図２、図３などに示されるように、インシュレータにガイド部が必要となり、この部分が薄肉部となるため、主に樹脂成型されるインシュレータの成型性が悪化するという問題がある。また、インシュレータに設けたガイド部からの挿入性を向上させた分、そのガイド部からの相間絶縁シートの脱落も発生しやすくなり、ガイド部が相間絶縁シートの保持性の悪化を招くといった問題もある。   However, in the configuration of Patent Document 1, as shown in FIG. 2 and FIG. 3 of the same document, a guide portion is required for the insulator, and this portion becomes a thin portion. There is a problem that the sex gets worse. In addition, since the insertability from the guide portion provided in the insulator is improved, the interphase insulating sheet is likely to drop off from the guide portion, and there is a problem that the guide portion causes deterioration of the retainability of the interphase insulating sheet. is there.

そこで、本発明では、インシュレータに案内部を配さずとも、相間絶縁シートの挿入性を向上させ、永久磁石式回転電動機の組立性向上を達成することを目的とする。   Therefore, an object of the present invention is to improve the insertability of the interphase insulating sheet and achieve the improved assembling property of the permanent magnet type rotary electric motor without arranging the guide portion in the insulator.

また、本発明の別の目的としては、組立てた後の相間絶縁シートの保持性を向上させ、相間絶縁シートが抜け落ち難くすることで、永久磁石式回転電動機の信頼性を向上させることを目的とする。   Another object of the present invention is to improve the reliability of the permanent magnet type rotary electric motor by improving the retainability of the interphase insulating sheet after assembly and making it difficult for the interphase insulating sheet to come off. To do.

上記目的を達成するため本発明の永久磁石式回転電動機は、回転子と固定子から構成され、前記固定子は、略環状の固定子鉄心と、該固定子鉄心の内周側に設けられた複数のスロット部と、前記固定子鉄心の内周側に設けられた複数のティース部と、各々のティース部にコイルを巻き回した複数の電機子巻線と、各々の電機子巻線間に配置され、両者を絶縁する樹脂製の相間絶縁シートと、からなり、該相間絶縁シートは、挿入方向の先端側に切り欠きを有しているものとした。   In order to achieve the above object, a permanent magnet type rotary electric motor of the present invention comprises a rotor and a stator, and the stator is provided on a substantially annular stator core and an inner peripheral side of the stator core. A plurality of slot portions, a plurality of tooth portions provided on the inner peripheral side of the stator core, a plurality of armature windings in which a coil is wound around each tooth portion, and between the armature windings The interphase insulating sheet is disposed and insulates both, and the interphase insulating sheet has a notch on the distal end side in the insertion direction.

また、回転子と固定子から構成され、前記固定子は、略環状の固定子鉄心と、該固定子鉄心の内周側に設けられた複数のティース部と、前記固定子鉄心の内周側に設けられた複数のスロット部と、各々のティース部にコイルを巻き回した複数の電機子巻線と、各々の電機子巻線間に配置され、両者を絶縁する樹脂製の相間絶縁シートと、からなり、前記相間絶縁シートは、四箇所以上の折り目を有する断面形状を有しているものとした。   The stator includes a rotor and a stator, and the stator includes a substantially annular stator core, a plurality of teeth provided on an inner peripheral side of the stator core, and an inner peripheral side of the stator core. A plurality of slot portions provided in each of the plurality of armature windings in which a coil is wound around each of the tooth portions, and a resin-made interphase insulating sheet disposed between the armature windings to insulate them. The interphase insulating sheet has a cross-sectional shape having four or more folds.

本発明によれば、相間絶縁シートの挿入性を向上させ、永久磁石式回転電動機の組立性向上を達成することができる。   ADVANTAGE OF THE INVENTION According to this invention, the insertability of a phase insulation sheet can be improved and the assembly property improvement of a permanent magnet type rotary electric motor can be achieved.

また、相間絶縁シートが抜け落ち難くすることができ、信頼性を向上させることができる。   Moreover, the interphase insulating sheet can be made difficult to come off, and the reliability can be improved.

一実施例の圧縮機の断面図Sectional view of compressor of one embodiment 一実施例の回転電動機の固定子の拡大上面図The enlarged top view of the stator of the rotary electric motor of one Example 図２ＡのＤ部拡大図Part D enlarged view of FIG. 2A 一実施例の相間絶縁シートの斜視図The perspective view of the phase insulation sheet of one Example 一実施例の相間絶縁シートの固定子への挿入中の斜視図The perspective view in the middle of insertion to the stator of the phase insulation sheet of one Example 一実施例の相間絶縁シートの固定子への挿入後の斜視図The perspective view after insertion to the stator of the phase insulation sheet of one Example 一実施例の相間絶縁シートの断面図Sectional drawing of the phase insulation sheet of one Example 一実施例の相間絶縁シートの断面図Sectional drawing of the phase insulation sheet of one Example 一実施例の相間絶縁シートの断面図Sectional drawing of the phase insulation sheet of one Example

以下、本発明の圧縮機、および、それに用いる回転電動機の具体的実施例を、図面に基づいて説明する。   Hereinafter, specific examples of the compressor of the present invention and the rotary electric motor used therein will be described with reference to the drawings.

先ず、図１の断面図を用いて、本実施例の永久磁石式回転電動機を適用した圧縮機２００の概要を説明する。ここに示すように、本実施例の圧縮機２００は、圧縮容器でもあるケーシング２０４の内部に、圧縮機構部２０１と、駆動軸２０２と、回転電動機部２０３とを設けており、また、回転電動機部２０３の下方に図示しない電源線を設けている。回転電動機部２０３は、外周側の固定子１と内周側の回転子８から構成された永久磁石式回転電動機であり、回転子８を回転させたときに、回転子８と一体化した駆動軸２０２が回転し、駆動軸２０２先端の圧縮機構部２０１で冷媒を圧縮する。   First, an outline of a compressor 200 to which the permanent magnet type rotary electric motor of the present embodiment is applied will be described using the cross-sectional view of FIG. As shown here, the compressor 200 of this embodiment is provided with a compression mechanism section 201, a drive shaft 202, and a rotary motor section 203 inside a casing 204 that is also a compression container. A power line (not shown) is provided below the unit 203. The rotary electric motor unit 203 is a permanent magnet type rotary electric motor composed of a stator 1 on the outer peripheral side and a rotor 8 on the inner peripheral side, and is a drive integrated with the rotor 8 when the rotor 8 is rotated. The shaft 202 rotates and the refrigerant is compressed by the compression mechanism 201 at the tip of the drive shaft 202.

ここで、回転電動機部２０３は、冷媒が循環するケーシング２０４の内部に位置しているため、回転電動機部２０３を構成する諸部品も、冷媒の流れによる力が作用することになる。本実施例では、固定子１に挿入する相間絶縁シート１０を、図２〜図４のように構成することで、冷媒の流れが相間絶縁シート１０に作用したとしても、これに耐え得る構成とした。   Here, since the rotary electric motor unit 203 is located inside the casing 204 through which the refrigerant circulates, the components of the rotary electric motor unit 203 are also acted on by the flow of the refrigerant. In this embodiment, the interphase insulating sheet 10 to be inserted into the stator 1 is configured as shown in FIGS. 2 to 4, so that even if the flow of the refrigerant acts on the interphase insulating sheet 10, the structure can withstand this. did.

次に、図２Ａと図２Ｂを用いて、固定子１内の相間絶縁シート１０を詳細に説明する。   Next, the interphase insulating sheet 10 in the stator 1 will be described in detail with reference to FIGS. 2A and 2B.

図２Ａは、回転電動機部２０３の固定子１を上方から見た拡大上面図であり、ここに示すように、略環状の固定子鉄心７の内周側には、スロット部２とティース部５が交互に配置されている。また、各々のティース部５にコイルを巻き回すことで複数の電機子巻線６が形成されている。電機子巻線６とティース部５は樹脂製のスロット絶縁シート３で絶縁されており、また、電機子巻線６同士は樹脂製の相間絶縁シート１０で絶縁されている。   FIG. 2A is an enlarged top view of the stator 1 of the rotary electric motor unit 203 as viewed from above. As shown here, the slot portion 2 and the teeth portion 5 are provided on the inner peripheral side of the substantially annular stator core 7. Are arranged alternately. A plurality of armature windings 6 are formed by winding a coil around each of the teeth portions 5. The armature winding 6 and the tooth portion 5 are insulated by a resin slot insulating sheet 3, and the armature windings 6 are insulated by a resin interphase insulating sheet 10.

次に、図２Ｂを用いて、スロット部２内でのスロット絶縁シート３と相間絶縁シート１０の配置を更に詳細に説明する。図２Ｂは、図２ＡのＤ部の拡大図であり、ここに示すように、固定子鉄心７の内面に沿ってスロット絶縁シート３が配置されている。スロット絶縁シート３は、スロット部２の中心付近で分離した１枚の絶縁シートであり、その両端の各々を内側に屈曲させて案内部３ａを形成している。   Next, the arrangement of the slot insulating sheet 3 and the interphase insulating sheet 10 in the slot portion 2 will be described in more detail with reference to FIG. 2B. FIG. 2B is an enlarged view of a portion D in FIG. 2A, and the slot insulating sheet 3 is arranged along the inner surface of the stator core 7 as shown here. The slot insulating sheet 3 is a single insulating sheet separated in the vicinity of the center of the slot portion 2, and both ends thereof are bent inward to form a guide portion 3a.

一方、相間絶縁シート１０は、その両端の各々を外側に屈曲させるとともに、各々の先端をスロット絶縁シート３と電機子巻線６で挟むことで、固定子１の半径方向への移動を防止している。また、相間絶縁シート１０の上方に、樹脂製のインシュレータ４を配置することで、相間絶縁シート１０がスロット部２の上方に脱落するのを防止している。   On the other hand, the interphase insulating sheet 10 is bent outward at both ends, and sandwiched between the respective ends of the insulating sheet 10 by the slot insulating sheet 3 and the armature winding 6, thereby preventing the stator 1 from moving in the radial direction. ing. Further, by disposing the resin insulator 4 above the interphase insulating sheet 10, the interphase insulating sheet 10 is prevented from dropping above the slot portion 2.

次に、図３Ａから図３Ｃを用いて、本実施例の相間絶縁シート１０の形状と、固定子１への装着方法を説明する。   Next, the shape of the interphase insulating sheet 10 of the present embodiment and the method of mounting it on the stator 1 will be described with reference to FIGS. 3A to 3C.

図３Ａは、固定子１に挿入する前の相間絶縁シート１０の斜視図である。ここに示すように、相間絶縁シート１０は、固定子１にを挿入する際の組立性を向上するために、短手方向の両端部に切り欠き１２を有している。この切り欠き１２は、長手方向の一方（図３Ａでは下側）のみに配し、他方（図３Ａでは上側）は切り欠き１２を設けずに角部１３としている。なお、切り欠き１２は、短手方向両端の最外部に位置する折り目近傍まで切り欠いたものである。   FIG. 3A is a perspective view of the interphase insulating sheet 10 before being inserted into the stator 1. As shown here, the interphase insulating sheet 10 has notches 12 at both ends in the short direction in order to improve the assemblability when the stator 1 is inserted. This notch 12 is arranged only on one side in the longitudinal direction (lower side in FIG. 3A), and the other (upper side in FIG. 3A) is a corner 13 without providing the notch 12. Note that the notch 12 is notched to the vicinity of the fold located at the outermost part at both ends in the short direction.

また、図３Ｂは、相間絶縁シート１０を固定子１に挿入している途中の状態を示す斜視図である。なお、ここでは、電機子巻線６を省略している。ここに示すように、相間絶縁シート１０を固定子１に装着するときには、相間絶縁シート１０の切り欠き１２側を固定子１へ挿入する際の挿入側とするとともに、内周側を幅方向に潰し案内部３ａに沿わせながらスロット部２に挿入することで、容易に固定子１へ挿入することができる。このように、本実施例によれば、インシュレータ４に相間絶縁シート挿入用のガイドを配して成形性を悪化させることなく、固定子１への挿入を容易とすることができる。   FIG. 3B is a perspective view showing a state in the middle of inserting the interphase insulating sheet 10 into the stator 1. Here, the armature winding 6 is omitted. As shown here, when the interphase insulating sheet 10 is attached to the stator 1, the notch 12 side of the interphase insulating sheet 10 is set as an insertion side when inserting into the stator 1, and the inner peripheral side is set in the width direction. It can be easily inserted into the stator 1 by being inserted into the slot portion 2 along the crushing guide portion 3a. As described above, according to the present embodiment, the insulator 4 can be easily inserted into the stator 1 without deteriorating the formability by providing the insulator 4 with the guide for inserting the interphase insulating sheet.

つまり、相間絶縁シート１０に切り欠き１２を設けたことにより、相間絶縁シート１０は先細り形状となっているため、スロット部２に挿入し易く、切り欠き１２を有する先端部が入った状態で押し込むことで、スロット部２の奥まで簡単に案内することができる。特に、切り欠き１２の形状を、段差形状ではなく傾斜形状としたため、先端部を挿入した後、そのまま奥に差し込むように力を加えるだけで容易にスロット部２の奥まで案内することができる。   That is, by providing the notch 12 in the interphase insulating sheet 10, the interphase insulating sheet 10 has a tapered shape. Therefore, the interphase insulating sheet 10 is easy to insert into the slot portion 2, and is pushed in with the tip having the notch 12 inserted. Thus, it is possible to easily guide to the back of the slot portion 2. In particular, since the shape of the notch 12 is not a stepped shape but an inclined shape, it can be easily guided to the back of the slot portion 2 simply by applying a force so as to be inserted into the back as it is after the tip portion is inserted.

図３Ｃは、相間絶縁シート１０を固定子１に挿入した後の状態を示す斜視図である。なお、ここでも、電機子巻線６を省略している。図３Ｃまたは図２Ｂに示すように、相間絶縁シート１０の挿入後は、相間絶縁シート１０の上側両端の角部１３が、インシュレータ４とスロット絶縁シート３によって保持されるため、相間絶縁シート１０に上方からの冷媒流が作用した場合であっても、相間絶縁シート１０の脱落を抑制できるので、電動機としての信頼性を向上させることができる。   FIG. 3C is a perspective view showing a state after the interphase insulating sheet 10 is inserted into the stator 1. Also here, the armature winding 6 is omitted. As shown in FIG. 3C or FIG. 2B, after the interphase insulating sheet 10 is inserted, the corners 13 at the upper ends of the interphase insulating sheet 10 are held by the insulator 4 and the slot insulating sheet 3. Even when the refrigerant flow from above acts, the interphase insulating sheet 10 can be prevented from falling off, so that the reliability as an electric motor can be improved.

次に、図４Ａ〜図４Ｃを用い、相間絶縁シート１０の形状について詳細に説明する。本実施例の相間絶縁シート１０は、信頼性と保持性を向上させるために四箇所以上の折り目１１を有している。   Next, the shape of the interphase insulating sheet 10 will be described in detail with reference to FIGS. 4A to 4C. The interphase insulating sheet 10 of the present embodiment has four or more folds 11 in order to improve reliability and retainability.

上述したように、電動機が圧縮機等に使用される場合、内部において電動機の周辺やスロット部２には冷媒が流通しており、相間絶縁シート１０が抜け落ちる虞がある。また、圧縮機運転時に内部が高温となった場合に、相間絶縁シート１０がスロット部２の形状に沿って熱変形し、スロット部２の中で広がることでインシュレータ４に引っかかる部分がスロット部２内側へ引き込まれ、相間絶縁シート１０は脱落し易くなる。   As described above, when the electric motor is used for a compressor or the like, the refrigerant circulates in the periphery of the electric motor or in the slot portion 2 inside, and there is a possibility that the interphase insulating sheet 10 falls off. In addition, when the inside of the compressor becomes hot during operation of the compressor, the interphase insulating sheet 10 is thermally deformed along the shape of the slot portion 2 and spreads in the slot portion 2 so that the portion caught by the insulator 4 becomes the slot portion 2. Pulled inward, the interphase insulating sheet 10 becomes easy to drop off.

そこで、本実施例の相間絶縁シート１０では、四箇所以上の折り目を設け、予めスロット部２内で広げた形状とし、相間絶縁シート１０が熱変形しても脱落しにくくしている。   Therefore, in the interphase insulating sheet 10 of the present embodiment, four or more folds are provided and preliminarily expanded in the slot portion 2 so that the interphase insulating sheet 10 is not easily dropped even if the interphase insulating sheet 10 is thermally deformed.

例えば、図４Ａの断面図に示す七つ折りの相間絶縁シート１０は、谷折の２つの第一折り目１１ａによりインシュレータ４に引っ掛ける角部１３を構成するとともに、２つの第一折り目１１ａ間の周方向距離ｄ１よりも山折の２つの第二折り目１１ｂ間の周方向距離ｄ２を大きくすることでスロット部２の内面に引っ掛ける拡張部を形成する。これらにより、相間絶縁シート１０は、インシュレータ４側とスロット部２側の両方で保持されることになり、冷媒の流通や熱変形に起因する脱落を防止することができる。また、２つの第一折り目の間に山折の第三折り目１１ｃを設け先が尖る形状とすることで、挿入作業が更に容易になり、また、各第一折り目と第二折り目との間に谷折の第四折り目１１ｄを設けることで、インシュレータ４への引っ掛けが更に強固となる。   For example, the seven-fold interphase insulating sheet 10 shown in the cross-sectional view of FIG. 4A constitutes a corner 13 that is hooked on the insulator 4 by the two first folds 11a of the valley fold, and the circumferential direction between the two first folds 11a. By extending the circumferential distance d2 between the two second folds 11b of the mountain fold more than the distance d1, an extended portion that is hooked on the inner surface of the slot portion 2 is formed. As a result, the interphase insulating sheet 10 is held on both the insulator 4 side and the slot portion 2 side, and can be prevented from falling off due to the circulation and thermal deformation of the refrigerant. In addition, the third fold 11c of the mountain fold is provided between the two first folds, and the tip is sharpened, so that the insertion operation is further facilitated, and the valley between each first fold and the second fold is provided. By providing the fourth fold line 11d, the hook on the insulator 4 is further strengthened.

なお、２つの第二折り目１１ｂ間に形成される拡張部は、五つ折りの相間絶縁シート１０（図４Ｂ）や、四つ折りの相間絶縁シート１０（図４Ｃ）でも形成できるが、第二折り目を１つしか有さない三つ折りの相間絶縁シート（特許文献１の図５参照）では拡張部を形成することができず、スロット部２側での保持性が劣後する。   The extended portion formed between the two second folds 11b can also be formed by a five-fold interphase insulating sheet 10 (FIG. 4B) or a four-fold interphase insulating sheet 10 (FIG. 4C). In the three-fold interphase insulating sheet having only one (see FIG. 5 of Patent Document 1), the extended portion cannot be formed, and the retention on the slot portion 2 side is inferior.

以上で説明した本実施例の構成によれば、永久磁石式回転電動機の相間絶縁シート１０の固定子１への挿入を含めた組立性を向上させることができるのに加え、永久磁石式回転電動機や圧縮機の使用中の相間絶縁シート１０の脱落についての信頼性向上を図ることが可能である。   According to the configuration of the present embodiment described above, the assembly including the insertion of the interphase insulating sheet 10 of the permanent magnet type rotary motor into the stator 1 can be improved, and the permanent magnet type rotary motor can be improved. In addition, it is possible to improve the reliability of the interphase insulating sheet 10 during the use of the compressor.

１ 固定子
２ スロット部
３ スロット絶縁シート
３a 案内部
４ インシュレータ
５ ティース部
６ 電機子巻線
７ 固定子鉄心
８ 回転子
１０ 相間絶縁シート
１１ 折り目
１１ａ 第一折り目
１１ｂ 第二折り目
１１ｃ 第三折り目
１１ｄ 第四折り目
１２ 切り欠き
１３ 角部
２００ 圧縮機
２０１ 圧縮機構部
２０２ 駆動軸
２０３ 回転電動機部
２０４ ケーシング DESCRIPTION OF SYMBOLS 1 Stator 2 Slot part 3 Slot insulation sheet 3a Guide part 4 Insulator 5 Teeth part 6 Armature winding 7 Stator core 8 Rotor 10 Interphase insulation sheet 11 Fold 11a First fold 11b Second fold 11c Third fold 11d First Fourth fold 12 Notch 13 Corner portion 200 Compressor 201 Compression mechanism portion 202 Drive shaft 203 Rotating motor portion 204 Casing

Claims (6)

回転子と固定子から構成される永久磁石式回転電動機であって、
前記固定子は、
略環状の固定子鉄心と、
該固定子鉄心の内周側に設けられた複数のスロット部と、
前記固定子鉄心の内周側に設けられた複数のティース部と、
各々のティース部にコイルを巻き回した複数の電機子巻線と、
各々の電機子巻線間に配置され、両者を絶縁する樹脂製の相間絶縁シートと、からなり、
該相間絶縁シートは、挿入方向の先端側に切り欠きを有していることを特徴とする永久磁石式回転電動機。 A permanent magnet rotary electric motor composed of a rotor and a stator,
The stator is
A substantially annular stator core;
A plurality of slot portions provided on the inner peripheral side of the stator core;
A plurality of teeth provided on the inner peripheral side of the stator core;
A plurality of armature windings each having a coil wound around each tooth portion;
It is arranged between each armature winding and consists of a resin phase insulation sheet that insulates both,
The interphase insulating sheet has a notch on the leading end side in the insertion direction. 請求項１に記載の永久磁石式回転電動機において、
さらに、前記回転子鉄心の上方に樹脂製のインシュレータを有しており、
前記相間絶縁シートの挿入方向の後端側は、前記インシュレータによって保持されることを特徴とする永久磁石式回転電動機。 In the permanent magnet type rotary electric motor according to claim 1,
Furthermore, it has a resin insulator above the rotor core,
The permanent magnet rotary electric motor, wherein a rear end side of the interphase insulating sheet in the insertion direction is held by the insulator. 請求項１に記載の永久磁石式回転電動機において、
前記間絶縁シートの切り欠きは、電源線引出側に設けられていることを特徴とする永久磁石式回転電動機。 In the permanent magnet type rotary electric motor according to claim 1,
The notch of the intermediate insulating sheet is provided on the power line drawing side, and is a permanent magnet type rotary electric motor. 回転子と固定子から構成される永久磁石式回転電動機であって、
前記固定子は、
略環状の固定子鉄心と、
該固定子鉄心の内周側に設けられた複数のティース部と、
前記固定子鉄心の内周側に設けられた複数のスロット部と、
各々のティース部にコイルを巻き回した複数の電機子巻線と、
各々の電機子巻線間に配置され、両者を絶縁する樹脂製の相間絶縁シートと、からなり、
前記相間絶縁シートは、四箇所以上の折り目を有する断面形状を有していることを特徴とする永久磁石式回転電動機。 A permanent magnet rotary electric motor composed of a rotor and a stator,
The stator is
A substantially annular stator core;
A plurality of teeth provided on the inner peripheral side of the stator core;
A plurality of slot portions provided on the inner peripheral side of the stator core;
A plurality of armature windings each having a coil wound around each tooth portion;
It is arranged between each armature winding and consists of a resin phase insulation sheet that insulates both,
The interphase insulating sheet has a cross-sectional shape having four or more folds, and is a permanent magnet type rotary electric motor. 請求項４に記載の永久磁石式回転電動機において、
前記相間絶縁シートの端部の二つの折り目間の周方向距離よりも、
他の二つの折り目間の周方向距離が大きいことを特徴とする永久磁石式回転電動機。 In the permanent magnet type rotary electric motor according to claim 4,
Than the circumferential distance between two creases at the end of the interphase insulating sheet,
A permanent magnet type rotary electric motor having a large circumferential distance between the other two folds. 請求項１から請求項５の何れか一項に記載の永久磁石式回転電動機と、
該永久磁石式回転電動機の回転子とともに回転する駆動軸と、
該駆動軸の先端に設けられ、該駆動軸の回転により冷媒を圧縮する圧縮機構部と、
前記永久磁石式回転電動機、前記駆動軸、および、前記圧縮機構部を内蔵したケーシングと、
からなることを特徴とする圧縮機。 The permanent magnet type rotary electric motor according to any one of claims 1 to 5,
A drive shaft that rotates with the rotor of the permanent magnet type rotary electric motor;
A compression mechanism that is provided at the tip of the drive shaft and compresses the refrigerant by rotation of the drive shaft;
A casing incorporating the permanent magnet type rotary electric motor, the drive shaft, and the compression mechanism;
The compressor characterized by consisting of.
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