JP2021090242A - Insulation sheet, stator, and motor - Google Patents

Insulation sheet, stator, and motor Download PDF

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Publication number
JP2021090242A
JP2021090242A JP2019218094A JP2019218094A JP2021090242A JP 2021090242 A JP2021090242 A JP 2021090242A JP 2019218094 A JP2019218094 A JP 2019218094A JP 2019218094 A JP2019218094 A JP 2019218094A JP 2021090242 A JP2021090242 A JP 2021090242A
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Prior art keywords
insulating
groove
connecting member
pair
insulating sheet
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Japanese (ja)
Inventor
隆宏 檜皮
Takahiro Hiwada
隆宏 檜皮
賢勇朗 岩永
Kenyuro Iwanaga
賢勇朗 岩永
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Nidec Corp
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Nidec Corp
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Priority to JP2019218094A priority Critical patent/JP2021090242A/en
Priority to CN202011381231.3A priority patent/CN112994306A/en
Publication of JP2021090242A publication Critical patent/JP2021090242A/en
Pending legal-status Critical Current

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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
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Abstract

To provide an insulation sheet capable of improving yield and improving assemblability.SOLUTION: An insulation sheet 1231 comprises: a pair of insulation members 2A and 2B for electrically insulating coil parts; and a coupling member 1 which is formed from a member different from that of the pair of insulation members and couples the pair of insulation members with each other. The coupling member extends in a first direction dx. A first groove part is provided in the insulation member. A second groove part which is fitted with the first groove part is provided in the coupling member.SELECTED DRAWING: Figure 8

Description

本発明は、絶縁シート、ステータ、およびモータに関する。 The present invention relates to insulating sheets, stators, and motors.

従来、電気自動車、ハイブリッド車などに搭載されるモータでは、ステータに設けられたコイル部のコイルエンド間を絶縁するために絶縁シートが設けられる。絶縁シートは、コイルエンド間を絶縁するための一対の絶縁部と、当該一対の絶縁部同士を連結する連結部と、を有する場合が多い（例えば、特許文献１参照）。 Conventionally, in a motor mounted on an electric vehicle, a hybrid vehicle, or the like, an insulating sheet is provided to insulate between the coil ends of the coil portion provided on the stator. The insulating sheet often has a pair of insulating portions for insulating the coil ends and a connecting portion for connecting the pair of insulating portions (see, for example, Patent Document 1).

実開昭５８−８３９６４号公報Jikkai Sho 58-83964

ここで、原材料から絶縁シートを得る際の歩留まり向上と、絶縁シートの組み立て性向上の両立が現状、課題となっている。 Here, at present, it is an issue to improve both the yield when obtaining the insulating sheet from the raw material and the assembling property of the insulating sheet.

上記状況に鑑み、本発明は、歩留まりの向上および組み立て性の向上を可能とする絶縁シートを提供することを目的とする。 In view of the above circumstances, it is an object of the present invention to provide an insulating sheet capable of improving the yield and the assembling property.

本発明の例示的な絶縁シートは、コイル部間を電気的に絶縁するための一対の絶縁部材と、一対の前記絶縁部材とは異なる部材により形成され、一対の前記絶縁部材同士を連結する連結部材と、を有する。前記連結部材は、第１方向に延びる。前記絶縁部材には、第１溝部が設けられる。前記連結部材には、前記第１溝部と嵌め合う第２溝部が設けられる。 The exemplary insulating sheet of the present invention is formed of a pair of insulating members for electrically insulating the coil portions and a pair of members different from the insulating member, and connects the pair of the insulating members to each other. It has a member and. The connecting member extends in the first direction. The insulating member is provided with a first groove portion. The connecting member is provided with a second groove portion that fits with the first groove portion.

本発明の例示的な絶縁シートによれば、歩留まりの向上および組み立て性の向上が可能となる。 According to the exemplary insulating sheet of the present invention, it is possible to improve the yield and the assembling property.

図１は、実施形態に係る電動駆動装置の断面図である。FIG. 1 is a cross-sectional view of the electric drive device according to the embodiment. 図２は、ステータの軸方向一方側端部の斜視図である。FIG. 2 is a perspective view of one end of the stator in the axial direction. 図３は、ステータコアの斜視図である。FIG. 3 is a perspective view of the stator core. 図４は、ステータの製造方法の一例を説明するためのフローチャートである。FIG. 4 is a flowchart for explaining an example of a method for manufacturing a stator. 図５は、ステータの製造工程において成型されるコイル部の一例である。FIG. 5 is an example of a coil portion molded in the stator manufacturing process. 図６は、ステータコアにスロット紙および絶縁シートを組み付けた状態を示す図である。FIG. 6 is a diagram showing a state in which the slot paper and the insulating sheet are assembled to the stator core. 図７は、ステータの製造工程においてコイルエンドが押圧される前のステータの軸方向一方側端部の一例である。FIG. 7 is an example of an axial one-sided end of the stator before the coil end is pressed in the stator manufacturing process. 図８は、第１実施形態に係る絶縁シートの分解した状態での平面図である。FIG. 8 is a plan view of the insulating sheet according to the first embodiment in a disassembled state. 図９は、第１実施形態に係る絶縁シートの組み立て後の平面図である。FIG. 9 is a plan view of the insulating sheet according to the first embodiment after assembly. 図１０Ａは、絶縁シートの原材料であるシートの一例を示す図である。FIG. 10A is a diagram showing an example of a sheet which is a raw material of an insulating sheet. 図１０Ｂは、絶縁シートの原材料であるシートの別の一例を示す図である。FIG. 10B is a diagram showing another example of a sheet which is a raw material of an insulating sheet. 図１１は、第１実施形態に係る絶縁部材の拡大平面図である。FIG. 11 is an enlarged plan view of the insulating member according to the first embodiment. 図１２は、第１実施形態に係る連結部材の一部拡大平面図である。FIG. 12 is a partially enlarged plan view of the connecting member according to the first embodiment. 図１３は、第１実施形態において絶縁部材に連結部材を接近させた状態を示す要部拡大平面図である。FIG. 13 is an enlarged plan view of a main part showing a state in which the connecting member is brought close to the insulating member in the first embodiment. 図１４は、第１実施形態における絶縁部材と連結部材との連結箇所の表側を示す要部拡大平面図である。FIG. 14 is an enlarged plan view of a main part showing the front side of the connecting portion between the insulating member and the connecting member in the first embodiment. 図１５は、第１実施形態における絶縁部材と連結部材との連結箇所の裏側を示す要部拡大平面図である。FIG. 15 is an enlarged plan view of a main part showing the back side of the connecting portion between the insulating member and the connecting member in the first embodiment. 図１６は、第１実施形態に係る絶縁部材の爪部を示す要部拡大平面図である。FIG. 16 is an enlarged plan view of a main part showing a claw portion of the insulating member according to the first embodiment. 図１７は、第１実施形態に係る絶縁部材に対するコイル部の位置関係を示す図である。FIG. 17 is a diagram showing the positional relationship of the coil portion with respect to the insulating member according to the first embodiment. 図１８は、第２実施形態に係る絶縁シートを分解した状態の一部平面図である。FIG. 18 is a partial plan view of the insulating sheet according to the second embodiment in a disassembled state. 図１９は、第３実施形態に係る絶縁シートを分解した状態の一部平面図である。FIG. 19 is a partial plan view of the insulating sheet according to the third embodiment in a disassembled state. 図２０は、第４実施形態に係る絶縁シートを分解した状態の一部平面図である。FIG. 20 is a partial plan view of the insulating sheet according to the fourth embodiment in a disassembled state. 図２１は、第５実施形態に係る絶縁シートを分解した状態の一部平面図である。FIG. 21 is a partial plan view of the insulating sheet according to the fifth embodiment in a disassembled state.

以下に図面を参照して例示的な実施形態を説明する。 An exemplary embodiment will be described below with reference to the drawings.

なお、本明細書では、電動駆動装置７００において、モータ１００の中心軸ＣＡと平行な方向を「軸方向」と呼ぶ。軸方向のうち、後述する第２シャフト１１０ｂから第１シャフト１１０ａへの向きを「軸方向一方」と呼び、第１シャフト１１０ａから第２シャフト１１０ｂへの向きを「軸方向他方」と呼ぶ。各々の構成要素において、軸方向一方側における端部を「軸方向一方側端部」と呼ぶ。さらに、軸方向他方側における端部を「軸方向他方側端部」と呼ぶ。 In the present specification, in the electric drive device 700, the direction parallel to the central axis CA of the motor 100 is referred to as "axial direction". Of the axial directions, the direction from the second shaft 110b to the first shaft 110a, which will be described later, is referred to as "one in the axial direction", and the direction from the first shaft 110a to the second shaft 110b is referred to as "the other in the axial direction". In each component, the end on one side in the axial direction is referred to as the "one side end in the axial direction". Further, the end portion on the other side in the axial direction is referred to as the "end portion on the other side in the axial direction".

また、中心軸ＣＡに直交する方向を「径方向」と呼び、中心軸ＣＡを中心とする回転方向を「周方向」と呼ぶ。径方向のうち、中心軸ＣＡへと近づく向きを「径方向内方」と呼び、中心軸ＣＡから離れる向きを「径方向外方」と呼ぶ。各々の構成要素において、径方向内方側における端部を「径方向内端部」と呼ぶ。さらに、径方向外方側における端部を「径方向外端部」と呼ぶ。また、各々の構成要素の側面において、径方向内方を向く側面を「径方向内側面」と呼び、径方向外方を向く側面を「径方向外側面」と呼ぶ。 Further, the direction orthogonal to the central axis CA is referred to as "diameter direction", and the direction of rotation about the central axis CA is referred to as "circumferential direction". Of the radial directions, the direction approaching the central axis CA is referred to as "diameter inward", and the direction away from the central axis CA is referred to as "diametrically outward". In each component, the end portion on the inner side in the radial direction is referred to as the "inner end portion in the radial direction". Further, the end portion on the outer side in the radial direction is referred to as the "outer end portion in the radial direction". Further, on the side surface of each component, the side surface facing inward in the radial direction is referred to as "diameter inner surface", and the side surface facing outward in the radial direction is referred to as "diameter outer surface".

また、本明細書において、「環状」は、中心軸ＣＡを中心とする周方向の全周に渡って切れ目の無く連続的に一繋がりとなる形状のほか、中心軸ＣＡを中心とする全周の一部に切れ目を有する円弧状を含む。 Further, in the present specification, the "annular" has a shape of being continuously connected without a break over the entire circumference in the circumferential direction centered on the central axis CA, and the entire circumference centered on the central axis CA. Includes an arc shape with a cut in a part of.

なお、以上に説明した事項は、実際の機器に組み込まれた場合において厳密に適用されるものではない。 It should be noted that the matters described above are not strictly applied when incorporated into an actual device.

＜１．電動駆動装置の構成＞
実施形態に係る電動駆動装置７００は、ハイブリッド自動車（ＨＥＶ）、プラグインハイブリッド自動車（ＰＨＶ）、電気自動車（ＥＶ）などのモータ１００を駆動源とする車両に搭載され、該車両の車輪を回転駆動する駆動源として使用される。図１は、実施形態に係る電動駆動装置７００の断面図である。なお、図１は、モータ１００の中心軸ＣＡを含む仮想の平面で電動駆動装置７００を切断した場合の断面構造を示している。 <1. Configuration of electric drive device>
The electric drive device 700 according to the embodiment is mounted on a vehicle having a motor 100 as a drive source, such as a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHV), and an electric vehicle (EV), and rotationally drives the wheels of the vehicle. Used as a drive source. FIG. 1 is a cross-sectional view of the electric drive device 700 according to the embodiment. Note that FIG. 1 shows a cross-sectional structure when the electric drive device 700 is cut on a virtual plane including the central axis CA of the motor 100.

図１に示すように、電動駆動装置７００は、モータ１００と、減速装置２００と、差動装置（図示省略）と、ハウジング４００と、を備える。ハウジング４００は、モータ１００を収容するモータハウジング４０１と、減速装置２００を収容する減速ハウジング４０２と、差動装置を収容する差動ハウジング（図示省略）と、を有する。モータ１００は、三相交流で駆動する。減速装置２００は、モータ１００に接続され、モータ１００から伝達されるトルクを所定の減速比で増大させて差動装置に伝達する。差動装置は、減速装置２００を介してモータ１００に接続され、減速装置２００から伝達されたトルクを車輪に伝達する。 As shown in FIG. 1, the electric drive device 700 includes a motor 100, a speed reducer 200, a differential device (not shown), and a housing 400. The housing 400 includes a motor housing 401 that houses the motor 100, a speed reduction housing 402 that houses the speed reducer 200, and a differential housing (not shown) that houses the differential device. The motor 100 is driven by three-phase alternating current. The speed reduction device 200 is connected to the motor 100, increases the torque transmitted from the motor 100 by a predetermined reduction ratio, and transmits the torque to the differential device. The differential device is connected to the motor 100 via the speed reducer 200, and transmits the torque transmitted from the speed reducer 200 to the wheels.

＜２．モータの構成＞
モータ１００は、図１に示すように、ロータ１１と、ステータ１２と、を備える。 <2. Motor configuration>
As shown in FIG. 1, the motor 100 includes a rotor 11 and a stator 12.

ロータ１１は、ステータ１２よりも径方向内方に設けられ、中心軸ＣＡを中心として周方向に回転可能である。ロータ１１は、シャフト１１０と、ロータコア１１１と、マグネット１１２と、を有する。 The rotor 11 is provided inward in the radial direction with respect to the stator 12, and can rotate in the circumferential direction about the central axis CA. The rotor 11 has a shaft 110, a rotor core 111, and a magnet 112.

シャフト１１０は、ロータ１１の回転軸である。シャフト１１０は、ベアリング（符号省略）を介してモータハウジング４０１により回転可能に支持される。シャフト１１０は、第１シャフト１１０ａと、第２シャフト１１０ｂと、第１ギア部１１０ｃと、を有する。第１シャフト１１０ａおよび第２シャフト１１０ｂは、軸方向に延びる中空の筒状である。第１シャフト１１０ａの軸方向他方側端部には、第２シャフト１１０ｂの軸方向一方側端部が接続される。第１ギア部１１０ｃは、減速装置２００の第２ギア部２１０と噛み合う歯車であり、モータ１００の駆動力を減速装置２００に伝達する。第１ギア部１１０ｃは、第２シャフト１１０ｂ径方向外側面に設けられる。第２シャフト１１０ｂは、モータハウジング４０１から軸方向他方に突出する。そのため、第２シャフト１１０ｂの軸方向他方側の部分と第１ギア部１１０ｃとは、減速ハウジング４０２内に収容される。 The shaft 110 is a rotation shaft of the rotor 11. The shaft 110 is rotatably supported by the motor housing 401 via bearings (reference numerals omitted). The shaft 110 includes a first shaft 110a, a second shaft 110b, and a first gear portion 110c. The first shaft 110a and the second shaft 110b have a hollow tubular shape extending in the axial direction. An axial one-sided end of the second shaft 110b is connected to the axially opposite end of the first shaft 110a. The first gear portion 110c is a gear that meshes with the second gear portion 210 of the speed reducer 200, and transmits the driving force of the motor 100 to the speed reducer 200. The first gear portion 110c is provided on the outer surface of the second shaft 110b in the radial direction. The second shaft 110b projects axially from the motor housing 401 to the other side. Therefore, the portion of the second shaft 110b on the other side in the axial direction and the first gear portion 110c are housed in the reduction housing 402.

ロータコア１１１は、中心軸ＣＡを中心とする環状の磁性体であり、本実施形態では板状の電磁鋼板が複数積層された積層体である。ロータコア１１１は、第１シャフト１１０ａの径方向外側面に固定される。ロータコア１１１は、該ロータコア１１１を軸方向に貫通する複数の貫通孔１１１１を有する。各々の貫通孔１１１１は、周方向に間隔を有して配列される。 The rotor core 111 is an annular magnetic material centered on the central axis CA, and in the present embodiment, it is a laminated body in which a plurality of plate-shaped electromagnetic steel sheets are laminated. The rotor core 111 is fixed to the radial outer surface of the first shaft 110a. The rotor core 111 has a plurality of through holes 1111 that penetrate the rotor core 111 in the axial direction. The through holes 1111 are arranged at intervals in the circumferential direction.

マグネット１１２は、複数のマグネット片（図示省略）を有する。各々のマグネット片は、径方向と直交する方向に広がる平板状であり、ロータコア１１１の各々の貫通孔１１１１内に保持される。言い換えると、各々のマグネット片は、周方向に間隔を有して配列される。 The magnet 112 has a plurality of magnet pieces (not shown). Each magnet piece has a flat plate shape extending in a direction orthogonal to the radial direction, and is held in each through hole 1111 of the rotor core 111. In other words, each magnet piece is arranged at intervals in the circumferential direction.

ステータ１２は、ロータ１１を駆動して回転させる。ステータ１２は、中心軸ＣＡを中心とする環状である。図２は、ステータ１２の軸方向一方側端部の斜視図である。 The stator 12 drives and rotates the rotor 11. The stator 12 is an annular shape centered on the central axis CA. FIG. 2 is a perspective view of one end of the stator 12 in the axial direction.

ステータ１２は、ステータコア１２１と、コイル部１２２と、絶縁シート１２３と、結束部材１２４と、スロット紙１２５（後述の図６で図示）と、押さえ部材（図示省略）と、を有する。 The stator 12 includes a stator core 121, a coil portion 122, an insulating sheet 123, a binding member 124, a slot paper 125 (shown in FIG. 6 to be described later), and a holding member (not shown).

図３は、ステータコア１２１の斜視図である。なお、図３では、ステータコア１２１のスロットＳへのコイル部１２２の配置態様を説明するため、Ｕ相コイル部１２２ｕ、Ｖ相コイル部１２２ｖ、およびＷ相コイル部１２２ｗを模式的に示している。ただし、図３に示すコイル部１２２は、実際に設けるコイル部１２２の一部である。 FIG. 3 is a perspective view of the stator core 121. Note that FIG. 3 schematically shows the U-phase coil portion 122u, the V-phase coil portion 122v, and the W-phase coil portion 122w in order to explain how the coil portion 122 is arranged in the slot S of the stator core 121. However, the coil portion 122 shown in FIG. 3 is a part of the coil portion 122 actually provided.

ステータコア１２１は、中心軸ＣＡを中心とする環状の磁性体であり、本実施形態では板状の電磁鋼板が複数積層された積層体である。ステータコア１２１は、図３に示すように、環状のコアバック１２１１と、複数のティース１２１２と、複数のスロットＳと、を有する。 The stator core 121 is an annular magnetic material centered on the central axis CA, and in the present embodiment, it is a laminated body in which a plurality of plate-shaped electromagnetic steel sheets are laminated. As shown in FIG. 3, the stator core 121 has an annular core back 1211, a plurality of teeth 1212, and a plurality of slots S.

複数のティース１２１２は、コアバック１２１１の径方向内端部から径方向内方に延び、周方向に並ぶ。周方向に隣り合うティース間には、複数のスロットＳが設けられる。複数のスロットＳは、環状のステータコア１２１の径方向内端部に設けられ、周方向に並ぶ。 The plurality of teeth 1212 extend radially inward from the radial inner end portion of the core back 1211 and are arranged in the circumferential direction. A plurality of slots S are provided between the teeth adjacent to each other in the circumferential direction. The plurality of slots S are provided at the radial inner ends of the annular stator core 121 and are arranged in the circumferential direction.

各々のスロットＳには、絶縁材により形成されるスロット紙１２５と、コイル部１２２の直線部１２２２（後述する図５参照）が収容される。直線部１２２２は、スロット紙１２５内に収容される。各々のスロットＳの径方向内端部には、コイル部１２２の導線をスロットＳからはみ出させないようにするため、軸方向に伸びる帯状の押さえ部材が、スロットＳ内において、コイル部１２２の直線部１２２２よりも径方向内方に配置される。 Each slot S accommodates a slot paper 125 formed of an insulating material and a straight portion 1222 of the coil portion 122 (see FIG. 5 to be described later). The straight portion 1222 is housed in the slot paper 125. At the radial inner end of each slot S, in order to prevent the lead wire of the coil portion 122 from protruding from the slot S, a strip-shaped pressing member extending in the axial direction is provided in the slot S as a straight portion of the coil portion 122. It is arranged radially inward from 1222.

各々のコイル部１２２は、異なるスロットＳ間を跨いで設けられる。本実施形態では、複数のコイル部１２２は、分布巻き方式で単層重ね巻きされる。より具体的には、コイル部１２２は、Ｕ相コイル部１２２ｕと、Ｖ相コイル部１２２ｖと、Ｗ相コイル部１２２ｗと、を有する。各相のコイル部１２２ｕ、１２２ｖ、１２２ｗは、本実施形態ではＹ結線される。同相のコイル部１２２は、図示しない渡り線またはブスバーを介して電気的に接続される。同相のコイル部１２２は、分布巻き方式により、他の２相のコイル部１２２が収容される複数のスロットＳを跨いで離間したスロットＳに収容される。また、単層重ね巻きにより、各スロットＳには、同相のコイル部１２２が収容される。言い換えると、同じスロットＳに異相のコイル部１２２は収容されない。 Each coil portion 122 is provided so as to straddle between different slots S. In the present embodiment, the plurality of coil portions 122 are wound in a single layer by a distributed winding method. More specifically, the coil portion 122 has a U-phase coil portion 122u, a V-phase coil portion 122v, and a W-phase coil portion 122w. The coil portions 122u, 122v, 122w of each phase are Y-connected in this embodiment. The in-phase coil portion 122 is electrically connected via a crossover wire or a bus bar (not shown). The in-phase coil portion 122 is housed in a slot S separated across a plurality of slots S in which the other two-phase coil portions 122 are housed by a distributed winding method. Further, the coil portions 122 having the same phase are accommodated in each slot S by the single-layer lap winding. In other words, the coil portion 122 having a different phase is not accommodated in the same slot S.

例えば、本実施形態では、周方向に並ぶ２つのスロットＳに、同相のコイル部１２２の一方の直線部１２２２が１つずつ収容される。例えば図３の周方向一方に向かって並ぶスロットＳ１からＳ１６において、２つのうちの一方のＵ相コイル部１２２ｕの直線部１２２２が、スロットＳ１５からＳ１０を跨いで、スロットＳ１６およびＳ９に収容される。また、２つのうちの他方のＵ相コイル部１２２ｕの直線部１２２２が、スロットＳ１４からＳ１１を跨いで、スロットＳ１５およびＳ１０に収容される。また、２つのうちの一方のＶ相コイル部１２２ｖの直線部１２２２が、スロットＳ１１からＳ６を跨いで、スロットＳ１２およびＳ５に収容される。また、２つのうちの他方のＶ相コイル部１２２ｖの直線部１２２２が、スロットＳ１０からＳ７を跨いで、スロットＳ１１およびＳ６に収容される。また、２つのうちの一方のＷ相コイル部１２２ｗの直線部１２２２が、スロットＳ７からＳ２を跨いで、スロットＳ８およびＳ１に収容される。また、２つのうちの他方のＷ相コイル部１２２ｗの直線部１２２２が、スロットＳ６からＳ３を跨いで、スロットＳ７およびＳ２に収容される。他の複数のスロットＳでも同様に、各相のコイル部１２２の直線部１２２２が収容される。 For example, in the present embodiment, one straight portion 1222 of one of the coil portions 122 having the same phase is accommodated in each of the two slots S arranged in the circumferential direction. For example, in slots S1 to S16 arranged in one direction in the circumferential direction of FIG. 3, a straight portion 1222 of one of the two U-phase coil portions 122u straddles slots S15 to S10 and is accommodated in slots S16 and S9. .. Further, the straight portion 1222 of the other U-phase coil portion 122u of the two is accommodated in slots S15 and S10 across slots S14 to S11. Further, a linear portion 1222 of one of the two V-phase coil portions 122v is accommodated in slots S12 and S5 across slots S11 to S6. Further, the linear portion 1222 of the other V-phase coil portion 122v of the two is accommodated in the slots S11 and S6 across the slots S10 to S7. Further, the straight portion 1222 of one of the two W-phase coil portions 122w straddles slots S7 to S2 and is accommodated in slots S8 and S1. Further, the straight portion 1222 of the other W-phase coil portion 122w of the two is accommodated in slots S7 and S2 across slots S6 to S3. Similarly, in the other plurality of slots S, the linear portion 1222 of the coil portion 122 of each phase is accommodated.

また、コイル部１２２の導線には、本実施形態では断面形状が円形の丸線を用いている。但し、この例示に限定されず、断面形状が円形以外の形状を有する導線が使用されてもよい。例えば、導線の断面形状は、矩形、六角形などの多角形状であってもよい。 Further, as the conducting wire of the coil portion 122, a round wire having a circular cross-sectional shape is used in this embodiment. However, the present invention is not limited to this example, and a conducting wire having a cross-sectional shape other than a circular shape may be used. For example, the cross-sectional shape of the conducting wire may be a polygonal shape such as a rectangle or a hexagon.

各々のコイル部１２２は、コイルエンド１２２１を有する。コイルエンド１２２１は、コイル部１２２のスロットＳから外部に突出する部分であり、ステータコア１２１の軸方向一方側端部よりも軸方向一方側とステータコア１２１の軸方向他方側端部よりも軸方向他方側とに設けられる。 Each coil portion 122 has a coil end 1221. The coil end 1221 is a portion that protrudes outward from the slot S of the coil portion 122, and is one side in the axial direction of the stator core 121 and the other in the axial direction of the other end of the stator core 121. It is provided on the side.

絶縁シート１２３は、異なるコイル部１２２間を電気的に絶縁するために設けられる。絶縁シート１２３は、いわゆる相間絶縁紙であり、例えば板状の薄い樹脂製の板の両面に不織紙が貼り付けられた構造である。絶縁シート１２３の構成については、後に詳述する。 The insulating sheet 123 is provided to electrically insulate between the different coil portions 122. The insulating sheet 123 is a so-called interphase insulating paper, and has a structure in which non-woven paper is attached to both sides of, for example, a plate-shaped thin resin plate. The configuration of the insulating sheet 123 will be described in detail later.

結束部材１２４は、絶縁性を有する紐状であり、コイルエンド１２２１の導線を結束する。 The binding member 124 has an insulating string shape and binds the conductor of the coil end 1221.

＜３．ステータの製造方法＞
次に、ステータ１２の製造方法を説明する。図４は、ステータ１２の製造方法の一例を説明するためのフローチャートである。 <3. Manufacture method of stator>
Next, a method of manufacturing the stator 12 will be described. FIG. 4 is a flowchart for explaining an example of a method for manufacturing the stator 12.

まず、長手方向を有する治具に導線を巻きつけることによりコイル形状にして、コイル部１２２を成型する（Ｓ１０１）。本実施形態では、スロットＳの総数の半数のコイル部１２２が成型される。コイル部１２２は、例えば図５に示すように、長手方向の両端部分のコイルエンド１２２１と、長手方向に延びる一対の直線部１２２２と、を有する形状に成型される。なお、一対の直線部１２２２は、第１直線部１２２２ａと、第２直線部１２２２ｂと、を有する。この際、図５に示すように、各々のコイル部１２２の延伸方向ｄＬと垂直なコイル形状は、本実施形態では長手方向を有する六角形状に成型される。但し、コイル形状は、この例示に限定されず、例えば長手方向を有する楕円形状であってもよい。 First, the coil portion 122 is molded into a coil shape by winding a conducting wire around a jig having a longitudinal direction (S101). In the present embodiment, the coil portion 122, which is half of the total number of slots S, is molded. As shown in FIG. 5, for example, the coil portion 122 is molded into a shape having coil ends 1221 at both ends in the longitudinal direction and a pair of straight portions 1222 extending in the longitudinal direction. The pair of straight line portions 1222 has a first straight line portion 1222a and a second straight line portion 1222b. At this time, as shown in FIG. 5, the coil shape perpendicular to the stretching direction dL of each coil portion 122 is molded into a hexagonal shape having a longitudinal direction in the present embodiment. However, the coil shape is not limited to this example, and may be, for example, an elliptical shape having a longitudinal direction.

次に、ステータコア１２１にスロット紙１２５を取り付ける（Ｓ１０２）。この際、スロットＳにスロット紙１２５が挿入される。ここで、図６に、スロット紙１２５をスロットＳに挿入した状態を示す。図６に示すように、スロット紙１２５は、軸方向に延び、スロットＳの内壁に沿って折り曲がって径方向内方に向かって開口した形状を有する。また、スロット紙１２５は、スロットＳより軸方向一方側および軸方向他方側に突出する。 Next, the slot paper 125 is attached to the stator core 121 (S102). At this time, the slot paper 125 is inserted into the slot S. Here, FIG. 6 shows a state in which the slot paper 125 is inserted into the slot S. As shown in FIG. 6, the slot paper 125 has a shape that extends in the axial direction, bends along the inner wall of the slot S, and opens inward in the radial direction. Further, the slot paper 125 projects from the slot S to one side in the axial direction and the other side in the axial direction.

次に、ステータコア１２１に絶縁シート１２３を取り付ける（Ｓ１０３）。ここで、後述する図９に示すように、絶縁シート１２３は、一対の絶縁部材２（２Ａ，２Ｂ）と、一対の絶縁部材２同士を連結する連結部材１と、を有する。連結部材１は、一対の脚部１１（１１Ａ，１１Ｂ）を有する。ステータコア１２１に絶縁シート１２３を取り付ける際、図６に示すように、スロット紙１２５に絶縁シート１２３の脚部１１が挿入される。すなわち、連結部材１は、スロットＳ内に設けられる。 Next, the insulating sheet 123 is attached to the stator core 121 (S103). Here, as shown in FIG. 9, which will be described later, the insulating sheet 123 has a pair of insulating members 2 (2A, 2B) and a connecting member 1 that connects the pair of insulating members 2 to each other. The connecting member 1 has a pair of legs 11 (11A, 11B). When the insulating sheet 123 is attached to the stator core 121, the legs 11 of the insulating sheet 123 are inserted into the slot paper 125 as shown in FIG. That is, the connecting member 1 is provided in the slot S.

また、本実施形態では図７に示すように、各々の絶縁シート１２３の脚部１１は、周方向において２個のスロットＳを空けて順に挿入される。２つの脚部１１の一方と他方は、それぞれ、周方向に連続して並び且つそれぞれに同相のコイル部１２２の直線部１２２２を収容するためのスロットＳに挿入される。例えば、周方向に連続して並ぶスロットＳ１からＳ１６において、スロットＳ３およびＳ４には、同じ絶縁シート１２３の各々の脚部１１が挿入される。スロットＳ７およびＳ８、Ｓ１１およびＳ１２、Ｓ１５およびＳ１６でも同じ絶縁シート１２３の各々の脚部１１が挿入される。 Further, in the present embodiment, as shown in FIG. 7, the legs 11 of each insulating sheet 123 are inserted in order with two slots S open in the circumferential direction. One and the other of the two legs 11 are inserted into slots S for accommodating the linear portions 1222 of the coil portions 122 which are continuously arranged in the circumferential direction and are in phase with each other. For example, in slots S1 to S16 that are continuously arranged in the circumferential direction, the legs 11 of the same insulating sheet 123 are inserted into the slots S3 and S4. The legs 11 of the same insulating sheet 123 are also inserted in slots S7 and S8, S11 and S12, S15 and S16.

次に、同相のコイル部１２２を２つずつステータコア１２１に順番に取り付ける。まず、２つの同相のコイル部１２２の各々の直線部１２２２が、該直線部１２２２を収容するスロットＳよりも径方向内方側において、該スロットＳと同じ周方向位置にそれぞれ配置される（Ｓ１０４）。この際、各々の直線部１２２２は、図３のように対応するスロットＳに収容されるように並べられる。例えば、図３のスロットＳ１からＳ１６に注目して説明すると、２つのＵ相コイル部１２２ｕの場合、２つのうちの一方のＵ相コイル部１２２ｕの各々の直線部１２２２は、スロットＳ１６、Ｓ９よりも径方向内方側において、該スロットＳ１６、Ｓ９と同じ周方向位置にそれぞれ配置される。２つのうちの他方のＵ相コイル部１２２ｕの各々の直線部１２２２は、スロットＳ１５、Ｓ１０よりも径方向内方側において、該スロットＳ１５、Ｓ１０と同じ周方向位置にそれぞれ配置される。 Next, two in-phase coil portions 122 are attached to the stator core 121 in order. First, each straight line portion 1222 of the two in-phase coil portions 122 is arranged in the same circumferential direction as the slot S on the radial inward side of the slot S accommodating the straight line portion 1222 (S104). ). At this time, the straight portions 1222 are arranged so as to be accommodated in the corresponding slots S as shown in FIG. For example, paying attention to slots S1 to S16 in FIG. 3, in the case of two U-phase coil portions 122u, each straight portion 1222 of one of the two U-phase coil portions 122u is from slots S16 and S9. Is arranged in the same circumferential position as the slots S16 and S9 on the inner side in the radial direction. Each straight line portion 1222 of the other U-phase coil portion 122u of the two is arranged on the radial inward side of the slots S15 and S10 at the same circumferential position as the slots S15 and S10, respectively.

そして、各々の直線部１２２２を径方向外方に押して対応するスロットＳに挿入する（Ｓ１０５）。これにより、コイル部１２２は、異なるスロットＳ間を跨いで設けられる（図３参照）。例えば、図３のスロットＳ１からＳ１６に注目して説明すると、２つのＵ相コイル部１２２ｕの場合、２つのうちの一方のＵ相コイル部１２２ｕの各々の直線部１２２２がスロットＳ１６およびＳ９に挿入され、他方のＵ相コイル部１２２ｕの各々の直線部１２２２がスロットＳ１５およびＳ１０に挿入される。 Then, each straight portion 1222 is pushed outward in the radial direction and inserted into the corresponding slot S (S105). As a result, the coil portion 122 is provided so as to straddle the different slots S (see FIG. 3). For example, paying attention to slots S1 to S16 in FIG. 3, in the case of two U-phase coil portions 122u, each straight portion 1222 of one of the two U-phase coil portions 122u is inserted into slots S16 and S9. Then, each straight portion 1222 of the other U-phase coil portion 122u is inserted into slots S15 and S10.

次に、全てのコイル部１２２をステータコア１２１に取り付けられていない場合（Ｓ１０６でＮＯ）、周方向他方において隣り合う別の相の２つコイル部１２２の各々の直線部１２２２が、該直線部１２２２を収容するスロットＳよりも径方向内方側において、該スロットＳと同じ周方向位置にそれぞれ配置される（Ｓ１０７）。この際も、各々の直線部１２２２は、図３のように対応するスロットＳに収容されるように並べられる。例えば、図３のスロットＳ１からＳ１６に注目して説明すると、ステップＳ１０５にて２つのＵ相コイル部１２２ｕの直線部１２２２を挿入した後の場合、２つのうちの一方のＶ相コイル部１２２ｖの各々の直線部１２２２は、スロットＳ１２、Ｓ５よりも径方向内方側において、該スロットＳ１２、Ｓ５と同じ周方向位置にそれぞれ配置される。２つのうちの他方のＶ相コイル部１２２ｖの各々の直線部１２２２は、スロットＳ１１、Ｓ６よりも径方向内方側において、該スロットＳ１１、Ｓ６と同じ周方向位置にそれぞれ配置される。または、ステップＳ１０５にて２つのＶ相コイル部１２２ｖの直線部１２２２を挿入した後の場合、２つのうちの一方のＷ相コイル部１２２ｗの各々の直線部１２２２は、スロットＳ８、Ｓ１よりも径方向内方側において、該スロットＳ８、Ｓ１と同じ周方向位置にそれぞれ配置される。２つのうちの他方のＷ相コイル部１２２ｗの各々の直線部１２２２は、スロットＳ７、Ｓ２よりも径方向内方側において、該スロットＳ７、Ｓ２と同じ周方向位置にそれぞれ配置される。 Next, when all the coil portions 122 are not attached to the stator core 121 (NO in S106), each straight portion 1222 of the two coil portions 122 of different phases adjacent to each other in the circumferential direction is the straight portion 1222. Are arranged in the same circumferential position as the slot S on the inner side in the radial direction with respect to the slot S (S107). Also in this case, the straight portions 1222 are arranged so as to be accommodated in the corresponding slots S as shown in FIG. For example, paying attention to slots S1 to S16 in FIG. 3, after inserting the straight portion 1222 of the two U-phase coil portions 122u in step S105, one of the two V-phase coil portions 122v Each straight line portion 1222 is arranged on the inner side in the radial direction from the slots S12 and S5 at the same circumferential position as the slots S12 and S5, respectively. Each straight line portion 1222 of the other V-phase coil portion 122v of the two is arranged on the radial inward side of the slots S11 and S6 at the same circumferential position as the slots S11 and S6, respectively. Alternatively, after inserting the straight portion 1222 of the two V-phase coil portions 122v in step S105, each straight portion 1222 of the W-phase coil portion 122w of one of the two has a diameter larger than that of the slots S8 and S1. On the inner side in the direction, they are arranged at the same circumferential positions as the slots S8 and S1, respectively. Each straight line portion 1222 of the other W-phase coil portion 122w of the two is arranged on the radial inward side of the slots S7 and S2 at the same circumferential position as the slots S7 and S2, respectively.

そして、各々の直線部１２２２を径方向外方に押して対応するスロットＳに挿入する（Ｓ１０８）。これにより、コイル部１２２は、異なるスロットＳ間を跨いで設けられる（図３参照）。例えば、図３のスロットＳ１からＳ１６に注目して説明すると、２つのＶ相コイル部１２２ｖの場合、２つのうちの一方のＶ相コイル部１２２ｖの直線部１２２２がスロットＳ１２およびＳ５に挿入され、他方のＶ相コイル部１２２ｖの直線部１２２２がスロットＳ１１およびＳ６に挿入される。または、２つのＷ相コイル部１２２ｗの場合、２つのうちの一方のＷ相コイル部１２２ｗの直線部１２２２がスロットＳ８およびＳ１に挿入され、他方のＷ相コイル部１２２ｗの直線部１２２２がスロットＳ７およびＳ２に挿入される。 Then, each straight portion 1222 is pushed outward in the radial direction and inserted into the corresponding slot S (S108). As a result, the coil portion 122 is provided so as to straddle the different slots S (see FIG. 3). For example, paying attention to slots S1 to S16 in FIG. 3, in the case of two V-phase coil portions 122v, the straight portion 1222 of one of the two V-phase coil portions 122v is inserted into slots S12 and S5. The straight portion 1222 of the other V-phase coil portion 122v is inserted into slots S11 and S6. Alternatively, in the case of two W-phase coil portions 122w, the straight portion 1222 of one of the two W-phase coil portions 122w is inserted into slots S8 and S1, and the straight portion 1222 of the other W-phase coil portion 122w is inserted into slot S7. And inserted in S2.

次に、全てのコイル部１２２をステータコア１２１に取り付けた場合（Ｓ１０６でＹＥＳ）、各々のスロットＳに帯状の押さえ部材を軸方向に挿入する（Ｓ１０９）。なお、スロットＳ内において、押さえ部材１０９は、直線部１２２２および脚部１１よりも径方向内方に設けられる。押さえ部材は、直線部１２２２（つまり導線）および脚部１１がスロットＳからはみ出ることを防止する。 Next, when all the coil portions 122 are attached to the stator core 121 (YES in S106), a band-shaped pressing member is inserted into each slot S in the axial direction (S109). In the slot S, the pressing member 109 is provided inward in the radial direction with respect to the straight portion 1222 and the leg portion 11. The pressing member prevents the straight portion 1222 (that is, the conducting wire) and the leg portion 11 from protruding from the slot S.

次に、周方向に隣り合う異相のコイル部１２２のコイルエンド１２２１間に絶縁シート１２３の絶縁部材２を挟む（Ｓ１１０）。すなわち、絶縁部材２は、ステータ１２の軸方向の両端部において異なるコイル部１２２のスロットＳから外部に突出するコイルエンド１２２１間を絶縁する。 Next, the insulating member 2 of the insulating sheet 123 is sandwiched between the coil ends 1221 of the coil portions 122 having different phases adjacent to each other in the circumferential direction (S110). That is, the insulating member 2 insulates between the coil ends 1221 protruding outward from the slots S of the different coil portions 122 at both ends in the axial direction of the stator 12.

例えば、図７のように、脚部１１がスロットＳ７およびＳ８に挿入された絶縁シート１２３の絶縁部材２は、Ｗ相コイル部１２２ｗのコイルエンド１２２１と、Ｖ相コイル部１２２ｖのコイルエンド１２２１との間に挟まれる。また、脚部１１がスロットＳ１０およびＳ１１に挿入された絶縁シート１２３の絶縁部材２は、Ｖ相コイル部１２２ｖのコイルエンド１２２１と、Ｕ相コイル部１２２ｕのコイルエンド１２２１との間に挟まれる。 For example, as shown in FIG. 7, the insulating member 2 of the insulating sheet 123 in which the leg portion 11 is inserted into the slots S7 and S8 includes the coil end 1221 of the W-phase coil portion 122w and the coil end 1221 of the V-phase coil portion 122v. It is sandwiched between. Further, the insulating member 2 of the insulating sheet 123 in which the leg portion 11 is inserted into the slots S10 and S11 is sandwiched between the coil end 1221 of the V-phase coil portion 122v and the coil end 1221 of the U-phase coil portion 122u.

次に、異なるコイルエンド１２２１間に絶縁部材２が設けられた該コイルエンド１２２１を軸方向に押圧する（Ｓ１１１）。つまり、ステータ１２の軸方向一方側のコイルエンド１２２１は、一方の絶縁部材２とともに軸方向他方に押圧されて、軸方向高さが低くなるように成型される。また、ステータ１２の軸方向他方側のコイルエンド１２２１は、他方の絶縁部材２とともに軸方向一方に押圧されて、軸方向高さが低くなるように成型される。 Next, the coil end 1221 provided with the insulating member 2 between the different coil ends 1221 is pressed in the axial direction (S111). That is, the coil end 1221 on one side in the axial direction of the stator 12 is pressed together with the insulating member 2 in the axial direction to the other, and is molded so that the height in the axial direction is lowered. Further, the coil end 1221 on the other side in the axial direction of the stator 12 is pressed in one direction in the axial direction together with the other insulating member 2, and is molded so that the height in the axial direction is lowered.

次に、コイルエンド１２２１の導線がばらけないようにするため、押圧されたコイルエンド１２２１を絶縁部材２とともに結束部材１２４で結束し（Ｓ１１２：図２参照）、コイルエンドにワニスを含浸させる（Ｓ１１３）。 Next, in order to prevent the conductor wire of the coil end 1221 from coming apart, the pressed coil end 1221 is bound together with the insulating member 2 by the binding member 124 (S112: see FIG. 2), and the coil end is impregnated with varnish (see FIG. 2). S113).

＜４．絶縁シートの第１実施形態＞
次に、絶縁シート１２３の構成について詳述する。なお、以下、絶縁シート１２３の各実施形態について、便宜上、符合１２３に実施形態の番号を付すこととする。また、以下では、絶縁シート１２３を平面状に展開した状態での構成について説明し、絶縁シート１２３を平面状に展開した状態において、連結部材１が延びる方向を「第１方向ｄｘ」と呼び、板状の絶縁部材２と平行であり且つ第１方向ｄｘと垂直な方向を「第２方向ｄｙ」と呼ぶ。また、第１方向ｄｘにおいて、一方側をｄｘ１、他方側をｄｘ２として図示し、第２方向ｄｙにおいて、一方側をｄｙ１、他方側をｄｙ２として図示する。 <4. First Embodiment of Insulation Sheet>
Next, the configuration of the insulating sheet 123 will be described in detail. Hereinafter, for each embodiment of the insulating sheet 123, the code 123 will be numbered according to the embodiment for convenience. Further, in the following, the configuration in which the insulating sheet 123 is unfolded in a plane will be described, and the direction in which the connecting member 1 extends in the state where the insulating sheet 123 is unfolded in a plane is referred to as "first direction dx". The direction parallel to the plate-shaped insulating member 2 and perpendicular to the first direction dx is called "second direction dy". Further, in the first direction dx, one side is shown as dx1 and the other side is shown as dx2, and in the second direction dy, one side is shown as dy1 and the other side is shown as dy2.

図８は、第１実施形態に係る絶縁シート１２３１の分解した状態を示す平面図である。図９は、第１実施形態に係る絶縁シート１２３１の組み立て後の状態を示す平面図である。 FIG. 8 is a plan view showing a disassembled state of the insulating sheet 1231 according to the first embodiment. FIG. 9 is a plan view showing the state of the insulating sheet 1231 according to the first embodiment after assembly.

図８および図９に示すように、絶縁シート１２３１は、一対の絶縁部材２と、連結部材１と、を有する。先述したように、一対の絶縁部材２は、異なるコイル部１２２のコイルエンド１２２１間を絶縁するために用いる。すなわち、絶縁シート１２３１は、コイル部１２２間を電気的に絶縁するための一対の絶縁部材２を有する。連結部材１は、一対の絶縁部材２とは異なる部材により形成され、一対の絶縁部材２同士を連結する。 As shown in FIGS. 8 and 9, the insulating sheet 1231 has a pair of insulating members 2 and a connecting member 1. As described above, the pair of insulating members 2 are used to insulate between the coil ends 1221 of the different coil portions 122. That is, the insulating sheet 1231 has a pair of insulating members 2 for electrically insulating the coil portions 122. The connecting member 1 is formed of a member different from the pair of insulating members 2, and connects the pair of insulating members 2 to each other.

一対の絶縁部材２は、第１方向一方側に配置される絶縁部材２Ａと、第１方向他方側に配置される絶縁部材２Ｂと、からなる。連結部材１は、一対の絶縁部材２とは異なる部材により形成されるので、例えば、図１０Ａに示すように、原材料である１枚のシートＳＨ１から、一対の絶縁部材２Ａ，２Ｂを３組と、連結部材１を３つ取得することが可能である。この場合、３つ分の絶縁シート１２３１を作成可能である。または、例えば、図１０Ｂに示すように、原材料であるシートＳＨ１１から一対の絶縁部材２Ａ，２Ｂを３組取得し、シートＳＨ１１とは別のシートＳＨ１２から連結部材１を３つ取得することも可能である。このように、本実施形態では、一対の絶縁部材と連結部材とが一つの部材により形成された構成に比べ、原材料である同じシートから作成可能な絶縁シート１２３１を増やすことができるので、歩留まりを向上させることが可能となる。 The pair of insulating members 2 includes an insulating member 2A arranged on one side in the first direction and an insulating member 2B arranged on the other side in the first direction. Since the connecting member 1 is formed of a member different from the pair of insulating members 2, for example, as shown in FIG. 10A, three pairs of insulating members 2A and 2B are formed from one sheet SH1 which is a raw material. , It is possible to acquire three connecting members 1. In this case, three insulating sheets 1231 can be produced. Alternatively, for example, as shown in FIG. 10B, it is also possible to acquire three pairs of insulating members 2A and 2B from the raw material sheet SH11 and acquire three connecting members 1 from a sheet SH12 different from the sheet SH11. Is. As described above, in the present embodiment, the yield can be increased because the insulating sheet 1231 that can be produced from the same raw material can be increased as compared with the configuration in which the pair of insulating members and the connecting member are formed by one member. It is possible to improve.

連結部材１は、一対の脚部１１として、第２方向一方側に配置されて第１方向に延びる脚部１１Ａと、第２方向他方側に配置されて第１方向に延びる脚部１１Ｂと、を有する。また、連結部材１は、一対の連結部１２として、第１方向一方側に配置される連結部１２Ａと、第１方向他方側に配置される連結部１２Ｂと、を有する。連結部１２Ａは、脚部１１Ａ，１１Ｂの第１方向一方側端部同士を連結し、連結部１２Ｂは、脚部１１Ａ，１１Ｂの第１方向他方側端部同士を連結する。すなわち、連結部材１は、第１方向に延びる２つの脚部１１と、脚部１１の第１方向端部同士を連結する連結部１２と、を有する。 As a pair of leg portions 11, the connecting member 1 includes a leg portion 11A arranged on one side in the second direction and extending in the first direction, and a leg portion 11B arranged on the other side in the second direction and extending in the first direction. Have. Further, the connecting member 1 has, as a pair of connecting portions 12, a connecting portion 12A arranged on one side in the first direction and a connecting portion 12B arranged on the other side in the first direction. The connecting portion 12A connects the one-side ends of the legs 11A and 11B in the first direction, and the connecting portion 12B connects the other ends of the legs 11A and 11B in the first direction. That is, the connecting member 1 has two leg portions 11 extending in the first direction and a connecting portion 12 for connecting the ends of the leg portions 11 in the first direction.

絶縁部材２Ａの第１方向他方側端部には、連結部材１の第１方向一方側端部が接続され、絶縁部材２Ｂの第１方向一方側端部には、連結部材１の第１方向他方側端部が接続される。すなわち、絶縁部材２の第１方向端部には、連結部材１の第１方向端部が接続される。 The one-sided end in the first direction of the connecting member 1 is connected to the other-side end in the first direction of the insulating member 2A, and the one-sided end in the first direction of the insulating member 2B is connected to the one-sided end in the first direction of the connecting member 1. The other end is connected. That is, the first-direction end of the connecting member 1 is connected to the first-direction end of the insulating member 2.

ここで、図９に示すように、第２方向に延び、絶縁シート１２３１の第１方向中心位置を通る中心線Ｃ１に対して、絶縁シート１２３１は第１方向に線対称な形状を有する。従って、説明の便宜上、以下では中心線Ｃ１より第１方向一方側（絶縁部材２Ａ側）の構成について代表的に説明する。 Here, as shown in FIG. 9, the insulating sheet 1231 has a shape that is line-symmetrical in the first direction with respect to the center line C1 that extends in the second direction and passes through the center position of the insulating sheet 1231 in the first direction. Therefore, for convenience of explanation, the configuration on one side (insulating member 2A side) in the first direction from the center line C1 will be typically described below.

図１１は、絶縁部材２Ａの拡大平面図である。絶縁部材２Ａは、第１方向および第２方向に平面状に拡がる。絶縁部材２Ａは、基部２０と、一対の第１爪部２１と、一対の第２爪部と、を有する。一対の第１爪部２１および一対の第２爪部２２は、基部２０の第１方向他方側端部から第１方向他方側へ突出して形成される。すなわち、絶縁部材２は、基部２０と、基部２０から第１方向における連結部材１側に突出する第１爪部２１および第２爪部２２を有する。 FIG. 11 is an enlarged plan view of the insulating member 2A. The insulating member 2A extends in a plane in the first direction and the second direction. The insulating member 2A has a base portion 20, a pair of first claw portions 21, and a pair of second claw portions. The pair of first claw portions 21 and the pair of second claw portions 22 are formed so as to project from the other end of the base 20 in the first direction toward the other side in the first direction. That is, the insulating member 2 has a base portion 20, and a first claw portion 21 and a second claw portion 22 projecting from the base portion 20 toward the connecting member 1 in the first direction.

図１１に示すように、基部２０は、傾斜縁部２０１，２０２，２０３，２０４を有する。傾斜縁部２０１は、基部２０の第１方向一方側端部から延び、第１方向他方側へ向かうほど第２方向他方側へ傾く。このような傾斜縁部２０１により、基部２０の隅部を切り欠いた形状となり、絶縁部材２Ａをコイル部１２２間に挟んだ際に、絶縁部材２Ａのコイルエンド１２２１よりはみ出す部分を削減できる。 As shown in FIG. 11, the base 20 has inclined edges 201, 202, 203, 204. The inclined edge portion 201 extends from one side end portion in the first direction of the base portion 20, and inclines toward the other side in the second direction toward the other side in the first direction. With such an inclined edge portion 201, the corner portion of the base portion 20 is cut out, and when the insulating member 2A is sandwiched between the coil portions 122, the portion of the insulating member 2A that protrudes from the coil end 1221 can be reduced.

また、傾斜縁部２０２は、傾斜縁部２０１の第１方向他方側端部から延び、第１方向他方側へ向かうほど第２方向一方側へ傾く。このような傾斜縁部２０２により、基部２０の隅部を切り欠いた形状となり、絶縁部材２Ａをコイル部１２２間に挟んだ際に、絶縁部材２Ａのスロット紙１２５との干渉を抑制できる。 Further, the inclined edge portion 202 extends from the other side end portion in the first direction of the inclined edge portion 201, and inclines toward one side in the second direction toward the other side in the first direction. With such an inclined edge portion 202, the corner portion of the base portion 20 is cut out, and when the insulating member 2A is sandwiched between the coil portions 122, interference of the insulating member 2A with the slot paper 125 can be suppressed.

また、傾斜縁部２０３は、基部２０の第１方向一方側端部から延び、第１方向他方側へ向かうほど第２方向一方側へ傾く。このような傾斜縁部２０３により、基部２０の隅部を切り欠いた形状となり、絶縁部材２Ａをコイル部１２２間に挟んでからコイルエンド１２２１を押圧した状態（図２）において、絶縁部材２Ａのコイルエンド１２２１よりはみ出す部分を削減できる。 Further, the inclined edge portion 203 extends from one side end portion in the first direction of the base portion 20, and inclines toward one side in the second direction toward the other side in the first direction. With such an inclined edge portion 203, the corner portion of the base portion 20 is cut out, and the insulating member 2A is sandwiched between the coil portions 122 and then the coil end 1221 is pressed (FIG. 2). The portion protruding from the coil end 1221 can be reduced.

また、傾斜縁部２０４は、基部２０の第２方向一方側端部から延び、第１方向他方側へ向かうほど第２方向他方側へ傾く。このような傾斜縁部２０４により、基部２０の隅部を切り欠いた形状となり、絶縁部材２Ａをコイル部１２２間に挟んだ際に、絶縁部材２Ａのスロット紙１２５との干渉を抑制できる。 Further, the inclined edge portion 204 extends from the end portion on one side in the second direction of the base portion 20, and is inclined toward the other side in the second direction toward the other side in the first direction. With such an inclined edge portion 204, the corner portion of the base portion 20 is cut out, and when the insulating member 2A is sandwiched between the coil portions 122, interference of the insulating member 2A with the slot paper 125 can be suppressed.

また、図１１に示すように、第１爪部２１と基部２０、および第２爪部２２と基部２０に挟まれて一対の第１溝部２３が形成される。第１溝部２３は、凹部とも捉えられ、以下説明する他の溝部についても同様である。すなわち、第１溝部２３は、第１爪部２１および第２爪部２２の各々と基部２０とに挟まれて形成される。一対の第１溝部２３を構成するそれぞれの溝部は、第２方向において互いに離れる方向に凹む。また、一対の第１溝部２３は、第２方向に２つ並んで配置される。ここで、後述する図１３に示すように、第１溝部２３は、第１方向に対向する縁のうち、第１方向他方側に配置される溝部縁２３Ａと、第１方向一方側に配置される溝部縁２３Ｂと、溝部縁２３Ａ，２３Ｂを連結する底部２３Ｃと、を有する。すなわち、第１溝部２３は、第１方向に対向する縁のうち連結部材１側に配置される溝部縁２３Ａを有する。 Further, as shown in FIG. 11, a pair of first groove portions 23 is formed by being sandwiched between the first claw portion 21 and the base portion 20 and the second claw portion 22 and the base portion 20. The first groove portion 23 is also regarded as a recess, and the same applies to the other groove portions described below. That is, the first groove portion 23 is formed by being sandwiched between each of the first claw portion 21 and the second claw portion 22 and the base portion 20. Each of the groove portions forming the pair of first groove portions 23 is recessed in a direction away from each other in the second direction. Further, two pairs of first groove portions 23 are arranged side by side in the second direction. Here, as shown in FIG. 13 described later, the first groove portion 23 is arranged on one side of the first direction with the groove portion edge 23A arranged on the other side of the first direction among the edges facing the first direction. It has a groove portion edge 23B and a bottom portion 23C connecting the groove portion edges 23A and 23B. That is, the first groove portion 23 has a groove portion edge 23A arranged on the connecting member 1 side among the edges facing in the first direction.

このように、本実施形態では、絶縁部材２の第１方向における連結部材１側の端部には、第１溝部２３が設けられる。 As described above, in the present embodiment, the first groove portion 23 is provided at the end portion of the insulating member 2 on the connecting member 1 side in the first direction.

図１２は、連結部材１における第１方向一方側の構成を拡大した平面図である。図１２に示すように、一対の脚部１１のうちの脚部１１Ａの連結部１２Ａとの連結部分である第１方向一方側端部には、一対の第２溝部１１１が形成される。第２溝部１１１は、第２方向において向き合って凹む。 FIG. 12 is an enlarged plan view of the configuration of the connecting member 1 on one side in the first direction. As shown in FIG. 12, a pair of second groove portions 111 are formed at one end of the pair of leg portions 11 in the first direction, which is a connecting portion of the leg portion 11A with the connecting portion 12A. The second groove portion 111 faces each other in the second direction and is recessed.

図１２に示すように、連結部材１は、第１方向に延びる連結部材１の中心線Ｃ２に対して、第２方向に線対称の形状を有する。これにより、一対の脚部１１のうちの脚部１１Ｂの第１方向一方側端部にも、一対の第２溝部１１１が形成される。 As shown in FIG. 12, the connecting member 1 has a shape that is line-symmetrical in the second direction with respect to the center line C2 of the connecting member 1 extending in the first direction. As a result, the pair of second groove portions 111 is also formed at the one-side end portion in the first direction of the leg portion 11B of the pair of leg portions 11.

ここで、後述する図１３に示すように、第２溝部１１１は、第１方向に対向する縁のうち、第１方向一方側に配置される溝部縁１１１Ａと、第１方向他方側に配置される溝部縁１１１Ｂと、溝部縁１１１Ａ，１１１Ｂを連結する底部１１１Ｃと、を有する。 Here, as shown in FIG. 13 described later, the second groove portion 111 is arranged on one side of the first direction and the other side of the first direction among the edges facing the first direction. It has a groove portion edge 111B and a bottom portion 111C connecting the groove portion edges 111A and 111B.

脚部１１Ａにおける一対の第２溝部１１１が絶縁部材２Ａにおける第２方向一方側の一対の第１溝部２３に嵌め合わされ、脚部１１Ｂにおける一対の第２溝部１１１が絶縁部材２Ａにおける第２方向他方側の一対の第１溝部２３に嵌め合わされ、連結部材１が絶縁部材２Ａと連結される。 A pair of second groove portions 111 in the leg portion 11A are fitted into a pair of first groove portions 23 on one side in the second direction of the insulating member 2A, and a pair of second groove portions 111 in the leg portion 11B are fitted in the second direction and the other in the insulating member 2A. It is fitted into a pair of first groove portions 23 on the side, and the connecting member 1 is connected to the insulating member 2A.

すなわち、連結部材１には、第１溝部２３と嵌め合う第２溝部１１１が設けられる。貫通孔とは異なり溝部には縁の一部が開いた開口が形成されているため、第１溝部２３と第２溝部１１１とを嵌め合う際にも、溝部の開口同士が嵌り合うように連結部材１を絶縁部材２Ａに組み付ける。これによれば、絶縁シートを組み立てる際に、絶縁部材に形成された挿入孔に連結部材に形成された突起を挿入して連結部材を絶縁部材に組み付ける構成に比べて、溝部同士の位置がずれた場合であっても第１溝部２３と第２溝部１１１が嵌り合い易い。すなわち、絶縁シート１２３の組み立て性を向上させることができる。 That is, the connecting member 1 is provided with a second groove portion 111 that fits with the first groove portion 23. Unlike the through hole, the groove has an opening with a part of the edge open, so that when the first groove 23 and the second groove 111 are fitted, the openings of the grooves are connected so as to fit each other. Assemble the member 1 to the insulating member 2A. According to this, when assembling the insulating sheet, the positions of the grooves are displaced from each other as compared with the configuration in which the protrusions formed in the connecting member are inserted into the insertion holes formed in the insulating member and the connecting member is assembled to the insulating member. Even in this case, the first groove portion 23 and the second groove portion 111 are easily fitted together. That is, the assembling property of the insulating sheet 123 can be improved.

絶縁部材２Ａと連結部材１との連結方法について、図１３から図１５を参照して、より具体的に説明する。図１３は、絶縁部材２Ａとの連結のために連結部材１を絶縁部材２Ａに近づけた状態を示す要部拡大図である。 The method of connecting the insulating member 2A and the connecting member 1 will be described more specifically with reference to FIGS. 13 to 15. FIG. 13 is an enlarged view of a main part showing a state in which the connecting member 1 is brought close to the insulating member 2A for connection with the insulating member 2A.

図１３に示すように、一対の第１爪部２１および一対の第２爪部２２は、第１方向に延びる軸Ｃ３に対して、第２方向に線対称である。一対の第１爪部２１は、一対の第２爪部２２より内側に配置される。 As shown in FIG. 13, the pair of first claw portions 21 and the pair of second claw portions 22 are line-symmetrical in the second direction with respect to the axis C3 extending in the first direction. The pair of first claw portions 21 are arranged inside the pair of second claw portions 22.

第１爪部２１は、傾斜縁部２１Ａを有する。傾斜縁部２１Ａは、第２爪部２２側に向かうにつれて第１方向一方側へ傾斜する。すなわち、第１爪部２１は、第２爪部２２側に向かうにつれて第１方向における連結部材１側と反対側へ傾斜する傾斜縁部２１Ａを有する。 The first claw portion 21 has an inclined edge portion 21A. The inclined edge portion 21A inclines toward one side in the first direction toward the second claw portion 22 side. That is, the first claw portion 21 has an inclined edge portion 21A that inclines toward the side opposite to the connecting member 1 side in the first direction toward the second claw portion 22 side.

第２爪部２２は、第２方向における第１爪部２１側に突出する突起部２２Ａを有する。 The second claw portion 22 has a protrusion 22A protruding toward the first claw portion 21 in the second direction.

連結部材１を絶縁部材２Ａに連結させる組み付け工程においては、絶縁部材２Ａの第２方向の両端部を図１３の紙面手前側、絶縁部材２Ａの第２方向の中央部を図１３の紙面奥側に位置するように、絶縁部材２Ａを曲げる。このように絶縁部材２Ａを曲げた状態において、手前側に位置する突起部２２Ａに、一対の第２溝部１１１のうち外側の第２溝部１１１の溝部縁１１１Ｂを引っ掛ける。一対の第２爪部２２は、一対の第１爪部２１の外側に配置されるので、上記のように絶縁部材２Ａを曲げた状態で第２爪部２２に第２溝部１１１を引っ掛けやすい。 In the assembling step of connecting the connecting member 1 to the insulating member 2A, both ends of the insulating member 2A in the second direction are on the front side of the paper surface of FIG. 13, and the central portion of the insulating member 2A in the second direction is on the back side of the paper surface of FIG. The insulating member 2A is bent so as to be located at. In the state where the insulating member 2A is bent in this way, the groove portion edge 111B of the outer second groove portion 111 of the pair of second groove portions 111 is hooked on the protrusion 22A located on the front side. Since the pair of second claw portions 22 are arranged outside the pair of first claw portions 21, it is easy to hook the second groove portion 111 on the second claw portion 22 with the insulating member 2A bent as described above.

そして、一対の第２溝部１１１のうち内側の第２溝部１１１の溝部縁１１１Ｂを第１爪部２１の傾斜縁部２１Ａに接触させ、連結部材１を絶縁部材２Ａ側に押し込む。この際、傾斜縁部２１Ａの傾きにより、連結部材１を押し込みやすい。 Then, of the pair of second groove portions 111, the groove portion edge 111B of the inner second groove portion 111 is brought into contact with the inclined edge portion 21A of the first claw portion 21, and the connecting member 1 is pushed toward the insulating member 2A side. At this time, the connecting member 1 is easily pushed in due to the inclination of the inclined edge portion 21A.

上記のように連結部材１を押し込むことにより、一対の第２溝部１１１が一対の第１溝部２３に嵌め合い、連結部材１が絶縁部材２Ａに組み付けられる。連結部材１を絶縁部材２Ａに組み付けた状態の表側の要部拡大図を図１４に示し、裏側の要部拡大図を図１５に示す。このように、脚部１１Ａ，１１Ｂが絶縁部材２Ａよりも裏側に配置され、連結部１２Ａが絶縁部材２Ａよりも表側に配置された状態で、第１溝部２３と第２溝部１１１とが嵌め合う（噛み合う）。第１溝部２３と第２溝部１１１とが嵌め合った状態では、溝部縁１１１Ａが溝部縁２３Ａに接触可能であり、連結部材１の絶縁部材２Ａからの分離が妨げられる。 By pushing the connecting member 1 as described above, the pair of second groove portions 111 are fitted into the pair of first groove portions 23, and the connecting member 1 is assembled to the insulating member 2A. FIG. 14 shows an enlarged view of the main part on the front side in a state where the connecting member 1 is assembled to the insulating member 2A, and FIG. 15 shows an enlarged view of the main part on the back side. In this way, the first groove portion 23 and the second groove portion 111 are fitted together with the leg portions 11A and 11B arranged on the back side of the insulating member 2A and the connecting portion 12A arranged on the front side of the insulating member 2A. (Meat). In the state where the first groove portion 23 and the second groove portion 111 are fitted, the groove portion edge 111A can come into contact with the groove portion edge 23A, and the separation of the connecting member 1 from the insulating member 2A is hindered.

また、図１６に示すように、絶縁部材２Ａは、溝部縁２３Ａと第１方向に対向する対向縁２Ａ１を有する。溝部縁２３Ａにおける第１溝部２３の底部２３Ｃ側の端部２３Ａ１と、対向縁２Ａ１との最小距離Ｄ１は、溝部縁２３Ａの長さＤ２よりも長い。これにより、連結部材１による引っ張り力により、溝部縁２３Ａ付近の箇所が破れることを抑制できる。 Further, as shown in FIG. 16, the insulating member 2A has an opposite edge 2A1 facing the groove edge 23A in the first direction. The minimum distance D1 between the end 23A1 on the bottom 23C side of the first groove 23 and the facing edge 2A1 in the groove edge 23A is longer than the length D2 of the groove edge 23A. As a result, it is possible to prevent the portion near the groove edge 23A from being torn due to the pulling force of the connecting member 1.

また、絶縁部材２Ａが第１爪部２１および第２爪部２２を有するので、絶縁部材２Ａに組み付けた連結部材１が外れにくくなる。 Further, since the insulating member 2A has the first claw portion 21 and the second claw portion 22, the connecting member 1 assembled to the insulating member 2A is less likely to come off.

また、連結部材１において、各々の脚部１１Ａ，１１Ｂに第２溝部１１１が設けられ、連結部１２Ａが脚部１１Ａ，１１Ｂ同士を連結するので、各々の脚部が別個に分離している場合よりも連結部材１を絶縁部材２Ａに組み付ける工数を削減できる。 Further, in the connecting member 1, the second groove portion 111 is provided in each of the leg portions 11A and 11B, and the connecting portion 12A connects the leg portions 11A and 11B to each other. Therefore, the man-hours for assembling the connecting member 1 to the insulating member 2A can be reduced.

また、図１２に示すように、第２溝部１１１は、脚部１１Ａにおける第２方向に対向する縁１１Ａ１，１１Ａ２のそれぞれに設けられる。すなわち、連結部材１における第２方向に対向する縁１１Ａ１，１１Ａ２の各々に、互いに第２方向において近づく方向に凹む第２溝部１１１が設けられる。このような第２溝部１１１に第１溝部２３が嵌め合うので、連結部材１が絶縁部材２Ａにより第２方向の両側から挟み込まれ、絶縁部材２Ａと連結部材１が分離することを抑制できる。 Further, as shown in FIG. 12, the second groove portion 111 is provided on each of the edges 11A1 and 11A2 of the leg portion 11A facing in the second direction. That is, each of the edges 11A1 and 11A2 of the connecting member 1 facing in the second direction is provided with a second groove portion 111 that is recessed in a direction approaching each other in the second direction. Since the first groove portion 23 is fitted into such a second groove portion 111, it is possible to prevent the connecting member 1 from being sandwiched by the insulating member 2A from both sides in the second direction and separating the insulating member 2A and the connecting member 1.

また、図１３に示すように、溝部縁２３Ａは、溝部縁１１１Ｂに対して傾斜する。すなわち、第１溝部２３における第１方向に対向する縁のうち連結部材１側に配置される溝部縁２３Ａは、第２溝部１１１における第１方向に対向する縁のうち絶縁部材２Ａ側と反対側に配置される溝部縁１１１Ｂに対して傾斜する。これにより、連結部材１を絶縁部材２Ａに組み付けやすくなる。また、組み付け後に溝部縁２３Ａ付近の箇所が破れにくくなる。 Further, as shown in FIG. 13, the groove edge 23A is inclined with respect to the groove edge 111B. That is, the groove portion 23A arranged on the connecting member 1 side of the edges of the first groove portion 23 facing the first direction is on the side opposite to the insulating member 2A side of the edges of the second groove portion 111 facing the first direction. It is inclined with respect to the groove edge 111B arranged in. This makes it easier to assemble the connecting member 1 to the insulating member 2A. In addition, the portion near the groove edge 23A is less likely to be torn after assembly.

また、図１３に示すように、絶縁部材２Ａは、一対の溝部２３の２組に第２方向に挟まれる位置に第１方向一方側に凹む凹部２４を有する。また、連結部１２Ａは、脚部１１Ａ，１１Ｂにより第２方向に挟まれる位置に、連結部１２Ａの第１方向他方側端から第１方向一方側へ凹む凹部１２Ａ１を有する。そして、図１４および図１５に示すように、連結部材１を絶縁部材２Ａに組み付けた状態で、凹部２４と凹部１２Ａ１とから第１方向一方側へ凹む凹部Ｈが形成される。すなわち、絶縁部材２Ａは、第１方向における連結部材１側と反対側に凹む凹部Ｈを有する。これにより、結束部材１２４を凹部Ｈに通すことができる。 Further, as shown in FIG. 13, the insulating member 2A has a recess 24 recessed on one side in the first direction at a position sandwiched between two sets of the pair of groove portions 23 in the second direction. Further, the connecting portion 12A has a recess 12A1 recessed from the other end in the first direction to one side in the first direction of the connecting portion 12A at a position sandwiched by the legs 11A and 11B in the second direction. Then, as shown in FIGS. 14 and 15, with the connecting member 1 assembled to the insulating member 2A, a recess H recessed from the recess 24 and the recess 12A1 to one side in the first direction is formed. That is, the insulating member 2A has a recess H recessed on the side opposite to the connecting member 1 side in the first direction. As a result, the binding member 124 can be passed through the recess H.

また、連結部１２Ａは、接着剤により絶縁部材２Ａに接着されていてもよい。すなわち、連結部材１は、絶縁部材２Ａに接着剤を介して接続されてもよい。これにより、第１溝部２３と第２溝部１１１との嵌め合いに加えて、接着剤により連結部材１は絶縁部材２Ａに接続されるので、絶縁部材２Ａと連結部材１が分離することを抑制できる。 Further, the connecting portion 12A may be adhered to the insulating member 2A with an adhesive. That is, the connecting member 1 may be connected to the insulating member 2A via an adhesive. As a result, in addition to the fitting of the first groove portion 23 and the second groove portion 111, the connecting member 1 is connected to the insulating member 2A by the adhesive, so that the insulating member 2A and the connecting member 1 can be prevented from being separated. ..

ただし、連結部材１は、第１溝部２３と第２溝部１１１との嵌め合いのみによって絶縁部材２Ａに接続されてもよい。これにより、接着が不要となるので、コストおよび工数を削減できる。 However, the connecting member 1 may be connected to the insulating member 2A only by fitting the first groove portion 23 and the second groove portion 111. As a result, adhesion is not required, so that cost and man-hours can be reduced.

また、図１７は、異なるコイル部１２２Ａ，１２２Ｂ間に絶縁部材２Ａを挟み込んだ状態での、絶縁部材２Ａに対するコイル部１２２Ａ，１２２Ｂの位置関係を示した図である。コイル部１２２Ａ（破線）は、絶縁部材２Ａに対して図１７の紙面奥側に位置し、コイル部１２２Ｂ（一点鎖線）は、絶縁部材２Ａに対して図１７の紙面手前側に位置する。なお、紙面手前側は、径方向内方となる。 Further, FIG. 17 is a diagram showing the positional relationship of the coil portions 122A and 122B with respect to the insulating member 2A in a state where the insulating member 2A is sandwiched between the different coil portions 122A and 122B. The coil portion 122A (broken line) is located on the back side of the paper surface of FIG. 17 with respect to the insulating member 2A, and the coil portion 122B (dashed line) is located on the front side of the paper surface of FIG. 17 with respect to the insulating member 2A. The front side of the paper is inward in the radial direction.

図１７に示すように、コイル部１２２Ａ，１２２Ｂが重なる領域である絶縁領域ＲＢは、第１溝部２３と第２溝部１１１とが嵌め合わされる領域ＲＡとは重ならない。これにより、絶縁領域ＲＢにおいて、絶縁性能が低下することを抑制できる。 As shown in FIG. 17, the insulating region RB, which is a region where the coil portions 122A and 122B overlap, does not overlap with the region RA where the first groove portion 23 and the second groove portion 111 are fitted. Thereby, it is possible to suppress the deterioration of the insulation performance in the insulation region RB.

＜５．絶縁シートの第２実施形態＞
以下、絶縁シート１２３の各種変形例について述べる。なお、以下の変形例では、第１実施形態と同様に、絶縁シート１２３は第２方向に延びる中心線Ｃ１（図９参照）に対して第１方向に線対称な形状を有する。 <5. Second Embodiment of Insulation Sheet>
Hereinafter, various modifications of the insulating sheet 123 will be described. In the following modification, the insulating sheet 123 has a shape that is line-symmetrical in the first direction with respect to the center line C1 (see FIG. 9) extending in the second direction, as in the first embodiment.

図１８は、第２実施形態に係る絶縁シート１２３２を分解した状態の一部平面図である。絶縁シート１２３２において、絶縁部材２Ａは、第１方向他方側端部に第１方向一方側へ凹む凹部２５を有する。凹部２５の縁には、第２方向において互いに離れる方向に凹む一対の第１溝部２６が形成される。 FIG. 18 is a partial plan view of the insulating sheet 1232 according to the second embodiment in a disassembled state. In the insulating sheet 1232, the insulating member 2A has a recess 25 recessed to one side in the first direction at the other end in the first direction. On the edge of the recess 25, a pair of first groove portions 26 that are recessed in a direction away from each other in the second direction are formed.

また、絶縁シート１２３２において、連結部材１は、第１実施形態と同様に、一対の脚部１１Ａ，１１Ｂと、脚部１１Ａ，１１Ｂを連結する連結部１２Ａを有する。脚部１１Ａ，１１Ｂそれぞれの第１方向一方側端部には第２溝部１１１が形成される。一対の第２溝部１１１は、第２方向において互いに近づく方向に凹む。第２溝部１１１が第１溝部２６に嵌め合わされることで、連結部材１が絶縁部材２Ａに組み付けられる。 Further, in the insulating sheet 1232, the connecting member 1 has a pair of legs 11A and 11B and a connecting portion 12A for connecting the legs 11A and 11B, as in the first embodiment. A second groove 111 is formed at one end of each of the legs 11A and 11B in the first direction. The pair of second groove portions 111 are recessed in a direction approaching each other in the second direction. By fitting the second groove portion 111 into the first groove portion 26, the connecting member 1 is assembled to the insulating member 2A.

また、本実施形態では、絶縁部材２Ａは、凹部２５の２つの第１方向他方側端部からそれぞれ第１方向他方側へ延びる挿入部２７を有する。絶縁シート１２３２がスロットＳに組み付けられる際に、挿入部２７がスロットＳへ挿入される。これにより、挿入部２７付近で絶縁部材２Ａが破れた場合でも、破れて残った挿入部２７がスロットＳ内に留まりやすい。 Further, in the present embodiment, the insulating member 2A has an insertion portion 27 extending from two end portions on the other side of the first direction of the recess 25 to the other side in the first direction, respectively. When the insulating sheet 1232 is assembled into the slot S, the insertion portion 27 is inserted into the slot S. As a result, even if the insulating member 2A is torn near the insertion portion 27, the torn and remaining insertion portion 27 tends to stay in the slot S.

＜６．絶縁シートの第３実施形態＞
図１９は、第３実施形態に係る絶縁シート１２３３を分解した状態の一部平面図である。なお、以下述べる図１９から図２１については、絶縁シート１２３の概略図となる。 <6. Third Embodiment of Insulation Sheet>
FIG. 19 is a partial plan view of the insulating sheet 1233 according to the third embodiment in a disassembled state. Note that FIGS. 19 to 21 described below are schematic views of the insulating sheet 123.

絶縁シート１２３３では、第１実施形態と同様に、絶縁部材２Ａは、第１爪部２１、第２爪部２２、および一対の第１溝部２３を有し、第１溝部２３に連結部材１の第２溝部１１１が嵌め合わされる。本実施形態では、第１溝部２３および第２溝部１１１が、第２方向に延び第１方向の幅が狭いスリット状に形成される。 In the insulating sheet 1233, as in the first embodiment, the insulating member 2A has a first claw portion 21, a second claw portion 22, and a pair of first groove portions 23, and the connecting member 1 is connected to the first groove portion 23. The second groove portion 111 is fitted. In the present embodiment, the first groove portion 23 and the second groove portion 111 are formed in a slit shape extending in the second direction and narrow in the first direction.

＜７．絶縁シートの第４実施形態＞
図２０は、第４実施形態に係る絶縁シート１２３４を分解した状態の一部平面図である。絶縁シート１２３４では、絶縁部材２Ａは、第１方向他方側端部に第２方向において互いに近づく方向に凹む一対の第１溝部２３を有する。絶縁シート１２３４において、連結部材１は、第１実施形態と同様に、一対の脚部１１Ａ，１１Ｂと、脚部１１Ａ，１１Ｂを連結する連結部１２Ａを有する。そして、脚部１１Ａ，１１Ｂそれぞれの第１方向一方側端部には第２溝部１１１が形成される。一対の第２溝部１１１は、第２方向において互いに離れる方向に凹む。 <7. Fourth Embodiment of Insulation Sheet>
FIG. 20 is a partial plan view of the insulating sheet 1234 according to the fourth embodiment in a disassembled state. In the insulating sheet 1234, the insulating member 2A has a pair of first groove portions 23 recessed in the direction opposite to each other in the second direction at the other end portion in the first direction. In the insulating sheet 1234, the connecting member 1 has a pair of legs 11A and 11B and a connecting portion 12A that connects the legs 11A and 11B, as in the first embodiment. A second groove 111 is formed at one end of each of the legs 11A and 11B in the first direction. The pair of second groove portions 111 are recessed in a direction away from each other in the second direction.

第２溝部１１１が第１溝部２３に嵌め合わされることで、連結部材１が絶縁部材２Ａに組み付けられる。第１から第３実施形態では、第１溝部と第２溝部が嵌め合った状態で、連結部材１の外側から絶縁部材２Ａが連結部材１を挟み込むが、本実施形態では、絶縁部材２Ａの外側から連結部材１が絶縁部材２Ａを挟み込むことになる。 By fitting the second groove portion 111 into the first groove portion 23, the connecting member 1 is assembled to the insulating member 2A. In the first to third embodiments, the insulating member 2A sandwiches the connecting member 1 from the outside of the connecting member 1 in a state where the first groove portion and the second groove portion are fitted to each other. The connecting member 1 sandwiches the insulating member 2A.

＜８．絶縁シートの第５実施形態＞
図２１は、第５実施形態に係る絶縁シート１２３５を分解した状態の一部平面図である。絶縁シート１２３５では、絶縁部材２Ａは、第１方向他方側端部に一対の第１溝部２３１Ａと一対の第１溝部２３１Ｂを有する。一対の第１溝部２３１Ａと、一対の第１溝部２３１Ｂは、第２方向に並んで配置される。一対の第１溝部２３１Ａおよび一対の第１溝部２３１Ｂはともに、第２方向において互いに離れる方向に凹む。 <8. Fifth Embodiment of Insulation Sheet>
FIG. 21 is a partial plan view of the insulating sheet 1235 according to the fifth embodiment in a disassembled state. In the insulating sheet 1235, the insulating member 2A has a pair of first groove portions 231A and a pair of first groove portions 231B at the other end in the first direction. The pair of first groove portions 231A and the pair of first groove portions 231B are arranged side by side in the second direction. Both the pair of first groove portions 231A and the pair of first groove portions 231B are recessed in a direction away from each other in the second direction.

また、絶縁シート１２３５は、個別の部材である連結部材１Ａ，１Ｂを有する。すなわち、本実施形態では、脚部に相当する連結部材１Ａ，１Ｂは、連結部により連結されず、分離している。連結部材１Ａは、第１方向一方側端部に第２方向において互いに近づく方向に凹む一対の第２溝部１Ａ１を有する。連結部材１Ｂは、第１方向一方側端部に第２方向において互いに近づく方向に凹む一対の第２溝部１Ｂ１を有する。 Further, the insulating sheet 1235 has connecting members 1A and 1B which are individual members. That is, in the present embodiment, the connecting members 1A and 1B corresponding to the legs are not connected by the connecting portion but are separated. The connecting member 1A has a pair of second groove portions 1A1 recessed in one side end portion in the first direction in a direction approaching each other in the second direction. The connecting member 1B has a pair of second groove portions 1B1 recessed in one side end portion in the first direction in a direction approaching each other in the second direction.

第２溝部１Ａ１が第１溝部２３１Ａに嵌め合わされることで、連結部材１Ａが絶縁部材２Ａに組み付けられる。第２溝部１Ｂ１が第１溝部２３１Ｂに嵌め合わされることで、連結部材１Ｂが絶縁部材２Ａに組み付けられる。 By fitting the second groove portion 1A1 to the first groove portion 231A, the connecting member 1A is assembled to the insulating member 2A. By fitting the second groove portion 1B1 into the first groove portion 231B, the connecting member 1B is assembled to the insulating member 2A.

＜９．その他＞
以上、本発明の実施形態を説明した。なお、本発明の範囲は上述の実施形態に限定されない。本発明は、発明の主旨を逸脱しない範囲で上述の実施形態に種々の変更を加えて実施することができる。また、上述の実施形態で説明した事項は、矛盾を生じない範囲で適宜任意に組み合わせることができる。 <9. Others>
The embodiments of the present invention have been described above. The scope of the present invention is not limited to the above-described embodiment. The present invention can be implemented by making various modifications to the above-described embodiment without departing from the gist of the invention. In addition, the items described in the above-described embodiments can be arbitrarily combined as long as they do not cause a contradiction.

例えば、第１溝部は、絶縁部材の第１方向における連結部材側と反対側の端部に設けてもよい。また、例えば、第１溝部は、絶縁部材の第１方向における中央位置付近に設けてもよい。すなわち、第１溝部は、絶縁部材の第１方向における連結部材側の端部に設けなくてもよい。また、第２溝部は、必ずしも連結部材の第１方向端部に設けてなくてもよい。 For example, the first groove portion may be provided at the end portion of the insulating member on the side opposite to the connecting member side in the first direction. Further, for example, the first groove portion may be provided near the central position of the insulating member in the first direction. That is, the first groove portion does not have to be provided at the end portion of the insulating member on the connecting member side in the first direction. Further, the second groove portion does not necessarily have to be provided at the end portion in the first direction of the connecting member.

上記のように、例えば、第１溝部を絶縁部材の第１方向における中央位置付近に設けた構成等も採用しうるため、絶縁部材の第１方向端部と連結部材の第１方向端部とが接続される構成には限られない。 As described above, for example, a configuration in which the first groove portion is provided near the center position in the first direction of the insulating member can be adopted, so that the first direction end portion of the insulating member and the first direction end portion of the connecting member can be used. Is not limited to the configuration in which is connected.

本発明は、一例として、車載用モータなどに利用することができる。 The present invention can be used as an example for an in-vehicle motor or the like.

１００・・・モータ、１１・・・ロータ、１１０・・・シャフト、１１１・・・ロータコア、１１２・・・マグネット、１２・・・ステータ、１２１・・・ステータコア、１２２・・・コイル部、１２２ｕ・・・Ｕ相コイル部、１２２ｖ・・・Ｖ相コイル部、１２２ｗ・・・Ｗ相コイル部、１２２１・・・コイルエンド、１２２２・・・直線部、１２３（１２３１，１２３２，１２３３，１２３４，１２３５）・・・絶縁シート、１，１Ａ，１Ｂ・・・連結部材、１Ａ１，１Ｂ１・・・第２溝部、１１（１１Ａ，１１Ｂ）・・・脚部、１１１・・・第２溝部、１１１Ａ，１１１Ｂ・・・溝部縁、１１１Ｃ・・・底部、１２（１２Ａ，１２Ｂ）・・・連結部、１２Ａ１・・・凹部、２（２Ａ，２Ｂ）・・・絶縁部材、２Ａ１・・・対向縁、２０・・・基部、２１・・・第１爪部、２１Ａ・・・傾斜縁部、２２・・・第２爪部、２２Ａ・・・突起部、２３，２３１Ａ，２３１Ｂ・・・第１溝部、２３Ａ，２３Ｂ・・・溝部縁、２３Ｃ・・・底部、２４・・・凹部、２５・・・凹部、２６・・・第１溝部、２７・・・挿入部、Ｈ・・・凹部１２４・・・結束部材、１２５・・・スロット紙、Ｓ・・・スロット、４００・・・ハウジング、４０１・・・モータハウジング、４０２・・・減速ハウジング、７００・・・電動駆動装置、ｄｘ・・・第１方向、ｄｘ１・・・第１方向一方、ｄｘ２・・・第１方向他方、ｄｙ・・・第２方向、ｄｙ１・・・第２方向一方、ｄｙ２・・・第２方向他方 100 ... motor, 11 ... rotor, 110 ... shaft, 111 ... rotor core, 112 ... magnet, 12 ... stator, 121 ... stator core, 122 ... coil part, 122u ... U-phase coil part, 122v ... V-phase coil part, 122w ... W-phase coil part, 1221 ... Coil end, 1222 ... Straight part, 123 (1231, 1232, 1233, 1234) 1235) ... Insulation sheet, 1,1A, 1B ... Connecting member, 1A1,1B1 ... Second groove, 11 (11A, 11B) ... Leg, 111 ... Second groove, 111A , 111B ... Groove edge, 111C ... Bottom, 12 (12A, 12B) ... Connecting part, 12A1 ... Recess, 2 (2A, 2B) ... Insulating member, 2A1 ... Opposing edge , 20 ... base, 21 ... first claw, 21A ... inclined edge, 22 ... second claw, 22A ... protrusion, 23,231A, 231B ... first Groove, 23A, 23B ... Groove edge, 23C ... Bottom, 24 ... Recess, 25 ... Recess, 26 ... First groove, 27 ... Insert, H ... Recess 124 ... Bundling member, 125 ... Slot paper, S ... Slot, 400 ... Housing, 401 ... Motor housing, 402 ... Deceleration housing, 700 ... Electric drive, dx ... 1st direction, dx1 ... 1st direction one, dx2 ... 1st direction other, dy ... 2nd direction, dy1 ... 2nd direction one, dy2 ... 2nd direction other

Claims (13)

コイル部間を電気的に絶縁するための一対の絶縁部材と、
一対の前記絶縁部材とは異なる部材により形成され、一対の前記絶縁部材同士を連結する連結部材と、
を有し、
前記連結部材は、第１方向に延び、
前記絶縁部材には、第１溝部が設けられ、
前記連結部材には、前記第１溝部と嵌め合う第２溝部が設けられる、絶縁シート。 A pair of insulating members for electrically insulating the coils,
A connecting member formed of a member different from the pair of the insulating members and connecting the pair of the insulating members to each other.
Have,
The connecting member extends in the first direction and
The insulating member is provided with a first groove portion.
An insulating sheet provided with a second groove portion that fits the first groove portion in the connecting member. 前記第１溝部は、第１方向に対向する縁のうち前記連結部材側に配置される溝部縁を有し、
前記絶縁部材は、前記溝部縁と第１方向に対向する対向縁を有し、
前記溝部縁における前記第１溝部の底部側の端部と、前記対向縁との最小距離は、前記溝部縁の長さよりも長い、
請求項１に記載の絶縁シート。 The first groove portion has a groove portion edge arranged on the connecting member side among the edges facing in the first direction.
The insulating member has an opposite edge facing the groove edge in the first direction.
The minimum distance between the bottom end of the first groove and the opposite edge of the groove edge is longer than the length of the groove edge.
The insulating sheet according to claim 1. 前記連結部材は、前記絶縁部材に接着剤を介して接続される、請求項１または請求項２に記載の絶縁シート。 The insulating sheet according to claim 1 or 2, wherein the connecting member is connected to the insulating member via an adhesive. 前記連結部材は、前記第１溝部と前記第２溝部との嵌め合いのみによって前記絶縁部材に接続される、請求項１または請求項２に記載の絶縁シート。 The insulating sheet according to claim 1 or 2, wherein the connecting member is connected to the insulating member only by fitting the first groove portion and the second groove portion. 前記連結部材は、第１方向に延びる２つの脚部と、前記脚部の第１方向端部同士を連結する連結部と、を有し、
各々の前記脚部に前記第２溝部が設けられる、請求項１から請求項４のいずれか１項に記載の絶縁シート。 The connecting member has two legs extending in the first direction and a connecting portion for connecting the ends of the legs in the first direction.
The insulating sheet according to any one of claims 1 to 4, wherein the second groove portion is provided in each leg portion. 前記連結部材における前記第１方向と直交する第２方向に対向する縁の各々に、互いに第２方向において近づく方向に凹む前記第２溝部が設けられる、請求項１から請求項５のいずれか１項に記載の絶縁シート。 Any one of claims 1 to 5, wherein each of the edges of the connecting member facing the second direction orthogonal to the first direction is provided with the second groove portion recessed in a direction approaching each other in the second direction. Insulation sheet as described in the section. 前記絶縁部材は、基部と、前記基部から第１方向における前記連結部材側に突出する第１爪部および第２爪部を有し、
前記第１溝部は、前記第１爪部および前記第２爪部の各々と前記基部とに挟まれて形成される、請求項６に記載の絶縁シート。 The insulating member has a base portion and a first claw portion and a second claw portion protruding from the base portion toward the connecting member side in a first direction.
The insulating sheet according to claim 6, wherein the first groove portion is formed by being sandwiched between each of the first claw portion and the second claw portion and the base portion. 前記第１爪部は、前記第２爪部側に向かうにつれて第１方向における前記連結部材側と反対側へ傾斜する傾斜縁部を有する、請求項７に記載の絶縁シート。 The insulating sheet according to claim 7, wherein the first claw portion has an inclined edge portion that inclines toward the side opposite to the connecting member side in the first direction toward the second claw portion side. 一対の前記第１爪部および一対の前記第２爪部は、第１方向に延びる軸に対して、第１方向に直交する第２方向に線対称であり、
一対の前記第１爪部は、一対の前記第２爪部より内側に配置される、請求項８に記載の絶縁シート。 The pair of the first claws and the pair of the second claws are line-symmetrical in the second direction orthogonal to the first direction with respect to the axis extending in the first direction.
The insulating sheet according to claim 8, wherein the pair of the first claws is arranged inside the pair of the second claws. 前記絶縁部材は、第１方向における前記連結部材側と反対側に凹む凹部を有する、請求項１から請求項９のいずれか１項に記載の絶縁シート。 The insulating sheet according to any one of claims 1 to 9, wherein the insulating member has a recessed portion on the side opposite to the connecting member side in the first direction. 前記第１溝部における第１方向に対向する縁のうち前記連結部材側に配置される溝部縁は、前記第２溝部における第１方向に対向する縁のうち前記絶縁部材側と反対側に配置される溝部縁に対して傾斜する、請求項１から請求項１０のいずれか１項に記載の絶縁シート。 Of the edges facing the first direction in the first groove portion, the groove portion edge arranged on the connecting member side is arranged on the side opposite to the insulating member side of the edge facing the first direction in the second groove portion. The insulating sheet according to any one of claims 1 to 10, which is inclined with respect to the groove edge. 周方向に並ぶ複数のスロットが径方向内端部に設けられた環状のステータコアと、
異なる前記スロット間を跨いで設けられた複数のコイル部と、
平面状に展開された状態において請求項１から請求項１１のいずれか１項に記載の構成となる絶縁シートと、
を備え、
前記絶縁部材は、前記ステータの軸方向の両端部において異なる前記コイル部の前記スロットから外部に突出するコイルエンド間を絶縁し、
前記連結部材は、前記スロット内に設けられる、ステータ。 An annular stator core with a plurality of slots arranged in the circumferential direction at the inner end in the radial direction,
A plurality of coil portions provided across the different slots, and
An insulating sheet having the configuration according to any one of claims 1 to 11 in a state of being developed in a plane shape, and an insulating sheet having the configuration according to any one of claims 1 to 11.
With
The insulating member insulates between coil ends protruding outward from the slots of the coil portions that are different at both ends in the axial direction of the stator.
The connecting member is a stator provided in the slot. 中心軸を中心として回転可能なロータと、
前記ロータを駆動する請求項１２に記載のステータと、
を備えるモータ。 A rotor that can rotate around the central axis and
The stator according to claim 12, which drives the rotor, and the stator.
A motor equipped with.
JP2019218094A 2019-12-02 2019-12-02 Insulation sheet, stator, and motor Pending JP2021090242A (en)

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