WO2016088270A1 - Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same - Google Patents

Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same Download PDF

Info

Publication number
WO2016088270A1
WO2016088270A1 PCT/JP2014/082326 JP2014082326W WO2016088270A1 WO 2016088270 A1 WO2016088270 A1 WO 2016088270A1 JP 2014082326 W JP2014082326 W JP 2014082326W WO 2016088270 A1 WO2016088270 A1 WO 2016088270A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
segment coil
collective
stator
adhesive layer
Prior art date
Application number
PCT/JP2014/082326
Other languages
French (fr)
Japanese (ja)
Inventor
田中 雄一郎
孝 石上
Original Assignee
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to PCT/JP2014/082326 priority Critical patent/WO2016088270A1/en
Publication of WO2016088270A1 publication Critical patent/WO2016088270A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors

Definitions

  • the present invention relates to a rotating electrical machine in which a stator is formed using an aggregate conductor segment coil, an aggregate conductor for the aggregate conductor segment coil, and a method of manufacturing the aggregate conductor segment coil.
  • a segment coil bent in a substantially U shape is inserted into a stator core and end portions of the segment coil are connected.
  • a segment coil it is known to suppress eddy current loss by dividing a conductor constituting the coil into a plurality of conductor strands and insulating the conductor strands with an insulating layer.
  • a circulating current may be generated between the plurality of strands.
  • Patent Document 1 is a background art that takes into account the generation of eddy current loss and circulating current.
  • the segment 20 is a substantially U-shaped conductor composed of an aggregate conductor having four conductor strands 32, 34, 36, and 38 arranged in the ⁇ direction.
  • a dislocation portion 50 that twists by changing the order of parallel arrangement of the conductor strands 32, 34, 36, 38 is provided.
  • the dislocation portions 50 are provided in a distributed manner at four positions a, b, c, and d along the extending direction of the crossing portion 26. At these four positions a, b, c, and d, conductors are provided. The strands 32, 34, 36, and 38 change the order of the parallel arrangement sequentially. To. "Is described as (see Abstract).
  • the present invention provides a stator for a rotating electrical machine that improves the characteristics by improving the circumferential length difference between conductor wires generated when the assembly conductor is bent in the laminating direction, regardless of the location and angle of bending.
  • the purpose is to do.
  • an insulating layer is formed on the outer peripheral surface of the plurality of conductor strands and bonded so as to cover the insulating layer.
  • the stator is configured by using a collective conductor segment coil configured such that conductor strands are separated from each other and deformed.
  • the said insulation layer and the said contact bonding layer will be predetermined in the longitudinal direction.
  • the assembly conductor includes a step of fixing the assembly conductor via the adhesive layer by pressing and heating, and a step of cutting the assembly conductor at a portion where the insulating layer and the adhesive layer are removed.
  • an insulating layer is formed on the outer peripheral surface of a plurality of conductor strands, and an adhesive layer is formed so as to cover the insulating layer.
  • the portions corresponding to the bending portions of the coil are made non-fixed so that the conductor wires are separated from each other and deformed, and the assembly The conductor is bent in the stacking direction at the bent portion.
  • the circumferential length difference between the conductor wires generated when the collective conductor is bent in the laminating direction, regardless of the bending location and the bending angle It is possible to improve and improve the characteristics.
  • the circumferential length difference between the conductor wires generated when the assembly conductor is bent in the laminating direction is improved regardless of the bending location and the bending angle. And the characteristics are improved.
  • FIG. 1 is a schematic view of a conventional rotating electrical machine.
  • a U-shaped conductor segment coil made of a copper rectangular wire conductor (rectangular conductor) coated with an enamel or the like on an annular core 2 formed by laminating silicon steel plates. 1 is inserted into the core 2 to form the stator coil 10.
  • lead wires 5 are arranged for three phases of U phase, V phase, and W phase, and the stator 100 is configured as an electric circuit.
  • the outer periphery of the conventional stator 100 is fixed to the housing 3, and although not shown, a rotor in which a plurality of magnets are alternately arranged in the circumferential direction with N poles and S poles in the center of the rotating electrical machine 200.
  • the stator 100 and the stator 100 are rotatably supported through a certain gap (gap).
  • FIG. 2 is a schematic view of a conductor segment coil 1 constituting the conventional stator 100.
  • 2A, 2B, and 2C are a perspective view, a side view, and a front view of the conductor segment coil 1, respectively.
  • the conductor segment coil 1 is formed by forming a copper rectangular wire conductor (rectangular conductor), which is insulation-coated with enamel or the like, into a U-shape. Hereinafter, the folding of the U character will be described as a transition part.
  • the two terminal portions 11 and 12 of the conductor segment coil 1 have a structure in which all four insulating layers have been removed in advance in order to connect to other adjacent conductor segment coils.
  • FIG. 3 is a schematic diagram illustrating a conventional stator structure.
  • FIG. 3A shows the conductor segment coil 1 as viewed from the side.
  • the end portion 15 of the conductor segment coil 1 is inserted into the slot portion of the core 2, the end portion 15 is molded again, and connected to another adjacent conductor segment coil, An electrical circuit is formed.
  • the connection is performed by TIG welding or the like, and the connection portion 4 has a structure concentrated on one side of the stator.
  • FIG. 3C a structure in which four conductor segment coils 1 are inserted into the slots of the core 2 is illustrated.
  • FIG. 4 is a schematic diagram for explaining the collective conductor segment coil of the present embodiment.
  • 4A, 4B, and 4C are a perspective view, a side view, and a front view of the collective conductor segment coil 30, respectively.
  • the collective conductor segment coil is formed by stacking three layers of thin and flat copper rectangular wire conductors (rectangular conductors) that are insulated and coated with enamel or the like.
  • an adhesive layer is formed on the outermost surface of the rectangular conductor, and three layers of conductors are fixed by this adhesive layer. For this reason, even if the collective conductor is formed into a U-shape, the conductor wires 21, 22, and 23 are not separated and can be inserted into the core.
  • FIG. 4 is an image diagram of the collective conductor segment coil 30 of this embodiment. Actually, when the collective conductor is bent in the stacking direction, specifically, there is a difference in circumference between the conductor strands in the crossing portion of FIG. appear. Next, a mechanism for generating this circumference difference will be described.
  • FIG. 5 is a schematic diagram for explaining the circumferential length difference between the conductor wires that occurs when the assembly conductor is bent 90 ° in the stacking direction.
  • a three-layer assembly conductor composed of the conductor wires 31, 32, 33 is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the outer conductor is bent with respect to the conductor wire 31 on the inner side of the bend.
  • the conductor strands 32 and 33 are thinned and thinned, it can be seen that the circumferential lengths 34, 35 and 36 corresponding to 90 ° of the conductor strands become longer in that order.
  • the circumferential length of each conductor strand is different, so that a difference in impedance occurs between the plurality of conductor strands. Circulating current may occur.
  • the extension / thinning of the conductor wires 32 and 33 outside the bend is reduced, and the difference in circumference is improved.
  • FIG. 6 is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment.
  • portions (thick line portions) 44, 45, 46, and 47 are fixed by an adhesive layer on the surface of the conductor wires.
  • the fixing method will be described later.
  • the conductor wires 41 and 42 on the inner side of the bending are made non-fixed by making the portion corresponding to the bending portion non-fixed. Can be bent.
  • a gap generated at the bent portion between the conductor wire 41 inside the bend and the conductor wire 42 outside the bend is t ′, and at the bend portion between the conductor wire 42 inside the bend and the conductor wire 43 outside the bend.
  • the gap is t
  • the relationship t ′> t is established.
  • FIG. 7A and 7B are schematic views of a stator using a conductor segment coil as viewed from the front.
  • FIG. 7A shows a schematic diagram of a stator using a conventional conductor segment coil 1
  • FIG. 7B shows a schematic diagram of a stator using a collective conductor segment coil 30 'of this embodiment.
  • FIG. 7B by bending the conductor wire inward at the transition portion of the collective conductor segment coil 30 ′ of the present embodiment, the extension / thinning of the conductor wire outside the bend is reduced, and the circumferential length It is possible to construct a stator coil that improves the difference and does not interfere with each other.
  • FIG. 8 is a schematic diagram for explaining a 180 ° bent portion of the collective conductor segment coil of the present embodiment.
  • portions (thick line portions) 54, 55, 56, and 57 are fixed by an adhesive layer on the surface of the conductor wires.
  • the portions corresponding to the bent portions are not fixed, so that the conductor wires 51 and 52 on the inner side of the bending are formed. Can be bent symmetrically about the fixing pin 37.
  • a gap generated at the bent portion between the bent inner conductor wire 51 and the bent outer conductor wire 52 is t ′, and a bent portion between the bent inner conductor wire 52 and the bent outer conductor wire 53 is generated.
  • the gap is t
  • the relationship t ′> t is established. Even when the bending angle is increased in this way, by bending the inner conductor wire inside the bend, the elongation / thinning of the outer conductor wires 52 and 53 on the outer bend is reduced, and the circumferential length difference is improved. can do.
  • the conductor wire described above is shown as a quadrilateral cross-sectional shape, but the present invention is not limited to this.
  • the cross-sectional shape may be a circle, an ellipse, a triangle, a hexagon, or the like.
  • the rotating electric machine 200 is an example of a radial gap type rotating electric machine.
  • the number of poles, the number of core slots, and the number of conductor strands of the rotating electric machine can be changed as appropriate.
  • the rotating electrical machine can be changed as appropriate.
  • FIG. 9A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of this embodiment
  • FIG. 9B is a schematic diagram showing the collective conductor segment coil before bending.
  • the three-layer aggregated conductor composed of the conductor wires 61, 62, and 63 has portions 64, 65, 66, and 67 (thick line portions) fixed by the adhesive layer on the surface of the conductor wires.
  • the length of the non-fixed portion is different, and the length L2 of the non-fixed portion inside the bend is longer than the length L1 of the non-fixed portion outside the bend.
  • this three-layer assembly conductor is formed by bending the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the portion corresponding to the bending portion is made non-fixed so that the conductor wires 61, 62 can be bent.
  • the gap generated at the bending portion between the inner conductor wire 61 and the outer conductor wire 62 is t ′, and the bending portion between the inner conductor wire 62 and the outer conductor wire 63 is bent.
  • the gap is t, it is preferable to satisfy the relationship of t ′ ⁇ t.
  • FIG. 10A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment
  • FIG. 10B is a schematic diagram showing a state as viewed from the side.
  • portions (thick line portions) 74, 75, 76, and 77 are fixed by an adhesive layer on the surface of the conductor strand.
  • the conductor strands 71 and 72 can be shifted laterally by a length (maximum dimension w) corresponding to the circumferential length difference.
  • a length (maximum dimension w) corresponding to the circumferential length difference without bending the inner conductor wire inside the bend, the extension / thinning of the outer conductor wires 72 and 73 on the outer bend can be reduced, and the circumferential length difference can be improved.
  • a manufacturing method in which the conductor wires 71 and 72 on the inner side of the bend are shifted laterally by a length (maximum dimension w) corresponding to the circumferential length difference will be described.
  • FIG. 11A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment
  • FIG. 11B is a schematic diagram showing the state as viewed from the side.
  • the difference between FIG. 10 and FIG. 11 will be described.
  • the conductors 71 and 72 on the inner side of the bend are wound by pushing the wedge 78 by w while rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, and bending the wedge 78. It is possible to shift to the side by a length corresponding to the length difference (maximum dimension w).
  • FIG. 12A is a schematic view of a stator using the collective conductor segment coil 30 ′′ of this embodiment as viewed from the front.
  • 12A is a schematic view of a conventional stator coil
  • FIG. 12B is a schematic view of a stator coil according to this embodiment.
  • the conductor wires 81 and 82 on the inner side of the bend are only the length corresponding to the circumferential length difference (maximum dimension h) at the transition part of the collective conductor segment coil 30 ′′ of this embodiment.
  • the extension / thinning of the conductor wire outside the bend is reduced, the circumferential length difference is improved, and the stator coil can be configured without interfering with each other. .
  • FIG. 13A is a schematic diagram showing the structure of the collective conductor 110 of this example.
  • the collective conductor 110 will be described as an example in which three layers of rectangular conductors are stacked.
  • a thin and flat copper rectangular wire conductor (rectangular conductor) 111 has an insulating layer 112 covered with enamel or the like formed on its surface, and an adhesive layer 113 is formed on the insulating layer.
  • a thermoplastic resin, a thermosetting resin, or the like can be used for the adhesive layer.
  • a film 114 is a combination of the insulating layer 112 and the adhesive layer 113.
  • a conductor wire 115 is a combination of the conductor 111 and the film 114.
  • the fixing portions are portions indicated by 116 and 117.
  • the film 114 corresponding to the coil terminal portion is desired to be peeled off in advance.
  • this film peeling portion is A2, and a portion corresponding to the coil circumference is A1.
  • FIG. 13B is a schematic view showing a method for manufacturing the collective conductor 110 of this embodiment.
  • the coating stripping portion A2 can be formed in-line for each conductor strand. It becomes possible.
  • control is performed so that the film peeling portions A2 of the three conductor strands 115 coincide.
  • the coincidence of the film peeling portions A2 means that the portion A1 corresponding to the coil circumferential length also coincides, so that the fixing device (hot air machine, drying furnace) is pressed in a state where the assembly conductor 110 is pressed from the side by a roller or the like.
  • Reference numerals 122, 123, and 125 denote guide rollers, and reference numeral 126 denotes a winding bobbin.
  • FIG. 14A is a schematic diagram for explaining the collective conductor segment coil 30 ′′ of this embodiment
  • FIG. 14B is a schematic diagram showing the collective conductor before bending.
  • the stripped portions A2 and the portions A1 corresponding to the coil circumferential length are alternately formed in the aggregated conductor before molding. For this reason, a segment coil can be shape
  • the thick line portion B1 is fixed by the adhesive layer on the surface of the conductor strand.
  • B2 represents a non-fixed portion.
  • a hot air blower is suitable. This shape could be realized by optimizing the nozzle shape of the hot air blower. In addition to the nozzle shape, this shape can also be realized by temporarily inserting a shielding object into a portion corresponding to the non-fixed portion.
  • the fixing device 124 made of, for example, a hot air blower is controlled so that the hot air is temporarily supplied when a portion corresponding to the bending portion of the coil of the collective conductor 110 passes through the hot air blower. Just stop.
  • FIG. 15A is a schematic diagram for explaining the collective conductor segment coil 30 ′′ of this embodiment
  • FIG. 15B is a schematic diagram showing the collective conductor before bending.
  • the thick line portion C1 is fixed in a spot shape by the adhesive layer on the surface of the conductor element wire as a feature of the three-layer aggregated conductor composed of the conductor element wires 91, 92, and 93.
  • C2 represents a non-fixed portion.
  • a hot air blower is suitable as a method of partially forming the fixed portion and the non-fixed portion in the thick line portion C1.
  • the fixing portions are matched in the vertical direction, but the present invention is not limited to this, and the fixing length can be appropriately changed in the vertical direction, or the fixing portions can be arranged in a staggered manner. Is possible. By arranging the fixing portions in a spot shape in this way, it becomes possible to shorten the cycle time for manufacturing the collective conductor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Provided is a rotating electric machine stator in which the circumferential length difference between conducting wires occurring when an assembled conductor is bent in a laminated direction is improved regardless of a bending point and a bending angle to improve the characteristics. An assembled conductor segment coil is obtained in such a way that: an insulating layer is formed on the outer circumferential surfaces of a plurality of conducting wires; a bonding layer is formed so as to cover the insulating layer; and an assembled conductor obtained by firmly fixing the conducting wires to each other through the bonding layer is bent in a laminated direction and shaped. A stator is configured using the assembled conductor segment coil structured so that the conducting wires are separated from each other and deformed, by not firmly fixing the portion corresponding to a bending portion of the segment coil.

Description

回転電機、それに用いる集合導体および集合導体セグメントコイルの製造方法Rotating electrical machine, assembly conductor used therefor, and method of manufacturing assembly conductor segment coil
 本発明は、集合導体セグメントコイルを用いてステータを構成した回転電機、集合導体セグメントコイル用の集合導体および集合導体セグメントコイルの製造方法に関する。 The present invention relates to a rotating electrical machine in which a stator is formed using an aggregate conductor segment coil, an aggregate conductor for the aggregate conductor segment coil, and a method of manufacturing the aggregate conductor segment coil.
 回転電機のステータを構成する方法として、略U字形状に折り曲げたセグメントコイルを固定子コアに挿入して、セグメントコイルの端部を接続する方法がある。セグメントコイルとしては、コイルを構成する導体を複数の導体素線に分割し、導体素線間を絶縁層で絶縁することにより、渦電流損失を抑制することが知られている。また、集合導体を構成する複数の導体素線間でインピーダンスの相違が生じると、複数の素線の間に循環電流が発生する場合がある。 As a method of configuring a stator of a rotating electrical machine, there is a method in which a segment coil bent in a substantially U shape is inserted into a stator core and end portions of the segment coil are connected. As a segment coil, it is known to suppress eddy current loss by dividing a conductor constituting the coil into a plurality of conductor strands and insulating the conductor strands with an insulating layer. Moreover, when a difference in impedance occurs between a plurality of conductor strands constituting the assembly conductor, a circulating current may be generated between the plurality of strands.
 渦電流損失および循環電流の発生を考慮した背景技術として、特許文献1がある。この公報には、「複数の導体素線から構成される集合導体を曲げて導体セグメントとして用いる際に、複数の導体素線を捩じる転位部の位置の制約を緩和することである。導体セグメント20は、θ方向に並ぶ4個の導体素線32,34,36,38を有する集合導体で構成される略U字型の形状の導線である。導体セグメント20の渡り部26には、導体素線32,34,36,38の両端の間のインピーダンスの差を相殺するために、導体素線32,34,36,38の並列配置の順序を変更して捩じる転位部50が設けられる。この転位部50は、渡り部26の延伸方向に沿って、4つの位置a,b,c,dに分散して設けられる。この4つの位置a,b,c,dにおいて、導体素線32,34,36,38が順次平行配列の順序を変更する。」と記載されている(要約参照)。 [Patent Document 1] is a background art that takes into account the generation of eddy current loss and circulating current. In this publication, “when a collective conductor composed of a plurality of conductor strands is bent and used as a conductor segment, the restriction on the position of a dislocation portion twisting the plurality of conductor strands is relaxed. The segment 20 is a substantially U-shaped conductor composed of an aggregate conductor having four conductor strands 32, 34, 36, and 38 arranged in the θ direction. In order to cancel out the difference in impedance between both ends of the conductor strands 32, 34, 36, 38, a dislocation portion 50 that twists by changing the order of parallel arrangement of the conductor strands 32, 34, 36, 38 is provided. The dislocation portions 50 are provided in a distributed manner at four positions a, b, c, and d along the extending direction of the crossing portion 26. At these four positions a, b, c, and d, conductors are provided. The strands 32, 34, 36, and 38 change the order of the parallel arrangement sequentially. To. "Is described as (see Abstract).
特開2013-183567号公報JP 2013-183567 A
 特許文献1のセグメントコイルでは、渡り部において、集合導体を捩った場合に発生する導体素線間の周長差を改善し、特性の向上(各導体素線の両端の間のインピーダンスの差を相殺することで、導体素線間に発生する循環電流を抑止)を図ってはいるものの、すべての曲げ部に適用できるものではない。 In the segment coil of Patent Document 1, the circumferential length difference between the conductor strands that occurs when the assembly conductor is twisted is improved at the transition portion, and the characteristics are improved (impedance difference between both ends of each conductor strand). By canceling, the circulating current generated between the conductor wires is suppressed), but it is not applicable to all bent portions.
 本発明は、集合導体を積層方向に曲げた場合に発生する導体素線間の周長差を、曲げる箇所、曲げる角度に関係なく、改善し、特性の向上を図った回転電機のステータを提供することを目的とする。 The present invention provides a stator for a rotating electrical machine that improves the characteristics by improving the circumferential length difference between conductor wires generated when the assembly conductor is bent in the laminating direction, regardless of the location and angle of bending. The purpose is to do.
 上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。本願は上記課題を解決する手段を複数含んでいるが、本発明の回転電機の一例を挙げるならば、複数の導体素線の外周面に絶縁層を形成し、前記絶縁層を覆うように接着層を形成し、前記接着層を介して互いに固着した集合導体を積層方向に曲げ成形した集合導体セグメントコイルであって、前記セグメントコイルの曲げ部に相当する部分を非固着とすることで、各導体素線が互いに分離、変形するように構成した集合導体セグメントコイルを用いてステータを構成したものである。 In order to solve the above problems, for example, the configuration described in the claims is adopted. Although the present application includes a plurality of means for solving the above-described problems, if an example of the rotating electrical machine of the present invention is given, an insulating layer is formed on the outer peripheral surface of the plurality of conductor strands and bonded so as to cover the insulating layer. Forming an assembly conductor segment coil formed by bending the assembly conductors fixed to each other via the adhesive layer in the laminating direction, the portions corresponding to the bent portions of the segment coils being non-adhered, The stator is configured by using a collective conductor segment coil configured such that conductor strands are separated from each other and deformed.
 本発明の集合導体セグメントコイル用の集合導体の製造方法の一例を挙げるならば、外周面に絶縁層および接着層を形成した導体素線から、前記絶縁層と前記接着層を長手方向に所定の間隔で所定長除去する工程と、前記絶縁層と前記接着層を除去した部分が重なるように、複数本の前記導体素線を積層して集合導体を形成する工程と、前記集合導体を側方から押圧して加熱することにより前記集合導体を、前記接着層を介して固着させる工程と、前記絶縁層と前記接着層を除去した部分で前記集合導体を切断する行程とを備えるものである。 If an example of the manufacturing method of the assembly conductor for the assembly conductor segment coils of this invention is given, from the conductor strand which formed the insulating layer and the contact bonding layer in the outer peripheral surface, the said insulation layer and the said contact bonding layer will be predetermined in the longitudinal direction. A step of removing a predetermined length at intervals, a step of stacking a plurality of the conductor wires so that a portion from which the insulating layer and the adhesive layer have been removed overlap, and forming the aggregate conductor laterally The assembly conductor includes a step of fixing the assembly conductor via the adhesive layer by pressing and heating, and a step of cutting the assembly conductor at a portion where the insulating layer and the adhesive layer are removed.
 また、本発明の回転電機のステータに用いる集合導体セグメントコイルの製造方法の一例を挙げるならば、複数の導体素線の外周面に絶縁層を形成し、前記絶縁層を覆うように接着層を形成し、前記接着層を介して互いに固着した集合導体において、コイルの曲げ部に相当する部分を非固着とすることで、前記各導体素線が互いに分離、変形するように構成し、前記集合導体を前記曲げ部で積層方向に折り曲げるものである。 Moreover, if an example of the manufacturing method of the assembly conductor segment coil used for the stator of the rotary electric machine of the present invention is given, an insulating layer is formed on the outer peripheral surface of a plurality of conductor strands, and an adhesive layer is formed so as to cover the insulating layer. In the assembly conductor formed and fixed to each other through the adhesive layer, the portions corresponding to the bending portions of the coil are made non-fixed so that the conductor wires are separated from each other and deformed, and the assembly The conductor is bent in the stacking direction at the bent portion.
 本発明によれば、集合導体セグメントコイルを用いた回転電機のステータにおいて、集合導体を積層方向に曲げた場合に発生する導体素線間の周長差を、曲げる箇所、曲げる角度に関係なく、改善し、特性の向上を図ることができる。 According to the present invention, in the stator of the rotating electrical machine using the collective conductor segment coil, the circumferential length difference between the conductor wires generated when the collective conductor is bent in the laminating direction, regardless of the bending location and the bending angle, It is possible to improve and improve the characteristics.
従来の回転電機の概略図である。It is the schematic of the conventional rotary electric machine. 従来の回転電機のステータを構成する導体セグメントコイルの概略図である。It is the schematic of the conductor segment coil which comprises the stator of the conventional rotary electric machine. 従来の回転電機のステータの構造を説明する概略図である。It is the schematic explaining the structure of the stator of the conventional rotary electric machine. 本発明の実施例1の回転電機のステータを構成する集合導体セグメントコイルを説明する概略図である。It is the schematic explaining the collective conductor segment coil which comprises the stator of the rotary electric machine of Example 1 of this invention. 集合導体を積層方向に90°曲げた場合に発生する導体素線間の周長差を説明する概略図である。It is the schematic explaining the circumference difference between the conductor strands which generate | occur | produce when an assembly conductor is bent 90 degrees in the lamination direction. 本発明の実施例1の集合導体セグメントコイルの90°曲げ部を説明する概略図である。It is the schematic explaining the 90 degree bending part of the collective conductor segment coil of Example 1 of this invention. 従来の導体セグメントコイルを用いたステータを正面から見た概略図である。It is the schematic which looked at the stator using the conventional conductor segment coil from the front. 本発明の実施例1の集合導体セグメントコイルを用いたステータを正面から見た概略図である。It is the schematic which looked at the stator using the collective conductor segment coil of Example 1 of this invention from the front. 本発明の実施例1の集合導体セグメントコイルの180°曲げ部を説明する概略図である。It is the schematic explaining the 180 degrees bending part of the collective conductor segment coil of Example 1 of this invention. 本発明の実施例2の集合導体セグメントコイルの90°曲げ部を説明する概略図である。It is the schematic explaining the 90 degree bending part of the assembly conductor segment coil of Example 2 of this invention. 本発明の実施例2の曲げ成形前の集合導体セグメントコイルを説明する概略図である。It is the schematic explaining the assembly conductor segment coil before the bending shaping | molding of Example 2 of this invention. 本発明の実施例3の集合導体セグメントコイルの90°曲げ部を説明する概略図である。It is the schematic explaining the 90 degree bending part of the collective conductor segment coil of Example 3 of this invention. 本発明の実施例3の集合導体セグメントコイルの90°曲げ部を側面から見た概略図である。It is the schematic which looked at the 90 degree bending part of the collective conductor segment coil of Example 3 of this invention from the side surface. 本発明の実施例4の集合導体セグメントコイルの製造方法を説明する概略図である。It is the schematic explaining the manufacturing method of the assembly conductor segment coil of Example 4 of this invention. 本発明の実施例4の集合導体セグメントコイルの製造方法を説明する概略図である。It is the schematic explaining the manufacturing method of the assembly conductor segment coil of Example 4 of this invention. 本発明の実施例3の集合導体セグメントコイルを用いたステータを正面から見た概略図である。It is the schematic which looked at the stator using the collective conductor segment coil of Example 3 of this invention from the front. 従来と本発明の実施例3のステータコイルの概略図である。It is the schematic of the stator coil of the prior art and Example 3 of this invention. 本発明の実施例5の集合導体の構造を説明する概略図である。It is the schematic explaining the structure of the collective conductor of Example 5 of this invention. 本発明の実施例5の集合導体の製造方法を説明する概略図である。It is the schematic explaining the manufacturing method of the assembly conductor of Example 5 of this invention. 本発明の実施例6の集合導体セグメントコイルを説明する概略図である。It is the schematic explaining the collective conductor segment coil of Example 6 of this invention. 本発明の実施例6の曲げ成形前の集合導体セグメントコイルを説明する概略図である。It is the schematic explaining the assembly conductor segment coil before the bending shaping | molding of Example 6 of this invention. 本発明の実施例7の集合導体セグメントコイルを説明する概略図である。It is the schematic explaining the assembly conductor segment coil of Example 7 of this invention. 本発明の実施例7の曲げ成形前の集合導体セグメントコイルを説明する概略図である。It is the schematic explaining the assembly conductor segment coil before the bending shaping | molding of Example 7 of this invention.
 以下、図面に基づいて本発明の実施の形態を説明する。なお、実施の形態を説明するための各図において、同一の機能を有する要素には同一の名称、符号を付して、その繰り返しの説明を省略する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that components having the same function are denoted by the same names and reference numerals in the drawings for describing the embodiments, and repetitive description thereof is omitted.
 本実施例では、集合導体セグメントコイルを用いた回転電機のステータにおいて、集合導体を積層方向に曲げた場合に発生する導体素線間の周長差を、曲げる箇所、曲げる角度に関係なく、改善し、特性を向上させている。 In this example, in the stator of a rotating electrical machine using an assembly conductor segment coil, the circumferential length difference between the conductor wires generated when the assembly conductor is bent in the laminating direction is improved regardless of the bending location and the bending angle. And the characteristics are improved.
 図1は、従来の回転電機の概略図である。従来の回転電機200では、例えば、ケイ素鋼板を積層して形成した円環状のコア2に、エナメル等で絶縁被覆された銅の平角線の導体(矩形導体)からなるU字型の導体セグメントコイル1をコア2に挿入してステータコイル10を形成する。また、ステータコイル10において、口出し線5がU相、V相、W相の3相分配置され、電気回路としてステータ100が構成される。また、従来のステータ100はハウジング3に外周を固定されており、図示していないが、回転電機200の中心には、複数のマグネットをN極とS極が周方向に交互に配置したロータが、ステータ100と一定の空隙(ギャップ)を介して回転可能に支持されている。 FIG. 1 is a schematic view of a conventional rotating electrical machine. In the conventional rotating electric machine 200, for example, a U-shaped conductor segment coil made of a copper rectangular wire conductor (rectangular conductor) coated with an enamel or the like on an annular core 2 formed by laminating silicon steel plates. 1 is inserted into the core 2 to form the stator coil 10. Further, in the stator coil 10, lead wires 5 are arranged for three phases of U phase, V phase, and W phase, and the stator 100 is configured as an electric circuit. Further, the outer periphery of the conventional stator 100 is fixed to the housing 3, and although not shown, a rotor in which a plurality of magnets are alternately arranged in the circumferential direction with N poles and S poles in the center of the rotating electrical machine 200. The stator 100 and the stator 100 are rotatably supported through a certain gap (gap).
 図2は、従来のステータ100を構成する導体セグメントコイル1の概略図である。図2(a)、(b)、(c)はそれぞれ、導体セグメントコイル1の斜視図、側面図、正面図である。導体セグメントコイル1は、エナメル等で絶縁被覆された銅の平角線の導体(矩形導体)をU字型に成形して形成される。U字の折り返しを以下、渡り部として説明する。また、導体セグメントコイル1の2箇所の端末部11,12は、隣接する別の導体セグメントコイルと接続するために、絶縁層が予め4面とも除去された構造となっている。 FIG. 2 is a schematic view of a conductor segment coil 1 constituting the conventional stator 100. 2A, 2B, and 2C are a perspective view, a side view, and a front view of the conductor segment coil 1, respectively. The conductor segment coil 1 is formed by forming a copper rectangular wire conductor (rectangular conductor), which is insulation-coated with enamel or the like, into a U-shape. Hereinafter, the folding of the U character will be described as a transition part. Further, the two terminal portions 11 and 12 of the conductor segment coil 1 have a structure in which all four insulating layers have been removed in advance in order to connect to other adjacent conductor segment coils.
 図3は、従来のステータ構造を説明する概略図である。図3(a)は、導体セグメントコイル1を側面から見たものである。図3(b)に示す通り、導体セグメントコイル1の端部15を、コア2のスロット部に挿入し、端部15を再度、成形して、隣接する別の導体セグメントコイルと接続して、電気回路が形成される。接続はTIG溶接などで実施され、接続部4はステータの片側に集中する構造となる。ここでは一例として、図3(c)に示す通り、コア2のスロットに導体セグメントコイル1を4本挿入する構造で図示した。 FIG. 3 is a schematic diagram illustrating a conventional stator structure. FIG. 3A shows the conductor segment coil 1 as viewed from the side. As shown in FIG. 3 (b), the end portion 15 of the conductor segment coil 1 is inserted into the slot portion of the core 2, the end portion 15 is molded again, and connected to another adjacent conductor segment coil, An electrical circuit is formed. The connection is performed by TIG welding or the like, and the connection portion 4 has a structure concentrated on one side of the stator. Here, as an example, as shown in FIG. 3C, a structure in which four conductor segment coils 1 are inserted into the slots of the core 2 is illustrated.
 図4は、本実施例の集合導体セグメントコイルを説明する概略図である。図4(a)、(b)、(c)はそれぞれ、集合導体セグメントコイル30の斜視図、側面図、正面図である。集合導体セグメントコイルは、一例として、エナメル等で絶縁被覆された、薄く扁平な銅の平角線の導体(矩形導体)を3層積層して構成する。集合導体の製造方法は後述するが、矩形導体の最表面に接着層が形成されており、この接着層により、3層の導体が固着された構造である。このため、集合導体をU字型に成形しても、各導体素線21、22、23は分離することが無く、コアに挿入することが可能となる。また、集合導体セグメントコイル30の2箇所の端末部24、25、26、27、28,29は、隣接する別の導体セグメントコイルと接続するために、各導体素線毎に絶縁層が予め4面とも除去された構造となっている。絶縁層の剥離方法については、後述する。図4は本実施例の集合導体セグメントコイル30のイメージ図であり、実際には集合導体を積層方向に曲げた場合、具体的には図4の渡り部において、導体素線間に周長差が発生する。次に、この周長差が発生するメカニズムについて説明する。 FIG. 4 is a schematic diagram for explaining the collective conductor segment coil of the present embodiment. 4A, 4B, and 4C are a perspective view, a side view, and a front view of the collective conductor segment coil 30, respectively. As an example, the collective conductor segment coil is formed by stacking three layers of thin and flat copper rectangular wire conductors (rectangular conductors) that are insulated and coated with enamel or the like. Although the method for manufacturing the collective conductor will be described later, an adhesive layer is formed on the outermost surface of the rectangular conductor, and three layers of conductors are fixed by this adhesive layer. For this reason, even if the collective conductor is formed into a U-shape, the conductor wires 21, 22, and 23 are not separated and can be inserted into the core. Further, in order to connect the two terminal portions 24, 25, 26, 27, 28, and 29 of the collective conductor segment coil 30 to other adjacent conductor segment coils, an insulating layer is provided in advance for each conductor strand. Both surfaces are removed. A method for peeling the insulating layer will be described later. FIG. 4 is an image diagram of the collective conductor segment coil 30 of this embodiment. Actually, when the collective conductor is bent in the stacking direction, specifically, there is a difference in circumference between the conductor strands in the crossing portion of FIG. appear. Next, a mechanism for generating this circumference difference will be described.
 図5は、集合導体を積層方向に90°曲げた場合に発生する導体素線間の周長差を説明する概略図である。導体素線31、32、33からなる3層の集合導体を、固定ピン37を支点として、曲げピン38を90°回転して曲げ成形した場合、曲げ内側の導体素線31に対し、曲げ外側の導体素線32、33が伸びて、減肉した場合を仮定すると、導体素線の90°分の周長34、35、36は、その順で長くなることが判る。このため、集合導体セグメントコイル30の端部を接続して、電気回路を構成した場合、各導体素線の周長が異なることから、インピーダンスに差が生じて、複数の導体素線の間に循環電流が発生することがある。本実施例は、曲げ外側の導体素線32、33の伸び・減肉を低減し、周長差を改善するものである。 FIG. 5 is a schematic diagram for explaining the circumferential length difference between the conductor wires that occurs when the assembly conductor is bent 90 ° in the stacking direction. When a three-layer assembly conductor composed of the conductor wires 31, 32, 33 is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the outer conductor is bent with respect to the conductor wire 31 on the inner side of the bend. Assuming that the conductor strands 32 and 33 are thinned and thinned, it can be seen that the circumferential lengths 34, 35 and 36 corresponding to 90 ° of the conductor strands become longer in that order. For this reason, when the end portions of the collective conductor segment coil 30 are connected to form an electric circuit, the circumferential length of each conductor strand is different, so that a difference in impedance occurs between the plurality of conductor strands. Circulating current may occur. In the present embodiment, the extension / thinning of the conductor wires 32 and 33 outside the bend is reduced, and the difference in circumference is improved.
 図6は、本実施例の集合導体セグメントコイルの90°曲げ部を説明する概略図である。導体素線41、42、43からなる3層の集合導体は、導体素線の表面の接着層により、44、45、46、47の箇所(太線部)が固着されている。固着方法については後述する。3層の集合導体を、固定ピン37を支点として、曲げピン38を90°回転して曲げ成形した場合、曲げ部に相当する部分を非固着とすることで曲げ内側の導体素線41,42をたわませることが可能となる。このとき、曲げ内側の導体素線41と曲げ外側の導体素線42とのたわみ部で生じる隙間をt’、 曲げ内側の導体素線42と曲げ外側の導体素線43とのたわみ部で生じる隙間をtとすると、t’> tの関係が成立する。このように曲げ内側の導体素線を内側にたわませることで、曲げ外側の導体素線42、43の伸び・減肉を低減し、周長差を改善することができる。 FIG. 6 is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment. In the three-layer aggregated conductor composed of the conductor wires 41, 42, and 43, portions (thick line portions) 44, 45, 46, and 47 are fixed by an adhesive layer on the surface of the conductor wires. The fixing method will be described later. When the three-layer aggregate conductor is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the conductor wires 41 and 42 on the inner side of the bending are made non-fixed by making the portion corresponding to the bending portion non-fixed. Can be bent. At this time, a gap generated at the bent portion between the conductor wire 41 inside the bend and the conductor wire 42 outside the bend is t ′, and at the bend portion between the conductor wire 42 inside the bend and the conductor wire 43 outside the bend. When the gap is t, the relationship t ′> t is established. By bending the inner conductor wire in the bending direction in this way, the elongation / thinning of the outer conductor wires 42 and 43 on the outer bending side can be reduced, and the circumference difference can be improved.
 図7Aおよび図7Bは、導体セグメントコイルを用いたステータを正面から見た概略図である。図7Aは従来の導体セグメントコイル1を用いたステータの概略図を示し、図7Bは本実施例の集合導体セグメントコイル30’を用いたステータの概略図を示す。図7Bに示す通り、本実施例の集合導体セグメントコイル30’の渡り部において、導体素線を内側にたわませることで、曲げ外側の導体素線の伸び・減肉を低減し、周長差を改善しており、かつコイル相互で干渉することもなくステータコイルを構成することが可能である。 7A and 7B are schematic views of a stator using a conductor segment coil as viewed from the front. FIG. 7A shows a schematic diagram of a stator using a conventional conductor segment coil 1, and FIG. 7B shows a schematic diagram of a stator using a collective conductor segment coil 30 'of this embodiment. As shown in FIG. 7B, by bending the conductor wire inward at the transition portion of the collective conductor segment coil 30 ′ of the present embodiment, the extension / thinning of the conductor wire outside the bend is reduced, and the circumferential length It is possible to construct a stator coil that improves the difference and does not interfere with each other.
 図8は、本実施例の集合導体セグメントコイルの180°曲げ部を説明する概略図である。導体素線51、52、53からなる3層の集合導体は、導体素線の表面の接着層により、54、55、56、57の箇所(太線部)が固着されている。3層の集合導体を、固定ピン37を支点として、曲げピン38を180°回転して曲げ成形した場合、曲げ部に相当する部分を非固着とすることで曲げ内側の導体素線51,52を固定ピン37を中心にして、左右対称にたわませることが可能となる。このとき、曲げ内側の導体素線51と曲げ外側の導体素線52とのたわみ部で生じる隙間をt’、 曲げ内側の導体素線52と曲げ外側の導体素線53とのたわみ部で生じる隙間をtとすると、t’> tの関係が成立する。このように曲げ角度を大きくした場合においても、曲げ内側の導体素線を内側にたわませることで、曲げ外側の導体素線52、53の伸び・減肉を低減し、周長差を改善することができる。 FIG. 8 is a schematic diagram for explaining a 180 ° bent portion of the collective conductor segment coil of the present embodiment. In the three-layer aggregated conductor composed of the conductor wires 51, 52, and 53, portions (thick line portions) 54, 55, 56, and 57 are fixed by an adhesive layer on the surface of the conductor wires. When the three-layer aggregated conductor is bent by rotating the bending pin 38 by 180 ° with the fixing pin 37 as a fulcrum, the portions corresponding to the bent portions are not fixed, so that the conductor wires 51 and 52 on the inner side of the bending are formed. Can be bent symmetrically about the fixing pin 37. At this time, a gap generated at the bent portion between the bent inner conductor wire 51 and the bent outer conductor wire 52 is t ′, and a bent portion between the bent inner conductor wire 52 and the bent outer conductor wire 53 is generated. When the gap is t, the relationship t ′> t is established. Even when the bending angle is increased in this way, by bending the inner conductor wire inside the bend, the elongation / thinning of the outer conductor wires 52 and 53 on the outer bend is reduced, and the circumferential length difference is improved. can do.
 上述した導体素線は、図から明らかなように、その断面形状を四角形として示されているが、本発明はこれに限定されることなく、例えば断面形状を円、楕円、三角形、六角形等に適宜変更可能である。また、回転電機200はラジアルギャップ型回転電機の一例であって、回転電機の極数、コアスロット数、導体素線数は、適宜、変更可能であることはもちろんであり、また、アキシャルギャップ型回転電機にも適宜変更可能である。 As is clear from the drawing, the conductor wire described above is shown as a quadrilateral cross-sectional shape, but the present invention is not limited to this. For example, the cross-sectional shape may be a circle, an ellipse, a triangle, a hexagon, or the like. Can be appropriately changed. The rotating electric machine 200 is an example of a radial gap type rotating electric machine. Of course, the number of poles, the number of core slots, and the number of conductor strands of the rotating electric machine can be changed as appropriate. The rotating electrical machine can be changed as appropriate.
 本実施例では、別の回転電機のステータを構成する集合導体セグメントコイルの構造について説明する。 In the present embodiment, the structure of the collective conductor segment coil constituting the stator of another rotating electrical machine will be described.
 図9Aは本実施例の集合導体セグメントコイルの90°曲げ部を説明する概略図であり、図9Bは曲げ成形前の集合導体セグメントコイルを示す概略図である。図9Bに示す通り、導体素線61、62、63からなる3層の集合導体は、導体素線の表面の接着層により、64、65、66、67の箇所(太線部)が固着されている。本実施例の特徴として、非固着部の長さが異なり、曲げ内側の非固着部の長さL2が曲げ外側の非固着部の長さL1より長いことである。この3層の集合導体を、固定ピン37を支点として、曲げピン38を90°回転して曲げ成形した場合、曲げ部に相当する部分を非固着とすることで曲げ内側の導体素線61,62をたわませることが可能となる。このとき、曲げ内側の導体素線61と曲げ外側の導体素線62とのたわみ部で生じる隙間をt’、 曲げ内側の導体素線62と曲げ外側の導体素線63とのたわみ部で生じる隙間をtとするとき、t’< tの関係が成立ようにするのが好ましい。t’<tの関係が成立するのは、非固着部の長さがL1、L2と異なるようにしたため、曲げ内側の導体素線61のたわみ量が、導体素線62のたわみ量よりも小さくなったためである。このため、曲げ外側の導体素線62、63の伸び・減肉を低減し、周長差を改善しつつ、曲げ内側の導体素線61のたわみを抑制することができる。 FIG. 9A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of this embodiment, and FIG. 9B is a schematic diagram showing the collective conductor segment coil before bending. As shown in FIG. 9B, the three-layer aggregated conductor composed of the conductor wires 61, 62, and 63 has portions 64, 65, 66, and 67 (thick line portions) fixed by the adhesive layer on the surface of the conductor wires. Yes. As a feature of the present embodiment, the length of the non-fixed portion is different, and the length L2 of the non-fixed portion inside the bend is longer than the length L1 of the non-fixed portion outside the bend. When this three-layer assembly conductor is formed by bending the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the portion corresponding to the bending portion is made non-fixed so that the conductor wires 61, 62 can be bent. At this time, the gap generated at the bending portion between the inner conductor wire 61 and the outer conductor wire 62 is t ′, and the bending portion between the inner conductor wire 62 and the outer conductor wire 63 is bent. When the gap is t, it is preferable to satisfy the relationship of t ′ <t. The relationship of t ′ <t is established because the length of the non-fixed portion is different from L1 and L2, so that the bending amount of the conductor wire 61 inside the bend is smaller than the bending amount of the conductor wire 62. It is because it became. For this reason, the bending and thinning of the conductor wires 62 and 63 on the outer side of the bend can be reduced, and the deflection of the conductor wire 61 on the inner side of the bend can be suppressed while improving the circumferential length difference.
 本実施例では、別の回転電機のステータを構成する集合導体セグメントコイルの構造について説明する。図10Aは本実施例の集合導体セグメントコイルの90°曲げ部を説明する概略図であり、図10Bはそれを側面から見た状態を示す概略図である。導体素線71、72、73からなる3層の集合導体は、導体素線の表面の接着層により、74、75、76、77の箇所(太線部)が固着されている。3層の集合導体を、固定ピン37を支点として、曲げピン38を90°回転して曲げ成形した場合、曲げ部に相当する部分を非固着とすることで、図10Bに示す通り、曲げ内側の導体素線71、72を周長差に相当する長さ(最大寸法w)だけ側方にずらすことができる。このようにすれば、曲げ内側の導体素線を内側にたわませることもなく、曲げ外側の導体素線72、73の伸び・減肉を低減し、周長差を改善することができる。ここで、曲げ内側の導体素線71、72を周長差に相当する長さ(最大寸法w)だけ側方にずらす製造方法について、次に説明する。 In the present embodiment, the structure of the collective conductor segment coil constituting the stator of another rotating electrical machine will be described. FIG. 10A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment, and FIG. 10B is a schematic diagram showing a state as viewed from the side. In the three-layer collective conductor composed of the conductor strands 71, 72, and 73, portions (thick line portions) 74, 75, 76, and 77 are fixed by an adhesive layer on the surface of the conductor strand. When the three-layer aggregate conductor is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the portion corresponding to the bending portion is made non-fixed, as shown in FIG. The conductor strands 71 and 72 can be shifted laterally by a length (maximum dimension w) corresponding to the circumferential length difference. In this way, without bending the inner conductor wire inside the bend, the extension / thinning of the outer conductor wires 72 and 73 on the outer bend can be reduced, and the circumferential length difference can be improved. Here, a manufacturing method in which the conductor wires 71 and 72 on the inner side of the bend are shifted laterally by a length (maximum dimension w) corresponding to the circumferential length difference will be described.
 本実施例では、集合導体セグメントコイルの製造方法について説明する。図11Aは本実施例の集合導体セグメントコイルの90°曲げ部を説明する概略図であり、図11Bはそれを側面から見た状態を示す概略図である。図10と図11の違いについて述べる。3層の集合導体を、固定ピン37を支点として、曲げピン38を90°回転して曲げ成形を実施しながら、くさび78をwだけ押し込むことにより、曲げ内側の導体素線71、72を周長差に相当する長さ(最大寸法w)だけ側方にずらすことが可能となる。 In the present embodiment, a method for manufacturing a collective conductor segment coil will be described. FIG. 11A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment, and FIG. 11B is a schematic diagram showing the state as viewed from the side. The difference between FIG. 10 and FIG. 11 will be described. The conductors 71 and 72 on the inner side of the bend are wound by pushing the wedge 78 by w while rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, and bending the wedge 78. It is possible to shift to the side by a length corresponding to the length difference (maximum dimension w).
 図12Aは本実施例の集合導体セグメントコイル30’’を用いたステータを正面から見た概略図である。図12Bの(a)は従来の、(b)は本実施例のステータコイルの概略図をそれぞれ示す。 FIG. 12A is a schematic view of a stator using the collective conductor segment coil 30 ″ of this embodiment as viewed from the front. 12A is a schematic view of a conventional stator coil, and FIG. 12B is a schematic view of a stator coil according to this embodiment.
 図12Bの(b)に示す通り、本実施例の集合導体セグメントコイル30’’の渡り部において、曲げ内側の導体素線81、82を周長差に相当する長さ(最大寸法h)だけ軸方向にずらすことにより、曲げ外側の導体素線の伸び・減肉を低減し、周長差を改善しており、かつコイル相互で干渉することもなくステータコイルを構成することが可能である。 As shown in (b) of FIG. 12B, the conductor wires 81 and 82 on the inner side of the bend are only the length corresponding to the circumferential length difference (maximum dimension h) at the transition part of the collective conductor segment coil 30 ″ of this embodiment. By shifting in the axial direction, the extension / thinning of the conductor wire outside the bend is reduced, the circumferential length difference is improved, and the stator coil can be configured without interfering with each other. .
 本実施例では、集合導体の構造及びその製造方法について説明する。 In the present embodiment, the structure of the assembly conductor and the manufacturing method thereof will be described.
 図13Aは、本実施例の集合導体110の構造を示す概略図である。集合導体110は、一例として、矩形導体を3層積層して構成したもので説明する。薄く扁平な銅の平角線の導体(矩形導体)111は、その表面にエナメル等で絶縁被覆された絶縁層112を形成し、その絶縁層の上に接着層113が形成されている。接着層には、熱可塑性樹脂、熱硬化性樹脂などを用いることができる。絶縁層112と接着層113を合わせたものが皮膜114である。導体111と皮膜114を合わせたものが、導体素線115である。導体素線115を3層積層する場合、素線最表面の接着層113で相互に固着する構造が考えられる。図13Aに示す通り、固着部は116、117に示す箇所である。また、集合導体を成形して、例えばセグメントコイルを作成する場合、最終的にはコイル端末同士を接続して、電気回路を構成する必要がある。このため、コイル端末部に相当する部分の皮膜114は予め剥離をしておきたい。ここで、この皮膜剥離部をA2、コイル周長に相当する部分をA1とする。 FIG. 13A is a schematic diagram showing the structure of the collective conductor 110 of this example. The collective conductor 110 will be described as an example in which three layers of rectangular conductors are stacked. A thin and flat copper rectangular wire conductor (rectangular conductor) 111 has an insulating layer 112 covered with enamel or the like formed on its surface, and an adhesive layer 113 is formed on the insulating layer. For the adhesive layer, a thermoplastic resin, a thermosetting resin, or the like can be used. A film 114 is a combination of the insulating layer 112 and the adhesive layer 113. A conductor wire 115 is a combination of the conductor 111 and the film 114. When three layers of conductor strands 115 are laminated, a structure in which the adhesive layers 113 on the outermost surface of the strands are fixed to each other can be considered. As shown in FIG. 13A, the fixing portions are portions indicated by 116 and 117. Moreover, when forming a collective conductor and producing a segment coil, for example, it is finally necessary to connect coil terminals to form an electric circuit. For this reason, the film 114 corresponding to the coil terminal portion is desired to be peeled off in advance. Here, this film peeling portion is A2, and a portion corresponding to the coil circumference is A1.
 図13Bは本実施例の集合導体110を製造する方法を示す概略図である。導体素線115を巻回したボビン120を3個備え、皮膜剥離装置(型剥離、レーザなど)121も3台備えることで、各導体素線毎に皮膜剥離部A2をインラインで形成することが可能となる。皮膜剥離部A2を形成後、3本の導体素線115の皮膜剥離部A2が一致するように制御する。皮膜剥離部A2が一致するということは、すなわちコイル周長に相当する部分A1も一致しているため、集合導体110をローラ等で側方から押圧した状態で、固着装置(熱風機、乾燥炉など)124を通過することで、接着層113同士が固着し、集合導体110が形成される。なお、符号122,123,125はガイドローラを、符号126は巻取りボビンを示す。 FIG. 13B is a schematic view showing a method for manufacturing the collective conductor 110 of this embodiment. By providing three bobbins 120 around which the conductor strands 115 are wound and also having three coating stripping apparatuses (mold stripping, laser, etc.) 121, the coating stripping portion A2 can be formed in-line for each conductor strand. It becomes possible. After forming the film peeling portion A2, control is performed so that the film peeling portions A2 of the three conductor strands 115 coincide. The coincidence of the film peeling portions A2 means that the portion A1 corresponding to the coil circumferential length also coincides, so that the fixing device (hot air machine, drying furnace) is pressed in a state where the assembly conductor 110 is pressed from the side by a roller or the like. Etc.) 124, the adhesive layers 113 are fixed to each other, and the aggregate conductor 110 is formed. Reference numerals 122, 123, and 125 denote guide rollers, and reference numeral 126 denotes a winding bobbin.
 本実施例では、実施例3の回転電機のステータを構成する集合導体セグメントコイル30’’を一例にして、集合導体セグメントコイルの構造について説明する。図14Aは本実施例の集合導体セグメントコイル30’’を説明する概略図であり、図14Bは曲げ成形前の集合導体を示す概略図である。図14Bに示す通り、成形前の集合導体では皮膜剥離部A2とコイル周長に相当する部分A1が交互に形成される。このため、皮膜剥離部A2の中心で切断した集合導体を用いて、セグメントコイルを成形することができる。ここで、導体素線81、82、83からなる3層の集合導体の特徴として、導体素線の表面の接着層により、太線部B1が固着されている。B2は非固着部を示す。このように部分的に固着部と非固着部を形成する方法としては、熱風機が適している。熱風機のノズル形状を適正化することで、この形状を実現できた。また、ノズル形状だけではなく、非固着部に相当する部分に遮蔽物を一時的に挿入することでも本形状を実現できる。また、図13Bに示される製造装置において、例えば熱風機から成る固着装置124を制御して、集合導体110のコイルの曲げ部に相当する部分が熱風機を通過する際に、熱風の供給を一時的に停止すればよい。 In this embodiment, the structure of the collective conductor segment coil will be described by taking the collective conductor segment coil 30 ″ constituting the stator of the rotating electrical machine of the third embodiment as an example. FIG. 14A is a schematic diagram for explaining the collective conductor segment coil 30 ″ of this embodiment, and FIG. 14B is a schematic diagram showing the collective conductor before bending. As shown in FIG. 14B, the stripped portions A2 and the portions A1 corresponding to the coil circumferential length are alternately formed in the aggregated conductor before molding. For this reason, a segment coil can be shape | molded using the collective conductor cut | disconnected in the center of film peeling part A2. Here, as a feature of the three-layer collective conductor composed of the conductor strands 81, 82, and 83, the thick line portion B1 is fixed by the adhesive layer on the surface of the conductor strand. B2 represents a non-fixed portion. As a method of partially forming the fixed part and the non-fixed part in this way, a hot air blower is suitable. This shape could be realized by optimizing the nozzle shape of the hot air blower. In addition to the nozzle shape, this shape can also be realized by temporarily inserting a shielding object into a portion corresponding to the non-fixed portion. In the manufacturing apparatus shown in FIG. 13B, the fixing device 124 made of, for example, a hot air blower is controlled so that the hot air is temporarily supplied when a portion corresponding to the bending portion of the coil of the collective conductor 110 passes through the hot air blower. Just stop.
 本実施例では、実施例3の集合導体セグメントコイル30’’を一例にして、別の集合導体セグメントコイルの構造について説明する。図15Aは本実施例の集合導体セグメントコイル30’’を説明する概略図であり、図15Bは曲げ成形前の集合導体を示す概略図である。図15Bに示す通り、導体素線91、92、93からなる3層の集合導体の特徴として、導体素線の表面の接着層により、太線部C1がスポット状に固着されている。C2は非固着部を示す。太線部C1において、部分的に固着部と非固着部を形成する方法としては、上記の通り、熱風機が適している。この図から明らかなように、固着部分は上下で一致させているが、本発明はこれに限定されることなく、上下で固着長さを適宜変更したり、固着部を千鳥に配置することも可能である。このように固着部をスポット状に配置することで、集合導体製造のサイクルタイムを短縮することが可能となる。 In the present embodiment, the structure of another collective conductor segment coil will be described using the collective conductor segment coil 30 '' of the third embodiment as an example. FIG. 15A is a schematic diagram for explaining the collective conductor segment coil 30 ″ of this embodiment, and FIG. 15B is a schematic diagram showing the collective conductor before bending. As shown in FIG. 15B, the thick line portion C1 is fixed in a spot shape by the adhesive layer on the surface of the conductor element wire as a feature of the three-layer aggregated conductor composed of the conductor element wires 91, 92, and 93. C2 represents a non-fixed portion. As described above, a hot air blower is suitable as a method of partially forming the fixed portion and the non-fixed portion in the thick line portion C1. As is clear from this figure, the fixing portions are matched in the vertical direction, but the present invention is not limited to this, and the fixing length can be appropriately changed in the vertical direction, or the fixing portions can be arranged in a staggered manner. Is possible. By arranging the fixing portions in a spot shape in this way, it becomes possible to shorten the cycle time for manufacturing the collective conductor.
1 導体セグメントコイル
2 コア
3 ハウジング
4 接続部
5 口出し線
10 ステータコイル
11,12 端末部
15 端部
21,22,23 導体素線
30 集合導体セグメントコイル
31,32,33 導体素線
37 固定ピン
38 曲げピン
41,42,43 導体素線
44,45,46,47 固着部
71,72,73 導体素線
78 くさび
100 ステータ
110 集合導体
111 導体
112 絶縁層
113 接着層
114 皮膜
115 導体素線
116,117 固着部
120 ボビン
121 皮膜剥離装置
124 固着装置
126 巻取りボビン
200 回転電機
DESCRIPTION OF SYMBOLS 1 Conductor segment coil 2 Core 3 Housing 4 Connection part 5 Lead wire 10 Stator coil 11,12 Terminal part 15 End part 21,22,23 Conductor strand 30 Aggregate conductor segment coil 31,32,33 Conductor strand 37 Fixing pin 38 Bending pins 41, 42, 43 Conductor wires 44, 45, 46, 47 Adhering portions 71, 72, 73 Conductor wires 78 Wedge 100 Stator 110 Collective conductor 111 Conductor 112 Insulating layer 113 Adhesive layer 114 Film 115 Conductor strand 116, 117 Adhering portion 120 Bobbin 121 Film peeling device 124 Adhering device 126 Winding bobbin 200 Rotating electric machine

Claims (9)

  1.  複数の導体素線の外周面に絶縁層を形成し、前記絶縁層を覆うように接着層を形成し、前記接着層を介して互いに固着した集合導体を積層方向に曲げ成形した集合導体セグメントコイルであって、前記セグメントコイルの曲げ部に相当する部分を非固着とすることで、各導体素線が互いに分離、変形するように構成した集合導体セグメントコイルを用いてステータを構成した回転電機。 An aggregated conductor segment coil in which an insulating layer is formed on the outer peripheral surface of a plurality of conductor wires, an adhesive layer is formed so as to cover the insulating layer, and an aggregated conductor fixed to each other via the adhesive layer is bent in the stacking direction A rotating electrical machine in which a stator is configured by using a collective conductor segment coil configured such that each conductor wire is separated and deformed by unfixing a portion corresponding to a bent portion of the segment coil.
  2.  請求項1に記載の回転電機において、
     前記セグメントコイルの曲げ部に相当する部分の、曲げ内側の非固着部の長さを、曲げ外側の非固着部の長さよりも長くした集合導体セグメントコイルを用いてステータを構成した回転電機。
    In the rotating electrical machine according to claim 1,
    A rotating electrical machine in which a stator is configured by using a collective conductor segment coil in which a length of a non-fixed portion inside a bend of a portion corresponding to a bent portion of the segment coil is made longer than a length of a non-fixed portion outside the bend.
  3.  請求項1に記載の回転電機において、
     前記セグメントコイルの曲げ部に相当する部分で、前記各導体素線を積層方向と直行する方向にずらした集合導体セグメントコイルを用いてステータを構成した回転電機。
    In the rotating electrical machine according to claim 1,
    A rotating electrical machine in which a stator is configured by using a collective conductor segment coil in which each conductor wire is shifted in a direction perpendicular to the stacking direction at a portion corresponding to a bent portion of the segment coil.
  4.  請求項1に記載の回転電機において、
     前記接着層を介して互いに固着した固着部をスポット状に配置した集合導体セグメントコイルを用いてステータを構成した回転電機。
    In the rotating electrical machine according to claim 1,
    A rotating electrical machine in which a stator is configured by using a collective conductor segment coil in which fixing portions fixed to each other through the adhesive layer are arranged in a spot shape.
  5.  外周面に絶縁層および接着層を形成した導体素線から、前記絶縁層と前記接着層を長手方向に所定の間隔で所定長除去する工程と、
     前記絶縁層と前記接着層を除去した部分が重なるように、複数本の前記導体素線を積層して集合導体を形成する工程と、
     前記集合導体を側方から押圧して加熱することにより前記集合導体を、前記接着層を介して固着させる工程と、
     前記絶縁層と前記接着層を除去した部分で前記集合導体を切断する行程とを備えることを特徴とする集合導体セグメントコイル用の集合導体の製造方法。
    Removing a predetermined length of the insulating layer and the adhesive layer at predetermined intervals in the longitudinal direction from a conductor wire in which an insulating layer and an adhesive layer are formed on the outer peripheral surface;
    A step of laminating a plurality of the conductor strands so as to overlap a portion where the insulating layer and the adhesive layer are removed, and forming an aggregate conductor;
    Fixing the collective conductor via the adhesive layer by pressing and heating the collective conductor from the side; and
    And a step of cutting the aggregated conductor at a portion where the insulating layer and the adhesive layer are removed. A method for producing an aggregated conductor for an aggregated conductor segment coil.
  6.  請求項5に記載の集合導体セグメントコイル用の集合導体の製造方法において、
     前記集合導体を、前記接着層を介して固着させる工程は、コイルの曲げ部に相当する部分を非固着とすることを特徴とする集合導体セグメントコイル用の集合導体の製造方法。
    In the manufacturing method of the assembly conductor for assembly conductor segment coils according to claim 5,
    The method of manufacturing an assembly conductor for an assembly conductor segment coil, wherein the step of fixing the assembly conductor through the adhesive layer includes unfixing a portion corresponding to a bent portion of the coil.
  7.  複数の導体素線の外周面に絶縁層を形成し、前記絶縁層を覆うように接着層を形成し、前記接着層を介して互いに固着した集合導体において、コイルの曲げ部に相当する部分を非固着とすることで、前記各導体素線が互いに分離、変形するように構成し、前記集合導体を前記曲げ部で積層方向に折り曲げることを特徴とする回転電機のステータに用いる集合導体セグメントコイルの製造方法。 An insulating layer is formed on the outer peripheral surface of a plurality of conductor wires, an adhesive layer is formed so as to cover the insulating layer, and a portion corresponding to a bending portion of the coil is formed in the collective conductor fixed to each other via the adhesive layer. An assembly conductor segment coil for use in a stator of a rotating electrical machine, wherein the conductor wires are separated from each other and deformed by being non-fixed, and the assembly conductor is bent in the stacking direction at the bending portion. Manufacturing method.
  8.  請求項7に記載の集合導体セグメントコイルの製造方法において、
     前記コイルの曲げ部に相当する部分の、曲げ内側の非固着部の長さを、曲げ外側の非固着部の長さよりも長くしたことを特徴とする回転電機のステータに用いる集合導体セグメントコイルの製造方法。
    In the manufacturing method of the collective conductor segment coil of Claim 7,
    An assembly conductor segment coil used for a stator of a rotating electrical machine, wherein a length corresponding to a bending portion of the coil has a length of a non-fixed portion inside the bend longer than a length of a non-fixed portion outside the bend. Production method.
  9.  請求項7に記載の集合導体セグメントコイルの製造方法において、
     前記集合導体を前記曲げ部で折り曲げる際に、くさびを押し込むことにより、前記各導体素線を積層方向と直交する方向にずらすことを特徴とする回転電機のステータに用いる集合導体セグメントコイルの製造方法。
    In the manufacturing method of the collective conductor segment coil of Claim 7,
    A method for producing a collective conductor segment coil for use in a stator of a rotating electrical machine, wherein when bending the collective conductor at the bent portion, a wedge is pushed in to shift each conductor wire in a direction perpendicular to the stacking direction. .
PCT/JP2014/082326 2014-12-05 2014-12-05 Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same WO2016088270A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/082326 WO2016088270A1 (en) 2014-12-05 2014-12-05 Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/082326 WO2016088270A1 (en) 2014-12-05 2014-12-05 Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same

Publications (1)

Publication Number Publication Date
WO2016088270A1 true WO2016088270A1 (en) 2016-06-09

Family

ID=56091241

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/082326 WO2016088270A1 (en) 2014-12-05 2014-12-05 Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same

Country Status (1)

Country Link
WO (1) WO2016088270A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019065103A1 (en) * 2017-09-29 2019-04-04 アイシン・エィ・ダブリュ株式会社 Stator and stator manufacturing method
JP2019160706A (en) * 2018-03-15 2019-09-19 古河電気工業株式会社 Electrical connection unit material and electrical connection unit material set
JP2022031002A (en) * 2020-08-07 2022-02-18 株式会社デンソー Coating peeling method and coating peeling device of coupling conductor wire
WO2023032415A1 (en) * 2021-08-31 2023-03-09 株式会社セルコ Method for manufacturing coil and jig for bending coil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011028984A (en) * 2009-07-24 2011-02-10 Sumitomo Electric Ind Ltd Harness composed of coaxial cables
JP2013138594A (en) * 2011-11-30 2013-07-11 Sumitomo Electric Ind Ltd Segment coil, manufacturing method of segment coil, wire material for segment coil, and stator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011028984A (en) * 2009-07-24 2011-02-10 Sumitomo Electric Ind Ltd Harness composed of coaxial cables
JP2013138594A (en) * 2011-11-30 2013-07-11 Sumitomo Electric Ind Ltd Segment coil, manufacturing method of segment coil, wire material for segment coil, and stator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019065103A1 (en) * 2017-09-29 2019-04-04 アイシン・エィ・ダブリュ株式会社 Stator and stator manufacturing method
JP2019160706A (en) * 2018-03-15 2019-09-19 古河電気工業株式会社 Electrical connection unit material and electrical connection unit material set
JP2022031002A (en) * 2020-08-07 2022-02-18 株式会社デンソー Coating peeling method and coating peeling device of coupling conductor wire
WO2023032415A1 (en) * 2021-08-31 2023-03-09 株式会社セルコ Method for manufacturing coil and jig for bending coil

Similar Documents

Publication Publication Date Title
US11196325B2 (en) Stator for an electric machine
JP3586186B2 (en) Rotating machine stator
JP5028234B2 (en) Rotating electric machine and stator manufacturing method
JP5738385B2 (en) Stator and rotating electric machine equipped with the stator
US9935515B2 (en) Armature for rotary electric machine
KR20020005955A (en) Coil conductor for dynamoelectric machine
JP2014135240A (en) Conductor wire assembly for motor coil
JP2004320886A (en) Rotating electric machine and its stator
WO2013114735A1 (en) Rotating electrical machine
WO2013114734A1 (en) Coil unit production method
JP2018102118A (en) Method for producing stator and corresponding stator
JP2011072052A (en) Stator and method for manufacturing the same
US9705374B2 (en) Rotary electric machine and a manufacturing method thereof
TW201521330A (en) Concentrated type motor
JP6638629B2 (en) Rotating electric machine stator
WO2016088270A1 (en) Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same
WO2012169059A1 (en) Stator of rotating electric machine, manufacturing method of stator of rotating electric machine, and rotating electric machine
JP6288002B2 (en) Manufacturing method of rotating electrical machine stator and cassette coil for rotating electrical machine
US9431863B2 (en) Insulation component for an electric machine and method of assembly
JP6003314B2 (en) Stator for rotating electrical machine
JP4137864B2 (en) Rotating electric machine stator
JP5874554B2 (en) Stator for rotating electrical machine
JP3586201B2 (en) Rotating machine stator
JP2004208464A (en) Coil structure for electric motor
JP2012175727A (en) Rotor used for induction motor, and induction motor

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14907274

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14907274

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP