WO2017134722A1 - Moteur rotatif et procédé de fabrication d'un moteur rotatif - Google Patents

Moteur rotatif et procédé de fabrication d'un moteur rotatif Download PDF

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Publication number
WO2017134722A1
WO2017134722A1 PCT/JP2016/052878 JP2016052878W WO2017134722A1 WO 2017134722 A1 WO2017134722 A1 WO 2017134722A1 JP 2016052878 W JP2016052878 W JP 2016052878W WO 2017134722 A1 WO2017134722 A1 WO 2017134722A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
stator
insulator
wire
coil terminal
Prior art date
Application number
PCT/JP2016/052878
Other languages
English (en)
Japanese (ja)
Inventor
幸恵 山川
宏志 山中
一輝 藤本
遼 並河
孝則 清水
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/052878 priority Critical patent/WO2017134722A1/fr
Publication of WO2017134722A1 publication Critical patent/WO2017134722A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/02—Windings characterised by the conductor material
    • 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
    • H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto

Definitions

  • the present invention relates to a rotating electrical machine integrally molded with a thermosetting resin, and a method for manufacturing the rotating electrical machine.
  • Such a neutral point of the rotating electrical machine is joined by soldering or the like with a coil terminal wire wound around the upper portion of the terminal as described in Patent Document 1, for example.
  • Patent Document 1 soldering is performed in a state where a coil terminal wire is wound around a terminal.
  • a joint portion swells.
  • the stator is installed in the Dip automatic device, there is a high possibility that the coil terminal wire is disconnected from the terminal by hitting a neutral point on the automatic device.
  • This has a higher resistivity than copper and is more likely to occur with aluminum wires that are thicker than copper wires.
  • the present invention has been made to solve the above-described problem, and even when a plurality of coil terminal wires are directly twisted to form a neutral point without using a terminal or the like fixed to an insulator.
  • An object of the present invention is to provide a rotating electrical machine in which neutral points and coil terminal wires are not exposed from the resin surface during molding resin molding, and a method of manufacturing the rotating electrical machine.
  • the insulator has a neutral point to be formed, and the insulator has at least two first protrusions and second protrusions protruding upward from an upper part located on the outer peripheral side of the stator, and the first protrusions are A surface of the outer periphery of the stator of the first projecting piece, which is formed by at least two protrusions projecting above and below the surface, and has a coil path portion that encloses the coil terminal wire between the protrusions.
  • the second protruding piece is fixed to the second protruding piece.
  • the neutral point has a shape of a twisted portion in which bare aluminum wires of coil terminal wires are entangled with each other, and the twisted portion is joined with solder.
  • the insulator fitted to the stator iron core has at least two first protrusions and second protrusions protruding upward from an upper portion located on the outer peripheral side of the stator of the insulator
  • the one protrusion piece is a surface on the outer peripheral side of the stator of the first protrusion piece, and is formed by protrusions that protrude at least two above and below the surface, and a coil that holds the coil terminal wire between the protrusions.
  • the second protrusion piece is a surface on the outer peripheral side of the stator of the second protrusion piece, and is formed by a protrusion protruding at a position lower than the coil path portion on the surface.
  • the neutral point is a shape of a twisted portion in which bare aluminum wires of coil terminal wires are entangled with each other, and the twisted portion is joined with solder. This eliminates the possibility that the coil terminal wire is detached from the insulator, so that it is possible to twist with the root of the neutral point fixed at the time of twisting work, and the coil terminal wire and neutral point are formed during molding resin molding. Since it does not move due to pressure, productivity and quality can be improved. Further, since the neutral points are joined directly by solder without using a terminal, the quality of the neutral point of the stator is improved, and the cost can be reduced by eliminating the neutral point.
  • FIG. 2 is a perspective view showing a state before neutral point winding of the stator of the rotating electric machine of FIG. 1. It is a perspective view which shows the stator core in embodiment of this invention. It is a top view of 3 directions which shows the insulator in embodiment of this invention. It is explanatory drawing of the coil terminal wire and insulator on the insulator which expand
  • FIG. 1 is a sectional view showing a schematic configuration of a rotating electrical machine according to an embodiment of the present invention
  • FIG. 2 is a sectional view showing a state where a propeller fan is attached to the rotating electrical machine of FIG.
  • Rotating electrical machine 1 in the present embodiment is a brushless DC motor for driving propeller fan 100 as shown in FIG. 2, for example, and is mounted on an outdoor unit of an air conditioner. As shown in FIG. 1, the rotating electrical machine 1 is rotatably held on a cylindrical motor housing 4, an annular stator 2 incorporated in the motor housing 4, and an inner peripheral side of the stator 2. The rotor 3 is provided.
  • the motor housing 4 includes a casing 5 in which the stator 2 is integrally molded with a thermosetting resin, and a bracket cover 8 including an insulating bracket 6 and a sheet metal bracket 7 that cover the opening side of the casing 5. Yes.
  • the rotor 3 holds a plurality of permanent magnets 10 disposed on the outer peripheral side of the disk-shaped rotating body 9 so as to face the inner periphery of the stator 2.
  • a shaft 11 penetrating in the axial direction of the rotating body 9 is press-fitted and fixed at the center of the rotating body 9.
  • a pair of bearings 12 is attached to the shaft 11.
  • One bearing 12 is fixed to the bearing insertion portion 5 a of the casing 5, and the other bearing 12 is fixed to the bearing insertion portion 6 a of the insulating bracket 6.
  • the bearing insertion portion 5 a and the bearing insertion portion 6 a are located on the central axis of the annular stator 2.
  • FIG. 3 is a perspective view showing a state before neutral point winding of the stator of the rotating electric machine of FIG.
  • the stator 2 is formed by combining a plurality of stator cores 15 made of a magnetic material, for example, twelve stator cores 15 in an annular shape.
  • An insulator 16 made of an insulating material is attached to each stator core 15 at both ends in the axial direction of the stator 2.
  • an aluminum wire coil 17 is wound around the plurality of insulators 16.
  • the coil terminal wires 171, 172, and 173 on the winding start side of the coils 17 of the respective phases have exposed bare aluminum wires 171 a, 172 a, and 173 a from which the coating has been peeled, and these three bare aluminum wires 171 a are exposed. , 172a and 173a are joined by soldering to form a neutral point.
  • portions at the beginning of peeling that are boundaries between the coating and the peeling portion are referred to as peeling start points 171 b, 172 b, and 173 b.
  • FIG. 4 is a perspective view showing a stator core in the embodiment of the present invention
  • FIG. 5 is a plan view in three directions showing an insulator in the embodiment of the present invention.
  • a pair of insulators 16 having different shapes on the upper and lower sides are fitted to the upper and lower end portions of the stator core 15, but only the upper insulator 16 related to the present invention will be described here.
  • the stator core 15 includes a back yoke portion 151 located on the outer peripheral side of the stator 2, and a teeth portion 152 formed to protrude from the back yoke portion 151 in the axial direction of the stator 2. It is composed of Further, the tooth portion 152 is provided so as to protrude from the center portion of the back yoke portion 151, and is provided with a teeth base portion 152a around which the coil 17 is wound via the insulator 16, and the tooth base portion 152a facing the back yoke portion 151.
  • the teeth tip 152b is a space partition for accommodating the coil 17.
  • the insulator 16 has a groove portion 161 a formed by opening the outer peripheral side and the lower side of the stator 2, and a central insulating portion 161 that fits with the teeth base portion 152 a of the stator core 15.
  • An arc-shaped inner peripheral insulating portion 162 that is provided at a position on the inner peripheral side of the stator 2 of the central insulating portion 161 and into which the teeth tip portion 152b of the stator core 15 is fitted from below, and the central insulating portion 161
  • An outer peripheral insulating portion 164 formed in the outer peripheral side of the stator 2 and extending in the opposite direction from the central insulating portion 161 and contacting the inner peripheral surface of the back yoke portion 151 of the stator core 15;
  • a projection piece 163 provided on the top, for example, three first projection pieces 163b, a second projection piece 163c, and a third projection piece 163a are provided.
  • the insulator 16 having such a shape is fitted from above the stator core 15, and an insulator (not shown) having a shape different from that of the insulator 16 is fitted from below the stator core 15. Thereafter, the coil 17 is wound on the central insulating portion 161 of the insulator 16.
  • the coil 17 is housed between the inner peripheral insulating portion 162, the outer peripheral insulating portion 164, and the protruding piece 163 of the insulator 16, as shown in FIG. It becomes a shape.
  • the stator core 15 and the coil 17 are insulated.
  • the distance between the upper protrusion 163d and the lower protrusion 163e is, for example, 1.3 to 1.5 times the wire diameter of the coil 17.
  • the right second protrusion piece 163c is provided with a coil support portion 163f formed of a protrusion protruding outward on the outer peripheral surface of the stator 2.
  • the coil support portion 163f is installed at a position lower than the lower protrusion 163e of the coil path portion 163de.
  • the insulator 16 has a very simple insulator 16 shape in which at least three of the upper protrusion 163d and the lower protrusion 163e serving as the coil terminal line path and the protrusion-shaped coil support portion 163f need only be provided. The amount of resin and the amount of mold resin are not increased.
  • each of the upper protrusion 163d and the lower protrusion 163e forming the coil path portion 163de is one, it is not limited to this.
  • the upper protrusion 163d may be one and the lower protrusion 163e may be two, and conversely, the upper protrusion 163d may be two and the lower protrusion 163e may be one.
  • FIG. 6 is an explanatory view of the coil terminal wires and neutral points on the insulator showing the stator core of the rotating electrical machine according to the embodiment of the present invention
  • FIG. 7 is a diagram after the soldering in the embodiment of the present invention.
  • FIG. 8 is a perspective view which shows the principal part of the neutral point before mold in embodiment of this invention.
  • the coil terminal wire 171 located on the left side of the central coil terminal wire 172 is inserted between the upper protrusion 163d and the lower protrusion 163e provided on the first protrusion piece 163b.
  • the first projection piece 163b is placed on the outer peripheral side surface
  • the second projection piece 163c is put on the outer peripheral side surface of the second projection piece 163c in a state where it is in contact with the lower surface of the coil support portion 163f. This is repeated for each insulator 16.
  • the coil terminal wire 171 is locked by the coil support portion 163f positioned below the lower protrusion 163e and the lower protrusion 163e.
  • the coil terminal wire 173 positioned on the right side of the coil terminal wire 172 is placed on the side surface on the outer peripheral side of the second projecting piece 163c in a state where the coil terminal wire 173 is applied to the lower surface of the coil support portion 163f of the second projecting piece 163c. And inserted between the upper protrusion 163d and the lower protrusion 163e provided on the first protrusion piece 163b, and is wound around the outer peripheral side surface of the first protrusion piece 163b. This is repeated for each insulator 16. Also in this case, the coil terminal wire 173 is locked by the coil support portion 163f positioned below the lower protrusion 163e and the lower protrusion 163e.
  • the coil terminal wire 171 is hooked on the coil support portion 163f closest to the coil terminal wire 172, and the coil terminal wire 173 is hooked on the upper protrusion 163d closest to the coil terminal wire 172. Bent in the axial direction.
  • the central coil terminal wire 172 is extended in the axial direction as it is, and the two coil terminal wires 171 and 173 are bundled together with the central coil terminal wire 172.
  • the neutral point 174 is from the twist start point 174a of the coil terminal wires 171, 172, 173 to the twist end point 174b which is the coil end, and the peeling start points 171b, 172b, 173b are the twist start point 174a and the twist end point. Between 174b.
  • the coil terminal wires 171 and 173 can be supported by the coil path portion 163ed and the coil support portion 163f on the insulator 16, so that the coil terminal wires can be supported.
  • the workability of twisting 171, 172, and 173 is improved.
  • the possibility that the coil terminal wires 171 and 173 are detached from the insulator during molding is smaller.
  • the possibility that a part of the coil terminal wires 171 and 173 are exposed from the surface of the mold is further reduced.
  • the distance between the upper protrusion 163d and the lower protrusion 163e of the coil path portion 163ed is 1.3 to 1.5 times the wire diameter of the coil terminal wires 171, 172, 173, the insulator of the coil terminal wires 171, 173 is used. Wiring by turning around 16 is easy and workability is improved.
  • the automatic dip is soldered from the twist end point 174b of the neutral point 174 to the soldering base 174c (shaded portion).
  • the coil terminal wires 171, 172, 173 are twisted and fixed to each other, there is a possibility that the neutral point 174 can be solved even if the neutral point 174 hits the device when installed in the device. Very low. Also, by directly joining the bare aluminum wires 171a, 172a, 173a of the coil terminal wires 171, 172, 173, the possibility of corrosion due to the potential difference between different metals such as aluminum wires and copper terminals can be reduced, and the quality is improved.
  • Separation start points 171b, 172b, 173b exist between the torsion start point 174a and the torsion end point 174b of the coil terminal wires 171, 172, 173, and further, the separation start points 171b, 172b, 173b and the torsion end point 174b exist.
  • the above-mentioned soldering base 174c exists between the two. That is, the bare aluminum wires 171a, 172a, and 173a of the coil terminal wires 171, 172, and 173 that are not soldered exist between the soldering root 174c and the twist start point 174a.
  • the neutral point 174 after soldering is located between the protruding piece 163 of the insulator 16 and the outer periphery of the stator 2 with respect to the circumferential direction of the stator 2 as shown in FIG. Bending with respect to the axial direction of the stator 2 so that the twist end point 174b (terminal portion) of the neutral point 174 is located above the central insulating portion 161 of the insulator 16, and molding is performed with a thermosetting resin. Is done.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

La présente invention porte sur un moteur rotatif qui comprend au moins deux premières pièces faisant saillie et secondes pièces faisant saillie qui font saillie vers le haut depuis une section supérieure positionnée sur le côté circonférentiel extérieur de pièces de fixation pour isolants, les premières pièces faisant saillie étant formées d'au moins deux saillies qui font saillie au-dessus et au-dessous des surfaces circonférentielles extérieures des pièces de fixation des premières pièces faisant saillie, et ayant une section de trajet de bobine dans laquelle les fils d'extrémité d'une bobine sont alimentés entre les saillies et ainsi retenus, et les secondes pièces faisant saillie étant formées de saillies qui font saillie depuis la surface circonférentielle extérieure des pièces de fixation des secondes pièces faisant saillie, à une extension moindre que la section de trajet de bobine, et ayant une section de support de bobine qui verrouille les fils d'extrémité de la bobine contre la section de trajet de bobine par pression des fils d'extrémité de la bobine sur les surfaces inférieures des saillies. Des points neutres prennent la forme de sections vrillées formées par entrelacement des fils d'extrémité en aluminium nu de la bobine, les sections vrillées étant jointes par soudure.
PCT/JP2016/052878 2016-02-01 2016-02-01 Moteur rotatif et procédé de fabrication d'un moteur rotatif WO2017134722A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/052878 WO2017134722A1 (fr) 2016-02-01 2016-02-01 Moteur rotatif et procédé de fabrication d'un moteur rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/052878 WO2017134722A1 (fr) 2016-02-01 2016-02-01 Moteur rotatif et procédé de fabrication d'un moteur rotatif

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WO2017134722A1 true WO2017134722A1 (fr) 2017-08-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107968510A (zh) * 2017-12-29 2018-04-27 重庆超力高科技股份有限公司 绝缘骨架、定子组件以及无刷电机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012016100A (ja) * 2010-06-30 2012-01-19 Honda Motor Co Ltd 回転電機
JP2013115949A (ja) * 2011-11-29 2013-06-10 Aichi Elec Co 端部絶縁部材、固定子および回転機
JP2013207964A (ja) * 2012-03-29 2013-10-07 Fujitsu General Ltd アルミ線と銅線の接続方法及びこの接続方法により構成されたモータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012016100A (ja) * 2010-06-30 2012-01-19 Honda Motor Co Ltd 回転電機
JP2013115949A (ja) * 2011-11-29 2013-06-10 Aichi Elec Co 端部絶縁部材、固定子および回転機
JP2013207964A (ja) * 2012-03-29 2013-10-07 Fujitsu General Ltd アルミ線と銅線の接続方法及びこの接続方法により構成されたモータ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107968510A (zh) * 2017-12-29 2018-04-27 重庆超力高科技股份有限公司 绝缘骨架、定子组件以及无刷电机

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