WO2021033676A1 - Stator et moteur électrique - Google Patents

Stator et moteur électrique Download PDF

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Publication number
WO2021033676A1
WO2021033676A1 PCT/JP2020/031068 JP2020031068W WO2021033676A1 WO 2021033676 A1 WO2021033676 A1 WO 2021033676A1 JP 2020031068 W JP2020031068 W JP 2020031068W WO 2021033676 A1 WO2021033676 A1 WO 2021033676A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulator
stator
annular
inner peripheral
core
Prior art date
Application number
PCT/JP2020/031068
Other languages
English (en)
Japanese (ja)
Inventor
康仁 塩谷
宗忠 佐藤
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN202080056708.2A priority Critical patent/CN114270665B/zh
Priority to JP2020568822A priority patent/JP7050239B2/ja
Publication of WO2021033676A1 publication Critical patent/WO2021033676A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • 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

Definitions

  • the present invention relates to a stator and an electric motor.
  • stator manufactured by winding a main winding or an auxiliary winding around an iron core continuously connected in a straight line and then connecting the ends in an annular shape.
  • the main winding 111, the auxiliary winding 112, and the speed adjustment winding 113 are wound around the iron core 101 which is continuous on a straight line. That is, in the main winding 111, the auxiliary winding 112, and the speed adjusting winding 113, the main winding start end 111a of the main winding 111 is changed to the main winding end 111b, and the auxiliary winding 112 is also changed from 112a to 112b to the iron core. It is wound alternately and is continuously wound between the iron cores by a crossover wire 114. Further, the speed adjusting winding 113 is wound around the main winding 111 or the auxiliary winding 112 as needed. Each winding has a pair of end ends.
  • the speed adjustment winding is an auxiliary winding that makes it possible to change the rotation speed of the electric motor.
  • the stator and the electric motor according to the present invention are a stator including a core, a winding, and an insulator that insulates between the core and the winding, and is an insulator.
  • An annular connecting part that connects a plurality of insulator sets consisting of a core and an insulator group in a ring shape at a predetermined interval, and two stator members consisting of an insulator group and an annular connecting part, and the insulator group has a predetermined distance from each other. It is provided with a combination structure in which they are alternately positioned and combined so as to be filled. This will solve the desired problem.
  • the manufacturing process of the stator can be shortened and the winding machine can be downsized.
  • FIG. 1 is a perspective view of an electric motor according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view of the core according to the first embodiment of the present invention.
  • FIG. 3 is a perspective view of the insulator and the annular connection portion according to the first embodiment of the present invention.
  • FIG. 4 is a perspective view of the stator member according to the first embodiment of the present invention.
  • FIG. 5 is an explanatory view of assembling the stator according to the first embodiment of the present invention.
  • FIG. 6 is a perspective view of the stator according to the first embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view of the substrate fixing portion when the rotor is mounted according to the first embodiment of the present invention.
  • FIG. 8 is an explanatory view of assembling the rotor and the stator according to the first embodiment of the present invention.
  • FIG. 9 is a schematic view showing a simplified state of the conventional winding.
  • FIG. 1 is a perspective view of the electric motor 1 according to the present embodiment
  • FIG. 2 is a perspective view of the core 5.
  • the electric motor 1 includes a stator 2, a rotor 3, and a substrate 4.
  • the stator 2 includes an iron core, that is, a core 5, an insulator 6, and a winding 7.
  • the joint iron portion 8 formed on the outer diameter side, the base portion 17 protruding from the joint iron portion 8 to the inner peripheral side, and the tooth portion 9 provided at the tip of the base portion 17 are integrally formed.
  • the core 5 is formed in an annular shape in the completed shape of the stator 2.
  • the tooth portion 9 is provided with a rotor space described later, in other words, an inner peripheral curved surface 33 facing the outer peripheral surface of the rotor 3, on the opposite side of the joint iron portion 8.
  • the insulator 6 has a structure that covers the core 5, and is formed by winding a winding 7 which is a conductive wire mainly made of an alloy of copper or aluminum around a plurality of bases 17 via the insulator 6. , Plays a role in providing electrical insulation between the core 5 and the winding 7.
  • the winding 7 is wound around the core 5 partially covered with the insulator 6 from above the insulator 6.
  • the end of the winding 7 is entwined with a terminal pin provided in the insulator 6 and connected to the terminal pin with solder or the like.
  • the end connection may be made by fusing or the like.
  • the outer peripheral curved surface 34 (see FIG. 8) is arranged in the rotor space located at the center of the annular shape of the stator 2 so as to face the inner peripheral curved surface 33 of the core 5.
  • the rotor 3 rotates by energizing the winding 7, and as a result, the rotating shaft 10 is rotationally driven.
  • the laminated thickness of the rotor 3, that is, the height in the rotation axis 10 direction is substantially equal to the height in the same direction of the core 5.
  • the board 4 maintains the connection relationship of a plurality of windings 7 provided by electrically connecting the windings 7 to the terminal pins to which the windings 7 are connected.
  • FIGS. 3 and 4 is a perspective view of the insulator 6 and the annular connection portion 11, and FIG. 4 is a perspective view of the stator member 12 in which the core is attached to the insulator 6 and the annular connection portion 11 of FIG.
  • the insulator 6 includes an outer peripheral portion 13, an inner peripheral portion 14, a connecting portion 15, and a guide portion 24, and is connected by an annular connecting portion 11.
  • the outer peripheral portion 13 is located on the outer peripheral side of the insulator 6 formed in an annular shape.
  • the outer peripheral portion 13 is adjacent to the inner peripheral surface of the joint iron portion 8 of the core 5 and covers the inner peripheral surface of the joint iron portion 8.
  • the inner peripheral portion 14 is located on the inner peripheral side of the insulator 6 formed in an annular shape.
  • the inner peripheral portion 14 covers the outer peripheral surface of the tooth portion 9 adjacent to the outer peripheral surface of the tooth portion 9 of the core 5.
  • the connecting portion 15 connects the outer peripheral portion 13 and the inner peripheral portion 14 and covers the base portion 17 of the core 5.
  • the connection portion 15 includes a through hole 16 for covering the base portion 17 of the core 5.
  • the guide portion 24 is provided on the side surface of the outer peripheral portion 13 of the insulator 6, that is, on the connecting side 25 in parallel with the rotation shaft 10.
  • the guide portion 24 regulates the adjacent insulator 6 so as to be slidable in parallel with the rotation shaft 10 when the adjacent insulator 6 is installed. That is, it contributes to maintaining the shape of the stator 2 on the outer peripheral side.
  • the through hole 16 is provided in the connecting portion 15 and is a space for connecting the outer peripheral portion 13 and the inner peripheral portion 14, and the base portion 17 is located there.
  • FIG. 4 shows a stator member 12 in which the insulator 6 is mounted on the core 5 to form the insulator set 19, and the insulator set 19 is connected in an annular shape by the annular connecting portion 11.
  • the annular connection portion 11 is provided at one end of the insulator 6 in the axial direction, and connects the inner peripheral portions 14 constituting the insulator set 19 in an annular shape.
  • the annular connection portion 11 is an integrated structure integrally formed with the insulator 6.
  • the annular connection portion 11 is provided in parallel to the surface on the annular plane 18 virtually provided at one end of the insulator set 19. In other words, a plurality of insulator sets 19 are erected in the same direction (four in the downward direction in FIG. 3) with reference to the annular plane 18.
  • the annular connection portion 11 further includes a substrate fixing portion 20, an engaging portion 26, and a rib 32.
  • the substrate fixing portion 20 is a portion for fixing the substrate 4 so as to project in the direction opposite to the insulator set 19 with respect to the annular plane 18. At least three board fixing portions 20 are provided in the circumferential direction. Further, the substrate fixing portion 20 includes a bulging portion 27 (see FIGS. 7 and 8) on the rotor space side in the ring shape of the stator 2. The details of the bulging portion 27 will be described later.
  • Engagement portions 26 are provided at both ends of the insulator 6.
  • one end side is referred to as an engaging portion 26B, and the other end side is referred to as an engaging portion 26A.
  • the insulator space is defined as a space formed between the adjacent insulator sets 19 and having a predetermined interval.
  • the engaging portion 26B is provided on the insulator space side of the annular connecting portion 11 and integrally formed with the annular connecting portion 11 in the same direction as the insulator set 19 with respect to the annular plane 18.
  • the engaging portion 26A is provided on the protruding tip 38 side of the inner peripheral portion 14 of the insulator 6. By engaging the two engaging portions 26A and 26B, the positions of the protruding tip 38 of the inner peripheral portion 14 and the annular connecting portion 11 are fixed, which contributes to maintaining the shape of the stator 2 on the inner peripheral side. To do.
  • the engaging portion 26A and the engaging portion 26B as the engaging portion 26 have a concavo-convex shape that engages with each other, thereby suppressing the movement of the insulator 6 in the radial direction during engagement.
  • the rib 32 is a protrusion provided on at least one of the annular connection portion 11 or the inner peripheral portion 14 to support the transfer of the winding 7 to the adjacent insulator 6.
  • the rib 32 projects in the direction opposite to that of the insulator set 19 with respect to the annular plane 18. Since the crossover wire forming a part of the winding 7 crosses between the insulators 6 via the rib 32, the crossover wire can be crossed along the ring of the annular connection portion 11, and cutting or the like can be suppressed. it can.
  • the rib 32 in FIGS. 3 and 4 is an example provided on the inner peripheral portion 14.
  • Insulator sets 19 are arranged at equal intervals with respect to the annular connection portion 11. That is, in FIG. 4, the central axes 21 are arranged on the ring at 90-degree intervals with respect to the central axis 21 that passes through the center in the circumferential direction of the insulator set 19 and is parallel to the rotation axis 10. To. Further, in one stator member 12, the width 22 of the insulator space formed between the stator group 19 and the adjacent insulator group 19 coincides with the width 23 of the insulator group 19.
  • FIGS. 5 and 6 are assembly explanatory views of the stator 2
  • FIG. 6 is a perspective view of the stator 2.
  • stator 2 When assembling the stator 2, prepare two stator members 12A and a stator member 12B in which the winding 7 is wound around the insulator 6.
  • the central axes 21 of the two stator members 12 are displaced by 45 degrees, and the annular connecting portions 11 (annular connecting portions 11A and annular connecting portions 11B) are located at the far ends of the stator members 12 of each other. Position it so that it is located.
  • the insulator set 19 faces the insulator space of the opposing stator member 12.
  • stator member 12A and the stator member 12B are brought closer to each other in the directions of the arrows 30A and 30B, the corresponding guide portions 24A and guide portions 24B provided on the insulator 6 slide with each other.
  • the stator member 12A and the stator member 12B are connected while maintaining the annular shape.
  • the engaging portion 26A provided at the protruding tip 38 of the insulator 6 and the engaging portion 26B provided at the annular connecting portion 11 are engaged with each other.
  • the stator 2 is completed by arranging the substrate 4 on the substrate fixing portion 20 in the engaged state and connecting the terminal pin to which the winding 7 is fixed to the substrate 4.
  • the display of the substrate 4 is omitted.
  • adjacent insulator sets 19 are arranged on the same circumference.
  • the annular connection portion 11A is arranged at one end (upper end) of the insulator group 19, and the annular connection portion 11B is arranged at the other end (lower end) of the insulator group 19, that is, at both ends of the stator 2 facing each other. That is, the stator 2 has a combination structure in which the insulator sets 19 are alternately positioned and combined so as to fill a predetermined distance from each other.
  • the stator 2 having such a shape can be wound around one stator member 12 from the outer periphery of the insulator 6 provided in an annular shape by a winding machine. Therefore, the winding machine can be miniaturized.
  • stator members 12 having the same shape, which can contribute to reducing the number of parts.
  • the annular shape of the stator 2 is firmly maintained on the inner peripheral portion and the outer peripheral portion. be able to.
  • FIG. 7 is a partial cross-sectional view of the substrate fixing portion 20 when the rotor 3 is mounted
  • FIG. 8 is an assembly explanatory view of the rotor 3 and the stator 2.
  • the substrate fixing portion 20 includes a bulging portion 27.
  • the bulging portion 27 bulges toward the rotor space side in the radial direction from the inner peripheral curved surface 33 of the core 5 in a state where the stator 2 and the rotor 3 are combined.
  • the degree of bulging of the bulging portion 27 is such that the innermost peripheral end portion 36 of the bulging portion 27 is on the inner circumference of the inner peripheral curved surface 33 of the core 5 and comes into contact with the outer peripheral curved surface 34 of the rotor 3. ..
  • the bulging portion 27 bulges in the inner peripheral direction with a gap length of about 35, which is the distance between the inner peripheral curved surface 33 and the outer peripheral curved surface 34, with the inner peripheral curved surface 33 as a reference. It is located on the same circumference as the circumference formed by.
  • the bulging portion 27 may be bulged further to the inner circumference than the same circumference of the outer peripheral curved surface 34.
  • the rotation axis direction end 28 of the rotor 3 and the rotation axis direction end 37 of the core 5 are substantially aligned in the rotation axis direction.
  • the bulging portion 27 is located outside the rotation axis direction end 28 of the rotor 3 in the rotation axis direction (above the rotation axis direction end 28 in FIG. 7). Further, the bulging portion 27 has a gradient 29 that goes in the inner peripheral direction from the tip portion 31 of the substrate fixing portion 20 that is outside in the rotation axis direction toward the rotor space.
  • a gap length 35 is provided between the inner peripheral curved surface 33 of the core 5 and the outer peripheral curved surface 34 of the rotor 3.
  • the smaller the gap length 35 the higher the performance as an electric motor, and depending on the electric motor, it is less than 1 mm. In other words, there is only a gap having a gap length of 35 between the outer peripheral curved surface 34 of the rotor 3 and the inner peripheral curved surface 33 of the stator.
  • the stator 2 includes a bulging portion 27.
  • the rotor 3 is inserted into the stator 2 from either the vertical direction at the axial center 30 of the rotor space, and the laminated end surface of the rotational axial end 28 of the rotor 3 and the core 5. It is inserted until both of them match.
  • the outer peripheral curved surface 34 of the rotor 3 comes into contact with the bulging portion 27, and the rotation axis 10 of the rotor 3 is guided on the same line as the axis center 30 of the rotor space by the gradient 29.
  • the bulging portion 27 guides the rotor 3 precisely to the center, so that the rotor 3 is not inserted properly. It is possible to prevent the crossover from being crossed. Further, since the bulging portion 27 is located outside the end portion 28 in the rotation axis direction, the bulging portion 27 can be operated without contacting the rotor 3 even when the rotor 3 is driven to rotate. ..
  • the bulging portions 27 are arranged evenly on the circumference, but it may be uneven, and at least three points may be provided for the purpose of guiding the rotor 3 to the center.
  • the shape of the bulging portion 27 may be any shape as long as it can support the outer peripheral curved surface 34 of the rotor 3.
  • insulator sets 19 are connected to one stator member 12, but the number is not limited to four if there are a plurality of insulator sets 19. In the AC electric motor, it is preferable that one stator member 12 is provided with an even number of insulator sets 19 due to the characteristics of the winding.
  • the core 5, the insulator 6, and the annular connection portion 11, that is, the insulator set 19 may be integrally molded.
  • a plurality of cores 5 are arranged in a mold, and the resin constituting the insulator 6 and the annular connection portion 11 is poured into the insulator to form the insulator set 19. From the shape of the insulator set 19 thus generated, it can be confirmed in the product state that the insulator set 19 is integrally formed as a product.
  • the stator 2 configured in this way can be used for the electric motor 1, and the electric motor 1 can be suitably used for the blower.
  • the stator according to the present invention is useful as it can improve the manufacturing efficiency of the electric motor.

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

Abstract

Dans ce stator et moteur électrique, le stator, qui est pourvu de noyaux, d'enroulements et d'isolateurs qui isolent les noyaux et les enroulements les uns des autres, comporte : des parties de liaison annulaires (11A, 11B) qui relient une pluralité d'ensembles isolateurs, comprenant les isolants et les noyaux, sous une forme annulaire, espacés selon un espace prédéterminé entre eux ; et une structure combinée dans laquelle deux éléments de stator (12A, 12B) comprenant les ensembles isolateurs et les parties de liaison annulaires sont combinés pour amener les ensembles isolateurs à être positionnés de façon alternée de manière à remplir mutuellement les espaces prescrits.
PCT/JP2020/031068 2019-08-21 2020-08-18 Stator et moteur électrique WO2021033676A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080056708.2A CN114270665B (zh) 2019-08-21 2020-08-18 定子、电动机
JP2020568822A JP7050239B2 (ja) 2019-08-21 2020-08-18 固定子、電動機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019150791 2019-08-21
JP2019-150791 2019-08-21

Publications (1)

Publication Number Publication Date
WO2021033676A1 true WO2021033676A1 (fr) 2021-02-25

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Application Number Title Priority Date Filing Date
PCT/JP2020/031068 WO2021033676A1 (fr) 2019-08-21 2020-08-18 Stator et moteur électrique

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JP (1) JP7050239B2 (fr)
CN (1) CN114270665B (fr)
WO (1) WO2021033676A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07236299A (ja) * 1993-12-28 1995-09-05 Sony Corp 鉄心モータ装置及び鉄心モータの駆動制御方法
JPH07303348A (ja) * 1994-02-16 1995-11-14 Emerson Electric Co スイッチ型反作用電動機
JP2008178252A (ja) * 2007-01-19 2008-07-31 Jtekt Corp バスバー構造体、該バスバー構造体の製造方法、及び該バスバー構造体を有する電動モータ
WO2013157101A1 (fr) * 2012-04-18 2013-10-24 三菱電機株式会社 Stator, moteur, soufflante, et procédé de fabrication de stator
JP2015023630A (ja) * 2013-07-17 2015-02-02 アスモ株式会社 ステータの製造方法及びステータ
JP2015080300A (ja) * 2013-10-15 2015-04-23 アスモ株式会社 電機子、回転電機、電機子の製造方法

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JP3722712B2 (ja) * 2001-03-22 2005-11-30 山洋電気株式会社 回転電機用固定子
JP4301334B2 (ja) * 2007-10-19 2009-07-22 トヨタ自動車株式会社 回転電機
JP5737979B2 (ja) * 2011-02-04 2015-06-17 アスモ株式会社 回転電機のステータ、及びその製造方法
US20130200742A1 (en) * 2012-02-08 2013-08-08 Asmo Co., Ltd. Stator, brushless motor, stator manufacturing method
JP5907833B2 (ja) * 2012-07-20 2016-04-26 三菱電機株式会社 回転電機の固定子
JP6463895B2 (ja) * 2014-02-28 2019-02-06 日本電産テクノモータ株式会社 モータ用ステータ及びその製造方法
JP5815163B1 (ja) * 2014-08-01 2015-11-17 三菱電機株式会社 電動機の固定子
US10432041B2 (en) * 2015-11-04 2019-10-01 Mitsubishi Electric Corporation Stator, motor, compressor, and refrigerating and air-conditioning apparatus
CN108475947B (zh) * 2016-01-13 2020-06-09 日本电产高科电机株式会社 定子、马达以及定子的制造方法
JP6719052B2 (ja) * 2016-06-23 2020-07-08 パナソニックＩｐマネジメント株式会社 インシュレータ、電動機、及び送風装置
JP6924934B2 (ja) * 2016-08-30 2021-08-25 パナソニックＩｐマネジメント株式会社 巻線固定構造体、及び電動機
JP2018068069A (ja) * 2016-10-21 2018-04-26 日本電産テクノモータ株式会社 ステータ、モータ、およびステータの製造方法
JP6685434B2 (ja) * 2017-01-11 2020-04-22 三菱電機株式会社 回転電機のステータおよび回転電機のステータの製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07236299A (ja) * 1993-12-28 1995-09-05 Sony Corp 鉄心モータ装置及び鉄心モータの駆動制御方法
JPH07303348A (ja) * 1994-02-16 1995-11-14 Emerson Electric Co スイッチ型反作用電動機
JP2008178252A (ja) * 2007-01-19 2008-07-31 Jtekt Corp バスバー構造体、該バスバー構造体の製造方法、及び該バスバー構造体を有する電動モータ
WO2013157101A1 (fr) * 2012-04-18 2013-10-24 三菱電機株式会社 Stator, moteur, soufflante, et procédé de fabrication de stator
JP2015023630A (ja) * 2013-07-17 2015-02-02 アスモ株式会社 ステータの製造方法及びステータ
JP2015080300A (ja) * 2013-10-15 2015-04-23 アスモ株式会社 電機子、回転電機、電機子の製造方法

Also Published As

Publication number Publication date
JPWO2021033676A1 (ja) 2021-09-13
JP7050239B2 (ja) 2022-04-08
CN114270665B (zh) 2023-12-05
CN114270665A (zh) 2022-04-01

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