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WO2015093157A1 - Machine électrique rotative - Google Patents

Machine électrique rotative Download PDF

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Publication number
WO2015093157A1
WO2015093157A1 PCT/JP2014/079013 JP2014079013W WO2015093157A1 WO 2015093157 A1 WO2015093157 A1 WO 2015093157A1 JP 2014079013 W JP2014079013 W JP 2014079013W WO 2015093157 A1 WO2015093157 A1 WO 2015093157A1
Authority
WO
WIPO (PCT)
Prior art keywords
bobbin
winding
diameter side
coil
inner diameter
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2014/079013
Other languages
English (en)
Japanese (ja)
Inventor
中山　賢治
金澤　宏至
濱田　泰久
省三 川崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
Original Assignee
Hitachi Automotive Systems Ltd
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 Hitachi Automotive Systems Ltd filed Critical Hitachi Automotive Systems Ltd
Priority to JP2015553415A priority Critical patent/JPWO2015093157A1/ja
Publication of WO2015093157A1 publication Critical patent/WO2015093157A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores

Definitions

  • the present invention relates to a bobbin structure in which coil windings are concentratedly wound on a stator used in a rotating electric machine, and a winding structure.
  • Patent Document 1 a groove for dropping the first winding coil is formed in the winding portion of the axial end face of the bobbin, and winding is performed using a step with the axial end face of the bobbin formed by winding the coil in the groove.
  • a structure for guiding lines is disclosed.
  • Patent Document 2 a chamfered portion provided on both end surfaces of the flange portion of the bobbin and an inclined portion which gradually decreases in height toward the outer diameter side of the bobbin are provided on the axial end surface of the bobbin to induce the winding.
  • Patent Document 3 discloses a structure in which a step portion is provided on an end surface in the axial direction of a bobbin and a winding is guided by a coil wound around the step portion.
  • the outer diameter and inner diameter shape that determine the magnetic circuit width of the outer diameter side flange portion of the stator are formed in an arc shape so that the magnetic circuit width is uniform, and a stator structure that does not cause waste in the winding area and
  • the shape of the bobbin that fits to the inner diameter side of the outer flange side of the stator is configured in an arc shape so as to follow it, so that the winding area is not wasted, and the magnetic circuit and winding area are A structure that can be used effectively and optimally.
  • an inclined part that gradually decreases in height toward the outer diameter side of the bobbin is provided on the axial end surface of the bobbin in accordance with the coil track during winding, and the coil is wound with winding tension by using the inclined part.
  • the inclined part where the coil is induced has a smooth inclined structure composed of R in order to prevent the coil coating from being damaged during induction.
  • the load that the winding tension gives to the bobbin flange part is provided in addition to holding the coil with R greater than the coil radius.
  • the structure can be reduced. Further, in order to realize an aligned winding that does not collapse, a structure is provided in which a protrusion for fixing the winding position is provided on the bobbin.
  • the outer diameter and the inner diameter of the outer diameter side flange portion of the stator are formed in an arc shape, and the magnetic circuit width can be made uniform to prevent the deterioration of the motor characteristics.
  • the area can be used to the maximum extent possible.
  • the bobbin shape fitted to the inner diameter side of the outer diameter side flange portion of the stator is also formed in an arc shape so as to learn from it, so that an effect of not generating waste in the winding area can be obtained.
  • the bobbin gradually from the portion on the inner diameter side of one or two coils from the outermost diameter side when the coil track at the time of winding enters from the side surface of the bobbin toward the outer diameter side gradually toward the axial end surface of the bobbin.
  • the slanted portion of the bobbin through which the coil is guided is smoothly configured with a semi-elliptical R surface, so that the effect of preventing the coil coating from being damaged during coil induction can be obtained.
  • Example 1 (a) Front view of stator, (b) Front view of stator showing conventional example Example 1 (a) Back view of bobbin, (b) Front view of bobbin, (c) Cross section of bobbin Example 1 (a) Perspective view of stator and bobbin, (a) Front view of stator and bobbin Round wire coil winding perspective view of Example 1
  • An embodiment according to the present invention includes a stator core structure and a bobbin structure for winding a coil of an in-vehicle rotating electrical machine, and a coil winding structure, and an outer diameter side constituting a magnetic circuit width on the outer diameter side of the stator core; By configuring the inner diameter side in an arc shape, it is possible to expect an effect of obtaining a magnetic circuit width that is uniform in width and does not generate a useless space in the winding area.
  • the bobbin stator mating surface is also formed in an arc shape, so that the winding area 2e can be used to the maximum extent possible, and the cost can be reduced by increasing the winding space factor and improving motor performance. Possible effects are obtained.
  • a winding machine is provided by providing a taper surface on the surface of the winding portion of the bobbin that gradually decreases in height toward the bobbin flange, starting from a portion located on the inner diameter side of the coil diameter by one or two from the flange end surface. It is possible to automatically wind the coil outside the nozzle track by using the winding tension, and to realize a high space factor of the winding.
  • the coil surface of the bobbin is composed of ⁇ (arc) -shaped R, and the coil surface breakage is reduced by providing a semi-elliptical R on the tapered surface.
  • ⁇ (arc) -shaped R In order to be able to form a concave curved surface at the base of the flange, an R that is greater than the radius of the coil is provided, and a structure that can hold the first coil while reducing the load on the flange due to winding tension.
  • FIG. 1 shows an axial sectional view of an in-vehicle electric motor 100 which is an electric power steering motor.
  • a divided stator core 2 is press-fitted or shrink-fitted on the inner peripheral side of the housing 1 while maintaining a ring shape without welding or welding.
  • a bobbin 3 is attached to the stator core 2 and a coil 4 is wound around the outer periphery thereof.
  • the lead wire of the coil 4 is connected to a bus bar terminal 15 provided in the bus bar mold 14, and an end face of the bus bar terminal 15 is connected to an end face of a bus bar terminal 17 provided in another bus bar mold 16 by welding.
  • a rotor (rotor core 6) composed of a shaft 5, a magnet 7, and a magnet cover 8 is provided on the inner peripheral side of the stator core 2, and the rotor is supported by an F bearing 9 and an R bearing 10, and the F bearing 9 is fixed to the housing 1, and the R bearing 10 is fixed to the cover motor 13.
  • the cover motor 13 is provided with a through hole through which the bus bar terminal 15 passes, and is connected to the bus bar mold 16 by a screw 18.
  • the bus bar terminal 17 is wired so that the connection of each phase can be output in three phases, and is a UVW three-phase output.
  • the motor rotates by supplying power from the inverter to the three-phase output terminal 19.
  • the bearing structure that supports the rotation of the motor is set by press-fitting the inner ring of the F bearing 9 on the gear side of the shaft 5 and fixing the outer ring in the axial direction by the housing 1 and the tongue 12.
  • the inner ring of the R bearing 10 is press-fitted to the inverter side of the shaft 5, and the preload of the preload spring 11 pushes the outer ring of the R bearing 10 by the reaction force using the end face of the cover motor 13, and the preload is always applied to the inverter side. It has a structure. After the motor is assembled, preload is always generated from the tip of the shaft 5 toward the inverter side, and the gap between the inner and outer rings of the F bearing 9 and the R bearing 10 can be minimized. Therefore, it has a structure that suppresses the abnormal noise when the bearing rotates.
  • the stator core 2 is disposed on the outermost periphery.
  • the stator core 2 is composed of a T-shaped split core, and has a two-continuous winding structure in which one coil 4 is intensively wound around two teeth.
  • Each stator core 2 is connected in an annular shape by being welded to the outer periphery of the core back or fitted to the inner diameter of the housing 1 without welding.
  • the coil lead wire 4a is crimped to the bus bar terminal 15 provided in the bus bar mold 14, and then the coil lead wire 4a and the bus bar terminal 15 are welded to make electrical connection. Do.
  • the configuration of the stator and the configuration of the magnetic circuit will be described with reference to FIG.
  • the magnetic circuit width 2d on the outer diameter side of the stator core 2 can be obtained by forming the outer peripheral side and the inner peripheral side in a circular arc shape, so that a uniform magnetic circuit width 2d can be obtained, from the magnetic circuit inlet 2a to the magnetic circuit outlet 2b.
  • a uniform magnetic circuit width 2d can be obtained, from the magnetic circuit inlet 2a to the magnetic circuit outlet 2b.
  • the winding area 2e since the magnetic circuit width 2d is optimized, there is no need to generate a useless portion in the shape of the stator core 2, so that the winding area 2e can be widened and the winding area is increased. As a result, it is possible to reduce the thickness of the motor and the characteristics of the motor and reduce the thickness of the magnetic circuit. As a result, the cost of the motor can be reduced.
  • the configuration of the conventional stator and the configuration of the magnetic circuit will be described with reference to FIG.
  • the magnetic circuit width 2d on the outer diameter side of the stator core 2 has an arc shape on the outer peripheral side and a straight line on the inner peripheral side, so that a uniform magnetic circuit width 2d cannot be obtained. Since the magnetic circuit width 2d near 2b is narrow and the magnetic circuit width 2d near the center of the stator core 2 is wide, it becomes impossible to obtain a smooth magnetic circuit flow 2c from the magnetic circuit inlet 2a toward the magnetic circuit outlet 2b. In addition to the deterioration of the motor characteristics, in the winding area 2e, a useless portion is generated in the shape of the stator core 2 and the winding area 2e is narrowed. As a result, the cost increases.
  • the configuration of the bobbin 3 will be described with reference to FIG. Since the inner diameter side shape for determining the magnetic circuit width 2d of the stator core 2 described above is set in an arc shape, the stator fitting surface 3b formed on the flange 3a of the bobbin 3 also has an arc shape accordingly. By configuring, it is possible to obtain a structure that enables a high space factor.
  • FIG. 4 (b) shows a front view of the bobbin 3
  • FIG. 4 (c) shows a cross-sectional view of the bobbin 3.
  • a flange 3a is provided on the outer diameter side of the winding surface 3d of the bobbin 3, and flange end surfaces 3h are formed at both ends thereof.
  • the flange end face 3h is positioned at the outermost diameter nozzle track 3g of the winding machine that winds the coil 4, and the coil 4 is wound while the winding machine nozzle moves in parallel.
  • the coil 4 By providing a taper surface 3e composed of an R surface from the track 3g to the flange 3a side from the inner diameter side of the bobbin 3 by one or two widths of the coil 4 without damaging the coil coating,
  • the coil 4 automatically slides on the taper surface of the bobbin 3 by using the winding tension, and it is possible to wind the portion outside the nozzle track of the winding machine.
  • the space factor of the coil 4 can be improved, and further, by providing a concave curved surface 3f having a radius equal to or larger than the radius of the coil 4 at the portion where the base portion of the flange 3a of the bobbin 3 and the tapered surface 3e are connected.
  • the effect of reducing the load applied to the flange 3a of the bobbin 3 by the effect of holding the coil 4 of the winding and the winding tension can be obtained. Furthermore, by providing a claw portion 3c for fixing the winding position on the side surface of the bobbin 3, it is possible to obtain an effect of enabling an aligned winding that does not collapse, and the surface of the winding portion of the bobbin 3 By forming 3d with R and making it a bowl-shaped R, the contact surface between the coil 4 and the bobbin 3 is increased, and the stress generated in the coil 4 during winding is reduced, so that the coating of the coil 4 is reduced. Prevent damage. Furthermore, by forming a ridge-shaped R on the end face of the bobbin 3, it is possible to obtain an effect of making the winding while maintaining the adhesion between the bobbin 3 and the coil 4 without increasing the tension during coil winding. Can do.
  • FIG. 5 (a) and FIG. 5 (b) show a state where the stator core 2 and the bobbin 3 are assembled.
  • the assembly is inserted so that two bobbins 3 are reversed from the axial direction of the stator core 2, and the winding structure is such that concentrated winding is performed while the coil 4 is hooked on the winding surface 3 d, the concave curved surface 3 f, and the claw portion 3 c of the bobbin 3. It has become.
  • Fig. 6 shows the state after winding.
  • the coil 4 is slid on the taper surface 3e of the bobbin 3 to perform winding from a portion outside the nozzle track of the winding machine, and winding is performed while the coil 4 is hooked on the claw portion 3c of the bobbin 3.
  • the magnetic circuit width 2d of the stator core 2 in an arc shape, useless space of the magnetic circuit width 2d is eliminated, and the fitting surface 3b of the stator core 2 and the bobbin 3 is also configured in an arc shape.
  • the winding space 2e can be utilized to the maximum extent.
  • the bobbin 3 with a winding surface 3d and a claw portion 3c composed of a tapered surface 3e, a concave curved surface 3f, and R, the damage to the coating of the coil 4 is suppressed, and the flange 3a of the bobbin 3 is attached to the bobbin 3. It is possible to reduce the load and perform winding with a high space factor and no winding from the part outside the nozzle track of the winding machine.
  • the present invention can be used as a magnetic circuit structure, bobbin structure, and coil winding structure of in-vehicle rotating electrical machines such as brushless motors and various generators used in electric power steering motors.
  • SYMBOLS 100 Motor for motor vehicles, 1 ... Housing, 2 ... Stator core, 3 ... Bobbin, 4 ... Coil, ... 5 ... Shaft, 6 ... Rotor core, 7 ... Magnet, 8 ... Magnet cover, 9 ... F bearing, 10 ... R bearing , 11 ... Preload spring, 12 ... Tomewa, 13 ... Cover motor, 14 ... Busbar mold, 15 ... Busbar terminal, 16 ... Busbar mold, 17 ... Busbar terminal, 18 ... Screw, 19 ... Three-phase output terminal, 4a ... Coil opening 2a ... magnetic circuit outlet, 2c ... magnetic circuit flow, 2d ... magnetic circuit width, 2e ... winding area, 3a ...

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

Abstract

L'invention concerne une machine électrique rotative embarquée (100) comprenant un enroulement concentré qui est utilisé comme une bobine (3) et une structure d'enroulement caractérisée de la manière suivante : les côtés de diamètre externe et interne du cœur de stator (2), qui constituent une largeur de circuit magnétique (2d) sur le côté de diamètre externe du stator (2), sont formés en formes d'arc pour que la dimension de largeur devienne uniforme. La bobine (3) a une surface d'ajustement de stator (3b) formée sur la bride (3a) de la bobine (3) dans une forme d'arc et adaptée au côté de diamètre interne du cœur de stator (2). Une surface effilée (3e), dont la hauteur s'abaisse graduellement depuis une surface d'extrémité de bride (3h) de la bobine (3) vers le côté de diamètre externe en prenant le côté de diamètre interne comme un point de base, est fournie sur une surface de partie d'enroulement (3d) formée dans une direction axiale de la bobine (3).
PCT/JP2014/079013 2013-12-20 2014-10-31 Machine électrique rotative Ceased WO2015093157A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015553415A JPWO2015093157A1 (ja) 2013-12-20 2014-10-31 回転電機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-263203 2013-12-20
JP2013263203 2013-12-20

Publications (1)

Publication Number Publication Date
WO2015093157A1 true WO2015093157A1 (fr) 2015-06-25

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ID=53402514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/079013 Ceased WO2015093157A1 (fr) 2013-12-20 2014-10-31 Machine électrique rotative

Country Status (2)

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JP (1) JPWO2015093157A1 (fr)
WO (1) WO2015093157A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017028876A (ja) * 2015-07-23 2017-02-02 日立オートモティブシステムズエンジニアリング株式会社 構造体一体型回転電機
EP3160018A1 (fr) * 2015-10-14 2017-04-26 Black & Decker Inc. Système de moteur sans balais pour outils électriques
JP2017106552A (ja) * 2015-12-10 2017-06-15 日立オートモティブシステムズエンジニアリング株式会社 電動パワーステアリングモータ
WO2019186615A1 (fr) * 2018-03-26 2019-10-03 三菱電機株式会社 Stator, moteur électrique, aspirateur électrique et dispositif de séchage des mains
JP2019187045A (ja) * 2018-04-06 2019-10-24 三菱重工サーマルシステムズ株式会社 ステータ、モータ、及び圧縮機
WO2021069182A1 (fr) * 2019-10-10 2021-04-15 Ebm-Papst St. Georgen Gmbh & Co. Kg Stator à espace d'enroulement optimisé
JP2021083216A (ja) * 2019-11-19 2021-05-27 ヤマハ発動機株式会社 回転電機、回転電機用固定子及び回転電機用ボビン
CN114287871A (zh) * 2022-03-09 2022-04-08 杭州康基医疗器械有限公司 具有高效散热结构的医用内窥镜荧光冷光源摄像系统
WO2024219120A1 (fr) * 2023-04-19 2024-10-24 パナソニックＩｐマネジメント株式会社 Stator, moteur électrique et procédé de fabrication de stator

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Publication number Priority date Publication date Assignee Title
JP2002272045A (ja) * 2001-03-14 2002-09-20 Moric Co Ltd 回転界磁型電気機器のステータ構造
JP2007325331A (ja) * 2006-05-30 2007-12-13 Aichi Elec Co 電動機
JP2008228471A (ja) * 2007-03-14 2008-09-25 Yaskawa Electric Corp インシュレータと固定子および電動機
JP2013021904A (ja) * 2011-06-13 2013-01-31 Nippon Densan Corp ステータユニットおよびモータ

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JP2001095187A (ja) * 1999-09-24 2001-04-06 Toyoda Mach Works Ltd モータ
JP3952290B2 (ja) * 2002-09-06 2007-08-01 ヤマハモーターエレクトロニクス株式会社 回転電気機器の電機子及びその巻線方法
JP2007006636A (ja) * 2005-06-24 2007-01-11 Daikin Ind Ltd 電機子用鉄心、電機子及びモータ
JP2008061443A (ja) * 2006-09-01 2008-03-13 Mitsuba Corp インシュレータ及び電動機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002272045A (ja) * 2001-03-14 2002-09-20 Moric Co Ltd 回転界磁型電気機器のステータ構造
JP2007325331A (ja) * 2006-05-30 2007-12-13 Aichi Elec Co 電動機
JP2008228471A (ja) * 2007-03-14 2008-09-25 Yaskawa Electric Corp インシュレータと固定子および電動機
JP2013021904A (ja) * 2011-06-13 2013-01-31 Nippon Densan Corp ステータユニットおよびモータ

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017028876A (ja) * 2015-07-23 2017-02-02 日立オートモティブシステムズエンジニアリング株式会社 構造体一体型回転電機
US11951603B2 (en) 2015-10-14 2024-04-09 Black & Decker Inc. Brushless motor system for power tools
EP3160018A1 (fr) * 2015-10-14 2017-04-26 Black & Decker Inc. Système de moteur sans balais pour outils électriques
US10328567B2 (en) 2015-10-14 2019-06-25 Black & Decker Inc. Brushless motor system for power tools
US10328566B2 (en) 2015-10-14 2019-06-25 Black & Decker Inc. Brushless motor system for power tools
US10500708B2 (en) 2015-10-14 2019-12-10 Black & Decker Inc. Power tool
US10786894B2 (en) 2015-10-14 2020-09-29 Black & Decker Inc. Brushless motor system for power tools
JP2017106552A (ja) * 2015-12-10 2017-06-15 日立オートモティブシステムズエンジニアリング株式会社 電動パワーステアリングモータ
WO2019186615A1 (fr) * 2018-03-26 2019-10-03 三菱電機株式会社 Stator, moteur électrique, aspirateur électrique et dispositif de séchage des mains
JP2019187045A (ja) * 2018-04-06 2019-10-24 三菱重工サーマルシステムズ株式会社 ステータ、モータ、及び圧縮機
JP7122145B2 (ja) 2018-04-06 2022-08-19 三菱重工サーマルシステムズ株式会社 ステータ、モータ、及び圧縮機
WO2021069182A1 (fr) * 2019-10-10 2021-04-15 Ebm-Papst St. Georgen Gmbh & Co. Kg Stator à espace d'enroulement optimisé
JP2021083216A (ja) * 2019-11-19 2021-05-27 ヤマハ発動機株式会社 回転電機、回転電機用固定子及び回転電機用ボビン
CN114287871A (zh) * 2022-03-09 2022-04-08 杭州康基医疗器械有限公司 具有高效散热结构的医用内窥镜荧光冷光源摄像系统
WO2024219120A1 (fr) * 2023-04-19 2024-10-24 パナソニックＩｐマネジメント株式会社 Stator, moteur électrique et procédé de fabrication de stator

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