WO2014006958A1 - 電動モータ - Google Patents
電動モータ Download PDFInfo
- Publication number
- WO2014006958A1 WO2014006958A1 PCT/JP2013/061895 JP2013061895W WO2014006958A1 WO 2014006958 A1 WO2014006958 A1 WO 2014006958A1 JP 2013061895 W JP2013061895 W JP 2013061895W WO 2014006958 A1 WO2014006958 A1 WO 2014006958A1
- Authority
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- WIPO (PCT)
- Prior art keywords
- teeth
- electric motor
- coil winding
- coil
- winding
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
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- 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
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the present invention relates to an electric motor that can be miniaturized by reducing the axial dimension of a stator.
- a series winding motor is used as an electric motor for a compressor applied to a refrigerant compressor of a vehicle-mounted air conditioner.
- a coil bobbin having insulation properties is installed on a tooth portion on which coil windings are wound at both ends of a stator core generally formed by laminating a required number of stamped and formed electromagnetic steel plates, A winding is wound (see, for example, Patent Document 1).
- a stator iron core a plurality of divided iron cores a in which a tooth portion and a yoke portion are integrally formed, and a plurality of yoke portions formed between the divided iron cores a are formed.
- a stator of a motor in which a coil winding is wound in series without attaching a winding guide (coil bobbin) to a tooth portion of the divided core body a is disclosed. ing.
- Patent Document 1 in the case of a motor in which coil bobbins are installed at both end portions of a stator core, the coil bobbin itself has a thickness dimension, and therefore, the stator corresponds to the thickness dimension.
- the axial dimension has become large, which is one of the factors that cause the motor to become large. For this reason, the motor having the coil bobbin has not been able to sufficiently satisfy the requirement as an electric motor for a compressor for which improvement in mountability to a vehicle is required by downsizing.
- Patent Document 2 in the coil bobbin-less type, it is considered that the axial dimension of the stator can be reduced by the thickness dimension of the coil bobbin, and the motor can be miniaturized, but it is simply Only by coil bobbin-lessizing, the coil winding is formed by the edges formed on the shoulders on both sides in the circumferential direction of the tooth portion for winding the coil winding of the stator core formed by laminating the punched and formed electromagnetic steel plates.
- defects such as film damage and disconnection may occur during winding, and the quality of the coil winding may not be ensured.
- An object of the present invention is to provide an electric motor capable of winding a winding.
- the electric motor of the present invention adopts the following means. That is, the electric motor according to the first aspect of the present invention comprises a stator core formed by laminating a required number of annular electromagnetic steel plates having a plurality of teeth portions for winding coil windings on the inner peripheral side.
- the electric motor the circumferential width of the teeth of the plurality of electromagnetic steel plates stacked on both ends of the stator core is gradually narrowed toward the end, and the electromagnetic steel plates are stacked.
- the coil winding is directly wound on the tooth portion in which the shoulder portions on both sides in the circumferential direction of the tooth portion to be cut are shoulder portions that smoothly and gradually change in width toward the end portion. ing.
- the circumferential widths of the teeth of the plurality of electromagnetic steel sheets stacked on both ends of the stator core of the laminated structure gradually increase toward the end.
- the shoulder portions on both sides in the circumferential direction of the teeth portion formed by the lamination of the magnetic steel sheets are shoulder portions which smoothly and gradually change in width toward the end portions Since the coil winding is directly wound, the coil bobbins are not formed, and even if the coil winding is wound directly on the teeth of the electromagnetic steel sheet, the shoulders on both sides in the circumferential direction of the teeth are stepped toward the end The shoulders that smoothly change in a narrow width and shape along the winding shape of the coil winding prevents damage to the coating or breakage of the coil winding due to the shoulder edge of the teeth portion.
- the axial dimension of the stator can be reduced by an amount corresponding to the thickness of the coil bobbin, and the motor can be thinned.
- the coil bobbin-less configuration can simplify the structure and reduce the cost, improve the efficiency by reducing the wire length of the coil winding, and reduce the contact reliability between the coil winding and the stator core. Improvements can be made.
- the coil winding is wound via a thin insulating member having a shape along the shoulder portion with respect to the tooth portion. It is characterized by
- the coil winding since the coil winding is wound via the thin insulating member having a shape along the shoulder portion with respect to the teeth portion, the coil bobbinless formation There is a concern that the insulation property between the winding and the stator core may be reduced, and even if the amount of reduction exceeds the specified value, the coil winding may be interposed with a thin insulating member having a shape along the shoulder. It can respond by winding up. Therefore, it is possible to receive the above-described effect of the coil bobbin-less implementation.
- the insulating member has an ear that can be deformed along the shape of the shoulder of the tooth. I assume.
- the coil winding is interposed with the insulating member. Even in the case of winding the coil, winding the coil winding around the teeth via the insulating member while deforming the ear portion provided on the insulating member along the shape of the shoulder of the teeth. Can. Therefore, regardless of the presence or absence of the insulating member, the coil winding can be wound while securing the quality along the shoulder shape of the teeth portion.
- the insulating member is formed of a flexible insulating sheet having a shape similar to the planar shape of the electromagnetic steel sheet. It is characterized by being.
- the insulating member is formed of the flexible insulating sheet having a shape similar to the planar shape of the magnetic steel sheet, the insulating member is interposed.
- an insulating sheet having a similar shape to the electromagnetic steel sheet is laminated on both ends of the stator core, and the coil winding is wound thereon, thereby providing flexible insulation.
- the coil winding can be wound along the shoulder shape of the teeth while bending the sheet along the shoulders of the teeth. Therefore, the coil winding can be reliably wound while securing the quality without impairing the workability of the winding operation of the coil winding.
- the shoulders on both sides in the circumferential direction of the teeth smoothly narrow in steps toward the end. Since it is considered as a changing shoulder and has a shape along the winding shape of the coil winding, film damage or disconnection of the coil winding due to the shoulder edge of the tooth portion is prevented, and the quality is secured. While the coil winding can be wound. Therefore, the axial dimension of the stator can be reduced by the thickness of the coil bobbin and the motor can be thinned.
- the coil bobbin-less configuration can simplify the structure and reduce the cost, improve the efficiency by reducing the wire length of the coil winding, and reduce the contact reliability between the coil winding and the stator core. Improvements can be made.
- FIG. 4 is a cross-sectional equivalent view of AA of FIG. 3; It is a partial top view of the insulation sheet used when there is concern about insufficient insulation. It is the schematic diagram which compared the structure of the case (A) which used the coil bobbin, and the case (B) where it was set as a coil bobbin less with change of a teeth part.
- FIG. 1 is a plan view of the electric motor according to an embodiment of the present invention in which the coil winding is omitted.
- the electric motor 1 has a stator 2 formed by winding a coil winding (not shown) around the teeth portion 4 of an annular stator core 3, and a predetermined gap in the stator 2. It comprises a cylindrical rotor 10 rotatably inserted.
- the rotor 10 has a cylindrical rotor core 11 configured by laminating a required number of thin stamped and formed electromagnetic steel plates, and a through hole 12 for fitting a rotating shaft (not shown) in the center thereof. Are drilled in the axial direction.
- the rotor core 11 is provided with a number of magnet embedding holes 13 corresponding to the number of motor poles (6 poles in this embodiment) so as to surround the through holes 12 along the outer peripheral portion thereof.
- the permanent magnet 14 is embedded in the hole 13 of FIG.
- the stator core 3 constituting the stator 2 is configured by laminating a required number of annularly punched and formed electromagnetic steel plates 5 and is a tooth portion for winding a coil winding on the inner peripheral side thereof. 4 is provided.
- the teeth portions 4 are provided at nine positions at substantially equal intervals on the inner peripheral side of the stator core 3, and the slots 6 are punched between the teeth portions 4 to form coils at the teeth portions 4. Winding is made possible.
- three-phase coil windings of U-phase, V-phase and W-phase are wound at three places sequentially.
- the teeth portions 4 have circumferential widths B of the teeth portions 4 of the plurality of electromagnetic steel plates 5 stacked on both ends of the stator core 3 respectively directed to the end portions.
- the punched parts are formed so that the width B gradually narrows, and when they are laminated, the shoulders 7 formed on both sides in the circumferential direction of the teeth 4 on both ends of the stator core 3 are directed toward the ends respectively. It is configured to form a shoulder 7 which gradually changes in a narrow and smooth manner.
- the shoulders 7 formed on both sides in the circumferential direction of the teeth 4 on which the coil winding of the stator core 3 is wound are stepped toward each end on both end sides of the stator core 3 It is configured to form a shoulder 7 which changes smoothly and narrowly.
- the shoulder portion 7 of the tooth portion 4 has a smooth shape along the winding shape of the coil winding. . Therefore, the coil winding is not damaged or broken by the shoulder edge of the tooth portion 4, and the coil winding can be wound while securing the quality.
- the axial dimension of the stator 2 is made smaller by an amount corresponding to the thickness of the coil bobbin, which is generally a resin molded product and the center portion is thicker than the both side portions, to make the motor thinner.
- the structure can be simplified and the cost can be reduced by the coil bobbin-less implementation, and the efficiency is improved by the reduction of the wire length of the coil winding, and the reliability due to the contact relaxation between the coil winding and the stator core 3 Can be improved.
- FIG. 1 The schematic diagram which compared the structure of the case (A) which used a coil bobbin, and the case where it was set as a coil bobbin less (B) with the change of the teeth part 4 is shown in FIG.
- the axial dimension L of the stator 2 including the coil winding is increased by the thickness of the coil bobbin 20.
- the shoulders 7 on both sides in the circumferential direction of the tooth portion 4 are shoulders 7 which smoothly change in a narrow width stepwise in the direction of the end side, and the coil winding is made straight and the coil bobbin 20 is omitted.
- the dimension L can be shortened by at least the thickness of the coil bobbin 20. Therefore, effects such as thinning of the motor, simplification of the configuration, cost reduction, and improvement of the efficiency by reduction of the winding length can be expected.
- a thin insulating member 8 may be interposed at both ends of the tooth portion 4.
- an insulating sheet, an insulating film, or a molded product by vacuum molding, injection molding or the like can be used.
- the thickness of the insulating member 8 be at least 1 mm or less.
- FIG. 5 shows an example in which the insulating member 8 is a flexible insulating sheet having a similar planar shape to the electromagnetic steel plate 5 punched and formed in an annular shape.
- this insulating sheet 8 it is used by being laminated on both end faces of the stator core 3, but corresponding to the shoulders 7 so as to be deformed along the smooth shoulders 7 on both sides in the circumferential direction of the teeth portion 4
- the ear portion 9 having a suitable length is provided at the position where it is located.
- the coil winding is wound with a thin insulating member 8 having a shape along the shoulder. It is possible to cope by. Even in this case, by using the insulating member 8 having a thickness of 1 mm or less, it is possible to receive the above-described effect of the coil bobbinless.
- the insulating member (insulation sheet) 8 having the ear portion 9 which can be deformed along the shape of the smooth shoulder portion 7 of the tooth portion 4, the ear portion 9 is formed into the shape of the shoulder portion 7 of the tooth portion 4
- a coil winding can be wound on the teeth portion 4 via the insulating member 8 while being deformed along the side walls. Therefore, regardless of the presence or absence of the insulating member 8, the coil winding can be wound while securing the quality along the shape of the shoulder portion 7.
- the insulating member 8 is formed of an insulating sheet having flexibility similar to the planar shape of the electromagnetic steel sheet 5 and the coil winding is wound with the insulating member (insulation sheet) 8 interposed, electromagnetic Insulating sheets similar in shape to the steel plate 5 are laminated on both ends of the stator core 3, and coil windings are wound thereon.
- the coil winding can be wound along the shoulder shape of the tooth portion 4 while causing the flexible insulating sheet 8 to be bent and deformed along the shape of the shoulder portion 7 of the tooth portion 4 it can. Therefore, the coil winding can be wound while securing the quality without impairing the workability of the winding operation of the coil winding.
- the present invention is not limited to the invention according to the above-described embodiment, and appropriate modifications can be made without departing from the scope of the invention.
- the number of electromagnetic steel plates 5 for gradually narrowing the circumferential width B of the teeth 5 is not particularly defined, but the number of electromagnetic steel plates 5 is the size of the circumferential width of the teeth 5
- the thickness of the electromagnetic steel sheet 5, the thickness of the coil winding, and the like may be taken into consideration according to how smooth the shoulders 7 are, and the number of sheets is the size of the motor, the output, and other characteristics. Changed by
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
すなわち、本発明の第1の態様にかかる電動モータは、内周側にコイル巻線を巻装する複数のティース部を有する環状の電磁鋼板を所要枚数積層して構成した固定子鉄心を備えている電動モータにおいて、前記固定子鉄心の両端側に積層される複数枚の前記電磁鋼板における前記ティース部の周方向幅が、各々端部側に向って漸次狭くされ、その電磁鋼板の積層により形成される前記ティース部の周方向両側の肩部が、それぞれ端部に向って段階的に幅狭に滑らかに変化する肩部とされているティース部に対して、前記コイル巻線が直巻きされている。
図1には、本発明の一実施形態に係る電動モータのコイル巻線を省いた状態の平面図が示されている。
電動モータ1は、環状をなす固定子鉄心3のティース部4に図示省略したコイル巻線が巻装されることにより構成される固定子2と、固定子2の内部に所定の隙間を介して回転自在に介装される円筒状の回転子10とから構成される。
ティース部4Aに対して、コイルボビン20を介装してコイル巻線を巻装した場合、コイルボビン20の厚さ相当分だけ、コイル巻線を含む固定子2の軸方向寸法Lが大きくなる。これに対し、ティース部4の周方向両側の肩部7を、端部側に向って段階的に幅狭に滑らかに変化する肩部7とし、コイル巻線を直巻きにしてコイルボビン20を省くことにより、少なくともコイルボビン20の厚さ相当分だけ、寸法Lを短縮化することができ。このため、モータの薄型化、構成の簡素化、低コスト化、巻線長の低減による効率の向上等の効果を期待することができる。
3 固定子鉄心
4 ティース部
5 電磁鋼板
7 肩部
8 絶縁部材(絶縁シート)
9 耳部
B ティース部の周方向幅
Claims (4)
- 内周側にコイル巻線を巻装する複数のティース部を有する環状の電磁鋼板を所要枚数積層して構成した固定子鉄心を備えている電動モータにおいて、
前記固定子鉄心の両端側に積層される複数枚の前記電磁鋼板における前記ティース部の周方向幅が、各々端部側に向って漸次狭くされ、
その電磁鋼板の積層により形成される前記ティース部の周方向両側の肩部が、それぞれ端部に向って段階的に幅狭に滑らかに変化する肩部とされているティース部に対して、前記コイル巻線が直巻きされている電動モータ。 - 前記コイル巻線は、前記ティース部に対して前記肩部に沿った形状の薄い絶縁部材を介して巻装されている請求項1に記載の電動モータ。
- 前記絶縁部材は、前記ティース部の前記肩部形状に沿って変形可能な耳部を有している請求項2に記載の電動モータ。
- 前記絶縁部材は、前記電磁鋼板の平面形状と相似形状とされた可撓性を有する絶縁シートにより構成されている請求項2または3に記載の電動モータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380021267.2A CN104247212A (zh) | 2012-07-04 | 2013-04-23 | 电动马达 |
US14/394,776 US10547224B2 (en) | 2012-07-04 | 2013-04-23 | Electric motor with stator having step-shaped stator teeth |
DE201311003354 DE112013003354T5 (de) | 2012-07-04 | 2013-04-23 | Elektrischer Motor |
US16/214,540 US10547225B2 (en) | 2012-07-04 | 2018-12-10 | Method for producing an electric motor with stator having step-shaped stator teeth |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012150640A JP2014014231A (ja) | 2012-07-04 | 2012-07-04 | 電動モータ |
JP2012-150640 | 2012-07-04 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/394,776 A-371-Of-International US10547224B2 (en) | 2012-07-04 | 2013-04-23 | Electric motor with stator having step-shaped stator teeth |
US16/214,540 Continuation US10547225B2 (en) | 2012-07-04 | 2018-12-10 | Method for producing an electric motor with stator having step-shaped stator teeth |
Publications (1)
Publication Number | Publication Date |
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WO2014006958A1 true WO2014006958A1 (ja) | 2014-01-09 |
Family
ID=49881723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2013/061895 WO2014006958A1 (ja) | 2012-07-04 | 2013-04-23 | 電動モータ |
Country Status (5)
Country | Link |
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US (2) | US10547224B2 (ja) |
JP (1) | JP2014014231A (ja) |
CN (2) | CN109904947A (ja) |
DE (1) | DE112013003354T5 (ja) |
WO (1) | WO2014006958A1 (ja) |
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US11705794B2 (en) | 2017-02-13 | 2023-07-18 | Mitsui High-Tec, Inc. | Stacked stator core |
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Also Published As
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DE112013003354T5 (de) | 2015-03-19 |
CN104247212A (zh) | 2014-12-24 |
US10547224B2 (en) | 2020-01-28 |
JP2014014231A (ja) | 2014-01-23 |
US10547225B2 (en) | 2020-01-28 |
US20150069878A1 (en) | 2015-03-12 |
US20190181711A1 (en) | 2019-06-13 |
CN109904947A (zh) | 2019-06-18 |
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