WO2013186813A1 - モータ - Google Patents
モータ Download PDFInfo
- Publication number
- WO2013186813A1 WO2013186813A1 PCT/JP2012/003877 JP2012003877W WO2013186813A1 WO 2013186813 A1 WO2013186813 A1 WO 2013186813A1 JP 2012003877 W JP2012003877 W JP 2012003877W WO 2013186813 A1 WO2013186813 A1 WO 2013186813A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- resin mold
- mold body
- outer peripheral
- winding
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
Definitions
- the present invention relates to a motor used in a washing machine or the like.
- FIG. 7 is a cross-sectional view showing a schematic structure of a conventional washing machine.
- the conventional washing machine 40 includes a washing / dehydrating tub 41, a stirring blade 42 disposed on the bottom surface of the washing / dehydrating tub 41, and outside the washing / dehydrating tub 41 and the stirring wing 42. And a water tank 43 provided.
- a clutch device 44 is attached to the bottom surface of the water tank 43. By connecting the motor 45 and the clutch device 44 by the belt 46, the rotational force of the motor 45 is transmitted to the stirring blade 42 and the washing / dehydrating tub 41 via the clutch device 44.
- the clutch device 44 is switched to transmit the rotational force of the motor 45 to the stirring blade 42 during washing and to the washing and dewatering tank 41 during dehydration.
- FIG. 8 is a perspective view showing a schematic external shape of a motor used in a conventional washing machine.
- the outer shell of the motor 45 is formed of a resin mold body 54 and is fixed to the bottom surface of the water tank 43 shown in FIG. 7 via a fixing portion 55 integrally formed with the resin mold body 54.
- the resin mold body 54 is provided with a power supply terminal 56 for supplying power to the motor 45, and the motor rotation shaft 64 is rotated by supplying power to the power supply terminal 56.
- a pulley (not shown) is attached to the motor rotating shaft 64, and the rotational force is transmitted to the clutch device 44 via the belt 46 shown in FIG.
- the volume of the motor 45 increases, so the cost increases. Furthermore, since the dimensions of the motor 45 can be changed only within the limits of the dimensions of the bottom surface of the washing machine 40 shown in FIG. 7 and the dimensions of the clutch device 44 and the water tank 41, the performance of the motor 45 can be improved. There was a limit.
- the motor according to the present invention winds a winding in a radial direction through an insulator around a yoke of a stator core composed of a substantially annular yoke and teeth extending radially from the yoke to the inner peripheral side, and the stator core, the insulator, and the winding And a rotor having a rotor core rotatably held on the inner peripheral side of the stator via a gap, and a motor rotating shaft inserted in the center of the rotor core.
- Concave portions and convex portions extending in the axial direction were alternately formed on the outer peripheral surface of the resin mold body, and the concave portions were disposed on the outer peripheral surface of the resin mold body extending from the winding in the outer peripheral direction.
- heat dissipation from the winding as a heat source is increased while increasing the heat dissipation area by changing only the shape of the resin mold body without increasing the dimension of the motor in the axial direction and without changing the stator core. Therefore, it is possible to sufficiently secure the heat dissipation performance.
- FIG. 1 is a perspective view showing a schematic appearance of the washing machine motor according to Embodiment 1 of the present invention.
- FIG. 2 is a sectional view showing a schematic structure of the washing machine motor according to Embodiment 1 of the present invention.
- FIG. 3 is a diagram showing a winding form of the washing machine motor according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing a positional relationship between the recesses and the windings of the resin mold body of the washing machine motor according to Embodiment 1 of the present invention.
- FIG. 5 is a perspective view showing a schematic external shape of the washing machine motor according to Embodiment 2 of the present invention.
- FIG. 1 is a perspective view showing a schematic appearance of the washing machine motor according to Embodiment 1 of the present invention.
- FIG. 2 is a sectional view showing a schematic structure of the washing machine motor according to Embodiment 1 of the present invention.
- FIG. 3 is a diagram showing a winding
- FIG. 6 is a diagram showing a positional relationship between the recesses and windings of the resin mold body of the washing machine motor according to Embodiment 2 of the present invention.
- FIG. 7 is a sectional view showing a schematic structure of a conventional washing machine.
- FIG. 8 is a perspective view showing a schematic external shape of a conventional motor for a washing machine.
- FIG. 1 is a perspective view showing a schematic external shape of a washing machine motor according to Embodiment 1 of the present invention.
- the structure of the washing machine, the structure for fixing the motor to the washing machine, and the method of transmitting the rotational force are the same as those of the conventional washing machine shown in FIG.
- the outer shell of the motor 100 is formed of a resin mold body 14 and is integrally formed with a fixing portion 15 for fixing the motor 100 to the washing machine.
- the resin mold body 14 is provided with a power supply terminal 16 for supplying power to the motor 100, and the motor rotation shaft 24 rotates by supplying power to the power supply terminal 16.
- a pulley (not shown) is attached to the motor rotating shaft 24, and the rotational force is transmitted to the clutch device 44 via the belt 46 shown in FIG.
- outer peripheral surface concave portions 14 a and outer peripheral surface convex portions 14 b extending in the axial direction are alternately formed in order to improve heat dissipation performance.
- the outer peripheral surface concave portion 14a and the outer peripheral surface convex portion 14b can be formed over the entire circumference of the resin mold body 14, as shown in FIG.
- the number of terminals 16 can be adjusted according to the position and shape of the terminals 16.
- FIG. 2 is a cross-sectional view showing a schematic structure of the washing machine motor according to Embodiment 1 of the present invention.
- the motor 100 includes a stator 10 and a rotor 20 that is rotatably held with respect to the stator 10.
- the stator 10 includes a stator core 11 in which thin iron plates are stacked, a winding 13 wound around the stator core 11 in a radial direction, an insulator 12 that electrically insulates the stator core 11 and the winding 13, and the stator core 11, It comprises an insulator 12 and a resin mold body 14 in which the winding 13 is sealed with resin.
- the resin mold body 14 has a fixing portion 15 for fixing the motor 100 to the washing machine.
- the rotor 20 has a rotor core 21 in which thin iron plates are laminated and a secondary conductor 22.
- the rotor core 21 is rotatably held on the inner peripheral side of the stator 10 through a gap.
- a metal conductor such as aluminum is inserted into a rotor slot penetrating the rotor core 21 in the axial direction by die casting or the like.
- the secondary conductor 22 is electrically connected at both end faces of the rotor core 21.
- a motor rotating shaft 24 is inserted in the center of the rotor core 21, and a bearing 23 is attached to the motor rotating shaft 24.
- Bearing housings 31 and 32 are fixed to the resin mold body 14. By inserting and fixing the bearing 23 in the bearing housings 31 and 32, the rotor 20 is held rotatably with respect to the stator 10. Then, by supplying power to the winding wire 13, the motor rotating shaft 24 rotates.
- FIG. 3 is a diagram showing a winding form of the washing machine motor according to the first embodiment of the present invention.
- FIG. 3 shows a state in which the winding 13 is wound around the stator core 11 of FIG.
- the stator core 11 includes a substantially annular yoke 17 and teeth 18 that extend radially from the yoke 17 toward the inner peripheral side.
- the winding form of the motor 100 shown in FIG. 3 is a winding form generally called a toroidal winding system, and the winding 13 is wound in the radial direction around a yoke 17 that is a substantially annular portion of the stator core 11. ing.
- This type of winding motor has a feature that the coil end 13a can be made smaller than a winding motor generally called distributed winding.
- the coil end 13a does not generate a motor rotational force.
- the winding outer peripheral portion 13b located on the outer peripheral side of the stator core 11 of the winding 13 does not generate motor rotational force. That is, the coil end 13a and the winding outer peripheral portion 13b are portions that only act as a heat source due to copper loss.
- FIG. 4 is a diagram showing a positional relationship between the recesses and the windings of the resin mold body of the washing machine motor according to the first embodiment of the present invention.
- FIG. 4 shows the positional relationship between the winding 13 shown in FIG. 3 and the outer peripheral surface concave portion 14 a and the outer peripheral surface convex portion 14 b of the resin mold body 14.
- outer peripheral surface concave portions 14 a and outer peripheral surface convex portions 14 b extending in the axial direction are alternately formed on the outer peripheral surface of the resin mold body 14.
- the outer peripheral surface convex portion 14b By disposing the outer peripheral surface convex portion 14b, the surface area of the outer peripheral surface of the resin mold body 14 can be easily increased.
- the outer peripheral surface concave portion 14a in the portion extending in the outer peripheral direction from the winding outer peripheral portion 13b, the distance between the winding outer peripheral portion 13b as a heat generation source and the air layer where heat is dissipated is shortened. Can do. Thereby, it is possible to improve the heat dissipation from the outer peripheral surface of the resin mold body 14 without causing the heat generated from the winding outer peripheral portion 13b to spread to the resin mold body 14.
- the outer peripheral surface concave portion 14a and the outer peripheral surface convex portion 14b extending in the axial direction are alternately formed on the outer peripheral surface of the resin mold body 14, and the outer peripheral surface is formed on the portion extending in the outer peripheral direction from the winding outer peripheral portion 13b.
- a recess 14a is provided.
- FIG. 5 is a perspective view showing a schematic external shape of the washing machine motor according to Embodiment 2 of the present invention.
- the structure of the washing machine, the structure for fixing the motor to the washing machine, and the method of transmitting the rotational force are the same as those of the conventional washing machine shown in FIG. Is omitted.
- the outer shell of the motor 200 is formed of a resin mold body 14 and is integrally formed with a fixing portion 15 for fixing the motor 200 to the washing machine.
- the resin mold body 14 is provided with a power supply terminal 16 for supplying power to the motor 200, and the motor rotating shaft 24 rotates by supplying power to the power supply terminal 16.
- a pulley (not shown) is attached to the motor rotating shaft 24, and the rotational force is transmitted to the clutch device 44 via the belt 46 shown in FIG.
- outer peripheral surface concave portions 14 a and outer peripheral surface convex portions 14 b extending in the axial direction are alternately formed in order to improve heat dissipation performance.
- end surface concave portions 14c and end surface convex portions 14d extending in the radial direction are alternately formed on the end surface in the axial direction of the resin mold body 14.
- the end surface recesses 14c and the end surface protrusions 14d are preferably formed over the entire circumference of the end surface in the axial direction of the resin mold body 14, but the number of the end surface recesses 14c and the end surface protrusions 14d may be reduced.
- the structure and winding form of the motor 200 of the second embodiment shown in FIG. 5 are the same as those of the motor 100 of the first embodiment shown in FIGS.
- FIG. 6 is a diagram showing the positional relationship between the recesses and the windings of the resin mold body of the washing machine motor according to Embodiment 2 of the present invention.
- FIG. 6 shows the positional relationship between the outer peripheral surface concave portion 14 a, the outer peripheral surface convex portion 14 b, the end surface concave portion 14 c, the end surface convex portion 14 d of the resin mold body 14 and the winding 13.
- outer peripheral surface concave portions 14 a and outer peripheral surface convex portions 14 b extending in the axial direction are alternately formed on the outer peripheral surface of the resin mold body 14, and the axial end surface of the resin mold body 14 has a diameter on the end surface.
- End surface concave portions 14c and end surface convex portions 14d extending in the direction are alternately formed.
- the arrangement and effects of the outer peripheral surface concave portion 14a and the outer peripheral surface convex portion 14b are the same as those shown in the first embodiment.
- the surface area on the end surface of the resin mold body 14 can also increase easily by arrange
- the heat conductivity of the resin material normally used is about 1.1 W / m ⁇ K, but if it is 1.4 W / m ⁇ K or more, the outer periphery of the winding
- the thermal conductivity between 13b and the outer peripheral surface recess 14a and between the coil end 13a and the end surface recess 14c is improved.
- the outer peripheral surface concave portion 14a and the outer peripheral surface convex portion 14b extending in the axial direction are alternately formed on the outer peripheral surface of the resin mold body 14, and the outer peripheral surface is formed on the portion extending in the outer peripheral direction from the winding outer peripheral portion 13b.
- a recess 14a is provided.
- end surface recesses 14c and end surface protrusions 14d extending in the radial direction are alternately formed on the end surface in the axial direction of the resin mold body 14, and the end surface recesses 14c are disposed in portions extending in the axial direction from the coil ends 13a.
- the heat dissipation performance can be further improved with a simple structure and low cost without accompanying an excessive increase in the size of the motor.
- the thermal conductivity of the resin material constituting the resin mold body 14 is 1.4 W / m ⁇ K or more, the coil end 13a and the end surface recess 14c are provided between the winding outer periphery 13b and the outer periphery recess 14a. The thermal conductivity between the two is improved. As a result, it is further difficult to generate heat inside the resin mold body 14, and the heat dissipation performance can be improved.
- the structure is shown as an inner rotor type motor in which a rotor is disposed on the inner periphery of the stator.
- an outer rotor type in which a rotor is disposed on the outer periphery of the stator, or a gap in the axial direction from the stator.
- the same effect can be obtained by disposing the above-described recess in a portion that does not interfere with the rotor.
- the motor according to the present invention winds the winding in the radial direction through the insulator around the yoke of the stator core including the substantially annular yoke and the teeth extending radially from the yoke to the inner peripheral side.
- a stator in which an insulator and a winding are molded by a resin mold body, a rotor core that is rotatably held through a gap on the inner peripheral side of the stator, and a motor rotating shaft that is inserted in the center of the rotor core.
- a rotor Concave portions and convex portions extending in the axial direction are alternately formed on the outer peripheral surface of the resin mold body, and the concave portions are disposed on the outer peripheral surface of the resin mold body extending from the winding in the outer peripheral direction.
- heat dissipation from the winding as a heat source is increased while increasing the heat dissipation area by changing only the shape of the resin mold body without increasing the dimension of the motor in the axial direction and without changing the stator core. Therefore, the heat dissipation performance can be improved.
- recesses and protrusions extending in the radial direction are alternately formed on the axial end surface of the resin mold body, and the recesses are formed on the axial end surface of the resin mold body extending in the axial direction from the winding. Is disposed.
- the thermal conductivity of the resin material constituting the resin mold body is set to 1.4 W / m ⁇ K or more.
- the thermal conductivity between the winding and the concave portion of the resin mold body is improved compared to the thermal conductivity of the resin material that is normally used, and it is difficult for heat to flow inside the resin mold body. Therefore, the motor performance can be improved.
- the motor according to the present invention is typified by a washing machine because it can improve the heat dissipation performance without excessively increasing the size of the motor or increasing the cost, and can provide a small and high-performance motor. Suitable for applications that require small size and high performance in home appliances.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
図1は、本発明の実施の形態1における洗濯機用モータの概略外観形状を示す斜視図である。尚、洗濯機の構造や、モータの洗濯機への固定構造、回転力の伝達方法は図7に示した従来の洗濯機と同様であるため、ここでは説明を省略する。
図5は、本発明の実施の形態2における洗濯機用モータの概略外観形状を示す斜視図である。尚、実施の形態1と同様に、洗濯機の構造や、モータの洗濯機への固定構造、回転力の伝達方法は、図7に示した従来の洗濯機と同様であるため、ここでは説明を省略する。
11 ステータコア
12 絶縁物
13 巻線
13a コイルエンド
13b 巻線外周部
14 樹脂モールド体
14a 外周面凹部
14b 外周面凸部
14c 端面凹部
14d 端面凸部
15 固定部
16 電源端子
17 ヨーク
18 ティース
20 ロータ
21 ロータコア
22 二次導体
23 軸受
24 モータ回転軸
31,32 軸受ハウジング
100,200 モータ
Claims (3)
- 略環状のヨークと前記ヨークから内周側へ径方向に延びるティースとからなるステータコアの前記ヨークに絶縁物を介して径方向に巻線を巻回し、前記ステータコア、前記絶縁物、前記巻線を樹脂モールド体によってモールド成形したステータと、
前記ステータの内周側に空隙を介して回転自在に保持されたロータコアと、前記ロータコアの中央に挿入されたモータ回転軸とを具備したロータと、
を有するモータであって、
前記樹脂モールド体における外周面に、軸方向に延びる凹部と凸部とを交互に形成し、前記巻線から外周方向に伸延した部分の前記樹脂モールド体の外周面に前記凹部を配設したことを特徴としたモータ。 - 前記樹脂モールド体における軸方向端面に、径方向に延びる凹部と凸部とを交互に形成し、前記巻線から軸方向に伸延した部分の前記樹脂モールド体の軸方向端面に前記凹部を配設したことを特徴とした請求項1に記載のモータ。
- 前記樹脂モールド体を構成する樹脂材料の熱伝導率が1.4W/m・K以上であることを特徴とした請求項1あるいは請求項2のいずれか1項に記載のモータ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/003877 WO2013186813A1 (ja) | 2012-06-14 | 2012-06-14 | モータ |
JP2012548256A JP5288064B1 (ja) | 2012-06-14 | 2012-06-14 | モータ |
EP12878677.9A EP2863515B1 (en) | 2012-06-14 | 2012-06-14 | Motor |
US14/406,006 US9698648B2 (en) | 2012-06-14 | 2012-06-14 | Motor |
CN201280073904.6A CN104428978B (zh) | 2012-06-14 | 2012-06-14 | 电动机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/003877 WO2013186813A1 (ja) | 2012-06-14 | 2012-06-14 | モータ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013186813A1 true WO2013186813A1 (ja) | 2013-12-19 |
Family
ID=49274081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/003877 WO2013186813A1 (ja) | 2012-06-14 | 2012-06-14 | モータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US9698648B2 (ja) |
EP (1) | EP2863515B1 (ja) |
JP (1) | JP5288064B1 (ja) |
CN (1) | CN104428978B (ja) |
WO (1) | WO2013186813A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021093824A (ja) * | 2019-12-10 | 2021-06-17 | 日本電産トーソク株式会社 | モータ、および電動ポンプ |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103545969A (zh) * | 2013-11-06 | 2014-01-29 | 宁夏新航能源环境科技有限公司 | 一种节能电机 |
KR101707142B1 (ko) * | 2015-05-22 | 2017-02-15 | 뉴모텍(주) | 하우징 고정 구조와 접지 구조가 개선된 모터 |
EP3573219B1 (en) * | 2017-01-20 | 2021-11-24 | Mitsubishi Electric Corporation | Electric motor, air conditioner, and method for manufacturing electric motor |
DE102017216631A1 (de) * | 2017-09-20 | 2019-03-21 | Continental Automotive Gmbh | Elektrische Maschine |
JP2019103201A (ja) * | 2017-11-30 | 2019-06-24 | 日立グローバルライフソリューションズ株式会社 | スロットレス型電動機及び、それを用いた電動送風機や電気掃除機 |
CN116134707A (zh) * | 2020-07-22 | 2023-05-16 | 松下知识产权经营株式会社 | 电动机 |
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2012
- 2012-06-14 CN CN201280073904.6A patent/CN104428978B/zh active Active
- 2012-06-14 JP JP2012548256A patent/JP5288064B1/ja active Active
- 2012-06-14 US US14/406,006 patent/US9698648B2/en not_active Expired - Fee Related
- 2012-06-14 EP EP12878677.9A patent/EP2863515B1/en not_active Not-in-force
- 2012-06-14 WO PCT/JP2012/003877 patent/WO2013186813A1/ja active Application Filing
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JP2021093824A (ja) * | 2019-12-10 | 2021-06-17 | 日本電産トーソク株式会社 | モータ、および電動ポンプ |
JP7424021B2 (ja) | 2019-12-10 | 2024-01-30 | ニデックパワートレインシステムズ株式会社 | モータ、および電動ポンプ |
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Publication number | Publication date |
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CN104428978B (zh) | 2017-06-23 |
EP2863515A4 (en) | 2015-09-23 |
JP5288064B1 (ja) | 2013-09-11 |
US9698648B2 (en) | 2017-07-04 |
EP2863515A1 (en) | 2015-04-22 |
EP2863515B1 (en) | 2016-09-14 |
JPWO2013186813A1 (ja) | 2016-02-01 |
CN104428978A (zh) | 2015-03-18 |
US20150155755A1 (en) | 2015-06-04 |
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