CN112956116A - Motor for electric compressor and electric compressor including the same - Google Patents
Motor for electric compressor and electric compressor including the same Download PDFInfo
- Publication number
- CN112956116A CN112956116A CN201980073143.6A CN201980073143A CN112956116A CN 112956116 A CN112956116 A CN 112956116A CN 201980073143 A CN201980073143 A CN 201980073143A CN 112956116 A CN112956116 A CN 112956116A
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- China
- Prior art keywords
- motor
- electric compressor
- insulator
- winding
- tooth
- 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.)
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Links
- 239000012212 insulator Substances 0.000 claims abstract description 70
- 238000004804 winding Methods 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011810 insulating material Substances 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 229920003002 synthetic resin Polymers 0.000 claims description 11
- 239000000057 synthetic resin Substances 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 8
- 230000007547 defect Effects 0.000 abstract description 17
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 230000005684 electric field Effects 0.000 description 6
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 6
- 239000011112 polyethylene naphthalate Substances 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 230000002950 deficient Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000004210 tooth component Anatomy 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Provided is a motor for an electric compressor, which can effectively inhibit or eliminate dielectric breakdown caused by defects of an insulating material for insulating a winding from an iron core. A motor of an electric compressor is formed by arranging an insulator (33) between a winding (23) and an iron core (22), and a resin film (36) composed of a plurality of layers is arranged on an inner wall (34A) of the insulator (33). The resin film (36) is bonded to the inner wall (34A) of the insulating member (33) by an adhesive or ultrasonic waves having a dielectric constant lower than that of the resin film (36).
Description
Technical Field
The present invention relates to a motor for an electric compressor in which an insulator is disposed between a winding and an iron core of a stator, and an electric compressor including the motor for an electric compressor.
Background
Conventionally, a motor for driving a compression element of an electric compressor is composed of a stator and a rotor rotating inside the stator. The stator is composed of an iron core formed by laminating electromagnetic steel plates, a plurality of pole teeth protruding from the iron core in the radial direction, and a winding wound around each pole tooth, but since the iron core and the winding need to be insulated from each other, an insulating material made of insulating resin is disposed between the iron core and the winding (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2016-82624
Disclosure of Invention
Technical problem to be solved by the invention
Here, the insulator is generally formed by injection molding, but since it has a shape that is long in the axial direction of the motor, the gate position during molding is often both ends in the longitudinal direction. That is, the resin injected from each gate merges at an intermediate portion between the gates, and therefore, the thickness at the above-described merging portion is likely to be thinned.
When a thin portion or a crack is generated in the insulator, an electric field is concentrated in such a defective portion when a high voltage is applied to the winding. This results in that the thinner the thickness t of the insulating member is, the higher the discharge start voltage V of the following formula (I) is. Therefore, there is a problem that the dielectric breakdown of the insulating material is caused by the occurrence of minute discharge due to the repeated application of voltage.
V＝√2×163(t/ε)0.46Formula (I)
Where V is the discharge start voltage, t is the thickness of the insulator, and ε is the specific dielectric constant of the insulator.
The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a motor for an electric compressor capable of effectively suppressing or eliminating the occurrence of dielectric breakdown due to a defect of an insulator insulating between a winding and an iron core, and an electric compressor including the motor for an electric compressor.
Technical scheme for solving technical problem
In order to solve the above-described problems, a motor for an electric compressor according to the invention of claim 1 is configured such that an insulator is disposed between a winding of a stator and an iron core, and is characterized in that a resin film composed of a plurality of layers is disposed on an inner wall of the insulator.
The motor for an electric compressor according to the invention of claim 2 is characterized in that the resin film is bonded to the inner wall of the insulator by an adhesive or ultrasonic waves having a dielectric constant lower than that of the resin film.
The motor for an electric compressor according to the invention of claim 3 is, in the invention of claim 1, characterized in that the insulator is formed by injection molding of a synthetic resin, and the resin film is disposed on an inner wall of the insulator by insert molding.
The motor for an electric compressor according to the invention of claim 4 is formed by disposing an insulator between a winding of a stator and an iron core, and is characterized in that an insulating tape is wound around the iron core on which the insulator is disposed a plurality of times.
The motor for an electric compressor according to the invention of claim 5 is characterized in that the insulator is formed by injection molding of a synthetic resin in each of the inventions described above.
The motor for an electric compressor according to claim 6 is characterized in that the core of the stator is composed of a tooth member and a yoke member, wherein the tips of adjacent teeth of the tooth member are continuous, the yoke member is coupled to the outside of the tooth member to form a magnetic path, and the winding is wound around the tooth member by attaching an insulator around which the winding is wound to the tooth member from the outside, and the insulator is disposed between the winding and the tooth.
The electric compressor according to the invention of claim 7 is characterized in that the motor and the compression element according to each of the above inventions are housed in a container.
Effects of the invention
According to the invention of claim 1, in the motor for an electric compressor in which the insulator is disposed between the winding and the core of the stator, the resin films formed of a plurality of layers are disposed on the inner wall of the insulator, and therefore, even if a defect occurs in the insulator formed by injection molding of a synthetic resin as in the invention of claim 5, for example, by disposing the resin films of a plurality of layers having a low probability of overlapping defects on themselves on the inner wall of the insulator, it is possible to avoid concentration of an electric field on a defective portion of the insulator, and it is possible to eliminate a problem that dielectric breakdown of the insulator occurs.
Thus, the probability of failure of the motor for the electric compressor is reduced, so that the disposal cost can be increased, and the thickness dimension of the insulator required for compensating the conventional defect can be reduced, so that the production cost and the dimension can be reduced.
In this case, for example, as in the invention of claim 2, the resin film is bonded to the inner wall of the insulating material by using an adhesive or ultrasonic waves having a dielectric constant lower than that of the resin film, whereby the assembly work can be facilitated.
Further, for example, when the insulating material is formed by injection molding of a synthetic resin as in the invention of claim 3, if the resin film is disposed on the inner wall of the insulating material by insert molding, the resin film can be disposed on the surface or the inner wall of the insulating material simultaneously with the molding of the insulating material, and therefore, productivity is further improved.
Further, according to the invention of claim 4, in the motor for an electric compressor in which the insulator is disposed between the winding and the core of the stator, since the insulating tape is wound and attached to the core in which the insulator is disposed a plurality of times, even if a defect occurs in the insulator as described above, the probability of overlapping the defect itself is reduced by winding and attaching the insulating tape a plurality of times to the core in which the insulator is disposed, and it is possible to avoid concentration of an electric field at the defective portion of the insulator, and to eliminate the trouble of dielectric breakdown of the insulator in advance.
Thus, the probability of failure of the motor for the electric compressor is reduced, so that the disposal cost can be increased, and the thickness dimension of the insulator required for compensating the conventional defect can be reduced, so that the production cost and the dimension can be reduced.
In particular, as in the invention according to claim 6, the core of the stator is configured by the tooth member in which the tips of the adjacent teeth are continuous and the yoke member which is coupled to the outside of the tooth member to form the magnetic path, so that the density of the winding can be increased and the performance can be improved. Further, since the tips of the pole teeth are continuous and the rigidity thereof is improved, the amount of deformation due to the reaction force generated along with the rotation of the rotor is also reduced, and the occurrence of vibration is also suppressed.
Further, when the winding is wound around the tooth member by attaching the insulator around which the winding is wound to the tooth from the outside and disposing the insulator between the winding and the tooth, the winding can be extremely easily wound around the tooth member.
Further, by configuring the electric compressor by housing the motor and the compression element of each of the above inventions in the container as in the invention of claim 7, it is possible to realize a small-sized electric compressor with less vibration, high performance, and less failure.
Drawings
Fig. 1 is a longitudinal sectional side view of an electric compressor to which a motor according to an embodiment of the present invention is mounted.
Fig. 2 is an exploded perspective view of a stator constituting the motor of fig. 1.
Fig. 3 is an enlarged plan sectional view of a main portion of the stator of fig. 2 (embodiment 1, embodiment 2).
Fig. 4 is a plan view of a core of the stator of fig. 2.
Fig. 5 is an enlarged plan view of a main portion of a core of a stator of another embodiment of the present invention (embodiment 3).
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Example 1
Fig. 1 is a longitudinal sectional side view of an electric compressor 1 to which a motor 4 according to an embodiment of the present invention is mounted, fig. 2 is an exploded perspective view of a stator 21 of the motor 4, fig. 3 is an enlarged plan sectional view of a main portion of the stator 21, and fig. 4 is a plan view of an iron core 22 of the stator 21.
In fig. 1, an electric compressor 1 according to an embodiment is a scroll electric compressor in which a scroll compression element 3 and a motor 4 according to the present invention are housed in a container 2. A scroll compression element 3 as an example of a compression element is constituted by a fixed scroll 6 and an orbiting scroll 7, the fixed scroll 6 is fixed to the container 2, the orbiting scroll 7 revolves without rotating with respect to the fixed scroll 6 by a rotation shaft 8 of the motor 4, and the scroll compression element 3 is disposed so that a spiral wrap 11 formed on the fixed scroll 6 meshes with a spiral wrap 12 formed on the orbiting scroll 7.
A refrigerant is introduced from a refrigerant introduction passage not shown in the container 2 and is sucked from the outside into a compression chamber formed between the two surrounds 11 and 12. Since the compression chamber is narrowed toward the center by the orbiting motion of the orbiting scroll 7, the sucked refrigerant is compressed and discharged from the center through the discharge chamber 14 and a refrigerant discharge passage not shown. Since the pressure in the container 2 becomes low, the refrigerant passes around the motor 4, and the motor 4 is cooled by the refrigerant.
Next, the motor 4 of the present invention will be explained. The motor 4 of the embodiment is a permanent magnet synchronous motor, and is configured by a stator 21 and a magnet-embedded rotor 24 (formed by laminating a plurality of electromagnetic steel plates), wherein the stator 21 is configured by a core 22 and a winding 23, and the rotor 24 is fixed to a rotating shaft 8 and rotates inside the stator 21.
The core 22 of the stator 21 has a two-part structure in which a tooth member 26 (inner core) and a yoke member 28 (outer core) of a plurality of (twelve in the present embodiment) teeth 27 are separated from each other, and tip end portions 27A, 27A of adjacent teeth 27, 27 of the tooth member 26 are connected to each other via a bridge portion 29. Thereby, the slits 31 between the teeth 27 of the tooth member 26 are opened outward and closed in the center direction.
The tooth member 26 and the yoke member 28 are formed by laminating and joining a plurality of electromagnetic steel plates. Further, fitting recesses 32 are formed inside the yoke member 28 in the same number as the teeth 27 of the tooth member 26.
On the other hand, the winding 23 is wound in advance around an insulator (bobbin) 33 made of an insulator, and a mounting hole 34 into which the tooth 27 of the tooth member 26 is inserted is formed inside the insulator 33. In the embodiment, the insulating member 33 is formed by injection molding of synthetic resin such as PET (polyethylene terephthalate) or PEN (polyethylene naphthalate).
In assembling the stator 21, first, the magnetic steel plates are laminated and joined to form the tooth member 26 and the yoke member 28. Further, the winding 23 is wound on the insulator 33, and twelve are prepared. Next, the teeth 27 of the tooth member 26 are inserted into the mounting holes 34 of the insulators 33 around which the windings 23 are wound, and the insulators 33 are mounted to all the teeth 27 from the outside (twelve in total).
Thus, the winding 23 is wound and mounted on the tooth member 26. Next, the tooth member 26 around which the winding 23 is wound is fitted into the yoke member 28. At this time, the outer end portions of the teeth 27 of the tooth member 26 are fitted into the fitting recesses 32 of the yoke member 28, so that the tooth member 26 and the yoke member 28 are integrated (fig. 4). The winding 23 of each insulator 33 is wired to form a predetermined circuit. In fig. 4, the insulator 33 and the winding 23 are not shown.
In this way, in the stator 21, the tip end portion 27A of the tooth 27 is continuous, and the winding 23 is fitted from the outside into the slit 31 opened to the outside, so that the density of the winding can be increased and the performance can be improved as compared with a motor in which the winding is wound in series by inserting a nozzle from the gap of the tip end portion of the tooth.
Further, the leading end portions 27A, 27A of the adjacent teeth 27, 27 are continued by the bridge portion 29, and the rigidity thereof is improved, so that the amount of deformation of the stator 27 due to the reaction force accompanying the rotation of the rotor 24 is also reduced, and the occurrence of vibration is also suppressed. Further, the winding 23 is wound around the tooth member 26 by attaching the insulator 33 around which the winding 23 is wound to the tooth 27 from the outside, and the insulator 33 is disposed between the winding 23 and the tooth 27, so that the winding 23 is extremely easily attached to the tooth member 26.
The electric compressor 1 of the embodiment configured to house the motor 4 and the scroll compression element 3 in the container 2 is a small-sized, low-vibration, and high-performance electric compressor.
Next, the structure of the insulating member 33 will be described in detail with reference to fig. 3. As described above, the insulator 33 of the embodiment is formed by injection molding, and has a shape elongated in the axial direction of the motor 4. Therefore, the positions of the gates (gates into which the synthetic resin is injected) at the time of molding the insulator 33 are, for example, both ends of the insulator 33 in the longitudinal direction. That is, the synthetic resins injected from the respective gates merge together at the intermediate portion between the gates, and therefore, the thickness may be reduced at the merged portion.
Although there are cracks and the like as defects in the resin injection molded article, when a thin portion or a crack is generated in the insulator 33, an electric field is concentrated in the defect portion when a high voltage is applied to the winding 23. Further, the insulation member 33 suffers dielectric breakdown due to minute electric discharge generated by repeated application of voltage by PWM control.
Therefore, in the present embodiment, the insulating resin film 36 is disposed on the inner wall of the mounting hole 34 constituting the insulator 33, that is, the inner wall facing the pole teeth 27 on which the insulator 33 is disposed (indicated by "34A" in fig. 3). The resin film 36 is also made of synthetic resin such as PET (polyethylene terephthalate) or PEN (polyethylene naphthalate) and is formed of a plurality of layers.
Since the resin film 36 is composed of a plurality of layers, the probability that defects of the respective layers overlap each other becomes extremely low. In the present embodiment, the resin film 36 is bonded to the inner wall 34A of the insulator 33 by an adhesive having a dielectric constant lower than that of the resin film 36 or by ultrasonic waves.
By disposing the multilayer resin film 36 having a low probability of overlapping defects on the inner wall 34A of the insulator 33 in this manner, electric field concentration at defective portions of the insulator 33 is avoided, and a problem that dielectric breakdown of the insulator 33 occurs can be eliminated.
This reduces the probability of failure of the motor 4, thereby increasing the cost for disposal, and also reducing the thickness of the insulator 33 required to compensate for the conventional defects, thereby reducing the production cost and size.
In addition, as in the present embodiment, the resin film 36 is bonded to the inner wall 34A of the insulator 33 by an adhesive or ultrasonic waves having a dielectric constant lower than that of the resin film 36, so that the assembly work can be facilitated.
Example 2
In the above-described embodiment, the resin film 36 is bonded to the inner wall 34A of the insulator 33 by an adhesive or the like, but the resin film 36 may be disposed on the inner wall 34A of the insulator 33 by insert molding when the insulator 44 is formed by injection molding. In this way, since the resin film 36 can be disposed on the surface or inside of the insulator 33 simultaneously with the molding of the insulator 33, the productivity of the motor 4 can be further improved as compared with the case of bonding with an adhesive or the like as in the above-described embodiment.
Example 3
Next, another embodiment of the present invention will be described with reference to fig. 5. In the above embodiment, the insulating film 36 is disposed on the inner wall 34A of the insulator 33, but instead, as shown in fig. 5, an insulating tape 37 may be wound a plurality of times (a plurality of turns) around each tooth 27 of the tooth member 26 constituting the core 22.
The insulating tape 37 is made of synthetic resin such as PET (polyethylene terephthalate) or PEN (polyethylene naphthalate). Further, by winding the pole teeth 27a plurality of times (a plurality of turns), the probability that the defects of the insulating tapes 37 of the respective layers overlap each other becomes very low.
In this case, as shown in fig. 5, the insulator 33 is attached to the teeth 27 wound with the insulating tape 37 from the outside. Thus, the insulating tape 37 is disposed between the teeth 27 and the insulator 33, and the insulating tape 37 is wound a plurality of times so that the probability of overlapping defects is low. Therefore, even if a defect occurs in the insulator 33 as described above, concentration of an electric field at the defective portion of the insulator 33 can be avoided, and the problem of dielectric breakdown of the insulator 33 can be eliminated.
In addition, since the probability of failure of the motor 4 is also reduced, the cost for disposal can be increased, and the thickness dimension of the insulator 33 required for compensating for the conventional defect can be reduced, and therefore, the production cost and the size can be reduced.
The electric compressor 1 of the embodiment configured to house the motor 4 and the scroll compression element 3 of the respective configurations described above in the container 2 is a small-sized, low-vibration, and high-performance electric compressor.
In the embodiment, the present invention is applied to a scroll motor-driven compressor, but the present invention is not limited to this, and the motor 4 of the present invention is applied to various motor-driven compressors such as a rotary motor-driven compressor.
(symbol description)
1 electric compressor
2 Container
3 scroll compression element
4 Motor
8 rotating shaft
21 stator
22 iron core
23 winding
24 rotor
26-pole tooth component
27 pole tooth
27A front end portion
28 yoke part
29 bridge part
31 slit
33 insulating member
34A inner wall
36 resin film
37 insulating tape.
Claims (7)
1. A motor for an electric compressor, which is formed by disposing an insulator between a winding of a stator and an iron core,
a resin film composed of a plurality of layers is disposed on the inner wall of the insulating member.
2. The motor for an electric compressor according to claim 1,
the resin film is bonded to the inner wall of the insulating member by an adhesive having a dielectric constant lower than that of the resin film or by ultrasonic waves.
3. The motor for an electric compressor according to claim 1,
the insulating member is formed by injection molding of synthetic resin,
the resin film is disposed on an inner wall of the insulating member by insert molding.
4. A motor for an electric compressor, which is formed by disposing an insulator between a winding of a stator and an iron core,
and winding and mounting the insulating tape on the iron core provided with the insulating part for multiple times.
5. The motor for an electric compressor according to any one of claims 1 to 4,
the insulating member is formed by injection molding of synthetic resin.
6. The motor for an electric compressor according to any one of claims 1 to 5,
the core of the stator is composed of a pole tooth part and a yoke part, wherein,
the front ends of adjacent teeth of the tooth parts are continuous,
the yoke member is combined with the outside of the tooth member to form a magnetic circuit,
the insulating material around which the winding is wound is attached to the tooth from the outside to wind the winding around the tooth member, and the insulating material is disposed between the winding and the tooth.
7. A motor for an electric compressor is characterized in that,
housing the motor and compression member of any one of claims 1-6 within a container.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-211551 | 2018-11-09 | ||
| JP2018211551A JP7280687B2 (en) | 2018-11-09 | 2018-11-09 | ELECTRIC COMPRESSOR MOTOR AND ELECTRIC COMPRESSOR INCLUDING THE SAME |
| PCT/JP2019/043426 WO2020095929A1 (en) | 2018-11-09 | 2019-11-06 | Electric compressor motor and electric compressor using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112956116A true CN112956116A (en) | 2021-06-11 |
Family
ID=70611878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980073143.6A Pending CN112956116A (en) | 2018-11-09 | 2019-11-06 | Motor for electric compressor and electric compressor including the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7280687B2 (en) |
| CN (1) | CN112956116A (en) |
| WO (1) | WO2020095929A1 (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288180A (en) * | 1997-04-11 | 1998-10-27 | Toshiba Corp | Compressor |
| JP2001045691A (en) * | 1999-08-02 | 2001-02-16 | Toyoda Mach Works Ltd | Insulating structure of motor |
| JP2003111329A (en) * | 2001-10-03 | 2003-04-11 | Mitsubishi Electric Corp | Stator for rotating electric machine |
| JP2006180674A (en) * | 2004-12-24 | 2006-07-06 | Fujitsu General Ltd | Electric motor |
| JP2009268260A (en) * | 2008-04-25 | 2009-11-12 | Daikin Ind Ltd | Motor, drain pump with motor, indoor unit of air conditioner with drain pump, and air conditioner with indoor unit |
| CN101673982A (en) * | 2008-12-05 | 2010-03-17 | 杨昌正 | Improved structure for three-phase alternating current motor |
| JP2011234537A (en) * | 2010-04-28 | 2011-11-17 | Kawamura Sangyo Co Ltd | Bobbin for rotating electric machine, manufacturing method of rotating electric machine and bobbin for the same |
| CN103475122A (en) * | 2013-09-25 | 2013-12-25 | 永济新时速电机电器有限责任公司 | Synchronous motor magnetic pole with waterproof function |
| JP2014093893A (en) * | 2012-11-06 | 2014-05-19 | Toyota Motor Corp | Stator of rotary electric machine |
| US20160308416A1 (en) * | 2015-04-20 | 2016-10-20 | Honda Motor Co., Ltd. | Insulator |
| CN107925292A (en) * | 2015-09-09 | 2018-04-17 | 日立汽车系统株式会社 | The stator and electric rotating machine of electric rotating machine |
| JP2018153057A (en) * | 2017-03-15 | 2018-09-27 | アイチエレック株式会社 | Insulator, stator and electric motor |
-
2018
- 2018-11-09 JP JP2018211551A patent/JP7280687B2/en active Active
-
2019
- 2019-11-06 WO PCT/JP2019/043426 patent/WO2020095929A1/en active Application Filing
- 2019-11-06 CN CN201980073143.6A patent/CN112956116A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288180A (en) * | 1997-04-11 | 1998-10-27 | Toshiba Corp | Compressor |
| JP2001045691A (en) * | 1999-08-02 | 2001-02-16 | Toyoda Mach Works Ltd | Insulating structure of motor |
| JP2003111329A (en) * | 2001-10-03 | 2003-04-11 | Mitsubishi Electric Corp | Stator for rotating electric machine |
| JP2006180674A (en) * | 2004-12-24 | 2006-07-06 | Fujitsu General Ltd | Electric motor |
| JP2009268260A (en) * | 2008-04-25 | 2009-11-12 | Daikin Ind Ltd | Motor, drain pump with motor, indoor unit of air conditioner with drain pump, and air conditioner with indoor unit |
| CN101673982A (en) * | 2008-12-05 | 2010-03-17 | 杨昌正 | Improved structure for three-phase alternating current motor |
| JP2011234537A (en) * | 2010-04-28 | 2011-11-17 | Kawamura Sangyo Co Ltd | Bobbin for rotating electric machine, manufacturing method of rotating electric machine and bobbin for the same |
| JP2014093893A (en) * | 2012-11-06 | 2014-05-19 | Toyota Motor Corp | Stator of rotary electric machine |
| CN103475122A (en) * | 2013-09-25 | 2013-12-25 | 永济新时速电机电器有限责任公司 | Synchronous motor magnetic pole with waterproof function |
| US20160308416A1 (en) * | 2015-04-20 | 2016-10-20 | Honda Motor Co., Ltd. | Insulator |
| CN107925292A (en) * | 2015-09-09 | 2018-04-17 | 日立汽车系统株式会社 | The stator and electric rotating machine of electric rotating machine |
| JP2018153057A (en) * | 2017-03-15 | 2018-09-27 | アイチエレック株式会社 | Insulator, stator and electric motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020078208A (en) | 2020-05-21 |
| JP7280687B2 (en) | 2023-05-24 |
| WO2020095929A1 (en) | 2020-05-14 |
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Address after: Ise City Shou Qi Japanese qunma County town 20 times Applicant after: SANDEN Corp. Address before: Ise City Shou Qi Japanese qunma County town 20 times Applicant before: SANDEN Corp. |