CN107612170A - Magnet ring, rotor and motor - Google Patents
Magnet ring, rotor and motor Download PDFInfo
- Publication number
- CN107612170A CN107612170A CN201710994634.7A CN201710994634A CN107612170A CN 107612170 A CN107612170 A CN 107612170A CN 201710994634 A CN201710994634 A CN 201710994634A CN 107612170 A CN107612170 A CN 107612170A
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- magnetic
- ring body
- ring
- magnet ring
- magnetic part
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Abstract
The invention provides a kind of magnet ring, rotor and motor, wherein, magnet ring includes：First ring body, the first ring body are cyclic structure, and the first ring body includes the first magnetic part, and the first magnetic part has magnetic；Second ring body, the second ring body are cyclic structure, and the end of the second ring body is in contact with the end of the first ring body, and the second ring body includes the second magnetic part, and the second magnetic part has magnetic, has angle between the second magnetic part and the first magnetic part.By technical scheme provided by the invention, the problem of cogging torque of motor of the prior art is too high can solve the problem that.
Description
Technical field
The present invention relates to technical field of motors, in particular to a kind of magnet ring, rotor and motor.
Background technology
When cogging torque is machine winding no power, caused turn due to the magnetic pull between the stator and rotor of motor
Square.Cogging torque is the important parameter of motor, and its numerical value is smaller, and the control accuracy of motor is higher, therefore motor is to cogging torque
Requirement it is higher.For example, the control accuracy of servomotor is high, performance is good, the requirement to cogging torque is higher.
In order to reduce the cogging torque of motor, there is a kind of technical scheme that magnet ring is set in motor in the prior art, but
Be motor cogging torque it is still higher.
The content of the invention
The present invention provides a kind of magnet ring, rotor and motor, too high to solve the cogging torque of motor of the prior art
The problem of.
In order to solve the above problems, according to an aspect of the present invention, the invention provides a kind of magnet ring, including：First
Ring body, the first ring body are cyclic structure, and the first ring body includes the first magnetic part, and the first magnetic part has magnetic；Second ring body, the second ring
Body is cyclic structure, and the end of the second ring body is in contact with the end of the first ring body, and the second ring body includes the second magnetic part, the second magnetic
Part has magnetic, has angle between the second magnetic part and the first magnetic part.
Further, the first ring body includes multiple first magnetic parts, and circumferencial direction of multiple first magnetic parts along the first ring body is suitable
Secondary connection, the second ring body include multiple second magnetic parts, and circumferencial direction of multiple second magnetic parts along the second ring body is sequentially connected with, multiple
Second magnetic part is corresponded with multiple first magnetic parts and set, and the second magnetic part and the first magnetic part being correspondingly arranged are V-shaped.
Further, the first magnetic part has first side, and two neighboring first magnetic part is connected by first side, the
There is the first angle between one side and the axis of the first ring body.
Further, the value of the first angle is α, and α span is：0 ° of ＜ α≤360 °/z, wherein z are the tooth of stator
The number of groove.
Further, α value is 180 °/z.
Further, two neighboring first magnetic part magnetic on the contrary, and/or, the first magnetic part being correspondingly arranged and the second magnetic
The magnetic of part is identical.
Further, the first ring body is integral type structure.
Further, the first ring body has contact surface with the second ring body, and the first ring body is with the second ring body relative to contact surface
Symmetrically.
Further, the first magnet ring is multiple that second magnet ring is multiple, and multiple first magnet rings replace with multiple second magnet rings
Set.
According to another aspect of the present invention, there is provided a kind of rotor, including magnet ring and rotating shaft, magnet ring are arranged in rotating shaft,
Wherein, magnet ring is the magnet ring of above-mentioned offer.
Further, rotating shaft includes the first shaft part and the second shaft part that ladder is set, and the diameter of the first shaft part is less than second
The diameter of shaft part, magnet ring are set on the first shaft part, and the end face of magnet ring abuts with the end face of the second shaft part.
According to another aspect of the invention, there is provided a kind of motor, including stator and rotor, rotor are arranged in stator,
Wherein, rotor is the rotor of above-mentioned offer.
Apply the technical scheme of the present invention, the first ring body and the second ring body to contact with each other, and are set in magnet ring
One ring body includes having magnetic first magnetic part, and the second ring body includes having magnetic second magnetic part, the second magnetic part and the first magnetic
There is angle between part.After rotor with the magnet ring is set in the stator, due to having between the second magnetic part and the first magnetic part
There is angle, caused magnetic pull between the direction of caused magnetic pull and the first magnetic part and stator between the second magnetic part and stator
Direction is different, and the magnetic pull of such different directions can be offset or partial offset, so as to reduce the effect between stator and rotor
Power, and then the cogging torque of motor can be reduced.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of rotor provided by the invention；
Fig. 2 shows the axial sectional view of the rotor in Fig. 1；
Fig. 3 shows the structural representation of the first ring body in magnet ring；
Fig. 4 shows the radial cross-section of the rotor in Fig. 1；
Fig. 5 shows another structural representation of rotor provided by the invention；
Fig. 6 shows the axial sectional view of the rotor in Fig. 5.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, the first ring body；11st, the first magnetic part；20th, the second ring body；21st, the second magnetic part；30th, rotating shaft；31st, the first shaft part；
32nd, the second shaft part.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
As shown in Figures 1 to 6, the embodiment provides a kind of magnet ring, the magnet ring includes the first ring body 10 and the
Two ring bodies 20.Wherein, the first ring body 10 is cyclic structure, and the first ring body 10 includes the first magnetic part 11, and the first magnetic part 11 has magnetic
Property.Second ring body 20 is cyclic structure, and the end of the second ring body 20 is in contact with the end of the first ring body 10, and the second ring body 20 is wrapped
The second magnetic part 21 is included, the second magnetic part 21 has magnetic, and has angle between the second magnetic part 21 and the first magnetic part 11.
Using the technical scheme of the present embodiment, the first ring body 10 and the second ring body 20 to contact with each other is set in magnet ring,
And the first ring body 10 includes having magnetic first magnetic part 11, the second ring body 20 includes having magnetic second magnetic part 21, the
There is angle between two magnetic parts 21 and the first magnetic part 11.After rotor with the magnet ring is set in the stator, due to the second magnetic
There is angle, the direction of caused magnetic pull and the first magnetic part between the second magnetic part 21 and stator between the magnetic part 11 of part 21 and first
The direction of caused magnetic pull is different between 11 and stator, and the magnetic pull of such different directions can be offset or partial offset, from
And reduce the active force between stator and rotor, and then the cogging torque of motor can be reduced.
By the technical scheme of the present embodiment, the cogging torque of motor can be reduced, so as to improve the control accuracy of motor,
But also the torque ripple of motor can be reduced, so as to reduce the vibration of motor and noise, improve motor performance.By magnet ring
Be arranged to the first ring body 10 and the second ring body 20 can also be easy to magnet ring and rotor rotating shaft assembling, so as to improve assembling essence
Degree, reduce production cost.
Specifically, the first ring body 10 includes multiple first magnetic parts 11, circumference of multiple first magnetic parts 11 along the first ring body 10
Direction is sequentially connected with, and the second ring body 20 includes multiple second magnetic parts 21, circumference side of multiple second magnetic parts 21 along the second ring body 20
To being sequentially connected with, multiple second magnetic parts 21 are corresponded with multiple first magnetic parts 11 and set, the second magnetic part 21 being correspondingly arranged with
First magnetic part 11 is V-shaped.By setting multiple first magnetic parts 11 and multiple second magnetic parts 21, and by multiple second magnetic parts 21 with
Multiple first magnetic parts 11, which correspond, to be set, and can so have the second magnetic part 21 and the of multipair mutual cooperation in circumferencial direction
One magnetic part 11, so as to which caused magnetic pull can be offset or partial offset on the diverse location of magnet ring circumferencial direction, so that
The uniform force of rotor and stator, reduce the cogging torque of motor.
As shown in figure 3, the first magnetic part 11 has first side, two neighboring first magnetic part 11 is coordinated by first side and connected
Connect, there is the first angle between the axis of first side and the first ring body 10.The first magnetic part 11 can be tilted using such a scheme
It is arranged in the first ring body 10, in order to produce angle between the first magnetic part 11 and the second magnetic part 21.So that the first magnetic part 11
Magnetic pull caused by caused magnetic pull and the second magnetic part 21 is offset.Moreover, the first magnetic part 11 has two first sides, two
First side is parallel to each other, and being arranged such can make multiple first magnetic parts 11 have identical structure, consequently facilitating the first ring body 10
Manufacture and magnetize.But also the first ring body 10 uniform force in a circumferential direction can be made, so as to further reduce electricity
The cogging torque of machine.
As shown in figure 3, the value of the first angle is α, and α span is 0 ° of ＜ α≤360 °/z, and wherein z is stator
Teeth groove number.α value is set to the cogging torque for, being advantageous to reduce motor within this range.
Preferably, α value can be arranged to 180 °/z in the present embodiment, so can preferably plays reduction teeth groove
The effect of torque.
Correspondingly, the second magnetic part 21 has second side, and two neighboring second magnetic part 21 is connected by second side,
There is the first angle between the axis of second side and the first ring body 10.The second magnetic part 21 can be obliquely installed using such a scheme
In the first ring body 10, in order to produce angle between the second magnetic part 21 and the first magnetic part 11.So that the second magnetic part 21 produces
Magnetic pull and the first magnetic part 11 caused by magnetic pull offset.Moreover, the second magnetic part 21 has two second sides, two second
Side is parallel to each other, and being arranged such can make multiple second magnetic parts 21 have identical structure, consequently facilitating the system of the second ring body 20
Make and magnetize.But also the second ring body 20 uniform force in a circumferential direction can be made, so as to further reduce motor
Cogging torque.
As shown in figure 3, in the present embodiment, the magnetic of two neighboring first magnetic part 11 in such as figure on the contrary, be arranged alternately
N poles and S poles, can so improve the performance of motor.In the present embodiment, the first magnetic part 11 and the second magnetic part being correspondingly arranged
21 magnetic is identical, is arranged such, be advantageous to make between the first magnetic part 11 and stator caused active force and the second magnetic part 21 with
Caused active force is cancelled out each other or partial offset between stator, so as to reduce the cogging torque of motor.
In the present embodiment, the first ring body 10 integral structure can be arranged to, the first ring body 10 can be so easy to
Manufacture, so as to reduce the cost of magnet ring.Moreover, the first ring body 10 is arranged into integral structure, the first ring body 10 can be made
Material it is more uniform, so as to improve the qualification rate of product and performance.
Correspondingly, the second ring body 20 can be arranged to integral structure, can so be easy to the manufacture of the second ring body 20,
So as to reduce the cost of magnet ring.Moreover, the second ring body 20 is arranged into integral structure, the material of the second ring body 20 can be made more
Add uniformly, so as to improve the qualification rate of product and performance.
In the present embodiment, the first ring body 10 and the second ring body 20 have contact surface, the first ring body 10 and the second ring body 20
It is symmetrical relative to contact surface.It is arranged such, on the one hand on the other hand be able to can makes in the first ring body 10 in order to the manufacture of magnet ring
The magnetic pull being subject to preferably is offset with the magnetic pull being subject in the second ring body 20, so as to reduce cogging torque, improves electricity
The performance of machine.
As shown in figure 5, the first magnet ring can be arranged into multiple, the second magnet ring is also configured as multiple, multiple first magnet rings
It is arranged alternately with multiple second magnet rings.It is arranged such, on the one hand can be easy to the manufacture of magnet ring, so as to reduces the system of device
This is caused, on the other hand can further reduce the cogging torque of motor, the performance of lifting motor.
As shown in Figures 1 to 6, another embodiment of the present invention provides a kind of rotor, and rotor includes magnet ring and rotating shaft 30,
Magnet ring is arranged in rotating shaft 30, wherein, magnet ring is the magnet ring that above-described embodiment provides.
Using the technical scheme of the present embodiment, the first ring body 10 and the second ring body 20 to contact with each other is set in magnet ring,
And the first ring body 10 includes having magnetic first magnetic part 11, the second ring body 20 includes having magnetic second magnetic part 21, the
There is angle between two magnetic parts 21 and the first magnetic part 11.After the rotor is set in the stator, due to the second magnetic part 21 and first
There is angle between magnetic part 11, between the second magnetic part 21 and stator the direction of caused magnetic pull and the first magnetic part 11 and stator it
Between caused magnetic pull direction it is different, the magnetic pull of such different directions can be offset or partial offset, so as to reduce stator
Active force between rotor, and then the cogging torque of motor can be reduced, so as to improve the control accuracy of motor.
Moreover, magnet ring is set in rotating shaft 30, concentric effect is good, can make the stress ratio of diverse location on circumferencial direction
It is more uniform, so as to reduce the magnetic pull of one side, reduce cogging torque and improve the control accuracy of motor.In the present embodiment
In, it can first magnetize, be then fitted in rotating shaft 30 to magnet ring, first magnet ring can also be assembled in rotating shaft 30 and then be magnetized.
First magnetic part 11 can be the magnetic part being separately provided, or the magnetic regions formed after being magnetized in the first ring body 10.
Correspondingly, the second magnetic part 21 can be the magnetic part being separately provided, or the magnetic formed after being magnetized in the second ring body 20
Property region.
As shown in Figure 2 and Figure 6, rotating shaft 30 includes the first shaft part 31 and the second shaft part 32 that ladder is set, wherein, first axle
The diameter of section 31 is less than the diameter of the second shaft part 32, and magnet ring is set on the first shaft part 31, the end face of magnet ring and the second shaft part 32
End face abut.Being arranged such can be easy to magnet ring fixed and positioned in rotating shaft 30.
In the present embodiment, there is gap between magnet ring and the first shaft part 31, be so easy to magnet ring through the first shaft part
On 31, magnet ring can be realized by gluing mode with the first shaft part 31 and is reliably connected.For example, can magnet ring and the first shaft part 31 it
Between using anaerobic adhesive of good performance and spray catalyst bonding solidification, so as to improve bonding strength.The material of magnet ring can use
The larger permanent-magnet material of magnetic energy product, such as neodymium iron boron, its molding mode can be used to top radiation shaping, can so make magnet ring material one
Cause property is further lifted.The material of rotating shaft 30 is soft magnetic materials, and such as No. 45 steel, soft magnetic materials can be magnetized by external magnetic field, but
Remove substantially nonmagnetic after external magnetic field, therefore can ensure that magnet ring is more closely attached to the surface of rotating shaft 30.In the present embodiment
In, the axial length of the axial length of magnet ring and the first shaft part 31 can be arranged to identical value, so that both are preferably
Match somebody with somebody.
Another embodiment of the present invention provides a kind of motor, and motor includes stator and rotor, and rotor is arranged in stator,
Wherein, rotor is the rotor of above-mentioned offer.In the present embodiment, due to having folder between the second magnetic part 21 and the first magnetic part 11
Angle, caused magnetic pull between the direction of caused magnetic pull and the first magnetic part 11 and stator between the second magnetic part 21 and stator
Direction is different, and the magnetic pull of such different directions can be offset or partial offset, so as to reduce the effect between stator and rotor
Power, and then the cogging torque of motor can be reduced, so as to improve the control accuracy of motor.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for the ease of description, each portion shown in accompanying drawing
The size divided not is to be drawn according to the proportionate relationship of reality.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following accompanying drawing with letter, therefore, once it is defined in a certain Xiang Yi accompanying drawing, then subsequent attached
It need not be further discussed in figure.
In the description of the invention, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation or position shown in the drawings and closed
System, it is for only for ease of the description present invention and simplifies description, in the case where not making opposite explanation, these nouns of locality do not indicate that
There must be specific orientation with the device or element for implying meaning or with specific azimuth configuration and operation, therefore can not manage
Solve as limiting the scope of the invention；The noun of locality " inside and outside " refers to relative to inside and outside each part profile in itself.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Furthermore, it is necessary to explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts to be distinguished, do not have Stated otherwise such as, above-mentioned word does not have particular meaning, therefore it is not intended that to this
The limitation of invention protection domain.
Claims (12)
- A kind of 1. magnet ring, it is characterised in that including：First ring body (10), first ring body (10) are cyclic structure, and first ring body (10) includes the first magnetic part (11), The first magnetic part (11) has magnetic；Second ring body (20), second ring body (20) are cyclic structure, the end and described first of second ring body (20) The end of ring body (10) is in contact, and second ring body (20) includes the second magnetic part (21), and the second magnetic part (21) has magnetic Property, there is angle between the second magnetic part (21) and the first magnetic part (11).
- 2. magnet ring according to claim 1, it is characterised in that first ring body (10) includes multiple first magnetic parts (11), circumferencial direction of multiple first magnetic parts (11) along first ring body (10) is sequentially connected with, second ring body (20) multiple second magnetic parts (21) are included, circumferencial direction of multiple second magnetic parts (21) along second ring body (20) is sequentially Connection, multiple second magnetic parts (21) correspond with multiple first magnetic parts (11) and set, described the be correspondingly arranged Two magnetic parts (21) and the first magnetic part (11) are V-shaped.
- 3. magnet ring according to claim 2, it is characterised in that the first magnetic part (11) has a first side, and adjacent two The individual first magnetic part (11) is connected by the first side, the first side and the axle of first ring body (10) There is the first angle between line.
- 4. magnet ring according to claim 3, it is characterised in that the value of first angle is α, and α span is：0 ° of ＜ α≤360 °/z, wherein z are the number of the teeth groove of stator.
- 5. magnet ring according to claim 4, it is characterised in that α value is 180 °/z.
- 6. magnet ring according to claim 2, it is characterised in that the magnetic of the two neighboring first magnetic part (11) on the contrary, And/or the first magnetic part (11) being correspondingly arranged is identical with the magnetic of the second magnetic part (21).
- 7. magnet ring according to claim 1, it is characterised in that first ring body (10) is integral type structure.
- 8. magnet ring according to any one of claim 1 to 7, it is characterised in that first ring body (10) and described the Two ring bodies (20) have contact surface, and first ring body (10) and second ring body (20) are symmetrical relative to the contact surface.
- 9. magnet ring according to claim 1, it is characterised in that first magnet ring is multiple, and second magnet ring is more Individual, multiple first magnet rings are arranged alternately with multiple second magnet rings.
- 10. a kind of rotor, including magnet ring and rotating shaft (30), the magnet ring are arranged in the rotating shaft (30), it is characterised in that institute State magnet ring of the magnet ring any one of claim 1 to 9.
- 11. rotor according to claim 10, it is characterised in that the rotating shaft (30) includes the first shaft part that ladder is set (31) and the second shaft part (32), the diameter of first shaft part (31) are less than the diameter of second shaft part (32), the magnet ring It is set on first shaft part (31), the end face of the magnet ring abuts with the end face of second shaft part (32).
- 12. a kind of motor, including stator and rotor, the rotor are arranged in the stator, it is characterised in that the rotor is Rotor described in claim 10 or 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710994634.7A CN107612170A (en) | 2017-10-23 | 2017-10-23 | Magnet ring, rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710994634.7A CN107612170A (en) | 2017-10-23 | 2017-10-23 | Magnet ring, rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107612170A true CN107612170A (en) | 2018-01-19 |
Family
ID=61079164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710994634.7A Pending CN107612170A (en) | 2017-10-23 | 2017-10-23 | Magnet ring, rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107612170A (en) |
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|---|---|---|---|---|
| JP2004343907A (en) * | 2003-05-16 | 2004-12-02 | Mitsubishi Electric Corp | Sintered ring magnet |
| JP2005065455A (en) * | 2003-08-19 | 2005-03-10 | Mitsubishi Electric Corp | Sintered ring magnet |
| CN204681183U (en) * | 2015-05-18 | 2015-09-30 | 上海翡叶动力科技有限公司 | The multipole inner rotor core magnetized in a kind of oblique pole |
| CN205070637U (en) * | 2015-11-10 | 2016-03-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric motor rotor reaches motor including this electric motor rotor |
| CN106451857A (en) * | 2016-11-28 | 2017-02-22 | 江门麦威电子科技有限公司 | Oblique magnetic circuit and magnet ring assembly for external rotor of brushless direct current motor, and production method thereof |
| CN106877532A (en) * | 2017-04-26 | 2017-06-20 | 广东美芝制冷设备有限公司 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
| CN207353936U (en) * | 2017-10-23 | 2018-05-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnet ring, rotor and motor |
-
2017
- 2017-10-23 CN CN201710994634.7A patent/CN107612170A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004343907A (en) * | 2003-05-16 | 2004-12-02 | Mitsubishi Electric Corp | Sintered ring magnet |
| JP2005065455A (en) * | 2003-08-19 | 2005-03-10 | Mitsubishi Electric Corp | Sintered ring magnet |
| CN204681183U (en) * | 2015-05-18 | 2015-09-30 | 上海翡叶动力科技有限公司 | The multipole inner rotor core magnetized in a kind of oblique pole |
| CN205070637U (en) * | 2015-11-10 | 2016-03-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric motor rotor reaches motor including this electric motor rotor |
| CN106451857A (en) * | 2016-11-28 | 2017-02-22 | 江门麦威电子科技有限公司 | Oblique magnetic circuit and magnet ring assembly for external rotor of brushless direct current motor, and production method thereof |
| CN106877532A (en) * | 2017-04-26 | 2017-06-20 | 广东美芝制冷设备有限公司 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
| CN207353936U (en) * | 2017-10-23 | 2018-05-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnet ring, rotor and motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180119 |
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| RJ01 | Rejection of invention patent application after publication |