CN107634598B - Rotor and motor - Google Patents
Rotor and motor Download PDFInfo
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- CN107634598B CN107634598B CN201710916648.7A CN201710916648A CN107634598B CN 107634598 B CN107634598 B CN 107634598B CN 201710916648 A CN201710916648 A CN 201710916648A CN 107634598 B CN107634598 B CN 107634598B
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- rotor
- armature spindle
- rotor core
- plastic packaging
- packaging component
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Abstract
The present invention relates to motor fields, disclose a kind of rotor and motor, the rotor include armature spindle (10) and be set on the armature spindle (10) and with the armature spindle (10) spaced rotor core (20), plastic packaging component (30) are provided between the armature spindle (10) and the rotor core (20), the armature spindle (10) and the rotor core (20) are fixed by the plastic packaging component (30), the plastic packaging component (30) by between the armature spindle (10) and the rotor core (20) fill insulant formed.In the present invention, the size of impedance can be adjusted by adjusting the thickness of plastic packaging component, since plastic packaging component is between armature spindle and rotor core in the present invention, the adjusting space of the thickness of plastic packaging component in the present invention is larger, so that the high frequency current potential of bearing internal external circle is easier to reach equilibrium state, and then it can effectively improve the galvano-cautery phenomenon of bearing.
Description
Technical field
The present invention relates to motors, more particularly to a kind of rotor and motor.
Background technique
In motor operation, under normal circumstances, the shaft voltage of motor is lower, and between the ball of motor bearings and Internal and external cycle
All existing oil film (being formed by the lubricating grease for lubricating bearing), oil film plays insulating effect, the electric current very little of bearing internal external circle,
And after oil film is punctured by electric current, the high fever for generation of discharging will jeopardize bearing, that is to say, that very big electricity is generated to bearing
Corrosiveness.And in recent years, due to the energy-efficient trend of air-conditioner set, most of air-conditioner set all passes through efficient brushless motor generation
For induction machine as the blower of air-conditioner set.And these brushless motors use pulse width modulation method by Driven by inverter
(PWM, i.e. Pulse Width Modulation) is used as driving method.Using in this PWM driving method, it is possible to occur
Serious galvano-cautery phenomenon, to generate corrugation on rotor portion bearing, while also will cause abnormal sound, and also
It will affect the service life of bearing.
In order to improve the galvano-cautery phenomenon of bearing, usually make the impedance (referring here to capacitive reactance) of bearing inner race side at present
Increase, so that the impedance of bearing inner race side is approximately equal to the impedance of bearing outer ring side, such bearing inner race and outer ring
Between high frequency potential balance, that is to say, that the side of bearing inner race and the potential difference of the side on the outside of bearing are approximately zero, from
And the shaft voltage between bearing internal external circle is reduced, and then improve bearing galvano-cautery phenomenon.Specifically, at present usually by using double
Iron core (hereinafter referred to as in iron core and outer iron core) structure improves the impedance of bearing inner race side, specifically, interior iron core is installed
There is certain gap on armature spindle, between interior iron core and outer iron core and (interior iron core is logical for filling injected plastics material in the gap
It crosses axis to be connected to bearing inner race, increases injected plastics material between interior iron core and outer iron core that is, increasing bearing inner race side
Impedance), thus iron core and outer iron core in fixed.
However, this double-iron core structure due to the size of interior iron core and outer iron core design limited (installation space is limited), because
The finite thickness of injected plastics material between this interior iron core and outer iron core, that is, the adjustable range of impedance are limited, therefore this feelings
Be difficult under condition so that the impedance of bearing inner race side is approximately equal to etc. at outer ring side impedance, that is to say, that be extremely difficult to more
Ideal shaft voltage is horizontal, that is, is difficult to improve the galvano-cautery phenomenon of bearing.
Summary of the invention
The purpose of the invention is to overcome the problems, such as galvano-cautery phenomenon of the existing technology, rotor and motor are provided,
The rotor and motor can be effectively improved the galvano-cautery phenomenon of bearing.
To achieve the goals above, one aspect of the present invention provides a kind of rotor, and the rotor includes armature spindle and is arranged
On the armature spindle and with the spaced rotor core of the armature spindle, set between the armature spindle and the rotor core
Be equipped with plastic packaging component, the armature spindle is fixed with the rotor core by the plastic packaging component, the plastic packaging component by
Fill insulant is formed between the armature spindle and the rotor core, can be injection moulding.
Preferably, the rotor includes at least one structural reinforcement member being fixed on the armature spindle, and the structure adds
Strong part includes the first reinforcement part that can be improved the armature spindle Yu the plastic packaging component bond strength, the structural reinforcement member and
The rotor core is separated by the plastic packaging component.
Preferably, the structural reinforcement member includes the sleeve part for being arranged and being fixed on the armature spindle, from the sleeve
Portion is outward extended with multiple first reinforcement parts, and first reinforcement part is around the spaced recess of the sleeve part
Portion.
Preferably, the structural reinforcement member is the side of metalwork, the sleeve part and the armature spindle by interference fit
Formula is fixed.
Preferably, the structural reinforcement member is two and is located at the both ends in axial direction of the rotor core.
Preferably, it is provided on the inner wall of the rotor core for improving the rotor core and the plastic packaging component knot
Close the second reinforcement part of intensity.
Preferably, second reinforcement part is the recessed portion being arranged on the inner wall of the rotor core.
Preferably, at least one magnetic shoe is fixed on the outer wall of the rotor core, the magnetic shoe is pasted onto the rotor
On iron core.
Preferably, at least one magnetic shoe is fixed on the outer wall of the rotor core, the plastic packaging component extends to described
The outer wall of rotor core, the magnetic shoe extend to the part at the rotor core and the rotor by the plastic packaging component
Iron core is fixed.
Second aspect of the present invention provides a kind of motor, and the motor includes the rotor.
In the present invention, by the way that plastic packaging component is arranged between armature spindle and rotor core, to improve the bearing of rotor
(bearing is mounted on armature spindle, and armature spindle and bearing inner race belong to conductor, can be connected, institute for the impedance of inner ring side
To increase the impedance that the impedance at armature spindle is equivalent to increase bearing inner race side) so that the impedance of bearing internal external circle reaches flat
Weighing apparatus reduces shaft voltage, so as to improve the galvano-cautery phenomenon of bearing.Wherein it is possible to be adjusted by the thickness for adjusting plastic packaging component
The size of impedance, since plastic packaging component is compared and the prior art between armature spindle and rotor core in the present invention
In double-iron core structure, the present invention in plastic packaging component thickness adjusting space it is larger so that the height of bearing internal external circle
Frequency current potential is easier to reach equilibrium state, and then can effectively improve the galvano-cautery phenomenon of bearing.
Detailed description of the invention
Fig. 1 is the perspective view for the rotor that a specific embodiment of the invention provides.
Fig. 2 is the cross-sectional view of rotor shown in FIG. 1.
Fig. 3 is the perspective view of the structural reinforcement member of rotor shown in FIG. 1.
Fig. 4 is the structural schematic diagram of the rotor core of rotor shown in FIG. 1.
Description of symbols
10- armature spindle；20- rotor core；
The second reinforcement part of 21-；30- plastic packaging component；
40- structural reinforcement member；The first reinforcement part of 41-；
42- sleeve part；50- magnetic shoe.
Specific embodiment
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " typically refers to
With reference to upper and lower, left and right shown in the drawings；" inside and outside " refers to the inside and outside of the profile relative to each component itself.
According to an aspect of the present invention, a specific embodiment of the invention provides a kind of rotor, as depicted in figs. 1 and 2,
The rotor include armature spindle 10 and be set on armature spindle 10 and with the spaced rotor core 20 of armature spindle 10, it is described
Plastic packaging component 30 is provided between armature spindle 10 and rotor core 20, the armature spindle 10 passes through plastic packaging component with rotor core 20
30 is fixed, the plastic packaging component 30 by between armature spindle 10 and rotor core 20 fill insulant formed, can be note
Penetrate molding.That is, armature spindle 10 is fixed with rotor core 20 by insulating materials injection moulding in the present invention, and
The moulding formed in injection process is plastic packaging component 30 described above.Wherein, after injection moulding, the side of plastic packaging component 30
It is combined with the injection molding of armature spindle 10, the other side of plastic packaging component 30 is combined with the injection molding of rotor core 20, that is to say, that 10 He of armature spindle
Rotor core 20 is separated by plastic packaging component 30.
In the present invention, by the way that plastic packaging component 30 is arranged between armature spindle 10 and rotor core 20, to improve rotor
The impedance of bearing inner race side (bearing is mounted on armature spindle 10, and it is that can lead that armature spindle and bearing inner race, which belong to conductor,
Logical, so increasing the impedance at armature spindle is equivalent to the impedance for increasing bearing inner race side) so that the impedance of bearing internal external circle
Reach balance, shaft voltage is reduced, so as to improve the galvano-cautery phenomenon of bearing.Wherein it is possible to pass through the thickness for adjusting plastic packaging component 30
The size for spending and adjusting impedance, due in the present invention plastic packaging component 30 be between armature spindle 10 and rotor core 20,
Compared to double-iron core structure in the prior art, the present invention in plastic packaging component 30 thickness adjusting space it is larger, to make
The high frequency current potential for obtaining bearing internal external circle is easier to reach equilibrium state, and then can effectively improve the galvano-cautery phenomenon of bearing.
Wherein, the armature spindle 10 can be formed using metal cutting process, and rotor core 20 can be by silicon steel plate stacking
It forms, certainly, manner described above is not limited to for the generation type of armature spindle 10 and rotor core 20.In addition, here
Insulating materials can be plastics, naturally it is also possible to be other can using injection molding mode be formed plastic packaging component 30 appoint
What insulative type material.
Further, the rotor includes at least one structural reinforcement member 40 being fixed on armature spindle 10, the structure
Reinforcer 40 includes the first reinforcement part 41 that can be improved armature spindle 10 Yu 30 bond strength of plastic packaging component, the structural reinforcement member
40 are separated (i.e. structural reinforcement member 40 and rotor core 20 is not directly contacted with) with rotor core 20 by plastic packaging component 30, that is,
It says, after injection moulding, structural reinforcement member 40 is fixed together with the injection molding of plastic packaging component 30.Preferably, in order to improve structural strength,
A part of the 30 clad structure reinforcer 40 of plastic packaging component.
Specifically, as shown in figure 3, the structural reinforcement member 40 includes the sleeve part for being arranged and being fixed on armature spindle 10
42, multiple first reinforcement parts 41 are outward extended with from sleeve part 42, first reinforcement part 41 is to set around the interval of sleeve part 42
The recessed portion set.Wherein, the setting of the first reinforcement part 41 can be such that armature spindle and plastic packaging component 30 generates back in a circumferential direction
Turn intensity, and then plastic packaging component 30 is avoided to relatively rotate with armature spindle 10.It should be noted that the first reinforcement part here
41 can also be that other can be improved the structure of armature spindle 10 Yu 30 bond strength of plastic packaging component, for example, the first reinforcement part
41 can be laciniation.
Wherein, the material of the structural reinforcement member 40 can be selected according to the actual situation.Preferably, it is contemplated that structure
Intensity and the convenience of installation, the structural reinforcement member 40 are metalwork, can use formed by stretching steel plate.The sleeve part
42 are fixed by way of interference fit with the armature spindle 10.
Further, the quantity of structural reinforcement member 40 and setting position can be selected according to actual needs.In
In present embodiment, as shown in Fig. 2, the structural reinforcement member 40 is two and is located at rotor core 20 in axial direction
Both ends.
In the present invention, directly plastic packaging component 30 is contacted with armature spindle 10, and by being placed in 20 both ends of rotor core
Structural reinforcement member 40 guarantee plastic packaging component and armature spindle binding force, and due to structural reinforcement member 40 can using kinds of processes into
Row manufacture, forms a variety of polymorphic structures (such as recessed portion or zigzag above), to guarantee the rotor in the present invention
In the tangential structural strength of axial direction, radial direction, circumference, structure is simple, easily manufactured.Furthermore it is also possible to by changing structural strengthening
The structure of part 40 and the weight for mitigating rotor itself reduce revolution inertia, it is sensitive to improve response, while can also reduce cost.
Further, as shown in figure 4, be provided on the inner wall of the rotor core 20 for improve rotor core 20 with
Second reinforcement part 21 of 30 bond strength of plastic packaging component.Wherein, second reinforcement part 21 can be setting in rotor core 20
Inner wall on recessed portion.Certainly, the second reinforcement part 21 is also possible to laciniation, that is to say, that as long as can make rotor
Iron core 20 and plastic packaging component 30 generate revolving strength in a circumferential direction, and then plastic packaging component 30 and rotor core 20 is avoided to occur
The structure of relative rotation belongs to the second reinforcement part 21 signified in the present invention.
In addition, being fixed at least one magnetic shoe 50 on the outer wall of the rotor core 20 with reference to Fig. 1, the magnetic shoe 50 is viscous
It is attached on rotor core 20, for example, magnetic shoe can be fixed by glue and rotor core 20.Wherein, magnetic shoe 50 here can be with
It is formed or by permanent magnetic material sintering by permanent magnetic material compression moulding.Certainly, the magnetic shoe 50 can also lead to
It crosses other modes and rotor core 20 is fixed, in the present embodiment, it is contemplated that the convenience of processing, it is preferable that be injected into
Magnetic shoe 50 and the outer wall of rotor core 20 are fixed by injected plastics material during type, specifically, the plastic packaging component 30 prolongs
The outer wall of rotor core 20 is extended to, the magnetic shoe 50 extends to part and the rotor at rotor core 20 by plastic packaging component 30
Iron core 20 is fixed.Wherein, when the magnetic shoe 50 is multiple, the magnetic shoe 50 is along the circumferential uniformly fixed of rotor core 20.
According to another aspect of the present invention, a specific embodiment of the invention also provides a kind of motor, the motor packet
Include the rotor.In this way, motor provided by the present invention can be applied in air-conditioner set, thus in view of air-conditioner set
Power saving and when using pulse width modulation method, can improve the galvano-cautery of the bearing on rotor, reduce due to galvano-cautery bring
Noise problem, while can be improved the service life of rotor bearing, and then improve the service life of motor.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention, including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
Claims (8)
1. a kind of rotor, which is characterized in that the rotor includes armature spindle (10) and is set on the armature spindle (10) simultaneously
With the armature spindle (10) spaced rotor core (20), set between the armature spindle (10) and the rotor core (20)
It is equipped with plastic packaging component (30), the armature spindle (10) and the rotor core (20) are fixed by the plastic packaging component (30), institute
State plastic packaging component (30) by between the armature spindle (10) and the rotor core (20) fill insulant formed, it is described
Rotor includes at least one structural reinforcement member (40) being fixed on the armature spindle (10), and the structural reinforcement member (40) includes
It can be improved the first reinforcement part (41) of the armature spindle (10) Yu plastic packaging component (30) bond strength, the structural strengthening
Part (40) is separated with the rotor core (20) by the plastic packaging component (30), and the structural reinforcement member (40) includes being arranged simultaneously
The sleeve part (42) being fixed on the armature spindle (10) is outward extended with multiple described first from the sleeve part (42) and reinforces
Portion (41), first reinforcement part (41) are around the sleeve part (42) spaced recessed portion, the plastic packaging component
(30) first reinforcement part (41) is coated.
2. rotor according to claim 1, which is characterized in that the structural reinforcement member (40) is metalwork, the sleeve
Portion (42) is fixed by way of interference fit with the armature spindle (10).
3. rotor according to claim 1, which is characterized in that the structural reinforcement member (40) is two and is located at institute
State the both ends in axial direction of rotor core (20).
4. rotor according to claim 1, which is characterized in that be provided on the inner wall of the rotor core (20) for mentioning
The second reinforcement part (21) of the high rotor core (20) and plastic packaging component (30) bond strength.
5. rotor according to claim 4, which is characterized in that second reinforcement part (21) is to be arranged in the rotor iron
Recessed portion on the inner wall of core (20).
6. rotor according to claim 1, which is characterized in that be fixed at least one on the outer wall of the rotor core (20)
A magnetic shoe (50), the magnetic shoe (50) are pasted on the rotor core (20).
7. rotor according to claim 1, which is characterized in that be fixed at least one on the outer wall of the rotor core (20)
A magnetic shoe (50), the plastic packaging component (30) extend to the outer wall of the rotor core (20), and the magnetic shoe (50) passes through described
Plastic packaging component (30) extends to the part at the rotor core (20) and fixes with the rotor core (20).
8. a kind of motor, which is characterized in that the motor includes rotor of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916648.7A CN107634598B (en) | 2017-09-30 | 2017-09-30 | Rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710916648.7A CN107634598B (en) | 2017-09-30 | 2017-09-30 | Rotor and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107634598A CN107634598A (en) | 2018-01-26 |
| CN107634598B true CN107634598B (en) | 2019-11-15 |
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ID=61104005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710916648.7A Active CN107634598B (en) | 2017-09-30 | 2017-09-30 | Rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107634598B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173366A (en) * | 2018-02-10 | 2018-06-15 | 中山市科艺电机有限公司 | A kind of rotor and the sewing machine energy-saving electric machine and sewing machine with the rotor |
| CN108837932A (en) * | 2018-05-29 | 2018-11-20 | 佛山市顺德区美的洗涤电器制造有限公司 | The housing unit and food refuse disposer of food refuse disposer |
| CN109921530A (en) * | 2019-03-19 | 2019-06-21 | 广东威灵汽车部件有限公司 | Rotor, motor, water pump and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4263711A (en) * | 1977-09-05 | 1981-04-28 | Matsushita Electric Industrial Co., Ltd. | Method of making armature of double insulation construction |
| CN101527480A (en) * | 2009-01-15 | 2009-09-09 | 姜卫亮 | Brushless electric motor insulation rotor and manufacture method thereof |
| CN204794408U (en) * | 2015-07-06 | 2015-11-18 | 广东威灵电机制造有限公司 | Rotor core tip insulation system , rotor subassembly and motor |
| CN205791841U (en) * | 2016-05-27 | 2016-12-07 | 苏州科瓴精密机械科技有限公司 | A kind of rotor, motor and electric power tool |
-
2017
- 2017-09-30 CN CN201710916648.7A patent/CN107634598B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4263711A (en) * | 1977-09-05 | 1981-04-28 | Matsushita Electric Industrial Co., Ltd. | Method of making armature of double insulation construction |
| CN101527480A (en) * | 2009-01-15 | 2009-09-09 | 姜卫亮 | Brushless electric motor insulation rotor and manufacture method thereof |
| CN204794408U (en) * | 2015-07-06 | 2015-11-18 | 广东威灵电机制造有限公司 | Rotor core tip insulation system , rotor subassembly and motor |
| CN205791841U (en) * | 2016-05-27 | 2016-12-07 | 苏州科瓴精密机械科技有限公司 | A kind of rotor, motor and electric power tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107634598A (en) | 2018-01-26 |
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