CN207184195U - Rotor assembly and motor - Google Patents
Rotor assembly and motor Download PDFInfo
- Publication number
- CN207184195U CN207184195U CN201720805323.7U CN201720805323U CN207184195U CN 207184195 U CN207184195 U CN 207184195U CN 201720805323 U CN201720805323 U CN 201720805323U CN 207184195 U CN207184195 U CN 207184195U
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- tabletting
- rotor
- rotor assembly
- flange
- heat emission
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Abstract
The utility model discloses a kind of rotor assembly and motor, the rotor assembly includes rotor and armature spindle, the both ends of rotor are respectively equipped with the first tabletting and the second tabletting, first tabletting and the second tabletting are connected with being relatively fixed with rotor, the first beam is provided between first tabletting and rotor, the second beam is provided between second tabletting and rotor, rotor, the first tabletting, the second tabletting, the first beam and the equal surrounding rotor axle of the second beam, armature spindle are opened and are relatively fixed with rotor intervals.According to the rotor assembly of the utility model embodiment, good damping effect.
Description
Technical field
It the utility model is related to technical field of power equipment, more particularly to a kind of rotor assembly and with the rotor assembly
Motor.
Background technology
There is noise problem in induction machine, noise divides mechanicalness noise and electromagnetic noise etc..Family expenses induction machine produces noise
Type is mainly electromagnetic noise, produce electromagnetic noise the reason for include electromagnetic design is unreasonable, rotor is eccentric, mains by harmonics contains
Measure high, and these can cause high content harmonic wave between stator and rotor air gap be present, and harmonic wave can produce cutting for certain frequency in rotor
To, radial vibration, when vibration frequency close to system intrinsic frequency when, noise will be produced.Therefore, family expenses class induction machine is made an uproar
Mainly the rotor as caused by harmonic wave is tangential for sound Producing reason, radial vibration.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality
It is to propose a kind of rotor assembly that there is cushioning ability with a new purpose.
The utility model also proposed a kind of motor.
According to the rotor assembly of the utility model embodiment, including rotor and armature spindle, the both ends of the rotor are set respectively
There are the first tabletting and the second tabletting, first tabletting and second tabletting are connected with being relatively fixed with the rotor, institute
State and the first beam is provided between the first tabletting and the rotor, the second damping is provided between second tabletting and the rotor
Pad, the rotor, first tabletting, second tabletting, first beam and second beam are surround
The armature spindle, the armature spindle are opened and are relatively fixed with the rotor intervals.
According to the rotor assembly of the utility model embodiment, good damping effect.
In addition, according to the rotor assembly of the utility model above-described embodiment, there can also be technical characteristic additional as follows：
In one embodiment of the present utility model, the rotor, which is provided with, to be axially extended and through the of the rotor
One heat emission hole, and the rotor is provided with multiple first heat emission holes of circumferentially spaced arrangement, first tabletting and described the
In two tablettings it is at least one be provided with and second heat emission hole of first heat emission hole along the axial face.
In one embodiment of the present utility model, set at least one in first tabletting and second tabletting
There are circumferentially spaced multiple reinforcements and/or the flange flange positioned at inner edge.
In one embodiment of the present utility model, set at least one in first tabletting and second tabletting
Have positioned at inner edge flange flange and around the flange flange arranged for interval and be connected with the flange flange it is multiple add
Strengthening tendons.
In one embodiment of the present utility model, bolt connection is respectively provided with first tabletting and second tabletting
Hole.
In one embodiment of the present utility model, the bolt connection of one in first tabletting and second tabletting
The all edges in hole are provided with tapped flange.
In one embodiment of the present utility model, first beam and second beam are respectively provided with center and led to
Hole, and be respectively provided with first beam and second beam around the spaced apart teeth portion of the central through hole, institute
Teeth portion is stated with multiple first heat emission holes to stagger.
In one embodiment of the present utility model, the both ends of the rotor are respectively equipped with the first groove and the second groove,
At least a portion of first tabletting and first beam is arranged in first groove, and second tabletting and
At least a portion of second beam is arranged in second groove.
In one embodiment of the present utility model, first tabletting and second tabletting by high polymer material or
Metal material is made, and first beam and second beam are yielding rubber.
In one embodiment of the present utility model, the armature spindle is relative with first tabletting and second tabletting
It is permanently connected.
The utility model also proposed a kind of motor, including：Field frame assembly and rotor assembly, the rotor assembly are rotatable
Ground is located in the field frame assembly, and the rotor assembly is according to foregoing rotor assembly.
According to the motor of the utility model embodiment, include foregoing rotor assembly, good damping effect.
Brief description of the drawings
Fig. 1 is the schematic diagram of the rotor assembly of the utility model one embodiment.
Fig. 2 is the sectional view of the rotor assembly shown in Fig. 1.
Fig. 3 is the exploded perspective view of the rotor assembly shown in Fig. 1.
Fig. 4 is the schematic diagram of the first tabletting in Fig. 1.
Fig. 5 is the schematic diagram of the second tabletting in Fig. 1.
Fig. 6 is the schematic diagram that rotor and the first beam or the second beam coordinate in Fig. 1.
Fig. 7 is the schematic diagram of rotor in Fig. 1.
Fig. 8 is the schematic diagram of the first beam in Fig. 1.
Reference：Rotor assembly 1, rotor 11, armature spindle 12, the first tabletting 13, the second tabletting 14, the first beam
15, the second beam 16, the first heat emission hole 101, flange flange 103, the second heat emission hole 102, reinforcement 104, flange 105, spiral shell
Bolt connecting hole 106, central through hole 107, the first groove 108, the second groove 109, teeth portion 1010
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
To solve induction machine noise problem in correlation technique, the utility model patent provides a kind of vibration damping rotor structure,
Make every effort to weaken from structure, eliminate that the rotor as caused by harmonic wave is tangential, radial vibration.In order to solve some skills in correlation technique
Art problem, the utility model provide a kind of new rotor assembly 1.
The rotor assembly 1 of the utility model embodiment is described with reference to the accompanying drawings.
Such as Fig. 1 and Fig. 2, according to the rotor assembly 1 of the utility model embodiment, including rotor 11 and armature spindle 12.
Specifically, rotor 11 and armature spindle 12 are relatively fixed, and rotor 11 can be rotated together with rotor driven axle 12.Rotor
11 both ends are respectively equipped with the first tabletting 13 and the second tabletting 14, and the first tabletting 13 and the second tabletting 14 are relatively solid with rotor 11
Surely connect, the first beam 15 is provided between the first tabletting 13 and rotor 11, the is provided between the second tabletting 14 and rotor 11
Two beams 16, wherein, rotor 11, the first tabletting 13,16 equal ring of the second tabletting 14, the first beam 15 and the second beam
Set around armature spindle 12, armature spindle 12 is spaced apart with rotor 11, and armature spindle 12 is relatively fixed with rotor 11.
According to the rotor assembly 1 of the utility model embodiment, when the air gap part of rotor 11 has high content harmonic wave, harmonic wave
Tangential, the radial vibration of certain frequency can be produced in rotor 11, still, due to being spaced apart between rotor 11 and armature spindle 12, and
And there is provided the first beam 15 and the progress damping of the second beam 16, it is thereby achieved that effectively subtracting to rotor assembly 1
Shake, avoids the vibrations of rotor 11 from being delivered on armature spindle 12, and the energy-absorbing function of the first beam 15 and the second beam 16
The damping effect to rotor 11 can also be improved.
Wherein, armature spindle 12 can be connected with being relatively fixed by the first tabletting 13 and the second tabletting 14 with rotor 11,
Armature spindle 12 can be connected with being relatively fixed by other structures with rotor 11, such as armature spindle 12 is arranged to subtract with first
The form that the shake beam 16 of pad 15 and second connects with being relatively fixed.
With reference to Fig. 3 to Fig. 7, in one embodiment of the present utility model, rotor 11 is provided with and axially extends and run through
First heat emission hole 101 of rotor 11, and rotor 11 is provided with multiple first heat emission holes 101 of circumferentially spaced arrangement, the first pressure
At least one the second heat emission hole 102 being provided with the first heat emission hole 101 face vertically in the tabletting 14 of piece 13 and second.If
The first heat emission hole 101 and the second heat emission hole 102 are put, gas can be circulated by the first heat emission hole 101 and the second heat emission hole 102,
So as to realize the radiating to parts such as rotor 11, the first tabletting 13, the second tablettings 14.
Preferably, the first heat emission hole 101 of insertion can be set on rotor 11, and in the first tabletting 13 and the second tabletting
The second heat emission hole 102 is respectively provided with 14, can so form the thermal vias of connection, so as to realize to rotor 11, the first tabletting
13 and the entirety of the grade of the second tabletting 14 radiated, improve the effect of radiating.
Certainly, the shape of heat emission hole may be used also along the axially extending of rotor 11, such as the first heat emission hole 101
To be arranged to or be tilted by a predetermined angle setting vertical with the line of armature spindle 12, the radiating to rotor 11 can also be equally realized.Using
During this structure radiating, the second heat emission hole 102 can be not provided with the first tabletting 13, the second tabletting 14.
Such as Fig. 4 and Fig. 5, in some examples of the present utility model, at least one in the first tabletting 13 and the second tabletting 14
It is individual to be provided with circumferentially spaced multiple reinforcements 104, by setting reinforcement 104, the knot of corresponding tabletting can be improved
Structure intensity, moreover, in the presence of there is provided the tabletting of reinforcement 104, beam can be easy to the stable positioning of beam
Energy-absorbing and damping.
The cooperation intensity between tabletting and rotor 11 can also be improved.
In addition, such as Fig. 4 and Fig. 5, can also be set at least one tabletting in the first tabletting 13 and the second tabletting 14
Flange flange 103 positioned at inner edge, can be with because the first tabletting 13 and the second tabletting 14 are all that surrounding rotor axle 12 is set
The inner peripheral surface of first tabletting 13 and the second tabletting 14 is set on the side face of armature spindle 12, therefore, in the first tabletting 13 and
When flange flange 103 is set at least one tabletting in two tablettings 14, flange flange 103 can be socketed in the week of armature spindle 12
On face, the mating surface area of tabletting and armature spindle 12 is so improved, effectively improves the stabilization that armature spindle 12 is connected with tabletting
Property.
Preferably, reinforcement 104 and flange flange 103 can also be set in tabletting simultaneously.Specifically, in this practicality
In new one embodiment, at least one flange being provided with positioned at inner edge in the first tabletting 13 and the second tabletting 14 turns over
Side 103 and the circular arranged for interval of flange flange 103 and the multiple reinforcements 104 being connected with flange flange 103.Multiple reinforcements
104 are connected with flange flange 103, reinforcement structure are not only itself provides to tabletting, and the structure of flange flange 103 is entered
Reinforcement is gone, because flange flange 103 is finally enclosed on armature spindle 12, due to the supporting role of reinforcement 104, Ke Yibao
Demonstration orchid flange 103 can keep the position with the stable cooperation of armature spindle 12, turn so that flange flange 103 is stably socketed in
On the surface of sub- axle 12.Therefore, set reinforcement 104 that flange flange 103 can be allowd stably to be socketed in armature spindle 12
Surface on, so as to improve the fitment stability of tabletting (the first tabletting 13 and the second tabletting 14) and armature spindle 12.
Wherein, the lateral surface of one is provided with flange flange 103 and/or reinforcement in the first tabletting 13 and the second tabletting 14
104.Comprise at least：In first tabletting 13 flange flange 103 and/or reinforcement are provided with the surface of the second tabletting 14
104；Second tabletting 14 is provided with flange flange 103 and/or reinforcement 104 on the surface of the first tabletting 13；First tabletting
Flange flange 103 and/or reinforcement 104 are provided with 13 on the surface of the second tabletting 14, the second tabletting 14 deviates from first
Flange flange 103 and/or reinforcement 104 are provided with the surface of tabletting 13.
Such as figure, such as Fig. 5, in some embodiments of the utility model, it is respectively provided with the first tabletting 13 and the second tabletting 14
Bolt connecting hole 106.The first tabletting 13 and the second tabletting 14 and rotor 11 can be connected as one by bolt, realize
One tabletting 13 and the second tabletting 14 are stably connected with rotor 11.
Preferably, the second heat emission hole 102 is provided with the first tabletting 13 and the second tabletting 14, first is set on rotor 11
Heat emission hole 101, the first heat emission hole 101 and the second heat emission hole 102 are relative, and in other words, the both ends of the first heat emission hole 101 are equipped with
Second heat emission hole 102 (in the first tabletting 13 and the second tabletting 14).
Further, the part in the first heat emission hole 101 and the second heat emission hole 102 is arranged to bolt connecting hole
106, for the first tabletting 13, the tabletting 14 of rotor 11 and second are connected together.Wherein, the spiral shell of tabletting and rotor 11 is connected
Bolt can be arranged to have gap with the first heat emission hole 101.
Further, such as Fig. 5, the 106 weeks edges of the bolt connecting hole of one are provided with band in the first tabletting 13 and the second tabletting 14
The flange 105 of internal thread.That is, bolt pass through the first tabletting 13 and the second tabletting 14 in one and rotor 11 after,
It is threadedly coupled with another in the first tabletting 13 and the second tabletting 14.
It is, of course, preferable to ground, by the first tabletting of screw bolt passes 13, rotor 11, the attaching nut of the second tabletting 14, Ke Yigeng
Add the connection for facilitating rotor 11 and tabletting.
In addition, with reference to Fig. 6 to Fig. 8, in one embodiment of the present utility model, the first beam 15 and the second beam
16 are respectively provided with central through hole 107, and are respectively provided with the first beam 15 and the second beam 16 and are spaced cloth around central through hole 107
The teeth portion 1010 put, teeth portion 1010 stagger with multiple first heat emission holes 101.Teeth portion 1010 is set effectively to separate rotor 11
With tabletting (tabletting 13 of rotor 11 and first, the tabletting 14 of rotor 11 and second).And by the heat emission hole 101 of teeth portion 1010 and first every
Open, the radiating effect to rotor assembly 1 can be improved in order to airflow.
Such as Fig. 2, in one embodiment of the present utility model, the both ends of rotor 11 are respectively equipped with the first groove 108 and
At least a portion of two grooves 109, the first tabletting 13 and the first beam 15 is arranged in the first groove 108, and the second tabletting
14 and second at least a portion of beam 16 be arranged in the second groove 109.Further improve rotor 11, beam and
The stability coordinated between tabletting.
Such as Fig. 2, the first beam 15 is arranged in the first groove 108, the second beam 16 is arranged at the second groove 109
It is interior, then pushed down by pressing plate.
Preferably, the first tabletting 13 and the second tabletting 14 are made by high polymer material or metal material, the first beam
15 and second beam 16 be yielding rubber.So as to improve the stability and damping performance of whole rotor assembly 1.
In addition, with reference to previous embodiment, in some specific examples of the present utility model, rotor assembly 1 by armature spindle 12, subtract
Shake rubber, cage rotor 11, the first tabletting 13, the second tabletting 14 and fastening bolt composition, and cage rotor 11 is with circumferentially
Some first heat emission holes 101 of distribution；
Further, the first tabletting 13 has circumferentially distributed some second heat emission holes 102, can when motor operates
Strengthen motor internal and outside air circulation, have positive effect to motor radiating；
Preferably, the first tabletting 13 has circumferentially distributed some reinforcements 104, can be effectively increased strength of pressed pieces；
Further, the first tabletting 13 has flange flange 103, is effectively increased the bonded area with armature spindle 12, increase
Bond strength；
Further, the second tabletting 14 also has circumferentially distributed some second heat emission holes 102, some reinforcements
104, and the architectural feature such as flange flange 103；
Advantageously, the second tabletting 14 has circumferentially distributed some flanging bores, has internal thread inside flanging bore, for
Bolt is fastenedly connected；
First tabletting 13 and the material of the second tabletting 14 can be ABS, PA66 Polymer material or metal material
As long as material or the other type materials for meeting related newly energy (intensity, rigidity, life-span etc.) demand；
Further, vibration isolation rubber has a pilot hole, and circumferentially distributed some teeth portion 1010；
Advantageously, as long as vibration-damping rubber material can be the elastomeric materials such as silica gel, neoprene or meet related
Newly other type materials of energy (vibration damping, aging life-span etc.) demand；
Preferably, after vibration isolation rubber assembles with cage rotor 11, teeth portion 1010 should stagger with the first heat emission hole 101, it is impossible to
There is overlapping phenomenon；
In the assembling process of rotor assembly 1 of the present utility model,
Cage rotor 11 is put into equipment, frock, then armature spindle 12 is fitted into the endoporus of cage rotor 11, armature spindle 12
There is appropriate gap between periphery and endoporus, armature spindle 12 is also to be positioned by equipment, frock, can as long as can meet
Manufacturing others positioning method is also feasible；
Two vibration isolation rubbers (beam) are respectively fitted into armature spindle 12 from both sides, and make one end face of vibration isolation rubber and mouse
The end contact of cage rotor 11, while ensure that teeth portion 1010 should stagger with the first heat emission hole 101, it is impossible to there is overlapping phenomenon；
Two tablettings are assembled from the both ends of armature spindle 12, ensure that tabletting and rubber surface are brought into close contact, while tabletting
It is interference fitted with armature spindle 12, while ensures that the second heat emission hole 102 in tabletting aligns with the first heat emission hole 101；
By bolt through the second heat emission hole 102 in the second tabletting 14, and carried out with the internal thread on the second heat emission hole 102
It is fastenedly connected；
In addition, the utility model also proposed a kind of motor, including：Field frame assembly and rotor assembly 1, rotor assembly 1 can
Rotationally it is located in field frame assembly, rotor assembly 1 is according to foregoing rotor assembly 1.
Motor of the present utility model is as a result of foregoing rotor assembly 1, it is possible to achieve the damping of rotor assembly 1, from
And the vibrations of motor are reduced, and reduce the outside propagation of vibrations.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (10)
- A kind of 1. rotor assembly, it is characterised in that including：Rotor, the both ends of the rotor are respectively equipped with the first tabletting and the second tabletting, first tabletting and second tabletting It is connected with being relatively fixed with the rotor, is provided with the first beam between first tabletting and the rotor, described second The second beam is provided between tabletting and the rotor；Armature spindle, the rotor, first tabletting, second tabletting, first beam and second damping Pad is opened and is relatively fixed with the rotor intervals around the armature spindle, the armature spindle.
- 2. rotor assembly according to claim 1, it is characterised in that the rotor is provided with and axially extends and run through institute The first heat emission hole of rotor is stated, and the rotor is provided with multiple first heat emission holes of circumferentially spaced arrangement, first pressure In piece and second tabletting it is at least one be provided with and second heat emission hole of first heat emission hole along the axial face.
- 3. rotor assembly according to claim 1, it is characterised in that in first tabletting and second tabletting extremely Few one is provided with circumferentially spaced multiple reinforcements and/or the flange flange positioned at inner edge.
- 4. rotor assembly according to claim 3, it is characterised in that in first tabletting and second tabletting extremely Few one be provided with positioned at the flange flange of inner edge and the circular flange flange arranged for interval and with the flange flange phase Multiple reinforcements even.
- 5. rotor assembly according to claim 1, it is characterised in that have in first tabletting and second tabletting There is bolt connecting hole.
- 6. rotor assembly according to claim 5, it is characterised in that one in first tabletting and second tabletting Bolt connecting hole week along being provided with tapped flange.
- 7. rotor assembly according to claim 2, it is characterised in that first beam and second beam are equal It is respectively provided with central through hole, and on first beam and second beam around the central through hole arranged for interval Teeth portion, the teeth portion staggers with multiple first heat emission holes.
- 8. according to the rotor assembly any one of claim 1-6, it is characterised in that the both ends of the rotor are respectively equipped with At least a portion of first groove and the second groove, first tabletting and first beam is arranged at first groove It is interior, and at least a portion of second tabletting and second beam is arranged in second groove.
- 9. according to the rotor assembly any one of claim 1-6, it is characterised in that the armature spindle and the described first pressure Piece and second tabletting connect with being relatively fixed.
- A kind of 10. motor, it is characterised in that including：Field frame assembly；Rotor assembly, the rotor assembly are rotatably arranged in the field frame assembly, and the rotor assembly is will according to right Seek the rotor assembly any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720805323.7U CN207184195U (en) | 2017-07-03 | 2017-07-03 | Rotor assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720805323.7U CN207184195U (en) | 2017-07-03 | 2017-07-03 | Rotor assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184195U true CN207184195U (en) | 2018-04-03 |
Family
ID=61735549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720805323.7U Active CN207184195U (en) | 2017-07-03 | 2017-07-03 | Rotor assembly and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294245A (en) * | 2017-07-03 | 2017-10-24 | 广东威灵电机制造有限公司 | Rotor assembly and motor |
-
2017
- 2017-07-03 CN CN201720805323.7U patent/CN207184195U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294245A (en) * | 2017-07-03 | 2017-10-24 | 广东威灵电机制造有限公司 | Rotor assembly and motor |
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