CN110932435A - Novel shock attenuation rotor and motor - Google Patents
Novel shock attenuation rotor and motor Download PDFInfo
- Publication number
- CN110932435A CN110932435A CN201911260665.5A CN201911260665A CN110932435A CN 110932435 A CN110932435 A CN 110932435A CN 201911260665 A CN201911260665 A CN 201911260665A CN 110932435 A CN110932435 A CN 110932435A
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- China
- Prior art keywords
- iron core
- rotor
- protrusion
- core
- outer rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
Abstract
The invention relates to the technical field of motor equipment, and provides a novel damping rotor which comprises an outer rotor iron core and an inner rotor iron core arranged in the outer rotor iron core, wherein the outer rotor iron core and the inner rotor iron core are coaxially arranged, a gap is formed between the outer rotor iron core and the inner rotor iron core, and a damping material is filled in the gap; a first limiting structure is arranged at the middle position corresponding to the outer rotor iron core and the inner rotor iron core and used for limiting the mutual radial movement and axial movement of the inner rotor iron core, the outer rotor iron core and the damping material; second limiting structures are arranged on two sides of the outer rotor iron core and used for limiting axial movement between the outer rotor iron core and the damping material; still provide a novel shock attenuation motor, including foretell novel shock attenuation rotor. The invention has the advantages of simple assembly, reliable limit and small working vibration.
Description
Technical Field
The invention relates to the technical field of motor equipment, in particular to a novel damping rotor and a motor.
Background
In the permanent magnet motor, in order to reduce the vibration when the motor is loaded, a damping material is added between a rotor and a rotor shaft so as to achieve the aim of reducing the vibration; meanwhile, the prior art generally divides the rotor core into two parts: inner rotor iron core and outer rotor iron core, the corresponding convex part of inner and outer rotor design, and coaxial symmetry is placed, and leave certain clearance, fill up with shock-absorbing material and form shock-absorbing rotor, prior art shock-absorbing rotor, in radial direction, can guarantee to play spacingly to shock-absorbing material through the combination of inner and outer rotor iron core, but in axial direction, shock-absorbing material unrestricted structure, lead to in long-term on-load operation, because the stress of inside directly acts on axial shock-absorbing material, lead to shock-absorbing material to drop easily, especially the shock-absorbing material of marginal part, if drop, will lead to inner rotor iron core and outer rotor iron core relaxation dislocation, thereby arouse the motor to produce the noise, vibration range increase and a series of trouble.
Disclosure of Invention
The invention provides a novel damping rotor and a motor, wherein the inner rotor core and a damping material are doubly limited by a first limiting structure and a second limiting structure, so that the technical problem can be effectively solved.
The novel damping rotor comprises an outer rotor iron core and an inner rotor iron core arranged in the outer rotor iron core, wherein the outer rotor iron core and the inner rotor iron core are coaxially arranged, a gap is formed between the outer rotor iron core and the inner rotor iron core, and damping materials are filled in the gap; a first limiting structure is arranged at the middle position corresponding to the outer rotor iron core and the inner rotor iron core and used for limiting the radial movement and the axial movement of the inner rotor iron core, the outer rotor iron core and the damping material; and second limiting structures are arranged at positions, close to the two ends, of the outer rotor iron core and are used for limiting axial movement between the outer rotor iron core and the damping material.
In one embodiment, the first retention structure comprises a protrusion and a recess, the protrusion being received in the recess; the protrusion is arranged on the outer rotor iron core, the groove is arranged on the inner rotor iron core, or the protrusion is arranged on the inner rotor iron core, and the groove is arranged on the outer rotor iron core.
In one embodiment, the protrusions are uniformly distributed on the outer wall surface of the inner rotor core in the circumferential direction, and accordingly, the grooves are uniformly distributed on the inner wall surface of the outer rotor core in the circumferential direction.
In one embodiment, the second limiting structure comprises a clamping groove arranged on the outer rotor iron core, and the damping material is filled in the clamping groove.
In one embodiment, the slots are uniformly distributed on the inner wall surface of the outer rotor core along the circumferential direction.
In one embodiment, the groove and the slot are formed by a plurality of convex block groups, all the convex block groups are uniformly distributed on the inner wall surface of the outer rotor core in the circumferential direction, the convex block groups are sequentially divided into a first convex block, a second convex block, a third convex block and a fourth convex block from top to bottom, the four convex blocks are arranged on the same axis of the outer rotor core, the slot is formed between the first convex block and the second convex block and between the third convex block and the fourth convex block, and the groove is formed between the second convex block and the third convex block.
In one embodiment, the first bump height is greater than the second bump height, and the fourth bump height is greater than the third bump height.
In one embodiment, the outer wall surface of the middle position of the inner rotor iron core is provided with an iron core layer, and the thickness of the iron core layer is smaller than the height of the protrusion.
In one embodiment, the inner rotor core and the outer rotor core are made by laminating or casting.
The present invention also provides a novel damped motor, in one embodiment, including a novel damped rotor as in any one of the embodiments described above.
Compared with the prior art, the novel damping rotor and the motor provided by the invention at least have the following beneficial effects:
according to the novel damping rotor provided by the invention, the first limiting structure and the second limiting structure are arranged between the inner rotor iron core and the outer rotor iron core and filled with damping materials, so that the filling interval of the damping materials is effectively enlarged, the vibration generated by the rotation of the whole rotor is further reduced, the displacement of the damping materials is subjected to double axial limitation by using the first limiting structure and the second limiting structure, the problem that the damping materials are axially fallen and lose efficacy due to the expected load of a motor is solved, particularly the damping materials at the edge part, a series of faults such as loosening and dislocation of the inner rotor iron core and the outer rotor iron core, noise generation and vibration amplitude increase of the motor are solved, meanwhile, the filling interval of the damping materials is enlarged by using the first limiting structure and the second limiting structure, and the vibration generated by the rotor in the rotation process is further reduced.
The novel damping motor provided by the invention has the beneficial effects because the novel damping rotor comprises the novel damping rotor.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view A of the novel damping rotor damping material of an embodiment of the present invention after filling;
FIG. 2 is a perspective view of the structure of the inner rotor core of the novel damped rotor of the present invention;
FIG. 3 is a top view of the structure of the inner rotor core of the novel damped rotor of the present invention;
fig. 4 is a perspective view showing the structure of an outer rotor core of the novel damping rotor according to the embodiment of the present invention;
fig. 5 is a structural plan view of an outer rotor core of the novel vibration damping rotor according to an embodiment of the present invention;
FIG. 6 is a perspective view of the novel damping rotor according to the present invention after the inner rotor core and the outer rotor core are assembled;
FIG. 7 is a perspective view A of the inner rotor core and the outer rotor core of the novel damping rotor according to the embodiment of the present invention;
FIG. 8 is a perspective view B of the inner rotor core and the outer rotor core of the novel damping rotor according to the embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view B of the new damped rotor damper material after filling in accordance with an embodiment of the present invention;
in the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Reference numerals:
10-outer rotor iron core, 11-convex block group, 111-first convex block, 112-second convex block, 113-third convex block,
114-a fourth bump, 20-an inner rotor core, 21-an iron core layer, 30-a gap, 40-a first limiting structure, 41-a protrusion, 42-a groove, 50-a second limiting structure, 51-a clamping groove and 60-a damping material.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1, the novel damping rotor of the present invention includes an outer rotor core 10 and an inner rotor core 20 disposed inside the outer rotor core 10, wherein the outer rotor core 10 and the inner rotor core 20 are coaxially disposed with a gap 30 therebetween, and the gap 30 is filled with a damping material 60; a first limit structure 40 is arranged at a corresponding middle position of the outer rotor core 10 and the inner rotor core 20, and the first limit structure 40 is used for limiting the radial movement and the axial movement of the inner rotor core 20, the outer rotor core 10 and the damping material 60 relative to each other; second limit structures 50 are disposed on two sides of the outer rotor core 10, and the second limit structures 50 are used for limiting axial movement between the outer rotor core 10 and the damping material 60.
Specifically, it should be noted that the damping material 60 is located between the inner rotor core 20 and the outer rotor core 10, and can directly affect the displacement between the inner rotor core 20 and the outer rotor core 10, and the damping material 60 is limited, that is, the phase change can be achieved to limit the inner rotor core 20 and the outer rotor core 10, but in the axial direction, the existing rotor has no reliable limit to the damping material 60, and in the long-term on-load operation, vibration and extrusion occur between the inner rotor core 20 and the outer rotor core 10, and the generated stress directly acts on the damping material 60, so that the damping material 60 falls off along the axial direction, especially the damping material 60 at the edge portions of the inner rotor core 20 and the outer rotor core 10. The first limiting structure 40 and the second limiting structure 50 are arranged between the inner rotor core 20 and the outer rotor core 10 and filled with the damping material 60, the filling interval of the damping material 60 is effectively increased, vibration generated by rotation of the whole rotor is further reduced, double axial limitation is performed on displacement of the damping material 60 by the first limiting structure 40 and the second limiting structure 50, the problem that the damping material 60 axially falls off and fails due to expected load of a motor is solved, particularly the damping material 60 at the edge part is solved, a series of faults that the inner rotor core 20 and the outer rotor core 10 are loosened and dislocated, noise and vibration amplitude of the motor are increased and the like are solved, meanwhile, the filling interval of the damping material 60 is increased by the first limiting structure 40 and the second limiting structure 50, and vibration generated in the rotation process of the rotor is further reduced.
Referring to fig. 1-8, in one example, the first stopper structure 40 includes a protrusion 41 and a groove 42, the protrusion 41 being received in the groove 42; wherein projections 41 are provided on outer rotor core 10 and grooves 42 are provided on inner rotor core 20, or projections 41 are provided on inner rotor core 20 and grooves 42 are provided on outer rotor core 10.
Specifically, in one example, the protrusions 41 are uniformly distributed on the outer wall surface of the inner rotor core 20 in the circumferential direction, and accordingly, the grooves 42 are uniformly distributed on the inner wall surface of the outer rotor core 10 in the circumferential direction.
Specifically, it should be noted that, the protrusion 41 is disposed on the inner rotor core 20, the groove 42 is fixed on the outer rotor core 10, the protrusion 41 is clamped into the groove 42, and the protrusion 41 and the groove 42 are both overlapped in the axial direction, the axial limit of the inner rotor core 20 and the outer rotor core 10 is realized by the axial limit of the protrusion 41 and the groove 42, and the shock absorbing material 60 is also filled between the protrusion 41 and the groove 42, so that the filled shock absorbing material 60 is axially limited by the protrusion 41 and the groove 42, and in sum, the axial movement of the inner rotor core 20, the outer rotor core 10 and the shock absorbing material 60 relative to each other is limited by the first limiting structure 40; meanwhile, the damping material 60 is filled in the gap 30 between the outer rotor core 10 and the inner rotor core 20, so that the filled damping material 60 is radially limited by the protrusion 41 and the groove 42, and the damping material 60 is also filled between the protrusion 41 and the groove 42, so that the damping material 60 radially limits the outer rotor core 10 and the inner rotor core 20, in sum, the radial movement of the inner rotor core 20, the outer rotor core 10 and the damping material 60 relative to each other is limited by the first limiting structure 40.
Referring to fig. 1 to 8, in one example, the second limiting structure 50 includes a clamping groove 51 disposed on the outer rotor core 10 or the inner rotor core 20, and the damping material 60 is filled in the clamping groove 51; the engaging grooves 51 are uniformly distributed on the inner wall surface of the outer rotor core 10 in the circumferential direction.
Specifically, it should be noted that the damping material 60 is filled in the clamping groove 51, and the damping material 60 is axially positioned by the inner wall of the clamping groove 51, so that the damping material 60 is limited by the second limiting structure 50 in the axial movement.
Referring to fig. 1 to 8, in an example, each of the grooves 42 and the slots 51 is formed by a plurality of bump groups 11, all the bump groups 11 are uniformly distributed on the inner wall surface of the outer rotor core 10 in the circumferential direction, the bump groups 11 are sequentially divided into a first bump 111, a second bump 112, a third bump 113, and a fourth bump 114 from top to bottom, the four bumps are on the same axis of the outer rotor core 10, the slots 51 are formed between the first bump 111 and the second bump 112 and between the third bump 113 and the fourth bump 114, and the grooves 42 are formed between the second bump 112 and the third bump 113.
Specifically, it should be noted that, the first projection 111, the second projection 112, the third projection 113 and the fourth projection 114 are all fixed on the outer rotor core 10 and are overlapped in the axial direction of the outer rotor core 10, so that the formed slot 51 and the groove 42 are closed in the axial direction of the rotor and are not closed in the radial direction of the rotor, thereby realizing the double axial positioning of the damping material 60; meanwhile, the shock-absorbing materials 60 filled in the gaps 30 also exist outside the four bumps, and the radial positioning of the shock-absorbing materials 60 can be realized by utilizing the limit of the four bumps; and utilize draw-in groove 51 intussuseption to fill damping material 60, effectively improve the shock attenuation space between inner rotor core 20 and outer rotor core 10, utilize sufficient space to execute elasticity and the elasticity that damping material 60 produced, further reduce the vibration that the rotor produced at the rotation in-process to prevent that the iron core dislocation from droing.
Referring to fig. 9, in particular, in one example, the height of the first bump 111 is greater than the height of the second bump 112, and the height of the fourth bump 114 is greater than the height of the third bump 113; an iron core layer 21 is arranged on the outer wall surface of the middle position of the inner rotor iron core 20, and the thickness of the iron core layer 21 is smaller than the height of the protrusion 41.
Specifically, it should be noted that, in fig. 9, the outer diameter of the inner rotor core 20 itself is Φ a, the outer diameter of the core layer 21 of the inner rotor core 20 is Φ B, and the outer diameter of the protrusion 41 of the inner rotor core 20 is Φ C, where Φ a is less than Φ B and Φ C is less than Φ C, which aims to make the assembly more reliable, and the arrangement of the core layer 21 also enables the contact area between the damping material 60 and the inner rotor core 20 to be larger, thereby improving the damping effect; the inner diameters of the second protrusion 41 and the third protrusion 41 of the outer rotor core 10 are the same and are phi D, the inner diameters of the first protrusion 41 and the fourth protrusion 41 of the outer rotor core 10 are the same and are phi E, wherein phi A is more than phi E and less than phi D, and phi A is more than phi E to ensure reliable assembly, meanwhile, phi E is less than phi D to improve the contact area of the first lug 111 and the fourth lug 114 with the damping material 60 in the axial direction, and the first lug 111 and the fourth lug 114 are both positioned on two sides of the outer rotor core 10, so that the limiting reliability of the damping material 60 in the axial direction in the gap 30 is improved, and the damping material 60 of the novel damping rotor is further prevented from axially falling off and failing due to long-term load.
In one example, the inner rotor core 20 and the outer rotor core 10 may be each formed by lamination or casting.
The invention also provides a novel damping motor which comprises the novel damping rotor in any one of the embodiments.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A novel damping rotor comprises an outer rotor iron core and an inner rotor iron core arranged in the outer rotor iron core, wherein the outer rotor iron core and the inner rotor iron core are coaxially arranged, and a gap is arranged between the outer rotor iron core and the inner rotor iron core;
a first limiting structure is arranged at the middle position corresponding to the outer rotor iron core and the inner rotor iron core and used for limiting the radial movement and the axial movement of the inner rotor iron core, the outer rotor iron core and the damping material;
and second limiting structures are arranged at positions, close to the two ends, of the outer rotor iron core and are used for limiting axial movement between the outer rotor iron core and the damping material.
2. The novel damped rotor of claim 1 wherein said first stop structure comprises a protrusion and a recess, said protrusion received in said recess;
wherein the protrusion is arranged on the outer rotor core, the groove is arranged on the inner rotor core, or
The protrusion is arranged on the inner rotor iron core, and the groove is arranged on the outer rotor iron core.
3. The novel shock absorbing rotor as set forth in claim 2, wherein said protrusions are uniformly distributed on the outer wall surface of said inner rotor core in the circumferential direction, and correspondingly, said grooves are uniformly distributed on the inner wall surface of said outer rotor core in the circumferential direction.
4. The novel damping rotor as claimed in claim 3, wherein the second limiting structure comprises a slot provided on the outer rotor core or the inner rotor core, and the damping material is filled in the slot.
5. The novel damping rotor as claimed in claim 4, wherein the slots are uniformly distributed on the inner wall surface of the outer rotor core along the circumferential direction.
6. The novel damping rotor as claimed in claim 5, wherein the grooves and the slots are formed by a plurality of protrusion sets, each protrusion set comprises a first protrusion, a second protrusion, a third protrusion and a fourth protrusion along the axial direction of the outer rotor core or the inner rotor core, the slots are formed between the first protrusion and the second protrusion and between the third protrusion and the fourth protrusion, and the grooves are formed between the second protrusion and the third protrusion.
7. The novel damped rotor of claim 6 wherein said first lobe height is greater than said second lobe height and said fourth lobe height is greater than a third lobe height.
8. The novel damping rotor as claimed in any one of claims 3 to 5, wherein the outer wall surface of the middle position of the inner rotor core is provided with an iron core layer, and the thickness of the iron core layer is smaller than the height of the protrusion.
9. The novel shock absorbing rotor as claimed in any one of claims 1 to 5, wherein said inner rotor core and said outer rotor core are made by laminating or casting.
10. A new damped motor comprising a new damped rotor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260665.5A CN110932435B (en) | 2019-12-10 | 2019-12-10 | Novel shock attenuation rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911260665.5A CN110932435B (en) | 2019-12-10 | 2019-12-10 | Novel shock attenuation rotor and motor |
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| Publication Number | Publication Date |
|---|---|
| CN110932435A true CN110932435A (en) | 2020-03-27 |
| CN110932435B CN110932435B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911260665.5A Active CN110932435B (en) | 2019-12-10 | 2019-12-10 | Novel shock attenuation rotor and motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104113A (en) * | 2020-08-10 | 2020-12-18 | 珠海格力电器股份有限公司 | Stator assembly and installation method thereof, magnetic suspension bearing, compressor and electric appliance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06261507A (en) * | 1993-03-08 | 1994-09-16 | Matsushita Electric Ind Co Ltd | Rotor for induction motor |
| CN203942346U (en) * | 2014-06-20 | 2014-11-12 | 彭晨阳 | A kind of rotor |
| JP2015142436A (en) * | 2014-01-29 | 2015-08-03 | 株式会社富士通ゼネラル | Rotor and permanent magnet motor |
| CN206250931U (en) * | 2016-10-08 | 2017-06-13 | 珠海凯邦电机制造有限公司 | Cage rotor and motor |
| CN207459849U (en) * | 2017-09-30 | 2018-06-05 | 广东威灵电机制造有限公司 | Rotor assembly |
-
2019
- 2019-12-10 CN CN201911260665.5A patent/CN110932435B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06261507A (en) * | 1993-03-08 | 1994-09-16 | Matsushita Electric Ind Co Ltd | Rotor for induction motor |
| JP2015142436A (en) * | 2014-01-29 | 2015-08-03 | 株式会社富士通ゼネラル | Rotor and permanent magnet motor |
| CN203942346U (en) * | 2014-06-20 | 2014-11-12 | 彭晨阳 | A kind of rotor |
| CN206250931U (en) * | 2016-10-08 | 2017-06-13 | 珠海凯邦电机制造有限公司 | Cage rotor and motor |
| CN207459849U (en) * | 2017-09-30 | 2018-06-05 | 广东威灵电机制造有限公司 | Rotor assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104113A (en) * | 2020-08-10 | 2020-12-18 | 珠海格力电器股份有限公司 | Stator assembly and installation method thereof, magnetic suspension bearing, compressor and electric appliance |
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| Publication number | Publication date |
|---|---|
| CN110932435B (en) | 2021-05-25 |
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