CN210927233U - Motor rotor structure - Google Patents
Motor rotor structure Download PDFInfo
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- CN210927233U CN210927233U CN201921949155.4U CN201921949155U CN210927233U CN 210927233 U CN210927233 U CN 210927233U CN 201921949155 U CN201921949155 U CN 201921949155U CN 210927233 U CN210927233 U CN 210927233U
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- bearing
- main shaft
- sleeve
- rotor structure
- magnet steel
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Abstract
The utility model provides an electric motor rotor structure, including main shaft, sleeve, magnet steel, first bearing and second bearing, the main shaft is the cylinder axle construction of external diameters such as entire body, sleeve interference pressure is joined in marriage on the main shaft, the magnet steel supports and leans on a telescopic terminal surface, first bearing supports and leans on telescopic another terminal surface, the second bearing is installed keep away from the tip of first bearing on the main shaft. The utility model discloses compare in prior art, the main shaft entire body external diameter is the same, only needs the finish machining once, and the concentricity is high, and the equilibrium is high when the rotor rotates, improves motor moving rotational speed upper limit. First bearing and magnet steel are spacing through the sleeve, and the structure is simpler.
Description
Technical Field
The utility model relates to a brushless permanent-magnet machine technical field of dust catcher, concretely relates to electric motor rotor structure.
Background
The shaft of the existing high-speed brushless dust collector motor adopts a step shaft, because the finish machining of the shaft is repeated turning, the coaxiality is influenced, and when the motor rotates at a high speed, the balance is poor and the processing cost is higher.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an electric motor rotor structure.
In order to achieve the above object, the technical solution of the present invention is: the utility model provides a motor rotor structure, includes main shaft, sleeve, magnet steel, first bearing and second bearing, the main shaft is the cylindrical shaft structure of external diameter such as entire body, sleeve interference pressure fit is in on the main shaft, the magnet steel supports and leans on telescopic an terminal surface, first bearing supports and leans on telescopic another terminal surface, the second bearing is installed keep away from the tip of first bearing on the main shaft.
The utility model discloses compare in prior art, the main shaft entire body external diameter is the same, only needs the finish machining once, and the concentricity is high, and the equilibrium is high when the rotor rotates, improves motor moving rotational speed upper limit. First bearing and magnet steel are spacing through the sleeve, and the structure is simpler.
Further, the wall thickness of the sleeve is 0.5-3 mm.
By adopting the preferable scheme, the weight of the sleeve can be minimized and the axial bending strength of the sleeve can be ensured.
Further, the sleeve is made of aluminum or aluminum alloy.
With the preferred scheme, the weight of the rotor can be reduced.
Further, the magnetic steel is bonded on the main shaft through glue.
Adopt above-mentioned preferred scheme, make things convenient for the installation of magnet steel.
Furthermore, the first bearing inner ring is in transition fit with the periphery of the main shaft.
Adopt above-mentioned preferred scheme, make things convenient for the installation of first bearing.
Further, the fit between the inner ring of the second bearing and the periphery of the main shaft adopts interference fit.
By adopting the preferable scheme, the mounting position of the second bearing on the main shaft can be ensured through the pressing jig without an additional positioning structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Names of corresponding parts represented by numerals and letters in the drawings:
10-a main shaft; 20-a sleeve; 30-magnetic steel; 40-a first bearing; 50-second bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a motor rotor structure includes a main shaft 10, a sleeve 20, a magnetic steel 30, a first bearing 40 and a second bearing 50, the main shaft 10 is a cylindrical shaft structure with an outer diameter equal to the whole body, the sleeve 20 is press-fitted on the main shaft 10 in an interference manner, the magnetic steel 30 abuts against one end surface of the sleeve 20, the first bearing 40 abuts against the other end surface of the sleeve 20, and the second bearing 50 is installed on the main shaft 10 at an end portion far away from the first bearing.
The beneficial effect of adopting above-mentioned technical scheme is: the main shaft has the same outer diameter, only needs finish machining once, has high concentricity, high balance degree when the rotor rotates, and improves the upper limit of the rotating speed of the motor. First bearing and magnet steel are spacing through the sleeve, and the structure is simpler.
In other embodiments of the present invention, the wall thickness of the sleeve 20 is 0.5-3 mm. The beneficial effect of adopting above-mentioned technical scheme is: the weight of the sleeve can be minimized and the axial bending strength of the sleeve can be ensured.
In other embodiments of the present invention, the sleeve 20 is made of aluminum or aluminum alloy. The beneficial effect of adopting above-mentioned technical scheme is: the weight of the rotor can be reduced.
In other embodiments of the present invention, the magnetic steel 30 is adhered to the main shaft 10 by glue. The beneficial effect of adopting above-mentioned technical scheme is: the magnetic steel is convenient to install.
In other embodiments of the present invention, the fit between the inner ring of the first bearing 40 and the outer periphery of the main shaft 10 is a transition fit. The beneficial effect of adopting above-mentioned technical scheme is: the installation of the first bearing is facilitated.
In other embodiments of the present invention, the fit between the inner ring of the second bearing 50 and the outer periphery of the main shaft 10 is an interference fit. The beneficial effect of adopting above-mentioned technical scheme is: the mounting position of the second bearing on the main shaft can be ensured through the pressing fixture without an additional positioning structure.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (6)
1. The utility model provides a motor rotor structure, its characterized in that includes main shaft, sleeve, magnet steel, first bearing and second bearing, the main shaft is the cylindrical shaft structure of external diameter such as entire body, the sleeve interference pressure fit is in on the main shaft, the magnet steel support by on telescopic terminal surface, first bearing support by on telescopic another terminal surface, the second bearing is installed keep away from the tip of first bearing on the main shaft.
2. An electric machine rotor construction according to claim 1, characterized in that the wall thickness of the sleeve is 0.5-3 mm.
3. The electric machine rotor structure of claim 2, wherein the sleeve is aluminum or an aluminum alloy.
4. The electric machine rotor structure of claim 1, wherein the magnetic steel is bonded to the main shaft by glue.
5. The electric machine rotor structure of claim 1, wherein the fit between the first bearing inner race and the spindle outer periphery is a transition fit.
6. The electric machine rotor structure of claim 5, wherein the fit between the second bearing inner race and the spindle outer periphery is an interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949155.4U CN210927233U (en) | 2019-11-12 | 2019-11-12 | Motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921949155.4U CN210927233U (en) | 2019-11-12 | 2019-11-12 | Motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210927233U true CN210927233U (en) | 2020-07-03 |
Family
ID=71346311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921949155.4U Active CN210927233U (en) | 2019-11-12 | 2019-11-12 | Motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210927233U (en) |
-
2019
- 2019-11-12 CN CN201921949155.4U patent/CN210927233U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220317 Address after: 410000 Room 301, building 1-2, block A1, sunshine 100 new town, No. 518, Section 1, south 2nd Ring Road, Yuelu street, Yuelu District, Changsha City, Hunan Province (cluster registration) Patentee after: Changsha turbulence Technology Co.,Ltd. Address before: 310018 room 2022, building 3, Tianfu Caizhi building, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: Plus plus zero Technology (Hangzhou) Co.,Ltd. |