CN212850010U - Rotor structure of motor - Google Patents
Rotor structure of motor Download PDFInfo
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- CN212850010U CN212850010U CN202021166492.9U CN202021166492U CN212850010U CN 212850010 U CN212850010 U CN 212850010U CN 202021166492 U CN202021166492 U CN 202021166492U CN 212850010 U CN212850010 U CN 212850010U
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- rotor
- motor shaft
- ball bearing
- deep groove
- groove ball
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Abstract
The utility model discloses a rotor structure of a motor, which relates to the technical field of motors and comprises a sun gear which is positioned in a shell and can be penetrated by a motor shaft and a fixed seat used for fixing the rotor shell; the sun wheel is connected with the fixed seat. Aiming at the technical problem of sun gear noise caused by poor stability of the rotating operation of the rotor shell, a transitional fixing seat for fixing the sun gear on the rotor shell is eliminated, the assembly precision is improved, and the running noise of the sun gear is reduced; the rotor casing is changed into a split design, so that cost is reduced and efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of motors, concretely relates to rotor structure of motor.
Background
In the structure of the motor, a stator core is fixed on a stator core seat, the stator core seat is fixed on a motor shaft, and a rotor shell is fixed on a fixed seat. The rotor case is matched on the motor shaft through a deep groove ball bearing. The fixed seat is provided with a sun wheel. The fixing seat is fixed on the rotor shell through a fastening screw. The rotor casing is an integrated structure, and is high in cost and poor in processing manufacturability. The stator core is fixed on the stator core seat, and then the stator core seat is fixed on the motor shaft, the stator core seat occupies the matching length of the rotor shell on the motor shaft, the rotor shell swings and vibrates greatly when rotating, and the sun gear fixed on the rotor shell can generate operation noise. The sun gear is fixed on the rotor shell through the fixing seat, and the sun gear is fixed on the rotor shell in a transition mode, so that the assembly precision is reduced, and the noise is increased.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
Aiming at the technical problem of sun gear noise caused by poor stability of the rotating operation of the rotor shell, the utility model provides a rotor structure of a motor, which cancels a transitional fixing seat that a sun gear is fixed on the rotor shell, improves the assembly precision and reduces the running noise of the sun gear; the rotor casing is changed into a split design, so that cost is reduced and efficiency is improved.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
a rotor structure of a motor comprises a sun gear which is positioned in a shell and can be penetrated by a motor shaft, and a fixed seat for fixing a rotor shell; the sun wheel is connected with the fixed seat.
The sun gear is directly arranged on the fixed seat, and the bearing chamber of the fixed seat and the matching gear of the sun gear are clamped and processed at one time, so that the precision of parts is high. The fixed seat of the rotor shell is removed from the transition installation of the sun gear, and the cost of the motor is reduced. The sun gear is directly arranged on the fixed seat, so that the precision of parts is high, and the noise is low during operation. The rotor shell is processed by stamping, so that the cost is low.
Optionally, the hub cover comprises a first hub cover, a first end cover, a rotor shell, a fixing seat, a sun gear, an inner gear ring, a second end cover and a second hub cover, wherein the first hub cover, the first end cover, the rotor shell, the fixing seat, the sun gear, the inner gear ring, the second end cover and the second hub cover are sequentially arranged in the shell from one end of the shell.
Optionally, one side of the first end cover is connected with the first hub cover, the first end cover is fixedly connected with one end of a motor shaft, an extension part on the other side of the first end cover keeps a distance from the motor shaft, a stator core is arranged on the outer side of the extension part, and the rotor shell is connected with the fixed seat.
Optionally, a first deep groove ball bearing and a second deep groove ball bearing are arranged at the matching position of the fixed seat and the motor shaft; and a spacer bush is arranged between the first deep groove ball bearing and the second deep groove ball bearing, and the spacer bush is sleeved on the outer side of one end of the motor shaft close to the first end cover.
Optionally, the inner gear ring is in interference fit with the casing.
Optionally, the fixing seat includes a first fixing portion and a second fixing portion connected together, the first fixing portion is connected with the rotor casing, and the second fixing portion is located between the extension portion and the motor shaft.
Optionally, a spacer bush is arranged between the second fixing portion and the motor shaft.
Optionally, a first deep groove ball bearing and a second deep groove ball bearing are respectively arranged at two ends of the spacer sleeve.
Optionally, a third deep groove ball bearing is arranged between the first end cover and the casing.
Optionally, the second end cover is fixedly connected with the second hub cover, and a fourth deep groove ball bearing is arranged between the second end cover and the casing.
Optionally, the second end cover is fixedly connected with the second hub cover, and a fourth deep groove ball bearing is arranged between the second end cover and the casing.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
according to the rotor structure of the motor, the sun gear is directly mounted on the fixing seat, the bearing chamber of the fixing seat and the matching gear of the sun gear are clamped and machined at one time, and the precision of parts is high. The fixed seat of the rotor shell is removed from the transition installation of the sun gear, and the cost of the motor is reduced. The sun gear is directly arranged on the fixed seat, so that the precision of parts is high, and the noise is low during operation. The rotor shell is processed by stamping, so that the cost is low.
Drawings
Fig. 1 is a schematic view of a rotor structure of an electric machine according to an embodiment of the present invention.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The utility model discloses in words such as first, second, be for the description the utility model discloses a technical scheme is convenient and set up, and does not have specific limiting action, is general finger, right the technical scheme of the utility model does not constitute limiting action. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, a rotor structure of an electric motor includes a sun gear 8 located in a housing 101 and penetrated by a motor shaft 1, and a fixing seat 7 for fixing a rotor housing 6; the sun wheel 8 is connected with the fixed seat 7. The sun gear 8 is directly arranged on the fixed seat 7, and the bearing chamber of the fixed seat 7 and the matching gear of the sun gear 8 are clamped and processed at one time, so that the precision of parts is high. The fixed seat of the rotor shell is removed from the transition installation of the sun gear, and the cost of the motor is reduced. The sun gear 8 is directly arranged on the fixed seat 7, the precision of parts is high, and the noise is low during operation. The rotor shell 6 is processed by stamping, and the cost is low.
Example 2
As shown in fig. 1, the present embodiment provides a rotor structure of an electric machine, which can be improved as follows compared with embodiment 1: the motor comprises a first hub cover 201, a first end cover 4, a rotor housing 6, a fixed seat 7, a sun gear 8, an inner gear ring 801, a second end cover 41 and a second hub cover 202 which are arranged in the housing 101 in sequence from one end of the housing 101 and can be penetrated by a motor shaft 1.
Optionally, one side of the first end cap 4 is connected to the first hub cap 201, the first end cap 4 is fixedly connected to one end of the motor shaft 1, an extension portion 401 on the other side of the first end cap 4 is spaced from the motor shaft 1, a stator core 5 is disposed outside the extension portion 401, and the rotor housing 6 is connected to the fixing base 7.
In an optional embodiment, a first deep groove ball bearing 9 and a second deep groove ball bearing 11 are arranged at the matching position of the fixed seat 7 and the motor shaft 1; and a spacer bush 10 is arranged between the first deep groove ball bearing 9 and the second deep groove ball bearing 11, and the spacer bush 10 is sleeved on the outer side of one end of the motor shaft 1 close to the first end cover 4.
Alternatively, the inner gear ring 801 is in interference fit with the housing 101. The outer side of the casing 101 is provided with a hub 11. The matching parts of the first end cover 4 and the second end cover 41 and the motor shaft 1 are provided with flat keys 3.
Example 3
As shown in fig. 1, the present embodiment provides a rotor structure of an electric machine, which can be improved as follows compared with embodiment 1 or 2: the fixing base 7 includes a first fixing portion 701 and a second fixing portion 702 connected together, the first fixing portion 701 is connected with the rotor housing 6, and the second fixing portion 702 is located between the extension portion 401 and the motor shaft 101.
In an alternative embodiment, the rotor housing 6 includes a first member 61 and a second member 62 connected together, the first member 61 is connected to a first fixing portion 701, the stator core 5 is disposed between the second member 62 and the extension portion 401, and the stator core 5 is fixed to the extension portion 401. Alternatively, a spacer 10 is disposed between the second fixing portion 702 and the motor shaft 1. Optionally, two ends of the spacer sleeve 10 are respectively provided with a first deep groove ball bearing 9 and a second deep groove ball bearing 11. Optionally, a deep groove ball bearing iii 104 is disposed between the first end cap 4 and the casing 101.
Optionally, the second end cover 41 is fixedly connected with the second hub cover 202, and a fourth deep groove ball bearing 105 is arranged between the second end cover 41 and the casing 101.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (9)
1. A rotor structure of a motor is characterized by comprising a sun gear which is positioned in a shell and can be penetrated by a motor shaft, and a fixed seat for fixing the rotor shell;
the sun wheel is connected with the fixed seat.
2. The rotor structure of an electric motor according to claim 1, comprising a first hub cover, a first end cover, a rotor housing, a fixing seat, a sun gear, an inner gear ring, a second end cover and a second hub cover, which are sequentially arranged in the housing from one end of the housing and can be penetrated by the motor shaft.
3. The rotor structure of an electric machine according to claim 2, wherein one side of the first end cap is connected to a hub cap, the first end cap is fixedly connected to one end of a motor shaft, an extension part on the other side of the first end cap is spaced from the motor shaft, a stator core is disposed outside the extension part, and the rotor housing is connected to the fixing base.
4. The rotor structure of an electric machine according to claim 2, wherein a first deep groove ball bearing and a second deep groove ball bearing are arranged at the matching position of the fixed seat and the motor shaft; and a spacer bush is arranged between the first deep groove ball bearing and the second deep groove ball bearing, and the spacer bush is sleeved on the outer side of one end of the motor shaft close to the first end cover.
5. The rotor structure of an electric motor according to claim 2, wherein the ring gear is interference-fitted with the housing.
6. The rotor structure of an electric machine according to claim 3, wherein the fixing base includes a first fixing portion and a second fixing portion connected together, the first fixing portion being connected to the rotor housing, the second fixing portion being located between the extension portion and the motor shaft.
7. The rotor structure of an electric machine according to claim 6, wherein a spacer is provided between the second fixing portion and the shaft of the electric machine.
8. The rotor structure of an electric machine according to claim 7, wherein both ends of the spacer are respectively provided with a first deep groove ball bearing and a second deep groove ball bearing.
9. The rotor structure of an electric machine according to claim 2, wherein a third deep groove ball bearing is provided between the first end cover and the machine case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021166492.9U CN212850010U (en) | 2020-06-22 | 2020-06-22 | Rotor structure of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021166492.9U CN212850010U (en) | 2020-06-22 | 2020-06-22 | Rotor structure of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212850010U true CN212850010U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021166492.9U Active CN212850010U (en) | 2020-06-22 | 2020-06-22 | Rotor structure of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212850010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654127A (en) * | 2020-06-22 | 2020-09-11 | 浙江尤奈特电机有限公司 | Rotor structure of a motor |
-
2020
- 2020-06-22 CN CN202021166492.9U patent/CN212850010U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654127A (en) * | 2020-06-22 | 2020-09-11 | 浙江尤奈特电机有限公司 | Rotor structure of a motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321300 no.287, Lingshi Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province Patentee after: Zhejiang Unitech Electric Co.,Ltd. Address before: 321300 no.287, Lingshi Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG UNITE MOTOR Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |