CN202817967U - A motor ensuring uniform air gap between a stator and a rotor - Google Patents
A motor ensuring uniform air gap between a stator and a rotor Download PDFInfo
- Publication number
- CN202817967U CN202817967U CN2012201843631U CN201220184363U CN202817967U CN 202817967 U CN202817967 U CN 202817967U CN 2012201843631 U CN2012201843631 U CN 2012201843631U CN 201220184363 U CN201220184363 U CN 201220184363U CN 202817967 U CN202817967 U CN 202817967U
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- Prior art keywords
- stator
- rotor
- motor
- bearings
- bearing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a motor ensuring uniform air gap between a stator and a rotor. The motor comprise a housing body, a front end cover, a back end cover, a rotor, and a stator. The rotor and the stator are disposed inside the housing body and the rotor is arranged in the stator. The front end cover and the back end cover are disposed on two ends of the housing body, respectively. A bearing pedestal is disposed at the center of the inner side of the back end cover. The motor also comprises two bearings which are successively mounted in the bearing pedestal on the back end cover. The rear end of a main shaft of the stator is disposed in the inner circumferences of the two bearings. The motor increases concentricity degree of the rotor and the stator, prevents eccentric operation of the motor, increases service life of the motor, and guarantees normal operation of the motor.
Description
Technical field
The utility model relates to a kind of guarantee stator and the uniform motor of rotor airgap.
Background technology
Conventional motors is provided with a bearing or without bearing at rear end cap, rotor and stator are located in the housing, rotor is positioned at stator, and the rotor main shaft rear end is located in the axle bed of rear end cap by a bearing, or the rotor main shaft rear end directly is located in the hole seat of rear end cap reservation.For some industrial application, if motor front end cover does not arrange bearing yet or when structure space is compact when not having motor front end cover, at needs with electric machine main shaft and the direct-connected occasion of plant equipment driving shaft, traditional motor only has a bearing or without bearing, rotor is connected with the plant equipment driving shaft with the electric machine main shaft one, and motor stator is connected with the motor fixed installation face of plant equipment with motor housing, if the concentricity error of the driving shaft of plant equipment and motor fixed installation face is larger, just can't guarantee consistency and the uniformity of stator and rotor airgap, rotor main shaft after the assembling and the concentricity of stator just can't guarantee, there is certain eccentricity issues, significantly vibration and noise will appear after motor rotation gets up, affect the normal operation of motor, and because the long-time eccentric operating of motor, also can cause the air gap between motor stator and the rotor even not, cause that easily electric machine temperature rise is higher, affect motor useful life.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of guarantee stator and the uniform motor of rotor airgap, this motor has improved the concentricity of rotor and stator, avoid the eccentric operating of motor, improved the useful life of motor, guaranteed the normal operation of motor.
For solving the problems of the technologies described above, the utility model guarantees that stator and the uniform motor of rotor airgap comprise housing, front end housing, rear end cap, rotor and stator, described rotor and stator are located in the described housing, described rotor is positioned at described stator, described front end housing and rear end cap are located at respectively described housing two ends, the inboard center of described rear end cap is provided with bearing pedestal, this motor also comprises two bearings, described two bearings are located at respectively in the bearing pedestal of described rear end cap successively, and described stator rear-end of spindle is located at the inner ring of described two bearings.
Further, above-mentioned two bearings are rolling bearing, sliding bearing, ball bearing or roller bearing.
Because the utility model guarantees that stator and the uniform motor of rotor airgap have adopted technique scheme, be that this motor comprises housing, front end housing, rear end cap, rotor and stator, rotor and stator are located in the housing, rotor is positioned at stator, front end housing and rear end cap are located at respectively the housing two ends, and the inboard center of rear end cap is provided with bearing pedestal, and this motor also comprises two bearings, two bearings are located at respectively in the bearing pedestal of rear end cap successively, and the stator rear-end of spindle is located at the inner ring of two bearings.This motor has improved the concentricity of rotor and stator, avoids the eccentric operating of motor, has improved the useful life of motor, has guaranteed the normal operation of motor.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is that the utility model is guaranteed stator and the uniform electric machine structure schematic diagram of rotor airgap.
Embodiment
As shown in Figure 1, the utility model guarantees that stator and the uniform motor of rotor airgap comprise housing, front end housing, rear end cap 3, rotor 2 and stator 1, described rotor 2 and stator 1 are located in the described housing, described rotor 2 is positioned at described stator 1, described front end housing and rear end cap 3 are located at respectively described housing two ends, described rear end cap 3 inboard centers are provided with bearing pedestal 31, this motor also comprises two bearings 4, described two bearings 4 are located at respectively in the bearing pedestal 31 of described rear end cap 3 successively, and the inner ring of described two bearings 4 is located in described stator 2 main shafts 21 rear ends.Fig. 1 middle shell and front end housing are not shown.
Further, above-mentioned two bearings 4 can adopt rolling bearing, sliding bearing, ball bearing or roller bearing.
This motor arranges duplex bearing between rotor main shaft and rear end cap, guaranteed the stability that rotor rotates, overcome and a bearing has been set or without the defective of the conventional motors of bearing, improved the concentricity of motor operation course rotor and stator, especially in the situation that the concentricity error of the driving shaft of plant equipment and motor fixed installation face is larger, thereby owing to guaranteed that the air gap between stator and the rotor is even being provided with duplex bearing, so that motor operation temperature rise descends, motor is improved useful life, has guaranteed the normal operation of motor.
Claims (2)
1. guarantee stator and the uniform motor of rotor airgap for one kind, comprise housing, front end housing, rear end cap, rotor and stator, described rotor and stator are located in the described housing, described rotor is positioned at described stator, described front end housing and rear end cap are located at respectively described housing two ends, the inboard center of described rear end cap is provided with bearing pedestal, it is characterized in that: also comprise two bearings, described two bearings are located at respectively in the bearing pedestal of described rear end cap successively, and described stator rear-end of spindle is located at the inner ring of described two bearings.
2. according to claim 1ly guarantee stator and the uniform motor of rotor airgap, it is characterized in that: described two bearings are rolling bearing, sliding bearing, ball bearing or roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201843631U CN202817967U (en) | 2012-04-27 | 2012-04-27 | A motor ensuring uniform air gap between a stator and a rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201843631U CN202817967U (en) | 2012-04-27 | 2012-04-27 | A motor ensuring uniform air gap between a stator and a rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817967U true CN202817967U (en) | 2013-03-20 |
Family
ID=47876775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201843631U Expired - Fee Related CN202817967U (en) | 2012-04-27 | 2012-04-27 | A motor ensuring uniform air gap between a stator and a rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202817967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015217216A1 (en) | 2015-09-09 | 2017-03-09 | Frankl & Kirchner GmbH & Co KG Fabrik für Elektromotoren u. elektrische Apparate | Attachment drive motor assembly for a sewing machine |
-
2012
- 2012-04-27 CN CN2012201843631U patent/CN202817967U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015217216A1 (en) | 2015-09-09 | 2017-03-09 | Frankl & Kirchner GmbH & Co KG Fabrik für Elektromotoren u. elektrische Apparate | Attachment drive motor assembly for a sewing machine |
| EP3141649A1 (en) | 2015-09-09 | 2017-03-15 | Frankl & Kirchner GmbH & Co KG Fabrik für Elektromotoren u. elektrische Apparate | Attachment drive motor assembly for a sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |