CN110661359A - Motor structure for reducing shaft current - Google Patents
Motor structure for reducing shaft current Download PDFInfo
- Publication number
- CN110661359A CN110661359A CN201910942210.5A CN201910942210A CN110661359A CN 110661359 A CN110661359 A CN 110661359A CN 201910942210 A CN201910942210 A CN 201910942210A CN 110661359 A CN110661359 A CN 110661359A
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- CN
- China
- Prior art keywords
- motor
- shaft
- dustproof cover
- driver
- rotor
- Prior art date
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Abstract
The invention relates to a motor structure for reducing shaft current, which comprises a motor rotor, a motor stator, a dustproof cover and a shaft, wherein the shaft is arranged in the motor rotor; the motor stator is arranged at the upper part of the motor rotor; the dustproof cover is arranged at the upper part of the shaft, the top of the shaft is provided with a conduction device, and the conduction device is in contact with the bottom of the dustproof cover. A driver shell is arranged at the upper part of the motor rotor, and a driver is arranged in the driver shell; and a motor wire outlet is arranged on the side surface of the driver shell. The motor structure consists of a stator, a rotor, a shaft, a bearing, a dust cover and a driver. The invention reduces the shaft current by changing the dustproof cover part of the motor, adding the needle guiding device on the dustproof cover part and enabling the shaft to be in contact with the dustproof cover to form a circuit loop. By adopting the structure, the motor has the advantages of low cost, basically unchanged motor structure, unchanged motor production process, good obtained effect and convenience in production, processing and use.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor structure for reducing shaft current.
Background
The existing direct current brushless motor consists of a motor main body and a driver, the motor consists of a stator and a rotor, and the direct current brushless motor can generate shaft current during operation, generate an electric corrosion phenomenon and reduce the service life of the motor. At present, a common mode for reducing shaft current is to use a ceramic bearing, but at present, the ceramic bearing is expensive and is generally used in special industries.
Disclosure of Invention
The invention aims to provide a motor structure for reducing shaft current, wherein a guide pin is arranged at a motor end cover by changing the structure of a motor, so that a current loop is formed at the outer ends of a shaft and the motor, the process is simple, the shaft current is reduced, and the cost is increased by almost zero.
In order to achieve the above object, the present invention has the following technical means.
A motor structure for reducing shaft current comprises a motor rotor, a motor stator, a dustproof cover and a shaft, wherein the shaft is arranged in the motor rotor; the motor stator is arranged at the upper part of the motor rotor; the dustproof cover is arranged at the upper part of the shaft, the top of the shaft is provided with a conduction device, and the conduction device is in contact with the bottom of the dustproof cover.
Further, the conducting device is a metal guide pin or a ball.
Furthermore, a driver shell is arranged at the upper part of the motor rotor, and a driver is arranged in the driver shell; and a motor wire outlet is arranged on the side surface of the driver shell.
The invention has the beneficial effects that: the invention aims to provide a motor structure capable of solving the electric erosion phenomenon generated by direct current brushless current shaft current. The motor structure consists of a stator, a rotor, a shaft, a bearing, a dust cover and a driver. The invention reduces the shaft current by changing the dustproof cover part of the motor, adding the needle guiding device on the dustproof cover part and enabling the shaft to be in contact with the dustproof cover to form a circuit loop. By adopting the structure, the motor has the advantages of low cost, basically unchanged motor structure, unchanged motor production process, good obtained effect and convenience in production, processing and use.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus used in the example of the present invention.
The notation in the figure is: 1. a motor rotor; 2. a motor stator; 3. a dust cover; 4. a driver housing; 5. a driver; 6. a motor outlet; 7. a shaft; 8. and a bearing.
Detailed Description
The invention will be better understood from the following description of specific embodiments thereof with reference to the accompanying drawings and examples.
Examples
The motor structure for reducing shaft current shown in fig. 1 comprises a motor rotor 1, a motor stator 2, a dust cover 3 and a shaft 7, wherein the shaft 7 is arranged inside the motor rotor 1; the motor stator 2 is arranged at the upper part of the motor rotor 1; the dust cover 3 is arranged at the upper part of the shaft 7, and the top of the shaft 7 is provided with a conduction device which is in contact with the bottom of the dust cover 3. A driver shell 4 is arranged at the upper part of the motor rotor 1, and a driver 5 is arranged in the driver shell 4; the side surface of the driver shell 4 is provided with a motor outlet 6. The conducting device is a metal guide pin or a ball.
The motor structure consists of a stator, a rotor, a shaft, a bearing, a dustproof cover and a driver, wherein a conduction device is added on the dustproof cover part of the motor by changing the dustproof cover part, and the conduction device enables the shaft to be in contact with the dustproof cover to form a circuit loop so as to reduce the shaft current. The conducting device is a metal guide pin or a ball, and is installed and used according to the requirement.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (3)
1. A motor structure for reducing shaft current comprises a motor rotor, a motor stator, a dustproof cover and a shaft, wherein the shaft is arranged inside the motor rotor; the motor stator is arranged at the upper part of the motor rotor; the shield sets up the upper portion position at the axle, its characterized in that: the top of the shaft is provided with a conduction device, and the conduction device is in contact with the bottom of the dustproof cover.
2. The reduced shaft current electric machine structure of claim 1, wherein: the conducting device is a metal guide pin or a ball.
3. The reduced shaft current electric machine structure of claim 1, wherein: a driver shell is arranged at the upper part of the motor rotor, and a driver is arranged in the driver shell; and a motor wire outlet is arranged on the side surface of the driver shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942210.5A CN110661359A (en) | 2019-09-30 | 2019-09-30 | Motor structure for reducing shaft current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942210.5A CN110661359A (en) | 2019-09-30 | 2019-09-30 | Motor structure for reducing shaft current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110661359A true CN110661359A (en) | 2020-01-07 |
Family
ID=69038718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910942210.5A Pending CN110661359A (en) | 2019-09-30 | 2019-09-30 | Motor structure for reducing shaft current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110661359A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595171A (en) * | 2013-11-29 | 2014-02-19 | 沈阳工业大学 | Bearing current short-circuiting device |
| US20160226340A1 (en) * | 2013-09-05 | 2016-08-04 | Save Innovations | Current generation device for pipeline |
| CN106505802A (en) * | 2016-12-31 | 2017-03-15 | 合普动力股份有限公司 | Air-cooled integrated electric motor controller |
| CN107681836A (en) * | 2017-11-24 | 2018-02-09 | 合肥巨动力系统有限公司 | A kind of motor for eliminating bearing galvano-cautery |
-
2019
- 2019-09-30 CN CN201910942210.5A patent/CN110661359A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160226340A1 (en) * | 2013-09-05 | 2016-08-04 | Save Innovations | Current generation device for pipeline |
| CN103595171A (en) * | 2013-11-29 | 2014-02-19 | 沈阳工业大学 | Bearing current short-circuiting device |
| CN106505802A (en) * | 2016-12-31 | 2017-03-15 | 合普动力股份有限公司 | Air-cooled integrated electric motor controller |
| CN107681836A (en) * | 2017-11-24 | 2018-02-09 | 合肥巨动力系统有限公司 | A kind of motor for eliminating bearing galvano-cautery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200107 |