CN201393103Y - Brushless DC motor rotor - Google Patents
Brushless DC motor rotor Download PDFInfo
- Publication number
- CN201393103Y CN201393103Y CN200920116549U CN200920116549U CN201393103Y CN 201393103 Y CN201393103 Y CN 201393103Y CN 200920116549 U CN200920116549 U CN 200920116549U CN 200920116549 U CN200920116549 U CN 200920116549U CN 201393103 Y CN201393103 Y CN 201393103Y
- Authority
- CN
- China
- Prior art keywords
- brushless
- rotor
- motor
- iron core
- permanent magnet
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a brushless DC motor rotor, which comprises a rotor iron core (7), a rotation shaft (5) and permanent magnets (1), wherein the rotor iron core (7) comprises punching sheets which are overlapped and are connected into a whole, the rotation shaft (5) is fixedly connected with the rotor iron core (7), T-shaped wedges (6) in even number are uniformly distributed on the external surface of the rotor iron core (7), inserting grooves are arranged between the adjacent T-shaped wedges (6), the permanent magnets (1) are correspondingly embedded in the inserting grooves, two sides of the rotor iron core (7) are provided with pressing plates (2) for fixing the permanent magnets (1). After adopting the structure, the brushless DC motor rotor solves the problems of generating vibration and noise when a motor is started and dropping the permanent magnets (1), and has the advantages of simple and reasonable structure, convenient manufacturing and processing, stable and reliable working performance and the like.
Description
Technical field
The utility model relates to the improvement of a kind of brshless DC motor, particularly a kind of brushless DC motor rotor.
Background technology
Brushless DC motor rotor is the core component of direct current machine, it is by the transmission of permanent magnet realizable force, when machine operation, rotor not only bears the impact of transmission power, but also the centrifugal force that produces during the bear rotor high speed rotating, therefore, good and bad performance and the life-span that directly influences direct current machine of the structure of rotor.At present, generally fix between permanent magnet on the brushless DC motor rotor and the rotor core by adhesive, adopt that this is simple and practical, production and processing is convenient, but weak point is owing to be subjected to the motor long-term operation to produce the influence of variations in temperature and adhesive natural aging, bonding force between permanent magnet and the rotor core slowly produces degeneration, and under the centrifugal action that the motor high speed rotating produces, permanent magnet will produce and come off, cause electrical fault, can't run well; For this reason, we have developed a kind of brushless DC motor rotor and have applied for patent, and the patent No. is 2006201079187, and this structure is fine have been solved between permanent magnet and the rotor core and be connected unstable problem, permanent magnet comes off never, has prolonged motor useful life greatly; But after adopting this structure, can produce vibration and noise during electric motor starting, influence motor properties and action effect.Therefore, be badly in need of a kind of brushless DC motor rotor simple and practical, vibration and noise problem in the time of effectively solving starting of exploitation.
Summary of the invention
In order to overcome the above-mentioned disadvantage that existing brushless DC motor rotor exists, the purpose of this utility model provide a kind of simple and reasonable, production and processing convenient, starting steadily, brushless DC motor rotor that sound is light.
The technical scheme that its technical problem that solves the utility model adopts, it comprises rotor core, rotating shaft and permanent magnet, rotor core is made up of the punching stack and is fused, rotating shaft is fixedlyed connected with rotor core, the outer surface of described rotor core is evenly distributed with even number T shape voussoir, constitute slot between the adjacent T shape voussoir, the permanent magnet correspondence is embedded in this slot.
Further improvement of the utility model, described rotor core both sides are provided with the pressing plate of fixed permanent magnet.
After adopting said structure, the utility model has following advantage and effect: the one, and the permanent magnet correspondence is embedded in the slot that constitutes between the adjacent T shape voussoir, the pressing plate of fixed permanent magnet is set in the rotor core both sides again, thereby guarantees that permanent magnet can not come off when the motor high speed rotating; The 2nd, adopt the utility model after, only leave very little fit-up gap between the adjacent permanent magnet, during starting, the magnetic field transition is fast, starting is steadily, sound is light, thereby solves between the permanent magnet problem of excessive generation vibration at interval and noise.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Embodiment
Illustrated in figures 1 and 2, specific embodiments for the utility model brushless DC motor rotor, it comprises rotor core 7, rotating shaft 5 and permanent magnet 1, rotor core 7 is superposeed to form with rivet 4 by punching and is riveted into one, rotating shaft 5 is fixedlyed connected with rotor core 7, the outer surface of described rotor core 7 is evenly distributed with even number T shape voussoir 6, constitute slot between the adjacent T shape voussoir 6, permanent magnet 1 correspondence is embedded in this slot, make and only leave very little fit-up gap between the adjacent permanent magnet, thereby the magnetic field transition is steady when guaranteeing electric motor starting, can not produce vibration and noise; Described rotor core 7 both sides are provided with the pressing plate 2 of fixed permanent magnet 1, thereby have thoroughly solved the problem that permanent magnet 1 comes off and causes motor not run well.
Claims (2)
1, a kind of brushless DC motor rotor, comprise rotor core (7), rotating shaft (5) and permanent magnet (1), rotor core (7) is made up of the punching stack and is fused, rotating shaft (5) is fixedlyed connected with rotor core (7), it is characterized in that: the outer surface of described rotor core (7) is evenly distributed with even number T shape voussoir (6), constitute slot between the adjacent T shape voussoir (6), permanent magnet (1) correspondence is embedded in this slot.
2, according to the described brushless DC motor rotor of claim 1, it is characterized in that: described rotor core (7) both sides are provided with the pressing plate (2) of fixed permanent magnet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116549U CN201393103Y (en) | 2009-03-27 | 2009-03-27 | Brushless DC motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116549U CN201393103Y (en) | 2009-03-27 | 2009-03-27 | Brushless DC motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201393103Y true CN201393103Y (en) | 2010-01-27 |
Family
ID=41599924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920116549U Expired - Fee Related CN201393103Y (en) | 2009-03-27 | 2009-03-27 | Brushless DC motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201393103Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515243A (en) * | 2016-01-20 | 2016-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure of motor and motor with same |
-
2009
- 2009-03-27 CN CN200920116549U patent/CN201393103Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515243A (en) * | 2016-01-20 | 2016-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure of motor and motor with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20110327 |