CN201928101U - Rotor sheet of permanent magnet motor - Google Patents
Rotor sheet of permanent magnet motor Download PDFInfo
- Publication number
- CN201928101U CN201928101U CN201120049694XU CN201120049694U CN201928101U CN 201928101 U CN201928101 U CN 201928101U CN 201120049694X U CN201120049694X U CN 201120049694XU CN 201120049694 U CN201120049694 U CN 201120049694U CN 201928101 U CN201928101 U CN 201928101U
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotor sheet
- permanent magnet
- motor
- rotor punching
- 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 rotor sheet for a permanent magnet motor, which comprises a rotor sheet body. A shaft hole is arranged at the center of the rotor sheet body, a key slot is arranged in the shaft hole, a plurality of salient poles are uniformly distributed on the periphery of the rotor sheet body peripherally, magnetic steel holding grooves with closed peripheries are arranged on the salient poles, and an air gap groove is formed between each two adjacent salient poles. Compared with an existing rotor sheet structure, the rotor sheet is provided with the relatively independent salient pole structures on the periphery, can increase magnetic resistance performance of a motor rotor, and strengthens torque output of the motor when in low speed. The magnetic steel holding groove with the closed peripheries are arranged on the salient poles of the rotor sheet, so that a completely closed magnetic holding groove can be formed after rotor sheets are overlapped, magnetic steel can be embedded into the magnetic steel holding groove conveniently and simultaneously can assuredly avoid being separated from the rotor under centrifugal force during operation of the motor, manufacturability of placement of the magnetic steel is also simplified, and the U-shaped air gap between each two adjacent salient poles can greatly reduce flux leakage between adjacent N and S magnetic poles.
Description
Technical field
The utility model relates to the rotor of magneto, particularly a kind of rotor punching that can effectively improve the motor runnability.
Background technology
Existing rotor structure for permanent magnet motor has surface-mount type and embedded two kinds, and the surface-mount type structure is that permanent magnet is directly sticked on the rotor outer surface, protects magnet steel with outer jointing jacket again.Because the rotor air gap of motor is very little, adopt very thin stainless steel coiled sheet circle to weld or twine with no latitude band so outer jointing jacket is general; The former can cause that outward appearance is not good, dynamic balancing is difficult because the rotor appearance is not a full circle, particularly the unusual difficulty of the big long rotor unshakable in one's determination of the external diameter technology of being inserted in; And the latter is got loose by heat ageing in running easily, poor reliability.
Existing embedded rotor structure cylindrical is a full circle, magnet steel evenly distributes and embeds the position of rotor near outer surface, though solved above problem, but there is the serious problem of leakage field between magnetic pole and the magnetic pole, under the prerequisite of identical effective material, directly influenced the energy index of motor, can export and will reach identical power, then effective material of motor must increase, thereby material cost is increased.
Summary of the invention
The utility model has overcome above-mentioned the deficiencies in the prior art, and a kind of leakage field that reduces is provided, and improves the rotor punching of motor output torque and response accuracy.
The technical solution of the utility model is achieved in that
A kind of permanent magnet machine rotor punching, comprise the rotor punching body, center at the rotor punching body is provided with axis hole, in axis hole, be provided with keyway, circumferentially be evenly distributed with a plurality of salient poles in the external all upper edges of rotor punching, the magnet steel resettlement groove of sealing is provided with the air gap groove around offering on salient pole between the adjacent in twos salient pole.
As preferably, described air gap groove takes the shape of the letter U.
As preferably, described keyway is made up of notch, groove body and bottom land, and the groove body comprises the left groove body that links to each other with axis hole, right groove body, and the length of wherein left groove body is greater than the length of right groove body.The groove body has long and short two bar limit, is convenient to distinguish when lamination the positive and negative of punching, guarantees the burr direction unanimity of punching, the evenness of rotor core behind the raising lamination.
In order to reduce the motor moment of inertia, improve the motor response accuracy, as preferably, on the rotor punching body, be evenly distributed with a plurality of holes around axis hole.
As preferably, described hole is a scallop hole.
As preferably, the quantity in hole is 4.
Adopted the beneficial effects of the utility model of technique scheme to be:
One, the relatively independent salient-pole structure that the punching periphery forms can strengthen the magnetic resistance performance of rotor, thereby the output of the moment when strengthening motor low speed, on the punching salient pole, be provided with the magnet steel resettlement groove of periphery sealing, make the magnet steel resettlement groove of the complete closure that forms behind the punching lamination, can embed magnet steel easily, guarantee that simultaneously magnet steel can not simplify the manufacturability that magnet steel is laid because of centrifugal action breaks away from rotor in that motor is in service yet; U type air gap between adjacent two salient poles, can significantly reduce the leakage field between adjacent N, the S magnetic pole, make the more concentrated stator coil that passes of the magnetic poles line of force, motor can improve the induced potential of motor under identical effective electromagnetic material like this, and then improves the output torque of motor.
Two, keyway groove body has the length both sides, is convenient to when lamination to guarantee the burr direction unanimity of punching by the positive and negative of length limit identification punching, can improve the evenness of rotor core behind the lamination.
Three, four scallop holes that rotor punching evenly is provided with near the axis hole position help motor and reduce moment of inertia, improve the motor response accuracy.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is as follows:
Embodiment: a kind of permanent magnet machine rotor punching, as shown in Figure 1, comprise rotor punching body 1, be provided with axis hole 2 at the center of rotor punching body 1, in axis hole 2, be provided with keyway 3, circumferentially be evenly distributed with a plurality of salient poles 4 in rotor punching body 1 periphery upper edge, on salient pole 4, offer the magnet steel resettlement groove 5 of sealing all around, be provided with the air gap groove 6 of U-shaped between the adjacent in twos salient pole 4.
Described keyway 3 is made up of with bottom land 9 notch 7, groove body 8, and groove body 8 comprises the left groove body 10 that links to each other with axis hole 2, right groove body 11, and the length of wherein left groove body 10 is greater than the length of right groove body 11.Keyway groove body has the length both sides, is convenient to when lamination to guarantee the burr direction unanimity of punching by the positive and negative of length limit identification punching, can improve the evenness of rotor core behind the lamination.
On rotor punching body 1, be evenly distributed with 4 and be fan-shaped hole 12 around axis hole 2.Reduce moment of inertia thereby help motor, improve the motor response accuracy.
Claims (6)
1. permanent magnet machine rotor punching, comprise the rotor punching body, center at the rotor punching body is provided with axis hole, in axis hole, be provided with keyway, it is characterized in that: circumferentially be evenly distributed with a plurality of salient poles in the external all upper edges of rotor punching, the magnet steel resettlement groove of sealing is provided with the air gap groove around offering on salient pole between the adjacent in twos salient pole.
2. a kind of permanent magnet machine rotor punching according to claim 1 is characterized in that: described air gap groove takes the shape of the letter U.
3. a kind of permanent magnet machine rotor punching according to claim 1 is characterized in that: described keyway is made up of notch, groove body and bottom land, and the groove body comprises the left groove body that links to each other with axis hole, right groove body, and the length of wherein left groove body is greater than the length of right groove body.
4. a kind of permanent magnet machine rotor punching according to claim 1 is characterized in that: be evenly distributed with a plurality of holes around axis hole on the rotor punching body.
5. a kind of permanent magnet machine rotor punching according to claim 4 is characterized in that: described hole is a scallop hole.
6. according to claim 4 or 5 described a kind of permanent magnet machine rotor punchings, it is characterized in that: the quantity in hole is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120049694XU CN201928101U (en) | 2011-02-25 | 2011-02-25 | Rotor sheet of permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120049694XU CN201928101U (en) | 2011-02-25 | 2011-02-25 | Rotor sheet of permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201928101U true CN201928101U (en) | 2011-08-10 |
Family
ID=44431936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120049694XU Expired - Fee Related CN201928101U (en) | 2011-02-25 | 2011-02-25 | Rotor sheet of permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201928101U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231035A (en) * | 2013-05-09 | 2013-08-07 | 乔志洪 | Core type electromagnetic stirring roller of magnetic steering structure |
| CN103701237A (en) * | 2013-12-17 | 2014-04-02 | 山东华力电机集团股份有限公司 | Rotor punching sheet for inner rotor permanent magnet motor |
| CN107508395A (en) * | 2016-06-14 | 2017-12-22 | 中电电机股份有限公司 | Permanent magnet machine rotor |
-
2011
- 2011-02-25 CN CN201120049694XU patent/CN201928101U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231035A (en) * | 2013-05-09 | 2013-08-07 | 乔志洪 | Core type electromagnetic stirring roller of magnetic steering structure |
| CN103701237A (en) * | 2013-12-17 | 2014-04-02 | 山东华力电机集团股份有限公司 | Rotor punching sheet for inner rotor permanent magnet motor |
| CN107508395A (en) * | 2016-06-14 | 2017-12-22 | 中电电机股份有限公司 | Permanent magnet machine rotor |
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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: 20110810 Termination date: 20140225 |