CN201374596Y - Brushless motor rotor - Google Patents
Brushless motor rotor Download PDFInfo
- Publication number
- CN201374596Y CN201374596Y CN200920112726U CN200920112726U CN201374596Y CN 201374596 Y CN201374596 Y CN 201374596Y CN 200920112726 U CN200920112726 U CN 200920112726U CN 200920112726 U CN200920112726 U CN 200920112726U CN 201374596 Y CN201374596 Y CN 201374596Y
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- rotor
- motor rotor
- electric motor
- brushless electric
- magnet steel
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Abstract
The utility model discloses a brushless motor rotor and resolves the problems that in the prior art, a bonding way is adopted, the flying-off danger of magnets is easily caused, the processing adopting a concave-convex matching magnet integrated type is difficult, deformation occurs easily after sintering, and the requirements on magnetizing apparatuses are high. The brushless motor rotor comprises a rotor core and magnetic steel, wherein the periphery surface of the rotor core is provided with more than two motor rotor teeth in axis direction, the width at the tops of the motor rotor teeth is larger than that at the bottom; and the cross section of the magnetic steel is in sector shape, the shape of two side planes of the sector-shaped magnetic steel is matched with that of the motor rotor teeth, and the amount of the magnetic steel is the same as that of the motor rotor teeth. The brushless motor rotor has the advantages of effectively preventing the magnets from flying out during high-speed rotation of the rotor, effectively lowering production cost and improving finished product ratio.
Description
Technical field
The utility model relates to a kind of brushless electric motor rotor.
Background technology
The use of brushless electric machine is more and more wider in recent years.In the inner-rotor-type brushless motor as a kind of brushless electric machine wherein, magnet steel is arranged on the excircle of rotor, and by adhesive on rotor yoke, but use along with motor, temperature can raise and can reduce bonding strength, and can have magnetic steel ingot and cause the danger of dispersing on the magnet steel because the rotation of rotor produces centrifugal force, and if the number of magnetic poles of rotor increase, prevent that then the reliability that magnetic steel ingot disperses from can reduce.
In the patent of the patent No. 200510064503.6 rotor for brushless motor and brushless electric machine, proposition forms the recess that does not grind at the axis direction of magnet steel inner peripheral surface, form protuberance on the outer peripheral face axis direction of a rotor yoke, the recess of magnet steel matches with the protuberance of rotor yoke.But such designing requirement magnet steel is an integral body, and all-in-one-piece like this magnet steel processing difficulties, sintering again after whole the extrusion.Cause distortion in the sintering process easily, simultaneously to the requirement height of multipole magnetization equipment.
The utility model content
The purpose of this utility model is to provide a kind of brushless electric motor rotor, can effectively solve the danger that the available technology adopting bonded type causes magnetic steel ingot to disperse easily, adopt concavo-convex cooperation magnet steel integral type processing difficulties, sintering is yielding, to the demanding problem of magnetizing equipment.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of brushless electric motor rotor, comprise rotor core and magnet steel, the axis direction of described rotor core outer peripheral face is provided with plural rotor tooth, the width at the top of described rotor tooth is greater than bottom width, described magnet steel cross section is fan-shaped, and the shape of described fan-shaped magnet steel two side planes and the shape of rotor tooth are suitable, and described magnet steel quantity is identical with the number of teeth of motor rotor amount.
Preferably, described rotor tooth comprises connecting portion and limiting section, and described connecting portion lower end is arranged on the rotor core outer peripheral face, and described connecting portion upper end is provided with limiting section; Manufacturing process is simple, do not influence under the long-pending situation of magnetic surface can be preferably fixing magnet steel.
Preferably, described connecting portion is a rectangle, and described limiting section left end and right-hand member are wideer 0.2～1 millimeter than connecting portion respectively; Not good less than 0.2 millimeter limit effect, greater than 1 millimeter long-pending influential to magnetic surface, magnetic surface is long-pending little, it is not enough to exert oneself.
Preferably, described rotor tooth is an even number; The magnet steel number of poles that inserts will occur in pairs.
Preferably, described rotor core is that identical silicon steel sheet of several structures or silicon steel sheet stack are formed; It is fairly simple that silicon steel sheet or silicon steel sheet manufacture above-mentioned shape process, the rate of finished products height.
Preferably, the thickness of described silicon steel sheet or silicon steel sheet is 0.2～2 millimeter; Too thick being unfavorable for processes.
Preferably, the magnet steel N utmost point of insertion and the S utmost point are arranged alternately.
Compared with prior art, the utility model has the advantages that: prevent that effectively magnet steel from flying out when rotor high-speed rotates, effectively reduce production cost, improve rate of finished products.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is that the rotor core of a kind of brushless electric motor rotor embodiment one of the utility model cooperates schematic diagram with magnet steel;
Fig. 2 is the rotor core structure schematic diagram of a kind of brushless electric motor rotor embodiment one of the utility model;
Fig. 3 is the magnet steel structural representation of a kind of brushless electric motor rotor embodiment one of the utility model;
Fig. 4 is the rotor core structure schematic diagram of a kind of brushless electric motor rotor embodiment two of the utility model;
Fig. 5 is the magnet steel structural representation of a kind of brushless electric motor rotor embodiment two of the utility model;
Embodiment
Embodiment one:
Consult the embodiment one of Fig. 1 to Fig. 3 for a kind of brushless electric motor rotor of the utility model, a kind of brushless electric motor rotor, comprise rotor core 1 and magnet steel 2, the axis direction of described rotor core 1 outer peripheral face is provided with eight rotor teeth 11, described rotor tooth 11 comprises connecting portion 111 and limiting section 112, described connecting portion 111 is a rectangle, one end is arranged on rotor core 1 outer peripheral face, the other end is provided with limiting section 112, described limiting section 112 also is a rectangle, two ends, the left and right sides are wideer 0.2～1 millimeter than connecting portion 111 than respectively, and described rotor core 1 is that 0.2-2 millimeter silicon steel sheet or silicon steel sheet 12 are formed by stacking by thickness; Described magnet steel 2 cross sections are fan-shaped, and the shape of the shape of two side planes and rotor tooth 11 is suitable.
During use, between two adjacent rotor teeth 11 of rotor core 1, insert 2, two adjacent magnet steel 2N utmost points of a magnet steel and be arranged alternately, eight magnet steel 2 and some rotor cores 1 composition a kind of brushless electric motor rotors described in the utility model with the S utmost point.
Embodiment two:
Consult Fig. 4, Fig. 5 embodiment two for a kind of brushless electric motor rotor of the utility model, a kind of brushless electric motor rotor, comprise rotor core 1 and magnet steel 2, the axis direction of described rotor core 1 outer peripheral face is provided with eight rotor teeth 11, described rotor tooth 11 cross sections are for trapezoidal, short one is arranged on rotor core 1 outer peripheral face, described rotor core 1 is that 0.2 millimeter silicon steel sheet or silicon steel sheet 12 are formed by stacking by thickness, described magnet steel 2 cross sections are fan-shaped, and two sides shape and rotor tooth 11 shapes are suitable.
During use, between two adjacent rotor teeth 11 of rotor core 1, insert a magnet steel 2, two adjacent magnet steel 2 are the N utmost point, two magnet steel extremely adjacent with N are extremely such being arranged alternately of S, and eight magnet steel 2 and some rotor cores 1 are formed a kind of brushless electric motor rotor described in the utility model.
The above only is the specific embodiment of the utility model the best, but architectural feature of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (7)
1. brushless electric motor rotor, comprise rotor core (1) and magnet steel (2), it is characterized in that: the axis direction of described rotor core (1) outer peripheral face is provided with plural rotor tooth (11), the width at the top of described rotor tooth (11) is greater than bottom width, described magnet steel (2) cross section is fan-shaped, the shape of the shape of described fan-shaped magnet steel (2) two side planes and rotor tooth (11) is suitable, and described magnet steel (2) quantity is identical with rotor tooth (11) quantity.
2. a kind of brushless electric motor rotor as claimed in claim 1, it is characterized in that: described rotor tooth (11) comprises connecting portion (111) and limiting section (112), described connecting portion (111) lower end is arranged on rotor core (1) outer peripheral face, and described connecting portion (111) upper end is provided with limiting section (112).
3. a kind of brushless electric motor rotor as claimed in claim 2 is characterized in that: described connecting portion (111) is a rectangle, and described limiting section (112) left end and right-hand member are wideer 0.2～1 millimeter than connecting portion (111) respectively.
4. a kind of brushless electric motor rotor as claimed in claim 1 is characterized in that: described rotor tooth (11) is an even number.
5. as each a kind of brushless electric motor rotor in the claim 1 to 4, it is characterized in that: described rotor core (1) is formed for several structures identical silicon steel sheet or silicon steel sheet (12) stack.
6. a kind of brushless electric motor rotor as claimed in claim 5 is characterized in that: the thickness of described silicon steel sheet or silicon steel sheet (12) is 0.2～2 millimeter.
7. a kind of brushless electric motor rotor as claimed in claim 4 is characterized in that: the magnet steel of insertion (2) the N utmost point and the S utmost point are arranged alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920112726U CN201374596Y (en) | 2009-01-15 | 2009-01-15 | Brushless motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920112726U CN201374596Y (en) | 2009-01-15 | 2009-01-15 | Brushless motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374596Y true CN201374596Y (en) | 2009-12-30 |
Family
ID=41500677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920112726U Expired - Fee Related CN201374596Y (en) | 2009-01-15 | 2009-01-15 | Brushless motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374596Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368293A (en) * | 2012-03-26 | 2013-10-23 | 珠海格力电器股份有限公司 | Motor rotor structure and motor with same |
| CN107332378A (en) * | 2017-08-25 | 2017-11-07 | 苏州德迈科电机技术有限公司 | Permanent magnet synchronous servo motor rotor magnetic steel Surface Mount fixed structure |
| CN107689697A (en) * | 2017-09-29 | 2018-02-13 | 深圳市大地和电气股份有限公司 | Brshless DC motor |
| CN108134465A (en) * | 2018-03-06 | 2018-06-08 | 珠海凯邦电机制造有限公司 | A kind of p-m rotor and magneto |
| CN110912306A (en) * | 2019-12-11 | 2020-03-24 | 杭州美时美刻物联网科技有限公司 | Rotor structure of permanent magnet servo motor |
-
2009
- 2009-01-15 CN CN200920112726U patent/CN201374596Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368293A (en) * | 2012-03-26 | 2013-10-23 | 珠海格力电器股份有限公司 | Motor rotor structure and motor with same |
| CN107332378A (en) * | 2017-08-25 | 2017-11-07 | 苏州德迈科电机技术有限公司 | Permanent magnet synchronous servo motor rotor magnetic steel Surface Mount fixed structure |
| CN107689697A (en) * | 2017-09-29 | 2018-02-13 | 深圳市大地和电气股份有限公司 | Brshless DC motor |
| CN108134465A (en) * | 2018-03-06 | 2018-06-08 | 珠海凯邦电机制造有限公司 | A kind of p-m rotor and magneto |
| CN110912306A (en) * | 2019-12-11 | 2020-03-24 | 杭州美时美刻物联网科技有限公司 | Rotor structure of permanent magnet servo motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: YING SHILI Effective date: 20111214 Owner name: JIAHE TOOLS CO., LTD. Free format text: FORMER OWNER: JIANG WEILIANG Effective date: 20111214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111214 Address after: 25 No. 321300 Zhejiang province Yongkang City Hardware Technology Industrial Park, Park Avenue South Patentee after: Jiahe Tools Co., Ltd. Address before: 321300 Zhejiang province Yongkang City Park Economic Development Zone South Road No. 25 Yongkang Jiahe Instrument Company Co-patentee before: Ying Shili Patentee before: Jiang Weiliang |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20120115 |