CN101527476A - Brushless electric motor rotor - Google Patents
Brushless electric motor rotor Download PDFInfo
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- CN101527476A CN101527476A CN200910095686A CN200910095686A CN101527476A CN 101527476 A CN101527476 A CN 101527476A CN 200910095686 A CN200910095686 A CN 200910095686A CN 200910095686 A CN200910095686 A CN 200910095686A CN 101527476 A CN101527476 A CN 101527476A
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- rotor
- motor rotor
- electric motor
- brushless electric
- magnet steel
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Abstract
The invention discloses a brushless electric motor rotor, resolving the danger in the prior art that the magnetic blocks are easy to disperse due to the adoption of adhesion type and the integral process of magnet is difficult, deformation often occurs when sintering and the requirement on magnetizing equipment is high due to the adoption of concave-convex coordination. The brushless electric motor rotor comprises a rotor iron core and magnetic steels; over two motor rotor teeth are arranged at the external periphery of the rotor iron core along the axial direction; the width of the top of the motor rotor teeth is larger than the width of the bottom thereof; the transverse section of the magnetic steels is of a fan shape; the shape of the two side planes of the fan-shaped magnetic steels is matched with the shape of the motor rotor teeth; and the number of the magnetic steels is equal to the number of the motor rotor teeth. The invention has the advantages that the brushless electric motor rotor can effectively prevent the magnet from dispersing when the rotor rotates at a high speed, effectively reduce the production cost and improve yield.
Description
Technical field
The present invention 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.
Summary of the invention
The object of the present invention 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 present invention is achieved by 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, advantage of the present invention is: 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 invention will be further described below in conjunction with accompanying drawing:
Fig. 1 cooperates schematic diagram for the rotor core of a kind of brushless electric motor rotor embodiment one of the present invention with magnet steel;
Fig. 2 is the rotor core structure schematic diagram of a kind of brushless electric motor rotor embodiment one of the present invention;
Fig. 3 is the magnet steel structural representation of a kind of brushless electric motor rotor embodiment one of the present invention;
Fig. 4 is the rotor core structure schematic diagram of a kind of brushless electric motor rotor embodiment two of the present invention;
Fig. 5 is the magnet steel structural representation of a kind of brushless electric motor rotor embodiment two of the present invention;
Embodiment
Embodiment one:
Consult the embodiment one of Fig. 1 to Fig. 3 for a kind of brushless electric motor rotor of the present invention, 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 of the present invention with the S utmost point.
Embodiment two:
Consult Fig. 4, Fig. 5 embodiment two for a kind of brushless electric motor rotor of the present invention, 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, and 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 of the present invention.
The above only is the specific embodiment of the best of the present invention, but architectural feature of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of being done or modify all is encompassed among the claim of the present invention.
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 |
|---|---|---|---|
| CN200910095686A CN101527476A (en) | 2009-01-15 | 2009-01-15 | Brushless electric motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095686A CN101527476A (en) | 2009-01-15 | 2009-01-15 | Brushless electric motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101527476A true CN101527476A (en) | 2009-09-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910095686A Pending CN101527476A (en) | 2009-01-15 | 2009-01-15 | Brushless electric motor rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN101527476A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082473A (en) * | 2010-12-15 | 2011-06-01 | 杭州富宁电器有限公司 | Structure and processing technology of rotor of servo motor |
| CN103001353A (en) * | 2012-10-29 | 2013-03-27 | 无锡金阳电机有限公司 | Rotary motor |
| CN103348567A (en) * | 2011-02-10 | 2013-10-09 | 松下电器产业株式会社 | Motor rotor, and fan driving motor provided therewith |
| CN104967236A (en) * | 2015-06-02 | 2015-10-07 | 山西北方机械制造有限责任公司 | Permanent magnet synchronous motor |
| 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 |
| WO2019213897A1 (en) * | 2018-05-10 | 2019-11-14 | 西门子股份公司 | Rotor shaft and machining method therefor |
-
2009
- 2009-01-15 CN CN200910095686A patent/CN101527476A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082473A (en) * | 2010-12-15 | 2011-06-01 | 杭州富宁电器有限公司 | Structure and processing technology of rotor of servo motor |
| CN103348567A (en) * | 2011-02-10 | 2013-10-09 | 松下电器产业株式会社 | Motor rotor, and fan driving motor provided therewith |
| US9293954B2 (en) | 2011-02-10 | 2016-03-22 | Panasonic Intellectual Property Management Co., Ltd. | Rotor of motor and fan driving motor including rotor |
| CN103348567B (en) * | 2011-02-10 | 2016-10-05 | 松下电器产业株式会社 | The rotor of motor and possess the fans drive motor of this rotor |
| CN103001353A (en) * | 2012-10-29 | 2013-03-27 | 无锡金阳电机有限公司 | Rotary motor |
| CN104967236A (en) * | 2015-06-02 | 2015-10-07 | 山西北方机械制造有限责任公司 | Permanent magnet synchronous motor |
| CN104967236B (en) * | 2015-06-02 | 2017-11-10 | 山西北方机械控股有限公司 | A kind of permasyn morot |
| 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 |
| WO2019213897A1 (en) * | 2018-05-10 | 2019-11-14 | 西门子股份公司 | Rotor shaft and machining method therefor |
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Open date: 20090909 |