CN105186742A - Rotor core and magnetic-steel built-in motor - Google Patents
Rotor core and magnetic-steel built-in motor Download PDFInfo
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- CN105186742A CN105186742A CN201510522079.9A CN201510522079A CN105186742A CN 105186742 A CN105186742 A CN 105186742A CN 201510522079 A CN201510522079 A CN 201510522079A CN 105186742 A CN105186742 A CN 105186742A
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- rotor core
- magnetic
- motor
- magnetic steel
- square hole
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Abstract
The invention discloses a rotor core and a magnetic-steel built-in motor, and solves problems that noises are larger because the positioning of magnetic steel is bad and is liable to shake in a high-speed operation process. The main points of the technical scheme of the invention are that the rotor core is formed by the lamination of rotor punching sheets; the rotor core has a hollow inner circular hole; a plurality of pairs of square holes are uniformly along the inner circular hole; two sides of the square holes are respectively provided with a magnetic bridge; the magnetic bridges are triangular through holes, and start from the centers of two sides of the square holes, and shrink at the other sides, relative to the inner circular hole, of the square holes. Through the arrangement of the triangular through holes, the starting positions are located at the center of two sides of the square holes, thereby enabling a punching sheet die not to be liable to be worn in a punching process. Moreover, the positioning of the magnetic steel in the square holes is enabled to be firmer, thereby increasing gap groups. After the magnetic steel is put in the square holes, the amount of glue storage is increased, thereby further fixing the magnetic steel, and preventing a centrifugal force generated in a high-speed rotation process of a motor from causing the shaking of the magnetic steel and generating noises.
Description
Technical field
The present invention relates to machine field, in particular, it relates to a kind of magnetic steel built-in type motor.
Background technology
Along with the development in market, in the middle of machine field, brushless electric machine occupies the larger market share, its main cause is exactly that brushless electric machine has energy-conservation, stepless time adjustment, and the function of rotating can be realized, and brush motor creates spark in the running also can have interference effect to electromagnetic component, at some machine field, just higher requirement is proposed to the rotating speed of brushless electric machine, but the high rotating speed of brushless electric machine is faced with again other problem while realizing, in motor, magnet steel is as a part for magnetic circuit, variable frequency power supply is supplied to coil by controller, produce magnetic field drive motor running, magnet steel in such as current existing brushless electric machine is generally external, be attached to the outside of rotor core, easily throw away when rotating speed is high and leave rotor, cause the fault of motor.
Application number be 201210249524.5 application discloses a kind of magnetic steel built-in type brushless DC motor, the present invention relates to a kind of magnetic steel built-in type brushless DC motor, comprise the stators and rotators be connected, described rotor comprises bearing, rotating shaft, rotor core and magnet steel, described bearing is connected with rotating shaft, rotor core inside is located at by described rotating shaft bag, described rotor core is evenly provided with natural number cross-notching, described magnet steel is located in this fluting, reduces magnetic resistance by being provided with magnetic bridge.But also existing in the design of the magnetic bridge of this DC motor is unreasonable, not only in the middle of punching course, the mould of stamping rotor punching easily weares and teares, and cause the shape of punching to be out of shape, and the location of magnet steel is bad in the middle of the process of running up, easily shake, cause noise larger.
Summary of the invention
According to the deficiencies in the prior art, the invention provides a kind of rotor core and magnetic steel built-in type motor that built-in magnet steel positioning stablity and being less likely to occur in the middle of the process of running up rocks.
For achieving the above object, the invention provides following technical scheme: a kind of rotor core, it is characterized in that: be overrided to form by the rotor punching of circle, described rotor core has the interior circular hole of hollow, evenly be provided with some to square hole along interior circular hole, be provided with magnetic bridge in the both sides of described square hole, described magnetic bridge is the through hole of triangle and starts from the middle position of the both sides of square hole, shrinks in the opposite side of square hole relative to interior circular hole.
Further, described square hole is provided with short slot group near the side of interior circular hole.
Further, described short slot group comprises and is positioned at the square short slot in centre position, square hole side and the milling cutter groove at two ends.
Magnetic steel built-in type motor, comprises rotor core as claimed in claim 1, motor housing and stator, also comprises the magnet steel be built in square hole.
Further, described motor housing is provided with motor protective ring.
Further, the rotating speed of described motor is 25000r/min.
Further, the number of poles of this rotor is 4 poles, and the groove number of stator is 6 grooves.
Beneficial effect of the present invention is, by the setting of the through hole at triangle, original position is at the middle position of square hole both sides, reach Lamination mould in the middle of punching course and be not easy wearing and tearing, and make the location of magnet steel in square hole more firm, add short slot group, be placed in after in square hole at magnet steel, add and hide glue amount, secure the location of magnet steel further, it also avoid the centrifugal force produced in motor high speed rotating process and make magnet steel rock the noise of generation.
Accompanying drawing explanation
Fig. 1 is a kind of magnetic steel built-in type motor of the present invention schematic diagram;
Fig. 2 is the schematic diagram of a kind of magnetic steel built-in type motor rear cover of the present invention;
Fig. 3 is the rotor core of a kind of magnetic steel built-in type motor of the present invention and the schematic diagram of stator cooperation;
Fig. 4 is the A portion enlarged drawing of Fig. 3.
Description of reference numerals: 1, rotor; 11, rotor core; 12, magnet steel; 2, interior circular hole; 3, square hole; 31, magnetic bridge; 4, short slot group; 41, square short slot; 42, milling cutter groove; 5, stator; 6, louvre.
Embodiment
Be described further with reference to a kind of rotor core of accompanying drawing 1 to 4 couple of the present invention and magnetic steel built-in type motor.
A kind of magnetic steel built-in type motor, comprise rotor 1 and stator, rotor 1 comprises bearing, rotating shaft and rotor core, rotor core is overrided to form by the rotor punching of circle, rotor core has the interior circular hole of hollow, evenly be provided with some to square hole along interior circular hole, two pairs of square holes are selected in the middle of the present embodiment, square hole forms a untight square, square hole cross section is oblong-shaped, the both sides of square hole are provided with magnetic bridge, magnetic bridge is the through hole of triangle and starts from the middle position of the both sides of square hole, shrink in the opposite side of square hole relative to interior circular hole, original position is at the middle position of square hole both sides, reach Lamination mould in the middle of punching course and be not easy wearing and tearing, and add the location of magnet steel 12 in square hole.Square hole is provided with short slot group near the side of interior circular hole, short slot group comprises and is positioned at the square short slot in centre position, square hole side and the milling cutter groove at two ends, square short slot can pour into glue, reach square hole inside magnet steel 12 being fixed on to rotor core, glue can certainly be added in the inside of milling cutter groove, reach to add by the setting of short slot group and hide glue amount, secure the location of magnet steel 12 further, it also avoid the centrifugal force produced in motor high speed rotating process and make magnet steel 12 rock the noise of generation.
Rotor 1 number of poles is 4 poles, and number of stator slots is 6 grooves, and the ratio of rotor 1 number of poles and number of stator slots is 2:3, and useful flux is large.
The rotating speed of this kind of motor is 25000r/min, and power is 250W, and belong to high rotating speed high power, the bonnet of motor housing is provided with louvre, reaches high-revolving motor and has good heat sinking function.Motor housing is provided with motor protective ring.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Although more employ the terms such as rotor, rotor core, interior circular hole, square hole, magnetic bridge, short slot group, square short slot herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (7)
1. a rotor core, it is characterized in that: be overrided to form by the rotor punching of circle, described rotor core has the interior circular hole of hollow, evenly be provided with some to square hole along interior circular hole, magnetic bridge is provided with in the both sides of described square hole, described magnetic bridge is the through hole of triangle and starts from the middle position of the both sides of square hole, shrinks in the opposite side of square hole relative to interior circular hole.
2. a kind of rotor core according to claim 1, is characterized in that, described square hole is provided with short slot group near the side of interior circular hole.
3. a kind of rotor core according to claim 2, is characterized in that, described short slot group comprises and is positioned at the square short slot in centre position, square hole side and the milling cutter groove at two ends.
4. magnetic steel built-in type motor, comprises rotor core as claimed in claim 1, motor housing and stator, also comprises the magnet steel be built in square hole.
5. magnetic steel built-in type motor according to claim 4, is characterized in that, described motor housing is provided with motor protective ring.
6. magnetic steel built-in type motor according to claim 4, is characterized in that, the rotating speed of this motor is 25000r/min.
7. magnetic steel built-in type motor according to claim 4, is characterized in that, the number of poles of this rotor is 4 poles, and the groove number of stator is 6 grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522079.9A CN105186742A (en) | 2015-08-22 | 2015-08-22 | Rotor core and magnetic-steel built-in motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510522079.9A CN105186742A (en) | 2015-08-22 | 2015-08-22 | Rotor core and magnetic-steel built-in motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105186742A true CN105186742A (en) | 2015-12-23 |
Family
ID=54908653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510522079.9A Pending CN105186742A (en) | 2015-08-22 | 2015-08-22 | Rotor core and magnetic-steel built-in motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN105186742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165798A (en) * | 2018-03-19 | 2019-08-23 | 佛山市顺德区科霸菱电机有限公司 | A kind of induction single-phase capacitor running Wound-rotor type stator and its production and processing technology |
| CN111934455A (en) * | 2020-09-19 | 2020-11-13 | 浙江西菱股份有限公司 | Three-phase permanent magnet synchronous variable frequency motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007074899A (en) * | 2006-12-15 | 2007-03-22 | Matsushita Electric Ind Co Ltd | Rotor of motor-driven blower |
| JP2012080716A (en) * | 2010-10-05 | 2012-04-19 | Daikin Ind Ltd | Rotor and magnet embedded type motor |
| CN202737606U (en) * | 2012-08-03 | 2013-02-13 | 昆山航天林泉电机有限公司 | Built-in rotor magnetic steel salient pole device |
| CN103580435A (en) * | 2012-07-18 | 2014-02-12 | 上海鸣志电器股份有限公司 | Magnetic steel built-in type brushless DC motor |
| CN204906040U (en) * | 2015-08-21 | 2015-12-23 | 宁波市比尔迪赛电机有限公司 | Built -in motor of magnet steel |
-
2015
- 2015-08-22 CN CN201510522079.9A patent/CN105186742A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007074899A (en) * | 2006-12-15 | 2007-03-22 | Matsushita Electric Ind Co Ltd | Rotor of motor-driven blower |
| JP2012080716A (en) * | 2010-10-05 | 2012-04-19 | Daikin Ind Ltd | Rotor and magnet embedded type motor |
| CN103580435A (en) * | 2012-07-18 | 2014-02-12 | 上海鸣志电器股份有限公司 | Magnetic steel built-in type brushless DC motor |
| CN202737606U (en) * | 2012-08-03 | 2013-02-13 | 昆山航天林泉电机有限公司 | Built-in rotor magnetic steel salient pole device |
| CN204906040U (en) * | 2015-08-21 | 2015-12-23 | 宁波市比尔迪赛电机有限公司 | Built -in motor of magnet steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165798A (en) * | 2018-03-19 | 2019-08-23 | 佛山市顺德区科霸菱电机有限公司 | A kind of induction single-phase capacitor running Wound-rotor type stator and its production and processing technology |
| CN111934455A (en) * | 2020-09-19 | 2020-11-13 | 浙江西菱股份有限公司 | Three-phase permanent magnet synchronous variable frequency motor |
| CN111934455B (en) * | 2020-09-19 | 2021-06-04 | 浙江西菱股份有限公司 | Three-phase permanent magnet synchronous variable frequency motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 315321 Zhejiang city of Ningbo province Cixi city town Xiao Xiao New Road No. 188 Applicant after: Bill Di Sai Electric Machine Co., Ltd of Ningbo City Address before: Kandun street Kandun road Cixi city Zhejiang province 315303 Ningbo City No. 125 Applicant before: Bill Di Sai Electric Machine Co., Ltd of Ningbo City |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |