CN104113153A - Motor and manufacturing method thereof - Google Patents
Motor and manufacturing method thereof Download PDFInfo
- Publication number
- CN104113153A CN104113153A CN201310282537.7A CN201310282537A CN104113153A CN 104113153 A CN104113153 A CN 104113153A CN 201310282537 A CN201310282537 A CN 201310282537A CN 104113153 A CN104113153 A CN 104113153A
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- motor
- groove position
- rotor
- rotor core
- 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.)
- Pending
Links
Abstract
The invention is suitable for the technical field of motors, and discloses a motor and a manufacturing method thereof. The aforementioned motor comprises a rotor which comprises a rotor iron core and magnetic steel. There are multiple sets of magnetic steel arranged at the external side of the rotor iron core. The rotor iron core is provided with groove positions which are inwardly recessed from the external surface of the rotor iron core to a rotor. The groove positions are arranged between adjacent magnetic steel. The bottom part of the groove positions is closer to the center of the rotor in a way of being relative to the bottom surface of magnetic steel. The aforementioned manufacturing method comprises the following steps that a stator and the rotor iron core with the groove positions arranged at the external side surface are prepared; positioning strips are arranged in the groove positions; and magnetic steel is adhered at the external side of the rotor iron core, and the side surface of magnetic steel and the side surface of the positioning strips are enabled to be adhered. According to the motor and the manufacturing method thereof, the groove positions are arranged on the rotor iron core, and relatively high magnetic resistance is generated at the groove positions so that resistance to demagnetization of magnetic steel can be substantially enhanced when high current is inputted to the motor at high temperature. Besides, the motor is great in performance and long in the service life.
Description
Technical field
The invention belongs to technical field of motors, relate in particular to a kind of motor and manufacture method thereof.
Background technology
At present, magneto is divided into built-in two kinds of magnet steel label type and magnet steel, for magnet steel label type magneto, because itself characteristic has good in control performance, and application widely and Industry Control, medical machinery, pharmaceutical machine all trades and professions, difference due to industry, for this magneto, various requirements have also been proposed, wherein with regard to motor itself, important index is the power density (same volume exert oneself size) of motor, wide operation interval (speed of the maximum operation of motor and the torque of output) etc.
In existing trend, the volume of motor is more and more less, but the output torque that requires motor is constant or increase, in the situation that material property does not have large change, this means the work that motor can be good under large electric current and high temperature, realize such requirement, magneto is worked when high temperature and large electric current, and magnet steel demagnetization problem is exactly the key factor of restriction motor.
Motor of the prior art, if Fig. 1 (a) is to as shown in Fig. 1 (d), its magnet steel 2a is affixed on the outside of rotor core 1a, for example the patent No. is: the patent of ZL201220308590.0, and in its motor providing, magnet steel is fixed on rotor core, anti-degaussing structure is not set, motor is under hot conditions, while inputting large electric current (exporting large torque), and the demagnetization phenomenon of magnetic steel of magnetoelectric machine is serious, affects performance and the life-span of motor.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, motor and manufacture method thereof are provided, it can improve the useful life of motor.
Technical scheme of the present invention is: a kind of motor, comprise rotor, described rotor comprises rotor core and magnet steel, described magnet steel is provided with a plurality of, described in each, magnet steel is positioned at the outside of described rotor core, described rotor core is provided with the groove position to described rotor center depression from rotor core exterior surface, and described groove position is arranged between adjacent magnet steel, and the center of described rotor core is more leaned in the bottom surface of the relatively described magnet steel in bottom of described groove position.
Alternatively, the end of described magnet steel extends in described groove position.
Alternatively, in described groove position, be provided with positioning strip; Described positioning strip is non-magnetic insulator, and described non-magnetic insulator protrudes from described groove position, and the sidewall that the sidewall of described magnet steel and described non-magnetic insulator protrude from described groove position is affixed.
Alternatively, the both sides of the upper end of described non-magnetic insulator convex with the lug boss that is snapped in described magnet steel upper end.
Alternatively, described non-magnetic insulator adopts plastic cement or ceramic material to make.
Alternatively, the bottom surface of described magnet steel is plane, the plane that the arranged outside of described rotor core has a plurality of and described magnet steel bottom surface to be affixed, and described groove position arranges between adjacent plane.
The present invention also provides a kind of manufacture method of motor, comprise the following steps: prepare the rotor core that stator and lateral surface have groove position, in described groove position, positioning strip is set, described magnet steel is affixed on to the outside of described rotor core and makes the side of described magnet steel and the side of described positioning strip is affixed, and magnet steel is separated by described groove position.
Alternatively, after being attached at described magnet steel, described positioning strip is taken out from described groove position.
Alternatively, described positioning strip is non-magnetic insulator.
Alternatively, the center of described rotor is more leaned in the bottom surface of the relatively described magnet steel in bottom of described groove position.
Motor provided by the invention and manufacture method thereof, it by offering groove position on rotor core, place, groove position will produce larger magnetic resistance, groove position is avoided in the magnetic field that the armature reaction that motor causes produces, the field weakening being produced by armature reaction at magnet steel two ends, the anti-demagnetization capability of motor under the large electric current of high temperature will improve greatly, at this moment the output torque of motor changes little, can improve significantly motor anti-degaussing ability of magnet steel of (high temperature is exported large torque) when high temperature is inputted large electric current, the expansion of the operation interval of motor, met wide working region, requirement under severe environmental conditions, and at identical radiating condition, it is less that the volume energy of motor is done, to have saved the cost of motor and saved rare earth resources, the performance of motor is good, the life-span is long.
Accompanying drawing explanation
Fig. 1 (a) is the generalized section of prior art rotor;
Fig. 1 (b) is the generalized section of prior art rotor;
Fig. 1 (c) is the generalized section of prior art rotor;
Fig. 1 (d) is the generalized section of prior art rotor;
Fig. 2 (a) is the generalized section of the motor rotor that provides of the embodiment of the present invention one;
Fig. 2 (b) is the generalized section of the motor rotor of the installation positioning strip that provides of the embodiment of the present invention one;
Fig. 3 (a) is the generalized section of the motor rotor that provides of the embodiment of the present invention two;
Fig. 3 (b) is the generalized section of the motor rotor of the installation positioning strip that provides of the embodiment of the present invention two;
Fig. 4 is the generalized section of the motor rotor that provides of the embodiment of the present invention three.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Fig. 2 (a) and Fig. 2 (b), a kind of motor that the embodiment of the present invention provides, can be magnet steel label type motor.Above-mentioned motor comprises stator (not shown) and rotor 10, and rotor 10 is rotatably arranged in stator.Rotor 10 comprises rotor core 1 and magnet steel 2, and magnet steel 2 is provided with a plurality of, such as six, eight, ten etc.Each magnet steel 2 rings are positioned at the outside of rotor core 1, and rotor core 1 is provided with the groove position 101 to described rotor 10 central concave from rotor core 1 outer surface, and groove position 101 is arranged between adjacent magnet steel 2.The bottom surface of the relative magnet steel 2 in bottom of groove position 101 is more by described rotor 10 center.The bottom of groove position 101 can be lower than the bottom surface of magnet steel 2, and the bottom land of groove position 101 is lower than the contact-making surface of magnet steel 2 and rotor core 1.Like this, while opening a darker groove position 101 on the rotor core 1 between adjacent magnet steel 2, owing to offering 101 places, groove position, larger magnetic resistance will be produced, groove position 101 is avoided in the magnetic field that the armature reaction that motor causes produces, a little less than the magnetic field at 101 places, groove position, groove position 101 is positioned at the place, two ends of magnet steel 2, the field weakening being produced by armature reaction at magnet steel 2 two ends, and the magnetic field that magnet steel 2 two ends are produced by armature reaction is the major reason of demagnetization, by being set, groove position 101 weakens the magnetic field being produced by armature reaction, the anti-demagnetization capability of motor under the large electric current of high temperature will improve greatly, motor is under hot conditions, while inputting large electric current (exporting large torque), magnetic steel of magnetoelectric machine substantially without demagnetization phenomenon, and, the formation of eddy current can be avoided in groove position 101, the loss of electric machine is little, efficiency is high, the output torque of motor changes little, guarantee performance and the life-span of motor.
Particularly, as shown in Fig. 2 (a) and Fig. 2 (b), groove position 101 can axially run through the two ends of rotor core 1, and groove position 101 extends to the other end from one end of rotor core 1.
Particularly, as shown in Fig. 2 (a) and Fig. 2 (b), the cross section of groove position 101 can be the suitable shapes such as trapezoidal, triangle, semicircle.
Particularly, as shown in Fig. 2 (a) and Fig. 2 (b), rotor core 1 can be all-in-one-piece entity or rotor punching laminates axle, and magnet steel 2 is for bottom surface is for being plane, and its upper end can be curved, and integral body is bread-like.
Particularly, as shown in Fig. 2 (a) and Fig. 2 (b), groove position 101 is interior can be provided with positioning strip, and when mounting magnetic steel 2, the side of magnet steel 2 can be butted on the side of positioning strip, so that the installation of magnet steel 2.Positioning strip can be non-magnetic insulator 3.Non-magnetic insulator 3 can adopt the materials such as plastics, pottery to make.
If positioning strip takes out after magnet steel 2 is installed, positioning strip also can adopt permeability magnetic material to make.
Particularly, as shown in Fig. 2 (a) and Fig. 2 (b), non-magnetic insulator 3 protrudes from groove position 101, and the sidewall that the sidewall of magnet steel 2 and non-magnetic insulator 3 protrude from groove position 101 is affixed, so that the installation of magnet steel 2, location.When completing to the location of magnet steel 2 with after installing, for the non-magnetic insulator 3 of locating, can remain in groove position 101, also can be by non-magnetic insulator 3 from the interior taking-up in groove position 101.
In the present embodiment, as shown in Fig. 2 (a) and Fig. 2 (b), the bottom surface of magnet steel 2 is plane, and the arranged outside of rotor core 1 has a plurality of planes that are affixed with magnet steel 2 bottom surfaces, and groove position 101 arranges between adjacent plane.In the present embodiment, magnet steel 2 is buffed top magnet steel, certainly, also can be tile-type magnet steel etc.Tile-type magnet steel cost is higher, and buffed top magnetic steel rotor 10 structures are easily demagnetized, and in the present invention, by groove position 101 is set, has solved buffed top magnetic steel rotor this technical problem of easily demagnetizing.
Through finite element analysis software and experimental verification, on the rotor core 1 of 2 of magnet steel, open a bottom while being deeper than the groove position 101 of magnet steel 2 bottom surfaces, the anti-demagnetization capability of motor under the large electric current of high temperature will improve greatly, at this moment the output torque of motor changes little, can improve significantly motor anti-degaussing ability of magnet steel 2 of (high temperature is exported large torque) when high temperature is inputted large electric current, the expansion that this just means the operation interval of motor, has met the requirement under wide working region, adverse circumstances (hot environment) condition; At identical radiating condition, it is less that the volume energy of motor is done, and saved the cost of motor and saved rare earth resources.
The embodiment of the present invention also provides the manufacture method of above-mentioned motor, comprise the following steps: prepare the rotor core 1 that stator and lateral surface have groove position 101, in the interior positioning strip that arranges in described groove position 101, magnet steel 2 is affixed on to the outside of rotor core 1 and makes the side of described magnet steel 2 and the side of described positioning strip is affixed, and magnet steel 2 is separated by groove position 101.Rotor core 1 can be solid formula rotor core, also can adopt punching to be overrided to form.
Particularly, after being attached at described magnet steel 2, described positioning strip is taken out from described groove position 101, if positioning strip does not remain in rotor core 1, so described positioning strip is non-magnetic insulator, and positioning strip can adopt permeability magnetic material to make.
Alternatively, the effect of anti-demagnetization more, by rotor 10 center, has further been improved in the bottom surface of the relative magnet steel 2 in the bottom of groove position 101.
Particularly, positioning strip can be the non-magnetic insulator 3 that protrudes from groove position 101, and the sidewall that the side of magnet steel 2 and non-magnetic insulator 3 is protruded to groove position 101 is affixed.First putting into non-magnetic insulator 3, to enter rotor core 1 fixing, be used for to magnet steel 2 location, then paste magnet steel 2, after fixing Deng magnet steel 2, the non-magnetic insulator 3 that is used for locating can retain or take out (during taking-up, non-magnetic insulator 3 is bonding without glue), then, according to the intensity of selected glue, can consider wrapping or not wrap up.In concrete application, can select the materials such as carbon fiber, non-magnetic stainless steel to wrap up magnet steel 2, to avoid it to come off in running up.
Embodiment bis-:
The motor middle slot position providing from embodiment mono-is different, and in the present embodiment, as shown in Fig. 3 (a) and Fig. 3 (b), the end of magnet steel 2 extends in groove position 101.The width of the groove position 101 ' on the rotor core 1 ' of rotor 10 ' can be greater than the gap of adjacent magnet steel 2 ', the width of groove position 101 ' opening is larger, make groove position 101 ' extend to the bottom of magnet steel 2 ', further weaken the intensity of magnet steel 2 ' two ends edges due to the formed magnetic field of armature reaction, more effectively avoided the demagnetization of magnet steel 2 '.
Embodiment tri-:
In the motor providing from embodiment mono-, two, the shape of non-magnetic insulator is different, in the present embodiment, as shown in Figure 4, groove position on rotor 10 ' ' rotor core 1 ' ' is provided with non-magnetic insulator 3 ' ', the lug boss 31 ' of non-magnetic insulator 3 ' ' the both sides of upper end convex be snapped in magnet steel 2 ' ' upper end ', the structural reliability of non-magnetic insulator 3 ' ' cross section be roughly " T " font, be beneficial to and improve magnet steel 2 ' '.In concrete application, non-magnetic insulator 3 ' ' shape can set according to actual conditions.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace or improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a motor, comprise rotor, described rotor comprises rotor core and magnet steel, described magnet steel is provided with a plurality of, described in each, magnet steel is positioned at the outer surface of described rotor core, it is characterized in that, described rotor core is provided with the groove position to described rotor center depression from described rotor core outer surface, described groove position is arranged between adjacent magnet steel, and the center of described rotor is more leaned in the bottom surface of the relatively described magnet steel in bottom of described groove position.
2. motor as claimed in claim 1, is characterized in that, the end of described magnet steel extends in described groove position.
3. motor as claimed in claim 1 or 2, is characterized in that, described groove is provided with positioning strip in position; Described positioning strip is non-magnetic insulator, and described non-magnetic insulator protrudes from described groove position, and the sidewall that the sidewall of described magnet steel and described non-magnetic insulator protrude from described groove position is affixed.
4. motor as claimed in claim 3, is characterized in that, the both sides of the upper end of described non-magnetic insulator are provided with the lug boss of magnet steel upper end described in buckle.
5. motor as claimed in claim 3, is characterized in that, described non-magnetic insulator adopts plastic cement or ceramic material to make.
6. motor as claimed in claim 1 or 2, is characterized in that, the bottom surface of described magnet steel is plane, the plane that the arranged outside of described rotor core has a plurality of and described magnet steel bottom surface to be affixed, and described groove position arranges between adjacent plane.
7. the manufacture method of a motor, it is characterized in that, comprise the following steps: prepare the rotor core that stator and lateral surface have groove position, in described groove position, positioning strip is set, magnet steel is affixed on to the outside of described rotor core and makes the side of described magnet steel and the side of described positioning strip is affixed, and described magnet steel is separated by described groove position.
8. manufacture method as claimed in claim 7, is characterized in that, after being attached at described magnet steel, described positioning strip is taken out from described groove position.
9. manufacture method as claimed in claim 8, is characterized in that, described positioning strip is non-magnetic insulator.
10. the manufacture method as described in any one in claim 7 to 9, is characterized in that, the center of described rotor is more leaned in the bottom surface of the relatively described magnet steel in bottom of described groove position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282537.7A CN104113153A (en) | 2013-07-05 | 2013-07-05 | Motor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282537.7A CN104113153A (en) | 2013-07-05 | 2013-07-05 | Motor and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104113153A true CN104113153A (en) | 2014-10-22 |
Family
ID=51709833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310282537.7A Pending CN104113153A (en) | 2013-07-05 | 2013-07-05 | Motor and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104113153A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868627B (en) * | 2015-04-28 | 2017-06-27 | 南京航空航天大学 | A kind of rotor permanent magnet stop device |
| CN110277850A (en) * | 2019-07-15 | 2019-09-24 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of rotor structure for permanent magnet motor and installation method |
| CN111555489A (en) * | 2019-02-08 | 2020-08-18 | 株式会社日立产业机器 | Rotating electrical machine and elevator hoist system |
| CN112436686A (en) * | 2020-11-16 | 2021-03-02 | 肖云 | Rotor magnet mounting equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203603C (en) * | 2000-02-26 | 2005-05-25 | 罗伯特－博施有限公司 | Magnet retainer and method for fixing magnet on support element |
| WO2006008964A1 (en) * | 2004-07-16 | 2006-01-26 | Mitsuba Corporation | Magnet fixing structure for electric rotating machine |
| CN1885680A (en) * | 2005-06-20 | 2006-12-27 | 株式会社安川电机 | Permanent-magnet type motor |
| CN101567594A (en) * | 2008-04-25 | 2009-10-28 | 株式会社捷太格特 | Motor rotor and electric power steering apparatus |
| WO2013099195A1 (en) * | 2011-12-26 | 2013-07-04 | Nidec Corporation | Motor |
-
2013
- 2013-07-05 CN CN201310282537.7A patent/CN104113153A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203603C (en) * | 2000-02-26 | 2005-05-25 | 罗伯特－博施有限公司 | Magnet retainer and method for fixing magnet on support element |
| WO2006008964A1 (en) * | 2004-07-16 | 2006-01-26 | Mitsuba Corporation | Magnet fixing structure for electric rotating machine |
| CN1885680A (en) * | 2005-06-20 | 2006-12-27 | 株式会社安川电机 | Permanent-magnet type motor |
| CN101567594A (en) * | 2008-04-25 | 2009-10-28 | 株式会社捷太格特 | Motor rotor and electric power steering apparatus |
| WO2013099195A1 (en) * | 2011-12-26 | 2013-07-04 | Nidec Corporation | Motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868627B (en) * | 2015-04-28 | 2017-06-27 | 南京航空航天大学 | A kind of rotor permanent magnet stop device |
| CN111555489A (en) * | 2019-02-08 | 2020-08-18 | 株式会社日立产业机器 | Rotating electrical machine and elevator hoist system |
| CN110277850A (en) * | 2019-07-15 | 2019-09-24 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of rotor structure for permanent magnet motor and installation method |
| CN112436686A (en) * | 2020-11-16 | 2021-03-02 | 肖云 | Rotor magnet mounting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2741400B1 (en) | Motor rotor and motor having same | |
| KR200479510Y1 (en) | Rotor and motor, an elevator traction machine or servo drive mechanism comprising same | |
| US20140175932A1 (en) | Motor and rotor thereof | |
| CN112564346B (en) | High-torque-density axial magnetic field permanent magnet motor rotor structure and motor thereof | |
| CN104113153A (en) | Motor and manufacturing method thereof | |
| CN211239490U (en) | Motor rotor magnetic steel fixing structure | |
| CN202405896U (en) | Rotor core and high-efficiency variable-frequency speed regulation permanent magnet synchronous motor with same | |
| CN106953488A (en) | A kind of embedded wheel hub motor and use its electric motor car | |
| CN105305685B (en) | A kind of permanent magnet synchronous direct-driven motor | |
| CN112865467B (en) | Combined stator core claw pole transverse flux permanent magnet brushless motor structure and method thereof | |
| CN204012986U (en) | A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor | |
| CN108233568B (en) | Disc type motor rotor with embedded magnetic poles | |
| US20210167644A1 (en) | Rotor structure, permanent magnet auxiliary synchronous reluctance motor, and electric vehicle | |
| CN102790455A (en) | Rotor core and high-efficiency frequency conversion speed regulating permanent magnet synchronous motor | |
| CN102386698B (en) | Surface-mounted type permanent magnet rotor structure | |
| CN202231508U (en) | Ring group type rotor protection device for permanent magnet motor | |
| CN201789350U (en) | Surface-mounted permanent-magnetic rotor structure | |
| CN202353340U (en) | Inner rotor of double-rotor motor for hybrid electric vehicle | |
| CN103683602A (en) | Permanent magnet motor rotor with low eddy-current loss | |
| CN110729830A (en) | High-speed rotor punching sheet and rotor structure | |
| CN203554106U (en) | Low eddy current loss permanent magnet motor rotor | |
| CN216530772U (en) | Permanent magnet direct current motor rotor punching sheet | |
| CN219351382U (en) | Rotor structure and motor | |
| CN215835213U (en) | Permanent magnet synchronous motor rotor without magnetic isolation bridge salient poles | |
| CN203722359U (en) | Anti-demagnetization motor rotor structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141022 |
|
| RJ01 | Rejection of invention patent application after publication |