CN108565993A - A kind of magnet - Google Patents
A kind of magnet Download PDFInfo
- Publication number
- CN108565993A CN108565993A CN201810594373.4A CN201810594373A CN108565993A CN 108565993 A CN108565993 A CN 108565993A CN 201810594373 A CN201810594373 A CN 201810594373A CN 108565993 A CN108565993 A CN 108565993A
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- China
- Prior art keywords
- magnet
- magnetic
- regions
- region
- hill
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Links
- 230000004907 flux Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 abstract description 14
- 239000000696 magnetic material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention belongs to magnet manufacturing technology fields, more particularly to a kind of magnet, there are at least two magnetic hill regions on the magnet, there are the regions Ci Gu between the magnetic hill region, the thickness of the regions Ci Gu respective magnet is less than the thickness of magnetic hill region respective magnet, and the weakened region on the magnet is located on the installation region of the magnet.For the wall thickness magnet such as tradition, the magnet of the application, by the corresponding magnet wall thickness reduction in the regions Ci Gu, so under the premise of ensuring that magnet offer meets job requirement magnetic field, make the magnet wall thickness reduction at the regions Ci Gu, on the one hand it can mitigate magnet weight, on the other hand, magnetic material is also ad save, magnet cost of manufacture is reduced；Also, in the scheme of the application, weakened region is arranged on the installation region of magnet, the further reliability for improving magnet installation.
Description
Technical field
The invention belongs to magnet manufacturing technology fields, and in particular to a kind of magnet.
Background technology
With the development of science and technology the magnetic property purposes of magnet is constantly extended so that magnet is widely applied to each
In field, such as technical field of motors, sensor technical field and field of medical technology etc..
In current technical field of motors, magnet is typically that certain motors are needed on magnet for cylinder-like structure
With multiple magnetic poles, in actually research and development manufacture, inventor has found, for current more magnetic poles magnet there is also there is deficiency,
It is specific as follows to state：When magnet has multiple magnetic poles, each magnetic pole position is magnetic hill region, and the junction of adjacent pole is magnetic
Paddy region, current magnet, be all using etc. wall thickness design, it is as shown in Figure 1, that is, the magnetic in magnetic hill region and the regions Ci Gu
Body wall thickness is all identical, such design, not only when magnet there is heavier weight, but also also cause the waste of a large amount of magnetic materials.
Invention content
It is an object of the invention to：There are problems that heavier-weight and magnetic waste of material for current more pole magnets, carries
It can mitigate magnet weight for one kind, reduce the magnet structure of magnetic waste of material.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes：
A kind of magnet, has at least two magnetic hill regions on the magnet, and there are the regions Ci Gu, institutes between the magnetic hill region
The thickness for stating the regions Ci Gu respective magnet is less than the thickness of magnetic hill region respective magnet.
For the wall thickness magnet such as tradition, the magnet of the application, by the corresponding magnet wall thickness reduction in the regions Ci Gu, institute
Under the premise of ensuring that magnet offer meets job requirement magnetic field, to make the magnet wall thickness reduction at the regions Ci Gu, on the one hand may be used
To mitigate magnet weight, on the other hand, magnetic material is also ad save, magnet cost of manufacture is reduced.
Preferably, the weakened region on the magnet is located on the installation region of the magnet.The application magnet is located at
In the structure of conventional magnet, the corresponding subregion in the regions Ci Gu is cut off or is omitted, though the corresponding magnetic in the regions Ci Gu
Body is thinning, and then achievees the purpose that mitigate magnet weight and save magnetic material, wherein excision or the region omitted are as above-mentioned
Weakened region weakened region is arranged on the installation region of magnet in the scheme of the application, be on the one hand to avoid being thinned
The shape in magnet magnetic work face is influenced when magnet, on the other hand, additionally it is possible to increase the area of magnet installation region, improve magnet
Installation reliability, further, can also reduce installation region be the surface of revolution risk further improve magnet in turn
The reliability of installation.
Preferably, the magnet is hollow tubular structure, and the weakened region of the magnet is located at the inner wall of the magnet.
Rotor is usually hollow tubular structure with magnet at present, and mesoporous thereon is pilot hole, will in the scheme of the application
Weakened region is arranged in magnet inner wall, and magnet inner wall is made to form non-rotating structure, in this way, after magnet installation, conducive to magnetic is ensured
The reliability and stability of body assembly.
It is further preferred that on the circumferencial direction around the magnet center axis, the magnetic flux density of the magnet is in just
String be distributed, the magnetic hill region of the magnet is corresponding with the peak regions of the magnetic flux density, the regions Ci Gu of the magnet and
The valley regions of the magnetic flux density are corresponding.The magnet of the application, the corresponding magnet in the high part of magnetic flux density is thicker,
And magnetic flux density it is low the corresponding magnet in part it is relatively thin, be arranged such so that magnet thickness is related to magnetic flux density, it is ensured that magnet
Magnetic property reaches thinned magnet thickness that can be more as possible under the premise of design requirement.
It is further preferred that the corresponding magnet inner wall in the regions Ci Gu is the plane along magnet axial.So set
It sets, the processing of aspect magnet, while being also convenient for the assembly of magnet.
It is further preferred that the magnet thickness is gradually thinning towards the regions Ci Gu by the magnetic hill region.Magnet thickness
For gradual change form, it is conducive to the stress of magnet, improves the structural reliability of magnet.
It is further preferred that the corresponding magnet inner wall in the magnetic hill region is arc surfaced.
It is further preferred that the corresponding magnet in the magnetic hill region magnet corresponding with the regions Ci Gu it
Between to seamlessly transit.The stress of further magnet, improves the structural reliability of magnet.
Compared with prior art, beneficial effects of the present invention：
The magnet of the application, for the wall thickness magnet such as tradition, the magnet of the application, by the corresponding magnet wall in the regions Ci Gu
Thickness is thinned, so, under the premise of ensuring that magnet offer meets job requirement magnetic field, the magnet wall thickness at the regions Ci Gu is made to subtract
It is thin, it on the one hand can mitigate magnet weight, on the other hand, also a save magnetic material, reduce magnet cost of manufacture.
Description of the drawings：
Fig. 1 is the schematic diagram of existing magnet；
Fig. 2 is the structural schematic diagram of the application magnet；
Fig. 3 is the vertical view of the application magnet,
It is marked in figure：1- magnets, 2- magnetic hills region, the regions 3- Ci Gu.
Specific implementation mode
With reference to test example and specific implementation mode, the present invention is described in further detail, but should not understand this
It is only limitted to embodiment below for the range of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that the content of present invention is realized
The range of invention.
Specific implementation mode：
A kind of magnet has at least two magnetic hill regions 2, exists between the magnetic hill region 2 such as Fig. 2 and 3 on the magnet 1
There are the regions Ci Gu 3, the thickness of 3 respective magnet 1 of the regions Ci Gu to be less than the thickness of 2 respective magnet 1 of the magnetic hill region.
For the wall thickness such as tradition magnet 1, the magnet 1 of the application subtracts 3 corresponding magnet of the regions Ci Gu, 1 wall thickness
It is thin, so, under the premise of ensuring that the offer of magnet 1 meets job requirement magnetic field, make 1 wall thickness reduction of magnet at the regions Ci Gu 3,
On the one hand it can mitigate 1 weight of magnet, on the other hand, also a save magnetic material, reduce 1 cost of manufacture of magnet.
As preferred embodiment, the weakened region on the magnet 1 is located on the installation region of the magnet 1.This
Apply for magnet 1, be located in the structure of conventional magnet 1,3 corresponding subregion of the regions Ci Gu is cut off or omitted, even if
3 corresponding magnet 1 of the regions Ci Gu it is thinning, and then achieve the purpose that mitigate 1 weight of magnet and save magnetic material, wherein excision or
The region that person omits is that in the scheme of the application the installing zone in magnet 1 is arranged in weakened region by above-mentioned weakened region
On the one hand it is the shape that 1 magnetic work face of magnet is influenced when avoiding being thinned magnet 1, on the other hand, additionally it is possible to increase magnet on domain
The area of 1 installation region improves the installation reliability of magnet 1, further, can also reduce the wind that installation region is the surface of revolution
Danger, in turn, the further reliability for improving magnet 1 and installing.
As preferred embodiment, the magnet 1 is hollow tubular structure, and the weakened region of the magnet 1 is located at
The inner wall of the magnet 1.Rotor magnet 1 is usually hollow tubular structure at present, and mesoporous thereon is pilot hole,
In the scheme of the application, weakened region is arranged in 1 inner wall of magnet, so that 1 inner wall of magnet is formed non-rotating structure, in this way, in magnetic
After body 1 is installed, conducive to the reliability and stability for ensuring that magnet 1 assembles.
As preferred embodiment, on the circumferencial direction around 1 central axis of the magnet, the magnetic flux of the magnet 1
Density is in Sine distribution, and the magnetic hill region 2 of the magnet 1 is corresponding with the peak regions of the magnetic flux density, the magnet 1
The regions Ci Gu 3 are corresponding with the valley regions of the magnetic flux density.The magnet 1 of the application, the high part of 1 magnetic flux density of magnet are right
The magnet 1 answered is thicker, and magnetic flux density it is low the corresponding magnet 1 in part it is relatively thin, be arranged such so that 1 thickness of magnet and magnetic flux
Density is related, it is ensured that 1 thickness of thinned magnet that 1 magnetic property of magnet can be more as possible under the premise of reaching design requirement.
As preferred embodiment, corresponding 1 inner wall of the magnet in the regions Ci Gu 3 is along axial flat of magnet 1
Face.So set, the processing of aspect magnet 1, while being also convenient for the assembly of magnet 1.
As preferred embodiment, 1 thickness of the magnet is gradually thinning towards the regions Ci Gu 3 by the magnetic hill region 2.
1 thickness of magnet is gradual change form, is conducive to the stress of magnet 1, improves the structural reliability of magnet 1.
As preferred embodiment, corresponding 1 inner wall of the magnet in the magnetic hill region 2 is arc surfaced.
As preferred embodiment, the corresponding magnet 1 in the magnetic hill region 2 is corresponding with the regions Ci Gu 3
It is to seamlessly transit between the magnet 1.The stress of further magnet 1, improves the structural reliability of magnet 1.
Above example is only to illustrate the present invention and not limits technical solution described in the invention, although this explanation
Book is with reference to above-mentioned each embodiment to present invention has been detailed description, but the present invention is not limited to above-mentioned specific implementation
Mode, therefore any modify to the present invention or equivalent replacement；And the technical side of all spirit and scope for not departing from invention
Case and its improvement, are intended to be within the scope of the claims of the invention.
Claims (8)
1. a kind of magnet, it is characterised in that：There are at least two magnetic hill regions on the magnet, exist between the magnetic hill region
There are the regions Ci Gu, the thickness of the regions Ci Gu respective magnet to be less than the thickness of magnetic hill region respective magnet.
2. magnet according to claim 1, it is characterised in that：Weakened region on the magnet is located at the peace of the magnet
It fills on region.
3. magnet according to claim 1, it is characterised in that：The magnet is hollow tubular structure, the magnet
Weakened region is located at the inner wall of the magnet.
4. magnet according to claim 3, it is characterised in that：On the circumferencial direction around the magnet center axis, institute
The magnetic flux density for stating magnet is in Sine distribution, and the magnetic hill region of the magnet is corresponding with the peak regions of the magnetic flux density,
The regions Ci Gu of the magnet are corresponding with the valley regions of the magnetic flux density.
5. magnet according to claim 4, it is characterised in that：The corresponding magnet inner wall in the regions Ci Gu is along magnetic
The plane of body axial direction.
6. according to the magnet described in claim 1-5 any one, it is characterised in that：The magnet thickness is by the magnetic hill region
It is gradually thinning towards the regions Ci Gu.
7. magnet according to claim 6, it is characterised in that：The corresponding magnet inner wall in the magnetic hill region is cambered surface
Shape.
8. magnet according to claim 6, it is characterised in that：The corresponding magnet in magnetic hill region and the magnetic paddy
It is to seamlessly transit between the corresponding magnet in region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594373.4A CN108565993A (en) | 2018-06-11 | 2018-06-11 | A kind of magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594373.4A CN108565993A (en) | 2018-06-11 | 2018-06-11 | A kind of magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108565993A true CN108565993A (en) | 2018-09-21 |
Family
ID=63553472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810594373.4A Pending CN108565993A (en) | 2018-06-11 | 2018-06-11 | A kind of magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108565993A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002058186A (en) * | 2000-08-07 | 2002-02-22 | Matsushita Seiko Co Ltd | Dc motor |
| CN1770595A (en) * | 2004-09-16 | 2006-05-10 | 三菱电机株式会社 | Ring type sintered magnet |
| CN101162638A (en) * | 2006-09-25 | 2008-04-16 | 松下电器产业株式会社 | Permanent magnet motor, electrical device and method for manufacturing permanent magnet |
| JP2008092702A (en) * | 2006-10-03 | 2008-04-17 | Mitsubishi Electric Corp | Ring-type sintered magnet, rotor, and dynamo-electric machine |
| CN101689424A (en) * | 2007-06-28 | 2010-03-31 | 日立金属株式会社 | R-TM-B radial anisotropic ring magnet, process for production of the same, metal mold for producing the same, and rotor for brushless motor |
| CN103794329A (en) * | 2014-02-27 | 2014-05-14 | 张家港倍恩特磁塑科技有限公司 | Radial magnetization plastic magnet |
| CN103904851A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft |
| CN205377468U (en) * | 2015-11-09 | 2016-07-06 | 杭州千石科技有限公司 | A continuous magnetic ring that is used for radial thickness that varies of motor stator and external rotor |
| CN208226685U (en) * | 2018-06-11 | 2018-12-11 | 成都银河磁体股份有限公司 | A kind of magnet |
-
2018
- 2018-06-11 CN CN201810594373.4A patent/CN108565993A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002058186A (en) * | 2000-08-07 | 2002-02-22 | Matsushita Seiko Co Ltd | Dc motor |
| CN1770595A (en) * | 2004-09-16 | 2006-05-10 | 三菱电机株式会社 | Ring type sintered magnet |
| CN101162638A (en) * | 2006-09-25 | 2008-04-16 | 松下电器产业株式会社 | Permanent magnet motor, electrical device and method for manufacturing permanent magnet |
| JP2008092702A (en) * | 2006-10-03 | 2008-04-17 | Mitsubishi Electric Corp | Ring-type sintered magnet, rotor, and dynamo-electric machine |
| CN101689424A (en) * | 2007-06-28 | 2010-03-31 | 日立金属株式会社 | R-TM-B radial anisotropic ring magnet, process for production of the same, metal mold for producing the same, and rotor for brushless motor |
| CN103794329A (en) * | 2014-02-27 | 2014-05-14 | 张家港倍恩特磁塑科技有限公司 | Radial magnetization plastic magnet |
| CN103904851A (en) * | 2014-03-28 | 2014-07-02 | 湖北立锐机电有限公司 | Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft |
| CN205377468U (en) * | 2015-11-09 | 2016-07-06 | 杭州千石科技有限公司 | A continuous magnetic ring that is used for radial thickness that varies of motor stator and external rotor |
| CN208226685U (en) * | 2018-06-11 | 2018-12-11 | 成都银河磁体股份有限公司 | A kind of magnet |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180921 |
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| RJ01 | Rejection of invention patent application after publication |