CN103339827A - Electric motor having an improved magnet-retaining ring and method for producing the magnet-retaining ring - Google Patents
Electric motor having an improved magnet-retaining ring and method for producing the magnet-retaining ring Download PDFInfo
- Publication number
- CN103339827A CN103339827A CN2011800549884A CN201180054988A CN103339827A CN 103339827 A CN103339827 A CN 103339827A CN 2011800549884 A CN2011800549884 A CN 2011800549884A CN 201180054988 A CN201180054988 A CN 201180054988A CN 103339827 A CN103339827 A CN 103339827A
- Authority
- CN
- China
- Prior art keywords
- retainer ring
- magnet
- rotor
- magnetic retainer
- sheet
- 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.)
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Abstract
The invention relates to an electric motor having an improved magnet-retaining ring and comprising a stator (10) and a rotor (20) which is mounted so as to be able to rotate relative to the stator (10), the stator (10) having a housing (30) and a magnet-retaining ring (40). The magnet-retaining ring (40) also comprises at least one magnet-holder region (50) for accommodating at least one magnet (60), and the magnet-retaining ring (40) consists of a plurality of lamellae (70).
Description
Technical field
The present invention relates to a kind of motor of magnet that is particularly useful for having simple geometric shape with magnetic retainer ring, wherein reduced the magnetic resistance of magnetic circuit in the motor.
Background technology
The magnetic retainer ring is responsible in having the motor of permanent magnet for generation of magnetic field, makes magnet on enclosure interior is positioned at for the position of its setting and keeps its position.Particularly advantageously be applicable to the magnet of the geometry with what is called " simply " by magnetic retainer ring of the present invention.The differentiation that has between the magnet of geometry of " simply " and " complexity " realizes in the scope of specification with reference to Fig. 4 and Fig. 5.Be suitable for following situation at large, namely owing to littler magnetic resistance in the motor magnetic circuit of the magnet with " complexity " geometry, when efficient is identical, realized shorter structure with respect to the magnet with " simply " geometry.
By the motor of type of the present invention especially be used in or in its environment, support the driver (in glass regulator, as the servomotor that is used for outside rear-view mirror, in chair regulator, etc.) or in auxiliary system, for example be used as in the automobile of actuator among ABS or the ESP.
A kind of motor is disclosed from DE 10 2,009 060 972 A1, wherein in toroidal shell, there is frame element, wherein arranged a large amount of permanent magnets in the circumference range of side within it, described permanent magnet relends and helps groove shape and remain on ordinatedly on the inboard of frame element.The shortcoming here is, employed permanent magnet has the geometry of " complexity ", this permanent magnet is significantly more expensive with respect to the permanent magnet with " simply " geometry, though thereby its advantage aspect the small construction space, it uses still gets rid of in the scope to cost sensitivity of automobile making.
Summary of the invention
Therefore, task of the present invention provides a kind of motor of magnet that is particularly useful for having " simply " geometry of the magnetic retainer ring with improvement, and it has reduction in the magnetic circuit of motor magnetic resistance has reduced the structure space of motor thus.In addition, should reduce the manufacturing cost of magnetic retainer ring.
By the present invention, described task is by being resolved by the described device of claim 1 and by the described method for its manufacturing of claim 9.
Favourable design of the present invention and preferred embodiment obtain explanation in the dependent claims.
The motor of the current magnetic retainer ring with improvement comprises stator and about can be the rotatably supported rotor of stator, wherein stator has housing and magnetic retainer ring.In addition, this magnetic retainer ring has at least one magnet housing region and is used for holding corresponding at least one magnet.Described magnetic retainer ring comprises a large amount of sheets.
In the current motor of the magnetic retainer ring with improvement, because its structure comprises just that by means of sheet the layer structure of the single in a large number layer of placing up and down can be placed in the magnet with " simply " geometry in the magnetic retainer ring, makes each sheet simply and each chip bonding is become the magnetic retainer ring simultaneously.This for example can the cross section by means of sheet on the selected position so-called tie point realize.The sheet of preferred described magnetic retainer ring is made by electromagnetic material, especially so-called magnetic holding plate, and it has reduced the magnetic resistance of magnetic retainer ring.
Another advantage of the motor of the current magnetic retainer ring with improvement is, in the scope of making the sheet that is used for rotor, make the scheme of each sheet that is used for the magnetic retainer ring, this can realize in the manufacturing step in the back on the same mould, thereby realizes using for the more favourable material economically of chip metallic plate.
In addition, can be made by identical materials at current motor rotor and magnetic retainer ring.Even thereby the parts that have other geometry in manufacturing also can be realized the manufacturing for the sheet of magnetic retainer ring during as rotor sheet with same material, wherein need extra manufacturing step to be used for separating the sheet of magnetic retainer ring, this can cause replenishing mould with the extra fabrication stage.At this, obtained the more advantage of the employed metallic plate of good utilisation too by the sheet of from the section of the metallic plate that continues motion, making the magnetic retainer ring extraly, otherwise this metallic plate also will be removed as waste material.
In addition, described rotor can comprise a large amount of rotor sheets, and the thickness of the sheet of magnetic retainer ring can be equivalent to the thickness of rotor sheet basically.Thus, can not only in manufacture process, make the sheet of rotor in particularly advantageous mode, and can in manufacture process, make the sheet that is used for the magnetic retainer ring, wherein exist for the manufacture of the mould of rotor sheet in also need the extra fabrication stage is inserted in this mould, this stage need be used for preferably coming the separately sheet of magnetic retainer ring by means of punching press.In addition, significantly increase the utilization of employed material, because formed the parts that are used for motor with extra manufacturing step, and reduced the weight of obsolete material simultaneously.
In current motor, two corresponding being perpendicular to one another of magnet housing region of successively following around direction along rotor ring of magnetic retainer ring.In this configuration, employed number of magnets and be used for to drive has realized good economically compromise proposal aspect the characteristic in housing magnetic field of motor of rotor in the magnetic retainer ring.
In addition, in current motor, the magnetic retainer ring has the bridge areas as there of the sensing rotor direction of adjacency in the scope of magnet housing region.In addition, the distance between magnet housing region and the bridge areas as there can be along with away from the increase of the distance of the central area of magnet housing region and increase.It is favourable that the structure described above of bridge areas as there has in use aspect the magnet of " simply " geometry especially, because it does not have the bridge areas as there ground of respective design to have along with the air gap between rotor surface and magnet housing region that becomes increasing to the increase of the distance of the central area of magnet housing region, significantly improved the magnetic resistance of the magnetic circuit of motor thus.Current bridge areas as there is responsible for reducing the radially distance between rotor surface and bridge areas as there.This equally also is applicable to air gap length between magnet and the rotor surface.
According to the preferred design of motor, two of magnet retainer ring bridge areas as there of successively following around direction along rotor ring are corresponding spatially separates.At this, the width of bridge areas as there basically can be corresponding to the width of at least one magnet in the magnet housing region, and the magnet housing region of successively following for example connects by means of contact pin, wherein the structure of contact pin is followed the structure of housing in this section basically, thereby has being connected of form fit between contact pin and the housing.This has caused the as far as possible little weight of the sheet of magnetic retainer ring, has almost reduced the weight of magnet retainer ring thus.
In another aspect, the thickness of magnet retainer ring can be equivalent to the length of rotor at least.
According to the preferred design of motor, described at least one magnet in the magnet housing region can correspondingly have the structure of cuboid basically.This structure of described at least one magnet in the magnet housing region has caused the manufacturing with low cost of magnet, and this can obviously perceive again with respect to the manufacturing cost of the magnet with " complexity " geometry.Because set bridge areas as there on the magnet housing region, can reduce air gap radially in the magnet length between magnetic retainer ring and the rotor in other words, thereby not only can realize the compact structure space of motor, and can realize having the use of the magnet with low cost of " simply " geometry.
According to the preferred design of motor, at least one magnet at least one magnet housing region not only contacts with the magnetic retainer ring, and contacts with housing.Can in current motor, magnet be held to form fit at least and remain in the magnetic retainer ring thus, and housing is responsible for stoping magnet radially to move.
According on the other hand, the present invention includes a kind of method for the manufacture of the magnetic retainer ring, it has the step that metallic plate is provided and the step of telling rotor sheet from metallic plate.In addition, this method can comprise metallic plate is continued the step of motion around the numerical value that obtains from the maximum gauge of rotor sheet and predetermined added size, makes the profile of the rotor sheet told fully in the internal circumference scope of the projected outline of the sheet that is used for the magnetic retainer ring to the metallic plate that continues motion.In addition, described method can comprise the step of telling for the sheet of magnetic retainer ring from the metallic plate that continues motion.At this, should realize along the operative orientation for the manufacture of the affiliated mould of magnetic retainer ring in steps.
In the step of the sheet of telling rotor sheet and magnetic retainer ring, should preferably use process for stamping.As its replacement scheme, also can consider to separate by means of laser at number of packages after a little while.
According to the preferred design of this method, can be by means of multistage mould implementation method step.At this, can implement all manufacturing steps for the manufacture of two kinds of parts at unique mould, be directly used in and continued processing thereby saved instrument conversion when making and two metal plate components of therefrom telling.
Description of drawings
Explain preferred implementation below with reference to the accompanying drawings in detail.
Fig. 1 shows the schematic cross sectional views of current motor from seeing previously of the magnetic retainer ring with improvement,
Fig. 2 shows the perspective schematic view by the motor of Fig. 1,
Fig. 3 a shows front view by the significant components of the stator of the current motor of Fig. 1 to 3c,
Fig. 4 shows when the geometry of " complexity " of using magnet the explanatory view of air gap between the rotor and magnet,
Fig. 5 shows when the geometry of " simply " of using magnet the explanatory view of air gap between the rotor and magnet,
Fig. 6 a shows the schematic diagram of each grade when the rotor sheet of making by prior art to 6c, and
Fig. 7 a shows the schematic diagram of each grade when the sheet of the rotor sheet that make to be used for current motor and magnetic retainer ring to 7c.
Embodiment
Fig. 1 shows the schematic cross sectional views of current motor from seeing previously of the magnetic retainer ring 40 with improvement, and this magnetic retainer ring is arranged in the inside of stator 10.Below identical Reference numeral represent identical parts.
The stator 10 of current motor comprises housing 30, can support the rotor (not shown) rotatably in this housing.In addition, be connected with the inner peripheral surface of housing 30 to magnetic retainer ring 40 form fit.This magnetic retainer ring 40 is used for four permanent magnets 60,61,62,63 form fit ground in housing 30 inner its positions that keep.At this, corresponding two permanent magnets of successively arranging around direction along rotor ring 60,61 are vertical mutually.
Fig. 2 shows the perspective schematic view by the motor of Fig. 1, wherein only partly shows housing 30.Magnetic retainer ring 40 is made of a plurality of (not shown)s, and described has identical construction respectively.The material that each sheet of magnetic retainer ring 40 comprises magnetic conduction is magnetic holding plate for example.The thickness of this magnetic retainer ring 40 is approximately 10-15mm.
Fig. 3 a shows significant components by the stator 10 of the current motor of Fig. 1 to 3c with front view.Housing 30 among Fig. 3 a has following structure, and namely wherein the section of corresponding two orthogonal straight sections by rounding connects.Fig. 3 b shows permanent magnet 60,61,62,63 deployment scenarios in housing 30 inside, and described permanent magnet is arranged in the scope of its straight section and is in contact with it.Described permanent magnet 60,61,62,63 has the structure of parallelepiped shape respectively.
Fig. 3 c shows the front view of magnetic retainer ring 40, and this magnetic retainer ring 40 has four separated magnet housing regions 50,51,52,53 and is used for holding one of corresponding permanent magnet.The magnet housing region that corresponding two priorities are followed interconnects by contact pin 45, and its structure is provided in advance by the structure of the section of the rounding of housing 30.In addition, each magnet housing region 50,51,52,53 has bridge areas as there 90,91,92,93 respectively, wherein the distance between magnet housing region 50 and the bridge areas as there 90 is along with increasing away from the increase of the distance of the center range of magnet housing region 50, make air gap radially the length between magnetic retainer ring and rotor keep constant and reduce in other words.
Fig. 4 always shows when the geometry of " complexity " of using magnet 220 schematic diagram of air gap between the rotor 210 and magnet 220.This magnet 220 is arranged in the inside of circular shell 200 and sticks on wherein.Have air gap 230 between the inboard of the excircle scope of rotor 210 and magnet 220, wherein air gap length radially can correspondingly keep constant and is reduced in other words.
At this, described magnet 220 has the geometry of " complexity ", be the type of the section of annular solid at this, wherein its outer surface provides in advance by the structure of the circle of housing 200, and its inner surface is owing to requirement radially constant according to air gap or that reduce described above has the structure of the bending that has predetermined diameter, and this diameter is slightly greater than the overall diameter of rotor.The less magnetic resistance of magnetic circuit when the advantage of magnet with the geometry of " complexity " is the motor operation.
Fig. 5 always shows when the geometry of " simply " of using magnet 220 schematic diagram of air gap between the rotor 210 and magnet 220.In this case, the geometry of " simply " is corresponding to the magnet of cuboid.This magnet 220 is connected with housing 200.With respect to the structure of the magnet 220 of pressing Fig. 4, this magnet 220 has the structure of " simply ", make air gap 230 radially the length between rotor 210 and magnet 220 along with away from the increase of the distance of its central area and increase.Significantly improved the magnetic resistance in the circuit of electromagnetism thus, thereby with respect to the motor of the magnet with " complexity " geometry, the length that has the motor of this magnet when efficient is identical can be bigger.
Important difference between the magnet with " simply " geometry and this magnet with " complexity " geometry is that the air gap length between magnet and rotor radially changes.Owing to make the magnet have " simply " geometry as far as possible cheaply, so this magnet has smooth structure at it in the face of in the bottom side scope of rotor, and this structure is at least together with the layout that comprises level orientation in other words.
Fig. 6 a shows the schematic diagram of each grade when the rotor sheet of making by prior art 80 to 6c.At this, metallic plate 100 at first is provided, this metallic plate especially is launched into the shape of the band of sheet by the coiled material (not shown).Fig. 6 a shows the section of the metallic plate 100 of this sheet.This metallic plate 100 is imported in mould (not shown)s and there and is preferably told rotor sheet 80 by means of process for stamping from metallic plate 100 under the situation of using the pressing mold (not shown) by means of the method for separating.Then, this metallic plate 100 continues to move around predetermined numerical value along operative orientation and repeats punching course described above.
Fig. 6 b shows the geometry on the section that rotor sheet 80 projects to metallic plate 100.Fig. 6 c shows the rotor sheet of therefrom telling 80 that is used for rotor 20 and the section that continues the metallic plate 110 of motion, and described rotor comprises a plurality of rotor sheets 80, tells rotor sheet 80 from described metallic plate.Continuing the surplus material of the metallic plate 110 of motion must remove as waste material.
Fig. 7 a shows the schematic diagram of each grade when the sheet 70 of the rotor sheet 80 that make to be used for current motor from metallic plate 100 and magnetic retainer ring to 7c.Fig. 7 a shows the section of metallic plate 100 again, and this metallic plate especially is launched into the shape of the band of sheet from the coiled material (not shown).The sheet 70 that Fig. 7 b shows rotor sheet 80 and is used for the magnetic retainer ring projects to the geometry on the section of metallic plate 100.In sheet 70 this method for the manufacture of the magnetic retainer ring, described metallic plate 100 same inputs in the mould (not shown)s and in first manufacturing step are especially told rotor sheet 80 by means of process for stamping by means of the method for telling from metallic plate 100 under the situation of using the pressing mold (not shown).Described metallic plate 100 continues to move along operative orientation around the numerical value of regulation then.This numerical value draws from the maximum gauge of rotor sheet 80 and predetermined added size, makes the profile of the rotor sheet 80 told fully in the inner periphery scope of the projected outline of the sheet 70 that is used for the magnetic retainer ring to the metallic plate that continues motion.
In second manufacturing step, preferably from the metallic plate that continues motion, tell the sheet 70 of magnetic retainer ring equally by means of process for stamping by means of the method for telling.Fig. 7 c shows the rotor sheet of therefrom telling 80, the sheet of therefrom telling 70 of magnetic retainer ring and the section that continues the metallic plate 110 of motion, tells the sheet 70 of rotor sheet 80 and magnetic retainer ring from this metallic plate.Owing to the sheet of additionally from the metallic plate 110 that continues motion, telling 70 that is used for the magnetic retainer ring, reduced remaining the weight that remains to be removed metallic plate, reduced the cost of accumulation for this reason thus simultaneously.
Claims (10)
1. have the motor of magnetic retainer ring, comprise
-stator (10), and
-about can be the rotatably supported rotor (20) of stator (10), wherein stator (10) has housing (30) and magnetic retainer ring (40),
And magnetic retainer ring (40) has at least one magnet housing region (50) and is used for holding corresponding at least one magnet (60), and this magnetic retainer ring (40) comprises a large amount of sheet (70).
2. by the described motor of claim 1, wherein, rotor (20) and magnetic retainer ring (40) are made by identical materials.
3. by claim 1 or 2 described motor, wherein, rotor (20) comprises a large amount of rotor sheet (80), and the thickness of the sheet of magnetic retainer ring (70) is equivalent to the thickness of rotor sheet (80) basically.
4. by each described motor in the aforesaid right requirement, wherein, two of magnetic retainer ring (40) corresponding being perpendicular to one another of magnet housing region (50,51) of successively following around direction along rotor (20).
5. by each described motor in the aforesaid right requirement, wherein, magnetic retainer ring (40) has the bridge areas as there (90) of sensing rotor (20) direction of adjacency in the scope of magnet housing region (50), and the distance between magnet housing region (50) and the bridge areas as there (90) along with and the central area of magnet housing region (50) between distance increase and increase.
6. by the described motor of claim 5, wherein, two of magnetic retainer ring (40) bridge areas as there (90,91) of successively following around direction along rotor (20) are corresponding spatially separates.
7. by each described motor in the aforesaid right requirement, wherein at least one magnet (60) in the magnet housing region (50) is corresponding has a structure of cuboid basically.
8. by each described motor in the aforesaid right requirement, wherein, at least one magnet (60) in described at least one magnet housing region (50) not only contacts with magnetic retainer ring (40), and contacts with housing (30).
9. for the manufacture of the method by at least one described magnetic retainer ring (40) in the claim 1 to 8, have following steps:
-metallic plate (100) is provided,
-from metallic plate (100), tell rotor sheet (80),
-make metallic plate (100) continue motion around the numerical value that from the maximum gauge of rotor sheet (80) and predetermined added size, draws, thereby make the profile of the rotor sheet (80) tell fully in the inner periphery scope of the projected outline of the sheet (70) that is used for the magnetic retainer ring to the metallic plate that continues motion
-from the metallic plate that continues motion, tell the sheet (70) for the magnetic retainer ring.
10. by the described method for the manufacture of magnetic retainer ring (40) of claim 9, wherein, implement described method step by means of the multistage mould.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010043977 DE102010043977A1 (en) | 2010-11-16 | 2010-11-16 | Electric motor with improved magnet retainer ring, and a method of manufacturing the magnet retainer ring |
| DE102010043977.0 | 2010-11-16 | ||
| PCT/EP2011/067296 WO2012065783A2 (en) | 2010-11-16 | 2011-10-04 | Electric motor having an improved magnet-retaining ring and method for producing the magnet-retaining ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103339827A true CN103339827A (en) | 2013-10-02 |
| CN103339827B CN103339827B (en) | 2016-05-18 |
Family
ID=44764150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180054988.4A Expired - Fee Related CN103339827B (en) | 2010-11-16 | 2011-10-04 | There is the motor of magnetic retainer ring and the method for manufacture magnetic retainer ring of improvement |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103339827B (en) |
| DE (1) | DE102010043977A1 (en) |
| WO (1) | WO2012065783A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013208179A1 (en) * | 2013-05-17 | 2014-11-20 | Robert Bosch Gmbh | A machine component for providing a magnetic field and electric machine with a machine component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169051A (en) * | 1996-03-31 | 1997-12-31 | 三洋电机株式会社 | Permanent magnet stator of motor |
| CN101379676A (en) * | 2006-02-01 | 2009-03-04 | 欧陆汽车有限责任公司 | Electric motor |
| CN101764446A (en) * | 2008-12-24 | 2010-06-30 | 德昌电机(深圳)有限公司 | Motor stator and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2730874B1 (en) * | 1995-02-16 | 1997-03-21 | Ugimag Sa | COMPOSITE INDUCTOR FOR ROTATING ELECTRIC MACHINES COMPRISING SINTERED PERMANENT MAGNETS COATED IN A FERROMAGNETIC BINDER |
-
2010
- 2010-11-16 DE DE201010043977 patent/DE102010043977A1/en not_active Ceased
-
2011
- 2011-10-04 CN CN201180054988.4A patent/CN103339827B/en not_active Expired - Fee Related
- 2011-10-04 WO PCT/EP2011/067296 patent/WO2012065783A2/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169051A (en) * | 1996-03-31 | 1997-12-31 | 三洋电机株式会社 | Permanent magnet stator of motor |
| CN101379676A (en) * | 2006-02-01 | 2009-03-04 | 欧陆汽车有限责任公司 | Electric motor |
| CN101764446A (en) * | 2008-12-24 | 2010-06-30 | 德昌电机(深圳)有限公司 | Motor stator and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵战峰等: "电机转子、定子冲压工艺分析及级进模具设计", 《锻压技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012065783A2 (en) | 2012-05-24 |
| CN103339827B (en) | 2016-05-18 |
| DE102010043977A1 (en) | 2012-05-16 |
| WO2012065783A3 (en) | 2013-08-08 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160518 Termination date: 20201004 |