CN102468724A - Manufacturing method of rotor of outer rotor motor and the rotor of the outer rotor motor - Google Patents
Manufacturing method of rotor of outer rotor motor and the rotor of the outer rotor motor Download PDFInfo
- Publication number
- CN102468724A CN102468724A CN2011103931995A CN201110393199A CN102468724A CN 102468724 A CN102468724 A CN 102468724A CN 2011103931995 A CN2011103931995 A CN 2011103931995A CN 201110393199 A CN201110393199 A CN 201110393199A CN 102468724 A CN102468724 A CN 102468724A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- cylinder ring
- rotor
- ring
- side face
- 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.)
- Granted
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Classifications
-
- 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
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2788—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
Abstract
The invention relates to a manufacturing method of a rotor (17) of an outer rotor motor. An annular sheet shaped permanent magnet (7) is arranged along the periphery (4) of a cylindrical body. A cylindrical ring (8) is disposed below a tensile on the outer surface of the permanent magnet (7) and is connected to the cylindrical ring (8) through the bottom (13). An opening (14) of the bottom (13) is arranged on the body (1) coaxially. Further, the invention also relates to the rotor.
Description
Technical field
The present invention relates to a kind of manufacturing approach of rotor of external rotor electric machine, ring plate shape permanent magnet is arranged on the cylinder ring, and this cylinder ring is connected the bottom with the central opening that is used for motor shaft.
Further; The present invention relates to a kind of rotor of external rotor electric machine; It comprises bottom and this central opening of coaxial surrounding with the central opening that is used for motor shaft and is installed in the cylinder ring on this bottom and is arranged on the ring plate shape permanent magnet on the inner side face of cylinder ring.
Background technology
External rotor electric machine for example is used in the sealed refrigeration compressor, for example, is contained in domestic refrigerator or the air-conditioning system.Such refrigerant compressor must possess little component height, so that possibly limiting of refrigeration space capable of using reached minimum.In this connection, use the external rotor electric machine that has outboard rotor to possess advantage, because this motor has littler component height and has same performance compared with the drive motors that has built-in rotor as drive motors.
The manufacturing of external rotor electric machine rotor is for example described in the DE102008017276A1.Wherein used a kind of annular bottom portion that has central opening, this bottom comprises the circumferential wall of radially extending.Cylinder ring is placed in the inside of this circumferential wall.Then, ring plate shape permanent magnet is placed in the inside of cylinder ring, retaining element is arranged between the adjacent permanent magnets.Retaining element and bottom can prevent moving axially of permanent magnet.Retaining element and cylinder ring can prevent moving radially of permanent magnet, and wherein this cylinder ring is positioned on the circumferential wall of bottom.
Can make the stable rotor of external rotor electric machine with a kind of like this method.But,, require very accurately to adjust the inner surface of outboard rotor or permanent magnet and the space between the built-in stator in order to improve this efficiency of motor.And for existing manufacturing approach, this still is far from being enough.
Summary of the invention
Therefore, the present invention is based on the requirement of simplifying the rotor manufacturing process, provide a kind of like this and can allow the method that has less space between the rotor.
According to the present invention; Method mentioned in introduction can address this problem; Wherein permanent magnet is along the side face setting of columnar body portion, and cylinder ring is placed on the radially-outer surface of permanent magnet then, follows the mode of axially aligning with the side face of opening and main part the bottom and is connected on the cylinder ring.
Traditional method that rotor is installed from outside to inside; Its mode through axial external support surface defines the position of permanent magnet; And the present invention replaces the employing said method; Earlier with the set inside of permanent magnet on the outer peripheral face of cylindrical body portion, it can limit the position of bottom split shed simultaneously, and this opening can guide motor shaft to pass.Therefore, can directly align with motor shaft or central opening in the inner position of permanent magnet, rather than from the outside via side face and cylinder ring position.This means the error that in the process of making bottom or cylinder ring, produced not can to permanent magnet with and the location of position exert an influence.The accuracy of making only depends on the accuracy of main part.And can eliminate the influence of imperfect shape, the sum of errors of eliminating single permanent magnet is eliminated the error of accomplishing cylinder ring on the internal rotor diameter.
Preferably, the bottom is fixed on the axial front of cylinder ring, especially can be through welding or the mode of glueing joint.Also can adopt other installation method.Therefore, the bottom can not limited shape with respect to the position of cylinder ring, especially can not limited the radially guide vane end stop of bottom.On the contrary, this location is only produced limiting of main part, and this main part and bottom or bottom are with respect to the register of permanent magnet.This cylinder ring just can be fixed on surrounding permanent magnet the time on the bottom.Therefore, the position of this cylinder ring on the bottom limited the position of permanent magnet with respect to opening.
Advantageously, used main part comprises first with first side face and the second portion with second side face, and this second portion has littler diameter than first, and two parts setting coaxially to each other.In this connected, the external diameter of the external diameter of first or first side face was equal to stator nominal outside diameter and desired rotor space sum.The external diameter of the diameter of second portion or second side face equals the diameter of bottom split shed.Therefore, ring plate shape permanent magnet is placed on first side face and can it be provided with respect to second side face or with respect to the opening in the bottom accurately.If desired, also third part can be set, it has than the bigger diameter of first and can be arranged in the first towards the side away from second portion, and this third part can be used as the axial support to permanent magnet.In this connected, the axial location of permanent magnet also can be limited main part, so that simplified manufacturing technique.
Preferably, between any two adjacent permanent magnets, retaining element can be set.At first, these retaining elements are fixed to one another with permanent magnet, and especially prevent radially moving to interior orientation of permanent magnet.In addition, they can be connected on the cylinder ring through the mode that hook ends.They can partially or even wholly cover permanent magnet towards the axial side away from the bottom in this connects, and therefore can prevent that also permanent magnet from moving axially.
Advantageously, the end difference of bottom is axially disposed within on the cylinder ring.And in the open area, the bottom has axial distance with respect to permanent magnet or cylinder ring.Can more space be provided for stator is installed like this, and especially can help high efficiency work like this on axial direction so that the inner radial of permanent magnet is covered by stator fully.
Preferably, use a pretension that cylinder ring is arranged on the permanent magnet.When cylinder ring was set, this can be so that permanent magnet be pressed against on the side face of main part.In this connected, this pretension can balanced issuable error, so that permanent magnet has no remaining in the cylinder ring of gap.This pretension can be enough fully with cylinder ring against remaining on the permanent magnet.That like this, just need not add fully is fixing.
In a preferred embodiment, cylinder ring may be made in split ring, and it is pressed on the magnet and by enclosed construction from radially outer and seals.Can simplify installation like this, owing to this ring can need not to use bigger external force around the permanent magnet setting, this means up to being activated at enclosed construction just needs to use this pretension.
Especially be preferably enclosed construction is placed in the permanent magnet back.Laying of this closed-loop can make that issuable obstruction was minimum when magnetic flux passed cylinder ring.
Technical problem to be solved by this invention is able to solve through the rotor form of mentioning in introducing, and wherein the axial front of cylinder ring is fixed on the bottom, and the outer radial periphery face of cylinder ring is mobilizable (free).
This rotor can make according to method of the present invention.Because the outer radial periphery face of cylinder ring is mobilizable, and this cylinder ring only is that axial front is fixed on the bottom, should be can movable relatively (free) with respect to location in the radial direction at cylinder ring of bottom.Therefore, cylinder ring can't limit the position of permanent magnet on the bottom in the position on the bottom.On the contrary, cylinder ring can be at first with the bottom on permanent magnet align independently, and and then cylinder ring is fixed on the bottom.Therefore, point-device adjusting can be carried out with respect to the central opening that is used for the guide motor axle on the bottom in the position of the position of permanent magnet or permanent magnet inner face.The forming errors of cylinder ring and bottom can not exert an influence to it.
Preferably, fixture is arranged between any two adjacent permanent magnets, and this fixture is especially flexible and can permanent magnet kept putting in place through supporting installation.This fixture can limit the axial location and the permanent magnet position relative to each other of permanent magnet.The supporting installation maintenance that this elasticity embodiment can eliminate peak tensions and permanent magnet is feasible, and the elastic strain of this fixture acts in the whole erection process.
Preferably, ring plate shape permanent magnet has outer curvature radius, should be greater than the internal diameter of cylinder ring.This embodiment is that permanent magnet only is placed on the cylinder ring two qualification positions.This extension supporter than permanent magnet in manufacturing process is simpler, because it requires accurate the connection between the internal diameter of the external diameter of permanent magnet and cylinder ring.Therefore, can be minimum with causing the danger of damage to reduce to frequent frangible permanent magnet owing to coarse manufacturing.
Description of drawings
Next, on the basis of preferred embodiment, the present invention is carried out detailed description in conjunction with accompanying drawing, as follows:
Accompanying drawing 1a shows the method step of making rotor to 1f,
Accompanying drawing 2 is exploded views of rotor,
Accompanying drawing 3 is vertical views of rotor.
Embodiment
Fig. 1 a shows the main part 1 that is used to make rotor, and this main part comprises first 2 with first side face 3 and the second portion 4 with second side face 5.This first 2 is provided with second portion 4 coaxially to each other, and this second portion 4 is axially disposed within the front of first 2.First 2 is provided with third part 6 towards the side away from second portion 4, and it has the external diameter bigger than first 2.The diameter of second portion 4 is minimum.
The diameter of first 2 equals stator nominal outside diameter and desired rotor space sum.The diameter of second portion 4 equals the diameter of motor shaft.The diameter of third part 6 is more unessential, because third part 6 only is used as the axial support surface of permanent magnet.
In Fig. 1 b, ring plate shape permanent magnet 7 is arranged on the side face 3 of first 2.Third part 6 only is used as the axial support surface of permanent magnet 7.
Fig. 1 c shows next step of method, and wherein cylinder ring 8 is arranged on the radially outer of permanent magnet 7.In the rotor of processing, cylinder ring 8 is for being used for the yoke ring of magnetic flux and on permanent magnet 7, applying radially the tension force to interior orientation.
Fig. 1 d shows the vertical view of main part 1, and wherein permanent magnet 7 all aligns with second portion 2 with cylinder ring 8.Between permanent magnet 7, be provided with retaining element 9.Retaining element 9 has the pillar 10,11 of V-shape, and the circumferential end of itself and permanent magnet 7 adapts.Further, retaining element 9 has radially tongue piece 16, and its inwall with cylinder ring 8 is meshed.Because to a great extent, the internal diameter of permanent magnet 7 equals the external diameter of main part 1, therefore when cylinder ring 8 is installed, can avoid load excessive on the magnet.
In Fig. 1 e, the bottom 13 with opening 14 has been placed on the second portion 4 of main part 1.This also means bottom 13 with respect to main part location, and to be opening 14 limited by main part 1 with respect to the position of permanent magnet 7 meaning in advance.After the fixed-site with discrete component, bottom 13 is fixed to axial positive 15 of cylinder ring 8 by this way.In this embodiment, bottom 13 is for being welded on the cylinder ring 8.
Fig. 1 f shows the final step of this method, and wherein main part 1 removes from the rotor of processing 17.The bottom 13 that is provided has opening 18, in the process of operation, can the lubricant that gather in the peripheral hardware rotor be drained in the oil storage tank through this opening.
Fig. 2 is the exploded view of rotor 17, therefrom can see the separate elements on the rotor 17.In this embodiment, bottom 13 comprises end difference 19, axially is mounted with cylinder ring 8 on it.This cylinder ring 8 manufactures the split ring with groove 12, and also has the enclosed construction 20 that is molded as with groove 12 corresponding shaping on this split ring.
Retaining element 9 has axial teat 21,22,23, and they can be with permanent magnet 7 axial restraints.
Fig. 3 is the vertical view of the rotor 17 processed.Can find out that the outer radius of permanent magnet 7 is greater than the inside radius of cylinder ring 8.Therefore, permanent magnet will only be placed on the cylinder ring 8 at 24,25 places, two positions.Because the internal diameter of permanent magnet 7 is substantially equal to the external diameter of main part 1, so the installation meeting of cylinder ring produces radial effect power on magnet, this active force from the position 24,25 to the centre of rotor effect.It has prevented the load of generation on the permanent magnet 7 of central area, and this load can cause damage to frangible relatively permanent magnet.
According to the method for the invention, rotor is not installation from outside to inside, but installation from inside to outside.Like this can be with respect to the opening in the bottom or inner, can obtain to have the space of very little error with respect to the point-device adjusting permanent magnet in the position of motor shaft.The use of main part can make its manufacturing have very high geometrical accuracy, and manufacturing cost keeps lower.
Claims (11)
1. the manufacturing approach of the rotor of an external rotor electric machine; Ring plate shape permanent magnet is arranged on the cylinder ring; And this cylinder ring is connected the bottom with the central opening that is used for motor shaft; It is characterized in that: said permanent magnet is along the side face setting of columnar body portion, and cylinder ring is placed on the radially-outer surface of permanent magnet then, follows the mode of axially aligning with the side face of said opening and main part said bottom and is connected on the cylinder ring.
2. according to the method for claim 1, it is characterized in that: said bottom is fixed on the axial front of cylinder ring, especially can be through welding or the mode of glueing joint.
3. according to the method for claim 1 or 2; It is characterized in that: used main part comprises first with first side face and the second portion with second side face; This second portion has littler diameter than first, and two parts are provided with coaxially to each other.
4. according to the method for one of claim 1 to 3, it is characterized in that: retaining element is arranged between any two adjacent permanent magnets.
5. according to the method for one of claim 1 to 4, it is characterized in that: the end difference of said bottom axially is arranged on the cylinder ring.
6. according to the method for one of claim 1 to 5, it is characterized in that: use a pretension that cylinder ring is arranged on the permanent magnet.
7. according to the method for one of claim 1 to 6, it is characterized in that: said cylinder ring may be made in split ring, and it is pressed on the magnet and by enclosed construction from radially outer and seals.
8. according to the method for claim 7, it is characterized in that: this enclosed construction is arranged on the back of permanent magnet.
9. the rotor of an external rotor electric machine; Particularly according to the rotor of the method manufacturing in the aforementioned claim; It comprises bottom and this central opening of coaxial surrounding with the central opening that is used for motor shaft and is installed in the cylinder ring on this bottom and is arranged on the ring plate shape permanent magnet on the inner side face of cylinder ring; It is characterized in that: the axial front (15) of said cylinder ring (8) is fixed on the bottom (13), and the outer radial periphery face of cylinder ring (8) is mobilizable.
10. according to the rotor of claim 9, it is characterized in that: retaining element (9) is arranged between any two adjacent permanent magnets (7), and this retaining element (9) is especially flexible and can permanent magnet (7) kept putting in place through supporting installation.
11. the rotor according to claim 9 or 10 is characterized in that: ring plate shape permanent magnet (7) has outer curvature radius, and this outer curvature radius is greater than the inside radius of cylinder ring (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010051264A DE102010051264A1 (en) | 2010-11-12 | 2010-11-12 | Method for manufacturing rotor of external rotor motor, involves connecting base portion in such a manner with cylinder ring that the aperture is concentrically aligned to peripheral surface of cylindrical die |
| DE102010051264.8 | 2010-11-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102468724A true CN102468724A (en) | 2012-05-23 |
| CN102468724B CN102468724B (en) | 2014-08-20 |
Family
ID=45998884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110393199.5A Expired - Fee Related CN102468724B (en) | 2010-11-12 | 2011-11-14 | Manufacturing method of rotor of outer rotor motor and the rotor of the outer rotor motor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102468724B (en) |
| DE (1) | DE102010051264A1 (en) |
| RU (1) | RU2493644C2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018125918A (en) * | 2017-01-30 | 2018-08-09 | シナノケンシ株式会社 | Outer rotor motor |
| EP4131733A1 (en) * | 2021-08-06 | 2023-02-08 | Askoll Holding S.r.l. a socio unico | Permanent magnet external rotor for electric motor, electric motor comprising said rotor and method for manufacturing said external rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727302A (en) * | 1970-08-03 | 1973-04-17 | Phelon Co Inc | Method of making an annular assembly of magnets for use as the field of a dynamoelectric machine |
| US5998902A (en) * | 1999-02-15 | 1999-12-07 | Brunswick Corporation | Magnet ring assembly for an electrical generator |
| CN1294435A (en) * | 1999-11-02 | 2001-05-09 | 许俊甫 | Anti-loosening external rotor of motor with high-torsion external rotor |
| DE102004042927A1 (en) * | 2004-09-02 | 2006-03-09 | Heinz Leiber | Rotary electrical machine with permanent magnet excitation, has stator in two axially-adjacent parts forming intermediate gap containing disc rotor components |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2734958B1 (en) * | 1995-06-02 | 1997-07-04 | Ugimag Sa | DEVICE FOR FASTENING MAGNETS ON STATOR OR ROTOR HEAD OF ELECTRIC MOTORS |
| EP1380093B1 (en) * | 2001-03-24 | 2013-05-08 | LG Electronics, Inc. | Mover assembly of reciprocating motor and fabrication method thereof |
| WO2004001930A1 (en) * | 2002-06-20 | 2003-12-31 | Kabushiki Kaisha Toshiba | Rotor for external rotor-type permanent magnet motor |
| RU2230420C1 (en) * | 2003-06-05 | 2004-06-10 | Открытое Акционерное Общество "Акционерное Конструкторское Бюро "Якорь-2" | Method for installing permanent magnets in electrical machine rotor |
| DE102004030063A1 (en) * | 2004-06-23 | 2006-03-16 | Heinz Leiber | Permanent magnet excited rotating field machine |
| JP2008516581A (en) * | 2004-10-08 | 2008-05-15 | デーウー・エレクトロニクス・コーポレイション | Rotor of outer rotor type motor for washing machine |
| RU64448U1 (en) * | 2007-03-05 | 2007-06-27 | Открытое Акционерное Общество "Агрегатное Конструкторское Бюро "Якорь" | ROTOR ASSEMBLY DEVICE |
| RU2346375C1 (en) * | 2007-06-05 | 2009-02-10 | Александр Владимирович Левин | Method of assembling high-speed electrical machine rotor |
| DE102008017276A1 (en) | 2008-04-04 | 2009-10-15 | Danfoss Compressors Gmbh | Rotor for an electric drive motor of a refrigerant compressor |
-
2010
- 2010-11-12 DE DE102010051264A patent/DE102010051264A1/en not_active Ceased
-
2011
- 2011-11-08 RU RU2011144828/07A patent/RU2493644C2/en not_active IP Right Cessation
- 2011-11-14 CN CN201110393199.5A patent/CN102468724B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727302A (en) * | 1970-08-03 | 1973-04-17 | Phelon Co Inc | Method of making an annular assembly of magnets for use as the field of a dynamoelectric machine |
| US5998902A (en) * | 1999-02-15 | 1999-12-07 | Brunswick Corporation | Magnet ring assembly for an electrical generator |
| CN1294435A (en) * | 1999-11-02 | 2001-05-09 | 许俊甫 | Anti-loosening external rotor of motor with high-torsion external rotor |
| DE102004042927A1 (en) * | 2004-09-02 | 2006-03-09 | Heinz Leiber | Rotary electrical machine with permanent magnet excitation, has stator in two axially-adjacent parts forming intermediate gap containing disc rotor components |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2011144828A (en) | 2013-05-20 |
| RU2493644C2 (en) | 2013-09-20 |
| CN102468724B (en) | 2014-08-20 |
| DE102010051264A1 (en) | 2012-05-16 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20201114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |