WO2000033439A1 - Rotor d'alternateur de vehicule a aimants permanents intercalaires - Google Patents
Rotor d'alternateur de vehicule a aimants permanents intercalaires Download PDFInfo
- Publication number
- WO2000033439A1 WO2000033439A1 PCT/FR1999/002959 FR9902959W WO0033439A1 WO 2000033439 A1 WO2000033439 A1 WO 2000033439A1 FR 9902959 W FR9902959 W FR 9902959W WO 0033439 A1 WO0033439 A1 WO 0033439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alternator according
- plates
- elements
- magnets
- rotor
- Prior art date
Links
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
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
- H02K21/044—Rotor of the claw pole type
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
- H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Definitions
- the present invention relates generally to rotating machines such as alternators for motor vehicles of the type comprising a stator and a rotor.
- a rotor comprising a shaft, two plates threaded on the shaft and comprising overlapping horns, and permanent magnets arranged in the spaces between the horns.
- the magnets are held in place for example by means of a one-piece resin holding part receiving the magnets in housings and interposed between the plates and between the horns.
- the drawback of this device is that it requires mounting the various elements of the rotor in a certain order, namely housing the magnets on the holding part and attaching the plates on either side thereof. However, this order can be binding in relation to the organization of the assembly line.
- the holding piece extends between the magnets and the horns, as well as inside the rotor. It follows that the volume of the magnets and / or other parts of the rotor must be reduced, which reduces the performance of the alternator.
- An object of the invention is to provide a rotor of a different type, in particular allowing another order of assembly, and preserving the internal volume of the rotor in particular available for the magnets.
- a vehicle alternator comprising a rotor comprising a shaft, two plates comprising nested horns, magnets extending between the horns, and magnets holding members, in which the holding members extend opposite an external face of the axial end of the plates.
- the holding members are able to be attached to the rotor in an axial direction of the rotor, after the plates have been mounted.
- the portion of each holding member which extends opposite the external face of the axial end of the plate constitutes as much material which does not extend inside the rotor. The volume of the other parts of the rotor is therefore preserved as much.
- the holding members extend opposite a circumferential external face of the magnets.
- the holding members' comprise tabs adapted to each extend opposite a circumferential external face of two magnets.
- each tab comprises two flat parts separated by a fold parallel to an axis of the rotor.
- the tab takes into account the differences in inclination of the two magnets around the axis of the rotor without complicating the manufacture of the tab.
- each tab has a notch at an end edge of the tab.
- This notch makes it possible to accommodate the tip of the horn located opposite the lug and therefore to extend the lug on either side of the horn.
- the holding members each comprise a flange extending opposite one of the plates.
- each holding member has openings communicating with spaces located under the magnets.
- the holding members are directly fixed to the plates.
- the holding members are fixed to an external face of the axial end of the plates.
- the holding members are welded to the plates.
- each holding member extends continuously from one to the other of the external faces of the axial end of the respective plates.
- the holding members comprise first elements fixed to a first of the plates and extending along the magnets, and second elements fixed to the second plate and to the first elements.
- the second elements radially cover the first elements by reference to an axis of the rotor.
- the first elements radially cover the second elements by reference to an axis of the rotor.
- the first and second elements are each in one piece.
- Figure 1 is an elevational view of a rotor of an alternator according to a first embodiment of the invention
- Figure 2 is a view partially in elevation and partially in axial section of the rotor of Figure 1
- Figure 3 is an axial end view of the rotor of Figure 1
- Figures 4, 5 and 6 are partial views respectively in elevation, in axial view and in perspective with cutaway of a rotor of an alternator according to a second embodiment
- Figure 7 is a local cross-sectional view of the rotor of Figure 4
- Figure 8 is an exploded view of a magnet and two retaining members of the rotor of Figure 4
- Figure 9 is a view of one of the holding members of Figure 8 before folding
- Figures 10, 11 and 12 are front, top and left views of the holding member of Figure 9 after folding
- Figure 13 is a view of the other holding member
- the rotor 2 of the alternator for a motor vehicle comprises a shaft 4 of axis 6 and two pole plates 8 each comprising a wall 10 in the form of a disk of axis 6 and horns or polar claws 12.
- Each horn 12 has a generally triangular planar shape.
- the horns 12 of each plate 8 extend with their point in the direction of the other plate, being nested with the horns of the other plate and providing gaps between the adjacent horns.
- the rotor comprises permanent magnets 14 in the general shape of a parallelepiped, housed in the gaps between the adjacent horns 12 and glued to them.
- the rotor 2 comprises two holding members 16 each comprising a flange 18 in the form of a disc extending parallel and coaxially to the plates 8, against an external face with an axial end 20 of the wall 10.
- the flange 18 is fixed to the wall 10 of the plate by welding, screwing or clipping, at several points 22 as shown in FIG. 3.
- Each holding member 16 has tabs 24 constituting with the flange 18 a one-piece piece.
- the legs 24 each have a generally rectangular shape parallel to the axis 6 and to the circumferential external wall of the horns 12 and of the magnets 14.
- the legs 24 extend from the flange 18 in the direction of the other holding member. In addition, they extend in the direction of the tip of the pole horns 12 associated with the plate 8 to which the other holding member is fixed.
- each tab 24 has a free end edge that is rectilinear and orthogonal to the axis 6, having a notch 26 in the general shape of a "U" with divergent branches, adapted to receive the tip of the horn 12 towards which the tab 24 is directed.
- This notch 26 defines on the tab two tongues 28 which extend on either side of the horn 12 opposite and in contact with the circumferential external face of the two magnets 14 extending against the aforementioned horn.
- Each magnet 14 is held radially by a tongue 28 of a lug 24 at an axial end and by a tongue 28 of another lug at another axial end.
- Each tab 24 has a longitudinal fold 32 parallel to the axis 6 and dividing the tab into two plane parts symmetrical to each other with respect to the fold and slightly inclined with respect to each other to follow the corresponding inclination of the circumferential external faces of the magnets 14 against which the tab comes to bear.
- the two plates 8 are mounted on the shaft 4, one of the holding members 16 is attached axially against one of the plates 8, the magnets 14 are slid between the horns 12 from the location of the retaining member remaining to be installed, then this retaining member 16 is axially attached to the assembly.
- Each flange 18 has gills forming axial openings 30 at the birth of each tab 24. This position of the gills ensures the passage of air from one of the flanges to the other under the magnets 14 in the rotor.
- the permanent interpolar magnets 14 may be made of ferrite or rare earth. Depending on the applications, the two holding members 16 may have shapes and / or dimensions different from each other. The permanent magnets 14 may be arranged in radial support inwardly on a shoulder of the plates 8.
- Figures 4 to 15 illustrate a second embodiment of the alternator according to the invention in which the unchanged parts keep the same reference numbers .
- the rotor here comprises holding members constituted by two series of elements of maintenance.
- the first holding elements 42 are illustrated in FIGS. 13 to 15. They are identical to each other before folding and are after folding of two different types, mirror images of one another.
- the second holding elements 40 are identical to each other and illustrated in FIGS. 9 to 12.
- Each holding element 40, 42 here consists of a single piece of cut and folded sheet metal.
- each second retaining element 40 has a general "Y" shape wider than it is tall, having a lower leg 44 and two upper branches 46.
- a fold 48 extends in the direction of the height of the "Y", along the median of the foot 44, to generate two parts slightly inclined with respect to each other and thus giving the foot 44 a roof shape.
- Two other folds 50 parallel to this fold 48 extend to the limit of each branch 46 with the foot to fold the branches over 90 °.
- Two other folds 52 perpendicular to the previous two, extend halfway up the branches 46 to divide them into two roughly equal parts.
- each first retaining element 42 has a general "S" shape illustrated in FIG. 13, one end 52 of the "S” being very elongated, straight and inclined for s extend in the extension of the other end 54.
- a rectilinear fold 56 extends at the birth of the second end 54.
- Another fold 58 perpendicular to the previous one, extends in the intermediate part of the "S". The first fold 56 generates an inclination of 90 ° while the second fold 58 generates a slightly greater inclination.
- the first holding elements 42 are placed so that the long branch 52 of the "S" covers the entire interpolar space and the entire circumferential external face of the interpolar magnets 14 subsequently arranged between the horns.
- the small branch 54 is parallel to the external face of axial end 20 of one of the plates 8 and in surface contact with this face to which it is welded.
- the weld points are represented by circles. All the first elements 42 are thus welded to the same plate 8, the one on the left in FIG. 4.
- the inclination of the long branch 54 of the "S" corresponds to the inclination relative to the axis 6 of the rotor, of the space between the horns.
- first elements 42 having the respective inclinations.
- all the first elements 42 are cut in the same way, as in FIG. 13, but they are folded by orienting the folds 56, 58 sometimes on one side, sometimes on the other.
- Figures 14 and 15 thus represent one of these two types of first elements.
- the magnets 14 are then introduced into the spaces between the horns 12, from the second plate 8 and are glued to the first holding elements 42.
- the second holding elements 40 are placed so that the foot 44 in two parts covers the respective ends of the long ones. branches 52 of the first two holding elements 42 while being in surface contact therewith.
- the long branches 52 have at their end a recess giving them an "S" profile.
- the end part of this recess is thus covered radially by the second holding element 40 by reference to the axis 6, and fixed by welding to the latter.
- the ends of the branches 46 extend as for them on the external face of axial end 20 of the other plate 8 in surface contact with this one and are welded there. There are two times less second holding elements 40 than first holding elements 42.
- the long branches 52 do not have the recess and radially cover the foot 44 of the second holding elements 40 by reference to the axis 6, in surface contact with the latter , by being welded to it.
- each holding member is constituted by first and second elements 40, 42, and extends continuously from one to the other of the external faces of the axial end 20 of the plates 8.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Manufacture Of Motors, Generators (AREA)
- Synchronous Machinery (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99973187A EP1060555B1 (fr) | 1998-11-30 | 1999-11-30 | Rotor d'alternateur de vehicule a aimants permanents intercalaires |
JP2000585977A JP4328028B2 (ja) | 1998-11-30 | 1999-11-30 | 永久磁石が挟持されたロータを有する自動車用オルタネータ |
BR9908541-0A BR9908541A (pt) | 1998-11-30 | 1999-11-30 | Alternador de veìculo |
DE69918417T DE69918417T2 (de) | 1998-11-30 | 1999-11-30 | Rotor mit zwischenliegenden dauermagneten für wechselstromgenerator für kraftfahrzeuge |
US09/601,199 US6369486B1 (en) | 1998-11-30 | 1999-11-30 | Motor vehicle alternator rotor with interposed permanent magnets |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815033A FR2786624B1 (fr) | 1998-11-30 | 1998-11-30 | Rotor d'alternateur de vehicule a aimants permanents intercalaires |
FR98/15033 | 1998-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000033439A1 true WO2000033439A1 (fr) | 2000-06-08 |
Family
ID=9533332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/002959 WO2000033439A1 (fr) | 1998-11-30 | 1999-11-30 | Rotor d'alternateur de vehicule a aimants permanents intercalaires |
Country Status (9)
Country | Link |
---|---|
US (1) | US6369486B1 (fr) |
EP (1) | EP1060555B1 (fr) |
JP (1) | JP4328028B2 (fr) |
KR (1) | KR100709626B1 (fr) |
CN (1) | CN1183644C (fr) |
BR (1) | BR9908541A (fr) |
DE (1) | DE69918417T2 (fr) |
FR (1) | FR2786624B1 (fr) |
WO (1) | WO2000033439A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19951115A1 (de) | 1999-10-23 | 2001-05-03 | Bosch Gmbh Robert | Elektrische Maschine |
US6888271B2 (en) * | 2002-10-04 | 2005-05-03 | Visteon Global Technologies, Inc. | High power density alternator bobbin |
US6781262B2 (en) * | 2003-01-29 | 2004-08-24 | Delphi Technologies, Inc. | Generator and air deflector |
JP3975180B2 (ja) * | 2003-05-26 | 2007-09-12 | 三菱電機株式会社 | 回転電機の回転子 |
FR2866993B1 (fr) * | 2004-02-27 | 2006-04-28 | Valeo Equip Electr Moteur | Ensemble rotorique dont au moins un espace intergriffes est obture par le ventilateur |
US7038347B2 (en) * | 2004-05-03 | 2006-05-02 | Visteon Global Technologies, Inc. | Optimized alternator bobbin |
JP4410159B2 (ja) * | 2005-06-24 | 2010-02-03 | 三菱電機株式会社 | 交流回転電機 |
US7583005B2 (en) * | 2006-05-19 | 2009-09-01 | Remy International, Inc. | Electric machine rotor pole piece with anti coil rotation |
US20120245556A1 (en) * | 2009-09-01 | 2012-09-27 | University Of Virginia Patent Foundation | System, Method and Computer Program Product For Adjustment of Insulin Delivery in Diabetes Using Nominal Open-Loop Profiles |
FR2952767B1 (fr) * | 2009-11-13 | 2012-06-01 | Valeo Equip Electr Moteur | Rotor a griffes equipe d'un isolant d'un bobinage d'excitation et d'aimants et machine electrique tournante equipee d'un tel rotor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5132581A (en) * | 1990-02-26 | 1992-07-21 | Nippondenso Co., Ltd. | AC generator with annular permanent magnets |
JPH0678479A (ja) * | 1992-07-07 | 1994-03-18 | Nippondenso Co Ltd | 車両用交流発電機の回転子 |
DE19632219A1 (de) * | 1996-08-09 | 1998-02-12 | Bosch Gmbh Robert | Klauenpolgenerator |
JPH10201149A (ja) * | 1997-01-14 | 1998-07-31 | Denso Corp | ランデルコア型回転電機 |
US5793143A (en) * | 1997-08-05 | 1998-08-11 | Ford Motor Company | Rotor for an electrical machine |
DE19802786A1 (de) * | 1998-01-26 | 1999-07-29 | Bosch Gmbh Robert | Synchronmaschine, insbesondere Generator oder Motor für ein Kraftfahrzeug |
DE19802785A1 (de) * | 1998-01-26 | 1999-08-05 | Bosch Gmbh Robert | Synchronmaschine, insbesondere Generator für ein Kraftfahrzeug |
DE19806667A1 (de) * | 1998-02-18 | 1999-08-19 | Bosch Gmbh Robert | Synchronmaschine, insbesondere Generator für ein Kraftfahrzeug |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4617485A (en) * | 1983-12-19 | 1986-10-14 | Nippondenso Co., Ltd. | Rotor of alternator mounted on vehicle |
JP3446313B2 (ja) * | 1993-08-30 | 2003-09-16 | 株式会社デンソー | 回転電機の回転子 |
US5780953A (en) * | 1993-12-07 | 1998-07-14 | Nippondenso Co., Ltd. | Alternator |
JP3340259B2 (ja) * | 1994-03-23 | 2002-11-05 | 株式会社日立製作所 | 自動車用オルタネータ |
JP3767135B2 (ja) * | 1997-11-13 | 2006-04-19 | 三菱電機株式会社 | 回転電機の回転子の製造方法 |
DE29801184U1 (de) * | 1998-01-26 | 1999-05-20 | Robert Bosch Gmbh, 70469 Stuttgart | Synchronmaschine, insbesondere Generator für ein Kraftfahrzeug |
JP3913933B2 (ja) * | 1999-05-24 | 2007-05-09 | 三菱電機株式会社 | 回転電機の回転子、その磁性体の着磁方法 |
-
1998
- 1998-11-30 FR FR9815033A patent/FR2786624B1/fr not_active Expired - Fee Related
-
1999
- 1999-11-30 DE DE69918417T patent/DE69918417T2/de not_active Expired - Lifetime
- 1999-11-30 CN CNB998034924A patent/CN1183644C/zh not_active Expired - Lifetime
- 1999-11-30 EP EP99973187A patent/EP1060555B1/fr not_active Expired - Lifetime
- 1999-11-30 WO PCT/FR1999/002959 patent/WO2000033439A1/fr active IP Right Grant
- 1999-11-30 US US09/601,199 patent/US6369486B1/en not_active Expired - Lifetime
- 1999-11-30 BR BR9908541-0A patent/BR9908541A/pt not_active Application Discontinuation
- 1999-11-30 KR KR1020007008213A patent/KR100709626B1/ko not_active IP Right Cessation
- 1999-11-30 JP JP2000585977A patent/JP4328028B2/ja not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5132581A (en) * | 1990-02-26 | 1992-07-21 | Nippondenso Co., Ltd. | AC generator with annular permanent magnets |
JPH0678479A (ja) * | 1992-07-07 | 1994-03-18 | Nippondenso Co Ltd | 車両用交流発電機の回転子 |
DE19632219A1 (de) * | 1996-08-09 | 1998-02-12 | Bosch Gmbh Robert | Klauenpolgenerator |
JPH10201149A (ja) * | 1997-01-14 | 1998-07-31 | Denso Corp | ランデルコア型回転電機 |
US5969459A (en) * | 1997-01-14 | 1999-10-19 | Denso Corporation | Rotary electric machine having Lundell type core |
US5793143A (en) * | 1997-08-05 | 1998-08-11 | Ford Motor Company | Rotor for an electrical machine |
DE19802786A1 (de) * | 1998-01-26 | 1999-07-29 | Bosch Gmbh Robert | Synchronmaschine, insbesondere Generator oder Motor für ein Kraftfahrzeug |
DE19802785A1 (de) * | 1998-01-26 | 1999-08-05 | Bosch Gmbh Robert | Synchronmaschine, insbesondere Generator für ein Kraftfahrzeug |
DE19806667A1 (de) * | 1998-02-18 | 1999-08-19 | Bosch Gmbh Robert | Synchronmaschine, insbesondere Generator für ein Kraftfahrzeug |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 018, no. 332 (E - 1567) 23 June 1994 (1994-06-23) * |
Also Published As
Publication number | Publication date |
---|---|
EP1060555B1 (fr) | 2004-06-30 |
CN1183644C (zh) | 2005-01-05 |
JP4328028B2 (ja) | 2009-09-09 |
FR2786624B1 (fr) | 2001-02-16 |
US6369486B1 (en) | 2002-04-09 |
JP2002532044A (ja) | 2002-09-24 |
DE69918417T2 (de) | 2005-08-25 |
FR2786624A1 (fr) | 2000-06-02 |
KR100709626B1 (ko) | 2007-04-19 |
DE69918417D1 (de) | 2004-08-05 |
KR20010040429A (ko) | 2001-05-15 |
CN1299528A (zh) | 2001-06-13 |
BR9908541A (pt) | 2000-11-28 |
EP1060555A1 (fr) | 2000-12-20 |
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