DE3719197A1 - Rotor for electrical machines - Google Patents
Rotor for electrical machinesInfo
- Publication number
- DE3719197A1 DE3719197A1 DE19873719197 DE3719197A DE3719197A1 DE 3719197 A1 DE3719197 A1 DE 3719197A1 DE 19873719197 DE19873719197 DE 19873719197 DE 3719197 A DE3719197 A DE 3719197A DE 3719197 A1 DE3719197 A1 DE 3719197A1
- Authority
- DE
- Germany
- Prior art keywords
- permanent magnets
- bandage
- rotor
- support body
- electrical machines
- 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.)
- Withdrawn
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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
- H02K1/2781—Magnets shaped to vary the mechanical air gap between the magnets and the stator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
Die Erfindung betrifft einen Rotor für elektrische Maschinen, bestehend aus einem Tragkörper, auf dessen Außenumfangsfläche mindestens zwei Dauermagnete, paarweise jeweils diametral gegenüberliegend, in Umfangs richtung abstandsweise befestigt sind.The invention relates to a rotor for electrical machines from a supporting body, on the outer peripheral surface of which at least two Permanent magnets, in pairs diametrically opposite, in circumference direction are fixed at intervals.
Die Oberflächen der auf dem Tragkörper aufgesetzten und z. B. durch Kleben befestigten Dauermagnete weisen gekrümmte auf einer gemein samen rohrförmigen Hüllfläche liegende Oberflächen auf. Um zu vermeiden, daß sich die Dauermagnete oder Teile der Dauermagnete bei den z. T. sehr großen Umdrehungszahlen der Rotoren aufgrund der dabei auftretenden Zentripedalkräfte vom Tragkörper lösen, ist es erforderlich, daß die Dauermagnete gegen dieses unbeabsichtigte Lösen dauerhaft mit dem Tragkörper verbunden werden.The surfaces of the placed on the support body and z. B. by Adhesive-attached permanent magnets have curved on a common surfaces lying on the tubular tubular surface. In order to avoid, that the permanent magnets or parts of the permanent magnets in the z. T. very large rotations of the rotors due to the occurring Loosen centripetal forces from the supporting body, it is necessary that the Permanent magnets against this unintentional loosening permanently with the Support body are connected.
Hierzu wird bei einem Rotor der gattungsgemäßen Art erfindungsgemäß vorgeschlagen, daß die Dauermagnete mittels einer endlosen plastisch oder elastisch verformbaren über ihren Außenumfang gezogenen Bandage, welche dann die Form eines Polygonzugs P geringerer Länge als die des Hüllkreises H der Dauermagnete annimmt, auf dem Tragkörper befestigt sind. Durch die Bandage werden die Dauermagnete auch geschützt.For this purpose, it is proposed according to the invention in a rotor of the generic type that the permanent magnets are fastened to the supporting body by means of an endless plastically or elastically deformable bandage drawn over their outer circumference, which then takes the form of a polygonal path P of less length than that of the enveloping circle H of the permanent magnets . The permanent magnets are also protected by the bandage.
In bevorzugter Ausgestaltung des erfindungsgemäßen Rotors kann der freie Raum zwischen den Magneten unterhalb der Bandage mit Kunststoff ausgefüllt sein.In a preferred embodiment of the rotor according to the invention, the free space between the magnets below the bandage with plastic to be filled out.
Die Bandage kann vorzugsweise aus Aluminium, Edelstahl oder einem anderen Metall oder aber auch aus einem geeigneten elastischen Kunststoff oder Gummi bestehen. Ursprünglich besteht die Bandage aus einem Rohr, dessen Durch messer kleiner ist als der der rohrförmigen Hüllfläche, auf der die Oberflächen der Dauermagnete liegen. Beim Aufziehen der rohrförmigen Bandage verformt sich diese unter plastischer Verformung zu dem Polygonzug P, wie er sich im Querschnitt des rohrförmigen Bandagen- Gebildes ergibt. Dabei wechseln in Umfangsrichtung Rohrsegmentabschnitte mit ebenen Flächenabschnitten ab. The bandage can preferably consist of aluminum, stainless steel or another metal or else of a suitable elastic plastic or rubber. The bandage originally consists of a tube whose diameter is smaller than that of the tubular envelope surface on which the surfaces of the permanent magnets lie. When the tubular bandage is pulled on, it deforms with plastic deformation to form the polygon P , as is obtained in the cross section of the tubular bandage structure. Here, pipe segment sections alternate with flat surface sections in the circumferential direction.
In Fig. 1 ist ein Ausführungsbeispiel des erfindungsgemäßen Rotors im Querschnitt dargestellt.In Fig. 1 an embodiment of the rotor according to the invention is shown in cross section.
Auf dem Tragkörper 1 sind zwei verschiedene Magnetsegment-Typen 2 und 2 a dargestellt. Dabei wird immer entweder nur die eine oder die andere Type auf einem Tragkörper 1 angebracht sein. Die Dauermagnete 2, 2 a sind einmal durch Kleben mit dem Tragkörper 1 verbunden. Außerdem ist aber die Bandage 3 in axialer Richtung des Rotors aufgezogen, die im aufge zogenen Zustand, im Querschnitt gesehen, die Form des Polygonzugs P annimmt. Im Bereich der Überdeckung der Polfläche der Dauermagnete 2, 2 a ergeben sich runde Abschnitte und zwischen den Dauermagneten gerade bzw. ebene Abschnitte der Bandage 3. Die Länge des Polygonzugs P ist kürzer als der Hüllkreis H, auf dem die Polflächen der Magnete 2, 2 a liegen.On the support body 1 , two different types of magnetic segments 2 and 2 a are shown. Either only one or the other type will always be attached to a support body 1 . The permanent magnets 2, 2 a are connected to the support body 1 once by gluing. In addition, however, the bandage 3 is pulled in the axial direction of the rotor, which, when viewed in cross section, assumes the shape of the polygon P in the drawn-up state. In the area of the overlap of the pole surface of the permanent magnets 2, 2 a there are round sections and between the permanent magnets straight or flat sections of the bandage 3 . The length of the polygon P is shorter than the enveloping circle H on which the pole faces of the magnets 2, 2 a lie.
Der Zwischenraum zwischen den Dauermagneten 2, 2 a in Umfangsrichtung unterhalb der Bandage 3 ist mit Kunststoff 4 ausgefüllt.The space between the permanent magnets 2, 2 a in the circumferential direction below the bandage 3 is filled with plastic 4 .
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873719197 DE3719197A1 (en) | 1987-06-09 | 1987-06-09 | Rotor for electrical machines |
| DE8804992U DE8804992U1 (en) | 1987-06-09 | 1988-04-15 | Rotor for electrical machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873719197 DE3719197A1 (en) | 1987-06-09 | 1987-06-09 | Rotor for electrical machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3719197A1 true DE3719197A1 (en) | 1989-01-05 |
Family
ID=6329318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19873719197 Withdrawn DE3719197A1 (en) | 1987-06-09 | 1987-06-09 | Rotor for electrical machines |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3719197A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001010001A3 (en) * | 1999-08-03 | 2001-05-17 | Siemens Ag | Demagnetization-protected permanent magnet ship propulsion system |
| DE10254286A1 (en) * | 2002-11-20 | 2004-07-08 | Miele & Cie. Kg | Manufacture of rotor for external-rotor synchronous motor, e.g. for washing machine, involves fixing permanent magnets or magnetizable material in flux guide by casting compound within housing |
| 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 |
| DE4111411B4 (en) * | 1991-04-09 | 2006-09-14 | Papst Licensing Gmbh & Co. Kg | Rotor with a protective jacket |
| DE102007016771A1 (en) * | 2007-04-04 | 2008-10-23 | Esw Gmbh | Arrangement for mounting magnets on rotors of permanently excited synchronous machines |
| DE102009043224A1 (en) * | 2009-09-28 | 2011-03-31 | Siemens Aktiengesellschaft | Electric machine and rotor for an electric machine |
| DE102013107526A1 (en) | 2013-07-16 | 2015-01-22 | Miele & Cie. Kg | Rotor for an electric motor and method of manufacturing a rotor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2532049A1 (en) * | 1974-07-19 | 1976-02-05 | Cem Comp Electro Mec | INDUCTOR FOR A ROTATING ELECTRIC MACHINE WITH SEVERAL MAGNETS |
| DE8117076U1 (en) * | 1981-06-10 | 1982-11-25 | Robert Bosch Gmbh, 7000 Stuttgart | ROTOR FOR A PERMANENTLY MAGNETICALLY EXCITED ELECTRICAL MACHINE |
-
1987
- 1987-06-09 DE DE19873719197 patent/DE3719197A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2532049A1 (en) * | 1974-07-19 | 1976-02-05 | Cem Comp Electro Mec | INDUCTOR FOR A ROTATING ELECTRIC MACHINE WITH SEVERAL MAGNETS |
| DE8117076U1 (en) * | 1981-06-10 | 1982-11-25 | Robert Bosch Gmbh, 7000 Stuttgart | ROTOR FOR A PERMANENTLY MAGNETICALLY EXCITED ELECTRICAL MACHINE |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111411B4 (en) * | 1991-04-09 | 2006-09-14 | Papst Licensing Gmbh & Co. Kg | Rotor with a protective jacket |
| WO2001010001A3 (en) * | 1999-08-03 | 2001-05-17 | Siemens Ag | Demagnetization-protected permanent magnet ship propulsion system |
| DE10254286A1 (en) * | 2002-11-20 | 2004-07-08 | Miele & Cie. Kg | Manufacture of rotor for external-rotor synchronous motor, e.g. for washing machine, involves fixing permanent magnets or magnetizable material in flux guide by casting compound within housing |
| DE10254286B4 (en) * | 2002-11-20 | 2007-06-28 | Miele & Cie. Kg | Method for producing a rotor designed as an external rotor for a permanent magnet synchronous motor |
| 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 |
| DE102007016771A1 (en) * | 2007-04-04 | 2008-10-23 | Esw Gmbh | Arrangement for mounting magnets on rotors of permanently excited synchronous machines |
| DE102007016771B4 (en) * | 2007-04-04 | 2009-02-12 | Esw Gmbh | Arrangement for mounting magnets on rotors of permanently excited synchronous machines |
| DE102009043224A1 (en) * | 2009-09-28 | 2011-03-31 | Siemens Aktiengesellschaft | Electric machine and rotor for an electric machine |
| DE102013107526A1 (en) | 2013-07-16 | 2015-01-22 | Miele & Cie. Kg | Rotor for an electric motor and method of manufacturing a rotor |
| EP2840679A2 (en) | 2013-07-16 | 2015-02-25 | Miele & Cie. KG | Rotor for an electric motor and method for manufacturing a rotor for an electric motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8139 | Disposal/non-payment of the annual fee |