DE2856310B2 - Bearing arrangement for the rotor of an electrical machine, which rotor has a winding and a commutator - Google Patents
Bearing arrangement for the rotor of an electrical machine, which rotor has a winding and a commutatorInfo
- Publication number
- DE2856310B2 DE2856310B2 DE19782856310 DE2856310A DE2856310B2 DE 2856310 B2 DE2856310 B2 DE 2856310B2 DE 19782856310 DE19782856310 DE 19782856310 DE 2856310 A DE2856310 A DE 2856310A DE 2856310 B2 DE2856310 B2 DE 2856310B2
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- winding
- commutator
- bearing arrangement
- hub
- 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- Withdrawn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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Current Collectors (AREA)
- Dc Machiner (AREA)
Description
Die Erfindung betrifft eine Lageranordnung gemäß dem Oberbegriff des Patentanspruches.The invention relates to a bearing arrangement according to the preamble of the patent claim.
Eine solche Lageranordnung ist durch die US-PS 77 065 bekannt. Bei dieser Lageranordnung sind die die Lager aufnehmenden Naben axial vor dem Wickelkopf und dem Kommutator angeordnet Hierdurch wird die axiale Länge der Maschine vergrößert. Dies gilt auch für eine aus der US-PS 30 02 794 bekannte Lageranordnung einer elektrischen Maschine.Such a bearing arrangement is known from US Pat. No. 77,065. In this bearing arrangement, the the bearing-receiving hubs are arranged axially in front of the end winding and the commutator the axial length of the machine is increased. This also applies to one known from US-PS 30 02 794 Bearing arrangement of an electrical machine.
Der Erfindung liegt die Aufgabe zugrunde, eine Lageranordnung für den Läufer einer elektrischen Maschine so auszubilden, daß die axiale Baulänge der Maschine verkürzt ist.The invention is based on the object of a bearing arrangement for the rotor of an electrical Train the machine in such a way that the overall axial length of the machine is shortened.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des- Patentanspruches gelöst.According to the invention, this object is achieved by the characterizing features of the patent claim solved.
Bei einem durch das DE-GM 72 09 518 bekannten Gleichstrommotor für einen Rasenmäher ist ein Doppellager vorgesehen, das in den topfförmig ausgebildeten Rotor hineinragt Eine solche Konstruktion bringt es mit sich, daß der Kollektor des Motors relativ weit vom Lager angeordnet ist Infolge eines immer vorhandenen radialen Lagerspiels kommt es daher bei einer solchen Ausführungsform zu einem Schlagen des Kommutators. Bei hochwertigen Antriebsmotoren für Werkzeugmaschinen ist ein solches Schlagen nicht zulässig. Durch die erfindungsgemäßeIn a known from DE-GM 72 09 518 DC motor for a lawn mower is a Double bearing is provided which protrudes into the pot-shaped rotor. Such a construction it entails that the collector of the motor is arranged relatively far from the bearing as a result of one Always existing radial bearing play therefore results in such an embodiment Hitting the commutator. This is the case with high-quality drive motors for machine tools Hitting not allowed. By the invention
ίο Lösung wird der Abstand zwischen Lager und Kommutator verkürzt und damit ein Schlagen auf das Radialspiel des Lagers reduziertίο solution will be the distance between bearings and Shortened commutator and thus reduced impact on the radial play of the bearing
Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der AnmeldungsgegenstandThe subject of the application is based on an exemplary embodiment shown in the drawing
nachfolgend näher beschrieben.described in more detail below.
Mit 1 ist der mit einer Läuferwicklung 2 versehene Läufer einer elektrischen Maschine bezeichnet Auf der Welle 3 des Läufers ist ein die Kommutatorlamellen 4 tragender Isolierstoffring 5 angeordnet An dem Maschinengehäuse 6 ist ein antriebsseitiger Lagerschild 7 und ein bürstenseitiger Lagerschild 8 befestigt. Der antriebsseitige Lagerschild 7 weist eine nach innen gerichtete Nabe 9 und der bürstenseitige Lagerschild 8 eine ebenfalls nach innen gerichtete Nabe 10 auf. In den Naben 9 und 10 sind zwei Kugellager 11 und 12 zur Lagerung der Läuferwelle 3 angeordnet1 is provided with a rotor winding 2 rotor of an electric machine referred to the shaft 3 of the rotor is the commutator 4-supporting insulating ring 5 is disposed on the machine casing 6 is mounted a drive-side end plate 7, and a brush-side end shield. 8 The drive-side end shield 7 has an inwardly directed hub 9 and the brush-side end shield 8 has an inwardly directed hub 10. Two ball bearings 11 and 12 for supporting the rotor shaft 3 are arranged in the hubs 9 and 10
Der Außendurchmesser der Nabe 9 des antriebsseitigen Lagerschildes 7 ist kleiner als der Innendurchmesser des Wickelkopfes 13 der Läuferwicklung 2. Damit kann die Nabe 9 in axialer Richtung unter den Wickelkopf 13 ragen, so daß der antriebsseitige Lagerschild 7 näher an den Wickelkopf 13 heranrückt. Damit auch der bürstenseitige Lagerschild 8 näher an den Kommutator herangerückt werden kann, ist in dem Isolierstoffring 5 eine axiale Ausnehmung 14 vorgesehen, in die die Nabe 10 des bürstenseitigen Lagerschildes 8 ragt Die beiden Lagerschilde 7 und 8 können somit bis auf einen durch die Maschinenspannung vorgegebenen Sicherheitsabstand an den Wickelkopf 13 bzw. an den KommutatorThe outer diameter of the hub 9 of the drive-side end shield 7 is smaller than the inner diameter of the end winding 13 of the rotor winding 2. The hub 9 can thus be positioned under the end winding 13 in the axial direction protrude so that the drive-side end shield 7 moves closer to the end winding 13. So that too The bearing plate 8 on the brush side can be moved closer to the commutator, is in the insulating ring 5 an axial recess 14 is provided into which the hub 10 of the brush-side bearing plate 8 protrudes. The two Bearing shields 7 and 8 can thus up to a safety distance predetermined by the machine voltage to the end winding 13 or to the commutator
■to herangerückt werden. Hierdurch wird eine wesentliche Verkürzung der axialen Baulänge der Maschine erreicht.■ to be advanced. This becomes an essential Reduction of the axial length of the machine achieved.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782856310 DE2856310B2 (en) | 1978-12-27 | 1978-12-27 | Bearing arrangement for the rotor of an electrical machine, which rotor has a winding and a commutator |
| JP16022479A JPS5588543A (en) | 1978-12-27 | 1979-12-10 | Commutator motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782856310 DE2856310B2 (en) | 1978-12-27 | 1978-12-27 | Bearing arrangement for the rotor of an electrical machine, which rotor has a winding and a commutator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2856310A1 DE2856310A1 (en) | 1980-07-03 |
| DE2856310B2 true DE2856310B2 (en) | 1980-10-16 |
Family
ID=6058486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782856310 Withdrawn DE2856310B2 (en) | 1978-12-27 | 1978-12-27 | Bearing arrangement for the rotor of an electrical machine, which rotor has a winding and a commutator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5588543A (en) |
| DE (1) | DE2856310B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0111366B1 (en) * | 1982-12-09 | 1986-07-02 | Koninklijke Philips Electronics N.V. | Electric motor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4403820C2 (en) * | 1993-10-11 | 2003-01-30 | Temic Auto Electr Motors Gmbh | commutator |
| DE19602173A1 (en) * | 1996-01-23 | 1997-10-16 | Teves Gmbh Alfred | Electric motor housing e.g. for application with vehicle pneumatic brake systems |
| DE19900559C1 (en) * | 1999-01-09 | 2000-09-21 | Mannesmann Vdo Ag | Compact electric motor e.g. for vehicle power steering or engine valve adjustment, has rotor shaft provided with section having high heat conduction coefficient for dissipating heat generated by motor |
-
1978
- 1978-12-27 DE DE19782856310 patent/DE2856310B2/en not_active Withdrawn
-
1979
- 1979-12-10 JP JP16022479A patent/JPS5588543A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0111366B1 (en) * | 1982-12-09 | 1986-07-02 | Koninklijke Philips Electronics N.V. | Electric motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5588543A (en) | 1980-07-04 |
| DE2856310A1 (en) | 1980-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| 8230 | Patent withdrawn |