EP1488493A1 - Electric machine - Google Patents

Electric machine

Info

Publication number
EP1488493A1
EP1488493A1 EP02791633A EP02791633A EP1488493A1 EP 1488493 A1 EP1488493 A1 EP 1488493A1 EP 02791633 A EP02791633 A EP 02791633A EP 02791633 A EP02791633 A EP 02791633A EP 1488493 A1 EP1488493 A1 EP 1488493A1
Authority
EP
European Patent Office
Prior art keywords
sliding element
electrical machine
sleeve part
hub
machine according
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Withdrawn
Application number
EP02791633A
Other languages
German (de)
French (fr)
Inventor
Antonio Diaz Alsina
Manuel Diaz Garcia
Pedro Sanchez Carrasco
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1488493A1 publication Critical patent/EP1488493A1/en
Withdrawn legal-status Critical Current

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • 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
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H02K5/141—Means for supporting or protecting brushes or brush holders for cooperation with slip-rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/04—Hardness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Definitions

  • the electrical machine with the features of the main claim has the advantage that the metallic sliding element on the one hand has high hardness, which greatly limits the wear of the sliding element, and on the other hand, this ensures a high dimensional accuracy of the sliding element, the storage is particularly reliable and therefore particularly durable.
  • Advantageous developments of the electrical machine according to the main claim are possible through the measures listed in the subclaims.
  • a particularly high degree of dimensional accuracy has been achieved by the sliding element.
  • the sliding element is particularly easy to manufacture by having an annular shape. If the sliding element is connected to a generally tubular sleeve part, encapsulation of the slip ring space is again possible by means of this sliding element and its tubular sleeve part. The encapsulation of the slip ring space enables it to be sealed off from harmful environmental influences such as dust, moisture and moisture. According to a further embodiment it is provided that the sleeve part is connected to the slide ring by means of a connecting element arrangement. This connection element arrangement has the advantage that a reliable connection between the slide ring and the sleeve part can be represented in this way.
  • a particularly favorable and reliable connection between the sliding ring and the sleeve member is achieved by a 'n by means of snap elements executed connector assembly.
  • Another reliable method of reliably connecting the sleeve part to the slide ring is to injection-mold the plastic sleeve part onto the slide ring using a plastic injection molding process.
  • FIG. 1 shows a partially abstracted exemplary embodiment of an electrical machine in a sectional illustration
  • Figure 2 is a sectional view of an inventive
  • the electrical machine 10 has, in addition to other parts, not shown and not essential to the invention, a shaft 13 which carries an electrically active rotor 16.
  • the shaft 13 is held in a hub 22 made of a metal alloy, for example an aluminum alloy, by means of at least one bearing 19.
  • the bearing of the shaft 13 in this hub 22 is designed as a so-called floating bearing point 25.
  • This floating bearing point 25 allows an axial relative movement between the bearing 19 fastened on the shaft 13 and the hub 22.
  • a sliding element 28 is inserted and fastened in the hub between the bearing 19 and the hub 22, the sliding element being made of metal.
  • the sliding element 28 is fixed in the hub 22 by means of a press fit. It is provided that the sliding element 28 has a minimum hardness of 570 HV 10. As indicated, the hardness is measured according to Vickers hardness test method. The hardness should ideally be between 570 and 640 HV 10.
  • the sliding element 28 is designed as a ring.
  • FIG. 2 shows another embodiment of the sliding element 28;
  • the sliding element 28 initially has the ring shape already mentioned and has a rotor side R and a slip ring side S.
  • the sliding member 28 is connected with- a generally rohrför strength sleeve part 31 'that connects to the slider 28th
  • the sleeve part 31 serves to surround a sliding contact device 34 in the electrical machine 10 and thus to protect it from harmful environmental influences.
  • the sleeve part 31 is first connected to the sliding element 28 by means of a connecting element arrangement 37.
  • This connecting element arrangement 37 includes, for example, a snap connection shown in FIGS. 3a and 3b, in which the sliding element 28 and the sleeve part 31 each have snap elements 40 which interact with one another.
  • the sliding element 28 has on its slip ring side, on the one hand, an annular bead 43 and, on the other hand, thereon an annular groove 46 axially towards the rotor.
  • the sleeve part 31 initially has a radially inwardly extending ring element 49, which is adjoined axially in the direction of the slip ring side by a radially outwardly extending ring groove 52.
  • the sleeve part 31 and the sliding element 28 are consequently connectable in that the ring element 49 of the sleeve part 31 into the annular groove 46 of the sliding element 28 engages.
  • the annular bead 43 engages in the annular groove 52 of the sleeve element of the sleeve part 31.
  • the sleeve part 31 is injection molded onto a slide ring 28.
  • the sliding element 28 as already shown in FIG. 3a, has positive locking elements.
  • These positive-locking elements are, for example, the already mentioned annular groove 46 and the annular bead 43.
  • a suitable connection between the sliding element 28 and the sleeve part 31 is achieved by at least partially encapsulating these two elements.
  • the sleeve part 31 covers the sliding contact device 34 for powering the rotor 16 or ' . of the electrical machine 10 itself at least partially.
  • an opening 55 is provided on the circumference of the sleeve part 31, into which an brush holder 58 can be inserted.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Disclosed is an electric machine, especially a three-phase generator, comprising a shaft (13) which is held in at least one moveable bearing point (25) by at least one bearing (19) in a hub (22). A metal sliding element (28) is fixed on the hub-side between the bearing (19) and the hub (22).

Description

Elektrische MaschineElectrical machine
Stand der Technik.State of the art.
Aus DE 89 11 295.'4 Ul ist eine elektrische Maschine bekannt, bei der eine Welle mittels eines Loslagers in einer Nabe eines Gehäuses gelagert ist. Nabenseitig ist zwischen dem Lager und der Nabe ein Gleitelement befestigt, das einerseits bei thermisch bedingten Längenänderungen der Welle eine Gleiten des Lagers in der Nabe ermöglicht und andererseits Temperaturschwankungen und damit Spieländerungen in der Nabe ausgleicht. Nachteilig ist bei diesem Stand der Technik, dass der aus Kunststoff gefertigte Gleitring bzw. das Gleitelement gegenüber einer betriebsbedingten .Lagerbelastung im Loslager zu wenig l widerstandsfähig ist/ und somit sich das Spiel des Lagers ungewollt vergrößert, und sich somit durch die magnetischen Kräfte bedingt darüber hinaus steigert. Die Lagerbelastung wird damit über das erträgliche Maß hinaus erhöht.From DE 89 11 295. '4 Ul an electric machine is known, is mounted in a shaft by means of a movable bearing in a hub of a housing. A sliding element is fastened on the hub side between the bearing and the hub, which on the one hand enables the bearing to slide in the hub in the event of thermally induced changes in length of the shaft and on the other hand compensates for temperature fluctuations and thus play changes in the hub. A disadvantage of this prior art is that the manufactured from plastic sliding ring or the sliding member with respect to a operational .Lagerbelastung in the movable bearing is too little l resistant / and hence the play of the bearing is increased unintentionally, and thus, due to the magnetic forces about increases. The bearing load is thus increased beyond the tolerable level.
Vorteile der ErfindungAdvantages of the invention
Die elektrische Maschine mit den Merkmalen des Hauptanspruchs hat den Vorteil, dass durch das metallische Gleitelement dieses einerseits hohe Härte aufweist, wodurch die Abnutzung des Gleitelements stark eingeschränkt ist, und andererseits dadurch eine hohe Maßhaltigkeit des Gleitelements sichergestellt, die Lagerung besonders zuverlässig und dadurch besonders dauerhaft ist. Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der elektrischen Maschine nach dem Hauptanspruch möglich. Eine besonders hohe Maßhaltigkeit hat sich dabei ergeben, indem das Gleitelement eine. Mindesthärte von 570 HV 10 aufweist.The electrical machine with the features of the main claim has the advantage that the metallic sliding element on the one hand has high hardness, which greatly limits the wear of the sliding element, and on the other hand, this ensures a high dimensional accuracy of the sliding element, the storage is particularly reliable and therefore particularly durable. Advantageous developments of the electrical machine according to the main claim are possible through the measures listed in the subclaims. A particularly high degree of dimensional accuracy has been achieved by the sliding element. Has a minimum hardness of 570 HV 10.
Das Gleitelement ist besonders einfach herzustellen, indem dieses eine Ringform aufweist. Schließt sich an das Gleitelement ein mit diesem verbundenes allgemein rohrförmiges Hülsenteil an, so ist mittels dieses Gleitelements und dessen rohrförmiges Hülsenteil wiederum eine Kapselung des Schleifringraums möglich. Die Kapselung des Schleifringraums ermöglicht ein Abschließen vor schädlichen Umwelteinflüssen wie beispielsweise Staub, Feuchtigkeit und Nässe. Gemäß einer weiteren Ausgestaltung ist vorgesehen, dass- das Hülsenteil mittels einer Verbindungselementanordnung mit dem Gleitring verbunden ist. Diese Verbindungselementanordnung hat den Vorteil, dass sich so eine zuverlässige Verbindung zwischen dem Gleitring und dem Hülsenteil darstellen läßt. Eine besonders günstige bzw. zuverlässige Verbindung zwischen dem Gleitring und dem Hülsenteil wird durch eine mittels Schnappelemente'n ausgeführte Verbindungselementanordnung erreicht. Eine weitere zuverlässige Methode, das Hülsenteil mit dem Gleitring betriebssicher zu verbinden, besteht darin, das aus Kunststoff bestehende Hülsenteil an den Gleitring mittels eines Kunststoff ruckgussverfahrens anzuspritzen.The sliding element is particularly easy to manufacture by having an annular shape. If the sliding element is connected to a generally tubular sleeve part, encapsulation of the slip ring space is again possible by means of this sliding element and its tubular sleeve part. The encapsulation of the slip ring space enables it to be sealed off from harmful environmental influences such as dust, moisture and moisture. According to a further embodiment it is provided that the sleeve part is connected to the slide ring by means of a connecting element arrangement. This connection element arrangement has the advantage that a reliable connection between the slide ring and the sleeve part can be represented in this way. A particularly favorable and reliable connection between the sliding ring and the sleeve member is achieved by a 'n by means of snap elements executed connector assembly. Another reliable method of reliably connecting the sleeve part to the slide ring is to injection-mold the plastic sleeve part onto the slide ring using a plastic injection molding process.
Mit den Merkmalen des nebengeordneten Anspruchs ist es möglich, einen Gleitring zur Montage in die Nabe einer Rotationsmaschine darzustellen, wobei sich an das metallische Gleitelement ein rohrförmiges Hülsenteil anschließt.With the features of the independent claim, it is possible to represent a slide ring for mounting in the hub of a rotary machine, with the metallic sliding element connects a tubular sleeve part.
Figurencharacters
In den Figuren ist ein Ausführungsbeispiel einer erfindungsgemäßen elektrischen Maschine sowie eines erfindungsgemäßen Gleitelements dargestellt. Es zeigen:In the figures, an embodiment of an electrical machine according to the invention and a sliding element according to the invention is shown. Show it:
Figur 1 ein teilweise abstrahiertes Ausführungsbeispiel einer elektrischen Maschine in einer Schnittdarstellung,FIG. 1 shows a partially abstracted exemplary embodiment of an electrical machine in a sectional illustration,
Figur 2 eine Schnittdarstellung eines erfindungsgemäßenFigure 2 is a sectional view of an inventive
Gleitelements .Sliding element.
Beschreibungdescription
In der Figur 1 ist in einem Teilschnitt eine elektrische Maschine 10 dargestellt. Die elektrische Maschine 10 hat neben weiteren nicht dargestellten und nicht erfindungswesentlichen Teilen eine Welle 13, die einen elektrisch wirksamen Rotor 16 trägt. Die Welle 13 ist mittels zumindest eines Lagers 19 in einer Nabe 22 aus einer Metall-Legierung, beispielsweise einer Aluminium-Legierung, gehalten. Die Lagerung der Welle 13 in dieser Nabe 22 ist als sogenannte Loslagerstelle 25 ausgebildet. Diese Loslagerstelle 25 erlaubt eine axiale Relativbewegung zwischen dem auf der Welle 13 befestigten Lager 19 und der Nabe 22. In der Nabe ist zwischen dem Lager 19 und der Nabe 22 ein Gleitelement 28 eingesetzt und befestigt, wobei das Gleitelement aus Metall ist. Das Gleitelement 28 ist mittels eines Presssitzes in der Nabe 22 befestigt. Es ist vorgesehen, dass das Gleitelement 28 eine Mindesthärte von 570 HV 10 aufweist. Wie angegeben, ist die Härte gemäß dem Härteprüfverfahren von Vickers gemessen. Die Härte soll idealerweise zwischen 570 und 640 HV 10 betragen.An electrical machine 10 is shown in a partial section in FIG. The electrical machine 10 has, in addition to other parts, not shown and not essential to the invention, a shaft 13 which carries an electrically active rotor 16. The shaft 13 is held in a hub 22 made of a metal alloy, for example an aluminum alloy, by means of at least one bearing 19. The bearing of the shaft 13 in this hub 22 is designed as a so-called floating bearing point 25. This floating bearing point 25 allows an axial relative movement between the bearing 19 fastened on the shaft 13 and the hub 22. A sliding element 28 is inserted and fastened in the hub between the bearing 19 and the hub 22, the sliding element being made of metal. The sliding element 28 is fixed in the hub 22 by means of a press fit. It is provided that the sliding element 28 has a minimum hardness of 570 HV 10. As indicated, the hardness is measured according to Vickers hardness test method. The hardness should ideally be between 570 and 640 HV 10.
Um einen gleichmäßigen Sitz des Lagers 19 in der Nabe 22 zu halten, ist vorgesehen, das Gleitelement 28 als Ring auszuführen.In order to maintain a uniform fit of the bearing 19 in the hub 22, the sliding element 28 is designed as a ring.
In Figur 2 ist ein weiteres Ausführungsbeispiel des Gleitelements 28 dargestellt; Das Gleitelement 28 hat zunächst die bereits angesprochene Ringform und weist eine Rotorseite R und eine Schleifringseite S auf. Das Gleitelement 28 ist mit- einem allgemein rohrför igen Hülsenteil 31 verbunden,' dass sich an das Gleitelement 28 anschließt. Das Hülsenteil 31 dient dazu, bei der elektrischen Maschine 10 eine Gleitkontakteinrichtung 34 zu umgeben und so diese vor schädlichen Umwelteinflüssen zu schützen.FIG. 2 shows another embodiment of the sliding element 28; The sliding element 28 initially has the ring shape already mentioned and has a rotor side R and a slip ring side S. The sliding member 28 is connected with- a generally rohrför strength sleeve part 31 'that connects to the slider 28th The sleeve part 31 serves to surround a sliding contact device 34 in the electrical machine 10 and thus to protect it from harmful environmental influences.
Das Hülsenteil 31 ist zunächst mittels einer Verbindungselementanordnung 37 mit dem Gleitelement 28 verbunden. Zu dieser Verbindungselementanordnung 37 zählt beispielsweise eine in den Figuren 3a und 3b dargestellte Schnappverbindung, bei der das. Gleitelement 28 und das Hülsenteil 31 jeweils miteinander zusammenwirkende Schnappelemente 40 aufweisen. Dazu weist das Gleitelement 28 an seiner Schleifringseite einerseits einen Ringwulst 43 und anderseits daran axial in Richtung zum Rotor anschließend eine Ringnut 46 auf. Dementsprechend weist das Hülsenteil 31 an seiner dem Rotor zugewandten Seite zunächst ein sich nach radial innen erstreckendes Ringelement 49 auf, dem axial in Richtung zur Schleifringseite eine sich nach radial außen erstreckende Ringnut 52 anschließt. Das Hülsenteil 31 und das Gleitelement 28 sind demzufolge dadurch verbindbar, indem das Ringelement 49 des Hülsenteils 31 in die Ringnut 46 des Gleitelements 28 eingreift. Umgekehrt greift der Ringwulst 43 in die Ringnut 52 des Hülsenelements des Hülsenteils 31 ein. In einem weiteren Ausführungsbeispiel ist vorgesehen, dass das Hülsenteil 31 an einen Gleitring 28 angespritzt ist.The sleeve part 31 is first connected to the sliding element 28 by means of a connecting element arrangement 37. This connecting element arrangement 37 includes, for example, a snap connection shown in FIGS. 3a and 3b, in which the sliding element 28 and the sleeve part 31 each have snap elements 40 which interact with one another. For this purpose, the sliding element 28 has on its slip ring side, on the one hand, an annular bead 43 and, on the other hand, thereon an annular groove 46 axially towards the rotor. Accordingly, on its side facing the rotor, the sleeve part 31 initially has a radially inwardly extending ring element 49, which is adjoined axially in the direction of the slip ring side by a radially outwardly extending ring groove 52. The sleeve part 31 and the sliding element 28 are consequently connectable in that the ring element 49 of the sleeve part 31 into the annular groove 46 of the sliding element 28 engages. Conversely, the annular bead 43 engages in the annular groove 52 of the sleeve element of the sleeve part 31. In a further exemplary embodiment it is provided that the sleeve part 31 is injection molded onto a slide ring 28.
Dazu ist vorgesehen, dass das Gleitelement 28 wie bereits in Fig. 3a dargestellt, Formschlusselemente aufweist. Diese Formschlusselemente sind beispielsweise die bereits erwähnte Ringnut 46 und der Ringwulst 43. Durch zumindest teilweises Umspritzen dieser beiden Elemente wird eine geeignete Verbindung zwischen dem Gleitelement 28 und dem Hülsenteil 31 erreicht.For this purpose, it is provided that the sliding element 28, as already shown in FIG. 3a, has positive locking elements. These positive-locking elements are, for example, the already mentioned annular groove 46 and the annular bead 43. A suitable connection between the sliding element 28 and the sleeve part 31 is achieved by at least partially encapsulating these two elements.
Wie in Figur 1 dargestellt ist, deckt das Hülsenteil 31 die Gleitkontakteinrichtung 34 zur Stromversorgung des Rotors 16 bzw'. der elektrischen Maschine 10 an sich zumindest teilweise ab. Im Bereich der Gleitkontakteinrichtung 34 ist am Umfang des Hülsenteils 31 eine Öffnung 55 vorgesehen, in die ein Bürstenhalter 58 einsetzbar ist. As shown in Figure 1, the sleeve part 31 covers the sliding contact device 34 for powering the rotor 16 or ' . of the electrical machine 10 itself at least partially. In the area of the sliding contact device 34, an opening 55 is provided on the circumference of the sleeve part 31, into which an brush holder 58 can be inserted.

Claims

Ansprüche Expectations
1.. Elektrische Maschine, insbesondere1 .. Electrical machine, in particular
Drehstromgenerator, mit einer Welle (13), die an zumindest einer Loslagerstelle (25) mittels zumindest eines LagersThree-phase generator, with a shaft (13) which is connected to at least one floating bearing point (25) by means of at least one bearing
(19) in einer Nabe (22) gehalten ist, wobei nabenseitig zwischen dem Lager (19) und der Nabe (22) ein Gleitelement(19) is held in a hub (22), with a sliding element on the hub side between the bearing (19) and the hub (22)
(28) befestigt ist, dadurch gekennzeichnet, dass das Gleitelement (28) aus Metall ist.(28) is fastened, characterized in that the sliding element (28) is made of metal.
2. Elektrische Maschine nach Anspruch 1, dadurch gekennzeichnet, dass das Gleitelement (28) eine Mindesthärte von 570 HV 10 aufweist.2. Electrical machine according to claim 1, characterized in that the sliding element (28) has a minimum hardness of 570 HV 10.
3. Elektrische Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gleitelement3. Electrical machine according to one of the preceding claims, characterized in that the sliding element
(28) ein Ring ist.(28) is a ring.
4. Elektrische Maschinen nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich an das Gleitelement (28) ein mit diesem verbundenes allgemein rohrförmiges Hülsenteil (31) anschließt. 4. Electrical machine according to one of the preceding claims, characterized in that the sliding element (28) is connected to a generally tubular sleeve part (31) connected thereto.
5. Elektrische Maschine nach Anspruch 4, dadurch gekennzeichnet, dass das Hülsenteil mittels einer Verbindungselementanordnung (37) mit dem Gleitelement (28) verbunden ist.5. Electrical machine according to claim 4, characterized in that the sleeve part is connected by means of a connecting element arrangement (37) to the sliding element (28).
6. Elektrische Maschine nach Anspruch 5, dadurch gekennzeichnet, dass die Verbindungselementanordnung (37) aus Schnappelementen (40) besteht.6. Electrical machine according to claim 5, characterized in that the connecting element arrangement (37) consists of snap elements (40).
7. Elektrische Maschine nach Anspruch 4, dadurch gekennzeichnet, dass das Hülsenteil (31) an das Gleitelement (28) angespritzt ist.7. Electrical machine according to claim 4, characterized in that the sleeve part (31) is molded onto the sliding element (28).
8. Elektrische Maschine nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass das Hülsenteil (31) eine Gleitkontakteinri.chtung (34) zumindest teilweise abdeckt und im Bereich der Gleitkontakteinrichtung (34) eine Öffnung (55) ist, in die ein Bürstenhalter einsetzbar ist.8. Electrical machine according to one of claims 4 to 7, characterized in that the sleeve part (31) at least partially covers a sliding contact device (34) and in the region of the sliding contact device (34) is an opening (55) into which a brush holder can be used.
9. ' Gleitelement zur Montage in die Nabe (22) einer elektrischen Maschine (10) , dadurch gekennzeichnet, dass das Gleitelement (28) metallisch ist.9. ' sliding element for mounting in the hub (22) of an electrical machine (10), characterized in that the sliding element (28) is metallic.
10. Gleitelement nach Anspruch 9, dadurch gekennzeichnet, dass sich an das Gleitelement (28) 'ein rohrförmiges Hülsenteil (31) anschließt. 10. Sliding element according to claim 9, characterized in that a tubular sleeve part (31) adjoins the sliding element (28) ' .
EP02791633A 2002-03-19 2002-12-17 Electric machine Withdrawn EP1488493A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10212074 2002-03-19
DE10212074A DE10212074A1 (en) 2002-03-19 2002-03-19 Electrical machine
PCT/DE2002/004605 WO2003079517A1 (en) 2002-03-19 2002-12-17 Electric machine

Publications (1)

Publication Number Publication Date
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EP02791633A Withdrawn EP1488493A1 (en) 2002-03-19 2002-12-17 Electric machine

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US (1) US20050265643A1 (en)
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BR (1) BR0209867A (en)
DE (1) DE10212074A1 (en)
WO (1) WO2003079517A1 (en)

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US20080258538A1 (en) * 2007-04-18 2008-10-23 Shu-Tzu Tsai Tu Pull-type bicycle hub that can eliminate a stress
DE102008041650A1 (en) * 2008-08-28 2010-03-04 Robert Bosch Gmbh Electric machine
JP2012141044A (en) * 2011-01-06 2012-07-26 Honda Motor Co Ltd Crankshaft support structure
FR3108955B1 (en) 2020-04-03 2023-07-28 Skf Svenska Kullagerfab Ab Combined assembly of an insulator and a conductor for fixed conductor bearings
IT202000007051A1 (en) * 2020-04-03 2021-10-03 Skf Ab Combined Insulator and Conductor Assembly for Bearings with Encased Insulator
IT202000007054A1 (en) 2020-04-03 2021-10-03 Skf Ab Combined Insulator and Conductor Assembly for Bearings with Adjustable Conductor
IT202000012145A1 (en) 2020-05-25 2021-11-25 Skf Ab COMBINED INSULATOR AND CONDUCTOR ASSEMBLY FOR CLIP-MOUNTED CONDUCTOR BEARINGS
IT202000012151A1 (en) 2020-05-25 2021-11-25 Skf Ab COMBINED INSULATOR AND CONDUCTOR ASSEMBLY FOR PRONG-CLAMPED CONDUCTOR BEARINGS

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US20050265643A1 (en) 2005-12-01
DE10212074A1 (en) 2003-10-16
WO2003079517A1 (en) 2003-09-25
BR0209867A (en) 2004-06-08

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