DE3230298A1 - Power supply device for electrical machines - Google Patents

Power supply device for electrical machines

Info

Publication number
DE3230298A1
DE3230298A1 DE19823230298 DE3230298A DE3230298A1 DE 3230298 A1 DE3230298 A1 DE 3230298A1 DE 19823230298 DE19823230298 DE 19823230298 DE 3230298 A DE3230298 A DE 3230298A DE 3230298 A1 DE3230298 A1 DE 3230298A1
Authority
DE
Germany
Prior art keywords
power supply
supply device
metal
electrical machines
graphite
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.)
Ceased
Application number
DE19823230298
Other languages
German (de)
Inventor
Manfred Ing.(grad.) 7014 Kornwestheim Dreyer
Walter 7000 Stuttgart Hagenlocher
Karl Ing.(grad.) 7151 Allmersbach Kleebauer
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
Priority to DE19823230298 priority Critical patent/DE3230298A1/en
Priority claimed from IT23875/82A external-priority patent/IT1152935B/en
Publication of DE3230298A1 publication Critical patent/DE3230298A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/022—Details for dynamo electric machines characterised by the materials used, e.g. ceramics
    • H01R39/025—Conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/08—Slip-rings
    • H01R39/10—Slip-rings other than with external cylindrical contact surface, e.g. flat slip-rings

Abstract

A power supply device for electrical machines, having at least one electrically conductive slipring which is arranged on the circumferential surface or end surface of a cylindrical insulating material body or carrier body and consists of a metal/graphite mixture. <IMAGE>

Description

Stromzuführungseinrichtung für elektrische MaschinenPower supply device for electrical machines

Die Erfindung betrifft eine Stromzuführungseinrichtung für elektrische Maschinen, insbesondere zur Verwendung als Schleifring oder Kollektor, mit wenigstens einem an der Umfangs fläche oder Stirnfläche eines zylindrischen Isolierstoffkörpers angeordneten, metallisch leitenden Schleifstück, welches die Lauffläche für eine aufgesetzte Bürste bildet.The invention relates to a power supply device for electrical Machines, especially for use as a slip ring or collector, with at least one on the circumference or face of a cylindrical insulating body arranged, metallically conductive contact strip, which the running surface for a attached brush forms.

Es sind bereits Stromzuführungseinrichtungen bekannt, bei welchen eine feststehende Graphitbürste auf einem umlaufenden Graphitschleifring gleitet. Diese bekannte Anordnung hat eine sehr hohe Lebensdauer, bereitet jedoch bei der mechanischen Befestigung auf einer Weile, z.B. der Ankerwelle einer elektrischen Maschine erhebliche Schwierigkeiten, weil die für einen Graphitschleifring zulässigen Zugspannungen nur sehr niedrig liegen und demgemäß besondere Maßnahmen zur Befestigung erfordern.There are already power supply devices known in which a fixed graphite brush slides on a rotating graphite slip ring. This known arrangement has a very long service life, but prepares in the mechanical fastening on a while, e.g. the armature shaft of an electrical Machine considerable difficulties, because the permissible for a graphite slip ring Tensile stresses are only very low and accordingly special measures for fastening require.

Der Erfindung liegt die Aufgabe zugrunde, eine als Schleifring oder Kollektor ausgebildete Stromzuführungseinrichtung zu schaffen, welche eine höhere mechanische Festigkeit aufweist. Hierzu ist gemäß der Erfindung vorgesehen, daß das Schleifstück aus einer Metall/Graphit-Mischung besteht, wobei als überwiegender Anteil Metall, vorzugsweise in Form von Kupfer- oder Bronzepulver verwendet ist. In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, daß die das Schleifstück bildende Metall/Graphit-Mischung im Sinterverfahren verfestigt ist.The invention is based on the object as a slip ring or Collector-trained power supply device to create which a higher has mechanical strength. For this purpose, it is provided according to the invention that the contact strip consists of a metal / graphite mixture, the predominant being Share of metal, preferably in the form of copper or bronze powder is used. In a further embodiment of the invention it is proposed that the contact strip forming metal / graphite mixture is solidified in the sintering process.

Die Erfindung ist nachstehend anhand eines Ausführungsbeispieles, einer Doppel-Schleifring-Stromzuführungseinrichtung für die Erregerspule einer im übrigen nicht näher dargestellten Drehstromlichtmaschine erläutert.The invention is described below using an exemplary embodiment, a double slip ring power supply device for the excitation coil of an im other three-phase alternator not shown in detail.

In der Zeichnung sind zwei in geringem axialem Abstand voneinander angeordnete Schleifringe 1 und 2 wiedergegeben, die auf einer Ankerwelle 3 mit Hilfe einer aus Kunststoff-Formmasse hergestellten Nabe 4 befestigt sind.In the drawing, two are at a small axial distance from each other arranged slip rings 1 and 2 reproduced on an armature shaft 3 with the help a hub 4 made of plastic molding compound are attached.

Die Schleifringe 1 und 2 bestehen erfindungsgemäß aus einer Mischung aus Bronzepulver und Graphitpulver, wobei der Mischungsanteil des Bronzepulvers den Anteil des Graphitpulvers weit überwiegt, beispielsweise im Verhãltnis von 4:1. Die genannte Metall/Graphit-Mischung ist im Slnterverfahren verfestigt und ergibt gegenüber den bekannten Graphit-Schleifringen den Vorteil höherer mechanischer Festigkeit, welche es ermöglicht, daß bei Schleifringen ein Preßsitz auf der Isolierstoffnabe 4 möglich ist, und die zum Anschluß dienenden elektrischen Leiter durch Verstemmen mit den Schleifringen verbunden werden können. Ein weiterer Vorteil besteht in der guten Lötbarkeit für die elektrische Kontaktierung ohne zusätzlichen Aufwand wie z.B. Lötfahnen oder Kupferschichten.According to the invention, slip rings 1 and 2 consist of a mixture of bronze powder and graphite powder, the mixed proportion of the bronze powder the proportion of graphite powder far outweighs, for example in the ratio of 4: 1. The aforementioned metal / graphite mixture is solidified in the intermingling process and results in compared to the known graphite slip rings the advantage of higher mechanical strength, which makes it possible for slip rings to have a press fit on the insulating hub 4 is possible, and the electrical conductors used for connection by caulking be connected to the slip rings can. Another advantage consists in the good solderability for the electrical contact without additional Effort such as soldering lugs or copper layers.

Claims (2)

Ansprüche Stromzuführungseinrichtung für elektrische Maschinen, insbesondere zur Verwendung als Schleifring oder Kollektor, mit wenigstens einem an der Umfangsfläche oder Stirnfläche eines zylindrischen Tsolierstoff- oder Trägerkörpers angeordneten, elektrisch leitenden Schleifstück, welches die Lauffläche für eine aufgesetzte Bürste bildet, dadurch gekennzeichnet, daß das Schleifstück (1, 2) aus einer Metall/Graphit-Mischung besteht, wobei als überwiegender Anteil Metall, vorzugsweise in Form von Kupfer-oder Bronzepulver verwendet ist.Claims Power supply device for electrical machines, in particular for use as a slip ring or collector, with at least one on the circumferential surface or end face of a cylindrical insulating material or carrier body arranged, electrically conductive contact strip, which is the running surface for an attached brush forms, characterized in that the contact strip (1, 2) consists of a metal / graphite mixture consists, with the predominant proportion being metal, preferably in the form of copper or Bronze powder is used. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Metall/Graphit-Mischung im Sinterverfahren verfestigt ist.2. Device according to claim 1, characterized in that the metal / graphite mixture is solidified in the sintering process.
DE19823230298 1981-08-19 1982-08-14 Power supply device for electrical machines Ceased DE3230298A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823230298 DE3230298A1 (en) 1981-08-19 1982-08-14 Power supply device for electrical machines

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3132770 1981-08-19
DE19823230298 DE3230298A1 (en) 1981-08-19 1982-08-14 Power supply device for electrical machines
IT23875/82A IT1152935B (en) 1981-08-19 1982-10-22 DEVICE FOR THE ADDITION OF CURRENT FOR ELECTRIC MACHINES

Publications (1)

Publication Number Publication Date
DE3230298A1 true DE3230298A1 (en) 1983-03-03

Family

ID=27189501

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823230298 Ceased DE3230298A1 (en) 1981-08-19 1982-08-14 Power supply device for electrical machines

Country Status (1)

Country Link
DE (1) DE3230298A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789842A (en) * 1995-05-22 1998-08-04 Le Carbone Lorraine Alternator rings and cylindrical commutators made of a sintered copper-graphite composite material
DE10003900A1 (en) * 2000-01-29 2002-05-02 Schunk Metall & Kunststoff Slip ring construction for wind generator, comprises slip rings mounted on ventilated support rings fastened together by rods, with insulation between all components
WO2009003902A1 (en) * 2007-06-30 2009-01-08 Robert Bosch Gmbh Electrical machine
WO2016192883A1 (en) 2015-05-29 2016-12-08 Siemens Aktiengesellschaft Arrangement for guiding and/or holding electrically conductive sliding contact elements
DE102021214282A1 (en) 2021-12-14 2023-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung Electrical machine with an electrical sliding contact and method for producing one

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735871C (en) * 1940-08-02 1943-05-29 Bosch Gmbh Robert (Sintered) commutator bar made of porous metal mass
DE894738C (en) * 1942-04-03 1953-10-26 Siemens Planiawerke A G Fuer K Collector or slip ring for electrical machines and apparatus
DE961460C (en) * 1951-09-14 1957-04-04 Siemens Ag Commutator, slip ring or static contact for electrical machines and devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735871C (en) * 1940-08-02 1943-05-29 Bosch Gmbh Robert (Sintered) commutator bar made of porous metal mass
DE894738C (en) * 1942-04-03 1953-10-26 Siemens Planiawerke A G Fuer K Collector or slip ring for electrical machines and apparatus
DE961460C (en) * 1951-09-14 1957-04-04 Siemens Ag Commutator, slip ring or static contact for electrical machines and devices

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789842A (en) * 1995-05-22 1998-08-04 Le Carbone Lorraine Alternator rings and cylindrical commutators made of a sintered copper-graphite composite material
DE10003900A1 (en) * 2000-01-29 2002-05-02 Schunk Metall & Kunststoff Slip ring construction for wind generator, comprises slip rings mounted on ventilated support rings fastened together by rods, with insulation between all components
DE10003900B4 (en) * 2000-01-29 2004-02-19 Schunk Metall Und Kunststoff Gmbh Current-transfer assembly
WO2009003902A1 (en) * 2007-06-30 2009-01-08 Robert Bosch Gmbh Electrical machine
WO2016192883A1 (en) 2015-05-29 2016-12-08 Siemens Aktiengesellschaft Arrangement for guiding and/or holding electrically conductive sliding contact elements
US10439350B2 (en) 2015-05-29 2019-10-08 Siemens Aktiengesellschaft Arrangement for guiding and/or holding electrically conductive sliding contact elements
DE102021214282A1 (en) 2021-12-14 2023-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung Electrical machine with an electrical sliding contact and method for producing one

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Legal Events

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8120 Willingness to grant licences paragraph 23
8110 Request for examination paragraph 44
8131 Rejection