EP1524738A1 - Isolating brush guide - Google Patents

Isolating brush guide Download PDF

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Publication number
EP1524738A1
EP1524738A1 EP04022219A EP04022219A EP1524738A1 EP 1524738 A1 EP1524738 A1 EP 1524738A1 EP 04022219 A EP04022219 A EP 04022219A EP 04022219 A EP04022219 A EP 04022219A EP 1524738 A1 EP1524738 A1 EP 1524738A1
Authority
EP
European Patent Office
Prior art keywords
carbon brush
brush guide
guide
layer
power transmission
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.)
Granted
Application number
EP04022219A
Other languages
German (de)
French (fr)
Other versions
EP1524738B1 (en
Inventor
Dietmar Berghänel
Rainer Schach
Jörg SKRIPPEK
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1524738A1 publication Critical patent/EP1524738A1/en
Application granted granted Critical
Publication of EP1524738B1 publication Critical patent/EP1524738B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01R39/38—Brush holders
    • H01R39/40—Brush holders enabling brush movement within holder during current collection
    • 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
    • H01R39/38—Brush holders
    • H01R39/388—Brush holders characterised by the material of the brush holder
    • 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
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres

Definitions

  • the invention relates to a carbon brush guide for a power transmission unit a dynamo-electric machine, in particular for an electric motor, wherein the power transmission unit at least one carbon brush, in particular is designed as a multilayer carbon brush, and a carbon brush guide Metal consists of at least the carbon brush side has an insulating layer.
  • From DE 101 57 604 A1 is a carbon brush guide of an electric motor known, consisting of a tinned with an insulating layer Steel sheet exists and which is particularly suitable for a multilayer coal.
  • the insulation layer applied in the carbon brush guide serves to avoid it a short-circuit current or cross-flow between the individual Layers of multilayer carbon brush.
  • insulation layer is a paint like Phenol resin, epoxy resin or polystyrene paint on the carbon brushed steel sheet applied. When using such isolation between the Carbon brush guide and the multi-layer carbon brush, the gap be tolerated closely.
  • the disadvantage of such insulation is that the insulation layer thermally and mechanically can not be stressed as much as a pure metal guide.
  • carbon brush guides are known from the prior art, the usually consist of brass sheet and have no insulation layer. Large gaps must be between such an electrically conductive carbon brush guide and a multi-layer carbon brush to allow the multilayer carbon brush As a rule, only with a maximum of one carbon layer, the carbon brush guide touched.
  • the carbon brushes within the carbon brush guide can tilt so that at least two different layers of carbon brush with the guide come in line contact. This results in short-circuit currents in this position which leads to excessive heating of motor windings and collector and lead to increased brush wear.
  • the carbon brush runs in this tilting position over a brush edge, which still unnecessary brush noise is produced.
  • the invention is therefore the object of a carbon brush guide of the type mentioned insulation between a carbon brush and their To provide leadership that is thermally and mechanically strong load, and that the carbon brush guide is economical to manufacture. It should on the one hand the Carbon brush guide be designed so that when the intended Use in a dynamo-electric machine no unnecessary brush noise arise and on the other hand, the carbon brush the smallest possible Wear has.
  • the carbon brush guide Aluminum form since aluminum has very good thermo-electrical properties having.
  • the aluminum forms anodising non-conductive very thin oxide layer. This alumina layer or
  • Eloxal Anlagen usually has a thickness of 5 microns to 30 microns and is still there extremely durable and thermally and mechanically resistant. additionally advantageously remain the good thermal properties of aluminum receive.
  • the anodized layer advantageously in a dark color, preferably in black.
  • the power transmission unit consisting of the carbon brush guide and the Carbon brush can also have a holder for holding the carbon brush guide include.
  • This holder is generally made of plastic. So that Heat in such a power transmission unit of the carbon brush guide can be dissipated again, this carbon brush is advantageously not completely surrounded by the plastic holder. So the heat can over the reassigning outer surfaces of carbon brush guide radiated again become.
  • the carbon brush and / or the carbon brush guide is designed so that the carbon brush and the carbon brush guide are in the crack areas of the Can not touch the anodizing layer. This results in a formation of short-circuit currents, especially between the layers of a multilayer carbon brush, safely prevented.
  • the carbon brush at its longitudinal edges with a chamfer be provided so as to provide the required distance to the crack areas of Eloxal Anlagen the carbon brush guide produce.
  • the carbon brush guide 5 is a power transmission unit intended for a washing machine electric motor.
  • This washing machine electric motor is preferably a universal motor.
  • the universal motor (not shown) includes, among other things, a stator, a rotor, a Commutator, two bearing plates and the power transmission unit, which in the essentially from the carbon brush guide 5, the carbon brush 1 and the holder. 8 consists.
  • the rotor and the stator are each packed with iron and corresponding Provided windings for generating magnetic fields.
  • the commutator is mechanically connected to the rotor shaft and electrically connected to the rotor windings.
  • the stator is mechanically attached to the bearing plates, which are also used for Serve recording and storage of the rotor shaft. At one of the bearing signs is among other things, the holder 8 of the power transmission unit attached.
  • the carbon brushes are designed as multi-layer carbon brushes to a better To achieve commutation.
  • 1 shows a two-layer carbon brush 1, consisting of two interconnected by means of a non-conductive compound 3 conductive carbon halves 2, 4 consists.
  • the one end face of the carbon brush 1 is on the commutator, creating a conductive connection between a Commutator blade and the carbon brush is formed, and the other end of the Carbon brush 1 is contacted with a Stromzhoummungslitze, whereby the two Coal halves 2 and 4 are electrically connected to each other at the contact point.
  • the carbon brush guide 5 is shown purely schematically in FIG. In the present Embodiment, this carbon brush guide 5 is made of an aluminum sheet executed, which is anodized on both sides. Thus, the carbon brush guide 5 equipped on both sides with a non-conductive aluminum oxide or Eloxal Anlagen 6, 7.
  • the carbon brush 1 facing layer 6 causes the two Coal halves 2 and 4 in a possible touch of the carbon brush guide 5 not be short-circuited. Such a contact occurs in particular, when the carbon brush 1 tilts slightly in operation in the carbon brush guide 5.
  • the Insulating layer 6 avoids a short circuit between the carbon halves 2 and 4. As a result, the coal halves 2, 4 are always energized evenly. Such Energizing the coal halves 2, 4 leads to a uniform and low Brush wear.
  • the outer wall of the carbon brush guide is also 5 equipped with a non-conductive anodized 7. This will be possible leakage currents between the conductive end shield and the carbon brush guide 5 avoided. This is especially important if the holder 8 due to its shape is not sufficient distance between the End shield and the carbon brush guide 5 can ensure.
  • the carbon brush guide 6 directly to the Bearing shield mounted because the outer anodized layer 7 is sufficiently insulating.
  • the power transmission unit can be made even cheaper be because the holder 8 of the carbon brush guide 5 can be dispensed with.
  • the anodized layer 6, 7 is in a thickness of 15 microns on the carbon brush guide. 5 applied. But other layer thicknesses between 5 and 30 microns are possible. Such anodized layers 6, 7 are sufficiently insulating and very wear-resistant and resistant to climatic and chemical influences. Because the thickness of the Eloxal Anlagen 6 is very uniform and a touch of the carbon brush 1 with the carbon brush guide 5 due to the non-conductive anodized layer 6 is possible, the guide gap (clearance) between carbon brush 1 and carbon brush guide 5 are tolerated very tightly. A transverse game according to DIN 43008 between the carbon brush 1 and the carbon brush guide 5 is in Present embodiment readily complied with and tilting the Carbon brush 1 in the carbon brush guide 5 is thus avoided. By a Such precise guidance of the carbon brush 1 is excluded that a Carbon brush edge over a commutator blade runs and thus a corresponding Brush noise generated.
  • the anodizing layer 6 of the carbon brush guide 5 is on the carbon brushes. 1 facing surface executed in a black color.
  • Such a coloring the Eloxal Mrs 6 is in an anodization by a suitable choice of Production parameters easily achievable. There are others, too dark, colors conceivable that can absorb heat radiation well. By this special coloring is achieved that in the area of the carbon brush 1 resulting heat, which is the contact point between carbon brush 1 and commutator and radiate the carbon brush 1 in the form of heat radiation, from the Eloxal layer 6 is well absorbed.
  • the heat absorbed by the anodizing layer 6 is transferred to the aluminum carbon brush guide 5 and turn away at the carbon brushes 1 Side again radiated.
  • the holder 8 of the carbon brush guide 5 is designed so that the carbon brush guide 5 is not completely enclosed by the holder 8.
  • the free outside Surfaces of the carbon brush guide 5 then radiate heat to the Environment.
  • the heat radiation or the heat release of the exposed Surfaces of the carbon brush guide is additionally favored when the carbon brush guide is arranged in an air flow generated by the engine itself. This air flow is through a suitable design of the bearing plates and / or of the stator influenced.
  • the no holder. 8 contains the carbon brush guide 5 in direct contact with the bearing plate on Bearing shield of the engine attached.
  • the heat dissipation of the area the carbon brush 1 additionally favors, since the of the carbon brush guide 5 absorbed heat is delivered directly to the bearing plate.
  • Such direct attachment of the carbon brush guide 5 on the bearing plate is determined by the non-conductive outer Eloxal Mrs 7 allows.
  • an aluminum sheet For the advantageous production of the carbon brush guide 5 according to the invention anodized in an initial manufacturing step an aluminum sheet. Out of such Anodized aluminum sheet is a semi-finished product in a second production step made for the carbon brush guide 5. In the present embodiment is The semi-finished stamped from the anodized aluminum sheet, but also other suitable methods are conceivable. This semi-finished product is then in a third Production step to the carbon brush guide 5 bent. In a one-sided Anodized aluminum sheet, the bending process is designed so that the anodized layer 6 lies inside, so in the guide region of the carbon brush. 1
  • an anodized layer may crack in the bending area. Such cracks can reduce the insulating effect of the anodizing layer 6 with respect to the carbon brush 1 in the bending region.
  • 2 shows a favorable design possibility of a carbon brush guide 10, in which each deformation region of the carbon brush guide begins and ends with a convex curvature 11, that is, a curvature 11 facing away from the carbon brush 12. This ensures that the carbon brush 12 does not move when displaced curved surfaces of the carbon brush guide 10 can touch. Thus, a contact of the carbon brush 12 is excluded with the areas that may have possible cracks in the anodized layer 6. Over time, the exposed areas of aluminum within the cracks by the oxygen in the air automatically become an insulating layer of Al 2 O 3 again .
  • An alternative power transmission unit includes a special design of the Carbon brush 1, wherein the longitudinal edges of the carbon brush 1 each have a chamfer. 9 have, as shown in Fig. 1. Also in this version will ensures that the carbon brush does not reach the bending areas when relocating the carbon brush guide 5 can touch.
  • the present invention is not limited to the use of multilayer carbon brushes limited, but it can also be applied for block carbon brushes become.
  • the same embodiment of the carbon brush guide for both carbon brush types or for AC and DC motors be used.

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  • Motor Or Generator Current Collectors (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Fishing Rods (AREA)

Abstract

The carbon brush guide (5) is made of aluminium which is covered with an insulating aluminium oxide layer (6,7) at least on the side facing the multi-layer carbon brush (1), e.g. an artificially produced eloxal layer with a thickness of between 5 and 30 microns, used for absorption of heat radiation. Also included are Independent claims for the following: (A) a current transfer device with a carbon brush guide; (B) a carbon brush for a current transfer device; (C) a dynamoelectric machine; (D) a manufacturing method for a carbon brush guide.

Description

Die Erfindung betrifft eine Kohlebürstenführung für eine Stromübertragungseinheit einer dynamo-elektrischen Maschine, insbesondere für einen Elektromotor, wobei die Stromübertragungseinheit mindestens aus einer Kohlebürste, die insbesondere als Mehrschichtkohlebürste ausgeführt ist, und einer Kohlebürstenführung aus Metall besteht, die mindestens kohlebürstenseitig eine isolierende Schicht aufweist.The invention relates to a carbon brush guide for a power transmission unit a dynamo-electric machine, in particular for an electric motor, wherein the power transmission unit at least one carbon brush, in particular is designed as a multilayer carbon brush, and a carbon brush guide Metal consists of at least the carbon brush side has an insulating layer.

Aus der DE 101 57 604 A1 ist eine Kohlebürstenführung eines Elektromotors bekannt, die aus einem mit einer Isolationsschicht überzogenen verzinnten Stahlblech besteht und die insbesondere für eine Mehrschichtkohle geeignet ist. Die in der Kohlebürstenführung aufgebrachte Isolationsschicht dient zur Vermeidung eines Kurzschlussstromes bzw. Querstromes zwischen den einzelnen Schichten der Mehrschichtkohlebürste. Als Isolationsschicht wird ein Lack wie Phenolharz-, Epoxidharz- oder Polystyrollack auf das Stahlblech der Kohlebürstenführung aufgebracht. Bei der Verwendung einer solchen Isolation zwischen der Kohlebürstenführung und der Mehrschichtkohlebürste kann der Zwischenraum eng toleriert werden. Nachteilig ist bei einer solchen Isolierung, dass die Isolationsschicht thermisch und mechanisch nicht so stark belastet werden kann, wie eine reine Metallführung.From DE 101 57 604 A1 is a carbon brush guide of an electric motor known, consisting of a tinned with an insulating layer Steel sheet exists and which is particularly suitable for a multilayer coal. The insulation layer applied in the carbon brush guide serves to avoid it a short-circuit current or cross-flow between the individual Layers of multilayer carbon brush. As insulation layer is a paint like Phenol resin, epoxy resin or polystyrene paint on the carbon brushed steel sheet applied. When using such isolation between the Carbon brush guide and the multi-layer carbon brush, the gap be tolerated closely. The disadvantage of such insulation is that the insulation layer thermally and mechanically can not be stressed as much as a pure metal guide.

Bei einem aus EP 0 358 812 A1 bekannten Metallbürstenköcher, also einer Metallbürstenführung, für eine Mehrschichtkohlebürste werden die Führungswände des Bürstenköchers mit einer Isolationsschicht aus Polytetrafluoräthylen beschichtet. Um eine hinreichende mechanische Haftung und Beständigkeit der Isolationsschicht zu erzielen, muss der Bürstenköcher aufwendig vorbehandelt und die Isolationsschicht muss relativ dick ausgeführt werden. Die Herstellungskosten werden durch eine solche Ausführungsart des Metallbürstenköchers gegenüber üblichen Bürstenköcher deutlich verteuert. Außerdem können die Spalte zwischen der Kohlebürstenführung und der Kohlebürste nicht so eng toleriert werden, da die Schichtdicke einer solchen Isolation selbst relativ große Dickenunterschiede aufweist.In a metal brush holder known from EP 0 358 812 A1, that is to say one Metal brush guide, for a multi-layer carbon brush are the guide walls of the brush holder with an insulating layer of polytetrafluoroethylene coated. To ensure adequate mechanical adhesion and durability of To achieve insulation layer, the brush quiver has been pretreated consuming and the insulation layer must be made relatively thick. The manufacturing costs be by such an embodiment of the metal brush holder Compared to usual brush quiver much more expensive. In addition, the Column between the carbon brush guide and the carbon brush not so tight be tolerated, since the layer thickness of such insulation itself is relatively large Has thickness differences.

Ferner sind aus dem Stand der Technik auch Kohlebürstenführungen bekannt, die üblicherweise aus Messingblech bestehen und keine Isolationsschicht aufweisen. Große Spalte müssen zwischen einer solchen elektrisch leitenden Kohlebürstenführung und einer Mehrschichtkohlebürste vorhanden sein, damit die Mehrschichtkohlebürste im Regelfall nur mit maximal einer Kohleschicht die Kohlebürstenführung berührt. Durch Drehung des Kommutators, an dem die Kohlebürsten anliegen, können die Kohlebürsten innerhalb der Kohlebürstenführung so kippen, dass mindestens zwei verschiedene Schichten der Kohlebürste mit der Führung linienförmig in Kontakt kommen. Somit entstehen in dieser Stellung Kurzschlussströme, die zu einer übermäßigen Erwärmung von Motorwicklungen und Kollektor und einem erhöhten Bürstenverschleiß führen. Außerdem läuft die Kohlebürste in dieser Kippstellung über eine Bürstenkante, wodurch noch ein unnötiges Bürstengeräusch erzeugt wird.Furthermore, carbon brush guides are known from the prior art, the usually consist of brass sheet and have no insulation layer. Large gaps must be between such an electrically conductive carbon brush guide and a multi-layer carbon brush to allow the multilayer carbon brush As a rule, only with a maximum of one carbon layer, the carbon brush guide touched. By rotation of the commutator, on which the carbon brushes lie, The carbon brushes within the carbon brush guide can tilt so that at least two different layers of carbon brush with the guide come in line contact. This results in short-circuit currents in this position which leads to excessive heating of motor windings and collector and lead to increased brush wear. In addition, the carbon brush runs in this tilting position over a brush edge, which still unnecessary brush noise is produced.

Der Erfindung liegt deshalb die Aufgabe zugrunde, für eine Kohlebürstenführung der eingangs genannten Art eine Isolierung zwischen einer Kohlebürste und deren Führung anzugeben, die thermisch und mechanisch stark belastbar ist, und dass die Kohlebürstenführung wirtschaftlich zu fertigen ist. Dabei soll zum einen die Kohlebürstenführung so beschaffen sein, dass beim bestimmungsgemäßen Einsatz in einer dynamo-elektrischen Maschine keine unnötigen Bürstengeräusche entstehen und zum anderen die Kohlebürste einen möglichst geringen Verschleiß aufweist.The invention is therefore the object of a carbon brush guide of the type mentioned insulation between a carbon brush and their To provide leadership that is thermally and mechanically strong load, and that the carbon brush guide is economical to manufacture. It should on the one hand the Carbon brush guide be designed so that when the intended Use in a dynamo-electric machine no unnecessary brush noise arise and on the other hand, the carbon brush the smallest possible Wear has.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung werden durch die Merkmale der Unteransprüche dargestellt.According to the invention, this object is achieved by the features of claim 1 solved. Advantageous embodiments of the invention are characterized by the features the subclaims shown.

Als besonders vorteilhaft hat es sich erwiesen, die Kohlebürstenführung aus Aluminium auszubilden, da Aluminium sehr gute thermo-elektrische Eigenschaften aufweist. Außerdem bildet vorteilhafterweise das Aluminium beim Eloxieren eine nicht leitfähige sehr dünne Oxidschicht aus. Diese Aluminiumoxidschicht bzw. To be particularly advantageous, it has proven the carbon brush guide Aluminum form, since aluminum has very good thermo-electrical properties having. In addition, advantageously the aluminum forms anodising non-conductive very thin oxide layer. This alumina layer or

Eloxalschicht hat üblicherweise eine Dicke von 5 µm bis 30 µm und ist dabei noch äußerst beständig und thermisch wie mechanisch widerstandsfähig. Zusätzlich bleiben vorteilhafterweise die guten thermischen Eigenschaften des Aluminiums erhalten.Eloxalschicht usually has a thickness of 5 microns to 30 microns and is still there extremely durable and thermally and mechanically resistant. additionally advantageously remain the good thermal properties of aluminum receive.

Durch eine vorteilhafte Weiterbildung der Erfindung, bei der die Eloxalschicht als eine wärmeabsorbierende Schicht ausgebildet ist, kann die am Kommutator entstehende Wärme von der Eloxalschicht absorbiert und über die thermisch gut leitende Kohlebürstenführung abgeleitet werden. Dies ist insbesondere deshalb von Bedeutung, da beim Betrieb der dynamo-elektrischen Maschine die am Kommutator, insbesondere an der Kontaktstelle der Kohlebürste zum Kommutator, entstehende Wärme möglichst schnell und hinreichend abgeführt werden muss. Dadurch kann vorteilhafterweise ein Verschleiß der Kohlebürste zusätzlich verringert werden.By an advantageous development of the invention, in which the anodization as a heat absorbing layer is formed, that at the commutator resulting heat absorbed by the anodized layer and on the thermally well conductive carbon brush guide are derived. This is especially so Of importance, since the operation of the dynamo-electric machine on Commutator, in particular at the contact point of the carbon brush to the commutator, arising heat as quickly as possible and sufficiently dissipated got to. This can advantageously wear of the carbon brush in addition be reduced.

Zur Ausbildung einer wärmeabsorbierenden Schicht wird die Eloxalschicht vorteilhafterweise in einer dunklen Farbe, vorzugsweise in schwarz, ausgebildet.To form a heat-absorbing layer, the anodized layer advantageously in a dark color, preferably in black.

Die Stromübertragungseinheit bestehend aus der Kohlebürstenführung und der Kohlebürste kann zusätzlich einen Halter zur Aufnahme der Kohlenbürstenführung beinhalten. Dieser Halter wird im Allgemeinen aus Kunststoff gefertigt. Damit die Wärme bei einer solchen Stromübertragungseinheit von der Kohlebürstenführung wieder abgeführt werden kann, ist vorteilhafterweise diese Kohlebürstenführung nicht vollständig vom Kunststoff-Halter umgeben. So kann die Wärme über die freibleibenden äußeren Flächen der Kohlebürstenführung wieder abgestrahlt werden.The power transmission unit consisting of the carbon brush guide and the Carbon brush can also have a holder for holding the carbon brush guide include. This holder is generally made of plastic. So that Heat in such a power transmission unit of the carbon brush guide can be dissipated again, this carbon brush is advantageously not completely surrounded by the plastic holder. So the heat can over the reassigning outer surfaces of carbon brush guide radiated again become.

Als ein besonders kostengünstiges Verfahren zur Herstellung der Kohlebürstenführung hat es sich erwiesen, dass die Kohlebürstenführung aus einem eloxierten Aluminiumblech gebogen wird. Ein Eloxieren der schon gefertigten Aluminium-Kohlebürstenführung erwies sich als deutlich aufwendiger. Außerdem können beim Eloxieren ebener Flächen sehr gleichmäßige Schichtdicken erzeugt werden.As a particularly cost effective method of making the carbon brush guide it has been proven that the carbon brush guide made of anodized Aluminum sheet is bent. An anodizing of the already manufactured aluminum carbon brush guide proved to be significantly more complicated. In addition, you can when anodising flat surfaces very uniform layer thicknesses are generated.

Beim Biegen eines eloxierten Aluminiumbleches kann es vorkommen, dass die Eloxalschicht in den Biegebereichen reißt. In diesen Rissbereichen ist die Isolationswirkung deutlich vermindert. In einer weiteren vorteilhaften Weiterbildung der Erfindung ist die Kohlebürste und/oder die Kohlebürstenführung so gestaltet, dass die Kohlebürste und die Kohlebürstenführung sich in den Rissbereichen der Eloxalschicht nicht berühren können. Dadurch wird eine Ausbildung von Kürzschlussströmen, insbesondere zwischen den Schichten einer Mehrschichtkohlebürste, sicher unterbunden.When bending an anodized aluminum sheet, it may happen that the Eloxalschicht in the bending areas ruptures. In these crack areas is the insulation effect significantly reduced. In a further advantageous embodiment of Invention, the carbon brush and / or the carbon brush guide is designed so that the carbon brush and the carbon brush guide are in the crack areas of the Can not touch the anodizing layer. This results in a formation of short-circuit currents, especially between the layers of a multilayer carbon brush, safely prevented.

Vorteilhafterweise kann auch die Kohlebürste an ihren Längskanten mit einer Fase versehen werden, um so den benötigten Abstand zu den Rissbereichen der Eloxalschicht der Kohlebürstenführung herzustellen.Advantageously, the carbon brush at its longitudinal edges with a chamfer be provided so as to provide the required distance to the crack areas of Eloxalschicht the carbon brush guide produce.

Die Erfindung sowie deren vorteilhafte Ausgestaltungen werden nachfolgend an Hand eines Ausführungsbeispiel und zweier Zeichnungen näher beschrieben. Darin zeigen

  • Fig. 1 einen schematisch dargestellten Querschnitt durch eine Kohlebürstenführung einer Stromübertragungseinheit mit einer Mehrschichtkohlebürste und
  • Fig. 2 einen schematischen Querschnitt durch eine speziell geformte Kohlebürstenführung.
    • The invention and its advantageous embodiments are described below with reference to an embodiment and two drawings. Show in it
  • Fig. 1 shows a schematically illustrated cross section through a carbon brush guide of a power transmission unit with a multi-layer carbon brush and
  • 2 shows a schematic cross section through a specially shaped carbon brush guide.

    • In dem Ausführungsbeispiel ist die Kohlebürstenführung 5 einer Stromübertragungseinheit für einen Waschmaschinen-Elektromotor bestimmt. Dieser Waschmaschinen-Elektromotor ist vorzugsweise ein Universalmotor. Der Universalmotor (nicht dargestellt) beinhaltet unter anderem einen Stator, einen Rotor, einen Kommutator, zwei Lagerschilder und die Stromübertragungseinheit, die im wesentlichen aus der Kohlebürstenführung 5, der Kohlebürste 1 und dem Halter 8 besteht. Der Rotor und der Stator sind jeweils mit Eisenpaketen und entsprechenden Wicklungen zur Erzeugung von Magnetfeldern versehen. Der Kommutator ist mechanisch mit der Rotorwelle und elektrisch mit den Rotorwicklungen verbunden. Der Stator ist mechanisch an den Lagerschildern befestigt, die auch zur Aufnahme und Lagerung der Rotorwelle dienen. An einem der Lagerschilder ist unter anderem der Halter 8 der Stromübertragungseinheit befestigt.In the exemplary embodiment, the carbon brush guide 5 is a power transmission unit intended for a washing machine electric motor. This washing machine electric motor is preferably a universal motor. The universal motor (not shown) includes, among other things, a stator, a rotor, a Commutator, two bearing plates and the power transmission unit, which in the essentially from the carbon brush guide 5, the carbon brush 1 and the holder. 8 consists. The rotor and the stator are each packed with iron and corresponding Provided windings for generating magnetic fields. The commutator is mechanically connected to the rotor shaft and electrically connected to the rotor windings. The stator is mechanically attached to the bearing plates, which are also used for Serve recording and storage of the rotor shaft. At one of the bearing signs is among other things, the holder 8 of the power transmission unit attached.

    Wie bei Waschmaschinenmotoren im Wechselstrombetrieb (AC-Betrieb) üblich sind die Kohlebürsten als Mehrschicht-Kohlebürsten ausgeführt, um eine bessere Kommutierung zu erreichen. In Fig.1 ist eine Zwei-Schicht-Kohlebürste 1 dargestellt, die aus zwei mittels einer nichtleitenden Verbindung 3 miteinander verbundenen leitenden Kohlehälften 2, 4 besteht. Die eine Stirnseite der Kohlebürste 1 liegt auf dem Kommutator auf, wodurch eine leitende Verbindung zwischen einer Kommutator-Lamelle und der Kohlebürste entsteht, und die andere Stirnseite der Kohlebürste 1 ist mit einer Stromzuführungslitze kontaktiert, wodurch die beiden Kohlehälften 2 und 4 an der Kontaktstelle miteinander elektrisch verbunden sind.As usual with washing machine motors in AC operation The carbon brushes are designed as multi-layer carbon brushes to a better To achieve commutation. 1 shows a two-layer carbon brush 1, consisting of two interconnected by means of a non-conductive compound 3 conductive carbon halves 2, 4 consists. The one end face of the carbon brush 1 is on the commutator, creating a conductive connection between a Commutator blade and the carbon brush is formed, and the other end of the Carbon brush 1 is contacted with a Stromführührungslitze, whereby the two Coal halves 2 and 4 are electrically connected to each other at the contact point.

    Die Kohlebürstenführung 5 ist in Fig. 1 rein schematisch dargestellt. Im vorliegenden Ausführungsbeispiel ist diese Kohlebürstenführung 5 aus einem Aluminiumblech ausgeführt, das beidseitig eloxiert ist. Somit ist die Kohlebürstenführung 5 beidseitig mit einer nichtleitenden Aluminiumoxid bzw. Eloxalschicht 6, 7 ausgestattet. Die der Kohlebürste 1 zugewandten Schicht 6 bewirkt, dass die beiden Kohlehälften 2 und 4 bei einer möglichen Berührung der Kohlebürstenführung 5 nicht kurzgeschlossen werden. Eine solche Berührung tritt insbesondere dann auf, wenn die Kohlebürste 1 im Betrieb in der Kohlebürstenführung 5 leicht kippt. Die Isolierschicht 6 vermeidet einen Kurschluss zwischen den Kohlehälften 2 und 4. Dadurch werden die Kohlehälften 2, 4 immer gleichmäßig bestromt. Eine solche Bestromung der Kohlehälften 2, 4 führt zu einem gleichmäßigen und geringen Bürstenverschleiß.The carbon brush guide 5 is shown purely schematically in FIG. In the present Embodiment, this carbon brush guide 5 is made of an aluminum sheet executed, which is anodized on both sides. Thus, the carbon brush guide 5 equipped on both sides with a non-conductive aluminum oxide or Eloxalschicht 6, 7. The carbon brush 1 facing layer 6 causes the two Coal halves 2 and 4 in a possible touch of the carbon brush guide 5 not be short-circuited. Such a contact occurs in particular, when the carbon brush 1 tilts slightly in operation in the carbon brush guide 5. The Insulating layer 6 avoids a short circuit between the carbon halves 2 and 4. As a result, the coal halves 2, 4 are always energized evenly. Such Energizing the coal halves 2, 4 leads to a uniform and low Brush wear.

    Im vorliegenden Beispiel ist auch die außenliegende Wand der Kohlebürstenführung 5 mit einer nichtleitenden Eloxalschicht 7 ausgestattet. Hierdurch werden mögliche Kriechströme zwischen dem leitenden Lagerschild und der Kohlebürstenführung 5 vermieden. Dies ist vor allem dann von Bedeutung, wenn der Halter 8 aufgrund seiner Formgebung keinen ausreichenden Abstand zwischen dem Lagerschild und der Kohlenbürstenführung 5 gewährleisten kann.In the present example, the outer wall of the carbon brush guide is also 5 equipped with a non-conductive anodized 7. This will be possible leakage currents between the conductive end shield and the carbon brush guide 5 avoided. This is especially important if the holder 8 due to its shape is not sufficient distance between the End shield and the carbon brush guide 5 can ensure.

    Bei einer alternativen Ausführung wird die Kohlebürstenführung 6 direkt an das Lagerschild montiert, da die äußere Eloxalschicht 7 ausreichend isolierend ist. Somit kann die Stromübertragungseinheit noch kostengünstiger hergestellt werden, da auf den Halter 8 der Kohlebürstenführung 5 verzichtet werden kann.In an alternative embodiment, the carbon brush guide 6 directly to the Bearing shield mounted because the outer anodized layer 7 is sufficiently insulating. Thus, the power transmission unit can be made even cheaper be because the holder 8 of the carbon brush guide 5 can be dispensed with.

    Die Eloxalschicht 6, 7 ist in einer Dicke von 15 µm auf die Kohlebürstenführung 5 aufgebracht. Aber auch andere Schichtdicken zwischen 5 und 30 µm sind möglich. Solche Eloxalschichten 6, 7 sind hinreichend isolierend und dabei sehr verschleißfest und resistent gegen klimatische und chemische Einflüsse. Da die Dicke der Eloxalschicht 6 sehr gleichmäßig herstellbar ist und eine Berührung der Kohlebürste 1 mit der Kohlebürstenführung 5 aufgrund der nichtleitenden Eloxalschicht 6 möglich ist, kann der Führungsspalt (Spiel) zwischen Kohlebürste 1 und Kohlebürstenführung 5 sehr eng toleriert werden. Ein querliegendes Spiel nach DIN 43008 zwischen der Kohlebürste 1 und der Kohlebürstenführung 5 wird im vorliegenden Ausführungsbeispiel ohne weiteres eingehalten und ein Kippen der Kohlebürste 1 in der Kohlebürstenführung 5 wird somit vermieden. Durch eine derartig präzise Führung der Kohlebürste 1 wird ausgeschlossen, dass eine Kohlebürstenkante über eine Kommutator-Lamelle läuft und damit ein entsprechendes Bürstengeräusch erzeugt.The anodized layer 6, 7 is in a thickness of 15 microns on the carbon brush guide. 5 applied. But other layer thicknesses between 5 and 30 microns are possible. Such anodized layers 6, 7 are sufficiently insulating and very wear-resistant and resistant to climatic and chemical influences. Because the thickness of the Eloxalschicht 6 is very uniform and a touch of the carbon brush 1 with the carbon brush guide 5 due to the non-conductive anodized layer 6 is possible, the guide gap (clearance) between carbon brush 1 and carbon brush guide 5 are tolerated very tightly. A transverse game according to DIN 43008 between the carbon brush 1 and the carbon brush guide 5 is in Present embodiment readily complied with and tilting the Carbon brush 1 in the carbon brush guide 5 is thus avoided. By a Such precise guidance of the carbon brush 1 is excluded that a Carbon brush edge over a commutator blade runs and thus a corresponding Brush noise generated.

    Die Eloxalschicht 6 der Kohlebürstenführung 5 ist auf der den Kohlebürsten 1 zugewandten Fläche in einer schwarzen Farbe ausgeführt. Eine solche Farbgebung der Eloxalschicht 6 ist bei einem Eloxierverfahren durch geeignete Wahl der Herstellungsparameter einfach erzielbar. Es sind auch andere, insbesondere dunkle, Farben denkbar, die Wärmestrahlungen gut absorbieren können. Durch diese spezielle Farbgebung wird erreicht, dass die im Bereich der Kohlebürste 1 entstehende Wärme, die die Kontaktstelle zwischen Kohlebürste 1 und Kommutator und die Kohlebürste 1 in Form von Wärmestrahlung abstrahlen, von der Eloxalschicht 6 gut absorbiert wird.The anodizing layer 6 of the carbon brush guide 5 is on the carbon brushes. 1 facing surface executed in a black color. Such a coloring the Eloxalschicht 6 is in an anodization by a suitable choice of Production parameters easily achievable. There are others, too dark, colors conceivable that can absorb heat radiation well. By this special coloring is achieved that in the area of the carbon brush 1 resulting heat, which is the contact point between carbon brush 1 and commutator and radiate the carbon brush 1 in the form of heat radiation, from the Eloxal layer 6 is well absorbed.

    Die von der Eloxalschicht 6 aufgenommene Wärme wird an die Aluminium-Kohlebürstenführung 5 abgeben und an der den Kohlebürsten 1 abgewandten Seite wieder abgestrahlt. Um eine ungehinderte Wärmeabstrahlung zu gewährleisten, ist der Halter 8 der Kohlebürstenführung 5 so gestaltet, dass die Kohlebürstenführung 5 nicht vollständig vom Halter 8 umschlossen ist. Die freien außenliegenden Flächen der Kohlebürstenführung 5 strahlen dann die Wärme an die Umgebung ab. Die Wärmeabstrahlung bzw. die Wärmeabgabe der freiliegenden Flächen der Kohlebürstenführung wird zusätzlich begünstigt, wenn die Kohlebürstenführung in einem durch den Motor selbst erzeugten Luftstrom angeordnet ist. Dieser Luftstrom ist durch eine geeignete Gestaltung der Lagerschilder und/oder des Stators beeinflussbar. The heat absorbed by the anodizing layer 6 is transferred to the aluminum carbon brush guide 5 and turn away at the carbon brushes 1 Side again radiated. To ensure unimpeded heat radiation, the holder 8 of the carbon brush guide 5 is designed so that the carbon brush guide 5 is not completely enclosed by the holder 8. The free outside Surfaces of the carbon brush guide 5 then radiate heat to the Environment. The heat radiation or the heat release of the exposed Surfaces of the carbon brush guide is additionally favored when the carbon brush guide is arranged in an air flow generated by the engine itself. This air flow is through a suitable design of the bearing plates and / or of the stator influenced.

    In einer alternativen Ausführung der Stromübertragungseinheit, die keinen Halter 8 enthält, wird die Kohlebürstenführung 5 im direkten Kontakt zum Lagerschild am Lagerschild des Motors befestigt. Dadurch wird die Wärmeabfuhr aus dem Bereich der Kohlebürste 1 zusätzlich begünstigt, da die von der Kohlebürstenführung 5 aufgenommene Wärme direkt an das Lagerschild abgegeben wird. Eine solche direkte Befestigung der Kohlebürstenführung 5 an dem Lagerschild wird durch die nichtleitende außenliegende Eloxalschicht 7 ermöglicht.In an alternative embodiment of the power transmission unit, the no holder. 8 contains the carbon brush guide 5 in direct contact with the bearing plate on Bearing shield of the engine attached. As a result, the heat dissipation of the area the carbon brush 1 additionally favors, since the of the carbon brush guide 5 absorbed heat is delivered directly to the bearing plate. Such direct attachment of the carbon brush guide 5 on the bearing plate is determined by the non-conductive outer Eloxalschicht 7 allows.

    Zur vorteilhaften Herstellung der erfindungsgemäßen Kohlebürstenführung 5 wird in einem ersten Fertigungsschritt ein Aluminiumblech eloxiert. Aus einem solchen eloxierten Aluminiumblech wird in einem zweiten Fertigungsschritt ein Halbzeug für die Kohlebürstenführung 5 gefertigt. Im vorliegenden Ausführungsbeispiel wird das Halbzeug aus dem eloxierten Aluminiumblech gestanzt, aber auch andere geeignete Verfahren sind denkbar. Dieses Halbzeug wird dann in einem dritten Fertigungsschritt zu der Kohlebürstenführung 5 gebogen. Bei einem einseitig eloxiertem Aluminiumblech ist der Biegevorgang so gestaltet, dass die Eloxalschicht 6 innen liegt, also im Führungsbereich der Kohlebürste 1.For the advantageous production of the carbon brush guide 5 according to the invention anodized in an initial manufacturing step an aluminum sheet. Out of such Anodized aluminum sheet is a semi-finished product in a second production step made for the carbon brush guide 5. In the present embodiment is The semi-finished stamped from the anodized aluminum sheet, but also other suitable methods are conceivable. This semi-finished product is then in a third Production step to the carbon brush guide 5 bent. In a one-sided Anodized aluminum sheet, the bending process is designed so that the anodized layer 6 lies inside, so in the guide region of the carbon brush. 1

    Beim Biegen des voreloxierten Aluminiumbleches kann eine Eloxalschicht im Biegebereich reißen. Durch solche Risse kann die isolierende Wirkung der Eloxalschicht 6 gegenüber der Kohlebürste 1 im Biegebereich vermindert sein. Fig. 2 zeigt eine günstige Gestaltungsmöglichkeit einer Kohlebürstenführung 10, bei der jeder Umformbereich der Kohlebürstenführung mit einer konvexen Krümmung 11 beginnt und endet, also einer von der Kohlebürste 12 abgewandten Krümmung 11. Dadurch wird erreicht, dass die Kohlebürste 12 bei einer Verlagerung nur die nicht gekrümmten Flächen der Kohlebürstenführung 10 berühren kann. Somit ist ein Kontakt der Kohlebürste 12 mit den Bereichen ausgeschlossen, die mögliche Risse in der Eloxalschicht 6 aufweisen können. Im Laufe der Zeit werden die freiliegenden Bereiche des Aluminiums innerhalb der Risse durch den Sauerstoff der Luft selbsttätig wieder zu einer isolierenden Schicht aus Al2O3.When bending the pre-anodized aluminum sheet, an anodized layer may crack in the bending area. Such cracks can reduce the insulating effect of the anodizing layer 6 with respect to the carbon brush 1 in the bending region. 2 shows a favorable design possibility of a carbon brush guide 10, in which each deformation region of the carbon brush guide begins and ends with a convex curvature 11, that is, a curvature 11 facing away from the carbon brush 12. This ensures that the carbon brush 12 does not move when displaced curved surfaces of the carbon brush guide 10 can touch. Thus, a contact of the carbon brush 12 is excluded with the areas that may have possible cracks in the anodized layer 6. Over time, the exposed areas of aluminum within the cracks by the oxygen in the air automatically become an insulating layer of Al 2 O 3 again .

    Eine alternative Stromübertragungseinheit beinhaltet eine spezielle Gestaltung der Kohlebürste 1, bei der die Längskanten der Kohlebürste 1 jeweils eine Fase 9 aufweisen, wie es auch in Fig. 1 dargestellt ist. Auch in dieser Ausführung wird sichergestellt, dass die Kohlebürste bei einer Verlagerung nicht die Biegebereiche der Kohlebürstenführung 5 berühren kann.An alternative power transmission unit includes a special design of the Carbon brush 1, wherein the longitudinal edges of the carbon brush 1 each have a chamfer. 9 have, as shown in Fig. 1. Also in this version will ensures that the carbon brush does not reach the bending areas when relocating the carbon brush guide 5 can touch.

    Die vorliegende Erfindung ist nicht auf die Verwendung von Mehrschichtkohlenbürsten beschränkt, sondern sie kann auch für Blockkohlebürsten angewendet werden. Somit kann vorteilhafterweise die gleiche Ausführung der Kohlebürstenführung für beide Kohlebürstenarten bzw. für Wechselstrom- und Gleichstrom-Motore verwendet werden.The present invention is not limited to the use of multilayer carbon brushes limited, but it can also be applied for block carbon brushes become. Thus, advantageously, the same embodiment of the carbon brush guide for both carbon brush types or for AC and DC motors be used.

    Claims (10)

    Kohlebürstenführung für eine Stromübertragungseinheit einer dynamo-elektrischen Maschine, insbesondere für einen Elektromotor, wobei die Stromübertragungseinheit mindestens aus einer Kohlebürste (1), die insbesondere als Mehrschichtkohlebürste ausgeführt ist, und einer Kohlebürstenführung (5) aus Metall besteht, die mindestens kohlebürstenseitig eine isolierende Schicht aufweist, dadurch gekennzeichnet, dass die Kohlebürstenführung (5) in Aluminium mit mindestens einer Aluminiumoxid-Schicht (6, 7) ausgeführt ist.Carbon brush guide for a power transmission unit of a dynamo-electric machine, in particular for an electric motor, wherein the power transmission unit consists of at least one carbon brush (1), which is designed in particular as a multilayer carbon brush, and a carbon brush guide (5) made of metal, which has an insulating layer at least on the carbon brush side , characterized in that the carbon brush guide (5) in aluminum with at least one aluminum oxide layer (6, 7) is executed. Kohlebürstenführung nach Anspruch 1, dadurch gekennzeichnet, dass die Aluminiumoxid-Schicht (6,7) eine künstlich aufgebrachte Eloxal-Schicht ist.Carbon brush guide according to claim 1, characterized in that the aluminum oxide layer (6,7) is an artificially applied anodized layer. Kohlebürstenführung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Eloxalschicht (6, 7) eine Dicke aufweist, die zwischen 5 µm bis 30 µm liegt.Carbon brush guide according to claim 1 or 2, characterized in that the anodized layer (6, 7) has a thickness which is between 5 microns to 30 microns. Kohlebürstenführung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass mindestens kohlebürstenseitig die Eloxalschicht (6, 7) der Kohlebürstenführung (5) zur Absorption von Wärmestrahlen geeignet ist.Carbon brush guide according to one of claims 1 to 3, characterized in that at least the carbon brush side, the anodized layer (6, 7) of the carbon brush guide (5) is suitable for absorbing heat rays. Kohlebürstenführung nach Anspruch 4, dadurch gekennzeichnet, dass mindestens kohlebürstenseitig die Eloxalschicht (6, 7) der Kohlebürstenführung (5) dunkel, insbesondere schwarz, eingefärbt ist.Carbon brush guide according to claim 4, characterized in that at least the carbon brush side, the anodized layer (6, 7) of the carbon brush guide (5) dark, especially black, colored. Stromübertragungseinheit mit einer Kohlebürstenführung nach einem der Ansprüche 1 bis 5 und einer Kohlebürste, dadurch gekennzeichnet, dass die Kohlebürste (1, 12) und/oder die Kohlebürstenführung (5, 10) so geformt sind, dass sich die Kohlebürste (1, 12) und die Kohlebürstenführung (5, 10) nur an nicht gekrümmten Flächen der Kohlebürstenführung (5, 10) berühren können.Power transmission unit with a carbon brush guide according to one of claims 1 to 5 and a carbon brush, characterized in that the carbon brush (1, 12) and / or the carbon brush guide (5, 10) are shaped so that the carbon brush (1, 12) and the carbon brush guide (5, 10) can touch only on non-curved surfaces of the carbon brush guide (5, 10). Stromübertragungseinheit nach Anspruch 6, die zusätzlich einen Halter (8) aus Kunststoff zur Aufnahme der Kohlebürstenführung (5) enthält, dadurch gekennzeichnet, dass die Kohlebürstenführung (5) nicht vollständig vom Halter (8) umfasst ist.Power transmission unit according to claim 6, which additionally contains a holder (8) made of plastic for receiving the carbon brush guide (5), characterized in that the carbon brush guide (5) is not completely covered by the holder (8). Kohlebürste für eine Stromübertragungseinheit nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Kohlebürste (1) an allen Längskanten eine Fase (9) aufweist.Carbon brush for a power transmission unit according to one of claims 6 or 7, characterized in that the carbon brush (1) has a chamfer (9) on all longitudinal edges. Dynamo-elektrische Maschine, insbesondere ein Elektromotor, dadurch gekennzeichnet, dass die dynamo-elektrische Maschine mit einer Kohlebürstenführung (5) nach einem der Ansprüche 1 bis 5, mit einer Kohlebürste nach Anspruch 8 und/oder mit einer Stromübertragungseinheit nach einem der Ansprüchen 6 oder 7 versehen ist.Dynamo-electric machine, in particular an electric motor, characterized in that the dynamo-electric machine with a carbon brush guide (5) according to one of claims 1 to 5, with a carbon brush according to claim 8 and / or with a power transmission unit according to one of claims 6 or 7 is provided. Herstellungsverfahren einer Kohlebürstenführung für eine Stromübertragungseinheit einer dynamo-elektrischen Maschine, insbesondere eines Elektromotors, dadurch gekennzeichnet, dass das Verfahren folgende Schritte enthält: a. Eloxieren eines Aluminiumblechabschnitts mindestens auf einer Seite, b. Fertigen eines Halbzeugs für die Kohlenbürstenführung (5, 10) aus dem eloxiertem Aluminiumblechabschnitt und c. Biegen des Halbzeugs zu einer Kohlebürstenführung (5, 10). Manufacturing method of a carbon brush guide for a power transmission unit of a dynamo-electric machine, in particular an electric motor, characterized in that the method comprises the following steps: a. Anodizing an aluminum sheet section at least on one side, b. Finishing a semi-finished for the carbon brush guide (5, 10) from the anodized aluminum sheet section and c. Bending the semi-finished product to a carbon brush guide (5, 10).
    EP04022219A 2003-10-14 2004-09-17 Isolating brush guide Expired - Lifetime EP1524738B1 (en)

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    EP1524738B1 EP1524738B1 (en) 2006-11-29

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    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102014214221A1 (en) 2014-07-22 2016-01-28 Schunk Kohlenstofftechnik Gmbh Laminated carbon brush and method for producing a laminated carbon brush

    Families Citing this family (13)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10347764A1 (en) * 2003-10-14 2005-05-12 Bsh Bosch Siemens Hausgeraete Insulated carbon brush guide
    FR2896095B1 (en) * 2006-01-11 2008-06-13 Siemens Vdo Automotive Sas BROOM FOR ELECTRIC MOTOR
    KR100740126B1 (en) * 2006-02-02 2007-07-16 삼성에스디아이 주식회사 Cell barrier for secondary battery module and secondary battery module
    DE102006029671A1 (en) * 2006-06-28 2008-01-03 BSH Bosch und Siemens Hausgeräte GmbH Guiding device for carbon brush, has hot plate made of aluminum material by extrusion molding and cutting, where isolating layer of hot plate is manufactured by chemical oxidization of aluminum material
    US9762015B2 (en) * 2014-06-10 2017-09-12 General Electric Company Brush holder apparatus and system
    US9793670B2 (en) * 2014-06-10 2017-10-17 General Electric Company Brush holder apparatus and system
    US9647404B2 (en) * 2014-06-10 2017-05-09 General Electric Company Brush holder apparatus and system
    US9762014B2 (en) * 2014-06-10 2017-09-12 General Electric Company Brush holder apparatus and system
    DE102014117370A1 (en) 2014-11-26 2016-06-02 Thyssenkrupp Ag Guide rail for elevator system and elevator system
    CN105429373B (en) * 2015-12-10 2018-09-04 佛山市威灵洗涤电机制造有限公司 Carbon brush component and motor
    US10658806B2 (en) 2017-04-13 2020-05-19 General Electric Company Brush holder apparatus having brush wear indicator
    US10284056B2 (en) 2017-04-13 2019-05-07 General Electric Company Brush holder apparatus having brush terminal
    JP6375422B2 (en) * 2017-08-28 2018-08-15 株式会社ミツバ Motor with reduction mechanism

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE759800C (en) * 1939-08-17 1953-09-07 Siemens Schuckertwerke A G Brush holders for electrical machines
    GB2191346A (en) * 1986-06-06 1987-12-09 Johnson Electric Ind Mfg Insulating metallic brush cages for electric motors
    US5481150A (en) * 1991-04-25 1996-01-02 Kabushiki Kaisha Tec Brush and commutator motor having brush device using the same
    DE19522329A1 (en) * 1995-06-20 1997-01-02 Hoffmann Elektrokohle Brush-holder for electric motors e.g. commutator motors

    Family Cites Families (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB219346A (en) * 1923-01-22 1924-07-22 British Aluminium Co Ltd Improvements relating to aluminium alloys
    US2783405A (en) * 1953-02-24 1957-02-26 Atkins Bernard Roy Dynamo-electric machine brush
    US2948795A (en) * 1958-07-17 1960-08-09 Gen Devices Inc Commutator brush assembly
    US3654504A (en) * 1971-03-29 1972-04-04 Gen Electric Brush mechanism
    US4056749A (en) * 1976-01-19 1977-11-01 General Signal Corporation Modular motor
    DE3882045D1 (en) 1988-09-16 1993-07-29 Siemens Ag METAL BRUSH COOKER FOR A MULTILAYER BRUSH.
    DE9106978U1 (en) * 1991-06-07 1992-10-01 Robert Bosch Gmbh, 7000 Stuttgart Small electric motor with a housing with an opening
    JPH04372546A (en) * 1991-06-20 1992-12-25 Seiko Epson Corp Stepping motor
    DE19543125A1 (en) * 1995-11-18 1997-05-22 Teves Gmbh Alfred Brush support plate
    DE19931915A1 (en) * 1999-07-08 2001-01-18 Carl Kittel Autoteile Gmbh Process for anodizing a surface e.g. aluminum parts for vehicles comprises pickling the surface, and anodizing the surface to form an anodized layer on the surface
    DE10054537A1 (en) * 2000-11-03 2002-06-06 Hoffmann & Co Elektrokohle Ag Brush arrangement for electric motors
    JP4360035B2 (en) * 2001-02-13 2009-11-11 パナソニック電工株式会社 Motor brush holding structure
    DE10157604A1 (en) 2001-11-26 2003-06-05 Schunk Italia S R L Carbon brush guide
    DE10347764A1 (en) * 2003-10-14 2005-05-12 Bsh Bosch Siemens Hausgeraete Insulated carbon brush guide

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE759800C (en) * 1939-08-17 1953-09-07 Siemens Schuckertwerke A G Brush holders for electrical machines
    GB2191346A (en) * 1986-06-06 1987-12-09 Johnson Electric Ind Mfg Insulating metallic brush cages for electric motors
    US5481150A (en) * 1991-04-25 1996-01-02 Kabushiki Kaisha Tec Brush and commutator motor having brush device using the same
    DE19522329A1 (en) * 1995-06-20 1997-01-02 Hoffmann Elektrokohle Brush-holder for electric motors e.g. commutator motors

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102014214221A1 (en) 2014-07-22 2016-01-28 Schunk Kohlenstofftechnik Gmbh Laminated carbon brush and method for producing a laminated carbon brush
    DE102014214221B4 (en) 2014-07-22 2021-08-26 Schunk Kohlenstofftechnik Gmbh Layered carbon brush and method for manufacturing a layered carbon brush

    Also Published As

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    CN1607704A (en) 2005-04-20
    US20050156478A1 (en) 2005-07-21
    DE10347764A1 (en) 2005-05-12
    US7514836B2 (en) 2009-04-07
    EP1524738B1 (en) 2006-11-29
    ATE347185T1 (en) 2006-12-15
    CN100481650C (en) 2009-04-22
    DE502004002158D1 (en) 2007-01-11

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