EP1788670B1 - Brush holder for electrical toll motor - Google Patents

Brush holder for electrical toll motor Download PDF

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Publication number
EP1788670B1
EP1788670B1 EP05025221A EP05025221A EP1788670B1 EP 1788670 B1 EP1788670 B1 EP 1788670B1 EP 05025221 A EP05025221 A EP 05025221A EP 05025221 A EP05025221 A EP 05025221A EP 1788670 B1 EP1788670 B1 EP 1788670B1
Authority
EP
European Patent Office
Prior art keywords
brush
guide housing
brush holder
holding means
holder 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.)
Not-in-force
Application number
EP05025221A
Other languages
German (de)
French (fr)
Other versions
EP1788670A1 (en
Inventor
Markus Dr.-Ing. Johnen
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Priority to AT05025221T priority Critical patent/ATE412997T1/en
Priority to DE502005005826T priority patent/DE502005005826D1/en
Priority to EP05025221A priority patent/EP1788670B1/en
Publication of EP1788670A1 publication Critical patent/EP1788670A1/en
Application granted granted Critical
Publication of EP1788670B1 publication Critical patent/EP1788670B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R39/38—Brush holders
    • H01R39/383—Brush holders characterised by the electrical connection to the brush holder

Definitions

  • the present invention relates to a brush holder for an electric motor, in particular of a power tool with the features of the preamble of claim 1.
  • Such a brush holder is known from DE-A-37 26 894 , which is considered to be the closest prior art, and EP-A-0 874 424 ,
  • the abrasive brush which is usually designed as a carbon brush, is in the operating state of a concentric grinding surface on the jacket of a commutator.
  • the longitudinal displacement of the brush is given to the commutator in the radial direction.
  • the brush is usually biased by a brush spring radially inward toward the grinding surface of the commutator.
  • the present invention has for its object to counteract this problem effectively.
  • the portion of the brush strand extending between the holding device and the grinding brush can no longer get caught on other parts of the device. If the part of the brush strand extending beyond the retaining device hooks behind somewhere, this no longer has any influence on the longitudinal displaceability of the brush in the guide housing.
  • the exposed between the fixture and the brush surface portion of the brush strand is chosen so long that it allows a corresponding feeding of the brush over the entire intended wear and tear. It does not come to the previously mentioned "hanging" the brush from the brush strand.
  • the holding device could be designed in any desired manner, as long as it fulfills the aforementioned purpose.
  • the holding device acts by clamping with the brush strand.
  • a screwable against a jaw clamping screw could be provided.
  • the holding device is designed so that the brush strand can be clamped without tools.
  • the holding device has an open-edge clamping opening.
  • This clamping opening could for example be slit-shaped, so that the brush strand can be inserted into the elongated slot and jammed therein.
  • the clamping opening may have a round clear cross-sectional area at least in one section.
  • the holding device transversely to Longitudinal direction of the brush extends away from the guide housing. In this way, space is created within which the brush strand can be kept trackable.
  • the holding device can receive the brush strand in a fixing manner at its free end.
  • the brush strand can then extend in any way away from the brush in the direction of working circuit of the electric motor. It would be particularly conceivable that the brush strand is connected directly to the live contact (of the switch or the field coil), so that no additional contact points are required.
  • the system according to the invention with the shaft or quiver-like guide housing with holding device and brush is easier to mount than known systems, as a total of fewer contacts must be made. Therefore, the system is less error prone; Plug connections tend to fail under the influence of temperature and vibration.
  • the guide housing comprises a sheet metal material and the holding device comprises a notched from a wall of the guide housing web. In this way it is possible to realize a one-piece design of the holding device and the guide housing in a particularly simple manner.
  • Brush strand extends from the grinding brush to the outside and to the holding device.
  • the guide housing has supports for a spring means, which loads the brush in the radial direction, wherein the supports are formed integrally with the guide housing or attached to the guide housing.
  • the figures show a brush holder 2 according to the invention as a preassembled assembly 4, in particular for use in a power tool.
  • the assembly 4 comprises a quiver-shaped or shaft-shaped guide housing 6 and an abrasive brush 8 inserted therein in the form of a carbon brush. From the grinding brush 8 leads a brush strand 10 away to a holding device 12, where the brush strand 10 is fixed by clamping. From there the bristle leads to a contact, not shown, of the working circuit of an electric motor.
  • the holding device 12 is formed from a notched from a wall 14 of the guide housing 6 web 16.
  • the web 16 has at its free end an open-edge clamping opening 18 in which the brush strand 10 is at least so clamped that at a certain Tensile stress on the strand 10 this remains in its position shown in the figures, so that a sufficient strand length in the area between the holding device 12 and the brush 8 remains, which allows tracking of the brush 8 in the direction of arrow 20.
  • the brush strand 10 extends from the grinding brush 8 through a slot 22 in the wall 14 of the guide housing 6, which is formed by the notching of the web 16.
  • a spring 24 which biases the brush 8 in the direction of the arrow 20, that is to say in the radial direction onto the commutator (not shown), and at the other end is fixed to bent retaining tongues of the guide housing 6.

Abstract

The holder has a guide housing (6) for receiving a contact brush (8) and a holding device (12) provided at the guide housing for fixing a brush strand (10) such that the length of the brush strand is provided for pushing the contact brush. The holding device has a clamp opening (18) that is tapered in an insertion direction. The strand is directly attached to a contact of an operating circuit in an electric motor. The housing includes a sheet material and the holding device includes a bar (16) notched from a wall (14) of the housing.

Description

Die vorliegende Erfindung betrifft einen Bürstenhalter für einen Elektromotor insbesondere eines Elektrowerkzeuggeräts mit den Merkmalen des Oberbegriffs des Anspruchs 1.The present invention relates to a brush holder for an electric motor, in particular of a power tool with the features of the preamble of claim 1.

Ein derartiger Bürstenhalter ist bekannt aus DE-A-37 26 894 , die als nächstliegender Stand der Technik angesehen wird, und EP-A-0 874 424 .Such a brush holder is known from DE-A-37 26 894 , which is considered to be the closest prior art, and EP-A-0 874 424 ,

Ein anderer Bürstenhalter ist beispielsweise bekannt aus EP 0 615 316 B1 oder EP 0 397 973 B1 . Die Schleifbürste, die in der Regel als Kohlebürste ausgebildet ist, liegt im Betriebszustand an einer konzentrischen Schleiffläche am Mantel eines Kommutators an. Die Längsverschieblichkeit der Schleifbürste ist dabei zu dem Kommutator in radialer Richtung gegeben. Die Schleifbürste ist üblicherweise mittels einer Bürstenfeder nach radial innen in Richtung auf die Schleiffläche des Kommutators vorgespannt.Another brush holder is known, for example EP 0 615 316 B1 or EP 0 397 973 B1 , The abrasive brush, which is usually designed as a carbon brush, is in the operating state of a concentric grinding surface on the jacket of a commutator. The longitudinal displacement of the brush is given to the commutator in the radial direction. The brush is usually biased by a brush spring radially inward toward the grinding surface of the commutator.

Bei bekannten Bürstenhaltern bzw. Elektrowerkzeuggeräten mit solchen bekannten Bürstenhaltern kommt es häufig vor, dass sich die frei liegende Bürstenlitze an Gehäusebauteilen, Rippen und Schraubaugen und dergleichen verfängt. Dies wird durch Vibrationen des Werkzeuggeräts unterstützt. Solchenfalls kommt es dazu, dass sich die Schleifbürste im Laufe ihrer Abnutzung an der Bürstenlitze "aufhängt", d. h. die Schleifbürste kann sich nicht ihrem Verschleiß folgend weiter in Richtung auf den Kommutator bewegen, wenn sie infolge der verhakten Bürstenlitze an dieser Nachführbewegung gehindert wird.In known brush holders or power tools with such known brush holders, it often happens that the exposed brush strand on housing components, ribs and screw eyes and the like gets caught. This is supported by vibrations of the power tool. In this case, it comes to the fact that the abrasive brush in the course of their wear on the brush strand "hangs", d. H. the abrasive brush can not continue to move in the direction of the commutator following its wear when it is prevented from following by the entangled brush strand.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, diesem Problem wirkungsvoll zu begegnen.The present invention has for its object to counteract this problem effectively.

Diese Aufgabe wird durch einen Bürstenhalter mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a brush holder with the features of claim 1.

Dadurch, dass die Bürstenlitze durch eine direkt am Führungsgehäuse angeordnete Haltevorrichtung lokalisiert und fixiert ist, kann sich der zwischen der Haltevorrichtung und der Schleifbürste erstreckte Abschnitt der Bürstenlitze nicht mehr an sonstigen Geräteteilen verfangen. Sofern der jenseits der Haltevorrichtung erstreckte Teil der Bürstenlitze irgendwo hinterhakt, so hat dies keinen Einfluss auf die Längsverschiebbarkeit der Schleifbürste in dem Führungsgehäuse mehr. Der zwischen der Haltevorrichtung und der Schleifbürste freiliegende Abschnitt der Bürstenlitze wird dabei so lang gewählt, dass er ein entsprechendes Nachschieben der Schleifbürste über die gesamte bestimmungsgemäße Abnutzungsstrecke gestattet. Es kommt so nicht zu dem vorausgehend erwähnten "Aufhängen" der Schleifbürste aus der Bürstenlitze.Because the brush strand is located and fixed by a holding device arranged directly on the guide housing, the portion of the brush strand extending between the holding device and the grinding brush can no longer get caught on other parts of the device. If the part of the brush strand extending beyond the retaining device hooks behind somewhere, this no longer has any influence on the longitudinal displaceability of the brush in the guide housing. The exposed between the fixture and the brush surface portion of the brush strand is chosen so long that it allows a corresponding feeding of the brush over the entire intended wear and tear. It does not come to the previously mentioned "hanging" the brush from the brush strand.

Die Haltevorrichtung könnte in an sich beliebiger Weise ausgebildet sein, solange sie den vorstehend genannten Zweck erfüllt. In vorteilhafter Weise wirkt die Haltevorrichtung klemmend mit der Bürstenlitze zusammen.The holding device could be designed in any desired manner, as long as it fulfills the aforementioned purpose. Advantageously, the holding device acts by clamping with the brush strand.

Hierfür könnte beispielsweise eine gegen eine Klemmbacke schraubbare Klemmschraube vorgesehen sein. Es erweist sich indessen als vorteilhaft, wenn die Haltevorrichtung so ausgebildet ist, dass die Bürstenlitze werkzeuglos daran geklemmt werden kann.For this purpose, for example, a screwable against a jaw clamping screw could be provided. However, it proves to be advantageous if the holding device is designed so that the brush strand can be clamped without tools.

In weiterer Ausbildung dieses Erfindungsgedankens erweist es sich als vorteilhaft, wenn die Haltevorrichtung eine randoffene Klemmöffnung aufweist. Diese Klemmöffnung könnte beispielsweise schlitzförmig erstreckt sein, so dass die Bürstenlitze in den länglichen Schlitz eingesteckt werden kann und hierin verklemmt.In a further embodiment of this inventive concept, it proves to be advantageous if the holding device has an open-edge clamping opening. This clamping opening could for example be slit-shaped, so that the brush strand can be inserted into the elongated slot and jammed therein.

In Weiterbildung dieses Erfindungsgedankens erweist es sich als vorteilhaft, wenn die Klemmöffnung sich in Einsteckrichtung verjüngt. Auf diese Weise kann eine besonders effektive Klemmung der Bürstenlitze erreicht werden.In a further development of this inventive concept, it proves to be advantageous if the clamping opening tapers in the insertion direction. In this way, a particularly effective clamping of the brush strand can be achieved.

In noch weitergehender Ausbildung kann es sich als vorteilhaft erweisen, wenn die Klemmöffnung sich nach der Verjüngung wieder geringfügig erweitert. Die Klemmöffnung kann zumindest in einem Abschnitt eine runde lichte Querschnittsfläche aufweisen.In still further training, it may prove advantageous if the clamping opening widens slightly after the taper again. The clamping opening may have a round clear cross-sectional area at least in one section.

Nach einem weiteren Erfindungsgedanken erweist es sich als vorteilhaft, wenn sich die Haltevorrichtung quer zur Längsverschieberichtung der Schleifbürste von dem Führungsgehäuse weg erstreckt. Auf diese Weise wird Raum geschaffen, innerhalb dessen die Bürstenlitze nachführbar vorgehalten werden kann.According to a further concept of the invention, it proves to be advantageous if the holding device transversely to Longitudinal direction of the brush extends away from the guide housing. In this way, space is created within which the brush strand can be kept trackable.

In Weiterbildung dieses Erfindungsgedankens kann die Haltevorrichtung an ihrem freien Ende die Bürstenlitze fixierend aufnehmen.In a further development of this inventive idea, the holding device can receive the brush strand in a fixing manner at its free end.

Ausgehend von der Haltevorrichtung kann sich die Bürstenlitze dann in beliebiger Weise von der Schleifbürste weg in Richtung Arbeitsstromkreis des Elektromotors erstrecken. Es wäre insbesondere denkbar, dass die Bürstenlitze direkt am spannungsführenden Kontakt (des Schalters oder der Feldspule) angeschlossen ist, so dass keine zusätzlichen Kontaktstellen mehr benötigt werden. Insgesamt ist das erfindungsgemäße System mit dem schacht- oder köcherartigen Führungsgehäuse mit Haltevorrichtung und Schleifbürste montagefreundlicher als bekannte Systeme, da insgesamt weniger Kontaktierungen vorgenommen werden müssen. Daher ist das System auch weniger fehleranfällig; Steckverbindungen neigen nämlich unter Temperatur- und Vibrationseinfluss zum Ausfall.Starting from the holding device, the brush strand can then extend in any way away from the brush in the direction of working circuit of the electric motor. It would be particularly conceivable that the brush strand is connected directly to the live contact (of the switch or the field coil), so that no additional contact points are required. Overall, the system according to the invention with the shaft or quiver-like guide housing with holding device and brush is easier to mount than known systems, as a total of fewer contacts must be made. Therefore, the system is less error prone; Plug connections tend to fail under the influence of temperature and vibration.

Nach einem weiteren Erfindungsgedanken erweist es sich als vorteilhaft, dass das Führungsgehäuse ein Blechmaterial umfasst und die Haltevorrichtung einen aus einer Wandung des Führungsgehäuses ausgeklinkten Steg umfasst. Auf diese Weise ist es möglich, eine einstückige Ausbildung der Haltevorrichtung und des Führungsgehäuses in besonders einfacher Weise zu verwirklichen.According to a further inventive concept, it proves to be advantageous that the guide housing comprises a sheet metal material and the holding device comprises a notched from a wall of the guide housing web. In this way it is possible to realize a one-piece design of the holding device and the guide housing in a particularly simple manner.

In noch weitergehender Ausbildung dieses Erfindungsgedankens erweist es sich als vorteilhaft, dass durch Ausklinken des Stegs ein Schlitz in der Wandung des Führungsgehäuses gebildet ist, durch den sich die Bürstenlitze ausgehend von der Schleifbürste nach außen und zu der Haltevorrichtung erstreckt.In a further development of this inventive concept, it proves to be advantageous that by notching the web, a slot is formed in the wall of the guide housing through which the brush strand extends from the grinding brush to the outside and to the holding device.

Bürstenlitze ausgehend von der Schleifbürste nach außen und zu der Haltevorrichtung erstreckt.Brush strand extends from the grinding brush to the outside and to the holding device.

Des Weiteren erweist es sich als vorteilhaft, wenn das Führungsgehäuse Abstützungen für ein Federmittel aufweist, welches die Schleifbürste in radialer Richtung belastet, wobei die Abstützungen einstückig mit dem Führungsgehäuse ausgebildet oder an das Führungsgehäuse angefügt sind.Furthermore, it proves to be advantageous if the guide housing has supports for a spring means, which loads the brush in the radial direction, wherein the supports are formed integrally with the guide housing or attached to the guide housing.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den beigefügten Patentansprüchen und der zeichnerischen Darstellung und nachfolgenden Beschreibung einer bevorzugten Ausführungsform des erfindungsgemäßen Bürstenhalters.Further features, details and advantages of the invention will become apparent from the appended claims and the drawings and the following description of a preferred embodiment of the brush holder according to the invention.

In der Zeichnung zeigt:

Figuren 1 bis 3
verschiedene perspektivische Ansichten eines erfindungsgemäßen Bürstenhalters.
In the drawing shows:
FIGS. 1 to 3
various perspective views of a brush holder according to the invention.

Die Figuren zeigen einen erfindungsgemäßen Bürstenhalter 2 als vormontierbare Baugruppe 4 insbesondere für die Verwendung bei einem Elektrowerkzeuggerät. Die Baugruppe 4 umfasst ein köcher- oder schachtförmiges Führungsgehäuse 6 und eine darin eingesetzte Schleifbürste 8 in Form einer Kohlebürste. Von der Schleifbürste 8 führt eine Bürstenlitze 10 weg zu einer Haltevorrichtung 12, wo die Bürstenlitze 10 klemmend fixiert ist. Von dort führt die Bürstenlitze zu einem nicht dargestellten Kontakt des Arbeitsstromkreises eines Elektromotors. Die Haltevorrichtung 12 ist gebildet aus einem aus einer Wandung 14 des Führungsgehäuses 6 ausgeklinkten Steg 16. Der Steg 16 weist an seinem freien Ende eine randoffene Klemmöffnung 18 auf, in der die Bürstenlitze 10 zumindest derart klemmend gehalten ist, dass bei einer gewissen Zugbeanspruchung auf die Litze 10 diese in ihrer in den Figuren dargestellten Position verbleibt, so dass eine ausreichende Litzenlänge in dem Bereich zwischen der Haltevorrichtung 12 und der Schleifbürste 8 verbleibt, die ein Nachführen der Schleifbürste 8 in Richtung des Pfeils 20 ermöglicht. Dabei erstreckt sich die Bürstenlitze 10 ausgehend von der Schleifbürste 8 durch einen Schlitz 22 in der Wandung 14 des Führungsgehäuses 6, der durch das Ausklinken des Stegs 16 gebildet ist.The figures show a brush holder 2 according to the invention as a preassembled assembly 4, in particular for use in a power tool. The assembly 4 comprises a quiver-shaped or shaft-shaped guide housing 6 and an abrasive brush 8 inserted therein in the form of a carbon brush. From the grinding brush 8 leads a brush strand 10 away to a holding device 12, where the brush strand 10 is fixed by clamping. From there the bristle leads to a contact, not shown, of the working circuit of an electric motor. The holding device 12 is formed from a notched from a wall 14 of the guide housing 6 web 16. The web 16 has at its free end an open-edge clamping opening 18 in which the brush strand 10 is at least so clamped that at a certain Tensile stress on the strand 10 this remains in its position shown in the figures, so that a sufficient strand length in the area between the holding device 12 and the brush 8 remains, which allows tracking of the brush 8 in the direction of arrow 20. In this case, the brush strand 10 extends from the grinding brush 8 through a slot 22 in the wall 14 of the guide housing 6, which is formed by the notching of the web 16.

Des Weiteren dargestellt ist eine Feder 24, welche die Schleifbürste 8 in Richtung des Pfeils 20, also in radialer Richtung auf den nicht dargestellten Kommutator, vorspannt und anderenends an abgebogenen Haltezungen des Führungsgehäuses 6 festgelegt ist.Also shown is a spring 24, which biases the brush 8 in the direction of the arrow 20, that is to say in the radial direction onto the commutator (not shown), and at the other end is fixed to bent retaining tongues of the guide housing 6.

Claims (13)

  1. Brush holder (2) for an electric motor of a power tool, comprising a guide housing (6) which is made of metal sheet material and which receives a contact brush (8) in a longitudinally displaceable manner, a holding means (12), for fixing the brush wire (10), being provided on the guide housing (6) in such a way that a sufficient length of wire is available for pushing the contact brush (8) from behind, characterised in that the holding means (12) comprises a web (16) which is notched out of a wall (14) of the guide housing (6), and in that by releasing the web (16), a slot (22) is formed in the wall (14) of the guide housing (6), through which slot the brush wire (10) extending from the contact brush (10) continues outwards to the holding means (12), and in that the brush wire is attached directly to a live contact in such a way that no more additional contact points are required.
  2. Brush holder according to claim 1, characterised in that the holding means (12) interacts in a clamping manner with the brush wire (10).
  3. Brush holder according to claim 2, characterised in that the holding means (12) is formed in such a way that the brush wire (10) can be clamped therein without tools.
  4. Brush holder according to either claim 2 or claim 3, characterised in that the holding means (12) has an open-edged clamping aperture (18).
  5. Brush holder according to claim 4, characterised in that the clamping aperture (18) narrows in the insertion direction.
  6. Brush holder according to claim 5, characterised in that the clamping aperture (18) widens again slightly after the narrowing portion.
  7. Brush holder according to claim 4, 5 or 6, characterised in that at least a portion of the clamping aperture has a round clear cross-sectional area.
  8. Brush holder according to one or more of the preceding claims, characterised in that the holding means (12) extends away from the guide housing (6) transverse to the direction of longitudinal displacement (20) of the contact brush (10).
  9. Brush holder according to one or more of the preceding claims, characterised in that the free end of the holding means (12) receives the wire brush (10) in a fixing manner.
  10. Brush holder according to one or more of the preceding claims, characterised in that the holding means (12) is formed in one piece with the guide housing (6).
  11. Brush holder according to one or more of the preceding claims, characterised in that the guide housing (6) further comprises supports for a spring means (24), which supports are formed in one piece with the guide housing (6) or are attached to the guide housing (6).
  12. Brush holder according to one or more of the preceding claims, in the form of an assembly (4) which can be pre-assembled for a power tool, consisting of a guide housing (6) with a holding means (12), a contact brush (8) placed therein with brush wire (10) leading to the holding means (12), and a brush spring (24) which loads the contact brush (8).
  13. Power tool with an electric motor which comprises a commutator, characterised by a brush holder (2) according to one or more of the preceding claims.
EP05025221A 2005-11-18 2005-11-18 Brush holder for electrical toll motor Not-in-force EP1788670B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT05025221T ATE412997T1 (en) 2005-11-18 2005-11-18 BRUSH HOLDER FOR ELECTRIC MOTOR OF A TOOL
DE502005005826T DE502005005826D1 (en) 2005-11-18 2005-11-18 Brush holder for electric motor of a power tool
EP05025221A EP1788670B1 (en) 2005-11-18 2005-11-18 Brush holder for electrical toll motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05025221A EP1788670B1 (en) 2005-11-18 2005-11-18 Brush holder for electrical toll motor

Publications (2)

Publication Number Publication Date
EP1788670A1 EP1788670A1 (en) 2007-05-23
EP1788670B1 true EP1788670B1 (en) 2008-10-29

Family

ID=36090767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05025221A Not-in-force EP1788670B1 (en) 2005-11-18 2005-11-18 Brush holder for electrical toll motor

Country Status (3)

Country Link
EP (1) EP1788670B1 (en)
AT (1) ATE412997T1 (en)
DE (1) DE502005005826D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012102810A1 (en) * 2012-03-30 2013-10-10 Valeo Wischersysteme Gmbh Windscreen wiper motor and coal plate for a windscreen wiper motor
FR2996369B1 (en) 2012-09-28 2016-06-03 Valeo Equip Electr Moteur A BROOM CAGE FOR AN ELECTRIC MACHINE BRUSH HOLDER AND A CORRESPONDING BRUSH HOLDER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726894A1 (en) * 1986-08-13 1988-02-18 Schunk Motorensysteme Holder for a carbon brush
JPH0732568B2 (en) 1989-05-16 1995-04-10 アスモ株式会社 Motor brush holding structure
DE4307451A1 (en) 1993-03-10 1994-09-15 Bosch Gmbh Robert Brush holder for mechanically commutated electric motors
DE19717186A1 (en) * 1997-04-24 1998-10-29 Schunk Motorensysteme Holder for a carbon brush
DE10126677A1 (en) * 2001-06-01 2002-12-05 Bosch Gmbh Robert Electric commutating machine has brush enclosure with electrical contact plate for connecting e.g. brush strand

Also Published As

Publication number Publication date
EP1788670A1 (en) 2007-05-23
ATE412997T1 (en) 2008-11-15
DE502005005826D1 (en) 2008-12-11

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