EP0719466B1 - Brush holder - Google Patents

Brush holder Download PDF

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Publication number
EP0719466B1
EP0719466B1 EP94927544A EP94927544A EP0719466B1 EP 0719466 B1 EP0719466 B1 EP 0719466B1 EP 94927544 A EP94927544 A EP 94927544A EP 94927544 A EP94927544 A EP 94927544A EP 0719466 B1 EP0719466 B1 EP 0719466B1
Authority
EP
European Patent Office
Prior art keywords
brush
box
brush box
receptacle
feature
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.)
Expired - Lifetime
Application number
EP94927544A
Other languages
German (de)
French (fr)
Other versions
EP0719466A1 (en
Inventor
Jürgen Bormann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP94927544A priority Critical patent/EP0719466B1/en
Publication of EP0719466A1 publication Critical patent/EP0719466A1/en
Application granted granted Critical
Publication of EP0719466B1 publication Critical patent/EP0719466B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a brush holder according to claim 1.
  • Such brush holders are particularly intended for use in low-noise commutator motor drives, in which to minimize operational vibration accelerations, the brush holding and guiding brush boxes as firmly as possible to a large mass of the motor with the interposition of a plastic -Isolating carrier to be coupled as a brush box holder.
  • the brush boxes which are usually formed from metal as a stamped and bent part and are therefore subject to tolerances, are accommodated by an enclosing cavity of the plastic carrier, fine machining processes to compensate for the fit with excessive tolerances are generally necessary before final assembly. If the plastic carrier is made in two parts in such a way that the brush boxes can first be inserted into a semi-mold and then pressed tightly by means of a second closing carrier part, there is a risk of inadmissible deformation of the brush boxes with excessive tolerances.
  • a tolerance-bridging spring press fit of the brush box in the plastic carrier receptacle can be achieved and, on the other hand, safe, minimal guiding play of the brushes in the brush boxes is ensured will.
  • the elastic deformability of the areas of the brush boxes responsible for the spring action is advantageously achieved by punching out or punching out weak points in the brush box walls acting as elastic heels in the area between the brush box surfaces guaranteeing the guidance of the brush on the one hand and the pressing of the brush boxes in reached the receiving of the plastic carrier pressure surfaces on the other hand.
  • FIG. 1 shows in cross section a brush box 2 according to the invention, in which an essentially rectangular brush 3 is held in a guided manner.
  • the brush box is punched from a sheet metal and is rolled into a closed box, the longitudinal edges of which lie in front of one another in the region of the transverse side faces 3.4 of the brush 3 and are preferably interlocked with one another by dovetail-like connections.
  • the brush box 2 preferably in the region of the longitudinal side surfaces 3.1; 3.2 of the brush, has contact surface shoulders 2.5; 2.6 spaced apart therefrom in such a way that the brush box 2, when pressed into a receptacle 1.1, is preferably designed as a plastic carrier and on the end shield 4 of a collector motor attachable brush plate 1 in the area of their pressure surfaces 1.11; 1.12 can be fixed in the press fit with elastic deformation .; for this purpose the pressure surface shoulders 2.5; 2.6 of the brush box 2 are shaped with a corresponding oversize a relative to the width of the receptacle 1.1 of the brush plate 1.
  • the size of the pressing force is essentially determined by the oversize a of the fit and the section modulus of the sheet cross-section of the brush box 2, for its elastic deformability according to an embodiment of the invention above and below the pressure surface paragraphs 2.5; 2.6 elastic paragraphs 2.1-2.4 in the opposite Side surfaces of the brush box 2 are provided.
  • the elastic shoulders 2.1-2.4 become particularly simple in the manufacture of the brush box 2 due to weak points in the form of punched-out openings 2.7 according to FIG. 6 or punched-in notches 2.8 reached according to FIG 7; the punched out or punched-in weak points are preferably in the area between the pressure surface paragraphs 2.5; 2.6 on the one hand and the rest of the part of the brush box 2; serving in particular for guiding the long side surfaces 3.1; in the area of the narrower transverse side surfaces 3.3; 3.4, the brush box 2 lies essentially over the entire surface with guide play.
  • a spring characteristic of the receptacle 1.1 of the brush plate 1 can be dispensed with, and the brush plate 1 can thus be made rigid.
  • the receptacle 1.1 is U-shaped with an in the axial direction of the motor and thus essentially perpendicular to the bearing plate L receiving the brush plate 1, such that the brush box 2 is similar to the rest of the brush body 2 in the case of an axial surface mounting, preferably to be accomplished by manipulators assembling motor components in the axial direction and can be fixed in the receptacle 1.1.
  • fixing hooks 2.9 can be punched and laterally bent onto the spaced-apart long sides of the brush box 2, which hooks 2 are pressed into corresponding receptacles when the brush box 2 is pressed into the receptacle 1.1 1.2 engage the brush plate 1.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

For the simple fitting of a low-noise brush box (2) which can be elastically pressed into a seat (1.1) in a brush box holder (1), at least one side surface of the brush box (2) has an elastic shoulder (2.1-2.4) at a distance from the neighbouring side of the inserted brush (3) but pressing against the seat (1.1) in such a way that the brush box (2) can be secured in the seat (1.1) without adverse effect on the guide for the brush (3).

Description

Die Erfindung bezieht sich auf eine Bürstenhalterung gemäß Anspruch 1. Derartige Burstenhalterungen sind insbesondere zum Einsatz für geräuscharme Kommutatormotor-Antriebe vorgesehen, bei denen zur Minimierung von betriebsmäßigen Schwingbeschleunigungen die die Bürsten haltenden und führenden Bürstenkästen möglichst fest an eine große Masse des Motors unter Zwischenschaltung eines Kunststoff-Isolierträgers als Bürstenkastenhalterung zu koppeln sind.The invention relates to a brush holder according to claim 1. Such brush holders are particularly intended for use in low-noise commutator motor drives, in which to minimize operational vibration accelerations, the brush holding and guiding brush boxes as firmly as possible to a large mass of the motor with the interposition of a plastic -Isolating carrier to be coupled as a brush box holder.

Werden die üblicherweise aus Metall als Stanzbiegeteil geformten und dadurch mit Toleranzen behafteten Bürstenkästen von einem umschließenden Hohlraum des Kunststoffträgers aufgenommen, so sind in der Regel vor einer endgültigen Montage Fein-Bearbeitungsvorgange zum Passungsausgleich bei übermäßigen Toleranzen notwendig. Werden die Kunststoffträger zweiteilig derart ausgeführt, daß die Bürstenkästen zunächst in eine Halbform einlegbar und dann durch Gegenlage eines zweiten verschließenden Trägerteils festpreßbar sind, so besteht die Gefahr einer unzulässigen Verformung der Bürstenkästen bei übermäßigen Toleranzen.If the brush boxes, which are usually formed from metal as a stamped and bent part and are therefore subject to tolerances, are accommodated by an enclosing cavity of the plastic carrier, fine machining processes to compensate for the fit with excessive tolerances are generally necessary before final assembly. If the plastic carrier is made in two parts in such a way that the brush boxes can first be inserted into a semi-mold and then pressed tightly by means of a second closing carrier part, there is a risk of inadmissible deformation of the brush boxes with excessive tolerances.

Es ist daher Aufgabe der Erfindung, trotz fertigungs- und montagetechnischer Vereinfachung bei als Massenartikel gefertigten Bürstenhalterungen ohne Notwendigkeit einer Nachbearbeitung zum Ausgleich von übermäßigen Toleranzen die betriebsmäßigen Bürstengeräusche durch enge Ankopplung der Bürstenkästen an die Masse des Motors zu minimieren.It is therefore an object of the invention to minimize the operational brush noise by closely coupling the brush boxes to the mass of the motor in spite of the simplification of manufacturing and assembly technology in the case of brush holders manufactured as mass-produced articles without the need for post-processing to compensate for excessive tolerances.

Die Lösung dieser Aufgabe gelingt erfindungsgemäß durch die Lehre des Anspruchs 1; vorteilhafte Ausgestaltungen der Erfindung sind jeweils Gegenstand der Unteransprüche.This object is achieved according to the invention by the teaching of claim 1; advantageous embodiments of the invention are the subject of the dependent claims.

Durch die Unterteilung der Bürstenkästen in einen elastisch verformbaren Teil einerseits und einen davon unbeeinflußten, die Bürste führenden Teil andererseits kann ein Toleranzen überbrückender Federpreßsitz des Bürstenkastens in der Kunststofftrager-Aufnahme erreicht und andererseits eine sichere, mit minimalem Führungsspiel behaftete Führung der Bürsten in den Bürstenkästen gewährleistet werden. Die elastische Verformbarkeit der für die Federwirkung verantwortlichen Bereiche der Bürstenkästen wird in vorteilhafter Weise durch aus- bzw. eingestanzte, als elastische Absätze wirkende Schwachstellen in den Bürstenkastenwandungen im Bereich zwischen den die Führung der Bürste gewährleistenden Bürstenkasten-Flächen einerseits und den die Preßung der Bürstenkästen in der Aufnahme des Kunststoffträgers übernehmenden Andruckflächen andererseits erreicht.By dividing the brush boxes into an elastically deformable part on the one hand and an uninfluenced part that guides the brush on the other hand, a tolerance-bridging spring press fit of the brush box in the plastic carrier receptacle can be achieved and, on the other hand, safe, minimal guiding play of the brushes in the brush boxes is ensured will. The elastic deformability of the areas of the brush boxes responsible for the spring action is advantageously achieved by punching out or punching out weak points in the brush box walls acting as elastic heels in the area between the brush box surfaces guaranteeing the guidance of the brush on the one hand and the pressing of the brush boxes in reached the receiving of the plastic carrier pressure surfaces on the other hand.

Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung werden im folgenden anhand schematisch dargestellter Ausführungsbeispiele in der Zeichnung näher erläutert; darin zeigen:

FIG 1
einen Querschnitt durch einen erfindungsgemäßen elastisch verformbaren Bürstenkasten mit darin geführter Bürste,
FIG 2
die Aufnahme für den Bürstenkasten gemäß FIG 1 in einer an einem Lagerschild befestigten Kunststoff-Bürstenkastenhalterung,
FIG 3
den Bürstenkasten gemäß FIG 1 vor seiner Preßsitz-Verformung,
FIG 4
den Bürstenkasten gemäß FIG 3 nach einer Preßsitz-Verformung,
FIG 5
den Bürstenkasten gemäß FIG 1 mit zusätzlich angeformten Fixierungshaken zur formschlüssigen Fixierung in der Bürstenkastenhalterung,
FIG 6
die Längs-Draufsicht auf einen Bürstenkasten gemäß FIG 1,
FIG 7
eine zu FIG 1 alternative Ausführung eines Bürstenkasten.
The invention and further advantageous embodiments of the invention are explained in more detail below with reference to schematically illustrated exemplary embodiments in the drawing; show in it:
FIG. 1
3 shows a cross section through an elastically deformable brush box according to the invention with a brush guided therein,
FIG 2
the receptacle for the brush box according to FIG 1 in a plastic brush box holder attached to a bearing plate,
FIG 3
the brush box according to FIG 1 before its press fit deformation,
FIG 4
the brush box according to FIG 3 after a press fit deformation,
FIG 5
1 with additional molded-on fixing hooks for positive locking in the brush box holder,
FIG 6
the longitudinal top view of a brush box according to FIG 1,
FIG 7
an alternative to FIG 1 embodiment of a brush box.

FIG 1 zeigt im Querschnitt einen erfindungsgemäßen Bürstenkasten 2, in dem eine, im wesentlichen rechteckförmige Bürste 3 geführt gehalten ist. Der Bürstenkasten ist als Stanzbiegeteil aus einem Blech gestanzt und zu einem geschlossenen Kasten gerollt ist, dessen Längskanten im Bereich der einen Quer-Seitenflachen 3.4 der Bürste 3 voreinanderliegen und vorzugsweise durch schwalbenschwanzartige Verbindungen miteinander verklinkt sind.1 shows in cross section a brush box 2 according to the invention, in which an essentially rectangular brush 3 is held in a guided manner. The brush box is punched from a sheet metal and is rolled into a closed box, the longitudinal edges of which lie in front of one another in the region of the transverse side faces 3.4 of the brush 3 and are preferably interlocked with one another by dovetail-like connections.

Erfindungsgemäß weist der Bürsten-Kasten 2, vorzugsweise im Bereich der Längs-Seitenflächen 3.1;3.2 der Bürste derart zu diesen beabstandete Andruckflächen-Absätze 2.5;2.6 auf, daß der Bürstenkasten 2 beim Eindrücken in eine Aufnahme 1.1 einer vorzugsweise als Kunststoffträger ausgebildeten und am Lagerschild 4 eines Kollektormotors befestigbaren Bürstenplatte 1 im Bereich derer Andruckflächen 1.11;1.12 unter elastischer Verformung im Preßsitz fixierbar ist.; dazu sind die Andruckflächen-Absätze 2.5;2.6 des Bürstenkastens 2 mit einen entsprechenden Übermaß a relativ zur Weite der Aufnahme 1.1 der Bürstenplatte 1 herausgeformt. Die Größe der Preßkraft wird im wesentlichen durch das Übermaß a der Passung und das Widerstandsmoment des Blechquerschnittes des Bürstenkastens 2 bestimmt, für dessen elastische Verformbarkeit nach einer Ausgestaltung der Erfindung oberhalb und unterhalb der Andruckflächen-Absätze 2.5;2.6 elastische Absätze 2.1-2.4 in den gegenüberliegenden Seitenflächen des Bürstenkastens 2 vorgesehen sind.According to the invention, the brush box 2, preferably in the region of the longitudinal side surfaces 3.1; 3.2 of the brush, has contact surface shoulders 2.5; 2.6 spaced apart therefrom in such a way that the brush box 2, when pressed into a receptacle 1.1, is preferably designed as a plastic carrier and on the end shield 4 of a collector motor attachable brush plate 1 in the area of their pressure surfaces 1.11; 1.12 can be fixed in the press fit with elastic deformation .; for this purpose the pressure surface shoulders 2.5; 2.6 of the brush box 2 are shaped with a corresponding oversize a relative to the width of the receptacle 1.1 of the brush plate 1. The size of the pressing force is essentially determined by the oversize a of the fit and the section modulus of the sheet cross-section of the brush box 2, for its elastic deformability according to an embodiment of the invention above and below the pressure surface paragraphs 2.5; 2.6 elastic paragraphs 2.1-2.4 in the opposite Side surfaces of the brush box 2 are provided.

Fertigungstechnisch besonders einfach werden die elastischen Absätze 2.1-2.4 bei der Herstellung des Bürstenkastens 2 durch Schwachstellen in Form von ausgestanzten Durchbrechungen 2.7 gemäß FIG 6 bzw. eingestanzten Kerben 2.8 gemäß FIG 7 erreicht; dabei liegen die ausgestanzten bzw. eingestanzten Schwachstellen vorzugsweise im Bereich zwischen den Andruckflächen-Absätzen 2.5;2.6 einerseits und dem übrigen, insbesondere zur Führung der Langsseitenflächen 3.1;3.2 der Bürste 3 dienenden Teil des Bürstenkastens 2; im Bereich der schmaleren Querseitenflächen 3.3;3.4 liegt der Bürstenkasten 2 im wesentlich über die gesamte Fläche mit Führungsspiel an.In terms of production technology, the elastic shoulders 2.1-2.4 become particularly simple in the manufacture of the brush box 2 due to weak points in the form of punched-out openings 2.7 according to FIG. 6 or punched-in notches 2.8 reached according to FIG 7; the punched out or punched-in weak points are preferably in the area between the pressure surface paragraphs 2.5; 2.6 on the one hand and the rest of the part of the brush box 2; serving in particular for guiding the long side surfaces 3.1; in the area of the narrower transverse side surfaces 3.3; 3.4, the brush box 2 lies essentially over the entire surface with guide play.

Es dürfte ersichtlich sein, daß die derart erfindungsgemäße Ausgestaltung der Bürstenkästen die elastische Verformung des Blechquerschnittes die Bürstenführung der Bürste 3 in dem Bürstenkasten 2 unbeeinflußt bleibt und somit ein hinreichendes Bürstenspiel zur Führung der Bürste 3 gewährleistet ist.It should be apparent that the inventive design of the brush boxes, the elastic deformation of the sheet cross-section, the brush guide of the brush 3 in the brush box 2 remains unaffected and thus an adequate brush play for guiding the brush 3 is guaranteed.

Durch die erfindungsgemäße Verformbarkeit der Bürstenkästen 2 kann auf eine Federeigenschaft der Aufnahme 1.1 der Bürstenplatte 1 verzichtet werden und diese somit starr ausgeführt sein. Vorzugsweise ist die Aufnahme 1.1 U-förmig mit einer in Achsrichtung des Motors und somit im wesentlichen senkrecht zu dem die Bürstenplatte 1 aufnehmenden Lagerschild L ausgebildet, derart daß bei einer, vorzugsweise durch Manipulatoren zu bewerkstelligenden, axialen Aufbaumontage der Bürstenkasten 2 ähnlich wie die übrigen zu montierenden Motorbauteile in axialer Richtung zuführbar und in der Aufnahme 1.1 fixierbar ist. Zur zusätzlichen formschlüssigen Sicherung des Bürstenkastens 2 in der Aufnahme 1 in Richtung auf den Kommutator können gemäß FIG 5,6 an die beabstandeten Längsseiten des Bürstenkastens 2 Fixierungshaken 2.9 angestanzt und seitlich abgebogen werden, die beim Eindrücken des Bürstenkastens 2 in die Aufnahme 1.1 in korrespondierende Fixierungsöffnungen 1.2 der Bürstenplatte 1 einrasten.Due to the deformability of the brush boxes 2 according to the invention, a spring characteristic of the receptacle 1.1 of the brush plate 1 can be dispensed with, and the brush plate 1 can thus be made rigid. Preferably, the receptacle 1.1 is U-shaped with an in the axial direction of the motor and thus essentially perpendicular to the bearing plate L receiving the brush plate 1, such that the brush box 2 is similar to the rest of the brush body 2 in the case of an axial surface mounting, preferably to be accomplished by manipulators assembling motor components in the axial direction and can be fixed in the receptacle 1.1. For additional positive locking of the brush box 2 in the receptacle 1 in the direction of the commutator, as shown in FIG. 5, 6, fixing hooks 2.9 can be punched and laterally bent onto the spaced-apart long sides of the brush box 2, which hooks 2 are pressed into corresponding receptacles when the brush box 2 is pressed into the receptacle 1.1 1.2 engage the brush plate 1.

Claims (10)

  1. Brush holder having a brush box which holds and guides a brush, having the features:
    a) the brush box (2.2), being capable of elastic deformation, is pressed into a receptacle (1.1) in a brush box holder (1),
    b) the brush box (2) guides a brush (3), which is essentially of rectangular cross-section, on its outer side surfaces,
    c) at least one side surface of the brush box (2) has a contact pressure surface step (2.5; 2.6), which is at a distance from the adjacent side surface of the brush (3) but presses against the receptacle (1.1), in such a manner that the brush box (2) can be fixed in the receptacle (1.1) with a push fit, without adversely affecting the guidance of the brush (1).
  2. Brush holder according to Claim 1, having the feature:
    d) the brush box (2) is provided with an elastic step (2.1-2.4) on each of two mutually opposite side surfaces.
  3. Brush holder according to Claim 1 or 2, having the feature:
    e) the brush box (2) is pressed axially into a U-shaped, axially open receptacle (1.1) in a brush plate (1) which is held at right angles to the motor axial direction.
  4. Brush holder according to one of Claims 1-3, having the feature:
    f) the essentially rectangular brush (3) is surrounded on its narrow sides by the brush box (2), for the purpose of guiding in said brush box (2),
    g) the longitudinal sides of the brush box (2) are deformed outwards between their end contacts on the brush (3), in the sense of a contact pressure surface step which is at a distance from the brush (3) but presses against the receptacle (1.1).
  5. Brush holder according to Claim 4, having the feature:
    h) elastic steps (2.1-2.4) are provided in the longitudinal sides of the brush box (2), between the end contacts of said longitudinal sides on the brushes (3) and the contact pressure surface steps (2.5; 2.6) of said longitudinal sides.
  6. Brush holder according to Claim 5, having the feature:
    i) the elastic steps (2.1-2.4) are an integral component of a brush box (2), which is stamped as a stamped and bent part, having weak points (2.7; 2.8) which are stamped out or stamped in in the region of the elastic steps (2.1-2.4), in particular in the transition to the other part of the brush box (2), for the purpose of deliberately minimizing the sheet-metal thickness.
  7. Brush holder according to one of Claims 4-6, having the feature:
    j) the contact pressure surface step (2.5; 2.6) has a non-elastic contact surface which corresponds with the contact pressure surface of the receptacle (1.1) and is preferably planar.
  8. Brush holder according to Claim 7, having the feature:
    k) the contact surface is offset outwards in the form of a step in the direction of the contact pressure surface of the receptacle (1.1).
  9. Brush holder according to one of Claims 1 - 8, having the feature:
    l) the brush box (2) is composed of a rolled sheet-metal/stamped and bent part having contact pressure surface steps (2.5; 2.6) which are formed out, with an oversize fit, in the region of the receptacle (1.1) in the brush box holder (1).
  10. Brush holder according to Claim 9, having the feature:
    m) the longitudinal edges, which are located one in front of the other, of the brush box (2) which is rolled from a stamped sheet-metal part are latched to one another in a positively locking manner by means of dovetail-like joints in the region of the transverse side surfaces (3.3; 3.4) of the guided brush (3).
EP94927544A 1993-09-15 1994-09-02 Brush holder Expired - Lifetime EP0719466B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94927544A EP0719466B1 (en) 1993-09-15 1994-09-02 Brush holder

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP93114882 1993-09-15
EP93114882 1993-09-15
PCT/EP1994/002923 WO1995008205A1 (en) 1993-09-15 1994-09-02 Brush holder
EP94927544A EP0719466B1 (en) 1993-09-15 1994-09-02 Brush holder

Publications (2)

Publication Number Publication Date
EP0719466A1 EP0719466A1 (en) 1996-07-03
EP0719466B1 true EP0719466B1 (en) 1997-01-29

Family

ID=8213270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94927544A Expired - Lifetime EP0719466B1 (en) 1993-09-15 1994-09-02 Brush holder

Country Status (6)

Country Link
EP (1) EP0719466B1 (en)
CZ (1) CZ285974B6 (en)
DE (1) DE59401737D1 (en)
SK (1) SK282560B6 (en)
TR (1) TR28171A (en)
WO (1) WO1995008205A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054537A1 (en) * 2000-11-03 2002-06-06 Hoffmann & Co Elektrokohle Ag Brush arrangement for electric motors
DE10248992A1 (en) * 2002-10-21 2004-04-29 BSH Bosch und Siemens Hausgeräte GmbH Method and device for producing a brush arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902881C (en) * 1938-11-20 1954-01-28 Siemens Ag Brush guide with pressed fabric cover
DE3220877A1 (en) * 1982-06-03 1983-12-08 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal BRUSH HOLDER ON ELECTRIC MOTORS EQUIPPED WITH EMISSION CONTROLLER, IN PARTICULAR FOR HOUSEHOLD APPLIANCES LIKE VACUUM CLEANERS OR THE LIKE
DD277567A1 (en) * 1988-11-30 1990-04-04 Elektrogeraete Ingbuero Veb ARRANGEMENT FOR THE PRODUCTION OF ELECTRICAL CONNECTIONS IN A SMALL POWER ELECTRIC MOTOR

Also Published As

Publication number Publication date
WO1995008205A1 (en) 1995-03-23
CZ285974B6 (en) 1999-12-15
TR28171A (en) 1996-02-29
SK35096A3 (en) 1997-02-05
DE59401737D1 (en) 1997-03-13
SK282560B6 (en) 2002-10-08
EP0719466A1 (en) 1996-07-03
CZ72096A3 (en) 1996-06-12

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