EP1675226A2 - Brush base plate having brush alignment device of sheet metal - Google Patents

Brush base plate having brush alignment device of sheet metal Download PDF

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Publication number
EP1675226A2
EP1675226A2 EP05111785A EP05111785A EP1675226A2 EP 1675226 A2 EP1675226 A2 EP 1675226A2 EP 05111785 A EP05111785 A EP 05111785A EP 05111785 A EP05111785 A EP 05111785A EP 1675226 A2 EP1675226 A2 EP 1675226A2
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EP
European Patent Office
Prior art keywords
brush
sheet metal
base plate
guide
brush base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05111785A
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German (de)
French (fr)
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EP1675226A3 (en
Inventor
Georg Braml
Ralph Abel
Helmut Burger
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Hilti AG
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Hilti AG
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Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1675226A2 publication Critical patent/EP1675226A2/en
Publication of EP1675226A3 publication Critical patent/EP1675226A3/en
Withdrawn legal-status Critical Current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
    • H01R39/385—Means for mechanical fixation of the brush holder

Definitions

  • the invention relates to a brush base plate for a universal motor with brush guide plates for the carbon brushes.
  • U-shaped brush guide plates are mounted on the brush base plate for guiding the sliding brushes, which are respectively formed suitable for the associated commutator diameter and the brush cross section used.
  • U-shaped brush guide plate are fastened by means of flat-lying sheet metal flanges through screws or rivets passing through mounting holes.
  • the solution requires a multitude of components and assembly steps due to the screws / rivets.
  • an uncuted U-shaped guide plate is mounted in suitably spaced mounting holes of the brush base plate.
  • the object is a realization of a brush base plate with at least one further assembly component, which can be used with two different commutator diameters.
  • a brush base plate for a universal motor with radially adapted to the radial guidance for the carbon brushes
  • U-shaped brush guide plates staggered sheet metal feet whose topology is twofold rotationally symmetrical to each other and which are respectively inserted through appropriately associated mounting holes of the brush base plate, wherein at least two sheet metal feet are each spaced differently spaced with respect to their associated next leading end side of the brush guide plate.
  • the brush base plate and the brush guide plates depending arranged a bottom plate with the sheet metal feet appropriately associated bottom holes through which the sheet metal feet are inserted, whereby the carbon brushes are guided on all four sides along the guide direction wear.
  • At least one sheet metal foot of the brush guide plate with respect to the guide direction asymmetrically widened foot on which at least two bottom holes are assigned in the bottom plate fitting, which depending on the choice of the guide direction of the brush guide plate with a single bottom plate two different relative positions to each other are possible, which also conveniently fits the Commutator diameter are selected.
  • a brush base plate for a universal motor with the radial guide for the carbon brushes suitably formed U-shaped brush guide plates with sheet metal feet, which are respectively inserted through appropriately associated mounting holes of the brush base plate, respectively arranged between the brush base plate and the brush guide plates bottom plates with bottom holes through which the Sheet metal feet are inserted through, wherein at least one sheet metal foot of the brush guide plate has a respect to the guide direction widened foot head, which is associated with at least one bottom hole in the bottom plate fitting.
  • the widened foot is offset with respect to the guide direction, the relative Offset position of the bottom plate to the brush guide plate, in particular the distance between two radially opposite inner bottom end sides, which is assigned to the commutator diameter of the male rotor fitting.
  • At least one mounting hole of the brush base plate along the guide direction is sunk on the mounting side expanded, whereby the widened foot can be at least partially sunk into the brush base plate.
  • the U-shaped brush guide plate is executed cranked in the width perpendicular to the guide direction in the foot area, whereby the sheet metal feet or mounting holes and optional bottom holes are further spaced than required for leading to brush cross section, resulting in a production range of universal motors with different brush cross sections other brush cross-section only on the variation of this crank and thus on the brush guide plate but not on the brush base plate and the bottom plates affects, whereby the required variety of different mounting components is further reduced.
  • annular disk-shaped brush base plate 1 for an indicated rotating universal motor commutator 2 of a small commutator diameter K for radial guidance of the two indicated carbon brushes 3 along a guide direction F suitably formed brush guide plates 4, which are arranged at a radial distance D from each other, which is slightly larger as the diameter K of the universal motor commutator 2 is.
  • bottom plates 7 are available.
  • the U-shaped brush guide plate 4 in the foot region 12 near the sheet metal feet 5 on a perpendicular to the guide direction F (Fig. La) oriented width B is bent expanding.
  • the four sheet metal feet 5 of the brush guide plate 4 are inserted through the matingly associated mounting holes 6 of the brush base plate 1 and bent for attachment to the inside around beads 9 of the brush base plate around.
  • the bottom plate 7 is arranged with the sheet metal feet 5 suitably associated bottom holes 8 through which the sheet metal feet 5 are also inserted therethrough.
  • the sheet metal feet 5 with respect to their associated next leading end sides 11a, 11b of the brush guide plate 4 are arranged at different distances at a distance Xa, Xb.
  • the sheet metal feet 5 in this case have an asymmetrically widened foot head 10 with respect to the guide direction F, to which the matching bottom holes 8 in the floor panel 7 are assigned.
  • the four mounting holes 6 of the brush base plate 1 are on both sides along the guide direction F on the mounting side sunk expanded and take in each case partially the foot 10 of the inserted through sheet metal feet 5 in itself.
  • suitable orientation of both the brush guide plates 4 and the bottom plates 7 with respect to the guide direction F would be slightly larger than the diameter K of the universal motor commutator 2 realized during assembly of the radial distance D.
  • annular disk-shaped brush base plate 1 for an indicated rotating universal motor commutator 2 'of a large commutator diameter K' to Radial guidance of the two indicated carbon brushes 3 along a guide direction F suitably formed brush guide plates 4 ', which are arranged at a radial distance D' from each other, which is slightly larger than the diameter K 'of the universal motor commutator 2'.
  • bottom plates 7 are available.
  • the U-shaped brush guide plate 4 'in the foot area 12 near the sheet metal feet 5 un-cranked.
  • the four sheet metal feet 5 of the brush guide plate 4 ' are inserted through the matingly associated mounting holes 6 of the brush base plate 1 and bent for attachment to the inside around beads 9 of the brush base plate around.
  • the bottom plate 7 is arranged with the sheet metal feet 5 suitably associated bottom holes 8, through which the sheet metal feet 5 are also inserted therethrough.
  • the sheet metal feet 5 have a respect to the guide direction F asymmetrically widened foot 10 ', which are associated with the matching bottom holes 8 in the bottom plate 7.
  • the four mounting holes 6 of the brush base plate 1 are on both sides along the guide direction F on the mounting side sunk expands and take in each case partially the foot 10 'of the inserted through sheet metal feet 5 in itself.
  • alternatively trained brush guide plates 4 with differently along the guide direction F differently offset foot 10 would be slightly smaller than the diameter K 'of the universal motor commutator 2' realized during assembly of the radial distance D.
  • the identical brush base plate 1 with identical bottom plates 7 would also be suitable for the smaller diameter K of a further universal motor commutator 2 (only partially indicated).

Landscapes

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

Abstract

The brush baseplate has a radial guidance for carbon brush conductors (3) and U-shaped brush guidance sheet metals (4) provided by radially shifted sheet metal feet (5), whose topology to each other is rotationally symmetric and placed through suitably assigned assembly holes (6). Two sheet metal feet (5) are separated from their assigned next guidance final side of the brush guidance sheet metal (4). Between base plate and the brush guidance sheet metals (4), a floor plate is arranged with the sheet metal feet (5) and has holes (8), through which the sheet metal feet (5) can be inserted.

Description

Die Erfindung betrifft eine Bürstengrundplatte für einen Universalmotor mit Bürstenführungsblechen für die Kohlebürsten.The invention relates to a brush base plate for a universal motor with brush guide plates for the carbon brushes.

Bei Universalmotoren sind auf der Bürstengrundplatte zur Führung der verschiebbaren Kohlebürsten üblicherweise U-förmige Bürstenführungsbleche montiert, die für den zugeordneten Kommutatordurchmesser und den verwendete Bürstenquerschnitt jeweils passend geformt sind.In universal motors usually U-shaped brush guide plates are mounted on the brush base plate for guiding the sliding brushes, which are respectively formed suitable for the associated commutator diameter and the brush cross section used.

Nach der US1693322 und der US2851622 werden ein U-förmiges Bürstenführungsblech mittels flach aufliegenden Blechflanschen über durch Montagelöcher hindurch greifende Schrauben bzw. Nieten befestigt. Lösung benötigt durch die Schrauben/Nieten eine Vielzahl von Bauteilen und Montageschritten.According to US1693322 and US2851622 a U-shaped brush guide plate are fastened by means of flat-lying sheet metal flanges through screws or rivets passing through mounting holes. The solution requires a multitude of components and assembly steps due to the screws / rivets.

Nach der DD278676 wird ein ungekröpftes U-förmiges Führungsblech in passend beabstandeten Montagelöchern der Bürstengrundplatte befestigt.According to DD278676, an uncuted U-shaped guide plate is mounted in suitably spaced mounting holes of the brush base plate.

Nach der DE3149099 weist ein U-förmiges Bürstenführungsblech flanschartig flach aufliegend geköpfte Blechfüsse auf, die zudem durch Montagelöcher gesteckt werden. Eine spezielle Faltung des Führungsblechs kann zudem eine Bodenfläche des U-förmigen Führungsblechs ausbilden. Derartige Lösungen eignen sich nur für genau einen Kommutatordurchmesser.According to DE3149099, a U-shaped brush guide plate on flange flat-headed beheaded sheet metal feet, which are also plugged through mounting holes. A special fold of the guide plate can also form a bottom surface of the U-shaped guide plate. Such solutions are only suitable for exactly one commutator diameter.

Die Aufgabe besteht in einer Realisierung einer Bürstengrundplatte mit zumindest einem weiteren Montagebauteil, welche bei zwei unterschiedlichen Kommutatordurchmessern verwendbar sind.The object is a realization of a brush base plate with at least one further assembly component, which can be used with two different commutator diameters.

Die Aufgabe wird im Wesentlichen durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is essentially achieved by the features of the independent claims. Advantageous developments emerge from the subclaims.

So weist eine Bürstengrundplatte für einen Universalmotor mit zur radialen Führung für die Kohlebürsten passend ausgebildeten U-förmigen Bürstenführungsblechen mit radial versetzten Blechfüssen, deren Topologie zueinander zweizählig rotationssymmetrisch ist und die jeweils durch passend zugeordnete Montagelöcher der Bürstengrundplatte hindurchgesteckt sind, wobei zumindest zwei Blechfüsse jeweils bezüglich ihrer zugeordnet nächsten Führungsendseite des Bürstenführungsbleches unterschiedlich weit beabstandet sind.Thus, a brush base plate for a universal motor with radially adapted to the radial guidance for the carbon brushes U-shaped brush guide plates staggered sheet metal feet whose topology is twofold rotationally symmetrical to each other and which are respectively inserted through appropriately associated mounting holes of the brush base plate, wherein at least two sheet metal feet are each spaced differently spaced with respect to their associated next leading end side of the brush guide plate.

Durch die bezüglich der Führungsendseiten des Bürstenführungsbleches unterschiedlich weit beabstandet angeordneten Blechfüsse ist bei dem Abstand zu den Führungsendseiten insbesondere keine zweizählige Rotationssymmetrie gegeben, wodurch bezüglich einer alternativen Montage der Bürstenführungsbleche in die Montagelöcher der gleichen Bürstengrundplatte mit vorheriger Halbdrehung der Führungsrichtung die radiale Position der Führungsendseiten geändert wird, insbesondere der Abstand zweier radial gegenüberliegender innerer Führungsendseiten, der dem Kommutatordurchmesser des aufzunehmenden Rotors passend zugeordnet ist. Somit ist in einem Fertigungssortiment von Universalmotoren unterschiedlichen Kommutatordurchmesserns die erforderliche Vielfalt an verschiedenen Montagebauteilen verringert.By the respect to the leading end sides of the brush guide plate spaced differently arranged sheet metal feet in particular no twofold rotational symmetry is given at the distance to the leading end sides, which is changed with respect to an alternative mounting of the brush guide plates in the mounting holes of the same brush base plate with previous half turn of the guide direction, the radial position of the leading end pages , In particular, the distance between two radially opposite inner leading end sides, which is assigned to the commutator diameter of the male rotor fitting. Thus, in a manufacturing assortment of universal motors of different commutator diameters, the required variety of different mounting components is reduced.

Vorteilhaft ist zwischen der Bürstengrundplatte und den Bürstenführungsblechen je ein Bodenblech mit den Blechfüssen passend zugeordneten Bodenlöchern angeordnet, durch welche die Blechfüsse hindurchgesteckt sind, wodurch die Kohlebürsten an allen vier Seiten längs der Führungsrichtung verschleissarm geführt werden.Advantageously, between the brush base plate and the brush guide plates depending arranged a bottom plate with the sheet metal feet appropriately associated bottom holes through which the sheet metal feet are inserted, whereby the carbon brushes are guided on all four sides along the guide direction wear.

Vorteilhaft weist zumindest ein Blechfuss des Bürstenführungsbleches einen bezüglich der Führungsrichtung unsymmetrisch verbreiterten Fusskopf auf, dem zumindest zwei Bodenlöcher im Bodenblech passend zugeordnet sind, wodurch je nach Wahl der Führungsrichtung des Bürstenführungsbleches mit einem einzigen Bodenblech zwei verschiedene Relativlagen zueinander möglich sind, die ebenfalls zweckmässigerweise passend dem Kommutatordurchmesser gewählt sind.Advantageously, at least one sheet metal foot of the brush guide plate with respect to the guide direction asymmetrically widened foot on which at least two bottom holes are assigned in the bottom plate fitting, which depending on the choice of the guide direction of the brush guide plate with a single bottom plate two different relative positions to each other are possible, which also conveniently fits the Commutator diameter are selected.

Alternativ weist eine Bürstengrundplatte für einen Universalmotor mit zur radialen Führung für die Kohlebürsten passend ausgebildeten U-förmigen Bürstenführungsblechen mit Blechfüssen, die jeweils durch passend zugeordnete Montagelöcher der Bürstengrundplatte hindurchgesteckt sind, jeweils zwischen der Bürstengrundplatte und den Bürstenführungsblechen angeordnete Bodenbleche mit Bodenlöchern auf, durch welche die Blechfüsse hindurchgesteckt sind, wobei zumindest ein Blechfuss des Bürstenführungsbleches einen bezüglich der Führungsrichtung verbreiterten Fusskopf aufweist, dem zumindest ein Bodenloch im Bodenblech passend zugeordnet ist.Alternatively, a brush base plate for a universal motor with the radial guide for the carbon brushes suitably formed U-shaped brush guide plates with sheet metal feet, which are respectively inserted through appropriately associated mounting holes of the brush base plate, respectively arranged between the brush base plate and the brush guide plates bottom plates with bottom holes through which the Sheet metal feet are inserted through, wherein at least one sheet metal foot of the brush guide plate has a respect to the guide direction widened foot head, which is associated with at least one bottom hole in the bottom plate fitting.

Durch das zumindest eine Bodenloch im Bodenblech, welches dem bezüglich der Führungsrichtung verbreiterten Fusskopf der Bürstenführungsbleche passend zugeordnet ist, wird bezüglich einer alternativen Montage der gleichen Bürstengrundplatte mit alternativen (statt halb gedrehten) Bürstenführungsblechen, deren verbreiterter Fusskopf bezüglich der Führungsrichtung versetzt ist, auch die relative Lage des Bodenblechs zum Bürstenführungsblech entsprechend versetzt, insbesondere der Abstand zweier radial gegenüberliegender innerer Bodenendseiten, der dem Kommutatordurchmesser des aufzunehmenden Rotors passend zugeordnet ist. Somit ist in einem Fertigungssortiment von Universalmotoren unterschiedlichen Kommutatordurchmessers die erforderliche Vielfalt an verschiedenen Montagebauteilen verringert.Due to the at least one bottom hole in the bottom plate, which is associated with the widened with respect to the guide foothead of the brush guide plates, with respect to an alternative mounting of the same brush base plate with alternative (instead of half-rotated) brush guide plates, the widened foot is offset with respect to the guide direction, the relative Offset position of the bottom plate to the brush guide plate, in particular the distance between two radially opposite inner bottom end sides, which is assigned to the commutator diameter of the male rotor fitting. Thus, the required variety of different mounting components is reduced in a manufacturing range of universal motors of different commutator diameter.

Vorteilhaft ist zumindest ein Montageloch der Bürstengrundplatte längs der Führungsrichtung montageseitig eingesenkt erweitert, wodurch der verbreiterte Fusskopf zumindest teilweise in die Bürstengrundplatte versenkt werden kann.Advantageously, at least one mounting hole of the brush base plate along the guide direction is sunk on the mounting side expanded, whereby the widened foot can be at least partially sunk into the brush base plate.

Vorteilhaft ist das U-förmige Bürstenführungsblech in der Breite senkrecht zur Führungsrichtung im Fussbereich gekröpft ausgeführt, wodurch die Blechfüsse bzw. Montagelöcher und optionale Bodenlöcher weiter beabstandet sind, als für den zu führenden Bürstenquerschnitt erforderlich, wodurch sich in einem Fertigungssortiment von Universalmotoren mit unterschiedlichen Bürstenquerschnitten ein anderer Bürstenquerschnitt nur auf die Variation dieser Kröpfung und somit auf das Bürstenführungsblech aber nicht auf die Bürstengrundplatte und die Bodenbleche auswirkt, wodurch die erforderliche Vielfalt an verschiedenen Montagebauteilen weiter verringert ist.Advantageously, the U-shaped brush guide plate is executed cranked in the width perpendicular to the guide direction in the foot area, whereby the sheet metal feet or mounting holes and optional bottom holes are further spaced than required for leading to brush cross section, resulting in a production range of universal motors with different brush cross sections other brush cross-section only on the variation of this crank and thus on the brush guide plate but not on the brush base plate and the bottom plates affects, whereby the required variety of different mounting components is further reduced.

Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:

  • Fig. 1a als Bürstengrundplatte mit verdrehbar bestückbaren Bürstenführungsblechen
  • Fig. 1 b als Querschnitt der Bürstengrundplatte
  • Fig. 1c als Längsschnitt der Bürstengrundplatte
  • Fig. 2a als Bürstengrundplatte mit alternativ bestückbaren Bürstenführungsblechen
  • Fig. 2b als Querschnitt der Bürstengrundplatte
  • Fig. 2c als Längsschnitt der Bürstengrundplatte
The invention will be explained in more detail with respect to an advantageous embodiment with:
  • Fig. 1a as a brush base plate with rotatably equippable brush guide plates
  • Fig. 1 b as a cross section of the brush base plate
  • Fig. 1c as a longitudinal section of the brush base plate
  • Fig. 2a as a brush base plate with alternatively brush guide plates
  • Fig. 2b as a cross section of the brush base plate
  • Fig. 2c as a longitudinal section of the brush base plate

Nach Fig. 1a weist eine ringscheibenförmige Bürstengrundplatte 1 für einen angedeuteten rotierenden Universalmotorkommutator 2 eines kleinen Kommutatordurchmessers K zur radialen Führung der beiden angedeuteten Kohlebürsten 3 längs einer Führungsrichtung F passend ausgebildete Bürstenführungsbleche 4 auf, die in einen radialen Abstand D voneinander angeordnet sind, der etwas grösser als der Durchmesser K des Universalmotorkommutators 2 ist. Zudem sind jeweils Bodenbleche 7 vorhanden.According to Fig. 1a, an annular disk-shaped brush base plate 1 for an indicated rotating universal motor commutator 2 of a small commutator diameter K for radial guidance of the two indicated carbon brushes 3 along a guide direction F suitably formed brush guide plates 4, which are arranged at a radial distance D from each other, which is slightly larger as the diameter K of the universal motor commutator 2 is. In addition, bottom plates 7 are available.

Nach Fig. 1b ist das U-förmige Bürstenführungsblech 4 im Fussbereich 12 nahe den Blechfüssen 5 auf eine senkrecht zur Führungsrichtung F (Fig. la) orientierte Breite B erweiternd gekröpft. Die vier Blechfüsse 5 des Bürstenführungsbleches 4 sind durch die passend zugeordneten Montagelöcher 6 der Bürstengrundplatte 1 hindurchgesteckt und zur Befestigung nach Innen um Wülste 9 der Bürstengrundplatte herum gebogen. Zwischen der Bürstengrundplatte 1 und dem Bürstenführungsblech 4 ist das Bodenblech 7 mit den Blechfüssen 5 passend zugeordneten Bodenlöchern 8 angeordnet, durch welche die Blechfüsse 5 ebenfalls hindurchgesteckt sind.According to Fig. 1b, the U-shaped brush guide plate 4 in the foot region 12 near the sheet metal feet 5 on a perpendicular to the guide direction F (Fig. La) oriented width B is bent expanding. The four sheet metal feet 5 of the brush guide plate 4 are inserted through the matingly associated mounting holes 6 of the brush base plate 1 and bent for attachment to the inside around beads 9 of the brush base plate around. Between the brush base plate 1 and the brush guide plate 4, the bottom plate 7 is arranged with the sheet metal feet 5 suitably associated bottom holes 8 through which the sheet metal feet 5 are also inserted therethrough.

Nach Fig. 1c sind die Blechfüsse 5 bezüglich ihrer zugeordnet nächsten Führungsendseiten 11a, 11b des Bürstenführungsbleches 4 unterschiedlich weit im Abstand Xa, Xb beabstandet angeordnet. Dabei sind die vier (je zwei verdeckt) zueinander im Rechteck angeordneten Blechfüsse 5 bezüglich einer Halbdrehung in der Führungsrichtung F zueinander zweizählig rotationssymmetrisch angeordnet. Die Blechfüsse 5 weisen dabei einen bezüglich der Führungsrichtung F unsymmetrisch verbreiterten Fusskopf 10 auf, dem die passenden Bodenlöcher 8 im Bodenblech 7 zugeordnet sind. Auch die vier Montagelöcher 6 der Bürstengrundplatte 1 sind beidseitig längs der Führungsrichtung F montageseitig eingesenkt erweitert und nehmen darin jeweils teilweise den Fusskopf 10 der hindurchgesteckten Blechfüsse 5 in sich auf. Durch geeignete Orientierung sowohl der beiden Bürstenführungsbleche 4 als auch der Bodenbleche 7 bezüglich der Führungsrichtung F wäre bei der Montage der radiale Abstand D etwas grösser als der Durchmesser K des Universalmotorkommutators 2 realisiert. Somit wäre nach Fig. 1a bei der Montage alternativ bei (nur angedeuteter, jedoch nicht dargestellter) umgekehrter Orientierung sowohl der beiden Bürstenführungsbleche 4 als auch der Bodenbleche 7 bezüglich der Führungsrichtung F die identische Bürstengrundplatte 1 mit identischen Bürstenführungsblechen 4 und identischen Bodenblechen 7 ebenso für den weiteren Durchmesser K' eines (nur teilweise angedeuteten) grösseren Universalmotorkommutators 2' geeignet bestückbar.According to Fig. 1c, the sheet metal feet 5 with respect to their associated next leading end sides 11a, 11b of the brush guide plate 4 are arranged at different distances at a distance Xa, Xb. In this case, the four (each two concealed) to each other in the rectangle arranged sheet metal feet 5 with respect to a half-rotation in the guide direction F to each other two-fold rotationally symmetrical. The sheet metal feet 5 in this case have an asymmetrically widened foot head 10 with respect to the guide direction F, to which the matching bottom holes 8 in the floor panel 7 are assigned. Also, the four mounting holes 6 of the brush base plate 1 are on both sides along the guide direction F on the mounting side sunk expanded and take in each case partially the foot 10 of the inserted through sheet metal feet 5 in itself. By suitable orientation of both the brush guide plates 4 and the bottom plates 7 with respect to the guide direction F would be slightly larger than the diameter K of the universal motor commutator 2 realized during assembly of the radial distance D. Thus, according to Fig. 1a in the assembly alternatively (only hinted, but not shown) reverse orientation of both the brush guide plates 4 and the bottom plates 7 with respect to the guide direction F, the identical brush base plate 1 with identical brush guide plates 4 and identical bottom plates 7 as well further diameter K 'of a (only partially indicated) larger universal motor commutator 2' suitably equipped.

Nach Fig. 2a weist eine ringscheibenförmige Bürstengrundplatte 1 für einen angedeuteten rotierenden Universalmotorkommutator 2' eines grossen Kommutatordurchmessers K' zur radialen Führung der beiden angedeuteten Kohlebürsten 3 längs einer Führungsrichtung F passend ausgebildete Bürstenführungsbleche 4' auf, die in einen radialen Abstand D' voneinander angeordnet sind, der etwas grösser als der Durchmesser K' des Universalmotorkommutators 2' ist. Zudem sind jeweils Bodenbleche 7 vorhanden.According to Fig. 2a, an annular disk-shaped brush base plate 1 for an indicated rotating universal motor commutator 2 'of a large commutator diameter K' to Radial guidance of the two indicated carbon brushes 3 along a guide direction F suitably formed brush guide plates 4 ', which are arranged at a radial distance D' from each other, which is slightly larger than the diameter K 'of the universal motor commutator 2'. In addition, bottom plates 7 are available.

Nach Fig. 2b ist das U-förmige Bürstenführungsblech 4' im Fussbereich 12 nahe den Blechfüssen 5 ungekröpft. Die vier Blechfüsse 5 des Bürstenführungsbleches 4' sind durch die passend zugeordneten Montagelöcher 6 der Bürstengrundplatte 1 hindurchgesteckt und zur Befestigung nach Innen um Wülste 9 der Bürstengrundplatte herum gebogen. Zwischen der Bürstengrundplatte 1 und dem Bürstenführungsblech 4' ist das Bodenblech 7 mit den Blechfüssen 5 passend zugeordneten Bodenlöchern 8 angeordnet, durch welche die Blechfüsse 5 ebenfalls hindurchgesteckt sind.According to Fig. 2b, the U-shaped brush guide plate 4 'in the foot area 12 near the sheet metal feet 5 un-cranked. The four sheet metal feet 5 of the brush guide plate 4 'are inserted through the matingly associated mounting holes 6 of the brush base plate 1 and bent for attachment to the inside around beads 9 of the brush base plate around. Between the brush base plate 1 and the brush guide plate 4 ', the bottom plate 7 is arranged with the sheet metal feet 5 suitably associated bottom holes 8, through which the sheet metal feet 5 are also inserted therethrough.

Nach Fig. 2c weisen die Blechfüsse 5 einen bezüglich der Führungsrichtung F unsymmetrisch verbreiterten Fusskopf 10' auf, dem die passenden Bodenlöcher 8 im Bodenblech 7 zugeordnet sind. Auch die vier Montagelöcher 6 der Bürstengrundplatte 1 sind beidseitig längs der Führungsrichtung F montageseitig eingesenkt erweitert und nehmen darin jeweils teilweise den Fusskopf 10' der hindurchgesteckten Blechfüsse 5 in sich auf. Durch (nur angedeutete) alternativ ausgebildete Bürstenführungsbleche 4 mit längs der Führungsrichtung F anders versetzten Fusskopf 10 würde bei der Montage der radiale Abstand D etwas kleiner als der Durchmesser K' des Universalmotorkommutators 2' realisiert. Somit wäre nach Fig. 2a alternativ bei der Montage mit alternativen Bürstenführungsblechen 4 mit bezüglich der Führungsrichtung F versetzten Fussköpfen 10 die identische Bürstengrundplatte 1 mit identischen Bodenblechen 7 ebenso für den kleineren Durchmesser K eines (nur teilweise angedeuteten) weiteren Universalmotorkommutators 2 geeignet bestückbar.According to Fig. 2c, the sheet metal feet 5 have a respect to the guide direction F asymmetrically widened foot 10 ', which are associated with the matching bottom holes 8 in the bottom plate 7. Also, the four mounting holes 6 of the brush base plate 1 are on both sides along the guide direction F on the mounting side sunk expands and take in each case partially the foot 10 'of the inserted through sheet metal feet 5 in itself. By (only hinted) alternatively trained brush guide plates 4 with differently along the guide direction F differently offset foot 10 would be slightly smaller than the diameter K 'of the universal motor commutator 2' realized during assembly of the radial distance D. Thus, according to FIG. 2 a, when mounting with alternative brush guide plates 4 with base heads 10 offset with respect to the guide direction F, the identical brush base plate 1 with identical bottom plates 7 would also be suitable for the smaller diameter K of a further universal motor commutator 2 (only partially indicated).

Claims (6)

Bürstengrundplatte für einen Universalmotor mit zur radialen Führung für die Kohlebürsten (3) passend ausgebildeten U-förmigen Bürstenführungsblechen (4) mit radial versetzten Blechfüssen (5), deren Topologie zueinander zweizählig rotationssymmetrisch ist und die jeweils durch passend zugeordnete Montagelöcher (6) hindurchgesteckt sind, dadurch gekennzeichnet, dass zumindest zwei Blechfüsse (5) jeweils bezüglich ihrer zugeordnet nächsten Führungsendseite (11 a, 11 b) des Bürstenführungsbleches (4) unterschiedlich weit beabstandet sind.Brush base plate for a universal motor with radial guide for the carbon brushes (3) suitably formed U-shaped brush guide plates (4) with radially offset metal feet (5) whose topology is twofold rotationally symmetrical to each other and which are respectively inserted through appropriately associated mounting holes (6), characterized in that at least two sheet metal feet (5) in each case with respect to their associated next leading end side (11 a, 11 b) of the brush guide plate (4) are spaced at different distances. Bürstengrundplatte nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dieser und den Bürstenführungsblechen (4) je ein Bodenblech (7) mit den Blechfüssen (5) passend zugeordneten Bodenlöchern (8) angeordnet ist, durch welche die Blechfüsse (5) hindurchgesteckt sind.Brush base plate according to claim 1, characterized in that between the latter and the brush guide plates (4) a bottom plate (7) is arranged with the sheet metal feet (5) suitably associated bottom holes (8) through which the sheet metal feet (5) are inserted. Bürstengrundplatte nach Anspruch 2, dadurch gekennzeichnet, dass zumindest ein Blechfuss (5) des Bürstenführungsbleches (4) einen bezüglich der Führungsrichtung (F) unsymmetrisch verbreiterten Fusskopf (10) aufweist, dem zumindest zwei Bodenlöcher (8) im Bodenblech (7) passend zugeordnet sind.Brush base plate according to claim 2, characterized in that at least one sheet metal foot (5) of the brush guide plate (4) with respect to the guide direction (F) asymmetrically widened foot head (10), the at least two bottom holes (8) in the bottom plate (7) are assigned to match , Bürstengrundplatte für einen Universalmotor mit zur radialen Führung für die Kohlebürsten (3) passend ausgebildeten U-förmigen Bürstenführungsblechen (4) mit Blechfüssen (5), die jeweils durch passend zugeordnete Montagelöcher (6) der Bürstengrundplatte hindurchgesteckt sind, wobei zwischen den Bürstenführungsblechen (4) jeweils Bodenbleche (7) mit Bodenlöchern (8) angeordnet sind, durch welche die Blechfüsse (5) hindurchgesteckt sind, dadurch gekennzeichnet, dass zumindest ein Blechfuss (5) des Bürstenführungsbleches (4) einen bezüglich der Führungsrichtung (F) verbreiterten Fusskopf (10) aufweist, dem zumindest ein Bodenloch (8) im Bodenblech (7) passend zugeordnet ist.Brush base plate for a universal motor with radial guidance for the carbon brushes (3) suitably formed U-shaped brush guide plates (4) with sheet metal feet (5), which are respectively inserted through appropriately associated mounting holes (6) of the brush base plate, wherein between the brush guide plates (4) each floor panels (7) are arranged with bottom holes (8) through which the sheet metal feet (5) are inserted, characterized in that at least one sheet metal foot (5) of the brush guide plate (4) with respect to the guide direction (F) widened foot head (10) has, at least one bottom hole (8) in the bottom plate (7) is assigned to match. Bürstengrundplatte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zumindest ein Montageloch (6) längs der Führungsrichtung (F) montageseitig eingesenkt erweitert ist.Brush base plate according to one of claims 1 to 4, characterized in that at least one mounting hole (6) along the guide direction (F) sunk on the mounting side is widened. Bürstengrundplatte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das U-förmige Bürstenführungsblech (4) in der Breite (B) senkrecht zur Führungsrichtung (F) im Fussbereich (12) gekröpft ausgeführt ist.Brush base plate according to one of claims 1 to 5, characterized in that the U-shaped brush guide plate (4) in the width (B) perpendicular to the guide direction (F) in the foot region (12) is cranked.
EP05111785A 2004-12-27 2005-12-07 Brush base plate having brush alignment device of sheet metal Withdrawn EP1675226A3 (en)

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DE102004062840A DE102004062840B3 (en) 2004-12-27 2004-12-27 Brush base plate with brush guide plate

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Also Published As

Publication number Publication date
US20060145565A1 (en) 2006-07-06
EP1675226A3 (en) 2008-02-20
US7495367B2 (en) 2009-02-24
DE102004062840B3 (en) 2006-10-05

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