EP0398320B1 - Carbon brush holder - Google Patents

Carbon brush holder Download PDF

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Publication number
EP0398320B1
EP0398320B1 EP90109318A EP90109318A EP0398320B1 EP 0398320 B1 EP0398320 B1 EP 0398320B1 EP 90109318 A EP90109318 A EP 90109318A EP 90109318 A EP90109318 A EP 90109318A EP 0398320 B1 EP0398320 B1 EP 0398320B1
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EP
European Patent Office
Prior art keywords
carbon brush
brush holder
wall
fastening
projections
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
EP90109318A
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German (de)
French (fr)
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EP0398320A3 (en
EP0398320A2 (en
Inventor
Walter Köster
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.)
Schunk Motorensysteme GmbH
Original Assignee
Schunk Motorensysteme GmbH
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Publication date
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Publication of EP0398320A2 publication Critical patent/EP0398320A2/en
Publication of EP0398320A3 publication Critical patent/EP0398320A3/en
Application granted granted Critical
Publication of EP0398320B1 publication Critical patent/EP0398320B1/en
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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

Definitions

  • the invention relates to a carbon holder made of stamped and folded sheet metal material for fastening to a holding support such as a plastic support, with flat projections extending from the coal holder and aligned with a fastening surface of the holding support engaging in associated recesses in the holding support.
  • a corresponding carbon holder can be found in US-A-3,656,018.
  • a bottom surface has a recess on the one hand and, on the other hand, triangular projections extending from this and from sections of the bottom wall, which are bent out of the plane of the bottom surface in order to engage in a recess of a holding support.
  • a brush holder for electrical machines is known from DE-A-27 33 130, in which the housing has laterally projecting tabs which can be inserted into slot guides of a brush guide. The rags must also be punched out of the sheet metal from which the sections for the Housing of the carbon brush are punched.
  • a sheet metal blank is selected that only enables the carbon brush to be inserted into the housing from the front end, that is to say from the side on which the carbon brush rests on a commutator or slip ring.
  • DE-A-37 26 894 describes a carbon holder in which the attachment of a strand element extending from the carbon brush can be introduced in a sleeve spanning a slot in a wall of the carbon holder.
  • the object of the present invention is to enable the carbon holder to be securely fixed on a holding support such as a plastic support using structurally simple means.
  • a tension-free fixation in the support bracket should be possible, with a hooking in the desired positions if necessary.
  • the carbon brush can be inserted into the carbon holder from the rear, so that the advantages that can be achieved in this way can be retained when equipping the carbon holder.
  • the object is achieved in that the projections run parallel to the mounting surface and are cut out from walls running perpendicular to the mounting surface of the support bracket, to which the walls are folded away, and / or that the projections are extensions of a wall section extending parallel to the mounting surface are dovetail-shaped teeth, which is present in the wall facing the mounting surface of the support bracket.
  • the projections can preferably be designed as latching hooks.
  • the locking hooks preferably have the shape of an unequal leg triangle, the long side legs of which extend in the direction of the front end face of the carbon holder.
  • the projections are extensions of the sections of the carbon holder forming the parting line, it is necessary that, in contrast to the alternative in which the sections form part of the walls running perpendicular to the fastening surface, slightly more sheet metal material is required. Nevertheless, the projections are quasi sections of a wall of the carbon holder, which are predetermined by the course of the wall itself.
  • Each carbon holder 10, 44, 54, 60 and 70 has a cuboid housing 12, the side walls 14 and 16 of which have bulges in order to accommodate a spring element (not shown), preferably a helical spring element, which is attached to the carbon in the direction of the front end face 18 of the Coal holder 10, 44, 54, 60 and 70 exerts directed force.
  • Bendable webs 20 are provided on the back, which serve as spring brakes. As a result, the abrasive carbon with the spring element can be pushed into the carbon holder 10, 44, 54, 60 and 70 from the rear thereof. After the introduction of grinding carbon and spring element, the webs 20 are then bent to partially close the rear end face.
  • a slot 22 is provided in the bulged side wall 16 at a distance from the end region 18 and from the rear brakes 20 consisting of web-like elements, through which a stranded element starting from the carbon can be freely moved around it to connect at its front end with a mounting 24 extending from the housing 12.
  • the attachment 24 is from the wall 16 cut out and bent so that it runs approximately perpendicular to this. This results in a rectangular or square flat surface, which serves as an attachment 24 for the strand element.
  • the attachment 24 is located in the axial direction of the holder 10 in front of or behind the slot 22.
  • the slot 22 only extends over a certain area of the wall 16, the braid can be moved freely. Due to the small extent of the slot 22, however, a high stability of the carbon holder 10 or 44 itself is ensured.
  • the carbon holder 10, 44, 54, 60 and 70 consists of stamped and folded sheet metal material, the edges to be joined together being assembled by a dovetail-shaped connection 30 in the upper wall 32.
  • the opposite wall which forms the underside, can be arranged on a fastening surface, not shown, of a holding support.
  • protrusions 36, 38, 40 emanate from the lower edge region 42 of the walls 16 and 14, respectively. These projections 36 38, 40 remain in the plane of the lower wall to which the side walls 14 and 16 are folded.
  • the projections 36, 38, 40 can be inserted into assigned slot-shaped recesses in the holding support, so that the holder 10 or 44 is preferably fixed in a plastic support without tension.
  • the projections 36, 38, 40 may be round or barbed. The latter is the case when an uncontrolled movement of the carbon holder 10 is to be prevented.
  • a shape of an isosceles triangle is preferably selected, the long leg 56 (see FIG. 4) of which preferably faces the front end face 18 of the respective carbon holder 10, 44, 54, 60 or 70 .
  • the carbon holder 44 according to FIG. 3 differs from that of FIGS. 1 and 2 in that the wall 32 having the dovetail-shaped parting line 30 can also have projections 46 and 48 which run parallel to the wall 32 and can interact with a holding support. For this purpose, it is not necessary that 16 sections are punched out of the walls, even if this is additionally possible, as the projection 40 shows.
  • the projections 46 and 48 of the carbon holder 44 which produce the connection to the holding carrier are preferably formed by sections of toothing which otherwise form the connection between the mutually facing sections 50 and 52 of the wall 32 of the carbon holder 44. It is therefore only necessary that some gears are punched out of the sheet-like base material over a large area and the associated opposite sections of the edge sections 50 and 52 are removed in order to allow the extended gears, i.e. the projections 46 and 48, to run flush in the plane 32. Of course, one can Overlap takes place in the area of the projections 46 and 48 in the area of the sections 50 and 52, so that the projections 46 and 48 rest on the wall 32.
  • Fig. 4 it can be seen in relation to the projections 36 which fix the carbon holder 54 in a carrier plate (not shown) that these can be designed as latching hooks, so that they can be fixed immovably at a specific position of the carrier plate.
  • the projections 36 have the geometry of an unequal-legged triangle, the longer side leg 56 facing the front end face 18 of the carbon holder 54.
  • the charcoal holder 60 according to FIG. 5 has a special feature with respect to the parting line 62 provided in the wall 32.
  • sections 64, 66 of the parting line can be extended beyond the wall 32 and then have parallel sections 68 and 70 parallel to the side walls 14, 16, which e.g. serve as an attachment of the carbon strand, making the attachment plate 24 unnecessary, or as an attachment for e.g. a choke can be used.
  • fastening sections 36, 38 and 74, 76 which each consist of sections of the wall 16 and the wall 32, run both in the plane of the wall 72 and the wall 32 having the parting line 62 opposite wall are formed. This allows the carbon holder 70 to be easily attached to a support in any desired position.
  • FIG. 6 shows a further feature to be emphasized.
  • the fastener 24 to a recess such as e.g. Longitudinal bead 77 may be provided.
  • a depression in the form of an indentation or the like is also possible.

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  • Motor Or Generator Current Collectors (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Stringed Musical Instruments (AREA)

Abstract

A carbon brush holder (10) is proposed, for mounting on a fixing support, such as a plastic support, the carbon brush holder being provided with laterally projecting projections (36, 38), which can be fitted into receptacles of the fixing support. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Kohlehalter aus gestanztem und gefaltetem Blechmaterial zum Befestigen auf einem Halteträger wie Kunststoffträger wobei von dem Kohlehalter ausgehende, zu einer Befestigungsfläche des Halteträgers ausgerichtete flächige Vorsprünge in zugeordnete Ausparungen des Halteträgers eingreifen.The invention relates to a carbon holder made of stamped and folded sheet metal material for fastening to a holding support such as a plastic support, with flat projections extending from the coal holder and aligned with a fastening surface of the holding support engaging in associated recesses in the holding support.

Ein entsprechender Kohlehalter ist der US-A-3,656,018 zu entnehmen. Bei dem bekannten Kohlehalter weist eine Bodenfläche einerseits eine Aussparung und andererseits von dieser und von Abschnitten der Bodenwandung ausgehende dreieckförmige Vorsprünge auf, die aus der Ebene der Bodenfläche gebogen sind, um in einer Ausnehmung eines Halteträgers einzurasten.A corresponding carbon holder can be found in US-A-3,656,018. In the known charcoal holder, a bottom surface has a recess on the one hand and, on the other hand, triangular projections extending from this and from sections of the bottom wall, which are bent out of the plane of the bottom surface in order to engage in a recess of a holding support.

Aus der DE-A-27 33 130 ist eine Bürstenhalterung für elektrische Maschinen bekannt, bei der das Gehäuse seitlich abragende Lappen aufweist, die in Schlitzführungen einer Bürstenführung einbringbar sind. Die Lappen müssen zusätzlich aus dem Blechmaterial gestanzt werden, aus dem auch die Abschnitte für das Gehäuse der Kohlebürste gestanzt werden. Dabei wird ein Blechzuschnitt gewählt, der es nur ermöglicht, daß die Kohlebürste von der vorderen Stirnseite in das Gehäuse einbringbar ist, also von der Seite, an der die Kohlebürste an einem Kommutator oder Schleifring anliegt.A brush holder for electrical machines is known from DE-A-27 33 130, in which the housing has laterally projecting tabs which can be inserted into slot guides of a brush guide. The rags must also be punched out of the sheet metal from which the sections for the Housing of the carbon brush are punched. A sheet metal blank is selected that only enables the carbon brush to be inserted into the housing from the front end, that is to say from the side on which the carbon brush rests on a commutator or slip ring.

In der DE-A-37 26 894 wird ein Kohlehalter beschrieben, bei dem die Befestigung eines von der Kohlebürste ausgehenden Litzenelementes in einer einen Schlitz in einer Wandung des Kohlehalters überspannenden Hülse einbringbar ist.DE-A-37 26 894 describes a carbon holder in which the attachment of a strand element extending from the carbon brush can be introduced in a sleeve spanning a slot in a wall of the carbon holder.

Aufgabe der vorliegenden Erfindung ist es, mit konstruktiv einfachen Mitteln ein sicheres Festlegen des Kohlehalters auf einem Halteträger wie Kunststoffträger zu ermöglichen. Dabei soll eine spannungsfreie Fixierung im Halteträger möglich sein, wobei gegebenenfalls ein Festhaken in gewünschten Positionen möglich sein soll. Dabei soll selbstverständlich die Möglichkeit gegeben sein, daß die Kohlebürste von der Rückseite in den Kohlehalter eingebracht werden kann, so daß die hierdurch erreichbaren Vorteile bei der Bestückung der Kohlehalter beibehalten bleiben können.The object of the present invention is to enable the carbon holder to be securely fixed on a holding support such as a plastic support using structurally simple means. A tension-free fixation in the support bracket should be possible, with a hooking in the desired positions if necessary. Of course, there should be the possibility that the carbon brush can be inserted into the carbon holder from the rear, so that the advantages that can be achieved in this way can be retained when equipping the carbon holder.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Vorsprünge parallel zur Befestigungsfläche verlaufen und aus senkrecht zur Befestigungsfläche des Halteträgers verlaufenden Wandungen ausgeschnittene Abschnitte sind, zu denen die Wandungen weggefaltet sind, und/oder daß die Vorsprünge Verlängerungen einer von Wandungsabschnitten ausgehenden, parallel zur Befestigungsfläche verlaufenden schwalbenschwanzförmigen Verzahnung sind, die in der der Befestigungsfläche des Halteträgers zugewandten Wandung vorhanden ist.The object is achieved in that the projections run parallel to the mounting surface and are cut out from walls running perpendicular to the mounting surface of the support bracket, to which the walls are folded away, and / or that the projections are extensions of a wall section extending parallel to the mounting surface are dovetail-shaped teeth, which is present in the wall facing the mounting surface of the support bracket.

Vorzugsweise können dabei die Vorsprünge als Rasthaken ausgebildet sein. In einem solchen Falle weisen die Rasthaken bevorzugterweise die Form eines ungleichschenkeligen Dreieckes auf, dessen langer Seitenschenkel in Richtung der vorderen Stirnfläche des Kohlehalters verläuft.The projections can preferably be designed as latching hooks. In such a case, the locking hooks preferably have the shape of an unequal leg triangle, the long side legs of which extend in the direction of the front end face of the carbon holder.

Sofern die Vorsprünge Verlängerungen von die Trennfuge bildenden Abschnitten des Kohlehalters sind, ist es zwar erforderlich, daß im Gegensatz zu der Alternative, bei der die Abschnitte Teil der senkrecht zur Befestigungsfläche verlaufenden Wandungen bilden, geringfügig mehr Blechmaterial benötigt wird. Dennoch sind die Vorsprünge quasi Abschnitte einer Wandung des Kohlehalters, die durch den Verlauf der Wandung selbst vorgegeben sind.If the projections are extensions of the sections of the carbon holder forming the parting line, it is necessary that, in contrast to the alternative in which the sections form part of the walls running perpendicular to the fastening surface, slightly more sheet metal material is required. Nevertheless, the projections are quasi sections of a wall of the carbon holder, which are predetermined by the course of the wall itself.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich nicht nur aus den Ansprüchen, den diesen zu entnehmenden Merkmalen -für sich und/oder in Kombination-, sondern auch aus der nachfolgenden Beschreibung von der Zeichnung zu entnehmenden bevorzugten Ausführungsbeispielen.Further details, advantages and features of the invention result not only from the claims, the features to be extracted from them - individually and / or in combination - but also from the following description of preferred embodiments to be taken from the drawing.

Es zeigen:

Fig. 1
eine perspektivische Darstellung einer ersten Ausführungsform eines Kohlehalters, betrachtet von schräg hinten,
Fig. 2
eine perspektivische Vorderansicht des Kohlehalters nach Fig. 1,
Fig. 3
eine zweite Ausführungsform eines Kohlehalters,
Fig. 4
eine dritte Ausführungsform eines Kohlehalters,
Fig. 5
eine vierte Ausführungsform eines Kohlehalters und
Fig. 6
eine fünfte Ausführungsform eines Kohlehalters.
Show it:
Fig. 1
1 shows a perspective illustration of a first embodiment of a carbon holder, viewed from obliquely behind,
Fig. 2
2 shows a perspective front view of the coal holder according to FIG. 1,
Fig. 3
a second embodiment of a carbon holder,
Fig. 4
a third embodiment of a carbon holder,
Fig. 5
a fourth embodiment of a carbon holder and
Fig. 6
a fifth embodiment of a carbon holder.

In den Figuren, in denen gleiche Elemente mit gleichen Bezugszeichen versehen sind, sind verschiedene Ausführungsformen von Kohlehaltern 10, 44, 54, 60 und 70 dargestellt, die nicht gezeichnete Schleifkohlen aufnehmen, die mit den Lamellen eines Kommutators oder Schleifringen eines Elektromotors wechselwirken.In the figures, in which the same elements are provided with the same reference numerals, different embodiments of carbon holders 10, 44, 54, 60 and 70 are shown, which receive carbon brushes, not shown, which interact with the lamellae of a commutator or slip rings of an electric motor.

Jeder Kohlehalter 10, 44, 54, 60 bzw. 70 weist ein quaderförmiges Gehäuse 12 auf, dessen Seitenwandungen 14 und 16 Ausbauchungen aufweisen, um ein nicht dargestelltes vorzugsweise schraubenförmig ausgebildetes Federelement auf zunehmen, das auf die Schleifkohle eine in Richtung der vorderen Stirnseite 18 des Kohlehalters 10, 44, 54, 60 bzw. 70 gerichtete Kraft ausübt. Rückseitig sind umbiegbare Stege 20 vorgesehen, die als Federbremsen dienen. Folglich kann die Schleifkohle mit dem Federelement von der Rückseite des Kohlehalters 10, 44, 54, 60 bzw. 70 her in diesen geschoben werden. Nach Einbringen von Schleifkohle und Federelement werden dann die Stege 20 zum teilweisen Verschließen der rückseitigen Stirnfläche verbogen.Each carbon holder 10, 44, 54, 60 and 70 has a cuboid housing 12, the side walls 14 and 16 of which have bulges in order to accommodate a spring element (not shown), preferably a helical spring element, which is attached to the carbon in the direction of the front end face 18 of the Coal holder 10, 44, 54, 60 and 70 exerts directed force. Bendable webs 20 are provided on the back, which serve as spring brakes. As a result, the abrasive carbon with the spring element can be pushed into the carbon holder 10, 44, 54, 60 and 70 from the rear thereof. After the introduction of grinding carbon and spring element, the webs 20 are then bent to partially close the rear end face.

Bei den Ausführungsbeispielen der Fig. 1 - 3 ist in der ausgebauchten Seitenwandung 16 beabstandet zum Stirnbereich 18 und zu den rückseitig angeordneten aus stegartigen Elementen bestehenden Federbremsen 20 ein Schlitz 22 vorhanden, durch den ein von der Schleifkohle ausgehendes Litzenelement frei beweglich durchziehbar ist, um dieses mit seinem vorderen Ende mit einer vom Gehäuse 12 ausgehenden Befestigung 24 zu verbinden. Die Befestigung 24 ist aus der Wandung 16 ausgeschnitten und derart umgebogen, daß sie in etwa senkrecht zu dieser verläuft. Es ergibt sich folglich eine rechteckige bzw. quadratische ebene Fläche, die als Befestigung 24 für das Litzenelement dient. Die Befestigung 24 befindet sich in axialer Richtung des Halters 10 vor bzw. hinter dem Schlitz 22.In the exemplary embodiments of FIGS. 1-3, a slot 22 is provided in the bulged side wall 16 at a distance from the end region 18 and from the rear brakes 20 consisting of web-like elements, through which a stranded element starting from the carbon can be freely moved around it to connect at its front end with a mounting 24 extending from the housing 12. The attachment 24 is from the wall 16 cut out and bent so that it runs approximately perpendicular to this. This results in a rectangular or square flat surface, which serves as an attachment 24 for the strand element. The attachment 24 is located in the axial direction of the holder 10 in front of or behind the slot 22.

Zwischen der Befestigung 24 und dem Schlitz 22 verläuft ein Abschnitt 26 der Wandung 16, die als Litzenbremse dient. Wird nämlich die Schleifkohle und damit das Litzenelement in Richtung der Stirnseite 18 aufgrund der einwirkenden Federkraft verschoben, so legt sich das Litzenelement um den den Abschnitt 26 bzw. den Schlitz 22 begrenzenden, der Befestigung 24 zugewandten Rand 28, so daß bei abgestimmter Länge des Litzenelementes nach einem bestimmten Verbrauch der Schleifkohle ein weiteres Bewegen dieser trotz Einwirken des Federelementes nicht mehr möglich ist. Mit anderen Worten bleibt ein Rest der Schleifkohle innerhalb des Kohlehalters 10, und zwar dann, wenn die Länge des Litzenelementes kleiner als der Abstand zwischen Befestigung 24 und Rand 28 und diesem und dem Stirnbereich 18 des Kohlehalters 10 ist.A section 26 of the wall 16, which serves as a strand brake, runs between the fastening 24 and the slot 22. If namely the grinding carbon and thus the strand element is displaced in the direction of the end face 18 due to the spring force acting on it, the strand element lies around the edge 28 which delimits the section 26 or the slot 22 and faces the fastening 24, so that with a coordinated length of the strand element after a certain consumption of the carbon, a further movement of this is no longer possible despite the action of the spring element. In other words, a remainder of the grinding carbon remains within the carbon holder 10, specifically when the length of the strand element is less than the distance between the attachment 24 and the edge 28 and this and the end region 18 of the carbon holder 10.

Obwohl sich der Schlitz 22 nur über einen gewissen Bereich der Wandung 16 erstreckt, ist eine Freibeweglichkeit der Litze gegeben. Durch die geringe Erstreckung des Schlitzes 22 ist jedoch eine hohe Stabilität des Kohlehalters 10 bzw. 44 selbst gewährleistet.Although the slot 22 only extends over a certain area of the wall 16, the braid can be moved freely. Due to the small extent of the slot 22, however, a high stability of the carbon holder 10 or 44 itself is ensured.

Der Kohlehalter 10, 44, 54, 60 bzw. 70 besteht aus gestanztem und gefaltetem Blechmaterial, wobei die zusammenzufügenden Ränder durch eine schwalbenschwanzförmig ausgebildete Verbindung 30 in der oberen Wandung 32 zusammengesetzt sind.The carbon holder 10, 44, 54, 60 and 70 consists of stamped and folded sheet metal material, the edges to be joined together being assembled by a dovetail-shaped connection 30 in the upper wall 32.

Die gegenüberliegende, die Unterseite bildende Wandung kann auf einer nicht dargestellten Befestigungsfläche eines Halteträgers angeordnet werden. Hierzu gehen Vorsprünge 36, 38, 40 aus, die aus dem unteren Randbereich 42 der Wandungen 16 bzw. 14 herausgestanzt sind. Diese Vorsprünge 36, 38, 40 verbleiben in der Ebene der unteren Wandung, zu der die Seitenwandungen 14 und 16 gefaltet werden. Die Vorsprünge 36, 38, 40 können in zugeordnete schlitzförmige Aussparungen des Halteträgers eingeschoben werden, so daß sich ein spannungsfreies Fixieren des Halters 10 bzw. 44 in vorzugsweise einem Kunststoffträger ergibt.The opposite wall, which forms the underside, can be arranged on a fastening surface, not shown, of a holding support. For this purpose, protrusions 36, 38, 40 emanate from the lower edge region 42 of the walls 16 and 14, respectively. These projections 36 38, 40 remain in the plane of the lower wall to which the side walls 14 and 16 are folded. The projections 36, 38, 40 can be inserted into assigned slot-shaped recesses in the holding support, so that the holder 10 or 44 is preferably fixed in a plastic support without tension.

Die Vorsprünge 36, 38, 40 können rund oder als Widerhaken geformt sein. Letzteres ist dann der Fall, wenn ein unkontrolliertes Verrücken des Kohlehalters 10 unterbunden werden soll.The projections 36, 38, 40 may be round or barbed. The latter is the case when an uncontrolled movement of the carbon holder 10 is to be prevented.

Sofern die Funktion eines Widerhakens erfüllt sein soll, wird vorzugsweise eine Form eines ungleichschenkligen Dreiecks gewählt, wobei dessen langer Schenkel 56 (s. Fig. 4) vorzugsweise der vorderen Stirnfläche 18 des jeweiligen Kohlehalters 10, 44, 54, 60 bzw. 70 zugewandt ist.If the function of a barb is to be fulfilled, a shape of an isosceles triangle is preferably selected, the long leg 56 (see FIG. 4) of which preferably faces the front end face 18 of the respective carbon holder 10, 44, 54, 60 or 70 .

Der Kohlehalter 44 nach Fig. 3 unterscheidet sich von dem der Fig. 1 und 2 dahingehend, daß auch die die schwalbenschwanzförmige Trennfuge 30 aufweisende Wandung 32 Vorsprünge 46 und 48 aufweisen kann, die parallel zu der Wandung 32 verläuft und mit einem Halteträger wechselwirken kann. Hierzu ist es nicht erforderlich, daß aus den Wandungen 16 Abschnitte ausgestanzt werden, gleichwenn dies ergänzend - wie der Vorsprung 40 belegt - möglich ist.The carbon holder 44 according to FIG. 3 differs from that of FIGS. 1 and 2 in that the wall 32 having the dovetail-shaped parting line 30 can also have projections 46 and 48 which run parallel to the wall 32 and can interact with a holding support. For this purpose, it is not necessary that 16 sections are punched out of the walls, even if this is additionally possible, as the projection 40 shows.

Bevorzugterweise werden die die Verbindung mit dem Halteträger herstellenden Vorsprünge 46 und 48 des Kohlehalters 44 durch Abschnitte von Verzahnungen gebildet, die ansonsten die Verbindung zwischen den aneinanderzugewandten Abschnitten 50 und 52 der Wandung 32 des Kohlehalters 44 bilden. Es ist folglich nur erforderlich, daß aus dem blechförmigen Basismaterial einige Verzahnungen großflächiger ausgestanzt und die zugeordneten gegenüberliegenden Abschnitte des Randabschnitts 50 bzw. 52 entfernt werden, um die verlängerten Verzahnungen, also die Vorsprünge 46 und 48 bündig in der Ebene 32 verlaufen zu lassen. Selbstverständlich kann auch eine Überlappung im Bereich der Vorsprünge 46 und 48 im Bereich der Abschnitte 50 bzw. 52 erfolgen, so daß die Vorsprünge 46 und 48 auf der Wandung 32 aufliegen.The projections 46 and 48 of the carbon holder 44 which produce the connection to the holding carrier are preferably formed by sections of toothing which otherwise form the connection between the mutually facing sections 50 and 52 of the wall 32 of the carbon holder 44. It is therefore only necessary that some gears are punched out of the sheet-like base material over a large area and the associated opposite sections of the edge sections 50 and 52 are removed in order to allow the extended gears, i.e. the projections 46 and 48, to run flush in the plane 32. Of course, one can Overlap takes place in the area of the projections 46 and 48 in the area of the sections 50 and 52, so that the projections 46 and 48 rest on the wall 32.

Bei der den Fig. 4 bis 6 zu entnehmenden Ausführungsform von Kohlehaltern wird im wesentlichen nur auf die Merkmale eingegangen, die sich in den Fig. 1 bis 3 nicht wiederfinden. Folglich ist für die gleichen Merkmale auf die zuvor wiedergegebene Beschreibung zu verweisen.In the embodiment of carbon holders shown in FIGS. 4 to 6, only the features that are not shown in FIGS. 1 to 3 are essentially dealt with. Consequently, reference is made to the description given above for the same features.

Der Kohlehalter 54 nach Fig. 4 weist einen in der Seitenwandung 16 verlaufenden Schlitz 56 auf, von dessen Längsrand die Befestigung 24 ausgeht. Folglich befindet sich zwischen der Befestigung 24 und dem Schlitz kein Abschnitt der Seitenwandung 16, die als Litzenbremse dient.4 has a slot 56 in the side wall 16, from the longitudinal edge of which the fastening 24 extends. Consequently, there is no portion of the side wall 16 between the fastening 24 and the slot, which serves as a braid brake.

Aus der Fig. 4 wird in bezug auf die den Kohlehalter 54 in einer nicht dargestellten Trägerplatte festlegenden Vorsprünge 36 ersichtlich, daß diese als Rasthaken ausgebildet sein können, um also ein unverrückbares Festlegen an einer bestimmten Position der Trägerplatte zu ermöglichen. Hierbei weisen die Vorsprünge 36 die Geometrie eines ungleichschenkeligen Dreiecks auf, wobei der längere Seitenschenkel 56 der vorderen Stirnfläche 18 des Kohlehalters 54 zugewandt ist.From Fig. 4 it can be seen in relation to the projections 36 which fix the carbon holder 54 in a carrier plate (not shown) that these can be designed as latching hooks, so that they can be fixed immovably at a specific position of the carrier plate. In this case, the projections 36 have the geometry of an unequal-legged triangle, the longer side leg 56 facing the front end face 18 of the carbon holder 54.

Der Kohlehalter 60 nach Fig. 5 weist in bezug auf die in der Wandung 32 vorgesehene Trennfuge 62 eine Besonderheit auf. So können Abschnitte 64, 66 der Trennfuge über die Wandung 32 hinaus verlängert und sodann parallel zu den Seitenwandungen 14, 16 abgewinkelte Abschnitte 68 und 70 aufweisen, die z.B. als Befestigung der Kohlelitze dienen, wodurch sich die Befestigungsplatte 24 erübrigt, oder als Befestigung für z.B. eine Drossel genutzt werden können.The charcoal holder 60 according to FIG. 5 has a special feature with respect to the parting line 62 provided in the wall 32. Thus, sections 64, 66 of the parting line can be extended beyond the wall 32 and then have parallel sections 68 and 70 parallel to the side walls 14, 16, which e.g. serve as an attachment of the carbon strand, making the attachment plate 24 unnecessary, or as an attachment for e.g. a choke can be used.

Bei dem Kohlehalter 70 der Fig. 6 laufen sowohl in der Ebene der Wandung 72 als auch der die Trennfuge 62 aufweisenden Wandung 32 Befestigungsabschnitte 36, 38 bzw. 74, 76, die jeweils aus Abschnitten der Wandung 16 bzw. der gegenüberliegenden Wandung gebildet sind. Hierdurch kann der Kohlehalter 70 problemlos in jeder gewünschten Position auf einem Träger befestigt werden.In the coal holder 70 of FIG. 6, fastening sections 36, 38 and 74, 76, which each consist of sections of the wall 16 and the wall 32, run both in the plane of the wall 72 and the wall 32 having the parting line 62 opposite wall are formed. This allows the carbon holder 70 to be easily attached to a support in any desired position.

Der Fig. 6 ist ein weiteres hervorzuhebendes Merkmal zu entnehmen. So kann zum kontrollierten Festlegen der Litze und damit dessen Befestigung durch z.B. Schweißen das Befestigungselement 24 mit einer Vertiefung wie z.B. Längssicke 77 versehen sein. Eine Vertiefung in Form einer Einbuchtung oder ähnliches ist gleichfalls möglich.6 shows a further feature to be emphasized. For example, for controlled fixing of the strand and thus its attachment by e.g. Weld the fastener 24 to a recess such as e.g. Longitudinal bead 77 may be provided. A depression in the form of an indentation or the like is also possible.

Claims (10)

  1. Carbon brush holder (10, 44, 54, 60, 70) of punched and folded sheet metal for mounting on a holding bracket such as a plastic bracket, flat projections (36, 38, 40, 46, 48, 74, 76) which originate from the carbon brush holder and are oriented to a mounting surface of the holding bracket engaging in related recesses of the holding bracket,
    characterized in that
    the projections (36, 38, 40, 74, 76) run parallel to the mounting surface and are sections cut out of walls (14, 16) of the holding bracket running perpendicular to the mounting surface, to form which the walls (14, 16) are folded away, and/or the projections (46, 48) are extensions of a dovetailed tooth construction (30) originating from wall sections and running parallel to the mounting surface, which tooth construction is present in the wall (32) facing the mounting surface of the holding bracket.
  2. Carbon brush holder according to claim 1,
    characterized in that
    the projections (36, 38, 40, 46, 48, 74, 76) are formed as locking hooks.
  3. Carbon brush holder according to at least claim 1 or 2,
    characterized in that
    projections (36, 38, 40, 46, 48) are present in planes of opposed walls (42, 32) running parallel to the mounting surface.
  4. Carbon brush holder according to claim 2,
    characterized in that
    the locking hook (36) has the form of an unequal-sided triangle, the longer side (56) of which runs in the direction of the front end face (18) of the carbon brush holder (10, 44, 54, 60, 70).
  5. Carbon brush holder (10, 44, 54, 60) according to claim 1 of an electrically conductive material for a carbon brush, in particular for an electric motor, including a preferably parallelepiped housing (12), through the front end face (18) of which a carbon brush axially displaceable in the housing is movable, a spring element disposed in the housing and acting axially on the carbon brush, a pigtail elernent issuing from the carbon brush and a longitudinal slot (22) running in a side wall (16) of the housing, in which slot at least a section of the pigtail element is disposed to be freely movable, a section being formed in the area of the wall containing the longitudinal slot as a fastening (24) for the free end of the pigtail element,
    characterized in that
    the section forming the fastening (24) projects laterally from the wall (16) and runs in front of or behind the longitudinal slot (22).
  6. Carbon brush holder according to claim 5,
    characterized in that
    disposed between the fastening (24) and the longitudinal slot (22) is a pigtail brake (26, 28) limiting the movement of the pigtail in the direction of the front end face (18).
  7. Carbon brush holder according to claim 5,
    characterized in that
    the pigtail brake is an area of the carbon brush holder wall (16) running between the longitudinal slot (22) and the fastening (24).
  8. Carbon brush holder according to claim 5,
    characterized in that
    the section (24) forming the fastening runs essentially perpendicular to the wall (16) and is formed preferably flat.
  9. Carbon brush holder according to claim 1,
    characterized in that
    the carbon brush holder (70) consisting of punched and folded sheet metal has a dovetailed parting line (62), at least a section (64, 66) of the parting line extending over the wall (14, 16) running perpendicular to the surface containing the parting line and being bent preferably parallel to this, the end section (68, 69) being formed as a plug connector part or as a fastening of e.g. a choke.
  10. Carbon brush holder according to claim 5,
    characterized in that
    the fastening (24) has an indentation such as e.g. a crease (77) for the controlled fixing of the pigtail element.
EP90109318A 1989-05-18 1990-05-17 Carbon brush holder Expired - Lifetime EP0398320B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8906152U 1989-05-18
DE8906152U DE8906152U1 (en) 1989-05-18 1989-05-18 Coal holder

Publications (3)

Publication Number Publication Date
EP0398320A2 EP0398320A2 (en) 1990-11-22
EP0398320A3 EP0398320A3 (en) 1991-10-16
EP0398320B1 true EP0398320B1 (en) 1994-11-30

Family

ID=6839316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109318A Expired - Lifetime EP0398320B1 (en) 1989-05-18 1990-05-17 Carbon brush holder

Country Status (3)

Country Link
EP (1) EP0398320B1 (en)
AT (1) ATE114883T1 (en)
DE (2) DE8906152U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1109272A2 (en) * 1999-12-15 2001-06-20 Schunk Italia S.r.l. Carbon brush holder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717594B4 (en) * 1997-04-25 2017-09-07 BSH Hausgeräte GmbH Brush arrangement on an electric machine
US7545072B2 (en) 2005-10-13 2009-06-09 Culsforth Products, Inc. Resilient member for a brush holder assembly

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656018A (en) * 1970-11-25 1972-04-11 Gen Electric Brush holder assembly
FR2315790A1 (en) * 1975-06-26 1977-01-21 Sev Marchal Brush housing for electric motors - consists of two pieces designed to minimise play and is intended for small low powered motors
US4074162A (en) * 1976-06-24 1978-02-14 Dynamics Corporation Of America Brush spring assembly
DE7715158U1 (en) * 1977-05-12 1978-10-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen
DE2733130A1 (en) * 1977-07-22 1979-02-01 Bosch Gmbh Robert BRUSH HOLDER FOR ELECTRIC MACHINERY
DE2823991C2 (en) * 1978-06-01 1986-06-05 Robert Bosch Gmbh, 7000 Stuttgart Brush holder for an electric machine
GB2094069A (en) * 1981-03-04 1982-09-08 Carbone Ltd Holder for an electrical conductor brush
DE3726689C2 (en) * 1986-08-13 2001-07-26 Schunk Motorensysteme Holder for a carbon brush
DE3627529A1 (en) * 1986-08-13 1988-02-25 Schunk Motorensysteme Holder for a carbon brush
DE3726894A1 (en) * 1986-08-13 1988-02-18 Schunk Motorensysteme Holder for a carbon brush

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1109272A2 (en) * 1999-12-15 2001-06-20 Schunk Italia S.r.l. Carbon brush holder
EP1109272A3 (en) * 1999-12-15 2002-02-06 Schunk Italia S.r.l. Carbon brush holder

Also Published As

Publication number Publication date
ATE114883T1 (en) 1994-12-15
EP0398320A3 (en) 1991-10-16
EP0398320A2 (en) 1990-11-22
DE8906152U1 (en) 1989-11-16
DE59007800D1 (en) 1995-01-12

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