EP0966072B1 - Commutator device for electrical machines - Google Patents
Commutator device for electrical machines Download PDFInfo
- Publication number
- EP0966072B1 EP0966072B1 EP99107597A EP99107597A EP0966072B1 EP 0966072 B1 EP0966072 B1 EP 0966072B1 EP 99107597 A EP99107597 A EP 99107597A EP 99107597 A EP99107597 A EP 99107597A EP 0966072 B1 EP0966072 B1 EP 0966072B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- commutator
- brushes
- push
- brush
- trapezoidal
- 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
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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
- H01R39/04—Commutators
-
- 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
- H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing
Definitions
- the invention relates to a power turning device for Electrical machines in the preamble of claim 1 defined genus.
- Such power turning devices such as those in the DE 40 16 663 C2 are described, usually have one cylindrical commutator, also collector or commutator called that of a variety of axially aligned Is composed of slats that are isolated from each other and connected to one turn of an armature winding are.
- the armature winding is in an iron sheet package punched-out anchor grooves of a rotor or rotor added, which rotates together with the commutator a rotor, armature or rotor shaft that sits at electric motors the output shaft and in electric Generators the drive shaft of the electrical machine represents.
- the brushes as coal, commutator, collector or commutator brushes are in so-called brush cases axially displaceable and are so-called.
- Brush springs with their pressure switch facing the commutator or pressing surface on the outer jacket of the commutator pressed.
- the radially aligned brush holder is on attached to a brush holder.
- the brushes With rotating commutator Depending on the design of the brush holder, the brushes lead more or less large vibrations that don't result in a inconsiderable noise.
- the current transfer between collector fins and the brushes impaired, resulting in a higher Current density at the transition point, which in turn leads negative for wear and the life of the brushes as well as the efficiency of the machine.
- the power turning device has the advantage that the concave shape of the commutator the vibration amplitude of the brushes along its outer surface be considerably restricted in the axial direction.
- the outer jacket of the commutator is provided with scoring or corrugation, which is a kind Forced guidance of the brushes on the commutator surface causes.
- This forced guidance is optimal if according to a advantageous embodiment of the invention, the pressing surface the commutator brushes with a similar grooving or Corrugation is provided so that the brushes over the two now engaging grooves or corrugations quasi are guided in the circumferential direction of the commutator. With not with grooved brushes will become one Tracking only after a short use with the first abrasion the brushes in the order of the groove depth.
- the slats of the commutator at an angle to the commutator axis aligned.
- tilting the Commutator lamellae becomes the sliding transition of the brushes from one slat to the next improved and so-called slat jumps, which from tolerance-dependent, different radial heights of the Commutator lamellae result, softened, which means that Radial vibration behavior of the brushes improved becomes.
- the pressing surface of the brushes designed so that their axial Width from the leading edge over at least one Part of the extending in the direction of rotation of the commutator Depth of the press surface increases steadily.
- the leading edge the brush is the one in the direction of rotation of the commutator at the front lying edge of the brushes.
- the power turning device shown schematically in Fig. 1 for an electrical machine comprises a commutator 10 which rotatably on a rotor shaft, not shown here Rotors of the electrical machine sits, as well as at least two Brushes 11 for current supply, which are non-rotatable in the housing electrical machine are held.
- the commutator 10 is off a plurality of axially to the commutator axis 18 aligned, current-conducting commutator bars 12 composed in the circumferential direction of the commutator 10 lie next to each other and are isolated from each other.
- the Insulating surfaces are designated 13.
- the slats 12 run in slat hooks 14 on, which are used to connect the rotor winding.
- the brushes 11 are axially displaceable in the brush holder 15 added, the brush holder 15 on an im Machine housing rotatably held brush holder 16 so are attached that the brushes 11 radially to the commutator 10th are aligned.
- a brush spring not shown here, that on the face away from the commutator 10 Brush 11 rests with spring pressure, the brush 11 presses with its pressing surface 111 non-positively on the circumference of the Commutator 10 on.
- the outer casing of the commutator must be kept as small as possible 10 not cylindrical, but concave.
- the commutator 10 shown in FIG. 2 is still additionally the outer jacket with corrugation or scoring 17 provided, which is enlarged in section in Fig. 4 in section is shown.
- the scoring is 17 straight teeth with symmetrical tooth flanks, where the groove spacing a, i.e. the distance between two Tooth tips, approx. 0.2 - 0.6 mm and the groove depth t, i.e. the Distance from tooth tip and tooth base is approx. 0.1 - 0.4 mm.
- 5 is another embodiment of a Groove 17 shown.
- the scoring shows one sinusoidal corrugation, the groove spacing a and Groove depth t are dimensioned as in Fig. 4.
- the pressing surface 111 of the brushes 11 with one Grooving, as described, is advantageous also the pressing surface 111 of the brushes 11 with one Grooving, as described, to be provided so that the force-fitting pressing of the brushes 11 onto the commuator 10 the grooving on the pressing surface 111 and the Groove 17 on the commutator 10 interlock, whereby the Brushes 11 are practically tracked over the two creases and not significant in the direction of the commutator axis 18 can swing.
- 6 - 11 are different versions of the Pressing surface 111 of the brushes 11 shown, the Press-on surface 111 of the cross-sectional area of the brushes 11 equivalent.
- the pressing surface 111 is elliptical or oval, trapezoidal in Fig. 7 and wedge-shaped in Fig. 8 educated.
- the pressing surface is made of an oval Surface section 19 and a rectangular Surface section 20 composed.
- the Press-on surface 111 a trapezoidal surface section 21 and a rectangular surface section 20, while the Press-on surface 111 in FIG. 11 has a triangular shape Surface section 22 and a rectangular Surface section 20 has.
- the rectangular area section 20 can also be square in all exemplary embodiments be formed.
- All variants of the pressing surface 111 of the Brushes 11 have in common that the axial width of the Pressing surface 11, starting from the leading edge 24 of the Brush 11 over at least part of the direction of rotation Commutator 10 extending depth of the pressing surface 111 steadily increasing. 6 - 11 is the direction of rotation of the Commutator 10 marked by arrow 23. The The leading edge 24 of the brushes 11 is in the direction of rotation front edge of the brushes 11. This design of the Press-on surface 111 of the brushes 11 improves this Vibration behavior of the brushes 11 in the operation of the electrical machine.
Landscapes
- Motor Or Generator Current Collectors (AREA)
Description
Die Erfindung geht aus von einer Stromwendevorrichtung für elektrische Maschinen der im Oberbegriff des Anspruchs 1 definierten Gattung.The invention relates to a power turning device for Electrical machines in the preamble of claim 1 defined genus.
Solche Stromwendevorrichtungen, wie sie beispielsweise in der DE 40 16 663 C2 beschrieben sind, besitzen üblicherweise einen zylinderförmigen Kommutator, auch Kollektor oder Stromwender genannt, der aus einer Vielzahl von axial ausgerichteten Lamellen zusammengesetzt ist, die gegeneinander isoliert sind und an jeweils einer Windung einer Ankerwicklung angeschlossen sind. Die Ankerwicklung ist in in einem Eisenblechpaket ausgestanzten Ankernuten eines Rotors oder Läufers aufgenommen, der zusammen mit dem Kommutator drehfest auf einer Rotor-, Anker- oder Läuferwelle sitzt, die bei elektrischen Motoren die Abtriebswelle und bei elektrischen Generatoren die Antriebswelle der elektrischen Maschine darstellt. Die Bürsten, als Kohle-, Stromwender-, Kollektor- oder Kommutatorbürsten bezeichnet, sind in sog. Bürstenköchern axial verschieblich aufgenommen und werden durch sog. Bürstenfedern mit ihrer dem Kommutator zugekehrten Andruck- oder Aufpreßfläche auf den Außenmantel des Kommutators aufgepreßt. Die radial ausgerichteten Bürstenköcher sind an einem Bürstenhalter befestigt. Bei rotierendem Kommutator führen die Bürsten je nach Bauart des Bürstenhalters mehr oder weniger große Schwingungen aus, die zu einer nicht unbeträchtlichen Geräuschentwicklung führen. Gleichzeitig wird aber dadurch auch der Stromübergang zwischen Kollektorlamellen und den Bürsten beeinträchtigt, was zu einer höheren Stromdichte an der Übergangsstelle führt, die sich wiederum negativ auf den Verschleiß und die Lebensdauer der Bürsten sowie auf den Wirkungsgrad der Maschine auswirkt.Such power turning devices, such as those in the DE 40 16 663 C2 are described, usually have one cylindrical commutator, also collector or commutator called that of a variety of axially aligned Is composed of slats that are isolated from each other and connected to one turn of an armature winding are. The armature winding is in an iron sheet package punched-out anchor grooves of a rotor or rotor added, which rotates together with the commutator a rotor, armature or rotor shaft that sits at electric motors the output shaft and in electric Generators the drive shaft of the electrical machine represents. The brushes, as coal, commutator, collector or commutator brushes are in so-called brush cases axially displaceable and are so-called. Brush springs with their pressure switch facing the commutator or pressing surface on the outer jacket of the commutator pressed. The radially aligned brush holder is on attached to a brush holder. With rotating commutator Depending on the design of the brush holder, the brushes lead more or less large vibrations that don't result in a inconsiderable noise. At the same time but also the current transfer between collector fins and the brushes impaired, resulting in a higher Current density at the transition point, which in turn leads negative for wear and the life of the brushes as well as the efficiency of the machine.
Die erfindungsgemäße Stromwendevorrichtung hat demgegenüber den Vorteil, daß durch die konkave Ausformung des Kommutators längs seines Außenmantels die Schwingungsamplitude der Bürsten in axialer Richtung erheblich eingeschränkt werden. Dies wird noch dadurch verbessert, wenn gemäß einer bevorzugten Ausführungsform der Erfindung der Außenmantel des Kommutators mit einer Rillung oder Riffelung versehen wird, die eine Art Zwangsführung der Bürsten auf der Kommutatoroberfläche bewirkt. Diese Zwangsführung ist optimal, wenn gemäß einer vorteilhaften Ausgestaltung der Erfindung die Aufpreßfläche der Kommutatorbürsten mit einer gleichartigen Rillung oder Riffelung versehen wird, so daß die Bürsten über die beiden nunmehr in Eingriff stehenden Rillungen oder Riffelungen quasi in Umfangsrichtung des Kommutators spurgeführt sind. Bei nicht mit einer Rillung versehenen Bürsten wird sich eine solche Spurführung erst nach kurzem Gebrauch mit dem ersten Abrieb der Bürsten in der Größenordnung der Rillentiefe einstellen. In contrast, the power turning device according to the invention has the advantage that the concave shape of the commutator the vibration amplitude of the brushes along its outer surface be considerably restricted in the axial direction. this will further improved if according to a preferred Embodiment of the invention, the outer jacket of the commutator is provided with scoring or corrugation, which is a kind Forced guidance of the brushes on the commutator surface causes. This forced guidance is optimal if according to a advantageous embodiment of the invention, the pressing surface the commutator brushes with a similar grooving or Corrugation is provided so that the brushes over the two now engaging grooves or corrugations quasi are guided in the circumferential direction of the commutator. With not with grooved brushes will become one Tracking only after a short use with the first abrasion the brushes in the order of the groove depth.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Stromwendevorrichtung möglich.By the measures listed in the other claims are advantageous developments and improvements in Claim 1 specified turning device possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung sind die Lamellen des Kommutators schräg zur Kommutatorachse ausgerichtet. Durch dieses Schrägstellen der Kommutatorlamellen wird der Gleitübergang der Bürsten von einer Lamelle zu nächsten verbessert und sog. Lamellensprünge, die aus toleranzbedingten, unterschiedlichen Radialhöhen der Kommutatorlamellen resultieren, abgemildert, wodurch das Schwingungsverhalten der Bürsten in Radialrichtung verbessert wird.According to an advantageous embodiment of the invention the slats of the commutator at an angle to the commutator axis aligned. By tilting the Commutator lamellae becomes the sliding transition of the brushes from one slat to the next improved and so-called slat jumps, which from tolerance-dependent, different radial heights of the Commutator lamellae result, softened, which means that Radial vibration behavior of the brushes improved becomes.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist die Aufpreßfläche der Bürsten so ausgebildet, daß ihre axiale Breite von der auflaufenden Kante aus über mindestens einen Teil der in Drehrichtung des Kommutators sich erstreckenden Tiefe der Aufpreßfläche stetig zunimmt. Die auflaufende Kante der Bürste ist die in Drehrichtung des Kommutators vorn liegende Kante der Bürsten. Mit dieser konstruktiven Gestaltung der Bürsten-Aufpreßfläche wird ein ähnlicher Effekt, wie vorstehend beschrieben, erzielt und damit ebenfalls die Schwingung der Bürsten in Radialrichtung gedämpft.According to an advantageous embodiment of the invention the pressing surface of the brushes designed so that their axial Width from the leading edge over at least one Part of the extending in the direction of rotation of the commutator Depth of the press surface increases steadily. The leading edge the brush is the one in the direction of rotation of the commutator at the front lying edge of the brushes. With this constructive Design of the brush press surface becomes a similar one Effect achieved as described above and thus also the vibration of the brushes in the radial direction attenuated.
Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen in schematischer Darstellung:
- Fig. 1
- eine Seitenansicht einer Stromwendevorrichtung für eine elektrische Maschine,
- Fig. 2 und 3
- jeweils eine Seitenansicht eines Kommutators der Stromwendevorrichtung in Fig. 1 gemäß zweier weiterer Ausführungsbeispiele,
- Fig. 4
- eine vergrößerte Darstellung des Ausschnitts IV in Fig. 2 im Längsschnitt,
- Fig. 5
- eine gleiche Darstellung wie in Fig. 4 gemäß einem weiteren Ausführungsbeispiel,
- Fig. 6 bis 11
- jeweils eine Draufsicht einer Bürstenaufpreßfläche einer Bürste der Stromwendevorrichtung in Fig. 1 in sechs verschiedenen Ausführungsbeispielen.
- Fig. 1
- 2 shows a side view of a power turning device for an electrical machine,
- 2 and 3
- 1 shows a side view of a commutator of the power reversing device in FIG. 1 according to two further exemplary embodiments,
- Fig. 4
- 2 shows an enlarged view of section IV in FIG. 2 in longitudinal section,
- Fig. 5
- 4 shows the same representation as in FIG. 4 according to a further exemplary embodiment,
- 6 to 11
- in each case a top view of a brush press-on surface of a brush of the power turning device in FIG. 1 in six different exemplary embodiments.
Die in Fig. 1 schematisch dargestellte Stromwendevorrichtung
für eine elektrische Maschine umfaßt einen Kommutator 10, der
drehfest auf einer hier nicht dargestellten Rotorwelle des
Rotors der elektrischen Maschine sitzt, sowie mindestens zwei
Bürsten 11 zur Stromführung, die undrehbar im Gehäuse der
elektrischen Maschine gehalten sind. Der Kommutator 10 ist aus
einer Vielzahl von zur Kommutatorachse 18 axial
ausgerichteten, stromleitenden Kommutatorlamellen 12
zusammengesetzt, die in Umfangsrichtung des Kommutators 10
aneinanderliegen und gegeneinander isoliert sind. Die
Isolierflächen sind mit 13 bezeichnet. An dem einen Stirnende
des Kommutators 10 laufen die Lamellen 12 in Lamellenhaken 14
auf, die zum Anschluß der Rotorwicklung dienen.The power turning device shown schematically in Fig. 1
for an electrical machine comprises a
Die Bürsten 11 sind in Bürstenköchern 15 axial verschieblich
aufgenommen, wobei die Bürstenköcher 15 an einem im
Maschinengehäuse drehfest gehaltenen Bürstenhalter 16 so
befestigt sind, daß die Bürsten 11 radial zum Kommutator 10
ausgerichtet sind. Eine hier nicht dargestellte Bürstenfeder,
die auf der vom Kommutator 10 abgekehrten Stirnseite der
Bürste 11 mit Federdruck aufliegt, preßt die Bürste 11 mit
ihrer Aufpreßfläche 111 kraftschlüssig auf den Umfang des
Kommutators 10 auf.The
Um die beim Rotieren des Kommutators 10 entstehenden
Bürstenschwingungen zu bedämpfen und die Schwingungsamplitude
möglichst klein zu halten, ist der Außenmantel des Kommutators
10 nicht zylinderförmig ausgeführt, sondern konkav geformt.
Bei dem in Fig. 2 dargestellten Kommutator 10 ist noch
zusätzlich der Außenmantel mit einer Riffelung oder Rillung 17
versehen, die in Fig. 4 ausschnittweise vergrößert im Schnitt
dargestellt ist. Wie dort zu erkennen ist, ist die Rillung 17
als Geradverzahnung mit symmetrischen Zahnflanken ausgeführt,
wobei der Rillenabstand a, also der Abstand zwischen zwei
Zahnspitzen, ca. 0,2 - 0,6 mm und die Rillentiefe t, also der
Abstand von Zahnspitze und Zahngrund, ca. 0,1 - 0,4 mm beträgt.
In Fig. 5 ist ein weiteres Ausführungsbeispiel für eine
Rillung 17 dargestellt. Hier weist die Rillung eine
sinusförmige Wellung auf, wobei der Rillenabstand a und
Rillentiefe t wie in Fig. 4 bemessen sind.To those that arise when the
Wie hier nicht weiter dargestellt ist, ist es vorteilhaft,
auch die Aufpreßfläche 111 der Bürsten 11 mit einer solchen
Rillung, wie beschrieben, zu versehen, so daß beim
kraftschlüssigen Aufpressen der Bürsten 11 auf den Kommuator
10 die an der Aufpreßfläche 111 vorhandene Rillung und die
Rillung 17 am Kommutator 10 ineinandergreifen, wodurch die
Bürsten 11 über die beiden Rillungen quasi spurgeführt werden
und in Richtung der Kommutatorachse 18 nicht nennenswert
schwingen können.As is not shown further here, it is advantageous
also the
Bei dem in Fig. 3 dargestellten Kommutator 10 sind die
Lamellen 12 nicht wie bei den beiden Kommutatoren 10 in Fig. 1
und 2 parallel zur Kommutatorachse 18 ausgerichtet, sondern
unter einem kleinen spitzen Winkel α gegen die Kommutatorachse
18 angestellt, so daß sie zwar wiederum parallel zueinander
aber zur Kommutatorachse 18 schräg verlaufen. Durch diese
Schrägstellung der Kommutatorlamellen 12 wird der
Gleitübergang der Bürsten 11 von einer Lamelle 12 zur nächsten
verbessert und sog. Lamellensprünge, die aus
toleranzbedingten, unterschiedlichen Radialhöhen der
Kommutatorlamellen 12 resultieren, wesentlich abgemildert, was
sich günstig auf das Schwingungsverhalten der Bürsten 11
auswirkt.In the
In Fig. 6 - 11 sind verschiedene Ausführungen der
Aufpreßfläche 111 der Bürsten 11 dargestellt, wobei die
Aufpreßfläche 111 der Querschnittsfläche der Bürsten 11
entspricht. In Fig. 6 ist die Aufpreßfläche 111 elliptisch
oder oval, in Fig. 7 trapezförmig und in Fig. 8 keilförmig
ausgebildet. In Fig. 9 ist die Aufpreßfläche aus einem ovalen
Flächenabschnitt 19 und einem rechteckförmigen
Flächenabschnitt 20 zusammengesetzt. In Fig. 10 weist die
Aufpreßfläche 111 einen trapezförmigen Flächenabschnitt 21 und
einen rechteckförmigen Flächenabschnitt 20 auf, während die
Aufpreßfläche 111 in Fig. 11 einen dreieckförmigen
Flächenabschnitt 22 und einen rechteckförmigen
Flächenabschnitt 20 hat. Der rechteckförmige Flächenabschnitt
20 kann in allen Ausführungsbeispielen auch quadratisch
ausgebildet werden. Allen Varianten der Aufpreßfläche 111 der
Bürsten 11 ist gemeinsam, daß die axiale Breite der
Aufpreßfläche 11, ausgehend von der auflaufenden Kante 24 der
Bürsten 11 über mindestens einen Teil der in Drehrichtung des
Kommutators 10 sich erstreckenden Tiefe der Aufpreßfläche 111
stetig zunimmt. In Fig. 6 - 11 ist die Drehrichtung des
Kommutators 10 durch den Pfeil 23 gekennzeichnet. Die
auflaufende Kante 24 der Bürsten 11 ist die in Drehrichtung
vordere Kante der Bürsten 11. Auch diese Gestaltung der
Aufpreßfläche 111 der Bürsten 11 verbessert das
Schwingungsverhalten der Bürsten 11 im Betrieb der
elektrischen Maschine.6 - 11 are different versions of the
Claims (8)
- Commutation apparatus for electrical machines having a commutator (10) which is composed of conductive laminates (12) and having current-carrying brushes (11) which are aligned essentially radially with respect to the commutator axis (18) and are seated by being pushed onto the outer surface of the commutator (10), characterized in that the outer surface of the commutator (10) has a concave shape.
- Apparatus according to Claim 1, characterized in that the outer surface of the commutator (10) is provided with a grooved pattern (17).
- Apparatus according to Claim 2, characterized in that the grooved pattern (17) is a toothed system having symmetrical tooth flanks or a sinusoidal wave pattern.
- Apparatus according to Claim 2 or 3, characterized in that the groove depth (t) is approximately 0.1 - 0.4 mm, and the groove interval (a) is approximately 0.2 - 0.6 mm.
- Apparatus according to one of Claims 2 - 4, characterized in that the push-on surface (111), which rests on the outer surface of the commutator (10), of the brushes (11) has an identical grooved pattern.
- Apparatus according to one of Claims 1 - 5, characterized in that the laminates (12) of the commutator (10) are aligned obliquely with respect to the commutator axis (18).
- Apparatus according to one of Claims 1 - 6, characterized in that the axial width of the push-on surface (111) of the brushes (11), which is seated on the outer surface of the commutator (10), measured from the leading edge (24) seen in the rotation direction (23) of the commutator (10), increases continuously over at least a portion of the depth of the push-on surface (111) extending in the rotation direction (23) of the commutator (10).
- Apparatus according to Claim 7, characterized in that the push-on surface (111) is trapezoidal, wedge-shaped or oval, or is composed of a rectangular or square surface section (20) and of a trapezoidal, triangular or oval surface section (21, 22, 19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19826883A DE19826883A1 (en) | 1998-06-17 | 1998-06-17 | Power turning device for electrical machines |
| DE19826883 | 1998-06-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0966072A2 EP0966072A2 (en) | 1999-12-22 |
| EP0966072A3 EP0966072A3 (en) | 2000-09-13 |
| EP0966072B1 true EP0966072B1 (en) | 2002-03-13 |
Family
ID=7871101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99107597A Expired - Lifetime EP0966072B1 (en) | 1998-06-17 | 1999-04-16 | Commutator device for electrical machines |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0966072B1 (en) |
| DE (2) | DE19826883A1 (en) |
| ES (1) | ES2174552T3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10058872A1 (en) * | 2000-11-27 | 2002-06-06 | Bsh Bosch Siemens Hausgeraete | Brush for dynamo-electrical machine, especially electric motor, has incident brush edge at least partly inclined with respect to lamella or lamella edge of commutator |
| US6657354B2 (en) * | 2000-12-06 | 2003-12-02 | Asmo Co., Ltd. | Dynamo-electric machine having commutator and manufacturing method thereof |
| FR2889628B1 (en) * | 2005-08-08 | 2007-11-09 | Valeo Systemes Dessuyage | BROOM AND ROTATING ELECTRIC MACHINE EQUIPPED WITH SUCH A BROOM |
| DE102010064321A1 (en) * | 2010-12-29 | 2012-07-05 | Robert Bosch Gmbh | Commutator and manufacturing process for it and electric machine |
| DE102012218095A1 (en) * | 2012-10-04 | 2014-04-10 | Robert Bosch Gmbh | Sliding contact device for electrical machine for motor car, has contact ring including external surface that is equipped with surface structure which is distributed and arranged with irregular grooves |
| FR2998113B1 (en) * | 2012-11-15 | 2016-01-01 | Valeo Equip Electr Moteur | BROOM FOR ROTATING ELECTRIC MACHINE |
| DE102013226895A1 (en) * | 2013-12-20 | 2015-09-24 | Robert Bosch Gmbh | Electric generator |
| DE102014214075A1 (en) * | 2014-07-18 | 2016-01-21 | Robert Bosch Gmbh | Electric machine with special contact brush geometry |
| DE102014225515A1 (en) * | 2014-12-11 | 2016-06-16 | Robert Bosch Gmbh | Commutation device for an electrical machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2257162A1 (en) * | 1974-01-04 | 1975-08-01 | Preux Roger | Switch with rotary collector - has metal contact strips on collector inclined w.r.t. collector axis |
| DE2643191A1 (en) * | 1976-09-22 | 1978-03-23 | Siemens Ag | Commutator for electrical machine - has skewed laminations to provide smoother commutation and mechanical running |
| US4638202A (en) * | 1985-09-11 | 1987-01-20 | Resinoid Engineering Corporation | Commutator and method of making same |
| GB2185638B (en) * | 1986-01-22 | 1989-11-01 | Johnson Electric Ind Mfg | A commutator for a d c motor |
| US5049772A (en) * | 1990-09-10 | 1991-09-17 | United Technologies Corporation | Reduced noise commutator |
-
1998
- 1998-06-17 DE DE19826883A patent/DE19826883A1/en not_active Withdrawn
-
1999
- 1999-04-16 ES ES99107597T patent/ES2174552T3/en not_active Expired - Lifetime
- 1999-04-16 DE DE59900970T patent/DE59900970D1/en not_active Expired - Lifetime
- 1999-04-16 EP EP99107597A patent/EP0966072B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0966072A3 (en) | 2000-09-13 |
| EP0966072A2 (en) | 1999-12-22 |
| DE19826883A1 (en) | 1999-12-23 |
| ES2174552T3 (en) | 2002-11-01 |
| DE59900970D1 (en) | 2002-04-18 |
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