WO2002019503A1 - Armature for an electrical machine - Google Patents

Armature for an electrical machine Download PDF

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Publication number
WO2002019503A1
WO2002019503A1 PCT/DE2001/003270 DE0103270W WO0219503A1 WO 2002019503 A1 WO2002019503 A1 WO 2002019503A1 DE 0103270 W DE0103270 W DE 0103270W WO 0219503 A1 WO0219503 A1 WO 0219503A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminated core
electrical machine
lamella
armature
carbon brush
Prior art date
Application number
PCT/DE2001/003270
Other languages
German (de)
French (fr)
Inventor
Andreas Ewert
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2002019503A1 publication Critical patent/WO2002019503A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/04—Connections between commutator segments and windings

Definitions

  • the invention relates to an armature for an electrical machine according to the preamble of claim 1.
  • An electric motor armature is known from DE 198 33 802 AI, in which carbon brushes and commutator hooks are arranged on one side of a laminated core, as a result of which space is not used. Control electronics are often also arranged on this side, so that the installation space there is scarce. However, this is disadvantageous, in particular in the case of a flat motor construction and a general reduction in installation space.
  • the armature according to the invention for an electrical machine with the characterizing features of claim 1 has the advantage that, in a simple manner, by a certain arrangement of components in the installation space Space for an electrical machine is used more efficiently.
  • an axial projection of a lamella on one side of a laminated core with a winding corresponds approximately to the width of a carbon brush, because in this way a length of the lamella is optimized for the smallest dimension and installation space is not wasted.
  • FIG. 1 shows a partial sectional view of an armature according to the invention for an electrical machine
  • FIG. 2 shows a partial section along the line II-II of FIG. 1. Description of the embodiment
  • An armature 1 according to the invention for example for an electric motor, includes from a rotor shaft 3 on which, for example, a carrier body 5 is arranged.
  • a generator can also be used as the electrical machine.
  • a laminated core 7, for example consisting of at least one laminated metal sheet, with a winding 23 is arranged on the rotor shaft 3.
  • the carrier body 5 is fastened on the rotor shaft 3, for example by press fitting, gluing or other fastening methods.
  • At least one lamella 11 is arranged on the carrier body 5 on the circumference of the carrier body 5 and 5, 11 form a commutator 21.
  • the lamella 11 has a commutator hook 13, to which a winding wire 15 is connected.
  • At least one carbon brush 17 rests on the lamella 11.
  • the armature 1 has an axis of symmetry 19. An electric current flows onto the lamella 11 via the carbon brush 17 and flows into the winding 23 of the laminated core 7 via the winding wire 15.
  • the carbon brush 17 is arranged on a first side 27 of the laminated core 7.
  • the commutator hook 13 is arranged on a second side 29 of the laminated core 7 lying at a distance from the first side 27 in the direction of the axis of symmetry 19.
  • the lamella 11 protrudes from the laminated core 7 with an axial projection d1 on the first side 27.
  • the axial projection dl corresponds approximately to a width dk of the carbon brush 17, so that the installation space is optimally used and no unused installation space is created.
  • the commutator hook 13 can protrude somewhat on the second side 29 of the laminated core 7, because on this side of the laminated core 7 there is sufficient installation space, that is to say an axial projection.
  • a ball bearing 35 is arranged, which projects beyond the winding 23 on the second side 29. As long as the commutator hook 13 does not protrude beyond the ball bearing 35 in the axial direction, no additional installation space is necessary due to the commutator hook 13.
  • the commutator hook 13 can, however, be arranged at least partially in the axial length within the interior enclosed by the winding 23. This is made possible as follows. For the connection process of winding wire 15 and commutator hook 13, the lamella 11 must protrude clearly over the winding 23 on the second side 29. After the connection process has taken place, the lamella 11 with the carrier body 5 is at least partially pushed in the direction of the carbon brush 17 into the interior of the winding 23 until a length d1 approximately corresponds to a width dk of the carbon brush 17. The position of the lamella 11 relative to the laminated core 7, in which the connection process between the winding wire 15 and the commutator hook 13 takes place, is indicated in FIG. 1 by a dashed line.
  • the laminated core 7 can be moved relative to the lamella 11 along the axis of symmetry 19.
  • FIG. 2 shows a partial area of a radial cross section along the line II-II of FIG. 1.
  • the winding 23 is arranged between pole teeth 41 of the laminated core 7.
  • a first insulation layer 37 is present, for example, on the outside of the laminated core 7.
  • the winding wire 15 can already be insulated, so that the first insulation layer 37 can be very thin or it is not necessary.
  • the laminated core 7 each has a hole 45 through which at least one lamella 11 runs from the first side 27 to the second side 29. This hole 45 also has a second insulation layer 39, which prevents an electrical short circuit between the lamella 11 and the laminated core 7.
  • the lamella 11 can also be insulated in the region that runs in the laminated core 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

An armature for an electrical machine according to the prior art has the carbon brush and the commutator hooks on one side of a laminated core. This increases the axial construction length of an electromotor. The inventive armature for an electrical machine has commutator hooks (13) that are situated on a different side (29) of the laminated core (7) to the carbon brushes (17). This measure reduces the axial construction length of an electrical machine.

Description

Anker für eine elektrische MaschineAnchor for an electrical machine
Stand der TechnikState of the art
Die Erfindung geht aus von einem Anker für eine elektrische Maschine nach der Gattung des Anspruchs 1.The invention relates to an armature for an electrical machine according to the preamble of claim 1.
Aus der DE 198 33 802 AI ist ein Elektromotoranker bekannt, bei dem Kohlebürsten und Kommutatorhaken auf einer Seite eines Blechpakets angeordnet sind, wodurch Bauraum nicht genutzt wird. Oft wird auf dieser Seite auch noch eine Steuerungselektronik angeordnet, so dass der Bauraum dort knapp wird. Insbesondere bei einer flachen Motorbauweise und einer generellen Verringerung des Bauraums ist dies jedoch von Nachteil .An electric motor armature is known from DE 198 33 802 AI, in which carbon brushes and commutator hooks are arranged on one side of a laminated core, as a result of which space is not used. Control electronics are often also arranged on this side, so that the installation space there is scarce. However, this is disadvantageous, in particular in the case of a flat motor construction and a general reduction in installation space.
Vorteile der ErfindungAdvantages of the invention
Der erfindungsgemäße Anker für eine elektrische Maschine mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, dass auf einfache Art und Weise durch eine bestimmte Anordnung von Bauteilen im Bauraum der Bauraum für eine elektrische Maschine effizienter genutzt wird.The armature according to the invention for an electrical machine with the characterizing features of claim 1 has the advantage that, in a simple manner, by a certain arrangement of components in the installation space Space for an electrical machine is used more efficiently.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 genannten Ankers möglich.The measures listed in the dependent claims allow advantageous developments and improvements of the anchor mentioned in claim 1.
Es ist vorteilhaft, wenn ein axialer Überstand einer Lamelle auf einer Seite eines Blechpakets mit einer Wicklung ungefähr der Breite einer Kohlebürste entspricht, weil dadurch eine Länge der Lamelle auf die geringste Abmessung optimiert ist und Bauraum nicht ungenutzt bleibt.It is advantageous if an axial projection of a lamella on one side of a laminated core with a winding corresponds approximately to the width of a carbon brush, because in this way a length of the lamella is optimized for the smallest dimension and installation space is not wasted.
Weiterhin ist es vorteilhaft, einen Kommutatorhaken zumindest teilweise in axialer Länge unterhalb der Wicklung anzuordnen, weil dadurch Bauraum gespart wird.Furthermore, it is advantageous to arrange a commutator hook at least partially in axial length below the winding, because this saves installation space.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert .An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
Es zeigenShow it
Figur 1 eine teilweise Schnittdarstellung eines erfindungsgemäßen Ankers für eine elektrische Maschine, Figur 2 einen Teilausschnitt entlang der Linie II-II der Figur 1. Beschreibung des Ausführungsbeispiels1 shows a partial sectional view of an armature according to the invention for an electrical machine, FIG. 2 shows a partial section along the line II-II of FIG. 1. Description of the embodiment
Ein erfindungsgemässer Anker 1 bspw. für einen Elektromotor besteht u.a. aus einer Rotorwelle 3, auf der beispielsweise ein Trägerkörper 5 angeordnet ist . Als elektrische Maschine kann auch ein Generator verwendet werden.An armature 1 according to the invention, for example for an electric motor, includes from a rotor shaft 3 on which, for example, a carrier body 5 is arranged. A generator can also be used as the electrical machine.
Weiterhin ist auf der Rotorwelle 3 ein Blechpaket 7, bspw. bestehend aus zumindest einem Blechlaminat, mit einer Wicklung 23 angeordnet.Furthermore, a laminated core 7, for example consisting of at least one laminated metal sheet, with a winding 23 is arranged on the rotor shaft 3.
Der Trägerkörper 5 ist auf der Rotorwelle 3 bspw. durch Presspassung, Klebung oder andere Befestigungsmethoden, befestigt. Auf den Trägerkörper 5 ist zumindest eine Lamelle 11 am Umfang des Trägerkörpers 5 angeordnet, die 5, 11 einen Kommutator 21 bilden. Die Lamelle 11 hat einen Kommutatorhaken 13 , mit dem ein Wicklungsdraht 15 verbunden ist. Auf der Lamelle 11 liegt zumindest eine Kohlebürste 17 an. Der Anker 1 hat eine Symmetrieachse 19. Über die Kohlebürste 17 fließt ein elektrischer Strom auf die Lamelle 11, der über den Wicklungsdraht 15 in die Wicklung 23 des Blechpakets 7 fließt. Die Kohlebürste 17 ist auf einer ersten Seite 27 des Blechpakets 7 angeordnet. Der Kommutatorhaken 13 ist auf einer in Richtung der Symmetrieachse 19 mit Abstand zur ersten Seite 27 liegenden zweiten Seite 29 des Blechpakets 7 angeordnet. Die Lamelle 11 ragt mit einem axialen Überstand dl auf der ersten Seite 27 aus dem Blechpaket 7 hervor. Der axiale Überstand dl entspricht ungefähr einer Breite dk der Kohlebürste 17, so dass der Bauraum optimal ausgenutzt ist und kein ungenutzter Bauraum entsteht. Der Kommutatorhaken 13 kann auf der zweiten Seite 29 des Blechpakets 7 etwas überstehen, weil auf dieser Seite des Blechpakets 7 genügend Bauraum, d. h. axialer Vorsprung vorhanden ist. Im Bereich einer Fläche 33, hier durch gekreuzte Linien dargestellt, wird ein Kugellager 35 angeordnet, das über die Wicklung 23 auf der zweiten Seite 29 übersteht. Solange der Kommutatorhaken 13 nicht über das Kugellager 35 in axialer Richtung hinausragt, ist kein zusätzlicher Bauraum bedingt durch den Kommutatorhaken 13 notwendig.The carrier body 5 is fastened on the rotor shaft 3, for example by press fitting, gluing or other fastening methods. At least one lamella 11 is arranged on the carrier body 5 on the circumference of the carrier body 5 and 5, 11 form a commutator 21. The lamella 11 has a commutator hook 13, to which a winding wire 15 is connected. At least one carbon brush 17 rests on the lamella 11. The armature 1 has an axis of symmetry 19. An electric current flows onto the lamella 11 via the carbon brush 17 and flows into the winding 23 of the laminated core 7 via the winding wire 15. The carbon brush 17 is arranged on a first side 27 of the laminated core 7. The commutator hook 13 is arranged on a second side 29 of the laminated core 7 lying at a distance from the first side 27 in the direction of the axis of symmetry 19. The lamella 11 protrudes from the laminated core 7 with an axial projection d1 on the first side 27. The axial projection dl corresponds approximately to a width dk of the carbon brush 17, so that the installation space is optimally used and no unused installation space is created. The commutator hook 13 can protrude somewhat on the second side 29 of the laminated core 7, because on this side of the laminated core 7 there is sufficient installation space, that is to say an axial projection. In the area of a surface 33, shown here by crossed lines, a ball bearing 35 is arranged, which projects beyond the winding 23 on the second side 29. As long as the commutator hook 13 does not protrude beyond the ball bearing 35 in the axial direction, no additional installation space is necessary due to the commutator hook 13.
Der Kommutatorhaken 13 kann jedoch zumindest teilweise in axialer Länge innerhalb des von der Wicklung 23 umschlossenen Innenraums angeordnet sein. Dies wird wie folgt ermöglicht . Für den Verbindungsvorgang von Wicklungsdraht 15 und Kommutatorhaken 13 muß die Lamelle 11 in deutlicher Weise über die Wicklung 23 auf der zweiten Seite 29 herausragen. Nachdem der Verbindungsprozess stattgefunden hat, wird die Lamelle 11 mit dem Trägerkörper 5 in Richtung der Kohlebürste 17 zumindest teilweise in den Innenraum der Wicklung 23 hineingeschoben, bis eine Länge dl ungefähr einer Breite dk der Kohlebürste 17 entspricht. Die Position der Lamelle 11 zum Blechpaket 7, in der der Verbindungsvorgang zwischen Wicklungsdraht 15 und Kommutatorhaken 13 stattfindet, ist in der Figur 1 durch eine gestrichelte Linie angedeutet .The commutator hook 13 can, however, be arranged at least partially in the axial length within the interior enclosed by the winding 23. This is made possible as follows. For the connection process of winding wire 15 and commutator hook 13, the lamella 11 must protrude clearly over the winding 23 on the second side 29. After the connection process has taken place, the lamella 11 with the carrier body 5 is at least partially pushed in the direction of the carbon brush 17 into the interior of the winding 23 until a length d1 approximately corresponds to a width dk of the carbon brush 17. The position of the lamella 11 relative to the laminated core 7, in which the connection process between the winding wire 15 and the commutator hook 13 takes place, is indicated in FIG. 1 by a dashed line.
Alternativ kann das Blechpaket 7 relativ zur Lamelle 11 entlang der Symmetrieachse 19 verschoben werden.Alternatively, the laminated core 7 can be moved relative to the lamella 11 along the axis of symmetry 19.
Figur 2 zeigt einen Teilbereich eines radialen Querschnitts entlang der Linie II-II der Figur 1. Zwischen Polzähnen 41 des Blechpakets 7 ist die Wicklung 23 angeordnet. Zur elektrischen Isolation zwischen der Wicklung 23 und dem Statorpolzahn 41 ist bspw. auf der Außenseite des Blechpakets 7 eine erste Isolationsschicht 37 vorhanden. Ebenso kann der Wicklungsdraht 15 schon isoliert sein, so dass die erste Isolationsschicht 37 sehr dünn sein kann oder sie nicht notwendig ist. Das Blechpaket 7 hat je ein Loch 45, durch das wenigstens eine Lamelle 11 von der ersten Seite 27 zu der zweiten Seite 29 verläuft. Auch dieses Loch 45 hat eine zweite Isolationsschicht 39, die einen elektrischen Kurzschluss zwischen der Lamelle 11 und dem Blechpaket 7 verhindert .FIG. 2 shows a partial area of a radial cross section along the line II-II of FIG. 1. The winding 23 is arranged between pole teeth 41 of the laminated core 7. For electrical insulation between the winding 23 and the stator pole tooth 41, a first insulation layer 37 is present, for example, on the outside of the laminated core 7. Likewise, the winding wire 15 can already be insulated, so that the first insulation layer 37 can be very thin or it is not necessary. The laminated core 7 each has a hole 45 through which at least one lamella 11 runs from the first side 27 to the second side 29. This hole 45 also has a second insulation layer 39, which prevents an electrical short circuit between the lamella 11 and the laminated core 7.
Alternativ kann auch die Lamelle 11 in dem Bereich isoliert sein, der in dem Blechpaket 7 verläuft. Alternatively, the lamella 11 can also be insulated in the region that runs in the laminated core 7.

Claims

Ansprüche Expectations
1. Anker (1) für eine elektrische Maschine, insbesondere für einen elektrischen Motor, mit einem Blechpaket (7) , mit einem Kommutator (21) , der zumindest eine Lamelle (11) mit einem Kommutatorhaken (13) hat, an die zumindest eine Kohlebürste (17) angreift,1. Anchor (1) for an electrical machine, in particular for an electric motor, with a laminated core (7), with a commutator (21) which has at least one lamella (11) with a commutator hook (13), to which at least one Carbon brush (17) attacks,
dadurch gekennzeichnet, dasscharacterized in that
die zumindest eine Kohlebürste (17) auf einer ersten Seite (27) des Blechpakets (7) und der Kommutatorhaken (13) auf einer zweiten Seite (29) des Blechpakets (7) angeordnet ist.the at least one carbon brush (17) is arranged on a first side (27) of the laminated core (7) and the commutator hook (13) on a second side (29) of the laminated core (7).
2. Anker nach Anspruch 1, dadurch gekennzeichnet, dass2. Anchor according to claim 1, characterized in that
ein axialer Überstand (dl) der Lamelle (11) auf der ersten Seite (27) des Blechpakets (7) ungefähr der Breite (dk) der Kohlebürste (17) entspricht.an axial projection (dl) of the lamella (11) on the first side (27) of the laminated core (7) approximately the width (dk) of the Carbon brush (17) corresponds.
3. Anker nach Anspruch 1, dadurch gekennzeichnet, dass3. Anchor according to claim 1, characterized in that
der Kommutatorhaken (13) zumindest teilweise in axialer Länge in einem durch die Wicklung (23) gebildeten Innenraum angeordnet ist .the commutator hook (13) is arranged at least partially in axial length in an interior space formed by the winding (23).
4. Anker nach Anspruch 1 oder 2 , dadurch gekennzeichnet, dass4. Anchor according to claim 1 or 2, characterized in that
das Blechpaket (7) zumindest ein Loch (45) für die Lamellen (11) hat. the laminated core (7) has at least one hole (45) for the fins (11).
PCT/DE2001/003270 2000-08-30 2001-08-28 Armature for an electrical machine WO2002019503A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10042513.5 2000-08-30
DE2000142513 DE10042513A1 (en) 2000-08-30 2000-08-30 Anchor for an electrical machine

Publications (1)

Publication Number Publication Date
WO2002019503A1 true WO2002019503A1 (en) 2002-03-07

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ID=7654257

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003270 WO2002019503A1 (en) 2000-08-30 2001-08-28 Armature for an electrical machine

Country Status (2)

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DE (1) DE10042513A1 (en)
WO (1) WO2002019503A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102983645A (en) * 2011-09-02 2013-03-20 德昌电机(深圳)有限公司 A brush motor, a fan, a motor rotor and a forming method for the motor rotor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2937139A1 (en) * 1979-09-13 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Motor for cooling fan in vehicle - has commutator segments extended beyond hub to form hooks to which rotor winding wires are easily attached
DE3329999A1 (en) * 1983-08-19 1985-03-07 Gebr. Märklin & Cie GmbH, 7320 Göppingen Rotor for electric motors in toys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2937139A1 (en) * 1979-09-13 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Motor for cooling fan in vehicle - has commutator segments extended beyond hub to form hooks to which rotor winding wires are easily attached
DE3329999A1 (en) * 1983-08-19 1985-03-07 Gebr. Märklin & Cie GmbH, 7320 Göppingen Rotor for electric motors in toys

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102983645A (en) * 2011-09-02 2013-03-20 德昌电机(深圳)有限公司 A brush motor, a fan, a motor rotor and a forming method for the motor rotor

Also Published As

Publication number Publication date
DE10042513A1 (en) 2002-03-14

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