WO2009007428A1 - Electric motor, in particular servomotor or drive motor in motor vehicles - Google Patents

Electric motor, in particular servomotor or drive motor in motor vehicles Download PDF

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Publication number
WO2009007428A1
WO2009007428A1 PCT/EP2008/059027 EP2008059027W WO2009007428A1 WO 2009007428 A1 WO2009007428 A1 WO 2009007428A1 EP 2008059027 W EP2008059027 W EP 2008059027W WO 2009007428 A1 WO2009007428 A1 WO 2009007428A1
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WO
WIPO (PCT)
Prior art keywords
electric motor
motor according
groove
winding
motor
Prior art date
Application number
PCT/EP2008/059027
Other languages
German (de)
French (fr)
Inventor
Torsten Wilharm
Tilo Koenig
Peter Hauser
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 WO2009007428A1 publication Critical patent/WO2009007428A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Definitions

  • Electric motor in particular actuating or drive motor in motor vehicles
  • the invention relates to an electric motor, in particular an actuating or drive motor in motor vehicles, according to the preamble of claim 1.
  • an electric motor which is designed as a permanent magnet-excited DC motor and can be used for example for an anti-lock brake system in a motor vehicle.
  • the electric motor has a stator and a rotor designed as an internal rotor. On the inner wall of the housing offset around the circumference arranged permanent magnets are arranged.
  • the rotor consists of a rotatably mounted armature shaft and an armature rotatably held on the shaft whose armature body has six distributed over the circumference and radially extending armature teeth, which are interconnected via a return ring.
  • An armature winding is arranged on each armature tooth.
  • the invention has for its object to provide a simple design measures a small-sized electric motor with high performance and long life.
  • the electric motor according to the invention which is used in particular as a control or drive motor in motor vehicles, for example for electric steering, gearbox, pumps or blowers, but possibly also as an electric drive motor in hybrid vehicles or as a servo motor for windshield wipers or windows, has a stator and a rotor of which at least one component has a plurality of radially extending carrier teeth, on each of which a coil is wound.
  • a stator and a rotor of which at least one component has a plurality of radially extending carrier teeth, on each of which a coil is wound.
  • In the wall of at least one carrier tooth at least one groove is provided, which is provided for receiving the coil wire.
  • the coil wire can be inserted, whereby a defined wire winding can be achieved around the carrier tooth, which would otherwise not be possible with the available winding space.
  • a defined wire winding leads to a better utilization of the space available for the winding between adjacent carrier teeth and thus to higher filling factors or lower material usage.
  • winding grooves can be introduced into the carrier teeth.
  • thread-shaped winding grooves which spiral in the manner of a thread around the lateral surface of the carrier tooth and in which the coil wire for producing the winding is inserted.
  • These winding grooves extend either over the entire circumference or, according to an alternative embodiment, only over part of the circumference of the carrier tooth, which is basically sufficient to ensure an orderly guidance of the wire winding.
  • the winding grooves extend in the radial direction either over the entire length or only over a partial length of the carrier tooth.
  • radial grooves extending in the radial direction may also be introduced into the carrier tooth, which are provided in particular for receiving the beginning or end of the coil wire.
  • both radial grooves and winding grooves expediently the radial grooves cut through the winding grooves.
  • an end-side connecting groove for connection between the radial groove and a winding groove may be provided, wherein the connecting groove is formed curved to the transition between the radial direction and the
  • the wire is advantageously first pulled over the radial groove and only then wound in the circumferential direction around the carrier tooth, whereby the wire section is clamped in the radial groove.
  • the winding takes place in particular in such a way that the coil wire is first guided over the radial groove from outside to inside and the coil is then placed over the winding spiral spirally radially from the inside to the outside. Once the radial outer end of the carrier tooth is reached by the coil, a jump follows from the first winding layer to the second winding layer adjacent to the outer diameter of the component. Since wire jumps occur when jumping between two winding layers, for which a corresponding winding space is required, this is advantageously carried out in the region of the outer diameter of the carrier tooth.
  • the component containing the support teeth preferably consists of a base body and an enveloping body enclosing the base body, in which the grooves are introduced.
  • Main body is made in particular of sheet metal, whereas the enveloping body consists of electrically insulating material, - A -
  • HüllSystem is advantageously made of plastic and in particular in the plastic injection molding process. Furthermore, it is possible to provide two Hüll analysesmaschine, each of which are to be placed on the base body from axially opposite sides and complement each other to form an at least approximately enclosing Hülloasa with enclosed interior for receiving the body.
  • the envelope has the function of an insulating mask is part of a powerful motor, which is used for highly dynamic, well-regulated applications and has a long service life even under critical environmental conditions.
  • the electric motor is advantageously designed as EC internal rotor motor, so as electronically commutated, brushless DC motor.
  • the component having the grooves is, in particular, the stator of the electric motor, in the interior of which the rotor rotates.
  • an application of the invention to the rotor of an electric motor is possible, which is formed with carrier teeth, in which at least one groove is introduced for receiving the coil wire.
  • the electric motor shown in the figure is an electronically commutated internal rotor motor comprising an annular stator 2 in a housing and an internal rotor 3.
  • the stator 2 consists of an outer support ring 5, from which extend radially inwardly over the circumference distributed a plurality of support teeth 6 to the remaining interior, which is for receiving the rotor. 3 is provided.
  • Each carrier tooth 6 is a carrier of a coil, which is energized to generate a magnetic field.
  • the carrier teeth 6 are formed integrally with the support ring 5.
  • the stator 2 consists of a base body and at least one enveloping body 4 enclosing the base body, wherein the base body is preferably made of sheet metal and the enveloping body is preferably formed as an electrically insulating plastic injection molded part, which is placed on the base body.
  • the base body is preferably made of sheet metal and the enveloping body is preferably formed as an electrically insulating plastic injection molded part, which is placed on the base body.
  • a radial groove 7 which extends substantially over the length of the carrier tooth 6 and also aligned with a groove portion 7a extending in extension of the introduced on the carrier tooth 6 radial groove 7 also extends radially across the width of the support ring 5.
  • the radial groove 7 merges into a curved connecting groove 9 which connects the radial groove 7 with a winding groove 8 which spirals over the circumference of each carrier tooth 6.
  • the winding groove or winding grooves 8 can occupy the entire lateral surface of the carrier tooth 7; if necessary, however, it is sufficient if the winding groove extends in the circumferential direction and / or in the longitudinal direction of the carrier tooth 6 only over a partial section.
  • the radial groove 7 can cut through the winding grooves 8.
  • the coil is produced in such a way that initially a coil wire is drawn from the groove portion 7a in the radial groove 7, is guided on the radially inner side of the support tooth 6 via the curved connecting groove 9 in the first, the radial inner side adjacent Wicklungsnut 8.
  • a coil wire is drawn from the groove portion 7a in the radial groove 7, is guided on the radially inner side of the support tooth 6 via the curved connecting groove 9 in the first, the radial inner side adjacent Wicklungsnut 8.
  • the wire section which is inserted into the radial groove 7, overlapped and clamped by the coil wire in the winding grooves 8.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

An electric motor has a stator and a rotor, of which at least one component has a plurality of radially running mount teeth with in each case one wound coil. A slot for accommodating the coil wire is introduced into the wall of at least one mount tooth.

Description

BeSchreibungDescription
Titeltitle
Elektromotor, insbesondere Stell- oder Antriebsmotor in KraftfahrzeugenElectric motor, in particular actuating or drive motor in motor vehicles
Die Erfindung bezieht sich auf einen Elektromotor, insbesondere einen Stell- oder Antriebsmotor in Kraftfahrzeugen, nach dem Oberbegriff des Anspruches 1.The invention relates to an electric motor, in particular an actuating or drive motor in motor vehicles, according to the preamble of claim 1.
Stand der TechnikState of the art
In der DE 10 2004 008 936 Al wird der Aufbau eines Elektromotors beschrieben, der als permanentmagneterregter Gleichstrommotor ausgebildet ist und beispielsweise für ein Antiblockiersystem in einem Kraftfahrzeug eingesetzt werden kann. Der Elektromotor weist einen Stator und einen als Innenläufer ausgeführten Rotor auf. An der Innenwand des Gehäuses sind über den Umfang versetzt angeordnete Permanentmagnete angeordnet. Der Rotor besteht aus einer drehbar gelagerten Ankerwelle und einem auf der Welle drehfest gehaltenen Anker, dessen Ankerkörper sechs über den Umfang verteilt angeordnete und radial sich erstreckende Ankerzähne aufweist, welche über einen Rückschlussring miteinander verbunden sind. Auf jedem Ankerzahn ist eine Ankerwicklung angeordnet.In DE 10 2004 008 936 Al, the structure of an electric motor is described, which is designed as a permanent magnet-excited DC motor and can be used for example for an anti-lock brake system in a motor vehicle. The electric motor has a stator and a rotor designed as an internal rotor. On the inner wall of the housing offset around the circumference arranged permanent magnets are arranged. The rotor consists of a rotatably mounted armature shaft and an armature rotatably held on the shaft whose armature body has six distributed over the circumference and radially extending armature teeth, which are interconnected via a return ring. An armature winding is arranged on each armature tooth.
Grundsätzlich ist bei derartigen Ankerkörpern darauf zu achten, dass ein ausreichend großer Wickelraum zum Aufwickeln des Spulendrahtes um den Trägerzahn zur Verfügung steht. Dieser Wickelraum ist üblicherweise aufgrund der größeren Anzahl von über den Umfang verteilten Trägerzähnen begrenzt.In principle, care should be taken with such anchor bodies that a sufficiently large winding space is available for winding the coil wire around the support tooth. This winding space is usually limited due to the larger number of distributed over the circumference of the carrier teeth.
Offenbarung der Erfindung Der Erfindung liegt die Aufgabe zugrunde, mit einfachen konstruktiven Maßnahmen einen klein bauenden Elektromotor mit hoher Leistung und langer Lebensdauer zu schaffen.Disclosure of the invention The invention has for its object to provide a simple design measures a small-sized electric motor with high performance and long life.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This object is achieved with the features of claim 1. The dependent claims indicate expedient developments.
Der erfindungsgemäße Elektromotor, welcher insbesondere als Stell- oder Antriebsmotor in Kraftfahrzeugen verwendet wird, beispielsweise für elektrische Lenkungen, Getriebesteller, Pumpen oder Gebläse, gegebenenfalls aber auch als elektrischer Antriebsmotor in Hybridfahrzeugen oder als Stellmotor für Scheibenwischer oder Fensterheber, weist einen Stator und einen Rotor auf, von denen mindestens ein Bauteil eine Mehrzahl radial verlaufender Trägerzähne besitzt, auf die jeweils eine Spule aufgewickelt ist. In die Wandung mindestens eines Trägerzahns ist mindestens eine Nut eingebracht, die zur Aufnahme des Spulendrahts vorgesehen ist. In diese Nut kann der Spulendraht eingelegt werden, wodurch eine definierte Drahtwicklung um den Trägerzahn erreicht werden kann, die sonst bei dem zur Verfügung stehenden Wickelraum nicht möglich wäre. Eine definierte Drahtwicklung führt zu einer besseren Ausnutzung des für die Wicklung zur Verfügung stehenden Raumes zwischen benachbarten Trägerzähnen und damit zu höheren Füllfaktoren oder geringerem Materialeinsatz. Darüber hinaus steigt die Symmetrie der Spulen bzw. deren Drahtlängen.The electric motor according to the invention, which is used in particular as a control or drive motor in motor vehicles, for example for electric steering, gearbox, pumps or blowers, but possibly also as an electric drive motor in hybrid vehicles or as a servo motor for windshield wipers or windows, has a stator and a rotor of which at least one component has a plurality of radially extending carrier teeth, on each of which a coil is wound. In the wall of at least one carrier tooth at least one groove is provided, which is provided for receiving the coil wire. In this groove, the coil wire can be inserted, whereby a defined wire winding can be achieved around the carrier tooth, which would otherwise not be possible with the available winding space. A defined wire winding leads to a better utilization of the space available for the winding between adjacent carrier teeth and thus to higher filling factors or lower material usage. In addition, the symmetry of the coils or their wire lengths increases.
Es können verschiedenartige Nuten in die Trägerzähne eingebracht sein. Möglich sind zum einen gewindeförmige Wicklungsnuten, die sich nach Art eines Gewindes spiralförmig um die Mantelfläche des Trägerzahnes winden und in die der Spulendraht zur Herstellung der Wicklung eingelegt wird. Diese Wicklungsnuten erstrecken sich entweder über den gesamten Umfang, oder aber, gemäß einer alternativen Ausführung auch nur über einen Teil des Umfanges des Trägerzahnes, was grundsätzlich ausreichend ist, um eine geordnete Führung der Drahtwicklung sicherzustellen. Die Wicklungsnuten erstrecken sich in Radialrichtung gesehen entweder über die gesamte Länge oder auch nur über eine Teillänge des Trägerzahnes.Various types of grooves can be introduced into the carrier teeth. Are possible on the one hand thread-shaped winding grooves, which spiral in the manner of a thread around the lateral surface of the carrier tooth and in which the coil wire for producing the winding is inserted. These winding grooves extend either over the entire circumference or, according to an alternative embodiment, only over part of the circumference of the carrier tooth, which is basically sufficient to ensure an orderly guidance of the wire winding. The winding grooves extend in the radial direction either over the entire length or only over a partial length of the carrier tooth.
Zusätzlich oder alternativ zu den Wicklungsnuten können auch in Radialrichtung verlaufende Radialnuten in den Trägerzahn eingebracht sein, die insbesondere zur Aufnahme des Anfanges oder Endes des Spulendrahtes vorgesehen sind. In der Ausführung, in der sowohl Radialnuten als auch Wicklungsnuten vorgesehen sind, durchschneiden zweckmäßigerweise die Radialnuten die Wicklungsnuten. Außerdem kann eine endseitige Verbindungsnut zur Verbindung zwischen der Radialnut und einer Wicklungsnut vorgesehen sein, wobei die Verbindungsnut gekrümmt ausgebildet ist, um den Übergang zwischen der Radialrichtung und derIn addition or as an alternative to the winding grooves, radial grooves extending in the radial direction may also be introduced into the carrier tooth, which are provided in particular for receiving the beginning or end of the coil wire. In the embodiment in which both radial grooves and winding grooves are provided, expediently the radial grooves cut through the winding grooves. In addition, an end-side connecting groove for connection between the radial groove and a winding groove may be provided, wherein the connecting groove is formed curved to the transition between the radial direction and the
Umfangsrichtung herzustellen. In jedem Fall wird der Draht vorteilhafterweise zunächst über die Radialnut gezogen und erst anschließend in Umfangsrichtung um den Trägerzahn gewickelt, wodurch der Drahtabschnitt in der Radialnut festgeklemmt wird.Produce circumferential direction. In any case, the wire is advantageously first pulled over the radial groove and only then wound in the circumferential direction around the carrier tooth, whereby the wire section is clamped in the radial groove.
Die Wicklung erfolgt insbesondere in der Weise, dass der Spulendraht zunächst über die Radialnut von außen nach innen geführt und die Wicklung anschließend über die Wicklungsnuten spiralförmig radial von innen nach außen gelegt wird. Sobald das radiale Außenende des Trägerzahnes von der Spule erreicht ist, folgt ein Sprung von der ersten Wicklungslage auf die zweite Wicklungslage benachbart zum Außendurchmesser des Bauteiles. Da beim Sprung zwischen zwei Wicklungslagen Drahtkreuzungen entstehen, wofür ein entsprechender Wicklungsraum benötigt wird, wird dies mit Vorteil im Bereich des Außendurchmessers des Trägerzahnes durchgeführt.The winding takes place in particular in such a way that the coil wire is first guided over the radial groove from outside to inside and the coil is then placed over the winding spiral spirally radially from the inside to the outside. Once the radial outer end of the carrier tooth is reached by the coil, a jump follows from the first winding layer to the second winding layer adjacent to the outer diameter of the component. Since wire jumps occur when jumping between two winding layers, for which a corresponding winding space is required, this is advantageously carried out in the region of the outer diameter of the carrier tooth.
Das die Trägerzähne enthaltende Bauteil besteht bevorzugt aus einem Grundkörper und einem den Grundkörper einfassenden Hüllkörper, in welchen die Nuten eingebracht sind. DerThe component containing the support teeth preferably consists of a base body and an enveloping body enclosing the base body, in which the grooves are introduced. Of the
Grundkörper ist insbesondere aus Blech gefertigt, wohingegen der Hüllkörper aus elektrisch isolierendem Material besteht, - A -Main body is made in particular of sheet metal, whereas the enveloping body consists of electrically insulating material, - A -
vorteilhaft aus Kunststoff und insbesondere im Kunststoff- Spritzgussverfahren herzustellen ist. Des Weiteren ist es möglich, zwei Hüllkörperteile vorzusehen, die jeweils von axial gegenüberliegenden Seiten auf den Grundkörper aufzusetzen sind und sich gemeinsam zu einem zumindest annähernd umschließenden Hüllkörper mit eingeschlossenem Innenraum zur Aufnahme des Grundkörpers ergänzen. Der Hüllkörper hat die Funktion einer Isoliermaske ist Teil eines leistungsfähigen Motors, der für hochdynamische, gut regelbare Anwendungen eingesetzt wird und eine hohe Lebensdauer auch unter kritischen Umgebungsbedingungen besitzt .is advantageously made of plastic and in particular in the plastic injection molding process. Furthermore, it is possible to provide two Hüllkörperteile, each of which are to be placed on the base body from axially opposite sides and complement each other to form an at least approximately enclosing Hüllkörper with enclosed interior for receiving the body. The envelope has the function of an insulating mask is part of a powerful motor, which is used for highly dynamic, well-regulated applications and has a long service life even under critical environmental conditions.
Der Elektromotor ist vorteilhafterweise als EC-Innenläufer- Motor, also als elektronisch kommutierter, bürstenloser Gleichstrommotor ausgebildet. Bei dem die Nuten aufweisenden Bauteil handelt es sich insbesondere um den Stator des Elektromotors, in dessen Innenraum der Rotor umläuft. Grundsätzlich ist aber auch eine Anwendung der Erfindung auf den Rotor eines Elektromotors möglich, der mit Trägerzähnen ausgebildet ist, in die mindestens eine Nut zur Aufnahme des Spulendrahts eingebracht ist.The electric motor is advantageously designed as EC internal rotor motor, so as electronically commutated, brushless DC motor. The component having the grooves is, in particular, the stator of the electric motor, in the interior of which the rotor rotates. In principle, however, an application of the invention to the rotor of an electric motor is possible, which is formed with carrier teeth, in which at least one groove is introduced for receiving the coil wire.
Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und der Zeichnung zu entnehmen, die einen Ausschnitt eines Elektromotors zeigt, der als EC-Innenläufer-Motor ausgeführt ist, wobei der Stator des Elektromotors radial verlaufende Trägerzähne zur Aufnahme von gewickelten Spulen aufweist und in die Wandung der Trägerzähne Radialnuten und spiralförmige Wicklungsnuten eingebracht sind.Further advantages and expedient embodiments can be found in the further claims, the description of the figures and the drawing, which shows a section of an electric motor, which is designed as EC-internal rotor motor, wherein the stator of the electric motor has radially extending support teeth for receiving wound coils and Radial grooves and helical winding grooves are introduced into the wall of the carrier teeth.
Bei dem in der Figur dargestellten Elektromotor handelt es sich um einen elektronisch kommutierten Innenläufer-Motor, der einen ringförmigen Stator 2 in einem Gehäuse und einen innen liegenden Rotor 3 umfasst. Der Stator 2 besteht aus einem außen liegenden Tragring 5, von dem aus sich radial nach innen über den Umfang verteilt eine Mehrzahl von Trägerzähnen 6 bis zum frei bleibenden Innenraum erstrecken, der zur Aufnahme des Rotors 3 vorgesehen ist. Jeder Trägerzahn 6 ist Träger einer Spule, die zur Erzeugung eines Magnetfeldes bestromt wird. Die Trägerzähne 6 sind einteilig mit dem Tragring 5 ausgebildet.The electric motor shown in the figure is an electronically commutated internal rotor motor comprising an annular stator 2 in a housing and an internal rotor 3. The stator 2 consists of an outer support ring 5, from which extend radially inwardly over the circumference distributed a plurality of support teeth 6 to the remaining interior, which is for receiving the rotor. 3 is provided. Each carrier tooth 6 is a carrier of a coil, which is energized to generate a magnetic field. The carrier teeth 6 are formed integrally with the support ring 5.
Der Stator 2 besteht aus einem Grundkörper und mindestens einem den Grundkörper einfassenden Hüllkörper 4, wobei der Grundkörper vorzugsweise aus Blech gefertigt ist und der Hüllkörper vorzugsweise als elektrisch isolierendes Kunststoff- Spritzgussteil ausgebildet ist, welches auf den Grundkörper aufgesetzt wird. Im Bereich der Trägerzähne 6 weist derThe stator 2 consists of a base body and at least one enveloping body 4 enclosing the base body, wherein the base body is preferably made of sheet metal and the enveloping body is preferably formed as an electrically insulating plastic injection molded part, which is placed on the base body. In the area of the support teeth 6, the
Hüllkörper Nuten 7, 8 und 9 auf, in die der Spulendraht gezogen und gewickelt wird. Vorgesehen ist eine Radialnut 7, die sich im Wesentlichen über die Länge des Trägerzahnes 6 erstreckt und außerdem mit einem Nutabschnitt 7a fluchtet, der in Verlängerung der am Trägerzahn 6 eingebrachten Radialnut 7 sich ebenfalls radial über die Breite des Tragringes 5 erstreckt. Auf der radial innen liegenden Seite des Trägerzahns 6 geht die Radialnut 7 in eine gekrümmte Verbindungsnut 9 über, die die Radialnut 7 mit einer Wicklungsnut 8 verbindet, die sich spiralförmig über den Umfang jedes Trägerzahnes 6 windet. Die Wicklungsnut bzw. Wicklungsnuten 8 können die gesamte Mantelfläche des Trägerzahnes 7 einnehmen; ggf. ist es aber ausreichend, wenn sich die Wicklungsnut in Umfangsrichtung und/oder in Längsrichtung des Trägerzahns 6 nur über einen Teilabschnitt erstreckt. Die Radialnut 7 kann die Wicklungsnuten 8 durchschneiden.Covering grooves 7, 8 and 9, in which the coil wire is pulled and wound. Provided is a radial groove 7, which extends substantially over the length of the carrier tooth 6 and also aligned with a groove portion 7a extending in extension of the introduced on the carrier tooth 6 radial groove 7 also extends radially across the width of the support ring 5. On the radially inner side of the carrier tooth 6, the radial groove 7 merges into a curved connecting groove 9 which connects the radial groove 7 with a winding groove 8 which spirals over the circumference of each carrier tooth 6. The winding groove or winding grooves 8 can occupy the entire lateral surface of the carrier tooth 7; if necessary, however, it is sufficient if the winding groove extends in the circumferential direction and / or in the longitudinal direction of the carrier tooth 6 only over a partial section. The radial groove 7 can cut through the winding grooves 8.
Die Spule wird in der Weise hergestellt, dass zunächst ein Spulendraht ausgehend von dem Nutabschnitt 7a in die Radialnut 7 eingezogen wird, an der radialen Innenseite des Trägerzahns 6 über die gekrümmte Verbindungsnut 9 in die erste, der radialen Innenseite benachbarten Wicklungsnut 8 geführt wird. Im weiteren Verlauf wird der Spiralform der Wicklungsnuten 8 folgend der Spulendraht radial von innen nach außen geführt; hierbei wird der Drahtabschnitt, welcher in die Radialnut 7 eingelegt ist, von dem Spulendraht in den Wicklungsnuten 8 übergriffen und festgeklemmt . The coil is produced in such a way that initially a coil wire is drawn from the groove portion 7a in the radial groove 7, is guided on the radially inner side of the support tooth 6 via the curved connecting groove 9 in the first, the radial inner side adjacent Wicklungsnut 8. In the further course of the spiral shape of the winding grooves 8 is guided following the coil wire radially from the inside to the outside; In this case, the wire section, which is inserted into the radial groove 7, overlapped and clamped by the coil wire in the winding grooves 8.

Claims

Ansprüche claims
1. Elektromotor (1), insbesondere Stell- oder Antriebsmotor in Kraftfahrzeugen, mit einem Stator (2) und einem Rotor (3), von denen mindestens ein Bauteil eine Mehrzahl radial verlaufender Trägerzähne (6) mit jeweils einer gewickelten Spule aufweist, dadurch gekennzeichnet, dass in die Wandung mindestens eines Trägerzahns (6) mindestens eine Nut zur Aufnahme des Spulendrahts eingebracht ist.1. Electric motor (1), in particular actuating or drive motor in motor vehicles, with a stator (2) and a rotor (3), of which at least one component has a plurality of radially extending carrier teeth (6) each having a wound coil, characterized in that at least one groove for receiving the coil wire is introduced into the wall of at least one carrier tooth (6).
2. Elektromotor nach Anspruch 1, dadurch gekennzeichnet, dass in die Wandung des Trägerzahns (6) gewindeförmige Wicklungsnuten (8) eingebracht sind.2. Electric motor according to claim 1, characterized in that in the wall of the carrier tooth (6) thread-shaped winding grooves (8) are introduced.
3. Elektromotor nach Anspruch 2, dadurch gekennzeichnet, dass die Wicklungsnuten (8) sich nur über einen Teil des Umfangs des Trägerzahns (6) erstrecken.3. Electric motor according to claim 2, characterized in that the winding grooves (8) extend over only a part of the circumference of the carrier tooth (6).
4. Elektromotor nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in die Wandung des Trägerzahns (6) eine in Radialrichtung verlaufende Radialnut (7) für den Spulendraht eingebracht ist.4. Electric motor according to one of claims 1 to 3, characterized in that in the wall of the carrier tooth (6) has a radially extending radial groove (7) is introduced for the coil wire.
5. Elektromotor nach Anspruch 2 oder 3 und 4, dadurch gekennzeichnet, dass die Radialnut (7) über eine gekrümmte Verbindungsnut (9) in eine Wicklungsnut (8) übergeht.5. Electric motor according to claim 2 or 3 and 4, characterized in that the radial groove (7) via a curved connecting groove (9) merges into a winding groove (8).
6. Elektromotor nach Anspruch 5, dadurch gekennzeichnet, dass die gekrümmte Verbindungsnut (9) auf der radial innen liegenden Seite der Radialnut (7) liegt. 6. Electric motor according to claim 5, characterized in that the curved connecting groove (9) on the radially inner side of the radial groove (7).
7. Elektromotor nach Anspruch 2 oder 3 und 4 bis 6, dadurch gekennzeichnet, dass die Radialnut (7) mindestens eine7. Electric motor according to claim 2 or 3 and 4 to 6, characterized in that the radial groove (7) at least one
Wicklungsnut (8) schneidet.Winding groove (8) cuts.
8. Elektromotor nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das die Trägerzähne (6) enthaltende Bauteil aus einem Grundkörper und mindestens einem den Grundkörper einfassenden Hüllkörper besteht, wobei die Nuten in den Hüllkörper eingebracht sind.8. Electric motor according to one of claims 1 to 7, characterized in that the carrier teeth (6) containing component consists of a base body and at least one body enclosing the enveloping body, wherein the grooves are introduced into the enveloping body.
9. Elektromotor nach Anspruch 8, dadurch gekennzeichnet, dass der Hüllkörper aus elektrisch isolierendem Material besteht.9. Electric motor according to claim 8, characterized in that the enveloping body consists of electrically insulating material.
10. Elektromotor nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Hüllkörper als Kunststoffteil ausgebildet ist.10. Electric motor according to claim 8 or 9, characterized in that the enveloping body is designed as a plastic part.
11. Elektromotor nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der in die Radialnut (7) eingezogene Abschnitt des Spulendrahts von den Wicklungen umgriffen ist.11. Electric motor according to one of claims 1 to 10, characterized in that in the radial groove (7) retracted portion of the coil wire is encompassed by the windings.
12. Elektromotor nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Elektromotor als EC-12. Electric motor according to one of claims 1 to 11, characterized in that the electric motor as EC
Innenläufer-Motor ausgeführt ist.Internal rotor motor is executed.
13. Elektromotor nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das die Nuten aufweisende Bauteil der Stator (2) ist. 13. Electric motor according to one of claims 1 to 12, characterized in that the grooves having the component of the stator (2).
PCT/EP2008/059027 2007-07-11 2008-07-10 Electric motor, in particular servomotor or drive motor in motor vehicles WO2009007428A1 (en)

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DE200710032223 DE102007032223A1 (en) 2007-07-11 2007-07-11 Electric motor, in particular actuating or drive motor in motor vehicles
DE102007032223.4 2007-07-11

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