EP1854198A1 - Electric motor - Google Patents

Electric motor

Info

Publication number
EP1854198A1
EP1854198A1 EP06722558A EP06722558A EP1854198A1 EP 1854198 A1 EP1854198 A1 EP 1854198A1 EP 06722558 A EP06722558 A EP 06722558A EP 06722558 A EP06722558 A EP 06722558A EP 1854198 A1 EP1854198 A1 EP 1854198A1
Authority
EP
European Patent Office
Prior art keywords
stator
electric motor
bearing seat
bearing
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06722558A
Other languages
German (de)
French (fr)
Inventor
Michael Bulatow
Andre Gornott
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.)
Brose Fahrzeugteile SE and Co KG
Original Assignee
Temic Automotive Electric Motors 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 Temic Automotive Electric Motors GmbH filed Critical Temic Automotive Electric Motors GmbH
Publication of EP1854198A1 publication Critical patent/EP1854198A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K1/148—Sectional cores
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine

Definitions

  • the invention relates to an electric motor having a rotor comprising a rotor shaft and a rotor body, and a stator having a stator laminated core with a plurality of stator laminations and at least one integrated bearing seat for receiving a bearing in which the rotor shaft is rotatably mounted , as well as methods for mounting such an electric motor.
  • the invention is particularly suitable, for example, for use in motor vehicles.
  • electric motors which are designed as small engines, play an important role due to the limited space.
  • Small motors are electric motors with small dimensions and usually have a power up to 1 kW.
  • Electric motors can be designed as internal rotor or external rotor motors.
  • Internal rotor motors have a fixed stator and an inner rotating rotor.
  • the rotor is coaxial, concentrically inserted into the stator.
  • the rotor concentrically surrounds the stator.
  • electric motors typically include a housing that protects the engine from external influences such as dirt or moisture.
  • the rotor or the rotor shaft must be rotatably supported by bearings.
  • the bearing of the rotor shaft is realized for example with one or more complex end shields.
  • stator has integrated bearing seats for receiving bearings in which the Rotorwelie is rotatably mounted.
  • a brushless DC motor comprising a shaft, a permanent magnet rotor and a stator with a plurality of pole shoes provided with windings, wherein two shells of non-magnetic material are provided, each having a bearing for the shaft and brackets for the Have pole pieces.
  • the invention has the object of providing an electric motor of the type mentioned in such a way that it is compact and as small as possible. Furthermore, it should be easy and inexpensive to manufacture.
  • the electric motor has a rotor comprising a rotor shaft and a rotor body, and a stator having a stator laminated core with a plurality of stator laminations and at least one integrated bearing seat for receiving a bearing in which the rotor shaft is rotatably mounted. Since the bearing is stressed by different forces, it makes sense to strengthen the bearing seat.
  • at least one end-side stator plate of the stator laminated core is designed such that it has means for reinforcing the bearing seat.
  • the means for reinforcement are designed as reinforcing anchors and arranged on the inner diameter of the end-side stator lamination.
  • the reinforcing anchors and the end-side stator plate are integrally formed.
  • stator laminations of the stator laminar packet have at least one side a lacquer layer, for example a baked enamel layer, and are connected to one another in a materially bonded manner by a chemical-thermal connection.
  • the coated stator laminations are first joined together to form a so-called stator laminations.
  • the stator lamination stack is heated briefly, whereby the lacquer layer, in particular the baked enamel layer, is made to melt and thus the stator laminations are firmly bonded together chemically-thermally.
  • stator laminated core In order to be able to provide windings to the stator laminated core, the stator laminated core, in particular the pole teeth of the stator core pack, must be electrically insulated.
  • the stator laminated core is preferably encapsulated with a plastic.
  • the bearing seat on the stator is formed during the encapsulation of the Stator Bleckpers.
  • the reinforcing anchors are angled before the encapsulation of the stator-Bleckpers and the injection of the bearing seat, in the direction in which the injection-molded bearing seat is located.
  • the Reinforcement anchor angled 90 °. After manufacturing the bearing seat, the bearing is pressed into the bearing seat.
  • the bearing can be placed in an injection mold and the bearing seat is practically "sprayed around" around the bearing in the injection mold during the encapsulation of the stator Bleckpers.
  • Fig. 1 shows an embodiment of the stator of the invention
  • FIG. 2 shows an embodiment of the end-side stator lamination of the electric motor according to the invention in a plan view
  • Fig. 3 is a partial view of an electric motor according to the invention in one
  • Fig. 1 shows an embodiment of a stator of the electric motor according to the invention in a perspective view.
  • the stator 1 consists of a stator laminated core 2 with a plurality of stator laminations.
  • the stator plate 3 on the end face of the stator laminated core 2 is designed such that it has means for reinforcing the bearing seat, not shown.
  • the means for reinforcement are designed as reinforcing anchors 4 and arranged on the inner diameter 5 of the end-side stator 3.
  • the reinforcing anchors 4 and the end-side stator 3 are integrally formed. It can be seen particularly well that the reinforcing anchors 4 are angled before the extrusion of the stator laminated core 2, in the direction in which later, the injection molded bearing seat, not shown, is located. In essence, the reinforcing anchors 4 are angled by 90 °.
  • the pole teeth 6 of the stator lamination Pact 2 can be seen, which are provided with windings, not shown.
  • the end-side stator 3 has the reinforcing anchors 4 for reinforcing the bearing seat, not shown.
  • the reinforcing anchors 4 are arranged on the inner diameter 5 of the end-side stator lamination 3. It can be seen particularly well that the reinforcing anchors 4 and the end-side stator plate 3 are integrally formed. In Fig. 2, the reinforcing anchors are not angled. Furthermore, the pole teeth 6 of the stator lamination Pact 2 can be seen, which are provided with windings, not shown.
  • Fig. 3 shows a partial view of an electric motor according to the invention in a longitudinal sectional view.
  • the electric motor 10 has a rotor comprising a rotor shaft 12 and a rotor body 11, and a stator comprising a stator laminated core 2 having a plurality of stator laminations 7 and an integrated bearing seat 13 for accommodating the bearing 14 in which the rotor shaft 12 is rotatable is stored, has. Since the bearing 14 is stressed by various forces, it makes sense to reinforce the bearing seat 13.
  • the end-side stator 3 has means for reinforcing the bearing seat 13.
  • the reinforcing means are designed as reinforcing anchors 4 and arranged on the inner diameter 5 of the end-side stator 3.
  • the stator laminations 7 have at least one side of a paint layer, not shown, and are materially interconnected by a chemical-thermal connection.
  • the stator laminated core 2 In order to be able to provide the stator laminated core 2 with windings not shown, the stator laminated core 2, in particular the non-visible pole teeth 6, must be electrically insulated.
  • the stator laminated core 2 is preferably encapsulated with plastic, whereby the encapsulation 15 is formed.
  • the bearing seat 13 is formed during the encapsulation process of the stator laminated core 2. Before the extrusion coating of the stator laminated core 2 and the injection of the bearing seat 13, the reinforcing anchors 4 are angled, in the direction in which the injection-molded bearing seat 13 is located. In essence, the reinforcing anchors 4 are angled by 90 °. After production of the bearing seat 13, the bearing 14 is pressed into the bearing seat 13.

Abstract

The invention relates to an electric motor comprising a rotor with a rotor shaft and a rotor body and a stator, which comprises a laminated core containing a large number of stator plates and at least one integrated bearing seat for receiving a bearing, in which the rotor shaft is rotatably mounted. According to the invention, the end face of at least one stator plate of the laminated core comprises an element for reinforcing the bearing seat.

Description

Elektromotor electric motor
Beschreibungdescription
Die Erfindung betrifft einen Elektromotor mit einem Rotor, der eine Rotorwelle und einen Rotorkörper umfasst, und einem Stator, der ein Stator-Blechpaket mit einer Vielzahl von Statorblechen und zumindest einen integrierten Lagersitz zur Aufnahme einer Lagers, in dem die Rotorwelle drehbar gelagert ist, aufweist, sowie Verfahren zur Montage eines solchen Elektromotors.The invention relates to an electric motor having a rotor comprising a rotor shaft and a rotor body, and a stator having a stator laminated core with a plurality of stator laminations and at least one integrated bearing seat for receiving a bearing in which the rotor shaft is rotatably mounted , as well as methods for mounting such an electric motor.
Die Erfindung ist insbesondere beispielsweise geeignet für den Einsatz in Kraftfahrzeugen. Im Kraftfahrzeugbereich spielen Elektromotoren, die als Kleinmotoren ausgebildet sind, aufgrund des begrenzten Bauraums eine bedeutende Rolle. Kleinmotoren sind Elektromotoren mit geringen Ausmaßen und haben in der Regel eine Leistung bis zu 1 kW.The invention is particularly suitable, for example, for use in motor vehicles. In the automotive sector electric motors, which are designed as small engines, play an important role due to the limited space. Small motors are electric motors with small dimensions and usually have a power up to 1 kW.
Elektromotoren können als Innenläufer- oder Außenläufermotoren ausgebildet sein. Innenläufermotoren weisen einen feststehenden Stator und einen inneren drehenden Rotor auf. Der Rotor ist koaxial, konzentrisch in den Stator eingefügt. Bei einem Außenläufermotor umgibt der Rotor den Stator konzentrisch. Ferner weisen Elektromotoren typischerweise ein Gehäuse auf, das den Motor vor äußeren Einflüssen, wie beispielsweise Schmutz oder Feuchtigkeit, schützt. Des Weiteren muss der Rotor bzw. die Rotorwelle mittels Lager drehbar gelagert sein. Die Lagerung der Rotorwelle wird beispielsweise mit einem oder mehreren aufwändigen Lagerschilden realisiert. Dabei müssen entsprechend der jeweiligen Motoraußenkontur ein oder mehrere separate Lagerschilde hergestellt werden, denn es besteht eine Vielzahl an Varianten hinsichtlich der Rotorlagerung und der entsprechenden Aufnahmegeometrien im Lagerschild. Es besteht aber auch die Möglichkeit, dass der Stator integrierte Lagersitze zur Aufnahme von Lagern, in denen die Rotorwelie drehbar gelagert ist, aufweist.Electric motors can be designed as internal rotor or external rotor motors. Internal rotor motors have a fixed stator and an inner rotating rotor. The rotor is coaxial, concentrically inserted into the stator. In an external rotor motor, the rotor concentrically surrounds the stator. Furthermore, electric motors typically include a housing that protects the engine from external influences such as dirt or moisture. Furthermore, the rotor or the rotor shaft must be rotatably supported by bearings. The bearing of the rotor shaft is realized for example with one or more complex end shields. It must be according to the respective Motor outer contour one or more separate end shields are made, because there are a variety of variants with respect to the rotor bearing and the corresponding receiving geometries in the end shield. But it is also possible that the stator has integrated bearing seats for receiving bearings in which the Rotorwelie is rotatably mounted.
Aus der DE 103 12 614 A1 ist eine elektrische Maschine mit einer in den Stator integrierter Rotorlagerung bekannt. Die Rotorwelle ist in Wälzlagern drehbar gelagert und die Wälzlager sind von Lagerringen aufgenommen, die im Stator der elektrischen Maschine angeordnet sind.From DE 103 12 614 A1 an electric machine with a rotor bearing integrated in the stator is known. The rotor shaft is rotatably supported in rolling bearings and the rolling bearings are received by bearing rings, which are arranged in the stator of the electric machine.
Aus der DE 40 21 599 A1 ist ein bürstenloser Gleichstrommotor bekannt, mit einer Welle, einem dauermagnetischen Rotor und einem Stator mit mehreren mit Wicklungen versehenen Polschuhen, wobei zwei Schalen aus nichtmagnetischem Werkstoff vorgesehen sind, die jeweils ein Lager für die Welle und Halterungen für die Polschuhe aufweisen.From DE 40 21 599 A1 a brushless DC motor is known, comprising a shaft, a permanent magnet rotor and a stator with a plurality of pole shoes provided with windings, wherein two shells of non-magnetic material are provided, each having a bearing for the shaft and brackets for the Have pole pieces.
Der Erfindung liegt die Aufgabe zugrunde, einen Elektromotor der eingangs genannten Art derart weiterzubilden, dass er kompakt und möglichst kleinbauend ist. Ferner soll er einfach und kostengünstig hergestellt werden.The invention has the object of providing an electric motor of the type mentioned in such a way that it is compact and as small as possible. Furthermore, it should be easy and inexpensive to manufacture.
Diese Aufgabe wird durch die Merkmale der Patentansprüche 1 , 6 und 8 gelöst. Vorteilhafte Weiterbildungen sind den Unteransprüchen zu entnehmen.This object is solved by the features of claims 1, 6 and 8. Advantageous developments can be found in the dependent claims.
Der Elektromotor hat einen Rotor, der eine Rotorwelle und einen Rotorkörper umfasst, und einen Stator, der ein Stator-Blechpaket mit einer Vielzahl von Statorblechen und zumindest einen integrierten Lagersitz zur Aufnahme eines Lagers, in dem die Rotorwelle drehbar gelagert ist, aufweist. Da das Lager durch verschiedene Kräfte beansprucht wird, ist es sinnvoll, den Lagersitz zu verstärken. Dazu ist zumindest ein stirnseitiges Statorblech des Stator- Blechpakets derart ausgebildet, dass es Mittel zur Verstärkung des Lagersitzes aufweist.The electric motor has a rotor comprising a rotor shaft and a rotor body, and a stator having a stator laminated core with a plurality of stator laminations and at least one integrated bearing seat for receiving a bearing in which the rotor shaft is rotatably mounted. Since the bearing is stressed by different forces, it makes sense to strengthen the bearing seat. For this purpose, at least one end-side stator plate of the stator laminated core is designed such that it has means for reinforcing the bearing seat.
Vorteilhafterweise sind die Mittel zur Verstärkung als Verstärkungsanker ausgebildet und am Innendurchmesser des stimseitigen Statorblechs angeordnet.Advantageously, the means for reinforcement are designed as reinforcing anchors and arranged on the inner diameter of the end-side stator lamination.
In vorteilhafter Weise sind die Verstärkungsanker und das stirnseitige Statorblech einstückig ausgebildet.Advantageously, the reinforcing anchors and the end-side stator plate are integrally formed.
Insbesondere weisen die Statorbleche des Stator-Bleckpakets zumindest einseitig eine Lackschicht, beispielsweise eine Backlackschicht, auf und sind stoffschlüssig durch eine chemisch-thermisch Verbindung miteinander verbunden. Die beschichteten Statorbleche werden zunächst zu einem so genannten Stator- Blechpaket zusammengefügt. Anschließend wird das Stator-Blechpaket kurz erhitzt, wodurch die Lackschicht, insbesondere die Backlackschicht, zum Schmelzen gebracht wird und die Statorbleche somit chemisch-thermisch fest miteinander verbindet.In particular, the stator laminations of the stator laminar packet have at least one side a lacquer layer, for example a baked enamel layer, and are connected to one another in a materially bonded manner by a chemical-thermal connection. The coated stator laminations are first joined together to form a so-called stator laminations. Subsequently, the stator lamination stack is heated briefly, whereby the lacquer layer, in particular the baked enamel layer, is made to melt and thus the stator laminations are firmly bonded together chemically-thermally.
Um das Stator-Blechpaket mit Wicklungen versehen zu können, müssen das Stator- Blechpaket, insbesondere die Polzähne des Stator-Bleckpakets, elektrisch isoliert werden. Das Stator-Blechpaket wird dazu vorzugsweise mit einem Kunststoff umspritzt. Der Lagersitz am Stator wird während der Umspritzung des Stator- Bleckpakets ausgebildet.In order to be able to provide windings to the stator laminated core, the stator laminated core, in particular the pole teeth of the stator core pack, must be electrically insulated. The stator laminated core is preferably encapsulated with a plastic. The bearing seat on the stator is formed during the encapsulation of the Stator Bleckpakets.
Insbesondere werden vor dem Umspritzen des Stator-Bleckpakets und der Spritzung des Lagersitzes die Verstärkungsanker abgewinkelt, und zwar in diejenige Richtung, in der sich der gespritzte Lagersitz befindet. Im Wesentlichen werden die Verstärkungsanker um 90° abgewinkelt. Nach Fertigung des Lagersitzes wird das Lager in den Lagersitz eingepresst.In particular, the reinforcing anchors are angled before the encapsulation of the stator-Bleckpakets and the injection of the bearing seat, in the direction in which the injection-molded bearing seat is located. In essence, the Reinforcement anchor angled 90 °. After manufacturing the bearing seat, the bearing is pressed into the bearing seat.
Alternativ kann das Lager in ein Spritzwerkzeug eingelegt werden und der Lagersitz wird praktisch während der Umspritzung des Stator-Bleckpakets um das Lager im Spritzwerkzeug „herum gespritzt". Alternatively, the bearing can be placed in an injection mold and the bearing seat is practically "sprayed around" around the bearing in the injection mold during the encapsulation of the stator Bleckpakets.
In der nachfolgenden Beschreibung werden weitere Merkmale und Einzelheiten der Erfindung in Zusammenhang mit den beigefügten Zeichnungen anhand von Ausführungsbeispielen näher erläutert. Dabei sind in einzelnen Varianten beschriebene Merkmale und Zusammenhänge grundsätzlich auf alle Ausführungsbeispiele übertragbar. In den Zeichnungen zeigen:In the following description, further features and details of the invention in conjunction with the accompanying drawings will be explained in more detail by means of exemplary embodiments. In this case, features and relationships described in individual variants can in principle be applied to all exemplary embodiments. In the drawings show:
Fig. 1 eine Ausführungsform des Stators des erfindungsgemäßenFig. 1 shows an embodiment of the stator of the invention
Elektromotors in einer perspektivischen Ansicht;Electric motor in a perspective view;
Fig. 2 eine Ausführungsform des stirnseitigen Statorblechs des erfindungsgemäßen Elektromotors in einer Draufsicht;2 shows an embodiment of the end-side stator lamination of the electric motor according to the invention in a plan view;
Fig. 3 eine Teilansicht eines erfindungsgemäßen Elektromotors in einerFig. 3 is a partial view of an electric motor according to the invention in one
Längsschnittdarstellung. Longitudinal view.
Fig. 1 zeigt eine Ausführungsform eines Stators des erfindungsgemäßen Elektromotors in einer perspektivischen Ansicht. Der Stator 1 besteht aus einem Stator-Blechpaket 2 mit einer Vielzahl von Statorblechen. Das Statorblech 3 an der Stirnseite des Stator-Blechpakets 2 ist derart ausgebildet, dass es Mittel zur Verstärkung des nicht dargestellten Lagersitzes aufweist. Die Mittel zur Verstärkung sind als Verstärkungsanker 4 ausgebildet und am Innendurchmesser 5 des stirnseitigen Statorblechs 3 angeordnet. Die Verstärkungsanker 4 und das stirnseitige Statorblech 3 sind einstückig ausgebildet. Besonders gut ist zu erkennen, dass die Verstärkungsanker 4 vor dem Umspritzen des Stator-Blechpakets 2 abgewinkelt werden, und zwar in diejenige Richtung, in der sich später der nicht dargestellte, gespritzte Lagersitz befindet. Im Wesentlichen werden die Verstärkungsanker 4 um 90° abgewinkelt. Weiterhin sind die Polzähne 6 des Stator- Blechpaktes 2 zu erkennen, die mit nicht gezeigten Wicklungen versehen werden.Fig. 1 shows an embodiment of a stator of the electric motor according to the invention in a perspective view. The stator 1 consists of a stator laminated core 2 with a plurality of stator laminations. The stator plate 3 on the end face of the stator laminated core 2 is designed such that it has means for reinforcing the bearing seat, not shown. The means for reinforcement are designed as reinforcing anchors 4 and arranged on the inner diameter 5 of the end-side stator 3. The reinforcing anchors 4 and the end-side stator 3 are integrally formed. It can be seen particularly well that the reinforcing anchors 4 are angled before the extrusion of the stator laminated core 2, in the direction in which later, the injection molded bearing seat, not shown, is located. In essence, the reinforcing anchors 4 are angled by 90 °. Furthermore, the pole teeth 6 of the stator lamination Pact 2 can be seen, which are provided with windings, not shown.
■ Fig. 2 zeigt eine Ausführungsform des stirnseitigen Statorblechs des erfindungsgemäßen Elektromotors in einer Draufsicht. Das stirnseitige Statorblech 3 weist die Verstärkungsanker 4 zur Verstärkung des nicht dargestellten Lagersitzes auf. Die Verstärkungsanker 4 sind am Innendurchmesser 5 des stirnseitigen Statorblechs 3 angeordnet. Besonders gut ist zu erkennen, dass die Verstärkungsanker 4 und das stirnseitige Statorblech 3 einstückig ausgebildet sind. In Fig. 2 sind die Verstärkungsanker nicht abgewinkelt. Weiterhin sind die Polzähne 6 des Stator-Blechpaktes 2 zu erkennen, die mit nicht gezeigten Wicklungen versehen werden.2 shows an embodiment of the end-side stator lamination of the electric motor according to the invention in a plan view. The end-side stator 3 has the reinforcing anchors 4 for reinforcing the bearing seat, not shown. The reinforcing anchors 4 are arranged on the inner diameter 5 of the end-side stator lamination 3. It can be seen particularly well that the reinforcing anchors 4 and the end-side stator plate 3 are integrally formed. In Fig. 2, the reinforcing anchors are not angled. Furthermore, the pole teeth 6 of the stator lamination Pact 2 can be seen, which are provided with windings, not shown.
Fig. 3 zeigt eine Teilansicht eines erfindungsgemäßen Elektromotors in einer Längsschnittdarstellung. Der Elektromotor 10 hat einen Rotor, der eine Rotorwelle 12 und einen Rotorkörper 11 umfasst, und einen Stator, der ein Stator-Blechpaket 2 mit einer Vielzahl von Statorblechen 7 und einen integrierten Lagersitz 13 zur Aufnahme des Lagers 14, in dem die Rotorwelle 12 drehbar gelagert ist, aufweist. Da das Lager 14 durch verschiedene Kräfte beansprucht wird, ist es sinnvoll, den Lagersitz 13 zu verstärken. Dazu weist das stirnseitige Statorblech 3 Mittel zur Verstärkung des Lagersitzes 13 auf. Die Verstärkungsmittel sind als Verstärkungsanker 4 ausgebildet und am Innendurchmesser 5 des stirnseitigen Statorblechs 3 angeordnet.Fig. 3 shows a partial view of an electric motor according to the invention in a longitudinal sectional view. The electric motor 10 has a rotor comprising a rotor shaft 12 and a rotor body 11, and a stator comprising a stator laminated core 2 having a plurality of stator laminations 7 and an integrated bearing seat 13 for accommodating the bearing 14 in which the rotor shaft 12 is rotatable is stored, has. Since the bearing 14 is stressed by various forces, it makes sense to reinforce the bearing seat 13. For this purpose, the end-side stator 3 has means for reinforcing the bearing seat 13. The reinforcing means are designed as reinforcing anchors 4 and arranged on the inner diameter 5 of the end-side stator 3.
Die Statorbleche 7 weisen zumindest einseitig eine nicht gezeigte Lackschicht auf und sind stoffschlüssig durch eine chemisch-thermisch Verbindung miteinander verbunden.The stator laminations 7 have at least one side of a paint layer, not shown, and are materially interconnected by a chemical-thermal connection.
Um das Stator-Blechpaket 2 mit nicht gezeigten Wicklungen versehen zu können, müssen das Stator-Blechpaket 2, insbesondere die nicht sichtbaren Polzähne 6, elektrisch isoliert werden. Das Stator-Blechpaket 2 wird dazu vorzugsweise mit Kunststoff umspritzt, wodurch die Umspritzung 15 entsteht. Der Lagersitz 13 wird während des Umspritzungsvorgangs des Stator-Blechpakets 2 ausgebildet. Vor dem Umspritzen des Stator-Blechpakets 2 und der Spritzung des Lagersitzes 13 werden die Verstärkungsanker 4 abgewinkelt, und zwar in diejenige Richtung, in der sich der gespritzte Lagersitz 13 befindet. Im Wesentlichen werden die Verstärkungsanker 4 um 90° abgewinkelt. Nach Fertigung des Lagersitzes 13 wird das Lager 14 in den Lagersitz 13 eingepresst. In order to be able to provide the stator laminated core 2 with windings not shown, the stator laminated core 2, in particular the non-visible pole teeth 6, must be electrically insulated. The stator laminated core 2 is preferably encapsulated with plastic, whereby the encapsulation 15 is formed. The bearing seat 13 is formed during the encapsulation process of the stator laminated core 2. Before the extrusion coating of the stator laminated core 2 and the injection of the bearing seat 13, the reinforcing anchors 4 are angled, in the direction in which the injection-molded bearing seat 13 is located. In essence, the reinforcing anchors 4 are angled by 90 °. After production of the bearing seat 13, the bearing 14 is pressed into the bearing seat 13.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Stator1 stator
2 Stator-Blechpaket2 stator laminated core
3 Stirnseitiges Statorblech3 Front-side stator plate
4 Verstärkungsanker4 reinforcement anchors
5 Innendurchmesser des Statorblechs 35 inner diameter of the stator 3
6 Polzähne6 pole teeth
7 Statorbleche7 stator laminations
10 Elektromotor10 electric motor
11 Rotorkörper11 rotor body
12 Rotorwelle12 rotor shaft
13 Lagersitz13 bearing seat
14 Lager14 bearings
15 Umspritzung 15 encapsulation

Claims

Patentansprüche claims
1. Elektromotor (10) mit einem Rotor, der eine Rotorwelle (12) und einen Rotorkörper (11) umfasst, und einem Stator, der ein Stator-Biechpaket (2) mit einer Vielzahl von Statorblechen (3, 7) und zumindest einen integrierten Lagersitz (13) zur Aufnahme eines Lagers (14), in dem die Rotorwelle (12) drehbar gelagert ist, aufweist, dadurch gekennzeichnet, dass zumindest ein stirnseitiges Statorblech (3) des Stator-Bleckpakets (2) Mittel zurAn electric motor (10) comprising a rotor comprising a rotor shaft (12) and a rotor body (11), and a stator having a stator bending package (2) with a plurality of stator laminations (3, 7) and at least one integrated one Bearing seat (13) for receiving a bearing (14) in which the rotor shaft (12) is rotatably mounted, characterized in that at least one end-side stator lamination (3) of the stator-Bleckpakets (2) means for
Verstärkung des Lagersitzes (13) aufweist.Reinforcement of the bearing seat (13).
2. Elektromotor (10) nach Anspruch 1 , dadurch gekennzeichnet, dass die Mittel zur Verstärkung als Verstärkungsanker (4) ausgebildet sind.2. Electric motor (10) according to claim 1, characterized in that the means for reinforcement as a reinforcing anchor (4) are formed.
3. Elektromotor (10) nach Anspruch 2, dadurch gekennzeichnet, dass die Verstärkungsanker (4) am Innendurchmesser (5) des stirnseitigen Statorblechs (3) angeordnet sind.3. Electric motor (10) according to claim 2, characterized in that the reinforcing anchors (4) on the inner diameter (5) of the end-side stator lamination (3) are arranged.
4. Elektromotor (10) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Verstärkungsanker (4) und das stirnseitige Statorblech (3) einstückig aus gebildet sind. 4. Electric motor (10) according to claim 2 or 3, characterized in that the reinforcing anchors (4) and the end-side stator lamination (3) are formed in one piece.
5. Elektromotor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Statorbleche (3, 7) zumindest einseitig eine Lackschicht aufweisen und stoffschlüssig durch eine chemisch-thermisch Verbindung miteinander verbunden sind.5. Electric motor (10) according to any one of the preceding claims, characterized in that the stator laminations (3, 7) at least on one side have a lacquer layer and are materially interconnected by a chemical-thermal connection.
6. Verfahren zur Montage eines Elektromotors (10) nach Anspruch 1 , dadurch gekennzeichnet, dass das Stator-Blechpaket (2) zur elektrischen Isolierung mit Kunststoff umspritzt wird und der Lagersitz (13) am Stator während der Umspritzung des Stator- Blechpakets (2) ausgebildet wird.6. A method for assembling an electric motor (10) according to claim 1, characterized in that the stator laminated core (2) is encapsulated for electrical insulation with plastic and the bearing seat (13) on the stator during the encapsulation of the stator laminated core (2) is trained.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass das Lager (14) nach Fertigung des Lagersitzes (13) in den Lagersitz (13) ein gepresst wird.7. The method according to claim 6, characterized in that the bearing (14) after manufacture of the bearing seat (13) in the bearing seat (13) is pressed.
8. Verfahren zur Montage eines Elektromotors (10) nach Anspruch 1 , dadurch gekennzeichnet, dass das Stator-B lechpaket (2) zur elektrischen Isolierung mit Kunststoff umspritzt wird und das Lager (14) in ein Spritzwerkzeug eingelegt und der Lagersitz (13) am Stator während der Umspritzung des Stator-Blechpakets (2) ausgebildet wird. 8. A method for assembling an electric motor (10) according to claim 1, characterized in that the stator B lechpaket (2) for electrical insulation is encapsulated in plastic and the bearing (14) inserted into an injection mold and the bearing seat (13) on Stator during the encapsulation of the stator laminated core (2) is formed.
EP06722558A 2005-02-28 2006-02-24 Electric motor Withdrawn EP1854198A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005009599 2005-02-28
DE102005046284A DE102005046284A1 (en) 2005-02-28 2005-09-28 Electric motor for use as small power motor in motor vehicle, has stator with stator-laminated core on whose front side stator plates are provided, where each plate has reinforcing bracket for reinforcing bearing seat
PCT/DE2006/000392 WO2006089543A1 (en) 2005-02-28 2006-02-24 Electric motor

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EP1854198A1 true EP1854198A1 (en) 2007-11-14

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US (1) US20080157616A1 (en)
EP (1) EP1854198A1 (en)
DE (2) DE102005046284A1 (en)
WO (1) WO2006089543A1 (en)

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DE112006000352A5 (en) 2007-11-22
DE102005046284A1 (en) 2006-08-31
US20080157616A1 (en) 2008-07-03

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