EP4186148A1 - End shield - Google Patents

End shield

Info

Publication number
EP4186148A1
EP4186148A1 EP21745297.8A EP21745297A EP4186148A1 EP 4186148 A1 EP4186148 A1 EP 4186148A1 EP 21745297 A EP21745297 A EP 21745297A EP 4186148 A1 EP4186148 A1 EP 4186148A1
Authority
EP
European Patent Office
Prior art keywords
bearing
elevations
receiving device
lateral surface
sealing element
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Withdrawn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
EP21745297.8A
Other languages
German (de)
French (fr)
Inventor
Konrad Artmann
Wolfgang Ludwig
Wolfgang Schreiber
Tobias Schmid
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP4186148A1 publication Critical patent/EP4186148A1/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Withdrawn legal-status Critical Current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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers

Definitions

  • the present invention relates to an end shield for an electric motor containing a receiving device with an inner lateral surface for receiving and holding at least one bearing.
  • Electric motors such as a drive for a machine tool, usually have an end shield for receiving and holding a ball bearing.
  • the ball bearing is used to store one end of a rotor shaft.
  • the rotor shaft protrudes from the laminated core of the electric motor and transmits the torque generated in the electric motor to other components, such as a gearbox.
  • an end shield for an electric motor containing a receiving device with an inner lateral surface for receiving and holding at least one bearing.
  • At least four symmetrically arranged, radially extending elevations are positioned on the inner lateral surface of the receiving device such that there is a free space for receiving and holding between two inner lateral surface elevations and two outer inner lateral surface elevations at least one sealing element is included.
  • the sealing element serves as a braking element with which the bearing outer ring can be braked.
  • the inner elevations may be positioned offset to the outer elevations, so that there is no straight passage between the elevations in the axial direction. This can prevent the sealing element positioned between the elevations from being locally displaced on the inner lateral surface of the receiving device.
  • the free space can be designed in the form of a groove between the elevations.
  • the at least one sealing element may be designed in the form of an O-ring.
  • the O-ring consists of an elastic material.
  • FIG. 1 a perspective view of a bearing plate according to the invention
  • FIG. 2 shows a side sectional view through the end shield
  • FIG. 3 shows a side sectional view of an upper part of a bearing and a sealing element
  • FIG. 4 shows a side sectional view through an electric motor with the end shield without bearing, sealing element and rotor shaft;
  • FIG. 5 shows a side sectional view through the electric motor with the end shield and the sealing element, without bearing and rotor shaft;
  • FIG. 6 shows a side sectional view through the electric motor with the end shield, the sealing element and the bearing and without the rotor shaft;
  • FIG. 7 shows a side sectional view through the electric motor with the end shield, the sealing element, the bearing and the rotor shaft.
  • FIG. 1 shows a bearing plate 1 according to the invention.
  • the end shield 1 essentially contains an outer ring element 2, a receiving device 3 and a number of holding webs 4.
  • the end shield 1 is intended to be attached to an electric motor 5 .
  • the electric motor 5 essentially contains a stator 6 , a rotor 7 that rotates relative to the stator 6 , and a rotor shaft RW that is non-rotatably connected to the rotor 7 .
  • the receiving device 3 is positioned centrally inside the outer ring element 2 .
  • Six radial spoke elements 8 connect the outer ring element 2 to the receiving device 3.
  • the receiving device 3 contains an outer lateral surface 9 and an inner lateral surface 10. As indicated in Figure 1, the retaining webs 4 extend in the axial direction A from the outer lateral surface 9 of the receiving device 3. The retaining webs 4 are used to position and fix the end shield 1 on the stator 6 4 to 7. For this purpose, the free ends 4a of the retaining webs 4 are pushed into the respective free spaces between the coils of the stator 6.
  • the outer ring element 2 contains three axially running fixing webs 11. These fixing webs 11 are also used to fasten the end shield 1 to the stator 6.
  • the inner lateral surface 10 of the receiving device 3 serves to receive and hold at least one bearing 12.
  • the bearing 12 is designed as a ball bearing.
  • the bearing 12 can also be designed in the form of a plain or needle bearing.
  • the receiving device 3 contains radially extending elevations 13 arranged symmetrically on the inner lateral surface 10. As can be seen in the figures, each elevation 13 is slightly conical.
  • the elevations 13 are positioned in a first and second ring-shaped arrangement 14a, 14b.
  • the first annular array 14a of bumps! 3 is positioned behind the second annular array 14b of projections 13 in the direction of arrow A.
  • the elevations 13 of the first and second ring-shaped arrangements 14a, 14b are offset from one another in such a way that no elevation 13 of the first or second ring-shaped arrangements 14a, 14b are in the direction of the arrow A one behind the other is arranged.
  • each elevation 13 of the second annular arrangements 14b is aligned in the axial direction of the arrow A in a free space FR between two elevations 13 of the first annular arrangement 14a.
  • the elevations 13 of the first and second ring-shaped arrangement 14a, 14b are thus not positioned one behind the other in the axial direction of the arrow A, but offset from one another.
  • the elevations 13 of the first and second annular arrangements 14a, 14b are spaced apart from one another in the axial direction of the arrow A such that an annular free space 15 is provided between the two annular arrangements 14a, 14b of the elevations 13.
  • the ring-shaped free space 15 can also be referred to as a groove or ring-groove. In Figure 2, the annular space 15 is shown between the two dashed lines.
  • a sealing element 16 is inserted into the annular free space 15, see Figure 5.
  • the width in the axial direction of the arrow A of the annular free space 15 corresponds approximately to the width of the cross-sectional area of the sealing element 16.
  • the bearing 12 is positioned in the receiving device 3 .
  • the sealing element 16 lies between the inner lateral surface 10 of the receiving device 3 and the outer lateral surface 17 of the bearing 12.
  • the dimensions of the inner diameter of the receiving device 3, the outer diameter of the bearing 12 and the width of the cross-sectional area of the sealing element 16 are selected in such a way that the outer lateral surface 17 of the bearing 12 and the inner lateral surface 10 of the receiving device 3 onto the sealing element 16.
  • the sealing element 16 is squeezed somewhat and deformed in such a way that the sealing element 16 is pressed into the free spaces FR between the individual elevations 13 .
  • the bearing 12 is firmly positioned in the receiving device 3 as a result of the squeezing and the resulting deformation of the sealing element 16 .
  • the sealing element 16 serves as a brake and prevents the bearing 12 and in particular a bearing outer ring 18 from being rotated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Sealing Of Bearings (AREA)

Abstract

End shield for an electric motor containing a receiving device having an inner peripheral surface for receiving and holding at least one bearing, at least four symmetrically arranged, radially extending elevations being located on the inner peripheral surface of the receiving device such that there is a space for receiving and holding at least one sealing element between two elevations on the interior of the inner peripheral surface and two elevations on the exterior of the inner peripheral surface.

Description

Lagerschild bearing shield
Die vorliegende Erfindung betrifft eine Lagerschild für einen Elektromotor enthaltend eine Aufnahmeeinrichtung mit einer Innenmantelfläche zum Aufnehmen und Halten wenigstens eines Lagers. The present invention relates to an end shield for an electric motor containing a receiving device with an inner lateral surface for receiving and holding at least one bearing.
Elektromotoren, wie beispielsweise als Antrieb für eine Werkzeugmaschine, weisen zumeist einen Lagerschild zum Aufnehmen und Halten eines Kugellagers auf. Das Kugellager dient dabei zum lagern eines Endes einer Rotorwelle. Die Rotorwelle ragt dabei aus dem Blechpaket des Elektromotors heraus und überträgt das in dem Elektromotor erzeugte Drehmoment auf weitere Komponenten, wie beispielsweise ein Getriebe. Electric motors, such as a drive for a machine tool, usually have an end shield for receiving and holding a ball bearing. The ball bearing is used to store one end of a rotor shaft. The rotor shaft protrudes from the laminated core of the electric motor and transmits the torque generated in the electric motor to other components, such as a gearbox.
Damit die Rotorwelle optimal mit Hilfe des (Kugel-)Lagers gelagert ist und mögliche Beschädigungen an dem Lager verhindert werden können, muss unter anderem ein Mitdrehen bzw. ein Drehen eines Außenrings des Lagers relativ zu einem Innenring des Lagers vermieden werden. So that the rotor shaft is optimally mounted with the help of the (ball) bearing and possible damage to the bearing can be prevented, it is necessary, among other things, to prevent an outer ring of the bearing from rotating or rotating relative to an inner ring of the bearing.
Aus dem Stand der Technik bekannte Vorrichtungen zum Verhindern eines Mitdrehens bzw. eines Drehens eines Lageraußenrings relativ zu einem Lagerinnenrings sind für gewöhnlich unzureichend und/oder zu komplex. Devices known from the prior art for preventing co-rotation or rotation of a bearing outer ring relative to a bearing inner ring are usually insufficient and/or overly complex.
Aufgabe der vorliegenden Erfindung ist es daher, ein Lagerschild für einen Elektromotor bereitzustellen, mit dem das vorstehend genannte Problem gelöst werden kann. It is therefore the object of the present invention to provide an end shield for an electric motor with which the above-mentioned problem can be solved.
Die Aufgabe wird jeweils gelöst durch den Gegenstand des unabhängigen Anspruchs 1 . The object is solved in each case by the subject matter of independent claim 1 .
Weitere vorteilhafte Ausgestaltungsformen der Erfindung finden sich in den entsprechenden Unteransprüchen. Further advantageous embodiments of the invention can be found in the corresponding dependent claims.
Die Aufgabe wird insbesondere gelöst durch einen Lagerschild für einen Elektromotor enthaltend eine Aufnahmeeinrichtung mit einer Innenmantelfläche zum Aufnehmen und Halten wenigstens eines Lagers. The object is achieved in particular by an end shield for an electric motor containing a receiving device with an inner lateral surface for receiving and holding at least one bearing.
Erfindungsgemäß ist vorgesehen, dass wenigstens vier symmetrisch angeordnete, sich radial erstreckende Erhebungen so an der Innenmantelfläche der Aufnahmeeinrichtung positioniert sind, dass zwischen zwei an der Innenmantelfläche innenliegenden Erhebungen und zwei an der Innenmantelfläche außenliegenden Erhebungen ein Freiraum zum Aufnehmen und Halten wenigstens eines Dichtungselements enthalten ist. Hierdurch kann auf effektive Art und Weise ein Mitdrehen bzw. ein Drehen eines Außenrings des Lagers relativ zu einem Innenring des Lagers vermieden werden. Das Dichtungselement dient dabei als Bremselement, mit dem der Lageraußenring gebremst werden kann. Durch die Positionierung des Dichtungselements in dem Freiraum zwischen den Erhebungen wird das Dichtungselement und folglich auch das Lager in einer vorbestimmten Ausrichtung gehalten. According to the invention, at least four symmetrically arranged, radially extending elevations are positioned on the inner lateral surface of the receiving device such that there is a free space for receiving and holding between two inner lateral surface elevations and two outer inner lateral surface elevations at least one sealing element is included. As a result, co-rotation or rotation of an outer ring of the bearing relative to an inner ring of the bearing can be avoided in an effective manner. The sealing element serves as a braking element with which the bearing outer ring can be braked. By positioning the sealing element in the free space between the elevations, the sealing element and consequently also the bearing are held in a predetermined alignment.
Gemäß einer vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass die innenliegenden Erhebungen versetzt zu den außenliegenden Erhebungen positioniert sind, sodass in axialer Richtung kein gradliniger Durchgang zwischen den Erhebungen gegeben ist. Hierdurch kann verhindert werden, dass das zwischen den Erhebungen positionierte Dichtungselement an der Innenmantelfläche der Aufnahmeeinrichtung lokal verschoben wird.According to an advantageous embodiment of the present invention, it may be possible for the inner elevations to be positioned offset to the outer elevations, so that there is no straight passage between the elevations in the axial direction. This can prevent the sealing element positioned between the elevations from being locally displaced on the inner lateral surface of the receiving device.
Entsprechend einer weiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass der Freiraum in Form einer Nut zwischen den Erhebungen ausgestaltet ist.According to a further advantageous embodiment of the present invention, it can be possible for the free space to be designed in the form of a groove between the elevations.
Gemäß einerweiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass zwischen vier und zwölf Erhebungen an der Innenmantelfläche der Aufnahmeeinrichtung positioniert sind. Hierdurch kann eine verbesserte Positionierung des Dichtungselements zwischen den Erhebungen erreicht werden. According to a further advantageous embodiment of the present invention, it may be possible for between four and twelve elevations to be positioned on the inner lateral surface of the receiving device. In this way, an improved positioning of the sealing element between the elevations can be achieved.
Entsprechend einer weiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass das wenigstens eine Dichtungselement in Form eines O-Rings ausgestaltet ist. Der O-Ring besteht dabei aus einem elastischen Werkstoff. According to a further advantageous embodiment of the present invention, it may be possible for the at least one sealing element to be designed in the form of an O-ring. The O-ring consists of an elastic material.
Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In den Figuren sind verschiedene Ausführungsbeispiele der vorliegenden Erfindung dargestellt. Die Figuren, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmässigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Further advantages result from the following description of the figures. Various exemplary embodiments of the present invention are shown in the figures. The figures, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them to form further meaningful combinations.
Es zeigen: Figur 1 eine perspektivische Ansicht auf ein erfindungsgemäßen Lagerschild; They show: FIG. 1 a perspective view of a bearing plate according to the invention;
Figur 2 eine seitliche Schnittansicht durch den Lagerschild; Figur 3 eine seitliche Schnittansicht auf einen oberen Anteil eines Lagers und ein Dichtungselement; FIG. 2 shows a side sectional view through the end shield; FIG. 3 shows a side sectional view of an upper part of a bearing and a sealing element;
Figur 4 eine seitliche Schnittansicht durch einen Elektromotor mit dem Lagerschild ohne Lager, Dichtungselement und Rotorwelle; FIG. 4 shows a side sectional view through an electric motor with the end shield without bearing, sealing element and rotor shaft;
Figur 5 eine seitliche Schnittansicht durch den Elektromotor mit dem Lagerschild und dem Dichtungselement, ohne Lager und Rotorwelle; FIG. 5 shows a side sectional view through the electric motor with the end shield and the sealing element, without bearing and rotor shaft;
Figur 6 eine seitliche Schnittansicht durch den Elektromotor mit dem Lagerschild, dem Dichtungselement und dem Lager und ohne Rotorwelle; und FIG. 6 shows a side sectional view through the electric motor with the end shield, the sealing element and the bearing and without the rotor shaft; and
Figur 7 eine seitliche Schnittansicht durch den Elektromotor mit dem Lagerschild, dem Dichtungselement, dem Lager und der Rotorwelle. FIG. 7 shows a side sectional view through the electric motor with the end shield, the sealing element, the bearing and the rotor shaft.
Ausführunasbeisoiele: Execution examples:
In Figur 1 ist ein erfindungsgemäßer Lagerschild 1 gezeigt. Das Lagerschild 1 enthält im Wesentlichen ein äußeres Ringelement 2, eine Aufnahmeeinrichtung 3 und eine Anzahl an Haltestegen 4. FIG. 1 shows a bearing plate 1 according to the invention. The end shield 1 essentially contains an outer ring element 2, a receiving device 3 and a number of holding webs 4.
Wie in den Figuren angedeutet ist das Lagerschild 1 dazu vorgesehen, an einem Elektromotor 5 angebracht zu werden. Der Elektromotor 5 enthält dabei im Wesentlichen einen Stator 6, einen sich relativ zu dem Stator 6 drehenden Rotor 7 sowie eine drehfest mit dem Rotor 7 verbundene Rotorwelle RW. As indicated in the figures, the end shield 1 is intended to be attached to an electric motor 5 . The electric motor 5 essentially contains a stator 6 , a rotor 7 that rotates relative to the stator 6 , and a rotor shaft RW that is non-rotatably connected to the rotor 7 .
Die Aufnahmeeinrichtung 3 ist zentral im Inneren des äußeren Ringelements 2 positioniert. Sechs radial verlaufende Speichenelemente 8 verbinden dabei das äußere Ringelement 2 mit der Aufnahmeeinrichtung 3. The receiving device 3 is positioned centrally inside the outer ring element 2 . Six radial spoke elements 8 connect the outer ring element 2 to the receiving device 3.
Die Aufnahmeeinrichtung 3 enthält eine Außenmantelfläche 9 sowie eine Innenmantelfläche 10. Wie in Figur 1 angedeutet, erstrecken sich die Haltestege 4 in axialer Richtung A von der Außenmantelfläche 9 der Aufnahmeeinrichtung 3. Die Haltestege 4 dienen zum Positionieren und Fixieren des Lagerschilds 1 an dem Stator 6, vgl. Figur 4 bis 7. Die freien Enden 4a der Haltestege 4 werden hierzu in die jeweiligen Freiräume zwischen den Spulen des Stators 6 eingeschoben.The receiving device 3 contains an outer lateral surface 9 and an inner lateral surface 10. As indicated in Figure 1, the retaining webs 4 extend in the axial direction A from the outer lateral surface 9 of the receiving device 3. The retaining webs 4 are used to position and fix the end shield 1 on the stator 6 4 to 7. For this purpose, the free ends 4a of the retaining webs 4 are pushed into the respective free spaces between the coils of the stator 6.
Wie Figur 1 ebenfalls zu entnehmen ist enthält das äußere Ringelement 2 drei axial verlaufende Fixierstege 11. Diese Fixierstege 11 dient zusätzlich zum Befestigen des Lagerschilds 1 an dem Stator 6. As can also be seen in FIG. 1, the outer ring element 2 contains three axially running fixing webs 11. These fixing webs 11 are also used to fasten the end shield 1 to the stator 6.
Die Innenmantelfläche 10 der Aufnahmeeinrichtung 3 dient zum Aufnehmen und Halten wenigstens eines Lagers 12. In dem vorliegenden Ausführungsbeispiel ist das Lager 12 als Kugellager ausgestaltet. Alternativ kann das Lager 12 auch in Form eines Gleit- oder Nadellager ausgestaltet sein. The inner lateral surface 10 of the receiving device 3 serves to receive and hold at least one bearing 12. In the present exemplary embodiment, the bearing 12 is designed as a ball bearing. Alternatively, the bearing 12 can also be designed in the form of a plain or needle bearing.
Wie insbesondere in den Figuren 1 und 2 angedeutet ist, enthält die Aufnahmeeinrichtung 3 an der Innenmantelfläche 10 symmetrisch angeordnete, sich radial erstreckende Erhebungen 13. Wie in den Figuren erkennbar, ist jede Erhebung 13 leicht konisch ausgestaltet. As indicated in particular in FIGS. 1 and 2, the receiving device 3 contains radially extending elevations 13 arranged symmetrically on the inner lateral surface 10. As can be seen in the figures, each elevation 13 is slightly conical.
Die Erhebungen 13 sind in den vorliegenden Ausführungsbeispiel dabei in einer ersten und zweiten ringförmigen Anordnungen 14a, 14b positioniert. Die erste ringförmige Anordnung 14a von Erhebungen! 3 ist in Pfeilrichtung A hinter der zweiten ringförmigen Anordnung 14b von Erhebungen 13 positioniert. Die Erhebungen 13 der ersten und zweiten ringförmigen Anordnungen 14a, 14b sind so zueinander versetzt angeordnet, dass keine Erhebung 13 der ersten oder zweiten ringförmigen Anordnungen 14a, 14b in Pfeilrichtung A hintereinander angeordnet ist. Mit anderen Worten: Jede Erhebung 13 der zweiten ringförmigen Anordnungen 14b fluchtet in axialer Pfeilrichtung A in einen Freiraum FR zwischen zwei Erhebungen 13 der ersten ringförmigen Anordnung 14a. Die Erhebungen 13 der ersten und zweiten ringförmigen Anordnung 14a, 14b sind somit nicht in axialer Pfeilrichtung A hintereinander, sondern versetzt zueinander positioniert. Darüber hinaus sind die Erhebungen 13 der ersten und zweiten ringförmigen Anordnungen 14a, 14b in axialer Pfeilrichtung A zueinander so beabstandet, dass ein ringförmiger Freiraum 15 zwischen den beiden ringförmigen Anordnungen 14a, 14b der Erhebungen 13 gegeben ist. Der ringförmige Freiraum 15 kann auch als Nut oder Ring-Nut bezeichnet werden. In Figur 2 ist der ringförmige Freiraum 15 zwischen den beiden gestrichelten Linien dargestellt. In the present exemplary embodiment, the elevations 13 are positioned in a first and second ring-shaped arrangement 14a, 14b. The first annular array 14a of bumps! 3 is positioned behind the second annular array 14b of projections 13 in the direction of arrow A. FIG. The elevations 13 of the first and second ring-shaped arrangements 14a, 14b are offset from one another in such a way that no elevation 13 of the first or second ring-shaped arrangements 14a, 14b are in the direction of the arrow A one behind the other is arranged. In other words: each elevation 13 of the second annular arrangements 14b is aligned in the axial direction of the arrow A in a free space FR between two elevations 13 of the first annular arrangement 14a. The elevations 13 of the first and second ring-shaped arrangement 14a, 14b are thus not positioned one behind the other in the axial direction of the arrow A, but offset from one another. In addition, the elevations 13 of the first and second annular arrangements 14a, 14b are spaced apart from one another in the axial direction of the arrow A such that an annular free space 15 is provided between the two annular arrangements 14a, 14b of the elevations 13. The ring-shaped free space 15 can also be referred to as a groove or ring-groove. In Figure 2, the annular space 15 is shown between the two dashed lines.
In den ringförmigen Freiraum 15 ist ein Dichtungselement 16 eingelegt, vgl. Figur 5. Die Breite in axialer Pfeilrichtung A des ringförmigen Freiraums 15 entspricht dabei ungefähr der Breite der Querschnittsfläche des Dichtungselements 16. A sealing element 16 is inserted into the annular free space 15, see Figure 5. The width in the axial direction of the arrow A of the annular free space 15 corresponds approximately to the width of the cross-sectional area of the sealing element 16.
Wie in Figur 6 erkennbar, ist in die Aufnahmeeinrichtung 3 das Lager 12 positioniert. Das Dichtungselement 16 liegt dabei zwischen der Innenmantelfläche 10 der Aufnahmeeinrichtung 3 und der Außenmantelfläche 17 des Lagers 12. Die Dimensionen des Innendurchmessers der Aufnahmeeinrichtung 3, der Außendurchmessers des Lagers 12 und die Breite der Querschnittsfläche des Dichtungselements 16 sind dabei so gewählt, dass die Außenmantelfläche 17 des Lagers 12 sowie die Innenmantelfläche 10 der Aufnahmeeinrichtung 3 auf das Dichtungselement 16 drücken. Das Dichtungselement 16 wird etwas gequetscht und so verformt, dass das Dichtungselement 16 in die Freiräume FR zwischen die einzelnen Erhebungen 13 gedrückt wird. Durch das Quetschen und die daraus resultierende Verformung des Dichtungselements 16 ist das Lager 12 fest in der Aufnahmeeinrichtung 3 positioniert. Das Dichtungselement 16 dient als Bremse und verhindert, dass das Lager 12 und insbesondere eine Lageraußenring 18 verdreht wird. As can be seen in FIG. 6, the bearing 12 is positioned in the receiving device 3 . The sealing element 16 lies between the inner lateral surface 10 of the receiving device 3 and the outer lateral surface 17 of the bearing 12. The dimensions of the inner diameter of the receiving device 3, the outer diameter of the bearing 12 and the width of the cross-sectional area of the sealing element 16 are selected in such a way that the outer lateral surface 17 of the bearing 12 and the inner lateral surface 10 of the receiving device 3 onto the sealing element 16. The sealing element 16 is squeezed somewhat and deformed in such a way that the sealing element 16 is pressed into the free spaces FR between the individual elevations 13 . The bearing 12 is firmly positioned in the receiving device 3 as a result of the squeezing and the resulting deformation of the sealing element 16 . The sealing element 16 serves as a brake and prevents the bearing 12 and in particular a bearing outer ring 18 from being rotated.
Bezuaszeichen: reference sign:
1 Lagerschild 1 end shield
2 äußere Ringelement 2 outer ring element
3 Aufnahmeeinrichtung 4 Flaltestege 3 receiving device 4 folding bars
5 Elektromotor 5 electric motor
6 Stator 6 stator
7 Rotor 7 rotors
8 Speichenelement 9 Außenmantelfläche der Aufnahmeeinrichtung 8 spoke element 9 outer lateral surface of the receiving device
10 Innenmantelfläche der Aufnahmeeinrichtung 10 inner lateral surface of the receiving device
11 Fixiersteg 11 fixing bar
12 Lager 12 bearings
13 Erhebung 14a erste ringförmige Anordnungen von Erhebungen13 elevation 14a first annular arrays of elevations
14b zweite ringförmige Anordnungen von Erhebungen14b second annular arrays of elevations
15 ringförmiger Freiraum 15 annular clearance
16 Dichtungselement 16 sealing element
17 Außenmantelfläche des Lagers 18 Lageraußenring 17 Outer surface of the bearing 18 Bearing outer ring
FR Freiraum RW Rotorwelle FR clearance RW rotor shaft

Claims

Patentansprüche: Patent Claims:
1. Lagerschild (1 ) für einen Elektromotor (5) enthaltend eine Aufnahmeeinrichtung (3) mit einer Innenmantelfläche (10) zum Aufnehmen und Halten wenigstens eines Lagers (12) dadurch gekennzeichnet, dass wenigstens vier symmetrisch angeordnete, sich radial erstreckende Erhebungen (13) so an der Innenmantelfläche (10) der Aufnahmeeinrichtung1. Bearing plate (1) for an electric motor (5) containing a receiving device (3) with an inner lateral surface (10) for receiving and holding at least one bearing (12), characterized in that at least four symmetrically arranged, radially extending elevations (13) so on the inner lateral surface (10) of the receiving device
(3) positioniert sind, dass zwischen zwei an der Innenmantelfläche (10) innenliegenden Erhebungen (13) und zwei an der Innenmantelfläche (10) außenliegenden Erhebungen (13) ein Freiraum (15) zum Aufnehmen und Halten wenigstens eines Dichtungselements (16) enthalten ist. (3) are positioned such that there is a free space (15) for receiving and holding at least one sealing element (16) between two elevations (13) on the inside of the inner lateral surface (10) and two elevations (13) on the outside of the inner lateral surface (10). .
2. Lagerschild (1) nach Anspruch 1 , dadurch gekennzeichnet, dass der Freiraum (15) in Form einer Nut zwischen den Erhebungen (13) ausgestaltet ist. 2. Bearing plate (1) according to claim 1, characterized in that the free space (15) is designed in the form of a groove between the elevations (13).
3. Lagerschild (1) nach Anspruch 1 , dadurch gekennzeichnet, dass zwischen vier und zwölf Erhebungen (13) an der Innenmantelfläche (10) der Aufnahmeeinrichtung (3) positioniert sind. 3. Bearing plate (1) according to claim 1, characterized in that between four and twelve elevations (13) on the inner lateral surface (10) of the receiving device (3) are positioned.
4. Lagerschild (1) nach Anspruch 1 , dadurch gekennzeichnet, dass das wenigstens eine Dichtungselement (16) in Form eines O-Rings ausgestaltet ist. 4. Bearing plate (1) according to claim 1, characterized in that the at least one sealing element (16) is designed in the form of an O-ring.
EP21745297.8A 2020-07-23 2021-07-13 End shield Withdrawn EP4186148A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20187404.7A EP3944470A1 (en) 2020-07-23 2020-07-23 Bearing shield
PCT/EP2021/069455 WO2022017870A1 (en) 2020-07-23 2021-07-13 End shield

Publications (1)

Publication Number Publication Date
EP4186148A1 true EP4186148A1 (en) 2023-05-31

Family

ID=71783902

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20187404.7A Withdrawn EP3944470A1 (en) 2020-07-23 2020-07-23 Bearing shield
EP21745297.8A Withdrawn EP4186148A1 (en) 2020-07-23 2021-07-13 End shield

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20187404.7A Withdrawn EP3944470A1 (en) 2020-07-23 2020-07-23 Bearing shield

Country Status (4)

Country Link
US (1) US20230275486A1 (en)
EP (2) EP3944470A1 (en)
CN (1) CN115769472A (en)
WO (1) WO2022017870A1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235227A (en) * 1991-01-23 1993-08-10 Panavision International L.P. Noise and vibration dampened electric motor such as for use with a sound movie camera

Also Published As

Publication number Publication date
EP3944470A1 (en) 2022-01-26
CN115769472A (en) 2023-03-07
US20230275486A1 (en) 2023-08-31
WO2022017870A1 (en) 2022-01-27

Similar Documents

Publication Publication Date Title
DE102018200865B4 (en) Rotor for an electric machine
WO2003100296A1 (en) Standard drive, series with an intermediate flange
EP2964976B1 (en) Geared motor arrangement
EP2399333B1 (en) Rotor arrangement for an electric motor
WO2020016320A2 (en) Rotor for an electric motor, method for the production thereof, and electric motor
EP0749643A1 (en) Electric motor
WO2019171218A1 (en) Rotor unit and electric motor
EP4186148A1 (en) End shield
WO2018054599A1 (en) Electric drive unit having a cooling sleeve
WO2022178563A1 (en) Electromechanical drive
DE102019118828B4 (en) Parking lock device for an electric drive axle and electric drive axle with a parking lock device
DE102019122853A1 (en) Torque transmission component with an annular receiving groove for positioning a balancing mass; Electric motor and balancing process
WO2019214763A1 (en) Arrangement for securing at least one circlip against centrifugal force, which circlip is axially fastened on a rotor shaft of an electrical machine for positional securing, and use of an arrangement of this type
WO2003054875A1 (en) Spindle motor for hard disk drives with axial fixing of the bearing system
DE102021132595B4 (en) Electric drive system with two drive machines and stator screw connection on the housing side
WO2021259412A1 (en) Rotor and radial flux machine
WO2024083482A1 (en) Planetary transmission stage and electric drive system
DE102021104468B4 (en) Method for assembling an axial flux machine in a housing and axial flux machine and robot
DE102019120153B3 (en) Differential cover of a planet carrier secured by caulking
DE102020116612A1 (en) Rotor and radial flux machine
DE102021127531A1 (en) Rotor and rotary electric machine
DE102023200999A1 (en) Steering device with a handlebar
WO2023143655A1 (en) Electric drive unit with efficient mounting of two sun gears
EP3934064A1 (en) Rotor for electric machine with improved axial retention of the stator core and electric machine and vehicle with such a rotor
WO2023036358A1 (en) Rotor for an electric machine

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230223

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20230914