WO2007003512A1 - Bearing device, method for fixing a bearing device and electric machine provided therewith - Google Patents

Bearing device, method for fixing a bearing device and electric machine provided therewith Download PDF

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Publication number
WO2007003512A1
WO2007003512A1 PCT/EP2006/063440 EP2006063440W WO2007003512A1 WO 2007003512 A1 WO2007003512 A1 WO 2007003512A1 EP 2006063440 W EP2006063440 W EP 2006063440W WO 2007003512 A1 WO2007003512 A1 WO 2007003512A1
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WO
WIPO (PCT)
Prior art keywords
spring ring
retaining spring
mounting
bearing device
bearing
Prior art date
Application number
PCT/EP2006/063440
Other languages
German (de)
French (fr)
Inventor
Markus Heidrich
Christian Ernst
Yong-Duck Jhee
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
Priority to EP06763833A priority Critical patent/EP1902508A1/en
Publication of WO2007003512A1 publication Critical patent/WO2007003512A1/en

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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
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • 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

Definitions

  • Bearing device method for mounting a bearing device and electric machine with a bearing device
  • the invention is based on a bearing device according to the preamble of claim 1, a method for fastening a bearing device according to the term of claim 9 and an electric machine according to the preamble of claim 11.
  • Electric motors consist of mutually rotating parts, e.g. Pole housing with magnets, brush holder and anchor parts. It is known to use their bearings sintered bushings or calottes, which are impregnated with oil, as a warehouse. These are held by elastic retaining springs in correspondingly shaped recesses in brackets or lids, which are usually deep-drawn from steel. The retaining springs have resilient elements in the interior, which press the bearing and are firmly connected in the outer area with the straps or lids.
  • connection In order to fix the retaining springs, various types of connection are known, which are designed to be non-positive, positive or frictional, such as, for example, Bayonet locks, reshaping or riveting of rivet pins, which are formed by a deep-drawing process, pressing in and fixing on the outer diameter in correspondingly shaped sintered bearing seats.
  • the fixation must all operating forces, e.g. Shake, bearing forces, etc., record and allow for spherical bearings also their orientation.
  • a twisting moment of the fixation must not be too low, as this has an effect on the storage behavior during operation, such as spinning, and thus noise. On the other hand, too great a twisting moment makes it difficult to align the calotte.
  • the bearing device according to the invention for a bearing element of an electric machine proposes to provide in a receptacle of a mounting element at least one locking means with which a retaining spring ring on the mounting member can be latched. This eliminates a series of complex assembly steps. It is advantageous or the latching means are formed directly during deep drawing of the mounting member by a flow process of the material. In particular, the latching elements are formed counter to the molding direction, for example by material flowing counter to the molding direction during the molding process in order to form the latching elements.
  • the one or more locking means is / are designed so that they lock in a movement of a latched part, in particular of the retaining spring ring, against a mounting direction in which they are mounted on the electric machine.
  • the storage device can be connected to the electric machine in a single assembly step. It is only one mounting direction necessary, in particular, a rotational movement can be avoided.
  • the elements to be mounted in particular bearing element, retaining spring ring and mounting element can be assembled in a type of sandwich construction and connected to one another and to the electric machine in one step. This makes it possible to dispense with an alignment of the elements to each other during assembly ge. There are no test stations for checking assembly steps.
  • the storage device is compact and requires only a small space or installation depth and therefore allows a shortening of the electric machine.
  • the mounting element which is preferably designed as a bracket or cover, only a low thermoforming ratio is necessary. Therefore, a low cost, low material quality is sufficient. Furthermore, material can be saved.
  • the mounting member and the retaining spring ring have a simple structure and a simple geometry, as can be dispensed with punching and the like. The proposed embodiment automatically results in a stiffening of the mounting element.
  • the latching means is arranged in the installed state of the electrical machine facing concave trough of the mounting member.
  • the retaining spring ring has on its outer circumference an edge projecting in the axial direction, with which an undercut of the locking means can be engaged.
  • the retaining spring ring has a simple, because annular geometry.
  • the edge is formed on a concave to the mounting element formed curvature. This increases the stability and the elasticity of the retaining spring ring.
  • spring tongues are arranged on the retaining spring ring at the opening for receiving the bearing element, which are inclined in the axial direction, the spring tongues and the outer peripheral edge facing axially in the same direction. This allows a particularly simple assembly of the assembly in sandwich construction.
  • the locking means is arranged on a convex toward the locking means bead. This allows an improved rigidity of the mounting element can be achieved.
  • an advantageous stiffening of the mounting element results when in the region of the edge of the retaining spring ring in the mounting element a recess is formed into which the retaining spring ring dips with its curvature.
  • the depression further facilitates over-pressing of the retaining spring ring for latching with the locking means or the locking means.
  • At least three locking means can be arranged on a radius on the mounting element. Conveniently circumferentially equally distributed six locking means.
  • the number of latching means, their design, the embodiment of the retaining spring counterpart of the latching means or of the latching means can be designed as required by a person skilled in the art.
  • a method for fastening a bearing device to an electrical machine in which a retaining spring ring is placed in a mounting test on the electric machine, a bearing element is inserted into a central opening of the retaining spring ring, a mounting element with its mounting is placed over the bearing element and the mounting member is pushed axially by a predetermined distance in the direction of the mounting test, which is sufficient to cause a locking between the retaining spring ring and one or more locking means of the mounting member.
  • the individual elements are combined and locked together with a single step.
  • the bearing device can be arranged on the electric machine.
  • the bearing element is centered on the bearing seat of the shaft of the electric machine. Due to the elastic deformation of the resiliently executed inner contour of the mounting element, a sufficient holding force is generated, and the retaining spring ring is securely fixed in its position.
  • the distance traveled by the mounting element or an end position of a displacement means which causes the displacement of the mounting element by the distance monitored. If the shift electro-pneumatic, this can be done automatically and the end position of a corresponding displacement cylinder are queried with high security.
  • Figures 1 a, b, c show a sequence of preferred method steps in assembling a preferred storage device and an electric machine
  • FIG. 2 shows a section through the preferred storage device in Fig. 1.
  • FIG. 3 shows a detail of the bearing device of FIG. 2;
  • FIG. 4 a, b is a perspective view of the bearing device of Figure 2 in front view (Fig. 4a) and rear view (Fig. 4b).
  • FIG. Ia-Ic A sequence of preferred method steps in the assembly of a preferred storage device 10 with an electric machine 30 is shown in Fig. Ia-Ic.
  • the bearing device 10 comprises a bearing element 11, which is inserted into a central opening 18 of a retaining spring ring 13.
  • An arrow indicates an axial direction, which corresponds overall to the mounting direction 29.
  • the bearing element 11, which is preferably designed as a sintered bearing in the form of a dome, has a bore 12 into which, in the mounted state, a shaft 31 of the electric machine 30 engages.
  • the retaining spring ring 13 is annular and has inside spring tongues 17 which protrude into the opening 18 and are inclined axially in the mounting direction 29.
  • the spring tongues 17 hold the bearing element 11 firmly and block slipping out of the bearing element 11 against the mounting direction 29.
  • an edge 15 is formed, which is axially bent in the mounting direction 29.
  • the edge 15 is based on a curvature 16, which is arched to the mounting member 20.
  • the edge 15 and the spring tongues 17 point in the same axial direction.
  • the mounting member 20 is placed, the bearing element 11 is to dip into a receptacle 21 of the mounting member 20.
  • the receptacle 21 is provided with an edge 26. hen, which is formed so that the bearing element 11 between the spring tongues 17 and the edge 26 is held securely and stably, in particular, follows the edge 26 in its internal geometry of the contour of the bearing element eleventh
  • the mounting member 20 is preferably formed as a bracket with two laterally projecting tabs 22 and has a central recess 25 which opens to Haltefe- derring 13 and bearing element 11 out. Between the edge 26 of the receptacle 21 and the tabs 22, the mounting member 20 has a designed as an annular disc body 27. On its rear side, non-recognizable locking means are provided in the figure, which can engage with the edge 15 of the retaining spring ring 13.
  • the bearing device 10 of the retaining spring ring 13, bearing element 11 and mounting member 20 is placed in the mounting direction 29 on the shaft 31 of the electric machine 30, wherein the bearing member 11 comes to rest on a bearing seat of the shaft 31. If a pressure is exerted on the mounting element 20 axially in the mounting direction 29, this slides with its locking means over the edge 15 of the retaining spring ring 13 and locked with this. At the same time thereby also the bearing element 11 is fixed axially and radially. Subsequently, the mounting member 20 may be connected to the electric machine, e.g. screwed or clipped.
  • Fig. 2 shows a section through the preferred bearing device 10 of FIG. 1, in the locking means 23 can be seen, which are under attacked by the edge 15 of the retaining spring ring 13.
  • These latching means 23 are opposite to the direction of formation of the mounting member 20, which corresponds to the direction of arrow 29, formed by, for example, material flows in the molding in the opposite direction.
  • the bearing element 11, which is immersed in the central opening 18 of the retaining spring ring 13, abuts an inner contour of the edge 26 of the mounting member 20 and is clamped between it and the spring tongues 17.
  • the edge 26 points in the assembled state on the electric machine 30 to the outside, while the spring tongues 17 point inwards to the electric machine 30.
  • Fig. 3 shows in a detailed view alternative locking means 23.
  • the edge 15 is based on a curvature 16, which can dive into a small recess 28 of the mounting member 20, which facilitates over-pressing of the mounting member 20 for locking between the edge 15 and locking means 23 during assembly.
  • FIG. 4 a shows a front view
  • FIG. 4 b shows a rear view of the bearing device 10 from the preceding figures.
  • beads 26 can be seen in the body 27 of the mounting element 20, which can increase its rigidity by 10-15%.
  • locking elements 23 can be seen, which are each arranged on a bead 26, wherein the beads 26 each bulge to the locking means 23.
  • the locking elements 23 overlap with their undercuts 24 the edge 15 of the retaining spring ring 13th
  • the storage device according to the invention is not limited to an electric motor, but can be used in a variety of electrical machine, for example, in generators.

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

Abstract

The invention relates to a bearing device for a bearing element (11) of an electric machine (), wherein said bearing element is arranged in the central opening (18) of a holding spring ring (13) which is fixedly connectable to a mounting element (20) in the cavity (21) thereof and said mounting element (20) is mountable on the electric machine (30). The cavity (21) of the mounting element (20) comprises at least one locking means (23) which makes it possible to lock the holding spring ring (13) on the mounting element (20). A method for mounting the bearing device (10) on the electric machine (30) and the electric machine provided with the inventive bearing device are also disclosed.

Description

Lagervorrichtung, Verfahren zur Befestigung einer Lagervorrichtung und elektrische Maschine mit einer LagervorrichtungBearing device, method for mounting a bearing device and electric machine with a bearing device
Stand der TechnikState of the art
Die Erfindung geht aus von einer Lagervorrichtung nach dem Oberbegriff des Anspruchs 1, einem verfahren zur Befestigung einer Lagervorrichtung nach dem O- berbegriff des Anspruchs 9 und einer elektrischen Maschine nach dem Oberbegriff des Anspruchs 11.The invention is based on a bearing device according to the preamble of claim 1, a method for fastening a bearing device according to the term of claim 9 and an electric machine according to the preamble of claim 11.
Elektromotoren bestehen aus gegeneinander drehenden Teilen, z.B. Polgehäuse mit Magneten, Bürstenhalter und Ankerteilen. Es ist bekannt, zu deren Lagerung gesinterte Buchsen oder Kalotten, die mit Öl getränkt sind, als Lager zu verwenden. Diese werden durch elastische Haltefedern in entsprechend geformten Ausneh- mungen in Bügeln oder Deckeln gehalten, welche üblicherweise aus Stahl tiefgezogen sind. Die Haltefedern weisen im Innenbereich federnde Elemente auf, die das Lager anpressen und werden im Außenbereich mit den Bügeln bzw. Deckeln fest verbunden. Zur Fixierung der Haltefedern sind verschiedene Verbindungsarten bekannt, die kraftschlüssig, formschlüssig oder reibschlüssig ausgebildet sind, wie z.B. Bajonettverschlüsse, Umformen bzw. Vernieten von Nietzapfen, die durch einen Tiefziehprozess ausgeformt sind, Einpressen und Fixieren am Außendurchmesser in entsprechend geformten Sinterlagersitzen. Die Fixierung muss alle Betriebskräfte, z.B. Schütteln, Lagerkräfte etc., aufnehmen können und bei Kalottenlagern auch deren Ausrichtung ermöglichen. Ein Verdrehmoment der Fixierung darf nicht zu gering sein, da dies Einfluss auf das Lagerungsverhalten im Betrieb, etwa Durchdrehen, und damit Geräusche zur Folge hat. Andererseits erschwert ein zu großes Verdrehmoment das Ausrichten der Kalotte.Electric motors consist of mutually rotating parts, e.g. Pole housing with magnets, brush holder and anchor parts. It is known to use their bearings sintered bushings or calottes, which are impregnated with oil, as a warehouse. These are held by elastic retaining springs in correspondingly shaped recesses in brackets or lids, which are usually deep-drawn from steel. The retaining springs have resilient elements in the interior, which press the bearing and are firmly connected in the outer area with the straps or lids. In order to fix the retaining springs, various types of connection are known, which are designed to be non-positive, positive or frictional, such as, for example, Bayonet locks, reshaping or riveting of rivet pins, which are formed by a deep-drawing process, pressing in and fixing on the outer diameter in correspondingly shaped sintered bearing seats. The fixation must all operating forces, e.g. Shake, bearing forces, etc., record and allow for spherical bearings also their orientation. A twisting moment of the fixation must not be too low, as this has an effect on the storage behavior during operation, such as spinning, and thus noise. On the other hand, too great a twisting moment makes it difficult to align the calotte.
Bei der Montage des Lagers in den Bügel oder Deckel sind mehrere aufwändige Schritte erforderlich, z.B. Zentrieren, Ausrichten, Nieten, Verdrehen etc., die nacheinander erfolgen müssen. Auch ist meist eine Überprüfung jeder einzelnen Montageoperation notwendig.When assembling the bearing in the stirrup or lid, several expensive steps are required, e.g. Centering, aligning, riveting, twisting, etc., which must be done one after the other. Also, usually a review of each individual assembly operation is necessary.
Vorteile der Erfindung Die erfindungsgemäße Lagervorrichtung für ein Lagerelement einer elektrischen Maschine schlägt vor, in einer Aufnahme eines Montageelements mindestens ein Rastmittel vorzusehen, mit dem ein Haltefederring am Montageelement verrastbar ist. Damit entfällt eine Reihe von aufwändigen Montageschritten. Vorteilhaft ist das oder sind die Rastmittel direkt beim Tiefziehen des Montageelements durch einen Fließprozess aus dem Material gebildet. Insbesondere sind die Rastelemente entgegen der Ausformungsrichtung ausgebildet, indem beispielsweise beim For- mungsprozess Material entgegen der Ausformungsrichtung fließt, um die Rastele- mente auszubilden. Das oder die Rastmittel ist/sind so ausgebildet, dass sie bei einer Bewegung eines verrasteten Teils, insbesondere des Haltefederrings, entgegen einer Montagerichtung sperren, in der sie auf die elektrische Maschine montierbar sind. Vorteilhaft ergibt sich, dass die Lagervorrichtung in einem einzigen Montageschritt mit der elektrischen Maschine verbindbar ist. Es ist nur eine Mon- tagerichtung notwendig, insbesondere kann eine Drehbewegung vermieden werden. Dabei sind die zumontierenden Elemente, insbesondere Lagerelement, Haltefederring und Montageelement in einer Art Sandwichbauweise zusammensetzbar und in einem Schritt miteinander und mit der elektrischen Maschine verbindbar. Hiermit ist es möglich, auf ein Ausrichten der Elemente zueinander bei der Monta- ge zu verzichten. Es entfallen Prüfstationen zur Überprüfung von Montageschritten. Die Lagervorrichtung baut kompakt und erfordert nur einen geringen Bauraum bzw. Einbautiefe und ermöglicht daher eine Verkürzung der elektrischen Maschine. Bei der Herstellung des Montageelements, das vorzugsweise als Bügel oder Deckel ausgebildet ist, ist nur ein geringes Tiefziehverhältnis notwendig. Daher ist eine kostengünstige, geringe Materialgüte ausreichend. Weiterhin kann Material eingespart werden. Das Montageelement und auch der Haltefederring weisen einen einfachen Aufbau und eine einfache Geometrie auf, da auf Ausstanzungen und dergleichen verzichtet werden kann. Durch die vorgeschlagene Ausgestaltung ergibt sich automatisch eine Versteifung des Montageelements.Advantages of the invention The bearing device according to the invention for a bearing element of an electric machine proposes to provide in a receptacle of a mounting element at least one locking means with which a retaining spring ring on the mounting member can be latched. This eliminates a series of complex assembly steps. It is advantageous or the latching means are formed directly during deep drawing of the mounting member by a flow process of the material. In particular, the latching elements are formed counter to the molding direction, for example by material flowing counter to the molding direction during the molding process in order to form the latching elements. The one or more locking means is / are designed so that they lock in a movement of a latched part, in particular of the retaining spring ring, against a mounting direction in which they are mounted on the electric machine. Advantageously, it follows that the storage device can be connected to the electric machine in a single assembly step. It is only one mounting direction necessary, in particular, a rotational movement can be avoided. In this case, the elements to be mounted, in particular bearing element, retaining spring ring and mounting element can be assembled in a type of sandwich construction and connected to one another and to the electric machine in one step. This makes it possible to dispense with an alignment of the elements to each other during assembly ge. There are no test stations for checking assembly steps. The storage device is compact and requires only a small space or installation depth and therefore allows a shortening of the electric machine. In the production of the mounting element, which is preferably designed as a bracket or cover, only a low thermoforming ratio is necessary. Therefore, a low cost, low material quality is sufficient. Furthermore, material can be saved. The mounting member and the retaining spring ring have a simple structure and a simple geometry, as can be dispensed with punching and the like. The proposed embodiment automatically results in a stiffening of the mounting element.
In einer günstigen Ausgestaltung ist das Rastmittel in eingebautem Zustand einer der elektrischen Maschine zugewandten konkaven Mulde des Montageelements angeordnet. Dadurch ergibt sich eine vorteilhafte Steifigkeit des Montageelements. In einer vorteilhaft einfachen geometrischen Ausgestaltung weist der Haltefeder- ring an seinem Außenumfang einen in axialer Richtung abstehenden Rand auf, mit der eine Hinterschneidung des Rastmittels untergreifbar ist. Der Haltefederring weist eine einfache, weil ringförmige Geometrie auf.In a favorable embodiment, the latching means is arranged in the installed state of the electrical machine facing concave trough of the mounting member. This results in an advantageous rigidity of the mounting element. In an advantageously simple geometric configuration, the retaining spring ring has on its outer circumference an edge projecting in the axial direction, with which an undercut of the locking means can be engaged. The retaining spring ring has a simple, because annular geometry.
In einer günstigen Ausgestaltung ist der Rand an eine konkav zum Montageelement ausgebildete Wölbung angeformt. Dies erhöht die Stabilität und die Elastizität des Haltefederrings.In a favorable embodiment, the edge is formed on a concave to the mounting element formed curvature. This increases the stability and the elasticity of the retaining spring ring.
In einer weiteren günstigen Ausgestaltung sind am Haltefederring an der Öffnung zur Aufnahme des Lagerelements innenumfänglich Federzungen angeordnet, die in axialer Richtung geneigt sind, wobei die Federzungen und der außenumfänglich abstehende Rand axial in dieselbe Richtung weisen. Dies ermöglicht eine besonders einfache Montage der Anordnung in Sandwichbauweise.In a further advantageous embodiment, spring tongues are arranged on the retaining spring ring at the opening for receiving the bearing element, which are inclined in the axial direction, the spring tongues and the outer peripheral edge facing axially in the same direction. This allows a particularly simple assembly of the assembly in sandwich construction.
In einer weiteren günstigen Ausgestaltung ist das Rastmittel an einer zu dem Rastmittel hin gewölbten Sicke angeordnet. Damit kann eine verbesserte Steifigkeit des Montageelements erreicht werden.In a further advantageous embodiment, the locking means is arranged on a convex toward the locking means bead. This allows an improved rigidity of the mounting element can be achieved.
In einer weiteren günstigen Ausgestaltung ergibt sich eine vorteilhafte Versteifung des Montageelements, wenn im Bereich des Rands des Haltefederrings im Montageelement eine Vertiefung ausgebildet ist, in die der Haltefederring mit seiner Wölbung eintaucht. Durch die Vertiefung ist weiterhin ein Überpressen des Haltefederrings zum Verrasten mit dem oder den Rastmitteln erleichtert.In a further advantageous embodiment, an advantageous stiffening of the mounting element results when in the region of the edge of the retaining spring ring in the mounting element a recess is formed into which the retaining spring ring dips with its curvature. The depression further facilitates over-pressing of the retaining spring ring for latching with the locking means or the locking means.
Es können wenigstens drei Rastmittel auf einem Radius am Montagelement angeordnet sein. Günstig sind auch umfänglich gleich verteilte sechs Rastmittel. Die Zahl der Rastmittel, deren Ausgestaltung, die Ausgestaltung des haltefederringsei- tigen Gegenparts des Rastmittels oder der Rastmittel können von einem Fachmann nach Bedarf gestaltet werden.At least three locking means can be arranged on a radius on the mounting element. Conveniently circumferentially equally distributed six locking means. The number of latching means, their design, the embodiment of the retaining spring counterpart of the latching means or of the latching means can be designed as required by a person skilled in the art.
Es wird ferner ein Verfahren zur Befestigung einer Lagervorrichtung an einer e- lektrischen Maschine vorgeschlagen, bei dem ein Haltefederring in ein Montagenest an der elektrischen Maschine gelegt wird, ein Lagerelement in eine zentrale Öffnung des Haltefederrings eingelegt wird, ein Montageelement mit seiner Auf- nahme über das Lagerelement gelegt wird und das Montageelement axial um eine vorgegebene Strecke in Richtung auf das Montagenest geschoben wird, die ausreicht, um ein Verrasten zwischen Haltefederring und einem oder mehreren Rastmitteln des Montageelements zu bewirken. Es können mehrere bisher einzeln durchzuführende Verfahrensschritte zusammengefasst werden. Die einzelnen Elemente werden zusammengelegt und mit einem einzigen Schritt miteinander verbunden bzw. verrastet. Zugleich kann die Lagervorrichtung an der elektrischen Maschine angeordnet werden. Vorzugsweise wird das Lagerelement am Lagersitz der Welle der elektrischen Maschine zentriert. Durch die elastische Verformung der federnd ausgeführten Innenkontur des Montageelements wird eine ausreichende Haltekraft erzeugt, und der Haltefederring wird sicher in seiner Position fixiert.Furthermore, a method for fastening a bearing device to an electrical machine is proposed, in which a retaining spring ring is placed in a mounting test on the electric machine, a bearing element is inserted into a central opening of the retaining spring ring, a mounting element with its mounting is placed over the bearing element and the mounting member is pushed axially by a predetermined distance in the direction of the mounting test, which is sufficient to cause a locking between the retaining spring ring and one or more locking means of the mounting member. It can be summarized several previously performed individually process steps. The individual elements are combined and locked together with a single step. At the same time, the bearing device can be arranged on the electric machine. Preferably, the bearing element is centered on the bearing seat of the shaft of the electric machine. Due to the elastic deformation of the resiliently executed inner contour of the mounting element, a sufficient holding force is generated, and the retaining spring ring is securely fixed in its position.
In einem günstigen Verfahrensschritt wird die zurückgelegte Strecke des Montageelements oder eine Endposition eines Verschiebemittels, welches die Verschiebung des Montageelements um die Strecke bewirkt, überwacht. Erfolgt die Verschiebung elektro-pneumatisch, kann dies automatisiert erfolgen und die Endposition eines entsprechenden Verschiebezylinders mit hoher Sicherheit abgefragt werden.In a favorable method step, the distance traveled by the mounting element or an end position of a displacement means, which causes the displacement of the mounting element by the distance monitored. If the shift electro-pneumatic, this can be done automatically and the end position of a corresponding displacement cylinder are queried with high security.
Es wird ferner eine elektrische Maschine mit einer Lagervorrichtung vorgeschla- gen, in der ein Lagerelement mit einem Haltefederring gehalten ist, welcher mit einem Montageelement befestigt ist, wobei das Montageelement mit dem Haltefederring so verrastbar ist, dass das Lagerelement zwischen Montageelement und Haltefederring stabil gehalten ist.It is also proposed an electric machine with a bearing device gene in which a bearing element is held with a retaining spring ring, which is fastened with a mounting element, wherein the mounting member with the retaining spring ring is latched so that the bearing element between the mounting member and retaining spring ring is held stable ,
Zeichnungendrawings
Weitere Ausführungsformen, Aspekte und Vorteile der Erfindung ergeben sich auch unabhängig von ihrer Zusammenfassung in Ansprüchen, ohne Beschränkung der Allgemeinheit aus nachfolgend anhand von Zeichnungen dargestellten Ausfüh- rungsbeispielen der Erfindung.Further embodiments, aspects and advantages of the invention will become apparent independently of their summary in claims, without limiting the generality of illustrated below with reference to drawings embodiments of the invention.
Im Folgenden zeigen: Fig. 1 a,b,c eine Abfolge von bevorzugten Verfahrensschritten beim Zusammensetzen einer bevorzugten Lagervorrichtung und einer elektrischen Maschine;In the following show: Figures 1 a, b, c show a sequence of preferred method steps in assembling a preferred storage device and an electric machine;
Fig. 2 einen Schnitt durch die bevorzugte Lagervorrichtung in Fig. 1 ; Fig. 3 ein Detail der Lagervorrichtung der Fig. 2; und2 shows a section through the preferred storage device in Fig. 1. FIG. 3 shows a detail of the bearing device of FIG. 2; FIG. and
Fig. 4 a,b eine perspektivische Ansicht der Lagervorrichtung der Figur 2 in Vorderansicht (Fig. 4a) und Rückansicht (Fig. 4b).4 a, b is a perspective view of the bearing device of Figure 2 in front view (Fig. 4a) and rear view (Fig. 4b).
Beschreibung des AusführungsbeispielsDescription of the embodiment
Eine Abfolge von bevorzugten Verfahrensschritten beim Zusammensetzen einer bevorzugten Lagervorrichtung 10 mit einer elektrischen Maschine 30 ist in Fig. Ia -Ic dargestellt.A sequence of preferred method steps in the assembly of a preferred storage device 10 with an electric machine 30 is shown in Fig. Ia-Ic.
Die Lagervorrichtung 10 umfasst ein Lagerelement 11, das in eine zentrale Öffnung 18 eines Haltefederrings 13 eingesetzt wird. Ein Pfeil deutet eine axiale Richtung an, welche insgesamt der Montagerichtung 29 entspricht. Das Lagerelement 11, das vorzugsweise als Sinterlager in Form einer Kalotte ausgebildet ist, weist eine Bohrung 12 auf, in welche im montierten Zustand eine Welle 31 der elektri- sehen Maschine 30 eingreift.The bearing device 10 comprises a bearing element 11, which is inserted into a central opening 18 of a retaining spring ring 13. An arrow indicates an axial direction, which corresponds overall to the mounting direction 29. The bearing element 11, which is preferably designed as a sintered bearing in the form of a dome, has a bore 12 into which, in the mounted state, a shaft 31 of the electric machine 30 engages.
Der Haltefederring 13 ist ringförmig ausgebildet und weist innenumfänglich Federzungen 17 auf, die in die Öffnung 18 ragen und axial in die Montagerichtung 29 geneigt sind. Die Federzungen 17 halten das Lagerelement 11 fest und blockieren ein Herausgleiten des Lagerelements 11 entgegen der Montagerichtung 29.The retaining spring ring 13 is annular and has inside spring tongues 17 which protrude into the opening 18 and are inclined axially in the mounting direction 29. The spring tongues 17 hold the bearing element 11 firmly and block slipping out of the bearing element 11 against the mounting direction 29.
An einem Außenumfang 14 des Haltefederrings 13 ist ein Rand 15 ausgebildet, der in Montagerichtung 29 weisend axial umgebogen ist. Der Rand 15 geht von einer Wölbung 16 aus, die zu dem Montageelement 20 hin gewölbt ist. Der Rand 15 und die Federzungen 17 weisen in dieselbe axiale Richtung.On an outer periphery 14 of the retaining spring ring 13, an edge 15 is formed, which is axially bent in the mounting direction 29. The edge 15 is based on a curvature 16, which is arched to the mounting member 20. The edge 15 and the spring tongues 17 point in the same axial direction.
Über das Ensemble von Haltefederring 13 und Lagerelement 11 wird das Montageelement 20 platziert, wobei das Lagerelement 11 in eine Aufnahme 21 des Montageelements 20 eintauchen soll. Die Aufnahme 21 ist mit einem Rand 26 verse- hen, der so ausgebildet ist, dass das Lagerelement 11 zwischen den Federzungen 17 und dem Rand 26 sicher und stabil gehalten ist, insbesondere folgt der Rand 26 in seiner Innengeometrie der Kontur des Lagerelements 11.About the ensemble of retaining spring ring 13 and bearing element 11, the mounting member 20 is placed, the bearing element 11 is to dip into a receptacle 21 of the mounting member 20. The receptacle 21 is provided with an edge 26. hen, which is formed so that the bearing element 11 between the spring tongues 17 and the edge 26 is held securely and stably, in particular, follows the edge 26 in its internal geometry of the contour of the bearing element eleventh
Das Montageelement 20 ist vorzugsweise als Bügel mit zwei seitlich abstehenden Laschen 22 ausgebildet und weist eine zentrale Mulde 25 auf, die sich zu Haltefe- derring 13 und Lagerelement 11 hin öffnet. Zwischen dem Rand 26 der Aufnahme 21 und den Laschen 22 weist das Montageelement 20 einen als ringförmige Scheibe ausgebildeten Körper 27 auf. Auf dessen Rückseite sind in der Figur nicht er- kennbare Rastmittel vorgesehen, die mit dem Rand 15 des Haltefederrings 13 ver- rasten können.The mounting member 20 is preferably formed as a bracket with two laterally projecting tabs 22 and has a central recess 25 which opens to Haltefe- derring 13 and bearing element 11 out. Between the edge 26 of the receptacle 21 and the tabs 22, the mounting member 20 has a designed as an annular disc body 27. On its rear side, non-recognizable locking means are provided in the figure, which can engage with the edge 15 of the retaining spring ring 13.
Die Lagervorrichtung 10 aus Haltefederring 13, Lager element 11 und Montageelement 20 wird in Montagerichtung 29 auf die Welle 31 der elektrischen Maschi- ne 30 gesetzt, wobei das Lagerelement 11 auf einem Lagersitz der Welle 31 zur Anlage kommt. Wird axial in Montagerichtung 29 ein Druck auf das Montageelement 20 ausgeübt, gleitet dieses mit seinen Rastmitteln über den Rand 15 des Haltefederrings 13 und verrastet mit diesem. Gleichzeitig ist dadurch auch das Lagerelement 11 axial und radial festgelegt. Anschließend kann das Montageelement 20 mit der elektrischen Maschine verbunden z.B. verschraubt oder festgeclipst werden.The bearing device 10 of the retaining spring ring 13, bearing element 11 and mounting member 20 is placed in the mounting direction 29 on the shaft 31 of the electric machine 30, wherein the bearing member 11 comes to rest on a bearing seat of the shaft 31. If a pressure is exerted on the mounting element 20 axially in the mounting direction 29, this slides with its locking means over the edge 15 of the retaining spring ring 13 and locked with this. At the same time thereby also the bearing element 11 is fixed axially and radially. Subsequently, the mounting member 20 may be connected to the electric machine, e.g. screwed or clipped.
Fig. 2 zeigt einen Schnitt durch die bevorzugte Lagervorrichtung 10 aus Fig. 1, in der Rastmittel 23 erkennbar sind, die von dem Rand 15 des Haltefederrings 13 untergriffen sind. Diese Rastmittel 23 sind entgegen der Ausformungsrichtung des Montageelementes 20, die der Pfeilrichtung 29 entspricht, ausgebildet, indem beispielsweise Material bei der Ausformung in die entgegen gesetzte Richtung fließt. Es ist erkennbar, dass das Lagerelement 11, das in die zentrale Öffnung 18 des Haltefederrings 13 eingetaucht ist, an einer Innenkontur des Rands 26 des Monta- geelements 20 anliegt und zwischen diesem und den Federzungen 17 eingespannt ist. Der Rand 26 weist im montierten Zustand auf der elektrischen Maschine 30 nach außen, während die Federzungen 17 nach innen zur elektrischen Maschine 30 weisen. Fig. 3 zeigt in einer Detaildarstellung alternative Rastmittel 23. Der in axialer Richtung in Montagerichtung 29 abstehende Rand 15 untergreift das Rastmittel 23 an seiner Hinterschneidung 24 und verhindert so ein Herausrutschen des Haltefeder- rings 13 und des Lagerelements 11 entgegen der Montagerichtung 29. Die Rastmit- tel 23 selbst sind wiederum entgegen der Montagerichtung 29 ausgebildet.Fig. 2 shows a section through the preferred bearing device 10 of FIG. 1, in the locking means 23 can be seen, which are under attacked by the edge 15 of the retaining spring ring 13. These latching means 23 are opposite to the direction of formation of the mounting member 20, which corresponds to the direction of arrow 29, formed by, for example, material flows in the molding in the opposite direction. It can be seen that the bearing element 11, which is immersed in the central opening 18 of the retaining spring ring 13, abuts an inner contour of the edge 26 of the mounting member 20 and is clamped between it and the spring tongues 17. The edge 26 points in the assembled state on the electric machine 30 to the outside, while the spring tongues 17 point inwards to the electric machine 30. Fig. 3 shows in a detailed view alternative locking means 23. The projecting in the mounting direction 29 in the axial direction of the edge 15 engages under the catch 23 on its undercut 24 and thus prevents slipping out of Haltefeder- ring 13 and the bearing element 11 against the mounting direction 29. Die Rastmit - Tel 23 themselves are again formed opposite to the mounting direction 29.
Der Rand 15 geht von einer Wölbung 16 aus, die in eine kleine Ausnehmung 28 des Montageelements 20 eintauchen kann, die ein Überpressen des Montageelements 20 zum Verrasten zwischen Rand 15 und Rastmittel 23 bei der Montage erleichtert.The edge 15 is based on a curvature 16, which can dive into a small recess 28 of the mounting member 20, which facilitates over-pressing of the mounting member 20 for locking between the edge 15 and locking means 23 during assembly.
Fig. 4a zeigt eine Vorderansicht und Fig. 4b eine Rückansicht der Lagervorrichtung 10 aus den vorangegangenen Figuren. In der Darstellung sind Sicken 26 im Körper 27 des Montageelements 20 zu erkennen, welche dessen Steifigkeit um 10- 15% erhöhen können.FIG. 4 a shows a front view and FIG. 4 b shows a rear view of the bearing device 10 from the preceding figures. In the illustration, beads 26 can be seen in the body 27 of the mounting element 20, which can increase its rigidity by 10-15%.
Innerhalb der Mulde 25, in der der Haltefederring 13 aufgenommen ist, sind Rastelemente 23 zu erkennen, die jeweils an einer Sicke 26 angeordnet sind, wobei sich die Sicken 26 jeweils zum Rastmittel 23 wölben. Die Rastelemente 23 übergreifen mit ihren Hinterschneidungen 24 den Rand 15 des Haltefederrings 13.Within the trough 25, in which the retaining spring ring 13 is received, locking elements 23 can be seen, which are each arranged on a bead 26, wherein the beads 26 each bulge to the locking means 23. The locking elements 23 overlap with their undercuts 24 the edge 15 of the retaining spring ring 13th
Die erfindungsgemäße Lagervorrichtung ist nicht auf einen Elektromotor beschränkt, sondern kann bei einer Vielzahl von elektrischen Maschine, beispielsweise auch bei Generatoren eingesetzt werden. The storage device according to the invention is not limited to an electric motor, but can be used in a variety of electrical machine, for example, in generators.

Claims

Patentansprüche claims
1. Lagervorrichtung für ein Lagerelement (11) einer elektrischen Maschine (), wobei das Lagerelement (11) in einer zentralen Öffnung (18) eines Haltefe- derrings (13) und der Haltefederring (13) in einer Aufnahme (21) eines Montageelements (20) mit diesem fest verbindbar ist, welches an der elektrischen Maschine (30) montierbar ist, dadurch gekennzeichnet, dass in der Auf- nähme (21) des Montageelements (20) mindestens ein Rastmittel (23) vorgesehen ist, mit dem der Haltefederring (13) am Montageelement (20) ver- rastbar ist.1. A bearing device for a bearing element (11) of an electrical machine (10), wherein the bearing element (11) in a central opening (18) of a Haltefe- derrings (13) and the retaining spring ring (13) in a receptacle (21) of a mounting element ( 20) can be fixedly connected to the latter, which can be mounted on the electric machine (30), characterized in that at least one latching means (23) is provided in the receptacle (21) of the mounting element (20), with which the retaining spring ring ( 13) on the mounting element (20) can be latched.
2. Lagervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Rastmittel (23) in eingebautem Zustand einer der elektrischen Maschine (30) zugewandten konkaven Mulde (25) angeordnet ist.2. Storage device according to claim 1, characterized in that the latching means (23) in the installed state of the electric machine (30) facing concave trough (25) is arranged.
3. Lagervorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Haltefederring (13) an seinem Außenumfang (14) einen in axialer Rich- tung (29) abstehenden Rand (15) aufweist, mit der eine Hinterschneidung3. Bearing device according to claim 1 or 2, characterized in that the retaining spring ring (13) on its outer circumference (14) in the axial direction (29) protruding edge (15), with an undercut
(24) des Rastmittels (23) untergreifbar ist.(24) of the latching means (23) can be engaged under.
4. Lagervorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Rand (15) an eine konkav zum Montageelement (20) ausgebildete Wölbung (16) angeformt ist.4. Storage device according to claim 3, characterized in that the edge (15) is formed on a concave to the mounting element (20) formed curvature (16).
5. Lagervorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass am Haltefederring (13) an der Öffnung (18) zur Aufnahme des Lagerelements (11) innenumfänglich Federzungen (17) angeordnet sind, die in axia- ler Richtung geneigt sind, wobei die Federzungen (17) und der außenumfänglich abstehende Rand (15) axial in dieselbe Richtung weisen.5. Bearing device according to claim 3 or 4, characterized in that on the retaining spring ring (13) at the opening (18) for receiving the bearing element (11) inside spring tongues (17) are arranged, which are inclined in the axial direction ller, wherein the Have spring tongues (17) and the outer circumferentially protruding edge (15) axially in the same direction.
6. Lagervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Rastmittel (13) an einer zu dem Rastmittel (13) hin gewölbten Sicke (23) angeordnet ist. 6. Bearing device according to one of the preceding claims, characterized in that the latching means (13) is arranged on a to the latching means (13) towards arched bead (23).
7. Lagervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass im Bereich des Rands (15) des Haltefederrings (13) im Montageelement (20) eine Vertiefung (28) ausgebildet ist, in die der Rand (15) mit seiner Wölbung (16) eintaucht.7. Bearing device according to one of the preceding claims, characterized in that in the region of the edge (15) of the retaining spring ring (13) in the mounting member (20) has a recess (28) is formed, in which the edge (15) with its curvature (16 immersed).
8. Lagervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens drei Rastmittel (23) auf einem Radius am Montagelement (20) angeordnet sind.8. Bearing device according to one of the preceding claims, characterized in that at least three locking means (23) are arranged on a radius on the mounting element (20).
9. Verfahren zur Befestigung einer Lagervorrichtung (10) nach einem der vorhergehenden Ansprüche an einer elektrischen Maschine (30), dadurch gekennzeichnet, dass ein Haltefederring (13) mit in ein Montagenest an der elektrischen Maschine (30) gelegt wird, ein Lagerelement (11) in eine zentrale Öffnung (18) des Haltefederrings (13) eingelegt wird, und ein Montageelement (20) mit seiner Aufnahme (21) über das Lagerelement (11) gelegt wird und das Montageelement (20) axial um eine vorgegebene Strecke auf die elektri- sehe Maschine (30) geschoben wird, die ausreicht, um ein Verrasten zwischen Haltefederring (13) und einem oder mehreren Rastmitteln (23) des Montageelements (20) zu bewirken.9. A method for fixing a bearing device (10) according to one of the preceding claims on an electric machine (30), characterized in that a retaining spring ring (13) is placed in a mounting test on the electric machine (30), a bearing element (11 ) is inserted into a central opening (18) of the retaining spring ring (13), and a mounting member (20) with its receptacle (21) over the bearing element (11) is placed and the mounting member (20) axially by a predetermined distance on the elec - See machine (30) is pushed, which is sufficient to cause a locking between the retaining spring ring (13) and one or more locking means (23) of the mounting member (20).
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass die zurückge- legte Strecke des Montageelements (20) oder eine Endposition eines Verschiebemittels, welches die Verschiebung des Montageelements (20) um die Strecke bewirkt, überwacht wird.10. The method according to claim 9, characterized in that the zurückge laid distance of the mounting member (20) or an end position of a displacement means, which causes the displacement of the mounting member (20) by the distance, is monitored.
11. Elektrische Maschine mit einer Lagervorrichtung (10), in der ein Lagerele- ment (11) mit einem Haltefederring (13) gehalten ist, welcher mit einem11. Electrical machine with a bearing device (10), in which a Lagerele- element (11) is held with a retaining spring ring (13), which with a
Montageelement (20) befestigt ist, dadurch gekennzeichnet, dass das Montageelement (20) mit dem Haltefederring (13) so verrastbar ist, dass das Lagerelement (11) zwischen Montageelement (20) und Haltefederring (13) stabil gehalten ist. Mounting element (20) is fastened, characterized in that the mounting element (20) with the retaining spring ring (13) is latched so that the bearing element (11) between the mounting member (20) and retaining spring ring (13) is held stable.
PCT/EP2006/063440 2005-07-01 2006-06-22 Bearing device, method for fixing a bearing device and electric machine provided therewith WO2007003512A1 (en)

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DE102005030871.6 2005-07-01
DE102005030871A DE102005030871A1 (en) 2005-07-01 2005-07-01 Bearing device, method for mounting a bearing device and electric machine with a bearing device

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DE102007039238A1 (en) * 2007-08-20 2009-02-26 Robert Bosch Gmbh Mounting arrangement for a joint bearing
DE102011075653B4 (en) * 2010-05-25 2020-06-18 Seg Automotive Germany Gmbh Starter motor in a starter for an internal combustion engine
DE102015210908A1 (en) * 2015-06-15 2016-12-15 Bühler Motor GmbH Electric motor driven liquid pump

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DE1613179A1 (en) * 1967-07-12 1970-07-30 Kurt Kraus Electric motor, especially small motor
FR2588628A1 (en) * 1985-10-14 1987-04-17 Marchal Equip Auto Cap intended for retaining the ball of an electric motor bearing, bearing and electric motor equipped with such a cap
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KR20080035526A (en) 2008-04-23
CN101213725A (en) 2008-07-02

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