EP2064801A1 - Electric motor, in particular for the windscreen wiper drive of a motor vehicle, with improved seating for the armature shaft bearing - Google Patents
Electric motor, in particular for the windscreen wiper drive of a motor vehicle, with improved seating for the armature shaft bearingInfo
- Publication number
- EP2064801A1 EP2064801A1 EP07787416A EP07787416A EP2064801A1 EP 2064801 A1 EP2064801 A1 EP 2064801A1 EP 07787416 A EP07787416 A EP 07787416A EP 07787416 A EP07787416 A EP 07787416A EP 2064801 A1 EP2064801 A1 EP 2064801A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing
- electric motor
- shell
- housing
- armature shaft
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
-
- 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
-
- 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
- H02K5/173—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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/09—Windscreen wipers, e.g. pivots therefore
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
- F16C2380/27—Motor coupled with a gear, e.g. worm gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/081—Structural association with bearings specially adapted for worm gear drives
Definitions
- the present invention relates to an electric motor, in particular for a windshield wiper drive of a motor vehicle according to the preamble of claim 1.
- Electric motors of the above type usually drive via a screw to a transmission device, which are used, for example, to operate a windshield wiper system, a power window system, a seat adjustment or the like.
- an electric motor for a windshield wiper drive of a motor vehicle is known.
- This includes a bearing, which is used in a hard to reach bearing seat.
- the bearing is axially fixed by means of a locking element in the bearing seat.
- This makes it possible to use the patch on the armature shaft bearing with the anchor in the bearing seat.
- the design of the electric motor and the associated gear housing is designed in several parts, so that the electric motor comprises a pole housing, which is flanged to the gear housing.
- the bearing seat is formed from the gear housing, wherein the heavy accessibility of the bearing seat is caused by the cup-shaped shape within the closed gear housing.
- the armature and the motor housing formed by the pole housing must be introduced by means of a complex joining process in the gear housing, wherein in addition to the connection of the motor housing with the gear housing by means of screws or the like initially only the locking element for a positive connection.
- the assembly is therefore difficult, disassembly is hardly possible and only with increased effort.
- the published patent application 197 27 120 A1 discloses an electric motor for a windshield wiper drive of a motor vehicle with an electric motor, which has an in Has substantially cup-shaped pole housing in which an anchor is arranged. At the pole housing, a transmission housing is attached, which serves to receive transmission elements. An armature shaft extends from the pole housing to the transmission housing and is mounted on the one hand in the pole housing and on the other hand in the transmission housing. An assembly of the individual components is also extremely expensive, since first the armature must be inserted into the pole housing, to then introduce the storage side of the gear housing. For this purpose, a headband is provided, which axially fixes the rolling bearing in the transmission housing. The rolling bearing is pressed into the bearing seat within the gear housing and enclosed by the gear housing on the full circumference. Disassembly of the bearing requires the release of the interference fit, which is often accompanied by a considerable disassembly effort.
- the invention includes the technical teaching that the bearing seat is formed of a first half-shell and a second half-shell, which are arranged opposite one another with their shell inner sides to form a closed radially symmetrical bearing seat.
- the invention is based on the idea to use two shells to form a bearing seat, which form a radially symmetrical bearing seat in an opposing arrangement.
- the armature can be used in a simple manner with the mounted on the bearing shaft bearings in the first half-shell, with a simple insertion of the second half-shell to form the radially symmetrical bearing seat is possible.
- the half shells form in the assembled arrangement a passage for the armature shaft which is larger than the armature shaft itself.
- a sealing element such as a felt ring or a lip seal for sealing against contamination and the like may be previously attached to the armature shaft to be held and received by the half-shells during operation.
- the half-shells each have a circular portion of the bearing seat of 180 °, so that an insertion of the rolling bearing in the first and second
- Half shell can be done without a Krafter Vogelis.
- the electric motor is arranged on a transmission housing, wherein the first half-shell is formed from a body portion of the transmission housing.
- the gear housing is thus integrally formed and the same material with the first half-shell, so that it only passes from the transmission housing and is arranged in the form of a body portion of this.
- the gear housing can be manufactured by means of an injection molding process, so that the geometric configuration of the first half-shell can be easily made possible as a one-piece molding on the transmission housing.
- Half shell a mechanical connection of the electric motor to the transmission housing.
- a corresponding transmission means may be arranged, which drives a worm wheel, for example, via a worm arranged on the armature shaft of the electric motor.
- the inclusion of the bearing can be a mechanical
- the half-shells comprise a front and a rear shoulder in order to support the armature shaft axially via the roller bearing in the bearing seat.
- the rolling bearing offers the possibility of absorbing axial forces in addition to the radial guidance, so that possible starting mushrooms, starting springs or other arrangements for absorbing axial forces within the armature shaft bearing can be dispensed with.
- the shoulders of the half-shells can thereby encompass at least the bearing outer ring, whereby the bearing inner ring can at least adjacent to the shoulders of the half-shells perform a rotation. It should be noted that the bearing inner ring rotates only within the shoulders, without touching them or entering into a non-positive connection with the shoulders.
- the shoulders form a passage of the armature shaft, which is for example slightly larger than the armature shaft itself.
- the rolling bearing may, for example, be designed as an open rolling bearing in order to obtain possible grease reserves in or in the vicinity of the bearing.
- Bearing inner ring, the rolling elements and the bearing outer ring transferred to the half shells. Due to the division of the half-shells an axial securing of the bearing outer ring can be made possible without great technical effort and without the addition of retaining rings such as a snap ring.
- the electric motor comprises a pot-shaped or tubular pole housing which encloses the first and the second half-shell at least in sections over the outer circumference thereof.
- the pole housing forms the housing of the electric motor and conventionally consists of a soft iron shell. It may have a tubular portion into which the half shells brought together can be inserted.
- the covering of the half-shells by the pole housing can be done either in sections.
- the half shells are complete, i. used over its entire width in the pole housing.
- the pole housing can be rolled in the grooves, to connect the half-shells form-fitting with the pole housing.
- the half-shells can be fixed by rolling in the pole housing, wherein the material of the pole housing at least partially presses into the grooves of the half-shells. This creates a positive fit
- the Anroll ist can take place either over the outer circumference of the pole housing, wherein a bending or crimping of the pole tube in the end region is possible, so that the formed flanged edge enclosing the half-shells and thus within the pole housing guaranteed.
- the attachment of a stop within the pole housing may limit an insertion of the half-shells in the pole housing, so that the crimping edge clamps the half-shells against the stop.
- a screwing of the half shells in the pole housing for example, by at least one radially supplied screw securing the half shells within the pole housing is also possible, with the use of such connecting means disassembly is simplified.
- Plastic material produced By means of such a selection of materials, a simple injection molding production of the components is possible. It is also possible to use the flexibility or the elastic behavior of a plastic material to the effect that the rolling bearing within the half shells by a simple way to install without play. But the one attached to each other by the opposite one another
- Half shell formed bearing seat has a diameter which is chosen slightly smaller than the bearing outer ring of the rolling bearing, so that a press-fitting fit can be created.
- the half-shells can thus be clamped to the rolling bearing and connected in the pole housing.
- the overall arrangement of bearings, the first and second half-shell and the pole housing can be formed without play, the resilience of the plastic material of the half-shells allows the application of a defined bearing preload.
- the plastic material may, for example, from the group of polycarbonates, polystyrenes, acrylonitrile-butadiene styrenes, the
- a further advantageous embodiment of the invention provides that the rolling bearing is designed in the manner of a ball bearing, by means of which in addition to radial forces and axial forces are alshehmbar.
- ordinary deep groove ball bearings are applicable, with other types of bearings, such as a shoulder ball bearing, represents a possible embodiment.
- the inclusion of axial forces should advantageously allow the bearing to transfer the axial force introduced by the worm gear in the armature shaft into the arrangement of the half shells and the pole housing.
- the armature shaft is mounted on at least one further side facing away from the transmission housing by means of a sliding bearing.
- the plain bearing is accommodated in a circular disc-shaped bearing plate, which is at least partially enclosed by the outer circumference of the pole housing and is positively connected by means of a groove with the pole housing.
- the bearing plate can be at the same
- the end shield can be closed advantageously to prevent ingress of contaminants. Furthermore, a space for filling with bearing grease can be provided. Due to the simple arrangement of the bearing plate this can be made in one piece, wherein the positive attachment of the bearing plate can be carried out within the hollow tube in the same way as the arrangement of the first and second half-shell.
- the plain bearing is used only for
- the figure is a schematic cross-sectional view of an electric motor for a windshield wiper drive with a bearing assembly according to the present invention.
- the electric motor 1 shown in the figure consists of an armature shaft 10, which is rotatably supported by a roller bearing 11 and a sliding bearing 21 within a pole housing 19.
- the rolling bearing 11 is in addition to the rolling elements of a bearing inner ring 12 and a bearing outer ring 13.
- the bearing inner ring 12 is pressed onto the armature shaft 10 or secured axially by means of securing elements.
- Bearing outer ring 13 is located in a bearing seat, wherein the bearing seat itself is formed by a first half-shell 14 and a second half-shell 15.
- the half shells 14 and 15 extend at an angle of 180 ° around the bearing outer ring 13 around.
- a radially symmetrical bearing seat is formed, wherein the half-shells 14 and 15 enclose the rolling bearing 11 on the full circumference.
- the first half shell 14 is formed from a body portion of a gear housing 16, the gear housing 16 is thus made of the same material, i. in one piece in the first half-shell 14 via.
- the first half-shell 14 forms a mechanical coupling of the electric motor 1 to the
- Transmission housing 16 of the windshield wiper drive is
- the rolling bearing 11 is designed as a ball bearing, which can accommodate both radial forces and axial forces. Via a screw 23, an axial force is introduced into the armature shaft 10, so that it is transferred via the bearing inner ring 12, the rolling elements and the bearing outer ring 13 in the first and second half-shell 14 and 15.
- the bearing shells 14 and 15 are inserted in a pole housing 19, and caulked axially by means of a Anroll réelle in this.
- Half shell 15 each have a closed circumferential groove on the respective outer side.
- the rolling takes place in each case via the groove 20, so that the material of the pole housing 19 is at least partially pressed into the grooves 20.
- the pole housing 19 is provided with a flanged edge 24, which also form an axial securing of the first and second half-shell 14 and 15 within the pole housing 19.
- bearing outer ring 13 For the transfer of the axial forces from the bearing outer ring 13 in the first and second half-shell 14 and 15, these have a front shoulder 17 and a rear shoulder 18, which extend in the radial direction at least over the bearing outer ring 13.
- the bearing outer ring 13 is thus between the front shoulder 17 and the rear shoulder 18 axially held, so that it is axially fixed in both directions.
- the front shoulder 17 and rear shoulder 18 are made in diameter such that they extend radially to just before the armature shaft 10 to einhausen the rolling bearing 11.
- the gear side remote from the armature shaft is rotatably supported via a sliding bearing 21 which is disposed within a bearing plate 22.
- the bearing plate 22 also has on its outer side a groove 20 into which the material of the pole housing 19 is at least partially pressed by a Anroll réelle.
- the end plate 22 is fixed within the pole housing 19.
- the bearing plate 22 is formed as shown in the manner of a closed circular disc to close the sliding bearing 21 relative to the outside of the electric motor 1.
- the invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use.
- projections for receiving a device may be provided on the side of the rear shoulder, which include, for example, so-called coal shafts or other recordings of coal to the spring-loaded contact pressure to the collector of the anchor package.
- lip or felt seals can be provided within the front and rear shoulder of the first and second bearing shell, which provide a simple seal of the interior of the electric motor 1 from the environment.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention relates to an electric motor (1), in particular for the windscreen wiper drive of a motor vehicle, comprising an armature shaft (10), which is mounted by means of at least one anti-friction bearing (11). Said bearing has an inner bearing ring (12), joined to the armature shaft (10) and also an outer bearing ring (13), held in a bearing seat, the latter consisting of a first half-shell (14) and a second half-shell (15), which are fitted together with their interiors facing one another to form a closed radially symmetrical bearing seat. The invention thus provides an electric motor (1) for the windscreen wiper drive of a motor vehicle with a simple seating for the anti-friction bearing (11) of the armature shaft (10).
Description
ELEKTROMOTOR, INSBESONDERE FÜR KRAFTFAHRZEUGSCHEIBENWISCHER- ANTRIEB, MIT VERBESSERTER AUFNAHME DER ANKERWELLENLAGERUNGELECTRIC MOTOR, ESPECIALLY FOR MOTOR VEHICLE WIPER DRIVE, WITH IMPROVED ASSEMBLY OF ANCHOR WAVE BEARING
Die vorliegende Erfindung betrifft einen Elektromotor, insbesondere für einen Scheibenwischerantrieb eines Kraftfahrzeuges gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to an electric motor, in particular for a windshield wiper drive of a motor vehicle according to the preamble of claim 1.
Elektromotoren der oben genannten Art treiben meist über eine Schnecke eine Getriebevorrichtung an, welche beispielsweise zum Betrieb einer Scheibenwischeranlage, einer Fensterheberanlage, einer Sitzverstellung oder dergleichen Anwendung finden.Electric motors of the above type usually drive via a screw to a transmission device, which are used, for example, to operate a windshield wiper system, a power window system, a seat adjustment or the like.
Derartige Elektromotoren weisen verschiedene Lageranordnungen auf, welche zurSuch electric motors have different bearing arrangements, which for
Lagerung der Ankerwelle sowohl in radialer Richtung als auch in axialer Richtung dienen.Storage of the armature shaft serve both in the radial direction and in the axial direction.
Stand der TechnikState of the art
Aus der Offenlegungsschrift DE 199 26 171 Al ist ein Elektromotor für einen Scheibenwischerantrieb eines Kraftfahrzeugs bekannt. Dieser umfasst ein Lager, welches in einem schwer zugänglichen Lagersitz eingesetzt ist. Hierbei wird das Lager mittels eines Rastelementes im Lagersitz axial fixiert. Dadurch ist es möglich, das auf die Ankerwelle aufgesetzte Lager mit dem Anker in den Lagersitz einzusetzen. Die Ausgestaltung des Elektromotors sowie des dazugehörigen Getriebegehäuses ist mehrteilig ausgeführt, so dass der Elektromotor ein Polgehäuse umfasst, welches an das Getriebegehäuse angeflanscht ist. Der Lagersitz ist aus dem Getriebegehäuse gebildet, wobei die schwere Zugänglichkeit des Lagersitzes durch die topfförmige Gestalt innerhalb des geschlossenen Getriebegehäuses verursacht ist. Der Anker sowie das durch das Polgehäuse gebildete Motorgehäuse muss mittels eines aufwendigen Fügeverfahrens in das Getriebegehäuse eingebracht werden, wobei neben der Verbindung des Motorgehäuses mit dem Getriebegehäuse mittels Schrauben oder ähnlichem zunächst lediglich das Rastelement zur schlüssigen Verbindung dient. Die Montage fällt daher schwer, eine Demontage ist kaum und nur unter erhöhtem Aufwand möglich.From the published patent application DE 199 26 171 Al an electric motor for a windshield wiper drive of a motor vehicle is known. This includes a bearing, which is used in a hard to reach bearing seat. Here, the bearing is axially fixed by means of a locking element in the bearing seat. This makes it possible to use the patch on the armature shaft bearing with the anchor in the bearing seat. The design of the electric motor and the associated gear housing is designed in several parts, so that the electric motor comprises a pole housing, which is flanged to the gear housing. The bearing seat is formed from the gear housing, wherein the heavy accessibility of the bearing seat is caused by the cup-shaped shape within the closed gear housing. The armature and the motor housing formed by the pole housing must be introduced by means of a complex joining process in the gear housing, wherein in addition to the connection of the motor housing with the gear housing by means of screws or the like initially only the locking element for a positive connection. The assembly is therefore difficult, disassembly is hardly possible and only with increased effort.
Die Offenlegungsschrift 197 27 120 Al offenbart einen Elektromotor für einen Scheibenwischerantrieb eines Kraftfahrzeugs mit einem Elektromotor, welcher ein im
Wesentlichen topfförmiges Polgehäuse aufweist, in dem ein Anker angeordnet ist. An dem Polgehäuse ist ein Getriebegehäuse befestigt, welches zur Aufnahme von Getriebeelementen dient. Eine Ankerwelle erstreckt sich vom Polgehäuse zum Getriebegehäuse und ist einerseits im Polgehäuse und andererseits im Getriebegehäuse gelagert. Eine Montage der einzelnen Komponenten ist auch hier äußerst aufwendig, da zunächst der Anker in das Polgehäuse eingesetzt werden muss, um anschließend die Lagerung seitens des Getriebegehäuses einzuführen. Hierzu ist ein Haltebügel vorgesehen, welcher das Wälzlager im Getriebegehäuse axial fixiert. Das Wälzlager ist innerhalb des Getriebegehäuses in den Lagersitz eingepresst und von dem Getriebegehäuse auf dem vollen Umfang umschlossen. Eine Demontage des Wälzlagers erfordert das Lösen des Presssitzes, was häufig mit einem erheblichen Demontageaufwand einhergeht.The published patent application 197 27 120 A1 discloses an electric motor for a windshield wiper drive of a motor vehicle with an electric motor, which has an in Has substantially cup-shaped pole housing in which an anchor is arranged. At the pole housing, a transmission housing is attached, which serves to receive transmission elements. An armature shaft extends from the pole housing to the transmission housing and is mounted on the one hand in the pole housing and on the other hand in the transmission housing. An assembly of the individual components is also extremely expensive, since first the armature must be inserted into the pole housing, to then introduce the storage side of the gear housing. For this purpose, a headband is provided, which axially fixes the rolling bearing in the transmission housing. The rolling bearing is pressed into the bearing seat within the gear housing and enclosed by the gear housing on the full circumference. Disassembly of the bearing requires the release of the interference fit, which is often accompanied by a considerable disassembly effort.
Es ist daher die Aufgabe der vorliegenden Erfindung, einen Elektromotor für einen Scheibenwischerantrieb eines Kraftfahrzeugs zu schaffen, welcher eine einfacheIt is therefore the object of the present invention to provide an electric motor for a windshield wiper drive of a motor vehicle, which is a simple
Aufnahme der Wälzlagerung der Ankerwelle ermöglicht.Recording the rolling bearing of the armature shaft allows.
Die Aufgabe wird ausgehend von einem Elektromotor gemäß dem Oberbegriff des Anspruchs 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved on the basis of an electric motor according to the preamble of claim 1 in conjunction with its characterizing features. Advantageous developments of the invention are specified in the dependent claims.
Die Erfindung schließt die technische Lehre ein, dass der Lagersitz aus einer ersten Halbschale und einer zweiten Halbschale gebildet ist, welche zur Ausbildung eines geschlossenen radialsymmetrischen Lagersitzes mit ihren Schaleninnenseiten einander gegenüberliegend angeordnet sind.The invention includes the technical teaching that the bearing seat is formed of a first half-shell and a second half-shell, which are arranged opposite one another with their shell inner sides to form a closed radially symmetrical bearing seat.
Die Erfindung geht dabei von dem Gedanken aus, zur Ausbildung eines Lagersitzes zwei Halbschalen zu verwenden, welche in einer einander gegenüberliegenden Anordnung einen radialsymmetrischen Lagersitz bilden. Bei der Montage kann der Anker auf einfache Weise mit dem an der Lagerwelle befestigten Wälzlager in die erste Halbschale eingesetzt werden, wobei ein einfaches Einsetzen der zweiten Halbschale zur Bildung des radialsymmetrischen Lagersitzes möglich ist. Die Halbschalen bilden in der montierten Anordnung einen Durchgang für die Ankerwelle welcher größer ist, als die Ankerwelle selbst.
Je nach Erfordernis kann dabei ein Dichtelement wie ein Filzring oder eine Lippendichtung zur Abdichtung gegen Verunreinigungen und dergleichen vorher an der Ankerwelle angebracht werden, um im Betrieb von den Halbschalen gehalten und aufgenommen zu werden. Die Halbschalen weisen jeweils einen Kreisabschnitt des Lagersitzes von 180° auf, so dass ein Einsetzen des Wälzlagers in die erste und zweiteThe invention is based on the idea to use two shells to form a bearing seat, which form a radially symmetrical bearing seat in an opposing arrangement. During assembly, the armature can be used in a simple manner with the mounted on the bearing shaft bearings in the first half-shell, with a simple insertion of the second half-shell to form the radially symmetrical bearing seat is possible. The half shells form in the assembled arrangement a passage for the armature shaft which is larger than the armature shaft itself. Depending on requirements, a sealing element such as a felt ring or a lip seal for sealing against contamination and the like may be previously attached to the armature shaft to be held and received by the half-shells during operation. The half-shells each have a circular portion of the bearing seat of 180 °, so that an insertion of the rolling bearing in the first and second
Halbschale ohne ein Krafterfordernis erfolgen kann.Half shell can be done without a Krafterfordernis.
Vorteilhafterweise ist der Elektromotor an einem Getriebegehäuse angeordnet, wobei die erste Halbschale aus einem Körperabschnitt des Getriebegehäuses gebildet ist. Das Getriebegehäuse ist damit einstückig und materialeinheitlich mit der ersten Halbschale ausgebildet, so dass diese lediglich aus dem Getriebegehäuse übergeht und in Form eines Körperabschnittes an diesem angeordnet ist. Das Getriebegehäuse kann mittels eines Spritzgussverfahrens hergestellt werden, so dass die geometrische Ausgestaltung der ersten Halbschale als einstückige Anformung an das Getriebegehäuse problemlos ermöglicht werden kann. Damit bildet der Übergang des Getriebegehäuses in die ersteAdvantageously, the electric motor is arranged on a transmission housing, wherein the first half-shell is formed from a body portion of the transmission housing. The gear housing is thus integrally formed and the same material with the first half-shell, so that it only passes from the transmission housing and is arranged in the form of a body portion of this. The gear housing can be manufactured by means of an injection molding process, so that the geometric configuration of the first half-shell can be easily made possible as a one-piece molding on the transmission housing. Thus, the transition of the transmission housing into the first forms
Halbschale eine mechanische Verbindung des Elektromotors mit dem Getriebegehäuse.Half shell a mechanical connection of the electric motor to the transmission housing.
Im Getriebegehäuse kann ein entsprechendes Getriebemittel angeordnet sein, welches beispielsweise über eine auf der Ankerwelle des Elektromotors angeordnete Schnecke ein Schneckenrad antreibt. Somit kann die Aufnahme des Wälzlagers eine mechanischeIn the transmission housing, a corresponding transmission means may be arranged, which drives a worm wheel, for example, via a worm arranged on the armature shaft of the electric motor. Thus, the inclusion of the bearing can be a mechanical
Schnittstelle zwischen dem Elektromotor und dem Getriebegehäuse bilden.Form interface between the electric motor and the transmission housing.
Gemäß eines weiteren Ausführungsbeispiels der Erfindung ist vorgesehen, dass die Halbschalen eine vordere und eine hintere Schulter umfassen, um die Ankerwelle axial über das Wälzlager im Lagersitz abzustützen. Das Wälzlager bietet die Möglichkeit, neben der radialen Führung Axialkräfte aufzunehmen, so dass mögliche Anlaufpilze, Anlauffedern oder sonstige Anordnungen zur Aufnahme von Axialkräften innerhalb der Ankerwellenlagerung entfallen können.According to a further embodiment of the invention it is provided that the half-shells comprise a front and a rear shoulder in order to support the armature shaft axially via the roller bearing in the bearing seat. The rolling bearing offers the possibility of absorbing axial forces in addition to the radial guidance, so that possible starting mushrooms, starting springs or other arrangements for absorbing axial forces within the armature shaft bearing can be dispensed with.
Die Schultern der Halbschalen könne dabei zumindest den Lageraußenring umgreifen, wobei auch der Lagerinnenring zumindest benachbart zu den Schultern der Halbschalen eine Rotation ausführen kann. Dabei sei angemerkt, dass der Lagerinnenring lediglich innerhalb der Schultern rotiert, ohne diese zu berühren oder eine kraftschlüssige Verbindung mit den Schultern einzugehen. Die Schultern bilden einen Durchgang der Ankerwelle, welcher beispielsweise geringfügig größer ist als die Ankerwelle selbst.
- A -The shoulders of the half-shells can thereby encompass at least the bearing outer ring, whereby the bearing inner ring can at least adjacent to the shoulders of the half-shells perform a rotation. It should be noted that the bearing inner ring rotates only within the shoulders, without touching them or entering into a non-positive connection with the shoulders. The shoulders form a passage of the armature shaft, which is for example slightly larger than the armature shaft itself. - A -
Somit ist es möglich, eine Fettschmierung des Wälzlagers vorzusehen. Das Wälzlager kann beispielsweise als offenes Wälzlager ausgeführt sein, um mögliche Fettvorräte in bzw. in der Nähe des Lagers zu erhalten.Thus, it is possible to provide a grease lubrication of the rolling bearing. The rolling bearing may, for example, be designed as an open rolling bearing in order to obtain possible grease reserves in or in the vicinity of the bearing.
Wird eine Axialkraft in die Ankerwelle eingeleitet, so wird diese über denIf an axial force is introduced into the armature shaft, this is transmitted via the
Lagerinnenring, den Wälzkörper und den Lageraußenring in die Halbschalen überführt. Durch die Teilung der Halbschalen kann ohne großen technischen Aufwand und ohne die Hinzunahme von Sicherungsringen wie beispielsweise einem Sprengring eine axiale Sicherung des Lageraußenrings ermöglicht werden.Bearing inner ring, the rolling elements and the bearing outer ring transferred to the half shells. Due to the division of the half-shells an axial securing of the bearing outer ring can be made possible without great technical effort and without the addition of retaining rings such as a snap ring.
Gemäß eines weiteren Ausführungsbeispiels der Erfindung umfasst der Elektromotor ein topf- oder rohrförmiges Polgehäuse, welches die erste und die zweite Halbschale wenigstens Abschnittsweise über deren Außenumfang umschließt. Das Polgehäuse bildet das Gehäuse des Elektromotors und besteht herkömmlicher Weise aus einer Weicheisenhülle. Es kann einen rohrförmigen Abschnitt aufweisen, in welchen die aufeinandergebrachten Halbschalen eingeführt werden können. Die Überdeckung der Halbschalen durch das Polgehäuse kann entweder abschnittsweise erfolgen. Vorteilhafterweise sind die Halbschalen vollständig, d.h. über ihre gesamte Breite in das Polgehäuse eingesetzt.According to a further embodiment of the invention, the electric motor comprises a pot-shaped or tubular pole housing which encloses the first and the second half-shell at least in sections over the outer circumference thereof. The pole housing forms the housing of the electric motor and conventionally consists of a soft iron shell. It may have a tubular portion into which the half shells brought together can be inserted. The covering of the half-shells by the pole housing can be done either in sections. Advantageously, the half shells are complete, i. used over its entire width in the pole housing.
Über den Außenumfang können sich umfangsseitig umlaufende Nuten erstrecxken, wobei das Polgehäuse im Bereich der Nuten rolliert sein kann, um die Halbschalen formschlüssige mit dem Polgehäuse zu verbinden. Die Halbschalen können durch das Anrollieren im Polgehäuse fixiert werden, wobei sich das Material des Polgehäuses in die Nuten der Halbschalen zumindest teilweise eindrückt. Somit entsteht eine formschlüssigeOn the outer circumference circumferentially circumferential grooves can erstrecxken, wherein the pole housing can be rolled in the grooves, to connect the half-shells form-fitting with the pole housing. The half-shells can be fixed by rolling in the pole housing, wherein the material of the pole housing at least partially presses into the grooves of the half-shells. This creates a positive fit
Verbindung zwischen dem Polgehäuse und den Halbschalen.Connection between the pole housing and the half shells.
Ferner ist es möglich, alternativ zur Anrollierung des Polgehäuses die Halbschalen mit dem Polgehäuse zu verstemmen, indem auf dem Umfang verteilte plastische Formänderungen des Polgehäuses derart vorgenommen werden, dass ebenfalls eine formschlüssige Verbindung mit den Halbschalen erfolgen kann.Furthermore, it is possible, alternatively to the Anrollierung of the pole housing to caulk the half-shells with the pole housing by distributed on the circumference plastic deformations of the pole housing are made such that also a positive connection can be made with the half shells.
Die Anrollierung kann entweder über den Außenumfang des Polgehäuses erfolgen, wobei auch ein Umbiegen bzw. ein Bördeln des Polrohres im Endbereich möglich ist, sodass die gebildete Bördelkante die Halbschalen umschließt und somit innerhalb des Polgehäuses
sichert. Auch die Anbringung eines Anschlages innerhalb des Polgehäuses kann eine Einführung der Halbschalen in das Polgehäuse begrenzen, so dass die Bördelkante die Halbschalen gegen den Anschlag verspannt. Im Falle einer Verschraubung der Halbschalen im Polgehäuse beispielsweise durch zumindest eine radial zugeführte Schraube ist eine Sicherung der Halbschalen innerhalb des Polgehäuses ebenfalls möglich, wobei bei Anwendung derartiger Verbindungsmittel eine Demontage vereinfacht ist.The Anrollierung can take place either over the outer circumference of the pole housing, wherein a bending or crimping of the pole tube in the end region is possible, so that the formed flanged edge enclosing the half-shells and thus within the pole housing guaranteed. The attachment of a stop within the pole housing may limit an insertion of the half-shells in the pole housing, so that the crimping edge clamps the half-shells against the stop. In the case of a screwing of the half shells in the pole housing, for example, by at least one radially supplied screw securing the half shells within the pole housing is also possible, with the use of such connecting means disassembly is simplified.
Gemäß eines weiteren vorteilhaften Ausführungsbeispiels der Erfindung sind die erste Halbschale bzw. das Getriebegehäuse und/oder die zweite Halbschale aus einemAccording to a further advantageous embodiment of the invention, the first half-shell or the gear housing and / or the second half-shell of a
Kunststoffmaterial hergestellt. Mittels einer derartigen Materialauswahl ist eine einfache spritzgusstechnische Herstellung der Bauteile möglich. Ferner besteht die Möglichkeit, die Nachgiebigkeit bzw. das Elastizitätsverhalten eins Kunststoffmaterials dahingehend zu nutzen, das Wälzlager innerhalb der Halbschalen durch einfache Weise spielfrei anzubringen. Dafür hat der durch die einander gegenüberliegend aneinander befestigtenPlastic material produced. By means of such a selection of materials, a simple injection molding production of the components is possible. It is also possible to use the flexibility or the elastic behavior of a plastic material to the effect that the rolling bearing within the half shells by a simple way to install without play. But the one attached to each other by the opposite one another
Halbschalen gebildete Lagersitz einen Durchmesser, der geringfügig kleiner gewählt ist als der Lageraußenring des Wälzlagers, sodass ein Presspassungssitz geschaffen werden kann. Die Halbschalen können so mit dem Wälzlager verspannt und im Polgehäuse verbunden werden.Half shell formed bearing seat has a diameter which is chosen slightly smaller than the bearing outer ring of the rolling bearing, so that a press-fitting fit can be created. The half-shells can thus be clamped to the rolling bearing and connected in the pole housing.
Die Gesamtanordnung aus Wälzlager, der ersten und der zweiten Halbschale sowie dem Polgehäuse kann so spielfrei gebildet werden, wobei die Nachgiebigkeit des Kunststoffmaterials der Halbschalen die Aufbringung einer definierten Lagervorspannung ermöglicht. Das Kunststoffmaterial kann beispielsweise aus der Gruppe der Polykarbonate, der Polystyrole, der Acrylnitril-Butadien-Styrole, derThe overall arrangement of bearings, the first and second half-shell and the pole housing can be formed without play, the resilience of the plastic material of the half-shells allows the application of a defined bearing preload. The plastic material may, for example, from the group of polycarbonates, polystyrenes, acrylonitrile-butadiene styrenes, the
Polymethylmetacrylate oder aus einer ähnlichen Gruppe ausgeführt sein.Polymethylmethacrylates or be carried out from a similar group.
Ein weiteres vorteilhaftes Ausführungsbeispiel der Erfindung sieht vor, dass das Wälzlager nach Art eines Kugellagers ausgebildet ist, mittels dessen neben Radialkräften auch Axialkräfte aufhehmbar sind. Dabei sind gewöhnliche Rillenkugellager anwendbar, wobei auch andere Lagerbauarten, wie beispielsweise ein Schulterkugellager, eine mögliche Ausführungsform darstellt. Die Aufnahme von Axialkräften sollte das Lager vorteilhaferweise ermöglichen, um die durch den Schneckentrieb eingebrachte Axialkraft in der Ankerwelle in die Anordnung der Halbschalen und des Polgehäuses überzuleiten.
Vorteilhafterweise ist die Ankerwelle an wenigstens einer weiteren dem Getriebegehäuse abgewandeten Seite mittels eines Gleitlagers gelagert. Das Gleitlager ist dabei in einem kreisscheibenförmigen Lagerschild aufgenommen, welches über dessen Außenumfang wenigstens abschnittsweise durch das Polgehäuse umschlossen und mittels einer Nut formschlüssig mit dem Polgehäuse verbunden ist. Das Lagerschild kann auf gleicheA further advantageous embodiment of the invention provides that the rolling bearing is designed in the manner of a ball bearing, by means of which in addition to radial forces and axial forces are aufhehmbar. In this case, ordinary deep groove ball bearings are applicable, with other types of bearings, such as a shoulder ball bearing, represents a possible embodiment. The inclusion of axial forces should advantageously allow the bearing to transfer the axial force introduced by the worm gear in the armature shaft into the arrangement of the half shells and the pole housing. Advantageously, the armature shaft is mounted on at least one further side facing away from the transmission housing by means of a sliding bearing. The plain bearing is accommodated in a circular disc-shaped bearing plate, which is at least partially enclosed by the outer circumference of the pole housing and is positively connected by means of a groove with the pole housing. The bearing plate can be at the same
Weise innerhalb des Polgehäuses befestigt werden, wie die erste und zweite Halbschale. Dieses nimmt das Gleitlager innerhalb einer Bohrung auf, wobei das Gleitlager beispielsweise in das Lagerschild eingepresst sein kann.Way be secured inside the pole housing, as the first and second half-shell. This takes up the plain bearing within a bore, wherein the plain bearing can be pressed for example in the bearing plate.
Endseitig kann das Lagerschild vorteilhafterweise verschlossen sein, um ein Eindringen von Verunreinigungen zu verhindern. Weiterhin kann ein Raum zur Befüllung mit Lagerfett vorgesehen werden. Aufgrund der einfachen Anordnung des Lagerschildes kann dieses einteilig ausgeführt sein, wobei die formschlüssige Befestigung des Lagerschildes innerhalb des Hohlrohres auf gleiche Weise erfolgen kann wie die Anordnung der ersten und zweiten Halbschale. Das Gleitlager dient lediglich zurThe end shield can be closed advantageously to prevent ingress of contaminants. Furthermore, a space for filling with bearing grease can be provided. Due to the simple arrangement of the bearing plate this can be made in one piece, wherein the positive attachment of the bearing plate can be carried out within the hollow tube in the same way as the arrangement of the first and second half-shell. The plain bearing is used only for
Aufnahme von Radialkräften, und kann hinsichtlich der gesamten Lageranordnung als Loslager betrachtet werden.Recording of radial forces, and can be considered as a floating bearing with respect to the entire bearing assembly.
Ferner besteht die Möglichkeit, die Ankerwelle auch seitens der Schnecke zu lagern, wobei die Lagerung innerhalb des Getriebegehäuses eingebracht wird. Somit besteht dieIt is also possible to store the armature shaft on the part of the worm, wherein the bearing is introduced within the gear housing. Thus, there is the
Möglichkeit, die Welle auch mit drei Lagerungen zu lagern, von denen lediglich eine Lagerung als Festlager ausgeführt sein muss, welches durch das Wälzlager gebildet ist.Possibility to store the shaft with three bearings, of which only a bearing must be designed as a fixed bearing, which is formed by the rolling bearing.
Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der einzigen Figur näher dargestellt.Further, measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to the single figure.
Ausführungsbeispielembodiment
Es zeigt:It shows:
Die Figur eine schematische Querschnittsdarstellung eines Elektromotors für einen Scheibenwischerantrieb mit einer Lageranordnung gemäß der vorliegenden Erfindung.
Der in der Figur dargestellte Elektromotor 1 besteht aus einer Ankerwelle 10, welche mittels eines Wälzlagers 11 sowie eines Gleitlagers 21 innerhalb eines Polgehäuses 19 drehbar gelagert ist. Das Wälzlager 11 besteht neben den Wälzkörpern aus einem Lagerinnenring 12 und einem Lageraußenring 13. Der Lagerinnenring 12 ist auf die Ankerwelle 10 aufgepresst oder mittels Sicherungselementen axial gesichert. DerThe figure is a schematic cross-sectional view of an electric motor for a windshield wiper drive with a bearing assembly according to the present invention. The electric motor 1 shown in the figure consists of an armature shaft 10, which is rotatably supported by a roller bearing 11 and a sliding bearing 21 within a pole housing 19. The rolling bearing 11 is in addition to the rolling elements of a bearing inner ring 12 and a bearing outer ring 13. The bearing inner ring 12 is pressed onto the armature shaft 10 or secured axially by means of securing elements. Of the
Lageraußenring 13 befindet sich in einem Lagersitz, wobei der Lagersitz selbst durch eine erste Halbschale 14 und eine zweite Halbschale 15 gebildet ist.Bearing outer ring 13 is located in a bearing seat, wherein the bearing seat itself is formed by a first half-shell 14 and a second half-shell 15.
Die Halbschalen 14 und 15 erstrecken sich mit einem Winkel von jeweils 180° um den Lageraußenring 13 herum. Durch die erste Halbschale 14 und die zweite Halbschale 15 entsteht ein radialsymmetrischer Lagersitz, wobei die Halbschalen 14 und 15 das Wälzlager 11 auf dem vollen Umfang umschließen. Die erste Halbschale 14 ist aus einem Körperabschnitt eines Getriebegehäuses 16 gebildet, das Getriebegehäuse 16 geht somit materialeinheitlich, d.h. einstückig in die erste Halbschale 14 über. Damit bildet die erste Halbschale 14 eine mechanische Ankopplung des Elektromotors 1 an dasThe half shells 14 and 15 extend at an angle of 180 ° around the bearing outer ring 13 around. By the first half-shell 14 and the second half-shell 15, a radially symmetrical bearing seat is formed, wherein the half-shells 14 and 15 enclose the rolling bearing 11 on the full circumference. The first half shell 14 is formed from a body portion of a gear housing 16, the gear housing 16 is thus made of the same material, i. in one piece in the first half-shell 14 via. Thus, the first half-shell 14 forms a mechanical coupling of the electric motor 1 to the
Getriebegehäuse 16 des Scheibenwischerantriebs.Transmission housing 16 of the windshield wiper drive.
Das Wälzlager 11 ist als Kugellager ausgebildet, welches sowohl Radialkräfte als auch Axialkräfte aufnehmen kann. Über eine Schnecke 23 wird eine Axialkraft in die Ankerwelle 10 eingeleitet, sodass diese über den Lagerinnenring 12, die Wälzkörper und den Lageraußenring 13 in die erste und zweite Halbschale 14 und 15 übergeleitet wird. Die Lagerschalen 14 und 15 sind in einem Polgehäuse 19 eingebracht, und mittels einer Anrollierung in diesem axialfest verstemmt.The rolling bearing 11 is designed as a ball bearing, which can accommodate both radial forces and axial forces. Via a screw 23, an axial force is introduced into the armature shaft 10, so that it is transferred via the bearing inner ring 12, the rolling elements and the bearing outer ring 13 in the first and second half-shell 14 and 15. The bearing shells 14 and 15 are inserted in a pole housing 19, and caulked axially by means of a Anrollierung in this.
Die Anrollierung erfolgt über Nuten 20, wobei die erste Halbschale 14 und die zweiteThe Anrollierung via grooves 20, wherein the first half-shell 14 and the second
Halbschale 15 jeweils eine geschlossen umlaufende Nut auf der jeweiligen Außenseite aufweisen. Die Rollierung erfolgt jeweils über der Nut 20, so dass das Material des Polgehäuses 19 zumindest teilweise in die Nuten 20 eingedrückt wird. Ferner ist das Polgehäuse 19 mit einer Bördelkante 24 versehen, welche ebenfalls eine axiale Sicherung der ersten und zweiten Halbschale 14 und 15 innerhalb des Polgehäuses 19 bilden.Half shell 15 each have a closed circumferential groove on the respective outer side. The rolling takes place in each case via the groove 20, so that the material of the pole housing 19 is at least partially pressed into the grooves 20. Furthermore, the pole housing 19 is provided with a flanged edge 24, which also form an axial securing of the first and second half-shell 14 and 15 within the pole housing 19.
Zur Überleitung der Axialkräfte vom Lageraußenring 13 in die erste und zweite Halbschale 14 und 15 weisen diese eine vordere Schulter 17 sowie eine hintere Schulter 18 auf, welche sich in radialer Richtung zumindest über den Lageraußenring 13 erstrecken. Der Lageraußenring 13 ist somit zwischen der vorderen Schulter 17 und der
hinteren Schulter 18 axialfest aufgenommen, so dass dieser in beiden Richtung axial fixiert ist.For the transfer of the axial forces from the bearing outer ring 13 in the first and second half-shell 14 and 15, these have a front shoulder 17 and a rear shoulder 18, which extend in the radial direction at least over the bearing outer ring 13. The bearing outer ring 13 is thus between the front shoulder 17 and the rear shoulder 18 axially held, so that it is axially fixed in both directions.
Gemäß der Darstellung in der Figur sind die vordere Schulter 17 und hintere Schulter 18 im Durchmesser derart ausgeführt, dass sich diese radial bis kurz vor die Ankerwelle 10 erstrecken, um das Wälzlager 11 einzuhausen. Die getriebeabgewandte Seite der Ankerwelle ist über ein Gleitlager 21 drehbar gelagert, welches innerhalb eines Lagerschildes 22 angeordnet ist. Das Lagerschild 22 weist auf seiner Außenseite ebenfalls eine Nut 20 auf, in welche das Material des Polgehäuses 19 durch eine Anrollierung zumindest teilweise eingedrückt ist. Somit ist das Lagerschild 22 innerhalb des Polgehäuses 19 fixiert. Das Lagerschild 22 ist gemäß der Darstellung nach Art einer geschlossenen Kreisscheibe ausgebildet, um das Gleitlager 21 gegenüber der Außenseite des Elektromotors 1 zu verschließen.As shown in the figure, the front shoulder 17 and rear shoulder 18 are made in diameter such that they extend radially to just before the armature shaft 10 to einhausen the rolling bearing 11. The gear side remote from the armature shaft is rotatably supported via a sliding bearing 21 which is disposed within a bearing plate 22. The bearing plate 22 also has on its outer side a groove 20 into which the material of the pole housing 19 is at least partially pressed by a Anrollierung. Thus, the end plate 22 is fixed within the pole housing 19. The bearing plate 22 is formed as shown in the manner of a closed circular disc to close the sliding bearing 21 relative to the outside of the electric motor 1.
Die Erfindung beschränkt sich in ihrer Ausführung nicht auf das vorstehend angegebene bevorzugte Ausführungsbeispiel. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei grundsätzlich anders gearteten Ausführungen Gebrauch macht. Beispielsweise besteht die Möglichkeit, an der ersten Halbschale sowie der zweiten Halbschale eine jeweilige Aufnahme der Schleifkohlen vorzusehen, welche mit dem Kollektor des Ankerpaketes des Elektromotors zusammenwirken. Dabei können an der Seite der hinteren Schulter Anformungen zur Aufnahme einer Vorrichtung vorgesehen sein, welche beispielweise sogenannte Kohleschächte oder sonstige Aufnahmen von Kohlen zur federbelasteten Anpressung an den Kollektor des Ankerpaketes umfassen. Ferner können in der Figur nicht dargestellte Ring-, Lippen- oder Filzdichtungen innerhalb der vorderen und hinteren Schulter der ersten und zweiten Lagerschale vorgesehen sein, welche eine einfache Abdichtung des Innenraums des Elektromotors 1 gegenüber der Umgebung bieten.
The invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. For example, it is possible to provide on the first half-shell as well as the second half-shell a respective receptacle of the carbon brushes, which cooperate with the collector of the armature assembly of the electric motor. In this case, projections for receiving a device may be provided on the side of the rear shoulder, which include, for example, so-called coal shafts or other recordings of coal to the spring-loaded contact pressure to the collector of the anchor package. Further, not shown in the figure ring, lip or felt seals can be provided within the front and rear shoulder of the first and second bearing shell, which provide a simple seal of the interior of the electric motor 1 from the environment.
Claims
1. Elektromotor (1), insbesondere für einen Scheibenwischerantrieb eines1. electric motor (1), in particular for a windshield wiper drive a
Kraftfahrzeugs mit einer Ankerwelle (10), welche mittels wenigstens eines Wälzlagers (11) gelagert ist, welches einen Lagerinnenring (12) aufweist, der an der Ankerwelle (10) angeordnet ist, und einen Lageraußenring (13), der in einem Lagersitz aufgenommen ist, dadurch gekennzeichnet, dass der Lagersitz aus einer ersten Halbschale (14) und einer zweiten Halbschale (15) gebildet ist, welche zur Ausbildung eines geschlossenen radialsymmetrischen Lagersitzes mit ihren Schaleninnenseiten einander gegenüberliegend miteinander verbunden sind.Motor vehicle with an armature shaft (10) which is mounted by means of at least one rolling bearing (11) having a bearing inner ring (12) which is arranged on the armature shaft (10), and a bearing outer ring (13) which is accommodated in a bearing seat , characterized in that the bearing seat of a first half-shell (14) and a second half-shell (15) is formed, which are connected to form a closed radially symmetrical bearing seat with their shell inner sides opposite each other.
2. Elektromotor (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Elektromotor (1) an einem Getriebegehäuse (16) angeordnet ist, und die erste Halbschale (14) aus einem Körperabschnitt des Getriebegehäuses (16) gebildet ist.2. Electric motor (1) according to claim 1, characterized in that the electric motor (1) on a transmission housing (16) is arranged, and the first half-shell (14) of a body portion of the transmission housing (16) is formed.
3. Elektromotor (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Halbschalen (14, 15) eine vordere und eine hintere3. Electric motor (1) according to claim 1 or 2, characterized in that the half-shells (14, 15) have a front and a rear
Schulter (17, 18) umfassen, um die Ankerwelle (10) axial über das Wälzlager (11) im Lagersitz abzustützen.Shoulder (17, 18) to support the armature shaft (10) axially via the rolling bearing (11) in the bearing seat.
4. Elektromotor (1) nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass der Elektromotor (1) ein topf- oder rohrförmiges4. Electric motor (1) according to one of the preceding claims, characterized in that the electric motor (1) is a pot-shaped or tubular
Polgehäuse (19) umfasst, welches die erste und die zweite Halbschale (14, 15) wenigstens abschnittsweise über deren Außenumfang umschließt.Pol housing (19) which encloses the first and the second half-shell (14, 15) at least in sections over the outer circumference.
5. Elektromotor (1) nach Anspruch 4, dadurch gekennzeichnet, dass die Halbschalen (14, 15) im Außenumfang wenigstens eine umlaufende Nut (20) aufweisen, wobei das Polgehäuse (19) im Bereich der Nut (20) anrolliert ist, um die Halbschalen (14, 15) formschlüssig mit dem Polgehäuse (19) zu verbinden.5. Electric motor (1) according to claim 4, characterized in that the half-shells (14, 15) in the outer circumference at least one circumferential groove (20), wherein the pole housing (19) in the region of the groove (20) is rolled to the Half shells (14, 15) form-fitting manner with the pole housing (19) to connect.
6. Elektromotor (1) nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass das Getriebegehäuse (16) und damit die erste Halbschale (14) und /oder die zweite Halbschale (15) aus einem Kunststoffmaterial hergestellt sind.6. Electric motor (1) according to one of the preceding claims, characterized in that the gear housing (16) and thus the first half-shell (14) and / or the second half-shell (15) are made of a plastic material.
7. Elektromotor (1) nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass der durch die aufeinandergebrachten Halbschalen (14, 15) gebildete Lagersitz einen Durchmesser hat, welcher geringfügig kleiner ist als der Lageraußenring (13) des Wälzlagers (11), um ein Presspassungssitz geschaffen ist.7. Electric motor (1) according to any one of the preceding claims, characterized in that by the successive half shells (14, 15) formed bearing seat has a diameter which is slightly smaller than the bearing outer ring (13) of the rolling bearing (11) to a Press fit is created.
8. Elektromotor (1) nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die Ankerwelle (10) an wenigstens einer weiteren dem Getriebegehäuse (16) abgewandten Seite mittels eines Gleitlagers (21) gelagert ist.8. Electric motor (1) according to one of the preceding claims, characterized in that the armature shaft (10) is mounted on at least one further the transmission housing (16) facing away by means of a sliding bearing (21).
9. Elektromotor (1) nach Anspruch 8, dadurch gekennzeichnet, dass das Gleitlager (21) in einem kreisscheibenförmigen9. Electric motor (1) according to claim 8, characterized in that the sliding bearing (21) in a circular disk-shaped
Lagerschild (22) aufgenommen ist, welches über dessen Außenumfang wenigstens abschnittsweise durch das Polgehäuse (19) umschlossen und mittels einer Nut (20) formschlüssig mit dem Polgehäuse (19) verbunden ist.Bearing plate (22) is accommodated, which is at least partially enclosed by the outer circumference of the pole housing (19) and by means of a groove (20) positively connected to the pole housing (19).
10. Heckscheibenwischeranlage insbesondere für ein Kraftfahrzeug mit einem10. rear window wiper system, in particular for a motor vehicle with a
Elektromotor (1) nach einem der vorhergehenden Ansprüche. Electric motor (1) according to one of the preceding claims.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006042340A DE102006042340A1 (en) | 2006-09-08 | 2006-09-08 | Electric motor, in particular for a windshield wiper drive of a motor vehicle with an improved recording of the bearing of the armature shaft |
PCT/EP2007/057145 WO2008028711A1 (en) | 2006-09-08 | 2007-07-12 | Electric motor, in particular for the windscreen wiper drive of a motor vehicle, with improved seating for the armature shaft bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2064801A1 true EP2064801A1 (en) | 2009-06-03 |
Family
ID=38596652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07787416A Withdrawn EP2064801A1 (en) | 2006-09-08 | 2007-07-12 | Electric motor, in particular for the windscreen wiper drive of a motor vehicle, with improved seating for the armature shaft bearing |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090273250A1 (en) |
EP (1) | EP2064801A1 (en) |
JP (1) | JP2010503371A (en) |
KR (1) | KR20090048625A (en) |
CN (1) | CN101512875A (en) |
BR (1) | BRPI0716244A2 (en) |
DE (1) | DE102006042340A1 (en) |
WO (1) | WO2008028711A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006042321A1 (en) * | 2006-09-08 | 2008-03-27 | Robert Bosch Gmbh | Rear window wiper with an electric drive arrangement for motor vehicles |
DE102010013622B4 (en) * | 2009-05-14 | 2014-07-31 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Drive device for an actuating element of a motor vehicle |
DE102011087083A1 (en) * | 2011-11-25 | 2013-05-29 | Robert Bosch Gmbh | electric motor |
US9281725B2 (en) * | 2013-03-13 | 2016-03-08 | Regal Beloit America, Inc. | Electric machine and method of manufacturing the same |
DE102013015613B4 (en) * | 2013-09-19 | 2020-01-16 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Electric drive |
DE102013226527A1 (en) * | 2013-12-18 | 2015-06-18 | Zf Friedrichshafen Ag | Combined rolling and sliding bearing of a gear shaft |
DE102015220052A1 (en) * | 2015-10-15 | 2017-04-20 | Continental Automotive Gmbh | Supporting arrangement of a bearing element on a component of an electrical machine and method for producing such a support arrangement |
WO2019111430A1 (en) * | 2017-12-04 | 2019-06-13 | 三菱電機株式会社 | Electric motor and electric fan |
DE102018127283A1 (en) * | 2018-10-31 | 2020-04-30 | Eto Magnetic Gmbh | Rotor device, valve and method for assembling a rotor device |
JP7304206B2 (en) * | 2019-05-31 | 2023-07-06 | ミネベアミツミ株式会社 | motor |
EP3785961A1 (en) * | 2019-08-26 | 2021-03-03 | Vibracoustic Nantes SAS | Bracket for supporting an electric motor and method for manufacturing such a bracket |
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US4118644A (en) * | 1974-10-12 | 1978-10-03 | Firma Schulte Elektrotechnik Kg | Electrical machinery |
DE2756531A1 (en) * | 1977-12-19 | 1979-06-21 | Siemens Ag | MOTORIZED WINDOW REGULATORS, IN PARTICULAR FOR INSTALLATION IN THE DOORS OF MOTOR VEHICLES |
DE2905869A1 (en) * | 1979-02-16 | 1980-08-28 | Rau Swf Autozubehoer | ELECTRIC DRIVE UNIT |
US4340830A (en) * | 1979-11-30 | 1982-07-20 | Scm Corporation | Electric motor assembly |
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DE3533898A1 (en) * | 1985-09-23 | 1987-04-02 | Siemens Ag | BEARING FLANGE, ESPECIALLY FOR A SINGLE-SIDED AND AXIAL TENSIONED OUTDOOR ROTOR MOTOR |
DE3830386A1 (en) * | 1988-09-07 | 1990-03-15 | Kress Elektrik Gmbh & Co | Shaft bearing for an electric motor, and an assembly method for it |
DE4003155A1 (en) * | 1990-02-03 | 1991-08-29 | Bosch Gmbh Robert | ELECTRIC MACHINE WITH FOREIGN VENTILATION |
DE4032666A1 (en) * | 1990-10-15 | 1992-04-16 | Reich Maschf Gmbh Karl | Electric hand-tool with two-part housing - has bearing bridge with bearing block enclosing rotor bearing and attached brush holder |
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DE10006350A1 (en) * | 2000-02-12 | 2001-08-16 | Bosch Gmbh Robert | Electric drive, in particular for motor vehicles |
IT250080Y1 (en) * | 2000-05-03 | 2003-07-07 | Europ Elec Motors Design | STRUCTURE OF ENVELOPE OF SUBSTANTIALLY ELLIPSOID SHAPE, PARTICULARLY SUITABLE FOR SMALL ELECTRIC MOTORS OF A DATE SERIES |
DE10051309A1 (en) * | 2000-10-17 | 2002-05-16 | Bosch Gmbh Robert | bearing seat |
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-
2006
- 2006-09-08 DE DE102006042340A patent/DE102006042340A1/en not_active Withdrawn
-
2007
- 2007-07-12 US US12/305,238 patent/US20090273250A1/en not_active Abandoned
- 2007-07-12 WO PCT/EP2007/057145 patent/WO2008028711A1/en active Application Filing
- 2007-07-12 KR KR1020097004715A patent/KR20090048625A/en not_active Application Discontinuation
- 2007-07-12 BR BRPI0716244-8A patent/BRPI0716244A2/en not_active IP Right Cessation
- 2007-07-12 CN CNA2007800333690A patent/CN101512875A/en active Pending
- 2007-07-12 EP EP07787416A patent/EP2064801A1/en not_active Withdrawn
- 2007-07-12 JP JP2009527081A patent/JP2010503371A/en not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of WO2008028711A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20090048625A (en) | 2009-05-14 |
CN101512875A (en) | 2009-08-19 |
US20090273250A1 (en) | 2009-11-05 |
DE102006042340A1 (en) | 2008-03-27 |
WO2008028711A1 (en) | 2008-03-13 |
JP2010503371A (en) | 2010-01-28 |
BRPI0716244A2 (en) | 2013-04-02 |
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