DE102011055337A1 - Windscreen wiper motor for motor car, has yoke element formed as separate cylindrical element and radially arranged between magnetic elements and cylindrical region of motor casing, where motor casing is made of light metal or plastic - Google Patents
Windscreen wiper motor for motor car, has yoke element formed as separate cylindrical element and radially arranged between magnetic elements and cylindrical region of motor casing, where motor casing is made of light metal or plastic Download PDFInfo
- Publication number
- DE102011055337A1 DE102011055337A1 DE102011055337A DE102011055337A DE102011055337A1 DE 102011055337 A1 DE102011055337 A1 DE 102011055337A1 DE 102011055337 A DE102011055337 A DE 102011055337A DE 102011055337 A DE102011055337 A DE 102011055337A DE 102011055337 A1 DE102011055337 A1 DE 102011055337A1
- Authority
- DE
- Germany
- Prior art keywords
- windscreen wiper
- magnetic elements
- motor housing
- wiper motor
- motor
- 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- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- 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
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
Abstract
Description
Stand der Technik State of the art
Die Erfindung betrifft einen Scheibenwischermotor nach dem Oberbegriff des Anspruchs 1. The invention relates to a windscreen wiper motor according to the preamble of claim 1.
Ein derartiger Scheibenwischermotor ist bereits aus der Praxis bekannt und weist ein aus tiefgezogenem Stahlblech bestehendes Motorgehäuse auf, in dem eine Ankerwelle drehbar gelagert ist. Die Wicklungen des Ankers wirken dabei mit an dem Innenumfang des Motorgehäuses ortsfest angeordneten Magneten zusammen, wobei das aus Stahlblech bestehende Motorgehäuse zur Verstärkung des magnetischen Flusses ein Rückschlusselement für die Magnetelemente ausbildet. Nachteilig dabei ist, dass ein derartiges, aus Stahlblech hergestelltes und tiefgezogenes Motorgehäuse zum einen ein relativ hohes Gewicht aufweist, und zum anderen relativ aufwändig gefertigt ist. Such a windshield wiper motor is already known from practice and has a deep-drawn steel sheet existing motor housing in which an armature shaft is rotatably mounted. The windings of the armature act together with magnet fixedly arranged on the inner circumference of the motor housing, wherein the motor housing consisting of sheet steel for reinforcing the magnetic flux forms a return element for the magnetic elements. The disadvantage here is that such, made of sheet steel and deep-drawn motor housing on the one hand has a relatively high weight, and on the other hand is made relatively expensive.
Offenbarung der Erfindung Disclosure of the invention
Ausgehend von dem dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Scheibenwischermotor nach dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass dieser ein besonders geringes Gewicht aufweist. Diese Aufgabe wird bei einem Scheibenwischermotor mit den Merkmalen des Anspruchs 1 dadurch gelöst, dass das Rückschlusselement als ein vom Motorgehäuse separates, zylindrisches Bauteil ausgebildet ist, das radial zwischen den Magnetelementen und dem zylindrischen Bereich des Motorgehäuses angeordnet ist, und dass das Motorgehäuse aus Leichtmetall oder Kunststoff besteht. Mit anderen Worten gesagt bedeutet dies, dass das beim Stand der Technik als Rückschlusselement verwendete Motorgehäuse durch ein separates, dieselbe Funktion aufweisendes Bauteil ersetzt wird, so dass bei gleichen elektrischen bzw. magnetischen Eigenschaften ein Motorgehäuse aus Leichtmetall oder Kunststoff verwendet werden kann. Dies hat den Vorteil, dass die Funktionen des Rückschlusselements und des Motorgehäuses durch jeweils separate Bauteile optimal erfüllt werden können, so dass beispielsweise für das Rückschlusselement, im Vergleich zum Stand der Technik, eine geringere Masse an Metall verwendet werden kann, während das Motorgehäuse z.B. hinsichtlich seiner Festigkeit optimiert werden kann. Based on the illustrated prior art, the invention has the object, a windshield wiper motor according to the preamble of claim 1 such that it has a very low weight. This object is achieved in a windshield wiper motor with the features of claim 1, characterized in that the return element is designed as a separate from the motor housing, cylindrical member which is arranged radially between the magnetic elements and the cylindrical portion of the motor housing, and that the motor housing made of light metal or Plastic exists. In other words, this means that the engine housing used in the prior art as a return element is replaced by a separate, the same function exhibiting component, so that with the same electrical or magnetic properties, a motor housing made of light metal or plastic can be used. This has the advantage that the functions of the return element and the motor housing can be optimally fulfilled by separate components, so that, for example, for the return element, compared to the prior art, a lower mass of metal can be used while the motor housing, e.g. can be optimized in terms of its strength.
Vorteilhafte Weiterbildungen des erfindungsgemäßen Scheibenwischermotors sind in den Unteransprüchen aufgeführt. In den Rahmen der Erfindung fallen sämtliche Kombinationen aus zumindest zwei von in den Ansprüchen, der Beschreibung und/oder den Figuren offenbarten Merkmalen. Advantageous developments of the windshield wiper motor according to the invention are listed in the subclaims. All combinations of at least two of the features disclosed in the claims, the description and / or the figures fall within the scope of the invention.
In einer ersten konstruktiven Ausgestaltung des Rückschlusselements ist dieses als einteiliges, ringförmiges Bauteil in Form eines Eisen enthaltenden Metallrings ausgebildet. Die Herstellung eines derartigen zylindrischen bzw. ringförmigen Bauteils kann auf verschiedenste Art und Weise erfolgen. Beispielsweise ist es denkbar, aus einem Blechstreifen einen Ring zu formen, der anschließend an seiner Verbindungsstelle verschweißt wird. Alternativ sind auch gegossene oder gedrehte Bauteile denkbar. In a first structural embodiment of the return element this is formed as a one-piece, annular member in the form of a metal ring containing iron. The production of such a cylindrical or annular component can be done in various ways. For example, it is conceivable to form a metal strip from a ring, which is then welded at its junction. Alternatively, cast or rotated components are conceivable.
In einer alternativen Ausgestaltung zu einem einteiligen, ringförmigen Bauteil wird vorgeschlagen, dass das Rückschlusselement aus einer Vielzahl von ringförmigen Einzelblechen besteht, die in Form eines Blechstapels übereinander in direktem Anlagekontakt angeordnet sind. Eine derartige Ausbildung des Rückschlusselements hat den Vorteil, dass sich die einzelnen (ringförmigen) Einzelbleche auf besonders einfache Art und Weise herstellen lassen, insbesondere durch Ausstanzen. In an alternative embodiment to a one-piece, annular member is proposed that the return element consists of a plurality of annular individual sheets, which are arranged one above the other in the form of a sheet stack in direct contact contact. Such a design of the return element has the advantage that the individual (annular) individual plates can be produced in a particularly simple manner, in particular by punching.
Um die miteinander in Anlagekontakt befindlichen Einzelbleche miteinander zu verbinden wird in einer ersten fertigungstechnischen Variante vorgeschlagen, dass die Einzelbleche durch wenigstens eine, vorzugsweise durch mehrere, in gleichmäßigen Winkelabständen zueinander angeordnete, an der Außenseite der Einzelbleche in Längsrichtung verlaufende Schweißnaht stoffschlüssig miteinander verbunden sind. Hierbei wird durch die Verwendung mehrerer Schweißnähte insbesondere ein Verzug der einzelnen Blechringe zueinander vermieden. In order to connect the individual sheets located in contact with each other is proposed in a first manufacturing variant that the individual sheets are materially interconnected by at least one, preferably by a plurality, at equal angular intervals to each other, extending on the outside of the individual sheets in the longitudinal direction weld. In this case, a delay of the individual sheet metal rings is avoided in particular by using multiple welds in particular.
In alternativer herstellungstechnischer Variante ist es auch möglich, dass die Einzelbleche durch gegenseitiges Verpressen oder Verklemmen miteinander verbunden sind. Bei einer derartigen Variante wird der Wärmeeintrag in die Einzelbleche minimiert, so dass ein Verzug in Folge von Wärmespannungen ausgeschlossen werden kann. In alternative manufacturing technology variant, it is also possible that the individual sheets are interconnected by mutual pressing or jamming. In such a variant, the heat input is minimized in the individual sheets, so that a delay due to thermal stresses can be excluded.
Eine weitere konstruktive Ausgestaltung des Rückschlusselements sieht vor, dass das Rückschlusselement an seiner radialen Innenwand in Längsrichtung verlaufende Trennstege aufweist, zwischen denen die Magnetelemente formschlüssig aufgenommen sind. Bei einer derartigen Variante dienen die Trennstege als Montagehilfe für die Magnetelemente, so dass sich diese besonders einfach ausrichten lassen, ohne dass hier zusätzliche Hilfsvorrichtungen oder ähnliches erforderlich sind. A further constructive embodiment of the return element provides that the return element has on its radial inner wall in the longitudinal direction extending separating webs, between which the magnetic elements are positively received. In such a variant, the partitions serve as an assembly aid for the magnetic elements, so that they can be particularly easily aligned, without additional auxiliary devices or the like are required here.
Um die Magnetelemente mit dem Rückschlusselement zu verbinden, ohne dass hierzu zusätzliche Hilfsstoffe, z.B. Klebstoffe oder ähnliches erforderlich sind, wird darüber hinaus vorgeschlagen, dass die Trennstege eine in Längsrichtung verlaufende Einkerbung aufweisen, die die Trennstege in zwei Teilstege unterteilen, und dass die Teilstege in Umfangsrichtung verformbar sind und dadurch die Magnetelemente zwischen den Teilstegen verklemmen. In order to connect the magnetic elements with the return element, without the need for additional auxiliaries, such as adhesives or the like, it is also proposed that the partitions have a longitudinal notch, which divides the dividers in two Divide part webs, and that the partial webs are deformable in the circumferential direction, thereby jamming the magnetic elements between the partial webs.
Eine besonders vorteilhafte Methode zur Fertigung eines Scheibenwischermotors, bei der eine besonders einfache Montage sowie Überprüfung der Bauteile auf deren Funktion ermöglicht wird sieht vor, dass das Rückschlusselement zusammen mit den Magnetelementen als Baugruppe ausgebildet ist, die nach deren Montage in das Motorgehäuse einsetzbar und mit dem Motorgehäuse verbunden ist. Mit anderen Worten gesagt bedeutet dies, dass die Magnetelemente mit dem Rückschlusselement außerhalb des Motorgehäuses miteinander verbunden werden und erst anschließend als Baugruppe in das Motorgehäuse eingesetzt und mit diesem verbunden wird. A particularly advantageous method for producing a windshield wiper motor, in which a particularly simple assembly and verification of the components is made possible on their function provides that the return element is formed together with the magnetic elements as an assembly that can be used after their assembly in the motor housing and with the Motor housing is connected. In other words, this means that the magnetic elements are connected to the return element outside of the motor housing and only then used as an assembly in the motor housing and connected to this.
Zur Minimierung des Materialbedarfs für das Rückschlusselement und zur Erzielung einer möglichst kompakten Bauweise wird darüber hinaus vorgeschlagen, dass die axiale Länge des Rückschlusselements im Wesentlichen der Länge der Magnetelemente entspricht. To minimize the material requirement for the return element and to achieve the most compact design is also proposed that the axial length of the return element substantially corresponds to the length of the magnetic elements.
Um insbesondere bei einem aus Kunststoff bestehenden Motorgehäuse, oder aber generell bei Motorgehäusen, die eine relativ geringe Wandstärke aufweisen eine verbesserte Wärmeabfuhr zu ermöglichen wird darüber hinaus vorgeschlagen, dass das Motorgehäuse an seiner Außenseite Kühlrippen aufweist. In order to enable in particular in a motor housing made of plastic, or generally in motor housings having a relatively small wall thickness improved heat dissipation is also proposed that the motor housing has on its outside cooling fins.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing.
Diese zeigt in: This shows in:
Gleiche Bauteile bzw. Bauteile mit gleicher Funktion sind in den Figuren mit den gleichen Bezugsziffern versehen. The same components or components with the same function are provided in the figures with the same reference numerals.
In der
Wie aus einer Zusammenschau der
Im Bereich der Ankerbleche
Aus den
Die Blechteile
Zur Montage des Scheibenwischermotors
Der soweit beschriebene Scheibenwischermotor
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 10 10
- Scheibenwischermotor wiper motor
- 11 11
- Gehäuse casing
- 12 12
- Motorgehäuse motor housing
- 13 13
- Getriebegehäuse gearbox
- 14 14
- Anschlussflansch flange
- 15 15
- Versteifungsrippe stiffening rib
- 17 17
- Ankerwelle armature shaft
- 20 20
- Anker anchor
- 21 21
- Ankerblech lamination
- 22 22
- Drahtwicklung wire winding
- 23 23
- Kollektor collector
- 24 24
- Lager camp
- 25 25
- Magnetelement magnetic element
- 26 26
- Magnetelement magnetic element
- 28 28
- Rückschlusselement Return element
- 29 29
- Metallring metal ring
- 30 30
- Innenwand inner wall
- 32 32
- Blechteil sheet metal part
- 33–36 33-36
- Trennsteg divider
- 37 37
- Einkerbung notch
- 38, 39 38, 39
- Teilsteg partial web
- 40–43 40-43
- Magnetelement magnetic element
- 45–47 45-47
- Pfeil arrow
- 48 48
- Außenseite outside
- 50 50
- Schweißnaht Weld
- 52 52
- Absatz paragraph
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011055337A DE102011055337A1 (en) | 2011-11-15 | 2011-11-15 | Windscreen wiper motor for motor car, has yoke element formed as separate cylindrical element and radially arranged between magnetic elements and cylindrical region of motor casing, where motor casing is made of light metal or plastic |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011055337A DE102011055337A1 (en) | 2011-11-15 | 2011-11-15 | Windscreen wiper motor for motor car, has yoke element formed as separate cylindrical element and radially arranged between magnetic elements and cylindrical region of motor casing, where motor casing is made of light metal or plastic |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011055337A1 true DE102011055337A1 (en) | 2013-05-16 |
Family
ID=48144794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102011055337A Withdrawn DE102011055337A1 (en) | 2011-11-15 | 2011-11-15 | Windscreen wiper motor for motor car, has yoke element formed as separate cylindrical element and radially arranged between magnetic elements and cylindrical region of motor casing, where motor casing is made of light metal or plastic |
Country Status (1)
Country | Link |
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DE (1) | DE102011055337A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015000474A1 (en) * | 2013-07-03 | 2015-01-08 | Schaeffler Technologies Gmbh & Co. Kg | Electric motor |
DE202019103356U1 (en) * | 2019-06-14 | 2020-09-15 | Dewertokin Gmbh | Suppressed linear drive |
WO2021253763A1 (en) * | 2020-06-18 | 2021-12-23 | 广州星际悦动股份有限公司 | Stator magnetism gathering mechanism, electric motor, and electric toothbrush |
Citations (11)
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---|---|---|---|---|
US4795932A (en) * | 1987-07-31 | 1989-01-03 | United Technologies Electro Systems, Inc. | Double insulated motor including a magnet retainer |
JPH03118752A (en) * | 1989-10-02 | 1991-05-21 | Hitachi Ltd | Yoke for dc machine |
US6246142B1 (en) * | 1999-03-19 | 2001-06-12 | Mitsubishi Denki Kabushiki Kaisha | Stator core for car AC generator and process for producing stator core for car AC generator |
DE10110466A1 (en) * | 2001-03-05 | 2002-09-26 | Compact Dynamics Gmbh | Assembly of an electrical machine and electrical machine with such an assembly |
DE69717703T2 (en) * | 1996-03-31 | 2003-09-18 | Sanyo Electric Co | magnet motor |
DE10256399A1 (en) * | 2002-12-02 | 2004-06-24 | Elero Gmbh | Squirrel cage for an electric motor and method for producing such a squirrel cage |
DE10354969A1 (en) * | 2002-12-13 | 2004-06-24 | Black & Decker Inc., Newark | Stator assembly for permanent magnet electric motor, has plastic molding around permanent magnets to secure magnets to flux ring and to secure flux ring to housing |
DE102004042927A1 (en) * | 2004-09-02 | 2006-03-09 | Heinz Leiber | Rotary electrical machine with permanent magnet excitation, has stator in two axially-adjacent parts forming intermediate gap containing disc rotor components |
DE102006016271A1 (en) * | 2005-04-12 | 2006-10-19 | Sew-Eurodrive Gmbh & Co. Kg | Electric motor, has fixture elements provided as streamlined thickened parts of cooling fins |
DE102005048731A1 (en) * | 2005-10-12 | 2007-04-19 | Zf Friedrichshafen Ag | Permanent magnet rotor for an electric motor has a laminated yoke with radially aligned retaining overhangs extending in the yoke's axial direction |
DE202007003374U1 (en) * | 2007-03-05 | 2007-06-14 | Kw-Generator Gmbh & Co. Kg | Electrical machine e.g. generator, housing, has sleeve with inner space having inner diameter that increases in relation to inner diameter of overall size of housing, and fins provided with smooth profile for enlarging surfaces of fins |
-
2011
- 2011-11-15 DE DE102011055337A patent/DE102011055337A1/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4795932A (en) * | 1987-07-31 | 1989-01-03 | United Technologies Electro Systems, Inc. | Double insulated motor including a magnet retainer |
JPH03118752A (en) * | 1989-10-02 | 1991-05-21 | Hitachi Ltd | Yoke for dc machine |
DE69717703T2 (en) * | 1996-03-31 | 2003-09-18 | Sanyo Electric Co | magnet motor |
US6246142B1 (en) * | 1999-03-19 | 2001-06-12 | Mitsubishi Denki Kabushiki Kaisha | Stator core for car AC generator and process for producing stator core for car AC generator |
DE10110466A1 (en) * | 2001-03-05 | 2002-09-26 | Compact Dynamics Gmbh | Assembly of an electrical machine and electrical machine with such an assembly |
DE10256399A1 (en) * | 2002-12-02 | 2004-06-24 | Elero Gmbh | Squirrel cage for an electric motor and method for producing such a squirrel cage |
DE10354969A1 (en) * | 2002-12-13 | 2004-06-24 | Black & Decker Inc., Newark | Stator assembly for permanent magnet electric motor, has plastic molding around permanent magnets to secure magnets to flux ring and to secure flux ring to housing |
DE102004042927A1 (en) * | 2004-09-02 | 2006-03-09 | Heinz Leiber | Rotary electrical machine with permanent magnet excitation, has stator in two axially-adjacent parts forming intermediate gap containing disc rotor components |
DE102006016271A1 (en) * | 2005-04-12 | 2006-10-19 | Sew-Eurodrive Gmbh & Co. Kg | Electric motor, has fixture elements provided as streamlined thickened parts of cooling fins |
DE102005048731A1 (en) * | 2005-10-12 | 2007-04-19 | Zf Friedrichshafen Ag | Permanent magnet rotor for an electric motor has a laminated yoke with radially aligned retaining overhangs extending in the yoke's axial direction |
DE202007003374U1 (en) * | 2007-03-05 | 2007-06-14 | Kw-Generator Gmbh & Co. Kg | Electrical machine e.g. generator, housing, has sleeve with inner space having inner diameter that increases in relation to inner diameter of overall size of housing, and fins provided with smooth profile for enlarging surfaces of fins |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015000474A1 (en) * | 2013-07-03 | 2015-01-08 | Schaeffler Technologies Gmbh & Co. Kg | Electric motor |
DE202019103356U1 (en) * | 2019-06-14 | 2020-09-15 | Dewertokin Gmbh | Suppressed linear drive |
WO2020249735A1 (en) | 2019-06-14 | 2020-12-17 | Dewertokin Gmbh | Interference-suppressed linear drive |
WO2021253763A1 (en) * | 2020-06-18 | 2021-12-23 | 广州星际悦动股份有限公司 | Stator magnetism gathering mechanism, electric motor, and electric toothbrush |
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