WO2000051855A1 - Windshield wiper drive - Google Patents

Windshield wiper drive Download PDF

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Publication number
WO2000051855A1
WO2000051855A1 PCT/DE2000/000402 DE0000402W WO0051855A1 WO 2000051855 A1 WO2000051855 A1 WO 2000051855A1 DE 0000402 W DE0000402 W DE 0000402W WO 0051855 A1 WO0051855 A1 WO 0051855A1
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WO
WIPO (PCT)
Prior art keywords
motor
drive
wiper drive
wiper
lever
Prior art date
Application number
PCT/DE2000/000402
Other languages
German (de)
French (fr)
Inventor
Peter Braun
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
Publication of WO2000051855A1 publication Critical patent/WO2000051855A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/18—Means for transmitting drive mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/24—Means for transmitting drive mechanically by rotary cranks

Definitions

  • the invention is based on a wiper drive according to the preamble of claim 1.
  • Wiper systems for motor vehicles are fastened to the body of a motor vehicle with a wiper carrier, a so-called circuit board or tube board - if the wiper carrier also consists of pipes.
  • the circuit board carries a wiper drive with a motor and with a gear attached to it, the output shaft of which, as a rule, drives further cranks via a crank and articulated rods, each of which is firmly connected to a drive shaft for each windshield wiper.
  • the gearbox is usually screwed to a motor board with three screws, which is held by a board tube. The screws engage in the protruding screw sockets on a housing cover on the output side, with which the gear housing is supported on the motor board.
  • the drive shaft of the windshield wiper is mounted in a wiper bearing, the bearing housing of which is attached to the circuit board or molded on. This is attached directly to a vehicle body via the wiper bearings or via attachment eyes which are formed on the wiper bearing, on the circuit board and / or on the motor board.
  • cranks and levers form a lever mechanism which converts the rotating movement of the motor shaft into a swiveling movement of the drive shafts of the windshield wipers.
  • Wiper drives with reversible motors are also known, in which the crank executes only a swiveling movement on the output shaft, which is transmitted to the drive shafts of the windshield wipers by the lever gear.
  • a wiper drive which contains a motor with a gear and a crank mounted on an output shaft.
  • the gear is usually a worm gear with a worm and a worm wheel for reduction and torque increase.
  • a shaft is inserted in the middle of the worm wheel, which is mounted in the gear housing and on which the crank is attached, with which the lever gear is driven.
  • This arrangement is used for rotary machines and for reversing motors, the lever mechanism having to be adapted to the type of drive.
  • Known wiper drives require much installation space for the freedom of movement of the crank and for the transmission and are frequently designed ⁇ fig very expensive.
  • the motor is reversible and drives joints of the lever gear via a linear gear. This is drive-wise with a drive shaft for each wiper connected. With the linear gear, the motor creates a reciprocating movement in a small space.
  • the joints of the lever gear coupled to the linear gear require only little freedom of movement.
  • the linear gearbox can be made very compact by installing a worm or screw spindle on the motor shaft with a threaded nut on it. This is rotatably guided in a housing, but axially movable. At least one hinge pin is connected to it. As a rule, however, two articulation points are required if two windshield wipers are driven.
  • the hinge pins which protrude from the housing of the linear gear and are expediently designed as ball studs, can be freely arranged, e.g. two pivot pins can be arranged side by side in one plane parallel to the worm or screw spindle. This results in a particularly flat design.
  • the width of the installation space in this area is only determined by the width of the housing.
  • an arrangement transverse to the screw or screw spindle can also be advantageous.
  • the hinge pins can be attached directly to the threaded nut or connected to one another via an intermediate piece.
  • a hinge pin with two spherical sections is arranged in a transverse plane to the worm or screw spindle.
  • the housing of the linear drive is very narrow and expediently has a polygonal cross section. This makes it easy to attach fasteners gen. Furthermore, the long and flat wall parts are suitable for attaching switching and control devices.
  • the direction of rotation of the motor is switched over at the reversal points of the linear transmission by expediently changing the polarity of the motor voltage by means of semiconductors, relays or other switching devices.
  • Fig. 1 is a schematic side view of a wiper drive according to the invention
  • Fig. 2 is an enlarged section corresponding to the
  • FIG. 1 is a schematic plan view of a wiper drive according to Fig. 1,
  • Fig. 4 shows a variant of Fig. 1
  • FIG. 5 shows a schematic top view of a wiper drive according to FIG. 4. Description of the embodiments
  • the wiper drive 10 consists essentially of a motor 12 and a linear gear 14 mounted thereon, the output element of which is in the form of a threaded nut 18 via articulated bolts 20, 22, 24 in the form of ball pins with a lever gear, not shown, consisting of cranks and articulated levers, is articulated. (Figs. 1, 2 and 3).
  • the linear gear 14 is surrounded by a housing 36 which has a rectangular opening 38 for the hinge pins 20, 22 and 24.
  • Motor 12 are driven in a direction of rotation 42 until the threaded nut 18 reaches one of the two reversal points 30, 32 at which the motor 12 reverses its direction of rotation 42.
  • a linear back and forth movement of the threaded nut 18 with the joint pins 20, 22, 24 in the direction of movement 40 is thus generated between the two reversal points 30, 32, the translation of the linear gear 14 being determined by the pitch of the worm 16 or the threaded spindle 34 .
  • the linear gear 14 allows a free arrangement of the hinge pins 20, 22, 24.
  • the hinge pin 20 can have two spherical sections 26 and 28 which are arranged one behind the other in a common transverse plane 46 to the screw 16 or threaded spindle 34 are arranged.
  • a variant according to FIGS. 4 and 5 shows the arrangement of the joint pins 20 and 22 next to one another in a plane parallel to the worm 16 or to the threaded spindle 34.
  • the hinge pins 20 and 22 can be fastened directly to the worm 16 or the threaded spindle 34 or can be rigidly connected to one another by an intermediate piece 48.
  • a switching device 50 for changing the polarity of the motor voltage switches the direction of rotation 42 of the motor 12 at the reversal points 30, 32. It fits harmoniously into the available installation space of the linear transmission 14, which has a polygonal cross section. Relays, semiconductors or other suitable electronic circuits are suitable for switching.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Transmission Devices (AREA)

Abstract

The invention relates to a windshield wiper drive (10) with a motor (12) and a transmission (14) the drive element (18) of which drives levers of a lever drive that are functionally linked with a drive shaft for every windshield wiper via cranks. According to the invention, the motor (12) is reversible and drives the joints of the lever drive via a linear drive (14).

Description

WischerantriebWiper drive
Stand der TechnikState of the art
Die Erfindung geht von einem Wischerantrieb nach dem Oberbe- griff des Anspruchs 1 aus.The invention is based on a wiper drive according to the preamble of claim 1.
Wischeranlagen für Kraftfahrzeuge werden mit einem Wischerträger, einer sogenannten Platine bzw. Rohrplatine - wenn der Wischerträger auch aus Rohren besteht -, an der Karosserie eines Kraftfahrzeugs befestigt. Die Platine trägt einen Wischerantrieb mit einem Motor und mit einem daran angebauten Getriebe, dessen Abtriebswelle in der Regel über eine Kurbel und Gelenkstangen weitere Kurbeln antreibt, die jeweils mit einer Antriebswelle für jeden Scheibenwischer fest verbunden sind. Das Getriebegehäuse ist in der Regel mit drei Schrauben an einer Motorplatine angeschraubt, die von einem Platinenrohr gehalten wird. Die Schrauben greifen in vorstehende Schraubenstutzen eines abtriebsseitigen Gehäusedeckels ein, mit denen sich das Getriebegehäuse an der Motorplatine ab- stützt.Wiper systems for motor vehicles are fastened to the body of a motor vehicle with a wiper carrier, a so-called circuit board or tube board - if the wiper carrier also consists of pipes. The circuit board carries a wiper drive with a motor and with a gear attached to it, the output shaft of which, as a rule, drives further cranks via a crank and articulated rods, each of which is firmly connected to a drive shaft for each windshield wiper. The gearbox is usually screwed to a motor board with three screws, which is held by a board tube. The screws engage in the protruding screw sockets on a housing cover on the output side, with which the gear housing is supported on the motor board.
Die Antriebswelle des Scheibenwischers ist in einem Wischerlager gelagert, dessen Lagergehäuse an der Platine befestigt oder angeformt ist. Dieser ist unmittelbar über die Wischerlager oder über Befestigungsaugen, die am Wischerlager, an der Platine und/oder der Motorplatine angeformt sind, an einer Fahrzeugkarosserie befestigt.The drive shaft of the windshield wiper is mounted in a wiper bearing, the bearing housing of which is attached to the circuit board or molded on. This is attached directly to a vehicle body via the wiper bearings or via attachment eyes which are formed on the wiper bearing, on the circuit board and / or on the motor board.
Die Kurbeln und Hebel bilden ein Hebelgetriebe, das die drehende Bewegung der Motorwelle in eine Schwenkbewegung der Antriebswellen der Scheibenwischer umsetzt. Es sind auch Wischerantriebe mit reversierbaren Motoren bekannt, bei denen die Kurbel an der Abtriebswelle nur eine Schwenkbewegung ausführt, die durch das Hebelgetriebe auf die Antriebswellen der Scheibenwischer übertragen wird.The cranks and levers form a lever mechanism which converts the rotating movement of the motor shaft into a swiveling movement of the drive shafts of the windshield wipers. Wiper drives with reversible motors are also known, in which the crank executes only a swiveling movement on the output shaft, which is transmitted to the drive shafts of the windshield wipers by the lever gear.
Aus der EP 0 781 691 AI ist ein Wischerantrieb bekannt, der einen Motor mit Getriebe und eine auf einer Abtriebswelle aufgesetzte Kurbel enthält. Üblicherweise ist das Getriebe ein Schneckengetriebe mit einer Schnecke und einem Schneckenrad zur Untersetzung und Momenterhöhung. In der Mitte des Schneckenrads ist eine Welle eingesetzt, welche im Getriebe- gehäuse gelagert ist und an der die Kurbel angesetzt wird, mit der das Hebelgetriebe angetrieben wird. Diese Anordnung wird für Rundläufer und für Reversiermotoren verwendet, wobei das Hebelgetriebe an die Antriebsart angepaßt werden muß. Bekannte Wischerantriebe benötigen für den Bewegungsfreiraum der Kurbel und für das Getriebe viel Einbauraum und sind häu¬ fig sehr aufwendig gestaltet.From EP 0 781 691 AI a wiper drive is known which contains a motor with a gear and a crank mounted on an output shaft. The gear is usually a worm gear with a worm and a worm wheel for reduction and torque increase. A shaft is inserted in the middle of the worm wheel, which is mounted in the gear housing and on which the crank is attached, with which the lever gear is driven. This arrangement is used for rotary machines and for reversing motors, the lever mechanism having to be adapted to the type of drive. Known wiper drives require much installation space for the freedom of movement of the crank and for the transmission and are frequently designed ¬ fig very expensive.
Vorteile der ErfindungAdvantages of the invention
Nach der Erfindung ist der Motor reversierbar und treibt über ein Lineargetriebe Gelenke des Hebelgetriebes an. Dieses ist triebmäßig mit einer Antriebswelle für jeden Scheibenwischer verbunden. Mit dem Lineargetriebe erzeugt der Motor eine hin- und hergehende Bewegung in einem kleinen Bauraum. Die am Lineargetriebe angekoppelten Gelenke des Hebelgetriebes erfordern nur wenig Bewegunsfreiräume .According to the invention, the motor is reversible and drives joints of the lever gear via a linear gear. This is drive-wise with a drive shaft for each wiper connected. With the linear gear, the motor creates a reciprocating movement in a small space. The joints of the lever gear coupled to the linear gear require only little freedom of movement.
Das Lineargetriebe kann sehr kompakt ausgeführt werden, indem an der Welle des Motors eine Schnecke oder eine Schraubenspindel angebaut ist, auf der eine Gewindemutter sitzt. Diese ist in einem Gehäuse drehfest, aber axial beweglich geführt. Mit ihr ist mindestens ein Gelenkbolzen verbunden. In der Regel sind allerdings zwei Anlenkpunkte erforderlich, wenn zwei Scheibenwischer angetrieben werden. Die Gelenkbolzen, die aus dem Gehäuse des Lineargetriebes herausragen und zweckmäßigerweise als Kugelzapfen ausgebildet sind, können freizügig an- geordnet werden, z.B. können zwei Gelenkbolzen nebeneinander in einer Ebene parallel zur Schnecke oder Schraubenspindel angeordnet werden. Dadurch ergibt sich eine besonders flache Bauweise. Werden dabei die Gelenkbolzen in Richtung der Schnecke oder Schraubenspindel angeordnet, wird die Breite des Bauraums in diesem Bereich nur durch die Gehäusebreite bestimmt. Allerdings kann je nach Einbauverhältnissen auch eine Anordnung quer zur Schnecke oder Schraubenspindel vorteilhaft sein. Die Gelenkbolzen können unmittelbar an der Gewindemutter befestigt oder über ein Zwischenstück miteinander verbunden sein. Gemäß einer weiteren Ausgestaltung der Erfindung ist ein Gelenkbolzen mit zwei kugelförmigen Abschnitten in einer Querebene zur Schnecke oder Schraubenspindel angeordnet.The linear gearbox can be made very compact by installing a worm or screw spindle on the motor shaft with a threaded nut on it. This is rotatably guided in a housing, but axially movable. At least one hinge pin is connected to it. As a rule, however, two articulation points are required if two windshield wipers are driven. The hinge pins, which protrude from the housing of the linear gear and are expediently designed as ball studs, can be freely arranged, e.g. two pivot pins can be arranged side by side in one plane parallel to the worm or screw spindle. This results in a particularly flat design. If the hinge pins are arranged in the direction of the worm or screw spindle, the width of the installation space in this area is only determined by the width of the housing. However, depending on the installation conditions, an arrangement transverse to the screw or screw spindle can also be advantageous. The hinge pins can be attached directly to the threaded nut or connected to one another via an intermediate piece. According to a further embodiment of the invention, a hinge pin with two spherical sections is arranged in a transverse plane to the worm or screw spindle.
Das Gehäuse des Linearantriebs baut sehr schmal und weist zweckmäßigerweise einen polygonen Querschnitt auf. Dadurch lassen sich in einfacher Weise Befestigungselemente anbrin- gen. Ferner eignen sich die langen und ebenen Wandteile zum Befestigen von Schalt- und Steuereinrichtungen.The housing of the linear drive is very narrow and expediently has a polygonal cross section. This makes it easy to attach fasteners gen. Furthermore, the long and flat wall parts are suitable for attaching switching and control devices.
Die Drehrichtung des Motors wird in den ümkehrpunkten des Lineargetriebes umgeschaltet, indem die Polarität der Motorspannung zweckmäßigerweise durch Halbleiter, Relais oder andere Schalteinrichtungen gewechselt wird.The direction of rotation of the motor is switched over at the reversal points of the linear transmission by expediently changing the polarity of the motor voltage by means of semiconductors, relays or other switching devices.
Zeichnungdrawing
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.
Es zeigen:Show it:
Fig. 1 eine schematische Seitenansicht eines erfindungsgemäßen Wischerantriebs, Fig. 2 einen vergrößerten Schnitt entsprechend derFig. 1 is a schematic side view of a wiper drive according to the invention, Fig. 2 is an enlarged section corresponding to the
Linie II-II in Fig. 1, Fig. 3 eine schematische Draufsicht eines Wischeran- triebs nach Fig. 1,Line II-II in Fig. 1, Fig. 3 is a schematic plan view of a wiper drive according to Fig. 1,
Fig. 4 eine Variante zu Fig. 1 undFig. 4 shows a variant of Fig. 1 and
Fig. 5 eine schematische Draufsicht eines Wischerantriebs nach Fig.4. Beschreibung der Ausführungsbeispiele5 shows a schematic top view of a wiper drive according to FIG. 4. Description of the embodiments
Der Wischerantrieb 10 besteht im wesentlichen aus einem Motor 12 und einem daran angebauten Lineargetriebe 14, dessen Ab- triebselement in Form einer Gewindemutter 18 über Gelenkbolzen 20, 22, 24 in Form von Kugelzapfen mit einem nicht dargestellten Hebelgetriebe, bestehend aus Kurbeln und angelenkten Hebeln, gelenkig verbunden ist. (Fig. 1, 2 und 3) . Das Lineargetriebe 14 wird von einem Gehäuse 36 umgeben, das eine rechteckige Öffnung 38 für die Gelenkbolzen 20, 22 und 24 hat.The wiper drive 10 consists essentially of a motor 12 and a linear gear 14 mounted thereon, the output element of which is in the form of a threaded nut 18 via articulated bolts 20, 22, 24 in the form of ball pins with a lever gear, not shown, consisting of cranks and articulated levers, is articulated. (Figs. 1, 2 and 3). The linear gear 14 is surrounded by a housing 36 which has a rectangular opening 38 for the hinge pins 20, 22 and 24.
Die Gewindemutter 18 wird in dem Gehäuse 36 drehfest, aber axial beweglich geführt. Sie sitzt auf einer Schnecke 16 (Fig. 1) oder einer Gewindespindel 34 (Fig. 5), die von demThe threaded nut 18 is guided in the housing 36 in a rotationally fixed but axially movable manner. It sits on a screw 16 (Fig. 1) or a threaded spindle 34 (Fig. 5) by the
Motor 12 in einer Drehrichtung 42 solange angetrieben werden, bis die Gewindemutter 18 einen der beiden Umkehrpunkte 30, 32 erreicht, an denen der Motor 12 seine Drehrichtung 42 umkehrt. Somit wird zwischen den beiden Umkehrpunkten 30, 32 eine lineare Hin- und Rückbewegung der Gewindemutter 18 mit den Gelenkbolzen 20, 22, 24 in Bewegungsrichtung 40 erzeugt, wobei die Übersetzung des Lineargetriebes 14 durch die Steigung der Schnecke 16 bzw. der Gewindespindel 34 bestimmt wird.Motor 12 are driven in a direction of rotation 42 until the threaded nut 18 reaches one of the two reversal points 30, 32 at which the motor 12 reverses its direction of rotation 42. A linear back and forth movement of the threaded nut 18 with the joint pins 20, 22, 24 in the direction of movement 40 is thus generated between the two reversal points 30, 32, the translation of the linear gear 14 being determined by the pitch of the worm 16 or the threaded spindle 34 .
Das Lineargetriebe 14 erlaubt eine freizügige Anordnung der Gelenkbolzen 20, 22, 24. So kann bei einer Ausführung nach Fig. 1, 2 und 3 der Gelenkbolzen 20 zwei kugelförmige Abschnitte 26 und 28 aufweisen, die hintereinander in einer ge- meinsamen Querebene 46 zur Schnecke 16 bzw. Gewindespindel 34 angeordnet sind. Eine Variante nach Figur 4 und 5 zeigt die Anordnung der Gelenkbolzen 20 und 22 nebeneinander in einer Ebene parallel zur Schnecke 16 bzw. zur Gewindespindel 34. Dabei können die Gelenkbolzen 20 und 22 unmittelbar an der Schnecke 16 bzw. der Gewindespindel 34 befestigt oder durch ein Zwischenstück 48 starr miteinander verbunden sein.The linear gear 14 allows a free arrangement of the hinge pins 20, 22, 24. Thus, in an embodiment according to FIGS. 1, 2 and 3, the hinge pin 20 can have two spherical sections 26 and 28 which are arranged one behind the other in a common transverse plane 46 to the screw 16 or threaded spindle 34 are arranged. A variant according to FIGS. 4 and 5 shows the arrangement of the joint pins 20 and 22 next to one another in a plane parallel to the worm 16 or to the threaded spindle 34. The hinge pins 20 and 22 can be fastened directly to the worm 16 or the threaded spindle 34 or can be rigidly connected to one another by an intermediate piece 48.
Eine Schalteinrichtung 50 (Fig. 5) zum Ändern der Polarität der Motorspannung schaltet die Drehrichtung 42 des Motors 12 in den Umkehrpunkten 30, 32 um. Sie fügt sich harmonisch in den zur Verfügung stehenden Bauraum des im Querschnitt poly- gon gestalteten Lineargetriebes 14 ein. Zum Umschalten eignen sich Relais, Halbleiter oder andere geeignete elektronische Schaltungen. A switching device 50 (FIG. 5) for changing the polarity of the motor voltage switches the direction of rotation 42 of the motor 12 at the reversal points 30, 32. It fits harmoniously into the available installation space of the linear transmission 14, which has a polygonal cross section. Relays, semiconductors or other suitable electronic circuits are suitable for switching.

Claims

Ansprüche Expectations
1. Wischerantrieb (10) mit einem Motor (12) und einem Getriebe (14), dessen Abtriebselement (18) Hebel eines Hebelgetriebes antreibt, die über Kurbeln jeweils mit einer Antriebswelle für jeden Scheibenwischer triebmäßig verbunden sind, dadurch gekennzeichnet, daß der Motor (12) reversierbar ist und über ein Lineargetriebe (14) Gelenke des Hebelgetriebes antreibt.1. wiper drive (10) with a motor (12) and a transmission (14), the output element (18) of which lever of a lever transmission drives, which are connected in terms of drive via cranks to a drive shaft for each windshield wiper, characterized in that the motor ( 12) is reversible and drives joints of the lever gear via a linear gear (14).
2. Wischerantrieb (10) nach Anspruch 1, dadurch gekennzeichnet, daß an einer Welle des Motors (12) eine Schnecke (16) oder eine Schraubenspindel (34) angebaut ist, auf der eine Gewindemutter (18) sitzt, die in einem Gehäuse (36) drehfest, aber axial beweglich geführt ist und die fest mit mindestens einem Gelenkbolzen (20, 22, 24) verbunden ist.2. Wiper drive (10) according to claim 1, characterized in that on a shaft of the motor (12), a worm (16) or a screw spindle (34) is mounted, on which a threaded nut (18) is seated, which in a housing ( 36) is guided in a rotationally fixed but axially movable manner and is fixedly connected to at least one hinge pin (20, 22, 24).
3. Wischerantrieb (10) nach Anspruch 2, dadurch gekennzeichnet, daß zwei Gelenkbolzen (22, 24) als Kugelzapfen ausgebildet und in einer Ebene (44) parallel zur Schnecke (16) oder Schraubenspindel (34) angeordnet sind.3. Wiper drive (10) according to claim 2, characterized in that two hinge pins (22, 24) are designed as ball pins and are arranged in a plane (44) parallel to the screw (16) or screw spindle (34).
4. Wischerantrieb (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein Gelenkbolzen (20) mit zwei kugelförmi¬ gen Abschnitten (26, 28) in einer Querebene (46) zur Schnecke (16) oder Schraubenspindel (34) angeordnet ist. 4. wiper drive (10) according to claim 1 or 2, characterized in that a hinge pin (20) with two kugelförmi ¬ gene sections (26, 28) in a transverse plane (46) to the worm (16) or screw spindle (34) is arranged .
5. Wischerantrieb (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Drehrichtung (42) des Motors (12) elektronisch durch Halbleiter, mittels Relais oder anderer Schalteinrichtungen zum Ändern der Polarität der Motorspannung in den Umkehrpunkten (30, 32) des Lineargetriebes (14) umgeschaltet wird.5. wiper drive (10) according to any one of the preceding claims, characterized in that the direction of rotation (42) of the motor (12) electronically by semiconductor, by means of relays or other switching devices for changing the polarity of the motor voltage in the reversal points (30, 32) of Linear gear (14) is switched.
6. Wischerantrieb (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse (36) einen polygonen Querschnitt aufweist. 6. Wiper drive (10) according to one of the preceding claims, characterized in that the housing (36) has a polygonal cross section.
PCT/DE2000/000402 1999-02-26 2000-02-10 Windshield wiper drive WO2000051855A1 (en)

Applications Claiming Priority (2)

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DE19908284.7 1999-02-26
DE1999108284 DE19908284B4 (en) 1999-02-26 1999-02-26 wiper drive

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008042707A1 (en) * 2008-10-09 2010-04-15 Robert Bosch Gmbh driving device
DE102009028940A1 (en) * 2009-08-27 2011-03-03 Robert Bosch Gmbh Windscreen installation driving device for motor vehicle, has single connecting rod and oscillating connecting rod integrated in rotation with output shaft, and assembly connecting rods in articulated manner

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US3686706A (en) * 1969-01-03 1972-08-29 Lucas Industries Ltd Vehicle windscreen wiping mechanisms
US3749431A (en) * 1971-04-08 1973-07-31 Rau Swf Autozubehoer Universal joint construction
GB2191389A (en) * 1986-06-10 1987-12-16 Optare Limited Windscreen wiper mechanism
US4768257A (en) * 1986-02-21 1988-09-06 Roltra S.P.A. Vehicle windshield wiper
EP0781691A1 (en) 1995-12-26 1997-07-02 Asmo Co., Ltd. Modular wiper device

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DE7920495U1 (en) * 1979-07-18 1981-01-15 Moschner, Horst, 7024 Filderstadt STACKLESS WIPER DRIVE FOR MOTOR VEHICLES

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Publication number Priority date Publication date Assignee Title
US3686706A (en) * 1969-01-03 1972-08-29 Lucas Industries Ltd Vehicle windscreen wiping mechanisms
US3749431A (en) * 1971-04-08 1973-07-31 Rau Swf Autozubehoer Universal joint construction
US4768257A (en) * 1986-02-21 1988-09-06 Roltra S.P.A. Vehicle windshield wiper
GB2191389A (en) * 1986-06-10 1987-12-16 Optare Limited Windscreen wiper mechanism
EP0781691A1 (en) 1995-12-26 1997-07-02 Asmo Co., Ltd. Modular wiper device

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