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DE4220673C1 - Automotive windscreen-wiper mechanism with crank-driven blades working opposite ways - in starting position has motor axis in line with joints on crank wiper arm and bell-crank lever - Google Patents

Automotive windscreen-wiper mechanism with crank-driven blades working opposite ways - in starting position has motor axis in line with joints on crank wiper arm and bell-crank lever

Info

Publication number
DE4220673C1
DE4220673C1 DE19924220673 DE4220673A DE4220673C1 DE 4220673 C1 DE4220673 C1 DE 4220673C1 DE 19924220673 DE19924220673 DE 19924220673 DE 4220673 A DE4220673 A DE 4220673A DE 4220673 C1 DE4220673 C1 DE 4220673C1
Authority
DE
Germany
Prior art keywords
crank
wiper
driven
starting position
wiper arm
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.)
Expired - Fee Related
Application number
DE19924220673
Other languages
German (de)
Inventor
Johann Dipl.-Ing. Sigl (Fh), 8031 Gilching, De
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Priority to DE19924220673 priority Critical patent/DE4220673C1/en
Application granted granted Critical
Publication of DE4220673C1 publication Critical patent/DE4220673C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/56Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
    • B60S1/58Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows
    • B60S1/583Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows including wiping devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16Means for transmitting drive
    • B60S1/18Means for transmitting drive mechanically
    • B60S1/24Means for transmitting drive mechanically by rotary cranks
    • B60S1/245Means for transmitting drive mechanically by rotary cranks with particular rod arrangements between the motor driven axle and the wiper arm axle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The wiper mechanism is for an automotive windscreen or rear window, having two blades working simultaneously and in opposite directions, offset from each other and driven by a crank mechanism. At the free end of a motor-driven crank (2) is an eccentric pin (3). In the starting position, the motor drive axis (4) is in line on the one hand with that (6) of the pin and that (7) of the joint between the crank rod (5) coupled to this pin and one wiper arm (8); and on the other hand with that (9) of the crank (2) coupled to the second crank rod (10) and that (11) of the joint between this rod and the bell-crank lever (12,13), via which the other wiper arm (17) is driven. USE/ADVANTAGE - Vehicle windscreen wiper in which movement of blades starts simultaneously and in opposite directions.

Description

Die Erfindung betrifft eine Scheibenwischeranlage an der Front- oder Heckschei­ be von Kraftfahrzeugen mit zwei gleichzeitig und gegensinnig drehenden Wi­ scherblättern, die gegeneinander versetzt angeordnet und über ein Kurbelge­ lenkgetriebe angetrieben sind.The invention relates to a windshield wiper system on the front or rear window be of motor vehicles with two Wi rotating simultaneously and in opposite directions blades that are staggered and over a crank steering gear are driven.

Derartige Wischer-Anlagen sind auch als Schmetterlingseinrichtungen bekannt. Bei diesen Einrichtungen wird ein gleichzeitiger und gegensinniger Bewegungs­ beginn der Wischerblätter dadurch erzielt, daß der Antriebsmittelpunkt mit den beiden Wischergestängen eine Linie bilden. Muß aus Platzgründen der Antriebs­ mittelpunkt aus der Verbindungslinie verschoben werden, so ist der oben geschil­ derte Bewegungsablauf nicht mehr gegeben. Diese Notwendigkeit kann sich aber aus Platzgründen, zum Beispiel beim Einbau eines Aggregates in dieser Zone ergeben.Such wiper systems are also known as butterfly devices. With these facilities there is a simultaneous and opposite movement beginning of the wiper blades achieved by the drive center with the form a line between the two wiper linkages. Must be the drive for space reasons If the center point is moved out of the connecting line, then it is the one above more movement no longer exist. This need may arise but for reasons of space, for example when installing a unit in this zone surrender.

Aus der DE 10 82 820 C1 ist ein Kurbelgetriebe für zwei gekuppelte Scheibenwi­ scher eines Kraftfahrzeuges bekannt, wobei der eine Wischerarm beim Auslaufen aus der Ruhestellung dem anderen Wischerarm vorauseilt, die Pendelarme ge­ geneinander verstellbar verbunden sind und die Vorauseilung des einen Wischer­ armes auf etwa den halben Wischbereichswinkel begrenzt ist.DE 10 82 820 C1 is a crank mechanism for two coupled disks shear of a motor vehicle known, the one wiper arm when running from the rest position leads the other wiper arm, the pendulum arms ge are adjustably connected to each other and the advance of a wiper poor is limited to about half the wiping angle.

Eine weitere Scheibenwischereinrichtung zeigt die DE 32 00 780 C3. Sie ist mit ei­ nem Abhebemechanismus, einem Motor, einem Wischerblatt sowie einem mit diesem verbundenen Wischerhebel ausgestattet und mit einem Motorarm, der während des Anlaufs- sowie Wischerbetriebes des Wischerblattes in der einen Richtung und während des Park- sowie Haltevorganges des Wischerblattes in der entgegengesetzten Richtung dreht.Another windshield wiper device is shown in DE 32 00 780 C3. She is with an egg lifting mechanism, a motor, a wiper blade and one with this connected wiper lever and equipped with a motor arm that during the start-up and wiper operation of the wiper blade in one Direction and during the parking and holding process of the wiper blade in the turns in the opposite direction.

Der Erfindung liegt die Aufgabe zugrunde, trotz Verlassens der oben erwähnten Ideallinie einen gleichzeitig und gegensinnigen Bewegungsbeginn der Wischer­ blätter zu erzielen.The invention has for its object, despite leaving the above Ideal line a simultaneous and opposite start of movement of the wiper to achieve leaves.

Dies wird erfindungsgemäß dadurch erreicht, daß in der Wischerausgangslage der Antriebsmittelpunkt des Motors einerseits mit dem Mittelpunkt des mit der Kurbelstange gelenkig verbundenen Exzenterbolzen und mit dem Mittelpunkt des Gelenkes Kurbelstange/Wischerarm und andererseits mit dem Mittelpunkt des Gelenkes Kurbel/Kurbelstange und mit den Mittelpunkten des Gelenkes Kur­ belstange/Winkelhebel eine Gerade bilden. Solcherart ist es möglich, insbesonde­ re wenn Platz für die Unterbringung von Aggregaten geschaffen werden muß, den Wischerantrieb in beliebige Positionen zu verschieben.This is achieved according to the invention in that in the wiper starting position the drive center of the motor on the one hand with the center of the with the  Crank rod articulated eccentric bolt and with the center of the crank rod / wiper arm joint and on the other hand with the center of the crank / crank rod joint and with the center points of the Kur joint form a straight line. In this way it is possible, in particular re if space has to be made for the accommodation of units, to move the wiper drive to any position.

Die Erfindung ist in einem Ausführungsbeispiel dargestellt und beschrieben.The invention is illustrated and described in an exemplary embodiment.

Es zeigen:Show it:

Fig. 1 eine teilschematisierte Vorderansicht einer Scheibenwischeranlage, Fig. 1 is a front view of a windshield wiper system teilschematisierte,

Fig. 2 einen Ausschnitt der Kurbelanordnung, Fig. 2 shows a detail of the crank assembly,

Fig. 3 einen Exzenterbolzen. Fig. 3 shows an eccentric bolt.

Fig. 1 zeigt die an den entsprechenden Wischerarmen befestigten Wischerblätter 1 und 1′. Diese werden von einem Kurbelgetriebe so angetrieben, daß sie einen gleichzeitigen und gegensinnigen Bewegungsbeginn aufweisen. Unterhalb eines unter dem Armaturenbrett liegenden Aggregates ist ein Motor angeordnet, des­ sen Abtriebsmittelpunkt mit 4 bezeichnet wird. Auf dem Motorabtriebszapfen ist eine Kurbel 2 angeordnet, an deren freiem Ende ein Exzenterbolzen 3 vorgese­ hen ist. Der Exzenterbolzen 3 ist in seinem vom Mittelpunkt der Kurbel beabstan­ deten Exzenter gelenkig mit der Kurbelstange 5 verbunden, die anderenends im Mittelpunkt 7 mit dem Wischerarm 8 gelenkig verbunden ist. Auf der linken Seite ist die Kurbel 2 im Drehpunkt 9 des Exzenters 3 bzw. der Kurbel 2 mit der Kur­ belstange 10 gelenkig verbunden, die an ihrem anderen Ende in den Drehpunk­ ten 11 und 11′ mit den Winkelhebeln 12 und 13 gelenkig verbunden ist, die in be­ kannter Anordnung synchronisierend auf den Wischerarm 17 einwirken. Die zur Erzielung eines gleichzeitigen gegensinnigen Bewegungsbeginn notwendige Geometrie ist derart ausgebildet, daß einerseits die Punkte 4, 6 und 7 und ande­ rerseits die Punkte 4, 9, 11 und 11′ je eine Gerade bilden. Fig. 1 shows the wiper blades 1 and 1 'attached to the corresponding wiper arms. These are driven by a crank mechanism so that they have a simultaneous and opposite start of movement. A motor is arranged beneath an assembly lying under the dashboard, the center of its output being denoted by 4 . On the engine output pin, a crank 2 is arranged, at the free end of which an eccentric pin 3 is hen. The eccentric bolt 3 is articulated in its eccentric from the center of the crank to the crank rod 5 , which is articulated at the other end in the center 7 with the wiper arm 8 . On the left side, the crank 2 is articulated at the pivot point 9 of the eccentric 3 or the crank 2 with the cure rod 10 , which at its other end in the pivot points 11 and 11 'is articulated with the angle levers 12 and 13 , act in a known arrangement synchronizing on the wiper arm 17 . The geometry necessary to achieve a simultaneous opposite start of movement is designed such that on the one hand the points 4 , 6 and 7 and on the other hand the points 4 , 9 , 11 and 11 'each form a straight line.

BezugszeichenlisteReference list

 1, 1′ Wischerblätter
 2 Kurbel
 3 Exzenterbolzen
 4 Antriebsmittelpunkt des Motors
 5 Kurbelstange
 6 Mittelpunkt
 7 Mittelpunkt
 8 Wischerarm
 9 Mittelpunkt
10 Kurbelstange
11 Mittelpunkt
12 Winkelhebel
13 Winkelhebel
14 Gerade
15 Gerade
16 Aggregat 17 Wischerarm
1, 1 ′ wiper blades
2 crank
3 eccentric bolts
4 Drive center of the motor
5 crank rod
6 center point
7 center point
8 wiper arm
9 center point
10 crank rod
11 center point
12 angle levers
13 angle lever
14 straight
15 straight
16 unit 17 wiper arm

Claims (1)

Scheibenwischeranlage an der Front- oder Heckscheibe von Kraftfahrzeugen mit zwei gleichzeitig und gegensinnig drehenden Wischerblättern, die gegeneinan­ der versetzt angeordnet und über ein Kurbelgelenkgetriebe angetrieben sind, dadurch gekennzeichnet, daß am freien Ende einer von einem Motor angetriebe­ nen Kurbel (2) ein Exzenterbolzen (3) derart angeordnet ist, daß in der Wischer­ ausgangslage der Antriebsmittelpunkt (4) des Motors einerseits mit dem Mittel­ punkt (6) des mit der Kurbelstange (5) gelenkig verbundenen Exzenterbolzens (3) und mit dem Mittelpunkt (7) des Gelenkes Kurbelstange (5)/Wischerarm (8) und andererseits mit dem Mittelpunkt (9) des Gelenkes Kurbel (2)/Kurbelstange (10) und mit den Mittelpunkten (11, 11′) des Gelenkes Kurbelstange (10)/Winkel­ hebel (12, 13) je eine Gerade (14, 15) bilden.Windshield wiper system on the front or rear window of motor vehicles with two simultaneously and counter-rotating wiper blades, which are arranged offset against each other and are driven by a crank joint gear, characterized in that at the free end of a crank driven by a motor ( 2 ) an eccentric bolt ( 3 ) is arranged such that in the wiper starting position, the drive center ( 4 ) of the engine on the one hand with the center point ( 6 ) of the eccentric bolt ( 3 ) articulated with the crank rod ( 5 ) and with the center point ( 7 ) of the crank rod joint ( 5 ) / Wiper arm ( 8 ) and on the other hand with the center ( 9 ) of the joint crank ( 2 ) / crank rod ( 10 ) and with the center points ( 11 , 11 ') of the joint crank rod ( 10 ) / angle lever ( 12 , 13 ) each form a straight line ( 14 , 15 ).
DE19924220673 1992-06-24 1992-06-24 Automotive windscreen-wiper mechanism with crank-driven blades working opposite ways - in starting position has motor axis in line with joints on crank wiper arm and bell-crank lever Expired - Fee Related DE4220673C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924220673 DE4220673C1 (en) 1992-06-24 1992-06-24 Automotive windscreen-wiper mechanism with crank-driven blades working opposite ways - in starting position has motor axis in line with joints on crank wiper arm and bell-crank lever

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924220673 DE4220673C1 (en) 1992-06-24 1992-06-24 Automotive windscreen-wiper mechanism with crank-driven blades working opposite ways - in starting position has motor axis in line with joints on crank wiper arm and bell-crank lever

Publications (1)

Publication Number Publication Date
DE4220673C1 true DE4220673C1 (en) 1993-09-02

Family

ID=6461723

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924220673 Expired - Fee Related DE4220673C1 (en) 1992-06-24 1992-06-24 Automotive windscreen-wiper mechanism with crank-driven blades working opposite ways - in starting position has motor axis in line with joints on crank wiper arm and bell-crank lever

Country Status (1)

Country Link
DE (1) DE4220673C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034087A1 (en) 1998-12-10 2000-06-15 Volkswagen Aktiengesellschaft Windscreen wiper system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034087A1 (en) 1998-12-10 2000-06-15 Volkswagen Aktiengesellschaft Windscreen wiper system

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee