DE4442529A1 - Wiper blade with constant radius of curvature for windscreen of vehicle - Google Patents

Wiper blade with constant radius of curvature for windscreen of vehicle

Info

Publication number
DE4442529A1
DE4442529A1 DE19944442529 DE4442529A DE4442529A1 DE 4442529 A1 DE4442529 A1 DE 4442529A1 DE 19944442529 DE19944442529 DE 19944442529 DE 4442529 A DE4442529 A DE 4442529A DE 4442529 A1 DE4442529 A1 DE 4442529A1
Authority
DE
Germany
Prior art keywords
wiper
profile
curvature
wiper blade
hollow profile
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.)
Granted
Application number
DE19944442529
Other languages
German (de)
Other versions
DE4442529C2 (en
Inventor
Gunter Siegel
Alfred Dipl Ing Ott
Michael Dipl Ing Kelz
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.)
Mercedes Benz Group AG
Original Assignee
Daimler Benz AG
Mercedes Benz 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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Priority to DE19944442529 priority Critical patent/DE4442529C2/en
Publication of DE4442529A1 publication Critical patent/DE4442529A1/en
Application granted granted Critical
Publication of DE4442529C2 publication Critical patent/DE4442529C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/38—Wiper blades
    • 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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/38—Wiper blades
    • B60S2001/3812—Means of supporting or holding the squeegee or blade rubber
    • B60S2001/3817—Means of supporting or holding the squeegee or blade rubber chacterised by a backing strip to aid mounting of squeegee in support
    • B60S2001/3818—Means of supporting or holding the squeegee or blade rubber chacterised by a backing strip to aid mounting of squeegee in support the backing strip being a channel-like element, e.g. not continuous
    • 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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/38—Wiper blades
    • B60S2001/3827—Wiper blades characterised by the squeegee or blade rubber or wiping element
    • B60S2001/3829—Wiper blades characterised by the squeegee or blade rubber or wiping element characterised by the material of the squeegee or coating thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Window Of Vehicle (AREA)

Abstract

The blade has an elastic profile and a support for the wiper which has a rigid, U-shaped hollow profile (2). The wiper profile (3) is pushed in from an end so that the hollow profile of the blade curvature is identical to the radius of curvature of the windscreen.The free cross section of the hollow profile fits onto the support cross section (6) of the elastic wiper profile. The wiping lip (8) is kept in constant contact with the windscreen.

Description

Die Erfindung betrifft ein Wischblatt mit einem elastischen Wischprofil und einem Wischprofilträger für einen Scheiben­ wischer zum Wischen einer Scheibe mit konstantem Krümmungs­ radius.The invention relates to a wiper blade with an elastic Wiping profile and a wiping profile carrier for one pane wiper for wiping a pane with constant curvature radius.

Wischblätter für Scheibenwischer von Kraftfahrzeugen sind be­ kannt. Dabei ist ein Wischgummiprofil in einem Wischprofilträger gehalten, der unter Zwischenschaltung entsprechender Federele­ mente an einen Wischerarm des Scheibenwischers angebunden ist.Wiper blades for windshield wipers of motor vehicles are knows. There is a wiper rubber profile in a wiper profile carrier held, with the interposition of appropriate Federele is connected to a wiper arm of the windscreen wiper.

Aufgabe der Erfindung ist es, ein Wischblatt der eingangs ge­ nannten Art zu schaffen, das bei guter Wischqualität einen ver­ ringerten Verschleiß aufweist.The object of the invention is to provide a wiper blade of the beginning to create named type that with a good wiping quality ver has reduced wear.

Diese Aufgabe wird dadurch gelöst, daß als Wischprofilträger ein steifes, im wesentlichen U-förmiges Hohlprofil vorgesehen ist, in das das elastische Wischprofil von einer Stirnseite her ein­ geschoben ist, wobei das Hohlprofil des Wischblattes eine mit dem Krümmungsradius der Scheibe identische Krümmung aufweist. Dadurch ist das Wischblatt gegenüber herkömmlichen Wischblättern in seiner Herstellung wesentlich vereinfacht. Da die Krümmung des Hohlprofils und damit des Wischprofils mit dem Krümmungsra­ dius der Scheibe identisch ist, wird auf jedem Wischsegment der Scheibe eine gute Wischwirkung erzielt. Durch das Einschieben des Wischprofiles in das Hohlprofil ergibt sich eine verringerte Bauhöhe und damit auch ein verringertes Gewicht des Wischblat­ tes. Somit weist das Wischblatt eine verringerte Schwungmasse auf. Diese Vorteile sind die Voraussetzungen für gewichtsredu­ zierte Antriebselemente und Halterungen des Scheibenwischers.This object is achieved in that a wiper profile carrier stiff, essentially U-shaped hollow profile is provided, in which the elastic wiping profile from one end is pushed, the hollow profile of the wiper blade having a the curvature radius of the disc has identical curvature. This makes the wiper blade different from conventional wiper blades significantly simplified in its manufacture. Because the curvature the hollow profile and thus the wiping profile with the curvature dius the window is identical, the on each wiping segment Disc achieves a good wiping effect. By pushing it in the wiping profile in the hollow profile results in a reduced Construction height and thus a reduced weight of the wiper blade tes. The wiper blade thus has a reduced flywheel mass  on. These advantages are the prerequisites for weight reduction graced drive elements and windshield wiper brackets.

In Ausgestaltung der Erfindung ist der freie Querschnitt des Hohlprofils an den Trägerquerschnitt des elastischen Wischpro­ fils angepaßt. Durch die Einpassung des Wischprofils in das Hohlprofil ergibt sich eine weiter verringerte Bauhöhe, die aus­ schließlich durch den Trägerquerschnitt des elastischen Wischprofils gebildet wird.In an embodiment of the invention, the free cross section of the Hollow profile on the cross section of the elastic wiping pro adapted fils. By fitting the wiping profile into the Hollow profile results in a further reduced overall height finally through the cross section of the elastic Wiping profile is formed.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels der Erfindung, das anhand der Zeichnungen dargestellt ist.Further advantages and features of the invention result from the following description of an embodiment of the Invention, which is illustrated with reference to the drawings.

Fig. 1 zeigt eine Seitenansicht einer Ausführungsform eines er­ findungsgemäßen Wischblattes und Fig. 1 shows a side view of an embodiment of an inventive wiper blade and

Fig. 2 einen Querschnitt durch das Wischblatt nach Fig. 1 ent­ lang der Schnittlinie II-II in Fig. 1. FIG. 2 shows a cross section through the wiper blade according to FIG. 1 along section line II-II in FIG. 1.

Ein Wischblatt (1) nach den Fig. 1 und 2 dient zum Wischen einer Windschutzscheibe für ein Kraftfahrzeug in Form eines Kugelseg­ mentes, d. h. mit konstantem Krümmungsradius. Das Wischblatt (1) weist einen Wischprofilträger (2) in Form eines U-ähnlichen Hohlprofils auf, das aus einem steifen Material, insbesondere Metall oder Kunststoff hergestellt ist. Das steife Hohlprofil (2) ist über seine gesamte Länge gleichmäßig gekrümmt, wobei seine Krümmung mit dem Krümmungsradius der Windschutzscheibe identisch ist. Das U-artige Hohlprofil (2) ist zu seiner Unter­ seite hin offen und weist an seinen beiden Schenkeln zwei waag­ recht nach innen abragende Stege (5) auf, die aufeinanderzuwei­ sen. Diese Stege (5) dienen als Haltestege für ein Wischgummi­ profil (3), dessen Länge der Länge des Hohlprofils (2) ent­ spricht. Der Wischprofilträger (2) ist starr an einem Wischarm des Scheibenwischers angeordnet, der um eine entlang einer Ra­ dialen zum Krümmungsmittelpunkt ausgerichtete Wischachse schwenkbar angeordnet ist. Zur Veränderung des Anpreßdruckes des Wischblatts auf die Scheibe ist der Wischarm axial federbelastet verstellbar gehalten. Bei einem besonders einfachen Ausführungs­ beispiel sind Wischarm und Wischblatt ein einstückiges Bauteil.A wiper blade ( 1 ) according to FIGS . 1 and 2 is used for wiping a windshield for a motor vehicle in the form of a Kugelseg element, ie with a constant radius of curvature. The wiper blade ( 1 ) has a wiper profile carrier ( 2 ) in the form of a U-like hollow profile, which is made of a rigid material, in particular metal or plastic. The rigid hollow profile ( 2 ) is curved evenly over its entire length, its curvature being identical to the radius of curvature of the windshield. The U-like hollow profile ( 2 ) is open on its underside and has two horizontally inwardly projecting webs ( 5 ) on its two legs, which face each other. These webs ( 5 ) serve as holding webs for a squeegee profile ( 3 ), the length of which corresponds to the length of the hollow profile ( 2 ). The wiper profile carrier ( 2 ) is rigidly arranged on a wiper arm of the windshield wiper, which is arranged pivotably about a wipe axis aligned along a radial axis to the center of curvature. In order to change the contact pressure of the wiper blade on the window, the wiper arm is kept axially spring-loaded adjustable. In a particularly simple embodiment example, the wiper arm and wiper blade are a one-piece component.

Das elastische Wischgummiprofil (3) weist einen länglichen Grundkörper (6) auf, dessen Querschnitt rechteckig ist und des­ sen Dimensionen derart an den Hohlraum des Hohlprofiles (2) an­ gepaßt sind, daß der Grundkörper (6) in das Hohlprofil (2) ein­ schiebbar und kraftschlüssig sowie durch die Stege (5) form­ schlüssig in diesem gehalten ist. Von dem Grundkörper (6) aus ragt ein Verbindungssteg (7) nach unten, an dessen unteren Ende eine mit einem dreieckartigen Querschnitt versehene Wischlippe (8) angeordnet ist. Der Verbindungssteg (7) ist im Vergleich zu dem Grundkörper (6) und der Wischlippe (8) relativ dünn gestal­ tet und gestattet so die elastische Hin- und Herbeweglichkeit der Wischlippe (8).The elastic wiper rubber profile ( 3 ) has an elongated base body ( 6 ), the cross section of which is rectangular and its dimensions are so matched to the cavity of the hollow profile ( 2 ) that the base body ( 6 ) can be pushed into the hollow profile ( 2 ) and is held positively and positively by the webs ( 5 ). A connecting web ( 7 ) projects downward from the base body ( 6 ), at the lower end of which a wiper lip ( 8 ) with a triangular cross section is arranged. The connecting web (7) is relatively thin tet decor with dark in comparison with the basic body (6) and the wiper lip (8) and so allows the resilient way Herbeweglichkeit the wiper lip (8).

Zur Montage des Wischgummiprofiles (3) in dem Hohlprofil (2) wird das Wischgummiprofil (3) in einfacher Weise von einer der beiden offenen Stirnseiten (4) des Hohlprofiles (2) her längs in dieses eingeschoben, bis die Stirnkanten des Wischgummiprofiles (3) und des Hohlprofiles (2) miteinander bündig abschließen.To mount the wiper blade rubber profile (3) in the hollow profile (2), the wiper rubber profile (3) is the forth longitudinally inserted in a simple manner by one of the two open end faces (4) the hollow section (2) in this until the end edges of the blade rubber profile (3) and the hollow profile ( 2 ) flush with each other.

Aufgrund der hohen Steifigkeit des Hohlprofils (2) und der an den Krümmungsradius der Windschutzscheibe angepaßten Krümmung wird die Wischlippe (8) durch das Wischblatt (1) über ihre ge­ samte Länge gleichmäßig gegen die Windschutzscheibe gedrückt, sobald das Wischblatt (1) wie vorstehend beschrieben an einem Wischarm eines Scheibenwischers befestigt ist. Durch die Aus­ richtung der Wischachse des Wischarmes entlang einer Radialen zum Krümmungsmittelpunkt der Windschutzscheibe wird eine gleich­ mäßige Wischqualität erzielt.Due to the high rigidity of the hollow profile ( 2 ) and the curvature adapted to the radius of curvature of the windshield, the wiper lip ( 8 ) is pressed evenly against the windshield over its entire length by the wiper blade ( 1 ) as soon as the wiper blade ( 1 ) as described above is attached to a wiper arm of a wiper. By aligning the wiper axis of the wiper arm along a radial to the center of curvature of the windshield, a uniform wiping quality is achieved.

Claims (2)

1. Wischblatt mit einem elastischen Wischprofil und einem Wischprofilträger für einen Scheibenwischer zum Wischen einer Scheibe eines Kraftfahrzeugs mit konstantem Krümmungsradius, dadurch gekennzeichnet, daß als Wischprofilträger ein steifes, im wesentlichen U-för­ miges Hohlprofil (2) vorgesehen ist, in das das elastische Wischprofil (3) von einer Stirnseite (4) her eingeschoben ist, wobei das Hohlprofil (2) des Wischblattes (1) eine mit dem Krüm­ mungsradius der Scheibe identische Krümmung aufweist.1. Wiper blade with an elastic wiper profile and a wiper profile carrier for a wiper for wiping a window of a motor vehicle with a constant radius of curvature, characterized in that a rigid, substantially U-shaped hollow profile ( 2 ) is provided as the wiper profile carrier, into which the elastic wiper profile ( 3 ) is pushed in from one end face ( 4 ), the hollow profile ( 2 ) of the wiper blade ( 1 ) having an identical curvature to the radius of curvature of the window. 2. Wischblatt nach Anspruch 1, dadurch gekennzeichnet, daß der freie Querschnitt des Hohlprofils (2) an einen Träger­ querschnitt (6) des elastischen Wischprofils (3) angepaßt ist.2. Wiper blade according to claim 1, characterized in that the free cross section of the hollow profile ( 2 ) on a carrier cross section ( 6 ) of the elastic wiper profile ( 3 ) is adapted.
DE19944442529 1994-11-30 1994-11-30 Wiper blade for a wiper for wiping a window with a constant radius of curvature Expired - Fee Related DE4442529C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944442529 DE4442529C2 (en) 1994-11-30 1994-11-30 Wiper blade for a wiper for wiping a window with a constant radius of curvature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944442529 DE4442529C2 (en) 1994-11-30 1994-11-30 Wiper blade for a wiper for wiping a window with a constant radius of curvature

Publications (2)

Publication Number Publication Date
DE4442529A1 true DE4442529A1 (en) 1996-06-05
DE4442529C2 DE4442529C2 (en) 1997-07-03

Family

ID=6534486

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944442529 Expired - Fee Related DE4442529C2 (en) 1994-11-30 1994-11-30 Wiper blade for a wiper for wiping a window with a constant radius of curvature

Country Status (1)

Country Link
DE (1) DE4442529C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011732A1 (en) 2007-03-10 2008-09-11 Volkswagen Ag Wiper blade for a windshield wiper
EP2599671A3 (en) * 2011-11-30 2017-11-08 Robert Bosch Gmbh Wiper blade

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330271A1 (en) * 1973-06-14 1975-01-09 Clayson Nv HEIGHT COMPENSATION DEVICE FOR ONE UNIT

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330271A1 (en) * 1973-06-14 1975-01-09 Clayson Nv HEIGHT COMPENSATION DEVICE FOR ONE UNIT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011732A1 (en) 2007-03-10 2008-09-11 Volkswagen Ag Wiper blade for a windshield wiper
EP1970268A2 (en) 2007-03-10 2008-09-17 Volkswagen Wiper blade for a windscreen wiper
EP2599671A3 (en) * 2011-11-30 2017-11-08 Robert Bosch Gmbh Wiper blade

Also Published As

Publication number Publication date
DE4442529C2 (en) 1997-07-03

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART,

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE

8339 Ceased/non-payment of the annual fee