EP1257447A1 - Wiper blade for cleaning glass surfaces on motor vehicles - Google Patents

Wiper blade for cleaning glass surfaces on motor vehicles

Info

Publication number
EP1257447A1
EP1257447A1 EP01923590A EP01923590A EP1257447A1 EP 1257447 A1 EP1257447 A1 EP 1257447A1 EP 01923590 A EP01923590 A EP 01923590A EP 01923590 A EP01923590 A EP 01923590A EP 1257447 A1 EP1257447 A1 EP 1257447A1
Authority
EP
European Patent Office
Prior art keywords
wiper blade
wiper
curvature
section
blade
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Withdrawn
Application number
EP01923590A
Other languages
German (de)
French (fr)
Inventor
Bruno Egner-Walter
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.)
Valeo Wischersysteme GmbH
Original Assignee
Valeo Wischersysteme 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 Valeo Wischersysteme GmbH filed Critical Valeo Wischersysteme GmbH
Publication of EP1257447A1 publication Critical patent/EP1257447A1/en
Withdrawn legal-status Critical Current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
    • B60S1/3848—Flat-type wiper blade, i.e. without harness
    • B60S1/3849—Connectors therefor; Connection to wiper arm; Attached to blade
    • B60S1/3865—Connectors having an integral pivot pin for connection with the wiper arm
    • B60S1/3867—Connectors having an integral pivot pin for connection with the wiper arm pin formed on the interior of side walls
    • 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
    • B60S2001/382—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 an essentially planar reinforcing strip, e.g. vertebra

Definitions

  • the invention relates to a wiper blade according to the preamble of claim 1.
  • Wiper blades for cleaning windows on motor vehicles are known in a wide variety of designs and essentially consist of a wiper strip extending in the longitudinal direction of the wiper blade made of a rubber-elastic material and of at least one support or spring rail. It is in particular also known (for example DE 198 02 451) to shape or curve the at least one spring rail, which is made from spring steel, so that the wiper blade as a whole also has a curvature in the longitudinal direction, specifically on the underside of the wiper blade which lies against the pane to be cleaned, a concave curvature and a convex curvature on the top. In known wiper blades, however, this curvature is symmetrical to the center of the wiper blade. Due to the curvature achieved that the wiper blade ends rest with sufficient spring force against the window to be cleaned. However, it has been shown that with various known disc shapes with this known design, satisfactory wiping results are not possible.
  • the object of the present invention is to show a wiper blade which enables an improved wiping result with the least possible design effort.
  • a wiper blade is designed according to claim 1.
  • the wiper blade according to the invention has a different curvature on both sides of the connecting element or adapter with which the wiper blade can be connected to the arm of a windshield wiper, the distance of the two wiper blade ends from a cross-sectional plane on the connecting element or connecting region being possible at a first Execution is the same and different for a second possible execution.
  • the distance of the wiper blade end from the aforementioned cross-sectional plane is then, for example, in the wiper blade section that has the greater curvature, i.e. has the smaller radius of curvature, smaller than in the other wiper blade section.
  • FIGS. 1 and 2 each in a simplified representation and in side view two possible embodiments of the wiper blade according to the invention.
  • Fig. 3 in a simplified representation a top view of a further possible embodiment of the wiper blade according to the invention.
  • the wiper blade designated by 1 in FIG. 1 consists in a known manner of an elongated wiper strip 2 which is made of a rubber-elastic material, for example by Injection molding, pressing or is produced as a profile material, and from the support or spring rail 3, which is made of a resilient flat material, preferably spring steel or spring band steel and, like the wiper strip 2, extends over the entire length of the wiper blade 1.
  • the spring rail 3 is provided on the top of the flat wiper strip 2 and connected to it in a suitable manner, for example by gluing.
  • the wiper strip 2 forms in a known manner on its underside a wiper lip 5 with which it bears against the vehicle window pane to be cleaned when the wiper blade 1 is used.
  • end pieces 8 are attached, which there fasten the two spring rails to one another and advantageously cover at least the sharp corners of the wiper strip 2.
  • a holder or adapter 9 is provided as a connecting element on the upper side of the wiper blade 1 facing away from the wiper lip 5, which is connected to the spring rail 3 in a suitable manner, for example by spot welding, and via which the wiper blade 1 has the end a wiper arm 10 of a windshield wiper, only shown schematically.
  • the adapter 9 is provided for this purpose with a connecting bolt 11 which lies with its axis perpendicular to a central plane M (FIG. 3) arranged parallel to the drawing plane in FIG. 1, in which the longitudinal extension L of the wiper blade 1 is also arranged and to which, for example, the wiper blade 1 and the wiper strip 2 are designed symmetrically in cross section.
  • the wiper blade 1 is on the top, ie in the area of the spring rail 3 and also on the bottom, ie curved in the area of the wiper lip 5, namely convex on the top and concave on the bottom.
  • E in FIG. 1 indicates a cross-sectional plane running perpendicular to the drawing plane of this figure, in which the axis of the connecting bolt 11 also lies and which runs perpendicular to the tangent to the curvature of the wiper blade 1 in the region of the adapter 9.
  • XI and X2 denote the distances that end 6 and 7 have from plane E. With wiper blade 1, these distances XI and X2 are the same size. However, as FIG. 1 shows, the curvature of the wiper blade 1 shown in this figure in the relaxed state is weaker in one wiper blade section 1 'between the end 6 and the plane E, ie the radius of curvature is greater there than in the other wiper blade section 1'' between the plane E and the end 7.
  • the wiper blade section 1 ′′ thus has a greater curvature or a smaller radius of curvature than the wiper blade section 1 ′ at least in a partial region. As can also be seen from FIG.
  • the wiper blade section 1 ′′ actually has a somewhat longer length than the wiper blade section 1 ′ because of this greater curvature despite the same distance XI and X2 from the plane E. Due to the different curvature in the wiper blade sections 1 'and 1''it is achieved that these portions and, in particular, the ends 6 and 7 despite the usual curvature of the disc in this rest resiliently so that an optimal cleaning is achieved ⁇ or wiping result ,
  • FIG. 2 shows, in a representation like FIG. 1, a wiper blade 1 a as a further possible embodiment inter alia has the wiper strip 2 and the spring rail 3a and differs from the wiper blade 1 in particular in that the distances XI and X2, which the ends 6 and 7 have from the plane E of the adapter 9, are different, that is to say the adapter 9 is off-center is provided.
  • FIG. 3 shows a further possible embodiment of a wiper blade 1b in a top view of the top.
  • the middle plane M already mentioned above and the plane E of the adapter 9 are also shown in FIG. 3. Both planes are perpendicular to one another and perpendicular to the plane of the drawing in FIG. 3.
  • the spring rail 3b has a width which decreases in the longitudinal direction L of the wiper blade with increasing distance from the plane E, specifically from a maximum width in the region of the adapter 9 to a smaller width at the respective end 6 or 7.
  • the spring rail 3b has a smaller width at the end 6 than at the end 7.
  • the spring rail 3b is formed symmetrically to the center plane M. Furthermore, both ends have the same distance from the plane E, so that the wiper blade 1b corresponds in this respect to the wiper blade 1.
  • the respective spring rail 3, 3a or 3b to the respective wiper strip 2 in another suitable manner, for example in that the Wiper strip 2 is formed on the spring rail.
  • two spring rails instead of one spring rail 3, 3a or 3b, each of which engages in a lateral longitudinal groove of the wiper strip 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Abstract

The invention relates to a wiper blade (1) for cleaning glass surfaces on vehicles, especially motor vehicles. The inventive wiper blade consists of an elongated wiper strip (2) consisting of an elastic rubber material and at least one spring bar (3) that is connected to the wiper strip and is curved in such a way that the wiper strip is provided with a different curvature on both sides (1', 1'') of a connecting element (9) for connecting to a wiper blade arm.

Description

WISCHBLATT ZUM REINIGEN VON SCHEIBEN AN KRAFTFAHRZZEUGENWIPER BLADE FOR CLEANING WINDOWS ON MOTOR VEHICLES
Die Erfindung bezieht sich auf ein Wischblatt gemäß Oberbegriff Patentanspruch 1.The invention relates to a wiper blade according to the preamble of claim 1.
Wischblatter zum Reinigen von Scheiben an Kraftfahrzeugen sind in unterschiedlichsten Ausfuhrungen bekannt und bestehen im wesentlichen aus einer sich in Längsrichtung des Wischblatts erstreckenden Wischleiste aus einem gummielastischen Material sowie aus wenigstens einer Tragoder Federschiene. Es ist hierbei insbesondere auch bekannt (z.B. DE 198 02 451) die aus einem Federbandstahl hergestellte wenigstens eine Federschiene so zu formen bzw. zu wölben, daß auch das Wischblatt als ganzes in Längsrichtung eine Krümmung aufweist, und zwar an der Unterseite des Wischblatts, mit der dieses gegen die zu reinigende Scheibe anliegt, eine konkave Krümmung und an der Oberseite eine konvexe Krümmung. Bei bekannten Wischblattern ist diese Krümmung allerdings symmetrisch zur Mitte des Wischblatts. Durch die Krümmung wird u.a. erreicht, daß auch die Wischblattenden mit ausreichender Federkraft gegen die zu reinigende Scheibe anliegen. Es hat sich jedoch gezeigt, daß bei verschiedenen Scheibenformen mit dieser bekannten Ausbildung keine zufriedenstellende Wischergebnisse möglich sind.Wiper blades for cleaning windows on motor vehicles are known in a wide variety of designs and essentially consist of a wiper strip extending in the longitudinal direction of the wiper blade made of a rubber-elastic material and of at least one support or spring rail. It is in particular also known (for example DE 198 02 451) to shape or curve the at least one spring rail, which is made from spring steel, so that the wiper blade as a whole also has a curvature in the longitudinal direction, specifically on the underside of the wiper blade which lies against the pane to be cleaned, a concave curvature and a convex curvature on the top. In known wiper blades, however, this curvature is symmetrical to the center of the wiper blade. Due to the curvature achieved that the wiper blade ends rest with sufficient spring force against the window to be cleaned. However, it has been shown that with various known disc shapes with this known design, satisfactory wiping results are not possible.
Bekannt ist weiterhin auch (DE 12 47 161) symmetrisch zur Mitte gewölbte Federschienen so auszuführen, daß sie einen sich mit zunehmenden Abstand von der Federschienenmitte reduzierenden Querschnitt aufweisen.It is also known (DE 12 47 161) to design spring rails curved symmetrically to the center in such a way that they have a cross section which decreases with increasing distance from the center of the spring rails.
BESTATIGUNGSKOPIE Aufgabe der vorliegenden Erfindung ist es, eine Wischblatt aufzuzeigen, welches bei einem geringst möglichen konstruktiven Aufwand ein verbessertes Wischergebnis ermöglicht. Zur Losung dieser Aufgabe ist ein Wischblatt entsprechend dem Patentanspruch 1 ausgebildet.BESTATIGUNGSKOPIE The object of the present invention is to show a wiper blade which enables an improved wiping result with the least possible design effort. To solve this problem, a wiper blade is designed according to claim 1.
Das erfindungsgemaße Wischblatt besitzt beidseitig von dem Verbindungselement bzw. Adapter, mit dem das Wischblatt mit dem Arm eines Scheibenwischers verbindbar ist, zumindest auf einer Teillange eine unterschiedliche Krümmung, wobei der Abstand der beiden Wischblattenden von einer Querschnittsebene am Verbindungselement bzw. Verbindungsbereich bei einer ersten möglichen Ausfuhrung gleich ist und bei einer zweiten, möglichen Ausfuhrung unterschiedlich. Der Abstand des Wischblattendes von der vorgenannten Querschnittsebene ist dann beispielsweise bei demjenigen Wischblattabschnitt, der die stärkere Krümmung, d.h. den kleineren Krümmungsradius aufweist, kleiner als bei dem anderen Wischblattabschnitt.The wiper blade according to the invention has a different curvature on both sides of the connecting element or adapter with which the wiper blade can be connected to the arm of a windshield wiper, the distance of the two wiper blade ends from a cross-sectional plane on the connecting element or connecting region being possible at a first Execution is the same and different for a second possible execution. The distance of the wiper blade end from the aforementioned cross-sectional plane is then, for example, in the wiper blade section that has the greater curvature, i.e. has the smaller radius of curvature, smaller than in the other wiper blade section.
Weiterbildungen der Erfindung sind Gegenstand der Unteranspruche . Die Erfindung wird im Folgenden anhand der Figuren an Ausfuhrungsbeispielen naher erläutert. Es zeigen:Developments of the invention are the subject of the dependent claims. The invention is explained in more detail below with reference to the figures using exemplary embodiments. Show it:
Fig. 1 und 2 jeweils in vereinfachter Darstellung und in Seitenansicht zwei mögliche Ausfuhrungsformen des erfindungsgemäßen Wischblatts;Figures 1 and 2 each in a simplified representation and in side view two possible embodiments of the wiper blade according to the invention.
Fig. 3 in vereinfachter Darstellung eine Draufsicht auf eine weitere mögliche Ausfuhrungsform des erfindungsgemaßen Wischblatts .Fig. 3 in a simplified representation a top view of a further possible embodiment of the wiper blade according to the invention.
Das in der Figur 1 mit 1 bezeichnete Wischblatt besteht in bekannter Weise aus einer langgestreckten Wischleiste 2, die aus einem gummielastischen Material, beispielsweise durch Spritzgießen, Pressen oder als Profilmaterial hergestellt ist, sowie aus der Trag- oder Federschiene 3, die aus einem federnden Flachmaterial, vorzugsweise aus Federstahl oder Federbandstahl gefertigt ist und sich ebenso wie die Wischleiste 2 über die gesamte Länge des Wischblatts 1 erstreckt. Bei der dargestellten Ausführungsform ist die Federschiene 3 an der Oberseite der flachen Wischleiste 2 vorgesehen und mit dieser in geeigneter Weise, beispielsweise durch Verkleben verbunden. Die Wischleiste 2 bildet in bekannter Weise an ihrer Unterseite eine Wischlippe 5, mit der sie im Verwendungsfall des Wischblatts 1 gegen die zu reinigende Fahrzeugscheibe anliegt.The wiper blade designated by 1 in FIG. 1 consists in a known manner of an elongated wiper strip 2 which is made of a rubber-elastic material, for example by Injection molding, pressing or is produced as a profile material, and from the support or spring rail 3, which is made of a resilient flat material, preferably spring steel or spring band steel and, like the wiper strip 2, extends over the entire length of the wiper blade 1. In the illustrated embodiment, the spring rail 3 is provided on the top of the flat wiper strip 2 and connected to it in a suitable manner, for example by gluing. The wiper strip 2 forms in a known manner on its underside a wiper lip 5 with which it bears against the vehicle window pane to be cleaned when the wiper blade 1 is used.
An den beiden Enden 6 und 7 des Wischblatts 1 sind bei der dargestellten Ausführungsform Abschlußstücke 8 angebracht, die dort die beiden Federschienen aneinander befestigen und vorteilhafterweise zumindest die scharfen Ecken der Wischleiste 2 abdecken. Zwischen den beiden Enden 6 und 7 ist an der der Wischlippe 5 abgewandten Oberseite des Wischblatts 1 als Verbindungselement ein Halter oder Adapter 9 vorgesehen, der mit der Federschiene 3 in geeigneter Weise, beispielsweise durch Punktschweißen verbunden ist und über den das Wischblatt 1 mit dem Ende eines nur schematisch dargestellten Wischarms 10 eines Scheibenwischers verbunden ist. Bei der dargestellten Ausführungsform ist der Adapter 9 hierfür mit einem Verbindungsbolzen 11 versehen, der mit seiner Achse senkrecht zu einer parallel zur Zeichenebene der Figur 1 angeordneten Mittelebene M (Fig. 3) liegt, in der auch die Längserstreckung L des Wischblatts 1 angeordnet ist und zu der beispielsweise das Wischblatt 1 sowie die Wischleiste 2 im Querschnitt symmetrisch ausgeführt sind.At the two ends 6 and 7 of the wiper blade 1 in the illustrated embodiment, end pieces 8 are attached, which there fasten the two spring rails to one another and advantageously cover at least the sharp corners of the wiper strip 2. Between the two ends 6 and 7, a holder or adapter 9 is provided as a connecting element on the upper side of the wiper blade 1 facing away from the wiper lip 5, which is connected to the spring rail 3 in a suitable manner, for example by spot welding, and via which the wiper blade 1 has the end a wiper arm 10 of a windshield wiper, only shown schematically. In the embodiment shown, the adapter 9 is provided for this purpose with a connecting bolt 11 which lies with its axis perpendicular to a central plane M (FIG. 3) arranged parallel to the drawing plane in FIG. 1, in which the longitudinal extension L of the wiper blade 1 is also arranged and to which, for example, the wiper blade 1 and the wiper strip 2 are designed symmetrically in cross section.
Wie die Figur 1 zeigt, ist das Wischblatt 1 an der Oberseite, d.h. im Bereich der Federschiene 3 sowie auch an der Unterseite, d.h. im Bereich der Wischlippe 5 gekrümmt, und zwar an der Oberseite konvex und an der Unterseite konkav.As FIG. 1 shows, the wiper blade 1 is on the top, ie in the area of the spring rail 3 and also on the bottom, ie curved in the area of the wiper lip 5, namely convex on the top and concave on the bottom.
Mit E ist in der Figur 1 eine senkrecht zur Zeichenebene dieser Figur verlaufende Querschittsebene angedeutet, in der auch die Achse des Verbindungsbolzens 11 liegt und die senkrecht zur Tangente der Krümmung des Wischblatts 1 im Bereich des Adapters 9 verlauft.E in FIG. 1 indicates a cross-sectional plane running perpendicular to the drawing plane of this figure, in which the axis of the connecting bolt 11 also lies and which runs perpendicular to the tangent to the curvature of the wiper blade 1 in the region of the adapter 9.
Mit XI und X2 sind in der Figur 1 jeweils die Abstände bezeichnet, die das Ende 6 bzw. 7 von der Ebene E aufweist. Beim Wischblatt 1 sind diese Abstände XI und X2 gleich groß. Wie die Figur 1 aber zeigt, ist die Krümmung des in dieser Figur im entspannten Zustand dargestellten Wischblatts 1 in dem einen Wischblattabschnitt 1 ' zwischen dem Ende 6 und der Ebene E schwacher, d.h. der Krümmungsradius ist dort großer als in dem anderen Wischblattabschnitt 1 ' ' zwischen der Ebene E und dem Ende 7. Der Wischblattabschnitt 1 ' ' besitzt also zumindest in einem Teilbereich eine stärkere Krümmung bzw. einen kleineren Krümmungsradius als der Wischblattabschnitt 1'. Wie aus der Figur 1 weiterhin ersichtlich ist, besitzt der Wischblattabschnitt 1 ' ' wegen dieser stärkeren Krümmung trotz des gleichen Abstandes XI und X2 von der Ebene E tatsachlich eine etwas größere Lange als der Wischblattabschnitt 1'. Durch die unterschiedliche Krümmung in den Wischblattabschnitten 1' und 1 ' ' wird erreicht, daß diese Abschnitte und dabei insbesondere auch die Enden 6 und 7 trotz der üblichen Wölbung der Scheibe an dieser federnd so anliegen, daß ein optimales Reinigungs¬ bzw. Wischergebnis erreicht wird.In FIG. 1, XI and X2 denote the distances that end 6 and 7 have from plane E. With wiper blade 1, these distances XI and X2 are the same size. However, as FIG. 1 shows, the curvature of the wiper blade 1 shown in this figure in the relaxed state is weaker in one wiper blade section 1 'between the end 6 and the plane E, ie the radius of curvature is greater there than in the other wiper blade section 1'' between the plane E and the end 7. The wiper blade section 1 ″ thus has a greater curvature or a smaller radius of curvature than the wiper blade section 1 ′ at least in a partial region. As can also be seen from FIG. 1, the wiper blade section 1 ″ actually has a somewhat longer length than the wiper blade section 1 ′ because of this greater curvature despite the same distance XI and X2 from the plane E. Due to the different curvature in the wiper blade sections 1 'and 1''it is achieved that these portions and, in particular, the ends 6 and 7 despite the usual curvature of the disc in this rest resiliently so that an optimal cleaning is achieved ¬ or wiping result ,
Die Figur 2 zeigt in einer Darstellung wie Figur 1 als weitere mögliche Ausfuhrungsform ein Wischblatt la, welches u.a. die Wischleiste 2 und die Federschiene 3a aufweist und sich von dem Wischblatt 1 insbesondere dadurch unterscheidet, daß die Abstände XI und X2, die die Enden 6 bzw. 7 von der Ebene E des Adapters 9 besitzen, unterschiedlich sind, der Adapter 9 also außermittig vorgesehen ist.FIG. 2 shows, in a representation like FIG. 1, a wiper blade 1 a as a further possible embodiment inter alia has the wiper strip 2 and the spring rail 3a and differs from the wiper blade 1 in particular in that the distances XI and X2, which the ends 6 and 7 have from the plane E of the adapter 9, are different, that is to say the adapter 9 is off-center is provided.
Die Figur 3 zeigt als weitere mögliche Ausfuhrungsform ein Wischblatt 1b in Draufsicht auf die Oberseite. Dargestellt ist in der Figur 3 auch die oben bereits erwähnte Mittelebene M sowie die Ebene E des Adapters 9. Beide Ebenen liegen senkrecht zueinander und senkrecht zur Zeichenebene der Figur 3.FIG. 3 shows a further possible embodiment of a wiper blade 1b in a top view of the top. The middle plane M already mentioned above and the plane E of the adapter 9 are also shown in FIG. 3. Both planes are perpendicular to one another and perpendicular to the plane of the drawing in FIG. 3.
Die Federschiene 3b weist eine Breite auf, die in Wischblattlangsrichtung L mit zunehmendem Abstand von der Ebene E abnimmt, und zwar von einer maximalen Breite im Bereich des Adapters 9 jeweils auf eine kleinere Breite an dem jeweiligen Ende 6 bzw. 7. Bei der dargestellten Ausfuhrungsform besitzt die Federschiene 3b am Ende 6 eine geringere Breite als am Ende 7. Die Federschiene 3b ist aber symmetrisch zur Mittelebene M ausgebildet. Weiterhin besitzen beiden Enden den gleichen Abstand von der Ebene E, so daß das Wischblatt lb insoweit dem Wischblatt 1 entspricht .The spring rail 3b has a width which decreases in the longitudinal direction L of the wiper blade with increasing distance from the plane E, specifically from a maximum width in the region of the adapter 9 to a smaller width at the respective end 6 or 7. In the embodiment shown the spring rail 3b has a smaller width at the end 6 than at the end 7. However, the spring rail 3b is formed symmetrically to the center plane M. Furthermore, both ends have the same distance from the plane E, so that the wiper blade 1b corresponds in this respect to the wiper blade 1.
Die Erfindung wurde voranstehend an Ausfuhrungsbeispielen beschrieben. Es versteht sich, daß zahlreiche nderungen sowie Abwandlungen möglich sind, ohne daß dadurch der der Erfindung zugrundeliegende Erfindungsgedanke verlassen wird.The invention was described above using exemplary embodiments. It goes without saying that numerous changes and modifications are possible without thereby departing from the inventive idea on which the invention is based.
So ist es beispielsweise möglich, die jeweilige Federschiene 3, 3a bzw. 3b auf andere geeignete Weise mit der jeweiligen Wischleiste 2 zu verbinden, beispielsweise dadurch, daß die Wischleiste 2 an die Federschiene angeformt ist. Weiterhin ist es auch möglich, anstelle einer Federschiene 3, 3a bzw. 3b zwei Federschienen vorzusehen, die jeweils in eine seitliche Längsnut der Wischleiste 2 eingreifen. For example, it is possible to connect the respective spring rail 3, 3a or 3b to the respective wiper strip 2 in another suitable manner, for example in that the Wiper strip 2 is formed on the spring rail. Furthermore, it is also possible to provide two spring rails instead of one spring rail 3, 3a or 3b, each of which engages in a lateral longitudinal groove of the wiper strip 2.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1, la, lb Wischblatt1, la, lb wiper blade
1' , i' r Wischblattabschnitt1 ', i' r wiper blade section
2 Wischleiste2 wiper strips
3, 3a, 3b Federschiene3, 3a, 3b spring rail
5 Wischlippe5 wiper lip
6, 7 Ende6, 7 end
8 AbSchlußstuck8 final piece
9 Adapter9 adapters
10 Wischarm10 wiper arm
11 Verbindungsbolzen11 connecting bolts
XI, X2 AbstandXI, X2 distance
L LangserstreckungL longitudinal extension
M MittelebeneM middle plane
E Ebene des Adapters E level of the adapter

Claims

Patentansprüche claims
1. ischblatt zum Reinigen von Scheiben an Fahrzeugen, insbesondere Kraftfahrzeugen, mit einer aus einem gummielastischen Material bestehenden langgestreckten Wischleiste (2), die im Bereich ihrer Unterseite bzw. mit wenigstens einer dort gebildeten Wischlippe (5) an der jeweiligen Scheibe anlegbar und an wenigstens einer sich in Längsrichtung der Wischleiste (2) erstreckenden federnden Tragschiene (3, 3a, 3b) vorgesehen ist, wobei die Tragschiene in einem entspannten Zustand des Wischblatts derart gewölbt ist, daß das Wischblatt in Längsrichtung (L) an seiner Unterseite konkav und an einer der Unterseite abgewandten Oberseite konvex gekrümmt ist, sowie mit einem zwischen zwei Enden (6, 7) des Wischblatts (1, la, lb) vorgesehenen Verbindungselement (9) zum Befestigen des Wischblatts an einem Arm eines Scheibenwischers, dadurch gekennzeichnet, daß die Krümmung des Wischblatts (1, la, lb) oder der Verlauf dieser Krümmung in einem ersten zwischen einem Ende (6) des Wischblatts (1, la, lb) und dem Verbindungselement (9) gebildeten Wischblattabschnitt (1') unterschiedlich von der Krümmung des Wischblatts (1, la, lb) bzw. von dem Verlauf dieser Krümmung in einem zweiten zwischen dem Verbindungselement (9) und dem anderen Ende (7) gebildeten Wischblattabschnitt (1'') ist.1. ischblatt for cleaning windows on vehicles, in particular motor vehicles, with an elongated wiper strip (2) consisting of a rubber-elastic material, which can be placed on the respective pane in the region of its underside or with at least one wiper lip (5) and on at least A resilient support rail (3, 3a, 3b) extending in the longitudinal direction of the wiper strip (2) is provided, the support rail being curved in a relaxed state of the wiper blade in such a way that the wiper blade is concave in the longitudinal direction (L) on its underside and on one the underside facing away from the top is convexly curved, and with a connecting element (9) provided between two ends (6, 7) of the wiper blade (1, la, lb) for fastening the wiper blade to an arm of a windshield wiper, characterized in that the curvature of the Wiper blade (1, la, lb) or the course of this curvature in a first between one end (6) of the wiper blade (1, la, lb) and the connecting element (9) formed wiper blade section (1 ') different from the curvature of the wiper blade (1, la, lb) or from the course of this curvature in a second between the connecting element (9) and the other end ( 7) formed wiper blade section (1 '').
2. ischblatt nach Anspruch 1, dadurch gekennzeichnet, daß der erste Wischblattabschnitt (1') zumindest auf einer Teillange eine Krümmung mit einem Krümmungsradius aufweist, der großer ist als der Krümmungsradius der Krümmung zumindest einer Teillange des zweiten Wischblattabschnitts (1").2. isch blade according to claim 1, characterized in that the first wiper blade section (1 ') has at least on a partial length a curvature with a radius of curvature which is greater than the radius of curvature of the curvature of at least a partial length of the second Wiper blade section (1 ").
3. ischblatt nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der erste Wischblattabschnitt (1') und/oder der zweite Wischblattabschnitt (1'') einen Krummungsverlauf aufweisen, bei dem sich die Krümmung bzw. der Krümmungsradius in Wischblattlangsrichtung andern.3. isch blade according to claim 1 or 2, characterized in that the first wiper blade section (1 ') and / or the second wiper blade section (1' ') have a curvature course in which the curvature or the radius of curvature change in the longitudinal direction of the wiper blade.
4. Wischblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand (XI, X2 ) der beiden Enden (6, 7) des Wischblatts (1, lb) von einer Querschnittsebene (E) des Wischblatts (1) im Bereich des Verbindungselementes (9) gleich ist.4. Wiper blade according to one of the preceding claims, characterized in that the distance (XI, X2) of the two ends (6, 7) of the wiper blade (1, lb) from a cross-sectional plane (E) of the wiper blade (1) in the region of the connecting element (9) is the same.
5. ischblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand (XI, X2 ) der beiden Enden (6, 7) des Wischblatts (1, lb) von einer Querschnittsebene (E) des Wischblatts (1) im Bereich des Verbindungselementes (9) unterschiedlich ist.5. isch blade according to one of the preceding claims, characterized in that the distance (XI, X2) of the two ends (6, 7) of the wiper blade (1, lb) from a cross-sectional plane (E) of the wiper blade (1) in the region of the connecting element (9) is different.
6. ischblatt nach Anspruch 5, dadurch gekennzeichnet, daß das den zweiten Wischblattabschnitt (1'') bildende andere Ende (7) den kleineren Abstand von der Querschnittsebene (E) aufweist.6. isch blade according to claim 5, characterized in that the second wiper blade portion (1 '') forming the other end (7) has the smaller distance from the cross-sectional plane (E).
7. ischblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die wenigstens eine Federschiene (3b) einen sich in Längsrichtung (L) des Wischblatts (lb) ändernden Querschnitt oder eine sich in Längsrichtung des Wischblatts (lb) ändernde Breite auf eist .7. isch blade according to one of the preceding claims, characterized in that the at least one spring rail (3b) has a changing cross-section in the longitudinal direction (L) of the wiper blade (lb) or a width which changes in the longitudinal direction of the wiper blade (lb).
8. ischblatt nach Anspruch 7, dadurch gekennzeichnet, daß der Querschnitt oder die Breite der wenigstens einen Federschiene (3b) von dem Verbindungselement (9) zumindest zu einem Ende (6, 7) der Wischblatts (lb) hin abnimmt.8. ischblatt according to claim 7, characterized in that the cross section or the width of the at least one Spring rail (3b) decreases from the connecting element (9) at least to one end (6, 7) of the wiper blade (1b).
9. ischblatt nach Anspruch 8, dadurch gekennzeichnet, daß der Querschnitt oder die Breite zu beiden Enden (6, 7) hin abnehmen .9. ischblatt according to claim 8, characterized in that the cross section or the width to both ends (6, 7) decrease.
10.Wischblatt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die wenigstens eine Federschiene (3, 3a, 3b) an den Enden (6, 7) des Wischblatts (lb) einen unterschiedlichen Querschnitt oder eine unterschiedliche Breite aufweist. 10. Wiper blade according to one of the preceding claims, characterized in that the at least one spring rail (3, 3a, 3b) at the ends (6, 7) of the wiper blade (lb) has a different cross section or a different width.
EP01923590A 2000-02-21 2001-02-20 Wiper blade for cleaning glass surfaces on motor vehicles Withdrawn EP1257447A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10007810 2000-02-21
DE10007810A DE10007810A1 (en) 2000-02-21 2000-02-21 Wiper blade
PCT/EP2001/001910 WO2001060666A1 (en) 2000-02-21 2001-02-20 Wiper blade for cleaning glass surfaces on motor vehicles

Publications (1)

Publication Number Publication Date
EP1257447A1 true EP1257447A1 (en) 2002-11-20

Family

ID=7631683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01923590A Withdrawn EP1257447A1 (en) 2000-02-21 2001-02-20 Wiper blade for cleaning glass surfaces on motor vehicles

Country Status (7)

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US (1) US20030009842A1 (en)
EP (1) EP1257447A1 (en)
JP (1) JP2003525800A (en)
CN (1) CN1404449A (en)
BR (1) BR0108523A (en)
DE (1) DE10007810A1 (en)
WO (1) WO2001060666A1 (en)

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EP1683695B1 (en) * 2005-01-25 2008-02-27 Federal-Mogul S.A. Windscreen wiper device
US20080028564A1 (en) * 2006-08-04 2008-02-07 Shu-Lan Ku Wiper blade support structure
US8122560B2 (en) * 2006-08-04 2012-02-28 Dongguan Hongyi Wiper Co., Ltd. Windshield wiper bridge base assembly
DE102007057133A1 (en) * 2007-11-28 2009-06-04 Robert Bosch Gmbh Wiper rubber for windscreen wipers
ES2379023T3 (en) * 2008-07-11 2012-04-20 Federal-Mogul S.A. A windshield wiper device
US8533899B2 (en) * 2009-08-27 2013-09-17 Trico Products Corporation Windshield wiper assembly
US9434355B2 (en) 2014-04-01 2016-09-06 Trico Products Corporation Wiper adapter and wiper assembly incorporating the same
US9539987B2 (en) 2014-04-01 2017-01-10 Trico Products Corporation Wiper adapter and wiper assembly incorporating the same

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EP0528643A1 (en) 1991-08-16 1993-02-24 Anglo American Industrial Corporation Limited Windscreen wiper

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EP0528643A1 (en) 1991-08-16 1993-02-24 Anglo American Industrial Corporation Limited Windscreen wiper

Also Published As

Publication number Publication date
WO2001060666A1 (en) 2001-08-23
US20030009842A1 (en) 2003-01-16
DE10007810A1 (en) 2001-08-23
JP2003525800A (en) 2003-09-02
CN1404449A (en) 2003-03-19
BR0108523A (en) 2003-04-15

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