WO2004065187A1 - Wiper arm for a windshield wiper - Google Patents
Wiper arm for a windshield wiper Download PDFInfo
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- WO2004065187A1 WO2004065187A1 PCT/DE2004/000060 DE2004000060W WO2004065187A1 WO 2004065187 A1 WO2004065187 A1 WO 2004065187A1 DE 2004000060 W DE2004000060 W DE 2004000060W WO 2004065187 A1 WO2004065187 A1 WO 2004065187A1
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- wiper
- wiper arm
- rod
- arm
- blade
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- 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
Definitions
- the invention relates to a wiper arm for a windshield wiper, with a fastening part and an associated wiper rod, the free end of which has a connector for a wiper blade.
- Known windshield wipers have a wiper arm which is constructed from a driven fastening part, a joint part connected to the latter via a hinged joint, and a wiper rod rigidly adjoining the joint part. Furthermore, a conventional windshield wiper has a wiper blade articulated on the wiper rod, which consists of a support bracket system and a wiper strip held by the latter. The joint realized on the wiper rod-wiper blade connection guides the wiper blade with the wiper strip, for example, over a motor vehicle window, the joint part and the support bracket system making it possible for the wiper strip to adapt to a curvature of the motor vehicle window.
- a required contact pressure of the wiper strip is usually achieved with at least one tension spring, which braces the fastening part and the joint part together with the wiper rod via the folding joint.
- This relatively complex mechanism also ensures that the articulated part of the windshield wiper can be folded down approximately vertically from the motor vehicle window for cleaning or for mounting a wiper blade.
- brackets of the support bracket system are replaced by a support element, in particular spring rails inserted into the wiper strip, which elastically distributes the contact pressure onto the wiper strip.
- the bracket-free wiper blade can be clipped to the wiper rod, as is known from DE 100 57 253 A1, by clipping one Connector at the free end of the wiper rod with a counter connector on the wiper blade.
- the fastening part and the wiper rod are connected to one another in a rigid manner, that is to say without a hinged joint. It is also provided according to the invention that the wiper rod consists of a resilient material.
- the wiper rod is preferably bent in such a way that the wiper blade lies against a pane under a pretension exerted by the wiper arm.
- the spring wiper arm according to the invention offers considerable design and manufacturing simplification, in particular by eliminating the hinge joint previously used and the tension spring.
- the pre-bent wiper rod or the pre-bent wiper arm there is nevertheless sufficient flexibility and spring force to be able to follow the curvature of the vehicle window.
- its spring properties which can advantageously be achieved by using spring steel, it is possible not to fold the wiper arm up to a position perpendicular to the window, but to fold it at least as far from the vehicle window, more precisely: against the existing one Bending up the preload so that the wiper blade is accessible, especially for assembly purposes.
- connection piece for the wiper blade is designed in such a way that it can be clipped without a joint with a counter-connection piece of a non-iron wiper blade. This opens up the possibility of being able to replace the wiper blade when the wiper arm is folded up, for example, by an angle of only 15 °.
- the invention can also be implemented with particular advantage in that not only the wiper rod, but also the wiper arm as a whole consists of a resilient material, that is to say can be manufactured in one piece.
- Figure 1 is a schematic representation of a known wiper arm and wiper blade consisting of a wiper lever pivotable about a disc;
- FIG. 2 shows a perspective view of a first embodiment of a wiper arm according to the invention
- FIG. 3 shows a top view of the wiper arm according to FIG. 1;
- Figure 4 is a perspective view of a second embodiment of the wiper arm according to the invention.
- FIG. 1 schematically shows a known wiper arm 1, to which a wiper blade 9 is articulated, so that the wiper levers 1 and 9 as a whole take into account the curvature of a vehicle window 10 can be pivoted over this.
- the wiper blade 9 is articulated laterally to the free end of the wiper arm 1 (so-called side-lock system).
- a wiper arm 1 shown in FIG. 2 has a fastening part 2, a wiper rod 3 and a connecting piece 4.
- the wiper rod 3, which is decisively responsible for the resilient properties of the entire wiper arm 1 in this embodiment, preferably consists of spring steel; in principle, however, just as in the embodiment according to FIG. 4, a plastic that has permanently corresponding elastic properties can also be used.
- the wiper arm 1 according to FIG. 2 can accordingly consist of three separate parts, the fastening part 2 and the connecting piece 4 being able, for example, to be produced as a plastic injection onto the wiper rod 3 consisting of spring steel.
- the spring-elastic deflectability of the curved wiper arm 1 with forces acting in the direction of the double arrow in FIG. 2 results from the dotted lines 5 indicated in FIG. 2.
- a possible stroke or deflection angle of the wiper arm 1 with respect to the window of approximately 15 ° is already sufficient to be referred to as a so-called top in connection with the one shown in FIGS. 2 and 4 and described in more detail in the aforementioned DE 100 57 253 A1 -Lock receptacle designed connector 4 to ensure interchangeability of a non-illustrated, non-articulated wiper blade, although according to the invention the fastening part 2 and the wiper rod 3 are not rigidly connected by a hinged joint, as in known wiper arms.
- the material loads in the wiper arm 1 depend on various factors, such as driving and pressing forces, their points of attack and lever arms as well as the section modulus of the Wiper arms 1.
- the stroke or deflection angle can be calculated in particular as a function of the curvature of the respective pane 10 and can thus be determined for production.
- a wiper blade guide 6 which is directly molded onto the fastening part 2 can also be seen in FIG. 2.
- This wiper blade guide 6, which is advantageously integrated here and is known per se, is particularly suitable for very long wiper blades which can be kept stable against fluttering by contacting the inside of the wiper blade guide 6.
- the wiper arm 1 according to FIG. 2, similar to that shown in FIG. 1, is driven via the hub 7 by a motor vehicle, not shown, in such a way that the wiper blade 9 is pivoted over the vehicle window 10 with sufficient contact to it.
- the wiper rod 3 can be formed with a clip-on cover element, for example in the form of a spoiler, whereby the contact pressure on the wiper rod 3 is increased during the journey.
- Figure 3 shows the shape of the wiper arm 1 shown in Figure 2 in a view from above of the vehicle window.
- a wiper arm 1 is shown, in which the fastening part 2, the wiper rod 3 and the (top-lock) connector 4 are integrally formed, that is, the complete wiper arm 1 is made as a single part, for example by punching or deep drawing a tool.
- the entire wiper arm 1 is made of spring material, preferably spring steel, so that a suitable pivoting movement over the vehicle window 10 and, at the same time, a minimal but sufficient ability to fold down for exchanging a wiper blade 9 is ensured.
- the upper side in particular forms the middle section of the integrated wiper arm 1 Wiper rod 3 particularly suitable for training as a spoiler 8.
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- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention relates to a wiper arm for a windshield wiper, which is characterized in that the fastening element (2) of the wiper arm (1) and its wiper rod (3), whose free end is linked with a preferably bracket-free (non-articulated) wiper blade (9) via a connecting piece (4), are rigidly interlinked (without folding hinge). The wiper rod (3) consists of a spring-elastic material and is bent in such a manner that the wiper blade (9) rests against a pane (10) under a pre-stress exerted by the integral wiper arm (1). The inventive wiper arm (1) furthermore can be minimally but sufficiently folded to replace the wiper blade (9).
Description
Beschreibung description
Wischarm für ScheibenwischerWiper arm for windscreen wipers
Die Erfindung betrifft einen Wischarm für einen Scheibenwischer, mit einem Befestigungsteil und einer damit verbundenen Wischstange, deren freies Ende ein Anschlussstück für ein Wischblatt aufweist.The invention relates to a wiper arm for a windshield wiper, with a fastening part and an associated wiper rod, the free end of which has a connector for a wiper blade.
Bekannte Scheibenwischer weisen einen Wischarm auf, der aus einem angetriebenen Befestigungsteil, einem mit diesem über ein Abklappgelenk verbundenen Gelenkteil und aus einer sich an das Gelenkteil starr anschließenden Wischstange aufgebaut ist. Ferner besitzt ein herkömmlicher Scheibenwischer ein an der Wischstange angelenktes Wischblatt, das aus einem Tragbü- gelsystem und einer von diesem gehaltenen Wischleiste besteht. Das an der Wischstange-Wischblatt-Verbindung realisierte Gelenk führt das Wischblatt mit der Wischleiste beispielsweise über eine Kraftfahrzeugscheibe, wobei das Gelenkteil und das Tragbügelsystem es ermöglichen, dass sich die Wischleiste einer Wölbung der Kraftfahrzeugscheibe anpasst.Known windshield wipers have a wiper arm which is constructed from a driven fastening part, a joint part connected to the latter via a hinged joint, and a wiper rod rigidly adjoining the joint part. Furthermore, a conventional windshield wiper has a wiper blade articulated on the wiper rod, which consists of a support bracket system and a wiper strip held by the latter. The joint realized on the wiper rod-wiper blade connection guides the wiper blade with the wiper strip, for example, over a motor vehicle window, the joint part and the support bracket system making it possible for the wiper strip to adapt to a curvature of the motor vehicle window.
Ein erforderlicher Anpressdruck der Wischleiste wird üblicherweise mit mindestens einer Zugfeder erreicht, die das Befestigungsteil und das Gelenkteil gemeinsam mit der Wischstange über das Abklappgelenk verspannt. Dieser relativ aufwändige Mechanismus gewährleistet darüber hinaus, dass das Gelenkteil des Scheibenwischers zum Reinigen oder zur Montage eines Wischblatts ungefähr senkrecht von der Kraftfahrzeugscheibe abklappbar ist.A required contact pressure of the wiper strip is usually achieved with at least one tension spring, which braces the fastening part and the joint part together with the wiper rod via the folding joint. This relatively complex mechanism also ensures that the articulated part of the windshield wiper can be folded down approximately vertically from the motor vehicle window for cleaning or for mounting a wiper blade.
Bei neueren, vereinfachten Scheibenwischer-Ausführungen werden die Bügel des Tragbügelsystems durch ein Tragelement, insbesondere in die Wischleiste eingesetzte Federschienen, ersetzt, das den Anpressdruck elastisch auf die Wischleiste verteilt. Das bügellose Wischblatt kann mit der Wischstange, wie aus der DE 100 57 253 A 1 bekannt, durch Verklipsen eines
Anschlussstücks am freien Ende der Wischstange mit einem Ge- genanschlussstück am Wischblatt verbunden werden.In newer, simplified windshield wiper designs, the brackets of the support bracket system are replaced by a support element, in particular spring rails inserted into the wiper strip, which elastically distributes the contact pressure onto the wiper strip. The bracket-free wiper blade can be clipped to the wiper rod, as is known from DE 100 57 253 A1, by clipping one Connector at the free end of the wiper rod with a counter connector on the wiper blade.
Es ist Aufgabe der Erfindung, eine weitere Vereinfachung der bekannten Scheibenwischer, insbesondere hinsichtlich einer kostengünstigen Herstellbarkeit zu erreichen, wobei jedoch die bisherigen Funktionen, insbesondere hinsichtlich der Schwenkbewegung über die Fahrzeugscheibe und der Abklappbarkeit, im wesentlichen beibehalten werden sollen.It is an object of the invention to achieve a further simplification of the known windshield wipers, in particular with regard to cost-effective manufacture, but the previous functions, in particular with regard to the pivoting movement over the vehicle window and the ability to be folded down, are to be essentially retained.
Diese Aufgabe wird erfindungsgemäß durch einen Wischarm gemäß Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This object is achieved by a wiper arm according to claim 1. Advantageous refinements can be found in the subclaims.
Bei einem Wischarm der eingangs genannten Art ist erfindungsgemäß vorgesehen, dass das Befestigungsteil und die Wischstange starr, also abklappgelenkfrei, miteinander verbunden sind. Es ist erfindungsgemäß gleichzeitig vorgesehen, dass die Wischstange aus einem federelastischen Material besteht .In the case of a wiper arm of the type mentioned at the outset, it is provided according to the invention that the fastening part and the wiper rod are connected to one another in a rigid manner, that is to say without a hinged joint. It is also provided according to the invention that the wiper rod consists of a resilient material.
Bevorzugt ist die Wischstange derart gebogen, dass das Wischblatt unter einer vom Wischarm ausgeübten Vorspannung an einer Scheibe anliegt.The wiper rod is preferably bent in such a way that the wiper blade lies against a pane under a pretension exerted by the wiper arm.
Der erfindungsgemäße Federwischarm bietet insbesondere durch Wegfall des bisher üblichen Abklappgelenks und der Zugfeder eine erhebliche konstruktive bzw. fertigungstechnische Vereinfachung. Auf Grund der vorgebogenen Wischstange bzw. des vorgebogenen Wischarms insgesamt ergibt sich jedoch trotzdem eine ausreichende Flexibilität und Federkraft, um der Krümmung der Fahrzeugscheibe folgen zu können. Gleichzeitig ist es möglich, den Wischarm auf Grund seiner Federeigenschaften, die sich vorteilhaft durch Verwendung von Federstahl verwirklichen lassen, zwar nicht bis in eine zur Scheibe senkrechte Position hochzuklappen, jedoch mindestens so weit von der Fahrzeugscheibe abzuklappen, genauer: gegen die bestehende
Vorspannung hochzubiegen, dass das Wischblatt, insbesondere zu Montagezwecken, zugänglich wird.The spring wiper arm according to the invention offers considerable design and manufacturing simplification, in particular by eliminating the hinge joint previously used and the tension spring. However, due to the pre-bent wiper rod or the pre-bent wiper arm, there is nevertheless sufficient flexibility and spring force to be able to follow the curvature of the vehicle window. At the same time, due to its spring properties, which can advantageously be achieved by using spring steel, it is possible not to fold the wiper arm up to a position perpendicular to the window, but to fold it at least as far from the vehicle window, more precisely: against the existing one Bending up the preload so that the wiper blade is accessible, especially for assembly purposes.
In diesem Zusammenhang ist es vorteilhaft, ein bügelloses (also gelenkfreies ) Wischblatt zu verwenden. Das Anschlussstück für das Wischblatt ist bei dieser Ausführung derart ausgebildet, dass es mit einem Gegenanschlussstück eines bügellosen Wischblatts gelenkfrei verklipsbar ist. Dies eröffnet die Möglichkeit, das Wischblatt bereits dann austauschen zu können, wenn der Wischarm beispielsweise um einem Winkel von nur 15° hochgeklappt ist.In this context, it is advantageous to use a non-iron (i.e. joint-free) wiper blade. In this embodiment, the connection piece for the wiper blade is designed in such a way that it can be clipped without a joint with a counter-connection piece of a non-iron wiper blade. This opens up the possibility of being able to replace the wiper blade when the wiper arm is folded up, for example, by an angle of only 15 °.
Die Erfindung kann mit besonderem Vorteil auch dadurch realisiert werden, dass nicht nur die Wischstange, sondern der Wischarm insgesamt aus einem federelastischen Material besteht, also einstückig gefertigt werden kann.The invention can also be implemented with particular advantage in that not only the wiper rod, but also the wiper arm as a whole consists of a resilient material, that is to say can be manufactured in one piece.
Weitere Vorteile und Ausgestaltungen der Erfindung sind in der nachfolgenden Beschreibung der in den Figuren der Zeichnung dargestellten Ausführungsbeispiele näher erläutert. Es zeigen:Further advantages and refinements of the invention are explained in more detail in the following description of the exemplary embodiments shown in the figures of the drawing. Show it:
Figur 1 eine schematische Darstellung eines bekannten, aus Wischarm und Wischblatt bestehenden, über eine Scheibe schwenkbaren Wischhebels;Figure 1 is a schematic representation of a known wiper arm and wiper blade consisting of a wiper lever pivotable about a disc;
Figur 2 eine perspektivische Ansicht einer ersten Ausführung eines erfindungsgemäßen Wischarms;FIG. 2 shows a perspective view of a first embodiment of a wiper arm according to the invention;
Figur 3 eine Draufsicht auf den Wischarm gemäß Figur 1;FIG. 3 shows a top view of the wiper arm according to FIG. 1;
Figur 4 eine perspektivische Ansicht einer zweiten Ausführung des erfindungsgemäßen Wischarms.Figure 4 is a perspective view of a second embodiment of the wiper arm according to the invention.
Figur 1 zeigt schematisch einen bekannten Wischarm 1, an den ein Wischblatt 9 angelenkt ist, so dass der Wischhebel 1 und 9 insgesamt unter Beachtung der Wölbung einer Fahrzeugscheibe
10 über diese geschwenkt werden kann. Wie erkennbar, ist das Wischblatt 9, wie bisher meist üblich, seitlich an das freie Ende des Wischarms 1 angelenkt (so genanntes Side-Lock- System) .FIG. 1 schematically shows a known wiper arm 1, to which a wiper blade 9 is articulated, so that the wiper levers 1 and 9 as a whole take into account the curvature of a vehicle window 10 can be pivoted over this. As can be seen, the wiper blade 9 is articulated laterally to the free end of the wiper arm 1 (so-called side-lock system).
Ein in Figur 2 dargestellter Wischarm 1 weist ein Befestigungsteil 2, eine Wischstange 3 und ein Anschlussstück 4 auf. Die für die federelastischen Eigenschaften des gesamten Wischarms 1 bei dieser Ausführungsform entscheidend erantwortliche Wischstange 3 besteht vorzugsweise aus Federstahl; grundsätzlich kommt jedoch, ebenso wie bei der Ausführung gemäß Figur 4, auch ein Kunststoff, der dauerhaft entsprechende elastische Eigenschaften aufweist, in Frage.A wiper arm 1 shown in FIG. 2 has a fastening part 2, a wiper rod 3 and a connecting piece 4. The wiper rod 3, which is decisively responsible for the resilient properties of the entire wiper arm 1 in this embodiment, preferably consists of spring steel; in principle, however, just as in the embodiment according to FIG. 4, a plastic that has permanently corresponding elastic properties can also be used.
Der Wischarm 1 gemäß Figur 2 kann demnach aus drei separaten Teilen bestehen, wobei das Befestigungsteil 2 und das Anschlussstück 4 beispielhalber als Kunststoffanspritzung an die aus Federstahl bestehende Wischstange 3 hergestellt sein können. Die federelastische Auslenkbarkeit des gebogenen Wischarms 1 bei Kräften, die in Richtung des Doppelpfeils in Figur 2 wirken, ergibt sich aus den in Figur 2 angedeuteten punktierten Linien 5.The wiper arm 1 according to FIG. 2 can accordingly consist of three separate parts, the fastening part 2 and the connecting piece 4 being able, for example, to be produced as a plastic injection onto the wiper rod 3 consisting of spring steel. The spring-elastic deflectability of the curved wiper arm 1 with forces acting in the direction of the double arrow in FIG. 2 results from the dotted lines 5 indicated in FIG. 2.
Ein möglicher Hub- bzw. Auslenkwinkel des Wischarms 1 gegenüber der Scheibe von etwa 15° ist bereits ausreichend, um im Zusammenhang mit dem in Figur 2 und 4 dargestellten und in der eingangs genannten DE 100 57 253 A 1 näher beschriebenen, als so genannte Top-Lock-Aufnahme ausgeführten Anschlussstück 4 eine Austauschbarkeit eines (nicht dargestellten) bügellosen, gelenkfreien Wischblatts zu gewährleisten, obwohl erfindungsgemäß das Befestigungsteil 2 und die Wischstange 3 nicht wie bei bekannten Wischarmen durch ein Abklappgelenk, sondern starr verbunden sind.A possible stroke or deflection angle of the wiper arm 1 with respect to the window of approximately 15 ° is already sufficient to be referred to as a so-called top in connection with the one shown in FIGS. 2 and 4 and described in more detail in the aforementioned DE 100 57 253 A1 -Lock receptacle designed connector 4 to ensure interchangeability of a non-illustrated, non-articulated wiper blade, although according to the invention the fastening part 2 and the wiper rod 3 are not rigidly connected by a hinged joint, as in known wiper arms.
Die Materialbelastungen im Wischarm 1 hängen von verschiedenen Faktoren ab, wie Antriebs- und Anpresskräften, deren Angriffspunkten und Hebelarmen sowie dem Widerstandsmoment des
Wischarms 1. Der Hub- bzw. Auslenkwinkel kann insbesondere in Abhängigkeit von der Krümmung der jeweiligen Scheibe 10 berechnet und somit für die Fertigung festgelegt werden.The material loads in the wiper arm 1 depend on various factors, such as driving and pressing forces, their points of attack and lever arms as well as the section modulus of the Wiper arms 1. The stroke or deflection angle can be calculated in particular as a function of the curvature of the respective pane 10 and can thus be determined for production.
Erkennbar in Figur 2 ist auch eine am Befestigungsteil 2 unmittelbar angeformte Wischblattführung 6. Diese hier vorteilhaft integrierte, an sich bekannte Wischblattführung 6 ist insbesondere für sehr lange Wischblätter geeignet, die durch Anliegen an der Innenseite der Wischblattführung 6 gegen Flattern stabil gehalten werden können.A wiper blade guide 6 which is directly molded onto the fastening part 2 can also be seen in FIG. 2. This wiper blade guide 6, which is advantageously integrated here and is known per se, is particularly suitable for very long wiper blades which can be kept stable against fluttering by contacting the inside of the wiper blade guide 6.
Der Wischarm 1 gemäß Figur 2 wird, ähnlich wie in Figur 1 gezeigt, über die Nabe 7 von einem nicht dargestellten Kraftfahrzeug so angetrieben, dass das Wischblatt 9 über die Fahrzeugscheibe 10, mit ausreichendem Kontakt zu dieser, geschwenkt wird. Insbesondere die Wischstange 3 kann mit einem beispielsweise als Spoiler ausgebildeten aufklipsbaren Abdeckelement ausgebildet sein, wodurch der Anpressdruck auf die Wischstange 3 während der Fahrt noch verstärkt wird.The wiper arm 1 according to FIG. 2, similar to that shown in FIG. 1, is driven via the hub 7 by a motor vehicle, not shown, in such a way that the wiper blade 9 is pivoted over the vehicle window 10 with sufficient contact to it. In particular, the wiper rod 3 can be formed with a clip-on cover element, for example in the form of a spoiler, whereby the contact pressure on the wiper rod 3 is increased during the journey.
Figur 3 zeigt die Formgebung des in Figur 2 dargestellten Wischarms 1 in einer Ansicht von oben auf die Fahrzeugscheibe .Figure 3 shows the shape of the wiper arm 1 shown in Figure 2 in a view from above of the vehicle window.
In Figur 4 ist ein Wischarm 1 dargestellt, bei dem das Befestigungsteil 2, die Wischstange 3 und das (Top-Lock) Anschlussstück 4 einstückig ausgebildet sind, das heißt, der komplette Wischarm 1 wird als ein Einzelteil, beispielsweise durch Stanzen oder Tiefziehen, von einem Werkzeug hergestellt. Bei dieser Ausführung ist der ganze Wischarm 1 aus Federmaterial, vorzugsweise Federstahl, gebildet, so dass eine geeignete Schwenkbewegung über die Fahrzeugscheibe 10 und gleichzeitig eine minimale, aber ausreichende Abklappfähigkeit zum Austauschen eines Wischblatts 9 gewährleistet ist. Dabei ist, wie erkennbar, insbesondere die Oberseite der den Mittelabschnitt des integrierten Wischarms 1 bildende
Wischstange 3 besonders zur Ausbildung als Spoiler 8 geeignet .In Figure 4, a wiper arm 1 is shown, in which the fastening part 2, the wiper rod 3 and the (top-lock) connector 4 are integrally formed, that is, the complete wiper arm 1 is made as a single part, for example by punching or deep drawing a tool. In this embodiment, the entire wiper arm 1 is made of spring material, preferably spring steel, so that a suitable pivoting movement over the vehicle window 10 and, at the same time, a minimal but sufficient ability to fold down for exchanging a wiper blade 9 is ensured. As can be seen, the upper side in particular forms the middle section of the integrated wiper arm 1 Wiper rod 3 particularly suitable for training as a spoiler 8.
Die federelastische Auslenkbarkeit des gebogenen Wischarms 1 bei Kräften, die in Richtung des Doppelpfeils in Figur 4 wirken, ergibt sich aus den in Figur 4 angedeuteten punktierten Linien 5.
The resilient deflectability of the curved wiper arm 1 with forces acting in the direction of the double arrow in FIG. 4 results from the dotted lines 5 indicated in FIG. 4.
Claims
1. Wischarm für einen Scheibenwischer, mit einem Befestigungsteil (2) und einer damit verbundenen1. Wiper arm for a windshield wiper, with a fastening part (2) and an associated
Wischstange (3), deren freies Ende ein Anschlussstück (4) für ein Wischblatt (9) aufweist, dadurch gekennzeichnet, dass das Befestigungsteil (2) und die Wischstange (3) starr miteinander verbunden sind, und dass die Wischstange (3) aus einem federelastischen Material besteht.Wiper rod (3), the free end of which has a connecting piece (4) for a wiper blade (9), characterized in that the fastening part (2) and the wiper rod (3) are rigidly connected to one another, and in that the wiper rod (3) consists of one resilient material is made.
2. Wischarm nach Anspruch 1, dadurch gekennzeichnet, dass die Wischstange (3) derart gebogen ist, dass das Wischblatt (9) unter einer vom Wischarm (1) ausgeübten Vorspannung an einer Scheibe (10) anliegt .2. Wiper arm according to claim 1, characterized in that the wiper rod (3) is bent such that the wiper blade (9) bears against a disc (10) under a pre-tension exerted by the wiper arm (1).
3. Wischarm nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als federelastisches Material Federstahl verwendet ist.3. Wiper arm according to claim 1 or 2, characterized in that spring steel is used as the spring-elastic material.
4. Wischarm nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Anschlussstück (4) derart ausgebildet ist, dass es mit einem Gegenanschlussstück eines bügellosen Wischblatts (9) verbindbar ist.4. Wiper arm according to one of claims 1 to 3, characterized in that the connecting piece (4) is designed such that it can be connected to a counter-connecting piece of a bracket-free wiper blade (9).
5. Wischarm nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass am Befestigungsteil (2) oder an der Wischstange (3) eine Wischblattführung (6) angeformt ist.5. Wiper arm according to one of claims 1 to 4, characterized in that a wiper blade guide (6) is integrally formed on the fastening part (2) or on the wiper rod (3).
6. Wischarm nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mindestens die Wischstange (3) an ihrer Oberseite mit einem unmittelbar angeformten Spoiler (8) ausgebildet ist. 6. Wiper arm according to one of claims 1 to 5, characterized in that at least the wiper rod (3) is formed on its upper side with a directly molded spoiler (8).
7. Wischarm nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Wischarm (1) einstückig aus federelastischem Material gefertigt ist. 7. Wiper arm according to one of claims 1 to 7, characterized in that the wiper arm (1) is made in one piece from resilient material.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10304628 | 2003-01-20 | ||
| DE10304628.3 | 2003-01-20 | ||
| DE10323044.0 | 2003-05-20 | ||
| DE10323044A DE10323044A1 (en) | 2003-01-20 | 2003-05-20 | Windscreen wiper arm comprises only fastening section and resilient wiper strip, rigidly connected together |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004065187A1 true WO2004065187A1 (en) | 2004-08-05 |
Family
ID=32773161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2004/000060 WO2004065187A1 (en) | 2003-01-20 | 2004-01-17 | Wiper arm for a windshield wiper |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2004065187A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005054018A1 (en) * | 2003-11-28 | 2005-06-16 | Robert Bosch Gmbh | Wiper arm and method for producing a wiper arm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022444A1 (en) * | 1991-06-11 | 1992-12-23 | Ab Volvo | A device in windscreen wiper arms for motor vehicles |
| US5819363A (en) * | 1994-11-30 | 1998-10-13 | Mercedes-Benz Ag | Windshield wiper for a window with a constant radius of curvature |
| US6327739B1 (en) * | 1997-11-13 | 2001-12-11 | Robert Bosch Gmbh | Wipe device for windows of motor vehicles, having an elongated wiper arm, which is guided at one end on the motor vehicle and is driven |
| DE10038396A1 (en) * | 2000-08-07 | 2002-03-07 | Valeo Auto Electric Gmbh | Windscreen wiper has aperture in its arm for mounting it on drive shaft, arm having U-shaped cross-section and walls of the aperture being made in one piece with arm |
-
2004
- 2004-01-17 WO PCT/DE2004/000060 patent/WO2004065187A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022444A1 (en) * | 1991-06-11 | 1992-12-23 | Ab Volvo | A device in windscreen wiper arms for motor vehicles |
| US5819363A (en) * | 1994-11-30 | 1998-10-13 | Mercedes-Benz Ag | Windshield wiper for a window with a constant radius of curvature |
| US6327739B1 (en) * | 1997-11-13 | 2001-12-11 | Robert Bosch Gmbh | Wipe device for windows of motor vehicles, having an elongated wiper arm, which is guided at one end on the motor vehicle and is driven |
| DE10038396A1 (en) * | 2000-08-07 | 2002-03-07 | Valeo Auto Electric Gmbh | Windscreen wiper has aperture in its arm for mounting it on drive shaft, arm having U-shaped cross-section and walls of the aperture being made in one piece with arm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005054018A1 (en) * | 2003-11-28 | 2005-06-16 | Robert Bosch Gmbh | Wiper arm and method for producing a wiper arm |
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