WO2002034589A1 - Wiper blade and method for heating a wiper blade - Google Patents
Wiper blade and method for heating a wiper blade Download PDFInfo
- Publication number
- WO2002034589A1 WO2002034589A1 PCT/DE2001/003694 DE0103694W WO0234589A1 WO 2002034589 A1 WO2002034589 A1 WO 2002034589A1 DE 0103694 W DE0103694 W DE 0103694W WO 0234589 A1 WO0234589 A1 WO 0234589A1
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- WIPO (PCT)
- Prior art keywords
- wiper
- wiper blade
- head
- plastic
- electrically conductive
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/52—Arrangement of nozzles; Liquid spreading means
- B60S1/522—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms
- B60S1/524—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms arranged in wiper blades
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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
- B60S1/38—Wiper blades
- B60S1/3803—Wiper blades heated wiper blades
- B60S1/3805—Wiper blades heated wiper blades electrically
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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
- B60S1/38—Wiper blades
- B60S2001/3827—Wiper blades characterised by the squeegee or blade rubber or wiping element
- B60S2001/3836—Wiper blades characterised by the squeegee or blade rubber or wiping element characterised by cross-sectional shape
Definitions
- the invention relates to a wiper blade with a wiper head for fastening the wiper blade to a wiper arm.
- the invention further relates to a method for heating a wiper blade with a wiper head for attaching the wiper blade to a wiper arm.
- Wiper blades are used for wipers to clean automotive windows, such as windshields and rear windows.
- Frozen wiper blades are not only annoying for the driver; they also pose a high safety risk because the windscreen wipers lose a large part of their cleaning ability with frozen wiper blades.
- the wiper blades face the problem of limited radio interference.
- ability of the wiper blades has not yet been completely solved, since the elasticity of the wiper blades, which are usually made of rubber, is reduced at low temperatures.
- the invention is based on a generic wiper blade in that the wiper head comprises a plastic which has an electrically conductive material, the resistance of an electrically conductive region of the wiper head having a positive temperature coefficient.
- the wiper head comprises a plastic which has an electrically conductive material, the resistance of an electrically conductive region of the wiper head having a positive temperature coefficient.
- an additional heating device for example a resistance wire running parallel to the wiper blade.
- a constant voltage in the area of the Wiscner head for example the battery voltage of the motor vehicle, results in a comparatively low temperature due to the positive temperature coefficient of the electrical resistance electrical resistance of the electrically conductive area.
- a high current can flow, which in turn leads to rapid heating of the wiper head.
- the resistance increases due to the positive temperature coefficient.
- the flow of electricity is inhibited, as is the development of heat at higher temperatures.
- the system therefore has self-regulating properties.
- the plastic is preferably a thermoplastic manufactured plastic. It is possible to impart electrical conductivity to a thermoplastic manufactured plastic, so that the prerequisite for the implementation of the invention is given. Furthermore, thermoplastic manufacturing processes are inexpensive and particularly suitable for mass production.
- the plastic is preferably conductive by incorporating electrically conductive additives.
- a plastic can be used, which is an ordinary insulator per se, while the electrical conductivity required in the context of the invention is provided by additives.
- the plastic embedding of steel fibers is conductive. In this way, it is possible to provide the plastic with an electrical conductivity in a simple manner, in particular by providing a positive temperature coefficient which is typical of metals. It is particularly preferred if the back strip of the wiper head is electrically conductive.
- the P-üokenance the wiper head, that is the side of the ischeriopfes facing away from the wiper lip, is special ⁇ DERS well for supplying an electric voltage because the mechanical stresses or deformations are here due to the wiping action at all.
- the back bar offers the best access options for electrical contacts.
- connections are provided, by means of which a voltage can be supplied via a switch.
- the heating of the wiper blade can thus be removed or snapped in as desired.
- the wiper head has at least one channel running in the longitudinal direction of the wiper blade.
- a channel can be used to conduct a cleaning fluid, which can then escape at one or more parts of the channel for window cleaning.
- a temperature controller is provided. Even if the invention can basically do without a temperature controller, which is mainly due to the self-regulating properties due to the positive temperature coefficient, an additional controller can bring advantages. It is conceivable that the temperature is regulated directly. For this purpose, the temperature on the wiper blade is measured by a sensor. ⁇ oenfails it is conceivable and sometimes easier to regulate the temperature indirectly via a current regain.
- the wiper head comprises a plastic u which has an electrically conductive material, o- the resistance of an electrically conductive area of the wiper head has a positive temperature coefficient and that an essentially constant voltage is applied to the electrically conductive area.
- an additional heating device for example a resistance wire running parallel to the wiper blade.
- the temperature of the wiper blade is regulated. Even if the invention can basically do without temperature control, which is mainly due to the self-regulating properties due to the positive temperature coefficient, an additional controller can bring advantages. This is the case in particular when there are particularly strongly varying temperatures, so that the resistance-temperature characteristic has an unfavorable effect on the self-regulation.
- the invention is based on the surprising finding that heating of a wiper blade can be achieved in a controlled manner by the nature of the plastic of a wiper head.
- the resistance having a positive temperature coefficient, it is possible to deice the windshield wiper by applying a constant voltage; at the same time there is a self-regulating effect.
- Figure 1 is a perspective view of a wiper blade.
- FIG. 1 shows a wiper blade 10 in a highly schematic perspective view.
- the wiper plate 10 has a wiper head 12. With this wiper head 12, the wiper blade 10 is attached to a wiper arm, not shown.
- a base plate 22 is fastened to the wiper head and asks a wiper lip 26 via a tilting web 24.
- Two of the wiper head 12 has parallel to the 'wiper blade formed channels 18, 20 in the longitudinal direction.
- electrical connections are provided on the wiper head 12, an electrical socket 16 being shown in FIG. 1.
- the back bar 14 of the wiper head 12 is designed to be electrically conductive.
- the wiper head 12 is preferably a wiper head 22 made of thermoplastic plastic. Electrical conductivity is imparted to this plastic, so that the wiper head 12 is electrically conductive overall, in particular the area of the back 14.
- the wiper head 12 is electrical Conductivity mediated in such a way that the electrical resistance has a positive temperature coefficient. This can be achieved, for example, by adding pile fibers to the thermoplastic.
- other components of the wiper blade 10 are also made of a similar or the same thermoplastic material, for example the base strip 22, the tilting web 24 and the wiper lip 26, it is possible for the wiper blade 10 as a whole to be self-regulating by applying a constant electrical voltage Way to warm.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Wischerblatt und Verfahren zum Erwärmen eines WischerblattesWiper blade and method for heating a wiper blade
Die Erfindung betrifft ein Wischerblatt mit einem Wischerkopf zum Befestigen des Wischerblattes an einem Wischerarm. Die Erfindung betrifft ferner ein Verfahren zum Erwärmen eines Wischerblattes mit einem Wischerkopf zum Befestigen des Wischerblattes an einem Wischerarιτι.The invention relates to a wiper blade with a wiper head for fastening the wiper blade to a wiper arm. The invention further relates to a method for heating a wiper blade with a wiper head for attaching the wiper blade to a wiper arm.
Stand der TechnikState of the art
Wischerblätter werden für Scheibenwischer zum Reinigen von Kraftfahrzeugscheiben verwendet, beispielsweise von Windschutzscheiben und von Heckscheiben.Wiper blades are used for wipers to clean automotive windows, such as windshields and rear windows.
Eingefrorene Wischerblätter sind nicht nur lästig für den Autofahrer; sie bringen auch ein hohes Sicherheitsrisiko mit sich, da die Scheibenwischer mir einge rorenen Wischerblättern einen großen Teil ihrer Reinigur.gsfähigkei- ten verlieren. Bei herkömmlichen Wischerblättern ist es erforderlich, Eis, weiches sich auf den Wischerblättern gesammelt hat, von Hand zu entfernen. Bei ungünstigen Wetterbedingungen uss dies häufig erfeigen. Allerdings ist durch dss alleinige Entfernen oes Eises vor., den Wischerblättern das Problem der einαeschränkten Funk icns- fahigkeit der Wischerblätter noch nicht vollständig gelöst, da die Elastizität der meist aus Gummi bestehenden Wischerblätter bei niedrigen Temperaturen star herabgesetzt wird.Frozen wiper blades are not only annoying for the driver; they also pose a high safety risk because the windscreen wipers lose a large part of their cleaning ability with frozen wiper blades. With conventional wiper blades, it is necessary to remove ice that has accumulated on the wiper blades by hand. In unfavorable weather conditions, this is often done. However, by removing the ice alone, the wiper blades face the problem of limited radio interference. ability of the wiper blades has not yet been completely solved, since the elasticity of the wiper blades, which are usually made of rubber, is reduced at low temperatures.
Es wurde bereits vorgeschlagen, Wischerblätter zu beheizen, um den genannten Problemen aus dem Weg zu gehen. Beispielsweise wurde vorgeschlagen, die Wischerblätter durch einen parallel zu den Wischerblättern verlaufenden Widerstandsdraht, an den eine elektrische Spannung angelegt wird, zu beheizen. Diese und andere Lösungen des Standes der Technik erweisen sich jedoch als aufwendig. Ferner werden häufig keine zufriedenstellenden Ergebnisse erreicht .It has already been proposed to heat wiper blades to avoid the problems mentioned. For example, it has been proposed to heat the wiper blades by means of a resistance wire running parallel to the wiper blades, to which an electrical voltage is applied. However, these and other prior art solutions prove to be complex. Furthermore, satisfactory results are often not achieved.
Vorteile der ErfindungAdvantages of the invention
Die Erfindung baut auf einem gattungsgemäßen Wischerblatt dadurch auf, dass der Wischerkopf einen Kunststoff u - fasst, welcher ein elektrisch ieitfähiges Material aufweist, wobei der Widerstand eines elektrisch leitfähigen Bereiches des Wischerkopfes einen positiven Temperaturkoeffizienten hat. Auf diese Weise ist es möglich, das Wi- scherblatt zu heizen, ohne eine zusätzliche Heizvorrich- tunσ, beispielsv/eise einen parallel zum Wischerblatt verlaufenden Widerstancsdraht, zu verwenden, legt man an den elektrisch leitfähiger. Bereich des Wiscnerkopfes eine konstante Spannung an, etwa die Batteriespannung des Kraftfahrzeuges, so ergibt sich bei niedrigen Temperaturen aufgrund des positiven Temperaturkoef i ien en des elektrischen Widerstandes ein vercleichsweise --etincier elei-triscner Widerstand des elektrisch leitfähigen Bereiches. Dies hat zur Folge, dass ein hoher Strom fließen kann, was wiederum zu einer raschen Erwärmung des Wischerkopfes führt. Bei honeren Temoeraturen steigt der Widerstand aufgrund des positiven Temperaturkoeffizienten an. Folglich wird der Stromfluss gehemmt, und ebenso die Wärmeentwicklung bei höheren Temperaturen. Das System hat somit selbstregelnde Eigenschaften.The invention is based on a generic wiper blade in that the wiper head comprises a plastic which has an electrically conductive material, the resistance of an electrically conductive region of the wiper head having a positive temperature coefficient. In this way it is possible to heat the wiper blade without using an additional heating device, for example a resistance wire running parallel to the wiper blade, is placed on the electrically conductive one. A constant voltage in the area of the Wiscner head, for example the battery voltage of the motor vehicle, results in a comparatively low temperature due to the positive temperature coefficient of the electrical resistance electrical resistance of the electrically conductive area. As a result, a high current can flow, which in turn leads to rapid heating of the wiper head. In the case of honed temperatures, the resistance increases due to the positive temperature coefficient. As a result, the flow of electricity is inhibited, as is the development of heat at higher temperatures. The system therefore has self-regulating properties.
Vorzugsweise ist der Kunststoff ein thermoplastisch hergestellter Kunststoff. Es ist möglich, einen thermoplastisch hergestellten Kunststoff eine elektrische Leitfähigkeit zu vermitteln, so dass die Voraussetzung für die Umsetzung der Erfindung gegeben ist. Ferner sind ther o- plastische Herstellungsverfahren kostengünstig und insbesondere für die Massenfertigung geeignet.The plastic is preferably a thermoplastic manufactured plastic. It is possible to impart electrical conductivity to a thermoplastic manufactured plastic, so that the prerequisite for the implementation of the invention is given. Furthermore, thermoplastic manufacturing processes are inexpensive and particularly suitable for mass production.
Bevorzugt ist der Kunststoff durch Einlagerung elektrisch ieitfähiger Zusätze leitfähig. Somit kann ein Kunststoff verwendet werden, der an sich ein gewöhnlicher Isolator ist, während die im Rahmen der Erfindung erforderliche elektrische Leitfähigkeit durch Zusätze bereitgestellt wird .The plastic is preferably conductive by incorporating electrically conductive additives. Thus, a plastic can be used, which is an ordinary insulator per se, while the electrical conductivity required in the context of the invention is provided by additives.
Dabei ist es bevorzugt, dass der Kunststoff άurcn Einlagerung von Stahlfasern leitfähig ist. Hierdurch kann es gelingen, dem Kunststoff in einfacher Weise eine elektrische Leitfähigkeit zu vermitteln, wobei insbesondere ein für Metalle typischer positiver Temperatuimoeffizient zur Verfügung gestellt wird. Besonders bevorzugt ist es, wenn die Rückenleistε des Wischerkopfes elektrisch leitfähig ist . Die P-üokenleiste des Wischerkopfes, das heißt die Seite des ischeriopfes , welche der Wischlippe abgewandt ist, eignet sich beson¬ ders gut zum Zuführen einer elektrischen Spannung, da hier die mechanischen Belastungen beziehungsweise Verformungen aufgrund des Wischvorganges am Geringsten sind. Ferner bietet die Rückenleiste die besten Zugangsmöglichkeiten für elektrische Kontakte.It is preferred that the plastic embedding of steel fibers is conductive. In this way, it is possible to provide the plastic with an electrical conductivity in a simple manner, in particular by providing a positive temperature coefficient which is typical of metals. It is particularly preferred if the back strip of the wiper head is electrically conductive. The P-üokenleiste the wiper head, that is the side of the ischeriopfes facing away from the wiper lip, is special ¬ DERS well for supplying an electric voltage because the mechanical stresses or deformations are here due to the wiping action at all. Furthermore, the back bar offers the best access options for electrical contacts.
Besonders bevorzugt ist es, wenn Anschlüsse vorgesehen sind, mittels welcher über einen Schalter eine Spannung ruführbar ist. Somit läsεt sich die Beheizung des Wischerblattes nach Belieben aus- oder einscnalfen.It is particularly preferred if connections are provided, by means of which a voltage can be supplied via a switch. The heating of the wiper blade can thus be removed or snapped in as desired.
Besonders bevorzugt ist es, wenn der Wischerkopf mindestens einen in Längsrichtung des Wischerblattes verlaufenden Kanal aufweist. Ein solcher Kanal kann verwendet werden, um ein Reinigungsfluid zu leiten, welches dann zur Ξcheibenreinigung an einer oder mehreren Steilen des Kanals austreten kann. Aufgrund der Erfindung ist es möglich, ein Einfrieren der Flüssigkeif in dem Kanal zu verhindern beziehungsweise bereits eingefrorene Flüssigkeit rasch aufzutauen.It is particularly preferred if the wiper head has at least one channel running in the longitudinal direction of the wiper blade. Such a channel can be used to conduct a cleaning fluid, which can then escape at one or more parts of the channel for window cleaning. On the basis of the invention, it is possible to prevent the liquid wedge from freezing in the channel or to quickly thaw already frozen liquid.
Besonders πützlicn ist es, wenn weitere Elemente des Wischerblattes aus Kunststoff gebildet sind. Somit findet eine gleichmäßige Wärmeübertragung von dem vorzugsweise in der Rückenleiste angeordneten Heizbereich zu den ande- ren Teilen des Wischerblattes statt, insbesondere wenn der elektrisch leitfahige Kunststoff derselbe Kunststoff ist beziehungsweise ein Kunststoff mit vergleichbaren Ei- genscnaften im Hinblick auf Wärmeleitung und Warmespei- cherung . Es kann somit eine gleichmäßige Ξnteisung des gesamten Wischerblattes erfolgen.It is particularly useful if further elements of the wiper blade are made of plastic. This results in a uniform heat transfer from the heating area, which is preferably arranged in the back strip, to the other parts of the wiper blade, in particular if the electrically conductive plastic is the same plastic or a plastic with comparable egg in terms of heat conduction and heat storage. This means that the entire wiper blade can be de-iced evenly.
Es kann auch nützlich sein, wenn ein Temperaturregler vorgesehen ist. Auch wenn die Erfindung grundsätzlich ohne Temperaturregler auskommen kann, was hauptsächlich durch die selbstregelnden Eigenschaften aufgrund des positiven Temperaturkoeffizienten zurückzuführen ist, kann ein zusätzlicher Regler Vorteile mit sich bringen. Dabei ist es denkbar, dass die Temperatur unmittelbar geregelt wird. Hierzu wird die Temperatur am Wischerblatt durch einen Sensor gemessen. Ξoenfails ist es aber denkbar und mitunter einfacher, die Temperatur indirekt über eine Stromregeinng zu regeln.It can also be useful if a temperature controller is provided. Even if the invention can basically do without a temperature controller, which is mainly due to the self-regulating properties due to the positive temperature coefficient, an additional controller can bring advantages. It is conceivable that the temperature is regulated directly. For this purpose, the temperature on the wiper blade is measured by a sensor. Ξoenfails it is conceivable and sometimes easier to regulate the temperature indirectly via a current regain.
Die Erfindung baut auf de . gattungsgemäßen Verfahren dadurch auf, dass der Wischerkopf einen Kunststoff u fasst, welcher ein elektrisch leitfähiges Material aufweist, o- bei der Widerstand eines elektrisch leitfähigen Bereiches des Wischerkopfes einen positiven Temperaturkoeffizienten hat und dass an dem elektrisch leitfähigen 3ereich eine im Wesentlichen konstante Spannung angelegt wird. Auf diese Weise ist es möglich, das Wischerblatt zu heizen, ohne eine zusätzliche Heizvorrichtung, beispielsweise einen parallel zum Wischerblatt verlaufenden Widerst nds- draht, zu verwenden. Legt man an den elektrisch leit fähigen Bereich des Wischerköpfes eine konstante Spannung an, etwa die Batterie Spannung des Kraftfahrzeuges, so ergibt sich bei niedrigen Temperaturen aufgrund des positiven Temperaturkoe fizienten des elektrischen Widerstandes ein vergleichsweise geringer elektrischer Widerstand des e- lektriscn leitfähigen Bereiches, Dies hat zur Folge, dass ein hoher Strom fließen kann, was wiederum zu einer raschen Erwärmung αes Wischerkopfes führt. Bei höheren Temperaturen steigt oer Widerstand aufgrund des positiven Temperaturkoeffizienten an. Folglich wird der Stromfluss gehemmt, und ebenso die Wärmeentwicklung bei höheren Temperaturen. Das System hat somit selbstregelnde Eigenschaften.The invention builds on de. Generic method in that the wiper head comprises a plastic u which has an electrically conductive material, o- the resistance of an electrically conductive area of the wiper head has a positive temperature coefficient and that an essentially constant voltage is applied to the electrically conductive area. In this way it is possible to heat the wiper blade without using an additional heating device, for example a resistance wire running parallel to the wiper blade. If a constant voltage is applied to the electrically conductive area of the wiper head, for example the battery voltage of the motor vehicle, then at low temperatures the electrical resistance of the electrical resistance results in a comparatively low electrical resistance due to the positive temperature coefficient. electrically conductive area, this has the consequence that a high current can flow, which in turn leads to rapid heating of the wiper head. At higher temperatures the resistance increases due to the positive temperature coefficient. As a result, the flow of electricity is inhibited, as is the development of heat at higher temperatures. The system therefore has self-regulating properties.
Es kann aber auch besonders nützlich sein, wenn die Temperatur des Wischerblattes geregelt wird. Auch wenn die Erfindung grundsätzlich ohne Temperaturregier auskommen kann, was hauptsächlich durch die selbstregelnden Eigenschaften aufgrund des positiven Tem-peraturkoeffizienten zurückzuführen ist, kann ein zusätzlicher Regler Vorteile mit sich bringen. Dies ist insbesondere dann der Fall, wenn besonders stark variierende Temperaturen vorliegen, so dass die Widerstands-Temperatur-Kennlinie die Selbstregelung ungünstig beeinflusst.However, it can also be particularly useful if the temperature of the wiper blade is regulated. Even if the invention can basically do without temperature control, which is mainly due to the self-regulating properties due to the positive temperature coefficient, an additional controller can bring advantages. This is the case in particular when there are particularly strongly varying temperatures, so that the resistance-temperature characteristic has an unfavorable effect on the self-regulation.
Der Erfindung liegt die überraschende Erkenntnis zugrunde, dass eine Erwärmung eines Wischerblattes in kontrollierter Weise durch die Beschaf enheit des Kunststoffes eines Wischerkopfes erreicht werden kann. Indem dem Kunststoff eine elektrische Leitfähigkeit vermittelt wird, wobei der Widerstand einen positiven Te peraturko- effizienten aufweist, ist es möglich, den Scheibenwischer durch das Anlegen einer konstanten Spannung zu enteisen; gleichzeitig kommt es zu einem Selbstreσelungseffekt . ZeichnungThe invention is based on the surprising finding that heating of a wiper blade can be achieved in a controlled manner by the nature of the plastic of a wiper head. By imparting electrical conductivity to the plastic, the resistance having a positive temperature coefficient, it is possible to deice the windshield wiper by applying a constant voltage; at the same time there is a self-regulating effect. drawing
Die Erfindung wird nun mit Bezug auf die begleitende Zeichnung anhand einer bevorzugten Ausführungsform bei- spielhaft erläutert.The invention will now be explained by way of example with reference to the accompanying drawing using a preferred embodiment.
Dabei zeigt:It shows:
Figur 1 eine perspektivische Ansicht eines Wischerblat- tes.Figure 1 is a perspective view of a wiper blade.
Beschreibung der bevorzugten AusführungsbeispieleDescription of the preferred embodiments
Figur 1 zeigt ein Wischerblatt 10 in stark schematisierter perspektivischer Darstellung. Das Wischerplatt 10 hat einen Wischerkopf 12. Mit diesem Wischerkopf 12 wird das Wischerblatt 10 an einem nicht dargestellten Wischerarm befestigt. An dem Wischerkopf ist eine Bodenplatte 22 be- festigt, welche über einen Kippsteg 24 eine Wischlippe 26 fragt. Der Wischerkopf 12 weist zwei in Längsrichtung parallel zum 'Wischerblatt ausgebildete Kanäle 18, 20 auf. Ferner sind an dem Wischerkopf 12 elektrische Anschlüsse vorgesehen, wobei ein elektriscner Ansohluss 16 in Figur 1 dargestellt ist. Die Rückenleiste 14 des Wischerhopfes 12 ist elektrisch leitend ausgebildet.Figure 1 shows a wiper blade 10 in a highly schematic perspective view. The wiper plate 10 has a wiper head 12. With this wiper head 12, the wiper blade 10 is attached to a wiper arm, not shown. A base plate 22 is fastened to the wiper head and asks a wiper lip 26 via a tilting web 24. Two of the wiper head 12 has parallel to the 'wiper blade formed channels 18, 20 in the longitudinal direction. Furthermore, electrical connections are provided on the wiper head 12, an electrical socket 16 being shown in FIG. 1. The back bar 14 of the wiper head 12 is designed to be electrically conductive.
Der erfindnngsgemäße Wischerkopf 12 ist vorzugsweise ein Wischerkopf 22 aus thermoplastisch hergestelltem Kuns - stoff. Diesem Kunststoff ist eine elektrische Leitfähigkeit vermittelt, so dass der Wischerkopf 12 insgesamt e- lektrisch ieitfähig ist, insbesondere der Bereich der Rü~ c βnieiste 14. De Wischerkcpf 12 ist eine elektrische Leitfähigkeit in der Weise vermittelt, dass der elektrische Widerstand einen positiven Temperaturkoeffizienten aufweist. Dies kann beispielsweise durch das Zusetzen von Sfahlfasern zu dem thermoplastischen Kunststoff erreicht werden. Indem neben dem Wischerkopf 12 auch andere Komponenten des Wischerblattes 10 aus einem ähnlichen oder demselben thermoplastischen Kunststoff gefertigt sind, beispielsweise die Bodenleiste 22, der Kippsteg 24 und die Wischerlippe 26, ist es möglich, das Wischerblatt 10 insgesamt durch Anlegen einer konstanten elektrischen Spannung in selbstregelnder Weise zu erwärmen.The wiper head 12 according to the invention is preferably a wiper head 22 made of thermoplastic plastic. Electrical conductivity is imparted to this plastic, so that the wiper head 12 is electrically conductive overall, in particular the area of the back 14. The wiper head 12 is electrical Conductivity mediated in such a way that the electrical resistance has a positive temperature coefficient. This can be achieved, for example, by adding pile fibers to the thermoplastic. By, in addition to the wiper head 12, other components of the wiper blade 10 are also made of a similar or the same thermoplastic material, for example the base strip 22, the tilting web 24 and the wiper lip 26, it is possible for the wiper blade 10 as a whole to be self-regulating by applying a constant electrical voltage Way to warm.
Die vorhergehende Beschreibung der Auεführungsbeispiele gemäß der vorliegenden Erfindung dient nur zu illustrati- ven Zwecken und nicht zum Zwecke der Beschränkung der Erfindung. Im Rahmen der Erfindung sind verschiedene Änderungen und Modifikationen möglich, ohne den umfang der Erfindung sowie ihre Äquivalente zu verlassen. The preceding description of the exemplary embodiments according to the present invention serves only for illustrative purposes and not for the purpose of restricting the invention. Various changes and modifications are possible within the scope of the invention without leaving the scope of the invention and its equivalents.
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10194660T DE10194660D2 (en) | 2000-10-28 | 2001-09-26 | Wiper blade and method for heating a wiper blade |
| AU2002213813A AU2002213813A1 (en) | 2000-10-28 | 2001-09-26 | Wiper blade and method for heating a wiper blade |
| EP01982146A EP1248717A1 (en) | 2000-10-28 | 2001-09-26 | Wiper blade and method for heating a wiper blade |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000153686 DE10053686A1 (en) | 2000-10-28 | 2000-10-28 | Wiper blade and method for heating a wiper blade |
| DE10053686.7 | 2000-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002034589A1 true WO2002034589A1 (en) | 2002-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2001/003694 Ceased WO2002034589A1 (en) | 2000-10-28 | 2001-09-26 | Wiper blade and method for heating a wiper blade |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1248717A1 (en) |
| AU (1) | AU2002213813A1 (en) |
| DE (2) | DE10053686A1 (en) |
| WO (1) | WO2002034589A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2879920B1 (en) * | 2012-08-02 | 2020-04-08 | Federal-Mogul S.a. | Windscreen wiper device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3489884A (en) * | 1966-12-28 | 1970-01-13 | Texas Instruments Inc | Heated windshield wiper and blade therefor |
| US4670933A (en) * | 1985-10-28 | 1987-06-09 | Tibor Toplenszky | Heated windshield wiper |
| US5539951A (en) * | 1995-12-08 | 1996-07-30 | Guell; Ronald R. | Wiper blade assembly including heating and fluid dispensing means |
| US5728322A (en) * | 1995-09-22 | 1998-03-17 | Kim; Yong Chul | Conductive polymeric coatings with positive temperature coefficients of resistivity |
| US5749118A (en) * | 1993-02-05 | 1998-05-12 | Holland; Dewey T. | Heated wiper blade |
| GB2350552A (en) * | 1999-06-03 | 2000-12-06 | Rover Group | Heated washer assembly for motor vehicle glazing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3644427A1 (en) * | 1986-12-24 | 1988-07-07 | Swf Auto Electric Gmbh | WIPER BLADE, IN PARTICULAR FOR WINDOW WIPER SYSTEMS ON MOTOR VEHICLES |
| DE29611640U1 (en) * | 1996-07-04 | 1997-11-06 | Schauß, Michael, 69509 Mörlenbach | Heated wiper blade |
| DE19636796A1 (en) * | 1996-09-11 | 1998-03-12 | Thomas Olbrich | Vehicle heated windscreen wiper blade |
| US5957384A (en) * | 1997-08-26 | 1999-09-28 | Lansinger; Jere Rask | Windshield heated wiping system |
| DE19743078A1 (en) * | 1997-09-30 | 1999-04-01 | Martin Kloeber | Deicing equipment for removing ice and snow from vehicle windscreens |
-
2000
- 2000-10-28 DE DE2000153686 patent/DE10053686A1/en not_active Withdrawn
-
2001
- 2001-09-26 AU AU2002213813A patent/AU2002213813A1/en not_active Abandoned
- 2001-09-26 DE DE10194660T patent/DE10194660D2/en not_active Expired - Fee Related
- 2001-09-26 WO PCT/DE2001/003694 patent/WO2002034589A1/en not_active Ceased
- 2001-09-26 EP EP01982146A patent/EP1248717A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3489884A (en) * | 1966-12-28 | 1970-01-13 | Texas Instruments Inc | Heated windshield wiper and blade therefor |
| US4670933A (en) * | 1985-10-28 | 1987-06-09 | Tibor Toplenszky | Heated windshield wiper |
| US5749118A (en) * | 1993-02-05 | 1998-05-12 | Holland; Dewey T. | Heated wiper blade |
| US5728322A (en) * | 1995-09-22 | 1998-03-17 | Kim; Yong Chul | Conductive polymeric coatings with positive temperature coefficients of resistivity |
| US5539951A (en) * | 1995-12-08 | 1996-07-30 | Guell; Ronald R. | Wiper blade assembly including heating and fluid dispensing means |
| GB2350552A (en) * | 1999-06-03 | 2000-12-06 | Rover Group | Heated washer assembly for motor vehicle glazing |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1248717A1 (en) | 2002-10-16 |
| DE10053686A1 (en) | 2002-06-06 |
| AU2002213813A1 (en) | 2002-05-06 |
| DE10194660D2 (en) | 2003-10-23 |
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