DE3132431A1 - Windscreen for motor vehicles - Google Patents

Windscreen for motor vehicles

Info

Publication number
DE3132431A1
DE3132431A1 DE19813132431 DE3132431A DE3132431A1 DE 3132431 A1 DE3132431 A1 DE 3132431A1 DE 19813132431 DE19813132431 DE 19813132431 DE 3132431 A DE3132431 A DE 3132431A DE 3132431 A1 DE3132431 A1 DE 3132431A1
Authority
DE
Germany
Prior art keywords
windshield
windscreen
heat exchanger
motor vehicles
thermal valve
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Withdrawn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
DE19813132431
Other languages
German (de)
Inventor
Rudolf 7032 Sindelfingen Andres
Günter Dipl.-Ing. Gmeiner
Guntram Dipl.-Ing. 7031 Aidlingen Huber
Heinz 7000 Stuttgart Knoll
Wolfgang 7032 Sindelfingen Odebrecht
Albert Dipl.-Ing. 7400 Tübingen Stolz
Wolfgang 7031 Magstadt Volz
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19813132431 priority Critical patent/DE3132431A1/en
Publication of DE3132431A1 publication Critical patent/DE3132431A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/0402Wipers or the like, e.g. scrapers completely or partially concealed in a cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00Windows; Windscreens; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/0475Cleaning of wiper blades
    • B60S1/0477Arrangement for deicing or for removing debris from wiper blades
    • B60S1/048Arrangement for deicing or for removing debris from wiper blades with a heating device for the wiper parking position

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

In the case of wipers of motor vehicles which in their position of rest lie countersunk on an area of the windscreen lying underneath the rear edge of a front bonnet, there is in particular the risk that the wiper blades become frozen to the window as a result of snow or the like which has found its way in, and that they thus become inoperative. In order to remedy this, an arrangement is proposed in which a planar heat exchanger which is connected to the coolant circuit of an internal combustion engine of the vehicle is arranged on the inside of the windscreen, which heat exchanger can preferably be controlled in an infinitely adjustable fashion by a thermovalve which is controlled as a function of the external temperature.

Description

Windschutzscheibe für Kraftwagen"Motor vehicle windshield "

Die Erfindung betrifft eine Windschutzscheibe für Kraftwagen, die in einem unterhalb der Hinterkante einer vorderen Haube liegenden, der versenkten Ablage von Scheibenwischerblättern in ihrer Ruhestellung dienenden Bereich beheizbar ausgebildet ist.The invention relates to a windshield for motor vehicles that in one lying below the rear edge of a front hood, which is sunk Storage of windshield wiper blades in their rest position can be heated is trained.

Eine derartige Windschutzscheibe ist bereits der europäischen Patentanmeldung 0 013 970 als 1bekannt zu entnehmen. Dort ist für den unteren Scheibenbereich zum Verhindern des Festfrierens der abgelegten Scheibenwischerblätter eine elektrische Widerstandsheizung vorgesehen, die jedoch für eine praktische Verwendung wegen der damit verbundenen hohen Belastung des elektrischen Bordnetzes des Fahrzeugs nicht geeignet ist.Such a windshield is already the European patent application 0 013 970 known as 1. There is for the lower pane area to Preventing the discarded windshield wiper blades from freezing to an electric Resistance heating provided, however, for practical use because of the The associated high load on the vehicle's electrical system is not suitable is.

Bei entsprechend ungünstigen Witterungsbedingungen reicht es nämlich nicht aus, eine solche Heizung lediglich von Zeit zu Zeit einmal einzuschalten. Bs muß vielmehr, um die ständige, sofortige Einsatzbereitschaft der Scheibenwischer zu garantieren, während des gesamten Fahrbetriebs eine Beheizung des der Ablage der Wischerblätter dienenden Scheibenbereichs erfolgeii, was wegen der unter solchs Betriebsbedingungen oftmals ohnehin schon hohen Belastung des Bordnetzes nur durch Einsatz eines wesentlich verstärkten Generators möglich wäre, was aber wiederum eine erhöhte Leistung für den Antrieb des Generators, ein erhöhtes Gewicht desselben und insgesamt einen wesentlichenfinanziellen Aufwand bedeuten würde.In the case of correspondingly unfavorable weather conditions it is enough it is not enough to just switch on such a heater from time to time. Rather, it is necessary to ensure that the windshield wipers are always ready for immediate use to guarantee heating during the entire driving operation of the window area serving to deposit the wiper blades, which is because of the already high load on the on-board network under such operating conditions would only be possible by using a significantly more powerful generator, but what in turn, increased power for driving the generator, increased weight the same and overall would mean a significant financial expense.

Der vorliegenden Erfindung lag daher die Aufgabe zugrunde, eine beheizbare Windschuczscheibe der eingangs definierten Gattung so auszugestalten, daß bei entsprechenden Witterungsbedingungen eine ständige Beheizung ihres der Wischerblattablage dienenden Bereichs auf einfache Weise sichergestellt ist.The present invention was therefore based on the object of a heatable Design windshield of the genus defined at the outset so that with appropriate Weather conditions a constant heating of the wiper blade tray Area is ensured in a simple manner.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß atif der Innenseite der Winlschutzscheibe ein an den Kühlmittelkreislauf einer Brennkraftmaschine des Fahrzeugs angeschlossener Flächen-Wärmetauscher angeordnet ist, der durch ein in Abhängigkeit von der Außentemperatur gesteuertes Thermoventil vorzugsweise stufenlos regelbar ist.This object is achieved according to the invention in that atif the inside the Winlschutzscheibe a to the coolant circuit of an internal combustion engine Vehicle-connected surface heat exchanger is arranged, which is through an in Thermal valve controlled depending on the outside temperature, preferably infinitely variable is adjustable.

Das Thermoventil ist dabei vorzugsweise als Scheibenventil ausgebildet, dessen Schieber über ein mit einem Stößel versehenes Dehnstoffelement, das gegen Federdruck arbeitet, verstellbar ist.The thermal valve is preferably designed as a disc valve, its slide via an expansion element provided with a plunger, which against Spring pressure works, is adjustable.

Der Gegenstand der Erfindung soll im folgenden anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert werden.The object of the invention is to be based on one in the Drawing schematically illustrated embodiment will be explained in more detail.

In der Zeichnung zeigen: Fig. 1 schematisch den Gesamtaufbau einer erfindungsgemäßen Windschutzscheibenheizung,und Fig. 2 ein zur Steuerung derselben geeignetes Thermoventil.The drawings show: FIG. 1 schematically the overall structure of a Windshield heater according to the invention, and FIG. 2 shows a control for the same suitable thermal valve.

Eine wassergekühlte Brennkraftmaschine 1 ist über dem Heizwasservor- und -rücklauf dienende Rohrleitungen 2, 3 unter Zwischenschaltung einer Heizwasserpumpe 4 mit einem der Beheizung des nicht dargestellten Fahrzeuginnenraumes dienenden Wärmetauscher 5 verbunden.A water-cooled internal combustion engine 1 is above the Heizwasservor- and return pipes 2, 3 with the interposition of a heating water pump 4 with one used to heat the vehicle interior, not shown Heat exchanger 5 connected.

In einem unteren Bereich der Windschutzscheibe 6, die der Ablage eines Scheibenwischers 7 in seiner Ruhestellung dient, ist auf deren Innenseite ein Flächenwärmetauscher 8 angeordnet, der über Rohrleitungen 9, 10 unter Zwischenschaltung eines von der Außentemperatur beaufschlagten Thermoventils 11 gleichfalls an den Kühlmittelkreislauf der Brennkraftmaschine 1 angeschlossen ist.In a lower area of the windshield 6, which is the storage of a The wiper 7 is used in its rest position, is a surface heat exchanger on the inside 8 arranged, the pipelines 9, 10 with the interposition of one of the Outside temperature applied thermal valve 11 also to the coolant circuit the internal combustion engine 1 is connected.

Wie aus Fig. 2 der Zeichnung ersichtlich ist, kann das Thermoventil 11 als Scheibenventil mit einer Durchlaßöffnung 12 und einem diese verschließenden Schieber 13 ausgebildet nein. Zur betätigung des Schiebers 13 ist dieser mit einem um eine Achse 14 schwenkbaren Hebel 15 verbunden, auf den ein mit einem Stößel 16 versehenes Dehnstoffelement 17 gegen die Kraft einer die Rückstellung besorgenden Feder 18 einwirkt. Durch dieses Dehnstoffelement 17 wird bei Temperaturanstieg.die Durchöffnung 12 verschlossen, während sie bei entsprechendem Temperaturabfall über die Feder 18 geöffnet wird.As can be seen from Fig. 2 of the drawing, the thermal valve 11 as a disc valve with a passage opening 12 and a closing it Slide 13 formed no. To operate the slide 13 this is with a Connected about an axis 14 pivotable lever 15, on which a plunger 16 provided expansion element 17 against the force of a restoration worrisome Spring 18 acts. Through this expansion element 17, when the temperature rises Passage 12 closed while at corresponding temperature drop is opened via the spring 18.

Das Thermoventil 11 ist dabei vorzugsweise so ausgelegt, daß unterhalb einer Temperatur von etwa +50C der Heizwasserkreislauf durch den Flächenwärmetauscher 8 voll geöffnet und oberhalb einer Temperatur von etwa +15 0C ganz geschlossen ist.The thermal valve 11 is preferably designed so that below a temperature of about + 50C the heating water circuit through the surface heat exchanger 8 is fully open and completely closed above a temperature of around +15 0C.

LeerseiteBlank page

Claims (2)

A n s p r ü c h a 1. Windschutzscheibe für Kraftwagen, die in einem unterhalb der Hinterkante einer vorderen Haube liegenden, der versenkten Ablage von Scheibenwischerblättern in ihrer Ruhestellung dienenden Bereich beheizbar ausgebildet ist, d a d u r c h g e k e n n z e i c h n e t, daß auf der Innenseite der Windschutzscheibe (6) ein an den Kühlmittelkreislauf einer Brennkraftmaschine (1) des Fahrzeugs angeschlossener Flächen-Wärmetauscher (8) angeordnet ist, der durch ein in Abhängigkeit von der Außentemperatur gesteuertes Thermoventil (11) vorzugsweise stufenlos regelbar ist.A n p r ü c h a 1. Windshield for motor vehicles that are in one below the rear edge of a front hood, the recessed shelf of windshield wiper blades in their rest position serving area formed heatable is that on the inside of the windshield (6) one connected to the coolant circuit of an internal combustion engine (1) of the vehicle Surface heat exchanger (8) is arranged by a depending on the Outside temperature controlled thermal valve (11) is preferably continuously adjustable. 2. Beheizbare Windschutzscheibe nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß das Thermoventil (11) als Scheibenventil ausgebildet ist, dessen Schieber (13) über ein mit einem Stößel (16) versehenes Dehnstoffelement (17), das gegen Federdruck weder 18) arbeitet, verstellbar ist.2. Heatable windshield according to claim 1, d a d u r c h g e It is not indicated that the thermal valve (11) is designed as a disk valve is, the slide (13) via an expansion element provided with a plunger (16) (17), which neither 18) works against spring pressure, is adjustable.
DE19813132431 1981-08-17 1981-08-17 Windscreen for motor vehicles Withdrawn DE3132431A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813132431 DE3132431A1 (en) 1981-08-17 1981-08-17 Windscreen for motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813132431 DE3132431A1 (en) 1981-08-17 1981-08-17 Windscreen for motor vehicles

Publications (1)

Publication Number Publication Date
DE3132431A1 true DE3132431A1 (en) 1983-03-03

Family

ID=6139473

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813132431 Withdrawn DE3132431A1 (en) 1981-08-17 1981-08-17 Windscreen for motor vehicles

Country Status (1)

Country Link
DE (1) DE3132431A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339892A1 (en) * 1983-11-04 1985-05-23 Adam Opel AG, 6090 Rüsselsheim DEFROSTER SYSTEM FOR A MOTOR VEHICLE
EP0288770A2 (en) * 1987-04-18 1988-11-02 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Automotive vehicle
DE102022001982A1 (en) 2022-06-08 2022-07-28 Mercedes-Benz Group AG Device for heating the storage area for at least one windshield wiper

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339892A1 (en) * 1983-11-04 1985-05-23 Adam Opel AG, 6090 Rüsselsheim DEFROSTER SYSTEM FOR A MOTOR VEHICLE
EP0288770A2 (en) * 1987-04-18 1988-11-02 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Automotive vehicle
EP0288770A3 (en) * 1987-04-18 1990-08-29 Bayerische Motoren Werke Aktiengesellschaft Automotive vehicle
DE102022001982A1 (en) 2022-06-08 2022-07-28 Mercedes-Benz Group AG Device for heating the storage area for at least one windshield wiper

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OP8 Request for examination as to paragraph 44 patent law
8130 Withdrawal