DE1480094C3

DE1480094C3 - Wiper blades for windshield wipers, in particular for high-speed motor vehicles

Info

Publication number: DE1480094C3
Application number: DE19631480094
Authority: DE
Inventors: Willy Bock; Alfred Kohler
Original assignee: SWF Spezialfabrik fuer Autozubehoer Gustav Rau GmbH
Current assignee: SWF Auto Electric GmbH
Priority date: 1963-10-22
Filing date: 1963-10-22
Publication date: 1975-04-10
Also published as: DE1480094B2; BE687826A; DE1480094A1

Description

3 43 4

sprechend ausgebildete Distanzstücke in der richtigen und einem Hauptbügel 3. Der Hauptbügel 3 wirdspeaking trained spacers in the correct and one main bracket 3. The main bracket 3 is

Stellung zueinander gehalten werden. durch zwei streifenförmige Längswände 4 und 5 ge-Position to each other are held. by two strip-shaped longitudinal walls 4 and 5

Durch die erfindungsgemäße Ausbildung und An- bildet, die durch an ihren Enden angeordnete Diordnung der Bügel wird infolge des durch die Luft- stanzstücke 6 und ein mittleres Distanzstück 7, das strömung an einer Längswand auftretenden Stau- 5 gleichzeitig als Lager- und Verbindungsteil für einen druckes eine Kraftkomponente erzeugt, die dem Auf- Scheibenwischerarm 8 dient, gebildet wird. Die beitrieb des Wischblattes entgegengerichtet ist, wodurch den streifenförmigen Längswände 4 und 5 des Hauptauch bei hohen Fahrgeschwindigkeiten der ausrei- bügeis 3 sind gegeneinander dachförmig geneigt. Die chende Anpreßdruck gewährleistet ist, obwohl die Distanzstücke 6 und 7 sind entsprechend gestaltet.
Bügel mit einfachen Produktionsmitteln hergestellt io Die Zwischenbügel 2 haben ebenfalls einen dachwerden, wobei der kostenerhöhende Verschnitt weg- förmig ausgebildeten äußeren Hebelarm 2' und sind fällt. in Schlitze 10 der beiden Distanzstücke 6 eingesetztDue to the inventive design and formation, the arrangement of the stirrups arranged at their ends, as a result of the flow occurring on a longitudinal wall through the air punch pieces 6 and a central spacer 7, the damming 5 simultaneously acts as a bearing and connecting part for a pressure generates a force component that serves the wiper arm 8 is formed. The drive of the wiper blade is directed in the opposite direction, as a result of which the strip-shaped longitudinal walls 4 and 5 of the main also at high driving speeds of the exhaust ice 3 are inclined towards one another in a roof-like manner. The corresponding contact pressure is guaranteed, although the spacers 6 and 7 are designed accordingly.
Brackets produced with simple means of production io The intermediate brackets 2 also have a roof, whereby the cost-increasing scrap is path-shaped outer lever arm 2 'and falls. inserted into slots 10 of the two spacers 6

Die Erfindung wird an Hand eines in der Zeich- und um Befestigungsnieten 9 schwenkbar im Haupt-The invention is based on a pivotable in the drawing and around fastening rivets 9 in the main

nung dargestellten Ausführungsbeispieles näher er- bügel 3 gelagert,embodiment shown in more detail on bracket 3,

läutert. Es zeigt 15 Wie in Fig. 2 dargestellt ist, entsteht durch diepurifies. It shows 15 As shown in Fig. 2, arises from the

F i g. 1 ein erfindungsgemäßes Wischblatt für Luftströmung S bei geeigneter Neigung der Längs-F i g. 1 a wiper blade according to the invention for air flow S with a suitable inclination of the longitudinal

Scheibenwischer in perspektivischer Darstellung und wände des Wischblattes ein Staudruck, der eineWindshield wiper in perspective and walls of the wiper blade a dynamic pressure, the one

Fig.2 einen Schnitt durch den Hauptbügel des KraftkomponenteP erzeugt, die der Auftriebskraft,Fig. 2 is a section through the main yoke of the force component P generated, which corresponds to the lift force,

Wischblattes mit einer Darstellung der Kräfte. die bei der Gestaltung des Hauptbügels 3 überwie-Wiper blade with a representation of the forces. which predominate in the design of the main bracket 3

Das Wischblatt für Scheibenwischer besteht aus ao gend durch den Wischgummi des ScheibenwischersThe wiper blade for windshield wipers consists of ao gend through the wiper rubber of the windshield wiper

einem Wischstreifen 1, den beiden Zwischenbügeln 2 erzeugt wird, entgegengerichtet ist.a wiping strip 1, which is produced by the two intermediate bars 2, is directed in the opposite direction.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

which consists of an elastic wiping strip and claims: a pressure distribution device formed from a main bracket and two intermediate brackets,

1. Wiper blade for windshield wipers, -in particular- whereby the longitudinal walls of all brackets in the wedere for high-speed vehicles that are inclined from 5 essential ■ roof-shaped to each other and an elastic wiper strip and one made of one piece. The length of his Main bracket and one or more walls of the one-piece bracket with one another Intermediate brackets formed a pressure distribution angle of 45 °, but with the outgoing free direction exists, through which a lifting of the ends of the bracket a bevel in the longitudinal direction Windshield wipers from the windshield io of the bracket have and the bracket claw-like shark-also At high driving speeds, it can be rented for the spring ends inserted in the wiper strip or at least reduced, with the rails having. This known wiper blade design longitudinal walls The bracket can be roof-shaped and can also have brackets which, in the cross section of the windshield, diverge from one another and are essentially V-shaped.

are inclined, characterized in that 15 The roof-shaped tapering longitudinal walls of the

that the longitudinal walls (4 and 5) of the bracket are as a lumpy bracket of the known windshield wipers

narrow, separate sheet metal strips do not affect the inclination in their design

are formed, which limited parallel in their longitudinal axis, but also point perpendicular to

run towards each other and use spacers (6 windshield-directed edge strips to

and 7), which at the same time act as bearings for the intermediate end areas in the claw-like brackets

shackle (2) or as a connecting means for _; pass over.

the wiper arm (8) are designed to be connected to one another in that the roof-shaped tapered ends are longitudinally connected are. walls of the bracket together with the edge strips.

2. Wiper blade according to claim 1, thereby forming a closed unit, it is indeed given indicates .that as bearings for the 25 that the wind on the windshield Intermediate bracket (2) formed spacers facing away from the surface of the bracket a corresponding (6) consist of plastic and slots (10) can cause lowering pressure, but in have, in which the intermediate bracket (2) used disadvantageously a buoyancy force through the and generated around fastening rivets (9) pivotable in the airstream, which is greater than the contact pressure Main bracket (3) are stored. 3 ° can be at high speed, creating a

Lifting the wiper is possible. The lifting of these wiper blades occurs especially then, as

this is also the case with brackets with a U-profile,

if the wiper blades are in an approximately horizontal • 35 right position and through the air currents

The invention relates to a wiper blade for the windshield which are acted upon wiper, especially for high-speed motorists - the mechanical ones and those generated by wind pressure, that from an elastic wiper strip and targeted contact pressure overcompensate, from one of a main bracket and one or apart from the poor aerodynamic

pressure distribution formed by several intermediate brackets is the behavior of the brackets during operation treatment device consists, through which a lifting of the manufacture of these known windshield wipers only Windshield wipers from the windshield also involve considerable effort. One at one high travel speeds are avoided or there are several for the different brackets is at least reduced, the longitudinal walls of the multi-part follow-up tools required to make the Bü-brackets In the shape of a roof and towards the windshield, punch gel 45 out of a sheet of metal, pull it and with it are inclined towards each other. to be able to provide the corresponding recesses

Due to the high travel speeds of the. nen. On the other hand, by the at the ends of the Currently developed motor vehicles, it is unformed bracket-molded claw-like brackets that It is absolutely necessary on the windshield for the driver that includes the spring rail inserted in the wiper strip to create perfect visibility. It 50 sen, an unacceptably large waste of material there has therefore long been a demand for a windshield wiper to be made which incurs additional costs to be used, which also works in the case of a fast moving wall.

It is an object of the invention to provide a wiper blade for vehicles

secures the surface of the windshield. Windshield wipers of the type mentioned above

It is a fact, however, that a windshield wiper 55 can do this despite the simplest and cheapest manufacture high travel speeds as a result of the temple development on him by the design and arrangement Acting air currents lift forces from its bracket receives as little lift as possible is set that is greater than the contact pressure of the Wi- and the windshield even with high shear blades the windshield can be cleaned perfectly, nen, whereby the wiper blade from the wind- 60 The object is achieved in that the longitudinal shield lifts off and the same no longer protruding walls of the bracket as narrow, separated from each other is cleaned accordingly. Sheet metal strips are formed, which in their longitudinal

Various windshield wiper axes have already run parallel to each other and have become the one such aerodynamic stamped pieces, which also serve as bearings for the Zwi-shape have that both the contact pressure of the 65's bracket or as a connecting means for the Wi-wiper are formed on the windshield and low-shear, connected to each other a certain lift force is reduced. are. There are now only two left for one bracket

A wiper blade for windshield wipers is known, simple stamped parts are required, which are