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Wiper blade for a windscreen wiper frame

A windshield wiper and wiper technology, which is applied in the directions of vehicle cleaning, vehicle maintenance, transportation and packaging, can solve the problems of complexity and long manufacturing process of wiper blades, and achieves improved characteristics, increased proportion, and easy handling. Effect

Active Publication Date: 2019-04-02
VALEO SYST DESSUYAGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, current solutions often use rubbers that have been functionalized upstream of the rubber vulcanization and curing operation, making the wiper blade manufacturing process longer and more complex

Method used

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  • Wiper blade for a windscreen wiper frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The wiper blade 1 according to the invention comprises a material based on:

[0041] -Natural rubber, and

[0042] - at least one additive.

[0043] Additives are, for example, plasticizers of biological origin.

[0044] Plasticizers are what are used to make the material more flexible and / or easier to use in making wiper blades. Typically, the plasticizer is usually oil. Here, according to the invention, the plasticizer is an oil of biological origin.

[0045] Oils of biological origin are chosen such that in (cal / cm 3 ) 1 / 2 The difference between the measured solubility parameters of oils of biological origin and that of natural rubber is less than or equal to 2 (cal / cm 3 ) 1 / 2 , or even less than or equal to 1.5(cal / cm 3 ) 1 / 2 , or even less than or equal to 1(cal / cm 3 ) 1 / 2 , or even less than or equal to 0.5(cal / cm 3 ) 1 / 2 .

[0046] The solubility parameter of natural rubber is 8.3 (cal / cm 3 ) 1 / 2 .

[0047] In other words, the solubility paramete...

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Abstract

The invention concerns a wiper blade (1) for a windscreen wiper frame, at least a portion of said blade (1) comprising a material made from natural rubber and at least one additive. The wiper blade ischaracterised in that said additive is at least a bio-sourced plasticiser and in that said blade comprises, as the only rubber, said natural rubber in the vulcanised state, said vulcanised rubber being obtained by vulcanising a non-functionalised natural rubber. The invention also concerns a windscreen wiper frame comprising such a wiper blade and a wiper system comprising the windscreen wiper frame.

Description

technical field [0001] The present invention relates to a wiper blade for a windscreen wiper, in particular a wiper blade made of a material of biological origin. Background technique [0002] Motor vehicles are often equipped with windshield wiper systems to provide washing and / or wiping of the windshield without interfering with the driver's view of his surroundings. The wiper blades of such systems are usually driven by arms performing reciprocating angular movements. These blades rub against the outer surface of the glass, such as the windshield, and dislodge the water, moving it out of the driver's field of vision. In traditional form the wiper is made in the form of an articulated arm which holds the wiper blade at several points. In a newer form called "flat blade", the wiper is made as a semi-rigid component that holds the wiper blade along its entire length. [0003] As a rule, wiper blades are made of elastically deformable materials based on elastomers suppleme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60S1/38C08K3/34C08L7/00
CPCC08K3/34C08L7/00B60S2001/3829C08K2201/018C08K3/36C08K5/0016C08K13/02B60S1/38
Inventor P.阿苏伊德
Owner VALEO SYST DESSUYAGE