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Method for manufacturing a pair of wiping members

One component, one pair technology, applied in the field of windshield wiper blades, can solve the problems of no longer beneficial advantages, expensive ion bombardment treatment, etc., to improve sound comfort, increase service life, and save time.

Active Publication Date: 2015-08-26
VALEO SYST DESSUYAGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this ion bombardment treatment is expensive and difficult to handle, since each blade is bombarded individually, especially when it is desired to treat locally on the wipe edge
[0006] However, in the device for processing a pair (cleave is achieved after surface treatment), the advantages obtained by processing all or some wiping edges (parts in contact with the windshield) can no longer be benefited

Method used

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  • Method for manufacturing a pair of wiping members
  • Method for manufacturing a pair of wiping members
  • Method for manufacturing a pair of wiping members

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0104] Example 1: Effect of method characteristics on durability of acoustic performance

[0105] Acoustic performance was tested on new specimens (initial noise occurrence) and worn specimens (noise occurrence after 50000 cycles). The abrasion of the specimen is performed by means of an alternating friction machine which moves 10 cm on a stroke of 10 cm 2 Squared glass plate. The sample is 15g.cm -1 The pressure is positioned against the glass plate at a rate of 45 back and forth motions per minute (one cycle).

[0106]

[0107] Table 1: Comparison of occurrence of vibration noise obtained by each wiping member

[0108] By comparing, on the one hand, samples A and B, and on the other hand, samples C and D, Table 1 shows that the occurrence of vibration noise is reduced when the slots are bombarded with ions. Thus, by carrying out the ion bombardment step after the pre-cracking step, the acoustic comfort of the vehicle occupants is improved regardless of the wear of the...

example 2

[0111] Example 2: Effect of method characteristics on wear

[0112] Styles A through D were worn through the alternating friction machine described in Example 1. Wear is monitored hourly. Make sure to get 0.5mm 3 The wear volume of the cycle number. This volume corresponds to significant wear beyond which the wiping performance deteriorates.

[0113]

[0114] Table 2: Comparison of abrasion resistance (number of cycles to obtain abrasion of 0.5 mm3) obtained by each wiping member.

[0115] By comparing, on the one hand, models A and B, and on the other hand, models C and D, Table 2 shows that the wear resistance increases when the slots are bombarded with ions. Thus, by performing the ion bombardment step after the pre-cracking step, the resistance of the component is improved.

[0116] By comparing, on the one hand, samples A and C, and on the other hand, samples B and D, Table 2 shows that the presence of a coating, especially a graphite coating, improves the wear re...

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Abstract

According to the invention, the production of a wiping member (10) made from an elastomer-based material (M) comprises the use of a pair (38) of wiping members (10) joined to one another. At least one notch (64, 66) is previously provided in the aforementioned pair (38), so that the members (10) can be subsequently separated from one another. At least part of an outer surface (68) of the notch (64, 66) is treated by means of ion bombardment.

Description

technical field [0001] The invention relates to a wiping member for a surface to be wiped, in particular a windscreen wiper blade for a motor vehicle, the member comprising an elastomer(s) based material with a specific surface treatment. The invention also relates to a method for and obtaining this component and its use. Background technique [0002] In the field of elastomer-based technical materials, research is generally aimed at the improvement of the mechanical properties and / or the material appearance of parts formed from these materials. [0003] In the case of wiper blades for motor vehicle windscreen wipers, these blades must have properties, especially at the surface, that enable efficient wiping of the windscreen over which the blade moves. These blades must also be acoustically comfortable for the occupants of the motor vehicle in use, ie the generation of sound waves and thus noise must be avoided. [0004] Known from the prior art are methods for manufacturi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12B60S1/38
CPCC08J7/123B60S1/3848B60S2001/3898B60S2001/3829
Inventor A.布朗F.布雷塔格诺尔S.德佩克斯
Owner VALEO SYST DESSUYAGE