Wiper Blade Support Mount Recesses for Flexibility

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Solution Overview

Problem

Conventional windscreen wiper systems lack sufficient flexibility, especially in extreme climatic conditions, due to insufficient design features in the support frame, which affects their performance in clearing water and maintaining aerodynamics.

Innovation Solution

A support mount for the windscreen wiper blade with recesses facilitating bending, enhancing flexibility in both longitudinal and torsional directions, and featuring a design that reduces friction during assembly with an aerodynamic deflector, including lateral fins with harpoons and an open upper housing with complementary recesses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the upper housing of the support frame is closed, then structural strength is improved, but flexibility in extreme climatic conditions deteriorates

Engineering Contradiction:
Improvestructural strengthVSAvoidflexibility in extreme climatic conditions
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by making the upper housing open specifically in the middle section while keeping other areas closed. This localized opening provides flexibility where needed (in extreme cold) while maintaining structural strength in other critical areas of the housing.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The upper housing is segmented into open and closed sections. The middle portion is opened to allow flexibility, while the rest of the housing remains closed to maintain structural integrity. This segmentation resolves the contradiction between strength and flexibility.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the support frame is made rigid, then structural stability is improved, but assembly friction with the deflector increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidassembly friction
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The patent introduces recesses at specific locations (second means for retaining the deflector) to reduce friction during assembly. These localized recesses allow the deflector to slide in more easily without compromising the overall structural stability of the rigid support frame.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If recesses are added to the second means, then flexibility and assembly ease are improved, but device complexity increases

Engineering Contradiction:
ImproveflexibilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent modifies the geometric parameters of the second means by adding recesses to its structure. This parameter change (adding recesses) increases flexibility and reduces assembly friction, while the complexity increase is minimal and localized to specific areas of the support frame.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2815934B1Windscreen wiper blade
Publication Date: 2019.01.30 VALEO SYST DESSUYAGE SAS
  • EP2815934B1 patent drawingFigure 1~2
  • EP2815934B1 patent drawingFigure 3~4

AI summary

The invention relates to a support mount (10) for a windshield wiper blade, said mount (10) comprising a main longitudinal orientation body (X), said body comprising first means for receiving a bending vertebra (20) and second means for retaining a deflector (30) of said wiper blade, characterized in that said second means have recesses (50) facilitating the bending of said vertebra. The invention also relates to a windshield wiper blade comprising such a mount (10). The invention further relates to a wiping system comprising such a wiper blade.