Wiper Washer Projection Device Attachment Mechanism

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Solution Overview

Problem

Existing windshield wiper systems with integrated windshield washer fluid projection mechanisms are complex and expensive due to the need for articulated connections between the wiper arm and the wiper blade, leading to a risk of the projection device becoming detached during operation.

Innovation Solution

A device for projecting windshield washer fluid that is fixed between the wiper blade and the wiper arm, utilizing engagement means that provide mechanical strength and a secure hold, allowing for reversible mounting and simplifying the assembly and disassembly process, with the option of forming a single piece with the spraying means for reduced complexity and cost.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the projection device is fixed directly to the wiper blade, then the device can be attached to the blade, but the fixing is not effective and the device may detach during operation

Engineering Contradiction:

Improvefixing reliabilityVSAvoidfixing mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The projection device is nested within the connection system between the wiper arm and blade. The fixing means are positioned inside the connection area, utilizing the space between the arm and blade to secure the device, preventing detachment while maintaining a compact structure.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The fixing means act as an intermediary element between the projection device and the wiper blade. These fixing means engage with both the device and the blade connection system, providing a reliable mechanical connection that prevents detachment during operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If complex articulated connection means are used between the arm and the blade, then the projection device can be securely attached, but the production cost increases

Engineering Contradiction:

Improveattachment securityVSAvoidproduction cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The fixing means serve multiple functions: they secure the projection device to the blade, maintains proper positioning during wiper operation, and integrate with the existing connection system. This multi-functionality eliminates the need for separate complex articulated connection mechanisms, reducing production costs while maintaining attachment security.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If the fixing means are simple, then the production cost is reduced, but the device may detach during operation

Engineering Contradiction:

Improveproduction costVSAvoidattachment security

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The fixing means utilize the third dimension by positioning themselves within the connection space between the arm and blade. This spatial arrangement allows simple fixing elements to achieve secure attachment by leveraging the existing structural geometry of the connection system, maintaining reliability without increasing complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3012163B1Device for spraying windscreen washer liquid for a wiper of a vehicle windscreen wiping system

Publication Date: 2020.04.01 VALEO SYST DESSUYAGE SAS

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AI summary

The invention relates to a windshield washer fluid projection device (50) for a wiper blade (1') of a vehicle wiper system, comprising windshield washer fluid projection means (52) and means (53) for attaching said wiper blade (1'), characterized in that the attachment means (53) are configured to be engaged between means (11') for connecting the wiper blade to a wiper arm and said wiper arm.