Wiper Blade Spray and Connector Layout for Curved Windshields
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Solution Overview
Problem
Existing windshield wipers are ineffective in cleaning vehicle glazing surfaces with pronounced curvature or panoramic designs, such as those found in trucks and buses, due to inadequate distribution of pressure and washer fluid.
Innovation Solution
A windshield wiper design incorporating two connectors, a central mount, an air deflector, and an integrated spraying device with hydraulic manifolds to distribute pressure and washer fluid effectively across the glazed surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single spray nozzle in the hood region is used, then the device complexity is reduced, but the washer fluid distribution effectiveness on curved or panoramic surfaces deteriorates
Solution Approach 1:
The spray system is segmented into multiple spray nozzles distributed along the wiper blade structure, with each nozzle serving a specific zone. The distribution device includes multiple channels that deliver washer fluid to different spray nozzles positioned at strategic locations to cover curved and panoramic surfaces effectively
Solution Approach 2:
Different regions of the wiper blade are equipped with spray nozzles having different orientations and spray patterns tailored to local surface characteristics. The distribution device provides localized washer fluid delivery to match the curvature and geometry of specific glazed surface regions
2Manufacturing precision
If uniform pressure distribution is implemented across the wiper blade, then the cleaning effectiveness on curved surfaces is improved, but the device complexity increases due to additional connectors and mounting structures
Solution Approach 1:
The mounting structure is segmented into multiple connectors distributed along the wiper blade, with each connector providing localized pressure application points. This segmentation allows the blade to conform to curved surfaces while maintaining uniform pressure distribution through multiple contact points
Solution Approach 2:
The connectors and distribution channels are arranged in a three-dimensional configuration that follows the curvature of the glazed surface. This spatial arrangement enables uniform pressure distribution across complex surfaces by distributing force vectors in multiple directions
3Quantity of substance
If spray nozzles are integrated directly into the wiper blade, then the washer fluid coverage is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The spray nozzles are integrated with the distribution device channels and connector structures, combining multiple functions into unified components. This merging reduces the total number of separate parts while maintaining effective washer fluid delivery to all necessary zones
Data Source
AI summary
The invention relates to a windscreen wiper blade for a vehicle. The wiper blade at least one wiping strip configured to wipe a glazed surface of the vehicle, a stiffening member including a vertebra support and at least one vertebra configured to stiffen the wiping strip, a central mounting configured to be connected to a drive arm of the windscreen wiper blade, an air deflector connected to the vertebra support, two connectors rigidly connected to the at least one vertebra. The wiper blade also includes a spraying device configured to spray a washing fluid onto the glazed surface with spraying openings, and a washing-fluid distribution device configured to distribute washing fluid to the spraying device.