Streamlined Windscreen Wiper Articulation Against Lateral Forces
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Solution Overview
Problem
Existing streamlined windscreen wipers face disarticulation due to lateral and torsional forces during operation, leading to potential failure, as the articulations between fairing elements are not robust enough to handle these forces effectively.
Innovation Solution
A reinforced articulation design featuring an adapter element fixed to the central mounting and end cap, with calipers pivotably articulated to the adapter element, creating a rigid interlocking interface resistant to lateral forces, and incorporating a reinforcing portion and pivot pin for enhanced mechanical coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the fairing is made as a structural element to bear lateral and torsional forces, then the wiper blade can maintain its streamlined shape and aesthetic appearance, but the articulations between fairing elements may disarticulate due to insufficient robustness
Solution Approach 1:
The fairing is divided into multiple individual pieces (first fairing element, second fairing element, end cap) that can be articulated to each other, allowing the streamlined shape to be maintained while distributing mechanical stresses across multiple connection points rather than relying on a single rigid structure
Solution Approach 2:
An adapter element is introduced as an intermediary component between the end cap and the fairing elements. This adapter serves as a mediator that reinforces the articulation connections, providing additional structural support to handle lateral and torsional forces without compromising the streamlined aesthetic appearance of the fairing
2Device complexity
If calipers are articulated directly to fairing elements, then the structure is simplified, but the articulations are not robust enough to handle lateral forces during operation
Solution Approach 1:
The adapter element acts as an intermediary between the caliper and the fairing elements, providing a reinforced connection point. This intermediary structure strengthens the articulation to handle lateral forces during wiping operations while maintaining relative structural simplicity
Solution Approach 2:
The adapter element combines multiple structural features (mounting portion, articulation portion, reinforcing element) into a single composite component that integrates both the mounting function and the reinforcement function, achieving high articulation strength without proportionally increasing overall device complexity
3Strength
If the fairing is made rigid to resist lateral forces, then articulation disarticulation is reduced, but the wiper blade cannot flex to follow the curvature of the windscreen
Solution Approach 1:
The fairing is segmented into multiple articulated pieces rather than being a single rigid structure. This segmentation allows each segment to be relatively rigid for lateral force resistance while the articulations between segments provide the necessary flexibility to follow the windscreen curvature
Solution Approach 2:
The fairing transitions from a static rigid structure to a dynamic articulated structure. The articulations allow the fairing to adapt its configuration in real-time as the wiper blade moves across the curved windscreen surface, maintaining both structural integrity and adaptability
Data Source
AI summary
The streamlined flat windscreen wiper comprises a longitudinal wiper blade, a longitudinal streamlined fairing comprising a central mounting and at least one end cap, and at least one caliper comprising claws for retaining said longitudinal wiper blade, and further comprises at least one adapter element fixed to the central mounting at a distal end thereof, a proximal end of the at least one end cap and said at least one caliper being pivotably articulated to said at least one adapter element.