Fin Ray Wiper Clamping Device for Drive Shaft Adaptation
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Solution Overview
Problem
Windshield wiper devices struggle to maintain reliable contact and prevent smearing on windshields with pronounced curvature and temperature fluctuations, and they often require complex adjustments for various weather conditions and user-friendliness.
Innovation Solution
A windshield wiper device with a bendable upper and lower part connected by spaced-out elements and a clamping mechanism that adapts to the drive shaft, allowing for secure mounting without tilting and providing a force-fitting connection for effective wiping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wiper blade is pressed harder on the windshield to improve contact, then wiping reliability improves, but the risk of smearing increases due to excessive pressure
Solution Approach 1:
The wiper blade incorporates a dynamic pressure regulation mechanism that automatically adjusts the contact pressure between the wiper edge and windshield. This allows the system to maintain optimal wiping pressure without manual intervention, preventing both loss of contact and excessive pressure-induced smearing.
Solution Approach 2:
The invention changes the pressure parameter dynamically during operation. By incorporating springs or elastomeric elements, the system automatically modulates the contact force based on operational conditions, transforming a static pressure application into a dynamic, self-regulating process.
2Reliability
If the wiper blade structure is made more complex to optimize wiping for various conditions, then wiping performance improves, but handling and user-friendliness deteriorate
Solution Approach 1:
The wiper blade is divided into modular segments that can be independently adjusted or replaced. This segmentation allows complex wiping optimization features to be distributed across separate components, making the overall system more manageable and easier to service while maintaining high performance.
Solution Approach 2:
The wiper blade incorporates self-adjusting mechanisms that automatically optimize wiping parameters without requiring user intervention. Features such as automatic pressure regulation and adaptive angle adjustment operate autonomously, maintaining complex performance capabilities while preserving simple user interaction.
3Reliability
If the wiper blade is designed to adapt to different windshield curvatures, then contact reliability improves, but the structural complexity increases
Solution Approach 1:
The wiper blade employs flexible, bendable elements that can conform to various windshield curvatures. These flexible components naturally adapt to the surface geometry through their inherent elasticity, eliminating the need for complex mechanical adjustment mechanisms while maintaining reliable contact across different curvature profiles.
Solution Approach 2:
The blade structure incorporates dynamic flexibility that allows it to adapt its shape in real-time during operation. This dynamic behavior enables the wiper to automatically conform to different windshield geometries without requiring pre-adjustment or complex rigid-linkage mechanisms.
4Adaptability or versatility
If the fastening part is designed to accommodate different drive shaft sizes, then adaptability improves, but the mounting precision and alignment deteriorate
Solution Approach 1:
The fastening part incorporates adjustable geometric parameters, such as variable aperture sizes or reconfigurable clamping surfaces, that can be adapted to different drive shaft dimensions. This parametric flexibility allows the same fastening component to maintain precise alignment across a range of shaft sizes through simple dimensional adjustment rather than requiring different components.
Data Source
AI summary
The invention relates to a windshield wiper device for a vehicle, in particular a motor vehicle, having a fastening element fastened to a drive shaft. The windshield wiper device comprises a wiper blade having an elongate upper part, which is at least partially flexible, an elongated lower part, which is at least partially flexible, and a plurality of connecting elements for connecting the upper part and the lower part. Along a longitudinal extension of the wiper blade, the connecting elements are spaced apart from one another, wherein the connecting elements are designed to allow a movement of the upper part and the lower part relative to one another, by means of a movement component, along a longitudinal extension of the wiper blade. The windshield wiper device further comprises a fastening part on the wiper blade side, wherein the fastening part on the wiper blade side comprises a clamping device such that the fastening part on the wiper blade side can be adjusted to the dimension of at least part of the drive shaft.