Windscreen Wiper Snap Connection Durability
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Solution Overview
Problem
The existing windscreen wiper devices have a weak connection between the longitudinal strips and the connecting pieces, leading to a short lifespan as the connection deteriorates over time, causing the wiper blade to lose reliability.
Innovation Solution
A snap connection mechanism using engaging members and protrusions on the connecting pieces that fit around the longitudinal strips, providing a durable and solid interconnection through a sliding mechanism, allowing for relative movement of the wiper blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple insertion connection is used between the oscillating arm pin and the connecting device through hole, then the device complexity is reduced and ease of operation is improved, but the reliability deteriorates as the connection becomes loose over time
Solution Approach 1:
The connection transitions from a static rigid fit to a dynamic snap-fit mechanism that allows controlled movement during assembly while maintaining secure engagement. The弹性 deformation of the connecting device wall enables the pin to be inserted and locked in place, providing both ease of assembly and reliable long-term connection.
2Ease of manufacture
If neighbouring ends of longitudinal strips are connected by connecting pieces, then the wiper blade structure is completed and can function, but the connection durability is insufficient causing the connecting pieces to come loose over time
Solution Approach 1:
The connecting piece incorporates elastic deformation zones that allow dynamic engagement with the longitudinal strips. This snap-fit mechanism provides a durable connection that maintains reliability over time while remaining simple to manufacture and assemble.
Solution Approach 2:
The connecting piece is divided into functional segments: engagement zones that interface with the longitudinal strips, elastic deformation zones that enable snap-fit connection, and connection zones that join to the wiper blade. This segmentation allows each part to perform its specific function optimally while maintaining overall connection durability.
Data Source
AI summary
A windscreen wiper device comprising an elastic, elongated carrier element, as well as an elongated wiper blade of a flexible material, which can be placed in abutment with a windscreen to be wiped, which wiper blade includes opposing longitudinal grooves on its longitudinal sides, in which grooves spaced-apart longitudinal strips of the carrier element are disposed, wherein neighboring ends of said longitudinal strips are interconnected by a respective connecting piece, which windscreen wiper device comprises a connecting device for an oscillating wiper arm, with the special feature that at least one connecting piece comprises engaging members engaging around the longitudinal strips so that said strips are mounted in grooves formed by said engaging members, wherein said strips and said connecting piece are slidably connected by means of a snap connection.