Windshield Wiper Blade Clamping Structure Against Disengagement
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Solution Overview
Problem
Existing windshield wiper assembly structures suffer from a lack of firmness, leading to disengagement or displacement of the wiper blade, which affects cleaning effectiveness and service life.
Innovation Solution
A windshield wiper assembly structure featuring a wiper holder with outer buckling brackets, a wiper blade with a penetrating portion and scraping portion, elastic sheets inserted into slots on the wiper blade, and clamping seats with clipping plates that engage with the elastic sheets and outer buckling brackets to securely fasten the wiper blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the rubber blade is clamped and fixed by metal elastic sheets and wiper frame, then the assembly structure is simple, but the rubber blade is easily disengaged or pulled out from the side
Solution Approach 1:
The wiper blade is divided into multiple segments including a central column, scraping portion, and penetrating portion. The clamping mechanism is segmented into outer buckling brackets, elastic sheets, and clamping seats with clipping plates. This segmentation allows each component to perform its specific function while working together to prevent disengagement.
Solution Approach 2:
The patent employs a nested structure where the penetrating portion of the wiper blade is inserted into the through groove of the outer buckling bracket, the elastic sheets are inserted into slots on the wiper blade, and the clamping seats with clipping plates are positioned to engage with both the wiper blade and outer buckling brackets. This nested arrangement creates multiple levels of fixation.
Solution Approach 3:
The clamping mechanism combines multiple materials including metal outer buckling brackets, elastic sheets (likely rubber or polymer), and plastic or metal clamping seats. This composite material approach provides both structural strength and elastic compliance to maintain firm fixation while accommodating dimensional variations.
2Duration of action of moving object
If the wiper blade is used for a period of time, then the wiper blade performs cleaning function, but the wiper blade may be deteriorated, deformed, or displaced
Solution Approach 1:
The patent incorporates preliminary positioning features during assembly, including the penetrating portion pre-aligned with the through groove, elastic sheets pre-positioned in slots, and clamping seats pre-configured to engage with the wiper blade and outer buckling brackets. This preliminary action ensures correct positioning from the start, preventing deterioration and displacement during use.
Solution Approach 2:
The elastic sheets provide self-adjusting elastic force that automatically compensates for wear and dimensional changes in the wiper blade during service. The clipping plates with protruding thorns and blocking portions create a self-locking mechanism that maintains position without additional adjustment, allowing the assembly to self-correct minor displacements.
3Reliability
If the rubber blade is firmly fixed with multiple components, then the fixation reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple fixation functions into an integrated clamping mechanism where the outer buckling bracket, elastic sheets, and clamping seats with clipping plates work together as a unified system. The clipping plates simultaneously engage with the wiper blade central column and the outer buckling bracket, combining positioning and securing functions in a single structural arrangement.
Solution Approach 2:
The clamping seats serve multiple functions: they provide structural support, guide the positioning of the wiper blade through the clipping plates, engage with the outer buckling brackets for secure attachment, and accommodate the elastic sheets for flexible compensation. This multi-functionality reduces the need for separate components for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The described structure prevents disengagement or displacement of the wiper blade, ensuring a firm and solid assembly that maintains cleaning effectiveness over a longer service life.
Implementation Method 1
The clipping plate has elastic restoring force. The hook is elastically pressed by the outer buckling bracket, and the clipping plate is positioned on the notch through elastic restoring force when the hook passes through the outer buckling brackets.
Data Source
AI summary
A windshield wiper assembly structure includes a wiper holder, a wiper blade, elastic sheets, and clamping seats. The wiper holder includes two outer buckling brackets. Each outer buckling bracket includes a through groove and an opening. The wiper blade includes a penetrating portion and a scraping portion. The penetrating portion is inserted in the through grooves. The penetrating portion includes a central column and a first slot. The elastic sheets are respectively inserted to first slots. Each elastic sheet is attached to the central column and abuts against the outer buckling brackets. The clamping seats are fixed on ends of the wiper blade. Each clamping seat includes a pair of clipping plates and clamped by the outer buckling brackets. Each clipping plate includes a protruding thorn and inserted to the first slot to abut against the elastic sheets. The protruding thorn passes through the central column.