Windscreen Wiper Direct Mounting Head Connection
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Solution Overview
Problem
Existing windscreen wiper devices for vehicles are complex and costly to manufacture, requiring multiple specialized parts and machinery, which increases production expenses and can lead to wear and reduced performance.
Innovation Solution
A simplified windscreen wiper device design that directly connects the wiper blade to the mounting head using a resilient tongue and connecting piece, eliminating the need for an intermediate oscillating arm, thereby reducing parts and improving wiping efficiency by mounting the blade closer to the windscreen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intermediate oscillating arm is used to connect the mounting head to the wiper blade, then the structural integrity and movement transmission are improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the intermediate oscillating arm from the wiper device structure, directly connecting the mounting head to the wiper blade. This extraction of the unnecessary intermediate component simplifies the overall structure while maintaining the essential functionality of transmitting oscillating motion to the wiper blade.
Solution Approach 2:
The patent merges the functions of the mounting head and the oscillating arm connection into a single direct connection. The resilient tongue mechanism integrates both the mounting function and the oscillating motion transmission function, eliminating the need for separate intermediate components.
2Reliability
If an intermediate oscillating arm is used, then the movement transmission is improved, but the weight and material usage increase
Solution Approach 1:
The oscillating arm is extracted and removed from the structure, eliminating its weight while preserving the oscillating motion transmission function through the direct resilient tongue connection between the mounting head and wiper blade.
3Reliability
If multiple specialized parts are used, then the functional performance is improved, but the manufacturing cost and machinery requirements increase
Solution Approach 1:
The patent extracts and eliminates the specialized oscillating arm component, reducing the number of parts that require specialized manufacturing processes, tools, and machinery, thereby lowering production costs.
Solution Approach 2:
The resilient tongue mechanism serves multiple functions: it provides the mounting connection, transmits oscillating motion, and allows for easy attachment and detachment of the wiper blade. This multi-functionality reduces the need for multiple specialized parts.
4Device complexity
If the wiper blade is connected further from the windscreen, then the mounting structure is simplified, but the wiping performance deteriorates
Solution Approach 1:
By removing the intermediate oscillating arm, the wiper blade can be mounted directly to the mounting head, positioning it closer to the windscreen and improving wiping performance while maintaining structural simplicity.
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 solution results in a cost-effective, lighter, and more efficient windscreen wiper with improved wiping performance, using fewer plastic materials and minimizing UV-light sensitivity, while avoiding complex machinery and tooling costs.
Implementation Method 1
said connecting device comprises at least one resilient tongue engaging in a correspondingly shaped hole provided in said mounting head, and wherein said resilient tongue is movable between a outward position retaining said wiper blade onto said mounting head
Data Source
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AI summary
A windscreen wiper device (1), particularly for automobiles, comprising an elastic, elongated carrier element, as well as an elongated wiper blade (2) of a flexible material, which can be placed in abutment with a windscreen to be wiped, which wiper blade (2) is of the flat blade type and includes at least one groove (3), in which groove a longitudinal strip (4) of the carrier element is disposed, wherein said windscreen wiper device (1) further comprises a mounting head (8) for transferring a reciprocal movement to said wiper blade (2), with the special feature that said windscreen wiper device (1) further comprises a connecting device (7) for detachably connecting said wiper blade (2) directly to said mounting head (8), wherein said connecting device (7) is positioned near one end of said wiper blade (2).