Wiper Blade Guide Channel Side Openings Stability
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Solution Overview
Problem
Existing wiper blade devices lack stability and cost-effectiveness due to inefficient design and material usage, particularly in the connection between the wiper strip unit and the wiper lip, and the distribution of forces acting on the wiper strip unit.
Innovation Solution
The wiper blade device incorporates a longitudinal guide channel with side openings and intermediate elements arranged in two longitudinal rows, which are designed as one piece with the wind deflector element, providing a stable and cost-effective connection, and features a carrier element with a protective coating and fastening recesses for secure assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the wiper strip unit uses a traditional closed design without side openings, then structural integrity is maintained, but material usage increases and manufacturing cost rises
Solution Approach 1:
The patent extracts material from the wiper strip unit by introducing side openings in the longitudinal guide channel, removing unnecessary material while preserving the essential structural function of guiding the carrier element
Solution Approach 2:
The wiper strip unit transitions from a solid closed structure to a porous design with side openings, allowing material reduction while maintaining functional integrity through strategic opening placement
2Ease of manufacture
If intermediate elements are designed as separate components, then assembly flexibility is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent merges the intermediate elements with the wind deflector element into a single integrated component, reducing the total number of parts and simplifying manufacturing while maintaining the stabilizing function
Solution Approach 2:
The wind deflector element is given multiple functions: it deflects wind acting on the wiper blade and simultaneously serves as the structural intermediate element connecting the wiper lip to the wiper strip unit
3Stability of the object's composition
If intermediate elements are arranged in a single row, then device simplicity is maintained, but force distribution and stability are insufficient
Solution Approach 1:
The patent uses asymmetric arrangement of intermediate elements in two staggered longitudinal rows, creating an offset pattern that optimizes force distribution across the wiper strip unit while maintaining structural balance
4Duration of action of stationary object
If the carrier element lacks a protective coating, then manufacturing simplicity is maintained, but wear resistance and service life are reduced
Solution Approach 1:
The patent applies a protective coating to the carrier element, creating a composite structure where the coating layer provides wear and corrosion resistance while the base material maintains its mechanical properties
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
This design enhances the stability and compactness of the wiper blade device, allows for even distribution of forces, and delays signs of wear, while enabling quick and secure assembly and mounting of the wiper blade adapter.
Implementation Method 1
a carrier element (16) which is spring-elastic and which, in particular, generates a counterforce which is dependent on a change in extension and is preferably proportional to the change and counteracts the change
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The invention relates to a wiper blade device comprising a wiper strip unit (10) which has a longitudinal guide channel (14) for accommodating a support element (16). According to the invention, the longitudinal guide channel (14) has at least one lateral opening (12).