Windshield Wiper Even Pressing Force via Segmented Auxiliary Frames
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Solution Overview
Problem
Existing windshield wipers often fail to maintain an even pressing force on the windshield, leading to incomplete removal of rain, fog, or sludge, which compromises driver visibility and safety.
Innovation Solution
A windshield wiper design featuring a primary wiper frame connected to a driving arm, with auxiliary wiper frames and connecting frames that distribute an elastic pressing force evenly across the wiper blade, ensuring compact contact with the windshield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional windshield wiper structure is used, then the structure is simple, but the pressing force is uneven and insufficient, resulting in poor wiping effect
Solution Approach 1:
The wiper frame is divided into a primary wiper frame and multiple auxiliary wiper frames (second and third auxiliary wiper frames). Each auxiliary frame is independently connected to the primary frame through pivotal connections, allowing them to function as separate pressing units. This segmentation enables even distribution of pressing force across different sections of the wiper blade, directly improving the wiping effect while maintaining reasonable structural complexity through modular design.
2Reliability
If the pressing force is increased to improve wiping, then the wiping effect is enhanced, but the pressing force becomes uneven and causes incomplete contact
Solution Approach 1:
Different auxiliary wiper frames are positioned at specific locations along the primary wiper frame to address local pressing force deficiencies. The second auxiliary wiper frame is connected at one location while the third auxiliary wiper frame is connected at another location, creating locally optimized pressing force distribution. This ensures that each section of the wiper blade receives appropriate pressing force, achieving even contact across the entire windshield surface.
3Reliability
If auxiliary wiper frames are added to distribute pressing force, then the pressing force becomes even and compact contact is achieved, but the device complexity increases
Solution Approach 1:
Multiple auxiliary wiper frames are merged with the primary wiper frame through pivotal connections, forming an integrated wiper assembly. The auxiliary frames share common mounting points and coordination mechanisms with the primary frame, allowing them to function as a unified system rather than separate components. This merging approach distributes pressing force evenly while minimizing the increase in overall device complexity through coordinated design.
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 design ensures an even and enhanced pressing force, resulting in improved wiping efficiency and effectiveness in clearing rain, fog, or sludge from the windshield, enhancing driver safety.
Implementation Method 1
Each of the auxiliary wiper frames comprises an elastic piece and a pivotal base fixed to the elastic piece
Data Source
AI summary
A windshield wiper (1,1a) with an even pressing force is connected to a driving arm (2) and includes a primary wiper frame (10,10a), two auxiliary wiper frames (20,20a), connecting frames (30,30a), and a wiper blade (40,40a). The primary wiper frame (10,10a) includes a fixing base (11,11a) connected to the driving arm (2). The auxiliary wiper frames (20,20a) are disposed on both ends of the primary wiper frame (10,10a). Each auxiliary wiper frame (20,20a) includes an elastic piece (21,21a) and a pivotal base (22,22a) fixed to the elastic piece (21,21a) and pivotally connected to the primary wiper frame (10,10a). The connecting frames (30,30a) are evenly provided on each auxiliary wiper frame (20). Each connecting frame (30) includes a pressing piece (31,31a) and buckling brackets (32,32a). The wiper blade (40,40a) is disposed through the buckling brackets (32,32a) to be connected below the pressing piece (31,31a).