Wiper Blade Rubber Regeneration with Clamped Lip Cutting
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Solution Overview
Problem
Existing wiper blade regeneration methods fail to achieve satisfactory wiping performance, particularly in vehicles equipped with advanced driving assistance systems, as the regenerated blades exhibit irregular wiping due to deformation of the cut surface during tip-end cutting.
Innovation Solution
A blade-rubber regeneration device and method that utilizes a sandwiching member to fix the lip portion of the blade rubber, preventing elastic deformation during cutting, and a blade portion to accurately remove the worn tip-end, ensuring a parallel cut surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a regeneration cutter is used to cut off the blade rubber tip-end, then the blade rubber can be regenerated, but the wiping performance is not satisfactory due to irregular wiping
Solution Approach 1:
The sandwiching member is positioned to sandwich the lip portion before the blade portion enters, preventing elastic deformation in advance. This preliminary constraint ensures that when cutting occurs, the lip portion remains stable and produces a flat cut surface, thereby achieving both precise cutting and reliable wiping performance
Solution Approach 2:
The sandwiching member applies a counteracting force to the elastic deformation that would naturally occur when the blade portion enters the lip portion. By sandwiching the lip portion from both sides, it prevents the outward bulging deformation, thereby maintaining cutting precision and ensuring satisfactory wiping performance
2Productivity
If the blade portion enters the lip portion to cut off the tip end, then the worn part is removed, but elastic deformation occurs causing irregular wiping
Solution Approach 1:
The sandwiching member is pre-positioned to sandwich the lip portion before cutting begins. This preliminary constraint maintains the lip portion's shape stability during the entire cutting process, ensuring both efficient regeneration and a flat cut surface without irregular wiping
Solution Approach 2:
The sandwiching member applies localized constraint only to the specific region of the lip portion that would undergo elastic deformation during cutting. This targeted approach maintains cut surface flatness in the critical cutting zone while allowing the rest of the blade rubber to maintain its natural properties for effective wiping
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 device and method enable high-accuracy regeneration of blade rubber with wiping performance comparable to new blades, reducing irregular wiping and maintaining effective windshield cleaning.
Implementation Method 1
whose tip end has been cut off by a blade portion, has deformed in a convex shape toward the blade portion due to elasticity
Data Source
Figure 1A~1B
Figure 2A~3
Figure 4A~4B
AI summary
A blade-rubber regeneration device is provided, which is capable of regenerating a blade rubber, whose wiping performance lowered, with higher accuracy. This is a blade-rubber regeneration device including a blade portion for cutting off the tip end of a lip portion of the blade rubber in a longitudinal direction of the blade rubber, the regeneration device cutting off a part of the tip end of the lip portion by relatively moving the blade portion from an end part A, which is one of end parts in the longitudinal direction of the blade rubber toward an end part B, which is the other end part, and the regeneration device including a sandwiching member of sandwiching the lip portion.