Wiper Blade Rubber Regeneration With Deformation-Controlled Cutting
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Solution Overview
Problem
Existing wiper blade regeneration methods fail to achieve satisfactory wiping performance, leading to irregular wiping due to deformation of the cut surface during the regeneration process, which is exacerbated by the use of automated driving systems that require higher precision in windshield cleaning.
Innovation Solution
A blade-rubber regeneration device and method that utilizes a sandwiching member to stabilize the lip portion and a pressing member to prevent elastic deformation during the cutting process, ensuring accurate regeneration of the blade rubber by maintaining the cut surface parallel to the original surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple cutter is used to cut off the blade rubber tip-end, then the device complexity is reduced, but the manufacturing precision of the cut surface deteriorates causing irregular wiping
Solution Approach 1:
The cutting device is segmented into multiple functional components: a pressing member that applies force to the blade rubber before cutting, a cutting member that performs the cut, and a support structure. This segmentation allows each component to perform its specific function optimally, with the pressing member preventing deformation and the cutting member creating a precise cut surface.
Solution Approach 2:
The pressing member performs a preliminary action by pressing the blade rubber tip-end in the longitudinal direction before the cutting member makes contact. This preliminary pressing prevents elastic deformation of the blade rubber during the cutting process, ensuring that the cut surface remains flat and parallel to the original surface, thereby achieving high manufacturing precision.
2Ease of manufacture
If the blade portion enters the lip portion from the side to cut off the tip end, then the cutting process is simplified, but elastic deformation occurs causing the cut surface to tilt
Solution Approach 1:
The pressing member applies a preliminary counteracting force to the blade rubber tip-end in the longitudinal direction before the cutting member enters from the side. This preliminary anti-action counteracts the elastic deformation that would otherwise occur during side-entry cutting, preventing the cut surface from tilting and ensuring it remains parallel to the original surface.
Solution Approach 2:
By pressing the blade rubber tip-end before cutting, the pressing member prepares the material in advance to resist deformation during the side-entry cutting process. This preliminary action maintains the structural integrity and orientation of the blade rubber, allowing the cutting member to enter from the side without causing the cut surface to tilt.
3Device complexity
If no pressing member is used during cutting, then the device complexity is reduced, but the wiping performance deteriorates due to cut surface deformation
Solution Approach 1:
The pressing member performs a preliminary pressing action on the blade rubber tip-end in the longitudinal direction before and during the cutting process. This preliminary action prevents elastic deformation of the blade rubber, ensuring that the cut surface remains flat and parallel to the original surface, thereby maintaining high wiping performance comparable to new blades.
Solution Approach 2:
The pressing member applies controlled force to the blade rubber tip-end, creating a stabilizing pressure that prevents deformation during cutting. This controlled pressure ensures the cut surface remains flat and parallel, directly contributing to reliable wiping performance by eliminating irregularities that would cause uneven contact with the windshield.
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, achieving wiping performance comparable to new blades by preventing deformation and ensuring consistent contact with the windshield.
Implementation Method 1
a pressing member which presses the tip end of the lip portion toward the base part
Data Source
Figure 1A~1B
Figure 2A~3B
Figure 4~5A
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 and a pressing member for pressing the tip end of the lip portion, the sandwiching member sandwiching at least a part of the lip portion from both side portions of the lip portion under a specific condition, and the pressing member pressing the tip end of the lip portion prior to the movement.