Wiper Blade Rubber Regeneration for Accurate Lip Tip Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wiper blade regeneration methods result in irregular wiping due to deformation of the cut surface, leading to unsatisfactory wiping performance, especially with the advent of advanced driving assistance systems requiring higher precision.
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 cutting, ensuring accurate removal of the worn tip end, thereby maintaining or restoring the wiping performance to that of a new blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a simple cutter is used to cut off the blade rubber tip-end, then the device complexity is low and productivity is high, but the manufacturing precision of the cut surface is poor causing irregular wiping
Solution Approach 1:
The regeneration device is divided into independent functional modules: a cutting unit with blade, a sandwiching member to hold the lip portion, and a pressing member to apply pressure. This segmentation allows each component to perform its specific function optimally while keeping the overall device relatively simple and manageable.
Solution Approach 2:
The sandwiching member acts as an intermediary between the cutting blade and the lip portion, providing stable positioning and support during the cutting process. This intermediary component ensures the lip portion remains stationary and properly aligned, enabling precise cutting without requiring an overly complex device structure.
2Manufacturing precision
If the blade portion enters the lip portion without support, then the ease of operation is high, but the manufacturing precision deteriorates due to elastic deformation of the lip portion
Solution Approach 1:
The sandwiching member performs a preliminary action by clamping and stabilizing the lip portion before the cutting blade enters. This pre-positioning prevents elastic deformation during cutting, ensuring accurate cut surface formation without complicating the actual cutting operation.
Solution Approach 2:
The device replaces complex mechanical positioning systems with a simple sandwiching mechanism that uses friction and normal force to stabilize the lip portion. This substitution maintains ease of operation while achieving the necessary manufacturing precision through proper force application rather than complex mechanical constraints.
3Reliability
If the lip portion is not constrained during cutting, then the ease of manufacture is high, but the reliability of wiping performance decreases due to surface deformation
Solution Approach 1:
The sandwiching member applies constraint only at the specific location where the lip portion contacts it, providing localized support precisely where needed during cutting. This local quality approach ensures reliable cutting results without requiring comprehensive constraints throughout the entire lip portion, maintaining manufacturing simplicity.
Solution Approach 2:
The pressing member applies a preliminary counteracting force to prevent elastic deformation of the lip portion during cutting. By anticipating and counteracting the deformation tendency before it affects the cut surface quality, the device ensures reliable wiping performance without requiring overly complex manufacturing processes.
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 achieves high-accuracy regeneration of wiper blades with minimal surface deformation, ensuring consistent wiping performance comparable to new blades, while maintaining low costs and high productivity.
Implementation Method 1
a pressing member which presses the tip end of the lip portion toward the base part, the sandwiching member sandwiches at least a part of the lip portion from both side portions of the lip portion on a sectional view in a direction orthogonal to the longitudinal direction of the blade rubber
Data Source
AI summary
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.