Wiper Blade End Cap Integration for Simplified Rubber Replacement
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Solution Overview
Problem
Conventional wiper blades have complex assembly processes and low maintainability due to the number of parts, particularly the end cap and base part configuration, which complicates the attachment and detachment of the blade rubber.
Innovation Solution
A wiper blade design with a holder main body, vertebrae housed in the holder main body, an end cap with an insertion opening, and guiding parts that facilitate easy assembly and disassembly, eliminating the need for detaching the end cap during maintenance, and using resin retaining claws for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the end cap is composed of the cover part and the base part, then the blade rubber can be prevented from falling off, but the number of parts increases and assembling becomes complex
Solution Approach 1:
The patent merges the previously separate cover part and base part of the end cap into a single integrated end cap structure. This unified design maintains the blade rubber retention function while reducing the total number of parts and simplifying the assembly process, directly resolving the contradiction between reliability and device complexity
2Reliability
If the end cap is composed of multiple parts, then the blade rubber can be secured, but the assembling steps become complex and maintainability decreases
Solution Approach 1:
By integrating the cover part and base part into a single end cap component, the patent reduces the number of assembly steps required during manufacturing and maintenance. This simplification maintains secure blade rubber fixation while making the overall assembly process more efficient and easier to manufacture
3Ease of repair
If the cover part is opened to detach the blade rubber, then the blade rubber can be removed, but the maintenance process becomes complex and time-consuming
Solution Approach 1:
The patent extracts the blade rubber from the end cap structure through a dedicated insertion opening, allowing the blade rubber to be removed without opening or disassembling the end cap itself. This extraction approach significantly reduces maintenance time and simplifies the blade rubber replacement process
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
Simplifies the assembly process, improves maintainability by allowing the blade rubber to be easily attached and detached without opening the end cap, and ensures reliable retention of the blade rubber without falling off.
Implementation Method 1
a pair of vertebrae housed in the housing parts respectively and elastically deforming the blade rubber in accordance with a curvature factor of the windshield
Implementation Method 2
the guiding part has an inclined surface inclined from an outer part of the end cap toward the retaining part
Data Source
AI summary
Provided is a wiper blade wherein: a pair of accommodation sections are disposed in both sides in the short direction of a holder main body (31) so as to sandwich a holding section (31a) therebetween; a pair of vertebrae that elastically deform a blade rubber (20) to match the curvature of a front glass are accommodated in each accommodation section; an insertion opening (O) capable of inserting a main body section (21) is disposed between an end cap (60) and the holder main body (31); and a guiding section (61e) that guides the main body section (21) towards the holding section (31a) is disposed on the end cap (60) side where the insertion opening (O) is formed.