Boneless Wiper Joint Base for Uniform Force and Easy Assembly
Solution Overview
Problem
Existing wiper structures with metal frames face challenges in achieving uniform force distribution and require multiple assembly components, complicating assembly and limiting applicability to various wiper arms.
Innovation Solution
A boneless wiper structure design featuring a wiper blade with positioning holes and a connection base assembly that includes a fixing base and joint base, omitting traditional positioning elements, allowing for reduced assembly components and adaptability to different wiper arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional positioning elements are used to secure the wiper blade, then the assembly is more reliable, but the device complexity increases and assembly becomes more complicated
Solution Approach 1:
The patent removes traditional positioning elements (screws, clips, or other fastening components) from the wiper assembly. Instead, it uses the elastic fastening arm that leverages the natural elasticity of the joint base material to achieve positioning and securing functions, thereby reducing device complexity while maintaining reliability
Solution Approach 2:
The joint base is designed with elastic properties where the fastening arm automatically returns to its original position after being deformed during assembly. This self-service mechanism eliminates the need for additional positioning elements, as the elastic material itself provides the securing function through its inherent mechanical properties
2Strength
If multiple assembly components are used to secure the wiper blade, then the structural integrity is improved, but the ease of manufacture decreases and assembly time increases
Solution Approach 1:
The patent combines multiple functions (positioning, securing, and structural support) into a single integrated joint base component. The elastic fastening arm within the joint base simultaneously provides structural support and securing functions, eliminating the need for separate positioning elements and reducing assembly steps
Solution Approach 2:
The patent utilizes the elastic modulus and mechanical properties of the joint base material as a key parameter. By designing the fastening arm with specific elastic characteristics, the system achieves both structural integrity and ease of assembly through controlled deformation and recovery, transforming material parameter selection into a design solution
3Adaptability or versatility
If the wiper structure is designed for wide applicability to various wiper arms, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The joint base is designed as a universal component that can accommodate different types of wiper arms through its elastic fastening mechanism. The recessed groove and pivot hole configuration allows the same joint base to work with various wiper arm designs, providing multi-functionality without requiring multiple specialized components for different applications
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 uniform force distribution and simplifies assembly by reducing components, enabling secure attachment to various wiper arms while maintaining structural integrity and ease of installation.
Implementation Method 1
an elastic fastening arm extends from another end of the joint base and is engaged with the second engagement groove
Data Source
AI summary
A boneless wiper structure (10) for a wiper arm (3) includes a wiper blade (1) and a connection base assembly (2). The wiper blade (1) is provided with two positioning holes. The connection base assembly (2) includes a fixing base (21) and a joint base (22). The fixing base (21) is assembled to the wiper blade (1). Two positioning feet (211) extend from a bottom of the fixing base (21) for engagement with the two positioning holes (11). A top of the fixing base (21) includes a containing groove (212) and a first engagement groove (213) and a second engagement groove (214) arranged on a front side and a rear side of the containing groove (212). The joint base (22) is engaged with the containing groove (212). A block (221) extends from one end of the joint base (22) to engage with the first engagement groove (213).