Windscreen Wiper Blade Longitudinal Cavity Assembly
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Solution Overview
Problem
Existing wiper blade assembly methods are complex and inefficient, requiring precise housing alignment for the elastic support element, which can be challenging and costly to manufacture and assemble.
Innovation Solution
A wiper blade design featuring a longitudinal body with an internal cavity for receiving the elastic support element, allowing for independent pre-assembly of modules and simplified assembly by longitudinal sliding, reducing the need for precise housing alignment and enabling cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the support element is mounted in a housing of the holding member, then the assembly requires precise housing alignment, but this increases manufacturing complexity and assembly difficulty
Solution Approach 1:
The invention divides the wiper blade into two independent modules: a holding member module and a longitudinal body module. The support element is mounted in the longitudinal body module's cavity rather than in the holding member's housing, allowing each module to be manufactured and assembled separately with standard tolerances, then combined through simple sliding connection.
Solution Approach 2:
The support element mounting function is extracted from the holding member and transferred to the longitudinal body. This separation removes the requirement for precise alignment between the support element and the holding member housing, as the support element is now received by the cavity in the longitudinal body which then connects to the holding member.
2Ease of manufacture
If the support element is mounted directly in a cavity of the longitudinal body, then independent pre-assembly of modules is enabled, but this requires a new assembly method
Solution Approach 1:
The support element is pre-mounted in the cavity of the longitudinal body to form a complete longitudinal body module before final assembly. This preliminary action allows the longitudinal body module to be manufactured, assembled, and tested independently, improving ease of manufacture and quality control.
3Manufacturing precision
If precise housing alignment is required for the support element, then mounting accuracy is improved, but this increases manufacturing and assembly costs
Solution Approach 1:
By segmenting the mounting function from the holding member to the longitudinal body, the system allows each component to be manufactured with standard tolerances. The support element's accuracy is ensured by its fit in the longitudinal body's cavity, not by alignment with the holding member, reducing manufacturing and assembly costs.
Data Source
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Figure 3~4
AI summary
The invention relates to a windshield wiper blade (110) for a vehicle window wiping system, in particular for automobiles, comprising: - a wiping blade (116), - an elongated elastic support element in the form of a strip (118), - a longitudinal retaining member (130) for said blade (116) which includes a housing (132), referred to as the first housing, for receiving a heel (134) of said blade (116), and - a longitudinal body (114) which includes an aerodynamic deflector (120) and means for attaching it to the retaining member, where said longitudinal body includes a cavity (146) for receiving said support element (118).