Single-Piece Wiper Arm Structure for Strength Without Added Weight

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Solution Overview

Problem

Existing vehicle wiping system arms are heavy, poorly optimized in manufacturing, and lack robustness and aerodynamic performance, making them inefficient and prone to mechanical stress.

Innovation Solution

A single-piece arm design with a main beam and additional beams, manufactured using lightweight materials like plastic or metal via three-dimensional printing, which enhances mechanical strength and aerodynamics while simplifying manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a metal casing with plastic cover is used, then mechanical strength is improved, but weight increases and manufacturing complexity increases

Engineering Contradiction:

Improvemechanical strengthVSAvoidweight

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The patent employs composite materials by integrating multiple functional elements (main beam, additional beams, aerodynamic cover, fluid conduit) into a single hybrid structure that combines the strength characteristics of metal with the aerodynamic and lightweight properties of plastic, resolving the contradiction between mechanical strength and weight

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention merges previously separate components (metal casing, plastic cover, fluid conduit) into a single integrated arm structure, eliminating the need for assembly while achieving both high strength and reduced weight through optimized material distribution

Inventive Principle:

Principle #5Merging (Combining)

2Strength

If a metal casing with multiple components is used, then mechanical strength is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvemechanical strengthVSAvoidmanufacturing complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The patent combines multiple previously separate manufacturing steps and components into a single integrated structure that can be produced in one piece, eliminating assembly operations and reducing manufacturing complexity while maintaining mechanical strength through optimized structural design

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated arm structure performs multiple functions simultaneously (structural support, aerodynamic flow management, fluid conveyance) within a single component, reducing the number of parts and assembly steps required

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If a plastic cover is added, then aerodynamic performance is improved, but device complexity increases

Engineering Contradiction:

Improveaerodynamic performanceVSAvoiddevice complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent integrates the aerodynamic cover with the structural beams and fluid conduit into a single unified component, achieving improved aerodynamic performance without increasing device complexity since all elements are formed as one piece

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250001976A1Single-piece arm of a wiping system comprising a plurality of longitudinal beams

Publication Date: 2025.01.02 VALEO SYST DESSUYAGE SAS

AI summary

An arm of a wiping system is disclosed. The arm includes a part extending longitudinally. The part is configured to be connected by a first end to an arm drive device and by a second end to an attachment device for attaching the arm to a wiper blade. The part includes a main beam extending in the longitudinal direction. The part is in a single piece and the part also includes at least one additional beam extending in the longitudinal direction.