Polymeric Frame Electronic Unit for Vehicle Assembly
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Solution Overview
Problem
Current electronic units for vehicles face issues with metal swarf damage during assembly and fail to simplify the product and production process, which are increasingly stringent requirements for automobile manufacturers.
Innovation Solution
An electronic unit with a polymeric frame that serves as the casing and internal skeleton, featuring screw-fastened metal sheets for outer walls, and a ventilation system, where screws penetrate into the plastic frame to prevent metal swarf damage and simplify assembly and production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal frame is used for the electronic unit casing, then structural strength is improved, but metal swarf is generated during assembly that can damage electronic components
Solution Approach 1:
The patent changes the material parameter of the frame from metal to polymer, fundamentally altering the properties of swarf generated during assembly. Plastic swarf is non-conductive and does not cause short circuits or damage to electronic components, while still providing sufficient structural strength for the application.
Solution Approach 2:
The patent employs a composite structure combining polymer frame material with metal sheets for specific structural reinforcement where needed. This allows the primary frame to be made of polymer (avoiding swarf issues) while maintaining overall structural integrity through strategic metal reinforcement.
2Stability of the object's composition
If traditional metal frame construction is used, then structural integrity is maintained, but assembly and production process complexity increases
Solution Approach 1:
The patent merges the frame structure with integrated positioning features and mounting points directly into the polymer body. The frame incorporates recesses, ribs, and attachment points that combine multiple functions (structural support, component positioning, fastening) into a single integrated part, reducing the number of separate components and assembly steps.
Solution Approach 2:
The patent segments the electronic unit into modular components (frame, metal sheets, electronic boards, cooling system) that can be independently manufactured and then assembled. The polymer frame is designed as a separate molded part that interfaces with other modules through standardized connection points, simplifying both manufacturing and assembly.
3Strength
If screws are used to fasten components to the frame, then secure attachment is achieved, but metal swarf generation increases
Solution Approach 1:
The patent changes the material parameter of the frame from metal to polymer, so that when screws are driven into the frame, plastic swarf is generated instead of metal swarf. Plastic swarf is electrically non-conductive and does not pose the same risks to electronic components, while still allowing secure mechanical attachment.
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 polymeric frame simplifies the assembly and production process, prevents damage from plastic swarf, and results in a structurally simpler and lighter electronic unit with precise part positioning, suitable for automation, reducing production costs and ensuring high-quality assembly.
Implementation Method 1
a ventilation device provided in the unit itself, which is designed for forcing a flow of air through the unit
Data Source
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AI summary
Described herein is an electronic unit for vehicles, of the type comprising a casing containing a processor module and one or more modules for exchange of data with external systems. The unit described is characterized in that said casing comprises a frame (200) made of polymeric material, to which said processor module and said data-exchange modules are constrained, and at least one outer metal sheet (242, 244) designed to define one or more outer walls of said casing, which is fixed to said frame (200) made of polymeric material.