Motor Vehicle Camera Housing Assembly for EMI Shielding
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Solution Overview
Problem
Existing motor vehicle camera device housings fail to provide effective shielding against electromagnetic waves due to gaps at connection surfaces, allowing penetration and causing malfunctions in electrical components.
Innovation Solution
The housing design features cutting elements on the circumferential connection surfaces of metal housing parts that protrude and interlock, ensuring metal-to-metal contact over the circumference, thereby closing the Faraday cage and preventing electromagnetic wave penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the housing is assembled from multiple housing parts, then the housing can be manufactured more easily and assembled more flexibly, but gaps appear at the connection surfaces that allow electromagnetic waves to penetrate
Solution Approach 1:
Cutting elements are pre-formed on the housing parts before assembly. These cutting elements are designed to protrude from the connection surfaces and automatically cut into the opposing housing part during the assembly process, creating metal-to-metal contact points that close the Faraday cage before the housing is fully assembled
Solution Approach 2:
The cutting elements act as intermediary structures between the two housing parts. They protrude from one housing part's connection surface and embed into the other housing part, creating conductive contact points that bridge the gap between housing parts and prevent electromagnetic wave penetration
2Object-affected harmful factors
If cutting elements are added to the housing parts, then electromagnetic wave shielding is improved, but the device complexity increases
Solution Approach 1:
The continuous connection surface is segmented into multiple discrete cutting elements distributed around the circumference. This segmentation allows the shielding function to be achieved through multiple distributed contact points rather than requiring a continuous complex structure, simplifying the overall design while maintaining effectiveness
Solution Approach 2:
The cutting elements are strategically positioned at specific locations around the connection surface where they are most needed for electromagnetic shielding. The local quality of the connection surface is enhanced at these discrete points rather than requiring uniform complexity across the entire surface
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
This design creates a reliable Faraday cage that effectively shields both internal and external electrical components from electromagnetic interference, ensuring the integrity of the camera system and other vehicle electronics.
Implementation Method 1
The cutting elements of the invention generate metal to metal contact points distributed over the circumference of the circumferential connection surface, and thus close the Faraday cage built by the housing parts, bridging the gap between the first and the second housing part so that no electromagnetic waves can penetrate into or out from the housing.
Data Source
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AI summary
A housing (10) for enclosing at least one electronic component of a motor vehicle comprises at least a first metal housing part (20) with a first circumferential connection surface (21) and a second metal housing part (30) with a second circumferential connection surface (31). The metal housing parts (20, 30) are designed to be connected to each other along a connection direction such that said circumferential connection surfaces (21, 31) lie face to face to each other in the connected state. At least one of the housing parts (20) comprises a plurality of cutting elements (22) protruding from the corresponding circumferential connection surface (21). At least a part of the cutting elements (22) have an oversize with respect to the other circumferential connection surface (31), such that the cutting elements (22) cut into the other circumferential connection surface (31) during connection of the housing parts (20, 30). The cutting elements (22) are distributed over the circumference of said circumferential connection surfaces (21, 31).