Vehicle Camera Housing Grounding via Elastic Spring Elements
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Solution Overview
Problem
Existing cameras for motor vehicles face challenges in achieving reliable electromagnetic compatibility due to undesired electromagnetic radiation interference, which current shielding methods fail to adequately address.
Innovation Solution
A camera design featuring a housing with a connecting device using spring elements to securely connect the outer conductor to the housing, ensuring electromagnetic shielding by grounding the housing and compensating for manufacturing inaccuracies and temperature variations, utilizing a coaxial plug with an inner and outer conductor for effective electromagnetic interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is rigidly connected to the outer conductor, then the electrical connection is stable, but manufacturing inaccuracies and temperature variations cause connection failures
Solution Approach 1:
The connecting device changes its physical state from rigid to elastic, allowing it to deform and adapt to manufacturing tolerances and temperature variations while maintaining reliable electrical connection between the housing and outer conductor
Solution Approach 2:
The connecting device is designed as an elastic component that can dynamically adjust its position and deformation to compensate for misalignment between the coaxial plug and housing opening, ensuring continuous electrical contact despite manufacturing inaccuracies
2Reliability
If shielding measures are strengthened, then electromagnetic compatibility improves, but device complexity increases
Solution Approach 1:
The connecting device combines multiple functions into a single component: it provides mechanical connection, ensures electrical contact between housing and outer conductor, and compensates for manufacturing tolerances, thereby achieving effective shielding without increasing overall device complexity
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 solution provides enhanced electromagnetic compatibility by ensuring a reliable electrical connection between the housing and outer conductor, effectively shielding electromagnetic radiation and adapting to manufacturing and temperature-related deviations, thereby reducing interference.
Implementation Method 1
the connecting device comprises a plurality of spring elements, which exert a spring force on the housing and/or outer conductor in the assembled state of the camera
Implementation Method 2
a housing configured to shield electromagnetic radiation at least in certain areas
Data Source
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AI summary
The invention relates to a camera (2) for a motor vehicle (1) including a housing (5) configured to shield electromagnetic radiation at least in certain areas, including a circuit board (16) disposed in the housing (5), and including an interface device (11) for connecting the camera (2) to the motor vehicle (1), wherein the interface device (11) is electrically connected to the circuit board (16), wherein the interface device (11) includes a coaxial plug (12) with an inner conductor (13) and an outer conductor (14) and the camera (2) has a connecting device (17) for electrically connecting the outer conductor (14) to the housing (5).