Vehicle Camera Housing Electromagnetic Shielding Connection
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Solution Overview
Problem
Existing vehicle cameras face challenges in achieving reliable electromagnetic compatibility due to undesired electromagnetic radiation from components like imaging chips and power supplies, which interferes with other technical appliances.
Innovation Solution
A camera design with a housing configured to shield electromagnetic radiation, featuring a coaxial plug with an inner and outer conductor, where the outer conductor is electrically connected to the housing via a connecting device that compensates for manufacturing inaccuracies and retains the circuit board at an axial position, ensuring effective grounding and electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is used to shield electromagnetic radiation, then electromagnetic compatibility is improved, but manufacturing inaccuracies cause poor electrical connection between the housing and outer conductor
Solution Approach 1:
The connecting device changes the mechanical parameter of electrical connection from rigid to flexible through elastic deformation, allowing the connection to adapt to manufacturing tolerances while maintaining electromagnetic shielding effectiveness
Solution Approach 2:
The connecting device acts as an intermediary element between the housing and outer conductor, compensating for manufacturing inaccuracies through its elastic properties and ensuring reliable electrical connection for ground potential
2Ease of operation
If the coaxial plug is detachably connected to provide low electromagnetic interference, then ease of operation is improved, but manufacturing inaccuracies cause misalignment and poor shielding
Solution Approach 1:
The connecting device transforms the rigid alignment requirement into a flexible elastic connection, allowing the coaxial plug to be detachably connected while automatically compensating for misalignment through elastic deformation
Solution Approach 2:
The connecting device introduces dynamic elastic deformation capability to the connection system, allowing it to adapt to manufacturing inaccuracies and maintain proper concentric alignment during detachable connection and operation
3Reliability
If the housing is electrically connected to ground potential for effective shielding, then electromagnetic compatibility is improved, but manufacturing inaccuracies cause unreliable grounding
Solution Approach 1:
The connecting device changes the grounding connection from rigid to elastic, ensuring reliable electrical connection between the housing and ground potential despite manufacturing variations in housing dimensions and outer conductor positioning
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 enhances electromagnetic compatibility by effectively connecting the housing to the ground potential, reducing electromagnetic interference and ensuring reliable electrical connections despite manufacturing inaccuracies, thus providing robust shielding against electromagnetic radiation.
Implementation Method 1
a housing (5) configured to shield electromagnetic radiation at least in certain areas
Implementation Method 2
the connecting device (17) is formed elastically deformable. By the elastic deformability of the connecting device, deviations in the manufacturing accuracy of the housing and/or the coaxial plug can be compensated for
Implementation Method 3
the housing is for example connected to a ground potential of the circuit board via the outer conductor
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).