Vehicle Camera Shield Plate Assembly for EMI Gap Closure
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Solution Overview
Problem
The use of shield fingers or gaskets between metal plates in camera chassis increases the number of parts and may lead to positional displacement or detachment during assembly, compromising conductivity.
Innovation Solution
A shield structure is implemented using a shield plate with bend portions that fit into clearances between the top and bottom plates, ensuring electrical conduction and electromagnetic shielding without additional parts or assembly steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shield fingers or gaskets are used between metal plates, then electromagnetic wave shielding performance is improved, but the number of parts increases and assembly complexity increases
Solution Approach 1:
The shield plate integrates both the shielding function and the structural support function into a single component. The shield plate combines the electromagnetic wave shielding performance of shield fingers with the structural stability of gaskets, eliminating the need for separate shield members and adhesive tapes, thus reducing the number of parts while maintaining shielding effectiveness.
Solution Approach 2:
The shield plate serves multiple functions simultaneously: it provides electromagnetic wave shielding, maintains the gap between metal plates, ensures electrical conduction through conductive material, and provides structural support. This multi-functionality replaces multiple separate components with a single universal element.
2Ease of manufacture
If shield members are mounted by use of adhesive tape, then assembly is simplified, but conductivity cannot be secured as expected depending on material quality
Solution Approach 1:
The shield plate's own weight and the elastic restoring force of the bent portions create self-pressure that ensures continuous contact and electrical conduction between metal plates. The conductive material in the shield plate maintains conductivity through its own structural properties rather than relying on external adhesive tapes, eliminating the variability introduced by different adhesive material qualities.
3Ease of manufacture
If adhesive tape is used for mounting of shield member, then assembly process is simplified, but shield member may be positionally displaced or detached
Solution Approach 1:
The shield plate utilizes elastic deformation of its bent portions to dynamically adapt to the gap between metal plates. The elastic restoring force continuously pushes the shield plate against the plates, maintaining constant contact pressure and positional stability. This dynamic elastic mechanism replaces static adhesive bonding, preventing displacement and detachment while simplifying assembly.
4Object-affected harmful factors
If multiple shield members are used between metal plates, then shielding performance is improved, but assembly time increases
Solution Approach 1:
Multiple shielding functions are merged into a single shield plate component. The shield plate integrates the shielding effectiveness of multiple shield fingers with the positional stability of gaskets, eliminating the need for separate components. This consolidation reduces assembly time while maintaining or improving shielding performance through the integrated design.
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
Facilitates easy assembly of the camera chassis with effective shielding between plates, reducing part count and ensuring reliable conductivity and electromagnetic interference protection.
Implementation Method 1
a shield structure is implemented using a shield plate with bend portions that fit into clearances between the top and bottom plates
Implementation Method 2
elements for shielding electromagnetic interference from passing through a gap between first and a second electrically conductive component
Data Source
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AI summary
The present technology relates to an onboard camera that enables a camera chassis to be easily assembled while providing shielding between plates. The onboard camera according to an aspect of the present technology has an internal structure including: a bottom face plate which forms a bottom face of a housing and has end portions serving as wall faces formed respectively at opposite ends of the bottom face plate; a board on which an electronic component is installed; a top face plate which covers the board and has end portions serving as wall faces formed respectively at opposite ends of the top face plate; and a shield plate which has insertion portions formed at opposite ends, the insertion portions being positioned in clearances between the end portions of the bottom face plate and the end portions of the top face plate to close the clearances. The present technology can be applied to an onboard camera.