Onboard Camera Chassis Shield Plate Assembly for EMI Shielding
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Solution Overview
Problem
The existing methods for assembling onboard camera chassis with shield members, such as 'shield fingers' or 'gaskets,' result in increased parts and unreliable conductivity due to the use of adhesive tape, which can lead to positional displacement or detachment during assembly.
Innovation Solution
The camera chassis design incorporates a shield plate with insertion portions that fit into clearances between the bottom and top face plates, allowing for easy assembly while providing electromagnetic shielding, using metal plate members with bent portions that form V or U shapes to secure the shield plate in place and ensure conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shield members such as shield fingers or gaskets are used between metal plates, then electromagnetic wave shielding performance is secured, but the number of parts increases
Solution Approach 1:
The shield plate is integrated directly into the metal plate structure, eliminating the need for separate shield members. The shielding function is merged with the structural plate itself, reducing the number of parts while maintaining electromagnetic wave shielding performance.
Solution Approach 2:
The metal plates serve dual functions: providing structural support and providing electromagnetic wave shielding. By making the plates themselves conductive and continuous, they perform both mechanical and electromagnetic functions without requiring additional specialized components.
2Ease of manufacture
If adhesive tape is used to mount shield members, then assembly is simplified, but conductivity cannot be secured as expected due to material quality
Solution Approach 1:
The adhesive tape intermediary is completely removed from the assembly. The shield plate is directly integrated with the metal plates through mechanical engagement, eliminating the unreliable adhesive layer and ensuring direct metal-to-metal conductivity.
Solution Approach 2:
Instead of using adhesive tape as an intermediary that compromises conductivity, the design uses direct metal contact as the intermediary, ensuring reliable electrical connection while maintaining assembly simplicity.
3Ease of manufacture
If adhesive tape is used for mounting shield members, then installation is easier, but the shield member may be positionally displaced or detached
Solution Approach 1:
The shield plate is divided into multiple engagement portions that fit into corresponding clearances of the metal plates. This segmentation provides multiple anchoring points that prevent positional displacement and detachment while maintaining easy assembly.
Solution Approach 2:
The shield plate design allows for dynamic adjustment during assembly through the engagement portions, enabling easy installation while the final assembled state provides rigid stabilization against displacement and detachment.
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 simplifies the assembly process, reduces the number of parts, and ensures reliable conductivity and shielding between the plates, facilitating the assembly of the camera chassis while maintaining electromagnetic wave shielding performance.
Implementation Method 1
In order to establish conduction between the metal plates and to secure electromagnetic wave shielding performance, a shield finger or a gasket is used as a shield member between the metal plates
Data Source
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.