Elastic Conductive Element in Electronic Device Housing
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Solution Overview
Problem
Existing EMI shielding gaskets in electronic devices often require time-consuming testing to ensure correct electrical connection and can fall during assembly, leading to potential electrical shorts and incomplete sealing issues due to incorrect thickness.
Innovation Solution
An electronic device design featuring a connecting component with an elastic conductive element and a hollow connecting body, where the elastic conductive element is moved into place using a rod element after assembly, ensuring electrical connection and retention within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thickness of the EMI shielding gasket is increased, then the electrical connection reliability is improved, but the sealing completeness deteriorates
Solution Approach 1:
The EMI shielding gasket is divided into multiple segments (first gasket segment and second gasket segment) that can be independently positioned and compressed. This segmentation allows each segment to be optimized for its specific function - electrical connection or sealing - resolving the contradiction between thickness requirements for conductivity versus sealing precision.
Solution Approach 2:
Different portions of the EMI shielding gasket structure are given different properties - the conductive portions are designed with appropriate thickness and material properties for electrical connection, while the sealing portions are designed with different geometry and material characteristics to ensure complete sealing without requiring excessive overall thickness.
2Manufacturing precision
If the EMI shielding gasket is made thinner, then the sealing completeness is improved, but the electrical connection reliability deteriorates
Solution Approach 1:
The EMI shielding gasket utilizes composite material structures with high electrical conductivity combined with appropriate mechanical compliance. This allows the gasket to achieve reliable electrical connection at reduced thickness while maintaining adequate sealing capability, resolving the trade-off between thinness for sealing and thickness for conductivity.
3Reliability
If testing is performed after assembly to verify electrical connection, then the connection reliability is ensured, but the assembly time increases
Solution Approach 1:
The EMI shielding gasket is pre-configured with specific geometric features, material properties, and positioning structures during manufacturing that ensure proper electrical connection and sealing upon installation. This preliminary preparation eliminates the need for post-assembly testing, as the design inherently guarantees correct installation, thereby reducing assembly time while maintaining connection reliability.
4Reliability
If the EMI shielding gasket adheres strongly to the connector or housing, then the electrical connection is improved, but the gasket may fall and cause electrical shorting after repeated pressing
Solution Approach 1:
The EMI shielding gasket incorporates elastic and resilient properties that allow it to dynamically adapt to assembly forces and repeated pressing operations. The gasket can compress to maintain electrical connection while its elastic recovery prevents permanent deformation and dislodgment, ensuring both reliable connection and position stability under dynamic assembly conditions.
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 reduces assembly time, prevents the conductive element from falling, and ensures reliable electrical connection and sealing, addressing the challenges of testing and thickness-related issues.
Implementation Method 1
The elastic conductive element is movably disposed in the connecting body. When a part of the elastic conductive element protrudes beyond the second opening, the elastic conductive element is connected to the second housing and the connecting body.
Data Source
AI summary
An electronic device includes a first housing, a second housing disposed on the first housing, and a connecting component. The connecting component includes a connecting body and an elastic conductive element. The connecting component is located between the first housing and the second housing. The elastic conductive element with an elastic restoring force is movably disposed in the connecting component. When a part of the elastic conductive element protrudes beyond the connecting body, the elastic conductive element is connected to the second housing and the connecting body.