Connector Assembly Shielding Shell Elastic Arms Grounding
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Solution Overview
Problem
Current board-to-board connector assemblies face challenges with poor shielding performance due to gaps between shielding shells and rigid structures, making it difficult to achieve complete coverage and proper grounding, which affects the mating and electrical connection of pins and contact members.
Innovation Solution
A connector assembly design featuring a shielding shell with elastic arms and grounding portions that securely cover both the first and second terminals, ensuring double grounding and improved shielding by eliminating the need for additional insulating materials around the second terminal, facilitating easy mating and complete coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a rigid shielding shell is used to cover the terminals, then the shielding structure is simple, but gaps are easily formed between shielding shells reducing shielding effectiveness
Solution Approach 1:
The patent applies the dynamics principle by transforming the rigid shielding shell into a flexible structure with elastic arms that can dynamically adapt during mating. The elastic arms can bend and deform to ensure continuous contact between shielding shells, eliminating gaps while maintaining structural simplicity. This resolves the contradiction by making the shielding structure adaptable rather than static.
Solution Approach 2:
The patent directly applies this principle by using flexible elastic arms instead of rigid shielding shells. The elastic arms can deform elastically to maintain contact during the mating process, ensuring complete coverage of terminals without forming gaps. This flexible structure maintains shielding effectiveness while keeping the overall design simple.
2Ease of manufacture
If both first and second shielding shells are made rigid for structural simplicity, then manufacturing is easier, but improper mating occurs reducing contact quality
Solution Approach 1:
The patent applies dynamics by making the first shielding shell flexible with elastic arms that can adapt during mating. This flexibility compensates for minor misalignments between the plug and socket, ensuring proper contact between shielding shells without requiring high manufacturing precision. The elastic arms deform to accommodate variations in mating alignment.
Solution Approach 2:
The patent changes the physical parameter of rigidity to flexibility in the shielding shell structure. By transforming the rigid material property into a flexible one with elastic characteristics, the structure can accommodate manufacturing tolerances and alignment variations, achieving reliable mating contact without compromising manufacturing simplicity.
3Reliability
If insulating material is added around the second terminal for isolation, then electrical isolation is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the shielding function and electrical isolation function into a single integrated structure. The flexible first shielding shell provides both electromagnetic shielding for the first terminal and electrical isolation for the second terminal through its elastic arms. This eliminates the need for separate insulating materials, reducing structural complexity while maintaining isolation effectiveness.
Solution Approach 2:
The patent applies multi-functionality by designing the first shielding shell to perform multiple functions: shielding electromagnetic interference, providing electrical isolation, and enabling mechanical mating. The elastic arms of the first shielding shell simultaneously achieve shielding coverage and electrical isolation without requiring additional components, thus reducing 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 design enhances the shielding effect by ensuring complete coverage of terminals and secure grounding, simplifying the mating process and reducing costs by eliminating the need for additional shielding materials, while maintaining effective electrical connections.
Implementation Method 1
an elastic arm bending laterally and extending from a side of the extending arm
Data Source
AI summary
A connector assembly includes a first electronic component, an electrical connector and a shielding shell fixed to the first electronic component, a second electronic component located above the first electronic component, and a mating member fixed to the second electronic component. The electrical connector includes an insulating body, and a first terminal electrically connected to the first electronic component. The mating member includes a second terminal electrically connected to the second electronic component. The shielding shell has a first grounding portion and a second grounding portion, and covers outside the first terminal. The first grounding portion is electrically connected to the first electronic component. When the mating member is downward mated with the electrical connector, the second terminal is inserted into the shielding shell to be mated with the first terminal, and the second grounding portion abuts the second electronic component to be electrically connected to the second electronic component.