Bracket Assembly Grounding Metal Support to Reduce EMI
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Solution Overview
Problem
Metal supports used in mobile devices to stabilize electronic components interfere with electromagnetic signals, reducing communication performance and user experience.
Innovation Solution
A bracket assembly incorporating a multi-contact spring that connects the metal support to the ground electrode of the mobile device's metal cover, reducing the overall electric potential of the metal support and minimizing electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a metal support is used to stabilize the electronic component, then the rigidity and stability of the support are improved, but electromagnetic interference with communication elements increases
Solution Approach 1:
A non-conductive bracket assembly is introduced as an intermediary component between the metal support and the electronic component. This bracket assembly includes a non-conductive support body that mechanically supports the electronic component while electrically isolating it from the metal support, thereby preventing electromagnetic interference while maintaining structural stability.
Solution Approach 2:
The material parameter of the support structure is changed from conductive metal to non-conductive material (such as plastic or polymer). This parameter change eliminates the electromagnetic interference caused by metal while preserving the mechanical support function through the non-conductive bracket assembly.
2Object-affected harmful factors
If a non-metal support is used to reduce electromagnetic interference, then communication performance is improved, but the rigidity and load-bearing capacity may be reduced
Solution Approach 1:
The bracket assembly employs composite material construction, combining non-conductive materials (plastic/polymer) for the main body with integrated metal reinforcement elements or snap-fit structures. This composite approach provides both electromagnetic isolation and sufficient mechanical strength to support the electronic component.
Solution Approach 2:
The support structure is segmented into multiple functional parts within the bracket assembly, including a support body, snap-fit structures, and reinforcement elements. This segmentation allows each part to be optimized for its specific function while working together to provide both electrical isolation and mechanical strength.
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 effectively reduces electromagnetic interference and improves user experience by grounding the metal support without altering its mounting structure, while also preventing static electricity from damaging electronic components.
Implementation Method 1
the at least one first elastic part is connected to the at least one first pressure contact part and the at least one fixing part and is configured to provide a first restoring force to the at least one first pressure contact part
Implementation Method 2
the at least one second elastic part is connected to the at least one second pressure contact part and the at least one fixing part and is configured to provide a second restoring force to the at least one second pressure contact part
Data Source
AI summary
A bracket assembly for use in a mobile terminal includes a metal support and a multi-contact spring. The metal support is configured to support an electronic component of the mobile terminal. The multi-contact spring includes a first pressure contact part, a second pressure contact part, a first elastic part, a second elastic part, and a fixing part. The multi-contact spring is fixed to a frame of the mobile terminal by a fastener extending through the fixing part into the frame. The first elastic part is connected to the first pressure contact part and the fixing part and is configured to provide a first restoring force to the first pressure contact part such that the first pressure contact part abuts against a metal cover of the mobile terminal and is grounded.