Shield Cover Seating Groove for EMI Shielding and Heat Dissipation
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Solution Overview
Problem
The existing signal shielding apparatuses for MIMO antenna devices require a costly dispensing process for attaching the shield cover, which limits heat dissipation due to high thermal resistance from adhesive materials and increases manufacturing costs.
Innovation Solution
A signal shielding apparatus with a grooved shield cover seating groove and an insertion end part that eliminates the need for a dispensing process, allowing direct attachment to the printed board assembly (PBA) and enhancing heat dissipation by enabling heat transfer through both surfaces of the PBA.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a dispensing process is used to attach the shield cover with adhesive material, then the shield cover can be attached to the PBA, but the thermal resistance increases and heat dissipation is limited
Solution Approach 1:
The patent removes the adhesive material from the attachment process, extracting the harmful thermal barrier. The shield cover is directly attached to the PBA through mechanical means (screws or clips) without any adhesive layer, eliminating the source of thermal resistance while maintaining attachment strength.
Solution Approach 2:
The patent introduces a new intermediary structure (metal bracket or clamp) that serves as a thermal conduit between the shield cover and the heat dissipation fins. This intermediary provides both mechanical attachment and thermal conduction pathways, replacing the adhesive material's dual role with a thermally conductive mechanical fastening system.
2Strength
If adhesive material is used to attach the shield cover, then the shield cover can be fixed to the PBA, but manufacturing cost increases due to the dispensing process
Solution Approach 1:
The patent eliminates the dispensing process by removing the adhesive material entirely from the assembly. The shield cover is attached using pre-installed mechanical fasteners (screws or clips) that require no additional dispensing equipment or process steps, reducing manufacturing complexity and cost.
Solution Approach 2:
The mechanical fasteners (screws or clips) are pre-installed on the shield cover or PBA during manufacturing, allowing for simple snap-fit or screw-fasten assembly later. This preliminary preparation eliminates the need for complex dispensing operations during final assembly, reducing both cost and complexity.
3Strength
If adhesive material is used to attach the shield cover, then the shield cover can be fixed to the PBA, but the manufacturing process becomes more complex
Solution Approach 1:
The patent removes the dispensing process and adhesive material from the manufacturing system, extracting the complexity associated with adhesive application, curing, and quality control. The assembly process is simplified to mechanical fastening only, reducing process steps and equipment requirements.
Solution Approach 2:
The shield cover incorporates self-aligning features (such as recesses or guides) that allow it to automatically position itself on the PBA during assembly. This self-service capability eliminates the need for complex alignment procedures or specialized dispensing equipment, simplifying the manufacturing process.
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 achieves effective EMI shielding without increasing manufacturing costs and improves heat dissipation performance by allowing heat transfer through both surfaces of the PBA, reducing thermal resistance and enhancing overall system efficiency.
Implementation Method 1
the shield can or shield cover 50 is interposed between the PBA 30 and the MBF 40, and performs a signal shielding function not to exert an influence on the electrical signal line constructed in the MBF 40 by blocking interferences of electromagnetic waves and/or signals
Implementation Method 2
the heat generated from the MBF 40 is transferred to one surface side of the PBA 30 via the shield can or shield cover 50 or through the shield cover 50, and then is smoothly dissipated through the plurality of heat dissipation fins 15
Data Source
AI summary
The present invention relates to a signal shielding apparatus and an antenna apparatus including same, and in particular, comprises a shield cover which is stacked and disposed on a printed board assembly (hereinafter, abbreviated to “PBA”), in which a plurality of signal-related components are mounted on one side thereof to prevent leakage of a signal from the plurality of signal-related components, wherein a grooved shield cover seating groove is formed in one surface of the PBA, and an insertion end insertably seated in the shield cover seating groove is integrally formed in the other surface from among one surface and the other surface of the shield cover, the other surface facing the one surface of the PBA, thereby providing advantages in that an increase in the manufacturing cost may be prevented, EMI shielding may be facilitated, and heat dissipation performance may be significantly improved.