Electromagnetic Gasket for Cable Connector EMI Shielding
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Solution Overview
Problem
Electronic equipment faces challenges in minimizing electromagnetic interference (EMI) due to electromagnetic radiation emissions and external disturbances, which can degrade performance and cause damage to other devices.
Innovation Solution
A gasket assembly structure with a frame comprising a front and back half, secured with interlocking tabs, houses an electromagnetic gasket that lines the interior perimeter and partially extends into a passageway, providing effective EMI shielding by constraining the gasket between the frame halves and ensuring direct contact with the connector body of a cable assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a gasket is placed at cable connection to minimize electromagnetic disturbances, then electromagnetic compliance is improved, but the structural complexity of the cable connection assembly increases
Solution Approach 1:
The electromagnetic gasket is nested within the cable connection assembly, with the gasket positioned inside the housing structure. The frame with front and back halves creates a nested configuration that houses the gasket while maintaining a compact overall structure. This nesting approach integrates the EMI shielding function without significantly increasing the external dimensions of the assembly.
Solution Approach 2:
The frame is divided into front and back halves that can be assembled separately around the electromagnetic gasket. This segmentation allows for easier manufacturing, assembly, and maintenance of the gasket while maintaining effective EMI shielding. The interlocking tabs provide a simple joining mechanism that reduces assembly complexity despite the segmented structure.
2Object-affected harmful factors
If an electromagnetic gasket is constrained between frame halves to provide EMI shielding, then electromagnetic compliance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The electromagnetic gasket is pre-positioned and constrained between the front and back halves of the frame during assembly. The interlocking tabs are designed to automatically locate and secure the gasket in the correct position when the frame halves are joined, eliminating the need for complex post-assembly adjustments and reducing manufacturing precision requirements.
Solution Approach 2:
The interlocking tabs act as intermediary elements that facilitate the precise positioning of the electromagnetic gasket. These tabs provide mechanical engagement points that ensure the gasket is held in the correct location relative to the frame halves, transferring positioning accuracy from the tab geometry to the gasket without requiring high-precision machining of all frame surfaces.
3Reliability
If a frame with interlocking tabs is used to secure the gasket assembly, then mechanical stability for repeated insertions is improved, but device complexity increases
Solution Approach 1:
The frame is segmented into front and back halves connected by interlocking tabs, allowing the assembly to be disassembled and reassembled multiple times while maintaining mechanical stability. This segmentation enables the gasket to be reset or replaced if needed, improving reliability for applications with repeated insertions and removals of cable assemblies.
Solution Approach 2:
The interlocking tabs combine multiple functions into a single structural element: they join the front and back halves of the frame, constrain the electromagnetic gasket in position, and provide mechanical strength for repeated assembly cycles. This merging of functions reduces the overall number of separate components needed, thereby reducing complexity despite the segmented structure.
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 disturbances by absorbing and reflecting incident radiation, maintaining mechanical stability for repeated insertions and removals, and providing a path to ground for static electricity, thus enhancing electromagnetic compliance and protecting electronic devices.
Implementation Method 1
The solution effectively reduces electromagnetic disturbances by absorbing and reflecting incident radiation
Implementation Method 2
The solution effectively reduces electromagnetic disturbances by absorbing and reflecting incident radiation
Implementation Method 3
providing a path to ground for static electricity
Data Source
AI summary
A gasket assembly structure including a frame which includes a front half and a back half joined together with a plurality of interlocking tabs located around a perimeter of the frame, defining a window, and an electromagnetic gasket, constrained between the front half and the back half of the frame; where the electromagnetic gasket lines an interior perimeter of the window and partially extends from the frame into the window, and a passageway through the window of the frame with boarders defined by the constrained electromagnetic gasket. A housing structure including a receptacle recessed within an opening on a front side of the housing, the receptacle is rigidly attached to the housing, and a gasket assembly recessed within the opening and located between the front side of the housing and the receptacle, where the gasket assembly is directly secured to the housing.