Shuttered Keystone Jack Assembly for EMI Shielding and Wear Reduction
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Solution Overview
Problem
Shuttered keystone jack assemblies with metal or alloy housings for electromagnetic shielding face issues with component wear due to relative sliding and contamination ingress, as well as difficulties in distinguishing colored sockets and maintaining EMI immunity.
Innovation Solution
A shuttered keystone jack assembly design featuring a jack housing made of magnesium-zinc alloy, a chromatic plastic frame and shutter with an elastic member, which provides electromagnetic shielding while preventing contaminants and reducing wear through a pivotally connected shutter with an elastic member that automatically closes the opening, ensuring EMI immunity and color differentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal or alloy housings are used for electromagnetic shielding, then EMI immunity is improved, but component wear increases due to relative sliding between housing and biasing members
Solution Approach 1:
The patent replaces the traditional metal coil spring biasing member with an elastic body (such as rubber or plastic material) that provides the same biasing function through elastic deformation rather than mechanical coiling. This substitution eliminates the relative sliding between metal components while maintaining the electromagnetic shielding effect of the metal housing, thereby preventing component wear and extending service life without compromising EMI immunity.
2Reliability
If metal or alloy housings are used for electromagnetic shielding, then transmission quality is improved, but cost increases and color differentiation becomes difficult
Solution Approach 1:
The patent divides the outlet assembly into two distinct parts: a metal housing that provides electromagnetic shielding and a plastic face plate that provides color differentiation. The metal housing maintains transmission quality through EMI shielding, while the plastic face plate can be easily manufactured in various colors using injection molding techniques, enabling cost-effective color coding for different socket groups without compromising transmission quality.
3Object-affected harmful factors
If shutters are added to prevent contaminant entry, then contamination protection is improved, but device complexity and component wear increase due to additional sliding mechanisms
Solution Approach 1:
The patent combines the shutter function with the face plate assembly by integrating the shutter door into the face plate structure. The shutter door is pivotally connected to the frame and works in conjunction with the elastic body, eliminating the need for separate complex mechanisms. This integrated design provides contaminant protection while minimizing additional components and simplifying the overall structure.
4Object-affected harmful factors
If biasing members are used to bias shutters closed, then contaminant protection is improved, but the biasing member may be lost inside housing when detached accidentally
Solution Approach 1:
The patent replaces the metal coil spring biasing member with an elastic body made of rubber or plastic material that is integrally formed with or attached to the shutter assembly. This elastic body provides the biasing force through its inherent elasticity and is much less likely to detach or be lost inside the housing accidentally, while still maintaining the shutter's closed position to protect against contaminants.
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 prevents contaminants from entering the socket, reduces component wear, and allows for easy recognition of socket groups by color, enhancing both transmission quality and service life while maintaining EMI shielding capabilities.
Implementation Method 1
The elastic member includes a first end portion and a second end portion, wherein the first end portion and the second end portion respectively abut against the frame and the shutter
Implementation Method 2
the jack housing made of magnesium-zinc alloy, a chromatic plastic frame and shutter... providing electromagnetic shielding while preventing contaminants
Data Source
AI summary
A shuttered keystone jack assembly is provided in the disclosure. The shutter keystone jack assembly includes a jack housing, a frame, a shutter and an elastic member. The frame is detachably disposed on the jack housing and defining a receiving opening. The shutter is pivotally connected to the frame and selectively covering the receiving opening. The elastic member includes a first end portion and a second end portion, and the first end portion and the second end portion respectively abut against the frame and the shutter.