Shielding Box Hinge Mechanism for Uniform Seal Compression
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Solution Overview
Problem
Existing shielding boxes face challenges in achieving uniform load distribution on seals during closure, leading to uneven sealing and potential shortening of seal lifespan, often requiring complex mechanisms for translational movement.
Innovation Solution
A shielding box design that divides the closing process into stages, using a lifting mechanism with studs and guides for perpendicular displacement and pivoting, ensuring uniform seal compression through a combination of hinge-based pivoting and translational movement, with a latching mechanism for secure closure, and a linear drive for controlled slider displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pivoting hinge is used to connect the two housing parts, then the shielding box can be opened and closed, but the seal is compressed unevenly leading to reduced seal lifespan
Solution Approach 1:
The closing motion is segmented into two distinct phases: first a pivoting phase that brings the housing parts into alignment, then a translational phase that uniformly compresses the seal. This segmentation allows each phase to optimize for its specific function without compromising the other.
Solution Approach 2:
The hinge mechanism is designed to transition dynamically from a pivoting motion to a translational motion during the closing process. The guide elements enable this dynamic change in motion type, ensuring uniform seal compression while maintaining ease of operation.
2Reliability
If a complex mechanism is used to achieve translational movement of housing parts, then uniform seal compression is achieved, but the device complexity increases
Solution Approach 1:
The hinge assembly serves multiple functions: it enables the initial pivoting motion for easy operation, guides the subsequent translational movement for uniform seal compression, and provides structural support. This multi-functionality eliminates the need for separate complex mechanisms.
Solution Approach 2:
The guide elements integrated into the hinge mechanism automatically ensure uniform seal compression during the translational phase without requiring additional control systems or complex mechanisms. The structure itself provides the necessary guidance and uniformity.
Data Source
AI summary
A shielding box for providing high frequency electromagnetic shielding where a first housing part and a second housing part are connected to each other by a hinge so as to be displaceable between an open position and a closed position. Further, a lifting mechanism is used which has at least one lifting stud and at least one guide, the guide being mounted to one of the housing parts and the lifting stud being mounted to the guide so as to be displaceable between an extended position and a retracted position in a direction which is generally perpendicular to a plane along which the first and second housing parts abut at each other in the closed position. The lifting stud is adapted for displacing the other one of the housing parts.