Conductive Sheet Shielding Assembly With Self-Positioning Fixation
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Solution Overview
Problem
Existing conductive sheets are difficult to position accurately and securely between metallic plates, leading to instability and variability in assembly quality.
Innovation Solution
A conductive sheet assembly featuring a metallic plate and a separate sheet fixing member with positioning recesses and protrusions allows easy alignment and secure fixation, using mechanical clinch parts for stable positioning and attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive sheet is sandwiched by two separate metallic plates, then the electromagnetic shielding structure is formed, but the positioning accuracy and assembly stability are poor
Solution Approach 1:
The sheet fixing member integrates both the function of fixing the conductive sheet and positioning itself relative to the metallic plate. The positioning protrusion automatically aligns with the positioning recess during assembly, enabling self-positioning without additional fixtures or complex alignment procedures, thus improving both positioning accuracy and assembly stability.
Solution Approach 2:
The positioning protrusion fits into the positioning recess like a nested structure, creating a precise mechanical interface. This nested design ensures accurate positioning of the sheet fixing member relative to the metallic plate while maintaining structural integrity and assembly stability.
2Reliability
If the sheet fixing member is separate from the metallic plate, then the conductive sheet can be securely fixed, but the positioning and alignment are difficult
Solution Approach 1:
The positioning protrusion and recess create a self-aligning mechanism that guides the sheet fixing member into the correct position during assembly. This self-service feature eliminates the need for complex external positioning tools or procedures, making the assembly process easy while maintaining secure fixation.
Solution Approach 2:
The positioning protrusion and recess act as intermediary elements between the sheet fixing member and the metallic plate. These intermediary features facilitate easy alignment and positioning while the clamping force provides secure fixation, resolving the contradiction between ease of positioning and fixation security.
3Manufacturing precision
If positioning recess and protrusion are added, then the positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The positioning recess and protrusion are localized features added only at the critical interface between the sheet fixing member and the metallic plate. This local modification approach improves positioning accuracy without requiring complex changes to the overall structure of either component, thus minimizing the increase in device complexity.
Solution Approach 2:
The positioning function is segmented into two simple complementary features: a positioning recess in one component and a positioning protrusion in the other. This segmentation allows each feature to be simple in design while collectively providing accurate positioning, avoiding the need for a single complex positioning mechanism.
Data Source
AI summary
A conductive assembly including: a conductive sheet; a metallic plate; and a sheet fixing plate separate from the metallic plate, wherein: a portion of the conductive sheet is sandwiched between the metallic plate and the sheet fixing plate, the sheet fixing plate is overlapped with and fixed to the metallic plate, and a positioning recess is formed in one of the metallic plate and the sheet fixing plate, and a positioning protrusion is formed in the other so as to be positioned in contact with an edge of the positioning recess.