Cable Assembly Metal Shell with No-Joint-Line Surface
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Solution Overview
Problem
Existing cable assemblies with metal shells often experience weakened EMI prevention due to junction line splits during use, compromising their effectiveness.
Innovation Solution
A cable assembly design featuring a metal shell with a no-joint-line surface, comprising a front and rear portion enclosing the housing and cable respectively, with a receiving space and specific structural features to ensure complete enclosures and interference fit, reducing EMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a metal shell with joint lines is used to enclose the housing, then the structure can be manufactured more easily, but the EMI prevention function is weakened due to junction line splits during use
Solution Approach 1:
The patent merges the front portion and rear portion of the metal shell into a single integrated structure without joint lines. The metal shell is designed as one piece that completely encloses the housing, eliminating the junction line that would otherwise split during use and compromise EMI shielding effectiveness.
Solution Approach 2:
The patent employs a continuous metal shell structure that acts as an unbroken electromagnetic shield. By eliminating joints and seams, the metal shell functions as a complete Faraday cage, preventing electromagnetic interference from penetrating through discontinuities in the enclosure.
2Ease of operation
If a metal shell with joint lines is used, then the structure can be assembled from separate parts, but the junction line may split during use weakening EMI prevention
Solution Approach 1:
The patent combines what would traditionally be separate front and rear shell parts into a single monolithic structure. This eliminates the junction line that creates a pathway for electromagnetic interference, while the overall assembly process remains straightforward by installing the complete metal shell as one unit.
3Device complexity
If a traditional metal shell with separate front and rear portions is used, then manufacturing and assembly are simplified, but EMI shielding effectiveness is reduced
Solution Approach 1:
The patent integrates the front and rear portions of the metal shell into a single unified structure. This design choice prioritizes EMI shielding effectiveness by eliminating joint lines, while the overall device complexity remains manageable through the straightforward enclosure design.
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 design effectively reduces or eliminates electromagnetic interference (EMI) by ensuring a complete and secure enclosure of conductive terminals, housing, and PCB within the metal shell, enhancing the cable assembly's EMI prevention capabilities.
Implementation Method 1
a metal shell with a no-joint-line surface enclosing the housing and comprising a front portion enclosing the housing and a rear portion enclosing the cable
Data Source
AI summary
A cable assembly, comprising a housing having a main portion, a plurality of conductive terminals received in the main portion of the housing, a cable having a plurality of wires and a metal shell with a no-joint-line surface enclosing the housing and comprising a front portion enclosing the housing and a rear portion enclosing the cable and a receiving space passing through the front portion and the rear portion.