Electrical Connector Shielding Rivet Line Position
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Solution Overview
Problem
Existing electrical connectors, such as Type C 3.1, are prone to damage due to excessive external forces and have complex assembly processes that lead to assembly deviations and reduced efficiency.
Innovation Solution
The electrical connector design includes a metal inner shell with a riveting line on the top wall, supporting legs, and elastic arms, along with a metal outer shell with bent side portions and buckle protrusions, which enhances structural stability and simplifies assembly by ensuring proper alignment and secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the metal inner shell is fixed to the insulating body by riveting and pressing, then the connector can be assembled, but the assembly process is complicated and has large deviation affecting assembly efficiency
Solution Approach 1:
The patent combines the positioning and fixation functions into a single integrated structure. The metal inner shell includes built-in positioning protrusions that automatically align with positioning grooves on the insulating body, eliminating the need for separate fixtures and multiple assembly steps. This merging of functions simplifies the assembly process and improves efficiency.
Solution Approach 2:
The metal inner shell is designed with self-positioning features where protrusions on the inner shell automatically engage with grooves on the insulating body during assembly. This self-aligning mechanism eliminates the need for external fixtures and manual positioning, allowing the component to self-assemble with high precision and reducing assembly complexity.
2Ease of manufacture
If the riveting line is located at the bottom of the metal inner shell, then the connector can be assembled, but there is a large gap with respect to the SMT board surface causing the metal inner shell to crack under external force
Solution Approach 1:
The patent relocates the riveting line from the bottom surface to the side wall of the metal inner shell, changing the dimensional position of the fixation point. This spatial repositioning allows the riveting line to be closer to the SMT board surface, reducing the gap and preventing cracking under external forces while maintaining assembly feasibility.
Solution Approach 2:
The metal inner shell is pre-designed with an optimized riveting line position on its side wall, predetermined during manufacturing to be optimally positioned relative to the SMT board surface. This preliminary positioning ensures that when assembled, the riveting line maintains an appropriate distance from the board surface, preventing cracking before external forces are applied.
3Manufacturing precision
If fixtures are used to position the metal inner shell and metal outer shell, then the components can be aligned, but the assembly process is complicated and has risk of difficulty due to large deviation
Solution Approach 1:
Both the metal inner shell and metal outer shell are equipped with complementary positioning features - protrusions on one component fit into grooves on the other. This self-positioning mechanism automatically aligns the components with high precision during assembly, eliminating the need for external fixtures and reducing assembly complexity while maintaining manufacturing precision.
Solution Approach 2:
The patent employs asymmetric positioning features where uniquely shaped protrusions on the metal inner shell correspond to matching grooves on the metal outer shell. This asymmetric design ensures precise unidirectional alignment, preventing misalignment and deviation during assembly without requiring complex fixtures, thereby simplifying the assembly process while maintaining high positioning accuracy.
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 prevents cracking of the metal inner shell and improves assembly efficiency by providing a stable structure that is not easily damaged and allows for precise alignment and secure welding, thereby enhancing product yield and reliability.
Implementation Method 1
The base portion is attached and welded to the top wall
Data Source
AI summary
The present disclosure discloses an electrical connector including an insulating body, a number of conductive terminals disposed in the insulating body, a metal inner shell enclosing the insulating body and a metal outer shell covering the metal inner shell. The metal inner shell includes a top wall, a bottom wall and two side walls connecting the top wall and the bottom wall so as to form a receiving space to mate with a mating connector. The metal outer shell includes a base portion and two side portions bent downwardly from two sides of the base portion. The top wall is provided with a rivet line, and the base portion is attached and welded to the top wall. The electrical connector of the present disclosure has a stable structure and is not easily damaged.