USB Plug Connector Fixing Base for Soldering Pin Alignment
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Solution Overview
Problem
Existing USB electrical plug connectors face challenges in soldering due to the lack of a structure to limit soldering pins, leading to slanting issues and difficulties in the soldering process.
Innovation Solution
The design incorporates a metallic shell with an insulated housing and a fixing base that includes upper-row and lower-row plug terminals, where the tail portions of these terminals are positioned in through grooves defined by barriers, preventing slanting and allowing for stable soldering, and features a 180-degree symmetrical pin-assignment for dual orientation insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the soldering pins are exposed from the rear side of the insulated housing without additional limiting structures, then the structure is simple, but the soldering pins are prone to slanting and the soldering process becomes difficult
Solution Approach 1:
The fixing base is segmented into multiple functional elements: a base body, barriers extending from the base body, and through grooves formed between the barriers. This segmentation allows each element to perform a specific function - the barriers provide lateral limiting while the through grooves provide positioning, collectively solving the soldering pin stability issue without excessive complexity
Solution Approach 2:
The fixing base acts as an intermediary structure between the insulated housing and the soldering pins. It provides the necessary limiting and positioning functions that the insulated housing alone cannot provide, facilitating the soldering process while maintaining overall structural simplicity
2Device complexity
If the tail portions of plug terminals are positioned without limiting structures, then the assembly process is simple, but the tail portions cannot be stably positioned and are prone to slanting
Solution Approach 1:
The through grooves are specifically formed only in the regions where the tail portions of the plug terminals need to be positioned. This localized approach provides precise positioning exactly where needed, while avoiding unnecessary structures in other areas, thus maintaining overall structural simplicity
Solution Approach 2:
The through grooves are pre-formed in the fixing base before the plug terminals are assembled. This preliminary action ensures that when the tail portions are inserted, they are automatically guided and positioned correctly, preventing slanting during the soldering process without requiring complex adjustment mechanisms
Data Source
AI summary
An electrical plug connector includes an insulated housing, terminals and a fixing base. The insulated housing includes a base member and terminal slots defined through the base member along a longitudinal direction. The terminals are at the insulated housing, and each of the terminals includes a body portion and a tail portion. The connecting segments are at the terminal slots respectively, and the tail portions are respectively extending from the connecting portions and protruded out of a rear side of the base member. The fixing base is at the rear side of the base member, and includes a partition board and barriers. The partition board defines two lateral surfaces corresponding to each other. The barriers are respectively extending from the lateral surfaces, and through grooves are defined between the barriers. Each of the barriers is covered to two sides of the corresponding soldering portion.