Connector Insertion Protection Structure for Reverse Mating Prevention
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Solution Overview
Problem
Existing electrical connection devices lack a protective structure to prevent incorrect insertion of cable-end connectors into board-end connectors, leading to unstable connections and potential misalignment.
Innovation Solution
The electrical connection device incorporates protruding members on the board-end connector, which abut against the cable-end connector to prevent reverse insertion and provide stable support, eliminating the need for costly mold reformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cable-end connector is designed without a protective structure, then the device complexity is low and manufacturing is simple, but the connector can be incorrectly inserted in reverse orientation
Solution Approach 1:
The patent applies asymmetry by designing the protruding member with a non-symmetric shape that only matches a corresponding recess in the board-end connector when inserted in the correct orientation. The protruding member has a specific geometric configuration (with a flat surface and rounded end) that prevents reverse insertion by creating a physical mismatch when rotated 180 degrees, thereby ensuring insertion correctness without adding complex protective structures.
2Stability of the object's composition
If the metal outer shell uses only a straight-line end edge to support the cable-end connector, then the manufacturing is simple, but the connection stability is insufficient
Solution Approach 1:
The patent applies local quality by modifying only the local region of the metal outer shell where support is needed. The protruding member is added specifically at the end edge area to provide stable support for the cable-end connector, while the rest of the outer shell maintains its simple straight-line configuration. This localized modification enhances connection stability without requiring complex changes to the overall structure.
3Reliability
If protruding members are added to prevent reverse insertion, then insertion correctness is improved, but the manufacturing cost increases
Solution Approach 1:
The patent applies merging by integrating the protruding member directly into the metal outer shell as a unified component. The protruding member is formed as an integral part of the outer shell through existing manufacturing processes, eliminating the need for separate protective structures or additional assembly steps. This integration approach ensures insertion correctness while avoiding increased manufacturing costs by utilizing the existing mold and production methodology.
Data Source
AI summary
An electrical connection device is provided and includes a cable-end connector and a board-end connector. The cable-end connector includes an insulative housing and a circuit board. The insulative housing includes a housing body and a mating plate, the housing body has a front end face, the mating plate has a front end portion. The board-end connector includes an insulative base, a plurality of terminals and a metal outer shell. A mating groove is formed between the metal outer shell and the insulative base and is used to allow the mating plate to mate therewith. One of the insulative base and the metal outer shell is provided with a protruding member and when the cable-end connector reversely inserts into the board-end connector, the protruding member stops the front end portion of the mating plate.