Straight Insertion Self-Locking Electrical Connector

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Solution Overview

Problem

Conventional straight insertion electrical connection devices suffer from complex operation, poor stability, and safety concerns due to loose connections and potential electric sparks, while rotary plugs and sockets have issues with power disconnection and contact stability.

Innovation Solution

A straight insertion self-locking anti-explosion electrical connection device featuring a plug and socket with parallel inclined metal contacts, self-locking portions, and a self-locking mechanism that ensures instant and stable contact, preventing electric sparks and allowing direct and rapid disconnection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional straight insertion plugs and sockets are used, then the structure is simple and ease of operation is good, but the electrical connection stability is poor and reliability is low

Engineering Contradiction:

Improveease of operationVSAvoidelectrical connection stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The plug and socket are equipped with self-locking structures that automatically engage when the plug is inserted, providing self-locking functionality without requiring additional user actions or complex operating mechanisms

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The self-locking structure integrates the locking function directly into the plug and socket components, merging the connection and locking functions into a single integrated system that maintains both simplicity and reliability

Inventive Principle:

Principle #5Merging (Combining)

2Device complexity

If conventional metal contacts are used, then the structure is simple, but electric sparks occur during insertion or pullout and safety is compromised

Engineering Contradiction:

Improvestructure complexityVSAvoidelectric spark

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The self-locking structure engages before the metal contacts make full contact during insertion, and maintains engagement throughout the connection process, preventing sparks by ensuring stable contact before power transmission begins

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The self-locking mechanism converts the potential harmful effect of loose connections into a beneficial stable connection state, where the locking structure ensures firm contact between metal electrodes, eliminating sparks and improving safety

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Object-affected harmful factors

If rotary plugs and sockets are used, then electrical safety is improved, but the operation becomes complicated and power disconnection speed is reduced

Engineering Contradiction:

Improveelectrical safetyVSAvoidoperation complexity

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

Instead of rotating the plug to disconnect power as in conventional rotary designs, this invention allows direct linear pullout of the plug while maintaining self-locking engagement during insertion, inverting the traditional rotary operation into a simpler linear motion that achieves both safety and speed

Inventive Principle:

Principle #13The other way round (Inversion)

4Device complexity

If single-side locking structure is used, then the structure is simpler, but gaps occur between contacts and electrical connection stability deteriorates

Engineering Contradiction:

Improvestructure complexityVSAvoidelectrical connection stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The self-locking structure employs asymmetric design elements where the locking surfaces and engagement geometries are specifically configured to prevent gaps and ensure uniform contact pressure across all contact points, improving electrical connection stability

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The locking structure applies localized quality enhancements at the contact interfaces, where specific surface treatments, geometries, or material properties are optimized at critical contact zones to eliminate gaps and ensure stable electrical connection without complicating the overall structure

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10186818B2Straight insertion self-locking anti-explosion electrical connection device, and plug and socket thereof

Publication Date: 2019.01.22 ZHU ZHAOYONG

AI summary

A straight insertion self-locking anti-explosion electrical connection device, and a plug and a socket thereof relate to the field of conductive connection devices. The plug has a plugging bolt. The plugging bolt has two or more plug power supply electrodes and a plug grounding electrode. The side wall of the plugging bolt has a plug self-locking portion, and the plug self-locking portion is a circular hole, or a recessed groove and a recessed point having a curved surface structure. The socket has a jack, and the wall of the jack has two or more socket power supply electrodes and a socket grounding electrode. The wall of the jack has socket self-locking portions, and each socket self-locking portion has a clamping and locking member having a raised or recessed curved surface structure or a circular hole. Corresponding electrodes of the plug and the socket are mutually paralleling inclined planes.