Pull-Ring Cable-End Connector for Low-Force Detachment

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Solution Overview

Problem

Existing connectors face challenges with increased friction during plugging and unplugging due to higher current demands, and spatial interference between wires and circuit board housings, especially when the distance between the circuit board and housing is short.

Innovation Solution

A connector design featuring a base body with a docking portion, conductive parts, and a pull ring, along with a pivotally connected pull ring and engaging components, allowing for easy detachment and reduced interference with circuit board housings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If the quantity of conductive terminals on the connector is increased to transport larger currents, then the current transport capacity is improved, but the friction during plugging and unplugging increases making operation difficult

Engineering Contradiction:
Improvecurrent transport capacityVSAvoidplugging and unplugging ease
Core Design Contradiction:
PowerVSEase of operation

Solution Approach 1:

The patent applies the dynamics principle by introducing a pull ring that can pivot between a first position (engaged with the engaging component) and a second position (disengaged). This dynamic mechanism allows the connector to be easily pulled apart by rotating the pull ring, significantly reducing the friction and effort required during unplugging operations while maintaining multiple conductive terminals for high current transport capacity

Inventive Principle:
Principle #15Dynamics

2Volume of moving object

If the distance between the circuit board and housing is short, then the space utilization is improved, but spatial interference occurs between the wires and the housing

Engineering Contradiction:
Improvespace utilizationVSAvoidspatial interference
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies the dimensionality change principle by routing wires through bending portions that extend laterally from the main body of the connector. This three-dimensional wire arrangement allows wires to bypass the housing space efficiently, eliminating spatial interference while maintaining compact distances between the circuit board and housing, thus optimizing space utilization

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If the pull ring is pivotally connected to the base body, then the ease of operation for detachment is improved, but the device complexity increases

Engineering Contradiction:
Improvedetachment easeVSAvoidconnector structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies the multi-functionality principle by designing the pull ring to serve multiple purposes: it acts as a leverage mechanism to reduce detachment force, provides a user grip point for easy operation, and when in the engaged position, works with the engaging component to secure the connector. This multi-functional design achieves easy detachment without proportionally increasing structural complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250343368A1Connector and cable-end connector
Publication Date: 2025.11.06 BELLWETHER ELECTRONICS KUNSHAN
  • US20250343368A1 patent drawing
  • US20250343368A1 patent drawing
  • US20250343368A1 patent drawing

AI summary

A connector includes a base body, a conductive part, a plurality of conductive terminals, a cap body, and a pull ring. The base body includes a docking portion and a blocking portion. The blocking portion bends to define a groove. The conductive part is accommodated in the base body. The conductive part includes a first conductive part and a second conductive part separated from the first conductive part. The first conductive part includes a first main body and a first bending portion bent from the first main body. The second conductive part includes a second main body and a second bending portion bent from the second main body. The first main body and the second main body are extended in parallel. The pull ring is pivotally connected to the base body by the blocking portion.