Grounding Electrical Connector with Resilient Spring

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Solution Overview

Problem

Conventional coaxial cable connectors suffer from poor grounding due to gaps between the inner sleeve and threaded interface connectors, leading to deteriorated electrical signal transmission performance.

Innovation Solution

A grounding electrical connector with a conductive grounding spring mounted in an inner sleeve, featuring an inner threaded nut that locks with the electronic device's interface, ensuring secure mechanical and electrical connection through resilient concave sections that compress and affix to the interface connector.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional coaxial cable connector is used with a threaded interface connector, then the connector can be assembled and connected, but gaps are left between the inner sleeve and the threaded interface connector resulting in poor grounding connection

Engineering Contradiction:
Improvegrounding connection qualityVSAvoidconnector structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A conductive grounding spring is introduced as an intermediary component between the inner sleeve and the threaded interface connector. The grounding spring fills the gap and provides reliable electrical contact, ensuring good grounding connection without requiring complex structural modifications to the basic connector design.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The grounding spring utilizes a flexible elastic structure that can deform and adapt to the interface between components. This flexible design allows the grounding spring to maintain reliable electrical contact while accommodating manufacturing tolerances and assembly variations, solving the grounding issue without rigid complex structures.

Inventive Principle:
Principle #30Flexible shells and thin films

2Reliability

If the nut is simply screwed onto the threaded interface connector, then assembly is simple, but the nut cannot be fully connected with the threaded interface connector leaving gaps

Engineering Contradiction:
Improveconnection reliabilityVSAvoidassembly ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The grounding spring is nested within the nut structure, specifically positioned in a groove of the nut. This nested design allows the grounding spring to be integrated into the existing nut-component without requiring separate assembly steps, maintaining ease of operation while improving connection reliability through the additional grounding contact provided by the spring.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Reliability

If the inner sleeve is directly connected to the threaded interface connector, then the structure is simple, but poor contact and poor grounding are achieved

Engineering Contradiction:
Improveelectrical contact qualityVSAvoidconnector structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The grounding spring serves as an intermediary element that bridges the inner sleeve and the threaded interface connector. This mediator component ensures reliable electrical contact and grounding by filling gaps and providing continuous conductive path, achieving improved electrical contact quality without requiring fundamental structural changes to the connector.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This design achieves a secure and lasting grounding connection, enhancing signal transmission quality and electrical performance by ensuring effective contact between the connector and the electronic device.

Implementation Method 1

a conductive grounding spring mounted in the annular groove of the inner sleeve and having multiple inner resilient concave sections. When the threaded section of the nut is screwed onto the threaded interface connector of the electronic device, the inner resilient concave sections of the conductive grounding spring are mechanically and electrically connected with a circumference of the threaded interface connector

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS7938680B1Grounding electrical connector
Publication Date: 2011.05.10 EZCONN
  • US7938680B1 patent drawing
  • US7938680B1 patent drawing
  • US7938680B1 patent drawing

AI summary

A grounding electrical connector includes: an inner sleeve, a front end of the inner sleeve having an outer flange, an annular groove being formed on an inner circumference of the outer flange; an outer sleeve coaxially positioned around the inner sleeve; a nut formed with an inner threaded section for locking with a threaded interface connector of an electronic device, the nut further having a receptacle for receiving the outer flange of the inner sleeve therein; and a conductive grounding spring mounted in the annular groove of the inner sleeve and having multiple inner resilient concave sections. When the threaded section of the nut is screwed onto the threaded interface connector of the electronic device, the inner resilient concave sections of the conductive grounding spring are mechanically and electrically connected with a circumference of the threaded interface connector.