Shield Wire Ferrule Stopper Structure for Wire Seal Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shield wire assemblies in electrical machinery connectors face issues with ferrule movement damaging the wire seal and excessive ferrule displacement, impairing waterproof performance.
Innovation Solution
A shield wire assembly incorporating a conductive ferrule and a stopper with first and second stopper portions to prevent ferrule displacement and protect the wire seal from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the ferrule is disposed in the vicinity of the wire seal to reduce size, then the connector size is reduced, but the ferrule may move and contact the wire seal, damaging it and impairing waterproof performance
Solution Approach 1:
A stopper member is introduced as an intermediary component between the ferrule and the wire seal. This stopper prevents direct contact between the ferrule and wire seal, eliminating the damage risk while maintaining the compact arrangement. The stopper acts as a protective mediator that allows the ferrule to be positioned close to the wire seal without causing harm.
2Reliability
If the ferrule is grounded with elasticity using the metal shell and spring piece, then grounding is achieved, but excessive displacement of the ferrule occurs, impairing the connection
Solution Approach 1:
The stopper member is pre-positioned between the ferrule and wire seal to establish a predetermined displacement limit. Before any excessive movement can occur, the stopper is already in place to constrain the ferrule's motion. This preliminary positioning prevents the ferrule from displacing beyond the elastic range of the spring piece, ensuring both grounding functionality and positional stability.
3Reliability
If the ferrule moves during handling such as pulling the wire, then the wire seal may be damaged, but preventing movement entirely may affect grounding elasticity
Solution Approach 1:
The stopper member provides localized protection at the critical interface between the ferrule and wire seal, while leaving other portions of the ferrule free to move elastically for grounding purposes. This localized constraint allows the ferrule to maintain its elastic grounding function in most directions while preventing harmful movement specifically toward the wire seal.
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
The assembly effectively prevents ferrule displacement and damage to the wire seal, maintaining waterproof integrity while ensuring stable electrical connections.
Implementation Method 1
The ferrule is conductively connected to, and adapted to ground, the braided wire
Data Source
AI summary
A shield wire assembly comprises a shield wire, a conductive ferrule, a wire seal and a stopper. The shield wire includes a central conductor and a braided shielding wire. The ferrule is conductively connected to, and adapted to ground, the braided shielding wire. The stopper is arranged between the ferrule and the wire seal, and includes a first stopper portion suppressing displacement of the ferrule in an inward radial direction and a second stopper portion suppressing displacement of the ferrule in a direction toward the wire seal.