冠簧连接器电连接性能退化分析

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关键词：冠簧连接器；电连接性能；失效机理；衰减模型；使用寿命中图分类号： U270.38+1 文献标志码：B doi：10.20213/j.cnki.tdcl.2025.03.020

Abstract：The electric performance of the crown spring connector is a key index of the electric control system.The analysis has been made for the failure mechanism of the crown spring connector used in the field of high-speed rail transit by inspecting the failed parts and the mechanical simulation has been done for the contact part of crown spring connector by means of numerical simulation so as to determine that the stress relaxation of jack strip is the main factor of degradation of electric connection performance.The insertion and extraction force and the contact resistance are used to represent the electric connection performance of the crown spring connector，and the insertion and extraction force test and the contact resistance test have been done.Acording to the test data，the electric connection performance of crown spring connector under diferent mileages has been analyzed and a degradation model of electric connection performance of crown springconnector has been built up to verifythe corelation between the degradation model of electricconductivity performance of crown spring connector and the test data.The service life has been quantitatively predicted and some maintenance suggestions have been given acordingly.

Key words： crown spring connector; electric connection performance； failure mechanism；degradation model;service life

1冠簧连接器简介

插针和冠簧插孔两部分，主要用于实现电路的导通或电信号的控制，可有效保证功率电流或信号稳定可靠地流通，具有通载能力强、接触电阻低而稳定、插拔力冠簧连接器（图1）是一种典型的电连接器，包括柔和、成本和制造工艺性良好等优点，广泛应用于轨道交通、汽车、电力、通信、电子以及航空航天、军事卫星等领域[1-3]。（剩余8354字）