墙壁开关按钮卡扣接触圆角对脱扣力的影响研究

The Research of the Effects of Contact Radius of the Switch Button Clip on The Button Trip Force

本文对按钮卡扣的接触圆角R对按钮脱扣力的影响进行了研究,首先推导了接触圆角R对按钮卡扣有效扣合量ΔS;的影响公式,然后使用FEA软件对此公式进行了验证。先进行FEA分析试验对标,再利用该准确的FEA分析模型,分析了不同按钮卡扣接触圆角R对按钮脱扣力的影响曲线和影响敏感度曲线。最后结合该影响曲线及试验结果作出了接触圆角R=0.2 mm是最佳值的结论。

In this article a research was given to the effects of contact radius of the switch button clip on the button trip force.At the beginning,a formula of the influence of the contact radius,R on the button effective clip interference,ΔS;was deduced.The next step is to use FEA software to verify this formula.An analysis of the button trip force was firstly done and the results was confirmed by the test results.Then this FEA method was reused to analyze the curve of contact radius to the button trip force,and the curve of the sensitivity of influence of the contact radius on the button trip force.Finally according to these curves and test experience a conclusion was made that the clip contact radius,R=0.2 mm is the best value.