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分析了目前微惯性开关中3种闭锁机构的基本工作原理。利用力学能量方法对L型闭锁机构的闭锁梁在主电极惯性力作用下的打开状态与闭锁状态的位移比,以及闭锁梁的动态位移进行了理论推导,进一步完善了此类闭锁机构的数学模型。在闭锁梁理论公式的推导过程中,利用ANSYS仿真软件对理论公式进行验证,并明确了理论公式的适用条件。分析结果表明,仿真值与理论值之间的相对误差小于5%,证明了理论公式的准确性。为提高L型闭锁梁的闭锁稳定性,分析主要结构参数对闭锁梁结构稳定性的影响,所得结果为L型闭锁机构的设计提供了重要的理论依据。
The basic working principle of the three kinds of locking mechanism in micro inertia switch is analyzed. The mechanics energy method is used to theoretically derive the displacement ratio of the closed beam of the L-type latching mechanism under the inertial force of the main electrode to the latched state and the dynamic displacement of the latching beam, and further improve the mathematical model of the latching mechanism . In the process of deducing the theoretical formula of the closed beam, the theoretical formula is verified by ANSYS simulation software, and the applicable conditions of the theoretical formula are clarified. The analysis results show that the relative error between the simulation value and the theoretical value is less than 5%, which proves the accuracy of the theoretical formula. In order to improve the locking stability of the L-shaped latching beam, the influence of the main structural parameters on the stability of the latching beam is analyzed. The results provide an important theoretical basis for the design of L-type latching mechanism.