对乘用车后备箱盖铰链机构的分析及优化

Analysis and Optimization Aiming at Hinge Mechanism of Trunk Lid of Passenger Car

针对时下正在兴起的螺旋弹簧与气弹簧共同配合工作的乘用车后备箱盖铰链机构进行结构分析,并结合气弹簧的特性进行了两种开启状态的两个工况的理论分析。然后使用虚拟样机仿真软件ADAMS对其进行仿真和分析,发现该装置的开启和关闭过程过于费力,故以开启和关闭过程的操作力极小作为优化目标,以气弹簧和螺旋弹簧的刚度和预紧力为设计变量进行优化。最终优化的结果显示,不仅开启和关闭的初始操作力都减小了许多,而且整个开启和关闭过程都得到了极大的改善。

Structural analysis was made aiming at a type of passenger vehicle’s trunk hinge driven by spiral spring and gas spring, followed by theoretical analysis of two opening states in two conditions due to the character of gas spring. Then simulation and analysis were made with the help of ADAMS,a simulation software of virtual prototype. After simulation and analysis, the objective of optimization that the operation force during opening and closing be less was established because of the hardness during the course of closing and opening, with the stiffness and preload of the spiral spring and gas spring acting as design variables. Finally, the result of optimization reveals that the initial operating force of opening and closing was decreased, but the operating force during the whole courses was improved greatly.