目的 通过对儿童安全座椅整体包装件开展优化设计，提高包装件的防护性能，避免座椅在物流运输过程中造成的外观性、功能性损坏，以节约生产成本。方法 利用有限元方法建立座椅和包装件有限元模型，并开展不同工况下的仿真分析。通过测试产品物理性能，验证模型的有效性。基于跌落仿真和试验结果，从包装设计和座椅结构两方面提出优化方案，并结合优化结果确定最佳方案。结果 跌落仿真与试验结果一致，且不同工况下座椅椅背受损的情况较多，将其确定为主要研究对象。对此提出的包装优化方案保护性能更佳，在不同跌落工况下应力均有所降低，其中在侧面跌落工况中结构的最大应力降低至23.4 MPa，接近材料屈服值，优化比例相对原始包装降低了11.0%。结论 仿真与试验结果基本吻合，验证了有限元模型的有效性。可以通过优化包装设计、改进产品结构等方式解决了跌落破裂的问题，提高了儿童座椅抗冲击性能。

The work aims to improve the protective performance of the package by optimizing the design of the overall package of the child safety seat, to avoid the appearance and functional damage caused by the seat in the process of logistics transportation, so as to save the production cost. The finite element models of seats and packages were established by finite element method and the simulation analysis was carried out under different working conditions. Physical test of the product was conducted to verify the validity of the model. Based on the drop simulation and test results, the optimal scheme was proposed from the aspects of package design and seat structure, and the optimal scheme was determined based on the optimized results. The falling simulation results were consistent with the experimental results, and there were many cases of seat back damage in different working conditions, so it was determined as the main research object. The proposed packaging optimization scheme had better protection performance and the stress was reduced under different falling conditions. The maximum stress of the structure in the side falling condition was reduced to 23.4 MPa, which was close to the yield value of the material. The optimized ratio was reduced by 11.0 % compared with the original packaging. The validity of the finite element model is verified by the agreement of simulation and experimental results. Optimizing the packaging design, improving the product structure and other measures can solve the problem of falling and breaking, and improve the anti-impact performance of the child seat.