Abstract: In order to study how to realize the automatic locking of the tailgate of the automobile, the paper first analyzes the influencing factors of realizing the automatic locking of the tailgate, then establishes a mathematical calculation model for each factor, calculates the energy generated or consumed by each influencing factor in the process of closing the tailgate, and finally according to the law of energy conservation, the energy required to obtain the automatic locking of the tailgate is calculated, and according to the calculation structure, it is judged whether the tailgate can be automatically locked. Through the above method, various parameters can be adjusted in the preliminary design to satisfy the automatic lock of the tailgate of the automobile.

Key words: Tailgate of the automobile; Automatic locking; Air spring; Energy conservation

摘要： 为研究汽车尾门如何实现自动落锁，文章首先分析实现尾门自动落锁的影响因素，然 后对各个因素建立数学计算模型，计算各影响因素在尾门关闭过程中产生或消耗的能量，最 后根据能量守恒定律，计算出获得尾门自动落锁所需要的能量，并根据计算结构判断尾门是 否可以实现自动落锁。通过上述方法可以实现在前期设计时通过调整各种参数来满足汽车尾 门自动落锁。

关键词: 汽车尾门；自动落锁；气弹簧；能量守恒