目的 满足行动不便的老年用户群体复杂的出行需求，提高电动代步车类工具使用过程中的舒适度。方法 在传统老年电动代步车的基础上附加辅助站立结构，创新设计出一款坐、立两用的新型电动代步车，并借助Jack仿真软件，对老年用户坐姿驾驶和辅助站立支撑状态下的舒适度、可达域、可视域，以及上车过程中L4/L5下背部的受力情况进行分析，以验证关键人机交互结构、尺寸设计的合理性及舒适性。结论 通过验证和调整，对电动代步车的初期设计方案进行改进，优化后的方案为老年电动代步工具的设计提供了参考，可以为满足老年用户复杂的出行需求、提高电动代步车类工具使用过程中的舒适度和安全性提供帮助。

The work aims to meet the complex travel needs of elderly users with limited mobility and improve the comfort of electric scooter tools during use. On the basis of traditional electric scooters for the elderly, an auxiliary standing structure was added to innovate in the design of a new type of electric scooter that could be used for both sitting and standing. With the help of Jack simulation software, the comfort, accessibility, and visibility of elderly users in sitting and auxiliary standing support states, as well as the stress on the lower back of L4/L5 during the boarding process, were analyzed to verify the rationality and comfort of key human-machine interaction structures and size designs. Through verification and adjustment, the initial design scheme of electric scooters has been improved. The optimized scheme provides a reference for the design of electric scooters for the elderly, which can meet the complex travel needs of elderly users and improve the comfort and safety of electric scooter tools during use.