目的 为了研究快递箱提手即插销结构与其所能承受的平均质量之间的关系，从而便于设计和选用提手尺寸。方法 针对已设计的一种快递箱插销，通过力学知识、人机工程学知识等分析该插销结构性能的影响因素，并制定插销结构的强度测试方案。结果 根据测试数据处理分析，提手宽度a可由MATLAB生成的公式计算;提手宽度a/锁翼宽度b在0.5~0.8时，可承受的质量为15.33~17.40 kg;锁翼长度c在20~60 mm时，可承受的质量为3.76~18.26 kg;板边距d在6~22 mm时，可承受的质量为3.05~5.21 kg。结论 以实验数据及结果为参考拟定了插销尺寸设计步骤，便于行业相关从业者参考。

The work aims to study the relationship between the express box handle, namely the latch structure and the average weight it can bear, so as to facilitate the design and selection of handle size. Through the knowledge of mechanics and ergonomics, the factors affecting the structural performance of the latch structure designed in the express box were analyzed and the strength test schemes for such a latch structure were formulated. According to the test data processing and analysis results, the handle width a could be calculated by the formula generated by MATLAB. When the handle width a/lock wing width b was 0.5-0.8, the bearable weight was 15.33-17.40 kg. When the lock wing length was 20-60 mm, the bearable weight is 3.76-18.26 kg. When the plate margin d was 6-22 mm, the bearable weight was 3.05-5.21 kg. Based on the test data and results, the design steps of latch size are drawn up, which is convenient for the reference of relevant practitioners in the industry.