A study on the functional design and comfort of knee pads for delivery workers.

In this study, four types of functional knee pads with structure partitions were designed for delivery workers based on leg movement patterns during delivery. By selecting three characteristic points of the knee, experiments were conducted with the subjects to objectively analyze the effects of the knee pads with different fabrics on thermal and pressure comfort. The results showed that the structural partition of the knee pads with different fabrics had a significant effect on temperature; sample 3 had the highest temperature at the end of the experiment, which increased by 0.69 °C. At the same time, in the pressure comfort experiment, at the same test point the pressure on the knee at three bending angles gradually increases with the bending angle. The zonal structural design of knee pads can protect delivery workers' knee joints more effectively, which holds significant value for the design of functional knee pads.