Abstract: Because the lower basket is as the frequently used component for dishwasher users, it is necessary to enhance the users' operating experience when pushing and pulling the lower basket in dishwashers. Based on the analysis of the current single-sided force situation, a wheel frame roller structure with the double-sided force situation is proposed. By comparing the difference of force analysis between the conventional roller structure and the wheel frame roller structure, and combining the simulation analysis results of basket components with two different roller structures, the effects of the two structures to control deformation were obtained, and the improvement to the theoretical service life of baskets with using the wheel frame roller structure can be preliminarily evaluated. Furthermore, the multidimensional evaluations were proceeded for the moving smoothness of rollers and the push-pull smoothness of lower baskets, especially considering the different load states in the baskets. Through the push-pull test results of two roller structures and the users experience test, the improvement effect by using the wheel frame roller structure is verified. At the same time, the reliability of the wheel frame roller structure was also verified through the push-pull test. In summary, there provides theoretical reference and practical feasible methods for optimizing the push-pull experience of dishwasher baskets.

Key words: Dishwasher, Lower basket assembly, Roller, Wheel frame, Push-pull smoothness