Abstract: The vibration performance defects of the suspension system of the automatic top load washing machine have been summarized in this paper after the vibration principle of the suspension system had been analyzed. According to the washing machine vibration performance and the quasi-zero-stiffness vibration isolation theory is used. An new suspension system with high-static and low-dynamic stiffness of the top load washing machine would be design. The feasibility of the new suspension system is verified by the numerical simulation and experiment. The vibration performance of the washing machine is greatly improved by adopting the quasi-zero stiffness suspension system.

Key words: The suspension system, The washing machine, Quasi-zero stiffness, Vibration isolation