The utility model relates to a melting crack preventing mechanism of the bottom of a wave conducting cup of a negative ion essential oil fragrance machine.In particular, a negative ion essential oil fragrance machine is arranged in the oscillator chamber at the bottom of the vibration wave conducting cup.Insert a metal ring sleeve.Then press it into the oscillation unit.So,It can prevent the high temperature and high-speed vibration frequency caused by the long-term action of the vibration unit from generating hot melt erosion crack phenomenon on the bottom of the vibration wave conducting cup.It can improve the conduction efficiency.Prevent leakage,Extend the life of the body components.Improve the stability of body quality.Reduce the defect rate and the burden of after-sales maintenance labor cost.Achieve the goal of saving time and effort.一種負離子精油飄香機其振波傳導杯底之融裂防止機構，特別是指一種負離子精油飄香機於其振波傳導杯底之振盪器容室中，嵌入一金屬環套，再壓設入振盪單元，如此，可防止振盪單元因長時間作用所產生之高溫及高速振頻對振波傳導杯底產生熱融蝕碎裂痕現象，可提升傳導效率，防止滲漏，延長機體元件壽命，提升機體品質穩定性，減低不良率及售後維修工時支出負擔，達到省時省力目的者。
