Patent ID: 7320384

Claim:
A gearbox for a gardening machine, said gardening machine having a cutter, said gearbox comprising: a housing having therein a receiving chamber; a transmission gear wheel mounted in said receiving chamber for rotation driven by an external driving force; an eccentric shaft assembly mounted in said receiving chamber and coupled to said transmission gear wheel for rotation together with said transmission gear wheel and further driving action of said cutter of said gardening machine; and a lubricating blade mounted at a bottom side of said receiving chamber and tightly connected with said eccentric shaft assembly for rotation together with said eccentric shaft assembly, said lubricating blade having a plurality of arched grooves for delivering lubricating oil located at the bottom side of said receiving chamber to said transmission gear wheel and said eccentric shaft assembly by the rotation; wherein said housing further comprises a bottom cover shell, a top cover shell connected with said bottom cover shell, and a transmission chamber in communication with said receiving chamber and outside for receiving a driving source for rotation of said transmission gear wheel, said top cover shell having a filling hole in communication with said receiving chamber for filling lubricating oil therein.