Patent ID: 6837080

Claim:
A combination lock comprising a core unit, a reset mechanism, and a locking mechanism, wherein said reset mechanism comprises a reset guide rod, a sliding plate, a return spring, a holder frame, a stop rod, and a reset member, said reset guide rod being fixedly connected between two end flanges of a push board of said core unit, said sliding plate, said return spring and said holder frame being respectively mounted on said reset guide rod, said sliding plate having a rectangular opening and a rack at a bottom side thereof, said return spring being sleeved onto said reset guide rod and stopped between one end of said holder frame and a locating ring at one end of said reset guide rod, said stop rod having a bottom stop end curved at an acute angle and engaged with said rack of said sliding plate and a top end connected to a projecting rod at said reset member, a middle part pivotally connected to said holder frame by a pivot and a spring member, said reset member being an angled member having a longitudinal sliding slot longitudinally disposed on the middle and coupled to a shell of said core unit by a rivet.