Patent ID: 7870772

Claim:
An exterior lever lock device comprising a lever assembly having an exterior cap having a mounting hole formed through the exterior cap; an exterior lever mounted on an outer surface of the exterior cap and having a mounting tube protruding transversely from a mounting end of the exterior lever and being concentric with the mounting hole of the exterior cap; and a lock cylinder mounted securely in the mounting tube of the exterior lever; a driving assembly mounted between the mounting hole of the exterior cap and the mounting tube of the exterior lever and having an outer sleeve mounted through the mounting hole of the exterior cap, protruding into the mounting tube of the exterior lever and mounted securely around the lock cylinder; a clutch assembly mounted in the outer sleeve and having a core bracket having a connecting end connected to the lock cylinder; a driving tube mounted around the core bracket and having an open end; a closed end; and a guiding groove formed through a sidewall of the driving tube and having an engaging portion corresponding to the open end of the driving tube; and a disengaging portion corresponding to the closed end of the driving tube; and a guiding rod mounted through the guiding groove of the driving tube and attached securely to the core bracket; and a driven assembly mounted in the outer sleeve, connected to the clutch assembly and having an inner sleeve having a mounting end corresponding to the clutch assembly; a resilient element mounted in the inner sleeve; and a locking panel fastened to the closed end of the driving tube, mounted on the mounting end of the inner sleeve, abutting the resilient element and selectively engaging the inner sleeve.