Patent ID: 7958757

Claim:
A cam lock for a cabinet comprising: an outer shell comprising a hollow rear casing having a front opening; and a cover mounted rotatably around the rear casing and having a rear opening communicating with the front opening of the rear casing; an inner shell mounted in the outer shell and is attached securely to the cover of the outer shell; a main core assembly mounted in the inner shell and comprising two combination cores mounted in the inner shell and has multiple identification notches; a locking actuator mounted in the inner shell, protruding into the rear casing of the outer shell and abutting the combination cores, wherein when the combination cores are unlocked, the locking actuator is free to move into the inner shell to allow the cover and the inner shell rotating relative to the rear casing; and a code-changing assembly mounted in the inner and outer shells and abutting the combination cores; a secondary core assembly mounted through the outer and inner shells and comprising a core rod mounted through the cover and protruding into the inner shell; and a lock core connected to the core rod to selectively keep the core rod from rotating, wherein the core rod is rotatable relative to the inner and outer shells when the lock core is unlocked, and the core rod is bound with the inner shell when the lock core is locked; an identification assembly mounted in the inner shell and comprising a seat mounted through the inner shell and having a central body having a central hole formed through the central body; and multiple positioning detents formed in a rear surface of the central body, and each positioning detent having two inclined ends; and two extensions formed on two ends of the central body and respectively corresponding to the combination cores, each extension having multiple identification recesses formed therein, wherein when the combination cores are unlocked, each identification recess aligns with a corresponding identification notch and having a rear end; a first identification spring mounted around the central body and presses against the inner shell; multiple detecting pins mounted respectively in the identification recesses, each detecting pin has an annular shoulder selectively abutting a front wall of a corresponding identification recess; multiple second identification springs mounted respectively in the identification recesses; multiple plugs respectively sealing the rear ends of the identification recesses; and an identification sleeve connected to the rear surface of the central body of the seat, mounted through the rear casing, connected securely to the core rod and having multiple positioning protrusions formed on the front end thereof, and each positioning protrusion having two inclined ends and selectively engaging with the positioning detents of a central part of the seat; and a tongue assembly connected to the rear casing and comprising a tongue mounted securely around the identification sleeve.