Patent ID: 8393189

Claim:
A tubular lock comprising: a casing having a keyhole formed axially through the casing; at least one outer pinhole formed transversely through and formed separately on the casing; and an annular groove formed in an outside wall of the casing and communicating with each one of the at least one outer pinhole; a key pin seat mounted securely in the casing and having at least one key pin recess formed axially in the key pin seat; a driving pin seat mounted rotatably through the casing and having at least one driving pinhole formed axially through the driving pin seat; at least one positioning assembly mounted through a corresponding driving pinhole of the driving pin seat, mounted in a corresponding key pin recess of the key pin seat, and having a driving pin, a key pin and a resilient element; a side pin seat mounted rotatably in the casing, being a loop and having at least one inner pinhole formed transversely through and formed separately on the side pin seat, and having at least one stepped sidewall; at least one side positioning assembly mounted through a corresponding outer pinhole of the casing and a corresponding inner pinhole of the side pin seat, and having an inner pin mounted through the corresponding inner pinhole, and having a flange formed annularly around the inner pin and abutting the stepped sidewall of the corresponding inner pinhole; an outer pin mounted through the corresponding inner pinhole and the corresponding outer pinhole, and abutting against the inner pin; and a resilient element mounted through the corresponding outer pinhole, and abutting against the outer pin; and a fastening assembly being a C-clip, mounted around and engaging the annular groove of the casing and abutting the resilient element of each one of the at least one side positioning assembly.