Patent ID: 6601419
Filing Date: 2003-08-05
Classification: E05B,Y10T

Abstract:
A lock core device of an anti-theft tumbler pin type comprising: a tubular housing (5) defining a lock core hole (51) and a plurality of first tumbler pin holes (52) each communicating with the lock core hole (51), at least one side tumbler pin hole (54) defined in the housing (5) and communicating with the lock core hole (51), the first tumbler pin holes (52) and the at least one side tumbler pin hole (54) being spaced from each other in a radiating manner about the lock core hole (51), a transverse hole (55) defined in the housing (5) and communicating with the at least one side tumbler pin hole (54);a lock core (6) rotatably mounted in the housing (5) and defining a key slot (62) and a plurality of second tumbler pin holes (61) each communicating with the key slot (62), the lock core (6) including a drive member (63) and being restricted by a positioning member (53) to rotate relative to the housing (5) through a pre-determined angle, and the second tumbler pin holes (61) of the lock core (6) being moved to align with the first tumbler pin holes (52) of the housing (5) and being moved to align with the at least one side tumbler pin hole (54) of the housing (5) when the lock core (6) is rotated; a plurality of tumbler pin sets (7) each mounted in the first tumbler pin holes (52) of the housing (5) and the second tumbler pin holes (61) of the lock core (6), each of the tumbler pin sets (7) including a top tumbler pin (72), a bottom tumbler pin (71), and a first elastic member (73), wherein the top tumbler pin (72) and the bottom tumbler pin (71) are movable in the second tumbler pin holes (61) of the lock core (6); at least one block pin (8) slidably mounted in the at least one side tumbler pin hole (54) of the housing (5), wherein the at least one block pin (8) is rested on a peripheral wall of the lock core (6) or is inserted into the second tumbler pin hole (61) of the lock core (6); and a control tumbler pin set (9) mounted in the transverse hole (55) of the housing (5) and including a transverse tumbler pin (91) and a second elastic member (92), the transverse tumbler pin (91) of the control tumbler pin set (9) having a front end rested on the at least one block pin (8), wherein when the at least one block pin (8) is inserted into the second tumbler pin hole (61) of the lock core (6), the transverse tumbler pin (91) of the control tumbler pin set (9) is rested on a top end of the at least one block pin (8); wherein each of the transverse tumbler pin (91) and the at least one block pin (8) has a cone-shaped abutting end abutting each other.