초록 ▼

A lock cylinder is mounted to an outer operating device of a door lock. The lock cylinder includes a lock core and an actuating block fixed to the lock core. The actuating block includes first and second lugs operatively coupled with the outer operating device. A key can be inserted into the lock co

A lock cylinder is mounted to an outer operating device of a door lock. The lock cylinder includes a lock core and an actuating block fixed to the lock core. The actuating block includes first and second lugs operatively coupled with the outer operating device. A key can be inserted into the lock core to pivot the lock core between an initial position and a non-initial position. When the lock core is in the non-initial position, the first lug permits a latch of the outer operating device to be moved from a latching position to an unlatching position by operating the outer operating device. When the lock core is in the initial position, the second lug prevents the latch from being moved from the latching position to the unlatching position by operating the outer operating device.

대표청구항 ▼

1. A lock cylinder for a door lock comprising: a cylinder body including a lock core hole having a longitudinal axis;a lock core pivotably received in the lock core hole, with the lock core including a head and a tail, with the lock core further including a keyway defined in the head, with the tail

1. A lock cylinder for a door lock comprising: a cylinder body including a lock core hole having a longitudinal axis;a lock core pivotably received in the lock core hole, with the lock core including a head and a tail, with the lock core further including a keyway defined in the head, with the tail located outside of the cylinder body, with the lock core pivotable about the longitudinal axis of the lock core hole between an initial position and a non-initial position, and with the keyway adapted to receive a key;a setting unit received in at least one of the cylinder body and the lock core, with the setting unit controllable to move between an engagement position and a release position, and with the key adapted to be inserted into the keyway to move the setting unit from the engagement position to the release position; andan actuating block fixed to the tail of the lock core, with the actuating block including first and second lugs on an outer periphery thereof and spaced from each other in a circumferential direction about the longitudinal axis of the lock core hole, with the first and second lugs adapted to be operatively coupled with a door lock, with the door lock including an outer operational device and a latch device, and with one of the outer operational device and the latch device including a follower located between the first and second lugs,wherein when the lock core is in the initial position and when the setting unit is in the engagement position not receiving the key, the lock core is prevented from pivoting from the initial position to the non-initial position, and the lock core only permits insertion of the key into the keyway or removal of the key out of the keyway,wherein when the lock core is in the initial position and when the setting unit is in the release position receiving the key, the lock core is pivotable from the initial position to the non-initial position,wherein when the key received in the keyway is operated to pivot the lock core from the initial position to the non-initial position, removal of the key out of the keyway is not permitted,wherein when the lock core moves from the non-initial position to the initial position, the second lug of the actuating block is actuates the follower to move in a first direction to a first position to change an operative state of one of the outer operating device and the latch device of the door lock to thereby prevent a latch of the latch device from being moved from a latching position to an unlatching position by operating the outer operating device of the door lock, andwherein when the lock core moves from the initial position to the non-initial position, the first lug of the actuating block actuates the follower to move in a second direction opposite to the first direction to a second position to change the operative state of the one of the outer operating device and the latch device of the door lock to thereby permit the latch to be moved from the latching position to the unlatching position by operating the outer operating device. 2. The lock cylinder for a door lock as claimed in claim 1, with the cylinder body further including an upper tumbler pin hole in communication with the lock core hole, with the lock core further including a lower tumbler pin hole, with the setting unit including an upper tumbler pin received in the upper tumbler pin hole, with the setting unit further including a lower tumbler pin received in the lower tumbler pin hole, with the setting unit further including a spring biasing the upper tumbler pin against the lower tumbler pin, and with the key adapted to be inserted into the keyway to press against the lower tumbler pin to move the setting unit from the engagement position to the release position, wherein when the lock core is in the initial position and when the setting unit is in the engagement position not receiving the key, the lower tumbler pin hole is partially received in the keyway, the upper tumbler pin is located in the upper and lower tumbler pin holes, the lock core is prevented from pivoting from the initial position to the non-initial position, and the lock core only permits insertion of the key into the keyway or removal of the key out of the keyway, andwherein when the key received in the keyway is operated to pivot the lock core from the initial position to the non-initial position, the lower tumbler pin pivots together with the lock core to a position in which the lower tumbler pin is limited by an inner periphery of the lock core hole of the cylinder body and serrations of the key, preventing the key from moving along a longitudinal axis of the lower tumbler pin hole, and removal of the key out of the keyway is not permitted. 3. A door lock comprising: an outer operating device including a handle;a latch device including a latch operably connected to the handle, with the latch movable between a latching position and an unlatching position, with movement of the handle causing movement of the latch between the latching position and the unlatching position, with one of the latch device and the outer operating device including a follower, with the follower movable between a first position and a second position, wherein when the follower is in the first position, the latch is prevented from moving from the latching position to the unlatching position by operating the handle of the outer operating device, and wherein when the follower is in the second position, the latch is permitted to move from the latching position to the unlatching position by operating the handle of the outer operating device; anda lock cylinder including: a cylinder body including a lock core hole having a longitudinal axis;a lock core pivotably received in the lock core hole, with the lock core including a head and a tail, with the lock core further including a keyway defined in the head, with the tail located outside of the cylinder body, with the lock core pivotable about the longitudinal axis of the lock core hole between an initial position and a non-initial position, and with the keyway adapted to receive a key;a setting unit received in at least one of the cylinder body and the lock core, with the setting unit controllable to move between an engagement position and a release position, and with the key adapted to be inserted into the keyway to move the setting unit from the engagement position to the release position; andan actuating block fixed to the tail of the lock core, with the actuating block including first and second lugs on an outer periphery thereof and spaced from each other in a circumferential direction about the longitudinal axis of the lock core hole, and with the follower located between the first and second lugs,wherein when the lock core is in the initial position and when the setting unit is in the engagement position not receiving the key, the lock core is prevented from pivoting from the initial position to the non-initial position, and the lock core only permits insertion of the key into the keyway or removal of the key out of the keyway,wherein when the lock core is in the initial position and when the setting unit is in the release position receiving the key, the lock core is pivotable from the initial position to the non-initial position,wherein when the key received in the keyway is operated to pivot the lock core from the initial position to the non-initial position, removal of the key out of the keyway is not permitted,wherein when the lock core moves from the non-initial position to the initial position, the second lug of the actuating block is actuates the follower to move in a first direction to the first position to thereby prevent the latch of the latch device from being moved from the latching position to the unlatching position by operating the handle of the outer operating device, andwherein when the lock core moves from the initial position to the non-initial position, the first lug of the actuating block actuates the follower to move in a second direction opposite to the first direction to the second position to thereby permit the latch to be moved from the latching position to the unlatching position by operating the handle of the outer operating device. 4. The door lock as claimed in claim 3, with the cylinder body further including an upper tumbler pin hole in communication with the lock core hole, with the lock core further including a lower tumbler pin hole, with the setting unit including an upper tumbler pin received in the upper tumbler pin hole, with the setting unit further including a lower tumbler pin received in the lower tumbler pin hole, with the setting unit further including a spring biasing the upper tumbler pin against the lower tumbler pin, and with the key adapted to be inserted into the keyway to press against the lower tumbler pin to move the setting unit from the engagement position to the release position, wherein when the lock core is in the initial position and when the setting unit is in the engagement position not receiving the key, the lower tumbler pin hole is partially received in the keyway, the upper tumbler pin is located in the upper and lower tumbler pin holes, the lock core is prevented from pivoting from the initial position to the non-initial position, and the lock core only permits insertion of the key into the keyway or removal of the key out of the keyway, andwherein when the key received in the keyway is operated to pivot the lock core from the initial position to the non-initial position, the lower tumbler pin pivots together with the lock core to a position in which the lower tumbler pin is limited by an inner periphery of the lock core hole of the cylinder body and serrations of the key, preventing the key from moving along a longitudinal axis of the lower tumbler pin hole, and removal of the key out of the keyway is not permitted.