| 摘要 |
The present invention, which is provided to solve the problem of a background technique, provides a door lock capable of unlocking an inner locking tool when a user intends to open a door while the inner locking tool is being operated. The present invention, which is installed on the inner part of a door and includes a casing for blocking parts installed therein from outside, a motor or a dead bolt for locking the door by moving the dead bolt backward inside or forward out of the casing by the operation of the user, and an inner locking tool for preventing the retreat of the dead bolt even if a password is input from outside and unlocking is authenticated when the door is locked by moving forward the dead bolt out of the casing, comprises a cam member for converting rotation into the translation of the dead bolt by rotating in gear with the motor or the inner switch operated by the user; a locking groove, which is formed on the dead bolt to prevent the movement of the dead bolt when the inner locking tool slides in a locking direction, and a locking protrusion which is arranged in the inner locking tool and is inserted into the locking groove; a first interlocking member in the form of a protrusion placed on one side of the cam member; and a second interlocking member combined with the inner locking tool to be able to move the inner locking tool in an unlocking direction in gear with the first interlocking member when the cam member rotates in a direction of retreating the dead bolt. |
