| 摘要 |
The present invention relates to a lock box of a door locking device and a manufacturing method thereof which facilitates the joining of a base plate for joining a door and a case in which a locking unit is received. The base plate and the case are joined by a joining hole or a joining groove, which are formed at the positions corresponding to a joining piece of the base plate and the case, and a joining protrusion corresponding to the same. A joining force of the lock box is reinforced by a locking groove and a locking piece bent toward the locking groove, which are formed on the positions corresponding to the top. |
