| 摘要 |
<p>The present invention relates to a door-lock device. Particularly, the present invention relates to a technique for simplifying the connection structure of a door case and the self-structure of a locking driving part by allowing a door lever to finally control the operation of a locking piece. And, the present invention relates to a technique for extending the range of using the door lever by allowing the door lever to perform the operation control function of the locking piece. Moreover, the present invention relates to a technique for preventing damage to a door level and an internal structure connected to the door laver even though the door lever is compulsorily rotated when a locking and releasing signal is applied. And, the present invention relates to a technique for preventing damage due to ice formation in winter due to the position of a structure for operating the locking piece in the external case of the door. Moreover, the present invention relates to a technique for improving use convenience by freely selecting the installation direction of the door lever according to the installation environment or physical condition of a user.</p> |
