| 摘要 |
A door locking device is provided to facilitate locking and releasing processes of a door by driving a manipulation knob according to a sliding scheme. A door locking device includes a main body(2), a manipulation member(4), upper and lower dead bolts(5,6), a cover plate(7), and a manipulation knob(9). The manipulation member is coupled with a coupling hinge of the main body and folded and unfolded with respect to the coupling hinge. The upper and lower dead bolts are hinge-coupled with both ends of the manipulation member and moved in a vertical direction. The dead bolt locks or unlocks the door. The cover plate is coupled with an upper portion of the main body. A guide rail portion and a long hole are formed on the cover plate, such that the manipulation knob is slid thereon. The manipulation knob is coupled with the manipulation member through a coupling bolt and drives the upper and lower dead bolts and the manipulation member. The coupling bolt penetrates the long hole of the cover plate.
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