Abstract: A door safety locking apparatus door safety locking apparatus including: a body mounted inside a housing; a locker mounted inside a door opening and closing the interior of the housing in such a manner as to be separably fitted to the body; a dog coupled to the interior of the body by means of a shaft and having a locking protrusion formed on the upper end thereof to lock a coupling hole pierced on the locker thereonto; a tilting rod coupled at the front end thereof to the dog by means of a pin and coupled at the end portion thereof to the bottom surface of the interior of the body by means of a hinge, to guide the dog being rotated around the shaft in accordance with the pulling operation of the locker; and a spring fitted around the outer periphery of the tilting rod to elastically support the tilting rod guiding the rotating operation of the dog.

Abstract: A door hinge includes: a fixed board fixed to a door frame; a cover housing fitted to the upper end of the fixed board; an operation frame fixed to a door; an operation cam member rotatably disposed inside the cover housing and axially coupled to the operation frame fixed to the door by a shaft, so that the operation cam member rotates around the shaft according to the rotating operation of the operation frame; a link coupled eccentrically to one side of the operation cam member by a second pin and linearly moving according to the rotating operation of the operation cam member; a slider coupled to the link by a first pin and moving horizontally in forward and backward directions according to the linear movements of the link in the state disposed inside the cover housing; and a spring fitted to the outer circumferential surface of the slider to elastically support the closing operation of the door.

Abstract: A door safety locking apparatus door safety locking apparatus including: a body mounted inside a housing; a locker mounted inside a door opening and closing the interior of the housing in such a manner as to be separably fitted to the body; a dog coupled to the interior of the body by means of a shaft and having a locking protrusion formed on the upper end thereof to lock a coupling hole pierced on the locker thereonto; a tilting rod coupled at the front end thereof to the dog by means of a pin and coupled at the end portion thereof to the bottom surface of the interior of the body by means of a hinge, to guide the dog being rotated around the shaft in accordance with the pulling operation of the locker; and a spring fitted around the outer periphery of the tilting rod to elastically support the tilting rod guiding the rotating operation of the dog.

Abstract: A door hinge includes: a fixed board fixed to a door frame; a cover housing fitted to the upper end of the fixed board; an operation frame fixed to a door; an operation cam member rotatably disposed inside the cover housing and axially coupled to the operation frame fixed to the door by a shaft, so that the operation cam member rotates around the shaft according to the rotating operation of the operation frame; a link coupled eccentrically to one side of the operation cam member by a second pin and linearly moving according to the rotating operation of the operation cam member; a slider coupled to the link by a first pin and moving horizontally in forward and backward directions according to the linear movements of the link in the state disposed inside the cover housing; and a spring fitted to the outer circumferential surface of the slider to elastically support the closing operation of the door.

Abstract: A door hinge includes a fixing member (10) fixed to a door frame (100), an actuation frame (20) fixed to a door (200) to enable the door to be opened and closed, a slider (22) coupled between the actuation frame and the fixing member, a rotatable moving guide plate (30) rotatably moved around the hinge (34) when the door is opened, and configured to forwardly push the slider, a guide roller (18) to resiliently support the rotatable movement of the rotatable moving guide plate, and a connection frame (60) having one end connected to a slot (11) of the fixing member by a pin (62) and the other end connected to the actuation frame by the hinge (24) and forwardly pushed out when the door is opened along with the slider.

Abstract: A door hinge includes a fixing member (10) fixed to a door frame (100), an actuation frame (20) fixed to a door (200) to enable the door to be opened and closed, a slider (22) coupled between the actuation frame and the fixing member, a rotatable moving guide plate (30) rotatably moved around the hinge (34) when the door is opened, and configured to forwardly push the slider, a guide roller (18) to resiliently support the rotatable movement of the rotatable moving guide plate, and a connection frame (60) having one end connected to a slot (11) of the fixing member by a pin (62) and the other end connected to the actuation frame by the hinge (24) and forwardly pushed out when the door is opened along with the slider.

Abstract: A door lock device includes a fixing rack, an operation rack, a solenoid device, an engaging member, and a locking pin. The fixing rack is installed in a receptacle and has a hinge shaft. The operation rack is coupled with the hinge shaft. The solenoid device is installed in the receptacle and has a rod. The engaging member is assembled to the rod and ascends or descends in response to the operation of the solenoid device. The locking pin is installed in the operation rack and performs a locking or unlocking function to the door.

Abstract: Provided is a door hinge. The door hinge includes a fixing member, an activating member, a guide pin, and a guide frame. The fixing member is installed at a door frame. The activating member is installed at a door, and connects with the fixing member by a hinge, and opens and closes the door. The guide pin is fitted into guide holes provided at both sides of the activating member, and elastically moves up/down along the guide hole by a tension force of a spring installed inside the activating member. A guide frame is combined to the guide pin, and connects at its lower end with the fixing member by a pin, and rotates about the pin depending on an operation of the activating member. The guide hole is round (R) shaped at its center, and has a curved shape in entirety.

Abstract: Provided is a door lock device. The device includes a fixing rack, an operation rack, a solenoid device, an engaged fragment, and a locking pin. The fixing rack is installed in a receptacle and has a hinge shaft. The operation rack is coupled with the hinge shaft. The solenoid device is installed in the receptacle and has a rod. The engaged fragment is assembled to the rod and ascends or descends. The locking pin is installed in the operation rack and performs a locking or unlocking function.