DOOR WITH AN AUTO-CLOSING FUNCTION TO FACILITATE MAINTENANCE BY SETTING THE RESTORING FORCE OF A SPRING FOLLOWING THE SIZE AND THE WEIGHT OF A DOOR PROPERLY

摘要

PURPOSE: A door with an auto-closing function is provided to maintain the closing force of a door evenly by changing the elastic returning force of a torsion spring according to the size and the weight of the door.;CONSTITUTION: A door with an auto-closing function comprises a torsion spring(10) and a spring holder(20). The both ends of the torsion spring are connected to a door body(99) and a door frame(98) respectively. The torsion spring is elastically returned in a direction of closing while the door body opened and comprises at least one winding portion. The spring holder is formed on the top portion of the door frame and arranged on the same axis of a hinge shaft(97). The spring holder accommodates the winding portion and the fixing portion of the spring holder fixes the torsion spring.;COPYRIGHT KIPO 2013