| 摘要 |
The present invention relates to a door stopper for a fire prevention door which supports to maintain a closed state as installed on a door frame and a fire prevention door which is installed in the door frame to be opened and closed, and comprises: a main body of which an upper surface is closed, a penetrating hole is formed at the center, and a lower surface is open; an elevating body equipped with a head part which is protruded and formed to have a curved surface; a spring having an elastic supporting power in the direction where the head part is protruded; a control screw which displaces elasticity according to an expanding and contracting distance of the spring; and a stopper groove part where the head part is inserted and locked. According to the present invention, the door stopper can be economically manufactured and distributed due to simple structure and easy installation, and has an advantage of being installed regardless of sizes and shapes of the fire prevention door. |
