| 摘要 |
A fire door is provided to have excellent functions of insulation, sound insulation, protection against wind, smoke interception and crime prevention by forming a narrow door wing to be extended along the front circumferential surface of a door, and forming a wing stopper housing the door wing on the front of a doorframe. A fire door includes a door wing composed of a wing side portion and a wing rear portion and extended along the circumferential surface of a door front portion of a door, a door side portion and a door rear portion formed on the rear of the wing rear portion, a wing side contact portion and a wing stop portion formed on the front of upper, lower and lateral doorframes correspondingly to the wing side portion and the wing rear portion, and a door side contact portion and a door stop portion formed continuous with the wing stop portion. |
