| 摘要 |
PURPOSE: A fire door is provided to reduce property damage and casualties by preventing smoke and flame from expanding and to facilitate to escape in an emergency. CONSTITUTION: A fire door(100) comprises an emergency exit(101), an escape door(102), a locking device(104), and a helper. The emergency exit is formed with the size in which a person can escape from by bending or lying flat. The escape door is combined with the emergency exit by a hinge(103) to be able to open and close. The locking device is equipped in the escape door and continuously maintains a usual closed state. The helper is equipped in the emergency exit and escape door; blocks smoke and flame getting into an escaping area in an escaping process; and prevents the damage of an escaper due to the smoke and flame. |
