FIELD: construction.
SUBSTANCE: door leaf comprises a metal frame, a metal sheet (2) fixed on it as convex to the side away from the door, and a central sheet fixed on the frame from its internal side. The mechanism of wedge driving is fixed on the central sheet between it and the external protective sheet (2). On the door frame (21) at its one side there are side supports (14), against which side ends of the convex sheet (2) rest, and at the other side to the door frame (21) there are other side supports (15) fixed, with which stop wedges (11) interact. Under action of an impact wave, load from ends of the protective sheet (37) is sent to supports (14) of the door frame (21), which considerably unloads elements of door leaf design and reduces possibility of their bends and warps. Resistance of the door to damage and reliability of the wedge driving mechanism increase.
EFFECT: higher reliability of a door.
2 cl, 9 dwg
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