| 摘要 |
FIELD: construction. ^ SUBSTANCE: door block comprises a door leaf, a metal door frame limiting a door opening, and step-shaped ledges fixed on them with working surfaces and rubber sealing elements. Working surfaces of the door leaf are arranged oppositely to working surfaces of the ledge. A locking device fixes the door leaf in the closed position and represents a lock joint of a ""-shaped ledge on the door leaf. The ""-shaped ledge is an extension of the step-shaped ledge and ledge on the door frame, representing a step-shaped ledge with a lock rib protruding on it. Along the entire width of the ""-shaped ledge on the door leaf there is a sound insulation sealant glued, representing a synthetic fleecy structure on the basis of an impregnated polymer. ^ EFFECT: higher tightness, thermal insulation between inner and outer space with simplicity of design implementation. ^ 4 dwg |
