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    • 3. 发明公开
    • FOAM AND MESH CLOSURE MECHANISM FOR A FIRE AND SMOKE SEAL OF A CABLE LEAD-THROUGH
    • EP4318834A1
    • 2024-02-07
    • EP22188422.4
    • 2022-08-03
    • Hilti Aktiengesellschaft
    • Voss, Brendan
    • H02G3/04A62C2/06A62C3/16F16L5/04F16L5/10H02G3/22
    • The invention relates to an automated closing mechanism (1) for sealing a conduit lead-through in a wall, comprising:
      - a foam insert (2) configured and shaped to be inserted into the lead-through, thereby closing and sealing its opening cross-section, the insert (2) being formed by at least two insert parts (2a, 2b) which are at least partly separable from each other and abut against each other along an inner separation surface (3) extending within the insert (2) in its initial closed state, so as to tightly enclose conduits (7) fed between them when the insert (2) is inserted in the lead-through;
      - a mesh inlay (4) integrated within or permanently attached to at least one of said insert parts (2a, 2b) and extending along said inner separation surface (3); and
      - a mechanical opening device (8) connected to said mesh inlay (4) and configured to transfer an opening force (F) to the mesh inlay (4) to deform it, thereby causing a compression of the respective insert part(s) (2a, 2b), such that a separation opening (6) is created between said insert parts (2a, 2b) allowing to remove or insert conduits (7);
      - the foam insert (2) and the mesh inlay (4) being reversibly deformable such that said separation opening (6) automatically closes by inherent material recovery properties of the foam causing the insert (2) to return to its initial closed state when the force (F) is removed.