SOUND-REFLECTING SANDWICH PANEL Russian patent published in 2016 - IPC E04C2/00 

FIELD: construction.

SUBSTANCE: invention relates to industrial and civil construction, particularly, structures of sandwich-like panels, and is used for making external noise and sound-protecting structures (road guard), heat insulation and not bearing structures of buildings and structures (walls, panels, inner and outer partition), roof coatings. Sound-reflecting panel comprises outer, elongated in cross section, housing with cavity, inside which there is a filler. External housing is made by method of pultrusion from glass and contains side walls and upper and lower locking elements. Each lock element of panel is inclined at an angle of 45° to the side walls of the body edge, on which there are at least one longitudinal slot located along the length of the panel, and at least one long projection, which is located along the length of the panel. Size, shape and location of the slot and ledge in the lower locking element corresponds to the size, shape and arrangement of projection and the slot of the upper locking element, at the same time the slot and ledge of every locking element is lagging behind the edges of the inclined facets of the housing, besides, the lower lock element comprises additional grabbing projection, which is a continuation of the side wall of the housing. Upper locking element comprises a compound angle cut of the angled edge of the upper locking element and the side wall of the housing.

EFFECT: technical effect consists in increasing of prolonging the fault-free operation, simplified connection between panels, improvement of sound reflecting properties and increasing of structural strength.

8 cl, 2 dwg