Heat and sound transmission attenuated framing structure, particularly door or window framing

A heat and sound transmission attenuated framing structure, optionally a door or window framing structure, for installation in a building having

• a stationary frame (1, 1') and a movable window or door frame (2, 2a, 2b);
• two metal rails (10, 12;
• 52, 54), one (10, 52) of said rails being an inside rail located at an inner side (I) of the building and the other (12, 54) being an outside rail, located at an outer side (O) of the building;
• and
• a heat and sound insulating structure located between said inside and outside rails,
• wherein the heat and sound insulating structure comprises
• a thin-walled chambered strip (14) of hard plastic material having first and second thin-walled elongated strip portions and thin-walled cross ribs (21, 22, 23) between said strip portions, thereby defining at least three, and optionally four chambers (17-20), in which at least two of said chambers are of different size, said chambers being serially located in the direction of thermal gradient between the outside (O) and the inside (I) of the building,
• said chambers (17-20) in said strip (14) being located, with respect to a dimension transverse to the longitudinal extent of the outer or inner one of said rails, in staggered or Z-shaped configuration;
• wherein the metal rails (10, 12;
• 52, 54) and the end portions of said strip (14) are formed with interlocking, dovetail and respectively staggered connection arrangements, provided, respectively, on said rails and the end portions of said chambered strip (14) to form a connection means securely connecting opposite lateral portions of the chambered rail (14) with said inside and outside rails (10, 12;
• 52, 54) respectively,
• wherein at least one of said strip portions of the chambered strip is formed with an essentially flat, parallel surface (61, 62) facing a portion (4) of the building;
• wherein support means (7) are provided between at least one (61) of said essentially flat surfaces (61, 62) and said portion (4) of the building;
• wherein at least one of said strip portions of said chambered strip (14), opposite an outermost chamber (17), is formed with two oppositely directed ribs (24) defining a re-entrant dovetailed opening;
• a rubber-elastic strip (26) is provided, fitted in said re-entrant dovetailed opening and in engagement with a portion of the movable window or door frame (2, 2a, 2b);
• and
• wherein said sealing strip (26) is formed with at least one sealing extension or sealing lip (27, 28) engaging against the movable window or door frame (2, 2a, 2b).