Forced smoke and air sealing shut-off device for sliding doors with hinged sealing flap

Claims

Assuming that the existing knowledge is known, the innovation relates solely to the special design of the smoke and air sealing shut-off device. Fig. ↑ shows the view of the door from the outside when the door is closed, whereas Fig. 2 shows the sliding door in section in the closed state with the air-sealing locking device at its upper and lower edges. Fig. 3 shows the locking device at the upper edge of the door in an enlarged section view. Fig. 4 shows the closed door with fixed frame and roller arrangement in the view from the inside. Fig. 5 shows the closed door with frame in section. The forced smoke and air sealing device for sliding doors consists of hinged sealing flaps "1 and a", which are attached to the upper and lower edges of the door. Beveled angle irons b1, c1 and b2, c2 are attached to both ends of the sealing flaps. These angle irons run onto guide rollers e\ f1 and e2, f- of different lengths, respectively, which are mounted inside the sides g1, g2 of the door frame. This presses the hinged sealing flaps, which are fitted with sealing material k3, &4, against the fixed door frame, thus sealing against smoke and air. The flat irons i1, i2, attached to the long sides of the door, are also fitted with sealing material k1, k2. When the door closes, they press against the fixed door frame g"1, g2, thus sealing against smoke and air (see especially Fig. 5). The process is as follows: With the door open, the hinged sealing flap 1 rests on the rollers 1, as shown in the drawing (Fig. 3) by the dotted lines. When the door is closed, the hinged flap a1, which rests on the roller e1, runs through the recess h1 of the door frame side g·1 and remains in this position until the chamfer of the angle b1 meets the roller e1. As the door continues to move, the chamfered angle b1 presses the hinged sealing flap a1 and the sealing material against the door frame side gs, thus sealing this side. During this movement, the other chamfered angle c1 runs freely past the first roller 1 and only meets the angle 1 (the longer roller / 1) shortly before the door closes. This part of the hinged sealing flap a1 is then also pressed against the door frame gs by the chamfer of the angle c1, creating an airtight seal.The rollers and angle irons are positioned so that the seal is formed simultaneously on both sides. At the same time that the sealing flap al is in a sealing position against the upper door side g·3, the door is closed, and the protruding part of the flat iron i1 (Fig. 3 or 5) rests over the recesses of the fixed door frame side g1, which is sealed airtight by means of the sealing material. During this process, the other flat iron iii2, with its recess, passes over the rollers i1, fl or e2, / 2 and rests against the fixed door frame side g2 (Fig. 1 or 5), which is sealed airtight by means of the sealing material. The locking device works in the same way in the lower part of the door, but in reverse. To save space, the locking device can also be positioned so that the rollers are of the same length. In this case, the beveled angle iron c1, c2 is held lower so that it can slide freely over the front rollers 1, e2. Patent claim: A necessarily smoke- and air-tight sealing device for sliding doors with a hingedly arranged sealing flap, characterized in that the sealing flaps (κ1, a2) hingedly arranged on the upper and lower edges of the sliding door have angled pieces (b1, c1 and b-, c2) cut at their ends on both sides, which, when the sliding door is closed, run onto guide rollers (e1, fl and e2, / 2) of different widths arranged accordingly on the fixed door frame (g·1, g2) and thereby seal the sealing flaps (κ1, a2) in the closed position of the door. aa) press outwards against the fixed door frame sides (g·3, g4), while flat iron bars (i1, i3) attached to the longitudinal sides of the door and provided with sealing material lie against the corresponding longitudinal sides (g1, g2) of the projecting fixed door frame from the outside or from the inside. This includes one sheet of drawings.