JP3170384B2 - Fireproof sandwich panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a sandwich type system wall panel.

Conventionally, such a panel is formed of a heat insulating core sandwiched between first and second metal outer plates. While the insulating core is often in the form of a foamable compound, other insulating cores are made of fibrous materials such as those sold under the trademark "ROCKWOOL".

[0003] Such sandwich panels may need to be fire resistant, in which case the rock wool core would be preferred because of its inherent fire resistance.

The opposite edges of the panels are usually provided with protruding ribs and grooves so that adjacent panels are interconnected. In order to provide sufficient stiffness, at least one of the opposing edges is provided with a continuous coupling member that typically extends between the first and second skins. However, a problem with such panels is that the connecting members can form thermal bridges that reduce the thermal insulation of the core. Since a sufficient degree of heat insulation is obtained, the selection of the material of the connecting member is limited. For example, in a structure as shown in EP-A-324 282, a rim, usually formed of extruded aluminum, is provided with one longitudinal edge of each of the skins of the first and second materials; Extending along the rims are facing each other, with their free ends extending parallel and spaced apart from each other, with a pair of grooves on the sides and the longitudinal direction of the panel. A central joining protruding rib extending from the edge, and a pair of spaced parallel legs formed by the edges of the first and second skins and projecting from the core at opposing longitudinal edges of the panel. To form
The legs are spaced so as to form a recess for receiving the protruding rib of an adjacent similar panel, with the legs penetrating into the grooves of the adjacent panel, and at least one rigid connection is provided. Interlocking protruding ribs inserted between the rims to form free ends to prevent the rims from moving toward and away from each other.

One problem in providing sufficiently fire resistant panels is that the temperatures are such that when the flame reaches a certain strength, the metal skin on the flame side of the panel melts.
When using an aluminum rim, it also melts,
The entire panel will break down. While considerations have been given to forming steel connections, such connections have rather complex shapes and are substantially impossible to manufacture economically.

According to the present invention, a heat insulating core, a first metal skin bonded to one surface of the core, a second metal skin bonded to the opposite surface of the core, and a first and a second metal skin. Two separate elongated steel joining members connected to the second skin and extending parallel and spaced apart to form a central joining protruding rib, the joining members moving toward and away from each other; And a first and a second connecting member for connecting one pair of joining members with one end at one end of the pair of joining members and the other end at the other end, so that the joining member is a sheet-shaped expandable member. steel,
Formed of a steel grid or perforated steel sheet, the central joining protruding rib has a pair of grooves on its sides and protrudes from the longitudinal edge of the panel and a pair of spaced parallel ribs. Leg is formed at the edges of the first and second skins and protrudes from the main insulating core at opposite longitudinal edges of the panel, said leg receiving a protruding rib of an adjacent similar panel. It is proposed to provide a sandwich type system wall panel which is spaced so as to form a concave groove in the adjacent panel so as to enter the groove of the adjacent panel.

[0007] The coupling is made of a special sheet-like expanded steel-like material that has sufficient strength but provides a relatively small cross-section thermal bridge path, thereby maintaining the integrity of the insulating core, which Even if the metal skin facing the flame melts, it can act as a true barrier to the flame on one side of the panel. The melting point of steel is significantly higher than the melting point of aluminum, so there is little risk of melting of the joints or connections. The rock wool core will act as a sufficient flame barrier for a considerable period of time and will therefore provide sufficient time for those on the side of the panel away from the flame to quickly escape.

[0008] An inwardly facing bead is provided extending along one longitudinal edge of each of the first and second metal skins, the inwardly facing beads facing each other. And preferably extend parallel to and spaced from each other.
The two separate elongated steel joining members are generally U-shaped and include a short arm and a longer arm each engaging a corresponding inwardly facing bead of the first and second skins, the longer arm being longer. Preferably, the arms are spaced in parallel so as to form said projecting ribs.

The corresponding inwardly facing beads of the first and second skins may simply be U-shaped, but in a preferred construction the U-shaped steel is used to more securely hold these joints together. 1 that can be engaged with the short arm of the joining member
It may include one or more inwardly directed protrusions.

A heat insulating core is provided in the protruding rib and the first
And between the second link and the second link, thereby providing greater thermal insulation. With respect to the recess formed on the opposite side of the panel, the insulating part has two parts extending inwardly of the spaced parallel legs, the inside of these parts being adjacent to the projection of a similar panel. It is preferable to form a concave groove for receiving the rib.

The term "steel" should be understood to cover any refractory metal.

BRIEF DESCRIPTION OF THE DRAWINGS In order that the invention may be more readily understood, it will be described in detail hereinafter, by way of example only, with reference to the accompanying drawings, in which: FIG. Reference is first made to FIG.
A portion of one adjacent panel 10, 12 is shown. The panels are substantially equivalent and include a first metal skin 14 on one side and a second metal skin 16 on the other side, which are attached to an insulating core 18 made of rock wool. Glued. The right edge of panel 10 is shown having an inwardly facing bead 20 and skin 16 is shown having an inwardly facing bead 22.

The opposite edge of the panel, the edge shown on the left side of panel 12 in FIG.
4, 16 are provided with a pair of parallel legs 24, 26 spaced apart. At this edge of the panel, the insulating core 18 has spaced parallel legs 24,
It preferably includes two portions 28, 30 extending inwardly of 26 and forming a groove 32 therebetween.

The right edge of panel 14 is shown as being provided with two joining members 34, 36, which are more clearly shown in FIG. These two joining members are each U-shaped with a shorter arm 38, a web portion 40 and a longer arm 42 having an inwardly directed flange 44 at the free end. It will be seen that the shorter arms 38 are each provided with a crank-shaped flange 46.

The two joining members 34 and 36 are connected to a web 40
Expanded metal connector 48 spot welded to
And a second connection body 50 spot-welded to the flange 44. As shown in FIG.
The arm 4 having a longer insulating core portion 52 of other rock wool
2 and the connecting bodies 48 and 50. In FIG. 1, a crank-shaped flange portion 46 includes a joining member 34,
Inwardly facing beads 20, 2 to hold and secure 36
It will be seen that it engages 2. FIG. 3 shows two forms of inwardly directed beads. In the upper part, the inwardly facing bead is a simple U-shaped member as shown in FIG. The inwardly facing bead in the lower part of FIG. 3 is an inwardly facing bead that can engage the left side of the crank-shaped flange 46 as shown in FIG. 1 to more securely hold and fix the shorter arm 38. Has one or more protrusions 54 facing the same. The longer arm 42, flange 44, connector 50 and core 52 form a protruding rib 33 engageable with the concave groove 32, and the protruding rib 33 is laterally provided with the groove 3
5 and 37, into which the legs 24 and 26 and the cores 28 and 30 enter.

The joining members 34,36 are easily roll formed from sheet steel having a much higher melting point than the aluminum of the skins 14,16. The coupling bodies 48 and 50 are also made of steel, and are formed of sheet-like expanded steel formed by a conventional expanded metal technique. As another example, the connectors 48, 50 could be formed of perforated sheet steel or steel grid. Whichever method is used, the connector provides a sufficient connection between the members 34, 36, but with a relatively small cross-section of heat. The connectors 48, 50 will therefore not create as much thermal bridging and will therefore have little tendency to rise to a temperature high enough to melt the skin away from the flame.

The joining members 34, 36 and the connecting members 48, 50
The steel structure is well able to withstand high temperatures and will retain the integrity of the structure if one skin melts.
The rock wool core is refractory and will be held and secured by an assembly of joining members and connectors.

FIG. 4 shows very schematically how the panel according to the invention is mounted. A support member 60 extends vertically and attaches a bracket held to the support member 60 by screws 64 to each panel. The arm 66 of the bracket extends into the space formed between the inwardly facing bead 22 of the panel 10 and the leg 26 of the panel 12. Thus, the arm 66 has the panels 10, 1
2 is pressed against the support member 60 and held. A sealing member 68 is engaged between the bead 20 on the far side of the panel and the leg 24.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a joint between two panels according to the present invention.

FIG. 2 is a similar view showing two joining members integrally attached by first and second connectors.

FIG. 3 is a view showing another shape of an inwardly directed rim of the panel of FIG. 1;

FIG. 4 is a schematic partial view showing a support portion of two adjacent panels.

[Explanation of symbols]

 14 Metal outer plate 16 Metal outer plate 18 Insulated core 24 Leg 26 Leg 32 Concave groove 33 Joint protruding rib 34 Steel joint member 35 Groove 36 Steel joint member 37 Groove 48 Joint body 50 Joint body

Continuation of the front page (73) Patent holder 591011672 40 Caracasbaaiweg, Curacao, Netherlands Lands Antilles (56) References JP-A-1-250551 (JP, A) Japanese Utility Model Showa 57-159904 (JP, U) (58) Search Field (Int.Cl. ⁷ , DB name) E04F 13/08-13/18 E04B 1/94 E04B 2/74 501

Claims (7)

(57) [Claims] An insulating core (18), a first metal skin (14) bonded to one surface of the insulating core, and a second metal bonded to an opposite surface of the insulating core. Outer plate (16)
And two separate elongated steel joining members (34, 36) connected to the first and second skins and extending parallel and spaced apart to form a central joining protruding rib (33). First and second connecting one pair of joining members with one end to one end of the pair of joining members and the other end to prevent the joining members from moving toward and away from each other. (48, 50), wherein the connected body is formed of sheet-like expanded steel, a steel grid, or a perforated steel sheet, and the central joint protruding rib (3,
3) has a pair of grooves (35, 37) on its side and protrudes from the longitudinal edge of the panel, and a pair of spaced parallel legs (24, 26) has first and second grooves. Formed at the edges of the outer panel and projecting from the main insulating core at opposite longitudinal edges of the panel, the legs forming recessed grooves (32) for receiving projecting ribs of an adjacent similar panel. A sandwich-type system wall panel, which is spaced apart so as to enter the groove of an adjacent panel. 2. An inwardly facing bead (20, 22) provided to extend along one longitudinal edge of each of said first and second metal skins (14, 16). 2. The system wall panel according to claim 1, wherein said inwardly facing beads are facing each other and extend at a distance parallel to each other. 3. The two separate elongated steel joining members (34, 36) are generally U-shaped and each has a corresponding inwardly facing bead (20, 20) of the first or second skin. 22)
The shorter arm (38) and the longer arm (4
2) wherein the longer arm is connected to the projecting rib (3).
The system wall panel according to claim 2, characterized in that it extends parallel and at a distance to form (3). 4. The system wall panel of claim 3, wherein the corresponding inwardly facing beads of the first and second skins are U-shaped. 5. One or more inwardly engageable short arms of the joint member such that the inwardly directed beads hold the U-shaped steel joint member more securely. 4. The system wall panel according to claim 3, wherein the system wall panel includes an oriented protrusion. 6. The heat insulating core of claim 1, wherein said heat insulating core is also provided in said projecting rib and engages between said first and second linkages, thereby providing a greater heat insulating effect. A system wall panel according to any one of claims 1 to 5. 7. The heat insulator has two portions (28, 30) extending inwardly of the spaced parallel legs, the interior of which are adjacent adjacent projecting ribs of a similar panel. System wall panel according to any of the preceding claims, characterized in that a recess (32) is formed for receiving a (33).