A JOINT IN PREFABRICATED INSULATED PANELS

Abstract: A joint in prefabricated insulated panels (1) of the kind made up from two sheets (1a and 1b) of which one is superimposed upon the other and where an insulating material (1c) is sandwiched in between them, peculiar insofar that two edges of the panels abut one another; that the upper sheet (1a) on each panel (1) possesses a tongue (11) and a groove (12a) lying alongside one another in a location which is very close to the edge; that a sealing piece (2) is inserted into said grooves (12a) and is self-locked therein by virtue of becoming pressed in the direction of the panels (1); that inside said grooves (12a) there is moreover inserted a fastening piece (3) which is superimposed upon said sealing piece (2) where the assembly is pierced by securing arrangements (4) to accomplish its attachment to a structure; and that there exists on the outside of that face of the joint, a joint cover (5) which is press fitted onto sections provided on the panels (1) in order to conceal the tongues (11) and the joint from view.

Description: A JOINT IN PREFABRICATED INSULATED PANELS. This invention is concerned with a joint between prefabricated insulated panels of the kind made up of two sheets made generally of metal, and between which there is inserted a filler material possessing heat and sound proofing qualities. The intention is to achieve a tight, rigid and positive joint between either identical or non-identical panels, and accordingly the joint is either symmetrical or non-symmetrical. The joint whose novelty is claimed under the present invention is characterized by the fact that on one surface of each of the panels, there is a tongue and a groove lying alongside one another at a point very close to the edge, while the opposite surface possesses a groove whose posit ion may vary with respect to said tongue. Grooves on the same surface may be at the same distance from the edge of the panels or not. The invention is also characterized by the fact that in each one of said grooves facing towards the same side there is inserted a seal piece which is self-locked therein upon being compressed towards the panels, and by the fact also that in the two grooves on one same side, there is also inserted a fastening piece which is superimposed upon the seal piece on that same side, while the assembly thus formed is pierced by securing arrangements to fasten it to a structure. It is furtherllere ctijractri,cd by the fact that on the outside there is a joint cover on one face of the joint which is press fitted onto sect ions on the panels so as to conceal the tongues and the joint. It is characterized moreover by the fact that each of said grooves is an elongated cavity which takes up the whole or part of the width of the panel, and possesses a "U" cross section, one of whose arms is sloped negatively away from the web. It is also characterized because one of the seal pieces at least possesses a "U" shape with short arms sloping negatively away from the web, so that when such seal pieces are proffered up to the joint between panels, their arms are housed inside the grooves and lock a protru ding portion which originates from the negative slope of one of its arms to seal the joint. It is moreover characterized because at least one but preferably a plurality of curved, inclined, sloping or any other kind of curved confi gurations are formed on one of the sheets by stamping or pressing which reduce its overall length (L2) as measured along a tangential line to the portions that protrude most from its outline with respect to the overall length (L1) of the other sheet as measured in an identical manner, so that in the panel construction, the ends thereof are offset from one another by an angle a which is in proportion to the difference in lengths, d= L1 - L2. Figure 1 depicts an elevational section view of the general arran gement of the panels. In this particular case, the joint between panels is symmetrical on the left hand joint, but it remains clearly understood that it could be asymmetrical as explained 'elsewhere, while the right hand joint lacks joining means for the lower sheets (lb). Figure 1 also depicts the tongue (A) whose chief purpose is to give the assembly a feeling of continuity, because from the outside, tongue (A) might be mistaken for the joint cover (5), although the assembly may also lack said tongue (A). Figure 2 shows an enlarged elevational view of a joint between insulated panels in Figure 1. Figure 3 depicts an elevational view of a joint between insulated panels in Figure 1, but without the asymmetrical joint. Figure 4 is a diagramatic view of a panel with an offset angle obtained by means of a curve from two straight end pieces and shapes (110) in sheel (lb). The joint between prefabricated insulated panels is applicable to panels (1) of the kind made up from two plates (lea) and (Ib) (upper and lower respectively as shown in the figures) between which there is sandwiched a filler material (lc) which has heat and sound proofing properties. This fill material is held at the side by a gasket seal (6). Sheets (la) and (lb) possess a tight bend (100) and (101) on their edge intended for the joint between panels. This bend (100) on sheet (la) (that is, the upper sheet in the drawings) clasps the edge (61) of the gasket seal (6), whilst the other edge (62) rests upon the bend (101) in sheet (lb). The gasket seal (6) possesses a central area (63) which cushions the joint between the two panels. The joining edges of the panels shown in Figure 2 are symmetrical in shape, and as may be seen from that figure, each one defines: - a groove (12b) on its lower sheet (lib'), - a groove (12a) on the opposite surface, and in direct opposition to the above groove, - a tongue (11) adjacent to groove (12a) which protrudes from the upper sheet (lea) on each panel (1), - a section (13) for assembling other parts of the joint (explained elsewhe re). The joint shown in Figure 3 is asymmetrical, and here it may be seen that the groove (12b) on the lower sheet (Ib) is offset with respect to the groove (12) on the upper sheet (Ic). The joint being dealt with here also comprises: - seal pieces (2), - fastening piece (3), - securing arrangements (4), and - a joint cover (5). Grooves (12a) and (12b) are identical to one another, and each possesses a "U" shaped cross section where one of the arms (121) is negatively sloped from the web. Tongues (11) protrude with respect to the upper sheet (la) of panel (1) and one of their walls (111) is common to one of the arms (122) of the groove (lea) on the upper sheet (la). Section (13), which is preferably half round in section, is provided on the very sheet (la) of panel (1) which defines the tongue (11), and may be located upon the panel (1) itself, on the tongue (11) or, preferably where the two meet together as is shown on the drawings. Tongue (11) possesses protrusions or indentations (lla) which afford it improved stiffness. At least one of the sealing pieces is a single-piece body (2) in a "U" section having a very wide web and not very long arms (21). These arms (21) are curved in a convex-concave fashion in the form of two successive and facing curved lengths. Both sealing pieces may be identical to one another (Figure 3). Optionally, and in accordance with Figure 2, one of the sealing pieces may be a single-piece body (2') in a "U" section having a very wide web and not very long arms (21). These arms (21) define three successive lengths as follows: a first length (211') that is parallel or substantially parallel to the web; a second or intermediate length (213'), and a third length in a slope (212') facing inwards. In this case, the outer face of the sealing piece (2') protrudes from the outside face of the lower panel (lib) As a further option, lower plate (lb) may, in the event of embodying a sealing piece (2'), define undercuts (14) (see Figure 1) in which is seated portion (211') of the sealing piece (2'), where the web of this latter lies in the same plane as the lower sheet (lb). All these options are interchangeable with one another. Fastening piece (3) is a single piece body possessing a "U" section with a wide web and short arms. Said arms are accommodated in grooves (12a) on the upper sheet (la). The joint cover (5) is a single piece body possessing a "U" section whose arms (50) may lie at right angles to the web (52) or, prefera bly, diverge slightly away from one another. The tips (51) of the arms (50) are curved in shape and bent about themselves. The invention is completed with the securing arrangements (4), which preferably comprise bolts that may lie In one row (Figure 3) or in two rows where the bolts are staggered (Figures 1 and 2), or in other similar arrangements. With the make up as described above, assembly is carried out as follows: - panels (1) are placed in abutment to one another; - sealing pieces (2), (2') are applied to either side and engaged by pressing. Their arms (21) are accommodated in grooves (12a), (12b) and embrace the sloping arm (121) thus forcing the panels (1) towards each otter; - fastening piece (3) is inserted in a superimposed position upon one of the sealing parts (2), and its arms too are accommodated in the grooves on that side; - a structure (not illustrated) is attached to the assembly by means of securing arrangements (4), which in this case are bolts which are inserted through the fastening piece (3), the sealing pieces (2), (2') and the panels (1) which are previously drilled with holes; ; - the outside assembly is insulated by inserting the joint cover (5), for which purpose its sections (51) are housed in slots (13) provided on the upper sheets (la). The invention also provides for the possibility of obviating the need for the joining means on the lower sheet (ib), in which case there would be no grooves (12b) or lower sealing pieces (2), and a total continuity could exist between the lower sheets (lb) of the two panels to be joined (See Figure 1, right hand joint). The tongue (A) in the area where same engages with the panel assembly possesses an indentation (51 bis) which prevents the filler material (lc) from becoming detached from the upper panel (la).

Claims: CLAIMS, 1. A joint in prefabricated insulated panels of the kind made up from two sheets of which one is superimposed upon the other and where an insulating material is sandwiched in between them, peculiar insofar that two edges of the panels abut one another; that the upper sheet on each panel possesses a tongue and a groove lying alongside one another in a location which is very close to the edge; that a sealing piece is inserted into said grooves and is self-locked therein by virtue of becoming pressed in the direction of the panels; that inside said grooves there is moreover inserted a fastening piece which is superimposed upon said sealing piece, where the assembly Is pierced by securing arrangements to accomplish its attachment to a structure; and that there exists on the outside of that face of the joint, a joint cover which is press fitted onto sections provided on the panels in order to conceal the tongues and the joint from view. 2. A joint in prefabricated insulated panels in accordance with the preceding claim, and peculiar wherewith the lower sheet possesses a groove close by to its edge, and where a sealing piece is inserted into the grooves on two adjoining lower sheets, and is self-locked therein by being pressed towards said sheets. 3. A joint in prefabricated insulated panels in accordance with claim 1 or 2 in which each one of said grooves is an elongated cavity which takes up the whole or part of the width of the panel and possesses a "U" shaped cross-section one of whose arms is negatively sloped away from the web while at least one of the sealing pieces possesses a "U" shape with short arms which are negatively sloped way from its very wide web all in such a way that upon being proffered to the joint between panels, said sealing pieces adopt a position where their arms become housed inside the grooves and clasp a protruding portion which is there by virtue of the negative slope of one of its arms, and thus scals the joint. 4. A joint in prefabricated insulated panels in accordance with claim 1 or 2 in which each one of said grooves is an elongated cavity which takes up the whole or part of the width of the panel and possesses a "U" shaped cross-section one of whose arms is negatively sloped away from the web while at least one of the sealing pieces possesses a "U" shape the arms of which each define a first length that is parallel to the web by way of a seat, a second intermediate length, and a third sloping length facing outwards in such a way that while abutting the panels by way of the seat lengths, its arms are accommodated in the grooves on said panels and press them together due to the effect of the sloping arms. 5. A joint in prefabricated insulated panels in accordance with claim 2 and claims 3 or 4 in which the sealing pieces are identical to one another. 6. A joint in prefabricated insulated panels in accordance with any preceding claim in which the grooves on any single panel are positioned so as to face one another. 7. A joint in prefabricated insulated panels in accordance with any preceding claim in which each panel is provided with an undercut in relation to the seating area for the sealing piece so that said sealing piece lies flush with the panels. 8. , A joint in prefabricated insulated panels in accordance with any preceding claim in which said fastening piece that is superimposed upon one of said sealing pieces possesses a "U" cross section with a wide web and short arms, these latter being substantially at right angles to the web and housed in the grooves on one given side. A A joint in prefabricated insulated panels in accordance with any preceding claim in which the joint cover is shaped like a letter "U", the arms of which, being set at right angles, or in a slightly sloping position, terminate in rounded shapes which fit into recesses provided for the purpose on the outside face of the panels at the edge or abutment of same in such a way that upon being press inserted therein, they conceal the joint from view. 10. A joint in prefabricated Insulated panels in accordance with any preceding claim in which each tongue possesses protrusions to afford it greater stiffness. 11. A joint in prefabricated insulated panels in accordance with any preceding claim in which the outside of the panels possess tongues whose outside shape is identical to that of the joint covers. 12. A joint in prefabricated insulated panels in accordance with any preceding claim in which the edge of each sheet intended to make the joint between panels possesses a tight bend, and the bends of the two sheets on each panel grip the edges of a gasket seal. 13. A joint in prefabricated insulated panels in accordance with claim 11 or claim 11 and 12 in which the outside tongues, which are identical to the joint covers, possess an indentation in the area where they are attached to the panel assembly, which prevents the fill material from becoming detached from the upper sheet. 14. A joint in prefabricated insulated panels in accordance with any preceding claim in which at least one but preferably a plurality of curved, inclined, sloping or any other kind of curved configurations are formed on one of the sheets by stamping or pressing which reduce its overall length (L2) as measured along a tangential line to the portions that protrude most from its outline with respect to the overall length (L1) of the other sheet as measured in an identical manner, so that in the panel construction, the ends thereof are offset from one another by an angle which is in proportion to the difference in lengths, d = L1 L2. 15. A joint in prefabricated insulated panels of the kind made up from two sheets of which one is superimposed upon the other and where an insulating material is sandwiched in between them, peculiar insofar that two edges of the panels abut one another; that the upper sheet on cacti panel possesses a projection and a recess lying alongside one another in a location which is adjacent to the edge; that a sealing means is inserted into said grooves and is self-locked therein by virtue of becoming pressed in the direction of the panels; that inside said grooves there is moreover inserted a fastening piece over said sealing means.

Inventors: LARREA, D. JUAN
Applicants: PERFIL EN FRIO S.A. (PERFRISA)
Application year: 1985
Main classification: E04B1
IPC codes: E04F13, F16B5, E04C2, E04B1