FIELD OF THE INVENTION
The present invention relates to extruded, modular panel units for the construction of walls, ceilings, roofs, canopies and windows, particularly of light-transmitting wall sections. More particularly, the present invention relates to assemblies for constructing such walls, ceilings, roofs, canopies and windows from a plurality of units.
BACKGROUND OF THE INVENTION
Extruded modular panel units of the type of the present invention are known from U.S. Pat. Nos. 4,573,300, 4,998,395 and 5,348,790, whose teachings are incorporated herein by reference.
In these patents, there are disclosed panel units 2 which are interconnected by joining flanges 4 and clamping means 6, as shown in general in FIG. 1. The clamping means 6 project at an angle from the surface of the panels and form longitudinal ribs 8 that project from the surface of the wall or ceiling constructed. In addition, as illustrated in FIGS. 2 and 3, when force is applied on the structure in the direction of arrows A, e.g., by winds, adjacently disposed panel units 2 tend to swing upwardly (FIG. 3), thereby spreading open the clamping means 6 and causing the panels to disengage from the clamping means 6, resulting in the collapse of the structure, or at least parts thereof.
SUMMARY OF THE INVENTION
It is therefore a broad object of the present invention to provide an extruded, modular panel units for the construction of wall-surface portions capable of better withstanding forces tending to disengage adjacently connected panel units.
It is a further object of the invention to provide an assembly consisting of extruded, modular panel units and a matching joining member for constructing walls, roofs and the like, capable of withstanding forces acting on the panel units trying to spread open the joining member.
In accordance with one aspect of the invention there is therefore provided an assembly for securing two juxtaposed panels to a structure, each of said panels including a joining flange located at, or adjacent to, respective juxtaposed edges thereof, the assembly comprising:
a retaining member having a substantially planar surface supporting at opposite edges thereof respective first flanges,
a clamping member having two spaced-apart legs depending from a web, each leg being configured to engage a respective exposed surface of an adjacent joining flange, and
a pair of second flanges each supported on a facing internal surface of a respective one of said legs so as to extend away from the web;
the first and second flanges being oriented in opposite directions so as to inter-lock when the clamping member is mounted on the retaining member and thereby limit lateral separation of said legs.
In accordance with another aspect of the invention there is provided a structure comprising:
two juxtaposed panels each having attached thereto a respective joining flange located at, or adjacent to, respective juxtaposed edges of the panels,
a construction element for supporting the panels,
a retaining member anchored to said construction element and having a substantially planar surface supporting at opposite edges thereof respective first flanges,
a clamping member having two spaced-apart legs depending from a web, each leg being configured to engage a respective exposed surface of a joining flange of the respective panel, and
a pair of second flanges each supported on a facing internal surface of a respective one of said legs so as to extend away from the web;
the first and second flanges being oriented in opposite directions so as to inter-lock when the clamping member is mounted on the retaining member and thereby limit lateral separation of said legs.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to understand the invention and to see how it may be carried out in practice, embodiments will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:
FIG. 1 illustrates a prior art wall construction assembled from extruded modular panel units and joining members;
FIGS. 2 and 3 are cross-sectional views of the prior art wall of FIG. 1, illustrating possible behavior under force;
FIG. 4 is an isometric view of a section of a retaining member of the assembly, according to an embodiment of the present invention;
FIG. 5 is an isometric view of a section of a clamping member of the assembly, according to an embodiment of the present invention;
FIG. 6 is an isometric view of the members of FIGS. 4 and 5, as assembled;
FIG. 7 is a side elevation showing use of the clamping member for interconnecting two juxtaposed panels;
FIG. 8 shows the assembly of FIG. 7, under wind pressure;
FIG. 9 is a side view of an embodiment showing adjoining panels having different flanges;
FIG. 10 is a side elevation of an embodiment illustrating flanges of still different configurations and a matching configuration of the clamping member; and
FIG. 11 is a side elevation of a modification of FIG. 9.
With specific reference now to the figures in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of the preferred embodiments of the present invention only, and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the invention. In this regard, no attempt is made to show structural details of the invention in more detail than is necessary for a fundamental understanding of the invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice.
DETAILED DESCRIPTION OF EMBODIMENTS
Referring to FIGS. 4 to 7, there is illustrated an assembly according to the present invention, for securing two juxtaposed panels 64 and 66 to a construction element 74. The panels are secured by joining flanges 68 and 70 that are located at, or adjacent to, respective juxtaposed edges of the panels 64 and 66, respectively. When assembled, the joining flanges 68 and 70 abut along substantially planar vertical mutually facing surfaces while opposing exposed surfaces of the joining flanges are tapered and are provided with notches that engage complementary notches of a clamping member 16 so as to form a dovetail joint similar to that shown in FIG. 2. However, unlike the clamping means 6 shown in FIG. 2, the clamping member 16 interacts with a retaining member 14 that is adapted to limit or prevent lateral displacement of the panels as will be explained in greater detail below.
Thus, essentially, the assembly is composed of two main members, a retaining member 14 and a clamping member 16 configured to be superposed on the retaining member 14, as seen in FIG. 6. In all embodiments, each of the members may have any required length and even be elongated to extend along the entire length of the juxtaposed panels. The retaining member 14 includes a base portion 18, two spaced-apart walls 20, 22 that extend upwardly from the base portion and support a top portion 24 having a substantially planar upper surface. The top portion 24 substantially extends parallel to the base portion 18 and has, at each of its edges, an upwardly extending flange 26, 28. As will be understood hereinafter, the distance, d, between the base portion 18 and the top portion 24, is substantially the same as the combined height of the panels and joining flanges which are to be accommodated therebetween. Advantage-ously, there is formed a groove 30 along the center of the top portion 24, for reasons which will be described below. Further seen in FIG. 4 are curved ribs 32, 34, projecting respectively, from the base portion 18 and the top portion 24 between the walls 20 and 22. The curved ribs 32, 34 define circular holes for retaining male projections of side closures (not shown) attached to the assembled panels for aesthetic reasons.
FIG. 5 shows the clamping member 16, composed of a web 36 supporting two downwardly depending legs 38, 40. The clamping member 16 may have a generally inverted C- or U-shaped form. The legs 38, 40 may be flexible. At the lower inside faces of the legs, there are formed notches 42, 44, e.g., saw-tooth or barb-shaped notches, configured to inter-engage with the notches of the joining flanges 68 and 70 of the panels 64 and 66 as shown in FIG. 7. Above the notches 42, 44, at an intermediate location along the inside surface of the legs 38, 40, there are formed downwardly extending short flanges 46, 48 configured to extend adjacent the inside facing surfaces of the upwardly extending flanges 26, 28 of the retaining member 14, e.g., extending substantially parallel to the upwardly extending flanges 26, 28 of the retaining member 14, with or without clearance, when assembled (FIG. 6).
For aesthetic reasons, there may optionally be formed in the web 36, a recess 50. There may also be formed a groove 52 at the bottom of the recess 50, similar to the groove 36 of the retaining member 14 (FIG. 4). The recess 50 is closed by a cover 54 (FIG. 6) having projections 56, 58, for press-fitting into the recess 50. Further seen in FIG. 5 are outwardly extending ledges 60, 62 for more positive gripping of the panels fitted in between the first and clamping members.
FIG. 6 shows the member 16 superposed on the member 14, albeit, for clarity, without the juxtaposed panels, which are shown in FIG. 7. Also shown are the flanges 46, 48 riding on top of the flanges 26, 28, while the downwardly extending portions thereof are disposed in spaced-apart relationship, substantially parallel to the upwardly extending portions of flanges 26, 28 in interlocking relationship therewith. By such means, the flanges 26, 28 retain the flanges 46 and 48 and limit or prevent outward lateral displacement of the legs 38 and 40.
FIGS. 7 and 8 show the members 14 and 16 assembled with two juxtaposed panels 64, 66 having joining flanges 68, 70 located at (or adjacent to) the edges thereof. As seen, each of the panels 64, 66 is swung into the space delimited by the base 18 and top portion 24 of the retaining member 14. Self-tapping first screws 72, distanced apart from each other, can then be drilled into a fixed construction element 74. The screw can easily be drilled along the groove 30 without the danger of the edge of the screw slipping away or being displaced from the center line. Once the retaining member 14 with the panels is affixed, the clamping member 16 is slipped over the retaining member 14 and pushed downwardly to cause the notches of the panel flanges and the notches 42, 44 of the member 14 to engage. Advantageously, a self-tapping second screw 76 (shown in FIG. 7 front of the first screw 72) is drilled through the recess 58 of the clamping member 16 into the construction element 74, thereby joining the two members 14 and 16 together and adding gripping strength to the assembly against being dislodged from the stationary construction element 74 under wind or other pressure.
As seen in FIG. 8, if the panels are lifted from underneath by wind or other forces, the upwardly extending short flanges 26, 28 of the retaining member 14 and the downwardly extending flanges 46, 48 of the clamping member 16 interlock, thereby preventing lateral displacement of the legs 38, 40 of member 16 and the consequent disengagement of the respective notches and the disassembling of the entire panel construction.
FIG. 9 illustrates an embodiment in which the panel flanges and the clamping member of the assembly do not have notches. Instead, the juxtaposed panels 64, 66 are provided with flanges 80, 82 having respective mutually facing first surfaces 90 and 92 that are substantially vertical and each having an opposite tapered second surface such that the two juxtaposed flanges form a dovetail joint that becomes wider further from the panel. Similarly, resilient legs 84, 86 of a second hollow member 88 converge towards each other and on assembly with the flanges, grip respective tapered second surfaces of the flanges 80, 82.
FIG. 10 shows a similar arrangement where tapered flanges 96, 98 are formed within the height of the panels and do not project from the major surfaces of the panels. Complementary legs 84, 86 grip the flanges to form a dovetail joint as described above. However, each of the flanges can also be formed with at least one notch such as are suitable for engaging notches 42, 44 of the clamping member 16, shown in FIG. 5.
In both of the embodiments of FIGS. 9 and 10, the same mechanism is provided as described with reference to FIGS. 4 to 8 for preventing the mutual dislocation of juxtaposed panels, whereby flanges 26, 28 interlock with flanges 46, 48, with or without clearance of members 94 and 88, respectively.
FIG. 11 shows a slightly modified variation that is similar to the embodiment of FIG. 9, except that the facing surfaces of the juxtaposed panel flanges 100, 102 are spaced-apart, allowing a screw 104 to pass therebetween for attaching the retaining member 106 to a construction element 74.
While the drawings show constructional panels having two major surfaces defining the height of the panel, and covering sub-spaces formed therein, as known per se, it is emphasized that the present invention is also applicable to other types of similar panels, such as panels without inner sub-spaces, or panels in which the connecting flanges are within the height of the panel, etc.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrated embodiments and that the present invention may be embodied in other specific forms without departing from the scope of the claims and equivalents thereof.
Patent Application
20100242397
