The present invention relates generally to mounting supports for solar panels and, more particularly, to a plastic mounting support for a solar panel on flat or low slope roof installations.
It is known to provide a mounting support or mount for a solar panel. In at least one form, the mount has a bottom for placement on a flat surface and a plurality of walls extending upwardly from the bottom to form a box-shaped chamber for receiving ballast such as gravel or paving stones as “dead weight” to hold the mount in place against wind uplift, etc. The mount also has flanges extending outwardly from the walls to provide supporting surfaces for laying on the solar panel and fastening mechanisms for fastening the solar panel on the supporting surfaces. The mount is produced from a thermoset or thermoplastic material by an injection molding process or low pressure process. Recently, the solar industry has instituted aggressive cost targets for mounting supports in order to reduce overall solar installation costs to compete with other forms of energy. Designing a support or mount for a solar panel that meets the low cost target while meeting performance targets is a great challenge for the industry.
It is, therefore, desirable to provide a plastic mounting support for a solar panel that provides a cost efficient solution. It is also desirable to provide a plastic mounting support for a solar panel that uses existing blocks for ballast made of materials such as cement, sand, or gravel as a primary structure. It is further desirable to provide a plastic mounting support that cooperates with a ballast block that carries part of a load on the entire structure. It is still further desirable to provide a plastic mounting support that can be used for every location and configuration for mounting solar panels.
Accordingly, the present invention is a plastic mounting support for a solar panel. The plastic mounting support includes a plastic base adapted to engage a support surface and support a ballast block and a plastic member for connection to the solar panel and cooperating with the base to hold the ballast block therebetween such that the ballast block cooperates with the plastic mounting support to carry part of a downward load on the solar panel, as well as, resists an upward wind load on the solar panel.
One advantage of the present invention is that a plastic mounting support is provided for mounting a solar panel thereon. Another advantage of the present invention is that the plastic mounting support meets load and structural requirements for a solar panel mounted thereon. Yet another advantage of the present invention is that the plastic mounting support incorporates existing one or more cement blocks as ballast for a primary structure to reduce the amount of plastic material for the support. Still another advantage of the present invention is that the plastic mounting support uses the cement blocks as a safety factor structural support if for some reason the plastic material experiences greater than designed for loads or the plastic material experiences creep or any type of mechanical overload. A further advantage of the present invention is that the plastic mounting support can withstand relatively large loads on the solar panel. Yet a further advantage of the present invention is that the plastic mounting support can be used for every location and configuration for mounting a solar panel. Still a further advantage of the present invention is that the plastic mounting support provides a cost efficient solution by being made of plastic and using existing cement blocks as ballast. Another advantage of the present invention is that the plastic mounting support weight is reduced compared to conventional solar mounts made with plastic materials.
Other features and advantages of the present invention will be readily appreciated, as the same becomes better understood, after reading the subsequent description taken in conjunction with the accompanying drawings.
Referring to the figures, wherein like numerals indicate like parts throughout the several views, one embodiment of a plastic mounting support, according to the present invention, is shown generally at 10. The plastic mounting support 10 is configured to have a solar panel, generally indicated at 12, mounted thereon. As illustrated in
Referring to
The plastic mounting support 10 also includes a plastic member 24 adapted to extend over one or more ballast blocks 26 for connection to the solar panel 12 and cooperating with the base 16 to hold the ballast blocks 26 therein. In the embodiment illustrated in
As illustrated in
The member 24 also includes a pair of end walls 32 extending laterally between the side walls 28 and upwardly from opposed lateral ends of the base 16. In one embodiment, the end walls 32 extend upwardly at an angle. Each of the end walls 32 may include one or more apertures 34 extending therethrough to reduce weight and material. The apertures 34 are generally rectangular in shape, but may be any suitable shape. In one embodiment, one of the end walls 32 has a height greater than a height of the other end wall 32.
The member 24 further includes a top wall 36 extending longitudinally between the end walls 32 and laterally between the side walls 28. The top wall 36 is generally rectangular in shape, but may be any suitable shape. In the embodiment illustrated, the top wall 36 has a stair-step configuration of a first top wall 36a, a second top wall 36b, and a third top wall 36c. The third top wall 36c is at a height greater than the first top wall 36a. The top wall 36 may include one or more apertures 38 extending therethrough to reduce weight and material. It should be appreciated that the top wall 36 may have any suitable configuration.
The plastic mounting support 10 includes one or more projections 40 for attachment to the solar panel 12. In the embodiment illustrated, the member 24 has one projection 40 extending outwardly and upwardly from the top wall 36. The projection 40 has an aperture 42 extending therethrough to receive a fastening mechanism such as a fastener or rod (not shown) for connection to the solar panel 12. The projection 40 may a single piece or a pair of members spaced laterally from each other with each member having an aperture 42 extending therethrough. In the embodiment illustrated, the base 16 has one projection 40 extending outwardly and upwardly from a pedestal 41 extending upwardly from the mounting flange wall 22. The projection 40 has an aperture 42 extending therethrough to receive a fastening mechanism such as a fastener or rod (not shown) for connection to the solar panel 12. The projection 40 may a single piece or a pair of members spaced laterally from each other with each member having an aperture 42 extending therethrough. The base 16 may include one or more ribs 44 extending longitudinally between the projection 40 and the end wall 32. The ribs 44 may be spaced laterally. It should be appreciated that the plastic mount support 10 is modular and that a plurality of the mounting supports 10 may be stacked together for shipping.
The plastic mounting support 10 is made of a polymeric material. The polymeric material may be a thermoplastic or a thermoset. In one embodiment, the base 16 and member 24 are made of a polymeric material reinforced by a percentage of fibers by weight based on a total volume of the polymeric material. In one embodiment, the percentage of fibers ranges from zero percent (0%) to approximately sixty-five percent (65%). The fibers are at least one of a glass, carbon, mineral, and/or metallic material. In one embodiment, the fibers are typically long glass or carbon fibers, short glass or carbon fibers, or a combination of long and short glass and/or carbon fibers. It should be appreciated that the fibers may vary in size (e.g. length, diameter, etc.) and may be coated or uncoated. For example, in one embodiment, the fibers may have an average diameter of less than 13 microns. In other embodiments, the fibers may have an average diameter of 10 microns or less. The polymeric material or the fibers themselves may include other components to encourage bonding between the polymeric material itself and the fibers. An example of suitable fibers for the present invention includes ChopVantage® HP 3660 commercially available from PPG Industries Inc., One PPG Place, Pittsburgh, Pa. 15272.
The polymeric material could be any polymer, such as one of the following classes of thermoplastic or thermoset polymers: any member from the group of polyesters, polyamide, polyethylene, polyethylene terephthalate, acrylonitrile, butadiene styrene, polymethyl methacrylate, cellulose acetate, cyclic olefin copolymers, fluoropolymers, polyoxymethylene, polyacrylates, polyacrylonitrile, polyaryletherketone, polyamide-imide, polybutylene terephthalate, polyurethanes, polyketone, polyetheretherketone, polyetherimide, polycarbonate, polymethylpentene, polyphenylene sulfide, polyphenylene oxide, polyphthalamide, polystyrene, polysulfone, polyvinyl chloride, and styrene-acrylonitrile, and any combinations thereof.
In one embodiment, the polymeric material is a polyamide. Although not required, the polyamide is typically selected from the group of polyamide 6, polyamide 6,6, polyamide 46, polyamide 6,10, polyamide 6I,6T, polyamide 11, polyamide 12, polyamide 6,12, and any combinations thereof. However, it should be appreciated that polymeric materials other than polyamides may also be used to manufacture the plastic mounting support 10. An example of a suitable polyamide for the present invention includes Ultramid® 8233G HS commercially available from BASF Corporation, 100 Campus Drive, Florham Park, N.J. Another example of a suitable plastic material is Ultramid® B3WG10 commercially available from BASF Corporation, 100 Campus Drive, Florham Park, N.J.
In one embodiment, the polymeric material may include an impact modifier for imparting impact resistance to the polymeric material. When employed, the impact modifier is typically present in an amount of from about 1 to about 20 parts by weight based on a total weight of the polymeric material. The impact modifier could be any impact modifier, but may be selected from the group of elastomers, ethylene copolymers, ethylene-propylene copolymers, ethylene-propylene-diene terpolymers, ethylene-acrylate copolymers, styrene-butadiene copolymer, styrene-ethylene/butylene-styrene terpolymers, polyurethanes, and any combinations thereof. An example of a suitable impact modifier for the present invention is FUSABOND® grade N493D commercially available from DuPont Company, Lancaster Pike & Route 141, Wilmington, Del. 19805.
In another embodiment, the polymeric material may include ultra-violet (UV) stabilizers, for example, a benzotriazole-type ultraviolet absorber.
In yet another embodiment, the polymeric material may include pre-color pigments or dyes. Although not required, the polymeric material may comprise a colorant component for modifying a pigment or dye of the polymeric material. When employed, the colorant component is typically present in an amount such as 0.01 to about 10 parts by weight based on a total weight of the polymeric material. An example of a suitable colorant component for the present invention is Orient Nigrosine Base SAPL commercially available from Orient Corporation of America, 1700 Galloping Hill Road, Kenilworth, N.J. 07033. It should be appreciated that the other suitable impact modifiers, UV stabilizers, and pre-color pigments known in the art may be used.
In yet another embodiment, the polymeric material may include an additive to improve ignition resistance of the polymeric material, such as a phosphorus compound.
The present invention further provides a method of making the plastic mounting support 10. In one embodiment, the plastic mounting support 10 is made from an injection molding process. In another embodiment, the plastic mounting support 10 is made from a gas-assisted injection molding process.
The method generally includes the steps of providing a mold (not shown) which defines a cavity and core for the plastic mounting support 10. In one embodiment, the method includes the steps of injecting polymeric material into the cavity and core of the mold to form the plastic mounting support 10 at a predetermined height to attach the solar panel 12 at a specific angle. In another embodiment, cavity and core inserts (not shown) are inserted into the mold prior to the step of injecting the polymeric material to form the pedestal 41 and the plastic mounting support 10 to allow the solar panel attachment height of the support 10 to be raised or lowered to decrease or increase, respectively, the angle of the solar panel 12. Once the plastic mounting support 10 is formed, the method further includes the steps of opening the mold and removing the plastic mounting support 10 from the mold. It should be appreciated that the injected molded plastic mounting support 10 is one-piece. It should be appreciated that plastic mounting support 10 may be made by various other methods, not specifically described herein.
In operation, one plastic mounting support 10 is disposed near one corner of the solar panel 12 as illustrated in
Referring to
Referring to
The member 214 includes a pair of opposed straps 258. The straps 258 are generally rectangular in shape. The straps 258 may include upper and lower projections 260 extending outwardly for cooperating with one of the apertures 254 in one of the side walls 252. It should be appreciated that a width of the straps 258 may be varied.
The member 214 includes a cap 262 disposed on the ballast block 26 opposite the base 216. The cap 262 has a top wall 264 and opposed side walls 266 extending downwardly from the top wall 264. Each of the side walls 266 have an aperture 268 extending therethrough. The cap 262 also has end walls 270 extending between the side walls 266 and downwardly from the top wall 264. The member 224 includes at least one projection 240 extending upwardly from the top wall 264 of the cap 262 and having an aperture 242 extending therethrough for attachment to the solar panel 12. It should be appreciated that the upper projection 260 on the strap 258 is received in one of the apertures 268 in one of the side walls 266. It should also be appreciated that the plastic mounting support 210 is made of a plastic material and each piece or member is integral, unitary, and one-piece. It should further be appreciated that the same mounting support 210 is used for every location and configuration.
Referring to
Referring to
Accordingly, the plastic mounting support 10, 110, 210 combines a plastic structure with one or more ballast blocks 26 such that the ballast blocks 26 carries part of the load on the support 10, 110, 210 or may carrier the load in case the plastic structure has any deformation due to creep, etc. The plastic mounting support 10, 110, 210 uses one or more ballast blocks 26 as support to resist upward loading against the solar panel 12 due to wind uplift and carries the downward loading against the solar panel 12 due to snow or seismic activity or any other type of loading. The plastic mounting support 10, 110, 210 in combination with one or more ballast blocks 26 reduces the amount of plastic material used for the support, resulting in significant cost savings. It should be appreciated that the plastic mounting support 10, 110, 210 could further reduce the amount of plastic material used such as by reducing the thickness of the material and/or using a shim (not shown) between the ballast blocks 26 and the plastic mounting support 10, 110, 210. It should further be appreciated that the ballast block 26 may be or not be a load carrying member.
The present invention has been described in an illustrative manner. It is to be understood that the terminology, which has been used, is intended to be in the nature of words of description rather than of limitation.
Many modifications and variations of the present invention are possible in light of the above teachings. Therefore, within the scope of the appended claims, the present invention may be practiced other than as specifically described.
The present application claims priority to and all the benefits of U.S. Provisional Patent Application No. 62/020,647, filed on Jul. 3, 2014, which is hereby expressly incorporated herein by reference in its entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/US2015/038302 | 6/29/2015 | WO | 00 |
Number | Date | Country | |
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62020647 | Jul 2014 | US |