Apparatus for securing and covering a clamping device for solar panel modules

Abstract

The present invention is directed to a covering for a clamping assembly used to connect and ground solar panel modules to a mounting rail. The covering comprises a sleeve including an outer cover for connecting to the solar panel module and a connector shaped to be contained within the outer cover and connected to the outer cover through two or more flanges. The connector has an opening there through to receive a female member of the clamping assembly.

Claims

1. A clamping assembly, the assembly comprising: a. an electrically conductive solar panel frame comprising a surface treatment layer; b. a rail guide comprising a channel further comprising a surface treatment layer; c. an electrically conductive clamp comprising: i. a nut having an enlarged top flange portion comprising a bottom surface, the bottom surface defining a first raised portion configured to engage the surface treatment layer of the solar panel frame, ii. a fastener having an enlarged bottom head portion comprising a top surface defining a second raised portion configured to penetrate the surface treatment layer of the channel of the rail guide, and iii. a connecting portion between the top flange portion and the bottom head portion comprising a first part comprising a threaded shaft of the fastener rotatably engaging a second part comprising a threaded cylindrical portion of the nut, whereby the rotation of the first part in threaded relation to the second part adjusts a distance between the top flange portion and the bottom head portion; and d. an electrically conductive sleeve, the sleeve having an outer cover having a longitudinally-extending sidewall opening, and a connector concentrically disposed within and coupled to the outer cover, the connector having a longitudinally-extending sidewall opening aligned with the sidewall opening of the outer cover and forming an inner surface comprised of attached resilient support members configured to removably attach the sleeve to the clamping assembly connecting portion via the sidewall openings by coupling in a direction perpendicular to the connecting portion, an upper end of the sleeve engaging the bottom surface of the top flange portion, a lower end of the sleeve configured to engage the rail guide, and wherein the first raised portion penetrates the upper end of the sleeve.

2. The clamping assembly of claim 1 wherein a clockwise rotation of the first part of the connecting portion in relation to the second part of the connecting portion provides a clamping force upon the solar panel frame and the sleeve.

3. The clamping assembly of claim 2 wherein the sleeve resists the clamping force.

4. The clamping assembly of claim 1 wherein the solar panel frame occupies a first side of the clamping assembly.

5. The clamping assembly of claim 1 wherein the sleeve occupies a second side of the clamping assembly opposite the solar panel frame.

6. The clamping assembly of claim 1 wherein an electrical bond is created between the solar panel frame and the rail guide.

7. The clamping assembly of claim 6 wherein the channel comprises an upper opening portion and a lower opening portion the lower opening portion being larger than the upper opening portion.

8. The clamping assembly of claim 7 wherein the bottom head portion comprises a length that is larger than its width.

9. The clamping assembly of claim 8 wherein the bottom head portion width is smaller than the upper opening portion.

10. The clamping assembly of claim 1 wherein the first part of the connecting portion is integral with the bottom head portion.

11. The clamping assembly of claim 1 wherein the second part of the connecting portion is integral with the top flange portion.

12. The clamping assembly of claim 1 wherein a length of the sleeve and a height of the solar panel frame are equal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) A more complete understanding of the present invention may be derived by referring to the detailed description and claims when considered in connection with the following illustrative figures. In the following figures, like reference numbers refer to similar elements and steps throughout the figures.

(2) FIG. 1 illustrates a top perspective view of an exemplary clamp assembly.

(3) FIG. 2 illustrates a bottom perspective view of the clamp assembly shown in FIG. 1.

(4) FIG. 3 illustrates a rear perspective view of an exemplary clamp assembly sleeve.

(5) FIG. 4 illustrates a front perspective view of the clamp assembly sleeve in FIG. 3.

(6) FIG. 5 illustrates a perspective view of a pre-assembled combination of the clamp assembly sleeve and the clamp assembly as shown in FIGS. 1-4.

(7) FIGS. 6A and 6B illustrate side and front perspective views of the assembled clamp assembly and clamp assembly sleeve.

(8) FIG. 7 illustrates a front perspective view of a fully assembled clamp assembly and clamp assembly sleeve in use while securing a solar panel module to a rail guide.

(9) FIG. 8 illustrates a cross-section view of the assembled product shown in FIG. 7.

DETAILED DESCRIPTION OF THE INVENTION

(10) In the following description, and for the purposes of explanation, numerous specific details are provided to thoroughly understand the various aspects of the invention. It will be understood, however, by those skilled in the relevant arts, that the present invention may be practiced without these specific details. In other instances, known structures and devices are shown or discussed more generally to avoid obscuring the invention. In many cases, a description of the operation is sufficient to enable one to implement the various forms of the invention, particularly when the operation is to be implemented in software. It should be noted that there are many different and alternative configurations, devices and technologies to which the disclosed embodiments may be applied. The full scope of the invention is not limited to the example(s) that are described below.

(11) FIGS. 1 and 2 show top and bottom perspective views respectively of an exemplary embodiment of a clamp assembly 100. The clamp assembly 100 is the clamp described and disclosed in FIGS. 9-13 of the '606 Publication, although the present invention can also be used with a clamp assembly that utilizes an elongated female member similar to that described below. The clamping assembly 100 includes a male member 130 and an integrated female member 140. The integrated female member 140 is also referred to as a binding bolt and is typically cylindrically shaped. This exemplary clamp assembly in this embodiment is a rounded head mid-clamp clamping assembly 100 defines an integrated structure, such that all the elements of the female member are one piece. Together the members 130 and 140 define a fastener that is used to fix solar panel modules to a mounting rail/racking system.

(12) The male and female members, 130 and 140 are interlocking. The male member has an elongated male element defining a threaded shank 135 and an enlarged end defining a T-bolt end 110. The T-bolt end 110 includes at least one raised portion 120 that is designed for penetrating the surface treatment layer of the solar panel mounting rails and may also include a roller 180. In the embodiment shown, there are a plurality of raised portions 125 defining teeth, which create a pre-determined pattern. The pattern facilitates the penetration of the surface treatment layer of the rails by the male member 130 with only a pressure fit. Additionally, in the embodiment shown, the male member 130 is electrically conductive and made from electrically conductive material.

(13) Likewise, the entire female member 140 is also electrically conductive. The female member 140 defines an integrated member that includes a nut end 150, an annular ring 160 defining a piercing member 170. The nut end 150 is not limited to a conventional hexagonal nut and can comprise any drive type capable of advancing the female member 140 by hand or with a tool such as a torx or allen drive. The female member 140 includes an elongated female element 145 that is generally cylindrical and extends from the nut end 150. Each of the above elements are integrated as if they are a single unit with no movement with respect to one another, but alternatively the elongated female member 145 and the annular ring 160 can be separate elements as long as the annular ring 160 is free to move along the elongated female member 140.

(14) The elongated male element 130 has defines the threaded shank 135. The elongated female element 140 defines a sheath that is a cylindrical member and has internal threads which are functionally compatible with the external threads 135 (also shown in FIG. 10B of the '016 application. Thus, the above-described structure provides an adjustable interlocking fastener assembly for among other things mounting solar panel frames on support rails.

(15) The piercing member 170 includes washer with an annular ring 160 and a center opening. The center opening is sized and shaped to allow the elongated female member 140 passage through the center opening. Additionally, the annular ring 160 has a raised portion for penetrating a metal frame as described above. The raised portion defines the piercing member 170. The piercing member 170 has an edge sharp enough to pierce the surface treatment layer of the solar panel frame as best seen in FIG. 8.

(16) As shown in FIG. 7, the rounded head mid-clamp 100 is used to affix a solar panel frame 400 to a mounting rail 300. The rounded head mid-clamp 100 is typically used to clamp solar panel frames 400 side-by-side and the mounting rail 300 that runs under and perpendicular to the frames 400. The solar panel module includes a rear side 410 and a bottom 430. The male and female members, 130 and 140 respectively, are connected by loosely screwing the members together. The elongated portions 135 and 145 of the male and female portions respectively, thereby form a vertical member, which is vertically aligned with the channel 310 of mounting rail 300. The mounting rail 300 also includes a hollow center 320.

(17) As illustrated, the T-bolt end 110 is adjustable and rotates with respect to the female member 140. After alignment, the female member is pressed against the rear side 410 of the frame 400 with the penetrating member 170 piercing the surface treatment layers of frame 400. The T-bolt end 110 is turned so that it fits within the channel 310. Upon proper placement, so that the T-bolt end 110 fits squarely into the channel, the nut end 150 is tightened. The nut end 150 is tightened until raised portions or teeth 125 pierce the surface treatment layer inside the channel 310. The installer uses one hand to tighten the nut end 150, while the other hand is simply there to guide the fastener so that assembly retains its proper positions. It will be understood that since the female member has already been affixed to the top of the solar panel 400 as illustrated, the rounded head mid-clamp 100 can in most instances be installed one-handed.

(18) With particular reference to FIGS. 3 and 4, an exemplary sleeve 200 is shown. The sleeve 200 fits onto the clamp assembly 100 and serves as an end clamp for the clamping assembly 100. The sleeve 100 typically snaps into place over the binding bolt 140 on the clamping assembly 100. An exemplary embodiment of the sleeve 200 includes an outer cover 220 that is typically semi-cylindrical, a connector 210 that is also generally semi-cylindrically shaped, and a rear support 230. The diameter of the outer cover 220 is typically the same as the nut end 150 of the clamp assembly 100, but it could be less if desired. The connector 210 is integrated with the outer cover 220, and in an alternate embodiment, the outer cover 220 could serve as the connector 210 if it is desired that the outer cover 220 does not have to be the same or similar diameter to that of the nut end 150 or annular ring 160 of the nut end 150. In FIGS. 3 and 4, the connector 210 is joined by extensions perpendicularly coupled to the outer cover 220, but it is understood that the connector 210 could be fully integrated with the outer cover 220 as well. The connector 210 is typically made from a resilient material that and, as shown in FIG. 5, engages the binding bolt 140 by snapping in a generally perpendicular direction directly over it so that the binding bolt 140 fits within a portion of the connector 210 until it contacts the rear support 230. The rear support 230 extends perpendicularly from the rear of the connector 210. The rear support 230 is optional, but in the present invention utilizes it for tactile feedback to notify the installer that the binding bolt 140 has been fully inserted.

(19) FIGS. 6A and 6B show how the assembled sleeve 200 is connected to the clamp assembly 100. As shown, the sleeve 200 is pushed onto the binding bolt 140 until it snaps securely into place within the connector 210 and reaches the rear support 230. FIG. 7 shows the sleeve 200 when it is connected to the clamp assembly 100 and when the clamp assembly 100 has been used to secure the solar panel module 400 to the mounting rail 300. When fully assembled, the sleeve 200 enables the clamp assembly to act as an end clamp that secures the solar panel module 400 to the mounting rail on the perimeter of the solar panel array and keeps the extended male and female members hidden from view as shown in FIGS. 6B and 7.

(20) FIG. 8 shows a cross-sectional view of FIG. 7. The piercing member 170 also penetrates the surface layer of the sleeve 200. By doing so, the sleeve 200 is electrically bonded to the clamp assembly 100, the solar panel module 400, and the mounting rail 300.