Light transmission panels, retaining clip and a combination thereof
A glazing panel system is provided with improved glazing panels, retention clips and/or U-shaped connectors. The retention clip may engage the glazing panels at locations lower than top ends of the upstanding seam flanges. In one embodiment, an internal U-shaped connector is positioned to engage the seam flanges while an external U-shaped connector covers the internal connector and the seam between adjacent glazing panels. The glazing panels may be formed with pockets adjacent the base of the upstanding seam flanges to receive a portion of the retention clip to apply retention forces at locations below the upper ends of the seam flanges. The retention clips may be formed with an upper transverse portion that is movable relative to the base portion of the clip to accommodate panel expansion and contraction. Also, a thicker plate or portion may be provided at a top flange for the retention clip to provide increased resistance to uplift loads trying to bend the flange.
1. A panel assembly comprising:
two adjacent panels;
a connector engaging the panels so as to hold ends of the panels together;
a clip disposed at least in part between the two adjacent panels, the clip including a base portion, a cross member, and a stem extending between the base portion and the cross member, the stem having a first surface for engagement with one of the two adjacent panels and having a second surface for engagement with the other of the two adjacent panels; and
an unobstructed space formed between the ends of the two adjacent panels, the ends configured so as to allow expansion and contraction of the panels;
wherein each panel includes an opening for receiving a portion of the cross member therein;
wherein the stem is disposed in the seam formed between the two panels, the unobstructed space formed in the seam above the cross member.
2. The panel assembly of claim 1 wherein the connector has a transversely extending portion joining two outer depending legs and wherein each of the panels has an upstanding flange, the outer depending legs engaging the upstanding flanges.
3. The panel assembly of claim 1 wherein the clip cross member extends perpendicular to ends of the panels into the openings.
4. The panel assembly of claim 2 wherein each connector leg includes a gripping surface for engagement with a corresponding gripping surface of the upstanding flanges.
5. The panel assembly of claim 4 wherein the gripping surfaces are toothed surfaces.
6. The panel system of claim 1 further comprising a fastener extending through a portion of the clip for securing the clip to a support member.
7. The panel system of claim 2 wherein the space is disposed, at least in part, between inner end walls of the upstanding flanges.
8. The panel system of claim 1 wherein the two adjacent panels are each light transmitting panels.
9. The panel system of claim 1 wherein the two adjacent panels are each plastic panels.
10. The panel system of claim 1 wherein the two adjacent panels are each configured for lateral movement.
11. The panel system of claim 1 wherein the stem engages each of the two adjacent panels along its length extending between the base portion of the clip to the cross member of the clip.
12. The panel system of claim 1 wherein the clip defines an I-shaped cross-section with the base portion and the cross member defining horizontal portions and the stem defining a vertical portion connecting the horizontal portions.
13. The panel system of claim 2 wherein the clip is disposed entirely beneath the upstanding flanges such that the upstanding flanges define at least a portion of the space between them.