Photovoltaic module deflection limiter
A deflection pad may include a body. The body may include a recess to accommodate a fastener configured to attach the deflection pad to a support structure. The base of the deflection pad may include a bottom surface configured to engage a surface of the support structure. The deflection pad may be included in a system that includes a torsion beam and one or more support racks to which multiple PV modules may be attached, where the support are racks attached to the torsion beam. One or more deflection pads may be positioned between the PV modules and the support rack so as to cushion impact.
1. A deflection pad suitable for cushioning impact between a photovoltaic (PV) module and a support structure, the deflection pad comprising:
a body including at least two peaks, the at least two peaks together defining a top surface configured to contact a surface of the PV module;
a recess disposed between the two peaks, the recess sized to accommodate a fastener such that when deployed, the fastener is below the top surface; and
arms projecting from the body in a direction generally opposite the two peaks, the arms extending below a bottom surface of the body such that they are configured to cover at least a portion of exterior lateral sides of the support structure.
2. The deflection pad of claim 1 , further comprising a tab disposed on an end of each of the arms, the tabs extending inwardly from each of the arms and are configured to engage exterior lateral sides of the support structure.
3. The deflection pad of claim 2 , wherein top portions of the arms taper inward toward the recess.
4. The deflection pad of claim 1 , wherein a shape of the bottom surface of the body, the recess, and the arms corresponds to a top surface and at least portions of exterior lateral sides of the support structure.
5. The deflection pad of claim 1 , wherein the body is constructed of an elastically compressible material.
6. The deflection pad of claim 1 , wherein the body is constructed of one of rubber, polycarbonate, polyvinyl chloride, polythene, or polyethylene.
7. The deflection pad of claim 1 , wherein the body is longer in a first direction along a length of the peaks than in a second direction across the two peaks and the recess.
8. The deflection pad of claim 1 , wherein inner surfaces of the recess taper outward toward the arms.
9. The deflection pad of claim 1 , wherein the at least two peaks are wider at their tops than at their bottoms.
10. The deflection pad of claim 1 , wherein the arms are deformable and are configured to create an inward spring force as a distance between the arms is increased.