Low-Profile Roofing Fastener for Flush Solar Panel Mounting
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Solution Overview
Problem
Conventional roofing screws with protruding heads pose challenges in roof aesthetics, cost, weight, and limited solar panel density due to the need for sub-frames, which are undesirable for modern roof designs and reduce usable roof area.
Innovation Solution
A low-profile roofing fastener with a self-drilling tip and a domed head that sits flush with the substrate, allowing for direct mounting of solar panels without sub-frames, using a threaded shank with buttress or symmetric threads and a conical drilling tip for secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional roofing screws with protruding heads are used, then the fastening function is achieved, but the aesthetic appearance deteriorates and solar panel installation density is reduced
Solution Approach 1:
The fastener head is designed with a low profile that sits substantially flush with the substrate surface, transitioning from a protruding three-dimensional form to a flattened configuration. This dimensional change eliminates the need for sub-frames, allowing solar panels to be installed directly against the substrate at higher density while maintaining aesthetic appearance.
Solution Approach 2:
The invention extracts and eliminates the sub-frame component from the solar panel mounting system. By designing the fastener head to be low-profile and flush with the substrate, the intermediate sub-frame structure is removed entirely, enabling direct mounting of solar panels to the substrate and increasing installation density.
2Ease of operation
If sub-frames are used to support solar panels, then the panels can be mounted, but the cost and weight increase
Solution Approach 1:
The sub-frame component is completely extracted from the mounting system. The low-profile fastener head design enables solar panels to be mounted directly to the substrate without the intermediate sub-frame structure, reducing the overall weight of the mounting system while maintaining mounting capability.
Solution Approach 2:
The fastener head and substrate mounting function are merged into a single integrated solution. The low-profile head design combines the fastening function with the surface-flush requirement, eliminating the need for separate sub-frame structures and reducing overall system weight.
3Ease of operation
If sub-frames are used to support solar panels, then the panels can be installed, but the aesthetic appearance and usable roof area deteriorate
Solution Approach 1:
The sub-frame structure is extracted from the mounting system, allowing solar panels to be installed directly against the substrate. This eliminates the space-consuming intermediate structure and maximizes the usable roof surface area while maintaining installation capability.
Solution Approach 2:
The fastener head is transformed from a protruding form to a flush-mounted form, changing the dimensional relationship between the fastener and substrate. This allows solar panels to sit directly against the substrate surface, maximizing the usable roof area and improving aesthetic appearance.
Data Source
AI summary
A fastener for securing a substrate to an underlying roof structure, comprising a head and an elongate shank extending therefrom, the shank having a threaded section and a drilling tip, with the drilling tip being configured to enable the fastener to be self-drilling, and wherein the head is configured to be arranged substantially flush with the substrate when the substrate is secured to the roof structure by the fastener.