Rail-Free Roof Solar Mounting for Variable Rafter Spacing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sloped roof solar panel mounting systems require the use of rails or struts, which are costly, inefficient, and do not accommodate varying rafter spacings, limiting flexibility in module selection and installation.
Innovation Solution
A universal sloped roof solar panel mounting system that attaches directly to rafters using a base assembly and clamp assembly with adjustable components, eliminating the need for rails or struts, and accommodating various solar module thicknesses and orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rails or struts are used in mounting systems, then structural strength is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes rails and struts from the mounting system, extracting these complex structural elements and replacing them with direct rafter attachment components. The clamp assembly attaches directly to individual rafters without requiring continuous rail structures, thereby reducing device complexity while maintaining structural strength through direct load transfer to the roof framework.
Solution Approach 2:
The mounting system is segmented into independent clamp assemblies that attach to individual rafters rather than using continuous rails. Each clamp assembly operates independently, allowing the system to be divided into discrete units that are simpler to manufacture and install, while still providing adequate structural support through distributed attachment points.
2Strength
If rails or struts are used in mounting systems, then structural strength is improved, but manufacturing cost and shipping cost increase
Solution Approach 1:
The patent eliminates rails and struts from the system, removing these expensive manufactured components. The base assembly and clamp assembly use simpler materials and construction methods, reducing manufacturing complexity and cost while maintaining adequate structural strength through direct attachment to roof rafters.
Solution Approach 2:
The mounting components are designed to be simpler, more economical elements that can be manufactured at lower cost. Rather than using expensive, precision-formed rails and struts, the system employs simpler base and clamp assemblies that are cheaper to produce and install, accepting that these components may need replacement rather than designing for extreme durability.
3Manufacturing precision
If fixed spacing mounting systems are used, then manufacturing precision is improved, but adaptability to varying rafter spacings deteriorates
Solution Approach 1:
The base assembly incorporates adjustable positioning mechanisms that allow the clamp assembly to be positioned at various locations along the base. This dynamic adjustability enables the system to accommodate different rafter spacings while maintaining proper alignment and attachment, resolving the contradiction between fixed manufacturing precision and variable field adaptability.
Solution Approach 2:
The base assembly is designed as a universal component that can accommodate multiple rafter spacing configurations. The adjustable clamp positioning allows a single base assembly design to work with various roof structures, making the system multi-functional and adaptable to different building codes and roof designs without requiring custom-manufactured components.
4Manufacturing precision
If custom profile rails are used, then module compatibility is improved, but adaptability to different solar modules deteriorates
Solution Approach 1:
The clamp assembly is designed with universal compatibility features that allow it to work with various solar module types and thicknesses. Rather than requiring custom profile rails for each module type, the adjustable clamp mechanism can accommodate different module profiles, enabling installers to choose from a wider range of solar modules without being constrained by proprietary mounting system requirements.
Data Source
AI summary
A universal mounting system for supporting a plurality of photovoltaic modules on a sloped support surface, such as a sloped roof, is disclosed herein. The universal mounting system may include one or more support surface attachment devices, each support surface attachment device configured to attach one or more photovoltaic modules to a support surface; and one or more module coupling devices, each module coupling device configured to couple a plurality of photovoltaic modules to one another.