PV Module Mounting Rails with Hooked Mechanisms for Toolless Attachment
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Solution Overview
Problem
The installation of PV modules to mounting rails in solar installations is time-consuming and requires manual positioning, often necessitating multiple fasteners and multiple installers to secure the modules in place.
Innovation Solution
The use of mounting rails with hooked mechanisms and attachment features that allow for toolless and tooled processes to couple PV modules, reducing the complexity and time required for installation by eliminating the need for manual positioning and fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fasteners (nuts, bolts, clips) are used to couple PV modules to mounting rails, then the connection strength and reliability are improved, but the installation time and complexity increase significantly
Solution Approach 1:
The mounting rail is segmented into different functional zones: hooked mechanisms at certain positions for toolless attachment and attachment features with openings at other positions for fastener-based coupling. This segmentation allows different coupling methods to be applied to different PV modules along the same rail, optimizing both speed and reliability for different positions.
Solution Approach 2:
Different portions of the mounting rail have different coupling characteristics. Some portions feature hooked mechanisms that provide automatic mechanical engagement for rapid attachment, while other portions have attachment features with openings designed for traditional fasteners. This local differentiation of coupling quality allows the system to balance installation speed and connection strength across the entire solar installation.
2Reliability
If multiple fasteners are used to secure PV modules to mounting rails, then the connection reliability is improved, but the device complexity and installation difficulty increase
Solution Approach 1:
The mounting rail structure is divided into distinct functional segments: hooked mechanisms for automatic engagement and attachment features with openings for fastener coupling. This segmentation reduces overall system complexity by separating the functions of rapid attachment and secure fastening, allowing installers to choose the appropriate mechanism for each PV module position.
Solution Approach 2:
The hooked mechanisms are designed to automatically engage with PV module frames through a self-service mechanism that requires no additional fasteners or tools. The hook structure itself provides both the attachment feature and the coupling mechanism, eliminating the need for separate fasteners and reducing installation complexity for those positions.
3Manufacturing precision
If manual positioning of PV modules is required during installation, then the positioning precision is improved, but the labor requirements and installation time increase
Solution Approach 1:
The hooked mechanisms are designed to automatically align and engage PV modules at the same horizontal level along the mounting rail. This equipotential design allows multiple PV modules to be installed at consistent heights without requiring manual positioning adjustments, as the hook structures naturally guide the modules into proper alignment during the attachment process.
Solution Approach 2:
The mounting rail structure with hooked mechanisms provides self-aligning features that automatically position PV modules correctly during attachment. The geometry of the hooks and their interaction with the module frames creates natural alignment points, eliminating the need for installers to manually position and hold modules while others secure fasteners.
4Strength
If traditional fastener-based coupling is used, then the connection strength is improved, but the ease of operation and installation simplicity decrease
Solution Approach 1:
The mounting rail incorporates both hooked mechanisms for toolless attachment and attachment features with openings for fastener coupling. This segmentation allows the system to provide simple, rapid installation at certain positions while maintaining strong, reliable connections at other positions, balancing ease of operation with connection strength across the entire installation.
Solution Approach 2:
Instead of requiring all connections to use traditional fasteners, the design inverts the approach by using hooked mechanisms that automatically engage and secure PV modules without fasteners. This inversion of the conventional fastening approach simplifies installation for those positions while the attachment features with openings provide traditional strong connections where needed.
Data Source
AI summary
A mounting rail may be configured to couple to a first photovoltaic (PV) module and a second PV module. The mounting rail may include a hooked mechanism and an attachment feature. The hooked mechanism may at least partially define an aperture configured to receive a portion of a first module frame associated with the first PV module. The hooked mechanism may also physically engage with a surface of the first module frame to couple the first module frame to the mounting rail and to prevent the first module frame from unintentionally uncoupling from the mounting rail. The attachment feature may interface with a second module frame associated with the second PV module to couple the second module frame to the mounting rail.