Tonneau Cover Cable Tensioning System Eliminates Side Rails
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Solution Overview
Problem
Conventional tonneau covers for pickup trucks require side rails for mounting and tensioning, leading to increased height, weight, and complexity, as well as a non-cohesive look, which existing 'low profile' designs do not fully address.
Innovation Solution
A tonneau cover assembly using a cable tensioning system that runs along the sides of the cover, eliminating the need for side rails by providing tension and location through cables, with a rear mounting feature and integrated latching system, and optionally including a boot cover for protection when stowed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If side rails are used for mounting and tensioning the tonneau cover, then the cover can be properly tensioned and sealed, but the vehicle height increases, weight increases, and complexity increases
Solution Approach 1:
The patent removes the side rails entirely from the tonneau cover system. Instead of using traditional side rails for mounting and tensioning, the invention uses a cable-based tensioning system that attaches directly to the cover and bed, eliminating the complex side rail structure while maintaining sealing effectiveness.
Solution Approach 2:
The patent replaces the mechanical side rail structure with a cable-based tensioning system. The cables provide the necessary tensioning force through a different mechanical approach, using tension members rather than rigid rail structures, thereby reducing complexity while achieving the same sealing function.
2Reliability
If side rails are installed to provide mounting and tensioning, then the cover can be secured, but additional weight is added to the vehicle
Solution Approach 1:
The patent extracts and removes the heavy side rail components from the system. By eliminating these substantial metal structures and replacing them with lighter cable tensioning elements, the overall weight of the tonneau cover assembly is reduced while maintaining cover security through the cable tensioning mechanism.
3Reliability
If conventional side rails are used for mounting, then the cover can be tensioned, but the vehicle appearance becomes non-cohesive
Solution Approach 1:
The patent removes the visually prominent side rails that disrupt vehicle aesthetics. By eliminating these extraneous structural elements and using a more streamlined cable-based system, the vehicle maintains a cleaner, more cohesive appearance while the tensioning capability is preserved through the cable mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cable tensioning system effectively seals the tonneau cover without side rails, reducing weight and complexity while maintaining a cohesive look, and allowing for easy installation without drilling, enhancing the overall functionality and aesthetics.
Implementation Method 1
The cable tensioning system effectively seals the tonneau cover without side rails, reducing weight and complexity while maintaining a cohesive look
Data Source
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AI summary
A tonneau cover assembly with a top cover connected to a cable tensioning system that eliminates the need for side rails to both locate and tension the top cover. The cable tension system seals out environmental elements and holds the tonneau cover and fabric management bows of the assembly in place. The assembly includes a front attachment assembly and rear attachment assembly connected to cables, where the front attachment provides a forward mounting location and seals a front bow to the vehicle. The rear attachment assembly holds the top cover in a closed tensioned state until the cover is opened by an operator. The tonneau cover assembly reduces weight and complexity, while eliminating the need for side rails.