Tonneau Cover Cable Tensioning Mechanism
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Solution Overview
Problem
Existing tonneau covers with Velcro connections face issues with maintaining proper tension over time due to dirt and debris accumulation, leading to reduced effectiveness and the need for manual adjustment.
Innovation Solution
A tonneau cover with a cable system that includes a spring-loaded tensioning mechanism, where cables are integrated into pockets along the cover and connected to rails, providing automatic and consistent cross-car tension without requiring operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a Velcro connection is used to connect the tonneau cover to the side rails, then the tonneau cover can be easily removed and rolled up for stowage, but the Velcro connection loses effectiveness over time due to dirt and debris accumulation, reducing its ability to maintain proper tension
Solution Approach 1:
A cable system is introduced as an intermediary between the tonneau cover and the side rails to maintain tension. The cable runs through pockets in the cover and connects to adjustment mechanisms on the rails, serving as a mediator that provides reliable tension maintenance without relying on direct Velcro contact, thereby resolving the contradiction between ease of operation and reliability of tension maintenance
2Reliability
If manual adjustment of the Velcro connection is performed to compensate for stretching, then proper tension can be restored temporarily, but the adjustment process requires operator intervention and the Velcro connection still degrades due to dirt accumulation
Solution Approach 1:
The cable system incorporates self-adjusting mechanisms that automatically compensate for cover stretching and tension loss over time. The system includes adjustment mechanisms that can be easily operated without requiring disassembly or complex manual intervention, allowing the cover to self-regulate its tension and maintain proper fit throughout its service life
3Reliability
If a cable tensioning system is implemented to provide consistent tension, then proper fit and tension are maintained over time, but the device complexity increases with additional components
Solution Approach 1:
The cable system serves multiple functions simultaneously: it maintains tension on the tonneau cover, provides adjustment capability for stretching compensation, and integrates with the existing rail structure. The cable runs through pockets that are part of the cover construction, and the adjustment mechanisms utilize the existing rail mounting points, thereby achieving reliable tension maintenance without proportionally increasing overall system complexity
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 system maintains consistent tension over the life of the tonneau cover, ensuring proper fit and preventing moisture and debris entry, while allowing easy conversion between stowed and deployed positions without additional installation steps.
Implementation Method 1
The rear rail includes at least one channel which receives a spring, and the spring is connected to the cable such that as the tonneau cover is placed in the deployed position, the spring applies tension to the cable
Data Source
AI summary
The present invention is directed to a tonneau cover incorporating a cable system which generates the proper amount of cross-car tension, and still provides for the tonneau cover to be rolled up and stowed when not in use. The present invention is directed to a tonneau cover for a vehicle that is moveable between a stowed position and a deployed position. The tonneau cover has at least one pocket extending along a side of the tonneau cover, and at least one cable disposed in the pocket such that a first end of the cable extends out of a first end of the pocket, and a second end of the cable extends out of a second end of the pocket such that when the tonneau cover is in the deployed position, the cable applies tension to the tonneau cover.