Multi-Panel Tonneau Cover Upright Stack Stability
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Solution Overview
Problem
Conventional tonneau covers lack stability when folded upright, as they tend to collapse towards the truck cab due to their rectangular side profile, and they often obstruct the center high mount stop lamp, while also being cumbersome to fold and unfold, especially the last section which lacks space for easy handling.
Innovation Solution
A multi-panel tonneau cover design featuring a triangularly-shaped side profile when stacked, with wider bottom and narrower top sections, and a positive placement assembly to secure the folded stack on the bulkhead panel, along with a mechanical catch assembly for easy operation, and a multi-piece rail system for efficient shipping and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional tonneau covers are folded upright, then they can be stored compactly, but they lack stability and tend to collapse towards the truck cab due to their rectangular side profile
Solution Approach 1:
The patent applies asymmetry by transitioning from a conventional rectangular side profile to a triangular side profile when the cover is folded upright. The triangular configuration with a wider base and narrower top creates inherent geometric stability, preventing the cover from collapsing towards the truck cab while maintaining a compact folded state.
2Stability of the object's composition
If conventional tonneau covers are folded upright, then they can be stored compactly, but they obstruct the center high mount stop lamp
Solution Approach 1:
The patent resolves the lamp obstruction issue by changing the spatial arrangement of the folded cover from a rectangular profile that extends horizontally to a triangular profile that tapers upward. This dimensional reconfiguration allows the folded cover to clear the center high mount stop lamp while maintaining stability through its triangular geometry.
3Ease of operation
If conventional tonneau covers are folded and unfolded, then they can be opened and closed, but the process is cumbersome especially for the last section which lacks space for easy handling
Solution Approach 1:
The patent introduces an intermediary bulkhead panel that provides a support surface for the folded cover sections. This bulkhead acts as a mediator between the cover sections and the truck bed, providing leverage points and handling space that make folding and unfolding operations easier while reducing the overall complexity of the mechanism.
4Reliability
If full-length rails are used for tonneau cover, then the cover is securely mounted, but shipping carton size increases
Solution Approach 1:
The patent applies segmentation by dividing the rail system into separate modular components rather than using a single full-length rail. This allows the rails to be packaged in smaller shipping cartons while maintaining secure mounting capability through proper assembly of the segmented components at the installation location.
Data Source
AI summary
A tonneau cover for a bed of a truck is provided. The tonneau cover includes several improvements including but not limited to a bulkhead panel that is secured to the truck. A first cover panel section pivotably attached to the bulkhead panel. A first intermediate panel section pivotably attached to the first cover panel section and a second panel section. A second intermediate panel section pivotably attached to the second cover panel section and a third panel section. The first cover panel section, the second cover panel section, and the third cover panel section fold to form a stack of cover panel sections which is pivoted upright onto the bulkhead panel which supports the stack of cover panel sections in an upright position. The second intermediate panel section sets upon the bulkhead panel when the stack of cover panel sections is pivoted upright onto the bulkhead panel.