Tri-Fold Collapsible Kayak With Permanently Fixed Floorboard
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Solution Overview
Problem
Existing collapsible watercraft designs face challenges in balancing ease of assembly, robustness, and suitability for various uses, particularly in terms of storage and transportation convenience.
Innovation Solution
A collapsible kayak design featuring a single-piece hull with predefined creases and a tri-fold configuration, including a floorboard permanently fixed to gunwales, allowing the bow and stern portions to overlap the midship section when collapsed, with integrated bulkheads and fairings for structural support and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a collapsible watercraft is designed to be foldable for easy transportation and storage, then the ease of operation and storage convenience are improved, but the structural integrity and robustness may deteriorate
Solution Approach 1:
The hull is divided into multiple sections with predefined crease lines that allow controlled folding at specific locations. This segmentation enables the watercraft to collapse into a compact configuration for easy storage and transportation while maintaining structural integrity when deployed, as the crease lines are strategically positioned to preserve overall hull strength.
Solution Approach 2:
The crease lines are pre-formed during manufacturing to indicate exactly where the hull should fold. This preliminary action ensures that when the watercraft is collapsed, it follows a predetermined folding pattern that maintains structural integrity. The pre-formed creases guide the folding process to avoid compromising the hull's strength while enabling easy collapse.
2Ease of operation
If a collapsible watercraft uses a tri-fold configuration with permanently fixed floorboard, then the ease of operation and storage convenience are improved, but the device complexity increases
Solution Approach 1:
The floorboard is permanently fixed to the gunwales, merging these components into a single integrated structure. This reduces the number of separate parts that need to be assembled and eliminates the need for additional fasteners or connections, thereby simplifying the overall assembly process while maintaining the tri-fold configuration's compactness.
Solution Approach 2:
The permanently fixed floorboard serves multiple functions: it provides structural support, creates a stable base for passengers, and acts as part of the folding mechanism by being integrated with the gunwales. This multi-functionality reduces the need for separate components, simplifying the device while maintaining ease of operation and compact storage capability.
3Volume of stationary object
If the bow and stern portions are made foldable to overlap the midship portion, then the storage volume is reduced for convenient transportation, but the manufacturing precision requirements increase
Solution Approach 1:
The crease lines are pre-formed during the hull manufacturing process, establishing precise fold locations before the watercraft is put into service. This preliminary action ensures that the bow and stern portions fold accurately over the midship portion, achieving compact storage volume while managing manufacturing precision requirements through standardized crease line formation.
Solution Approach 2:
The tri-fold configuration allows the bow and stern portions to nest over the midship portion when collapsed, creating a compact package. This nesting arrangement optimizes storage volume by having the foldable sections overlap and contain one another, while the predefined crease lines ensure precise alignment during the nesting process.
Data Source
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AI summary
A collapsible kayak may include a single-piece hull including a plurality of crease lines along which the hull is foldable. A floorboard lines a midship portion of the hull between a bow portion and a stern portion, and the floorboard includes a base and a pair of outboard walls permanently fixed at distal ends to port and starboard gunwales of the hull. The bow, stern, and midship portions are configured as a tri-fold, such that the bow portion and the stern portion of the kayak are foldable toward each other to overlap the midship portion of the hull when collapsed.