Collapsible Kayak Floorboard Structure for Rigid Tri-Fold Storage
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Solution Overview
Problem
Existing foldable kayaks face challenges in maintaining structural rigidity and stability, particularly when folding the floorboard in a longitudinal direction, which can lead to weak points and the need for additional structural reinforcements, and often require separate removal of seats before folding.
Innovation Solution
A collapsible kayak design featuring a foldable floorboard oriented athwartships, a V-shaped transom, and a removable seat assembly that folds into a compact configuration, enhancing rigidity and stability without bulkheads and extra coverings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the floorboard is folded in a longitudinal direction, then the kayak can be collapsed for storage, but structural rigidity and stability are compromised
Solution Approach 1:
The floorboard is divided into multiple segments that can fold independently along transverse creases. This segmentation allows the floorboard to collapse with the hull for compact storage while each segment maintains structural integrity. The segmented design prevents the creation of weak points that would occur with a single longitudinal fold, as each segment can be reinforced independently and the folding action occurs along predetermined creases rather than compromising the overall structural rigidity.
2Stability of the object's composition
If additional structural reinforcements are added to maintain rigidity, then structural stability is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The floorboard is integrated directly into the hull structure, eliminating the need for separate bulkheads or additional reinforcing elements. The floorboard itself is designed with sufficient structural capacity to maintain rigidity and stability when folded along transverse creases. This merging of the floorboard with the hull structure reduces device complexity by eliminating redundant components while maintaining structural stability through the optimized floorboard design.
Solution Approach 2:
The floorboard incorporates localized reinforcement at specific areas where structural strength is needed, such as at the creases and support points, rather than adding uniform reinforcement throughout. This local quality approach maintains structural stability at critical points while minimizing overall device complexity and manufacturing costs by avoiding unnecessary reinforcements in areas that do not require additional strength.
3Ease of operation
If the floorboard is made removable, then ease of assembly and storage is improved, but structural integrity may be compromised
Solution Approach 1:
The floorboard is designed as a removable segment that can be easily installed and removed from the hull. The segmentation allows for simple assembly operations while the floorboard itself is constructed with sufficient structural strength to maintain integrity when in place. The removable design is achieved through straightforward attachment mechanisms at the edges while the main body of the floorboard remains structurally sound.
4Adaptability or versatility
If crease lines are added for folding, then collapsibility is improved, but structural weakness at fold points increases
Solution Approach 1:
The crease lines are pre-formed during manufacturing with proper folding geometry and reinforcement built into the crease structure itself. This preliminary action ensures that when the kayak is collapsed, the folding occurs along predetermined paths that maintain structural reliability. The creases are designed with appropriate radius and reinforcement to prevent structural weakness, eliminating the need for additional repairs or reinforcements after folding operations.
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 design provides enhanced structural rigidity, simplified assembly, and compact storage while maintaining watertightness, reducing weight and manufacturing costs, and eliminating the need for additional structural reinforcements.
Implementation Method 1
a continuous sheet forming a hull having a bow portion, a midship portion, and a stern portion, the hull including a plurality of living hinges along which the hull is foldable
Data Source
AI summary
A collapsible kayak may include a single-piece hull including a plurality of crease lines along which the hull is foldable. A removable floorboard lines a midship portion of the hull between a bow portion and a stern portion, the floorboard including a seat assembly and configured to be releasably retained by a pair of outboard walls permanently fixed at port and starboard sides of the cockpit. The stern portion of the hull is permanently folded in a V-shaped (AKA swallowtail) configuration to form a closed transom of the kayak. 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.