Collapsible Kayak Floorboard Layout for Rigidity and Compact Folding
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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 leads to weak points and the need for additional structural reinforcements, and often require separate removal of seats for 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 additional bulkheads or 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 deteriorate due to weak points
Solution Approach 1:
The floorboard is divided into multiple segments that fold relative to each other along transverse creases, allowing the kayak to collapse while maintaining structural integrity through the segmented design that prevents weak points
Solution Approach 2:
The floorboard creases are oriented in the athwartships (transverse) direction rather than longitudinally, changing the dimension of folding to maintain longitudinal structural rigidity while still enabling collapse for storage
2Strength
If additional bulkheads or coverings are added to maintain rigidity, then structural strength improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the need for additional bulkheads or coverings by integrating the structural reinforcement function directly into the floorboard design through transverse creases, simplifying the overall structure while maintaining rigidity
Solution Approach 2:
The floorboard serves multiple functions: it provides structural reinforcement, enables collapse for storage, and eliminates the need for separate bulkheads or coverings, reducing device complexity while maintaining strength
3Volume of moving object
If the floorboard is made removable and foldable, then ease of storage improves, but manufacturing precision requirements increase
Solution Approach 1:
The creases are pre-formed during manufacturing at precise locations and angles, ensuring proper alignment when the floorboard is assembled and folded, thereby reducing the precision requirements during final assembly while maintaining storage compactness
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 without extra coverings, reducing weight and manufacturing costs.
Implementation Method 1
a continuous sheet forming a single-piece hull having a bow portion, a midship portion, and a stern portion, the hull including a plurality of crease lines along which the hull is foldable
Implementation Method 2
a foldable floorboard disposed in the midship portion of the hull, the floorboard being configured to fold only at one or more creases oriented in respective athwartships directions
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.