Kayak Handling System Roller Assembly Design
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Solution Overview
Problem
Existing kayak handling systems do not efficiently assist users in lifting and removing kayaks or other objects onto and from a vehicle's roof in a safe, rapid, and economical manner.
Innovation Solution
A kayak handling system comprising a roof-mounted supporting device with a hitch, L-shaped member, horizontal and vertical extension pieces, and a roller assembly with primary and secondary rollers, allowing the kayak's keel to be positioned on rollers and easily loaded onto a vehicle's roof, with coupling pins for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a kayak handling system is designed to assist users in lifting kayaks onto a vehicle roof, then the ease of operation is improved, but the device complexity increases due to multiple components including L-shaped members, extension pieces, and roller assemblies
Solution Approach 1:
The handling system is divided into separate functional components: L-shaped members for attachment to vehicle roof rails, extension pieces for adjusting reach and positioning, and roller assemblies for facilitating kayak movement. Each component can be independently manufactured, assembled, and adjusted to suit different vehicle and kayak configurations, making the overall system easier to operate while managing complexity through modular design
Solution Approach 2:
The system incorporates movable and adjustable elements including extension pieces that can be positioned at different lengths, rollers that rotate to facilitate kayak sliding, and attachment mechanisms that allow for flexible positioning on the vehicle roof. This dynamic capability enables the system to adapt to various kayak sizes and vehicle types, improving ease of operation without requiring a completely new design for each application
2Reliability
If a roller assembly with multiple rollers and support structures is implemented, then the reliability of kayak support is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The roller assembly applies support and friction locally at specific contact points along the kayak keel. Rather than requiring continuous support structures, the system uses strategically positioned rollers that provide sufficient stability and support only where needed. This localized approach maintains reliability while reducing the overall amount of material and structural complexity required
Solution Approach 2:
Multiple functional elements are combined into integrated components: the L-shaped members serve both as attachment structures and as support beams; the extension pieces provide both structural linkage and positioning adjustment; the roller assembly integrates multiple rollers, spacers, and support elements into a single modular unit. This merging reduces the total number of separate parts while maintaining or improving reliability through coordinated functionality
3Productivity
If a comprehensive handling system with multiple components is designed, then the productivity of kayak loading is improved, but the ease of manufacture decreases due to multiple parts requiring assembly
Solution Approach 1:
The system is segmented into modular components that can be manufactured independently using standard fabrication processes. Each L-shaped member, extension piece, and roller assembly can be produced separately and then assembled, allowing for specialized manufacturing techniques to be applied to each component type while maintaining overall system functionality. This segmentation improves productivity by enabling parallel manufacturing of components
Solution Approach 2:
The L-shaped members and extension pieces are designed with universal attachment features that can accommodate different kayak types and vehicle roof configurations. The standardized interfaces and apertures allow the same basic components to serve multiple functions and be used across different applications, simplifying manufacturing by reducing the variety of unique parts that must be produced
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
Enables safe, rapid, and economical loading and unloading of kayaks by providing a durable, reliable, and cost-effective solution that minimizes labor and material costs, making the system economically accessible to consumers.
Implementation Method 1
The shaft has an axis. The axis of the shaft is in a horizontal plane closer to the roof of the vehicle than to the hitch. The roller assembly includes primary rollers. The primary rollers are rotatably supported on the shaft.
Data Source
AI summary
An L-shaped member has a forwardly extending horizontal leg and an upwardly extending vertical leg. The horizontal leg has a forward end removably couplable with respect to a hitch of a vehicle. The vertical leg has an upper end. A roller assembly includes a U-shaped support. The U-shaped support has a horizontal central portion coupled to the upper end of the vertical leg. The U-shaped support has upwardly extending vertical end legs and a shaft rotatably supported by the end legs. The roller assembly includes primary rollers rotatably supported on the shaft. A spacer is provided between the primary rollers. A bottom of an object is positionable upon the primary rollers and pushed into position upon a roof of the vehicle.