Two-Leg Collapsible Chair Structure With Harness Mounting
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Solution Overview
Problem
Existing collapsible chairs are cumbersome to expand and collapse, require numerous connections and coupling members, increasing manufacturing time and cost, and lack harness members for attachment to personal watercraft or jetski, making them difficult to store and use with various objects.
Innovation Solution
A collapsible chair design featuring two front legs, mid-cross bars, and harness members made from materials like steel, aluminum, and fabric, with a foldable structure and 'X' shaped midcross bars for stability, allowing easy attachment to personal watercraft and efficient storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional collapsible chairs use multiple elongate members and connections, then structural stability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple elongate members into fewer integrated members. Specifically, it uses two main elongate members that serve multiple functions: one member forms both a front leg and a back leg through strategic positioning of connection points, while the other member similarly serves dual purposes. This merging reduces the total number of connectors and coupling members needed, directly addressing the contradiction by maintaining stability through clever structural arrangement while reducing device complexity.
Solution Approach 2:
The elongate members in the patent are designed to perform multiple functions simultaneously. Each member not only provides structural support but also serves as a connection point for harness members, integrates leg support functions, and provides mounting points for armrests. This multi-functionality allows the structure to maintain stability with fewer components, resolving the contradiction between structural integrity and device complexity.
2Stability of the object's composition
If traditional collapsible chairs use numerous connectors and coupling members, then structural stability is improved, but manufacturing time and cost increase
Solution Approach 1:
The patent merges multiple connection functions into fewer connectors and coupling members. By strategically positioning connection points on the elongate members, the design achieves structural stability with reduced numbers of fastening elements, directly improving manufacturing efficiency while maintaining structural integrity.
Solution Approach 2:
The patent extracts and eliminates unnecessary connectors and coupling members from the traditional chair design. By carefully analyzing which connections are essential for stability and which can be removed or integrated into the elongate members themselves, the design reduces assembly complexity and manufacturing time while preserving structural stability.
3Device complexity
If traditional collapsible chairs lack harness members, then structural simplicity is maintained, but adaptability to personal watercraft is reduced
Solution Approach 1:
The patent integrates harness members into the existing elongate member structure, allowing the same structural components to serve both structural support functions and attachment functions. The harness members are positioned to connect to the elongate members at strategic points, enabling the chair to be securely attached to personal watercraft without adding significant structural complexity.
Solution Approach 2:
The harness members are designed as separate, detachable components that can be independently attached to the elongate members. This segmentation allows the harness system to be added or removed based on usage requirements, maintaining structural simplicity when not in use while providing adaptability when needed. The modular harness design enables easy attachment and detachment from personal watercraft.
Data Source
AI summary
The embodiments herein provide a collapsible and foldable chair. The collapsible chair includes a harness member for fastening to an object. The collapsible chair comprises a seating assembly, a pair of front legs, midcross bars, a left arm support, and a right arm support. The seating assembly comprises a seat and a backrest. The seating assembly is collapsible and foldable for storage. The pair of front legs are extended from the seat assembly. A pair of front legs are hinged to a footer base. The mid-cross bars are designed to connect the seating assembly with the pair of front legs.