Backpack-Strap Folding Lounge Chair for Hands-Free Transport
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Solution Overview
Problem
Conventional lounge chairs that provide leg support are too bulky and inconvenient to transport, as they require frequent assembly and disassembly when carried in bags, limiting their portability to short distances.
Innovation Solution
A folding lounge chair design with hinge connections between the seat, backrest, and leg support sections, allowing for a compact configuration and a shoulder strap system that enables hands-free carrying without a bag, featuring padded crossbar elements for comfort during transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lounge chair is designed to provide full leg support and backrest, then comfort and support functionality are improved, but the chair becomes too bulky and difficult to transport
Solution Approach 1:
The lounge chair is divided into three main segments: seat section, backrest section, and leg support section. Each section can be independently folded and collapsed, allowing the chair to be disassembled into compact components for transport while maintaining full functionality when assembled.
Solution Approach 2:
The chair incorporates hinge connections that enable dynamic transformation between expanded (comfortable) and collapsed (compact) states. The leg support section can be extended outward to provide leg elevation or folded inward against the seat, allowing the chair to adapt its volume based on usage requirements.
2Volume of moving object
If a lounge chair is made collapsible to reduce size, then transportability is improved, but the chair requires a carry bag and frequent assembly/disassembly which reduces convenience
Solution Approach 1:
The lounge chair is designed to serve dual functions: it can be worn as a backpack using integrated shoulder straps for hands-free transport, or assembled into a comfortable lounging position. The same structural components enable both carrying and lounging functions without requiring separate bags or assembly steps.
Solution Approach 2:
The chair includes self-contained carrying features (shoulder straps anchored to the frame) that eliminate the need for external bags. The design allows the chair to carry itself through the user's body, transforming the transport mechanism from an external accessory to an integrated feature.
3Weight of moving object
If a lounge chair is designed to be lightweight for carrying, then portability is improved, but structural support and durability may be compromised
Solution Approach 1:
The chair utilizes fabric panels stretched over a lightweight tubular frame structure. The fabric sections provide the necessary surface area for comfort while the tubular metal frame provides structural strength with minimal weight. This combination allows the chair to be lightweight yet maintain adequate structural support for lounging.
Data Source
AI summary
A folding lounge chair that is selectively configurable between an open configuration and a folded configuration. The folding lounge chair has a seat section, a backrest section, and a leg support section. A first leg assembly and a second leg assembly are both pivotably connected to the seat section. The two leg assemblies are folded into a common plane that is flush against the seat section when the lounge chair is in its folded configuration. Shoulder straps are anchored to the seat section. The shoulder straps can be selectively opened between ends. This enables the shoulder straps to pass over the leg assemblies when in the folded configuration and pass under both the leg assemblies when the folding lounge chair is in the open configuration.