Portable rocking chair
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Solution Overview
Problem
Conventional portable rocking chairs lack a compact storage solution and stability during use, as they do not efficiently fold or maintain a stable position.
Innovation Solution
A portable rocking chair design featuring a pliable seat member and support frame with angled leg and seat hubs, coil springs for stability, and elastic bands for compact folding, allowing for easy assembly and disassembly, and a torsion spring mechanism to limit rocking motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the rocking chair is designed to be portable and foldable, then it can be stored in a compact package, but it may lack stability during use
Solution Approach 1:
The rocking chair is divided into multiple separable components including a support frame with leg hubs and central support member, a separate seat portion with backrest, and independent rocking mechanisms. This segmentation allows each component to be optimized for its specific function while enabling compact storage when disassembled.
Solution Approach 2:
The chair incorporates dynamic elements including coil springs that provide suspended rocking motion, rotatable central support member that enables rocking, and flexible seat members that adapt to user position. These dynamic features maintain stability during use while allowing compact folding for storage.
2Stability of the object's composition
If the rocking chair uses a rigid frame structure, then it maintains stability during use, but it cannot be folded into a compact package for storage
Solution Approach 1:
The rigid frame is segmented into collapsible components including leg members that can be positioned at various angles, seat members that can be folded, and a central support member that rotates. This segmentation maintains structural integrity during use while enabling compact storage configuration.
Solution Approach 2:
The chair components are designed to nest within each other when folded, with seat members nesting against the backrest, leg members folding parallel to the central support, and the overall structure collapsing to a minimal volume for portable storage.
3Ease of operation
If the rocking chair uses simple connection methods, then it is easy to assemble and disassemble, but it may not maintain stable position during rocking
Solution Approach 1:
The connection system uses dynamic elements including coil springs that provide suspended rocking motion, rotatable joints at leg hubs and central support member, and flexible seat members. These dynamic connections are simple to operate yet maintain stability through controlled motion and mechanical advantage.
Solution Approach 2:
The connection parameters are optimized to balance ease of assembly with stability, including spring constants that provide gentle rocking resistance, joint friction that prevents unwanted movement, and geometric configurations that maintain structural integrity while allowing simple manual operation.
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 enables a compact storage solution while maintaining stability and ease of use, allowing the chair to be efficiently folded and assembled, with the elastic bands ensuring the components remain together for storage and the torsion spring controlling rocking motion.
Implementation Method 1
coil springs for stability
Implementation Method 2
elastic bands for compact folding
Implementation Method 3
torsion spring mechanism to limit rocking motion
Data Source
AI summary
A rocking chair has a frame with first and second leg hubs. The first and second leg hubs each have leg member openings for leg members. The frame also has first and second seat hubs. The seat hubs have seat member openings for seat members. The first and second leg hubs form a leg support frame and the first and second seat hubs form a seat support frame. The leg support frame is rotatably connected to the seat support frame with a biasing member extending therebetween configured to urge against rotation in either direction. The leg members detachably connect to the first and second leg hubs at the leg member openings. The seat members detachably connect to the seat hubs at the seat member openings. Seat connector pockets are provided on the corners of the seat portion to allow the seat portion to detachably connect to the seat members.