Auxiliary Chair Posture Support With Quick-Release Rotation
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Solution Overview
Problem
Auxiliary chairs for disabled individuals, particularly those with balance issues like scoliosis, face the inconvenience of posture support structures blocking the way when the user needs to leave the chair.
Innovation Solution
The auxiliary chair incorporates a quick releasing structure connected to a posture support structure with multiple joint modules and bars, allowing the support structures to rotate or detach from the chair body, enabling easy adjustment and removal without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If posture support structures are disposed at the backrest or two sides of the seat frame, then body support effect is improved, but the structures block the way when user leaves the chair
Solution Approach 1:
The posture support structure is designed to be adjustable between a first position (protruding from the backrest) and a second position (retracted or rotated). The rotating connection between the backrest and support structure enables dynamic reconfiguration, allowing the structure to provide body support during sitting while clearing the path when the user needs to leave the chair.
2Reliability
If posture support structures are adjusted according to posture demands, then body support effectiveness is improved, but adjustment complexity increases
Solution Approach 1:
The posture support structure is divided into multiple segments including the backrest, support structure, and rotating connection components. This segmentation allows independent adjustment of each component to achieve different posture support configurations while maintaining manageable complexity through modular design.
Solution Approach 2:
The rotating connection enables dynamic adjustment of the support structure's position and angle. Users can rotate the support structure between different positions to match various posture demands, providing adaptability without requiring complex mechanical adjustment mechanisms.
3Stability of the object's composition
If posture support structures are fixed to chair body, then structural stability is improved, but ease of removal decreases
Solution Approach 1:
The rotating connection provides a dynamic attachment mechanism that maintains stable structural connection during normal use while enabling easy rotation or detachment when removal is needed. This resolves the contradiction by allowing the structure to be both stable during operation and easily removable when required.
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 solution provides users with enhanced convenience by allowing the posture support structures to be easily adjusted or removed, preventing them from obstructing the user's path and improving usability.
Implementation Method 1
each of the first joint modules has a first rotatory axis, and the first rotatory axes of the two first joint modules are parallel to each other
Implementation Method 2
the second joint module has a second rotatory axis being orthogonal to each of the first rotatory axes
Data Source
AI summary
An auxiliary chair includes a chair body, a quick releasing structure, and a posture support structure. The posture support structure is connected to the quick releasing structure and includes at least two bars connected in series, two first joint modules and a second joint module. The two first joint modules are respectively connected to two ends of a first member of the bars, each of the first joint modules has a first rotatory axis, and the first rotatory axes are parallel to each other. The second joint module is connected to a distal end of a second member of the bars, and the second joint module has a second rotatory axis being orthogonal to each of the first rotatory axes. The quick releasing structure is operated to allow the posture support structure to rotate relative to the chair body or to separate from the chair body.