Shoulder-Support Chair Structure for Upright Posture Stability
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Solution Overview
Problem
Conventional chairs fail to maintain an upright posture for individuals with spinal issues, leading to forward bias and potential falling, and existing solutions either complicate the structure or do not adequately support the waist, causing discomfort and increased cost.
Innovation Solution
A chair design featuring a supporter for the shoulder connected to a hip supporter with adjustable armpit and arm supporters, allowing for up-down and forward-rearward rotation, and folding mechanisms to distribute load and reduce spinal pressure, enabling multi-purpose use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chairs are used, then simplicity and low cost are maintained, but upright posture cannot be maintained and forward bias occurs causing falling accidents
Solution Approach 1:
The chair is divided into multiple functional segments: hip supporter, shoulder supporter, armpit supporter, and arm supporter. Each segment independently supports a specific body part, allowing the structure to maintain complexity only where needed for posture correction while keeping other areas simple.
Solution Approach 2:
Support features are localized to specific areas where they are most needed: the hip supporter provides base support, the shoulder supporter maintains upper body posture, the armpit supporter prevents forward bias, and the arm supporter reduces shoulder strain. This localized approach improves posture stability without requiring complex structures throughout the entire chair.
2Adaptability or versatility
If fixed support structures are used, then posture correction is provided, but adaptability to different body shapes and preferences is limited
Solution Approach 1:
The arm supporter is designed with rotational capability around a rotation shaft, allowing it to dynamically adjust between folded and extended positions. This dynamic feature enables the chair to adapt to different user preferences and body types without requiring complex multi-position adjustment mechanisms.
Solution Approach 2:
The rotation shaft serves multiple functions: it allows the arm supporter to fold against the shoulder supporter when not needed, enables positional adjustment for different users, and provides structural connection between components. This multi-functionality increases adaptability while minimizing added complexity.
3Ease of operation
If load is concentrated on shoulder supporter, then upright posture is maintained, but tired feeling increases due to insufficient load distribution
Solution Approach 1:
The load support function is segmented across four distinct supporters: the hip supporter bears weight from the lower body, the shoulder supporter maintains upper body posture, the armpit supporter prevents forward bias, and the arm supporter reduces strain on the shoulders. This segmentation distributes the load across multiple body regions, maintaining posture effectiveness while reducing localized fatigue.
Solution Approach 2:
The armpit supporter acts as an intermediary element between the shoulder supporter and the user's body, providing additional contact points that distribute load more evenly. This intermediary structure prevents the concentration of force on single points, thereby maintaining posture correction while improving comfort.
4Reliability
If multiple support components are added, then posture correction and load distribution are improved, but device complexity and cost increase
Solution Approach 1:
Multiple support functions are merged into a compact integrated structure where the hip supporter, shoulder supporter, armpit supporter, and arm supporter work together as a unified system. The rotation shaft serves as a common connection point, and the components can be manufactured as separate modular parts that are relatively simple to produce and assemble, reducing overall manufacturing complexity despite the multiple functions.
Data Source
AI summary
A chair equipped with shoulder supporter is provided. The chair equipped with shoulder supporter can obtain an effect of attitude remedy by reducing the pressure applied to the spine and by inducing an upright attitude of erecting the waist vertically through a shoulder supporter which is connected to a hip supporter through a base. The shoulder supporter comprises an armpit supporter provided above a vertical supporter. The chair equipped with shoulder supporter can maximize convenience and enable the multi-purpose use by selecting the use and non-use of the arm supporter or the shoulder supporter with the direction change through up-down or forward-rearward direction rotation of the arm supporter or with the folding of the armpit supporter through a rotation shaft.