Female Ergonomic Chair Geometry for Posture Alignment
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Solution Overview
Problem
Ergonomic chairs fail to adequately support workers, leading to increased fatigue and musculoskeletal disorders due to inadequate design, complex adjustment mechanisms, and lack of consideration for individual anatomical needs, particularly for female users, resulting in reduced productivity and increased healthcare costs.
Innovation Solution
A chair designed specifically for female anatomy with a seat and backrest that form convex arcuate profiles, positioned to create an acute angle between the seat and back, allowing for optimal alignment of the hip and spine, and featuring a flexible heel rest and adjustable mechanisms for customizable support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adjustable mechanisms are added to chairs to improve ergonomic support, then worker comfort and posture are improved, but device complexity increases and potential failure points increase
Solution Approach 1:
The chair back is designed to automatically adjust to the worker's back contours without requiring manual intervention. The flexible back structure self-adapts to provide ergonomic support, eliminating the need for complex adjustment mechanisms while maintaining ease of operation.
Solution Approach 2:
The backrest uses varying degrees of flexibility and contouring along its length to provide different levels of support at different positions. This gradient approach allows the chair to accommodate various body types and positions without requiring mechanical adjustments, reducing complexity while maintaining ergonomic benefits.
2Ease of operation
If adjustable mechanisms are added to chairs to improve ergonomic support, then worker comfort is improved, but reliability decreases due to potential mechanism failure
Solution Approach 1:
The chair provides ergonomic support through its inherent flexible structure rather than through adjustable mechanisms that can fail. The backrest automatically adapts to the user's posture without requiring any moving parts, buttons, or electronic components, thereby eliminating reliability concerns associated with adjustment mechanisms.
3Ease of manufacture
If chair design is standardized to reduce manufacturing costs, then ease of manufacture is improved, but adaptability to individual worker needs decreases
Solution Approach 1:
The backrest features varying local properties along its length, with different zones of flexibility and contouring designed to match specific anatomical regions. This allows a single standardized chair design to adapt to individual worker needs by providing localized support where required, without requiring customization of the entire chair.
Solution Approach 2:
The flexible back structure incorporates gradual parameter changes in its contours and material properties, allowing it to naturally conform to different body shapes and sizes. This enables the standardized chair design to provide anatomically appropriate support for various workers without requiring multiple chair models or custom manufacturing.
Data Source
AI summary
A chair and method of use is for a chair disposed upon a surface that is designed for a female anatomy; the chair includes a seat having proximate and distal end portions forming a first convex surface with a chord plane intersecting, the having a length shorter than its width. The chair includes a back having first and second end portions that form a second convex surface, wherein, a second lateral measure on the second end is less than a first lateral measure on the first end. The seat plane and an extension axis that is perpendicular to the surface are relatively positioned to one another to form an acute angle to one another, such that a user's femur bone lengthwise angles downward from hip to knee toward the surface while the user's shoulders arch rearward thus aligning the user's hip joint and shoulder joint vertically for better posture.