Triangular Sitting Device with Hard Core for Pelvic Neutral Position
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Solution Overview
Problem
Existing sitting devices fail to provide stable support that maintains the pelvis in its neutral position, leading to spinal diseases such as cervical, thoracic, and lumbar issues due to incorrect sitting postures when sitting on flat surfaces without adequate support.
Innovation Solution
A sitting device with a padded member and a fully inserted hard block, made of resilient and non-resilient materials respectively, designed to keep the pelvis in a neutral position by distributing body weight evenly and preventing tilting, ensuring correct posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a soft cushion is used to provide comfort when sitting on flat surfaces, then comfort is improved, but the ability to provide stable support that keeps the pelvis in neutral position deteriorates
Solution Approach 1:
The cushion combines soft outer material (foam, cotton, or fabric) with a hard inner core (wood, plastic, or metal), creating a composite structure that provides both comfort through the soft exterior and stable support through the rigid interior core, resolving the contradiction between comfort and stability
2Ease of operation
If fluffy soft materials are used to raise hips and absorb reaction force, then comfort is improved, but the ability to prevent pelvic tilting deteriorates
Solution Approach 1:
The combination of soft outer material for comfort and hard inner core for structural stability prevents the cushion from deforming under body weight, thereby maintaining proper pelvic alignment and preventing harmful pelvic tilting while still providing comfort
3Device complexity
If no supporting device is used when sitting on flat surfaces, then device complexity is reduced, but the ability to maintain correct sitting posture deteriorates
Solution Approach 1:
The supporting device is divided into distinct functional segments: an outer cushioning layer for comfort and an inner hard core for structural support and pelvic alignment, allowing each segment to perform its specific function efficiently while maintaining overall simplicity
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 device effectively prevents spinal diseases by maintaining the pelvis in a neutral position, reducing back pain and muscle imbalances, thereby alleviating conditions like cervical, thoracic, and lumbar diseases.
Implementation Method 1
the gravity force of the body of a sitter
Implementation Method 2
made of resilient materials such as foam, rubber, or cotton
Data Source
Figure 1~2
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Figure 5
AI summary
A sitting device (100) for prevention of spinal diseases comprises a padded member (200), a thin pad (300) extended forwardly from the padded member (200), and a hard block (400) fully inserted inside the padded member (200). The padded member (200) has a generally right triangular shape, and is made of resilient materials. The hypotenuse surface (201) of the padded member (200) is undulating economically The hard block (400) is made of a non-resilient material, and is able to tolerate, without rupturing, the gravity force on a mass of an adult's body with a shape and size similar to those of the adult's buttocks. The hard block (400) is inserted completely inside the right angle area of the padded member (200). The height (H) of the front side (403) of the hard block (400) is greater than the distance from the lowest point of the sitter's coccyx to the lowest point of his tuberosity of ischium. Both the padded member (200) and the hard block (400) have a flat bottom side to ensure stability.