Seat cushion
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Solution Overview
Problem
Conventional seat cushions fail to effectively support the natural movement of the hip and coccyx, leading to inadequate exercise of lower back muscles and increased fatigue on the intervertebral discs due to uniform weight distribution and lack of dynamic support.
Innovation Solution
A seat cushion designed with a fluid or gas containing bag that transfers fluid or gas to adjust thickness in response to body weight shifts, allowing for natural hip movement and reduced pressure on intervertebral discs, thereby exercising the muscles of the hip, coccyx, and lower intervertebral discs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional seat cushions use solid materials like sponge or foam, then the cushion provides uniform support, but it fails to support natural hip and coccyx movement and exercise lower back muscles
Solution Approach 1:
The seat cushion uses a fluid-filled chamber where hydraulic pressure changes in response to body weight shifts. When weight is applied to one side, fluid pressure increases on that side and decreases on the other, causing the cushion to dynamically adjust its shape and thickness to follow natural hip movement while maintaining continuous muscle engagement
Solution Approach 2:
The cushion transitions from a static solid material structure to a dynamic fluid-based system that continuously adapts its shape and support characteristics in response to user movement, enabling both natural motion and ongoing muscle exercise
2Stability of the object's composition
If conventional seat cushions distribute weight uniformly, then the cushion structure remains stable, but pressure on intervertebral discs increases and fatigue occurs
Solution Approach 1:
The fluid pressure mechanism automatically redistributes weight dynamically, creating varying pressure zones that follow natural body contours and movements. This prevents concentrated pressure points on the intervertebral discs while maintaining overall structural stability through the incompressible nature of the fluid
Solution Approach 2:
The cushion changes its physical parameters (thickness, shape, pressure distribution) in real-time in response to body weight shifts, allowing the structure to remain stable while adapting pressure distribution to reduce harmful effects on the spine
3Ease of manufacture
If seat cushion uses fixed thickness design, then manufacturing is simple, but it cannot adapt to body weight shifts and exercise muscles
Solution Approach 1:
The fluid-filled chamber provides automatic adaptability through hydraulic pressure changes in response to body weight shifts. The system requires minimal additional components beyond the fluid chamber itself, maintaining manufacturing simplicity while achieving dynamic adaptation to user movements and weight distribution
Solution Approach 2:
The cushion self-adjusts its thickness and shape in response to body weight shifts through internal fluid pressure changes, eliminating the need for external control systems or complex mechanical adjustments while maintaining manufacturing 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 seat cushion provides continuous and smooth back movement, reducing fatigue by dynamically supporting the hip and coccyx muscles through fluid or gas transfer, promoting correct sitting posture and muscle exercise.
Implementation Method 1
the fluid or gas contained in the seat cushion will in turn be transferred back and forth in the bag containing fluid or gas
Data Source
AI summary
A seat cushion according to the present invention is configured as a fluid or gas containing bag. When weight of buttocks are transferred back and forth in left, right, front, rear directions, the fluid or gas contained therein will be transferred back and forth. The level of the fluid or gas contained in the seat cushion is defined by the manufacturer which is 5-40 millimeters. The fluid or gas is detained inside in use. The seat cushion can be laid on cushion of different seats and on the floor.