Split Seat Coupling for 3D Pelvic Motion While Sitting
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Solution Overview
Problem
Traditional seat designs block the natural three-dimensional pelvic movement, leading to premature wear and degeneration of intervertebral discs and back pain, as they fail to mimic the dynamic movements experienced during walking.
Innovation Solution
A seat device with two independent seat halves connected via a coupling device that allows translational and rotational movement in all spatial directions, incorporating elastic and/or damping components, adjustable mechanisms, and sensors for optimal support and feedback, enabling three-dimensional pelvic movement and promoting natural spinal alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional seat designs with fixed structures are used, then structural stability is improved, but natural three-dimensional pelvic movement is blocked
Solution Approach 1:
The seat is divided into two independent seat halves that can move independently of each other. Each seat half is connected to the intermediate piece through its own coupling device with elastic and damping components, allowing segmented movement that mimics natural pelvic motion while maintaining overall structural stability.
Solution Approach 2:
The coupling device incorporates elastic and damping components that enable dynamic movement of the seat halves in response to user motion. The system transitions from a static fixed structure to a dynamic system that adapts to and supports natural three-dimensional pelvic movements during sitting, standing, and transitioning between positions.
2Ease of manufacture
If fixed seat structures are used, then manufacturing simplicity is improved, but premature wear and degeneration of intervertebral discs occurs
Solution Approach 1:
The seat device incorporates dynamic coupling devices with elastic and damping components that enable movement in all spatial directions and rotation around all spatial axes. This dynamic capability allows the seat to mimic natural movements experienced during walking, reducing harmful static loads on intervertebral discs while remaining manufacturable through modular assembly of standardized components.
Solution Approach 2:
The elastic and damping components in the coupling device can be adjusted or selected with different parameters (stiffness, damping coefficients) to optimize the movement characteristics and load distribution. This allows tuning of the system to reduce specific harmful factors on intervertebral discs while maintaining ease of manufacture through standardized component families.
3Adaptability or versatility
If independent movable seat halves are provided, then three-dimensional pelvic movement is enabled, but device complexity increases
Solution Approach 1:
The coupling device is segmented into modular components including elastic elements, damping components, and connection elements. Each seat half has its own independent coupling mechanism, allowing the complexity to be distributed and managed separately. This modular segmentation enables three-dimensional pelvic movement while keeping individual components relatively simple and manageable.
Solution Approach 2:
The coupling device is designed as a multi-functional component that simultaneously provides elastic support, damping, guidance of movement in all spatial directions, and rotational freedom around all spatial axes. By consolidating multiple functions into a single integrated coupling device, the overall system complexity is reduced compared to having separate mechanisms for each function.
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 device allows for dynamic movement of the lumbar spine and pelvis, reducing negative loads and promoting comfort and mobility, thereby alleviating back pain and supporting the natural posture and movement of the pelvis, even when sitting.
Implementation Method 1
The at least one means also favourably comprises at least one elastic and/or damping component
Implementation Method 2
The at least one means also favourably comprises at least one elastic and/or damping component
Data Source
AI summary
A seat device is provided. The seat device has a foot part, an intermediate piece that is connected to the foot part, and a seat that is connected to the intermediate piece and is formed by two individual seat halves. The seat halves can be moved independently of each other. A coupling device is provided between the seat and the intermediate piece. The seat halves can be moved horizontally in a translatory manner by the coupling device.