Functional chair for posture correction and lumbar traction
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Solution Overview
Problem
Existing chairs fail to effectively correct improper postures and treat spinal deformities such as scoliosis, kyphosis, and lordosis, and do not provide adequate lumbar traction for prolonged sitting, leading to health issues like neck and back pain, spinal disorders, and blood circulation problems.
Innovation Solution
A functional chair with a rotatable backrest plate, headrest, and traction driving device that allows for lumbar traction, adjustable bands for shoulder and waist support, and a tension measurement sensor to control tension, enabling posture correction and lumbar traction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional chair without backrest or with simple backrest is used, then the chair structure is simple and cost-effective, but the pressure on intervertebral discs increases significantly (up to 140-180 compared to 100 in standing position)
Solution Approach 1:
The backrest plate is designed to be rotatable around a horizontal axis, allowing dynamic adjustment between sitting and lying down positions. This dynamic capability enables the user to change posture and reduce spinal pressure while maintaining a relatively simple chair structure.
Solution Approach 2:
The backrest plate is formed with a curved surface that conforms to the natural curvature of the human back. This curved design provides ergonomic support, distributes pressure more evenly across the backrest, and reduces concentrated pressure on intervertebral discs while maintaining structural simplicity.
2Device complexity
If a chair limited to pelvic correction is used, then the device structure is simple, but the function is limited and cannot effectively correct improper posture of neck and lumbar portions or treat spinal deformity
Solution Approach 1:
The chair integrates multiple functions including pelvic correction, neck posture correction through the rotatable headrest, lumbar support through the curved backrest plate, and lumbar traction capability. This multi-functional design allows a single device to address various posture problems and spinal issues without requiring multiple separate devices.
Solution Approach 2:
The headrest can be rotated upwards and downward to adapt to different head positions and provide neck posture correction. The backrest plate can be rotated between sitting and lying positions to provide different types of support and traction, enabling the device to perform multiple correction functions dynamically.
3Device complexity
If a chair without lumbar traction function is used, then the device structure is simple, but it cannot relieve compression of spinal nerve roots or treat spinal disorders caused by prolonged sitting
Solution Approach 1:
The ability to rotate the backrest plate between sitting and lying positions enables the chair to provide lumbar traction function. When in the lying down position, the chair can relieve compression on spinal nerve roots and support spinal health, a function that cannot be achieved with a fixed sitting position chair.
Solution Approach 2:
The curved surface of the backrest plate is designed to conform to the natural curvature of the spine, providing ergonomic support that maintains proper spinal alignment. This curved design helps distribute pressure evenly and prevents the development of spinal deformities during prolonged sitting.
4Adaptability or versatility
If adjustable bands and headrest are added for comprehensive posture correction, then posture correction effectiveness is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The posture correction system is divided into independent adjustable components including the rotatable headrest, the curved backrest plate, and adjustable bands. Each component can be manufactured and adjusted independently, allowing for modular assembly and easier manufacturing compared to an integrated rigid structure.
Solution Approach 2:
The adjustable bands and rotatable components allow the chair to adapt to different user body types and posture requirements. This adjustability is achieved through simple mechanical mechanisms that can be manufactured cost-effectively while providing comprehensive posture correction functionality.
Data Source
AI summary
A functional chair for posture correction and lumbar traction, includes a seat plate having legs connected to a lower portion thereof, wherein the seat plate supports buttocks of a user when the user sits on the chair, a backrest plate support rotatably provided at a rear end of the seat plate, a backrest plate disposed in front of the backrest plate support and formed to have a curved surface corresponding to shoulder and spine lines of the user, wherein the backrest plate is configured to be rotatable around a horizontal axis thereof, thereby enabling the user to maintain a state of sitting or lying down on the chair, and wherein the backrest plate has a headrest provided at an upper end thereof, and a traction driving device configured to enable the backrest plate to be moved in a movement direction of the backrest plate support.