Modular Wheelchair Lower-Body Exercise With Posture Feedback
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Solution Overview
Problem
Conventional wheelchair exercise devices are unsuitable for lower body exercises, have low exercise efficiency, and pose a risk of accidents.
Innovation Solution
A wheelchair lower body exercise device that includes modules for ankle, thigh, and pelvic exercises, utilizing turntables and torsion coil springs for rotational movements, and coil springs for resistance, with integrated sensors for posture correction and health management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wheelchair exercise devices are used, then the device structure is simple, but the exercise efficiency is low and the device is unsuitable for lower body exercises
Solution Approach 1:
The exercise device is divided into multiple independent modules: ankle exercise module, thigh exercise module, and pelvic exercise module. Each module can be independently adjusted and operated, allowing targeted lower body exercises while maintaining a relatively simple overall structure.
Solution Approach 2:
The exercise device is designed to perform multiple functions within a single system, including ankle rotation exercises, thigh flexion/extension exercises, and pelvic rotation exercises. This multi-functionality increases exercise efficiency without requiring multiple separate devices.
2Reliability
If conventional exercise devices are used, then the device is easy to operate, but there is a risk of accidents and poor safety
Solution Approach 1:
The device incorporates sensors that detect user posture and exercise execution in real-time, providing feedback to control the exercise modules. This ensures safe operation while maintaining ease of use, as the system automatically adjusts based on detected conditions.
Solution Approach 2:
The exercise modules are designed with controlled resistance mechanisms that prevent excessive force application before accidents can occur. The spring-based resistance systems and controlled range of motion provide inherent safety buffers.
3Productivity
If modular exercise modules are added for ankle, thigh, and pelvic exercises, then exercise effectiveness is improved, but the device complexity increases
Solution Approach 1:
The device is segmented into three main exercise modules (ankle, thigh, pelvic), each with dedicated exercise functions. This segmentation allows for effective targeted exercises while keeping each module relatively simple and manageable.
Solution Approach 2:
Multiple exercise functions for different body parts are merged into a single integrated device that attaches to the wheelchair. The modules share common mounting structures and control systems, reducing overall complexity despite the multiple functions.
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
Enables convenient, safe, and effective lower body exercises while sitting, with integrated health monitoring and posture correction.
Implementation Method 1
torsion coil springs for rotational movements
Implementation Method 2
torsion coil springs for rotational movements
Implementation Method 3
coil springs for resistance
Data Source
AI summary
Provided is directed to a wheelchair lower body exercise device allowing lower body exercises to be performed in a wheelchair. In addition, the lower body exercise includes a thigh exercise and a pelvic exercise and provides a remarkable effect of enabling lower body exercises to be performed conveniently and easily even while sitting in a wheelchair.