Walking Training Harness with Horizontal Pulling Units
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Solution Overview
Problem
Current walking training systems are inadequate in effectively assisting walking training, particularly for hemiplegic patients, as they fail to provide sufficient and controlled pulling forces to assist pelvic motion during walking.
Innovation Solution
A walking training system comprising a harness attached to the trainee's trunk, with multiple pulling units (each including a wire, winding mechanism, and pulley) that apply forces from different directions, controlled by a unit to ensure the forces are applied in a horizontal direction, assisting pelvic motion and allowing for adjustable attachment points and orientations to optimize training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If wires pull the user's waist obliquely from above, then the waist can be swung by the biaxial drive unit, but the pulling force is not sufficient and not applied in the optimal horizontal direction for walking training
Solution Approach 1:
The patent changes the pulling direction from oblique (above the user) to horizontal (at the user's height level). This dimensional change in force application direction optimizes the mechanical advantage for walking training, allowing the pulling force to effectively assist pelvic motion without the vertical component that reduces training effectiveness.
Solution Approach 2:
The patent modifies the parameters of force application by changing both the direction (from oblique to horizontal) and the attachment point (from above to at height level). These parameter changes ensure the pulling force is applied optimally to assist walking motion, directly addressing the insufficiency of conventional pulling methods.
2Adaptability or versatility
If the biaxial drive unit is used to swing the waist, then walking training can be performed, but the system lacks controlled and adjustable pulling forces from multiple directions
Solution Approach 1:
The patent divides the single biaxial drive unit into multiple independent pulling units (first pulling unit and second pulling unit). Each pulling unit can be independently controlled to apply force from different directions, providing adaptability and versatility in training while maintaining manageable system complexity through modular design.
Solution Approach 2:
The patent creates a multi-functional pulling system where multiple pulling units can work independently or in combination. This universal design allows the system to provide controlled pulling forces from various directions to assist different aspects of walking training, enhancing adaptability without proportionally increasing complexity.
3Force
If the pulling force is applied from above the user, then the waist can be supported, but the load on the trainee is not reduced effectively and pelvic motion is not improved
Solution Approach 1:
The patent repositions the force application from the vertical dimension (above the user) to the horizontal dimension (at the user's height level). This dimensional shift allows the pulling force to effectively support and assist pelvic motion while reducing the vertical load on the trainee, addressing both support and load reduction requirements.
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 system effectively assists walking by providing controlled and adjustable pulling forces, enhancing the training experience for hemiplegic patients by improving pelvic motion and reducing the load on the trainee, thus facilitating more effective walking rehabilitation.
Implementation Method 1
a winding mechanism configured to wind the wire so as to apply the pulling force to the harness
Implementation Method 2
a converter configured to convert an orientation of the wire
Data Source
AI summary
A walking training system and an operation method capable of performing training effectively are provided. A walking training system according to an embodiment includes a harness attached to a trainee's trunk, a first pulling unit configured to apply a pulling force to the harness from a first direction along a horizontal direction, a second pulling unit configured to apply a pulling force to the harness from a second direction along the horizontal direction, and a control unit configured to control the first and second pulling units.