Multi-Cable Strength Training Apparatus with Dynamic Force Vectors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional exercise and rehabilitation equipment, such as free weights and cable-based strength training devices, only provide static loads in magnitude and direction, failing to offer the dynamic loads necessary for achieving various physiological benefits through strength training.
Innovation Solution
A strength training apparatus featuring multiple cables and actuators that can dynamically adjust tension to provide variable force vectors, allowing for real-time control of resistive forces during exercises, utilizing a system of pulleys and motors to reposition cables and generate complex force profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional free weights and cable-based devices are used, then the device structure is simple, but the load magnitude and direction are static and cannot be dynamically adjusted
Solution Approach 1:
The patent applies dynamics by replacing static weight stacks with active motorized actuators that can dynamically adjust cable tensions. The system continuously modifies force magnitude and direction during exercise execution, enabling dynamic load adaptation while maintaining a relatively compact device structure through controlled mechanical actuation.
Solution Approach 2:
The patent substitutes traditional passive mechanical weight systems with an active control system comprising motors, encoders, and controllers. This replacement enables programmable force profiles and dynamic resistance patterns that were impossible with conventional static weight mechanisms, significantly enhancing adaptability.
2Adaptability or versatility
If multiple cables and actuators are added to provide dynamic force vectors, then the adaptability and exercise variability increase, but the device complexity and cost increase
Solution Approach 1:
The patent implements multi-functionality by designing a modular actuator system where each motorized unit can independently control multiple cables. The shared control architecture and reconfigurable cable routing allow the same hardware configuration to support multiple exercise types and resistance patterns, reducing the need for separate specialized equipment.
Solution Approach 2:
The patent utilizes parameter changes by enabling continuous adjustment of force magnitude, direction, and temporal patterns through programmable control. The system modifies operational parameters in real-time during exercise execution, allowing a single device configuration to deliver diverse training stimuli through software-controlled force profiles.
3Measurement precision
If real-time geometric arrangement data is processed to generate operating setpoints, then the force vector control precision improves, but the computational complexity and control system requirements increase
Solution Approach 1:
The patent implements feedback by continuously monitoring cable positions, pulley locations, and actuator states through encoders and position sensors. This real-time data feeds into the control algorithm, which calculates required force adjustments and sends corrective commands to actuators, creating a closed-loop system that maintains precise force vector control despite dynamic geometric changes.
Solution Approach 2:
The patent applies preliminary action by pre-calculating optimal force distribution patterns for various exercise configurations and storing them as lookup tables or predefined profiles. During exercise execution, the controller retrieves and adjusts these pre-computed parameters based on real-time position data, reducing online computational requirements while maintaining control precision.
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 dynamic resistance training that mimics natural movements, allowing for a broader range of muscle engagement and exercise variability, enhancing the effectiveness of strength training programs by simulating traditional weight training while offering adaptable force profiles.
Implementation Method 1
a first motor configured to provide tension to the first cable
Implementation Method 2
a first rotary member engaging the first cable and defining a location at which the first cable extends from the rail
Data Source
AI summary
An apparatus includes a first cable, a first motor configured to provide first tension to the first cable, a second cable coupled to the first cable at an end effector, and a second motor configured to provide second tension to the second cable. The first cable and the second cable are routed such that the first tension and the second tension combine to provide a force on the end effector. At least one of the first tension or the second tension is directed at least partially in a downward direction.