Eddy Current Resistance Device for Noise-Free Training
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Solution Overview
Problem
Existing resistance training machines require mechanical adjustments, which interrupt training and cause noise due to gravity-induced collisions of weight bars when not in use, making them inconvenient and inefficient.
Innovation Solution
A resistance device utilizing a first and second rotating assembly with magnets to generate eddy currents, providing continuous resistance through a drive unit and transmission system, allowing for adjustable and controlled resistance levels without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical weight adjustment is used, then resistance can be changed, but training is interrupted and convenience deteriorates
Solution Approach 1:
The patent replaces the mechanical weight stack system with an electromagnetic resistance generation system. A motor-driven rotor with magnets creates variable resistance through electromagnetic interaction with a conductive stator, eliminating the need for mechanical weight plates and pins. This allows continuous resistance adjustment during training without interrupting the exercise flow.
Solution Approach 2:
The resistance level is controlled by changing operational parameters rather than physical configuration. The motor speed, magnetic field strength, or electromagnetic interaction parameters can be adjusted electronically to vary resistance, allowing seamless transitions between different resistance levels without stopping the training session.
2Area of stationary object
If weight bars are stacked for storage, then space is saved, but gravity causes collisions and noise is generated
Solution Approach 1:
The patent eliminates the mechanical weight bar stacking system entirely by using electromagnetic resistance generation. The resistance is created through the interaction between magnets on a rotating component and conductive material, removing the source of gravity-induced collisions and noise while maintaining resistance functionality.
Solution Approach 2:
The harmful element (weight bars that cause noise when stacked) is completely removed from the system. The resistance function is extracted and reimplemented through electromagnetic means, separating the useful function (resistance) from the harmful side effect (noise).
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 continuous and adjustable resistance during training, reducing noise and improving user convenience by generating resistance through controlled eddy currents, enhancing the effectiveness and efficiency of resistance training.
Implementation Method 1
The first rotating member is influenced by the magnets to generate eddy currents during rotation of the first and second rotating assemblies relative to each other in order to brake rotation of the same
Implementation Method 2
The first rotating member is influenced by the magnets to generate eddy currents during rotation of the first and second rotating assemblies relative to each other
Implementation Method 3
The eddy currents generated by the first rotating member during rotation of the first and second rotating assemblies relative to each other provide resistance to the transmission unit
Data Source
AI summary
A resistance device includes a first rotating assembly having a first rotating member, and a second rotating assembly having a second rotating member and a plurality of magnets. A transmission unit is connected to one of the rotating assemblies for driving rotation of the same. A drive unit is connected to the other one of the rotating assemblies, is configured to receive a control signal, and is configured to drive rotation of the other one of the rotating assemblies according to the received control signal. Eddy currents generated by the first rotating member provide resistance to the transmission unit. A resistance training machine having the resistance device is also disclosed.