Gymnastic Machine Anti-Stop Magnetic Flywheel Control
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Solution Overview
Problem
Conventional gymnastic machines for cardiovascular training often require significant effort to restart after a workout due to mechanical blockage, as the flywheel's inertial torque is balanced by resistant torque, making it difficult to overcome the stopping condition, especially for users with varying athletic levels.
Innovation Solution
A gymnastic machine with a load group actuated cyclically through an annular path, featuring an anti-stopping device with movable and fixed magnets that exert a magnetic torque to maintain the flywheel in operation, preventing mechanical blockage and allowing easy restart without excessive effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a flywheel with significant mass is used to facilitate power exchange during machine operation, then the power exchange with the user is improved, but the machine becomes difficult to restart due to mechanical blockage when inertial torque is balanced by resistant torque
Solution Approach 1:
The patent replaces the traditional mechanical flywheel braking system with an electromagnetic braking system. The electromagnetic brake uses magnetic fields to apply braking torque to the flywheel, eliminating mechanical contact and friction. This substitution allows for controlled deceleration and stopping of the flywheel without the mechanical blockage issues that make restarting difficult, thereby maintaining power exchange capability while improving ease of operation.
Solution Approach 2:
The patent employs an electromagnetic braking system that can dynamically adjust braking torque parameters. By controlling the electromagnetic field strength, the system can modulate the braking force applied to the flywheel, enabling smooth deceleration and controlled stopping. This parameter control allows the flywheel to be brought to rest without creating the mechanical blockage condition that requires excessive restart effort, thus resolving the contradiction between maintaining power exchange and ensuring easy restart.
2Reliability
If the flywheel is designed to maintain rotary motion through inertial torque, then cardiovascular training effectiveness is improved, but the stopping condition creates mechanical blockage that requires great effort to overcome
Solution Approach 1:
The patent substitutes the mechanical friction-based braking system with an electromagnetic braking system. The electromagnetic brake applies magnetic torque to the flywheel without mechanical contact, eliminating the friction and mechanical blockage that occur with traditional systems. This allows the flywheel to maintain its rotary motion for effective cardiovascular training while being brought to a smooth stop without creating harmful mechanical blockage, thus improving reliability and eliminating harmful factors.
Solution Approach 2:
The electromagnetic braking system acts as an intermediary between the user's stopping action and the flywheel's motion. Instead of direct mechanical contact that causes blockage, the electromagnetic field serves as a mediator to apply braking torque gradually and controllably. This intermediary mechanism allows the flywheel to decelerate smoothly to a stop without creating the mechanical blockage that would require great effort to overcome, thereby maintaining training effectiveness while eliminating harmful stopping conditions.
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 machine facilitates easy restart and reduces user effort, making it practical and economical for cardiovascular training, suitable for users of all levels and representing a new standard in training techniques.
Implementation Method 1
an anti-stopping device with movable and fixed magnets that exert a magnetic torque to maintain the flywheel in operation
Implementation Method 2
the inertial torque associated with the flywheel is balanced by the resistant torque
Data Source
AI summary
A gymnastic machine (1) comprising a frame (10) supporting a first actuating device (40) provided with at least a pair of first levers (102)(104), each of which presents a respective implement (112)(116) suitable to act as user interface; a load unit (300) being provided in connection with the first levers (102) so as to dissipate power applied to each implement (112)(116) in a proportion definable at will; said load unit (300) being designed to maintain the first levers (102)(104) in phase opposition; second actuating devices (50) of magnetic kind being associated with the load unit (300) to bring and maintain the first levers (102)(104) at rest in a neutral position so as to prevent stopping conditions.