Magnetic Control Exerciser With Adjustable Damping and Rope Collection
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Solution Overview
Problem
Conventional exercisers have limited operating strokes, increased weight and manufacturing costs due to fixed rope lengths, and are unsuitable for children or older users, as they require bidirectional force resistance, which can be dangerous and counter-effective.
Innovation Solution
A magnetic control exerciser with an adjustable damping device, a pulley system, and a rope collecting mechanism that allows for variable stroke lengths, reducing the diameter of counterweight and magnetic components, enabling safer and more versatile exercise modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the diameter of the counterweight flywheel is enlarged to coil a longer rope for lengthening the stroke, then the operating stroke is extended, but the weight, manufacturing cost and transporting cost are raised
Solution Approach 1:
The patent applies a movable pulley that can change position dynamically along the rope path, allowing the effective stroke length to be extended without proportionally increasing the flywheel diameter. The movable pulley creates a mechanical advantage system where the rope travels a longer path through multiple pulley reflections, effectively multiplying the stroke while keeping the rope collection radius manageable.
Solution Approach 2:
The patent uses multiple pulleys arranged in a three-dimensional space to create a complex rope path. By reflecting the rope through multiple pulleys (fixed and movable), the effective stroke length is extended in a dimensional sense without requiring a proportionally larger flywheel diameter. The rope path becomes a multi-dimensional trajectory rather than a simple circular coil.
2Reliability
If a spring, resilient rope or counterweight is used to bidirectionally provide damping, then the training effect is promoted, but the operator must continually force to resist the restitution force which is dangerous particularly when exhausted
Solution Approach 1:
The patent extracts the restitution force function from the damping mechanism by using a one-way bearing that allows free movement in the pulling direction but locks in the return direction. This separates the damping function (providing resistance during pulling) from the return function (allowing safe, unforced return), eliminating the harmful bidirectional forcing while maintaining training effectiveness.
Solution Approach 2:
The one-way bearing acts as an intermediary mechanism between the damping device and the rope. It mediates the force transmission by allowing damping forces to act during the pulling stroke while preventing any restitution force from acting during the return stroke, thus protecting the operator while maintaining training benefits.
3Productivity
If the rope collecting device coils the rope with high force, then the rope is collected efficiently, but the coiling force exceeds the damping value causing operational issues
Solution Approach 1:
The patent carefully selects and adjusts the coiling force parameter of the rope collecting device to be within a specific range: greater than zero (to ensure collection) but less than the minimum damping value (to ensure smooth operation). This parameter optimization allows the system to maintain both collection efficiency and operational smoothness simultaneously.
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 magnetic control exerciser effectively extends the operating stroke, reduces material and transport costs, and provides a safer, multi-functional workout suitable for various users, including children and older individuals, while maintaining effective damping and rehabilitation functions.
Implementation Method 1
an outputting damping value of the damping device is adjusted due to a magnetic control effect
Implementation Method 2
a damping device disposed on the base, wherein an outputting damping value of the damping device is adjusted due to a magnetic control effect
Data Source
AI summary
A magnetic control exerciser includes a base, a pulley device and damping device respectively disposed on the base. A first rope is coiled on the pulley device, wherein a first handlebar and a second handlebar are respectively transversally connected to a first end and a second end of the first rope. A second rope has two opposite ends respectively connected to the pulley device and the damping device for providing a damping and promoting the effect of the magnetic control exerciser in accordance with the present invention. The first handlebar has an original horizontal height higher than that of the second handlebar for providing different exercising modes. A seat is secured on the base for user to easily operate the first handlebar and the second handlebar.