Magnetic Reluctance Device With Lead Screw Adjustment
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Solution Overview
Problem
Conventional magnetic reluctance devices for fitness equipment are structurally complex and inconvenient to adjust the strength of the magnetic drag they produce, leading to maintenance issues and user experience limitations.
Innovation Solution
A magnetic reluctance device comprising a casing, inner pipe, lead screw, magnet, and adjustment unit, where the protruding unit on the inner pipe moves along the lead screw's thread to rotate the inner pipe, generating magnetic drag, and an adjustment unit allows for altering the distance between the metallic element and magnet to adjust the drag's strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional magnetic reluctance devices are used to produce magnetic drag, then the fitness equipment can provide magnetic resistance, but the device becomes structurally complicated and difficult to adjust
Solution Approach 1:
The device is divided into distinct functional modules: a magnet mounted on the inner pipe, a metallic element on the outer pipe, and a lead screw mechanism with protruding units. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining magnetic drag production capability
Solution Approach 2:
The adjustment mechanism is extracted as a separate, simple lead screw system that can be independently controlled. The protruding units on the inner pipe engage with the lead screw threads, allowing the magnet's position relative to the metallic element to be adjusted without complicating the main magnetic drag structure
2Reliability
If conventional magnetic reluctance devices are used, then magnetic drag is produced, but the strength adjustment is inconvenient
Solution Approach 1:
The device incorporates a dynamic adjustment mechanism where the lead screw can be rotated to change the position of the protruding units along its threads. This allows the distance between the magnet and metallic element to be dynamically adjusted, thereby conveniently changing the magnetic drag strength during operation
Solution Approach 2:
The magnetic drag strength is adjusted by changing the physical parameter of distance between the magnet and metallic element. By rotating the lead screw, the position of protruding units changes, which alters the gap distance and consequently the magnetic drag force, providing easy strength adjustment
3Force
If metallic weights are used in fitness equipment, then weight resistance is provided, but frequent collision causes damage and increases maintenance costs
Solution Approach 1:
The patent replaces the conventional mechanical weight system with a magnetic field-based resistance system. The magnet and metallic element create magnetic drag force without physical contact or collision, eliminating the damage and maintenance issues associated with metallic weights while providing equivalent resistance force
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 device is structurally simple, allows for convenient adjustment of magnetic drag strength, reducing maintenance costs and enhancing user experience by providing a customizable load perception.
Implementation Method 1
magnetic reluctance device for producing a magnetic drag
Implementation Method 2
the magnet and the metallic element are spaced apart from each other to define a gap therebetween... produce a magnetic drag
Implementation Method 3
The lead screw is slidably disposed in the inner pipe and penetrates the penetrating hole... The at least a protruding unit abuts against the thread of the lead screw
Data Source
AI summary
A magnetic reluctance device includes a casing, an inner pipe, a lead screw, a magnet, at least a protruding unit, and at least a metallic element. The magnetic reluctance device is advantageously characterized in that, at least a protruding unit protrudingly disposed on the inner wall surface of an inner pipe moves along a thread of a lead screw, and thus the lead screw slides and drives the inner pipe to rotate, such that it is convenient for a magnet to produce a magnetic drag between the metallic element and the metallic pipe of the casing. The magnetic reluctance device further includes an adjustment unit for altering the distance between the metallic element and the magnet to thereby conveniently alter the strength of the magnetic drag produced between the magnet, the metallic element, and the metallic pipe of the casing while the magnet is rotating.