Internal Magnetic Flywheel Control With Wider Resistance Range
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Solution Overview
Problem
Existing internal magnetic control devices in fitness equipment have limited resistance adjustment range, resulting in monotonous exercise experiences and high maintenance costs due to complex structures and inconsistent part coordination.
Innovation Solution
A flywheel assembly with an inertial flywheel, magnetic control disk, and speed measuring device, featuring a magnetic control disk coaxially disposed in the inertial flywheel, and a speed measuring device with an acting member and sensing element, allowing precise measurement of rotation speed and adjustment of magnetic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between the internal magnetic control device and the flywheel is adjusted, then the resistance of the fitness equipment can be changed, but the adjustment range is small and the difference between highest and lowest resistance levels is not obvious
Solution Approach 1:
A speed measuring device with acting member and sensing element is introduced as an intermediary between the flywheel and the control system. The acting member is disposed at the inertial flywheel while the sensing element is provided on the magnetic control disk, allowing precise measurement of rotation speed to enable accurate resistance control over an expanded range.
2Ease of operation
If a complex resistance adjustment mechanism is used to achieve smooth adjustment, then the coordination precision between multiple parts must be high, but the failure rate of parts coordination increases and maintenance costs rise
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with a magnetic control system. The magnetic control disk with magnetic elements interacts with the flywheel through magnetic fields rather than direct mechanical contact, eliminating the need for high-precision mechanical coordination between multiple parts while achieving smooth resistance adjustment.
Solution Approach 2:
The speed measuring device serves as an intermediary that provides feedback on flywheel rotation speed, allowing the control system to adjust resistance smoothly without relying on complex mechanical linkages. This reduces the number of moving parts and minimizes coordination failures.
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
Enhances the accuracy and reliability of resistance adjustment, improves exercise experience by expanding the resistance range, and reduces maintenance costs through simplified and stable speed measurement.
Implementation Method 1
the flywheel acquires resistance by cutting the magnetic inductance lines of the internal magnetic control device as it rotates relative to the internal magnetic control device
Implementation Method 2
the flywheel acquires resistance by cutting the magnetic inductance lines of the internal magnetic control device
Implementation Method 3
the speed measuring device comprising an acting member and a sensing element, the acting member is disposed at the inertial flywheel, the sensing element is provided on the magnetic control disk
Data Source
AI summary
Disclosed are an internal magnetic control device, a flywheel assembly and a fitness equipment, wherein the flywheel assembly comprises a flywheel, an internal magnetic control device and a speed measuring device, wherein the internal magnetic control device comprises a housing unit, a driving unit, two swing arms and two sets of magnetic elements, wherein the driving unit is arranged at the housing unit; a pivoting end of each of the swing arms is rotatably mounted at the housing unit; a driven end of each of the swing arms is rotatably connected to the driving unit; the two sets of the magnetic elements are respectively arranged at each of the swing arms; wherein the flywheel is rotatably arranged around the internal magnetic control device, wherein the speed measuring device comprises a sensing element and an acting member.