Internal Magnetic Flywheel Assembly for Wider Resistance Control
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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 a speed measuring device, featuring a magnetic control disk coaxially disposed in the inertial flywheel, and a sensing element and acting member for precise rotation speed measurement, along with an adjusting device integrating magnetic resistance through a motor, driving mechanism, rotating wheel, and symmetrically arranged connecting rods.
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 is adjusted, but the adjustable range is small and the resistance difference is not obvious
Solution Approach 1:
The patent employs a dynamic resistance adjustment mechanism where the magnetic control device can move along the flywheel's rotation path, changing the magnetic field strength dynamically. This allows for continuous resistance variation rather than fixed discrete levels, significantly expanding the adjustable range and making resistance changes more perceptible to users during exercise.
Solution Approach 2:
The patent changes the magnetic field parameters by adjusting the distance between magnetic elements and the flywheel, as well as modifying the magnetic field distribution pattern. This enables continuous resistance adjustment across a wider range, making the resistance difference between levels more obvious and improving user experience.
2Measurement precision
If the resistance adjustment mechanism is designed with multiple parts for precise control, then the resistance can be adjusted, but the structure becomes complex and the failure rate increases
Solution Approach 1:
The patent combines the magnetic control device, adjustment mechanism, and sensing elements into an integrated assembly that moves as a single unit along the flywheel. This merging of functions reduces the number of separate parts and coordination interfaces, simplifying the overall structure while maintaining precise resistance control capability.
Solution Approach 2:
The magnetic control device serves multiple functions simultaneously: it generates the magnetic field for resistance, houses the sensing elements for speed measurement, and includes the adjustment mechanism. This multi-functionality reduces the need for separate dedicated components, thereby reducing structural complexity and potential failure points.
3Force
If the internal magnetic control device is positioned close to the flywheel, then the magnetic resistance increases and fitness intensity increases, but the adjustment range is limited
Solution Approach 1:
The patent extends the resistance adjustment from a single linear distance parameter to multiple dimensions: radial distance from the flywheel, tangential position along the rotation path, and magnetic field distribution pattern. This multi-dimensional adjustment capability dramatically expands the resistance level variation range while maintaining high magnetic resistance when needed.
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 resistance adjustment range, improves exercise experience by ensuring consistent damping and dynamic stability, reduces maintenance costs, and provides accurate speed measurement directly on the flywheel.
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 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.