Eddy-Current Resistance Mechanism for Quiet Exercise Equipment
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Solution Overview
Problem
Existing exercise apparatuses face challenges in developing a resistance generating mechanism that is both low in noise and has a long lifespan, while also requiring easy adjustment to meet different user demands.
Innovation Solution
The exercise apparatus incorporates an eddy-current resistance assembly with a magnetic resistance set and a linkage member connected via a linking assembly, allowing for adjustable resistance generation through a magnetic field-induced eddy current mechanism, which is protected from dust and damage by main covers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional resistance generating mechanism is used, then the exercise apparatus can provide resistance training, but it generates high noise and has limited lifespan
Solution Approach 1:
The patent replaces the traditional mechanical resistance mechanism (which involves friction, contact, and wear) with an eddy current resistance mechanism that uses electromagnetic induction. The magnetic resistance set generates a magnetic field that induces eddy currents in the conductive operating member, creating resistance without physical contact. This substitution eliminates mechanical wear and significantly reduces noise generation while extending the lifespan of the resistance mechanism.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the user's motion and the resistance force. Instead of direct mechanical contact, the magnetic resistance set creates a magnetic field that interacts with the conductive operating member to generate eddy currents. This intermediary field-based approach allows for smooth, contactless resistance generation that is inherently quieter and more durable than mechanical systems.
2Adaptability or versatility
If the resistance mechanism is fixed, then the structure is simple, but it cannot meet different user requirements for varied exercise intensity
Solution Approach 1:
The patent implements a dynamic resistance mechanism where the magnetic resistance set can be adjusted to change the strength of the magnetic field. By varying the magnetic field intensity, users can adjust the resistance level to match different exercise intensities and personal requirements. This dynamic adjustability is achieved through controllable magnetic components that can modify their field strength without requiring complex mechanical reconfiguration.
Solution Approach 2:
The patent enables resistance adjustment by changing the parameters of the magnetic field (such as field strength or flux density) rather than altering the physical structure. The magnetic resistance set can modify electromagnetic parameters to provide variable resistance levels, allowing the same apparatus to accommodate different user needs and exercise intensities without adding significant structural complexity.
3Reliability
If the resistance mechanism is exposed, then it is easy to access, but it is vulnerable to dust and damage
Solution Approach 1:
The patent employs protective covers or enclosures made of flexible or transparent materials that shield the magnetic resistance set from dust, moisture, and physical damage. These protective elements allow the resistance mechanism to remain accessible for operation while being protected from environmental contaminants. The covers can be designed to allow user interaction (such as adjusting resistance) without compromising the protective barrier.
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
This solution provides a quiet, durable, and adjustable resistance mechanism that effectively meets user demands for varied exercise intensity, enhancing the exercise experience by ensuring low noise and long apparatus lifespan.
Implementation Method 1
an eddy-current resistance assembly which includes a magnetic resistance set and a linkage member
Implementation Method 2
magnetic resistance set and a linkage member connected via a linking assembly, allowing for adjustable resistance generation through a magnetic field-induced eddy current mechanism
Data Source
AI summary
An exercise apparatus includes a main frame, two operating members, a linking assembly and an eddy-current resistance assembly. The operating members are pivotally connected to two sides of the main frame. The linking assembly is disposed on the main frame and connected to the two operating members, wherein the two operating members are linked up with and reversely reciprocated to each other via the linking assembly. The eddy-current resistance assembly is linked with one of the two operating members for generating a resistance.