Flywheel Exchange Mechanism for Variable Load Training
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Solution Overview
Problem
Existing physical training apparatuses lack variability in exercise load, limiting user options for different workout intensities.
Innovation Solution
A physical training apparatus with a spindle end portion that allows exchangeable flywheels of different dimensions and weights, secured by a fastening knob with a spring element, enabling easy replacement and adjustment of flywheels without removing the spindle from the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flywheel is fixed to the spindle, then the structure is stable and reliable, but the exercise load cannot be varied
Solution Approach 1:
The flywheel mounting system transitions from a fixed state to a dynamic, adjustable state. The quick-release mechanism allows the flywheel to be easily removed and replaced with different weights, enabling variable exercise loads while maintaining structural integrity during use through the engagement of locking elements.
Solution Approach 2:
The mounting system is divided into separate functional elements: the spindle with mounting interface, the flywheel with attachment features, and the quick-release mechanism with locking elements. This segmentation allows independent optimization of each component for both stability during operation and ease of replacement.
2Force
If the flywheel is made heavy and large, then the exercise load is increased, but the apparatus becomes less portable
Solution Approach 1:
The apparatus transitions from a static configuration with fixed flywheel weight to a dynamic system where flywheel mass can be adjusted. Users can attach heavier flywheels for intense workouts or remove them for portability, allowing the same apparatus to serve both high-force exercise requirements and portable storage needs.
3Ease of operation
If the fastening mechanism is complex, then the flywheel is securely held, but the ease of replacement is reduced
Solution Approach 1:
The locking function is extracted as a separate, simple mechanism from the overall mounting system. The quick-release mechanism uses straightforward locking elements that can be engaged and disengaged with minimal effort, avoiding complex fastening systems while maintaining secure attachment during operation.
4Adaptability or versatility
If the spindle is removed from the housing, then the flywheel can be exchanged, but the structural integrity is compromised
Solution Approach 1:
The flywheel mounting system is segmented into the flywheel itself, the spindle mounting interface, and the quick-release mechanism. This allows the flywheel to be exchanged independently without removing the spindle from the housing, maintaining structural integrity while enabling easy replacement.
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
Enables variable exercising loads by allowing users to easily swap flywheels, providing a range of workout intensities and reducing impact on the spindle, while maintaining a compact and portable design.
Implementation Method 1
the fastening knob includes an associated spring element which resiliently forces the flywheel against the stop
Implementation Method 2
the spring element is a multiwave spring. A multiwave spring, which is known per se, advantageously provides a constant clamping force on the flywheel to force it against the stop
Data Source
AI summary
A physical training apparatus includes a housing, a flywheel mechanism accommodated in the housing, the flywheel mechanism including a spindle, at least one flywheel mounted on the spindle and bearings to support the spindle in the housing, and a windable pull element, such as a pull cord or band, which is arranged to be wound up the spindle and unwound from the spindle. The spindle includes a spindle end portion. The flywheel is exchangeably mounted on the spindle end portion against a stop located on the spindle. A fastening knob is releasably coupled to the spindle end portion and adapted to engage the flywheel and force it against the stop located on the spindle. The housing includes at least on one lateral side a covering lid.