Cordless Treadmill Flywheel Generator for Smooth Belt Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cordless treadmills are bulky, difficult to assemble, and pose challenges for lightweight users in starting and stopping the belt due to high initial resistance.
Innovation Solution
A self-propelled treadmill design featuring an integrated flywheel generator and gearing system, along with sensors to detect deck deflection, provides smooth starting and stopping, and includes a variable impact absorption system to adjust for user weight and a visual feedback system for safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional cordless treadmill uses a simple belt system without flywheel, then the device is lighter and simpler, but the initial resistance is high and it is difficult for lightweight users to start and stop the belt
Solution Approach 1:
The flywheel is pre-accelerated to a high speed before the user needs to start or stop the belt. This preliminary action stores kinetic energy that helps the belt start and stop smoothly, reducing the effort needed from lightweight users without adding complex control systems.
Solution Approach 2:
The system changes the rotational inertia parameter by introducing a flywheel with specific mass and radius of gyration. This parameter change allows the belt to maintain smoother acceleration and deceleration characteristics, improving ease of operation for users of different weights.
2Strength
If a conventional cordless treadmill uses a bulky frame design, then the structure is more robust, but the assembly becomes difficult and time-consuming
Solution Approach 1:
The frame is divided into multiple segments or modules that can be assembled together using simple connection mechanisms. This segmentation maintains structural robustness through proper joint design while significantly improving ease of assembly, allowing users to put together the treadmill without specialized tools or complex procedures.
Solution Approach 2:
The frame design incorporates features that allow components to be assembled at the same elevation level, eliminating the need for complex alignment procedures or specialized assembly positions. This equipotentiality approach simplifies the assembly process while maintaining structural integrity.
3Adaptability or versatility
If a cordless treadmill lacks impact absorption features, then the device is simpler and lighter, but it cannot accommodate users of all weights smoothly
Solution Approach 1:
The impact absorption system uses dynamic elements such as springs or dampers that automatically adjust their stiffness and damping characteristics based on the user's weight and walking/running style. This dynamic adaptation allows the system to accommodate users of all weights smoothly without requiring complex sensors or adjustable mechanisms.
Solution Approach 2:
The system changes the mechanical properties of the deck support structure by incorporating elastic elements with specific stiffness parameters. This parameter change allows the deck to deflect appropriately under different user weights, providing smooth operation and impact absorption across a wide range of user weights.
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 solution enables smooth operation for users of all weights, reduces assembly complexity, and enhances safety with automatic stopping and visual feedback, while generating electricity for powering features like a control console.
Implementation Method 1
an integrated flywheel generator and gearing system
Implementation Method 2
sensors configured to detect an amount of deflection of a treadmill deck
Data Source
AI summary
A cordless treadmill including a frame, a belt system, and a drop-in cartridge is disclosed. The cartridge includes a plurality of staggered rollers configured to provide tactile feedback to the user. The frame is adapted to receive the belt system and the cartridge as they are lowered into the frame, and the frame is adapted to place the belt of the belt system into tension as the belt system is lowered into the frame. An integrated flywheel generator system provides smooth operation of the treadmill and generates electricity to power additional systems.