Foldable Treadmill Linkage for Stable One-Step Folding
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Solution Overview
Problem
Conventional foldable treadmills require separate folding operations for supporting posts and handle bars, leading to instability and shaking during use due to poor structural design.
Innovation Solution
A foldable treadmill with a rotational shaft, supporting posts, handle bars, and wire pulling mechanisms that allow linked folding operations, featuring seats with position limiting holes and pins to stabilize the structure, along with a buffering cylinder for controlled folding and unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If separate folding operations are used for supporting posts and handle bars, then the folding mechanism is simple, but the structure becomes unstable and shakes during use
Solution Approach 1:
The patent combines the folding operations of supporting posts and handle bars into a single linked folding action. When the user folds the handle bar, it simultaneously drives the supporting post to fold against the base through the wire pulling mechanism, achieving coordinated folding of multiple components through one operation.
Solution Approach 2:
The wire pulling mechanism acts as an intermediary between the handle bar and supporting post. The wire connects the handle bar to the pin on the supporting post, transmitting the folding motion from the handle bar to the supporting post, enabling coordinated movement without direct mechanical linkage.
2Stability of the object's composition
If the sleeve is positioned only on a single seat, then the device complexity is reduced, but the supporting posts shake and wobble when in use
Solution Approach 1:
The patent divides the folding mechanism into multiple independent segments: separate wire pulling mechanisms for each supporting post, with pins and seats positioned at different locations. This segmentation allows each component to be optimized independently while contributing to overall stability.
Solution Approach 2:
The patent applies different positioning strategies for the sleeves and seats at different locations along the rotational shaft. The first seat is positioned closer to the base while the second seat is positioned farther away, creating local variations in the folding mechanism that improve overall structural stability.
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
Ensures stable and reliable operation by preventing shaking and wobbling of supporting posts and handle bars, enhancing user experience and safety during use.
Implementation Method 1
rotation of the handle bar pulls a steel wire to drive a pin away from a sleeve so that a rotational shaft can be rotated
Implementation Method 2
a buffering cylinder for controlled folding and unfolding
Data Source
AI summary
A foldable treadmill having a base and a rotational shaft whose two ends are fixed with supporting posts respectively; handle bars are mounted to top ends of the supporting posts respectively; two seats are fixed on the rotational shaft and correspond to the support posts; one end of each wire is connected with a corresponding handle bar, another end of each wire is connected with a corresponding pin; rotation of the handle bars to achieve folding of the treadmill drives the wires to pull the pins; each seat has a position limiting hole which a corresponding pin is removably inserted, so that the two seats together with the rotational shaft achieve a fixed state or a rotatable state with respect to the base.