Adjustable Shock-absorbing Elastic Bar for Treadmill Wear Reduction
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Solution Overview
Problem
Conventional treadmills have fixed elasticity in their vibration absorbers, which cannot be adjusted to accommodate different user weights, leading to uneven force distribution and potential wear or tearing, resulting in a decreased shock-absorbing function over time.
Innovation Solution
A treadmill with a shock-absorbing structure featuring a pivotally mounted elastic bar between the frame and support plate, allowing for adjustable contact area and position changes via pull tabs, enabling customizable shock-absorbing effects for varying user weights, and reinforced with fixing sleeves to prevent wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed elasticity vibration absorbers are used, then the structure is simple, but the shock-absorbing function cannot be adjusted for different user weights
Solution Approach 1:
The patent applies the dynamics principle by making the elastic bar movable rather than fixed. The elastic bar can pivot at its ends and change its contact area with the support plate dynamically, allowing the shock-absorbing properties to be adjusted according to different user weights while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent implements parameter changes by allowing the elastic bar to change its effective length and contact area with the support plate. By pivoting the ends of the elastic bar and adjusting the contact area, the shock-absorbing parameters can be modified to suit different user weights without changing the basic structural configuration.
2Adaptability or versatility
If fixed contact area elastic bars are used, then the manufacturing is simple, but the shock-absorbing effect cannot be optimized for different weights
Solution Approach 1:
The patent makes the contact area between the elastic bar and support plate dynamic rather than fixed. The elastic bar can pivot and adjust its contact area with the support plate, allowing optimization of the shock-absorbing effect for different user weights while maintaining ease of manufacture through a simple pivotal connection design.
3Reliability
If vibration absorbers are subjected to unevenly distributed force, then the structure is simple, but the vibration absorbers are easily worn or torn
Solution Approach 1:
The patent applies the local quality principle by allowing different parts of the elastic bar to have different contact areas with the support plate. This enables the force distribution to be optimized locally at the contact points, reducing uneven stress concentration and wear on specific areas of the elastic bar, thereby improving reliability.
Solution Approach 2:
The patent uses dynamics to allow the elastic bar to pivot and adjust its position, which helps distribute forces more evenly across its structure during operation. This dynamic adjustment prevents concentrated stress points that would lead to wear and tearing, extending the service life of the vibration absorbers.
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 adjustable elastic bar system provides customizable shock-absorbing properties, extending the lifespan of the treadmill by allowing users to adjust the shock-absorbing function according to their weight, maintaining optimal performance and preventing wear on the vibration absorbers.
Implementation Method 1
the elastic bar is movable in a horizontal direction and is elastically bendable toward an inner side or an outer side of the support plate
Implementation Method 2
each of the two opposite ends of the elastic bar is pivotally mounted between the frame and the support plate
Data Source
AI summary
A treadmill includes a frame, a support plate mounted on the frame, and a shock-absorbing structure mounted on two opposite sides of the frame. The shock-absorbing structure includes an elastic bar mounted between the frame and the support plate to support the support plate and to provide a shock-absorbing function. The elastic bar is above the frame and under the support plate and has two opposite ends each pivotally mounted between the frame and the support plate. Thus, the elastic bar is movable in a horizontal direction and is elastically bendable toward an inner side or an outer side of the support plate to increase or decrease a contact area of the elastic bar and the support plate and to change the position of the elastic bar relative to the support plate.