Adjustable Buffering Apparatus for Treadmill Shock Absorption

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Solution Overview

Problem

Large treadmills are heavy, occupy more space, and are costly due to increased material usage, posing challenges in terms of safety, reliability, and practicality for home and gym use.

Innovation Solution

A buffering apparatus for treadmills featuring a crossbar with multiple buffer sets of varying elastic blocks that can be positioned to absorb shocks, comprising a crossbar with different elastic coefficients, a helical spring, and a locking mechanism to secure the crossbar's position, allowing for adjustable buffering based on user needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the treadmill frame is made bigger to improve safety and reliability, then the strength and stability are improved, but the weight increases and more space is occupied

Engineering Contradiction:
Improvesafety and reliabilityVSAvoidweight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent applies beforehand cushioning by incorporating a buffering apparatus with elastic blocks and springs that absorb shock before it can damage the frame or cause injury. The buffering blocks are positioned to contact the belt during operation, providing preventive shock absorption that enhances safety without requiring a heavier frame structure.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If the treadmill frame is made bigger to improve safety and reliability, then the strength and stability are improved, but the device occupies more space

Engineering Contradiction:
Improvestrength and reliabilityVSAvoidspace occupation
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The buffering apparatus provides beforehand cushioning through elastic blocks and springs that absorb shock during normal operation, enhancing frame strength and reliability without requiring a larger overall frame structure. This allows the treadmill to maintain compact dimensions while achieving the desired structural integrity through active shock absorption rather than passive size increase.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If more materials are used to make the treadmill bigger for improved safety, then the strength is improved, but the manufacturing cost increases

Engineering Contradiction:
ImprovestrengthVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs beforehand cushioning with a buffering apparatus consisting of elastic blocks, springs, and damping elements that absorb shock during operation. This approach enhances frame strength and safety by actively managing mechanical stresses rather than relying on excessive material usage, thereby reducing manufacturing costs while maintaining or improving structural reliability.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

4Adaptability or versatility

If the buffering apparatus uses multiple buffer sets with different elastic coefficients, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:
Improveadjustable bufferingVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by making the buffering apparatus adjustable through a crossbar that can be positioned at different locations along the frame. The crossbar selectively engages with different buffer sets containing elastic blocks with varying elastic coefficients, allowing the system to dynamically adapt its buffering characteristics based on operational requirements. This provides versatility while maintaining a relatively simple overall structure through modular buffer sets and a straightforward adjustment mechanism.

Inventive Principle:
Principle #15Dynamics

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 buffering apparatus enhances the safety and reliability of treadmills by providing adjustable shock absorption, reducing the weight and space requirements while maintaining effective exercise performance, thus addressing the issues of size and cost associated with larger treadmills.

Implementation Method 1

Each of the buffer sets includes a plurality of buffering blocks made with different elastic coefficients

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a helical spring

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS7713177B2Buffering apparatus
Publication Date: 2010.05.11 LO CHIU HSIANG
  • US7713177B2 patent drawing
  • US7713177B2 patent drawing
  • US7713177B2 patent drawing

AI summary

A treadmill includes an external frame, an internal frame connected to the external frame, a belt in the form of a loop supported on the internal frame and a buffering apparatus for buffering the internal frame. The buffering apparatus includes a crossbar and two buffer sets. The crossbar is rotationally provided on the external frame between various positions. Each of the buffer sets includes a plurality of buffering blocks made with different elastic coefficients so that a selected one of the buffering blocks is brought into contact with the internal frame when the crossbar is in a related one of the positions.