Abdominal Exercise Wheel Triangular Pulley Stability
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Solution Overview
Problem
Existing abdominal exercise wheels are prone to side-turn over on slippery or uneven surfaces, and the smaller elbow support area can lead to detachment of the elbow from the support sheet, posing a safety hazard.
Innovation Solution
The abdominal exercise wheel features a base with an upwardly curved grip rod, three triangularly distributed pulley assemblies for enhanced stability, and increased elbow support sheets for improved safety and grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two groups of parallel pulleys are provided at the bottom of the base, then the device can move smoothly, but the device is prone to side-turn over on slippery or uneven surfaces
Solution Approach 1:
The patent changes the pulley arrangement from a symmetric two-group parallel configuration to an asymmetric three-group triangular distribution. This asymmetric triangular arrangement provides better stability on slippery or uneven surfaces while maintaining smooth movement capability
2Device complexity
If a single elbow support sheet is provided at each side, then the structure remains compact, but the contact surface between the elbow support sheet and the elbow is insufficient
Solution Approach 1:
The patent divides each elbow support into multiple elbow support sheets (first and second sheets) arranged in sequence. This segmentation increases the total contact surface area for elbow support while maintaining a relatively compact overall structure through the layered arrangement
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 redesigned pulley assembly and increased elbow support sheets provide greater stability and safety, reducing the risk of side-turn over and elbow detachment during use.
Implementation Method 1
The pulley assembly includes a pulley seat and a pulley rotatably connected onto the pulley seat
Implementation Method 2
The grip rod is provided thereon with a non-slip sleeve
Data Source
AI summary
An abdominal exercise wheel includes a base provided with a pair of upwardly curved grip rods. The base is provided with three groups of pulley assemblies at a lower part of the base. The pulley assemblies are triangularly distributed below the base. A position of the pulley assemblies enables the pulley assemblies to support the base more stably while reducing side-turn over during use. Each pulley assembly includes a pulley seat and a pulley rotatably connected onto the pulley seat. The base is provided with elbow support members at two sides of the base, respectively. Each elbow support member includes a plurality of elbow support sheets. The plurality of elbow support sheets and corresponding elbow support surfaces are increased to reduce detachment of a user's elbows from the elbow support sheet during use.