Eccentric Column Structure for Waist Twisting Exercise Machine
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Solution Overview
Problem
The existing waist twisting exercise machines have structural weaknesses due to welding, leading to reduced stability and safety, and increased processing costs and steps.
Innovation Solution
An eccentric column structure with integrally formed straight bar portions and a bending portion, connected through the bending portion but not on a common axis, is used, eliminating the need for welding and enhancing strength by using bearing members and protecting covers for secure assembly between the base and cushion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If welding or assembling is used to connect the shaft column and vertical pipe to the crank, then the crank can be manufactured, but the processing steps and cost increase
Solution Approach 1:
The shaft column and vertical pipe are merged into a single integrally formed crank structure, eliminating the need for separate assembly steps and reducing manufacturing complexity while maintaining structural functionality
2Ease of manufacture
If welding is used to connect the shaft column and vertical pipe to the crank, then the crank can be assembled, but weak points of strength are formed at the welds
Solution Approach 1:
The crank is formed as a single integral structure without weld joints, eliminating weak points at connection areas and significantly improving the overall strength and load-bearing capacity of the component
3Ease of manufacture
If the crank has welded seams, then it can be manufactured with separate parts, but the supporting capacity is reduced and the machine becomes prone to breakage
Solution Approach 1:
The crank structure is merged into a single piece with no seams or joints, eliminating potential failure points and dramatically improving the reliability and stability of the exercise machine during use
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 eccentric column structure provides a comfortable ergonomic posture, enhances the machine's strength, and prolongs its service life and safety by avoiding assembly seams and structural weaknesses, allowing for smooth rotation and effective waist twisting exercises.
Implementation Method 1
At least one bearing member is disposed inside the combination hole... At least one bearing member is disposed inside the binding hole
Data Source
AI summary
An eccentric column structure of a waist twisting exercise machine is provided which includes a base, a cushion, and an eccentric column assembled between the base and the cushion. The cushion is supported above the base through the eccentric column, so that the seat height of the cushion is slightly higher than the height of knees of an average adult, thereby enabling riding in a relatively comfortable and ergonomic posture, and enabling exercising movements of rotating and waist twisting by using two feet landing on the ground as points of force application. In addition, the eccentric column is integrally formed by a bending processing of a metal pipe column, which not only avoids the formation of seams during assembly or structural weaknesses derived from welding, but also greatly enhances the overall strength of the structure, thereby being conducive to prolonging the service life and safety of the exercise machine.