Multi-Axis Swivel Backrest for Abdominal Exercise
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Solution Overview
Problem
Existing abdominal exercise machines are not economically or effectively designed to facilitate active support for high-strength movements, often being heavy and expensive, and primarily designed for simple pivoting motions.
Innovation Solution
An exercise machine with a back support that can move in a multi-axis swivel manner, allowing users to exert push pressure via handle bars to induce effective abdominal muscle exercise, featuring a base frame, backrest assembly, and seat assembly with pivot joints for rotational movements around multiple axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional abdominal machines are designed for simple pivoting movements, then the device complexity is reduced, but the exercise effectiveness for abdominal muscles is insufficient
Solution Approach 1:
The backrest assembly is designed with multiple pivot joints that enable dynamic multi-axis rotational movements rather than simple fixed-axis pivoting. This allows the backrest to move along a complex trajectory that effectively engages abdominal muscles while maintaining reasonable device complexity through the use of standardized pivot joint components
Solution Approach 2:
The backrest assembly is segmented into multiple rotational degrees of freedom through separate pivot joints, each contributing to the overall multi-axis movement. This segmentation allows independent optimization of each rotational axis while achieving complex motion patterns that improve exercise effectiveness
2Reliability
If multipurpose exercising machines are designed to provide active support for high strength movements, then the exercise effectiveness is improved, but the device complexity and cost increase
Solution Approach 1:
The exercise machine is designed with a multi-functional backrest assembly that can perform multiple exercise functions through different combinations of pivot joint movements. This universal design allows a single device to provide active support for various abdominal exercises without requiring multiple separate machines, thereby improving exercise effectiveness while controlling overall device complexity
Solution Approach 2:
Multiple functional elements are merged into the backrest assembly, including multiple pivot joints, handle bars, and support structures, all integrated into a single cohesive unit. This merging reduces the need for multiple separate devices while providing comprehensive active support for high-strength abdominal movements
Data Source
AI summary
An exercise machine applicable for strengthening a user's abdominal muscles is described. The exercise machine can include a base frame, a backrest assembly and a seat assembly. The base frame can have side members and a crossbar member to provide floor support. The backrest assembly may be rotablely coupled with the base frame to swivel with simultaneous rotational movements around two or more axes of rotations. The backrest assembly can include two or more pairs of pivot joints. Each pair of pivot joints may define one of the axes of rotation. Handle bars may be mounted substantially transverse to the axes of rotation. The seat assembly may be affixed to the base frame to allow a user sitting on a seat pad of the seat assembly to cause the swiveling of the backrest assembly via hand pushes on the handle bars.