Magnetic Exercise Tool With Spherical Shaft for 3D Motion
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Solution Overview
Problem
Conventional exercise tools limit motion and muscle training variations, especially when stationary, making it difficult to perform dynamic exercises involving wrists and ankles, and restricting the range of motion.
Innovation Solution
An exercise tool with a base that contacts a use surface, a magnetically detachable movable part supported by a three-dimensionally movable unit, and an attachment mechanism allowing for direct or indirect attachment to hands or feet, enabling flexible three-dimensional movement and wider exercise variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the exercise tool uses a fixed plate-like member that slides only in one direction, then the structure is simple and stable, but the motion of hands and feet is limited and exercise variations are restricted
Solution Approach 1:
The patent transforms the static plate-like member into a dynamic system by introducing a spherical-surface shaft that enables multi-directional movement. The movable part can now move not only forward and backward but also rotate and tilt in three dimensions, allowing users to perform diverse exercises including wrist and ankle movements while maintaining a relatively simple overall structure.
Solution Approach 2:
The invention adds rotational and tilting dimensions to the originally one-dimensional sliding motion. By incorporating the spherical-surface shaft mechanism, the movable part gains freedom to move in multiple directions (forward/backward, rotation, tilting), effectively transitioning from 1D to 3D motion capability without significantly increasing structural complexity.
2Reliability
If the foot placing plates are stopped on the floor surface, then stability is improved for static muscle training, but dynamic muscle training involving wrist and ankle motion becomes difficult
Solution Approach 1:
The patent resolves this contradiction by making the support mechanism dynamic rather than static. The spherical-surface shaft allows the movable part to remain stable when stopped (providing reliability for static training) while simultaneously enabling free rotation and tilting movements when needed (providing adaptability for dynamic wrist and ankle exercises).
Solution Approach 2:
The invention changes the degree of freedom parameter of the support mechanism. By using a spherical-surface shaft instead of a fixed hinge, the system can dynamically adjust its movement constraints, allowing it to be stable in one position for static training while permitting multi-directional motion for dynamic exercises.
3Stability of the object's composition
If the movable part is rigidly fixed to the base, then structural stability is improved, but the range of three-dimensional movement is reduced
Solution Approach 1:
The patent applies dynamics by replacing rigid fixation with a spherical-surface shaft connection. This allows the movable part to maintain structural stability through controlled support while enabling extensive three-dimensional movement including forward/backward motion, rotation, and tilting, effectively resolving the conflict between stability and range of motion.
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
Enables wide variations in exercises and muscle training even when stationary, allowing for dynamic movements and increased range of motion, including wrist and ankle exercises, while maintaining stability and control.
Implementation Method 1
the three-dimensionally movable support unit includes a spherical-surface shaft provided to one of the base and the movable part and a recessed-surface bearing provided to another one of the base and the movable part and designed to be slidably fitted to the spherical-surface shaft
Implementation Method 2
an elastic member coupling the base and the movable part to each other, the elastic member being configured to buffer movement of the movable part and to restore a relative position of the movable part with respect to the base to a reference position
Data Source
AI summary
This invention includes: a base having a contact part that is in contact with a use surface; a movable part magnetically and detachably held above the base; a three-dimensionally movable support unit configured to support the movable part that is held by the base, in such a manner as to allow the movable part to move three-dimensionally and flexibly; and an attachment part via which the movable part is detachably attachable to a hand or a foot in a direct or indirect manner.