Foot Training Device with Replaceable Elastic Projections
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Solution Overview
Problem
Conventional foot training devices lack a simple structure that allows for easy adjustment of training load, often requiring multiple elastic members or complex structures to change the magnitude of the load, and there is a lack of devices specifically designed for strengthening foot muscles.
Innovation Solution
A foot training device with a central fulcrum and four projections made of plate-shaped or rod-shaped elastic members, where at least two projections have different lengths, flexural moduli, or cross-sectional areas, allowing for easy variation of the training load by selecting the projection used during exercise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a heavy weight is applied to the training device during use, then the training load magnitude can be increased, but the structure must be made strong enough to resist the heavy weight, which prevents replacement of elastic members
Solution Approach 1:
The training device is divided into a stationary base and multiple detachable elastic members. The elastic members can be independently replaced without affecting the base structure, allowing load adjustment while maintaining structural integrity for heavy weights.
Solution Approach 2:
Different elastic members with varying flexural moduli are provided to change the training load magnitude. By selecting elastic members with appropriate stiffness parameters, the device can accommodate different weight loads while the base structure remains unchanged and sufficiently strong.
2Force
If multiple elastic members are prepared to change the training load magnitude, then the load can be adjusted, but it becomes not easy to change the magnitude of the load
Solution Approach 1:
The device allows dynamic adjustment of training load by enabling users to swap elastic members as needed. The detachable design makes it easy to change from one elastic member to another, facilitating flexible load adjustment during different training phases.
Solution Approach 2:
The base structure is designed with universal compatibility to work with multiple types of elastic members. This multi-functionality allows a single base to accommodate various elastic members with different properties, simplifying the process of changing training load magnitude.
3Ease of operation
If a friction member is employed to easily change the load, then the load can be easily adjusted, but the structure becomes complex compared to traditional designs
Solution Approach 1:
The invention extracts the load adjustment function from the base structure and places it in the replaceable elastic members themselves. Each elastic member is pre-designed with specific properties, so adjusting the load simply requires swapping members rather than modifying the base structure with additional friction or adjustment mechanisms.
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 device provides a simple structure for easily changing the training load and effectively strengthens foot muscles, particularly the transverse arch and medial longitudinal arch, by allowing users to select from various levels of load and methods of use.
Implementation Method 1
a rod-shaped elastic member such as a coil spring have been used for strength training of the arms and the like. Such training devices are used to build up muscle strength by bending and stretching the elastic member while the elastic force of the elastic member acts as a load.
Data Source
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AI summary
Provided are a foot training device having a simple structure and making it possible to easily change the magnitude of the load, and a method for training a foot using the training device. A training device 10 includes a fulcrum placed at a center, four projections 111, 112, 121, and 122 projecting in different directions from the fulcrum 40, each of the four projections having, at least in a portion thereof, elastic members 20 and 21 that are bendable in a bending direction. The training device is configured to be used to improve foot muscle strength by bending and stretching the elastic members 20 and 21. At least two of the four projections have different degrees of elasticity in flexure as determined when a force is applied to a distal end of each of the at least two projections to bend the elastic members. The four projections project in cross directions from the fulcrum 40 at the center, and, for each pair of projections that oppose each other across the fulcrum 40, the projections are arranged on a straight line. None of the four projections has an annular structure.