Foot-Attached Adjustable Weights for Space-Saving Lower Body Training
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Solution Overview
Problem
Existing weight lifting machines and systems are expensive, bulky, require significant maintenance, and occupy large spaces, making them impractical for home use and public gyms, especially during pandemics, and they restrict user movement, necessitating multiple machines for effective lower body and core workouts.
Innovation Solution
An adjustable lower body fitness device that attaches to the user's foot, featuring a body attachment portion and adjustable weight portion, allowing incremental weight adjustment through mechanisms like slot and selection plate, hole and pin, or screw and bolt, enabling versatile and space-efficient workouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional weight lifting machines are used for lower body exercises, then effective strength training is achieved, but the device size and space requirements increase significantly
Solution Approach 1:
The traditional single large leg lift machine is segmented into multiple smaller resistance devices, each targeting specific muscle groups (quadriceps, hamstrings, calves). These segmented devices can be distributed throughout a space rather than requiring one large machine to occupy a concentrated area, reducing the footprint while maintaining comprehensive lower body coverage
Solution Approach 2:
Each resistance device is designed to be multi-functional, serving multiple purposes: providing resistance for different exercises, accommodating various user skill levels through adjustable resistance, and potentially serving different muscle groups. This universality reduces the total number of devices needed, thereby reducing overall space requirements while maintaining exercise effectiveness
2Reliability
If traditional leg lift machines with pulley mechanisms are used, then lower body strength training is provided, but the device complexity and maintenance requirements increase
Solution Approach 1:
The complex pulley mechanisms traditionally integrated into leg lift machines are extracted and replaced with simpler resistance mechanisms. The patent uses direct resistance applications such as weight stacks, spring mechanisms, or elastic bands that eliminate the need for pulleys, cables, and associated friction points, thereby reducing mechanical complexity while preserving the core function of providing controlled resistance for strength training
Solution Approach 2:
The invention employs simpler, more durable resistance mechanisms that are easier to manufacture and maintain. By using straightforward weight stacks or elastic resistance systems rather than complex pulley assemblies, the devices become more robust, easier to repair or replace, and less prone to mechanical failure, effectively treating the resistance mechanism as a replaceable component rather than a permanent complex assembly
3Reliability
If traditional bench and seat-based leg lifting machines are used, then lower body and core development is achieved, but the cost and maintenance requirements increase
Solution Approach 1:
The comprehensive leg lift machine is segmented into multiple smaller, specialized resistance devices. Each device focuses on a specific muscle group or movement pattern, allowing for simpler construction of individual units. This segmentation reduces the overall manufacturing complexity and cost per device, while the collective set of devices provides comprehensive lower body and core development coverage
Solution Approach 2:
Instead of building one large, expensive machine that attempts to do everything, the approach is inverted: multiple small, inexpensive devices are created, each optimized for a specific function. This inversion of the design philosophy allows for simpler manufacturing processes, lower material costs, and easier assembly for each individual device, while the aggregate system delivers comprehensive fitness benefits
4Reliability
If separate leg lift machines for front and back of legs are used, then comprehensive lower body workout is provided, but the space requirements and device quantity increase
Solution Approach 1:
Each resistance device is designed with universal applicability, capable of targeting multiple muscle groups through different exercise variations. For example, a single device can be used for quadriceps work in one configuration and hamstring work in another, eliminating the need for separate dedicated machines for each muscle group. This multi-functionality reduces the total number of devices and overall space requirements while maintaining comprehensive workout coverage
Solution Approach 2:
The devices incorporate dynamic adjustment capabilities, allowing users to modify the resistance direction, magnitude, and application point to target different muscle groups. This dynamic versatility enables a single device to replace multiple static devices, reducing space requirements while providing comprehensive lower body workout options for front and back of legs
Data Source
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AI summary
An adjustable lower body fitness device (100) attaches to the user's foot using a body attachment portion (101) and includes an integrated and adjustable weight portion (103) that can be set to a desired weight by adding or subtracting weight increments (105). Once a user attaches the adjustable lower body fitness (100) device to the user's foot using a body attachment portion (101), the entire adjustable lower body fitness device (100) becomes an extension of the user's leg that allows users to effectively and efficiently exercise their lower body and core while also providing flexibility, minimal floor space/storage requirements, simplicity, relatively low cost, and minimal maintenance requirements.