Alternating Arm Leg Exercise Device Linkage System
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Solution Overview
Problem
Conventional exercise devices for alternating arm and leg movement are complex, apply high intensity, and pose a risk of injury, particularly to the ankles, making them unsuitable for safe and low-intensity rehabilitation exercises.
Innovation Solution
A simplified exercise device with a base, hand driving member, connection rod, and linkage system that allows for alternating active and passive movements of arms and legs, reducing the need for strong force and minimizing pressure on joints, featuring a pivotally connected hand driving member, leg driving member, and adjustable linkage for customizable exercise intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional exercise machines use strong pull forces, then exercise effectiveness is improved, but pressure on user ankles increases causing injury risk
Solution Approach 1:
The patent inverts the conventional force application direction by using a pushing motion instead of pulling. The foot engagement member pushes the user's foot forward during exercise, reversing the typical pull-based mechanism. This inversion eliminates the need for strong anchoring at the ankle joint while maintaining exercise effectiveness, directly resolving the contradiction between force effectiveness and ankle pressure.
2Power
If conventional exercise machines provide high exercise intensity, then training effectiveness is improved, but safety decreases due to high injury risk
Solution Approach 1:
The patent implements dynamic adjustment capabilities through adjustable foot engagement members and variable resistance mechanisms. Users can dynamically adjust the exercise intensity to match their rehabilitation needs, allowing high power output when capable while maintaining safety through adjustable limits. This dynamic adaptability resolves the contradiction between exercise intensity and safety by enabling personalized intensity control.
3Adaptability or versatility
If conventional exercise machines use complex mechanisms, then functional capability is improved, but device complexity increases
Solution Approach 1:
The patent divides the exercise machine into modular functional segments: a base structure, independently adjustable foot engagement members, separate resistance mechanisms, and configurable linkage systems. Each segment can be adjusted or replaced independently, providing high functional capability without requiring a monolithic complex mechanism. This segmentation allows versatility while keeping individual components simple and manageable.
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 safe, low-intensity, and effective workout by allowing users to perform alternating movements that engage both arms and legs, with adjustable resistance to suit individual needs, reducing the risk of injury and promoting rehabilitation through repetitive active and passive exercises.
Implementation Method 1
One end of the hand driving member is adapted to be rotated at the base and one end of the leg driving member is also adapted to be rotated at the base
Implementation Method 2
a set of linkage comprising at least one first rod and at least one second rod... The set of linkage enables the hand driving member and the leg driving member to link and move with each other
Data Source
AI summary
An exercise device for alternating movement of arms and legs by which users perform alternating active exercises and passive exercises repetitively is revealed. The exercise device includes a base, a hand driving member, and a leg driving member. Both the hand and leg driving member are pivotally connected to the base while the leg driving member is arranged under the hand driving member. One end of the hand driving member and one end of the leg driving member are configured to be pivotally rotated on the base. The hand and leg driving members are pivotally connected by a linkage. By the pivotal connections of the above parts, the hand and leg driving members are linked and moved with each other so as to lift up or press down arms and legs for stretching. The stretching of arms and legs also generates pressure on the abdomen of the user to exercise his or her abdomen.