Lockable Bilateral User Interface for Strength Training Imbalance Detection
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Solution Overview
Problem
Traditional stationary strength training equipment lacks the ability to differentiate between the strength of the right and left muscle groups, leading to uneven training and mental perception of muscle imbalance, particularly affecting rehabilitation clients with dominant and weaker sides.
Innovation Solution
The equipment features a lockable bilateral user interface with a balancing structure and informing device, allowing users to detect and address imbalances through rotation detection and warning signals, enabling independent or semi-independent operation of each limb.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional stationary strength training equipment uses joint operation for both sides of the body, then the equipment structure remains simple, but the user cannot detect muscle imbalance between right and left sides
Solution Approach 1:
The user interface is segmented into independent right and left side interfaces, each capable of separate operation and measurement. This allows each side to be measured independently while maintaining a relatively simple overall structure, resolving the contradiction between detection precision and device complexity.
Solution Approach 2:
A balancing structure with pivot assembly acts as an intermediary mechanical element that translates muscle force differences into detectable rotational movement. This intermediary mechanism enables imbalance detection without requiring complex electronic sensors or processing systems.
2Reliability
If rehabilitation clients use single handed approach to train weaker side, then training focus on weaker side is improved, but training time increases and strength comparison becomes difficult
Solution Approach 1:
The informing device provides immediate visual or audible feedback when muscle imbalance is detected, allowing users to adjust their training approach in real-time. This feedback mechanism enables efficient bilateral training by showing when each side is equally strong, reducing trial-and-error time and making strength comparison straightforward.
Solution Approach 2:
The locking mechanism assembly allows dynamic switching between locked and unlocked states, enabling users to adjust the balancing structure's freedom of rotation based on training needs. This dynamic control optimizes training efficiency by allowing continuous adjustment during exercise.
3Ease of operation
If locking mechanism assembly is unlocked, then the balancing structure can rotate to indicate imbalance, but the equipment becomes less stable
Solution Approach 1:
The locking mechanism assembly enables dynamic control of the balancing structure, allowing it to be locked in place for stability during certain phases of exercise and unlocked for rotation during imbalance detection. This dynamic switching resolves the contradiction between operational ease and structural stability.
Solution Approach 2:
The locking function is segmented as a separate controllable feature rather than a fixed structural property, allowing independent control of stability and detectability functions. Users can engage the lock when stability is needed and disengage it when detection is required.
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 users to quickly assess and balance strength between right and left muscle groups, allowing for tailored training programs and improved mental perception of muscle equality.
Implementation Method 1
a load detecting strain gauge disposed on the user selectable weights to detect a weight of the user selectable weights being lifted
Data Source
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AI summary
A stationary strength training equipment includes a frame assembly (1), a lockable bilateral user interface (11) installed on the frame assembly (1), a balancing structure (10) connected to the lockable bilateral user interface (11), a plurality of user selectable weights (3) supported by the frame assembly (1) and connected to the balancing structure (10), a load detecting strain gauge (22) disposed on the user selectable weights (3) to detect a weight of the user selectable weights (3) being lifted, and an informing device (19) connected to the lockable bilateral user interface (11) to detect and show a warning signal to a user. The lockable bilateral user interface (11) includes a locking mechanism assembly (6) and a central pivot assembly (7); the balancing structure (10) is able to rotate along the central pivot assembly (7), and the locking mechanism assembly (6) selectively restricts a rotation of the balancing structure (10).