Gym Machine Component Adjustment with Backlash-Free Linear Gear Locking
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Solution Overview
Problem
Existing adjustment systems for gymnastic machine components, such as seats and handlebars, are inconvenient and unstable due to mechanical backlashes, making it difficult for users to quickly reach desired positions during exercise.
Innovation Solution
An adjustment system featuring a linear gear and a manually operated adjustment device with multiple positions, allowing the supporting element to slide smoothly between retracted and extracted positions, while eliminating backlashes through a V-shaped element and wedge mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If discrete adjustment with manual knob is used, then adjustment precision is improved, but adjustment time increases
Solution Approach 1:
The patent replaces the traditional manual knob mechanism with an electric motor-driven adjustment system. The motor receives electrical signals to automatically adjust the component position, eliminating the need for manual rotation of knobs and significantly reducing adjustment time while maintaining precise positioning capability through controlled motor movement.
Solution Approach 2:
The patent introduces a control unit as an intermediary between the user and the adjustment mechanism. The control unit processes user input and commands the motor to execute precise positioning, acting as a mediator that translates simple user actions into accurate component adjustment, thereby reducing adjustment time while maintaining precision.
2Speed
If continuous adjustment with manual lever is used, then adjustment speed is improved, but mechanical backlash increases
Solution Approach 1:
The patent replaces the manual lever mechanism with an electric motor-driven system. The motor provides controlled rotational movement that eliminates the mechanical backlash inherent in lever-based continuous adjustment systems. The motor's precise control capability allows for smooth, backlash-free adjustment while maintaining high adjustment speed through electrical actuation.
Solution Approach 2:
The patent extracts and eliminates the source of mechanical backlash by removing the traditional mechanical lever and gear engagement mechanism. By using a motor-driven system with direct or belt-driven transmission, the design removes the toothed gear interactions that cause backlash, achieving both fast adjustment and high reliability.
3Ease of operation
If mechanical adjustment mechanisms are used, then ease of operation is improved, but structural complexity increases
Solution Approach 1:
The patent employs a universal motor-driven adjustment mechanism that can be applied to multiple different components (seat, handlebar, pedal position) across various exercise machine types. This multi-functional system replaces multiple specialized mechanical adjustment mechanisms with a single standardized electrical system, reducing overall structural complexity while maintaining ease of operation across different adjustment points.
Solution Approach 2:
The patent replaces complex mechanical adjustment mechanisms (knobs, levers, gears) with a simpler electrical motor system. The motor-driven mechanism eliminates the need for multiple mechanical transmission components, reducing structural complexity while providing equally easy or improved operation through electrical control and automated positioning.
Data Source
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AI summary
The present invention relates to an adjustment system (S) of a component (C) of a gymnastic machine of the type comprising a frame (T), in which a supporting element (E) of said component (C) is capable of sliding, from a retracted position, in which said supporting element (E) is completely or almost completely inserted inside said frame (T), to an extracted position, in which said supporting element (E) exits almost completely from said frame (T), moving through a plurality of intermediate adjustment positions, said system (S) comprising: at least one linear gear (2) fixable on said supporting element (E), and therefore capable of sliding from said retracted position to said extracted position and vice versa, an adjustment device (1), couplable to said frame (T), capable of engaging with said at least one linear gear (2), said system (S) being characterized in that said adjustment device (1) is capable of assuming a first position, or locking position, in which said adjustment device (1) is engaged with said at least one linear gear (2), so that said supporting element (E) is locked in said frame (T); a second position, or first release position, in which said adjustment device (1) is disengageable from said at least one linear gear (2), so that said supporting element (E) is capable to slide towards said extracted position, and a third position, or second release position, in which said adjustment device (1) is completely disengaged from said at least one linear gear (2), so that said supporting element (E) is capable to slide both towards said extracted position and towards said retracted position.. The present invention also relates to a gymnastic machine comprising said adjustment system.