Adjustable Stand Gear Mechanism Reduces Spring Elongation
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Solution Overview
Problem
Traditional adjustable monitor stands with springs fail to support heavier monitors due to excessive elongation leading to elastic fatigue and potential failure, as the force provided by the spring is insufficient to manage the weight and size of modern monitors.
Innovation Solution
An adjustable supporting stand is designed with a gear set comprising smaller and larger gears, where the smaller gear turns more than the larger gear, reducing the elongation of the elastic member and thus minimizing elastic fatigue, by using a gear ratio that limits the revolution of the larger gear, thereby reducing the elongation of the elastic member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring is used to support the monitor in traditional adjustable stands, then the stand can provide height adjustment functionality, but the spring experiences excessive elongation with heavier monitors leading to elastic fatigue and potential failure
Solution Approach 1:
A gear set is introduced as an intermediary mechanism between the elastic member and the movable member. The gear set includes a first gear connected to the movable member and a second gear engaged with the first gear, where the second gear has a larger diameter. This intermediary gear mechanism transforms the motion relationship, allowing the elastic member to exert force over a longer arc distance while the movable member travels a shorter linear distance, thereby reducing the elongation cycle of the elastic member and preventing elastic fatigue.
2Force
If the spring force is increased to support heavier monitors, then the support capability is improved, but the elongation of the spring increases further accelerating elastic fatigue
Solution Approach 1:
The invention transitions from a direct linear force transmission system to a rotational dimensional system using gears. The elastic member connects to the second gear which has a larger diameter, creating a rotational motion dimension. When the movable member moves vertically, it rotates the first gear which in turn rotates the second gear, causing the elastic member to elongate and contract in a rotational cycle rather than a direct linear cycle. This dimensional transformation allows the same support force to be achieved with reduced elongation amplitude.
3Reliability
If the elastic member elongation is reduced through gear reduction, then the elastic fatigue is minimized, but the device complexity increases due to the gear set
Solution Approach 1:
The gear set serves multiple functions simultaneously: it acts as a force transmission mechanism, a motion transformation device, and an elongation reduction system. The first gear connected to the movable member provides direct mechanical coupling, while the second gear with larger diameter provides the elongation reduction function. This multi-functional design achieves reliability improvement without requiring separate independent mechanisms for each function.
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
This design extends the lifetime of the elastic member and enhances the reliability of the adjustable supporting stand by reducing the elongation of the elastic member, preventing fatigue and ensuring the stand can support monitors of varying weights and sizes effectively.
Implementation Method 1
the elastic force of the spring
Implementation Method 2
the elastic fatigue of the spring occurs easily with heavier monitor
Implementation Method 3
the gear set has a first gear connected to the supporting holder and a second gear engaged with the first gear
Data Source
AI summary
An adjustable supporting stand includes a main body with a receiving room, a slidable module disposed in the receiving room, a supporting holder assembled on the slidable module, a gear set connected to the supporting holder, and an elastic member disposed on the main body. The gear set has at least one first gear and a second gear, and the first gear is smaller than the second gear. One end of the elastic member is fixed on the main body and another end of the elastic member is connected to the second gear.