Lifting mechanism
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Solution Overview
Problem
Existing lifting mechanisms for tables, such as those using gas spring mechanisms, face hindrance from high friction forces due to fixed connections between rolling friction assemblies and sleeves, which impede smooth lifting.
Innovation Solution
A lifting mechanism comprising an outer tube, an inner tube, and a spring using fluid as a damping medium, along with a floating guiding assembly that moves axially relative to both tubes under friction force, reducing friction resistance and enabling smoother lifting by creating a speed difference between the guiding assembly and the inner tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rolling friction assemblies are fixedly arranged on the first sleeve and second sleeve, then the guiding function is provided, but the friction force between the sleeves becomes large which hinders lifting
Solution Approach 1:
The patent applies the dynamics principle by making the guiding assembly movable rather than fixed. The guiding assembly is allowed to move along with the second sleeve during lifting, transforming the static friction problem into a dynamic solution where the guiding assembly adapts its position to reduce friction resistance while maintaining guiding functionality.
Solution Approach 2:
The guiding assembly serves as an intermediary element between the first sleeve and second sleeve. By introducing this intermediate component that can move independently, the patent reduces direct friction contact between the sleeves while still providing the necessary guiding function, effectively mediating the interaction between the two sleeves.
2Force
If the rolling friction assembly moves along with the second sleeve, then the friction force is reduced, but the connection complexity between the assembly and sleeves increases
Solution Approach 1:
The patent applies segmentation by dividing the guiding function into separate components: the guiding assembly is separated from the sleeves and can move independently. This segmentation allows the guiding assembly to move along with the second sleeve without requiring complex fixed connections, reducing overall connection complexity while maintaining the desired friction reduction effect.
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 mechanism reduces frictional resistance, allowing the inner tube to lift more smoothly and stably, as the floating guiding assembly moves at a slower speed relative to the inner tube, while the outer tube remains fixed, thereby enhancing the lifting efficiency.
Implementation Method 1
a spring using fluid as a damping medium to achieve a lifting effect
Implementation Method 2
the floating guiding assembly axially moves relative to the inner tube and the outer tube under a friction force
Data Source
AI summary
The invention relates to a lifting mechanism which uses fluid as a damping medium to form a driving force. It has an outer tube, an inner tube and a spring using fluid as a damping medium to achieve a lifting effect, one end of the inner tube being inserted in the outer tube from one end of the outer tube, and one end of the spring being positioned in the outer tube; the other end of the spring penetrating through the inner tube and being connected with the inner tube.