Synchronized Pneumatic Table Lift to Prevent Tabletop Tilting
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Solution Overview
Problem
Conventional pneumatic tables with independent multistage lifting devices at each end often result in tabletop tilting during height adjustments due to asynchronous movement.
Innovation Solution
A synchronization mechanism between two legs of a table, utilizing a cable control unit and clutch unit with a guide rod, movable wheel, and rotary wheel, ensures the tabletop is lifted or lowered in a synchronous manner, preventing tilting by engaging and disengaging the inner rods through a cable control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If two independent multistage pneumatic lifting devices are used at each end of the table, then the lifting capability is improved, but the tabletop tilts during height adjustment due to asynchronous movement
Solution Approach 1:
The patent combines two independent lifting devices into a synchronized system by introducing a synchronization mechanism that links the left and right lifting devices through a guide rod and clutch units, ensuring they move together to prevent tabletop tilting
Solution Approach 2:
The patent introduces a guide rod as an intermediary component that connects the two lifting devices and transmits synchronous motion between them, along with clutch units that act as mediators to engage or disengage the synchronization based on operational needs
2Stability of the object's composition
If a synchronization mechanism is added between the two legs, then the tabletop horizontal stability is improved, but the device complexity increases
Solution Approach 1:
The synchronization mechanism employs dynamic clutch units that can engage or disengage based on operational requirements, allowing the system to switch between synchronized and independent lifting modes, thereby managing complexity through conditional operation
Solution Approach 2:
The synchronization mechanism is segmented into modular components including clutch units, guide rods, and connecting assemblies that can be independently manufactured and assembled, reducing overall system complexity through modularity
3Reliability
If the movable wheel is engaged with the rotary wheel, then the height adjustment is fixed and stable, but the adaptability to adjust height is reduced
Solution Approach 1:
The clutch unit employs a movable wheel that can dynamically engage or disengage from the rotary wheel based on operational needs, allowing the system to switch between fixed (engaged) and adjustable (disengaged) states, thereby achieving both stability and flexibility
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 precise, multistep tabletop adjustments without tilting by synchronizing the movement of the inner rods, allowing the tabletop to be fixed at desired heights, thus maintaining horizontal stability.
Implementation Method 1
an elastic member and an engaging hole are provided at the first end
Data Source
AI summary
A lifting device for lifting a table includes two legs, each of the legs includes a pneumatic assembly and an inner rod, the pneumatic assemblies are disposed in the legs, and the inner rods are inserted in the legs and connected to the pneumatic assemblies, so that the pneumatic assemblies drive the inner rods to move up and down. A synchronization mechanism is disposed between the two legs, and has two ends connected to the inner rods by two connecting assemblies, so that the inner rods are driven by the synchronization mechanism to lift or lower the tabletop in a synchronous manner, the synchronization mechanism includes: a cable control unit and a clutch unit controlled by the cable control unit, the cable control unit includes a control handle and a cable which is disposed at the bottom of the tabletop.