Spring-Assisted Lifting Table Spool Assembly for Continuous Adjustment
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Solution Overview
Problem
Conventional manually adjustable lifting tables are slow, physically demanding, and lack continuous height adjustment, often requiring frequent maintenance and posing health risks due to limited adjustment speed and discrete gear settings.
Innovation Solution
A lifting table design featuring a spool assembly with drive and auxiliary wire ropes, a spring tension regulator, and a gear shaper assembly that allows for continuous height adjustment with reduced physical effort, incorporating a self-locking mechanism for safety and precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a screw structure with transmission device is used for manual height adjustment, then the table height can be adjusted, but the adjustment speed is slow and it requires more physical effort
Solution Approach 1:
The patent employs dynamic telescopic leg structures with multiple tubes (inner tube, middle tube, outer tube) that can extend and retract continuously, enabling smooth height adjustment without discrete steps. This dynamic mechanism allows the table to reach any height position within its range, significantly improving adjustment speed and reducing the physical effort compared to traditional screw mechanisms.
Solution Approach 2:
The invention replaces the traditional screw transmission mechanism with a telescopic leg system driven by a winch drum and wire rope arrangement. This substitution eliminates the need for frequent maintenance of screw structures while providing faster, more efficient height adjustment with reduced operational force requirements.
2Adaptability or versatility
If discrete gears or preset jacks are used for height adjustment, then the structure is simple, but only limited discrete height settings are available
Solution Approach 1:
The patent implements continuous height adjustment through telescopic legs with inner, middle, and outer tubes that can extend to any position within their range. This dynamic continuous adjustment system provides unlimited height positions compared to discrete gears, achieving full adaptability while maintaining relatively simple structural design through the use of straightforward telescopic mechanisms.
3Ease of operation
If latch and rotating mechanism are used to change height, then the angle can be adjusted, but the operation is more inconvenient and dangerous
Solution Approach 1:
The invention replaces dangerous latch and rotating mechanisms with a winch drum system controlled by a simple hand crank. The wire rope winds onto the drum, providing smooth and safe height adjustment without the risks associated with latches and rotating parts. This substitution significantly improves operational convenience and safety while maintaining reliability.
4Ease of operation
If direct use of preset jacks and pins is used to change height, then the structure is simple, but there are certain requirements for the user's physical strength
Solution Approach 1:
The patent incorporates a drive spring that acts as a counterweight mechanism, assisting the user during height adjustment. The spring provides upward force to counterbalance part of the table's weight, reducing the physical strength required from the user. This counterweight assistance significantly improves ease of operation while maintaining high adjustment productivity through the efficient winch drum system.
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 solution enables faster, more efficient height adjustment with reduced physical effort, providing continuous and precise control while ensuring user safety through a self-locking mechanism, suitable for various settings like offices and homes.
Implementation Method 1
The drive spring is connected to the spool through a spool drive rope to power the lifting table
Implementation Method 2
The brake gear, and a gear shaper assembly... allowing the user to rotate the spool and lift the lifting table
Data Source
AI summary
A lifting table that includes a worksurface, a left table leg assembly, a right table leg assembly, a left table feet assembly, and a right table feet assembly, and a beam assembly. The right table leg assembly. The left table leg assembly and the right table leg assembly vertically support the worksurface. The left table feet assembly is connected with the left table leg assembly. The right table feet assembly is connected with the right table leg assembly. The beam assembly is horizontally connected with the left table leg assembly and the right table leg assembly. The beam assembly includes a plurality of beam components such as a spool assembly and a drive spring. The spool assembly includes an aluminium bracket, a spool, a brake gear, and a gear shaper assembly. The drive spring is connected to the spool through a spool drive rope to power the lifting table. The spool is wound with an active wire rope and an auxiliary wire rope, coiled in opposite directions.