Height adjustable table
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Typical height adjustable tables using gas springs for height adjustment suffer from instability when air pressure is discharged, leading to unsteady table conditions.
Innovation Solution
A height adjustment mechanism featuring a locking mechanism with a plug and cam system that increases friction between the outer and inner sleeves, combined with a guide sleeve and ball bearings to reduce friction and ensure stability, and a mounting frame with a rotating handle assembly for easy height adjustment and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gas spring is used to drive the inner sleeve to slide vertically within an outer sleeve, then the table height can be adjusted, but the table becomes unstable when air pressure is discharged
Solution Approach 1:
The locking mechanism is activated before the gas spring completes its extension or retraction, preemptively securing the inner sleeve at the desired height position. This prevents the instability that would occur when air pressure is discharged, as the locking mechanism maintains friction between the plug and inner sleeve wall to hold the position firmly.
Solution Approach 2:
The locking mechanism acts as an intermediary between the gas spring and the inner sleeve. It transfers and maintains the height position by creating friction between the plug and the inner sleeve wall, ensuring stability even when the gas spring's air pressure is discharged. This intermediary mechanism bridges the gap between the adjustable height function and the stability requirement.
2Reliability
If friction is increased between the plug and inner sleeve to lock the height, then stability is improved, but operation becomes more difficult
Solution Approach 1:
The locking mechanism dynamically adjusts the friction level between the plug and inner sleeve wall based on operational needs. During height adjustment, the mechanism allows smooth movement with reduced friction. Once the desired height is reached, the locking mechanism engages to increase friction and lock the position firmly. This dynamic behavior resolves the contradiction between ease of operation and height stability.
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 locks the height adjustment system, ensuring the table remains stable and secure, reducing friction for smooth operation and facilitating easy height changes and storage configurations.
Implementation Method 1
The locking mechanism presses the pressing portion against the outer wall of the inner sleeve to increase the friction between the plug and the inner sleeve
Implementation Method 2
a guide sleeve and ball bearings to reduce friction and ensure stability
Data Source
AI summary
A table has a tabletop, a vertical support, and a mounting frame disposed at a top end of the vertical support and attached to the tabletop. The mounting frame includes a fixing base, a rotating frame rotatably connected to the fixing base, and a rotating handle assembly rotatably connected to the rotating frame. The rotating frame is operable to rotate between a horizontal position and a vertical position. The rotating handle assembly includes an abutting block that engages the lower embedding notch in the fixing base when the rotating frame is in the horizontal position. The rotating handle assembly has a lower edge that engages the upper embedding notch in the fixing base when the rotating frame is in the vertical position. A handle, which extends outwardly from the rotating handle assembly, is configured to be operated by a user to move the rotating frame between the vertical position and the horizontal position.