Rotating Cable Gas Cylinder for Twist-Free Chair Height Adjustment
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Solution Overview
Problem
Traditional cable-operated gas cylinders for chair height adjustment suffer from kinking or twisting when the chair is rotated, leading to reduced operation reliability and durability, increased manufacturing complexity, and higher production costs due to a complex structure.
Innovation Solution
A cable-operated gas cylinder design featuring a hollow base tube, a spindle, a gas-filled cylinder, a piston, a pipe holder, a gas opening/closing pin, a release arm, and a taper holder that allows the release arm and taper holder to rotate together with the cable, preventing kinking or twisting during chair rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cable is used to operate the gas cylinder from a button on the arm rest, then the user can adjust height without bending the body, but the cable will twist and kink when the chair is rotated
Solution Approach 1:
The patent introduces a rotating connection mechanism at the cable's connection point with the chair base. This allows the cable to rotate dynamically with the chair while maintaining a constant distance from the button, preventing twisting and kinking. The dynamic rotation capability resolves the contradiction by enabling both ease of operation and reliability simultaneously.
2Ease of operation
If a cable operated mechanism is implemented, then height adjustment can be performed from the arm rest, but the structure becomes complicated with multiple parts
Solution Approach 1:
The patent merges the cable routing path with the existing chair structure by integrating the rotating connection mechanism into the chair base. This consolidation reduces the number of separate components and simplifies the overall structure while maintaining the cable-operated height adjustment functionality from the arm rest.
3Ease of operation
If a cable operated mechanism is implemented, then height adjustment can be performed from the arm rest, but manufacturing costs increase
Solution Approach 1:
By integrating the rotating connection mechanism into the existing chair base structure rather than adding it as a separate component, the patent reduces manufacturing complexity and cost. The merged design allows for simpler production processes and lower assembly requirements while maintaining the cable-operated height adjustment feature.
Data Source
AI summary
A cable operated gas cylinder comprises: a base tube; a spindle which is inserted at hollow part in said base tube; a cylinder which is mounted within said spindle; a piston dividing the gas-filled space within said cylinder into upper part and lower part; a pipe holder sealing airtight the upper part of said cylinder; a gas opening/closing pin which is mounted penetratingly through central part of said pipe holder and for controlling getting in and out of the gas filled within said cylinder; a release arm for controlling the opening/closing of said gas opening/closing pin; a cable for controlling turning of said release arm when being pulled by external force; and a taper holder which receives said release arm therein and rotationally intervenes within said spindle, wherein said release arm and said taper holder are capable of rotating together as said cable rotates.