Telescopic Crossbar Desk Frame Central Support Wobble
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Solution Overview
Problem
Conventional standing desks experience diminished support at the central portion of the desktop when the telescopic crossbar is extended, leading to increased wobble due to reduced support strength.
Innovation Solution
A desk frame design with a telescopic crossbar that lifts a portion of the second crossbar above the support portions when extended, providing additional support points and counterforces to stabilize the desktop, enhancing support at the central portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the telescopic crossbar is extended to accommodate longer desktops, then the adaptability of the desk frame is improved, but the support strength at the central portion of the desktop is diminished
Solution Approach 1:
The crossbar is divided into a first crossbar and a second crossbar that can move relative to each other. The second crossbar is segmented into an upper section and a lower section, allowing independent movement of the upper section to provide central support while the lower section maintains the telescopic function for length adjustment.
Solution Approach 2:
The support function is extended from the horizontal plane (where the support portions are located) to the vertical dimension. The upper section of the second crossbar moves vertically relative to the first crossbar, creating a vertical support component that presses against the central portion of the desktop from above, adding a new dimensional aspect to the support mechanism.
2Length of stationary object
If the telescopic crossbar is extended, then the length of support coverage is improved, but the stability of the desktop is worsened due to increased wobble
Solution Approach 1:
Different sections of the crossbar structure are given different functions: the support portions at the ends provide lateral support, while the upper section of the second crossbar at the central location provides vertical pressing support. This local differentiation of support qualities ensures that each region of the desktop receives appropriate support to minimize wobble across the entire surface.
Data Source
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AI summary
Disclosed are a desk frame for a desk and such a desk; the desk frame includes two leg assemblies and a telescopic crossbar connected therebetween, an upper portion of each of the two leg assemblies being provided with a support portion configured to support a desktop; the telescopic crossbar including a first crossbar and a second crossbar which are fitted one inside the other and extendable/retractable relative to each other; a partition groove is provided on the first crossbar along an extension/retraction direction thereof, the partition groove being configured to divide the first crossbar into an upper crossbar and a lower crossbar; when the telescopic crossbar is in the extended state, a fitted section of the second crossbar is lifted by the lower crossbar so that an upper end surface of the second crossbar is higher than the support portions, and a fitted section of the upper crossbar is lifted by the second crossbar so that an upper end surface of the upper crossbar is higher than the support portions, whereby the desk frame, when being connected to the desktop, presses against the desktop to provide a support. When the telescopic crossbar is in the extended state, a partial structure of the telescopic crossbar is lifted to press against the desktop, thereby enhancing a supporting strength of the telescopic crossbar against the desktop.