Height-adjustable desk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing height-adjustable desks with X-shaped support arm assemblies suffer from instability, particularly when the desk board is in a higher position, leading to a risk of the desk falling if a heavy object is placed on the unsupported side.
Innovation Solution
The implementation of a rhombic linkage mechanism as the support arm assembly, combined with a telescopic supporter that can extend and retract to adjust the desk board's height, provides enhanced stability by maintaining consistent support points regardless of the desk board's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an X-shaped support arm assembly is used for height adjustment, then the desk can achieve height adjustment functionality, but the stability deteriorates when the desk board is in a higher position
Solution Approach 1:
The support arm assembly is segmented into multiple independent support arms (first support arm, second support arm, third support arm, fourth support arm) that can independently adjust and provide support. This segmentation allows each arm to independently adapt to height changes while maintaining overall stability, resolving the contradiction between height adjustability and stability.
2Length of moving object
If the desk board ascends to a higher position, then the height adjustment range is improved, but the support distribution becomes unbalanced causing the desk to be prone to falling
Solution Approach 1:
The support system uses asymmetric arrangement of support arms with different configurations (first and second support arms connected to left side, third and fourth support arms connected to right side) to balance the support distribution. This asymmetric design ensures that when the desk board is at higher positions, both left and right sides have adequate support, preventing the desk from falling and improving anti-falling reliability.
3Stability of the object's composition
If a rhombic linkage mechanism is used instead of X-shaped support, then the stability is improved, but the device complexity increases
Solution Approach 1:
The rhombic linkage mechanism serves multiple functions simultaneously: it provides structural stability through its geometric properties, enables height adjustment through rotational movement, and distributes load across multiple support arms. This multi-functionality achieves improved stability without proportionally increasing complexity, as the same structural elements perform multiple roles.
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
This configuration ensures stable support for the desk board across various height settings, preventing the desk from tipping or falling, even when heavy objects are placed on one side, thereby improving user safety and convenience.
Implementation Method 1
The support arm assembly is a rhombic linkage mechanism... Both a bottom end of the first arm segment and a bottom end of the second arm segment rotatably connect with the base... Both a top end of the third arm segment and a top end of the fourth arm segment rotatably connect with the desk board assembly
Implementation Method 2
The at least one supporter is capable of extending and retracting to adjust a distance between the desk board assembly and the base in a vertical direction
Implementation Method 3
Both a bottom end of the first arm segment and a bottom end of the second arm segment rotatably connect with the base... A top end of the first arm segment rotatably connects with a bottom end of the third arm segment
Data Source
AI summary
A height-adjustable desk includes a base, a desk board assembly, a support arm assembly and a supporter. The desk board assembly is above the base, and the support arm assembly is a rhombic linkage mechanism. The support arm assembly includes a first arm segment, a second arm segment, a third arm segment and a fourth arm segment. Bottom ends of the first and second arm segments rotatably connect with the base, and top ends of the third and fourth arm segments rotatably connect with the desk board assembly. A top end of the first arm segment rotatably connects with a bottom end of the third arm segment, and a top end of the second arm segment rotatably connects with a bottom end of the fourth arm segment. The first and second arm segments, and the third and fourth arm segments connect in an engaging transmission manner, respectively.