Height-adjustable desk and telescopic posts thereof
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Solution Overview
Problem
Existing adjustable-height tables do not provide ergonomic configurations that allow users to work while seated on the floor, in a chair, standing, and in any other configuration in between, failing to meet the diverse needs of users for health and productivity.
Innovation Solution
A height-adjustable desk mechanism featuring telescopic legs with a multi-stage actuated lift system and cover mechanism, controlled by an electric motor and control panel, allowing for precise height adjustment and minimizing height to accommodate various working positions, including a low height suitable for floor seating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing adjustable-height tables are used, then users can switch between sitting and standing positions, but they cannot work while seated on the floor or in intermediate configurations
Solution Approach 1:
The desk leg is divided into multiple telescopic sections that can extend and retract independently, allowing the desk height to be adjusted to accommodate floor seating, chair seating, and standing positions. The segmentation of the leg structure enables continuous height adjustment rather than fixed positions.
Solution Approach 2:
The desk employs a dynamic height adjustment mechanism with telescopic legs that can continuously change height. The electric motor provides powered adjustment, and the telescopic design allows the leg length to vary dynamically based on user needs, enabling transition between multiple working configurations.
2Adaptability or versatility
If the desk is designed for low height to accommodate floor seating, then ergonomic comfort for floor users is improved, but the desk may not provide sufficient height for standing users
Solution Approach 1:
The telescopic leg employs a nested structure where one leg section is inserted within another. This nesting arrangement allows the leg to compact to a minimal height for floor seating while still extending to sufficient height for standing users, maximizing the height range within a compact form factor.
Solution Approach 2:
The manual height adjustment mechanism is replaced with an electric motor-driven system. The motor automatically adjusts the telescopic leg extension, eliminating the need for manual cranks or levers and providing smooth, precise height control for transitioning between different working positions.
3Length of moving object
If a multi-stage telescopic mechanism is used to achieve low minimum height, then floor seating ergonomics are improved, but the device complexity increases
Solution Approach 1:
The multi-stage telescopic mechanism uses nested cylindrical sections where inner tubes slide within outer tubes. This nesting design achieves a compact minimum height when fully retracted while maintaining structural integrity. The nested structure is more space-efficient than alternative mechanisms for achieving low minimum height.
Solution Approach 2:
The electric motor acts as an intermediary that simplifies the operation of the complex multi-stage telescopic mechanism. Rather than requiring manual coordination of multiple locking and unlocking actions, the motor automatically controls the extension and retraction sequences, making the complex mechanism easy to operate.
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
Enables users to adjust the desk height seamlessly between seated, standing, and intermediate positions, enhancing ergonomic comfort and productivity by providing a versatile and ergonomic working surface.
Implementation Method 1
The first telescopic leg includes a first lead screw, a second lead screw, and a third lead screw nested within one another and configured to simultaneously rotate to move in the vertical direction by interacting with lead nuts
Implementation Method 2
The height of the height-adjustable desk is controlled by the control panel attached to the work surface. The control panel is electrically connected to the motors (not illustrated) of the two telescopic legs
Data Source
AI summary
The height adjustable desk according to the present disclose includes a work surface and at least one telescopic leg attached to the work surface. The telescopic leg has a motor, a gear set, a first rotator, and a second rotator. The gear set has a first gear connected to the motor and a second gear engaged with the first gear, wherein the motor transfers force to the second gear through the first gear. The first rotator is engaged with the second gear and the second rotator engaged with the first rotator. The motor rotates the first rotator through the gear set so that the first rotator can translate along a length of the second rotator. The first gear is located above the motor and the second gear is located above the first rotator.