Height-Adjustable Table Linkage for Coplanar Ergonomic Adjustment
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Solution Overview
Problem
Existing computer stands and desks often lack ergonomic adjustability, making them uncomfortable for long-term use, as they typically allow only a few pre-set positions or are difficult to adjust.
Innovation Solution
A height-adjustable table design featuring a worksurface supported by legs, with a linkage mechanism that allows the height-adjustable surface to move between raised and lowered positions while remaining parallel to a fixed surface, incorporating a telescoping riser and counterbalance mechanism for easy adjustment and ergonomic flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a height adjustable table uses a linkage mechanism with telescoping riser, then the ease of operation for height adjustment is improved, but the device complexity increases
Solution Approach 1:
The movable member of the telescoping riser is nestable within the stationary member, allowing the linkage mechanism to be compactly integrated into the table structure. The linkage components are enclosed within the stationary member, creating a nested configuration that reduces visual complexity while maintaining full adjustability functionality.
Solution Approach 2:
The table implements a dynamic height adjustment system where the movable member can extend from and retract into the stationary member. The linkage mechanism enables smooth transition between raised and lowered positions, providing continuous adaptability rather than fixed preset positions, thereby improving ease of operation.
2Adaptability or versatility
If the height adjustable surface retracts into the recessed portion, then the adaptability for different working postures is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The fixed surface includes a specifically designed recessed portion that accommodates the height adjustable surface when lowered. This localized structural feature ensures that only the specific area requiring precision (the recessed portion) is manufactured with high precision, while the rest of the table structure can use standard manufacturing tolerances.
Solution Approach 2:
The design ensures that when the height adjustable surface is in the lowered position, it becomes coplanar with the fixed surface, creating an equipotential working surface. This allows users to transition between sitting and standing postures without encountering height discontinuities or steps, enhancing adaptability.
Data Source
AI summary
A height adjustable table can include a plurality of legs, a lower portion, a worksurface, a height adjustable surface, and a linkage. The worksurface can be supported by the plurality of legs and can include a fixed surface and a height adjustable surface. The fixed surface can be secured to at least one of the lower portion and the plurality of legs, and the fixed surface can define a recessed portion. The height adjustable surface can be movable between a raised position and a lowered position so that the height-adjustable surface retracts into the recessed portion when in the lowered position so that the height adjustable surface is coplanar with the fixed surface. The linkage can be configured to move the height adjustable surface between the lowered position and the raised position so that the height adjustable surface remains parallel to the fixed surface.