Desktop riser
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Solution Overview
Problem
Modern workplaces require adjustable work surfaces that allow for both sitting and standing positions to prevent injury, but existing solutions are often expensive or lack flexibility, with available options being designed for stationary use.
Innovation Solution
A height adjustable desktop riser with a platform, leg assembly, height adjustment mechanism, and locking system that allows the platform to be raised, lowered, and locked at various positions, featuring a torsion spring for biasing the leg assembly to the raised position and a lower position lock for secure storage, ensuring alignment with the center of mass and minimizing user effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a raise and lower mechanism is provided in the workstation, then the user can alternate between sitting and standing positions to prevent injury, but the workstation becomes expensive
Solution Approach 1:
The workstation is divided into a stationary base and a movable platform that can be independently adjusted. The leg assembly acts as a separate segment that provides height adjustment functionality without requiring the entire workstation to be expensive motorized equipment.
Solution Approach 2:
The leg assembly incorporates a scissor linkage mechanism that dynamically adjusts the height of the platform between sitting and standing positions. The biasing mechanism provides automatic return to the raised position, creating a dynamic system that responds to user input without expensive motors.
2Ease of manufacture
If a convertible platform is placed on top of a standard sitting desk, then the cost is reduced, but the platform is designed for stationary use which decreases flexibility
Solution Approach 1:
The platform incorporates a scissor linkage leg assembly that enables dynamic height adjustment between stationary and elevated positions. The biasing mechanism with spring-loaded return provides automatic restoration to the raised position, ensuring the platform returns to a stable, ready-to-use state after each adjustment cycle.
Solution Approach 2:
The biasing mechanism automatically returns the platform to the raised position without requiring user intervention. The spring-loaded system stores energy during lowering and releases it to automatically restore the platform to its operational height, making the system self-regulating.
3Device complexity
If the platform height is adjusted manually without biasing mechanism, then the structure is simpler, but user effort increases and ergonomics deteriorate
Solution Approach 1:
The biasing mechanism acts as a counterweight system that offsets the weight of the platform and work materials. The spring-loaded return mechanism provides an upward force that counteracts gravity, reducing the effort required by the user to adjust and maintain platform height.
Solution Approach 2:
The biasing mechanism automatically performs the work of returning the platform to the raised position, eliminating the need for the user to manually lift the platform against gravity. The system serves itself by using stored elastic energy to restore the platform to its operational position.
4Ease of manufacture
If the leg assembly is positioned away from the center of mass, then manufacturing is easier, but the platform becomes unstable and requires more user effort to control
Solution Approach 1:
The leg assembly is intentionally positioned asymmetrically at the rear of the platform rather than at the center. This asymmetric placement creates a deliberate offset from the center of mass, which the design compensates for through the biasing mechanism to maintain stability while simplifying assembly.
Solution Approach 2:
The biasing mechanism positioned at the rear with the leg assembly acts as a counterbalancing system that compensates for the offset from the center of mass. The spring force creates a moment that counteracts the destabilizing effect of the rearward position, maintaining platform stability during adjustment.
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
The solution provides a flexible, cost-effective, and ergonomic work surface that can be easily adjusted to different heights, reducing user effort and preventing pressure points, while maintaining a low profile appearance and allowing for easy movement and storage.
Implementation Method 1
featuring a torsion spring for biasing the leg assembly to the raised position
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A height adjustable work surface includes a platform and a height adjustment assembly moveably connected to the platform. A leg assembly is connected to the height adjustment assembly and moveably connected to the platform. The leg assembly is moveable between a raised position, a lowered position, and at least one intermediate position. A locking assembly is moveably connected to the platform. The locking assembly is configured to engage the height adjustment assembly to selectively secure the leg assembly in the raised position, the lowered position, and the at least one intermediate position.