Adjustable Desk Platform With Parallel Lift and Locking Positions
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Solution Overview
Problem
Conventional desks do not accommodate the need for ergonomic environments that allow easy transition between sitting and standing, leading to health issues associated with prolonged sitting or standing, such as cardiovascular disease and varicose veins.
Innovation Solution
An adjustable desk platform with a planar work surface that can move between fully raised and fully lowered positions, featuring a base without legs for placement on existing desks, coupled with arms for parallel movement and a user-operable locking mechanism to secure positions, along with counterweights and biasing mechanisms for ease of use and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional fixed-height desk is used, then the structure is simple and stable, but the user cannot transition between sitting and standing positions, leading to health issues
Solution Approach 1:
The desk is divided into a stationary base and a movable upper platform, allowing the platform to be adjusted independently while the base remains fixed on the existing desk surface
Solution Approach 2:
The upper platform is made dynamically adjustable through a crank mechanism that enables smooth height transitions between sitting and standing positions, replacing the static fixed-height design
2Adaptability or versatility
If standing desks are used, then users can stand during work, but standing for very long periods increases the risks of carotid atherosclerosis and varicose veins
Solution Approach 1:
The desk enables periodic alternation between sitting and standing positions throughout the workday, allowing users to change posture regularly rather than maintaining one position continuously, thereby reducing health risks associated with prolonged standing
3Ease of operation
If an adjustable mechanism is added to allow height changes, then users can transition between sitting and standing, but the device complexity increases
Solution Approach 1:
The crank mechanism is designed to be manually operated by the user without requiring external power sources or complex electronic controls, making the adjustment system self-service and mechanically simple
Solution Approach 2:
A crank mechanism serves as an intermediary between the user's manual input and the upper platform's height adjustment, providing a simple mechanical transmission that converts rotational motion into vertical movement
4Adaptability or versatility
If the upper platform is made movable for height adjustment, then ergonomic transitions are enabled, but the stability of the work surface may be compromised
Solution Approach 1:
The locking mechanism is designed to automatically engage and secure the upper platform in the desired position after adjustment, ensuring stability is restored immediately following the movement phase
Solution Approach 2:
The system transitions from a static stable state to a dynamic adjustable state and back to a static locked state, providing both height adaptability and work surface stability at different operational phases
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 quick and simple height adjustments, promoting ergonomic work environments that reduce health risks by allowing users to alternate between sitting and standing, thereby improving energy levels and weight management without requiring significant changes in diet or exercise.
Implementation Method 1
the base includes a counterweight adapted to offset weight of the upper platform when in the raised position
Implementation Method 2
a biasing mechanism associated with at least one of the first and second sets of arms, wherein moving the upper platform toward the fully raised position loads the biasing mechanism
Data Source
AI summary
An adjustable desk platform can include: an upper platform defining a substantially planar work surface; a base located beneath the upper platform, the base defining a bottom surface without legs that is adapted to sit on an existing desk; first and second sets of arms coupling the upper platform to the base, wherein the first and second sets of arms are adapted for movement of the upper platform substantially in parallel with the base between a fully raised position and a fully lowered position; and a user-operable locking mechanism associated with the upper platform, the locking mechanism adapted to releasably lock the upper platform in the fully raised position, and in at least one intermediate position between the fully raised position and the fully lowered position. Other features and embodiments are discussed.