Stair-Mountable Chair Assembly With Adjustable Stable Step Positioning
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Solution Overview
Problem
Existing chair assemblies lack the ability to be securely and comfortably positioned on staircase steps, failing to provide a stable and adjustable seating solution for working purposes.
Innovation Solution
A staircase mountable chair assembly comprising a pair of telescopic supports with adjustable height, a horizontal base, and a rotatable seat, designed to be positioned on adjacent steps, with elastomeric coatings to prevent sliding and storage pockets for tools, ensuring stability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional chair assembly is used on staircase steps, then it can provide seating function, but it cannot be securely positioned and lacks stability
Solution Approach 1:
The chair assembly is divided into separate functional components: telescopic supports for positioning, a base for stability, and a seat for seating. This segmentation allows each component to be optimized for its specific function, with the supports providing adaptability to different step configurations while the base provides stability on the upper step.
Solution Approach 2:
The telescopic supports with adjustable height allow the chair assembly to dynamically adapt to different staircase configurations. The supports can be extended or retracted to match various step height differences, enabling secure positioning across different staircases while maintaining stability through the horizontal base configuration.
2Adaptability or versatility
If the supports are positioned on lower steps, then the base can be placed on upper steps, but the assembly lacks adjustable height capability
Solution Approach 1:
The telescopic supports incorporate adjustable height mechanisms that allow users to modify the height of the base relative to the seat. This dynamic adjustment capability enables the assembly to adapt to different user heights and comfort preferences while maintaining the functional relationship between supports on lower steps and base on upper steps.
Solution Approach 2:
The height of the telescopic supports can be changed to adjust the vertical distance between the base position on upper steps and the seat position. This parameter adjustment allows optimization of seating comfort for different users and applications while preserving the stable positioning configuration.
3Reliability
If the base is positioned on the upper step, then stability is improved, but sliding occurs without anti-slip measures
Solution Approach 1:
The elastomeric coating on the base converts the potentially harmful sliding motion into a beneficial anti-slip function. The elastomeric material provides friction and grip on the upper step surface, preventing unwanted sliding while allowing controlled positioning, thus transforming the sliding tendency into a stable, controllable interface.
4Adaptability or versatility
If the chair assembly is designed for staircase use, then it provides specialized functionality, but the structure becomes complex
Solution Approach 1:
The assembly is segmented into modular components (telescopic supports, base, seat) that can be independently manufactured and assembled. This modularity reduces overall complexity by allowing each component to be optimized separately and simplifies assembly and maintenance while achieving the specialized staircase positioning functionality.
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 chair assembly provides a stable and adjustable seating solution for working on stairs, allowing users to comfortably sit and work on staircase steps with adjustable height and storage for tools, enhancing usability and safety.
Implementation Method 1
elastomeric coatings to prevent sliding
Data Source
AI summary
A staircase mountable chair assembly for usage while working on a staircase includes a pair of supports. The supports are attached together and have a shape to retain the supports in an upright position. A base is attached to and extending outwardly from the supports. The base lies in a horizontal plane when the supports are positioned in the upright position. The base is positioned on an upper step when the supports are on a next adjacent lower step. A post is attached to and extending upwardly from the base. The post has an upper end with a seat attached thereto.