Stools, chairs, and methods using the same
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stools and chairs are not ergonomically designed to support a user's chest and arms when leaning forward, leading to fatigue and discomfort for tattoo artists and medical professionals.
Innovation Solution
A reconfigurable support apparatus with a padded chest support and adjustable armrests that can be rotated between stowed and deployed positions to allow for unrestricted movement of the user's arms and shoulders, providing ergonomic support for users in various positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional stools and chairs are used, then the structure is simple and cost-effective, but they cannot provide ergonomic support for the user's chest and arms when leaning forward
Solution Approach 1:
The support apparatus is divided into distinct functional segments: a chest support component with armrests that can be positioned independently from the seat assembly. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity.
Solution Approach 2:
The chest support assembly serves multiple functions simultaneously: it supports the user's chest weight, provides armrests for arm support, and allows adjustable positioning to accommodate different user preferences and task requirements. This multi-functionality reduces the need for separate support devices.
2Ease of operation
If the chest support is narrower than the user's chest, then arm movement is unrestricted, but the support area for the chest is reduced
Solution Approach 1:
The chest support assembly has non-uniform width distribution: it is narrower at the front contact area with the chest to allow arm movement, while extending wider at the rear attachment area to the seat frame for structural stability. This local variation in dimensions optimizes both arm mobility and structural support.
3Ease of operation
If armrests are shorter than the user's forearms, then wrist and hand movement is unrestricted, but the support area for the arms is reduced
Solution Approach 1:
The armrests are designed with optimized length and positioning: they extend far enough to provide adequate support surface area for the forearms, but are positioned and dimensioned to clear the user's wrists and hands, allowing unrestricted movement in these regions. The armrests are attached to the chest support assembly rather than the seat, providing local support exactly where needed.
4Adaptability or versatility
If the support apparatus is reconfigurable with movable armrests, then adaptability to different positions is improved, but the device complexity increases
Solution Approach 1:
The armrests are designed to be movable rather than fixed, allowing them to be repositioned between different configurations (e.g., extended for arm support, retracted for chest support only). This dynamic capability enables the same apparatus to adapt to different user preferences and task requirements without requiring multiple separate devices.
Solution Approach 2:
The movable armrests are implemented as separate, detachable components from the chest support assembly, allowing independent positioning and configuration. This segmentation simplifies the reconfiguration mechanism compared to integrated designs, as each armrest can be adjusted independently without affecting other components.
Data Source
AI summary
An apparatus that supports a user in a variety of positions to comfortably perform tasks, such as applying one or more tattoos to skin of a subject is herein disclosed. The apparatus can be reconfigured to optimally position and support the arms and/or chest of the user. A method for using a stool can involve rotating armrests of the apparatus from a stowed position to a deployed position. The armrests can support the user's forearms while supporting the user's chest such that the user can comfortably perform tasks in front of a chest support of the stool.