Step stool with stability extension
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Solution Overview
Problem
Conventional step stools are prone to instability during use, leading to tipping and potential injuries as users lean, especially when accessing high surfaces in home or office environments.
Innovation Solution
A step stool design featuring a stability extension that fits into the toe-space at the base of floor-standing furniture, providing mechanical interference to prevent tipping by angling the support structure outwardly and extending beyond the top step, creating a wider base for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional step stools are designed with a compact base, then they are easier to store and move, but they become unstable when users lean out of balance
Solution Approach 1:
The stability extension adds a dimensional element by projecting beyond the distal edge of the top step in the distal direction. This creates a wider base footprint without increasing lateral width, allowing the step stool to engage with toe-spaces at furniture bases and prevent tipping while maintaining a compact storage profile.
Solution Approach 2:
The support structure is divided into distinct functional segments: the main support structure that holds the steps, and the stability extension that projects distally to engage with furniture toe-spaces. This segmentation allows each component to perform its specific function independently while contributing to overall stability.
2Stability of the object's composition
If the support structure is widened to improve stability, then tipping is prevented, but the step stool occupies more space and becomes harder to move
Solution Approach 1:
Instead of widening the base laterally, the stability extension projects in the distal direction beyond the top step edge. This creates additional stability footprint in the depth dimension rather than the width dimension, allowing the step stool to engage with toe-spaces without increasing overall lateral footprint for storage and movement.
3Stability of the object's composition
If the step stool is positioned close to furniture for stability, then tipping is prevented, but the user has reduced access to the furniture surface
Solution Approach 1:
The stability extension acts as an intermediary element that engages with the furniture's toe-space, providing mechanical interference to prevent tipping. This allows the top step to be positioned close to the furniture surface for stability while the stability extension handles the stabilizing function, maintaining user accessibility to the furniture.
Data Source
AI summary
A stepstool includes a stool body and a stability extension. The stool body includes a top step and a support structure that supports the top step. The stability extension projects distally from a base portion of the support structure and extends distally beyond a distal edge of the top step. The stability extension is configured to be received in a toe-space at the base of floor-standing furniture, and the stool body is configured so that the distal edge of the top step can be positioned immediately adjacent to the floor-standing furniture, to provide mechanical interference and thus prevent tipping of the stool body when a user on the top step leans out of balance. Also, the sides of the support structure can be angled outwardly to provide a wider base portion for improved stability of the stool body.