Stabilized Step Ladder With Pivotally Deployed Lateral Supports
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Solution Overview
Problem
Existing step ladders lack effective lateral stabilization, which can lead to tipping and instability when in use.
Innovation Solution
The introduction of a pair of pivotally disposed lateral supports that can be deployed to engage a support surface, preventing the step ladder from tipping laterally, along with a suspended toolbox and a pivotally disposed light emitter for enhanced functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional step ladder design is used, then the structure is simple, but the lateral stability is insufficient leading to tipping risk
Solution Approach 1:
The lateral support system is segmented into multiple independent components: lateral supports with feet, cross supports connecting the lateral supports, and linkage mechanisms. This segmentation allows each component to perform its specific function while maintaining overall system manageability and reducing the complexity burden of the enhanced stability feature.
Solution Approach 2:
The lateral supports are designed with pivot linkages that allow them to dynamically adjust between a stored position (against the ladder body) and a deployed position (extending laterally to engage the support surface). This dynamic capability provides stability when needed while maintaining a compact form when the stability feature is not required, effectively resolving the contradiction between stability and complexity.
2Reliability
If lateral supports are added to prevent tipping, then stability is improved, but the device complexity increases
Solution Approach 1:
The lateral support system is merged with the existing ladder structure through pivot linkages that utilize the ladder's body as a mounting point. The cross supports connect the lateral supports to each other, creating an integrated assembly that functions as a unified stability system rather than separate add-on components, thereby reducing overall system complexity.
Solution Approach 2:
The lateral supports serve multiple functions: they provide lateral stability when deployed, store compactly against the ladder body when not needed, and can be easily deployed or stowed by the user. This multi-functionality reduces the need for separate components for each function, thereby improving reliability without proportionally increasing complexity.
3Ease of operation
If the toolbox is suspended for accessibility, then ease of operation is improved, but the structural complexity increases
Solution Approach 1:
The toolbox is suspended from the ladder structure in a manner that allows it to automatically adjust its position and orientation based on the ladder's configuration. The suspension mechanism utilizes the ladder's existing structural elements, allowing the toolbox to self-adjust without requiring complex active control systems or multiple adjustment components.
Data Source
AI summary
A stabilized ladder assembly includes a step ladder that has a set of climbing legs and a set of support legs each is hingedly coupled to a top support. A pair of lateral supports is each pivotally disposed on the step ladder. Each of the lateral supports is positionable in a deployed position to engage a support surface for inhibiting the step ladder from tipping laterally on the support surface. Each of the lateral supports is positionable in a stored position having the lateral supports resting against the step ladder. A toolbox is suspended on the step ladder such that the toolbox is accessible to a user when the user climbs the step ladder. Additionally, the toolbox is oriented to extend along a vertical axis when the step ladder is positioned in a deployed position.