Dual-Purpose Folding Ladder With Chair and Creeper Conversion
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Solution Overview
Problem
Folding ladders occupy space when not in use and serve no other function, limiting their utility.
Innovation Solution
A dual-purpose folding ladder that can convert into a reclining chair or creeper by adjusting the angle and securing components, utilizing a base with casters, guide rails, supporting arms, and a first pad with adjustable positioning plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a folding ladder is used for vehicle maintenance, then the worker can reach sufficient height, but the ladder occupies space and serves no other function when not in use
Solution Approach 1:
The folding ladder is designed to perform multiple functions: it can be used as a traditional ladder for reaching heights, folded into a compact form for storage, and converted into a reclining chair for resting during maintenance work. This multi-functionality resolves the contradiction by making the ladder serve additional purposes beyond just providing height access.
Solution Approach 2:
The ladder incorporates movable components including adjustable rungs, foldable side rails, and a reclining seat mechanism that can be positioned at different angles. These dynamic elements allow the ladder to transform between different functional states (ladder mode, folded storage mode, and chair mode), enabling it to adapt to different usage scenarios while maintaining compact dimensions when not in use.
2Volume of moving object
If the ladder is designed to be foldable for compact storage, then space occupation is reduced, but the structural complexity increases
Solution Approach 1:
The ladder is divided into modular segments including side rails, rungs, and a separate reclining seat assembly. Each component can be independently folded or adjusted, allowing the structure to be compacted efficiently while using simple connection mechanisms that reduce overall structural complexity despite the multiple functional states.
Data Source
AI summary
A dual-purpose folding ladder includes: a base including a plurality of casters provided under the base, a positioning mount provided on the base, and two supporting rods provided on one side of the base; two guide rails each pivotally provided at, and rotatable with respect to, a corresponding one of the two supporting rods, with a connecting plate provided between the two guide rails; a supporting post pivotally connected to the connecting plate at one end and connected to the positioning mount at the other end; two supporting arms each mounted in a corresponding one of the two guide rails, with a plurality of rungs provided between and connecting the two supporting arms; two extension arms each provided at one end of a corresponding one of the supporting arms; and a first pad pivotally provided on the two supporting arms and provided with an arc-shaped positioning plate on one side.