Detachable Step-Sheet Ladder for Compact Carrying and Safer Footing
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Solution Overview
Problem
Conventional ladders face issues with user slipping, increased volume leading to poor portability, and the need for complete replacement when parts are damaged.
Innovation Solution
A ladder design featuring detachable step sheets coupled via screws, magnets, or sliding grooves and pole members, with magnetic coupling for enhanced stability and ease of replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fixing members (Velcro, buckle) are used to attach the guard member to the horizontal support, then the guard member can be attached to the ladder, but the fixing members are loosened as the user uses the ladder and thus are eliminated from the ladder
Solution Approach 1:
The guard member is divided into multiple detachable segments that can be independently attached and removed from the horizontal support. Each segment has its own attachment mechanism, allowing partial replacement or adjustment without affecting the entire guard member structure.
Solution Approach 2:
The attachment system transitions from static permanent fixation to dynamic detachable connection. The guard member can be easily attached and detached multiple times using the coupling mechanism, providing flexibility while maintaining secure connection during use.
2Reliability
If a plurality of fixing members are attached to the rear surface of the integrated guard member, then the guard member can be fixed to the horizontal support, but the entire guard member may have to be purchased again when a part of the guard member is damaged
Solution Approach 1:
The guard member is segmented into multiple independent sections that can be separately replaced. When one section is damaged, only that specific section needs to be detached and replaced, not the entire guard member assembly.
Solution Approach 2:
The detachable coupling mechanism allows damaged sections to be easily discarded and replaced with new ones, while the intact sections are recovered and retained on the ladder structure.
3Device complexity
If conventional ladders maintain a constant length, then the ladder structure is simple, but they are inconvenient to carry due to their large volume
Solution Approach 1:
The ladder transitions from a fixed constant-length structure to a dynamic adjustable-length structure. The telescopic mechanism allows the ladder to extend to full working length when needed and retract to a compact size for storage and transport, significantly reducing volume while maintaining structural integrity.
Solution Approach 2:
The telescopic ladder sections are nested within each other when retracted, with inner sections sliding into outer sections. This nesting arrangement minimizes the overall volume of the ladder when not in use, making it much more portable while maintaining full extension capability when deployed.
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
Improves portability by reducing volume when not in use, prevents user slipping, and allows for easy replacement of damaged parts.
Implementation Method 1
The coupling means comprises a plurality of magnetic bodies coupled to each other by magnetism, and the plurality of magnetic bodies are disposed on one side of the horizontal frame and one side of the step sheet corresponding to the one side of the horizontal frame.
Implementation Method 2
a magnetic body having a second polarity of the sliding groove and a magnetic body having a second polarity of the pole member exert repulsive force on each other in the sliding groove, thereby improving mobility of the pole member
Implementation Method 3
at both ends of the sliding groove, a magnetic body having a first polarity of the sliding groove and a magnetic body having a second polarity of the pole member exert an attractive force on each other to prevent the pole member from being separated from each other
Data Source
AI summary
Disclosed is a ladder capable of improving portability by reducing volume when not in use and preventing a user from slipping. The ladder according to the present disclosure comprises a pair of vertical frames, a plurality of horizontal frames installed between the pair of vertical frames at predetermined intervals, and a step sheet configured to be coupled to any two horizontal frames among the plurality of horizontal frames, respectively, to form a footrest of a ladder, and the step sheet may be detachably coupled to the horizontal frame through a coupling means.