Integrated Collapsible Ladder Rung Design
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Solution Overview
Problem
The manufacturing process of collapsible ladders is complex due to the construction of traditional rungs, and the durability of these ladders needs improvement.
Innovation Solution
A rung design featuring a main section and integrated first and second bracket sections, which simplifies assembly and enhances durability by reducing the number of separate parts and eliminating issues with press-fit attachments during tensile testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional separate bracket sections are attached to the main section using press fit, then the rung can be assembled from separate parts, but the durability decreases and parts may disconnect during tensile tests
Solution Approach 1:
The patent merges the main section and bracket sections into a single integrated rung component. This eliminates the press-fit connection between separate parts, preventing disconnection during tensile tests and improving overall durability while maintaining manufacturing efficiency through integral forming processes
2Device complexity
If multiple separate parts are used in the rung construction, then the assembly process is more complex, but the manufacturing flexibility is maintained
Solution Approach 1:
The patent combines multiple separate rung components into a single integrated part, directly reducing assembly process complexity and eliminating the time required for multiple assembly steps. The integral design allows for streamlined manufacturing processes such as injection molding or extrusion, improving productivity while simplifying the overall assembly procedure
Data Source
AI summary
A rung for use in a ladder section of a collapsible ladder (1) is provided. The collapsible ladder comprises several ladder sections (5, 5a-5j), where each ladder section comprises two ladder tubes (10, 12) arranged parallel to each other and interconnected by the rung (20) to form the respective ladder section, and where each ladder tube (10, 12) is telescopically inserted into a ladder tube (10, 12) of a lower ladder section to form the collapsible ladder (1), the rung (20) comprising a main section (22), a first bracket section (24a) and a second bracket section (24b), wherein the first and second bracket sections (24a, 24b) are arranged at each end of the rung (20) to receive the respective ladder tube (10, 12). The rung (20) is characterized in that the main section (22) and the first and second bracket sections (24a, 24b) are provided as an integrated unit.