Ceiling Ladder Deep Step Nesting Design
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Solution Overview
Problem
Existing ceiling ladders lack a deep step option that provides a wider surface area for users to stand on when accessing attics, making it unsafe and uncomfortable for users to pause and place objects while climbing.
Innovation Solution
A ceiling ladder design featuring a deep step with a width at least 1.5 inches longer than standard steps, integrated into the ladder's sections that can fold and store above the ceiling without interference, ensuring stability and comfort for users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a deep step with greater width is added to provide user safety and comfort, then user safety and comfort are improved, but the ladder's foldability and storage capability may be compromised
Solution Approach 1:
The deep step is designed to nest within the ladder structure when folded. The step's increased width is accommodated by positioning it between the rails in a nested configuration, allowing the ladder to maintain its compact folded state while providing the safety benefits of a wider step when extended.
Solution Approach 2:
The step structure incorporates dynamic elements that allow it to adapt between extended and folded states. The step can transition from a wide, stable platform when the ladder is extended to a compact, nested position when folded, maintaining both safety and foldability through dynamic reconfiguration.
2Ease of operation
If a deep step with greater width is added to provide user comfort, then user comfort is improved, but the ladder structure becomes more complex
Solution Approach 1:
Instead of making the entire ladder structure more complex, the deep step with greater width is implemented as a localized feature only at specific positions where users need to pause and place objects. This local enhancement provides comfort without requiring complex changes to the overall ladder structure.
Solution Approach 2:
The ladder is divided into sections with standard-width steps and deep steps with greater width. This segmentation allows the ladder to maintain simplicity in most areas while providing enhanced comfort at specific locations where users are most likely to pause and place objects.
3Reliability
If a deep step with width at least 1.5 inches longer than standard steps is provided, then user safety is improved, but the manufacturing complexity increases
Solution Approach 1:
The deep step is created by modifying the width parameter of the step at specific locations rather than changing the entire ladder's manufacturing process. This localized parameter change allows for enhanced safety through wider steps while keeping manufacturing complexity manageable by only affecting specific components.
Solution Approach 2:
The manufacturing process is segmented into standard step production and deep step production. Standard steps are manufactured with conventional dimensions, while deep steps with increased width are produced separately and integrated into the ladder structure, allowing for specialized manufacturing only where needed.
Data Source
AI summary
A ceiling ladder having a plurality of sections that can be climbed by a user when in an unfolded position into an attic and that can be folded together into a retracted position to be stored above the ceiling. The ladder has a deep step, which has a width greater than the width of other steps of the ladder, in which is located between about 2-5 feet from the floor when the ladder is in the unfolded position so that a user can stand on the deep step and place objects into the attic without having to climb into the attic.