Retractable RV Staircase Dynamics and Nesting
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Solution Overview
Problem
Recreational vehicles (RVs) face a challenge in providing a means to access the main level without reducing usable floor space, as traditional staircases diminish available space when deployed inside the vehicle.
Innovation Solution
A retractable staircase with a translational section and a rotational section that moves between extended and retracted positions, accompanied by automated actuators and synchronized handrails, allowing for compact storage within the RV without occupying interior floor space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional stairs are used inside the vehicle, then access to the main level is provided, but the amount of useable floor space is greatly diminished
Solution Approach 1:
The staircase is designed with translational and rotational sections that allow it to dynamically change position between extended (for access) and retracted (for storage) states. This dynamic configuration enables the staircase to provide access when needed while minimizing floor space occupation when not in use
Solution Approach 2:
The staircase utilizes three-dimensional movement through translational and rotational sections, moving the structure from a two-dimensional floor plane into the vertical and depth dimensions of the RV. This dimensional transformation allows the staircase to occupy minimal floor space while maintaining full functionality
2Area of stationary object
If the staircase is made retractable, then useable floor area is maintained, but the device complexity increases
Solution Approach 1:
The staircase is divided into distinct functional segments including a base section, translational section with multiple steps, and rotational section. This segmentation allows each component to perform its specific function independently while simplifying the overall mechanism design and maintenance
Solution Approach 2:
The rotational section nests within or alongside the translational section when retracted, creating a compact storage configuration. The handrails also nest with the staircase structure, maximizing space efficiency while maintaining structural integrity
3Ease of operation
If actuators are added to automate extension and retraction, then ease of operation is improved, but device complexity and cost increase
Solution Approach 1:
The staircase incorporates actuators that automatically control the extension and retraction of the translational section and the rotation of the rotational section without requiring manual operation. The system self-regulates the movement sequences, reducing the need for complex control interfaces while maintaining automated functionality
Data Source
AI summary
According to the present invention, there is provided a retractable staircase for a recreational vehicle. The retractable staircase has a translational section, which includes at least one-step. The translational section moves between an extended and a retracted position relative to the recreational vehicle. In the extended position, a rotational section, which also includes at least one step, moves between a lowered position with the step below the step of the translational section and an upside down and inverted position above the step of the translational section to provide for movement of the translational section to the retracted position.