Expandable RV Habitation Unit with Guided Modules
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Solution Overview
Problem
Existing recreational vehicle (RV) slide-out units face limitations in expanding living space due to restricted amplitude of movement, cantilevering issues, and high manufacturing costs, along with complex maintenance requirements.
Innovation Solution
A novel expandable habitation unit utilizing a piston and guide arrangement allows the roof, rear module, and side modules to move along restricted paths, creating a larger living space by fully deploying the exterior shell, reducing cantilevering, and enabling retrofitting onto existing vehicle subframes or standalone use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional slide-out units are used to expand living space, then the vehicle's living area is increased, but the amplitude of movement is restricted and cantilevering issues occur
Solution Approach 1:
The habitation unit is divided into a main body and multiple expandable modules (rear module, side modules) that can independently extend along guided paths. This segmentation allows each module to be supported separately, reducing cantilevering effects while maximizing volume expansion.
Solution Approach 2:
The expandable modules extend in multiple dimensions (rearward, laterally) from the main body along restricted paths. This multi-dimensional expansion increases living space volume without requiring excessive extension in a single direction, thereby reducing cantilevering.
2Volume of moving object
If slide-out units are extended to increase living space, then volume is increased, but manufacturing costs and maintenance complexity increase
Solution Approach 1:
The habitation unit features dynamically extendable modules that can be adjusted between retracted and extended positions. This dynamic design allows the same structure to serve multiple size requirements, reducing the need for multiple fixed-size units and lowering manufacturing costs.
Solution Approach 2:
The expandable modules serve multiple functions: they provide additional living space when extended and can be retracted to minimize the vehicle's footprint for travel. This multi-functionality reduces the need for separate components, simplifying manufacturing.
3Volume of moving object
If multiple slide-out sections are used to maximize living space, then habitation volume is increased, but device complexity increases
Solution Approach 1:
Guide rails serve as intermediary structures that constrain and guide the movement of expandable modules along restricted paths. These intermediaries simplify the mechanical design by providing fixed reference structures, reducing the complexity of tracking and alignment mechanisms.
Solution Approach 2:
Each expandable module is designed with specific local characteristics (rear module for kitchen/bath, side modules for living/dining) that optimize its function. This localized design allows each module to be independently simplified while contributing to the overall complexity of the system.
Data Source
AI summary
An expandable habitation unit which includes a main frame and a main floor with an exposed habitation area. A rear module with a floor is located over a rear portion of the main floor. The rear module floor is connected to the main frame to allow limited movement over the rear portion of the main floor. A side module with a floor is located over a first side portion of the main floor. The first side module floor is connected to the main frame to allow limited movement over the first side portion of the main floor. Another side module has a floor located over a second side portion of the main floor. The second side module floor is connected to the main frame to allow limited movement over the second side portion of the main floor. The modules are moveable along their limited paths of travel to vary the size of the exposed habitation area.