Tri-Fold Sofa Frame With Pivoting Sections for Compact Bed Conversion
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Solution Overview
Problem
Convertible sofas designed for recreational vehicles face challenges in compactness and efficient conversion between sofa and bed orientations due to limited space, with existing designs often requiring separate elements that are not fully integrated for both functions.
Innovation Solution
A convertible sofa frame with a base frame, pivotally secured seat extension, mid-frame, and seat back frame, featuring deployable legs and a cushion foundation of spaced slats, allowing seamless transformation between sofa and bed orientations by adjusting the position of the seat back frame and extending legs, with removable cushions for optimal space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a convertible sofa is designed for recreational vehicles with limited space, then compactness is improved, but the complexity of integration and conversion mechanism increases
Solution Approach 1:
The patent merges the seat extension frame and seat back frame into a single integrated convertible sofa structure. All elements including the base frame, seat extension frame with mid-frame, and seat back frame are combined into one cohesive unit that converts between sofa and bed orientations without requiring separate components, thereby achieving compactness while managing integration complexity.
Solution Approach 2:
The convertible sofa frame is designed to perform multiple functions: it serves as both a sofa frame and a bed frame. The same base frame, seat extension frame, and seat back frame components are used in both orientations, eliminating the need for separate elements and reducing overall structural complexity while maintaining compactness.
2Volume of moving object
If all elements are integrated in the sofa orientation for compactness, then space utilization is improved, but the ease of conversion between orientations deteriorates
Solution Approach 1:
The convertible sofa frame is segmented into distinct pivotally connected components: base frame, seat extension frame (with mid-frame), and seat back frame. This segmentation allows each component to move independently during conversion, simplifying the conversion process while maintaining compact integrated storage in sofa orientation.
Solution Approach 2:
The patent employs pivotal connections that enable dynamic movement between components. The seat extension frame pivots on the base frame, and the seat back frame pivots on the base frame, allowing smooth transition between sofa and bed orientations. This dynamic design makes conversion easier while all elements remain integrated in sofa orientation for compactness.
3Adaptability or versatility
If a pivotal connection system is used for conversion, then adaptability between orientations is improved, but the device complexity increases
Solution Approach 1:
The pivotal connection system is segmented into discrete hinge points: one pivotal connection between the seat extension frame and base frame, and another pivotal connection between the seat back frame and base frame. This segmentation allows each pivot to perform a specific function, achieving orientation adaptability while keeping individual connection mechanisms simple and manageable.
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
Enables efficient conversion between sofa and bed orientations within limited spaces by integrating all elements in the sofa orientation, providing a compact and comfortable sleeping surface with proper support and cushioning, suitable for recreational vehicles and other dwellings.
Implementation Method 1
a seat extension frame pivotally secured to the first side... A seat back frame is pivotally secured to the second side of the base frame
Data Source
AI summary
A convertible sofa and sofa frame deployable between a sofa orientation and a bed orientation. The frame has a base frame with a seat extension frame comprising a seat frame and a mid-frame pivotally secured to the base frame. Cushioning is on one side of the base frame. A seat back frame is pivotally secured to the base frame, the second cushioning on what is a back side when in the sofa orientation. Removable seat back cushions engage the front side of the seat back frame in the sofa orientation. In the bed orientation, the seat frame is extended, the seat back portion is pivoted horizontally, and the removable seat back cushions are located on the mid-frame between the seat frame and the seat back frame.