Tri-Fold Sofa Frame With Nested Sections for Compact Bed Conversion
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Solution Overview
Problem
Convertible sofas for recreational vehicles face challenges in compactness and efficient conversion between sofa and bed orientations due to limited space, with existing designs often requiring complex frameworks or lacking in seamless integration of all elements.
Innovation Solution
A convertible sofa frame with a base frame, pivotally secured seat extension and back frames, deployable legs, and a mid-frame with cushion foundation, allowing for seamless conversion between sofa and bed orientations by adjusting the position of the seat and back frames and extending legs, ensuring all elements are integrated within the sofa orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple foldable structure is used, then ease of operation is improved, but structural stability deteriorates
Solution Approach 1:
The sofa frame is divided into multiple modular sections including a base frame, seat extension frame with mid-frame, and seat back frame. Each section can be independently manipulated through pivotal connections, allowing straightforward conversion operations while maintaining overall structural integrity through the coordinated arrangement of these segmented components.
2Volume of moving object
If all elements are included in the sofa orientation for compactness, then space efficiency is improved, but device complexity increases
Solution Approach 1:
The seat extension frame and mid-frame are nested within the confines of the base frame when in sofa orientation. The mid-frame is positioned between the seat frame and seat back frame, with all components arranged to fit within the overall sofa footprint. This nesting arrangement achieves compact storage while the pivotal connections enable straightforward deployment without requiring complex mechanisms.
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 and compact conversion between sofa and bed orientations, utilizing a robust yet space-efficient design that maintains comfort and support, suitable for limited spaces like recreational vehicles.
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
Implementation Method 2
The seat frame of the convertible sofa frame includes a pair of deployable legs. The legs are hingedly secured to the seat frame proximate opposite ends thereof.
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.