Convertible 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 solutions either being overly complex or lacking in effective deployment mechanisms.
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 for support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple foldable framework is used, then ease of manufacture is improved, but conversion reliability deteriorates
Solution Approach 1:
The sofa frame is divided into multiple independent segments including a base frame, a seat extension frame with mid-frame, and a seat back frame. Each segment can be independently manufactured and then assembled through pivotal connections, simplifying production while ensuring reliable conversion through defined hinge points and structural relationships between segments.
2Reliability
If a complex foldable framework is used, then conversion reliability is improved, but device complexity worsens
Solution Approach 1:
The invention extracts and eliminates unnecessary intermediate components from traditional complex foldable frameworks. By using direct pivotal connections between the base frame, seat extension frame, and seat back frame, the design achieves reliable conversion without requiring additional complex mechanisms, intermediaries, or excessive structural elements.
3Volume of stationary object
If all elements are included in the sofa orientation for compactness, then volume of stationary object is improved, but ease of operation worsens
Solution Approach 1:
The sofa frame employs dynamic pivotal connections that allow the seat extension frame and seat back frame to rotate and transition between compact sofa orientation and extended bed orientation. The hinges enable smooth operational movement while maintaining a compact footprint when in the sofa configuration, balancing space efficiency with ease of conversion.
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 space utilization and comfortable conversion between sofa and bed orientations, ensuring compactness and stability in both configurations, suitable for limited spaces like recreational vehicles.
Implementation Method 1
a seat extension frame pivotally secured to the first side
Implementation Method 2
the mid-frame being pivotally secured on one side edge proximate the first side of the base frame and on an opposite side edge to the seat frame
Implementation Method 3
A seat back frame is pivotally secured to the second side of the base frame, with the seat back frame having an upright position and a prone position
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.