Sofa Bed Nested Storage Design to Minimize Floor Space Occupation
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Solution Overview
Problem
Conventional sofa beds occupy unnecessary floor space when not in use, as the sofa seat remains horizontal, and there is a need for a system that can convert between a sofa and a bed while occupying minimal space.
Innovation Solution
A sofa bed system that can completely fold into a storage unit and selectively deploy as a sofa or a bed, comprising a sofa seat frame, a pivotably attached sofa back frame, and a bed frame, allowing it to transition between a fully stored position, a sofa position, and a bed position, with components aligning horizontally out of the storage compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sofa bed is designed to convert between sofa and bed configurations, then versatility is improved, but floor space occupation worsens when neither function is needed
Solution Approach 1:
The sofa bed system is nested within a storage unit, with the frame components (sofa seat frame, sofa back frame, bed frame) capable of being fully retracted into the storage compartment. When neither sofa nor bed function is needed, the entire system occupies minimal floor space by being stored within the recessed space of the storage unit.
Solution Approach 2:
The sofa bed system employs dynamic pivotable connections between frame components, allowing seamless transition between stored, sofa, and bed configurations. The pivotable attachments enable the system to adapt its shape and footprint dynamically based on the required function.
2Adaptability or versatility
If the sofa bed system includes multiple pivotable frame components for conversion, then adaptability is improved, but device complexity increases
Solution Approach 1:
The sofa bed system is divided into distinct modular frame components: a sofa seat frame, a sofa back frame, and a bed frame. Each component can independently pivot and be positioned, allowing flexible configuration changes while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The pivotable frame components serve multiple functions: they provide structural support in all configurations, enable conversion between sofa and bed modes, and allow complete retraction into the storage unit. This multi-functionality reduces the need for additional specialized mechanisms.
3Area of stationary object
If the sofa bed can be fully stored in a recessed space, then floor space occupation is reduced, but ease of operation worsens due to deployment effort
Solution Approach 1:
The pivotable connections between frame components enable smooth, controlled deployment movements. The dynamic nature of the pivot joints allows the system to transition gradually from stored to deployed positions, distributing the mechanical effort across multiple degrees of freedom rather than requiring single-point force application.
Data Source
AI summary
A sofa bed system has four primary components, including a base unit that functions as a storage shell system and serves to delineate, for example, the separation between the living room and kitchen areas. The sofa seat portion includes the sofa seat frame, sofa seat pad, and seat support. The sofa backrest portion encompasses the sofa backrest, backrest frame support, and armrest. The remaining sofa bed components include the bed pad, bed frame, bed frame support and gas spring mechanism. The sofa bed can be stored within the base unit with the sofa seat pad and the sofa backrest pad being disposed outward, hiding much of the sofa bed framework there behind. The sofa bed can be initially opened into a sofa configuration and further opened into the bed configuration through a unique unfolding process.