Vehicle Sofa-Bed Assembly with Gap-Free Flat Bed Conversion
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Solution Overview
Problem
Conventional sofa-beds in vehicles often leave a gap between the seat and back cushions when converted into a bed, resulting in an uncomfortable, non-flat sleeping surface.
Innovation Solution
An adjustable sofa-bed assembly with a base that can be permanently mounted or equipped with removable legs, featuring scissor arms and sliding mechanisms to align the seat and back portions completely flat, eliminating gaps and allowing for additional features like power operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional sofa-bed design is used, then the structure is simple and easy to manufacture, but a gap is left between the seat cushion and back cushion when converted into a bed, creating an uncomfortable sleeping surface
Solution Approach 1:
The sofa-bed is divided into separate modular components including a base, seat cushion, back cushion, and scissor arms. This segmentation allows each component to be independently designed and manufactured with specific functions, enabling the seat and back portions to align perfectly flat when converted to bed configuration while maintaining ease of manufacture through modular assembly
Solution Approach 2:
The sofa-bed incorporates dynamic scissor arms and sliding mechanisms that enable smooth transition between sofa and bed configurations. These mechanical elements allow the seat and back portions to move relative to each other, ensuring they align completely flat when in bed mode, thereby improving sleeping comfort without complicating the manufacturing process
2Stability of the object's composition
If the base is permanently mounted to the vehicle, then the installation is simple and stable, but additional elements cannot be installed beneath the sofa-bed
Solution Approach 1:
The base is designed with removable leg portions that can be detached to provide access to the space beneath the sofa-bed. This dynamic design allows the base to be stable during normal use while enabling installation of additional elements such as power elements or storage compartments when needed, thus providing both stability and adaptability
3Adaptability or versatility
If the sofa-bed is designed with removable legs for accessibility, then additional equipment can be installed beneath, but the device complexity increases
Solution Approach 1:
The base is segmented into permanent and removable portions, with the removable legs designed as simple, straightforward components. This segmentation provides adaptability for installing additional equipment beneath the sofa-bed while keeping each individual component simple in design, thereby minimizing overall device complexity despite the added functionality
Data Source
AI summary
An adjustable sofa-bed assembly for use within a vehicle such as a van or RV. The sofa-bed includes a seat portion, a back portion, and either a permanently fixed base or a removable leg portion which allows the legs to be installed into the vehicle prior to installing the seat and back portions to allow for additional elements to be installed beneath the sofa-bed, such as power elements for a powered sofa-bed assembly or for other equipment. The sofa-bed can be transformed from a sofa configuration with an upright back portion to a bed configuration with a laid-flat back portion. When in the bed configuration, the seat portion and back portion are aligned such that there is no gap between the two portions and the two portions lie completely flat, forming a complete bed assembly.