Fixing structure for cushion layer of sofa bed and sofa bed
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Solution Overview
Problem
Existing sofa beds face issues such as unstable transitions between sofa and bed configurations, shifting cushions, inadequate base support, and complex folding mechanisms, making them difficult to operate and assemble.
Innovation Solution
A fixing structure for the cushion layer of a sofa bed, comprising connecting members and intermediate connecting members to secure the cushion and elastic layers together, along with a structural frame that allows for adjustable angles and stable mounting of bed components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional sofa bed designs are used, then the basic sofa and bed functions are provided, but the transitions between configurations are not smooth and stability is compromised
Solution Approach 1:
The patent employs dynamic connection mechanisms including rotatable connections between the seat and backrest, and adjustable connections between the bed frame and bed panels. These dynamic connections allow smooth transitions between sofa and bed configurations while maintaining stability through controlled movement paths and positioning mechanisms.
Solution Approach 2:
The sofa bed is divided into multiple independent modules: seat module, backrest module, bed frame module, and bed panel modules. Each module can be independently adjusted or folded, enabling smooth configuration transitions while maintaining overall structural stability through modular design.
2Adaptability or versatility
If simple folding mechanisms are used, then the device complexity is reduced, but the mechanisms fail to meet diverse user needs
Solution Approach 1:
The folding mechanisms incorporate dynamic adjustment capabilities with multiple positioning points and adjustable connection angles. Users can adjust the bed panels to different positions and angles to meet diverse needs, while the mechanisms remain manageable through intuitive design and standardized components.
3Ease of manufacture
If cushions and elastic layers are not secured, then the manufacturing cost is reduced, but they shift relative to each other during use
Solution Approach 1:
The cushion layer and elastic layer are merged into a unified assembly through the fixing structure. The connecting members integrate both layers together, preventing relative movement while maintaining ease of manufacture through standardized connection components that simplify the assembly process.
4Strength
If the base support structure is not optimized, then the manufacturing cost is reduced, but it cannot adequately support both sofa and bed configurations
Solution Approach 1:
The base support structure is designed with multi-functionality to support both sofa and bed configurations. The bed frame includes adjustable connections and reinforcing structures that provide adequate support for both configurations without requiring completely separate support systems, balancing strength and complexity.
Data Source
AI summary
A fixing structure for a cushion layer of a sofa bed is provided. The sofa bed includes a left armrest, a right armrest, and a bed frame. A position of the bed frame is fixedly located between the left armrest and the right armrest, and the bed frame is disposed with an elastic layer and a cushion layer in sequence. The elastic layer includes a plurality of first connecting members spaced apart from each other in a circumferential direction of the elastic layer. A lower surface of the cushion layer includes a plurality of second connecting members spaced apart from each other in a circumferential direction of the cushion layer, and the plurality of first connecting members are connected to the plurality of second connecting members through one or more intermediate connecting members.