Single folding sofa bedstead
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Solution Overview
Problem
Existing folding sofa beds require sequential, tedious unfolding processes due to independent mechanisms, leading to potential damage from misoperations.
Innovation Solution
A single folding sofa bedstead design featuring interconnected rod assemblies and linkage rod groups that allow simultaneous, coherent unfolding of frames, minimizing interference between parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If independent mechanisms are used for each folding structure, then the structure is simple and easy to manufacture, but the unfolding process becomes tedious and requires sequential operation
Solution Approach 1:
The patent merges multiple independent folding mechanisms into a unified linkage system where rod assemblies and linkage rod groups connect the first, second, and third frames. This integration allows simultaneous unfolding of all frames through a single initiating action, eliminating the need for sequential manual unfolding of each independent mechanism while maintaining structural simplicity.
2Device complexity
If sequential unfolding is required, then the mechanism can be simpler, but the time and effort required for operation increases
Solution Approach 1:
The linkage rod groups and rod assemblies create a continuous mechanical action that propagates the unfolding motion from the third frame to the second frame, and then to the first frame simultaneously. This continuous action eliminates idle time between unfolding steps, allowing the entire bedstead to be deployed in one continuous motion sequence rather than discrete sequential steps.
3Ease of manufacture
If independent folding structures are used, then each part can be manufactured separately, but the risk of part damage from misoperation increases
Solution Approach 1:
The rod assemblies and linkage rod groups act as intermediaries that coordinate the motion between the first, second, and third frames. This intermediary mechanism ensures that all frames unfold in a synchronized manner, preventing misoperation that could cause damage to the soft packets or structural components, while still allowing each frame to be manufactured as a separate component.
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
Facilitates seamless, damage-free unfolding of the sofa bedstead, reducing user effort and preventing part damage during operation.
Implementation Method 1
a first linkage rod group, and a second linkage rod group. The first linkage rod group is pivotally connected to the first connecting rod assembly. The other end of the first linkage rod group is pivotally connected to the second connecting rod assembly
Implementation Method 2
The first frame is pivotally connected to one side of the second frame, and the third frame is pivotally connected to the other side of the second frame
Data Source
AI summary
A single folding sofa bedstead includes a bedstead frame body, a frame assembly, a first connecting rod assembly, a second connecting rod assembly, a first linkage rod group, and a second linkage rod group. The frame assembly has a first frame, a second frame, and a third frame. The first frame is pivotally connected to one side of the second frame, and the third frame is pivotally connected to the other side of the second frame. One end of the first connecting rod assembly is pivotally connected to the first frame, and the other end of the first connecting rod assembly is pivotally connected to the bedstead frame body. One end of the second connecting rod assembly is pivotally connected to the second frame, and the other end of the second connecting rod assembly is pivotally connected to the bedstead frame body.