Foldable Bed Frame Nesting Design to Reduce Packaging Height
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Solution Overview
Problem
Conventional foldable electric beds have a high folded height due to overlapping frame halves, which increases packaging volume and storage costs.
Innovation Solution
A foldable bed design with frame units that include outboard and inboard rods, panel assemblies, and electric drivers, allowing the first outboard and inboard rods to be received in rod receiving spaces when folded, reducing the folded height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the first and second frame units are overlapped in the up-down direction when folded, then the folded bed has a compact structure, but the folded height becomes relatively large which undermines the aim of reducing packaging volume
Solution Approach 1:
The first outboard rod and first inboard rod are nested within the rod receiving space defined by the second outboard rod and second inboard rod when the frame units are folded. This nesting arrangement allows the rods to occupy the same spatial envelope, significantly reducing the folded height while maintaining structural integrity and minimizing packaging volume.
Solution Approach 2:
The patent transitions from a conventional side-by-side folding arrangement to a nested arrangement where rods are positioned in the up-down dimension rather than lateral dimensions. By receiving the first frame unit's rods within the space occupied by the second frame unit's rods in the up-down direction, the design achieves compact vertical stacking that reduces both folded height and packaging volume.
2Volume of moving object
If the second outboard rods are spaced apart by a larger distance than the first outboard rods, then the rod receiving space is sufficient to accommodate both frame units, but the frame structure becomes more complex
Solution Approach 1:
The frame units are segmented into distinct components (outboard rods, inboard rods, panel assemblies) with standardized interfaces. The rod receiving space is created by spacing the second outboard rods to accommodate the first frame unit's rods, allowing modular assembly and disassembly while maintaining structural integrity.
Solution Approach 2:
The second outboard rods serve dual functions: they provide structural support for the second frame unit and simultaneously define the rod receiving space that accommodates the first frame unit's rods. This multi-functionality reduces the need for additional components, simplifying the overall frame structure while achieving compact folded volume.
Data Source
AI summary
A foldable bed includes a first frame unit, a second frame unit and a first electric driver. The first frame unit has two first outboard rods and two first inboard rods. The second frame unit is connected with the first frame unit, and has two second outboard rods and two second inboard rods. Each second outboard rod is spaced apart from an adjacent second inboard rod to define a rod receiving space therebetween. When the first and second frame units are in a folded state, each first outboard rod and an adjacent first inboard rod are received in the rod receiving space. In the folded state, a folded height of the first and second frame units is sum of a height of one second outboard rod, a height of a first panel assembly and a height of a second panel assembly so as to reduce the folded height.