Foldable Bed Frame with Nested Middle Leg for Compact Storage
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Solution Overview
Problem
Conventional foldable bed frames either have a large footprint when folded, making them inefficient for shipping, or lack storage space and aesthetic appeal when unfolded, and often struggle to keep bed skirts in place, leading to cleaning challenges.
Innovation Solution
A foldable bed frame design featuring pivotally connected frame units with upper and lower frames, vertical links, limiting pieces, and a middle leg assembly that allows for compact folding, storage space creation, and effective bed skirt management, including elastic members to maintain the skirt's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the middle leg is connected to middle portions of longitudinal bars of the top frame, then the bed frame can be supported, but the folded bed frame has a large dimension (height or thickness) equal to the sum of the folded top frame and middle leg dimensions
Solution Approach 1:
The middle leg is designed to be received within the top frame when folded, with the middle leg fitting inside the longitudinal bars of the top frame. This nesting arrangement allows the middle leg to be stored within the frame structure rather than extending outward, significantly reducing the folded height and thickness of the bed frame while maintaining support capability when unfolded.
2Shape
If a bed skirt is draped down close to the ground to cover the space underneath, then the aesthetic appearance is improved, but the bed skirt slides easily and falls to the ground, requiring repeated adjustment
Solution Approach 1:
A connecting assembly with connecting pieces is introduced as an intermediary mechanism between the bed skirt and the frame structure. The connecting pieces attach the bed skirt to the middle leg and lower frame, providing a mechanical linkage that prevents the skirt from sliding or falling while maintaining the desired aesthetic appearance when draped close to the ground.
3Shape
If the bed skirt is draped close to the ground, then the appearance is improved, but it is inconvenient for cleaning the ground underneath
Solution Approach 1:
The bed skirt system is made dynamic through the connecting assembly that allows the skirt to be easily attached and detached. When cleaning is needed, the skirt can be quickly removed from the connecting pieces, providing full access to the ground underneath. After cleaning, the skirt is reattached to restore the aesthetic appearance, making the system adaptable to different operational needs.
4Device complexity
If the upper and lower frames are connected by supporting bars without legs, then the structure is simplified, but the height of the resulting bed is relatively low and there is no space underneath to serve as storage spaces
Solution Approach 1:
The supporting structure is segmented into multiple functional components: supporting bars for basic connection, middle legs for height adjustment and storage creation, and connecting pieces for modular assembly. This segmentation allows the middle legs to extend the height of the lower frame, creating usable storage space underneath while maintaining relatively simple structural complexity through modular design.
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
The design achieves a compact folded state, provides storage space, maintains the aesthetic appearance by holding bed skirts in place, and facilitates easy cleaning underneath the bed frame.
Implementation Method 1
Each middle leg includes an inner tube and an outer tube slidably coupled to each other
Data Source
AI summary
A foldable bed frame includes frame units pivotally connected to each other by one or more connecting assemblies. A frame unit includes upper and lower frames, legs or links connected to the upper and lower frames, and limiting pieces disposed on the upper and lower frames to limit rotation angles or directions of the legs or links. A connecting assembly includes middle leg(s) or middle bar(s), and connecting pieces. When folded, the bed frame is compact. When unfolded, the bed frame provides storage spaces underneath, and facilitates positioning and holding of bed shirts/sheets.