Foldable bed frame
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Solution Overview
Problem
Existing foldable bed frames are inconvenient to use due to the difficulty in unlocking telescopically coupled bars and separate bedding supports that cannot be folded or unfolded with the frame, requiring detachment and reattachment.
Innovation Solution
A foldable bed frame design featuring pivotally connected bedsteads, a middle leg assembly, and a lower peripheral support with links and oblique supports that allow for easy folding and unfolding, along with oblique supports that can be selectively locked to stabilize the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If telescopically coupled bars with push buttons are used to connect legs, then the bed frame can be folded, but the buttons are difficult to unlock requiring hard pushing
Solution Approach 1:
The patent replaces the push button unlocking mechanism with a pedal-operated releasing mechanism. The pedal leverages body weight and leverage principle to generate sufficient force for unlocking without requiring manual pushing, thus substituting a difficult manual mechanical operation with a more ergonomic pedal-based mechanical system.
Solution Approach 2:
The patent introduces a vertical dimension by adding a pedal that extends downward from the lateral bar. This allows the user to apply force in a vertical direction (pressing the pedal down with body weight) rather than horizontally pushing buttons, making the unlocking operation easier and more natural.
2Adaptability or versatility
If bedding supports are attached separately after unfolding, then they can provide additional support, but they cannot be folded or unfolded with the frame requiring detachment
Solution Approach 1:
The patent merges the bedding support structure with the lateral bars of the bed frame. The supports are integrated into the same structural elements that enable folding, allowing them to move together as a unified system. This eliminates the need for separate attachment and detachment operations.
Solution Approach 2:
The lateral bars serve multiple functions: they connect the legs for structural stability, enable the folding mechanism through the pedal-operated release, and support the bedding structures. This multi-functionality allows the bedding supports to be automatically included in the folding/unfolding process without requiring separate operations.
3Stability of the object's composition
If lateral bars connect legs for stability, then the frame is stabilized, but the bars prevent easy folding of the legs
Solution Approach 1:
The patent makes the lateral bar's connection to the legs dynamic rather than fixed. The pedal-operated releasing mechanism allows the connection to transition between locked (stable) and unlocked (foldable) states. This dynamic capability enables the structure to provide stability during use while allowing easy folding when needed.
Solution Approach 2:
The patent changes the state parameter of the lateral bar connections from permanently fixed to temporarily locked/unlocked. The pedal mechanism alters the engagement state of the connection, enabling it to switch between providing rigid structural support and allowing movement for folding, thus resolving the contradiction between stability and foldability.
Data Source
AI summary
A foldable bed frame includes pivotally connected bedsteads. A bedstead includes an upper frame and a side leg assembly pivotally connected with the upper frame. A bedstead also includes one or more oblique supports each pivotally connected with the upper frame and slidably and rotatably connected with the side leg assembly. A bedstead further includes a “⊏” shaped lower peripheral support and a plurality of links connecting the lower peripheral support with the upper frame and the side leg assembly. The lower peripheral support can be folded and unfolded along with the upper frame and the side leg assembly.