Foldable Bed Pivot Structure for Stable Locking and Ventilation
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Solution Overview
Problem
Conventional foldable beds have design flaws such as exposed securing sleeves affecting appearance, increased parts due to support members, lack of ventilation, heavy boards without apertures, and insufficient angle adjustment capabilities.
Innovation Solution
A foldable bed design featuring pivotally connected frames with pin holes and apertures for secure extension, U-shaped connectors for strength, wooden boards with ventilation holes, and adjustable support members for angle settings, along with a cover system for improved functionality and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If securing sleeves are used to prevent reverse pivoting, then the bed frame stability is improved, but the outer appearance is degraded due to exposed securing sleeves
Solution Approach 1:
The patent removes the traditional securing sleeves from the external view by integrating the limiting function into the pivot hole design. The pivot hole is positioned such that when the bed frame is fully extended, the pivot naturally reaches the end of the hole, preventing reverse pivoting without any external securing components visible on the surface.
Solution Approach 2:
The patent combines the pivot connection function and the reverse-pivoting prevention function into a single integrated structure. The pivot rod passes through the pivot hole, and the hole's positioning and dimensions simultaneously enable rotation and prevent over-rotation, merging two functions that traditionally required separate components.
2Reliability
If support members are used to prevent reverse pivoting, then the bed frame stability is improved, but the device complexity increases due to additional parts
Solution Approach 1:
The patent eliminates the need for separate support members by integrating the reverse-pivoting prevention function directly into the pivot connection structure. The pivot hole's design and positioning inherently prevent reverse motion without requiring additional support components.
Solution Approach 2:
The pivot connection structure serves multiple functions simultaneously: it connects the first and second frame, enables relative rotation for folding, and prevents reverse pivoting when fully extended. This multi-functional design eliminates the need for separate support members.
3Ease of manufacture
If conventional pivotal structure is used, then the manufacturing simplicity is maintained, but the adaptability is reduced due to insufficient angle adjustment capabilities
Solution Approach 1:
The patent makes the pivotal structure adjustable by providing multiple pivot holes at different positions and/or orientations on the frame. This allows the angle between the first and second frame to be dynamically changed by repositioning the pivot rod to different holes, enabling adaptation to various usage scenarios while maintaining a simple overall structure.
4Strength
If boards are made heavy for structural strength, then the bed frame strength is improved, but the transportation efficiency is degraded due to increased weight
Solution Approach 1:
The patent employs composite construction for the boards, combining wood with metal reinforcement elements or using engineered wood products. This composite approach provides the necessary structural strength while reducing the overall weight compared to solid heavy wood, improving transportation efficiency.
Data Source
AI summary
A foldable bed includes a first frame and a second frame. The first frame has a first board put thereon. A first connector is connected to the front end of the first frame and has a first pin hole and a first aperture which is located below the first pin hole. The second frame has a second board put thereon. A second connector is connected to the rear end of the second frame and has a second pin hole and a second aperture which is located below the first pin hole. A pivot extends through the first and second apertures to pivotably connect the first frame to the second frame. When the first and second frames are extended. A pin extends through the first and second pin holes.