Iron Frame Bed with Segmented Longitudinal Beams to Reduce Deformation
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Solution Overview
Problem
The existing bed frames of iron frame beds suffer from weakness and susceptibility to bending deformation due to the thinness of the metal frame rods, which can lead to breakage under small lateral forces, posing a challenge in meeting design test requirements without increasing production costs.
Innovation Solution
The proposed bed frame design incorporates two transverse rods and two longitudinal rods forming a rectangular frame, with two or three longitudinal beams dividing the frame into individual cells where shorter frame rods are transversely arranged, connected to the longitudinal rods and beams, enhancing resistance to deformation without increasing overall weight or production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If the metal frame rods are made thinner to reduce weight and production cost, then the product competitiveness is improved, but the strength and resistance to deformation deteriorate
Solution Approach 1:
The longitudinal rods are segmented by adding transverse connecting pieces at regular intervals, dividing each longitudinal rod into multiple sections. This segmentation allows the use of thinner individual rod sections while maintaining overall structural strength through the distributed connecting pieces that prevent bending deformation.
Solution Approach 2:
The design transitions from a two-dimensional grid of thin rods to a three-dimensional reinforced structure by adding connecting pieces that create vertical bracing elements. This dimensional addition provides lateral support to the thin frame rods, preventing deformation without increasing rod thickness or overall weight significantly.
2Strength
If connecting pieces are added at middle positions of metal frame rods to improve strength, then the resistance to deformation is improved, but the device complexity and production cost increase
Solution Approach 1:
The connecting pieces serve multiple functions simultaneously: they provide lateral support to prevent rod deformation, act as additional support points for the mattress, and create a bracing structure that enhances overall frame rigidity. This multi-functionality reduces the need for separate components, simplifying the overall structure despite the added reinforcement.
Solution Approach 2:
The connecting pieces are integrated into the existing frame structure, merging the reinforcement function with the support function. Rather than adding separate bracing elements, the connecting pieces are positioned to serve both as structural reinforcements and as part of the support system, reducing overall component count and assembly complexity.
3Strength
If the gap between adjacent metal frame rods is reduced to improve deformation resistance, then the strength is improved, but the quantity of rods must increase leading to higher production cost
Solution Approach 1:
Instead of increasing the number of thin rods by reducing gaps, the longitudinal rods are segmented with connecting pieces that provide reinforcement at critical intervals. This segmentation approach maintains larger gaps between rods while achieving equivalent or superior deformation resistance through the bracing effect of the connecting pieces.
Solution Approach 2:
The design changes the structural parameters by introducing connecting pieces with specific spacing and dimensions, transforming the reinforcement mechanism from relying on rod density (quantity) to relying on structural configuration (arrangement and dimensions of connecting pieces), thereby reducing the total number of rods needed.
Data Source
AI summary
A bed frame of an iron frame bed comprises two transverse rods, two longitudinal rods, four upright columns, and a plurality of frame rods. The two longitudinal rods and the two transverse rods form a rectangular frame, and a length of each of the two transverse rods is greater than a length of each of the two longitudinal rods. The iron frame bed further comprises two or three longitudinal beams connected to the two transverse rods, and the two or three longitudinal beams divide the rectangular frame into three or four individual cells. The plurality of frame rods are arranged transversely, and a length of each of the plurality of frame rods is shorter than a length of each of the two or three longitudinal beams. The plurality of frame rods are connected to the two longitudinal rods or the two longitudinal beams.