Baby Carriage Cushion Structure for Strength and Ventilation
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Solution Overview
Problem
Baby carriages often have insufficient structural strength and ventilation, posing safety risks and discomfort for infants, which can lead to suffocation if the cushion covers the baby's mouth and nose.
Innovation Solution
A baby carriage cushion with reinforcing plates and a fabric cover, featuring a P-shaped reinforcing rib with a gap between its sections and through holes for improved ventilation, distributed to prevent stress concentration and enhance coziness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cushion is made with solid structure to improve structural strength, then the safety is improved, but the ventilation is blocked and suffocation risk increases
Solution Approach 1:
The reinforcing plate is designed with through holes penetrating it, transforming the solid structure into a porous one. This allows air to pass through the cushion, maintaining ventilation while the reinforcing plate edges provide structural support. The porous design directly resolves the contradiction by enabling both strength and breathability.
Solution Approach 2:
The cushion combines multiple materials including the fabric cover, cushioning layer, and reinforcing plate with through holes. This composite structure integrates the softness and breathability of fabric with the strength of the reinforcing plate, while the through holes ensure ventilation is maintained despite the presence of rigid support elements.
2Strength
If the reinforcing rib is made as a continuous closed structure to improve structural strength, then the strength is improved, but stress concentration occurs and the rib breaks easily
Solution Approach 1:
The reinforcing rib incorporates curved sections instead of sharp corners or straight continuous lines. The curved geometry distributes stress more evenly along the rib structure, preventing stress concentration at sharp angles. This allows the rib to maintain structural strength while being more resistant to breaking under load.
Solution Approach 2:
The reinforcing rib is designed with gaps between its sections rather than as a continuous closed loop. This segmentation prevents stress from building up throughout the entire structure, allowing individual sections to flex independently and reducing the likelihood of complete failure. The rib maintains support function while improving reliability.
3Object-affected harmful factors
If the cushion is made with through holes to improve ventilation, then the ventilation is improved, but the structural strength is reduced
Solution Approach 1:
The reinforcing plate with through holes is strategically positioned within the cushion structure where it is needed for both support and ventilation. The plate edges and surrounding fabric provide localized structural reinforcement, while the through holes are placed to maximize airflow paths. This local optimization allows ventilation without compromising overall structural integrity.
Data Source
AI summary
A baby carriage comprises a frame and a cushion. The cushion is disposed on the frame. The cushion comprises a plurality of reinforcing plates and a fabric cover. The reinforcing plates are disposed in the fabric cover. The reinforcing plates are arranged side by side and separated from each other. At least one of the reinforcing plates comprises a plate body and a first reinforcing rib. The plate body has a plurality of through holes formed thereon. The first reinforcing rib is located on a bottom surface of the plate body. The first reinforcing rib comprises a straight section and a curved section. The curved section extends from the straight section. A gap exists between an end of the curved section and one of the straight section and the curved section.