Stroller Backrest Stability via Lifting Belt Restraint
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Solution Overview
Problem
Existing strollers face a risk of overturning due to the displacement of the backrest, which shifts the center of gravity rearward, especially when the backrest angle is adjusted, leading to instability.
Innovation Solution
A stroller design featuring a lifting belt that connects the backrest plate to the seat plate, preventing the backrest from moving downward and maintaining the center of gravity within a stable position, thereby preventing overturning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the backrest angle is adjusted to be larger for infant comfort, then the infant can lean back more comfortably, but the center of gravity shifts rearward causing increased risk of overturning
Solution Approach 1:
The lifting belt is pre-installed and connected to the backrest plate before use, creating a preliminary restraint system that prevents the backrest from moving downward when the infant leans back, thus maintaining stability while allowing angle adjustment
2Strength
If the backrest is made rigid for structural strength, then the backrest can support the infant, but the backrest may still displace downward when pressed, shifting the center of gravity rearward
Solution Approach 1:
The lifting belt acts as an intermediary element between the backrest plate and the seat cushion, providing a restraining force that prevents the backrest from displacing downward when pressed by the infant, thus maintaining center of gravity stability
Data Source
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AI summary
The present disclosure discloses a stroller comprising a carriage frame, a plurality of wheels mounted under the carriage frame respectively, a seat plate fixed to the carriage frame, a backrest plate connected to the carriage frame and angled relative to the seat plate, and a lifting belt connecting the backrest plate with a surface of the seat plate. The backrest plate of the stroller of the present disclosure has good stability, which can prevent the stroller from overturning after being pressed.