From the macroscopic point of view, the first thing that should be considered is security, and things that come out must not have potential security risks. The second is to pay attention to the appearance of the structure. The appearance should be novel. The third is the cost.
From functional considerations, such as folding, front and rear wheel avoidance, handrail adjustment, seat adjustment, etc., then calculations, loads, strengths, structures, etc. Finally, the calculation results are considered from safety, environmental protection, economic considerations, including metal, Plastics, fabrics, paints, etc. Suggestions: 1. The single structure contains a single function or as few functions as possible, because it will affect the stability and reliability of the structure; 2. Check the GB14748-2006 national stroller standard; 3. Use more standard parts, such as front and rear wheels Diameter, universal wheel specifications, etc.; 4. Consider the actual, such as the rear wheel to avoid heavy spring and inflatable generally, the front wheel spring, baby bed is generally less than 170 degrees, otherwise it will suck milk and affect the baby's spine growth and blood circulation; 5. Humanity considerations, length adjustment of handrails, easy removal and installation.
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