Abstract
Baby chairs are important equipment in the early stages of child care. An ergonomic, comfortable, and safe baby chair is the most important point that is expected by a customer. An ergonomic and safety baby chair will provide better comfort for the baby since the higher need for affection and emotional bonds. The research aimed to investigate and develop an ergonomic baby chairs design with considering comfort and regulatory safety standards. The initial step was product design scoring based on customer voice using simple decision matrices. Optimization of the structure material selection parameters was carried out by using a numerical simulator based on the factor of safety. The research shows that a baby chair need to have safety features such as castors with brake, 5-points restrain system, adjustable or recline seat, detachable tray. Durability features are also important, such as high tensile strength, wear and impact-resistant material, and lightweight aluminium structure. As a result, a hollow aluminium pipe with a diameter of 26 mm for the chair structure is the most economic choice with a factor of safety 4.8.
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