The innovative design of schoolbag for elementary school students by integrating functional demand-oriented and TRIZ

In Taiwan, the features of the commercially available schoolbags for senior elementary students cannot meet their actual needs. Moreover, when the commercially available schoolbag is loaded with a certain weight, the comfort of carrying it on the back has not been scientifically tested. A schoolbag with features that meet the needs of the students and scientifically tested comfort is indispensable. Therefore, this study conducted questionnaire survey to identify the most needed functional features of schoolbags for the elementary school students of senior grades. Moreover, TRIZ was applied to implement the innovative design of the schoolbag for elementary school students. The Borg RPE rating scale score of the proposed innovative schoolbag is 10, which is lower than the score of the commercially available schoolbag of 13, suggesting the use of the proposed innovative schoolbag provides higher comfort. In the test, fifth grade elementary school students were asked to carry the schoolbag with a weight of 5kg to continuously run for 4 minutes. When carrying the innovative schoolbag, the heartbeat bpm of the students increased by 32.5, which is lower than that of the commercially available schoolbag heartbeat bpm of 37.5. This also suggests that the proposed innovative design of schoolbag provides higher comfort in use. The research results have high practical value, so the schoolbags can better meet the needs of the students.