The design contradiction is found out and standardized , and then it is solved using the 39 standard parameters , 40 inventive principles and contradiction matrix in triz . at last the inner structure and the outline of the toilet seat are drawn ?通过对问题的深入分析,找出冲突并将冲突标准化,然后应用triz中的39个标准参数、 40条发明原理和冲突解决矩阵将其解决,最后给出产品的内部结构简图及外型图。