基于TRIZ和QFD理论的视障儿童玩具创新设计

目的 设计一款适合视障儿童的创新型玩具。方法 利用QFD理论建立视障儿童用玩具的质量屋，将顾客需求转化为产品技术特性，找到两对技术矛盾：外形与凹凸块契合度的矛盾，即外形越大，契合度越难；外壳材质与声音的矛盾，即在杨氏模量一定的情况下，外壳的密度越小，声速越大、响度越大。利用TRIZ理论的39个通用工程参数和40个发明原理解决上述两对技术矛盾。结论 提出了一种可行性方案，主要包括外形、内部构造与玩法3部分的设计，与目前市场上现有的视障儿童玩具相比该创新型玩具同时达到了锻炼视障儿童的记忆力、感知能力、认知能力和动手操作能力的效果。

Innovative Design of Toy for Visually Impaired Children Based on TRIZ and QFD

The work aims to design an innovative toy suitable for visually impaired children. The QFD theory was used to establish the house of quality of toys for visually impaired children. The customer needs were transformed into the technical characteristics of the products, and two pairs of technical contradictions were found: the contradiction between the shape and the fit degree of concave-convex blocks, i.e. the bigger the shape, the harder the fit degree; the contradiction between the shell material and sound, that is, under the condition of constant Young modulus, the smaller the density of the shell, the greater the sound speed and loudness. The two pairs of technical contradictions above were solved with 39 general engineering parameters and 40 inventive principles of TRIZ theory. A feasible scheme is proposed. It mainly includes three parts: shape, internal structure and playing method. Compared with the existing toys for visually impaired children on the market, the innovative toy achieves the effect of exercising the memory, perception, cognitive and manipulative ability of visually impaired children at the same time.