Lin Kai-Chieh, Miao Wei, Liao Wan-Yu
Department of Industrial Design, Tatung University, Taipei, Taiwan.
The Graduate Institute of Design Science, Tatung University, Taipei, Taiwan.
Heliyon. 2022 Jul 2;8(7):e09866. doi: 10.1016/j.heliyon.2022.e09866. eCollection 2022 Jul.
Hand tool design should integrate the concept of Inclusive Design to be accessible to most users. However, current Inclusive Design strategies of product development are mostly used in post-design evaluation. The retention of inclusive properties in product when new functions are incorporated is essential. Fine operation-aid screwdrivers are designed according to user requirements to address frequently-encountered problems when using screwdrivers namely-insufficient lighting and difficulty in properly installing screws respectively. TRIZ method is applied, comprised the improving parameters solving the problems and worsening parameters which prevents the original inclusive design factors from being damaged into the contradiction matrix, and obtains a set of innovation principles. Eight experts were consulted for their design ideas and developed two fine operation-aid screwdrivers embracing the concept of Inclusive Design. Furthermore, factors regarding the two major operating problems were added to an existing hand tools Inclusive Design Scale. After correlation analysis, the inclusive fine operation-aid screwdriver evaluation scale was established. In addition, two more screwdrivers were selected with the same functions and high reviews on the market as control samples, and 39 users were recruited using a quota sampling strategy to participate in Inclusive Design evaluations. The results revealed that the fine operation-aid screwdrivers evidently solved the two major operating problems in terms of the five dimensions including functionality, comfort, professionality, safety, and usability in the inclusive fine operation-aid screwdriver evaluation scale, thereby affirming the rationality and reliability of our hand tool development approach.
手动工具设计应融入包容性设计理念，以便大多数用户都能使用。然而，当前产品开发中的包容性设计策略大多用于设计后的评估。在加入新功能时保持产品的包容性特性至关重要。精细操作辅助螺丝刀是根据用户需求设计的，分别解决了使用螺丝刀时经常遇到的照明不足和螺丝安装困难的问题。应用了TRIZ方法，将解决问题的改进参数和防止原始包容性设计因素受损的恶化参数纳入矛盾矩阵，从而获得了一组创新原则。咨询了八位专家的设计想法，并开发了两款融入包容性设计理念的精细操作辅助螺丝刀。此外，将与这两个主要操作问题相关的因素添加到现有的手动工具包容性设计量表中。经过相关性分析，建立了包容性精细操作辅助螺丝刀评估量表。此外，选择了另外两款功能相同且在市场上评价较高的螺丝刀作为对照样本，并采用配额抽样策略招募了39名用户参与包容性设计评估。结果表明，在包容性精细操作辅助螺丝刀评估量表的功能、舒适度、专业性、安全性和可用性这五个维度上，精细操作辅助螺丝刀明显解决了两个主要操作问题，从而肯定了我们手动工具开发方法的合理性和可靠性。
