Abstract
Product is produced as a design satisfying various requests. However, it does not mean designers implement only the required functions for the product to demonstrate these functions. It is important for designers to take measures regarding the requirements to usage environment and usage that may have an undue influence on products, because some environments and usage cause troubles with products. In this study, we construct a new method to extract the design requirement from usage environment and usage as new starting points of the design. Therefore, in this study we have considered the relationship between the usage environment, usage and products by collecting variety of case studies. As a result, we revealed the relationship between products, usage environment, and usage that may be expressed as integration of the items: "Usage Environment, Usage", "Environmental Stress Factor", "Events caused by ESF", "Requirements", "Functions" and "Products".
