抄録
Pop-up books are made by cutting sheets with creases and combining multiple sheets to create a structure that can fold flat. Many mechanisms enable complex movements that are difficult to achieve with origami using a single continuous sheet, and they are expected to be applied to deployable structures. In this study, we clarify the kinematics of an in-plane rotating mechanism called the V-fold twister, which has been used in pop-up books, and aim to apply it to engineering applications. In particular, we evaluate and design its bistability, which has not been reported before. We provide the geometric model to identify the model with bistability removed with a single-vertex mechanism of rigid origami. We also devise a method to design kiriorigami from any single-vertex origami, and introduce a kiriorigami structure that is identical to the V-fold twister. Furthermore, we propose a deployable structure called "bistable pop-up scissors," which is an application of the V-fold twister, as well as a stacked version of this structure.