Demonstration of Haptic Devices with Variable Volume Using Spiral Spring Structures

Controllers that convey tactile sensations of object size in virtual environments are crucial for user interaction. However, existing research often faces commercialization constraints due to the complexity and high number of actuators required. This study proposes a haptic device that utilizes a spiral spring structure that offers approximately three times the variable range with a single actuator. This system can quickly render the diameters of objects grasped by users and simulate continuous volume changes, such as inflating a balloon. Due to its simple structure and wide variable range, this system is expected to be suitable for various scenarios, providing users with a more immersive virtual reality experience.