In the automotive field, safety has become a world-wide issue along with energy and the environment. In an effort to propose a shock isolator based on a new principle, the authors have formulated an idea of isolating and reducing shock by transforming rectilinear motion into circular motion. It is called a swinging unit. According to its principle, it is a shock isolator, not absorber. In the first part of this report, the transformation of motion is described and an analysis of the fundamental characteristics of the swinging unit is given (See IRRD 856888). This time, a new bumper system is prepared composed of the swinging unit and two oil cylinders. An experimental vehicle model was made and the new bumper system was installed in it. Then, an experiment was conducted using the vehicle model to verify whether the new bumper system is effective in reducing shock. The experimental results show that the new system is effective. The cost may be the main factor in deciding whether it will be used in practical applications.
Abstract