The first report says robot industry will be the markets scale of 8 trillion yen even the expectation until 2025. But, service robot which got it off researcher's hands does not take an active part in the markets. The reason why the market of the service robot is not formed is that there is a problem in safety. To this problem, engineers in our county have to do an immediate, global correspondence. We propose safety concept is to avoid not only injured contact, painful contact too, and show one of example of impact experiment. This paper demonstrates the possible of our safety concept.
