PROBLEM TO BE SOLVED: To solve problems of hand vibrators which need to have a vibrating mechanism inside as exclusive tools such as an electric massager, electric toothbrush, motor-driven dish washing tool, electric scalp brush, etc., of numerous tools that enhance their operations by vibration of tools on hand, which have high cost because they are combinations of a vibration device and a tool of respective purposes, and which sometimes have difficulty of taking in the vibrating mechanism depending on the size and the shape peculiar to tools.SOLUTION: The hand vibrator of the present invention has as the main components a motor-driven vibrating device and an installation part for wearing on a hand. The installation part is structured such that a flat plate is spread laterally from a shaft extended downward from the vibrating device. By arranging the shaft in the fork between two fingers, the vibrating device is securely set on the back of the hand, with the two fingers surrounded by the flat plates, the shaft and the vibrating device. Since a movable region of the fingers is large, vibration can be imparted to various hand tools for use.
