ACCELERATION SWITCH AND ELECTRONIC DEVICE

摘要

An acceleration switch is provided with a mass body that has a vacant space therein; an arc-shaped beam that supports the mass body, and that is arranged so as to surround the mass body; a supporting section that is arranged around the mass body in a state of having the beam secured; and an opposing electrode that exists within the vacant space inside the mass body, and detects any contact with the mass body. There is one beam that supports the mass body, and the distance between the inner side-face of the mass body and the outer side-face of the opposing electrode, which is the inter-electrode distance, is 1 µm to 20 µm inclusive.