Abstract
The present invention discloses an inertia switch, which includes a stack of a base plate and a base cover. Said base plate provided inside a liquid storage chamber and a sensing chamber communicating with a liquid storage chamber. Said liquid storage chamber contains working fluid, and the sensing chamber equipped with a sensing electrode extends to and connected to external devices that connected with the inertia switch. The present invention utilizes the electricity-conductive liquid as inertia sensing's detecting element, and by the width, depth and angle of the flow channel design, when the time delay mechanism as liquid material through the flow channel into the storage chamber, a sensing signal is obtained by the sensing electrodes through a change of a resistance value or a capacitance value. Thereby gives a signal to the switch and starts an operation. The inertia switch in accordance with present invention is of simple structure and low cost.