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US 9,418,803 B2Granted
Inertia switch
AssigneeNational Tsing Hua University
InventorsYu-Che Huang, Chang-Yi Liu, Wei-Leun Fang
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AssigneeNational Tsing Hua University
InventorsYu-Che Huang, Chang-Yi Liu, Wei-Leun Fang
Estimating the term…
An inertia switch includes a stack of a base plate and a base cover. The base plate provided inside a liquid storage chamber and a sensing chamber communicating with a liquid storage chamber. The liquid storage chamber contains working fluid, and the sensing chamber equipped with a sensing electrode extending to and connected to an external equipment that tend to interact with the inertia switch. The electricity-conductive liquid is utilized as a medium for inertia detection. Furthermore, by the width, depth and angle of the flow channel design, when the liquid material flows into the sensing chamber through the channel after a time delay, a sensing signal is obtained by the sensing electrodes through a change of a resistance value or a capacitance value to actuate the switch. The inertia switch has a simple structure and is low cost.
An inertia switch, comprising a base plate and a cover plate overlaid on the base plate, wherein the base plate includes a liquid storage chamber, a sensing chamber, and a channel communicating between the liquid storage chamber and the sensing chamber, a working fluid is stored in the liquid storage chamber, and a sensing electrode has a main portion directly above the sensing chamber and has an extending portion extending outside the inertia switch,
Dependencies are inferred from the claim text.