Inertial micro-switch capable of prolonging contact time

A novel inertial micro-switch capable of prolonging contact time and reducing the contact-bouncing effect is proposed. Based on the nonlinear-spring shock stop, both the moveable and the fixed electrodes are made flexible by using a moveable contact point and a cascaded beam, respectively. The switc...

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Veröffentlicht in:	Electronics letters 2013-08, Vol.49 (18), p.1167-1168
Hauptverfasser:	Deng, Kangfa, Su, Weiguo, Li, Song, Zhang, Yating, Zhang, Wei
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences bulk micromachining process cascaded beam contact time prolonging contact‐bouncing effect reduction drop hammer test electrical contacts Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electronics Exact sciences and technology inertial microswitch Instruments, apparatus, components and techniques common to several branches of physics and astronomy Mechanical instruments, equipment and techniques micromachining Micromechanical devices and systems microswitches movable contact point nonlinear‐spring shock stop Organic and inorganic circuits and devices Physics
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Beschreibung
Zusammenfassung:	A novel inertial micro-switch capable of prolonging contact time and reducing the contact-bouncing effect is proposed. Based on the nonlinear-spring shock stop, both the moveable and the fixed electrodes are made flexible by using a moveable contact point and a cascaded beam, respectively. The switch was successfully fabricated by bulk micromachining process. From the drop hammer test, the switch-on time increased with an increase of the input acceleration and reached a maximum of 335 μs, which is over 30 times larger than that of the traditional switch; and no bounce occurred.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2013.0872