公开(公告)号：US20210190822A1

公开(公告)日：2021-06-24

申请号：US17193449

申请日：2021-03-05

Applicant: OKINS ELECTRONICS CO., LTD

Inventor： Jin Kook JUN ,  Sang Hoon CHA ,  Chang Mo JEONG

IPC: G01R1/067

Abstract: A three-layer micro electro mechanical system (MEMS) spring pin includes a lower-layer spring pin in which a lower-layer wave is disposed between and connected to a lower-layer top plunger and a lower-layer bottom plunger, an upper-layer spring pin in which an upper-layer wave is disposed between and connected to an upper-layer top plunger and an upper-layer bottom plunger, a middle-layer top tip interposed between the upper-layer top plunger and the lower-layer top plunger, and a middle-layer bottom tip interposed between the upper-layer bottom plunger and the lower-layer bottom plunger. According to the above-described structure, effects are expected in which bending is prevented, a stroke is stabilized due to the multi-layer spring, and contact characteristics are enhanced due to the multi-layer plunger.