公开(公告)号：US11650548B2

公开(公告)日：2023-05-16

申请号：US16816242

申请日：2020-03-11

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Kenji Shimoda ,  Yasuo Kitajima ,  Daisuke Tokunaga ,  Shinnosuke Sakata ,  Koki Mine ,  Yuta Furudate ,  Kazutaka Igarashi

IPC: G04C3/10 ,  G04C5/00 ,  H01G7/02

CPC classification number: G04C5/005 ,  G04C3/101 ,  H01G7/025

Abstract: Provided is a watch, including: an exterior case having electroconductivity; an operating member having electroconductivity, which is inserted into the exterior case through an opening formed through the exterior case, and which is configured to accept an operation performed by a user; and an electrostatic motor including: an electret substrate having an electret surface on which electret films being electrically charged are provided; a counter substrate, on which electrodes to be arranged so as to be opposed to the electret films are provided; and a rotary shaft configured to rotate the electret substrate and the counter substrate relative to each other, wherein the operating member and the exterior case are electrically continuous with each other via a conduction path formed so as to avoid overlapping with the electret surface in plan view.