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.

公开(公告)号：US11567454B2

公开(公告)日：2023-01-31

申请号：US16724274

申请日：2019-12-21

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Yasuo Kitajima ,  Kenji Shimoda ,  Shinnosuke Sakata ,  Daisuke Tokunaga

IPC: H01L31/048 ,  H01L31/18 ,  G04C3/14 ,  H02N1/08 ,  H02K7/116 ,  G04C10/00 ,  G04B25/00

Abstract: Provided is an electromechanical transducer to be detachably attached to an electronic device, the transducer including: first and second plates; a rotor rotating around a rotating shaft supported by the plates; a fixed substrate disposed between the plates and facing the rotor; a charged portion having sub-regions disposed on the rotor at intervals in a rotating direction thereof so as to face the fixed substrate; an opposing electrode disposed on the fixed substrate so as to face the rotor; an adjusting unit for adjusting sliding properties of the rotating shaft, the adjusting unit being provided for at least one of the plates; and a gear train coupled to the rotating shaft. The gear train transmits motive power generated by the rotor rotated by electric power of the electronic device to the electronic device or transmits motive power generated by a change in orientation of the electronic device to the rotor.

公开(公告)号：US20200209809A1

公开(公告)日：2020-07-02

申请号：US16724274

申请日：2019-12-21

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Yasuo Kitajima ,  Kenji Shimoda ,  Shinnosuke Sakata ,  Daisuke Tokunaga

IPC: G04C3/14 ,  G04C10/00 ,  H02K7/116 ,  H02N1/08

Abstract: Provided is an electromechanical transducer to be detachably attached to an electronic device, the transducer including: first and second plates; a rotor rotating around a rotating shaft supported by the plates; a fixed substrate disposed between the plates and facing the rotor; a charged portion having sub-regions disposed on the rotor at intervals in a rotating direction thereof so as to face the fixed substrate; an opposing electrode disposed on the fixed substrate so as to face the rotor; an adjusting unit for adjusting sliding properties of the rotating shaft, the adjusting unit being provided for at least one of the plates; and a gear train coupled to the rotating shaft. The gear train transmits motive power generated by the rotor rotated by electric power of the electronic device to the electronic device or transmits motive power generated by a change in orientation of the electronic device to the rotor.