公开(公告)号：US20220057752A1

公开(公告)日：2022-02-24

申请号：US17445304

申请日：2021-08-17

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Shoichiro Morita ,  Riko Tsuboi ,  Daisuke Yamada ,  Hiroyuki Takahashi

IPC: G04B19/02 ,  G04B19/04 ,  G04C10/04

Abstract: A reciprocating display mechanism performing predetermined display by reciprocating a hand within a fixed area includes a hand capable of reciprocating within the fixed area, a hand driving wheel that drives the hand and includes a wheel, a transmission wheel that rotates the hand driving wheel by engaging with a tooth of the wheel, and a biasing member that biases the hand in one direction of the reciprocating, wherein the wheel includes an angle area corresponding to the fixed area and a region adjacent to the angle area, the angle area provided with teeth and a part of the region adjacent to the angle area provided with an idle region in which the transmission wheel idles, and the one direction biasing by the biasing member is a direction in which the tooth adjacent to the idle region engages with the transmission wheel when the idle region faces the transmission wheel.

公开(公告)号：US12204283B2

公开(公告)日：2025-01-21

申请号：US17445304

申请日：2021-08-17

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Shoichiro Morita ,  Riko Tsuboi ,  Daisuke Yamada ,  Hiroyuki Takahashi

IPC: G04B19/02 ,  G04B19/04 ,  G04C10/04

Abstract: A reciprocating display mechanism performing predetermined display by reciprocating a hand within a fixed area includes a hand capable of reciprocating within the fixed area, a hand driving wheel that drives the hand and includes a wheel, a transmission wheel that rotates the hand driving wheel by engaging with a tooth of the wheel, and a biasing member that biases the hand in one direction of the reciprocating, wherein the wheel includes an angle area corresponding to the fixed area and a region adjacent to the angle area, the angle area provided with teeth and a part of the region adjacent to the angle area provided with an idle region in which the transmission wheel idles, and the one direction biasing by the biasing member is a direction in which the tooth adjacent to the idle region engages with the transmission wheel when the idle region faces the transmission wheel.