Electronic timepiece and movement

Patent metadata

Field	Value
Publication number	US-9921548-B2
Application number	US-201615267191-A
Country	US
Kind code	B2
Filing date	Sep 16, 2016
Priority date	Mar 6, 2014
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

An electronic timepiece has a display device that displays display information, a drive mechanism that drives the display device, a crown that can perform a rotary operation, and a control device that corrects the display information displayed on the display device by the rotary operation of the crown. The control device has a single correction mode and a continuous correction mode which are selected by the rotary operation of the crown. In the single correction mode, a single correction signal is output to the drive mechanism so that the display device is corrected as much as a single correction quantity. In the continuous correction mode, a continuous correction signal is output to the drive mechanism so that the display device is corrected as much as a continuous correction quantity. The continuous correction quantity is set depending on types of the display information to be corrected in the continuous correction mode.

First claim

What is claimed is:

1. A movement comprising:
a winding stem that is rotatable at least at a zero stage position and a first stage position;
a switch wheel that engages with the winding stem so as to rotate integrally with the winding stem;
an electric switch that comes into contact with the switch wheel in response to the rotation of the switch wheel when the winding stem is located at the first stage position, and that does not come into contact with the switch wheel, even if the switch wheel is rotated when the winding stem is located at the zero stage position;
a setting lever that engages with the winding stem and is moved in response to a movement of the winding stem;
a yoke that engages with the setting lever and is moved in response to a movement of the setting lever; and
a switch lever fixed to the setting lever, wherein:
the electric switch constitutes a switch contact point spring body having a contact portion that engages the switch wheel and is moved by the switch wheel from an original position to an actuation position, and having a switch spring that returns the contact position to the original position, which is different from the actuation position, in response to the contact portion not being engaged with the switch wheel,
the switch wheel is disclosed so as to be movable in an axial direction of the winding stem, and in response to a movement of the yoke, the switch wheel is moved to any of a position in contact with the switch contact point spring body and a position not in contact with the switch contact point spring body,
the switch lever contacts one of multiple electrodes at a corresponding contact position in accordance with movement of the winding stem, each contact position corresponding to a different one of said stage positions of the winding stem, and
the yoke is positioned at one of multiple yoke positions by the setting lever in accordance with the contact position of the switch lever.

2. The movement according to claim 1 , wherein:
position of the yoke is selectively regulated by engaging with the setting lever;
the yoke engages the setting lever by sliding along a protruding portion of the setting lever, the protruding portion being moveable between multiple predefined urging stop-positions, each urging stop-position corresponding to a different one of said stage positions of the winding stem; and
when the yoke is regulated by the setting lever, the yoke is positioned at one of multiple predefined yoke positions in accordance with an urging stop-position to which the protruding portion is moved.

3. An electronic timepiece comprising the movement according to claim 2 .

4. The movement according to claim 2 , wherein:
the yoke is disposed so as to be movable in a first direction that is a direction for causing the switch wheel to move closer to the switch contact point spring body, and in a second direction that is a direction for causing the switch wheel to move away from the switch contact point spring body; and
the protruding portion is disposed at a position where the movement of the yoke is regulated in the first direction and is not regulated in the second direction.

5. The movement according to claim 1 , further comprising:
a setting lever spring that holds the setting lever,
wherein the setting lever spring includes a return spring portion that constitutes the switch spring that returns the contact portion to the original position.

6. The movement according to claim 1 , further comprising:
a switch lever for detecting a position of the winding stem, wherein:
the winding stem is further rotatable to a second stage position in addition to the zero stage position and the first stage position; and
the electric switch comes into contact with the switch wheel in response to rotation of the switch wheel, and to the winding stem being located at the second stage position.

7. An electronic timepiece comprising the movement according to claim 1 .

8. The movement according to claim 1 , wherein the electric switch is a slide switch.

9. The movement according to claim 1 , wherein the electric switch is a biased switch.

10. The movement according to claim 1 , wherein the actuation position is one of a first actuation position, corresponding to movement of the switch wheel in a first rotational direction, and a second actuation position corresponding to movement of the switch wheel in a second rotational direction.

11. The movement according to claim 1 , wherein the switch lever protrudes through an axial direction of the winding stem to contact said one of multiple electrodes.

Assignees

• Seiko Epson Corp

Inventors

• Mitani Toshihiro

Classifications

• G04B3/04

  Rigidly-mounted keys, knobs or crowns {(jointed winding-stem G04B37/06)} · CPC title

• G04G9/0076

  in which the time in another time-zone or in another city can be displayed at will · CPC title

• G04C9/08 Primary

  by electric drive · CPC title

• G04R20/02

  the radio signal being sent by a satellite, e.g. GPS · CPC title

• G04G5/00

  Setting, i.e. correcting or changing, the time-indication (radio-controlled time-pieces G04R) · CPC title