Horology: time measuring systems or devices – With calendar indicator – Setting or resetting
Reexamination Certificate
2000-08-29
2001-09-25
Miska, Vit (Department: 2859)
Horology: time measuring systems or devices
With calendar indicator
Setting or resetting
C368S190000
Reexamination Certificate
active
06295249
ABSTRACT:
SUMMARY OF THE INVENTION
1. Field of the Invention
The present invention relates to a timepiece equipped with a display correction device constituted to be capable of correcting a display content displayed by display members of an hour hand, a minute hand, a date indicator, a day indicator and the like by rotating a winding stem.
Further, the invention relates to a correction device for a timepiece for correcting the display content by rotating the winding stem.
2. Background Information
According to a timepiece equipped with a display correction device, there has been used a rocking yoke provided at a main plate which is rockable to three positions by operating a setting lever. A setting wheel is rotatably provided to a rocking yoke. A calendar correction rocking lever is rockably provided to the rocking yoke. A calendar corrector setting wheel is rotatably provided to the calendar correction rocking lever and is arranged to be capable of slipping by constant slip torque.
When a winding stem exists at the 0-th stage, the rocking yoke is positioned at a first position in the axis line direction of the winding stem, and when the winding stem is rotated, a sliding pinion is rotated and the setting wheel and the calendar corrector setting wheel are rotated based on rotation of the sliding pinion. Under this state, there is no gear rotating based on rotation of the calendar corrector setting wheel.
When the winding stem is drawn to the first stage, the rocking yoke is rotated based on rotation of a setting lever. Then, the rocking yoke is positioned at a second position in the axis line direction of the winding stem. When the winding stem is rotated, the sliding pinion is rotated and the setting wheel and the calendar corrector setting wheel are rotated based on rotation of the sliding pinion. When the winding stem is rotated to the right, the calendar corrector rocking lever is rocked in a first direction, based on rotation of the calendar corrector setting wheel, a day indicator is rotated and day correction is carried out. When the winding stem is rotated to the left, the calendar corrector rocking lever is rocked in a second direction reverse to the first direction and based on the rotation of the calendar corrector setting wheel, a day corrector setting wheel is rotated. Based on rotation of the day corrector setting wheel, the day wheel is rotated and day correction is carried out.
When the winding stem is drawn to the second stage, based on rotation of the setting lever, the rocking yoke is rotated. Then, the rocking yoke is positioned to a second position in the axis line direction of the winding stem. When the winding stem is rotated, the sliding pinion is rotated and based on rotation of the sliding pinion, the setting wheel and the calendar corrector setting wheel are rotated. Under this state, there is no gear rotating based on the rotation of the calendar corrector setting wheel. When the winding stem is rotated, based on rotation of the setting wheel, a minute wheel is rotated. By rotating the minute wheel, a minute driving wheel and an hour wheel are rotated. Therefore, based on the rotation of the winding stem, display of a minute hand attached to the minute driving wheel and an hour hand attached to the hour wheel can be corrected.
According to such a conventional structure, the sliding pinion is constituted to move to three locations of the first position in correspondence with the 0-th stage of the winding stem, the second position in correspondence with the first stage of the winding stem and the third position in correspondence with the second stage of the winding stem. Further, the setting wheel, the calendar correction rocking lever and the calendar corrector setting wheel are attached to the rocking yoke.
However, according to the conventional timepiece equipped with a display correction device, the following problems are posed.
(1) When the winding stem is rotated and display of the date indicator and the day indicator is corrected to thereby correct time, the sliding pinion is moved to the three locations of the positions in the rotational axis line of the winding stem and accordingly, an amount of moving the sliding pinion is large. Therefore, a dimension of a movement of a timepiece with regard to the axis line direction of the winding stem becomes large.
(2) There is used the rocking yoke mounted with a plurality of parts and accordingly, shapes of parts constituting the display correction device are complicated and a large period of time is required in fabrication of the parts and assembly of the timepiece.
Hence, in order to resolve such conventional problems, objects of the invention reside in points described below.
(1) A movement of a timepiece equipped with a display correction device is to be downsized by realizing a display correction device in which an amount of moving a sliding pinion in an axis line direction of a winding stem is small.
(2) A timepiece equipped with a display correction device in which fabrication and assembly are facilitated is to be realized by simplifying shapes of parts constituting the display correction device.
SUMMARY OF THE INVENTION
(1) In order to resolve the above-described problems in the conventional art according to the invention, there is constituted a timepiece equipped with a display correction device capable of correcting a display content by rotation of a winding stem having a first information display member for displaying first information and a second information display member for displaying second information. The first information display member is constituted by, for example, a date display member for displaying date, that is, a date indicator or the like and the second information display member is constituted by, for example, a time display member for displaying time, that is, an hour hand and a minute hand or the like.
Further, the timepiece equipped with a display correction device according to the invention is provided with a winding stem having a rotational axis line for correcting a display content of the first information display member and correcting a display content of the second information display member, a sliding pinion having a rotational axis line the same as the rotational axis line of the winding stem and provided to rotate based on rotation of the winding stem, winding stem positioning means for positioning the winding stem at a first winding stem position in a direction of the rotational axis line, a second winding stem position in the direction of the rotational axis line and a third winding stem position in the direction of the rotational axis line, and sliding pinion positioning means for positioning the sliding pinion at a first sliding pinion position in the direction of the rotational axis line when the winding stem is disposed at the first winding stem position and for positioning the sliding pinion at a second sliding pinion position in the direction of the rotational axis line when the winding stem is disposed at the second winding stem position and the third winding stem position based on movement of the winding stem in the direction of the rotational axis line.
Further, the timepiece equipped with a display correction device according to the invention is provided with a rocking bar having a rotational center on the rotational axis line of the winding stem and provided to rock in a first rotational direction when the winding stem is disposed at the second winding stem position and to rock in a second rotational direction different from the first rotational direction when the winding stem is disposed at the third position, first corrector setting means provided to the rocking bar for correcting the display content of the first information display member based on rotation of the sliding pinion when the winding stem is disposed at the second winding stem position, and second corrector setting means for correcting the display content of the second information display member based on the rotation of the sliding pinion when the winding stem is disposed at the third winding
Takahashi Masaaki
Watanabe Mamoru
Adams & Wilks
Miska Vit
Seiko Instruments Inc.
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