Calendar timepiece having two date indicators having been eccentrically disposed

Abstract

To provide a timepiece with a calendar mechanism in which a component working is easy and a movement is thin. A movement of a timepiece with a calendar mechanism possesses a 1st date indicator displaying a place of one out of a date, and a 2nd date indicator displaying a place of ten out of the date. A program gear wheel is constituted so as to be capable of intermittently rotating respectively the 1st date indicator and the 2nd date indicator on the basis of an operation of a drive mechanism. In the invention, by using a ring-like program gear wheel, it is possible to rotate the 1st date indicator and the 2nd date indicator. A rotation center axis of the 2nd date indicator is located in an outside of the 1st date indicator, and located in an inside of the program gear wheel. An information relating to a day is displayed by a 1st day letter of the 1st date indicator and a 2nd day letter of the 2nd date indicator.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

A preferred form of the present invention is illustrated in the accompanying drawings in which:

FIG. 1 is a schematic plan view showing a 1st date indicator, a 2nd date indicator and the like when a movement has been seen from a dial side in an embodiment of the invention;

FIG. 2 is a schematic plan view showing a program gear wheel and a correction mechanism when the movement has been seen from the dial side in the embodiment of the invention;

FIG. 3 is an enlarged partial plan view showing portions of the 1st date indicator, the 2nd date indicator and the program gear wheel under a state displaying “29th day” in the embodiment of the invention;

FIG. 4 is a partial sectional view showing portions of the 1st date indicator, the program gear wheel and a calendar intermediate wheel in the embodiment of the invention;

FIG. 5 is a partial sectional view showing portions of the 2nd date indicator and the program gear wheel in the embodiment of the invention;

FIG. 6 is a partial sectional view showing portions of the program gear wheel and a second wheel in the embodiment of the invention;

FIG. 7 is a block diagram showing a portion of a calendar mechanism in the embodiment of the invention;

FIG. 8 is an enlarged partial plan view showing portions of the 1st date indicator, the 2nd date indicator and the program gear wheel under a state displaying “30th day” in the embodiment of the invention;

FIG. 9 is an enlarged partial plan view showing portions of the 1st date indicator, the 2nd date indicator and the program gear wheel under a state displaying “31st day” in the embodiment of the invention;

FIG. 10 is an enlarged partial plan view showing portions of the 1st date indicator, the 2nd date indicator and the program gear wheel under a state displaying “01 day” in the embodiment of the invention;

FIG. 11 is a plan view showing a complete under a state displaying “31st day” by a constitution, in which a date window has been disposed in a 12 o'clock direction of a dial, in the embodiment of the invention; and

FIG. 12 is a schematic plan view showing a structure when the movement has been seen from a case back side in the embodiment of the invention.

Claims

1. A timepiece with a calendar mechanism including two date indicators, comprising: a drive mechanism for driving the timepiece with the calendar mechanism;a time instant display wheel which rotates by an operation of the drive mechanism and thereby displays a time instant information;a 1st date indicator displaying a place of one out of a date;a 2nd date indicator displaying a place of ten out of the date; anda program gear wheel having been constituted so as to be capable of intermittently rotating respectively the 1st date indicator and the 2nd date indicator on the basis of the operation of the drive mechanism;wherein a rotation center axis of the 2nd date indicator is located in an outside of the 1st date indicator and located in an inside of the program gear wheel, andan information relating to a day can be displayed by one among 1st day letters having been provided in the 1st date indicator and one among second day letters having been provided in the 2nd date indicator, which have been positioned while mutually adjoining.

2. A timepiece with a calendar mechanism according to claim 1; wherein the program gearwheel is constituted in a ring shape having a center hole, and a rotation center axis of the time instant display wheel is disposed in an inner part of the center hole of the program gearwheel.

3. A timepiece with a calendar mechanism according to claim 1; wherein the program gear wheel is constituted in a ring shape having a center hole, a program tooth for intermittently rotating the 1st date indicator is provided in an outer periphery part of the program gear wheel, and another program tooth for intermittently rotating the 2nd date indicator is provided in an inner periphery part of the program gearwheel.

4. A timepiece with a calendar mechanism according to claim 1; wherein the program gear wheel has 31 driving program teeth for receiving the operation of the drive mechanism, the program gear wheel has 30 tooth parts for rotating the 1st date indicator, the program gear wheel has four tooth parts for rotating the 2nd date indicator, the 1st date indicator has a 1st day letter display face including ten numerals having been arranged in a circumferential direction in order of “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “0”, and the 2nd date indicator has a 2nd day letter display face including four numerals having been arranged in a circumferential direction in order of “0”, “1”, “2”, “3”.

5. A timepiece with a calendar mechanism according to claim 2 further comprising: a date indicator driving wheel having been constituted so as to rotate on the basis of the operation of the drive mechanism and having been disposed in the inner part of the center hole of the program gear wheel; anda date finger having been constituted so as to rotate on the basis of a rotation of the date indicator driving wheel,wherein the program date indicator is constituted so as to rotate on the basis of a rotation of the date finger.

6. A timepiece with a calendar mechanism according to claim 3 further comprising: a calendar intermediate wheel rotating on the basis of a rotation of the program date indicator;wherein a rotation center axis of the calendar intermediate wheel is located in an outside of the 1st date indicator and located in an outside of the program gear wheel, and the 1st date indicator is constituted so as to rotate on the basis of a rotation of the calendar intermediate wheel.

7. A timepiece with a calendar mechanism according to claim 3 further comprising: a calendar correction mechanism which can, under a state in which a winding stem has been pulled out to a winding stem position capable of performing a calendar correction, correct at least one between a display content of the 1st date indicator and a display content of the 2nd date indicator by rotating the winding stem;wherein the calendar correction mechanism includes a day correction wheel, and is constituted so as to be capable of rotating, under the state in which the winding stem has been pulled out to the winding stem position capable of performing the calendar correction, the program gear wheel by the fact that the day correction wheel rotates on the basis of a rotation of the winding stem.