JP2000314778A - Electronic time piece with calendar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow individual corrections for a first date dial and a second date dial, and make rotational directions of the first and second date dials consistent to enhance an appearance, in an electronic time piece with a calendar divided into the first date dial and the second date dial. SOLUTION: Teeth 24b of the first date dial 24 are forwarded one pitch by one pitch by pawl parts 31a of a correction lever 31 constituted to rotate in one direction a winding stem 35 of an external operation member to convert dextrorotatory movement of a correction wheel 30 interlocking with the winding stem 35 into a linear movement, and a date for one day is corrected finally by forwarding a stroke D corresponding to two pitches. Teeth 34 of the second date dial are forwarded one pitch by one pitch by pawl parts 31b of the correction lever 31 constituted to rotate the winding stem 35 of the external operation member in the other direction to convert counterclockwise rotational movement of the correction wheel 30 into a linear movement, and a date for a ten-day unit is corrected finally by forwarding a stroke E corresponding to two pitches.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic timepiece with a calendar.

[0002]

2. Description of the Related Art A general electronic timepiece in which a date plate is corrected using a correction lever will be described. FIG. 4 is a plan view of a general calendar electronic timepiece using a date plate, as viewed from the dial side. A continuous number 1a from 1 to 31 corresponding to 31 days is printed on the date plate 1, and the same number of days of 31 teeth 1b formed as the number of days are attached to the back plate placed on the main plate 2. The guide wheel 3 is mounted on the main plate 2 so as to be guided by the outer peripheral portion 3a and concentric with the center of the clock which is the center of rotation of the pointer wheel 4.

On the main plate 2, in addition to the date plate 1, a jump control lever 5 is provided.
The date wheel 6, the correction wheel 7, and the correction lever 8 are placed, and are held by a date plate pusher 10 fixed with screws 9a, 9b, and 9c.

[0004] The date switching operation is performed by a stroke A corresponding to one pitch of the teeth 1b of the date plate 1 being sent by a pawl 6a of a date wheel 6 that is decelerated from the pointer wheel 4 and interlocked. Switch. The jump control lever 5 is engaged with the teeth 1b of the date plate 1, and regulates the position of the date plate 1 in the rotation direction while pressing the date plate 1 outward with a force. During the day shift,
The teeth 1b of the date plate 1 are rotated and fed while pressing the jump control lever 5 inward.

[0005] As is well known, the date plate rotates once every 31 days, so it is necessary to correct the date when the month is small. The date can be corrected by rotating the winding stem 11 as an external operation member in one direction, and converting the rotational movement of the correcting wheel 7 interlocked with the winding stem 11 into a linear motion by the claw portion 8a of the correction lever 8 so that the date plate 1 is adjusted.
The stroke A corresponding to one pitch of the tooth 1b is sent to correct the date.

The above is the basic configuration of an electronic timepiece that displays a date using a general date plate. In the conventional configuration, even if the date plate size is almost equal to the outer diameter of the watch, the number is 31 days. There is a drawback in that the size of the numbers is reduced because they are printed, making it difficult to see the date. Especially in the case of women, the size of the watch is reduced, and the size of the numbers is proportionally reduced. The two-digit number is 1
It is much harder to see because it is even smaller than the digits.

On the other hand, in recent years, in order to increase the size of numbers, as shown in FIG. 5, digits of 1 and 10 are divided into a first date plate and a second date plate, and both numerals are displayed. As a result, more and more types of clocks display one date. Two sets of ten consecutive numbers from 0 to 9 are printed on the first date plate 12 displaying the digit of one, and consecutive numbers from 0 to 3 are printed on the second date plate 13 displaying the ten digits. Two sets of four numbers are printed. As a form of display,
The numbers of the first date plate and the second date plate are displayed side by side on a window frame 14 provided on a dial (not shown).

FIG. 6 is a plan view showing the structure of the timepiece with calendar shown in FIG. The first date plate 12 is printed with two sets of ten characters of consecutive numbers 12a from 0 to 9, which are the first digit, and the same number of characters as 20 teeth 1
2b is an outer peripheral portion 16a of the back plate 16 placed on the main plate 15.
And is placed on the main plate 15 so as to be concentric with the center of the clock, which is the center of rotation of the pointer wheel 17. Since the first date plate 12 has 20 teeth, the tooth pitch is longer than that of a general date plate having 31 teeth.

On the main plate 15, in addition to the first date plate, a first day plate jump control lever 18, a date wheel 19, a correction wheel 20, a correction lever 21, and an intermediate wheel 22 are mounted. (Not shown), and is held by a date stamper (not shown) fixed by screws.

On the second date plate (not shown in FIG. 6), two sets of four consecutive numbers from 0 to 3, which are ten digits, are printed, and the same number of characters for eight teeth are printed. The teeth 13a are formed. The teeth 13a of the second date plate 12
And is rotatably mounted on the pointer wheel 17 and held by a stop seat (not shown).

Next, the switching operation of the date will be described. The date wheel 19, which is decelerated and interlocked with the pointer wheel 17, makes one rotation per day, and its claw 19a causes the teeth 12 of the first date plate 12 to rotate.
A stroke B corresponding to one pitch of b is sent, and the date is switched. Only when the first digit is between 1 and 9, only the first date plate 12 is operated, and every tenth day, the second date plate is rotated in conjunction with the intermediate wheel 22 which is rotated by the projection 12c of the first date plate 12. The tooth 13a is sent a stroke C for one pitch, and the date of ten digits is switched together.

The first day plate jump control lever 18 is connected to the first day plate 12
, And regulates the position of the first date plate 12 in the rotation direction while pressing the first date plate 12 outward with a force. In the jump control lever 18 for the first date plate, the meshing portion 18a is also long because the pitch of the teeth 12b of the first date plate 12 is long. The second date plate jump control lever (not shown) is also engaged with the second date plate teeth 13a, and regulates the position of the second date plate in the rotation direction while pressing inward with a force. ing.

The first date plate 12 makes one rotation every 20 days, the second date plate makes one rotation every 80 days, and the date display has a 40-day period. For this reason, the date display is a continuous display consisting of a combination of the continuous numeral 12a of the first date plate 12 and the continuous numeral (not shown) of the second date plate,
Dates that cannot actually be displayed are displayed not only from the 31st to the 31st but also from the 32nd to the 00th, so it is necessary to correct the date every month. A stroke B corresponding to one pitch of the teeth 12b of the first date plate 12 is sent by the claw portion 21a of the correction lever 21 that has converted the rotational movement of the correction wheel 20 linked to the winding stem 23 into a linear movement by rotating the correction wheel 20. The date is modified.

[0014]

The above is the basic structure of the timepiece which displays the date by separating the first digit and the tenth digit from each other.
In the case of date correction of a clock of this type, it is necessary to correct the date every month. For example, if the intention to set the date to be set is too strong, the date display is a 40-day cycle, so the date must be corrected again for 40 days, and the handling is poor. Further, in the date switching operation, the stroke B corresponding to one pitch of the teeth of the first date plate is sent by the pawl of the date wheel that is decelerated and linked with the pointer wheel,
The date changes. Only when the first digit is between 1 and 9, only the first date plate is activated, and every tenth day, the teeth of the second date plate are shifted by one pitch in conjunction with the intermediate wheel rotated by the projection of the first date plate. In this structure, a minute stroke C is sent, and a 10-digit date is switched together. For this reason, the rotation directions of the first date plate and the second date plate were reversed, and the switching operation was unnatural.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic timepiece with a calendar that solves the above-mentioned disadvantages, does not deteriorate the handleability by correcting the date, and does not make the appearance of the switching operation strange. That is.

[0016]

In order to achieve the above object, according to the present invention, there is provided a pointer driving wheel train for driving a pointer, and a date wheel driven by the pointer driving wheel train. A first date wheel that is driven by the date wheel and displays the first digit of the date; an intermediate wheel driven by a feed claw provided on the first date plate; An electronic timepiece with a calendar, comprising: a second date plate that is driven and displays a tenth digit of a date; and a correction mechanism that corrects the display of the first date plate and the second date plate. Is characterized in that the first date plate and the second date plate are individually corrected, and the invention according to claim 2 is characterized in that the first date plate and the second date plate corrected by a correction mechanism are rotated by their rotation. The direction is the same direction, and the invention according to claim 3 is characterized in that the correction mechanism is a crown. The lever member rotates only one of the first date plate and the second date plate by rotating the crown in one direction, and rotates the crown in the other direction. In this case, only the other date plate is corrected, and the invention according to claim 4 is characterized in that the correction lever is configured to hold the tooth portion of the first date plate meshing with the date wheel from the upper surface. The movable range is regulated by d.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of an electronic timepiece with a calendar according to an embodiment of the present invention as viewed from the dial side. FIG. 2 is a plan view of a main part of an electronic timepiece with a calendar showing an embodiment of the present invention. The display form of the calendar is the same as that of FIG.

On the first date plate 24, two sets of ten consecutive numbers 24a from 0 to 9, which are the one digit, are printed, and the number of characters is doubled to form 40 teeth. The teeth 24 b are formed on the outer peripheral portion 26 of the back plate 26 placed on the main plate 25.
a and is placed on the main plate 25 so as to be concentric with the center of the clock which is the center of rotation of the pointer wheel 27 which is the clock driving means.

On the main plate 25, in addition to the first date plate 24,
Date plate jump control lever 28 and date wheel 2 which is a date feed means
9, the correction wheel 30, the correction lever 31, and the intermediate wheels 32, 3
2 is mounted and held by a date plate presser 36 fixed by screws as shown in FIG.

On the second date plate, two sets of four consecutive numbers from 0 to 3, which are ten digits, are printed, and the teeth 34 for 16 teeth, which is twice the number of characters, are formed. ing. The teeth 34 of the second date plate are the protrusions 24c of the first date plate 24,
It meshes with the intermediate wheels 32 and 33 rotated by 24d, is rotatably mounted on the pointer wheel 27, and is fixed by a stop seat (not shown).

Next, the switching operation of the date will be described. The date wheel 29, which is decelerated and linked with the pointer wheel 27, rotates once a day, and its pawl 29a causes the teeth 24 of the first date plate 24 to rotate.
b is sent one pitch at a time, and finally a stroke D corresponding to two pitches is sent to switch the date. Only when the first digit is between 1 and 9, only the first date plate 24 is activated, and every tenth day, in conjunction with the intermediate wheels 32, 33 rotated by the projections 24c, 24d of the first date plate 24, 2nd day teeth 34
The stroke E for the pitch is sent, and the ten-digit date is rotated together in the same direction and switched.

The first date plate jump control lever 28 is connected to the first date plate 24.
, And regulates the position of the first date plate 24 in the rotation direction while pressing the first date plate 24 outward with a force. Similarly, the second day plate teeth 34
A date plate jump control lever (not shown) is engaged to regulate the position of the second date plate in the rotation direction while pressing inward with a force.

Next, the operation of correcting the date will be described. In the case of the first date plate 24, the claw portion 31a of the correction lever 31 that converts the clockwise rotation of the correction wheel 30 interlocked with the winding stem 35 into a linear motion by rotating the winding stem 35, which is an external operation member, in one direction, By feeding the teeth 24b of the first date plate 24 one pitch at a time and finally sending a stroke D corresponding to two pitches, the date for one day is corrected. In the case of the second day board,
The winding stem 35, which is an external operation member, is rotated in the other direction to rotate the winding stem 3
The teeth 34 of the second date plate are fed one pitch at a time by the claw portion 31b of the correction lever 31 that converts the left rotation movement of the correction wheel 30 linked to 5 into a linear movement, and finally a stroke corresponding to two pitches. Sending E modifies the date in units of 10 days. That is, since both the first date plate 24 and the second date plate rotate in the same direction, the appearance of the date change is good.

When correcting the date of the first date plate 24 and the second date plate, the correction lever 31 determines the movable range of the date correction along the end surface 36a of the date plate pressing member 36.

Further, another embodiment of the present invention using another correction mechanism will be described in detail with reference to the drawings. FIG. 3 is a plan view of a main part of an electronic timepiece with a calendar showing an embodiment of the present invention. The embodiment other than the correction mechanism is the same as that of FIG.

On the main plate 25, in addition to the first date plate 24,
Date plate jump control lever 28 and date wheel 2 which is a date feed means
9 and the correction wheel 30 and the correction operation wheel 37 and the intermediate wheel 32,
33 is placed and held by a date plate presser 36 fixed by screws (not shown).

In the case of the first date plate 24, the date is corrected by rotating the winding stem 35, which is an external operation member, in one direction, and the correction wheel 30 linked to the winding stem 35 is rotated by the clockwise direction of the correction wheel 30. The first date plate 2 is operated by the correct operation wheel 37 which operates and interlocks.
The fourth tooth 24b is fed one pitch at a time, and finally a stroke D corresponding to two pitches is sent, whereby the date for one day is corrected. In the case of the second date plate, the correction wheel 30 which rotates the winding stem 35 as an external operation member in the other direction and is interlocked with the winding stem 35 is operated by the counterclockwise rotation direction of the correction wheel 30 to operate the correction wheel. 37, the teeth 34 of the second date plate
By sending a pitch E, and finally sending a stroke E corresponding to two pitches, the date in units of 10 days is corrected. That is, since both the first date plate 24 and the second date plate rotate in the same direction, the appearance of the date change is good as in the above-described embodiment.

As described above, the modified operation wheel 37 is connected to the first date plate 24.
In order to correct the date of the second date plate, the so-called reversing structure is adopted, in which the second date plate is moved along the deformed hole 36b of the date plate pressing member 36 and meshes with one of the date plates.

[0029]

As described above, according to the present invention, the first date plate for displaying the digit of 1 and the second date plate for displaying the digit of 10 can be individually corrected, and the date to be adjusted can be adjusted. Even if the intention to match is too strong, you can quickly set the date you want to match. Also, the first
It is possible to realize the rotation direction of the date plate and the second date plate to be the same, and to improve the appearance during the date switching operation.

[Brief description of the drawings]

FIG. 1 is a plan view of an electronic timepiece with a calendar according to an embodiment of the present invention as viewed from the dial side.

FIG. 2 is a plan view of a main part of the electronic timepiece with a calendar showing the embodiment of the present invention.

FIG. 3 is a plan view of a main part of the electronic timepiece with a calendar showing the embodiment of the present invention.

FIG. 4 is a plan view of a conventional electronic timepiece with a calendar viewed from a dial.

FIG. 5 is an external view of a conventional electronic timepiece with a calendar as viewed from a dial.

FIG. 6 is a plan view of a conventional electronic timepiece with a calendar viewed from a dial.

[Explanation of symbols]

 24 1st date plate 24c Feeding claw 24d Feeding claw 29 Day wheel 31 Correction lever 32 Intermediate wheel 33 Intermediate wheel 34 Second date plate teeth 36 Date plate pressing

Claims (4)

[Claims] 1. A hand wheel driving wheel train for driving hands, a date wheel driven by the hand wheel train, a first date driven by the day wheel and displaying one digit of a date A plate, an intermediate wheel driven by a feed claw provided on the first date plate,
An electronic timepiece with a calendar having a second date plate driven by the intermediate wheel and displaying a tenth digit of a date, and a correction mechanism for correcting the display of the first date plate and the second date plate. An electronic timepiece with a calendar, wherein the correction mechanism corrects the first date plate and the second date plate independently. 2. The electronic timepiece with a calendar according to claim 1, wherein the first date plate and the second date plate corrected by the correction mechanism have the same rotation direction. 3. The correction mechanism has a lever member that is actuated by a crown, and the lever member corrects only one of the first date plate and the second date plate by rotating the crown in one direction. The electronic timepiece with a calendar according to claim 2, wherein only the other date plate is corrected by rotating the crown in the other direction. 4. The movable range of the correction lever is regulated by a date plate presser which holds a tooth portion of a first date plate meshing with the date wheel from an upper surface. Electronic clock with calendar as described.