JP2000292557A - Electronic clock with calendar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the extension of a time zone to be loaded in a day change when putting the clock forward by setting the number of teeth of the teeth part of a first day plate for indicating the first decimal plate of a date larger than the total number of the first decimal plates to be displayed, and by putting the teeth part forward by a plurality of teeth for updating one day. SOLUTION: In an electronic clock with a calendar for separating the first and second decimal places in a date for displaying, for example, two sets of ten characters of a successive number 25a from 0 to 9 are printed, and a first day plate 25 with forty teeth 25b or the like being larger than the total number of the characters is provided. Then, in date change operation, the teeth 25b are put forward each one pitch by a nib 31a of a date-turning wheel 31 being decelerated and interlocked from a hand wheel 29, and, finally, are put forward by a stroke D corresponding to two pitches for changing the date, thus eliminating the need for lengthening the engagement part of a restriction lever for controlling the rotary position of the day plate since the number of teeth of the day plate is set to 40 that is close to 31 of the clock where a date figure is not separated, and making a time zone to be loaded in a day change while putting forward the date equivalent to that of a clock where the date figure is not separated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic timepiece with a calendar.

[0002]

2. Description of the Related Art An electronic timepiece for displaying a date using a general date plate will be described. FIG. 2 is a plan view of a general calendar type electronic timepiece using a date plate as viewed from the dial side.
A continuous number 2a from 1 to 31 corresponding to 31 days is printed on the date plate 2, and the number of teeth 2b formed for 31 teeth equal to the number of days is printed on the back plate 1 placed on the main plate 1. The guide wheel 4 is guided by the outer peripheral portion 4 a and is placed on the main plate 1 concentrically with the center of the clock, which is the center of rotation of the hand wheel 3.

On the main plate 1, in addition to the date plate 2, a jump control lever 9 is provided.
The date wheel 5, the correction wheel 7, and the correction lever 8 are placed, and are held by a date plate retainer 10, which is fixed by screws 11a, 11b, and 11c.

[0004] The date switching operation is performed by the claw 5 a of the date wheel 5, which is decelerated from the pointer wheel 3 and interlocked with the date dial 2.
The stroke A corresponding to one pitch of the tooth 2b is sent to switch the date. The jump control lever 9 is engaged with the teeth 2b of the date plate 2, and regulates the position of the date plate 2 in the rotation direction while pressing the date plate 2 outward. During the day feeding, the teeth 2b of the date plate 2 are rotated and pushed while pressing the jump control lever 9 inward. As is well known, the date plate rotates once every 31 days, so that it is necessary to correct the date when the month is small. The correction of the date is equivalent to one pitch of the teeth 2b of the date plate 2 by the claw 8a of the correction lever 8 that converts the rotational movement of the correction wheel 7 linked to the winding stem 6 as an external operation member into a linear movement. Stroke A is sent to correct the date.

The basic structure of an electronic timepiece that displays a date using a general date plate has been described above. Even if the date plate size is almost equal to the outer diameter of the timepiece, numerals are printed for 31 days. This has the disadvantage that the size of the numbers is reduced, 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. Also, a two-digit number is smaller than a one-digit number, making it more difficult to see.

On the other hand, in recent years, in order to increase the size of numbers, as shown in FIG. 3, digits of 1 and 10 are divided into a first date plate and a second date plate, and both numerals are displayed. By 1
Clocks that display one date are increasing. Two sets of ten consecutive numbers from 0 to 9 are printed on the first date plate 12 displaying the 1 digit, and 1 to 3 consecutive numbers are printed on the second date plate 13 displaying the 10 digit. Two sets of three numbers are printed, and two non-printing portions are provided corresponding to the display of the period from 1 to 9 which does not require 10 digits. As a display mode, the numbers of the first date plate and the second date plate are displayed side by side on a window frame 22 provided on a dial (not shown).

FIG. 4 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 15a of the back plate 15 placed on the main plate 14.
And is mounted on the main plate 14 concentrically with the center of the clock, which is the center of rotation of the pointer wheel 16. 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 14, in addition to the first date plate 12,
Date plate jump control lever 17, date wheel 18 and modified wheel 19
The correction lever 20 and the date intermediate wheel 21 are placed, and are held by a date plate holder (not shown) fixed by screws (not shown).

On the second date plate (not shown), there are two sets of three consecutive digits of 1 to 3 which are 10 digits, from 1 to 9 which do not require 10 digits. Is the same as the number of the two non-printed parts corresponding to the display of
The teeth 13a for the teeth are formed. The teeth 13a of the second date plate (not shown) mesh with the date intermediate wheel 21 rotated by the projections 12c of the first date plate 12, are rotatably mounted on the indicator wheel 16, and have a stop seat (see FIG. (Not shown).

The switching operation of the date is performed by the claw 18a of the date wheel 18 which is decelerated from the pointer wheel 16 and linked therewith.
A stroke B corresponding to one pitch of the teeth 12b of the first date plate 12 is sent, and the date is switched. Between 1 and 9, only the first date plate is activated, and every tenth day, the teeth 13a of the second date plate are set to 1 in conjunction with the date intermediate wheel 21 rotated by the projection 12c of the first date plate 12. The stroke C for the pitch is sent, and the ten-digit date is switched together.

The first date plate jump control lever 17 is connected to the first date plate 12
And regulates the position of the first date plate 12 in the rotational direction while pressing the first date plate 12 outward with a force. In the first day plate jump control lever 17, the meshing portion 17a is also long because the pitch of the teeth 12b of the first day plate 12 is long. A second day plate jump control lever (not shown) is also engaged with the second day plate teeth 13a, and the second day plate (not shown) is pressed while being pressed inward.
Is regulated in the rotation direction.

The first date plate 12 rotates once every 20 days, and the second date plate (not shown) rotates once every 80 days, and the date display has a 40 days period. . For this reason,
The date needs to be corrected every month, and the date is corrected by the claw portion 20a of the correction lever 20 that converts the rotational motion of the correction wheel 19 linked to the winding stem 23, which is an external operation member, into a linear motion. The stroke B for one pitch of the twelve teeth 12b is sent to correct the date.

[0013]

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.
The number of teeth on the first date plate is 2 compared to the number of teeth on a general date plate of 31.
Since there are as few as 0 teeth, the stroke for one pitch of the teeth is long. For this reason, the shape of the meshing portion of the jump control lever for regulating the rotation position of the date plate becomes longer, and the time period during which the load on the watch during the date feeding is applied becomes longer,
The watch could stop or break down. Also, in the date correction, the stroke of one pitch of the teeth becomes longer and the stroke of the correction lever is required more. Therefore, the outer diameter of the correction wheel which determines the stroke of the correction lever must be increased. Therefore, it is necessary to newly design a transmission mechanism from the winding stem, which is an external operation member.
For this reason, it has been difficult to divert an existing clock with a calendar as it is.

The present invention solves the above-mentioned problems of the prior art, does not extend the time period of the load applied to the timepiece during the day feeding, and further reduces the time from the timepiece with the calendar using a general dateplate. It is an object of the present invention to provide an electronic timepiece with a calendar that can be easily diverted.

[0015]

In order to achieve the above object, the present invention according to claim 1 of the present invention comprises a clock driving means for driving a hand, and a first date plate for displaying one digit of a date. A second date plate for displaying the ten digits of the date, and a date feeding means for driving at least a toothed portion provided on the first date plate using a driving force from the clock driving means; 1
In an electronic timepiece with a calendar for displaying a date by displaying at least a part of a date plate and a second date plate in parallel, the tooth profile portion of the first date plate has more teeth than the total number of one digit to be displayed. 3. The present invention according to claim 2, wherein the date feeding means has a number, and the date feeding means feeds the tooth profile portion of the first date plate by a plurality of teeth, thereby performing date feeding for updating the date by one day. The first date plate is formed with two sets of consecutive dates from 0 to 9 and the number of teeth of the tooth profile is 40, and the date feeding means feeds two teeth of the tooth profile. , The date is updated for one day.

[0016]

Embodiments of the present invention will be described below 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. The display form of the calendar is the same as that of FIG.

The first date plate 25 is printed with two sets of ten consecutive numbers 25a from 0 to 9, which are one digit, and forms 40 teeth, which is twice the number of 20 characters. The set teeth 25b are guided by the outer peripheral portion 28a of the back plate 28 placed on the main plate 27, and
9 is mounted on the main plate 27 concentrically with the center of the clock which is the center of rotation. That is, the number of teeth 25b is larger than the total number of characters.

On the main plate 27, in addition to the first date plate 25, a first
Date plate jump control lever 30 and date wheel 3 which is a date feeding means
1 and the correction wheel 32 and the correction lever 33 and the Japan-China wheel 3
4 and 35 are placed and held by a date plate holder (not shown) fixed by screws (not shown).

On the second date plate (not shown), two sets of three consecutive digits of 1 to 3 which are 10 digits and 1
Sixteen teeth 26 are formed, which are double the number of the two non-printed parts, corresponding to the display from 1st to 9th, which does not require a zero digit. . The teeth 26 of the second date plate (not shown) are
The wheel is engaged with the date intermediate wheels 34 and 35 rotated by 25d, is rotatably mounted on the pointer wheel 29, and is fixed by a stop seat (not shown).

The switching operation of the date is performed by the claw 31a of the date wheel 31 which is decelerated and linked with the pointer wheel 29.
The teeth 25b of the first date plate 25 are fed one pitch at a time, and a stroke D corresponding to two pitches is finally sent to switch the date. Between 1 and 9, only the first date plate 25 operates,
Every tenth day, the teeth 26 of the second date plate are fed by a stroke E of two pitches in conjunction with the date intermediate wheels 34, 35 rotated by the projections 25c, 25d of the first date plate, and a digit of ten digits Are switched together.

The first date plate jump control lever 30 is connected to the first date plate 25.
, And regulates the position of the first date plate 25 in the rotation direction while pressing the first date plate 25 outward with a force. Similarly, the teeth 26 of the second date plate
A jumping lever for a date plate (not shown) is engaged to regulate the position of the second date plate (not shown) in the rotational direction while pressing inward with a force.

The date can be corrected by the external operation member, Makinzuma 2
The first date plate 25 is moved by the claw 33a of the correction lever 33, which converts the rotational movement of the correction wheel 32 linked to the rotation 4 into a linear movement.
The teeth 25b are moved one pitch at a time, and finally a stroke D corresponding to two pitches is sent, whereby the date for one day is corrected.

[0023]

As described above, according to the present invention, the number of teeth of the date plate is set to 40 teeth, which is as close as possible to the number of teeth of the general date plate, 31 teeth, and the stroke of one pitch of the teeth is substantially reduced. Since the date is switched by feeding the teeth by two pitches in the same manner, it is not necessary to lengthen the engagement portion of the jump control lever that regulates the rotation position of the date plate. Can be set to the same level as a general calendar clock. Also, in the date correction, since the stroke of the correction lever does not need to be large, there is no need to increase the outer diameter of the correction wheel that determines the stroke of the correction lever,
Since there is no need to newly design the transmission mechanism from the winding stem,
It is possible to obtain an effect that it is easy to divert an existing clock with a calendar as it is.

[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 conventional electronic timepiece with a calendar as viewed from the dial side.

FIG. 3 is an external view of a conventional electronic timepiece with a calendar as viewed from the dial side.

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

[Explanation of symbols]

 25 1st date plate 25b 1st date plate teeth 26 2nd date plate teeth 29 Pointer wheel 31 Day wheel

Claims (2)

[Claims] 1. A clock driving means for driving a hand, a first date plate for displaying one digit of a date, a second date plate for displaying ten digits of a date, and a driving force from the clock driving means. A date feeding means for driving at least a toothed portion provided on the first date plate using a calendar, and a calendar for displaying a date by displaying at least a part of the first date plate and the second date plate in parallel. In the electronic timepiece, the tooth portion of the first date plate has a greater number of teeth than the total number of one digit to be displayed, and the date feeding means feeds the tooth portion of the first date plate by a plurality of teeth. An electronic timepiece with a calendar, characterized in that the date is updated by one day for the date. 2. The first date plate is formed with two sets of consecutive dates from 0 to 9 and has 40 teeth formed in the tooth profile, and the date feeding means changes the teeth of the tooth profile. 2. The electronic timepiece with a calendar according to claim 1, wherein the date is updated by one day by feeding two teeth.