JP2003149353A - Calendar device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a calendar device that can automate operation, suppress the occurrence of jarring sound, maintain display quality and make the display lager and easy to see. SOLUTION: A drive control means 30 drives a date drive source 12 to advance the date if a light-and-darkness sensor 44 detects a light state at 0:00 a.m. If a dark state is detected, the date is advanced when the light state is detected or at 9:00 a.m. The advance of the date is not thereby performed during sleeping, so that no offense to the ear is given by the sound of date advance. The drive control means 30 detects the origin of a first date disk when changing the date at the end of the month and corrects the display state. The discrepancy of a motor and a gear can thereby be corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calendar device for switching and displaying the date and the day of the week by rotating a disc.

[0002]

2. Description of the Related Art Conventionally, a calendar mechanism of this type has been incorporated in a timepiece movement, and has "1" to "3".
Date disk with numbers up to 1 ”and“ day ”
The day-of-the-week disk provided with days of the week from "Saturday" to "Saturday" was configured to be fed once every 24 hours by rotation of the handwheel drive wheel train of the timepiece.

In addition, since the digital timepiece has no mechanical driving part, a calendar display using a liquid crystal display device is provided. Also, in radio-controlled watches,
When the time is automatically corrected and the calendar is driven with the pointer drive wheel train together with the pointer, it takes a long time to automatically correct,
Since a large load is applied to the pointer driving portion, a calendar display for displaying the date and the day of the week is usually provided using a liquid crystal display device.

[0004]

In the calendar mechanism incorporated in the above-mentioned timepiece movement,
In order to automatically correct the date feed on the last day of the month other than "31", it takes time because the pointer must be rotated by two days, and the circuit configuration becomes complicated. For this reason, normally, the date disk is manually rotated and corrected.

Further, when automating the operation of the conventional calendar mechanism, a motor, a gear or the like is used as a drive source of the calendar mechanism, but a sound is generated when the operation is performed. Normally, the calendar is sent at 0 am when the date changes.
Sometimes done. When day feeding is performed at midnight when the ambient noise is low in this way, even when the noise level generated during driving is the same, it feels larger than during the daytime, and it is often felt as annoying especially at bedtime. . In order to automatically feed the calendar, it was necessary to solve such a driving sound problem.

Further, when the operation of the calendar mechanism is automated, if the drive or meshing of the motor or gear shifts, the numbers may not stop at the display position and the display quality may deteriorate.

Further, in the conventional calendar mechanism,
Since the dates "1" to "31" are provided on one date disc, the display becomes small and it is difficult to see.

Further, in a calendar display using a liquid crystal display device, the display is more difficult to see than the numbers and characters provided on the disc, and it may be extremely difficult to see depending on the viewing angle and the brightness of the surroundings.

The present invention has been made in view of the above-mentioned problems of the prior art, and makes it possible to automate the correction at the end of the month and the initial setting at the time of purchase, suppress the generation of annoying sound, maintain the display quality, and further (EN) A calendar device capable of making a display larger and easier to see.

[0010]

A calendar device according to the present invention comprises a first date disk for displaying the ones digit of a date, a second date disk for displaying the tens digit of a date, and A date driving source for rotationally driving the first date disc and the first date disc by engaging the first date disc and the second date disc when carrying the date display. The second with the rotation of the plate
Of the date disk rotating mechanism, a brightness sensor for detecting the brightness, and if the brightness sensor detects a dark state at the date change time, the date drive source is held in a stopped state to perform date feeding. If the bright / dark sensor detects a bright state at or after the date change time, the date drive source is driven to rotate the first date disc to drive the date. ing. When the dark state continues from the date change time to the set time, the drive control means in this calendar device drives the date drive source at the set time to rotate the first date disc to set the date. It is supposed to be sent. Further, the date change time in this calendar device is 0 AM obtained from the time data included in the clock or the standard radio signal.
It is set at the time.

Also, the calendar device of the present invention includes a first date disk for displaying the ones digit of the date, a second date disk for displaying the tens digit of the date, and the first date circle. When driving the date drive source that rotates the plate and the date display,
A feed mechanism that engages the first date disc and the second date disc to rotate the second date disc as the first date disc rotates; Detecting means provided on one or both of the second date disks to detect the origin, and by driving the date drive source to rotate the first date disk, the date is fed to determine the date at the end of the month. Drive for driving the date drive source to rotate the first date disc at the time of change and detecting the origin by the detecting means to correct the display state of the date by the first and second date discs. And a control means.

Further, the calendar device of the present invention includes a first date disk for displaying the ones digit of the date, a second date disk for displaying the tens digit of the date, and the first date circle. When driving the date drive source that rotates the plate and the date display,
A feed mechanism that engages the first date disc and the second date disc to rotate the second date disc as the first date disc rotates, and detects the brightness. A light / dark sensor, detection means for detecting an origin provided on one or both of the first and second date disks, and the date drive when the light / dark sensor detects a dark state at a date change time. When the date and time sensor detects a bright state at or after the date change time without keeping the source in a stopped state and sending the date, the date drive source is driven to rotate the first date disk to set the date. When the date is changed at the end of the month, the date driving source is driven to rotate the first date disc, and the detection unit detects the origin to set the date by the first and second date discs. Drive control means for correcting the display state of It has.

In the calendar device, the feeding mechanism includes a cam portion provided in a range corresponding to one date feeding of the first date disc, and the first date disc at the display position. When the display shifts from "9" to "0", the second date disc is engaged by contacting the cam portion, and the second date disc is rotated by the first date disc. And an engaging portion that rotates in accordance with. Further, the calendar device has a day-of-the-week disc for displaying the day of the week, and a day-of-week drive source for rotationally driving the day-of-the-week disc. It is supposed to be corrected with sending.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In the calendar device of the present invention, as a date disc for displaying a date, a first date disc for displaying a digit (“0” to “9”) of the first digit of the date is used. ,
A second date disk displaying the tens digit of the date (“1” to “3” and the blank space 2 by setting the interval for forming the number to be the same as the first date disk). I am using. In this way, by providing the ones digit and the tens digit of the date on different date discs respectively, it is possible to display the numbers larger and make them easier to see. The first and second date disks are rotationally driven by a single date drive source. That is, the first date disc, which has a high driving frequency, is directly driven by the date drive source, and the second date disc is rotated by the feed mechanism only when the carry is carried, and the first date disc is rotated. When the display of the first date disc at the display position shifts from "9" to "0", the feed mechanism engages the engagement portion with the second date disc by the action of the cam portion, Thus, the first date disc and the second date disc are integrated and rotated together.

Further, the calendar device is provided with a light / dark sensor and drive control means for controlling the date drive source. The drive control means drives the date drive source to rotate the first date disc to perform date feeding when the light / dark sensor detects a bright state at midnight when the date is changed. Also,
If the light / dark sensor detects a dark state at midnight, then when the bright state is detected or at a set time (for example, 9 am
Time), the date drive source is driven to feed the date. As a result, the day feeding is not performed at bedtime, and the sound generated during the day feeding does not feel annoying.

Further, the calendar device is provided with detection means for detecting the origin provided on the first date disc. Then, the drive control means corrects the display state by detecting the origin provided on the first date disc by the detection means when the date is changed at the end of the month. As a result, it is possible to correct the operation of the motor and the shift of the meshing of the gears and always maintain the display quality in a good state. In addition, by detecting the origin provided on the second date disc and the base point of the motor together, it becomes possible to detect and correct the states of the respective parts more finely.

Further, there is also provided a structure in which a day-of-the-week disk for displaying the day of the week is provided, and this is rotationally driven by a day-of-week drive source.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective front view showing the structure of each disk and its driving means of a calendar device according to an embodiment of the present invention, FIG. 2 is a front view showing its display state, FIG. 3 is its sectional view, and FIG. 6 is a sectional partial view showing a feeding mechanism portion shown in FIG. 3, FIG. 5 is a sectional partial view showing a position detecting means portion of each disc shown in FIG. 3, and FIG.
FIG. 7 is a front partial view showing the rotation detecting means of the motor shown in FIG. 3, FIG. 7 is a sectional partial view thereof, FIG. 8 is a circuit configuration diagram of a calendar device, and FIG. 9 is an external view when the calendar device is incorporated in a timepiece. is there. It should be noted that FIG. 1 shows only the outlines and main parts of the components.

2 is a digit "0" to "9" of the first digit of the date.
The first date disk 4 provided with is a blank part due to the setting of the digits "1" to "3" in the tens of the date and the interval for forming the numbers to be the same as that of the first date disk 2. Second date disk with two spaces, 6 is the letter "day" indicating the day of the week
Is a day disk provided with "Sat" and is rotatably supported by the receiving plate 8.

That is, the first date disc 2 is a ring provided on the outermost surface and having the numbers "0" to "9" formed at regular intervals (intervals of 36 ° at the central angle). The display unit 2a is shaped like a ring, and the ring-shaped support unit 2b is provided inside the display unit 2a and protrudes forward. Further, the inner peripheral wall of the first date disc 2 is provided with tooth portions 2c formed in an inner tooth shape. This tooth 2
When four (4 clicks) are sent from c by the date driving source described later, the first date disc 2 is rotated by 36 ° to send the display for one day. Further, the first date disc 2 has a cylindrical portion 8b of a support portion 8a provided at the center of the receiving plate 8 and a disc portion 8c protruding outward from the outer peripheral surface of the cylindrical portion 8b.
It is rotatably supported by.

Further, the second date disc 4 projects forward in a convex shape, and the numbers "1" to "3" and two blank portions are formed on the surface thereof and the first date disc 2 is supported. Part 2b
It has a ring-shaped display portion 4a which is fitted to the outside with play, and an engaged portion 4b having a hole, a notch or the like provided in the outer peripheral portion. The second date disc 4 is placed on the support portion 2b of the first date disc 2 and is rotatably supported by the cylindrical portion 8b of the receiving plate 8. Further, the numeral formed on the display portion 4a of the second date disc 4 is such that the rotation center of the second date disc 4 and the rotation center of the first date disc 2 are arranged coaxially, Since the second date disc 4 is set to rotate in accordance with the rotation of the first date disc 2,
The intervals for forming the numbers are set to be the same as those for the first date disc 2. As a result, three numbers "1" to "3" are assigned to the area of 10, and the numbers "1" to "3" are assigned.
2 are formed, and two blanks are formed between each pair. The arrangement of the numbers is an example, and can be changed according to the rotation control method. For example, an arrangement in which three sets of numbers "1" to "3" and one blank portion are provided is also possible.

Further, the day-of-the-week disc 6 has a ring-shaped display portion 6a in which the letters "Sun" to "Sat" indicating the day of the week are formed at regular intervals, and the ring-shaped display portion 6a protrudes to the back side and is engaged in the radial direction. It has a tooth portion 6b provided so as to fit together. This day-of-the-week disc 6 has a central shaft portion 8d of the support portion 8a of the receiving plate 8.
Is rotatably supported by a disk portion 8e protruding outward from the outer peripheral surface thereof.

In the present embodiment, the first and second date disks 2 and 4 and the day disk 6 described above are supported so as to rotate about the same central axis. As shown in FIG. The date and the day of the week are displayed by numbers and letters at the position (display position) of the display window 10 provided on the timepiece dial, the decorative plate, etc. provided on the front side of the disk.

Reference numeral 12 is a date motor, and 14 is a day of the week motor. The date motor 12 and the day-of-the-week motor 14 have rotating shafts, respectively, which have a date feeding pawl 12a and a day feeding pawl 14a.
Is attached. The date feeding pawl 12a is engaged with the tooth portion 2c of the first date disc 2, and the day feeding pawl 14a is engaged with the tooth portion 6b of the day disc 6, so that each one click can be fed. Has become.

Reference numeral 16 is a feed mechanism for engaging the first date disc 2 and the second date disc 4 and integrally rotating them when the date is carried. As shown in FIGS. 1, 3 and 4, the feed mechanism 16 is housed in the support portion 2b of the first date disc 2 and is slidably supported by holes in the inner and outer walls of the support portion 2b. Engagement pin 16 as an engagement portion that is urged radially (inwardly in this embodiment) by a spring 16a.
b and one end (inside) of the engaging pin 16b provided on the receiving plate 8 in the direction in which the engaging pin 16b is urged (inside the engaging pin 16b in this embodiment). And a cam portion 16c that moves the engagement pin 16b in the radial direction (outward) against the spring 16a by contacting with.
The cam portion 16c contacts the engaging pin 16b when the number "9" formed on the display portion 2a of the first date disc 2 reaches the position of the display window 10 and is displayed, and the display portion 2a When the numeral "0" is changed to "0" and the numeral "0" is displayed, it is formed so as to be in a non-contact state. Further, as described above, when the engagement pin 16b contacts the cam portion 16c, the engaged portion 4b of the second date disc 4 is positioned and engaged at a position facing the engagement pin 16b. It is set.

18, 20, 2 shown in FIGS. 1, 3 and 5
Reference numeral 2 denotes a first date position detecting means, a second date position detecting means and a day of the week position for detecting respective reference positions of the first date disc 2, the second date disc 4 and the day of the week disc 6. It is a detection means. As shown in FIG. 5, the first date position detecting means 18 is a switch for mechanically detecting by touching a protrusion as an origin provided on the first date disc 2 or a sensor for performing non-contact detection. In this embodiment, the display unit 2
The number “8” of “a” is set to be detected when it is displayed from the display window 10. Further, the second date position detecting means 20 is composed of a reflection type photointerrupter or the like for non-contact detection as shown in FIG. 5, and the through hole 2d provided in the first date disc 2 (FIG. 5). The specific part as the origin of the back surface of the second date disc 4 is detected via
In the present embodiment, it is set to detect the second blank part. Furthermore, as shown in FIG. 5, the day-of-the-week position detecting means 22 is composed of a switch for contacting the tooth portion 6b of the day-of-the-week disc 6 for mechanical detection or a sensor for non-contact detection.
The passage of the tooth portion 6b is detected.

24 and 2 shown in FIGS. 1, 3, 6 and 7.
Reference numeral 6 denotes a date motor detecting means and a day motor detecting means for detecting the feed by the rotation of the date motor 12 and the day motor 14. The date motor detecting means 24 and the day-of-the-week motor detecting means 26, as shown in FIGS.
And a switch for mechanically detecting by contacting with the day of the week feed claw 14a and a sensor for detecting without contacting.

Reference numeral 30 shown in FIG. 8 is a drive control means, which has a clock IC 32 and a calendar control IC 34 which are microcomputers. This drive control means 30
Is for controlling the operation of a date drive source 38 including the date motor 12 and a transistor 36 as a drive circuit thereof, and a day drive source 42 including a day motor 14 and a transistor 40 as a drive circuit thereof. The drive control means 30 includes the first date position detecting means 18 and the second date position detecting means 18 described above.
The date position detecting means 20, the day of the week position detecting means 22, the date motor detecting means 24, and the day of the week motor detecting means 26 are connected. Incidentally, the detecting means 18 to 26 shown here
Is a sensor for irradiating light to the detected portion from each of the light emitting elements 18a to 26a and receiving the reflected light by each of the light receiving elements 18b to 26b to perform non-contact detection. Further, buffer circuits B1 to B7 are provided between the drive control means 30, the transistors 36 and 40, and the light emitting elements 18a to 26a, respectively.

Reference numeral 44 shown in FIG. 8 is a light / dark sensor made of CDS or the like. The brightness sensor 44 detects the brightness around the calendar device and applies a detection signal to the drive control means 30.

Further, in the present embodiment, the standard radio signal including the time information and the calendar information is received to obtain the time information and the calendar information, so that the day feeding, the day feeding and the month end feeding are performed at a predetermined time. I am configuring. That is, the receiving circuit 46 that receives the standard radio wave signal and supplies the received signal to the drive control means 30 is provided. Further, not only the calendar control IC 34 drives and controls using the time information and calendar information obtained from the signal received by the receiving circuit 46, but also the time is measured by the clock IC 32 using the time information and calendar information to perform the movement. The time display means 48 including the pointer driving mechanism is driven to display the time and calculate the calendar. Note that, as shown in FIG. 8, the timepiece IC 32 and the calendar control IC 34 do not necessarily have to be separately provided, and a single IC in which each function is integrated can be used.

Further, in the present embodiment, switches 50 and 52 including a day correction switch, a day correction switch, a monitor switch, a reset switch, a time correction switch and the like are provided and are connected to the drive control means 30 respectively. .

Next, the operation of the calendar device having the above structure will be described. First, the rotating operation of the first and second date disks 2 and 4 and the day disk 6 in this calendar device will be described. In this calendar device,
By supplying and operating signals to the date motor 12 and the day-of-week motor 14, respectively, the first and second date disks 2,
4 and the day disk 6 can be rotated. That is, the date motor 12 is operated, and the date feed claw 12a feeds the tooth portions 2c of the first date disc 2 one by one, and the number of the display portion 2a is sent to the next number by 4 clicks (1 day Minute feed)
become. At this time, if the date is not carried, the engagement pin 16b of the feed mechanism 16 and the cam portion 1 are not displayed.
The second date disc 4 is kept in a stopped state without the contact of 6c.

When the first date disc 2 is rotated to feed one day by one day as described above, the number on the display portion 2a shifts from "9" to "0". When carrying is carried out, at this time, one end of the engaging pin 16b of the feed mechanism 16 comes into contact with the cam portion 16c (the state at the position of arrow A in FIG. 1), and the second date disc 4 is engaged. The other end is pushed out in the direction of the joint 4b. As a result, the other end of the engagement pin 16b engages with the hole, notch, or the like of the engaged portion 4b, and the second date disc 4 rotates integrally with the first date disc 2. Become.
Therefore, the ones digit of the date in the display window 10 shifts from "9" to "0", and the tenth digit of the date at this time is "1" from the blank part, or "1" to "2", or The transition is made from "2" to "3", or from "3" to a blank portion, or from a blank portion to a blank portion.

When the carry is completed and the ones digit of the date is displayed as "0", the engaging pin 16 of the feed mechanism 16 is displayed.
b is disengaged from the cam portion 16c (state at the position of the arrow B in FIG. 1) and is pulled back from the engaged portion 4b of the second date disc 4 by the spring 16a. As a result, the engagement state between the second date disc 4 and the first date disc 2 is released, and even if the first date disc 2 rotates thereafter, the second date disc 4 is in the stopped state. Will be maintained.

On the other hand, in the day-of-the-week disk 6, when the day-of-week motor 14 is activated and the tooth portion 6b is fed by three clicks by the day-of-the-week feeding claw 14a, the day of the week on the display section 6a is fed to the next day.

Next, the drive control of the first and second date disks 2 and 4 and the day-of-the-week disk 6 in the calendar device will be described with reference to FIG.
This will be described based on the flowcharts shown in FIGS. First, when the reset switch is operated or the power source such as a battery is turned on (step ST1), step S
The drive control means 30 takes in time information and calendar information from the standard radio signal received by the receiving circuit 46 at T2. Then, in step ST3, the date motor 12 and the day of the week motor 14 are operated to operate the first and second date disks 2, 2.
Rotate 4 and day disk 6. At this time, the first and second date position detecting means 18, 20 and the day position detecting means 2
The origin provided on each disk is searched by the signal from 2.
Then, the drive control means 30 supplies the drive signal including the number of pulses necessary for shifting to the display corresponding to the calendar information received from the origin, to the date drive source 38 and the day of the week drive source 42, and the date motor 12 And drives the day-of-week motor 14. At this time, the drive state of each disk is detected from the number of drive times of the motor obtained from the date motor detection means 24 and the day-of-the-week motor detection means 26, and stopped, and the process shifts to the standby state of step ST4.

After that, the time signal is interrupted every hour such as time counting by the clock IC 32 or the received signal,
The drive control means 30 changes from the standby state to the operating state (step ST5). Here, the drive control means 30 determines whether the brightness detection by the brightness sensor 44 is bright or dark (step ST6). At this time, if it is determined that it is in the bright state, it is determined in step ST7 whether it is midnight, and if it is midnight, the calendar is fed in step ST8. In this way, when the surroundings are in a bright state, it is considered that the user is not sleeping even at midnight, so even if the sound that drives each disk is generated, it hardly feels annoying. , I am sending the calendar as it is.

On the other hand, when it is judged in step ST6 that it is in a dark state, it is judged in step ST9 whether it is midnight, and if it is midnight, it is in a day feed state, that is, one day feed, end month feed. Just by setting the above states in the calendar control IC 34, the motor is actually driven to shift to the standby state without rotating each disk (standby S
T10). Then, after that, when the bright / dark state is judged at step ST6 on every hour and the dark state continues,
At the set time (for example, 9 am), step ST1
It is judged that it became 9:00 am in 1st step ST
At 12, it is determined whether the date is to be fed. The reason why the date feeding is determined here is that the date feeding may be already performed because the date feeding is performed even when the dark state is changed to the light state, as described later. When the date is to be fed, the date motor 12 and the day of the week motor 14 are driven in step ST13 to rotate the first and second date disks 2 and 4 and the day of the week disk 6 for calendar feeding. To do. In this way, when the surroundings are in a dark state, it is considered that the user is sleeping at midnight, and therefore, when the sound that drives each disk is generated, it is jarring. Therefore, in this case, the calendar is not fed, but the calendar is fed at a time when the sound becomes less noticeable than at midnight, such as 9 am.

Further, the drive control means 30 judges whether or not the switch operation is performed (step ST14), and when the switch operation is not performed, the detection state of the light / dark sensor 44 is changed from the dark state to the bright state in step ST15. Judge whether it is in a state. If the ambient brightness has changed from the dark state to the bright state, it is determined in step ST16 whether or not the date is to be fed. Then, as described above, it is determined that the date feeding is necessary before the date feeding is performed at 9:00 am, and the date motor 12 and the day of the week motor 14 are driven in step ST17, and the first and second Date disks 2 and 4 and day disk 6
Rotate to feed the calendar. Thus, even if the calendar is not fed at midnight, the calendar is fed when the surroundings become brighter after the user gets up. Therefore, the driving sound does not feel annoying and the calendar display is also switched, so that the user can see the accurate display.

When it is determined in step ST14 that the switch is operated, step ST shown in FIG.
If the detection state of the brightness sensor 44 is determined in 18 and it is determined that it is in the bright state, it is sequentially determined in steps ST19 to ST21 whether the day correction switch, the day correction switch, and the monitor switch are operated. Is step ST
From 22 to ST24, the day feed, the day feed, and the monitor operation are performed. Further, when the automatic reception is performed, it is determined in step ST25 that the automatic reception is performed, and it is determined in step ST26 whether the reception is successful. If the reception is successful, the time information received in step ST28 and If the calendar information is set and the reception is not successful, step S
At T27, it is determined whether the time has been adjusted by operating a switch or the like. Thereafter, based on the set time information and calendar information, it is determined in step ST29 whether the date is to be fed. If date feeding is necessary, the date motor 12 and the day of the week motor 14 are driven in step ST30 to drive the first motor. Then, the second date disks 2 and 4 and the day of the week disk 6 are rotated to perform calendar feeding.

The above-described calendar feeding in operation is shown in FIG.
2 and the operation flow shown in FIG. 13. That is, as described above, the date feeding for one day is performed by driving the date motor 12 four times to feed four tooth portions 2c of the first date disc 2. Therefore, the drive control means 30 outputs a drive signal in step ST101, determines whether or not the date motor 12 has been driven four times in step ST102, and carries out date feeding for one day. Also, the day of the week
As described above, this is performed by driving the day-of-week motor 14 three times to feed three tooth portions 6b of the day-of-the-week disc 6. Therefore, the drive control means 30 outputs a drive signal in step ST201, determines in step ST202 whether the day-of-week motor 14 has been driven three times, and performs day-of-the-week feeding.

Further, in the present embodiment, in the case of performing the date feeding at the end of the month in the above-described calendar feeding during operation, the origin provided on each disk is detected so that the display state can be kept accurate. It is set. That is, as in the operation flow shown in FIG. 14, in step ST301, the drive control means 30 causes the date motor 12 and the detection means 18, 20,
An output signal for origin search is output to 24. As a result, the date motor 12 is operated and the first and second date disks 2,
While rotating 4, the origin is detected by the first and second date position detecting means 18, 20. And step ST
At 302, it is determined whether or not the origin of the first date disc 2 has been detected, and if so, at step ST303 it is determined whether or not the origin of the second date disc 4 has been detected. Then, if the origin of the second date disc 4 can also be detected, it is determined in step ST304 whether or not it is at the base point from the number of times the date motor 12 is driven. As a result, the first and second date disks 2,
4 and the position of the date motor 12 that drives it can be corrected to the correct state. Here, the origin of the first date disc 2 is set to be detected when "1" is in the display position, and the origin of the second date disc 4 is detected when the blank is in the display position. If set to, the end of the day feed can be performed at the same time as the origin detection.

Further, similarly to the above, if the origin and base point of the day-of-the-week disc 6 and the day-of-the-week motor 14 that drives it are also detected, the positions of all the movable parts can be corrected to the correct positions at the end of month feeding. On the other hand, since the first and second date disks 2 and 4 are interlocked with each other, the origin may be provided on one of them to detect the rotation thereof.

[0044]

According to the present invention, it is possible to correct the display state by providing drive sources for driving the date disk and the day of the week disk, respectively, and supplying a drive signal. It can be configured to perform all settings and end-of-month modifications automatically.

In addition, since the time when the calendar is fed is changed according to the light and shade of the surroundings so that the sound for driving the date disk or the like is not generated at midnight such as midnight, the driving sound is generated. However, it does not feel annoying compared to when sleeping.

Further, by detecting the origins of the first and second date disks when the date is fed at the end of the month, it is possible to prevent the displacement of the display due to the drive of the motor and the displacement of the gear meshing. , The display quality can always be kept in good condition.

Further, since the digits of the first digit and the digits of the tens are displayed as separate disks and both disks are rotated by a single drive source, the date can be set without increasing the drive sources. Can be displayed separately for ones and tens, and the display of each number can be made large and easy to see.

[Brief description of drawings]

FIG. 1 is a perspective front view showing an internal structure of a calendar device according to an embodiment of the present invention.

FIG. 2 is a front view showing a display state of the calendar device shown in FIG.

3 is a cross-sectional view of the calendar device shown in FIG.

FIG. 4 is a partial sectional view showing a feeding mechanism portion of the calendar device shown in FIG.

5 is a partial sectional view showing a position detecting means portion of each disc of the calendar device shown in FIG.

6 is a front partial view showing a rotation detecting means portion of a motor of the calendar device shown in FIG.

7 is a partial sectional view showing a rotation detecting means portion of a motor of the calendar device shown in FIG.

FIG. 8 is a circuit configuration diagram of a calendar device of the present invention.

FIG. 9 is a front view of a timepiece when the calendar device of the present invention is incorporated into the timepiece.

10 is a flowchart showing an operation of the calendar device shown in FIG.

11 is a flowchart showing an operation of the calendar device shown in FIG.

FIG. 12 is a flowchart showing an operation of calendar feeding in FIG.

13 is a flowchart showing the operation of calendar feeding in FIG.

14 is a flowchart showing an operation at the end of the calendar feed shown in FIG.

[Explanation of symbols]

2 First date disk 4 Second Date Disc 6 day disk 8 Support plate 10 Display window 12 Date Motor 14 day motor 16 Feeding mechanism 18 First date position detecting means 20 Second Date Position Detection Means 22 Day position detector 24 Date motor detection means 26 Day of the week motor detection means 30 Drive control means 38 Date driving source 42 day drive source 44 Brightness sensor

Claims (7)

[Claims] 1. A first date disc that displays the ones digit of the date, a second date disc that displays the tens of the date, and a date drive that drives the first date disc to rotate. And the second date disk is engaged with the second date disk when the source and the date display are carried.
The date mechanism that rotates the date disc, the brightness sensor that detects the brightness, and if the brightness sensor detects a dark state at the date change time, the date drive source is held in the stopped state and the date is fed. Drive control means for driving the date drive source to rotate the first date disc when the bright / dark sensor detects a bright state at or after the date change time, and feeding the date. A calendar device characterized by. 2. The drive control means, when the dark state continues from the date change time to the set time, drives the date drive source at the set time to rotate the first date disc. 2. The date is sent.
The described calendar device. 3. The calendar device according to claim 1, wherein the date change time is set to midnight obtained from time data included in a clock or a standard radio signal. 4. A first date disk for displaying the ones digit of the date, a second date disk for displaying the tens digit of the date, and a date drive for rotationally driving the first date disk. The source and the date display carry, the first date disc and the second date disc are engaged to rotate the first date disc to rotate the second date. A feed mechanism that rotates a disc, a detection unit that detects an origin provided on one or both of the first and second date discs, and the first date disc by driving the date drive source. Is rotated to rotate the date, and when the date is changed at the end of the month, the date driving source is driven to rotate the first date disc and the detecting unit detects the origin to detect the first and second dates. Drive control means for correcting the display state of the date by the date disk of Calendar device. 5. A first date disc that displays the ones digit of the date, a second date disc that displays the tens digit of the date, and a date drive that rotationally drives the first date disc. The source and the date display carry, the first date disc and the second date disc are engaged to rotate the first date disc to rotate the second date. A feed mechanism that rotates the disc, a brightness sensor that detects the brightness, a detection unit that detects an origin provided on one or both of the first and second date disks, and the light and dark at the date change time. When the sensor detects a dark state, the date driving source is not stopped and the date is not fed, and when the light / dark sensor detects a bright state at or after the date change time, the date driving source is driven. Rotate the first date disc to send the date and change the date at the end of the month. Sometimes the date driving source is driven to drive the first
And a drive control means for rotating the date disc and detecting the origin by the detecting means to correct the display state of the date by the first and second date discs. . 6. The feed mechanism comprises a cam portion provided in a range corresponding to one date feed of the first date disc, and a display of the first date disc at the display position is " By contacting the cam portion when shifting from "9" to "0", the second date disc is engaged and the second date disc is rotated according to the rotation of the first date disc. The calendar device according to claim 1, further comprising: an engaging portion that rotates. 7. A day-of-the-week disc for displaying a day of the week and a day-of-week drive source for rotationally driving the day-of-the-week disc, wherein the day-of-the-week disc is rotated by the day-of-week drive source to send the day of the week. The calendar device according to claim 1, which is modified.