JPS6145190B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic timepiece with a month-end non-correction mechanism, which has a pointer-type analog time display, has a built-in calendar mechanism, and has a motor capable of forward and reverse operation as a driving source.

In conventional electronic watches with a built-in calendar mechanism, it takes several hours to change the calendar, not only in electronic watches but also in mechanical watches.

Therefore, in the present invention, an electronic timepiece having the following configuration was considered.

An electronic watch with a pointer-type analog display and a calendar mechanism has a motor capable of forward and reverse rotation, a time series wheel train that rotates in response to the forward rotation driving force of the motor, and a time series wheel train that rotates in response to the reverse rotation driving force of the motor. 1 after receiving signals from the driving date plate and moon plate, and the time system wheel.
A detection mechanism that detects a specific time of the day; a calendar detection mechanism that detects the 31st day of a small month from the date plate and the moon plate; a memory circuit that stores the signals of both detection mechanisms and outputs the memory state; and the memory. a control circuit including a timer circuit for controlling a state; a switching means that receives a signal from the control circuit and switches between a clock pulse from a frequency dividing circuit and a fast-forward signal and sends it to the drive circuit; a switching means that receives a signal from the control circuit; forward/reverse switching means for sending a forward/reverse switching signal to the drive circuit;
When the time detection mechanism detects a specific time of the day, or when the calendar detection mechanism detects a small month.
When the 31st is detected, the control circuit causes the drive circuit to advance the date plate by one day by reversing and fast forwarding the date plate.

FIG. 1 is a block diagram of an example of an electronic timepiece according to the present invention.

2 is a reference signal generation source, 4 is a frequency dividing circuit, 6 is a switching means, 8 is a drive circuit, 9 is a motor, 10 is a wheel train, 12 is a pointer, 14 is a date display mechanism, 16 is a month display mechanism, 18 19 is a calendar detection mechanism, 19 is a time detection mechanism, 20 is a control circuit, and 22 is forward/reverse switching means.

Under normal conditions, this electronic clock receives a 1Hz clock pulse from the frequency dividing circuit 4, generates a normal rotation pulse in the drive circuit 8, rotates the motor 9 in the normal direction, and transfers this force to the wheel train 10.
The hands 12 such as the hour hand, minute hand, second hand, etc. are operated via the wheel train 10. When the motor 9 is rotating normally, the force from this gear train 10 is applied to the date display mechanism 14.
It is configured so that it is not transmitted. and,
When the pointer 12 displays a fixed time due to the normal rotation of the motor 9, the time is detected by the time detection mechanism 19 based on the position of the wheel train 10, and the control circuit 20 is operated based on the detection signal. The switching means 6 is controlled to send the fast forward signal from the frequency dividing circuit 4 to the drive circuit 8.
At the same time, the forward/reverse switching means 22 is controlled so that the motor 9 is rotated quickly in the reverse direction by the fast forward signal transmitted to the drive circuit 8. When the motor 9 rotates in the reverse direction, the wheel train 10 rotates in the opposite direction to the normal rotation, causing the pointer 7 to rotate in the opposite direction. At the same time, the rotational force of the wheel train 10 is transmitted to the date display mechanism 14 to change the date. At this time, since the wheel train 10 is rotating in fast forward motion, the date can be changed in an extremely short time. On the other hand, the control circuit 20
automatically operates and after the wheel train 10 has rotated as much as necessary to change the date, the forward/reverse switching means 22 is controlled so that the drive circuit 8 generates a signal for forward rotation for fast forwarding, and the motor 9 is rotated forward. Fast forward, gear train 1
0 rotates quickly in the normal rotation direction. The control circuit 20 takes into account the time required to change the date and the time and time required for forward rotation fast forwarding, and after fast forwarding in the forward rotation direction until the time delay is recovered, controls the switching means 6 and outputs a normally 1Hz time signal. is transmitted to the drive circuit 8 to return the pointer 12 to normal movement.

In this embodiment, a month-end non-correction mechanism is also added, and when the date reaches the 31st in a small month, the calendar detection mechanism detects this and controls the control circuit 22 to transmit the date for one more day. I have to.

FIG. 2 is a plan view of the electronic timepiece based on FIG. 1. The hour wheel 24 on which the clock is attached is the daily transmission 2.
6. The date dial 34 is driven by one tooth by the date dial 32 via the date transmission pinion 28 and the date wheel 30 when the date plate 34 moves in the opposite direction to the normal rotation direction for about three and a half hours.

During normal hand movement, even if the date claw 32 is attached to the date plate 34, the force is released by the spring 36, so the date plate 34
It doesn't turn. A pin 38 is attached to this hour wheel 24, and when the hour hand comes to the 12 o'clock position, this pin 38 pushes a spring 40, and this spring 40 connects a separately provided contact 40.
to detect the time of 12 o'clock. Twice a day, this spring 40 and the contact point 42 come into contact, and the circuit determines whether it is night or day in advance, and when the time of 12 o'clock is detected, the gear train rotates quickly in reverse. Within a short time, the date plate 34 is driven by one tooth to change the date, and when the change is completed, the wheel train is quickly rotated again in the forward rotation direction, and after setting the time, it returns to normal rotation. Also, on this watch, the date plate is 3.
4 is equipped with a conductive moon plate feed pin 44, so that the month display plate 46 is fed when the change is made from the 31st to the 1st.

The month display board 46 is provided with a Monday system lever 48.

The switch spring 50 is provided at a position where it comes into contact with the pin 44 when the date plate 34 comes to the position where the 31st is displayed, but when the month display plate 46 displays a large month, the Monday system lever 48 is Push up the insulating part 52 to the outside, switch spring 50 and pin 4.
4 does not make contact. However, when the month display board 46 displays a small month, the Monday system lever 48 is moved by the insulating section 52.
switch spring 50 and pin 44 to prevent pushing up the
contacts and detects the 31 day calendar of the lesser month. When this is detected, the gear train rotates rapidly in reverse,
It is configured to send the date for one more day.

FIG. 3 is a partial circuit block diagram centered on the control circuit 20 of this timepiece.

In a normal state, a 1 Hz time pulse signal is transmitted from the frequency dividing circuit 4 to the drive circuit 8 via the line 54 and the switching means 6.

In the drive circuit 8, when a time pulse signal is output to the output lines 60, 62 of the AND gates 56, 58, a trigger set/trigger reset type flip-flop 64 is controlled by the signal. A time pulse signal is output to the output line 60, and the TS of the flip-flop 64 is output via the OR gate 66.
When input to the input, the Q of flip-flop 64
The output becomes "H" level when the pulse signal falls from H to L, and the AND gate 58 opens and the output becomes "L" level.
Close. Therefore, the next pulse of the time pulse signal transmitted from the frequency dividing circuit 4 is outputted to the output line 62 through the AND gate 58.

At this time, this signal is sent to the TR input of the flip-flop 64 via the OR gate 68, and at the falling edge of the pulse signal, the Q output becomes "L" level and the output becomes "H" level.
6 opens and AND gate 58 closes.

Therefore, the pulse of the next time pulse signal is output from output line 6.
By outputting pulses alternately to the output line 60 and output line 62 in this way, a current in the opposite direction flows through the coil 70 attached to the motor each time, changing the polarity of the motor. This will cause the rotor of the motor to rotate.

The spring 40 shown in FIG. 2 contacts the contact 42,
When the time of 12 o'clock is detected, the line 72 of the control circuit 20
changes from "L" to "H", and the output line 76 of the flip-flop 74 changes from "L" to "H". When the spring 40 contacts the contact point 42 again, the output line 76 changes from "H" to "L" and the output lines 80, 84 of the flip-flops 78, 82 change from "L" to "H". do. The flip-flop 78 serves as a storage circuit that stores the detection signal from the time detection mechanism 19 and also stores the detection signal from the calendar detection mechanism 18, which will be mentioned later, and outputs the stored state to the switching means 6.

This flip-flop 74 can be reset by an external control terminal 81 to the control circuit 20, and when the time of 12 o'clock in the daytime is detected, the output line 76 of the flip-flop 74 goes to "H",
Adjust in advance so that it changes to "L" when detecting the hour.

When the output line 80 becomes "H" level, the AND gate 86 of the switching means 6 is closed.
8 is opened, and the pulse signal transmitted from the frequency dividing circuit 4 to the drive circuit 8 is switched to a signal for fast forwarding transmitted through the line 90.

On the other hand, when the output line 84 becomes "H", the AND gate 92 opens and the flip-flop 82 is immediately reset by the a signal transmitted from the frequency dividing circuit 4, so that a thin pulse signal is output to the output line 84. However, this signal is transmitted to the forward/reverse switching means 22, passed through the OR gate 94, and is output as a signal from the respective output lines 100, 102 via the open one of the AND gates 96, 98.

When the Q output of the flip-flop 64 of the drive circuit 8 is H, the AND gate 96
are designed to open when the output is H, but when a signal is output to the output line 100, that signal is transmitted to the TR input of the flip-flop 64 via the OR gate 68, causing the Q output to be L and the output to be H. When the signal is output to the output line 102, the flip-flop is output via the OR gate 66.
A signal is transmitted to the TS input, changing the Q output to H and the output to L. That is, the output state of flip-flop 64 is reversed. In this state, a pulse signal for fast forwarding is transmitted from the frequency divider circuit 6 through the line 90 after being switched by the switching means 6, but the output state of the flip-flop 64 is reversed, and therefore, it is controlled by the output state. Since the open/close states of the AND gates 56 and 58 are also reversed, the pulse signals output to the output lines 60 and 62 are on the side of the output lines 60 and 62 that last outputted pulses when they were being sent in the normal state. Then, a pulse is output. As a result, the motor rotates in reverse, and from then on, the motor performs rapid forwarding in the reverse direction.

On the other hand, when the output line 80 becomes H, the AND gate 10
4 opens and a fast forward signal is sent from line 90 to timer 1.
06.

This timer 106 calculates in advance the time that the date plate 34 can be driven by one tooth by reversing the gear train.
It consists of The date plate 34 can be driven by one tooth, and after changing the date, the timer 106 outputs its output line 1.
Change 08 from L to H. Output line 108 is L
When the level changes from L to H, the output line 112 of the flip-flop 110 changes from L to H, and a thin pulse signal is output to the output line 116 of the flip-flop 114. This signal is transmitted to the forward/reverse switching means 22, and in the same way as the pulse signal is output to the output line 84, the drive circuit 8 is controlled to be forward/reverse, and the motor which was being fast forwarded in the reverse rotation is now fast forwarded in the forward rotation.

On the other hand, when a thin pulse signal is output to the output line 116, the timer 106 is reset, the timer time is measured again, and when exactly the reversed time has elapsed, the output line 108 of the timer I 106 changes from L to H again, but this time Since the output line 112 of the flip-flop 110 is H, only the output line 112 is changed from H to L, and the flip-flop 11
No thin pulse signal is output from 4 onwards. Therefore, the timer 118 starts counting by the fast-forward signal transmitted through the line 90, and after counting enough to recover the time delay of the reverse fast-forward and forward fast-forward, the output line 120 is changed from L to H. Then, the flip-flop 78 is reset, the output line 80 is returned from H to L, the AND gate 86 of the switching means 6 is opened, and the AND gate 88 is closed, thereby stopping normal rotation fast forwarding and returning to normal forwarding. At this time, flip-flop 78 is reset at the same time. Until this reset is performed, the flip-flop 78 continues to store the detection signal from the time detection mechanism 19 or the calendar detection mechanism 18. is controlled.

When the output line 120 becomes H, the timer 106 and the timer 118 are reset.
On the other hand, when fast forwarding in reverse and forward again,
In FIG. 2, the spring 40 and the contact 42 come into contact and a detection signal of 12 o'clock is input, but since the gate 122 is configured to close when the line 80 is H, the influence of this signal input is I don't accept it.

The detection signal from the detection mechanism for the 31st day of the small month is input from the input terminal 124 of the control circuit 20 and passed through the OR gate 126, and when the signal is input, the flip-flops 78 and 82 are changed from L to H. The control circuit 20 operates in the same manner as when the date is sent by the signal from the time detection mechanism 19.

As explained above, by using the electronic timepiece according to the present invention, it is possible to change the date in an extremely short time.

For example, if a 64 Hz pulse signal is used as the fast-forward signal shown in FIG. 3, it is possible to fast-forward in reverse in 2 to 3 minutes, change the date, and have the hour and minute hands display the correct time in another 2 to 3 minutes. During this period, the hour and minute hands will not display the correct time, but we know that the date will be changed at the fixed time every day, and we can tell by distinguishing between reverse fast forward and forward fast forward. You can also estimate the time.

If we consider this application based on a mechanism that changes the date by fast forwarding, it is possible to achieve no correction at the end of the month simply by adding a mechanism that detects the "31st day of the small month."

This was achieved by creating a system configuration in which the mechanism for advancing the date by one day is a common system for both the fast-forwarding date and the non-correcting calendar mechanism, and then a configuration that allows each function to work. , which has both the functions of sending the date in an instant and sending the month-end date without modification, and has a simple overall structure.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an electronic timepiece according to the present invention.
FIG. 2 is a partial plan view of the electronic timepiece of the present invention, and FIG. 3 is a partial circuit diagram of the electronic timepiece of the present invention. 4... Frequency dividing circuit, 6... Switching means, 8...
Drive circuit, 9... Motor, 10... Wheel train, 18...
...Calendar detection mechanism, 19...Time detection mechanism, 2
0... Control circuit, 22... Forward/reverse switching means, 34...
...Date board, 46...Moon board, 78...Memory circuit, 11
9...Timer circuit.

Claims (1)

[Claims] 1. A motor capable of forward and reverse rotation in an electronic watch with a pointer-type analog display and a calendar mechanism;
A time-based gear train that rotates in response to the forward rotation driving force of the motor, a date plate and a moon plate that rotate in response to the reverse rotation driving force of the motor, and a time-based gear train that receives signals from the time-based gear train and rotates each day. A detection mechanism that detects a specific time, a calendar detection mechanism that detects the 31st day of a small month from the date plate and the moon plate, a memory circuit that stores the signals of both detection mechanisms and outputs the memory state, and the memory state. a control circuit including a timer circuit to control; switching means that receives a signal from the control circuit and switches between a clock pulse from a frequency dividing circuit and a fast-forward signal and sends it to the drive circuit; forward/reverse switching means for sending a forward/reverse switching signal to the circuit, and when the time detection mechanism detects a specific time of the day or the calendar detection mechanism detects the 31st of a small month An electronic timepiece with a month-end non-correction mechanism, in which the drive circuit advances the date plate by one day by reverse fast forwarding under the action of a control circuit.