JPS582776A - Pointer type differential time correcting clock - Google Patents

Abstract

PURPOSE:To make the correction of a differential time sure and shorten the correction time, by driving an analog display mechanism by two electro-mechanical transducers, which are driven independently of each other, to correct the differential time. CONSTITUTION:The first motor 8 is normally driven once in one second to drive a second hand 10. The second motor 13 is a micro step motor driven normally once in one minute to drive a minute hand 15 and a hour hand 16. An external operation member 17 is a switch which is pulled from the normal position by one stage and is rotated slowly to correct the time and is rotated quickly to correct one-hour difference. When a differential time correction instructing signal is outputted, 60 driving pulses are outputted from the second driving circuit 5, and the second motor 13 correct one-hour difference. The minute hand 15 and the hour hand 16 are switched to the normal time display and the alarm time display with fast forwarding by a time counting circuit for hour and minute functions, and a driving pulse which drives an alarm device is outputted from a ringing controlling circuit by the alarm signal of this time counting circuit.

Description

[Detailed Description of the Invention] The present invention relates to an electronic timepiece in which a time difference correction function is added to a pointer-type timepiece. To provide a pointer-type time difference correcting timepiece that enables rapid adjustment of the hands, operates reliably, and is easy to use.

Conventionally, attempts have been made to add a time difference correction mechanism to pointer type watches. Some 3-hand time difference correction watches have a clutch mechanism between the second hand, 1 minute hand, and hour hand, so that by operating the crown, the hour hand can be adjusted by 1 hour while the second hand continues to move normally. This becomes complicated, and when the time difference is corrected, force is transmitted to the motor via the clutch, which tends to make the operation unstable. Also, when correcting the time difference by electromagnetic correction, the correction time is short with 2-hands, but it takes a long time to correct with 3-hands.

The purpose of the present invention is to improve the above-mentioned drawbacks, to ensure the time difference correction of a three-hand watch, and at the same time to shorten the correction time. To provide a pointer type time difference correcting timepiece which reduces the construction cost of a clutch mechanism and can correct the time difference in a short time by being driven by a motor which is an electro-mechanical converter.

The present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the system of the pointer type time difference correcting timepiece of the present invention, which includes a first motor that drives the second hand;
Consists of two systems: a second motor that drives the minute hand and hour hand, 1 is a time reference source, 2 is a first frequency dividing circuit, 3 is a first control switching circuit, 4 is a first drive circuit, 8 The first motor 6 for driving the second hand is a second frequency dividing circuit, 11 is a second control switching circuit, 5 is a second drive circuit, and 13 is a second motor for driving the minute hand and hour hand. A time reference source 1 consisting of an ultra-small crystal oscillator 9 oscillation circuit outputs a time reference signal of approximately 32 kHz or approximately 4 MHz at 2 to the n power.

The first frequency dividing circuit 2 is composed of a clip-flop that divides a high frequency time reference signal into a lower frequency and outputs a clock signal, and its output includes a first control switching circuit 3 and a waveform conversion circuit. First drive circuit 4, second drive circuit 5
, and the second frequency dividing circuit 6, and signals of necessary frequencies are outputted to each circuit, but these are not shown in the drawing.

The first control switching circuit 3 is composed of gates, and transmits a clock signal such as a second signal to the first drive circuit 4, and performs control according to a switch input signal of the switch control circuit 7.
and transmit correction pulses. The first motor 8 is driven by a pulse for driving the second hand outputted from the first drive circuit 4.
Drives once per second? L, Eq 1 A small step motor is decelerated by the second wheel train 9 and drives the second hand 10. The second frequency dividing circuit 6 is a circuit that divides the clock signal output from the first frequency dividing circuit 2 to a lower frequency, and specifically divides the frequency of the second signal and outputs a divided signal. Second control switching circuit 1.1
consists of gates, minute signal and time difference function clock circuit 1
The time difference correction pulse outputted based on the count value of 2 is transmitted to the second drive circuit 5, controlled according to the switch input signal of the switch control circuit 7, and the correction pulse is transmitted. The second motor 13 is an ultra-compact step motor that is outputted from the second drive circuit 5 to drive the minute hand.It is normally driven once per minute with 5 pulses, and is decelerated by the division train 14 to drive the minute hand , drives the hour hand 16.

The external operating member 17 is a crown-type switch that adjusts the time and time difference at all times, and when pulled out one step from the normal position and rotated slowly, the time can be adjusted, and when rotated quickly, the time difference can be adjusted by one hour. To simplify the explanation, the first motor 8 and the second motor 13 are motors that rotate only in the forward rotation direction, and the minute hand 15 normally moves once every minute. 7): Describe the case. FIG. 2 is a circuit diagram showing a specific configuration of a part of the time difference function timer circuit and the second control switching circuit of the present invention. . The second control switching circuit 11 has multiple configurations such as 1 ant game)'18 and an OR gate 19, 51 indicates an input terminal for a clock signal (here, a minute signal once per minute), and 54 indicates a second control switching circuit 11. drive circuit 5
The output terminal of the drive pulse signal is shown. The time difference function clock circuit 12 includes an RS flip-flop 20 and an AND gate 21
, an up counter 22, an AND gate 237, and an OR gate 24, 52 is a 64 Hz signal, 53 is a time difference correction command signal, and 55 is an input terminal for an all reset signal. The up counter 22 is a circuit that counts 60, and when the AND gate 23 detects that the count has reached 60, the up counter 22 passes through the OR gate 24 and is reset to 0 again.

When the external operating member 17 is pulled down one step from the normal position and rotated quickly, the time difference correction command signal is output from the switch control circuit 7, and 1·crus is input from the input terminal 51, and the RS
The output Q of the flip-flop becomes 1H' (1), and the AND gate 21 inputs the 64)(z signal at the input terminal 52 to the OR gate 19 and the up counter 22.

When the up counter 22 counts 60, the AND gate 23 outputs a reset signal, ! The S flip-flop 20 is reset, the output Q becomes 'L' (0), and the up counter 22 is also reset to O at the same time. During this time, the output terminal 54 outputs a 60-pulse drive AJ-less double signal, the second drive circuit 5 outputs a 60-pulse drive pulse, the second motor 13 is driven 60 times, and the division train 14 The minute hand 15 and the hour hand 16 rotate forward for one hour.
Adjust the time difference by 1 hour. When a minute signal, which is a clock signal, is input from one input terminal 51 during time difference correction, the AND gate 18
The output is 0 (0), and the output terminal 54 outputs a signal for driving and sills. This minute signal causes the minute hand 15 to advance by 1 minute, and the input terminal 51 outputs a clock signal. If there is no , the output of the AND gate 18 will be %H#(t) again,
A 64 Hz drive pulse signal is output from the output end 54 until the up counter 22 counts 60.

Above, we have described the case of 1-minute movement in which the hand moves once per minute.
0, 15, 20, 30.60 integers) 60/
When the hand movement is n seconds, the up counter 22 is set to 60x.
It is enough to use a circuit that can count.

In this embodiment, the second control switching circuit 11 omits normal time adjustment signal processing.

Figures 3 and 4 show another embodiment of the present invention, in which a time difference correction function is added to an analog watch with an alarm function.
The figure is a front view of the external appearance of the watch. The external operating member 17 is composed of a crown-type switch 117 and a bushing switch 217. The crown-type switch 117 is normally used in the S and O positions, and can be pushed in the S11 direction or pulled in the SIG direction. It is a combined actuation crown type switch that is activated by pulling it in the 81G direction and turning it to the right or left as shown by SI2& or S+2b. Bush switch 2
17 is a switch that is activated by pushing in the S direction. Fourth
The figure is a block diagram showing the system, and parts common to those in FIG. 1 are designated by the same numbers. The seconds function timing circuit 25 includes a second counting circuit consisting of an up/down counter capable of counting 30, an auxiliary second counting circuit thereof, and a seconds discrimination circuit that inverts to % HI or % LI every time 30 is counted. The hour/minute function timing circuit 26 includes an hour/minute counting circuit consisting of an up/down counter capable of counting 360, its auxiliary hour/minute counting circuit, and 3
It consists of an hour/minute discrimination circuit that inverts to 1H' or % LI every time it counts 60. The ringing control circuit 27 is the alarm device 2
This is a control circuit that drives 8 and outputs an alarm sound 4. The first motor 108 and the second motor 113 are each ultra-small step motors capable of forward and reverse rotation. The hour and minute function clock circuit 26 controls the minute hands 15 and 26.

The hour hand 16 is quickly switched between a normal time display and an alarm time display, and a drive pulse for driving the alarm device 2B is output from the ringing control circuit 2T according to the alarm time of the hour/minute function clock circuit 26. . The seconds function timing circuit 25 allows the second hand to display seconds at normal time and around 0 seconds at alarm time.
3 time difference function clock circuit 12th function that can be switched to fast forward display
The configuration is the same as shown in the figure. In the normal time mode, turn the crown switch 117 to S. If you pull in the S+ta direction and rotate quickly in the S+ta direction, you can correct the time difference by 1 hour by reversing the S+2 direction.
If you rotate quickly in direction b, you can correct the time difference by 1 hour with forward rotation.

In alarm time mode, set the alarm time to 1 hour
Can I fix it? One hit with knee.

The motor used to correct the time difference was set to fast forward at 64 Hz, but it can also be changed to 32 Hz for reverse, or 128 Hz for forward/reverse. In this embodiment, an example has been described in which the second hand, hour hand, and minute hand are driven by separate motors, but a system in which the second hand and minute hand are driven by the same motor and the hour hand is driven by a separate motor may also be used. □In addition to the alarm function, the present invention can also be implemented in a pointer type watch with a chronograph function or a dual time function. If the minute signal interrupts during reversal when correcting the time difference, either rotate the minute signal in the forward direction by one pulse, or change the minute signal's one pulse to the up counter 2.
2, and only then can the time difference be corrected to the correct time position by thinning out the drive pulses for reverse rotation.

As described above, according to the present invention, a time reference source, a frequency dividing circuit,
In an analog watch consisting of a drive circuit, a first electro-mechanical converter, a second electro-mechanical converter, an analog display mechanism consisting of a plurality of hands, a control switching circuit, and an external operation member, a time difference function time measurement circuit is provided. When the external operating member is operated, a time difference correction pulse is output based on the count value of the time difference function clock circuit, and the first electrical-mechanical converter and the second electrical-mechanical converter are connected to each other.
Since the mechanical converter and the mechanical converter are driven independently of each other, the time indicated on the analog display mechanism can be corrected for the time difference very quickly, making it extremely convenient when traveling abroad or going to a region with a time difference within a large country. Furthermore, even when adjusting the time difference, the second hand is driven independently, so you can always know the correct second time. Furthermore, even if the minute signal interrupts while the minute hand and hour hand are being fast-forwarded during time difference correction, according to the present invention, the signal is processed correctly by the time difference function clock circuit and the control switching circuit, and the correct number of drive pulses and signals are output. is output, so the hands are driven to the correct time difference after the minute signal interrupts.
You can obtain an extremely accurate clock without the clock going out of order while adjusting the time difference.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view showing the system of a pointer type time difference correcting timepiece. FIG. 2 is a circuit diagram showing a specific configuration of a part of the time difference function timing circuit and the control switching circuit. FIGS. 3 and 4 show other embodiments, in which FIG. 3 is an external front view of a pointer-type timepiece with an alarm function, and FIG. 4 is a block diagram showing a system to which a time difference correction function is added.

Claims (1)

[Scope of Claim] A time reference source 1 frequency divider circuit, a drive circuit, a first electro-mechanical converter, a second electro-mechanical converter, an analog display mechanism including a plurality of hands, and a control switching circuit. In a pointer-type watch consisting of an external operating member. A time difference function timing circuit is provided, and when the external operation member is operated, a time difference correction pulse is output based on the counted value of the time difference function timing circuit, and the first electro-mechanical converter and the second
A pointer type time difference correcting timepiece, characterized in that the electro-mechanical converter and the electromechanical converter are driven independently of each other to correct the time difference of the time indicated by the analog display mechanism.