JPS6030910B2 - analog alarm clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an analog alarm clock that does not use a guide hand.

[Prior art]

Recently, wristwatches have been made of quartz crystals, and there are fewer errors in time accuracy, making it possible to provide accurate timepieces.

Furthermore, digital watches are becoming more multi-functional, such as those with alarm functions and chronograph functions. However, analog watches are not as versatile as digital watches. This is because analog watches have many mechanical parts and are difficult to complicate. Several analog alarm clocks have been devised and put into practical use, but as is well known, most of them have used a measuring mechanism using a measuring wheel. [Problems to be solved by the invention] In such a conventional structure, the approximate accuracy is poor, ranging from several minutes to one minute.
The introduction of crystalline analog and alarm clocks was delayed due to reasons such as the unsuitability of crystal clocks.

The present invention provides a simple and reliable analog alarm clock. [Means for solving the problem] The analog alarm clock of the present invention divides the output of the oscillation circuit with a frequency divider, supplies a low frequency signal to the motor via the drive circuit, and uses the gear train to generate the time. In an analog alarm clock that operates a minute hand, the frequency dividing circuit generates a reference signal for normal hand movement and a fast-forward signal for fast forward movement of the hands, and one of the two signals is selectively passed to the drive circuit by external input. a selection circuit that starts operation in response to an external input to select a fast-forward signal, and a counter that counts the number of pulses until the hands reach the alarm time from the current time; It consists of a coincidence detection circuit that compares the number of pulses up to the alarm time, an alarm means connected to the coincidence detection circuit, and an independent hand movement mechanism that independently drives the hour hand;
It has a switch means for outputting an output signal to the millet in which the hour hand moves for a unit time in accordance with the operation of the independent hand movement mechanism, and the unit time signal is inputted to a counter, so that it is configured to count in hour unit digits. Features.

[Function] According to the above configuration of the present invention, the hand is fast-forwarded from the current time to the alarm time, the number of pulses during that time is counted and stored,
When comparing the number of pulses of the normal hand movement signal from the current time to the alarm time and emitting an alarm sound when they match, an independent movement mechanism for the hour hand is provided, and a switch means is activated each time the hour hand moves by an individual time. It operates and generates an output signal, which is input to the counter that counts the fast forward signal, and counts the hour unit digits, so alarms can be set separately for hours and minutes and seconds, and the minute and second hands can be set separately. Activation time is significantly reduced, allowing quick alarm setting.

〔Example〕

The present invention will be explained in detail below using Examples.

Fig. 1 is an external view showing one embodiment of the present invention, 21 is a case, 22 is a dial, 12 is a crown that engages with the winding stem 4 in Fig. 3, 7 is a second hand, and 8 is a minute hand. , 9 is the hour hand, indicating that the current time is 4:10:0.

Further, FIG. 2 is a sectional view showing a portion of the wheel train 6 in FIG. 4, FIG. 3 is a plan view showing the hour hand independent movement mechanism, and FIG. 4 is a block diagram showing the relationship with each means. . Figures 2 and 3
In the figure, the rotation obtained by the stator 36 and rotor 28 is transmitted to the fourth wheel & pinion 23, third wheel & pinion 27, and second wheel & pinion 26, and the pinion 24 is frictionally connected to the second wheel & pinion 26. 31 to drive the hour wheel 25. 7 is the second hand, 8 is the minute hand, and 9 is the hour hand.

10 is placed on the upper surface of the main plate 37 by a jumping wheel, and is also mounted on the pond plate 3.
Although it can be rotated as a guide around the protrusion cut out from 7, it is normally positioned by a jump bar 11.

The day setting bar 11 is fixed to the main plate 37 with a screw 42, and its head has a spring property and works in cooperation with a pin 32 disposed through a bush 33 to act as an electrical switch member. fulfill a role. In addition, in normal operation, the cylinder pinion 2
4, the number of teeth of the hour wheel 25 is 32, the number of teeth of the pinion of the Hino's favorite wheel 31, which is pivotally supported on the jump wheel, is 8, and the number of teeth of the gear is 27. The rotation of the cylinder pinion 24 is slowed down and transmitted to the hour wheel 25, and the fourth wheel & pinion 23, the cylinder pinion 24, and the hour wheel 25 are set at 720:12, respectively. It is operated at a speed ratio of :1. When the crown 12 is rotated here, the rotation of the crown causes the stop wheel 41 to rotate, the correction wheel 49 that meshes with the stop wheel 41 rotates, and drives the magic control wheel 10 that meshes with the correction wheel. When the jump control wheel 10 is driven, the sun wheel wheel 31 installed on the face control wheel also rotates by the same angle. In this embodiment, each box control wheel 10 has 11 teeth, and the rotation of the crown causes the jump control wheel 10 to rotate while exhibiting a click feeling similar to old rotation. In this case, the tube pinion 24 becomes the sun wheel, and the hour wheel 31 becomes the planet wheel, which becomes a planetary gear mechanism, and the rack wheel LO rotates a total of 25 times for one rotation, and only the hour hand 9 rotates. It becomes possible to rotate it separately for one hour. As the jump control wheel 10 rotates, the face control wheel 1 engages with the spring control bar 11, which positions the jump control wheel 10.
It moves to position 1b and comes into contact with the pin 32. It is input to the counter for setting the alarm time and counts the hourly digits. Note that 35 is a receiving plate, and 22 is a dial plate.
Further, 34 is a lead spring for sending a signal to the rotation.
Next, the overall configuration will be explained using FIG. 4. In Figure 4,
1 is an oscillation circuit, 2 is a frequency dividing circuit, and 3 is an IHZ pulse from the frequency dividing circuit 2 according to a command from the control circuit 14.
A selection circuit selects a pulse and transmits it to the drive circuit 4, 5 is a motor meshing with the wheel train 6, 7 is a second hand, 8 is a minute hand, 9 is an hour hand, 10 is a face control wheel, and 11 is a jump bar. , corresponds to the parts in FIGS. 2 and 3. 13 is a well-known switching mechanism consisting of a mandarin duck and a cannula (both not shown);
The mandarin duck and canine have an electrical switching function and are interlocked with the control circuit 14.

15 is a counter circuit connected to the control circuit 14 and the frequency dividing circuit 2; 16 is a counter circuit connected to the control circuit 14, the selection circuit 3, the memory circuit 17, and the switch of the face control bar 11; When it is detected that the contents of the counter circuit 16 and the memory circuit 17 match,
a coincidence detection circuit 2 that sends a signal from the alarm drive circuit 19;
0 is an alarm means. First, an example will be explained in which the user of the watch attempts to set the alarm time to 5 o'clock.

Note that Table 1 is shown on the next page to make the operation easier to understand. This is an operation status table showing the operation status when setting the alarm time. First, when the crown 12 is operated, a forward switching mechanism is activated, and a signal is sent to the control circuit 14 by the switching action of the mandarin duck and the cannula. The control circuit 14 transmits a signal to the selection circuit 3. Then the selection circuit is the previous IH
The drive pulse No. 2 is selected from the No. 2 normal drive pulses on the 8th day and transmitted to the drive circuit 4. The pulses are amplified by the drive circuit 4 and sent to the motor 5, which drives the wheel train 6.
is moved, and the second hand 7 is moved by eight divisions per second. A third wheel & pinion 27 that engages with the fourth wheel & pinion 23 to which the second hand is attached.
The second wheel 26 engaged with the third wheel 27 is also driven at eight times the speed of normal operation, and therefore the hour and minute hands attached to the cylinder pinion 24 and hour wheel 25 are also driven at the speed ratio of the same machine. On the other hand, the 8HZ drive pulse is also input to the counter circuit 16, and the counter circuit 16 calculates the number of pulses (A in Table 1) from the time when the control circuit 14 switches to the 8HZ drive pulse. Start counting. On the other hand, the IH2 drive pulse output from the frequency dividing circuit 2 is input to the counter circuit 15, and at the same time as the crown is operated, the counter circuit 15 receives the IHz drive pulse (Table 1). Count B). This count number counts the elapsed time of the alarm time setting operation. There is a difference of 3000 seconds from the time 4:10:0 when the crown operation starts (hereinafter referred to as the first current time) to 5 o'clock, but if this is calculated by moving the hands on an 8-second scale per second. 379 sand, or 6 minutes and 19 dens, and the indicator hand would later indicate exactly 5 o'clock.

When the crown is operated again when the display hand indicates 5 o'clock, a signal is sent to the control circuit 14 by the function of the cutter mechanism 13, and the control circuit 14 sends a signal to the drive circuit 4,
A signal is transmitted to the counter circuit 16, and the drive circuit 4 stops supplying the drive pulse, and stops the operation of the motor and the movement of the display hands.

(Even during this stop, the oscillation, frequency division, and counter circuits 15 are in operation.) Also, the counter circuit 16 stores a count number of 3000 (A in Table 1) in the memory circuit 17. After this, the counter circuit r6 is reset to 0.
Return to After stopping for 5 seconds to allow the user to confirm the set alarm time, the display hand is reversed by a reverse drive pulse of 2 on the 8th in cooperation with the motor according to a command from the control circuit 14. Start. The counter circuit 16 counts this 8Hz reverse drive pulse.
Corresponds to C in Table 1. The control circuit 14 controls the count number of the counter circuit 16 that measures the elapsed time from the start of the alarm time setting operation and the counter circuit 1.
This state is continued until the sum of the counts of the reverse drive pulses of 6 matches the number of stored contents of the memory circuit. The sum matches the contents of the memory circuit 17 291 seconds after the start of the reversal. At the same time as stopping the reverse rotation in this state, the control circuit 14 causes the selection circuit 3 to select the IH2 drive pulse for normal operation, and at the same time enters normal operation, resets the information in the memory circuit, and resets the information in the counter circuit 16. (C in Table 1) is newly input to the memory circuit, and the driving pulses of the normal operation are newly counted. At this time, the indication of the display hand is the current time (second current time) obtained by adding the elapsed time to the first current time. The coincidence circuit judges the contents of the counter 16 and the information in the memory circuit, and when they match, the coincidence detection circuit 18 sends a signal to the alarm drive circuit 19, and the alarm drive circuit 19 receives this command. , the alarm means 20 is activated by a 4096 Hz signal from the frequency dividing circuit 2. In this way, the present invention stores the number of drive pulses that are different between the first current time and the alarm setting time, and substantially controls the number of drive pulses from the second current time. It is a guideline mechanism.

However, an 8Hz drive pulse is used to set the alarm time. This is not limited to 8Hz, it may be a higher frequency such as 64Hz, but if it is too early, it will be difficult for the user to set the alarm time exactly at the desired time, so we chose an appropriate frequency. . The above description has been made for the case where the difference between the alarm time and the alarm time is within one hour. Next, the case where the time from the current time to the alarm time exceeds one hour will be explained.

As shown in FIGS. 2 and 3, during normal operation, the jump brake wheel 10 is held down by the spring force by the jump brake lever 11, so that it does not rotate.

However, by rotating the crown 12, the locking wheel rotates by one degree, and the locking bar 11 cooperates with the pin 32 to generate an hourly digit signal every time the hour hand moves by a unit time. The counter 16 stores this as an hourly time pulse with a different digit from the 8Hz driving pulse described above. Therefore, the user first sets the hour hand 9 to the alarm time using the hour hand independent movement mechanism, and then sets the minute hand 8 and second hand 7 using the aforementioned 8Hz drive pulse.
6 is counted as the total number of drive pulses, and performs a predetermined function. In this way, even if there is a 24 hour difference between the first current time and the alarm setting time, for example, the alarm time can be set in a very short time. After setting the alarm time, the minute hand 8 and second hand 7 start rotating in reverse after a 5-second pause as described above. When the minute hand and second hand have finished reversing, the hour hand 9 is manually reversed using the external operating member to return to the first current time. A signal indicating how many pitches the vehicle control has moved is input to the counter 16,
A correction for the reverse rotation of the hour hand is added. Thus, as described above, the alarm means can be activated at the alarm set time. In one embodiment, an hour hand independent movement mechanism using a planetary gear mechanism has been described, but the present invention is not limited to this, and any structure that allows the hour hand to move independently does not depart from the spirit of the present invention.

It goes without saying that the present invention can also be implemented in a so-called two-hand watch that has only hour and minute hands without a second hand. Furthermore, in the embodiment, the above-mentioned forward rotation and reverse rotation of the display hand have been explained separately, but the present invention is not limited to these directions, and it goes without saying that the forward rotation and reverse rotation can be performed in either direction. As detailed above,
The present invention sets the time from the current time to the alarm setting time by an independent movement mechanism of the hour hand and fast-forward drive of other hands, and eliminates the need for the well-known indicator hand and indicator mechanism, allowing the watch to be made more compact. Furthermore, since the time is set by rotating the crown, it is possible to quickly set the alarm time.

[Brief explanation of the drawing]

FIG. 1 is an external view showing an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is an assembled plan view showing an independent hour hand movement mechanism.
Figure 4 is a block diagram. 1 is an oscillation circuit, 2 is a frequency dividing rotation, 10 is a sardine control wheel, 31 is a hinoku wheel, 24 is a cylinder pinion, 25 is an hour wheel, 11 is a box lever, and 15 and 16 are counter circuits. Mooji Hair Otsuzu Kamami/Kamamizu

Claims (1)

[Claims] 1 Standards for normal movement of the hands in an analog alarm clock in which a low frequency signal obtained by dividing the output of an oscillation circuit by a frequency divider is supplied to a motor via a drive circuit, and the hour and minute hands are operated by a wheel train. the frequency divider circuit that generates a signal and a fast-forward signal for fast-forward movement; a selection circuit that selectively passes one of the two signals to the drive circuit based on external input; and an external input for selecting the fast-forward signal. a counter that starts operating in response to the current time and counts the number of pulses until the pointer reaches the alarm time from the current time;
It consists of a coincidence detection circuit that compares the count value of the counter and the number of pulses of the normal hand movement signal from the current time to the alarm time, and an alarm means connected to the coincidence detection circuit, and a switch means for outputting an output signal every time the hour hand moves for a unit time in conjunction with the operation of the independent hand movement mechanism,
An analog alarm clock characterized in that the unit time signal is input to the counter to count in hourly digits.