JPS602636B2 - time signal clock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timepiece, for example, in which a crystal oscillator (or a commercial frequency as a reference frequency) is used to move hands using a motor to display the time. It is used to accurately signal the hour when children arrive at the hour of their childhood.

First, the structure of a quartz watch using a conventional quartz crystal resonator will be explained.

FIG. 1 shows an example of the structure of the crystal watch. A reference frequency is obtained by a crystal oscillator 1, this frequency is divided by a frequency divider 2 to a desired frequency, and a driving circuit 3 moves a pointer 4 to display the time. 5 is a power source, which uses a battery or a commercial power source.

Further, the crystal oscillator 1 for obtaining the reference frequency uses a commercial frequency of 50.6 kaz. These clocks, which have a relatively accurate reference frequency, became popular as high-precision clocks, that is, standard clocks for households, offices, factories, etc., but these clocks, which were mainly based on electronic circuits, The only means of notification was visually using a guide. At present, the time reporting function using a sound at a fixed time, which existed in mechanical watches, cannot be realized due to the complexity of the function or the complexity of the time detection device. This caused the inconvenience of not being able to tell the time if you were far away from the clock or on the stairs. Therefore, the present invention has a detection device that can accurately detect the set time using a surprisingly simple means, that is, light, light and a magnet, in a watch whose hands are moved by a drive motor using a crystal oscillator or a commercial frequency as a reference frequency, for example. To provide a time signal that can have a time signal function using this signal, and can also obtain a time signal by a method that does not prevent the driving torque of the minute hand or the second hand, which has a particularly weak driving torque. . FIG. 2 shows a block diagram of the configuration of a timepiece according to the present invention.

Reference numeral 11 denotes the above-mentioned timepiece device, and 12 a time signal device, which is composed of a detection device 13, a time signal circuit 14, and a speaker 15, and has a structure in which the entire device is incorporated into a single watch body 10.

FIG. 3 shows a schematic configuration of an example of a watch body 10 according to the present invention, in which a read switch and a light source operated by magnetic force are fixed at position 22 of a scale 21, and a long hand tip 23 is fixed to a position 22 of a scale 21.
This is a structure in which the permanent magnet 24 is fixed and serves as a reflecting section.

Further, the location of the speaker 15 for emitting the time signal sound is not limited to the side surface of the watch body in FIG. 3. The present invention is limited to the fact that when the time is set, that is, 1 o'clock, 2 o'clock, 3 o'clock, etc., the minute hand and the second hand always coincide with the scale of 1 short life at the time of the set time, for example, Moreover, it is possible to accurately detect a time signal even for the second hand, which has a weak driving torque, without weakening the driving torque in any way, and the structure is such that a plurality of detection devices can obtain a time signal.

Examples of the present invention will be described below.

[Example 1] This will be explained with reference to FIG.

A hole 36 is provided at the position of the first scale on the scale plate 31, and a light source 37 and a photodetector 38 are fixed to the scale plate 31 with screws 40 using a jig 39 on the back surface of the scale plate 31.

Further, the permanent magnet 24 is fixed to the long hand 34, while the scale plate 31
A magnetically sensitive switch, ie, a reed switch 24 or a magnetically sensitive element, etc. is fixed at the initial position. When the long hand 34 comes to the 1 position, the reed switch 82 is opened and closed by the magnetic force of the permanent magnet 24 provided on the long hand 34.
You can get the time signal, and then the second hand 35 is connected to the light source 3.
By reflecting the light beam 41 of No. 7, a time signal can be provided to the photodetector 38. That is, when the hour hand and the second hand are at one point, two time signals, one from the clock 34 and the other from the second hand 35, are obtained. Therefore, the above 2
An AND gate circuit or a NAND gate circuit can be constructed and connected to the time signal circuit so that a time signal sound is generated when two signals are input.

Furthermore, in the embodiment described above, only the reflection of the second hand is used to obtain the time signal from the second hand, which has the weakest driving torque.
The driving torque of the second hand is weakened and the time is not inaccurate. As another construction method, first the reed switch 82 is actuated by the long hand 34 to turn on the light source 37 to form the light east 41.

Next, when the second hand reflects the light beam 41 and the photodetector 38 receives the light, it can be configured to issue a time signal. The method described above requires that the minute hand 34 stays near the IJ switch 82 for a long time, and that the reed switch senses a wide range of positions and operates earlier than the second hand 35, so the second hand 35 is not at the one-point life position. You can pay the hourly expenses at the same time as you arrive. With this configuration, the power consumption of the light source 37 can be reduced because it is not necessary to keep the light source 37 on all the time. [Example 2] This will be explained with reference to FIG.

A light source 37 is installed on the scale plate 31 at a position where the second hand passes through the 1-segment scale, and a photodetector 38 is attached to the vulgar smell 51 at a position opposite to this, and is fixed on the scale plate 31 with a screw 52. .

Here, the photodetector detects the light output 53 from the light source 37 from the second hand 3.
5 is installed so that it is blocked. One hour hand 34
A permanent magnet 24 is fixed to the scale plate 31, and a magnetically sensitive switch F is provided at a position facing the permanent magnet 24 at the first position on the scale plate 31. Even in this configuration, the hour hand 3
4 and the second hand 35, and it is necessary to obtain the signal by applying unreasonable force to the second hand, which has a weak driving torque. [Embodiment 3] This will be explained with reference to FIG.

The construction method for the light sensor 37 and the photodetector 38 is the same as that shown in FIG.

The magnetically sensitive switch 82 is provided on the scale plate 31, and the long hand 3
A permanent magnet 24 is fixed to 4. The operating method is the same as in the first embodiment. Next, a time signal circuit 1 which generates a time signal according to the time signal from the time detection device 13 according to the present invention.
4 will be explained with reference to FIG.

The signal obtained by the time detection device 13 enters a switching circuit 91 that removes noise, becomes a one-shot pulse, and enters a counter 92 and a pulse train generator 93.

The counter 92 counts only one signal that comes in every hour, and the comparator 94 and pulse train generator 93 output one time signal at the first count, that is, notify that it is 1 o'clock. Next, when the second signal is input, the counter 92 counts 2, and the comparator 94 compares it with the contents of the pulse train generator 93, and outputs two time signals. In other words, it informs you that it is 2 o'clock. When the 13th signal is input, the contents of the counter 92 are all reset and counted to 1, and the pulse train generator 93 outputs one signal.

Note that the time signal from the pulse train generator 93 is in the form of pulses, so if you listen to this signal sound directly through a speaker, it will give a sense of uncertainty. generate sound. Furthermore, although the time reporting by sound has been described above, the light is not limited to blue, and may be configured to emit light in the dining room or other areas where sound is a problem.

As described above, the time signal clock of the present invention is capable of reliably obtaining a regular time signal every hour, for example, by using a detection device using a light or a magnet attached to the child's position.

'2} Also, since the configuration using a light source and a photodetector does not apply unnecessary external force to the hands, the time indicated by the watch will not be disturbed.

{3} Moreover, when the long hand and second hand match the 1-year scale, the high precision of the crystal clock can be utilized to emit a time signal at the same time without applying any external force to the second hand.

Furthermore, in the case of light detection, since the light source is not turned on all the time, the life of the light source is not only significantly extended, but also the power consumption of the power supply is drastically reduced, so a dry cell with a small capacity can be used satisfactorily.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a block diagram of a secondary crystal clock, Fig. 2 is a block diagram of a time signal clock according to the present invention, and Fig. 3 is a schematic front view of the external appearance of the time report clock according to the present invention. 4 to 6 are cross-sectional configuration diagrams of each embodiment of the time detection device in the time signal watch of the present invention, and FIG. 7 is a block configuration diagram of the time signal circuit in the time signal watch of the present invention. 1... Crystal resonator, 2... Frequency divider, 3... Drive circuit, 12
...Time signal device, 13...Detection device, 14...Time signal circuit, 15...Speaker, 24...Magnet, 31...Scale plate, 32...Drive device, 33...Hour hand (hour hand), 23 ,34・
...Long hand (minute hand), 35...Second hand, 37...Light source, 38
...Photodetector, 82...Magnetically sensitive switch. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. A time display scale, a drive device that drives the hands and has an electronic circuit for time display, a light source and a photodetector installed at predetermined positions on the scale plate, and a sensor installed on the scale plate. The magnetic switch and the magnet installed in the long hand of the above-mentioned pointer, the above-mentioned photodetector and the sensor when the above-mentioned magnetically sensitive switch and the magnet of the above-mentioned long hand overlap, and when the second hand of the above-mentioned pointer blocks the luminous flux of the light source. A time signal clock comprising a time signal device that emits a time signal based on at least two signals from a magnetic switch.