JPS6257234B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a timepiece device.

Conventionally, for example, most of the time adjustments in parent-child clocks have been manual or have been adjusted to the hour using a time signal. However, the manual type has the disadvantage that it requires labor, and the one using a time signal has the disadvantage that if an error occurs due to a disturbance immediately after the hour, the correction will not be effective for a long time until the next correction is made. There is.

Further, in any of the above methods, when starting the clock, it is necessary to set the display of each child clock to the time before starting the clock, which is also troublesome.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a timepiece device that constantly compares the time measured by the timer and the displayed time to keep them consistent, thereby eliminating the above-mentioned drawbacks of the conventional technology.

An embodiment of the present invention will be described below based on the drawings. In FIG. 1, 1 is a master clock, and 2, 3, and 4 are registers, which constitute a timekeeping device. 5 is a child clock, and 6 and 7 are minute and hour hands, respectively, which constitute hands. Reference numerals 8 and 9 represent drive devices for the minute hand 6 and hour hand 7, respectively, which are comprised of drive coils for forward rotation and reverse rotation. 10 and 11 are detection devices for detecting the indicated positions of the minute hand 6 and hour hand 7, respectively;
2 and 13 are analog-to-digital converters.
14 and 15 are registers, 16 and 17 are comparison devices,
18...21 are amplifier circuits.

Figure 2 shows the minute detection device, with a disk 22
is provided behind the dial, and the 0, 2,
Thirty reed switches 23 . . . 23 are disposed as detection elements at positions indicating 4...58 minutes, and an indicator hand 25 is fixed to the minute hand shaft 24. This indicator needle 25
A permanent magnet 26 constituting an actuating element is fixed to the tip of the actuator. By aligning the indicated position of the indicator hand 25 with the indicated position of the minute hand 6, when the minute hand 6 indicates 0 minute as shown in the figure, the reed switch 23 located at the 0 minute indicated position opens.
Also, when 1 minute is specified as shown in the third diagram, 0
Reed switch 23 in minute and 2 minute positions,
The width of the permanent magnet 26 is set so that both the needles 23 and 23 open.
4...When 58 minutes is specified, reed switches 23...23 at each indicated position are opened, and 1, 3
...When 59 minutes was specified, each (0,
2), (2,4)...Open the reed switches 23...23 at the indicated positions of (58,0). Then, the output of each reed switch 23...23 is converted into a Z-evolution decimal code output by the converter 13, and the first
It is supplied to the register 15 in the figure. On the other hand, the indicated positions of the clock 7 are similarly detected by installing reed switches at the 0, 2, 4...10 o'clock positions, and by fixing a permanent magnet to the indicator hand fixed to the hour hand shaft. .

Next, the operation will be explained. Time data is generated serially from master clock 1, converted to parallel by register 2, and minute data is generated in register 4.
Then, the hour data is supplied to the register 3. On the other hand, the indicated positions of the minute hand 6 and hour hand 7 of the slave clock 5 are detected by the detection devices 10 and 11, and the output thereof is converted into time data by the conversion devices 12 and 13. This time data is stored in registers 14 and 15, and its output and the outputs of registers 3 and 4 are compared by comparison devices 16 and 17. For example, if the minute hand 6 is advancing, that is, the register 4
When the content of is smaller than the content of the register 15, the output of the comparator 17 is set to generate an output from the amplifier circuit 21, and this output drives the reversing coil of the drive device 8, and the minute hand 6 is reversed. When the indicated position of the minute hand 6 is corrected, that is, when the contents of the register 15 match the contents of the register 4, the output of the comparator 17 is stopped and the minute hand 6 is stopped.

Further, if the minute hand 6 is delayed, that is, if the contents of the register 4 are larger than the contents of the register 15, the output of the comparator 17 is used to control the amplifier circuit 2.
An output is generated from 0, and the minute hand 6 is rotated in the normal direction by the forward rotation coil of the drive device 8 and corrected. That is, in normal times, this operation is performed every time the contents of the register 4 are incremented by one minute, and the minute hand is incremented.

Note that an electrical contact, a light emitting element, and a light receiving element may be used in place of the permanent magnet and reed switch.

Further, in the above embodiment, the indicated position of the minute hand and the clock is detected, but in normal conditions there is almost no error in the hour hand, so the indicated position of only the minute hand may be detected.

As detailed above, according to the present invention, a detection element is provided at every other designated position to detect the display time, and when a working element faces this detection element, only that detection element is activated, and two detection elements are activated. Since these two detection elements are activated when the working element is located between the detection elements, the number of detection elements can be reduced, which is effective in downsizing. Moreover, the accurate time is always displayed, and even if the hands shift due to external disturbances, the time can be immediately corrected. Therefore, especially when used in a parent-child clock that drives a plurality of child clocks, there is no need to synchronize the display time of each child clock even when the child clock is started. Moreover, it is extremely effective in terms of labor saving as it does not require any manual effort even after starting.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, FIG. 2 is a front view showing a part of the detection device, and FIG. 3 is a front view in another operating state of FIG. 2. 1... Master clock, 2, 3, 4... Register, 6,
7... Pointer, 8, 9... Drive device, 10, 11...
...Detection device, 12, 13...Conversion device, 16,1
7... Comparison device, 21... Disk, 22-22...
Reed switch, 24... Indicator needle, 25... Permanent magnet.

Claims (1)

[Claims] 1. A clock device that measures the time, a detection element provided at every other position indicated by a pointer that displays the time,
An actuating element that rotates in conjunction with the pointer and activates only the sensing element when it faces the sensing element, and activates the two sensing elements when it is located between the two sensing elements, and an output of the sensing element. a comparator that compares the coded output from this circuit with the output of the timing device and produces an output when the two outputs do not match, and a comparator that drives the pointer by the output of the comparator. A clock device consisting of a drive device.