KR20000035637A - Automatic correctable timepiece - Google Patents

Abstract

PURPOSE: An automatic correction watch is provided to realize a small size and a low cost, and to perform a correction in a high accuracy and rapidly. CONSTITUTION: An automatic correction watch comprises a first drive unit(20) which drives a second hand. A second drive unit(30) drives the second drive unit(30) drives a minute hand and an hour hand. A light detection sensor(40) is a light penetration type, and detects positions of the second hand, the minute hand and the hour hand. A manual correction unit(50) makes a user adjust the time of day. A control part receives a standard time radio wave from a radio station, and controls a reset operation on the basis of the received signal. The first drive unit(20) and the second drive unit(30) are simultaneously driven according to the control of the control part so that a time of the second hand and a time of the minute hand are corrected.

Description

Auto Correct Watch {AUTOMATIC CORRECTABLE TIMEPIECE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-correcting clock that receives a time signal such as a time signal and corrects the time.

Of the self-correcting clocks, the radio wave-correcting clock receives a standard time radio wave (JG2AS), which is a long wave (40 kHz) that transmits a predetermined frequency transmitted from a radio station, for example, Japan Standard Time, with high precision. A reset to so-called zero is performed on the basis of the received signal, and a pointer position detection device is provided in order to precisely adjust the position of the pointer at the right time and the like at the time of reset to zero.

As a conventional radio wave correcting watch provided with this guide position detecting device, those described in JP-A-6-222164, JP-A-6-30793, and the like are known. The radio wave correction watch disclosed in these publications includes a first drive device for rotating the second hand gear, a second drive device for rotating the minute hand gear and the hour hand gear, a first light reflection type sensor for detecting the position of the second hand, a minute hand, and A second light reflection type sensor or the like for detecting the position of the hour hand is provided.

The first light reflection type sensor and the second light reflection type sensor are each formed of a light emitting element and a light receiving element, and each of the detection holes formed in the intermediate gear and the hour hand gear constituting the first drive device, and the second hand. When the light reflecting portions respectively formed on the gears and the rotating plate separately provided coincide with each other, the light receiving element receives the light emitted from the light emitting element and detects the guide position.

It is also known to use a light transmissive sensor in place of the light reflective sensor as the optical sensor. In the radio wave correction clock using the light transmitting type sensor, a transmission hole is formed in the gear constituting the drive device for driving the second hand, the gear constituting the minute hand, and the drive device for driving the hour hand, and the light emitting element and The light receiving element is opposed to each other, and each light emitting element is opposed to each other so that light emitted from the light emitting element is received by the light receiving element to detect the guide position.

However, there existed the following problem in the radio wave correction clock provided with the above-mentioned guide position detection apparatus. In other words, when the light detection sensor is provided separately from the light detection sensor corresponding to the drive device for driving the second hand and the light detection sensor corresponding to the drive device for driving the minute hand and the hour hand, respectively, the space of two light detection sensors is provided. This necessitated a problem that the apparatus was enlarged and the cost was high.

In addition, when unification of the optical detection sensor is provided in the state in which two driving devices are provided, each motor or the like of the two driving devices for driving the guideline rotates due to shock or other external factors, respectively, to prevent phase shift. When it produced, the operation | movement which matches these phases is needed, As a result, there existed a problem that the time to detect the position of a guideline became long. In addition, in the case where the conventional detection holes are provided, there is a problem that it takes time until all the detection holes coincide, and similarly, a long time is required for the position detection of the guideline.

In addition, in the case of using the light transmitting sensor as the light detection sensor, the distance between the light emitting element and the light receiving element becomes long, and the light emitted from the light emitting element may gradually spread, resulting in misdetection. There was also a problem that was easy to cause.

Furthermore, after assembling, when a hole is drilled in the case so that the markings and the like engraved in the gears stored therein can be confirmed in order to obtain an approximate time minute, dust or the like penetrates from this hole, and There is a problem that external light penetrates and causes false detection.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a self-correcting clock capable of time correction with high accuracy and speed while miniaturizing and reducing the cost of the device. have.

1 is a plan view showing one embodiment of an automatic quartz watch according to the present invention.

2 is a longitudinal sectional view showing one embodiment of an automatic quartz watch according to the present invention.

3 is a plan view showing a first drive device for driving a second hand that is part of an automatic quartz watch;

4 is a plan view showing a second driving device for driving the minute and hour hands that are part of the self-correcting clock;

FIG. 5 is a plan view showing a first fifth gear that forms part of a first drive device for driving the second hand; FIG.

6 is a plan view showing a second hand gear that forms part of a first drive device for driving the second hand;

7 is a plan view showing another example of the second hand gear that forms part of the first driving device for driving the second hand;

8 is a plan view showing a third gear that forms part of a second drive device for driving the minute and hour hands;

9 is a plan view of a minute hand gear that forms part of a second drive device for driving the minute hand and the hour hand;

10 is a plan view of a hour hand gear that forms part of a second drive device for driving the minute and hour hands;

11 is a cross-sectional view showing the tip portions of the minute hand pipe and the hour hand pipe.

Fig. 12 is a flowchart showing an operation in the case where correction driving of time is performed in the automatic correction clock.

FIG. 13 is a graph showing the output pattern of the detection means by the combination of the minute hand gear, the hour hand gear, and both in the correction drive shown in FIG. 12; FIG.

Fig. 14 is a flowchart showing another operation when time correction driving is performed in the automatic correction clock.

<Explanation of symbols for main parts of drawing>

10: clock body

11: lower case (second case)

11c: mounting recessed portion (second placement portion)

11d: circular through hole

12: upper case (first case)

12c: mounting recessed portion (first placement portion)

12d: circular through hole

13: inner plate

20: first driving device

21: first stepping motor (first drive source)

22: first fifth gear (first transmission gear, first detection gear)

22c: through hole

23: second hand gear (second detection gear, first guide gear)

23c: through hole

23d: positioning light shield

23e: bias spring

23f: notch hole

23g: notch hole

30: second drive device

31: second stepping motor (second drive source)

32: second fifth gear

33: third gear (second transmission gear, third detection gear)

33c: through hole

34: minute hand gear (fourth detection gear, second guide gear)

34c: circular through hole

34d: circular through hole

34e: circular through hole

34g: home (first indicator)

34p: minute hand pipe

35: Miniature Gear

36: hour hand gear (fifth detection gear, second guide gear)

36c: circular arc through hole

36d: circular arc through hole

36e: circular through hole

36g: home (second index)

36p: hour hand pipe

40: light detection sensor (detection means)

42: light emitting element

44: light receiving element

50: manual correction device

MEANS TO SOLVE THE PROBLEM As a result of earnestly examining in order to achieve the said objective, this inventor came to discover the invention which comprises the following structures.

That is, the self-correcting watch of the present invention includes a first drive device for driving the first guideline, a second drive device for driving the second guideline, a first guide gear directly connected to the first guideline, and the second guideline. A detecting means for detecting that the second guide gear directly connected is located at a position corresponding to a predetermined time on the basis of the time signal, and a control unit controlling an operation of correcting to a predetermined time based on the output signal and the time signal of the detecting means. And an automatic correction clock for automatically correcting time, wherein the control unit simultaneously drives the first driving device and the second driving device to perform the time correction of the first guideline and the time correction of the second guideline. It is characterized by.

In the self-correcting clock of the above configuration, the first drive device includes a first stepping motor, a first transmission gear rotated and driven by the first stepping motor, and a second hand engaged with the first transmission gear. The second drive device includes a gear, a second stepping motor, a second transmission gear that is rotationally driven by the second stepping motor, a minute hand gear engaged with the second transmission gear, and interlocking with the minute hand gear. And a hour hand gear that is rotationally driven, wherein the control unit drives the first stepping motor and the second stepping motor at the same output frequency, and one side of the first transmission gear and the second transmission gear is the motor. Has a plurality of transmission holes formed to turn on the output of the detection means when the number of output pulses is odd, and the other of the first transmission gear and the second transmission gear The number of the output pulses may be employed a configuration having a plurality of through holes formed to the output of said detecting means is turned on when the even number without a common factor between the said odd.

In the self-correcting watch of the present invention, the first guide gear directly connected to the first guideline and the second guide gear directly connected to the second guideline are positioned at positions corresponding to a predetermined time based on the time signal to automatically correct the time. At this time, when the controller receives the visual signal, the controller simultaneously drives the first driving device for driving the first guideline and the second driving device for driving the second guideline. When the time correction of the first guideline and the time correction of the second guideline are finished, the control unit stops the driving operation of each of the first drive device and the second drive device.

In the self-correcting clock of the above configuration, the first drive device includes a first stepping motor, a first transmission gear rotated and driven by the first stepping motor, and a second hand gear meshed with the first transmission gear, and the second When the drive device includes a second stepping motor, a second transmission gear that is rotationally driven by the second stepping motor, a minute hand gear meshed with the second transmission gear, and an hour hand gear that is rotationally driven in conjunction with the minute hand gear, The control unit drives the first stepping motor and the second stepping motor at the same output frequency to control rotation of one of the first transmission gear and the second transmission gear so that the output of the detection means is turned on when the number of output pulses of the motor is odd. Then, the other side of the first transmission gear and the second transmission gear are rotationally controlled so that the output of the detection means is turned on when the number of output pulses of the motor is an even number with no odd number between odd numbers.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on an accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing one embodiment of a guide position detection device in a radio wave correction clock, among the automatic quartz watches according to the present invention, and Fig. 2 is a longitudinal sectional view of this guide position detection device. In the clock main body 10, the radio wave correction clock which concerns on this embodiment is the 1st drive apparatus 20 which drives the second hand which is a guide, the 2nd drive apparatus 30 which drives the minute hand and hour hand which are guides, and the second hand. , A light transmission type light detection sensor 40 for detecting the position of the minute hand and the hour hand, a manual correction device 50 for directing the user's time by hand, and a predetermined frequency transmitted from a radio station, for example, Japan Standard Time, with high precision. A control unit (not shown) for receiving a standard time radio wave (JG2AS), which is a long wave (40 kHz) to be transmitted, and controlling when performing so-called reset to zero based on the received signal is provided. .

The watch body 10 is formed of a lower case 11 as a second case and an upper case 12 as a first case, and a lower case 11 and an upper case 12 that are connected to each other to form an outline. The inner plate 13 which is arranged in a substantially central portion in the space and connected to the lower case 11 is provided, and the predetermined positions of the lower case 11, the inner plate 13 and the upper case 12 in the space are provided. The first drive device 20, the second drive device 30, the optical detection sensor 40, the manual correction device 50, the control unit and the like are fixed or pivotally supported.

As shown in Figs. 1 to 3, the first drive device 20 has a substantially U-shaped stator 21a, a drive coil 21b wound around one leg member of the stator 21a, and the stator 21a. A large diameter gear is formed on the first stepping motor 21 constituted by the rotor 21c rotatably disposed between the other magnetic poles and the pinion 21c 'of the rotor 21c. First fifth gear 22 as the first transmission gear (first detection gear) meshed with 22a, and second detection gear meshed with the small-diameter gear 22b of the first fifth gear 22. It consists of the second hand gear 23 as (1st guide gear).

Here, in the first stepping motor 21, the stator 21a is fixed to the inner plate 13, and the rotor 21c is pivotally supported on the inner plate 13 and the upper case 12. Based on the output control signal, its rotation direction, rotation angle and rotation speed are controlled.

The first fifth gear 22 is formed with 60 teeth on the large-diameter gear 22a and 15 teeth on the small-diameter gear 22b, and is pivotally supported on the lower case 11 and the upper case 12 by rotation. The large diameter gear 22a meshes with the rotor 21c (pinion 21c ') of the first stepping motor 21 to reduce the rotational speed of the rotor 21c at a predetermined speed. As shown in FIGS. 3 and 5, the first fifth gear 22 forms three circles arranged at equal intervals (center angle α1 is 120 °) in the circumferential direction in the region overlapping with the second hand gear 23. The through hole 22c is formed. This transmission hole 22c not only passes the detection light of the light detection sensor 40, but at least one is used as a positioning hole (angle determination hole) when assembling the first fifth gear 22.

The second hand gear 23 is formed with 60 teeth of the large-diameter gear 23a, one end of the shaft portion being pivotally supported by the upper case 12, and the other end side of the inner plate 13 penetrated toward the lower case 11 side. The second hand shaft 23b is press-fitted, and the second hand shaft 23b is inserted into the minute hand pipe 34p to be described later, and a second hand (not shown) is attached to the tip. As shown in Fig. 6, the second hand gear 23 has eleven circles arranged at equal intervals (center angle? 2 at 30 °) in the circumferential direction in a region overlapping with the first fifth gear 22 by rotation. The positioning light shielding portion 23d (the center angle between the transmitting hole 23c and the transmitting hole 23c is 60 degrees) is formed in which the transmission hole 23c and only one pitch differ. The second hand is configured to point in time when the transmission hole 22c of the first fifth gear 22 is opposed to the transmission hole 23c for the first time after facing the positioning light shielding portion 23d.

The transmission hole 23c not only passes the detection light of the light detection sensor 40 but also at least one of them is used as a positioning hole (angle determination hole) when assembling the second hand gear 23.

Further, inside these transmission holes 23c, an arc-shaped bias spring 23e which is long in the circumferential direction and protrudes in the rotational axis direction is partitioned by the notch holes 23f. The circular arc biasing spring 23e biases the second hand gear 23 in the rotation axis direction.

Here, the positioning light shielding portion 23d is formed at a position away from the cutout hole 23f in the circumferential direction, that is, an area where two cutout holes 23f are cut off in the middle. Therefore, since the distance between the cutout hole 23f and the positioning light shielding portion 23e can be sufficiently secured, the detection light does not return to the notch hole 23f in the region of the positioning light shielding portion 23d. The detection light shielding portion 23d can block the detection light. That is, since the positioning light shielding portion 23d is formed at a position away from the region in which the cutout hole 23f which is easy to cause false detection as the detection light returns is formed, the positioning light shielding portion 23d is moved to the second hand gear ( The positioning can be reliably performed by using for positioning of the rotation angle position of 22).

In the second hand gear 22, as shown in FIG. 6, instead of providing a plurality of 11 (11) transmission holes 23c, as shown in FIG. 7, the positioning light shield 23d and the radial direction The other transmission holes 23c may be integrally drilled with the cutout holes 23g, respectively, leaving only the transmission holes 23c at positions opposing each other. According to this, the passage of detection light can be more reliably made in the part which allows passage of detection light, and the waste of the material which forms the second hand gear 22 can be reduced.

As shown in Figs. 1, 2 and 4, the second drive device 30 has a substantially U-shaped stator 31a, a drive coil 31b wound around one leg member of the stator 31a, and the stator. The large diameter gear 32a is attached to the second stepping motor 31 constituted by the rotor 31c rotatably disposed between the other magnetic poles of the 31a and the pinion 31c 'of the rotor 31c. Third gear (32) as a second transmission gear (third detection gear) in which a large diameter gear (33a) meshes with a second diameter gear (32) as an interlocking intermediate gear and a small diameter gear (32b) of the second fifth gear (32). 33, a third gear, a minute hand gear 34 as a fourth detection gear (second guide gear) in which the large-diameter gear 34a meshes with the small-diameter gear 33b of the third gear 33, and the minute hand gear ( Minute gear 35 serving as an intermediate gear in which the large-diameter gear 35a is meshed with the small-diameter gear 34b of 34, and the fifth detection vessel engaged with the small-diameter gear 35b of the small gear 35. It is composed of a hour hand gear 36 as the (second gear instructions).

Here, in the second stepping motor 31, the stator 31a is fixed to the inner plate 13, and the rotor 31c is pivotally supported on the inner plate 13 and the upper case 12. The rotation direction, rotation angle and rotation speed are controlled based on the output control signal.

The second fifth gear 32 is formed with 60 teeth on the large-diameter gear 32a and 15 teeth on the small-diameter gear 32b. The second fifth gear 32 is pivotally supported on the inner plate 13 and the upper case 12. The gear 32a meshes with the rotor 31c (pinion 31c ') of the second stepping motor 31 to reduce the rotational speed of the rotor 31c to a predetermined speed. As the second fifth gear 32, the first fifth gear 22 described above may be useful, that is, one provided with a transmission hole 22c. As a result, the parts can be shared, and the cost of the product can be reduced.

The third gear 33 has 60 teeth of the large-diameter gear 33a and 10 teeth of the small-diameter gear 33b, one end of the shaft portion is pivotally supported by the upper case 12, and the other end side of the inner plate ( It is arrange | positioned rotatably in the state which penetrated 13, and decelerates rotation of the 2nd fifth gear 32, and transmits it to the minute hand gear 34. As shown in FIG. In addition, as shown in Fig. 8, the third gear 33 is rotated at equal intervals (center angle? 3 is 36 °) in the circumferential direction in the region overlapping with the second hand gear 23 and the first fifth gear 22 by rotation. Ten circularly formed through holes 33c are formed. This transmission hole 33c not only passes the detection light of the light detection sensor 40 but also at least one of them is used as a positioning hole (angle determination hole) when assembling the third gear 33.

The minute hand gear 34 has 60 teeth of the large diameter gear 34a and 14 teeth of the small diameter gear 34b, and the minute hand pipe 34p in which the small diameter gear 34b was integrally formed in the center part is a side surface. It is formed so as to form approximately T shape. One end of the minute hand pipe 34p is pivotally supported by the inner plate 13, and the shaft portion of the other end side is rotatably inserted into the inside of the hour hand pipe 36p of the hour hand gear 36 to be described later. have. Further, the minute hand pipe 34p penetrates through the lower case 11 and protrudes toward the clock face (not shown), and a minute hand (not shown) is attached to the front end thereof.

In addition, as shown in FIG. 9, the minute hand gear 34 has three circular arc-like transmissions in the circumferential direction in the region overlapping with the second hand gear 23, the first fifth gear 22, and the third gear 33 by rotation. Holes 34c, 34d and 34e are formed. These arcuate transmission holes 34c and the arcuate transmission holes 34d are formed to be separated by 30 ° at the center angle α5, and the arcuate transmission holes 34d and the arcuate transmission holes 34e are formed at the center angle α6. It is formed 30 degrees apart, and the circular arc through hole 34e and the circular arc through hole 34c are formed 60 degrees apart by the center angle (alpha) 7. That is, the widest light shielding portion A is formed between the arcuate transmission hole 34e and the arcuate transmission hole 34c, and the arcuate transmission hole 34c and the arcuate transmission hole 34d and The light shielding portion B, which is narrower than the light shielding portion A, is formed between and between the circular arc-shaped transmission hole 34d and the circular arc-shaped transmission hole 34e.

Further, the circular arc-shaped through hole 34c has a circular portion 34c 'on one end side, a wide circular arc portion 34c' 'extending from the other end side, and a narrow circular arc portion 34c' connecting the two. ''). The circular portion 34c 'partitioned by the narrow circular arc portion 34c' '' not only passes the detection light but also serves as a positioning hole (angle determination hole) when assembling the minute hand gear 34. Will be.

The hour hand gear 36 has 40 teeth of the large-diameter gear 36a, and a cylindrical hour hand pipe 36p is integrally attached to the center portion thereof, and the minute hand pipe described above is provided inside the hour hand pipe 36p. 34p is penetrated. And the hour hand pipe 36p is pivotally pivotally supported by being inserted into the bearing hole 11a formed in the lower case 11, and the front end side penetrates the lower case 11, and the clock face (shown) is shown. (Not shown) is attached to the tip.

Moreover, as shown in FIG. 10, the hour hand gear 36 rotates in the circumferential direction in the area | region which overlaps with the second hand gear 23, the 1st fifth gear 22, the 3rd gear 33, and the minute hand gear 34 by rotation. Three elongated circular arc through holes 36c, 36d, and 36e are formed. These arcuate transmission holes 36c and arcuate transmission holes 36d are formed 45 degrees apart from the center angle α8, and the arcuate transmission holes 36d and the arcuate transmission holes 36e are formed at the center angle α9. The arcuate transmission hole 36e and the arcuate transmission hole 36c are formed so as to be spaced apart from each other by 60 °, and the arcuate transmission hole 36c is formed to be spaced apart by 30 ° at the center angle α10. Furthermore, the arcuate transmission holes 36c, 36d, and 36e are formed. ) Is set so that the center angles β1 + β2, β3, β4 are 75 °, 60 °, and 90 °, respectively. That is, the narrowest light shielding portion C is formed between the arcuate transmission hole 36e and the arcuate transmission hole 36c, and the arcuate transmission hole 36c and the arcuate transmission hole 36d are formed. The light-shielding portion D, which is wider than the light-shielding portion C, is formed between the gaps, and the difference is wider than the light-shielding portion D between the arc-shaped transmission hole 36d and the arc-shaped transmission hole 36e. The miner E is formed.

Further, the circular arc through hole 36c includes a circular portion 36c 'located at a position of 7.5 ° from the one end side to a center angle β1, a wide circular arc portion 36c' 'extending from the other end side, and both. Is formed by a narrow circular arc portion 36c '' 'located at both sides of the circular portion 36c'. The circular portion 36c 'partitioned by the narrow circular arc portion 36c' '' not only passes detection light but also serves as a positioning hole (angle determining hole) when assembling the hour hand gear 36. Will be.

The miniature gear 35 has 42 teeth of the large-diameter gear 35a and 10 teeth of the small-diameter gear 35b, and is pivotally supported rotatably with respect to the protrusion 11b formed in the lower case 11. The large diameter gear 35a is engaged with the small diameter gear 34b formed in the minute hand pipe 34p, and the small diameter gear 35b is engaged with the hour hand gears 36 and 36a to rotate the minute hand gear 34. Deceleration is transmitted to the hour hand gear 36.

As shown in FIG. 2, the light detecting sensor 40 includes a light emitting element 42 made of a light emitting diode attached to a circuit board 41 fixed to a wall surface of an upper case 12, and a light emitting element 42. It is formed by the light receiving element 44 which consists of a photo transistor attached to the circuit board 43 fixed to the wall surface of the lower case 11 so that it may face. The light emitting element 42 and the light receiving element 44 are connected to a control unit (not shown) provided on the circuit board to transmit various detection signals, control signals, and the like.

Moreover, as shown in FIG. 1, it arrange | positions in the position where all the 1st fifth gear 22, the second hand gear 23, the third gear 33, the minute hand 34, and the hour hand gear 36 overlap simultaneously. It is. Then, the transmission hole 22c of the first fifth gear 22, the transmission hole 33c of the third gear 33, the transmission hole 23c of the second hand gear 23, and the transmission holes 34c and 34d of the minute hand gear 23. When the transmission holes 36c (36d, 36e) of the hour hand gear 36 overlap each other, the detection light emitted from the light emitting element 42 is received by the light receiving element 44, and the second and minute hands Is output to indicate the hour hand indicating the position of the hour or the like.

In addition, the light emitting element 42 is disposed in the attachment recess 12c as the first placement portion formed to open to the outside of the upper case 12, and the bottom surface of the attachment recess 12c has a circular shape of a predetermined diameter. The through hole 12d is drilled. Since the circular through hole 12d has a property of being spread in a form in which the detection light emitted from the light emitting element 42 gradually spreads, the circular through hole 12d blocks the light in the widened portion and passes only the converged light to prevent false detection. To make it possible. Similarly, the light receiving element 44 is disposed in the attachment recess 11c as the second placement portion formed to open to the outside of the lower case 11, and the bottom surface of the attachment recess 11c has a circular shape of a predetermined diameter. The through hole 11d is drilled. This circular through hole 11d emits light from the light emitting element 42, and passes only the light that has passed through the transmission hole as much as possible to prevent false detection.

When assembling the first fifth gear 22, the third gear 33, the second hand gear 23, the minute hand 34, and the hour hand gear 36, a predetermined positioning pin is formed on the lower case 11. It assembles in order so that the circular through hole 11d, each penetration hole used for positioning, and the circular through hole 12d of the upper case 12 may penetrate. After the upper case 12 and the lower case 11 are joined and integrated, the positioning pin is pulled out, and the light emitting element 42 is attached to the mounting recess 12c in which the through hole 12d is located. Moreover, the light receiving element 44 is attached to the attachment recessed part 11c in which the through hole 11d is located.

As a result, the through holes 12d and 11d are completely closed, and it is possible to prevent external light from entering the internal space partitioned by the upper case 12 and the lower case 11. Therefore, it is possible to prevent erroneous detection due to invasion of external light, and at the same time, it uses both the positioning hole at the time of assembly and the transmission hole for light detection. Therefore, the device is more compact than the case where these holes are provided separately. Miniaturization can be achieved.

As shown in FIGS. 1 and 2, the manual correction device 50 engages the miniature gear 35 that meshes with the small diameter gear 34b of the minute hand gear 34 and the large diameter gear 36a of the hour hand gear 36 described above. ) And a manual correction shaft 51 having a gear 51a meshed with the large-diameter gear 35a of the miniature gear 35. The manual correction shaft 51 is located outside the upper case 12 so that the user can directly touch the finger, and an opening formed in the upper case 12 that extends from the head 51b. It is made up of a columnar portion 51c inserted into the 12e and pivotally supported with respect to the protrusion 11e formed on the lower case 11, and a gear 51a is formed in the lower region of the columnar portion 51c. It is.

The manual correction shaft 51 is configured to rotate in the same phase as the minute hand gear 34. When the minute hand gear 34 is driven by the above-described second drive device 30, the manual gear shaft 35 is rotated. It rotates in the same phase as the minute hand gear 34, and rotates the head part 51b with a finger at the time of the non-operation of the 2nd drive device 30, and it is possible to manually correct a guide position.

As described above, the second hand shaft 23b of the second hand gear 23 is inserted into the minute hand pipe 34p of the minute hand gear 34, and the minute hand pipe 34p of the minute hand gear 34 passes through the hour hand gear 36. Since the second hand gear 23, the minute hand gear 34, and the hour hand gear 36 each have a common rotation center axis, they are inserted through the hour hand pipe 36p. The second hand is driven to rotate one time in 60 seconds, the minute hand to one revolution in 60 minutes, and the hour hand to one revolution in 12 hours.

At the tip of the minute hand pipe 34p of the minute hand gear 34 and the tip of the hour hand pipe 36p of the hour hand gear 36, as shown in FIG. The groove 34g as the first indicator and the groove 36g as the second indicator are formed. And when these groove | channel 34g and the groove | channel 36g are located side by side, it is set so that it may point to predetermined time, for example, 12:00.

By providing such positioning indicators, the grooves 34g and 36g are positioned side by side even after the minute hand gear 34 and the hour hand gear 36 are surrounded and covered by the lower case 11 and the upper case 12. In this case, it is possible to easily indicate that the point of time is set in advance, so that the minute and hour hands can be easily attached on the basis of the state, and other positioning and positioning steps are unnecessary. It is possible to shorten the manufacturing time and the inspection time in. The positioning index is not limited to the above-described grooves, but may be a mark such as a small dot.

Next, the time correction operation of the radio wave correction clock will be described.

12 shows an example of the time correction operation. Here, the first fifth gear 22, the second hand gear 23, the third gear 33, the minute hand 34, and the hour hand gear 36 are respectively controlled by the control unit, the first stepping motor 21 and the second. It is rotationally driven by step driving of the stepping motor 31. At this time, the first fifth gear 22 is driven to be controlled to rotate one step in 15 steps by the step driving of the first stepping motor 21, and as a result, the second hand gear 23 rotates one step in 60 steps. On the other hand, the third gear 33 is driven to be controlled to rotate one step in 60 steps by the step driving of the second stepping motor 31, and as a result, the minute hand gear 34 rotates one step in 360 steps and the hour hand gear ( 36) rotates once in 4320 steps.

As shown in Fig. 12, at the time of reset or power-on, the start switch is turned on, and the light emitting element 42, that is, the light emitting diode is started at a predetermined output frequency and emits detection light (S1). Subsequently, the first stepping motor 21 is pulse driven (S2), and a determination is made as to whether or not there is an output from the light receiving element 44, that is, the phototransistor (S3).

If there is no output from the photo transistor, a determination is made as to whether or not there is an output from the photo transistor every time the number of pulses for performing step driving is added (S4). When there is no output from the transistor, the second stepping motor 31 is driven one step (pulse) (S5), and then the first stepping motor 21 is stepped again (S2) and the second hand gear 23 is driven. Rotationally driven.

On the other hand, when there is an output of the phototransistor, the second hand gear 23 is quickly wound up (S6), a comparison with the output pattern previously stored in the control unit is performed (S7), and the obtained output pattern and the stored output pattern are suitable. If not, the second hand gear 23 is quickly wound up again. On the other hand, when the obtained output pattern and the stored output pattern are suitable, the second hand gear 23 is stopped at that point (the point in time when the output of the phototransistor is obtained next time if the output from the phototransistor cannot be obtained even in the fifth step). (The first stepping motor 21 is stopped) and the second hand gear 23 is driven to the position which resets to 0, and it stops (S8). At this time, the second hand is corrected to a position at a predetermined time, for example, the hour (0 second).

Subsequently, only the second stepping motor 31 is pulsed at a predetermined output frequency to quickly wind the minute hand gear 34 (S9). Then, a comparison between the output pattern from the photo transistor and the output pattern stored in advance in the controller is performed (S10), and when the obtained output pattern and the stored output pattern are not suitable, the minute hand gear 34 is quickly wound again. . On the other hand, when the obtained output pattern and the stored output pattern are suitable, the second stepping motor 31 is stopped at that time, and the driving of the minute hand gear 34 and the hour hand gear 36 is stopped (S11).

Here, the time correction by comparing the output pattern with the previously stored pattern is performed by fitting to any one of three types of patterns. That is, as shown in Fig. 13A, the output pattern of the phototransistor by the minute hand gear 34 is an off width at which the light shielding portion acts, and the two narrow B portions and the one wide width are shown. The A part becomes an alternating pattern, and the output pattern of the photo transistor by the hour hand gear 36 has three kinds of D part, E part, The C part is alternately patterned at predetermined intervals, and the combined output pattern is a pattern in which the D part, the B part, and the A part are combined, and the E part, the B part, and the A part, as shown in Fig. 13C. Three types of the combined pattern and the pattern in which the C portion, the B portion, and the A portion are combined form a pattern appearing at a predetermined interval. In addition, since the pattern part which turns on among the patterns shown in FIG. 13 actually turns off by the light shielding part of the 3rd gear 33, it is a pattern of the tooth missing form.

Thus, when a pattern composed of a combination of D, B, and A portions is confirmed, for example, 4:00, when a pattern composed of a combination of E, B, and A portions is confirmed, for example, 8:00, When the pattern consisting of the combination of the C part, the B part and the A part is confirmed, for example, at 12: 00, the minute hand gear is stopped by stopping the second stepping motor 31 when any one of these patterns is detected. 34 and the hour hand gear 36, that is, the minute hand and the hour hand, can be time-corrected at a predetermined time.

After stopping the second stepping motor 31, the output of the light emitting diode is turned off to stop light emission (S12), and the time correction operation is finished.

According to the radio wave correcting clock which performs the said operation, since the circular hole transmission hole, ie, a long hole, is used as a transmission hole for passing detection light to the minute hand gear 34 and the hour hand gear 36, a light detection sensor ( The range at which 40) turns on becomes wider, and the position detection time can be shortened. As a result, the time for correcting the time of the second hand can be shortened. In addition, since three kinds of light shielding portions C, D, and E are provided in the hour hand gear 36, any one of the three locations can be detected to correct the time, and the hour hand gear having the slowest rotation speed ( The position can be detected by only rotating the reference numeral 36) by approximately 1/3 as compared with the related art, and accordingly, the time for correcting the time of minute and hour hands can be shortened.

Next, another time correction operation in the radio wave correction clock will be described.

14 shows another embodiment of the time correction operation. Here, the first fifth gear 22, the second hand gear 23, the third gear 33, the minute hand 34, and the hour hand gear 36 are first steppings controlled by the controller, respectively, as in the above-described driving method. It is rotationally driven by step driving of the motor 21 and the second stepping motor 31. At this time, the first fifth gear 22 is driven and controlled to rotate one step in 15 steps by the step driving of the first stepping motor 21, and as a result, the second hand gear 23 rotates one step in 60 steps. On the other hand, the third gear 33 is driven to be controlled to rotate one step in 60 steps by the step driving of the second stepping motor 31. As a result, the minute hand gear 34 rotates one step in 360 steps and the hour hand gear 36 ) Rotates once in 4320 steps. In this case, the first fifth gear 22 passes the detection light once every five steps of driving by the first stepping motor 21, and the third gear 33 passes through the second stepping motor 31. Thus, the detection light is made to pass once per six steps of driving.

As shown in Fig. 14, at the time of reset or power-on, the start switch is turned on, and the light emitting element 42, that is, the light emitting diode is activated to emit the detection light (S1). Subsequently, the first stepping motor 21 and the second stepping motor 31 are pulse-driven at the same output frequency simultaneously, and the second hand gear 23 and the minute hand gear 34 (and the hour hand gear 36) are rotationally driven. (S2). Next, a determination is made as to whether or not there is an output from the light receiving element 44, that is, the phototransistor (S3).

Here, when there is no output from the photo transistor, the first stepping motor 21 and the second stepping motor 31 are pulsed again, and the second hand gear 23 and the minute hand gear 34 (and the hour hand gear 36) are again driven. ] Is driven to rotate. On the other hand, when there is an output from the photo transistor, the second hand gear 23 and the minute hand gear 34 (the hour hand gear 36) are stopped once (S4), after which the second hand gear 23 is wound up quickly. (S5), a comparison with the output pattern previously stored in the control unit is performed (S6), and when the obtained output pattern and the stored output pattern are not suitable, the second hand gear 23 is quickly wound again. On the other hand, when the obtained output pattern and the stored output pattern are suitable, the second hand gear 23 is stopped (the first stepping motor 21 is stopped) at that point, and the second hand gear 23 is reset to zero. Drive to stop (S7). At this time, the second hand is corrected to a position at a predetermined time, for example, the hour (0 second).

Subsequently, only the second stepping motor 31 is pulsed to wind the minute hand gear 34 quickly (S8). Then, a comparison is made between the output pattern from the photo transistor and the output pattern previously stored in the control unit (S9). If the obtained output pattern and the stored output pattern are not suitable, the minute hand gear 34 is quickly wound again. On the other hand, when the obtained output pattern and the stored output pattern are suitable, the second stepping motor 31 is stopped at that time, and the driving of the minute hand gear 34 and the hour hand gear 36 is stopped (S10).

Here, the time correction by comparison between the output pattern and the previously stored pattern is performed by fitting to any one of the three types of patterns in the same manner as in the case described above. That is, as shown in Fig. 13A, the output pattern of the phototransistor by the minute hand gear 34 is an off width at which the light shielding portion acts, alternately two narrow B portions and one wide A portion. As shown in Fig. 13 (b), the output pattern of the phototransistor by the hour hand gear 36 has three kinds of D widths, E widths, and C widths at which the light shielding portion acts. The output pattern obtained by alternating intervals is a pattern in which the D, B, and A portions are combined, and the E, B, and A portions are combined as shown in FIG. 13 (c). And three types of patterns in which the C portion, the B portion, and the A portion are combined form a pattern appearing at a predetermined interval.

Thus, when a pattern composed of a combination of D, B, and A portions is confirmed, for example, 4:00, when a pattern composed of a combination of E, B, and A portions is confirmed, for example, 8:00, When the pattern consisting of the combination of the C part, the B part and the A part is confirmed, for example, at 12: 00, the minute hand gear is stopped by stopping the second stepping motor 31 when any one of these patterns is detected. 34 and the hour hand gear 36, that is, the minute hand and the hour hand, can be time-corrected at a predetermined time.

After the second stepping motor 31 is stopped, the output of the light emitting diode is turned off, light emission is stopped (S11), and the time correction operation is finished.

According to the radio wave correction clock which performs the said operation, in the 1st fifth gear 22 driven by the 1st stepping motor 21, and the 3rd gear 33 driven by the 2nd stepping motor 31, it is a light. The interval through which the detection light of the detection sensor 40 passes is an even number in the number of output pulses of each of the motors 21 and 31, and there is no relationship between this odd number and the even number.

Therefore, when relative rotation occurs between the first stepping motor 21 and the second stepping motor 31 due to an external factor such as post-assembly impact, and the rotation phase of both is shifted, the first stepping motor 21 and the second Even when the stepping motor 31 is driven to rotate at the same time, the position (the position at which the output of the light detection sensor is turned on) always exists.

For example, when the third gear 33 is displaced, the first fifth gear 22 has the number of pulses of the first stepping motor 21 every 5 pulses, i.e., 0, 5, 10, 15, 20, 25, 30. The detection light is made to pass for each pulse, while the third gear 33 has 1, 7, 13, 19, 25, 31... 2, 8, 14, 20, 26, 32... 3, 9, 15, 21, 27, 33... 4, 10, 16, 22... The detection light is passed for each pulse, and when 5 pulses are shifted, 5, 11... The detection light passes through each pulse. In this case, 25 pulses for 1 pulse shift, 20 pulses for 2 pulse shift, 15 pulses for 3 pulse shift, 10 pulses for 4 pulse shift, and 5 pulses for 5 pulse shift do.

On the other hand, when the first fifth gear 22 is displaced, the third gear 33 has the number of pulses of the second stepping motor 31 every six pulses, i.e., 0, 6, 12, 18, 24, 30. The detection light is passed for each pulse, and on the other hand, when the first fifth gear 22 is shifted by one pulse, 1, 6, 11, 16, 21, 26... 2, 7, 12, 17, 22, 27... 3, 8, 13, 18, 23, 28... 4, 9, 14, 19, 24, 29... 5, 10, 15, 20, 25, 30... The detection light passes through each pulse. In this case, 6 pulses for 1 pulse shift, 12 pulses for 2 pulse shift, 18 pulses for 3 pulse shift, 24 pulses for 4 pulse shift, and 30 pulses for 5 pulse shift do.

That is, since the second hand positioning and the minute hand and hour hand positioning can be performed by simultaneously driving both motors 21 and 31, the time required for time correction can be shortened as a whole.

As described above, according to the self-correcting clock of the present invention, the first guide gear directly connected to the first guideline and the second guide gear directly connected to the second guideline are positioned at positions corresponding to the predetermined time based on the time signal. In the automatic correction of, the first drive device for driving the first guideline and the second drive device for driving the second guideline are simultaneously driven to perform the alignment of the first guideline and the alignment of the second guideline. As long as there is no deviation in the phases of both driving apparatuses, the positioning of the minute hand and the hour hand as a first guide, for example, a second hand and a second guide, can be performed easily and in a short time.

Moreover, a 1st drive apparatus is comprised by the 1st stepping motor, the 1st transmission gear rotated and driven by a 1st stepping motor, and the second hand gear meshed with a 1st transmission gear, and a 2nd drive apparatus is a 2nd stepping apparatus. A first stepping motor when configured by a motor, a second transmission gear that is rotationally driven by a second stepping motor, a minute hand gear meshed with the second transmission gear, and an hour hand gear that is rotationally driven in conjunction with the minute hand gear; The second stepping motor is driven at the same output frequency, and one of the first transmission gear and the second transmission gear is rotationally controlled so that the output of the detection means is turned on when the number of output pulses of the motor is odd, and the number of output pulses of the motor is odd. In both driving devices, the phase of both drive devices is rotated by controlling the other of the first transmission gear and the second transmission gear so that the output of the detection means is turned on when the common factor is not even between and. If you draw even caused others can certainly run the alignment That time correction of the second hand, minute hand, the hour hand.

Claims (2)

A first drive device for driving a first guideline, a second drive device for driving a second guideline, a first guide gear directly connected to the first guideline, a second guide gear directly connected to the second guideline Detecting means for detecting that the controller is located at a position corresponding to the predetermined time based on the time signal, and a control unit controlling an operation of correcting the predetermined time based on the output signal and the time signal of the detecting means. As a self-correcting watch that performs And the control unit simultaneously drives the first driving device and the second driving device to perform time correction of the first guideline and time correction of the second guideline. 2. The apparatus of claim 1, wherein the first drive device includes a first stepping motor, a first transmission gear that is rotationally driven by the first stepping motor, and a second hand gear that meshes with the first transmission gear. , The second driving device includes a second stepping motor, a second transmission gear that is rotationally driven by the second stepping motor, a minute hand gear engaged with the second transmission gear, and a hour hand that is rotationally driven in conjunction with the minute hand gear. With gears, The control unit drives the first stepping motor and the second stepping motor at the same output frequency, One of the first transmission gear and the second transmission gear has a plurality of transmission holes formed to turn on the output of the detection means when the number of output pulses of the motor is odd, The other of the first transmission gear and the second transmission gear has a plurality of transmission holes formed to turn on the output of the detection means when the number of output pulses of the motor is an even number with no odd number between the odd numbers. Featuring a self-correcting watch.