KR100666418B1 - Automatic correctable timepiece - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to enable a timepiece to be corrected quickly and with high precision while miniaturizing and reducing the cost of an automatic quartz watch.

The first drive device 20 for driving the second hand, the second drive device 30 for driving the minute hand and the hour hand, the second hand gear 23, the minute hand gear 34, and the position corresponding to a predetermined time based on the radio signal. A detection sensor 40 for detecting that the hour hand gear 36 is positioned, and a control unit for controlling an operation of correcting at a predetermined time based on an output signal and a radio wave signal of the detection unit, wherein the control unit includes a first drive device and a first drive unit. 2 Drive the device simultaneously to correct the time of the second hand, and the time of the minute and hour hands.

Description

Auto Correct Watch {AUTOMATIC CORRECTABLE TIMEPIECE}

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

Figure 2 is a longitudinal sectional view showing an 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 time correction driving 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 in the case of performing a correction drive of time in an automatic correction clock.

<Description of the symbols for the main parts of the drawings>

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: deflection 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: arc through hole

36d: 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

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. Based on the received signal, it is reset to what is called zero, and when it resets to 0, the instruction | position position detection apparatus is provided in order to adjust the position of instruction | indication exactly on time.

As a conventional radio wave correcting clock 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, the radio wave correcting clock provided with the above-described guide position detection device has the following problems. That is, when the photodetecting sensor is provided separately with the photodetecting sensor corresponding to the driving device for driving the second hand and the photodetecting sensor corresponding to the driving device for driving the minute hand and hour hand separately, two spaces for the photodetecting sensor are required. There is a problem that the apparatus becomes large and the cost becomes high.

In addition, in the case where a single optical detection sensor is intended to be unified with two driving devices, each motor or the like of the two driving devices for driving the instructions rotates out of phase due to an impact or other external factors, respectively. In the case of the above-mentioned operation, an operation for matching these phases is required, and as a result, there is a problem that the time for detecting the position of the guideline is long. In addition, in the case where the conventional detection holes are provided, there is a problem that time is required until all the detection holes coincide, and similarly, it takes a long time to detect the position of the guideline.

In addition, when the light transmitting sensor is used 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 as to check the markings and the like engraved on the gears stored therein, dust and the like invade from this hole. There was a problem that external light penetrated and caused 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 watch that can be modified quickly and with high precision while miniaturizing and reducing the cost of the device. .

As a result of earnestly examining the present inventors in order to achieve the above object, the inventors have found the invention having the following constitution.

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 the time, wherein the control unit simultaneously drives the first driving device and the second driving device to correct the time of the first guideline and the time of the second guideline. It features.

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 A configuration having a plurality of transmission holes formed to turn on the output of the detection means when the output pulse number of the emitter is an even number with no odd number between the odd numbers can be adopted.

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 completed, the controller stops driving operations of the first drive device and the second drive device, respectively.

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 In the case where 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 engaged 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 rotate 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. Controlling the rotation of 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 number of output pulses of the motor is an even number with no odd number between the odd numbers. .

Best Mode for Carrying Out the Invention Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 is a plan view showing one embodiment of a guide position detection device in an automatic crystal clock according to the present invention, particularly in a radio wave clock, and Fig. 2 is a longitudinal sectional view of the guide position detection device. The radio wave correcting clock according to this embodiment includes a first driving device 20 for driving the second hand as a guide, a second driving device 30 for driving the minute and hour hands as a guide, and a second hand in the watch body 10. The light transmission type light detection sensor 40 which detects the position of the minute and hour hands, the manual correction device 50 which the user adjusts the time directly by hand, and the predetermined frequency transmitted from a radio station, for example, Japan Standard Time, are transmitted with high precision. And a control unit (not shown) in charge of control when receiving a standard time electric wave (JG2AS) which is a long wave (40 kHz), and performing a so-called reset to 0 based on this received signal.

The watch body 10 is formed of the lower case 11 as the second case and the upper case 12 as the first case, and the lower case 11 and the upper case 12, which are connected to each other to form an outline. An inner plate 13 disposed in a state substantially connected to the lower case 11 in a central portion of the space, and located at predetermined positions of the lower case 11, the inner plate 13, and the upper case 12 in the space. On the other hand, the 1st drive apparatus 20, the 2nd drive apparatus 30, the optical detection sensor 40, the manual correction apparatus 50, a control part, etc. are being fixed or axially 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. Large diameter to the first stepping motor 21 constituted by the rotor 21c rotatably arranged between the other magnetic poles of the head) and the pinion 21c 'of the rotor 21c. The first fifth gear 22 as the first transmission gear (first detection gear) meshed with the gear 22a and the small diameter gear 22b of the first fifth gear 22 are meshed with each other. It consists of the second hand gear 23 as a 2nd detection gear (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 axially supported by 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 axially rotatably supported by the lower case 11 and the upper case 12. 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, and one end of the shaft portion is axially supported by the upper case 12, and the other end side of the inner plate 13 penetrated to the lower case 11 side. The second hand shaft 23b is press-fitted, and the second hand shaft 23b is penetrated 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 off by the notch holes 23f. This arc-shaped deflection spring 23e deflects 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 23d 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 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 miniature 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 axially supported by 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, and is axially supported by the inner plate 13 and the upper case 12, and has a large diameter. 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, the one provided with the transmission hole 22c. As a result, the parts can be shared, and the cost of the product can be reduced.

The third gear 33 is formed with 60 teeth of the large-diameter gear 33a and 10 teeth of the small-diameter gear 33b, one end of the shaft portion being axially 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 rotatably supported by the inner plate 13, and the other end shaft part 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, the minute hand gear 34 has three arc-shaped transmissions that are circumferentially long in the region overlapping with the second hand gear 23, the first fifth gear 22, and the third gear 33 by rotation, as shown in FIG. 9. Holes 34c, 34d and 34e are formed. These arc-shaped through holes 34c and 34-d arcs are formed spaced apart from the center angle? 5 by 30 °, and the arc-shaped through holes 34d and the arc-shaped through holes 34e are center angles? 6. The arc-shaped through hole 34e and the arc-shaped through hole 34c are formed to be spaced apart by 60 ° from the center angle α7. That is, the widest light shielding portion A is formed between the arc-shaped transmission hole 34e and the arc-shaped transmission hole 34c, and the arc-shaped transmission hole 34c and the arc-shaped transmission hole 34d and The light shielding portion B, which is narrower than the light shielding portion A, is formed between and between the arc-shaped transmission hole 34d and the arc-shaped transmission hole 34e.

Further, the arc-shaped through hole 34c has a circular portion 34c 'on one end side, a wide arc portion 34c' 'extending from the other end side, and a narrow 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 inserted into the bearing hole 11a formed in the lower case 11, and is rotatably supported, 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 long arc-shaped through holes 36c, 36d and 36e are formed. These arc-shaped transmission holes 36c and arc-shaped transmission holes 36d are formed spaced apart from the center angle α8 45 °, and the arc-shaped transmission holes 36d and the arc-shaped transmission holes 36e are the center angle α9 60. The arc-shaped through hole 36e and the arc-shaped through hole 36c are formed to be spaced apart from each other at a center angle α10 of 30 °, and furthermore, the arc-shaped through holes 36c, 36d and 36e are formed. The length of 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.

In addition, the circular permeation | transmission hole 36c is circular part 36c 'located in the place where center angle (beta) 1 is 7.5 degrees from one end side, wide circular arc part 36c "extended 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 axially rotatably supported 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 slow down the rotation of the minute hand gear 34. 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 of the widened portion and passes only the converged light. It is to prevent the detection. 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.

In the case of 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 sequentially 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 through 12e and axially 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 correct | amend the guide position manually.

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 rotation center axis in common, and the time is displayed, the second hand is inserted through the hour hand pipe 36p. During this 60 seconds, one revolution is made, the minute hand is rotated once in 60 minutes, and the hour hand is rotated once in 12 hours.

As shown in FIG. 11, the tip portion of the minute hand pipe 34p in the minute hand gear 34 and the tip portion of the hour hand pipe 36p in the hour hand gear 36 extend in a predetermined width in the radial direction. 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).

Here, when 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] The drive is stopped to the position where the second hand gear 23 is reset to zero (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, the output pattern of the phototransistor by the minute hand gear 34 is an off width at which the light shielding portion acts, as shown in FIG. 13 (a). The wide A section is alternately formed, and the output pattern of the phototransistor by the hour hand gear 36 is shown in FIG. And C part alternately appearing at predetermined intervals, and the combined output pattern is a pattern in which D part, B part and A part are combined, and E part, B part and A part as shown in FIG. Three types of the pattern in which the addition is combined and the pattern in which the C, B, and A portions 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 above operation, since the circular hole, that is, the long hole, is used as the transmission hole for passing the detection light through the minute hand gear 34 and the hour hand gear 36, the optical 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 the minute hand and the hour hand can be shortened.

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

14 shows another embodiment of a 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 is driven by the second stepping motor 31. The detection light is passed through once every 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 is made with the output pattern previously stored in the control unit (S6). If 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 photo transistor by the hour hand gear 36 has three kinds of D widths, E widths, and C widths at which the light shielding portions act. As shown in FIG. 13 (c), a pattern in which D, B, and A portions are combined, a pattern in which E, B, and A portions are combined , Three kinds 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 five pulses, that is, 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 to correct the time as a whole can be shortened.

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 a position corresponding to a predetermined time based on the time signal. In the automatic correction, since the first driving device for driving the first guideline and the second driving device for driving the second guideline are simultaneously driven, the alignment of the first guideline and the positioning of the second guideline are performed. As long as there is no deviation in the phases of both drive devices, it is possible to easily and shortly adjust the position of the minute hand and the hour hand, that is, the time as the first guideline, for example, the second hand and the second guideline, for example.

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 it can certainly modify the second hand, minute hand, alignment, that time of the hour.

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 operation to a predetermined time based on the output signal and the time signal of the detecting means. An autocorrect watch that automatically corrects The controller drives the first driving device and the second driving device at the same time to correct the time of the first guideline and the time of the second guideline, 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 meshed 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. delete

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