JP2013125004A - Analog electronic timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an analog electronic timepiece in which positions of hands are properly corrected against backlash without deteriorating appearance.SOLUTION: An analog electronic timepiece includes a stepping motor that can rotate normally and reversely, hands, a first gear, and a second gear that engages with the first gear; is provided with a train wheel mechanism that transfers rotation of the stepping motor to the hands; and moves the hands to rotate clockwise or anti-clockwise on the basis of the direction of rotation of the stepping motor. The analog electronic timepiece is further provided with detection means for detecting a conduction state of the first gear and the second gear, and drive control means for driving, when the conduction state of the first gear and the second gear is not detected by the detection means, the stepping motor until the conduction state is detected by the detection means.

Description

  The present invention relates to an analog electronic timepiece that displays information using hands.

  Conventionally, there is an analog electronic timepiece that displays various information including a time using hands. In many of these analog electronic watches, a gear train (wheel train mechanism) for rotating the hands is driven by a motor so that the hands can be rotated in either the forward or reverse direction. ing.

  At this time, when the pointer is rotated by a gear train mechanism in which a plurality of gears are engaged with each other, a play called backlash is provided between the gears. Conventionally, when the direction of movement of the pointer is reversed due to this backlash, or when the meshing is loosened due to an external impact, the rotation of the first gear in the gear train mechanism immediately affects the other gears. As a result, there is a problem that a deviation occurs between the number of times of driving by the motor and the assumed position of the pointer.

  Therefore, in Patent Document 1 and Patent Document 2, when a pointer for displaying time is reversely fast-forwarded, the pointer operation is to move the position once before the movement target position and then return to the forward rotation direction to reach the movement target position ( A technique for resuming normal pointer operation related to time display after removing the influence of backlash by performing (back-back) is disclosed.

  Further, in Patent Document 3, when the movement direction of the pointer is reversed from the movement direction in the movement operation to the next time, the number of correction pulses set in advance for each product is output. Thus, a technique for removing the influence of backlash in advance is disclosed.

JP 57-166585 A JP 7-43479 A JP 2011-191220 A

  However, in recent years, as the train wheel mechanism becomes complex, the amount of backlash accumulated as a whole of the train wheel mechanism increases, and the number of steps must be reversed so that the user feels troublesome. There is a problem. Moreover, since the magnitude | size of a backlash also changes with use conditions, such as ambient temperature, there exists a subject that it does not necessarily become the preset number of steps.

  An object of the present invention is to provide an analog electronic timepiece capable of correcting an appropriate hand position with respect to backlash without deteriorating appearance.

In order to achieve the above object, the present invention
A stepping motor capable of normal rotation and reverse rotation;
Guidelines,
A gear train mechanism having a first gear and a second gear meshing with the first gear, and transmitting the rotation of the stepping motor to the pointer;
In an analog electronic timepiece that moves the hands clockwise and counterclockwise based on the rotation direction of the stepping motor,
Detecting means for detecting a conduction state between the first gear and the second gear;
A drive control means for driving the stepping motor until a conduction state is detected by the detection means when the conduction state between the first gear and the second gear is not detected by the detection means;
It is characterized by having.

  According to the present invention, in an analog electronic timepiece, there is an effect that an appropriate pointer position can be corrected with respect to backlash without deteriorating appearance.

It is a block diagram which shows the structure of the analog electronic timepiece of embodiment of this invention. It is a figure explaining the structure which detects the backlash of a wheel train mechanism. It is a flowchart which shows the control procedure of a pointer operation | movement process. It is a flowchart which shows the modification of the control procedure of a pointer operation | movement process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an analog electronic timepiece according to an embodiment of the present invention.

The analog electronic timepiece 1 of the present embodiment is an electronic timepiece that performs analog display related to the current time and various functions by rotating the second hand 51, the minute hand 52, and the hour hand 53, respectively.
The analog electronic timepiece 1 includes a second hand 51, a stepping motor 71 that drives the second hand 51 via a train wheel mechanism 61, a minute hand 52, a stepping motor 72 that drives the minute hand 52 via a train wheel mechanism 62, and an hour hand 53. A stepping motor 73 that drives the hour hand 53 via the train wheel mechanism 63, a motor drive circuit 33, a CPU (Central Processing Unit) 34, a ROM (Read Only Memory) 35, and a RAM (Random Access Memory) 36. And an oscillation circuit 38, a frequency dividing circuit 39, a time counting circuit 40, a power supply unit 41, a current detection unit 42 as a detection means, an antenna 43, a detection circuit 44, and the like. Among these components, for example, the motor drive circuit 33, the CPU 34, the ROM 35, the RAM 36, the oscillation circuit 38, the frequency dividing circuit 39, the time counting circuit 40, and the detection circuit 44 are included in a single LSI (Large scale integrated circuit) 30. It is installed and arranged.

  Each of the gear train mechanisms 61 to 63 is configured by meshing a plurality of gears, and transmits the rotational movement of the rotor of the stepping motors 71 to 73 to the second hand 51, the minute hand 52, and the hour hand 53. In the gear train mechanisms 61 to 63, there is a backlash between the meshed gears.

The motor drive circuit 33 generates a pulsed drive voltage waveform having a preset pulse width in accordance with a drive signal for moving the pointer input from the CPU 34 in the forward direction or the reverse direction, and supplies the drive voltage waveform to the stepping motors 71 to 73. Output.
The motor drive circuit 33 and the CPU 34 constitute drive control means.
The stepping motors 71 to 73 each rotate the rotor by a predetermined angle (for example, 180 °) by the pulsed drive voltage output from the motor drive circuit 33. In addition, the rotor can be rotated in the forward rotation direction or the reverse rotation direction according to the output pattern of the drive pulse.

  The detection circuit 44 demodulates the standard radio wave signal received using the antenna 43 and outputs it to the CPU 34. The CPU 34 decodes and decodes the demodulated standard radio signal, so that the analog electronic timepiece 1 can acquire the correct current time.

  The oscillation circuit 38 generates a predetermined frequency signal and outputs it to the frequency dividing circuit 39. The frequency dividing circuit 39 divides the frequency signal input from the oscillation circuit 38 by a set frequency dividing ratio, supplies a time counting timing signal to the time counting circuit 40, and is used by the CPU 34 and other components. Timing signals of various frequencies to be used are supplied to the CPU 34.

  The time counting circuit 40 counts the timing signal input from the frequency dividing circuit 39 and counts the current time. Further, the current time counted by the time counting circuit 40 can be overwritten and corrected to another time such as the current time acquired from the standard radio wave signal by a correction command from the CPU 34.

  The operation unit 45 has a plurality of operation buttons, converts the operation of these operation buttons by the user into electrical signals, and outputs them to the CPU 34. Moreover, the operation part 45 is good also as providing a crown.

  The CPU 34 performs various arithmetic processes and performs overall control of the operation of the analog electronic timepiece 1. The ROM 35 stores a control program executed by the CPU 34 and initial setting data used when the control program is executed. The ROM 35 may be a rewritable nonvolatile memory such as an EEPROM (Electrically Erasable and Programmable Read Only Memory).

  The RAM 36 provides a working memory space to the CPU 34. The RAM 36 stores a minute hand reverse flag 36a (storage means) that becomes a set value “1” when the minute hand 52 is driven in the reverse direction.

  The power supply unit 41 includes, for example, a battery such as a solar battery or a secondary battery, and supplies an operating voltage to each part of the analog electronic timepiece 1. Further, the power supply unit 41 outputs a detection voltage changed to an appropriate voltage by the regulator to the current detection unit 42.

  The current detection unit 42 detects whether predetermined gears constituting the gear train mechanism 62 are in a conductive state or in a non-conductive state. The current detection unit 42 includes a pair of energization units 42a and 42b and an ammeter (not shown) that measures the current flowing between the energization units 42a and 42b. The energization parts 42a and 42b are arranged such that one end thereof is connected to the regulator and the other end is in contact with a different gear.

  FIG. 2 is a diagram illustrating a configuration for detecting backlash of the train wheel mechanism. FIG. 2A is a perspective view, and FIG. 2B is a side view.

  One end of each of the energization units 42a and 42b is fixed on the LSI 30, and a voltage for detecting continuity is applied. A terminal Ca is provided at the other end of the energizing portion 42a, and the terminal Ca is arranged so as to contact without being fixed to the minute hand wheel 62a (first gear). In addition, a terminal Cb is provided at the other end of the energizing portion 42b, and the terminal Cb is disposed so as to contact the third wheel 62b (second gear) without being fixed. The energization parts 42a and 42b have, for example, a tubular structure including a metal spring, and the terminals Ca and Cb are within a range that does not hinder the rotation operation of the minute hand wheel 62a and the third wheel 62b by the elastic force of the spring. Lightly pressed against the minute hand wheel 62a and third wheel 62b. The materials and shapes of the current-carrying portions 42a and 42b and the terminals Ca and Cb may be any materials that have high electrical conductivity and can maintain contact with the minute hand wheel 62a and the third wheel 62b. Further, the minute hand wheel 62a and the third wheel 62b have annular guide concave portions and convex portions for appropriately maintaining contact with the terminals Ca and Cb regardless of the rotation state of the minute hand wheel 62a and the third wheel 62b. It may be provided.

  Here, when there are three or more gears constituting the gear train mechanism 62, the contact object of the terminal Cb is not limited to the third wheel 62b but is included between the stepping motor 72 and the third wheel 62b. Other gears not shown may be used. The gears provided between the gear to be contacted with the terminal Cb and the minute hand wheel 62a are all made of a material having high electrical conductivity. On the other hand, the contact object of the terminal Ca is preferably the minute hand wheel 62a. However, for example, if the backlash between the third wheel 62b and the minute hand wheel 62a alone is not assumed to be a case where the minute hand 52 does not move, the total number of backlashes in the wheel train mechanism 62 is added to the stepping motor 72. When there is a case where the minute hand 52 does not move due to the driving of the other gears, the other gears and the terminal Ca are considered in consideration of the relationship between the arrangement of the gears constituting the train wheel mechanism 62 and the arrangement of the conducting portion 42a. It is also possible to arrange them in contact with each other.

  When a voltage for detecting continuity is applied between the current-carrying parts 42a and 42b, when there is no play between the minute hand wheel 62a and the third wheel 62b, the current flows so that the continuity state Is detected. When there is play between the minute hand wheel 62a and the third wheel 62b, it is detected that the current does not flow in this portion and is in a non-conductive state. In addition, since the power consumption increases as the value of the flowing current increases, a resistor or the like for adjusting the current amount is appropriately disposed in the current detection unit 42.

  In the current detection unit 42 according to the present embodiment, the backlash is detected only for the minute hand 52, but the backlash can be similarly detected for the other hands. For example, the deviation of about 1 to 2 degrees in the angle difference in the hour hand 53 is not conspicuous as compared with the positional deviation of the minute hand 52. Therefore, even if only a normal pointer position confirmation and correction operation performed once a day is performed. Difficult to occur in practice. Therefore, the presence / absence of the backlash detection mechanism of the hour hand 53 is appropriately selected in consideration of the necessity of accurate alignment, the space for arranging the configuration related to detection of backlash, and the power consumption required for operation. Can do. Further, the maximum backlash that can be assumed based on various usage states of the analog electronic timepiece 1, that is, the amount of play between the gears in the train wheel mechanism is one step of the pointer. For example, when the second hand 51 moves 6 degrees in one step operation, but the backlash is about 1 to 2 degrees at the maximum, the train wheel is driven by a stepping motor. Since it is considered that the idle rotation of the gear in the mechanism is unlikely to occur, it is less necessary to provide a configuration for detecting backlash. On the other hand, when the movement angle in the one-step operation of the second hand 51 is 1 degree, by providing a backlash detection mechanism similar to the minute hand 52, the position of the second hand 51 can be more reliably maintained at an accurate position. I can do it.

  Next, the pointer operation corresponding to the backlash will be described.

  FIG. 3 is a flowchart showing a control procedure by the CPU 34 of the pointer operation processing of the present embodiment. FIG. 3A shows the content of the pointer operation process during the reverse rotation operation, and FIG. 3B shows the content of the pointer operation processing during the forward rotation operation.

  The pointer operation processing is performed based on the moving direction of the minute hand 52 during normal time display and hand movement processing related to the timekeeping function, when fast-forwarding the pointer related to various functions such as time correction and alarm time setting. It is a process that is selected and called.

  When the reverse rotation operation process is called, as shown in FIG. 3A, the CPU 34 first reads the minute hand reverse flag 36a to determine whether or not the previous minute hand operation was normal rotation (step S11). If it is determined that the rotation is normal, the CPU 34 outputs a drive signal for the minute hand 52 to the motor drive circuit 33 to drive the train wheel mechanism 62 in the reverse rotation direction by one step (step S12). The process of the CPU 34 proceeds to step S13. On the other hand, when it is determined in the determination process in step S11 that the previous minute hand operation has been reversed, the process of the CPU 34 proceeds directly to step S13.

  When the process proceeds to step S13, the CPU 34 determines whether the terminals Ca and Cb are short-circuited based on the detection signal from the current detection unit 42. If it is determined that the terminals Ca and Cb are not short-circuited, the CPU 34 sends a drive signal to the motor drive circuit 33 to cause the stepping motor to perform a reverse operation by one step (step S14). Then, the process returns to step S13 to determine again whether or not the terminals Ca and Cb are short-circuited. If it is determined in step S13 that the terminals Ca and Cb are short-circuited, the CPU 34 subsequently outputs a drive signal for causing the minute hand 52 to perform a normal reverse operation to the motor drive circuit 33 ( Step S15). Then, when the normal reverse rotation operation ends, the CPU 34 ends the reverse rotation operation process.

  When the forward rotation operation process is called, as shown in FIG. 3B, the CPU 34 first reads the minute hand reverse flag 36a to determine whether or not the previous minute hand operation was reverse rotation (step S21). If it is determined that the rotation has been reversed, the CPU 34 outputs a drive signal for the minute hand 52 to the motor drive circuit 33 to drive the train wheel mechanism 62 in one step forward rotation direction (step S22). The process of the CPU 34 proceeds to step S23. On the other hand, if it is determined in the determination process in step S21 that the previous minute hand operation has been reversed, the process of the CPU 34 proceeds directly to step S23.

  When the process proceeds to step S23, the CPU 34 determines whether or not the terminals Ca and Cb are short-circuited based on the detection signal from the current detection unit 42. If it is determined that the terminals Ca and Cb are not short-circuited, the CPU 34 sends a drive signal to the motor drive circuit 33 to cause the stepping motor to perform forward rotation one step (step S24). Then, the process returns to step S23 to determine again whether or not the terminals Ca and Cb are short-circuited. If it is determined in step S23 that the terminals Ca and Cb are short-circuited, the CPU 34 subsequently outputs a drive signal for performing a normal forward rotation operation to the motor drive circuit 33 (step S25). ). When this normal forward rotation operation is completed, the CPU 34 ends the normal rotation operation process.

  As described above, the analog electronic timepiece 1 of the present embodiment includes the current detection unit 42, and before moving the minute hand 52, the two gears of the gear train mechanism 62 (the minute hand wheel 62a and the third wheel 62b). Whether or not backlash remains between the minute hand wheel 62a and the third wheel 62b is detected by determining whether or not there is continuity between the terminals Ca and Cb in contact with the wheel. Then, the stepping motor 72 is driven step by step until the terminals Ca and Cb become conductive, the backlash between the gears disappears, and the rotation of the stepping motor 72 is normally transmitted to the minute hand 52. After the 62 gears are rotated in order, the normal reverse operation is performed. Accordingly, since the operation for adjusting the backlash of the train wheel mechanism 62 is performed without performing the swing back of the minute hand 52, the minute hand 52 can be moved by an accurate number of steps without deteriorating the appearance by the user. I can do it.

  In addition, by using the minute hand reverse flag 36a and storing the direction of the previous pointer operation, the adjustment operation is not required when rotating in the same direction as the previous time. Further, since the case where the previous movement direction and the current movement direction are opposite directions can be determined based on the minute hand reverse rotation flag 36a, the rotation direction of the gear can be determined by moving one step before detecting the conduction state. The possibility of erroneously determining the case where the gears mesh with each other on the opposite side and is conducted can be eliminated.

  Further, considering the backlash between the gears constituting the gear train mechanism 62, the positional relationship between the arrangement of the gears and the arrangement of the energizing portions 42a, 42b, etc., the gears that are not directly meshed with each other are considered. Even in a small analog electronic timepiece 1, the internal configuration can be determined by determining whether or not there is continuity, or by not determining the continuity to the minute hand wheel 62 a that transmits rotation to the minute hand 52 in the train wheel mechanism 62. Placement can be optimized.

  On the other hand, normally, all the gears are meshed in a state where the hands can be moved by detecting the conduction state between the minute wheel 62a directly joined to the hands and the other gears. It can be confirmed.

  Further, among the play angles between the gears due to backlash accumulated in the train wheel mechanism, the maximum angle assumed in various usage conditions is always required by the rotation angle per step of the pointer or the analog electronic timepiece 1. By providing the current detection unit 42 only for the pointer that is so large that it cannot be ignored with respect to the position accuracy (allowable maximum error) of the pointer to be detected and the current detection unit 42 needs to detect continuity, an increase in unnecessary volume or Power consumption can be reduced.

[Modification 1]
FIG. 4 is a flowchart showing a modification of the hand movement process in the analog electronic timepiece 1 of the present embodiment.

  In the flowchart of this modified example, after the normal reverse operation (step S15) is performed, the processes of steps S16 and S17 are further performed, and after the normal reverse operation (step S25) is performed, the process of S26 is further performed. Except for the point that the process of S27 is performed, it is the same as the flowchart of the above-described embodiment, and the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 4A, when the normal reverse operation (step S15) is completed in the reverse operation processing, the CPU 34 next determines whether or not the terminals Ca and Cb are short-circuited (step). S16). If it is determined that the terminals Ca and Cb are not short-circuited, the CPU 34 sends a drive signal to the motor drive circuit 33 to cause the stepping motor 72 to perform a reverse rotation operation by one step (step S17). Then, the process of the CPU 34 returns to the determination process of step S16. On the other hand, if it is determined in step S16 that the terminals Ca and Cb are short-circuited, the CPU 34 ends the reverse rotation process.

  On the other hand, as shown in FIG. 4B, when the normal forward rotation operation (step S25) is completed in the reverse rotation operation processing, the CPU 34 next determines whether or not the terminals Ca and Cb are short-circuited. (Step S17). If it is determined that the terminals Ca and Cb are not short-circuited, the CPU 34 sends a drive signal to the motor drive circuit 33 to cause the stepping motor 72 to perform forward rotation one step (step S27). Then, the process of the CPU 34 returns to the determination process of step S26. On the other hand, when it is determined in step S26 that the terminals Ca and Cb are short-circuited, the CPU 34 ends the normal rotation operation process as it is.

  As described above, according to the pointer operation process of the modified example, after the normal pointer operation process is finished, the backlash is adjusted so that the two gears are surely engaged on the traveling direction side in the pointer operation process. Therefore, when the pointer is driven in the same direction during the next pointer operation, the movement of the pointer can be started more reliably without the influence of backlash.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, in the above-described embodiment, the analog electronic timepiece 1 including the second hand 51, the minute hand 52, and the hour hand 53 that are independently driven has been described. However, the present invention can be applied to a case where other functional hands are further provided. is there. Further, the present invention can be similarly applied to the analog electronic timepiece 1 in which the minute hand 52 and the hour hand 53 are driven in conjunction with each other.

  Moreover, in the said embodiment, although the terminal Ca and Cb showed the structure which contacts a gear with the back surface of a gearwheel, suppose that it pinches | interposes from upper and lower surfaces, or suspends terminals Ca and Cb from the upper and lower surfaces and makes them contact. You may do it.

  The analog electronic timepiece 1 shown in the above embodiment shows a pointer-type display device in general having a time measuring function.

Although several embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and equivalents thereof.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.

[Appendix]
<Claim 1>
A stepping motor capable of normal rotation and reverse rotation;
Guidelines,
A gear train mechanism having a first gear and a second gear meshing with the first gear, and transmitting the rotation of the stepping motor to the pointer;
In an analog electronic timepiece that moves the hands clockwise and counterclockwise based on the rotation direction of the stepping motor,
Detecting means for detecting a conduction state between the first gear and the second gear;
A drive control means for driving the stepping motor until a conduction state is detected by the detection means when the conduction state between the first gear and the second gear is not detected by the detection means;
An analog electronic timepiece characterized by comprising:
<Claim 2>
A stepping motor capable of normal rotation and reverse rotation;
Guidelines,
A train wheel mechanism including a plurality of gears for transmitting the rotation of the stepping motor to the pointer,
In an analog electronic timepiece that moves the hands clockwise and counterclockwise based on the rotation direction of the stepping motor,
Detecting means for detecting a conduction state between two gears included in the train wheel mechanism;
A drive control means for driving the stepping motor until a conduction state is detected by the detection means when the conduction state between the first gear and the second gear is not detected by the detection means;
An analog electronic timepiece characterized by comprising:
<Claim 3>
The analog electronic timepiece according to claim 1 or 2, wherein one of the gears whose conduction state is detected by the detection means is a gear directly joined to the hands.
<Claim 4>
The drive control means, when receiving a movement operation command for the pointer, drives the stepping motor based on the detection result of the detection means before moving the pointer based on the movement operation command. The analog electronic timepiece according to any one of claims 1 to 3, wherein
<Claim 5>
Storage means for storing the latest movement direction of the pointer,
The drive control means includes
When the movement direction of the pointer in the movement operation command of the pointer input from the outside is different from the movement direction stored in the storage unit, the stepping motor is moved one step in the movement direction of the pointer in the movement operation command. The analog electronic timepiece according to any one of claims 1 to 4, wherein after the driving, the stepping motor is driven based on a detection result of the detection means.
<Claim 6>
The guidelines are plural,
The train wheel mechanism is provided in parallel with each of the plurality of hands,
The stepping motor drives each wheel train mechanism independently,
The detection means is provided for each pointer whose movement angle per step of each of the pointers is smaller than the play angle between the gears accumulated in the gear train mechanism corresponding to the pointer. An analog electronic timepiece according to any one of claims 1 to 5.

1 Analog electronic clock 30 LSI
33 Motor drive circuit 34 CPU
35 ROM
36 RAM
36a Minute hand reverse flag 38 Oscillating circuit 39 Frequency dividing circuit 40 Time counting circuit 41 Power supply unit 42 Current detection unit 42a, 42b Energizing unit 43 Antenna 44 Detection circuit 45 Operation unit 51 Second hand 52 Minute hand 53 Hour hand 61, 62, 63 Wheel train mechanism 62a Minute hand wheel 62b Third wheel 71, 72, 73 Stepping motor Ca, Cb terminal

Claims (6)

A stepping motor capable of normal rotation and reverse rotation;
Guidelines,
A gear train mechanism having a first gear and a second gear meshing with the first gear, and transmitting the rotation of the stepping motor to the pointer;
In an analog electronic timepiece that moves the hands clockwise and counterclockwise based on the rotation direction of the stepping motor,
Detecting means for detecting a conduction state between the first gear and the second gear;
A drive control means for driving the stepping motor until a conduction state is detected by the detection means when the conduction state between the first gear and the second gear is not detected by the detection means;
An analog electronic timepiece characterized by comprising: A stepping motor capable of normal rotation and reverse rotation;
Guidelines,
A train wheel mechanism including a plurality of gears for transmitting the rotation of the stepping motor to the pointer,
In an analog electronic timepiece that moves the hands clockwise and counterclockwise based on the rotation direction of the stepping motor,
Detecting means for detecting a conduction state between two gears included in the train wheel mechanism;
A drive control means for driving the stepping motor until a conduction state is detected by the detection means when the conduction state between the first gear and the second gear is not detected by the detection means;
An analog electronic timepiece characterized by comprising:   The analog electronic timepiece according to claim 1 or 2, wherein one of the gears whose conduction state is detected by the detection means is a gear directly joined to the hands. The drive control means, when receiving a movement operation command for the pointer, drives the stepping motor based on the detection result of the detection means before moving the pointer based on the movement operation command. The analog electronic timepiece according to any one of claims 1 to 3, wherein Storage means for storing the latest movement direction of the pointer,
The drive control means includes
When the movement direction of the pointer in the movement operation command of the pointer input from the outside is different from the movement direction stored in the storage unit, the stepping motor is moved one step in the movement direction of the pointer in the movement operation command. The analog electronic timepiece according to any one of claims 1 to 4, wherein after the driving, the stepping motor is driven based on a detection result of the detection means. The guidelines are plural,
The train wheel mechanism is provided in parallel with each of the plurality of hands,
The stepping motor drives each wheel train mechanism independently,
The detection means is provided for each pointer whose movement angle per step of each of the pointers is smaller than the play angle between the gears accumulated in the gear train mechanism corresponding to the pointer. An analog electronic timepiece according to any one of claims 1 to 5.

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