JP2000352588A - Analog electronic timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a highly reliable multifunction analog electronic timepiece. SOLUTION: For a drive source driving a time indication mechanism 51, an ultrasonic motor (1) 34 is provided. With a control circuit 235, the generating timings of a drive pulse for an ultrasonic motor (2) 33 driving a calendar indication mechanism 72 and of a drive pulse for the ultrasonic motor (1) 34 driving the time indication mechanism 51 are controlled. The control circuit 235 inputs a drive pulse command signal to a piezoelectric vibrator drive circuit 2361. The piezoelectric vibrator drive circuit 2361 gives a drive pulse of which generation timing is controlled to the ultrasonic motor (1) 34. By the operation of the ultrasonic motor (2) 33 and the ultrasonic motor (1) 34, the calendar indication mechanism 72 and the time indication mechanism 51 function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog electronic timepiece having first display means driven by an ultrasonic motor and second display means driven by a motor.

[0002]

2. Description of the Related Art FIG. 15 is a first block diagram of a conventional analog electronic timepiece. FIG. 16 is a front plan view of a conventional analog electronic timepiece. FIG. 17 is a rear plan view of a conventional analog electronic timepiece. FIG. 18 is a longitudinal sectional view showing a time display section of a conventional analog electronic timepiece.

FIG. 19 is a vertical sectional view 1 showing a calendar display section of a conventional analog electronic timepiece. FIG. 20 is a second block diagram of a conventional analog electronic timepiece. FIG. 21 is a front plan view of a conventional analog electronic timepiece having a plurality of driving sources. FIG. 22 is a second longitudinal sectional view showing a calendar display section of a conventional analog electronic timepiece.

As shown in FIG. 15, electric energy from a power supply 1 is supplied to an electronic circuit 2. An oscillation circuit 201 included in the electronic circuit 2 oscillates a reference signal, for example, 32,768 Hz.
32,768 Hz of the reference signal is further set to 1 Hz by the frequency dividing circuit 202. The electronic circuit 2 generates a driving pulse for driving the stepping motor 3 by using the 1-Hz signal from the frequency dividing circuit 202 by the pulse generating circuit 203 and the driving circuit 204.

[0005] The stepping motor 3 of the timepiece receives the magnetic energy, a coil 301 for converting the drive pulse from the drive circuit 204 of the electronic circuit 3 into electromagnetic energy by electromagnetic conversion, a stator 302 for guiding the magnetic energy to the rotor 303, and a magnetic energy. It comprises a rotor 303 that rotates and is made of an electromagnet. Since the driving torque is small, the stepping motor 3 provides the pinion 304 to the rotor 303 and transmits the rotation torque to the transmission mechanism 4 including the fifth wheel & pinion 405 as a reduction gear train. The transmission mechanism 4 includes one of the trains constituting the reduction train.
The second hand 503 indicating the second is set on the fourth wheel 404 that makes one revolution per minute.
The time is displayed by attaching the minute hand 502 indicating the minute to the minute wheel 402 rotating once per hour and the hour hand 501 to the hour wheel 401 rotating once per 12 hours. In addition, to indicate the date etc.
24 through the transmission mechanism 6 composed of a reduction gear train.
The daily clock attached to the date wheel 703 that makes one revolution in time
The date and the like are displayed by sending the date plate 701 on which the date engaging with 704 is printed once a day.

The rotor 303 fifth wheel 405 fourth wheel 404
Are supported by a support member 91 and are held by a train wheel bridge 92. Further, a third wheel & pinion 403 that transmits torque from the fourth wheel & pinion 404 to the minute wheel 402 includes a date plate holder 702 for guiding a date plate 701.
And is held by a train wheel bridge 92.

[0007]

However, the time required for the date plate 701 constituting the conventional analog electronic timepiece to be sent once a day is about four hours. The rest of the day, about 20 hours, was accidentally caused by the impact of carrying the watch, etc.
There is a date jumper 705 that engages with the tooth portion 7011 of the date plate 701 so as to prevent rotation. Spring part 7051 of jumper 705
Due to the elastic force, the regulating portion 7052 of the date jumper 705 enters the tooth portion 7011 of the date plate 701 and the date plate 701 is locked. During about four hours when the date plate 701 is switched with the change of the date, the stepping motor 3 must rotate while receiving the load of the elastic force of the spring portion 7051 of the date jumper 705.

Accordingly, the driving pulse from the electronic circuit 2 to the stepping motor 3 is applied to the spring portion 7051 of the date jumper 705.
Is large enough to generate the rotational torque of the stepping motor 3 that can overcome the elastic force of the stepping motor. For about 20 hours during which the date plate 701 is not switched, continuing to supply a large amount of energy sufficient to generate the rotational torque of the stepping motor 3 enough to overcome the elastic force of the spring portion 7051 of the date jumper 7 means that the current consumption is reduced. Therefore, there is a problem that the life of the battery 11 is shortened.

Further, in order to correct the date plate 701 to an arbitrary date, the rotation from the stepping motor 3 is rotated daily to rotate the intermediate wheel.
Turn the date wheel 703 via 601. Independently of the mechanism for switching the date plate 701, by turning the crown 801 by hand, the rotation of the hand is transmitted from the crown 801 to the date correction wheel 803 via the squeeze wheel 802. Date correction wheel 803 engaging with date plate 701
Also has a mechanism for correcting the date plate 701 to an arbitrary date.

[0010] While the date plate 701 is being switched by the date wheel 701, the tooth portion 7011 of the date plate 701 is normally switched to the date jumper 705.
It has moved from the position 7011 locked by. Sun plate 701
The tooth portion 7011 is located at the position 7012. At this time, the date plate 701 is adjusted to an arbitrary date by the date correction wheel 803 engaged with the date plate 701. In some cases, the date correction wheel 803 and the tooth portion 7012 of the date plate 701 may abut each other. If the date on the date plate 701 is forcibly set to an arbitrary date by hand, the date correction wheel 803 or the tooth portion 7012 of the date plate 701 may be broken.

In order to solve these problems, FIG.
As shown in FIGS. 21 and 22, there is also an analog electronic timepiece in which a stepping motor 32 for rotating only a date plate 711 on which a date is printed is installed to eliminate the date jumper 705. Sun plate 701
The stepping motor 32 that rotates only includes a coil 321, a stator 322, and a rotor 323. Further rotor 32
The transmission mechanism 61 that transmits torque to the calendar display mechanism 71
A pinion 324 for transmitting a rotational torque is provided.
By providing the stepping motor 32, the spring portion 7051 of the date jumper 705 can be used for about 20 hours when the date plate 701 is not switched.
It is no longer necessary to supply a large amount of energy sufficient to generate the rotational torque of the stepping motor 3 that only overcomes the elastic force of the stepping motor.

When the date of the date plate 711 is arbitrarily corrected, a coil 311, a stator 312, and a rotor for inputting a date plate correction input signal to the control circuit 215 of the electronic circuit 2 by a button 811.
It is composed of 313. The stepping motor 31 has a rotor 313
Having. The rotor 313 is provided with a pinion 314 for transmitting rotation torque to the transmission mechanism 4 for transmitting torque to the time display mechanism 5. The drive circuit 214 is a stepping motor
A drive pulse of a stepping motor 32 for rotating only a date plate 711 different from 31 is generated. A date plate correction command signal is transmitted to the drive circuit 214, and the stepping motor 32 is rotated to arbitrarily correct the date on the date plate 711.

However, since the torque generated by the stepping motor 32 is very small, the wheel train 4
Apart from that, it is necessary to have a wheel train 61 with a large reduction ratio. There is a problem that the transmission mechanism 61 including the stepping motor 32 and the date turning intermediate wheel 611 and the date turning intermediate wheel 612 is required separately from the elimination of the date jumper 705 and the date correction wheel 803.

Further, the stepping motor 31 and the stepping motor 32 are electromagnetic conversion mechanisms. Therefore, it is weak against a strong external magnetic field. It is necessary to separate the stepping motor 31 and the stepping motor 32 by a distance L that is not affected by the mutual magnetism so that the magnetism generated by the stepping motor 31 and the magnetism generated by the stepping motor 32 do not affect each other. The distance L is not a negligible space in a small watch size, but inevitably results in a large analog electronic watch.

An object of the present invention is to provide a thin and highly reliable multifunctional analog electronic timepiece in order to solve the conventional problems.

[0016]

In order to solve the above-mentioned problems, the present invention relates to an analog electronic timepiece, in which an ultrasonic motor drive for outputting a power supply, a source vibration, and a pulse of a predetermined cycle for driving the vibration generating means is provided. A circuit, a vibration generating means for inducing vibration by an electrostrictive effect of the piezoelectric element by an output signal of the ultrasonic motor driving circuit, a pressing means for pressing the vibration generating means and the rotating means at a predetermined pressure, and A rotating unit that performs a rotating motion by vibration, a first display unit that operates by rotation of the rotating unit, a motor driving circuit that outputs an output signal for driving the motor, a motor that operates based on an output signal of the motor driving circuit, And a second display means operated by the operation of the motor. Further, an ultrasonic motor was used as the motor.

[0017]

In the analog electronic timepiece according to the present invention, the ultrasonic motor drive circuit outputs a pulse having a predetermined period for driving the vibration generating means in response to the output signal of the source vibration. The vibration generating means induces vibration by an electrostrictive effect of the piezoelectric element based on an output signal of the ultrasonic motor driving circuit. The pressurizing means pressurizes the vibration generating means and the rotating means at a predetermined pressure. The rotating means is
Rotational motion is performed by vibration of the vibrating body. When the first display means operates by the rotation of the rotation means, the motor drive circuit outputs an output signal for driving the motor.

The motor operates according to the output signal of the motor drive circuit. The second display means operates by the operation of the motor. Therefore, a highly reliable multifunctional analog electronic timepiece can be provided.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram showing Embodiment 1 of an analog electronic timepiece according to the present invention. FIG. 2 is a longitudinal sectional view of Embodiment 1 of the analog electronic timepiece of the present invention.

In FIG. 1, an oscillation circuit 201 of an electronic circuit 2 oscillates a reference signal of 32,768 Hz in response to electric energy from a power supply 1. The reference signal is set to 1 Hz in the frequency dividing circuit 202. The signal from the frequency dividing circuit 202 is a sine wave. In order to make the driving pulse of the stepping motor 3 and the ultrasonic motor 33 into a rectangular wave, the signal from the frequency dividing circuit 202 which is a sine wave in the pulse generating circuit 203 is made into a rectangular wave. The pulse generation circuit 203 outputs a rectangular wave signal to the control circuit 225.
Send to

The control circuit 225 controls the supply timing of the drive pulse of the stepping motor 3 which is the drive source of the time display mechanism 5 and the drive pulse of the ultrasonic motor 33 which is the drive source of the calendar display mechanism. Then, the control circuit 225
Inputs a drive pulse command signal to the stepping motor drive circuit 224. Stepping motor drive circuit 224
Gives a drive pulse to the stepping motor 3. Further, a drive pulse command signal is input to a piezoelectric vibrator drive circuit 2261 which supplies a drive pulse to the ultrasonic motor 33.

Here, in order to promote the electrostriction effect of the piezoelectric vibrator 331 constituting the ultrasonic motor 33, it is necessary to carry an ultrasonic signal of 20 KHz to 40 KHz on the driving pulse of the ultrasonic motor 33. . Electronic circuit 2 for generating ultrasonic signals
Has a drive pulse generation circuit 2263. The drive pulse generation circuit 2263 oscillates an ultrasonic signal of 20 KHz to 40 KHz. From the output pulse generation circuit 2262, the piezoelectric vibrator drive circuit
An ultrasonic signal is supplied to the 2261. Piezoelectric vibrator drive circuit 2261
Then, the ultrasonic signal is combined with a 1-Hz drive pulse command signal of the control circuit 225 to obtain a drive pulse of the ultrasonic motor 33.

The electrostriction effect of the piezoelectric vibrator 331 is induced by the drive pulse from the piezoelectric vibrator drive circuit 2261. The piezoelectric vibrator 331 vibrates and transmits the vibration to the vibrating body 332. The vibrating body 332 and the moving body 33
3 is in pressure contact. Therefore, the vibration of the vibrating body 332 generates a frictional force between the vibrating body 332 and the moving body 333. The moving body 333 performs rotational motion by vibration and frictional force. The rotation of the moving body 333 rotates the calendar display mechanism 72 composed of a date plate or the like on which date characters are printed.

The control circuit 225 controls the supply timing of the drive pulse of the ultrasonic motor 33 and the drive pulse of the stepping motor 3. The drive pulse command signal whose supply timing is controlled from the control circuit 225 is input to the stepping motor drive circuit 224. The stepping motor drive circuit 224 supplies a drive pulse to the stepping motor 3. The stepping motor 3 is a driving source of the time display mechanism 5.

The display of the time display mechanism 5 is corrected by the time correction device 8. The calendar display mechanism 72
It is composed of a date plate on which date characters are printed. The display of the calendar display mechanism 72 is corrected by the date information input device 82. The correction signal of the date information input device 82 is transmitted to the control circuit 22.
Enter 5. From the control circuit 225, the piezoelectric vibrator drive circuit 2261
, A correction command signal is induced. Piezoelectric vibrator drive circuit 2261
Transmits a drive pulse for driving the ultrasonic motor 33.
The ultrasonic motor 33 is driven to correct the display on the calendar display mechanism 72. Calendar display mechanism 72 by ultrasonic motor 33
Is driven and corrected. As a result, an effect is produced in which more accurate calendar information is immediately transmitted to the watch holder without hindering the driving of the time display mechanism 5.

In FIG. 2, the stepping motor 3 for driving the time display mechanism 5 comprises a coil 301, a stator 302 and a rotor 303. Coil 301, stator 302,
The rotor 303 is held by the support member 91 and the train wheel bridge 92.
The ultrasonic motor 33 drives the calendar display mechanism 72. A drive pulse for the ultrasonic motor 33 is generated from the electronic circuit 2. The conductor 93 supplies a driving pulse of the ultrasonic motor 33 to the piezoelectric vibrator 331. The piezoelectric vibrator 331 induces high-frequency vibration by the electrostriction effect. Upon receiving the high frequency vibration of the piezoelectric vibrator 331, the vibrating body 332 is excited to vibrate the vibrating body 332.

The vibrating body 332 and the moving body 333 are in pressure contact with a pressure spring 334. The vibrating body 332 has a protrusion 3321 for amplifying vibration. The moving body 333 has a sliding portion 3331 that increases the frictional force. Therefore, a frictional force is generated between the projection 3321 of the vibrating body 332 and the sliding part 3331 of the moving body 333. The moving body 333 rotates around the shaft 3333 of the moving body 333 fitted to the moving body guide 911 of the support member 91. The moving body 333 has a tooth portion 3332 of the moving body 333 that meshes with the tooth portion 7211 of the date plate 721. When the moving body 333 rotates, the display of the date plate 721 is switched, and the rotation of the date plate 721 is prompted. Here, since the rotation of the moving body 333 is driven by the frictional force with the vibrating body 332, the ultrasonic motor 33 does not generate magnetism.
The ultrasonic motor 33 does not affect the stepping motor 3 driven by electromagnetic conversion due to magnetism.

Therefore, the ultrasonic motor 33 can be laid out irrespective of the position of the stepping motor 3, and the effect of reducing the size of the electronic timepiece can be obtained. In addition, day plate 72
The pressure spring 334 is in pressure contact with the moving body 333 that meshes with 1. Due to the pressure of the pressure spring 334, the holding force of the moving body 333 is strong and is not affected by an external impact. The holding force of the date plate 721 meshing with the moving body 333 is also strong. The date plate 721 does not malfunction due to an external impact.

The present invention has an effect that the conventional jumper is unnecessary. (Embodiment 2) FIG. 3 is a block diagram of Embodiment 2 of the analog electronic timepiece of the present invention. FIG. 4 is a front plan view of Embodiment 2 of the analog electronic timepiece of the present invention. FIG.
1 is a rear plan view of a second embodiment of the analog electronic timepiece of the present invention. FIG. 6 is a longitudinal sectional view of a drive source for displaying time in the second embodiment of the analog electronic timepiece of the present invention. FIG. 7 is a vertical sectional view of a drive source for calendar display according to the second embodiment of the analog electronic timepiece of the present invention. FIG. 8 is a vertical sectional view 1 showing a plurality of driving sources of an analog electronic timepiece according to a second embodiment of the present invention. FIG. 9 is a second longitudinal sectional view showing a plurality of driving sources according to the second embodiment of the analog electronic timepiece of the present invention. FIG. 10 is a third longitudinal sectional view showing a plurality of drive sources of the analog electronic timepiece according to the second embodiment of the present invention. FIG. 11 is a vertical sectional view showing a plurality of driving sources of an analog electronic timepiece according to a second embodiment of the present invention.
It is. FIG. 12 shows a second embodiment of the analog electronic timepiece according to the present invention.
FIG. 5 is a vertical sectional view 5 showing a plurality of drive sources.

FIG. 3 shows an embodiment in which an ultrasonic motor (1) 34 is provided as a drive source for driving the time display mechanism 51. Calendar display mechanism by control circuit 235
The timing of generating a driving pulse of the ultrasonic motor (2) 33 for driving the 72 and the driving pulse of the ultrasonic motor (1) 34 for driving the time display mechanism 51 are controlled. The control circuit 235 inputs a drive pulse command signal to the piezoelectric vibrator drive circuit 2361.
The piezoelectric vibrator drive circuit 2361 gives the ultrasonic motor (1) 34 a drive pulse whose generation timing is controlled.

Here, in order to promote the electrostriction effect of the piezoelectric vibrator 341 constituting the ultrasonic motor (1) 34, the driving pulse of the ultrasonic motor (1) 34 is required to have an ultrasonic wave of 20 KHz to 40 KHz. It is necessary to put a signal. For electronic circuit 2, from 20 KHz
Drive pulse generation circuit 2363 that oscillates a 40 KHz ultrasonic signal
There is. Further, the signal of the drive pulse generation circuit 2363 is transmitted to the piezoelectric vibrator drive circuit 23 through the output pulse generation circuit 2362.
An ultrasonic signal is supplied to 61.

In the piezoelectric vibrator driving circuit 2361, the ultrasonic signal from the output pulse generating circuit 2362 is combined with a 1 Hz driving pulse command signal of the control circuit 235 to form a driving pulse for the ultrasonic motor (1) 34. The electrostriction effect of the piezoelectric vibrator 341 is induced by the drive pulse from the piezoelectric vibrator drive circuit 2361. The piezoelectric vibrator 341 vibrates and transmits the vibration to the vibrating body 342. The vibrating body 342 and the moving body 343 are in pressure contact with each other by the pressing force of a pressing spring 344 which is an elastic body.

For this reason, the vibration of the vibrating body 342 is
3 generates a frictional force to cause the moving body 343 to rotate. The rotation of the moving body 343 is controlled by the time display mechanism 51.
Drive. The time displayed by the time display mechanism 51 is corrected by the time correction device 81. Oscillation of the reference signal of the crystal oscillator 2011 occurs due to the electric energy of the battery 11, and the electronic circuit 2 is driven. An ultrasonic motor (1) 34 for driving a time display mechanism 51 for displaying time by a drive pulse of the electronic circuit 2 and an ultrasonic motor (2) 33 for driving a calendar display mechanism 72 are driven.

The rotation of the ultrasonic motor (1) 34 is controlled by the fourth wheel & pinion 514.
To drive the hands indicating the time. Time display mechanism 51
The ultrasonic motor (1) 34 for driving the motor supplies a driving pulse from the electronic circuit 2. A high frequency vibration is induced in the piezoelectric vibrator 341 of the ultrasonic motor (1) 34 by the electrostriction effect. The vibrating body 342 receives the high-frequency vibration of the piezoelectric vibrator 341.
And the vibrating body 342 is vibrated.

The vibrating body 342 and the moving body 343 are pressed by a pressure spring.
The pressure spring 344 held at 94 makes pressure contact.
Therefore, the protrusions 34 for amplifying the vibration of the vibrating body 342
A frictional force is generated between 21 and the sliding portion 3431 of the moving body 343. The moving body 343 rotates around the shaft 3433 of the moving body 343 fitted to the moving body guide 911 of the support member 91. Moving object343
Has a tooth portion 3432 of the moving body 343 that meshes with the fourth wheel & pinion 514. When the moving object 343 rotates, the fourth wheel & pinion 514 rotates and switches the time display. Here, since the moving body 343 meshing with the fourth wheel & pinion 514 is pressed against the pressing spring 344, the moving body 343
Strong holding power.

The slip section 51 of the minute indicator 512 that balances the transmitted torque due to the time adjustment by the winding stem 881 of the time adjustment device 81.
Since the slip torque is stronger than the slip torque of No.21, the transmission torque due to the time correction by Makima 881
At 5121, there is an effect that the setting member 95 becomes unnecessary because it is absorbed. To correct the display of the date plate 721 of the calendar display mechanism,
This is performed by operating a button 821, which is a date information input device 82. The external signal input device 822 gives a correction instruction to the electronic circuit 2 to urge the display of the date plate 721 of the calendar display mechanism to the command pattern 291 of the electronic circuit 2. The electronic circuit 2 supplies a correction drive pulse to the ultrasonic motor (2) 33. The ultrasonic motor (2) 33 is driven to correct the display of the date plate 721, and the correction of the date plate 721 is completed.

As described above, a great effect is obtained by combining an ultrasonic motor as a driving source. Further, since the ultrasonic motor does not generate magnetism, the position of the stepping motors is not restricted. And
It is not necessary to arrange a plurality of motors at positions separated from each other on a plane, and it is possible to arrange them in a stacked manner. In FIG. 9, a part of the ultrasonic motor of the piezoelectric vibrator 331 of the ultrasonic motor (2) 33 and a part of the ultrasonic vibrator 341 of the ultrasonic motor (1) 34 are overlapped with a part of the other ultrasonic motor. I do.

In FIG. 10, a vibrating body 342 of the ultrasonic motor (1) 34 is disposed between the vibrating body 332 of the ultrasonic motor (2) 33 and the moving body 333. In FIG. 11, the shaft 3333 of the moving body 333 of the ultrasonic motor (2) 33 and the ultrasonic motor (1)
The arrangement is such that the shaft 3433 of the 34 moving body 343 is fitted to the moving body guide 911 of the same support member 91. Therefore, an effect of greatly contributing to downsizing of the electronic timepiece is also produced.

In FIG. 12, the ultrasonic motor (1)
The shaft 3433 of the moving body 343 of the 34 is made hollow, and the shaft 3333 of the moving body 333 of the ultrasonic motor (2) 33 penetrates through the hollow shaft 3433 of the ultrasonic motor (1) 34. Is provided. A pressure spring holder 941 for holding the pressure spring (1) 343 is provided on the shaft 3333 of the moving body 333 of the ultrasonic motor (2) 33. The elastic force of the pressure spring 344 can be applied to the ultrasonic motor (2) 33 and the ultrasonic motor (1) 34. The pressure spring and the pressure spring retainer can be shared by one. Therefore, the number of parts can be reduced.

Further, since there is no variation in the elastic force applied to the ultrasonic motor (2) 33 and the ultrasonic motor (1) 34, stable driving is possible, and the reliability of the driving source is improved. Further, by using the ultrasonic motor 34 as a drive source for driving the hands indicating time, such as displaying seconds as one minute per rotation, the parts of the ultrasonic motor (2) 33 and the ultrasonic motor (1) 34 Can be shared. (Embodiment 3) FIG. 13 is a block diagram of Embodiment 3 of the analog electronic timepiece of the present invention. FIG. 14 is a longitudinal sectional view of Embodiment 3 of the analog electronic timepiece of the present invention.

FIG. 13 shows an embodiment in which an ultrasonic motor (3) 35 is provided as a drive source for driving the chronograph display mechanism 73 as an example of the special display. Ultrasonic motor (3) 3 that drives the chronograph display mechanism 73 with the control circuit 245
The timing of generating the drive pulse of the fifth drive pulse and the drive pulse of the ultrasonic motor (1) 34 for driving the time display mechanism 51 is controlled.
A drive pulse command signal is input to a piezoelectric vibrator drive circuit 2461 which supplies a drive pulse whose generation timing is controlled by the control circuit 245 to the ultrasonic motor (1) 34.

Here, in order to promote the electrostriction effect of the piezoelectric vibrator 351 constituting the ultrasonic motor (3) 35, the driving pulse of the ultrasonic motor (3) 35 is required to have an ultrasonic wave of 20 KHz to 40 KHz. It is necessary to put a signal. In order to generate an ultrasonic signal, the drive pulse generating circuit 2463 in the electronic circuit 2 oscillates an ultrasonic signal of 20 KHz to 40 KHz. Output pulse generation circuit
An ultrasonic signal is supplied from 2462 to the piezoelectric vibrator drive circuit 2461. In the piezoelectric vibrator drive circuit 2461, the output pulse generation circuit
The ultrasonic signal from 2462 and the 1 Hz drive pulse command signal from the control circuit 245 are combined to form a drive pulse for the ultrasonic motor (3) 35.

The electrostriction effect of the piezoelectric vibrator 351 is induced by the drive pulse from the piezoelectric vibrator drive circuit 2461. The piezoelectric vibrator 351 vibrates and transmits the vibration to the vibrating body 352. The vibrating body 352 and the moving body 35 are pressed by the pressing force of an elastic pressing spring 354.
3 is in pressure contact. For this reason, the vibration of the vibrating body 342 generates a frictional force on the moving body 343, and causes the moving body 343 to perform a rotating motion. The rotation of the moving body 343 drives the chronograph display mechanism 73. The operation of the chronograph displayed by the chronograph display mechanism 73 is performed by the chronograph instruction input device 83.

In FIG. 14, an ultrasonic motor (3) 35 for driving a chronograph display mechanism 73 is a piezoelectric vibrator of the ultrasonic motor (3) 35 in which a drive pulse transmitted from the electronic circuit 2 is transmitted.
The piezoelectric vibrator 351 is supplied to the piezoelectric vibrator 351 to induce high-frequency vibration due to the electrostriction effect. Upon receiving high-frequency vibration of the piezoelectric vibrator 351, the vibrating body 352 is excited to vibrate the vibrating body 352.

Since the vibrating body 352 and the moving body 353 are in pressurized contact by the pressurizing spring 354, there is a gap between the protrusion 3521 for amplifying the vibration of the vibrating body 352 and the sliding part 3531 of the moving body 353. Generates frictional force. The moving body 353 rotates around a shaft 3533 of the moving body 353 fitted to the moving body guide 911 of the support member 91. The shaft portion 3533 of the moving body 353 penetrates the support member 91,
A fitting portion 3534 for the moving body 353 to which the special display needle 504 is fixed is provided. Thus, the special display hand 504 is driven by the rotation of the moving body 353, and a special function such as a chronograph function can be displayed. Using an ultrasonic motor with a high holding torque as a drive source for functions that do not always drive, such as the chronograph function, has the effect of preventing malfunctions due to external impact and displaying highly reliable special functions. Can be

Also, the shaft portion 3533 of the moving body 353 which is the driving source
Since the special display hand 504 is directly fixed to the fitting portion 3534, an analog electronic timepiece in which the number of parts can be reduced can be achieved. Also, like the chronograph function,
Even in a drive source that drives a pointer that does not need to be driven, for example, displays less than one second, the reliability of special functions such as a chronograph function can be improved by mounting the ultrasonic motor (3) 35. it can.

[0047]

The present invention relates to an analog electronic timepiece,
A power source, a source vibration, an ultrasonic motor driving circuit for outputting a pulse of a predetermined cycle for driving the vibration generating means, and a vibration generating means for inducing vibration by an electrostrictive effect of the piezoelectric element by an output signal of the ultrasonic motor driving circuit A pressurizing means for pressurizing the vibration generating means and the rotating means with a predetermined pressure; a rotating means for performing a rotary motion by vibrating the vibrating body; a first display means operated by rotation of the rotating means; and a motor. The motor drive circuit that outputs an output signal for driving, a motor that operates according to the output signal of the motor drive circuit, and the second display unit that operates according to the operation of the motor have the following effects. A highly reliable multifunctional analog electronic timepiece can be obtained. A thin analog electronic clock can be obtained.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of the first embodiment of the analog electronic timepiece according to the present invention.

FIG. 3 is a block diagram showing Embodiment 2 of the analog electronic timepiece of the present invention.

FIG. 4 is a front plan view of a second embodiment of the analog electronic timepiece according to the present invention.

FIG. 5 is a rear plan view of Embodiment 2 of the analog electronic timepiece according to the present invention.

FIG. 6 is a vertical sectional view of a drive source for displaying time in an analog electronic timepiece according to a second embodiment of the present invention.

FIG. 7 is a vertical sectional view of a drive source for calendar display according to a second embodiment of the analog electronic timepiece of the present invention.

FIG. 8 is a longitudinal sectional view 1 of a plurality of driving sources according to a second embodiment of the analog electronic timepiece of the present invention.

FIG. 9 is a second longitudinal sectional view of a plurality of driving sources of the second embodiment of the analog electronic timepiece according to the present invention.

FIG. 10 shows a second embodiment of the analog electronic timepiece according to the present invention.
3 is a vertical sectional view No. 3 of the plurality of driving sources.

FIG. 11 is a second embodiment of the analog electronic timepiece according to the present invention.
FIG. 4 is a vertical sectional view No. 4 of the plurality of drive sources.

FIG. 12 is a second embodiment of the analog electronic timepiece according to the present invention.
FIG. 5 is a vertical sectional view 5 of the plurality of driving sources.

FIG. 13 is a block diagram showing Embodiment 3 of the analog electronic timepiece of the present invention.

FIG. 14 is a longitudinal sectional view of Embodiment 3 of the analog electronic timepiece of the present invention.

FIG. 15 is a first block diagram of a conventional analog electronic timepiece.

FIG. 16 is a front plan view of a conventional analog electronic timepiece.

FIG. 17 is a rear plan view of a conventional analog electronic timepiece.

FIG. 18 is a longitudinal sectional view showing a time display section of a conventional analog electronic timepiece.

FIG. 19 is a vertical sectional view 1 showing a calendar display section of a conventional analog electronic timepiece.

FIG. 20 is a second block diagram of a conventional analog electronic timepiece.

FIG. 21 is a front plan view of a conventional analog electronic timepiece having a plurality of driving sources.

FIG. 22 is a second longitudinal sectional view showing a calendar display section of a conventional analog electronic timepiece.

[Explanation of symbols]

 Reference Signs List 1 power supply 11 battery 2 electronic circuit 224 stepping motor drive circuit 225, 235, 245 control circuit 2261, 2361, 2461 piezoelectric vibrator drive circuit 3, 31, 32 stepping motor 33, 34, 35 ultrasonic motor 4, 6 transmission mechanism 504 4th wheel 5, 51 Time display mechanism 7, 72 Calendar display mechanism 721 Date plate 73 Chronograph display mechanism 8, 81 Time correction device 82 Month / day information input device 83 Chronograph instruction input device 94, 941 Pressing spring press

Claims (3)

[Claims] 1. A power supply, a power source which operates by the power source and outputs a reference signal, and an ultrasonic motor drive which receives an output signal of the source vibration and outputs a pulse of a predetermined cycle for driving a vibration generating means A circuit, a vibration generating means for inducing vibration by an electrostrictive effect of a piezoelectric element by an output signal of the ultrasonic motor driving circuit, a pressing means for pressing the vibration generating means and the rotating means at a predetermined pressure, Rotating means for performing a rotary motion by vibration of a vibrating body; transmitting means for transmitting the rotation of the rotating means; a date plate for displaying calendar information as first display means operated by the rotation of the transmitting means; A motor driving circuit that outputs an output signal for driving the motor, a motor that operates by an output signal of the motor driving circuit, and a second display that operates by the operation of the motor. Analog electronic watch that. 2. A power supply, a power source which operates by the power source and outputs a reference signal, and an ultrasonic motor drive which receives an output signal of the power source and outputs a pulse having a predetermined period for driving a vibration generating means. A circuit, a vibration generating means for inducing vibration by an electrostrictive effect of a piezoelectric element by an output signal of the ultrasonic motor driving circuit, a pressing means for pressing the vibration generating means and the rotating means at a predetermined pressure, Rotating means for performing a rotary motion by vibration of a vibrating body, a date plate for displaying calendar information as first display means operated by rotation of the rotating means, and a motor drive circuit for outputting an output signal for driving a motor; A motor operated by an output signal of the motor drive circuit; and a second display unit operated by the operation of the motor, wherein a plane shape of the vibration generating unit is a disk shape. Analog electronic clock. 3. A power supply, a power source which operates by the power source and outputs a reference signal, and an ultrasonic motor drive which receives an output signal of the power source and outputs a pulse having a predetermined cycle for driving a vibration generating means. A circuit, a vibration generating means for inducing vibration by an electrostrictive effect of a piezoelectric element by an output signal of the ultrasonic motor driving circuit, a pressing means for pressing the vibration generating means and the rotating means at a predetermined pressure, Rotating means for performing a rotary motion by vibration of a vibrating body, a date plate for displaying calendar information as first display means operated by rotation of the rotating means, and a motor drive circuit for outputting an output signal for driving a motor; A motor operated by an output signal of the motor drive circuit; and a second display unit operated by the operation of the motor, wherein a rotation center of the rotation unit is located inside the first display unit. Ri, and an analog electronic timepiece, characterized in that not on the rotation center coaxial with said first display means.