JP2014062761A - Information display device, analog electronic watch, and piezoelectric actuator - Google Patents

Abstract

An information display device, an analog electronic timepiece, and a piezoelectric actuator capable of moving a movable plate easily and quickly are provided.
A display panel provided with an opening, a pair of piezoelectric elements that expand when a predetermined voltage is applied, and one end thereof is displaced, and one according to the displacement of the one end. To maintain a contact state between a moving member that moves from a position in contact with one end of the piezoelectric element to a position in contact with one end of the other piezoelectric element, and the moving member and one of the pair of piezoelectric elements The moving member stopping means, a sign for switching the exposure state from the opening according to the movement of the moving member, and a display control means for controlling application of a predetermined voltage.
[Selection] Figure 3

Description

  The present invention relates to an information display device, an analog electronic timepiece, and a piezoelectric actuator.

  There are analog electronic watches that display time using hands. Conventionally, in an analog electronic timepiece, a stepping motor is driven to rotate, and this rotation is transmitted to a pointer through a gear train mechanism that is an arrangement of gears, thereby moving the pointer to a desired position and displaying the time. I let you.

  In recent years, with the increase in functionality of analog electronic watches, it is possible to selectively display not only the time but also a lot of information including date and day of the week. However, if all the signs and scales related to the information that can be displayed are provided on the display board and pointed by the pointer, there is a problem that it is difficult to determine which sign or scale the pointer points to. Therefore, a technology has been developed in which a movable plate (rotary plate) arranged under the display panel is rotated and only the signs and scales related to necessary information are selectively exposed from the openings provided in the display panel. (Patent Document 1).

JP 2011-027618 A

  However, when a movable plate having a larger torque than the pointer is rotated by driving a stepping motor like the pointer, a wheel train mechanism capable of rotating the same angle as the pointer at once is a small and lightweight analog electronic device. There is a problem that it is difficult to install on a watch. Therefore, conventionally, when the movable plate is rotated, the rotation angle per step is made small and continuously driven many times. As a result, there has been a problem that it is difficult to move the movable plate at a high speed.

  An object of the present invention is to provide an information display device, an analog electronic timepiece, and a piezoelectric actuator that can move a movable plate easily and quickly.

In order to achieve the above object, the present invention
A display panel provided with an opening;
A pair of piezoelectric elements that are extended by applying a predetermined voltage and each of which is displaced at one end;
A moving member that moves from a position in contact with the one end of the one piezoelectric element to a position in contact with the one end of the other piezoelectric element in accordance with the displacement of the one end;
A sign that changes the state of exposure from the opening according to the movement of the moving member;
An information display device comprising: display control means for controlling application of the predetermined voltage.
In order to achieve the above purpose,
A pair of piezoelectric elements that are extended by applying a predetermined voltage and each of which is displaced at one end;
A moving member that moves from a position in contact with the one end of the one piezoelectric element to a position in contact with the one end of the other piezoelectric element in accordance with the displacement of the one end;
A piezoelectric actuator comprising: a moving member stopping means for maintaining a contact state between the moving member and one of the pair of piezoelectric elements.

  According to the present invention, in the information display device, the analog electronic timepiece, and the piezoelectric actuator, there is an effect that the movable plate can be moved and operated easily and quickly.

1 is a front view of an analog electronic timepiece according to a first embodiment of the present invention. It is a block diagram which shows the internal structure of an analog electronic timepiece. It is a figure explaining the structure which concerns on a date wheel and a shutter, and its operation | movement. It is a figure explaining the structure which concerns on a date wheel and a shutter, and its operation | movement. It is a perspective view explaining the operation mechanism of a shutter. FIG. 10 is a diagram illustrating a configuration related to a shutter operation according to modification example 1; It is a perspective view explaining the operation mechanism of the shutter of the modification 1. FIG. It is a block diagram which shows the internal structure of the analog electronic timepiece of 2nd Embodiment. It is a figure explaining the structure which concerns on operation | movement of the shutter of the analog electronic timepiece of 2nd Embodiment. FIG. 10 is a diagram illustrating a configuration related to a shutter operation according to modification example 2;

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

[First Embodiment]
FIG. 1 is a front view of an analog electronic timepiece 100 which is an information display device according to a first embodiment of the present invention.
In this analog electronic timepiece 100, the second hand 12, the minute hand 13, and the hour hand 14 rotate between a dial 3 (display panel) of the main body 2 to which the band 7 is attached and a windshield (not shown) covering the upper surface. It is provided to be movable. The dial 3 is provided with an opening 5. A bezel 4 is provided on the peripheral edge of the main body 2, and push button switches S <b> 1 to S <b> 3 and a crown SR are provided on the side surface.

  From the opening 5, either the date dial 15 (sign portion) or the shutter 16 (shutter portion) is exposed. As shown in FIG. 1A, when the shutter 16 is not exposed (when the shutter 16 is open), the date mark provided on the upper surface of the date wheel 15 is exposed (opened) and the date is displayed. The On the other hand, as shown in FIG. 1B, when the shutter 16 is exposed (when the shutter 16 is closed), the date mark is blocked (blocked) by the shutter 16 and the date is displayed. Absent.

  FIG. 2 is a block diagram showing the internal configuration of the analog electronic timepiece 100.

  The analog electronic timepiece 100 includes a drive circuit 47, stepping motors 32 and 34, a gear train mechanism 22 to 25, a second hand 12, a minute hand 13, and an hour hand 14 (a plurality of hands), a date wheel 15, and a drive. Unit 48, piezoelectric actuator 360, shutter 16, power supply unit 51, booster circuit 52, operation unit 53, CPU 41 (Central Processing Unit) (display control means, pointer control means), ROM 42 (Read Only Memory) ), A RAM 43 (Random Access Memory), an oscillation circuit 44, a frequency dividing circuit 45, a time measuring circuit 46 (time measuring means), a radio wave receiving unit 54, an antenna 55, and the like.

  The drive circuit 47 outputs drive pulses to the stepping motors 32 and 34 based on a control signal from the CPU 41, and rotates the rotor of the stepping motors 32 and 34 by a predetermined angle (for example, 180 degrees).

  The rotation of the rotor of the stepping motor 32 is transmitted to the second hand 12 via the gear train mechanism 22. At this time, the rotation of the gear of the gear train mechanism 22 is further transmitted to the minute hand 13 via the gear train mechanism 23. Thereby, the second hand 12 and the minute hand 13 rotate in conjunction with each other. The rotation of the rotor of the stepping motor 34 is transmitted to the hour hand 14 via the gear train mechanism 24. At this time, the rotation of the gears of the train wheel mechanism 24 is further transmitted to the date wheel 15 via the train wheel mechanism 25. Here, the train wheel mechanism 25 is configured to transmit the rotation to the date wheel 15 only during a predetermined period (phase) of the rotation of the gears of the train wheel mechanism 24 as described later. On the other hand, the date wheel 15 is rotated intermittently.

  The drive unit 48 outputs a drive signal for operating the piezoelectric actuator 360 based on a control signal input from the CPU 41. The piezoelectric actuator 360 operates by applying a voltage input from the booster circuit 52 to the piezoelectric element in accordance with a drive signal input from the drive unit 48. The shutter 16 is rotated based on the operation of the piezoelectric actuator 360. The structure and operation of the piezoelectric actuator 360 will be described in detail later.

  The power supply unit 51 supplies power to each unit of the analog electronic timepiece 100. The power supply unit 51 of the analog electronic timepiece 100 of the present embodiment includes, for example, a button-type primary battery, but other batteries are used or used in combination depending on the required power, size, and weight of the analog electronic timepiece 100. I can do it. For example, the power supply unit 51 may have a configuration in which solar power generation and a storage battery (secondary battery) are combined. The booster circuit 52 boosts the voltage input from the power supply unit 51 to a predetermined voltage necessary for the operation of the piezoelectric actuator 360.

  The oscillation circuit 44 is a crystal oscillation circuit, for example, and generates and outputs a constant frequency signal. The frequency dividing circuit 45 divides the frequency signal input from the oscillation circuit 44 into a signal having a predetermined frequency used by the CPU 41 and the time measuring circuit 46 and outputs the signal. The time counting circuit 46 counts the number of times of the predetermined frequency signal input from the frequency dividing circuit 45, and counts the current time by adding to the initial setting time.

  The CPU 41 performs various arithmetic processes and controls the overall operation of the analog electronic timepiece 100. The CPU 41 causes each part of the analog electronic timepiece 100 to perform various operations by executing a control program stored in the ROM 42. The ROM 42 stores and stores a control program related to the control operation of the analog electronic timepiece 100 and various initial setting data. The RAM 43 is a volatile memory that provides a working memory space for the CPU 41 and stores temporary data, user setting data, and the like.

  The operation unit 53 receives a user operation, converts it into an electrical signal, and outputs it to the CPU 41 as an input signal. The operation unit 53 includes push button switches S1 to S3 and a crown SR. In the analog electronic timepiece 100, for example, the shutter 16 is alternately opened and closed by repeatedly pressing the push button switch S1.

  The radio wave receiver 54 is a receiving circuit for receiving and demodulating a long wave standard radio wave including time information using the antenna 55. In response to a command from the CPU 41, the radio wave receiver 54 starts to receive a standard radio wave at a predetermined time (for example, 1 am) and outputs a demodulated time signal to the CPU 41. The CPU 41 decodes the time signal to obtain accurate time information, and the CPU 41 corrects the time data of the clock circuit 46 based on the time information, so that the correct time display is maintained.

Next, a configuration related to the shutter operation in the analog electronic timepiece 100 will be described.
FIG. 3 is a diagram for explaining the date wheel 15 and the shutter 16 and the configuration relating to the operation thereof. FIG. 4 is a side view of the above configuration cut along a cutting line AA.

  The date wheel 15 is an annular disk that rotates around the same rotation axis as the second hand 12, the minute hand 13, and the hour hand 14. As shown in FIG. 3, date indicators “1” to “31” representing dates are arranged in order on the upper surface of the date dial 15. As shown in FIG. 4, the date wheel 15 is provided between the dial 3 and the casing 6, and the opening 5 of the dial 3 can selectively expose one of these date signs. It is a size. In the analog electronic timepiece 100 of the present embodiment, the gear train mechanism 25 that transmits the rotation of the stepping motor 34 to the date wheel 15 includes Geneva Drive gears 25a and 25b. The gear 25a and the gear 25b are engaged with each other only within a range of 90 degrees while the gear 25a is rotated 360 degrees once, and the date wheel 15 is rotated by a predetermined angle via an internal gear (not shown) of the date wheel 15. The gear 25a has a gear ratio adjusted so as to rotate once while the hour hand 14 makes two revolutions, and the date indicator 15 moves the date indicator one day by one rotation of the predetermined angle. That is, the date wheel 15 is rotated once a day for a predetermined period (for example, from 22:00 to 2 o'clock) to change the date indicator for one day.

  On the other hand, the shutter 16 has a disk shape smaller than that of the date dial 15 and is provided on the upper portion of the date dial 15 as shown in FIG. The shutter 16 rotates around the first rotation axis R1 set adjacent to the opening 5. The shutter 16 of the present embodiment is formed of a member made of an opaque material within a range of 270 degrees out of a disk shape, or the upper surface is processed, and this portion is exposed from the opening 5 so that the shutter 16 is The date wheel 15 is closed and covered. The remaining 90 degree range is formed of a transparent material member, or is an opening or a notch, and this portion is exposed from the opening 5 so that the shutter 16 is open. Thus, the date wheel 15 is exposed. Although the upper surface of the opaque portion is not particularly limited, the opening 5 can be made inconspicuous when the date wheel 15 is obscured by being the same color as the dial 3.

  The piezoelectric actuator 360 that operates the shutter 16 includes a pair of piezoelectric elements 37 and 38 (piezo elements) provided on the base portion 36, a magnet 39 (moving member stopping means), and a rotor 26 (moving member). I have. The shutter 16 is fixedly provided on a first rotating shaft portion 26a that is a rotating shaft of a rotor 26 (moving member) that rotates around the first rotating shaft R1, and interlocks with the rotational movement of the rotor 26. Thus, the structure is rotated within a range of 180 degrees (first angle range).

  FIG. 5 is a perspective view for explaining an operation mechanism of the shutter 16 in the analog electronic timepiece 100 of the present embodiment.

  The piezoelectric elements 37 and 38 and the rotor 26 are in contact with each other when the rotor 26 is located at both end positions of 180 degrees where the rotor 26 can rotate. The rotor 26 includes at least a ferromagnetic material such as iron, and in a state where the rotor 26 is in contact with any one of the piezoelectric elements 37 and 38, the rotor 26 is attracted by the magnet 39 by being magnetized, and the contact state is maintained.

The piezoelectric elements 37 and 38 are of a stacked type, and one end (fixed end) is fixed to the base portion 36, and the other is expanded by applying a voltage supplied from the booster circuit 52. The position of the end (open end, one end) changes. Due to this change in position, a force for pushing out the rotor 26 in contact with one piezoelectric element 37 is instantaneously generated. It rotates 180 degrees together with the first rotation shaft portion 26a and the shutter 16 by the given momentum in the rotation direction. Then, by attracting the magnet 39 again, the movement stops when it comes into contact with the other piezoelectric element 38.
That is, the shutter 16 of the analog electronic timepiece 100 of the present embodiment is configured to be stationary in two display states related to both ends rotated 180 degrees.

  At this time, if the attractive force is too strong, the magnet 39 and the rotor 26 are difficult to rotate reliably due to the extension of the piezoelectric elements 37 and 38, and if the attractive force is too weak, the magnet 39 and the rotor 26 are easily separated by an external impact. End up. Accordingly, the strength of the magnet 39 is appropriately adjusted. Alternatively, an electromagnet is used as the magnet 39, and the magnetic force is erased when the rotor 26 is separated, or the permanent magnet and the electromagnet are used together to cancel the attractive force of the permanent magnet when the rotor 26 is separated. Or may be generated.

[Modification 1]
6 and 7 are a plan view and a perspective view, respectively, showing Modification 1 of the shutter 16a and the piezoelectric actuator 360 in the analog electronic timepiece 100 of the first embodiment.

  In the piezoelectric actuator 360 according to the first modification, the pair of piezoelectric elements 37 and 38 are disposed so as to be orthogonal to each other. The rotor 26 can be rotated 90 degrees between the open ends of the piezoelectric elements 37 and 38. Magnets 39a and 39b are provided at the open ends of the piezoelectric element 37 and the piezoelectric element 38, respectively. In this case, since the shutter 16a (moving sign part) is exposed from the opening 5 only in the range of 180 degrees, only the range of 180 degrees or the range of 90 degrees where the opaque member is used as shown in FIG. It can be made into the shape provided in.

Also, as shown in FIG. 7, the shutter 16a can be used to show other information instead of simply being used as a shield for date signs. In the analog electronic timepiece 100a, a sign “R / C” indicating that the standard radio wave is being received is provided on the upper surface of the shutter 16a, and the sign is exposed by rotating the shutter 16a when the standard radio wave is received. By doing so, the user is notified that the standard radio wave is being received.
Here, by changing the angle formed by the piezoelectric elements 37 and 38, the rotation angle of the shutter 16a can be set to an appropriate angle other than 90 degrees or 180 degrees.

  As described above, the analog electronic timepiece 100 according to the first embodiment is expanded by applying the predetermined voltage supplied from the dial 3 provided with the opening 5 and the booster circuit 52, and each open end is extended. The stacked type piezoelectric elements 37 and 38 that are displaced, and the position where the piezoelectric elements 37 and 38 are pushed by the displacement of the open ends are separated from the open end of one of the piezoelectric elements 37 and contact the open end of the other piezoelectric element 38. The moving rotor 26, the magnet 39 for maintaining the contact state between the rotor 26 and the open ends of the piezoelectric elements 37 and 38, and the shutter 16 that rotates with the rotational movement of the rotor 26 are shielded or exposed open. The date indicator of the date indicator 15 and the information indicator on the shutter 16a and the CPU 41 for controlling the exposure state of these indicators by controlling the application of the predetermined voltage are provided. Since the response speed to the voltage application of the piezoelectric elements 37 and 38 is very fast, the rotor 26 performs a rotational operation by quickly obtaining a momentum by a minute displacement of the open end. Therefore, since the display state of the sign is also quickly changed as compared with the rotating operation of the rotating disk using the conventional stepping motor, the user can quickly know the change of the display contents.

  Further, by rotating the shutter 16 by the piezoelectric actuator 360 that imparts momentum to the rotor 26 using the piezoelectric elements 37 and 38, the configuration related to the operation of the shutter 16 can be reduced in size. Therefore, even an information display device having a small space such as a small analog electronic timepiece can improve the operation speed without increasing the size and weight.

  In addition, since the rotor 26 can be maintained in contact with the open ends of the piezoelectric elements 37 and 38 using the magnet 39, the rotor 26 is surely secured by the displacement of the piezoelectric elements 37 and 38 having a small displacement. You can receive power.

  In addition, since the position of the rotor 26 is maintained by the magnetic force by using the magnet 39, even if the analog electronic timepiece 100 is portable and the posture changes, it can cope with the influence of gravity. .

  Further, since the rotor 26 is configured to rotate the shutters 16 and 16a by rotating around the first rotation shaft portion 26a by a predetermined angle, it is difficult to apply extra resistance such as frictional force to the rotor 26 and smoothly. The shutters 16 and 16a can be rotated.

  In addition, since the rotation of the rotor 26 and the rotation of the shutter 16 are performed in conjunction with each other, it is not necessary to consider a loss related to the transmission of force from the rotor 26 to the shutter 16.

  In addition, since the information sign is directly provided on the upper surface of the shutter 16a, in the case of switching relating only to the presence / absence of the sign display, there is no need to provide any other extra configuration, and the information sign display exposure can be performed promptly. Alternatively, concealment can be switched.

  In addition, since the display of the sign of the date wheel 15 provided further below the shutter 16 is switched by the shutter 16, the restriction on the design of the dial 3 is reduced by quickly hiding the sign that does not need to be displayed. be able to.

  In addition, since the display of the sign of the lower date wheel 15 can be switched by the shutter 16, there are many types of contents to be displayed, and high speed is not required for switching, but the presence or absence of display is related. When it is desired to perform switching quickly, it is possible to avoid an increase in the weight and size of the apparatus by appropriately arranging the necessary components.

  In particular, by applying the above invention to the analog electronic timepiece 100, visibility can be improved while avoiding deterioration of portability.

[Second Embodiment]
Next, an analog electronic timepiece 100a according to the second embodiment will be described. The analog electronic timepiece 100a is the same except that the internal configuration related to the operation of the shutter 16 is different from the internal configuration of the portion of the analog electronic timepiece 100. The external configuration of the analog electronic timepiece 100a of the second embodiment is the same as that of the analog electronic timepiece 100 of the first embodiment shown in FIG.

FIG. 8 is a block diagram showing the internal configuration of the analog electronic timepiece 100a.
The internal configuration of the analog electronic timepiece 100a is the same as that of the analog electronic timepiece 100 except that a rotation operation unit 27 (a connecting and moving member) is provided between the piezoelectric actuator 360 and the shutter 16. The description is omitted.

FIG. 9A is a plan view and FIG. 9B is a side view for explaining the configuration related to the operation of the shutter 16 in the analog electronic timepiece 100a.
The rotor 26 of the present embodiment is provided with an operating piece 26b extending perpendicularly to the rotation direction within the rotation surface. Further, there are provided a rotation operation unit 27 that rotates around the second rotation axis R2 adjacent to the first rotation axis R1, and a leaf spring 28 (rotation stationary means, elastic member) for stationary the rotation operation unit 27. ing. The rotation operation unit 27 of the present embodiment has, for example, a cross shape having four arms (projections) at equal intervals, and the operation piece 26b is approximately 90 from the contact position with the piezoelectric elements 37 and 38. It is arranged so as to collide with one arm when it is rotated.

When the operating piece 26b collides with the arm of the rotation operation unit 27, the momentum is exchanged between the operation piece 26b and the rotation operation unit 27, and the rotation operation unit 27 is rotated. When the rotation operation unit 27 rotates 45 degrees, the rotation operation unit 27 further rotates 45 degrees and stops due to the elastic force of the leaf spring 28. In the analog electronic timepiece 100a, the shutter 16 is fixedly provided to the second rotation shaft portion 27a that is the rotation shaft of the rotation operation portion 27, and the second rotation shaft portion 27a is 90 degrees (second angle range). By rotating, the shutter 16 rotates 90 degrees. That is, in the analog electronic timepiece 100a of the present embodiment, the rotation angle of the first rotation axis R1 and the rotation angle of the second rotation axis R2 (that is, the shutter 16) are independent.
Here, the rotation angle related to opening and closing of the shutter 16 can be changed by appropriately setting the angular interval of the arms of the rotation operation unit 27. Further, since there are only two arms in contact with the operation piece 26b, when the stationary position of the rotation operation unit 27 is fixed by a method other than the leaf spring 28 (for example, a magnet is used as in the case of the rotor 26). However, it is not necessary to provide other arms.

[Modification 2]
FIG. 10A is a plan view and FIG. 10B is a side view showing a second modification of the operation mechanism of the shutter 16 in the analog electronic timepiece 100a of the second embodiment.

  In the piezoelectric actuator 360 of the second modification, the piezoelectric element 37 and the magnet 39a, the piezoelectric element 38 and the magnet 39b are arranged to face each other, and the rotor 26 reciprocates between the piezoelectric elements 37 and 38. In the arrangement of the piezoelectric elements 37 and 38 in the modified example 2, the force that pushes the rotor 26 due to the displacement of the piezoelectric elements 37 and 38 is not applied to the rotation direction of the rotor 26 as the rotation angle of the rotor 26 increases. Therefore, it is preferable that the rotation angle of the rotor 26 is small. That is, the rotor 26 can be rotated more efficiently by shortening the interval between the piezoelectric elements 37 and 38 and / or increasing the distance (rotation radius) from the first rotation shaft portion 26a to the rotor 26. I can do it.

  As described above, the analog electronic timepiece 100a according to the second embodiment is provided with the operating piece 26b in the direction perpendicular to the rotating direction within the rotating surface of the rotor 26, and contacts the operating piece 26b when the rotor 26 rotates. Thus, a rotary operation unit 27 is provided to obtain momentum. Then, the shutter 16 is opened and closed according to the rotation of the rotation operation unit 27. Accordingly, since the moving amount of the rotor 26 and the moving amount related to the opening and closing of the shutter 16 can be set separately, the layout design of the piezoelectric actuator 360 is facilitated.

  In addition, since the opening / closing control of the shutter 16 is performed by rotating the rotation operation unit 27, it is possible to switch at high speed while maintaining the appearance and the appearance of the shutter 16 similar to the opening / closing control by the conventional stepping motor. It becomes.

  In addition, since the leaf spring 28 is disposed so as to be surely stopped at the position where the set angle is rotated when the cross-shaped rotation operation unit 27 is rotated, the minute displacement of the piezoelectric elements 37 and 38 is prevented. It is possible to reliably complete the display changing operation and maintain it in that state.

  Further, since the elastic member such as the leaf spring 28 is used to stand still at the rotation end position, it is not necessary to control the operation of the leaf spring 28 during the rotation of the shutter 16, and the processing is simplified. I can do it.

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 rotation operation of the shutter 16 is performed by rotating the rotor 26 around the first rotation axis R1, but the piezoelectric elements 37 and 38 are opposed to each other as in the second modification. In such a case, since the linear movement is possible, the moving member may be linearly reciprocated on the guide rail together with the shutter 16 instead of the rotor 26.

  In the above-described embodiment, the shutter 16 is rotated by operating the rotor 26. However, the shutter 16 is configured and arranged so that the shutter 16 is directly rotated by extension of the piezoelectric elements 37 and 38. May be.

  Further, in the above-described embodiment, the shutter 16 is partially described by using an opaque member or by performing an opaque process on the upper surface, but is not limited thereto. For example, only two types of semi-transmissive members that transmit light of different wavelengths (for example, red and blue) are used, and two types of information are added to the same date sign, for example, AM and PM respectively. The form which exposes the semi-transmissive member to perform may be sufficient. Further, it can be used not as a shutter for opening and closing the lower sign, but as a movable part for switching between two kinds of signs provided on the impermeable member itself.

  In the above-described embodiment, the configuration in which the rotor 26 is brought into contact with the piezoelectric elements 37 and 38 using the magnet 39 has been described as an example. However, the present invention is not limited to this. For example, a stopper such as a spring that is released or loosened simultaneously with the application of voltage to the piezoelectric elements 37 and 38 may be used.

  Further, in the above embodiment, the configuration is shown in which the date mark for one day on the date wheel 15 is exposed from the opening 5, but the date for a predetermined number of days before and after may be exposed together. Alternatively, a rotating display board related to information other than the date indicator such as a day indicator may be selectively exposed.

  Moreover, although the said embodiment demonstrated and demonstrated the example in which the opening part 5 was provided in one place, the structure which changes the some label | marker and scale exposed from a some opening part at once may be sufficient. Further, the size of the rotary plate provided with the shutter and the sign can be changed as appropriate according to the position and size of the opening.

  Further, in the above embodiment, the date wheel 15 is rotated so that the sign exposed from the opening 5 can be appropriately changed. However, one sign fixed at a position corresponding to the opening 5 is simply set by the shutter 16. It may be in the form of shielding or opening.

In the above embodiment, the wristwatch-type analog electronic timepieces 100 and 100a have been described as examples. However, the present invention is not limited thereto. Other portable clocks, table clocks, wall clocks, and the like may be used, and information display devices other than analog display clocks, for example, electronic pedometers and blood pressure monitors may be used.
In addition, details such as the specific configuration, structure, and operation procedure described in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.

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 display panel provided with an opening;
A pair of piezoelectric elements that are extended by applying a predetermined voltage and each of which is displaced at one end;
A moving member that moves from a position in contact with the one end of the one piezoelectric element to a position in contact with the one end of the other piezoelectric element in accordance with the displacement of the one end;
A moving member stopping means for maintaining a contact state between the moving member and one of the pair of piezoelectric elements;
A sign that changes the state of exposure from the opening according to the movement of the moving member;
An information display device comprising: display control means for controlling application of the predetermined voltage.
<Claim 2>
The moving member includes a ferromagnetic material,
The information display device according to claim 1, wherein the moving member stopping means is a magnet.
<Claim 3>
3. The information display device according to claim 1, wherein the movement of the moving member is an operation of rotating around a predetermined first rotation axis within a predetermined first angle range.
<Claim 4>
The marker is provided on the upper surface, and includes a moving marker portion fixed to the moving member,
The exposure state of the sign from the opening is switched as the moving sign moves with respect to the opening in conjunction with the movement of the moving member. The information display device according to claim 1.
<Claim 5>
The sign is provided on the upper surface, and is arranged at a position corresponding to the opening;
A shutter portion provided between the marker portion and the opening, and fixed to the moving member;
The shutter is selectively shielded or opened by moving the shutter with respect to the opening in conjunction with the movement of the moving member. The information display device described.
<Claim 6>
A plurality of labels are arranged in a ring around the predetermined rotation axis, and a predetermined number of labels are selectively placed at positions corresponding to the openings by rotating the label parts. The information display device according to claim 5, wherein the information display device is arranged.
<Claim 7>
A moving connection member that moves to a predetermined position according to the moving direction of the moving member by obtaining a momentum by contacting the moving member in the middle of the movement of the moving member;
The information display device according to any one of claims 1 to 3, wherein an exposure state of the sign is switched from the opening according to the movement of the connecting and moving member.
<Claim 8>
The information display device according to claim 7, wherein the connecting and moving member rotates around a second rotation axis within a predetermined second angle range.
<Claim 9>
The information display device according to claim 8, further comprising: a rotary stationary means for stationary the connection moving member at angular positions at both ends of the second angle range.
<Claim 10>
10. The information display according to claim 9, wherein the rotary stationary means is an elastic member that applies a force in a direction from a predetermined intermediate angular position to an angular position at both ends in the second angular range to the connection moving member. apparatus.
<Claim 11>
The marker is provided on the upper surface, and includes a moving marker part fixed to the connecting and moving member,
The exposure state of the sign from the opening is switched as the moving sign moves relative to the opening in conjunction with the movement of the connecting and moving member. The information display device according to any one of the above.
<Claim 12>
The sign is provided on the upper surface, and is arranged at a position corresponding to the opening;
A shutter portion provided between the marker portion and the opening, and fixed to the connecting and moving member;
The said shutter part moves to the said opening part in conjunction with the movement of the said connection movement member, and selectively shields or open | releases the said label | marker. The information display device described in 1.
<Claim 13>
A plurality of labels are arranged in a ring around the predetermined rotation axis, and a predetermined number of labels are selectively placed at positions corresponding to the openings by rotating the label parts. The information display device according to claim 12, wherein the information display device is arranged.
<Claim 14>
An information display device according to any one of claims 1 to 13,
Multiple guidelines,
A time counting means for counting time;
Pointer control means for operating the plurality of hands according to the time counted by the time measuring means to indicate the time;
An analog electronic timepiece characterized by comprising:
<Claim 15>
A pair of piezoelectric elements that are extended by applying a predetermined voltage and each of which is displaced at one end;
A moving member that moves from a position in contact with the one end of the one piezoelectric element to a position in contact with the one end of the other piezoelectric element in accordance with the displacement of the one end;
A piezoelectric actuator comprising: a moving member stopping means for maintaining a contact state between the moving member and one of the pair of piezoelectric elements.

2 Main body 3 Dial 4 Bezel 5 Opening 6 Casing 7 Band 12 Second hand 13 Minute hand 14 Hour hand 15 Date wheel 16 Shutter 16a Shutter 22 Train train mechanism 23 Train train mechanism 24 Train train mechanism 25 Train train mechanism 25a Gear 25b Gear 26 Rotation Child 26a First rotating shaft portion 26b Operating piece 27 Rotating operating portion 27a Second rotating shaft portion 32 Stepping motor 34 Stepping motor 360 Piezoelectric actuator 36 Base portion 37 Piezoelectric element 38 Piezoelectric element 39 Magnet 39a Magnet 39b Magnet 41 CPU
42 ROM
43 RAM
44 Oscillator 45 Divider 46 Clock circuit 47 Drive circuit 48 Drive unit 51 Power supply unit 52 Booster circuit 53 Operation unit 54 Radio wave receiver 55 Antenna 100 Analog electronic timepiece 100a Analog electronic timepiece R1 First rotation axis R2 Second rotation axis S1 ~ S3 push button switch SR crown

Claims (15)

A display panel provided with an opening;
A pair of piezoelectric elements that are extended by applying a predetermined voltage and each of which is displaced at one end;
A moving member that moves from a position in contact with the one end of the one piezoelectric element to a position in contact with the one end of the other piezoelectric element in accordance with the displacement of the one end;
A moving member stopping means for maintaining a contact state between the moving member and one of the pair of piezoelectric elements;
A sign that changes the state of exposure from the opening according to the movement of the moving member;
An information display device comprising: display control means for controlling application of the predetermined voltage. The moving member includes a ferromagnetic material,
The information display device according to claim 1, wherein the moving member stopping means is a magnet.   3. The information display device according to claim 1, wherein the movement of the moving member is an operation of rotating around a predetermined first rotation axis within a predetermined first angle range. The marker is provided on the upper surface, and includes a moving marker portion fixed to the moving member,
The exposure state of the sign from the opening is switched as the moving sign moves with respect to the opening in conjunction with the movement of the moving member. The information display device according to claim 1. The sign is provided on the upper surface, and is arranged at a position corresponding to the opening;
A shutter portion provided between the marker portion and the opening, and fixed to the moving member;
The shutter is selectively shielded or opened by moving the shutter with respect to the opening in conjunction with the movement of the moving member. The information display device described. A plurality of labels are arranged in a ring around the predetermined rotation axis, and a predetermined number of labels are selectively placed at positions corresponding to the openings by rotating the label parts. The information display device according to claim 5, wherein the information display device is arranged. A moving connection member that moves to a predetermined position according to the moving direction of the moving member by obtaining a momentum by contacting the moving member in the middle of the movement of the moving member;
The information display device according to any one of claims 1 to 3, wherein an exposure state of the sign is switched from the opening according to the movement of the connecting and moving member. The information display device according to claim 7, wherein the connecting and moving member rotates around a second rotation axis within a predetermined second angle range.   The information display device according to claim 8, further comprising: a rotary stationary means for stationary the connection moving member at angular positions at both ends of the second angle range.   10. The information display according to claim 9, wherein the rotary stationary means is an elastic member that applies a force in a direction from a predetermined intermediate angular position to an angular position at both ends in the second angular range to the connection moving member. apparatus. The marker is provided on the upper surface, and includes a moving marker part fixed to the connecting and moving member,
The exposure state of the sign from the opening is switched as the moving sign moves relative to the opening in conjunction with the movement of the connecting and moving member. The information display device according to any one of the above. The sign is provided on the upper surface, and is arranged at a position corresponding to the opening;
A shutter portion provided between the marker portion and the opening, and fixed to the connecting and moving member;
The said shutter part moves to the said opening part in conjunction with the movement of the said connection movement member, and selectively shields or open | releases the said label | marker. The information display device described in 1. A plurality of labels are arranged in a ring around the predetermined rotation axis, and a predetermined number of labels are selectively placed at positions corresponding to the openings by rotating the label parts. The information display device according to claim 12, wherein the information display device is arranged. An information display device according to any one of claims 1 to 13,
Multiple guidelines,
A time counting means for counting time;
Pointer control means for operating the plurality of hands according to the time counted by the time measuring means to indicate the time;
An analog electronic timepiece characterized by comprising: A pair of piezoelectric elements that are extended by applying a predetermined voltage and each of which is displaced at one end;
A moving member that moves from a position in contact with the one end of the one piezoelectric element to a position in contact with the one end of the other piezoelectric element in accordance with the displacement of the one end;
A piezoelectric actuator comprising: a moving member stopping means for maintaining a contact state between the moving member and one of the pair of piezoelectric elements.