JP4779532B2 - Electrostatic motor and clock module using the same - Google Patents

Description

  The present invention relates to an electrostatic motor and a timepiece module using the same.

  Some conventional electrostatic motors are applied to a pointer type timepiece (see, for example, Patent Document 1). In this electrostatic motor, an electrode provided at each tip of hour, minute and second hands having different lengths, and a plurality of each provided on three concentric circles corresponding to the tip of each hand on the upper surface of the dial. Each needle is rotated clockwise by a Coulomb attractive force and a Coulomb repulsive force generated between the electrodes.

JP 2005-127964 A

However, in the conventional electrostatic motor described above, three pointers (rotors) are provided on the dial (stator) and electrodes are provided at the tips of the needles. However, there is a problem that the structure for feeding the rotor and the power supply to the rotor side becomes complicated and the degree of freedom in design is small.
In addition, a pointer-type electronic timepiece that displays time by moving the hands using an electromagnetic motor divides the rotation of the electromagnetic motor by a gear, and moves the hands for each of the second hand, the minute hand, and the hour hand. In that case, it is necessary to mount a large number of gears in order to divide the rotation, the structure becomes complicated, and in order to reduce the size, high-precision fine processing of the gears is required.

  Accordingly, an object of the present invention is to provide an electrostatic motor having a large design freedom and a simple structure, and a timepiece module using the same.

To achieve the above object, an electrostatic motor according to the present invention includes a stator having a plurality of electrodes on a plurality of concentric circles having different radii, and a plurality of the plurality of electrodes arranged on the stator so as to be rotatable relative to each other. And a plurality of rotors each having a ring-shaped resistor layer at a corresponding portion of each electrode on the concentric circles.
The watch module of the present invention includes a stator having a plurality of electrodes on a plurality of concentric circles having different radii, and a plurality of electrodes on the plurality of concentric circles, which are stacked on the stator in a mutually rotatable manner. An electrostatic motor including a plurality of rotors each having a ring-shaped resistor layer in a corresponding portion of each of the above is used.

  According to the present invention, due to the Coulomb attractive force and the Coulomb repulsive force generated between the plurality of electrodes arranged on the same circumference of the stator and the corresponding ring-shaped resistor layer of the rotor, the rotor Therefore, it is possible to provide an electrostatic motor having a simple structure and a simple structure and a timepiece module using the same.

(First embodiment)
FIG. 1 shows a cross-sectional view of a main part of an example of a pointer type timepiece having an electrostatic motor as a first embodiment of the present invention. This pointer type timepiece includes an electrostatic motor 1. The electrostatic motor 1 includes a case 2 and a case cover 3. In the case 2, a stator 4, a second hand rotor 5, a minute hand rotor 6 and an hour hand rotor 7 are provided in this order from the bottom. Details of the stator 4 and the rotors 5 to 7 will be described later.

  At the center of each of the rotors 5 to 7, lower end portions of a rod-shaped second hand shaft 8, a cylindrical minute hand shaft 9, and a cylindrical hour hand shaft 10 are attached. The hour hand shaft 10 protrudes above the dial 11 through the case cover 3 and the case cover hole 3a and the dial hole 11a provided at the center of the dial 11 provided on the case cover 3 in a rotatable manner. The proximal end portion of the hour hand 12 is attached to the protruding portion of the hour hand shaft 10.

  The minute hand shaft 9 penetrates through the hour hand shaft 10 so as to rotate and protrudes above the hour hand shaft 10, and a proximal end portion of the minute hand 13 is attached to the protruding portion of the minute hand shaft 9. The second hand shaft 8 passes through the minute hand shaft 9 so as to be rotatable, and protrudes upward from the minute hand shaft 9. A proximal end portion of the second hand 14 is attached to the protruding portion of the second hand shaft 8.

  Next, the stator 4 will be described. FIG. 2 shows a plan view of the stator 4. The stator 4 includes an upper substrate 21, an intermediate substrate 22, and a lower substrate 23 made of an organic material such as polyimide, for example. The upper substrate 21 has a circular shape, and the middle substrate 22 has the same circular shape as the upper substrate 21. The lower substrate 23 has a shape in which a protruding portion 23 a is provided at a predetermined position of the same circular portion as the upper substrate 21. And these substrates 21-23 are mutually adhere | attached and laminated | stacked through the adhesive agent which is not shown in figure.

  On the three concentric circles having different radii on the upper surface of the upper substrate 21, a plurality of second hand electrodes 24, minute hand electrodes 25, and hour hand electrodes 26 made of aluminum metal or the like are provided at equal intervals in order from the inside. ing. Here, the case where the number of each electrodes 24-26 is the same is demonstrated. The shape of each electrode 24 to 26 is a wedge shape that gradually becomes wider from the inside toward the outside. The length of each electrode 24 to 26 in the radial direction is the same, and the width of each electrode 24 to 26 is the outer side. Is getting bigger. Here, in FIG. 2, the electrodes 24 to 26 and the angle between the gaps between the electrodes 24 to 26 are illustrated as 5 ° so that the electrodes can be easily seen. In this case, if the pitch of one electrode is a second hand, it corresponds to 1 second, if it is a minute hand, 1 minute, and if it is an hour hand, it corresponds to 12 minutes. Of course, a smoother movement may be realized at an angle smaller than that.

  Next, FIG. 3 shows an enlarged plan view of a part of the upper substrate 21. On the upper surface of the upper substrate 21, ring-shaped power supply wirings 27 to 29 are provided outside the arrangement area of the electrodes 24 to 26, and ring-shaped power supply wirings are provided inside the arrangement area of the electrodes 24 to 26. 30 to 32 are provided. In the upper substrate 21, vertical conduction portions 27 a to 29 a are provided at each predetermined location of the power supply wirings 27 to 29, and vertical conduction portions 30 a to 32 a are provided at each predetermined location of the power supply wirings 30 to 32. Is provided.

  Each electrode 24-26 is three-phase wired. In other words, every third hand electrode 24 is connected to the power supply wirings 27 and 30 and the vertical conduction portion 33 provided on the upper substrate 21 near the outside of the predetermined second hand electrode 24. Every three minute hand electrodes 25 are connected to power supply wirings 28 and 31 and a vertical conduction portion 34 provided on the upper substrate 21 in the vicinity of the outside of the predetermined minute hand electrode 25. Every three hour hand electrodes 26 are connected to power supply wirings 29 and 32 and a vertical conduction portion 35 provided on the upper substrate 21 in the vicinity of the predetermined hour hand electrode 26.

  Next, FIG. 4 shows an enlarged plan view of a part of the middle substrate 22. Ring-shaped power supply wirings 33 a to 35 a are provided on three concentric circles having different radii on the upper surface of the middle substrate 22. In the middle substrate 22, vertical conduction portions 33 b to 35 b are provided in one predetermined place of the power supply wirings 33 a to 35 a. Connection pads 33c to 35c are provided at predetermined intervals in a plurality of predetermined positions of the power supply wirings 33a to 35a. The connection pads 33c to 35c are connected to the vertical conduction portions 33 to 35 shown in FIG. In the middle substrate 22, vertical conductive portions 27 b to 32 b are provided in portions corresponding to the vertical conductive portions 27 a to 32 a shown in FIG. 3. The vertical conduction parts 27b to 32b are connected to the vertical conduction parts 27a to 32a shown in FIG.

  Next, FIG. 5 shows an enlarged plan view of a part of the lower substrate 23. On the upper surface of the lower substrate 23, connection pads 27 c to 32 c and 33 d to 35 d are provided in portions corresponding to the vertical conduction portions 27 b to 35 b shown in FIG. 4. The connection pads 27 c to 32 c and 33 d to 35 d are It is connected to the vertical conduction parts 27b to 35b shown in FIG. Nine external connection terminals 36 are provided at equal intervals on the upper surface of the projecting portion 23 a of the lower substrate 23, and each external connection terminal 36 is connected via nine lead wires 37 provided on the upper surface of the lower substrate 23. Are connected to the connection pads 27c to 32c and 33d to 35d.

  The above electrical connection relationship will be briefly described. The three external connection terminals 36 on the left side shown in FIG. 5 have every three second hand electrodes 24 shown in FIG. 3 is connected to every three minute hand electrodes 25 shown in FIG. 3, and the right three external connection terminals 36 shown in FIG. 5 are connected to every third hour hand electrode 26 shown in FIG. Has been. Thereby, each electrode 24-26 is three-phase wiring. 5 may be provided on the lower surface of the middle substrate 22, and the stator 4 may be constituted by a two-layer substrate such as glass epoxy.

  Next, FIGS. 6 to 8 show plan views of the second hand rotor 5, the minute hand rotor 6, and the hour hand rotor 7, respectively. Each of the rotors 5 to 7 includes circular base films 5a, 6a, and 7a made of polyethylene naphthalate, polyethylene terephthalate, polyimide, or the like. The radii of the base films 5a, 6a and 7a are different from each other and increase in this order, and ring-shaped resistor layers 5b, 6b made of carbon or the like are formed on the outer peripheral portions of the upper surfaces of the base films 5a, 6a and 7a. 7b is provided. The resistor layers 5b, 6b, and 7b can be formed by, for example, a method of applying a urethane resin (binder) containing carbon powder (conductive filler) only to a necessary portion. A second hand shaft mounting hole 5c, a minute hand shaft mounting hole 6c, and an hour hand shaft mounting hole 7c are provided at the center of each base film 5a, 6a, 7a. Considering the load at the time of driving, it is desirable that the rotor is light, and the rotor is formed thin (for example, about 16 μm to 25 μm thick). However, when the thickness is reduced, the strength is reduced and the film is easily deformed, and the flatness is impaired, which may cause resistance during rotation. In this case, in particular, even when polyethylene naphthalate is made thin, it is strong in strength and has excellent flatness. Also, good results have been obtained in prototype experiments, and it is a particularly suitable material for the base film.

  Referring to FIG. 1, the outer diameter and inner diameter of the resistor layer 5 b of the second hand rotor 5 are the same as the outer diameter and inner diameter of the region where the second hand electrode 24 is disposed on the stator 4. The outer diameter and inner diameter of the resistor layer 6 b of the minute hand rotor 6 are the same as the outer diameter and inner diameter of the region where the minute hand electrode 25 is disposed in the stator 4. The outer diameter and inner diameter of the resistor layer 7 b of the hour hand rotor 7 are the same as the outer diameter and inner diameter of the region where the hour hand electrode 26 is disposed in the stator 4.

  The rotors 5, 6, and 7 are stacked on the stator 4 so as to be rotatable relative to each other in order from the smallest radius. Therefore, the resistor layer 5 b of the second hand rotor 5 is disposed on the second hand electrode 24 arrangement region of the stator 4, and the resistor layer 6 b of the minute hand rotor 6 is disposed of the minute hand electrode 25 of the stator 4. The resistor layer 7 b of the hour hand rotor 7 is disposed on the region of the hour hand electrode 26 of the stator 4.

FIG. 9 is a diagram showing a configuration example of an electronic circuit provided in the pointer type electronic timepiece as the first embodiment of the invention.
As shown in FIG. 9, the electronic circuit of the pointer-type electronic timepiece includes an oscillation circuit 51, a frequency dividing circuit 52, a control circuit 53, a second hand driving circuit 54, a minute hand driving circuit 55 and a second hand driving circuit 56. The oscillation circuit 51 is connected to the frequency dividing circuit 52. The control circuit 53 is connected to the frequency dividing circuit 54, the second hand driving circuit 54, the minute hand driving circuit 55, and the hour hand driving circuit 56. The frequency dividing circuit 52 is connected to the second hand drive circuit 54, the minute hand drive circuit 55, and the hour hand drive circuit 56.

  The second hand drive circuit 54 is connected to the second hand electrode 24 (see FIG. 3) of the stator 4, and the minute hand drive circuit 55 is connected to the minute hand electrode 25 (see FIG. 3) of the stator 4, and the hour hand drive circuit 56. Is connected to the hour hand electrode 26 of the stator 4 (see FIG. 3).

  The oscillation circuit 51 outputs a time reference signal to the frequency dividing circuit 52 using a crystal resonator (not shown) or the like as the original oscillation. The frequency dividing circuit 52 receives the signal from the oscillation circuit 51 and divides the frequency. The second hand driving circuit 54 applies a voltage according to a driving method described later to the hour hand electrode 24 in accordance with the signal output from the frequency dividing circuit 52, and the minute hand driving circuit 55 is similarly operated in accordance with the signal output from the frequency dividing circuit 52. A voltage is applied to the minute hand electrode 25, and the second hand drive circuit 56 similarly applies a voltage between the hour hand electrodes 26 in accordance with the signal output from the frequency dividing circuit 52.

  The control circuit 53 is connected to an operation button (not shown). For example, the operation button performs an operation for moving the hands to adjust the time.

  Next, an example of a method for driving the second hand rotor 5 (second hand 14) will be described as a representative of the pointer type timepiece. Here, when the applied voltage to the three-phase wired second hand electrode 24 on the stator 4 is, for example, a positive voltage, a negative voltage, or 0 V, in the following description, the second hand electrode 24 of the stator 4 is applied to the second hand electrode 24. Voltage (+,-, 0) is applied. The voltage application state is as shown in the lower diagram of FIG. Here, in the stator 4 shown in the lower diagram of FIG. 10A, each cell divided by a solid line corresponds to each second hand electrode 24 (the same applies hereinafter). FIG. 10 shows only the stator side 6 poles and the rotor side 3 poles.

  In the charging process, when a voltage (+,-, 0) is applied to the second hand electrodes 24 (three electrodes from the left side, the same applies hereinafter) of the stator 4 as shown in the lower diagram of FIG. The charge opposite to the charge of the second hand electrode 24 is charged (induced) in the region of the resistor layer 5b of the second hand rotor 5 facing the second hand electrode 24 (initial charge). Here, in the resistor layer 5b of the second hand rotor 5 shown in the upper diagram of FIG. 10A, each cell divided by a dotted line is a region corresponding to each second hand electrode 24 (the same applies hereinafter). .

  Next, in the moving process, as shown in the lower diagram of FIG. 10B, when the voltage applied to the second hand electrode 24 of the stator 4 is switched to (−, +, −), the charge of the electrode is instantaneously switched. However, since it takes a certain amount of time for the charge arrangement on the rotor side to change to a new equilibrium state, the charge on the rotor side is held immediately after switching, as shown in the upper diagram of FIG. Charge arrangement. At this time, a region where the charge in the charge region of the resistor layer 5b of the second hand rotor 5 and the charge of the second hand electrode 24 of the stator 4 immediately below the same sign appears, and a Coulomb repulsive force is generated therebetween. The coulomb repulsive force causes a force to lift the second hand rotor 5 as indicated by an arrow, and the frictional resistance between the second hand rotor 5 and the stator 4 is reduced.

  In FIG. 10B, the balance between the coulomb attractive force and the coulomb repulsive force in the lateral direction between the stator 4 and the second hand rotor 5 is lost, so that a rotational drive force in the right direction is generated. As shown in C), the second hand rotor 5 moves one pitch on the stator 4 rightward (one electrode of the second hand electrode 24) and stops.

  Next, since a part of the charge of the rotor is lost during the movement, the Coulomb force (rotational driving force) is reduced. In order to maintain this force and drive continuously, in the next charging step in the state of FIG. 10C, the second hand electrode 24 of the stator 4 as shown in the lower diagram of FIG. A voltage (0, +, −) shifted by one pitch (one electrode) in the right direction from the lower diagram in FIG. Then, as shown in the upper diagram of FIG. 10D, a charge having a polarity opposite to that of the second hand electrode 24 is recharged in a region facing the second hand electrode 24 of the resistor layer 5b of the second hand rotor 5. Is done. (Since the charge lost is a part of the whole, the recharge time may be shorter than the initial charge time.) Thereafter, the same process as described above is repeated, and the second hand rotor 5 rotates clockwise together with the second hand 14. Are rotated one pitch at a time.

  As described above, in this pointer type timepiece, between the plurality of second hand electrodes 24 arranged on the same circumference of the stator 4 and the ring-shaped resistor layer 5b of the second hand rotor 5 corresponding thereto. Since the second hand rotor 5 is rotated by the generated coulomb attractive force and coulomb repulsive force, it is not necessary to supply power to rotate the second hand rotor 5, and similarly, the minute hand rotor 6 is rotated. Also, it is not necessary to supply power to rotate the hour hand rotor 7. Furthermore, there is no restriction such as the length of the needle, the degree of freedom in design is large, and the structure can be simplified.

  Further, in the electrostatic motor 1 of the pointer type timepiece, the three rotors 5, 6, and 7 are laminated on the single stator 4 so as to be rotatable in order from the smallest radius. The motor can be made as thin as possible.

(Second Embodiment)
FIG. 11 shows a cross-sectional view of a main part of an example of a pointer type timepiece having an electrostatic motor as a second embodiment of the present invention. 1 differs from the pointer-type timepiece shown in FIG. 1 on the upper surface of the upper substrate 21 of the stator 4 between the second-hand electrode 24 placement area and the minute-hand electrode 25 placement area. A rotor support wall 41 is provided, and a ring-shaped hour hand rotor support wall 42 is provided between the minute hand electrode 25 arrangement region and the hour hand electrode 26 arrangement region. (That is, in the first embodiment, when the rotor is thinned and lightened to facilitate rotation, the rotors are deformed by their own weight and come into contact with each other, and the frictional resistance during rotation is large. In the present embodiment, this problem is improved by providing a rotor support wall. .)

  Here, the height of the minute hand rotor support wall 41 is such that the lower surface of the base film 6 a of the minute hand rotor 6 supported by the minute hand is positioned slightly above the upper surface of the resistor layer 5 b of the second hand rotor 5. The height of the hour hand rotor support wall 42 is such that the lower surface of the base film 7a of the hour hand rotor 7 supported by the hour hand rotor is slightly above the upper surface of the resistor layer 6b of the minute hand rotor 6. It is located at the height.

  In this way, the minute hand rotor 6 can be reliably prevented from coming into contact with the lower second hand rotor 5, and the hour hand rotor 7 can be securely connected to the lower minute hand rotor 6. Can be kept out of contact. That is, the rotors 5, 6, and 7 can be reliably prevented from coming into contact with each other, and the frictional resistance during driving of the rotors 5, 6, and 7 can be reduced. 6 and 7 can be easily rotated independently.

(Third embodiment)
FIG. 12 shows a cross-sectional view of a main part of an example of a pointer type timepiece having an electrostatic motor as a third embodiment of the present invention. This pointer type timepiece is different from the pointer type timepiece shown in FIG. 1 in that a circular hole 21 a slightly larger than the minute hand rotor 6 is formed in the center portion of the upper substrate 21 in the stator 4. A circular hole 22a that is slightly larger than the second hand rotor 5 is formed at the center of the second substrate 23, a second hand electrode 24 is provided on the upper surface of the lower substrate 23 in the circular hole 22a of the middle substrate 22, and the circular hole 21a of the upper substrate 21 is provided. The minute hand electrode 25 is provided on the upper surface of the middle substrate 22, and the hour hand electrode 26 is provided on the upper surface of the upper substrate 21.

In this case as well, the minute hand rotor 6 can be reliably prevented from coming into contact with the lower second hand rotor 5, and the hour hand rotor 7 can be securely connected to the lower minute hand rotor 6. It can be prevented from touching. That is, the rotors 5, 6, and 7 can be reliably prevented from coming into contact with each other, and the frictional resistance during driving of the rotors 5, 6, and 7 can be reduced. 6 and 7 can be easily rotated independently.
Further, since the minute hand rotor 6 approaches the minute hand electrode 25 on the stator 4 and the hour hand rotor 7 approaches the hour hand electrode 26 on the stator 4, the minute hand rotor 6 and the hour hand rotor 7. There is also an advantage that the rotational driving force of the is increased.

(Other embodiments)
13 to 15 are plan views showing other examples of the second hand rotor 5, the minute hand rotor 6, and the hour hand rotor 7, respectively. The difference between the rotors 5, 6, and 7 from the rotors 5, 6, and 7 shown in FIGS. 6 to 8 is that the base films 5a, 6a, and 7a in the resistor layers 5b, 6b, and 7b are almost identical. This is that two semicircular openings 5d, 6d, and 7d are formed.

  That is, the base films 5a, 6a, and 7a are formed of a ring-shaped portion below the resistor layers 5b, 6b, and 7b, a substantially straight bridge portion that spans the ring-shaped portions, and a center of these bridge portions. It has a structure provided with shaft mounting holes 5c, 6c, 7c formed in the part.

  In this case, the weights of the rotors 5, 6, and 7 are reduced by the openings 5d, 6d, and 7d, and the rotational driving force for rotating the rotors 5, 6, and 7 is the same. However, it becomes easier to rotate as the weight decreases. Note that the bridge portion is not limited to a substantially linear shape, and may be, for example, a substantially cross shape or a substantially Y shape.

  16 to 18 show plan views of still other examples of the second hand rotor 5, the minute hand rotor 6, and the hour hand rotor 7. FIG. These rotors 5, 6, and 7 are different from the rotors 5, 6, and 7 shown in FIGS. 13 to 15 in that the second resistor layer is formed on the upper surface of the bridge portion of the base films 5a, 6a, and 7a. 5e, 6e, and 7e are provided. Since the second resistor layers 5e, 6e, and 7e are not opposed to the region where the electrodes 24, 25, and 26 of the stator 4 are disposed, the Coulomb force does not act directly. Become.

  By the way, in these rotors 5, 6, and 7, since the resistor layers 5b, 5e, 6b, 6e, 7b, and 7e are provided on the entire upper surface of the base films 5a, 6a, and 7a, the manufacturing process is simplified. Can be That is, for example, a rectangular base film forming sheet is prepared, a resistor layer is formed on the entire upper surface, and the rotors 5, 6, and 7 shown in FIGS. 16 to 18 are obtained by one punching. be able to.

Further, in each of the above embodiments, the rotor may be two of the hour hand rotor and the minute hand rotor without providing the second hand. Further, depending on the application field, the number of rotors may be four or more. Further, depending on the application field, for example, in the first embodiment, the lower end portion of the shaft 8 attached so as to rotate integrally with the central portion of the rotor 5 penetrates the substrates 21 to 23 and the case 2 in a rotatable manner. Thus, the shaft 8 may be protruded also to the lower side of the case 2, and only the lower end portion of the shaft 8 is rotatably passed through the substrates 21 to 23 and the case 2, so that the shaft 8 is connected to the case 2. You may make it protrude only on the lower side.
Further, in the first and second embodiments, the example in which the bottom rotor to be stacked is the smallest is described, but the base film portion of another rotor sandwiched between the stator and the rotor. It is not necessary to take this configuration when the influence of is small.

Sectional drawing of the principal part of an example of the pointer type | mold timepiece provided with the electrostatic motor as 1st Embodiment of this invention. The top view of the stator shown in FIG. FIG. 3 is an enlarged plan view of a part of the upper substrate shown in FIG. 2. FIG. 3 is an enlarged plan view of a part of the middle substrate shown in FIG. 2. FIG. 3 is an enlarged plan view of a part of the lower substrate shown in FIG. 2. The top view of the rotor for second hands shown in FIG. The top view of the rotor for minute hands shown in FIG. The top view of the rotor for hour hands shown in FIG. The figure which shows the structural example of the electronic circuit with which the pointer type | mold electronic timepiece as 1st Embodiment of this invention was equipped. The figure shown in order to demonstrate an example of the drive method of the rotor for second hands (second hand). Sectional drawing of the principal part of an example of the pointer type | mold timepiece provided with the electrostatic motor as 2nd Embodiment of this invention. Sectional drawing of the principal part of an example of the pointer type | mold timepiece provided with the electrostatic motor as 3rd Embodiment of this invention. The top view of the other example of the rotor for second hands. The top view of the other example of the rotor for minute hands. The top view of the other example of the rotor for hour hands. The top view of the further another example of the rotor for second hands. The top view of the further another example of the rotor for minute hands. The top view of the further another example of the rotor for hour hands.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotation motor 2 Case 3 Case cover 3a Case cover hole 4 Stator 5 Second hand rotor 5a Base film 5b Resistor layer 5c Shaft mounting hole 5d Opening 5e Second resistor layer 6 Minute hand rotor 6a Base film 6b Resistor layer 6c Shaft mounting hole 6d Opening 6e Second resistor layer 7 Hour hand rotor 7a Base film 7b Resistor layer 7c Shaft mounting hole 7d Opening 7e Second resistor layer 8 Second hand shaft 9 Minute hand shaft 10 Hour hand shaft 11 Dial plate 11a Dial hole 12 Hour hand 13 Minute hand 14 Second hand 21 Upper substrate 21a Circular hole 22 Medium substrate 22a Circular hole 23 Lower substrate 24 Second hand electrode 25 Minute hand electrode 26 Hour hand electrode 27-32 Power supply wiring 27a- 32a Vertical conduction part 27b-32b Vertical conduction part 27c-32c Connection pad 33-35 Vertical conduction part 33a-35a Supply Wiring 33b to 35b Vertical conduction portion 33c to 35c Connection pad 33d to 35d Connection pad 41 Rotor support wall for minute hand 42 Rotor support wall for hour hand 51 Oscillation circuit 52 Collection circuit 53 Control circuit 54 Second hand drive circuit 55 Minute hand drive circuit 56 Hour hand drive circuit

Claims (12)

  A stator having a plurality of electrodes on a plurality of concentric circles having different radii, and a plurality of electrodes arranged on the stator so as to be rotatable with respect to each other. An electrostatic motor comprising a plurality of rotors having a body layer.   2. The electrostatic motor according to claim 1, wherein each of the plurality of concentric electrodes is provided radially about the center of the stator.   The invention according to claim 1, wherein the stator has a ring-shaped power supply wiring connected to a part of each of the plurality of concentric electrodes inside or outside the electrode arrangement region. Electrostatic motor.   2. The electrostatic motor according to claim 1, wherein radii of the plurality of rotors are different from each other, and the resistor layer is provided on each outer peripheral portion thereof.   The invention according to claim 4, wherein the rotor is formed in a ring-shaped portion provided with the resistor layer, a bridge portion spanned in the ring-shaped portion, and a central portion of the bridge portion. An electrostatic motor comprising a base film having a shaft mounting hole.   5. The electrostatic motor according to claim 4, wherein the plurality of rotors are arranged so as to be mutually rotatable on the stator in order from the smallest radius.   In the invention according to claim 6, the inner diameter of the resistor layer of the upper rotor among the plurality of rotors is larger than the outer diameter of the resistor layer of the lower rotor. An electrostatic motor.   7. The electrostatic motor according to claim 6, wherein an electrode arrangement surface of the stator is gradually increased from the inside toward the outside corresponding to the radii of the plurality of rotors.   9. The invention according to claim 8, wherein the stator includes a plurality of stacked substrates, and a circular hole larger than an outer diameter of an electrode arrangement region on the lower substrate is formed in the upper substrate. Electrostatic motor characterized by being made.   According to a fourth aspect of the present invention, each of the plurality of rotors has a shaft that rotates integrally, and the lower rotor shaft of the plurality of rotors penetrates the upper rotor shaft rotatably. An electrostatic motor characterized by having   A stator having a plurality of electrodes on a plurality of concentric circles having different radii, and a plurality of electrodes arranged on the stator so as to be rotatable with respect to each other. A timepiece module using an electrostatic motor including a plurality of rotors having a body layer.   12. The invention according to claim 11, wherein the plurality of rotors move hands of a pointer type timepiece module, and any one of an hour hand, a minute hand, and a second hand is attached to each shaft of the plurality of rotors. A clock module characterized by the above.

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