JP2007202231A - Electrostatic motor and timepiece module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a constitution of an electrostatic motor having a plurality of rotors. <P>SOLUTION: The electrostatic motor as a drive source of a minute hand 21A and a hour hand 21B in a pointer type timepiece has a structure in which an electrostatic motor component B for the hour hand has the same structure as the electrostatic motor component A for the minute hand and is laminated on the electrostatic motor component A for the minute hand. Since the electrostatic motor component has a structure for rotating the rotor 11 by a coulomb attractive force and a coulomb repulsive force generated between a plurality of electrodes 4 disposed on the same circumference of a stator 1 and a ring resistor layer 14 of the rotor 11 corresponding to the electrodes, it is unnecessary to supply power to the rotor 11, and the constitution can be simplified. A cover substrate 41 of the electrostatic motor component A for the minute hand is shared by the stator 1 of the electrostatic motor component B for the hour hand. <P>COPYRIGHT: (C)2007,JPO&INPIT

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, electrodes provided at the tip portions of hour hand, minute hand and second hand having different lengths, and a plurality of each provided on three concentric circles corresponding to the tip portions of the hands 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. There was a problem of becoming complicated. In addition, since only the tip of the needle provided with the electrode receives a driving force, the needle easily tilts due to the force in the height direction in addition to the force in the rotational direction, and the friction resistance of the needle shaft increases. There was a problem.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electrostatic motor that can reduce the frictional resistance of the rotor shaft and does not need to supply power to the rotor, and a timepiece module using the same.

In order to achieve the above object, an electrostatic motor of the present invention has a plurality of stators each having a plurality of electrodes on the same circumference, and a ring-shaped resistor layer at a portion corresponding to the electrodes of the stator. A plurality of rotors are alternately stacked, and the plurality of rotors have the same rotation center and are arranged so as to be rotatable relative to each other.
The watch module of the present invention includes a plurality of stators each having a plurality of electrodes on the same circumference, and a plurality of rotors each having a ring-shaped resistor layer at a portion corresponding to the electrodes of the stator. The plurality of rotors use electrostatic motors that are alternately stacked and have the same rotation center and are arranged to be rotatable relative to each other.

  According to the present invention, the rotor is caused by the Coulomb attractive force and the Coulomb repulsive force generated between a plurality of electrodes arranged on the same circumference of the stator and the corresponding ring-shaped resistor layer of the rotor. Since the rotor is rotated, it is not necessary to supply power to the rotor, the configuration can be simplified, and when the rotor is rotated, the entire ring-shaped resistor layer of the rotor receives a driving force. The rotation of the rotor is stabilized, and the frictional resistance of the rotor shaft can be reduced.

(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 a minute hand electrostatic motor structure A and an hour hand electrostatic motor structure B stacked thereon. The minute hand electrostatic motor component A and the hour hand electrostatic motor component B have basically the same structure. Therefore, as an example, the minute hand electrostatic motor component A will be described, and if necessary, the hour hand The electrostatic motor structure B will be described. (Hereinafter, regarding the reference signs A and B, one for both A and B is appropriately omitted in the drawing. In FIG. 1, 3, 21A, 21B, 62, 63, 64, 65 are omitted.) Except for the above, there is one for each of A and B.)

  The minute hand electrostatic motor component A includes a stator 1A, a rotor 11A, a minute hand shaft 21A, a flexible wiring board 31A, a cover board 41A, and the like. The rotor 11A can be rotated in a rotor chamber 61A that is sandwiched between the stator 1A and the cover substrate 41A and is surrounded by a flexible wiring substrate 31A and adhesive layers 51A and 52A described later. Has been placed.

  In this case, the cover substrate 41A serves to protect the stator 1A and the rotor 11A, but also serves as the stator 1B of the electrostatic motor component B for hour hand. On the other hand, the cover substrate 41B of the hour hand electrostatic motor constituting body B literally has only a function as a cover. 4B and the like are not provided on the cover substrate 41B of the electrostatic motor component B for hour hand.

  Next, FIG. 2 shows a plan view in which a part of the stator 1A (insulating film 10A) is omitted. The stator 1A includes a circular substrate 2A made of glass, ceramic, hard resin, or the like. A circular shaft supporting recess 3 is provided at the center of the upper surface of the substrate 2A (the surface on the rotor 11A side). A plurality of electrodes 4A made of an aluminum-based metal or the like are provided radially around the center of the substrate 2A on the outer peripheral portion (on the same circumference) of the substrate 2A. (In the case of the stator 1B, it is common except that the shaft support recessed portion 3 becomes the shaft insertion hole 42A.)

  In this case, the shape of the electrode 4 (A, B) (hereinafter, common to A and B, the symbols A and B are omitted as appropriate) is a wedge shape that gradually becomes wider from the inside toward the outside. . The length of the electrode 4 in the radial direction is the same. Here, in FIG. 2, the angle of the electrode 4 and the gap between the electrodes 4 is illustrated as 5 ° so that the angle can be easily seen. In this case, the pitch for one electrode corresponds to 1 minute if the minute hand and 12 minutes if the hour hand (1 second if the second hand). Of course, a smoother movement may be realized at an angle smaller than that.

  On the upper surface of the substrate 2, a power supply wiring 5 is provided in a ring shape outside the electrode 4 arrangement region, and a power supply wiring 6 is provided in a ring shape inside the electrode 4 arrangement region. Here, the electrode 4 is three-phase wired. That is, the first-phase and second-phase electrodes 4 are connected to the first-phase power supply wiring 5 and the second-phase power supply wiring 6, and the third-phase electrode 4 is electrically connected anywhere on the substrate 2. It has not been.

  The first phase and third phases made of gold, copper, etc. are formed on each predetermined one upper surface outer end portion of the first phase and second phase electrodes 4 and all upper surface outer end portions of the third phase electrodes 4. Phase protruding electrodes 7, 8, 9 are provided. Although not shown in FIG. 2, an insulating film 10 is provided on the surface excluding the outer end portion of the electrode 4 as shown in FIG. 1. The insulating film 10 is formed of aluminum oxide when the material of the electrode 4 is an aluminum-based metal.

  Next, FIG. 3 shows a plan view of the rotor 11A. (Since B is the same, the symbols A and B are omitted.) The rotor 11A includes a circular base film 12A made of polyimide, polyethylene naphthalate, polyethylene terephthalate, or the like. A circular shaft mounting hole 13A is provided at the center of the base film 12A. A ring-shaped resistor layer 14A is provided on the outer periphery of the lower surface of the base film 12A, for example, by applying a urethane resin containing carbon.

  Here, the diameter of the base film 12A is somewhat smaller than the outer diameter of the electrode 4A arrangement region of the stator 1A shown in FIG. 2 (see FIG. 1). The inner diameter of the resistor layer 14A is the same as the inner diameter of the electrode 4A arrangement region of the stator 1A shown in FIG. 2 (see FIG. 1). The diameter of the shaft mounting hole 13A is slightly smaller than the diameter of the minute hand shaft 21A shown in FIG.

  As shown in FIG. 1, the minute hand shaft 21A is press-fitted and attached to the shaft attachment hole 13A of the rotor 11A. In this case, a ring-shaped groove 22A having a circular arc cross section is provided in a portion of the outer peripheral surface of the minute hand shaft 21A that is attached to the shaft attachment hole 13A of the rotor 11A. The lower end portion of the minute hand shaft 21A is rotatably supported in the shaft supporting recess 3 of the stator 1A. Thereby, the rotor 11A is rotatably arranged on the stator 1A together with the minute hand shaft 21A.

  Here, in the rotor 11, the ring-shaped resistor layer 14 is provided not on the outer periphery of the upper surface of the base film 12 but on the outer periphery of the lower surface, because the distance between the resistor layer 14 and the electrode 4 on the stator 1. This is because the driving voltage is lowered when the driving force is the same, and the driving force is increased when the driving voltage is the same. Further, the insulating film 10 is provided on the surface of the electrode 4 of the stator 1 because the rotor 11 becomes heavy if an insulating film is provided on the surface of the resistor layer 14 of the rotor 11. This is to make it lighter.

  Next, FIG. 4 shows a plan view of the flexible wiring board 31. The flexible wiring board 31 has a structure in which an external connection wiring board portion 33 is provided at a predetermined position of the ring-shaped wiring board portion 32 so as to protrude outward. A third-phase connection wiring 34 is provided in a substantially C shape on the lower surface of the ring-shaped wiring board portion 32. In this case, the third-phase connection wiring 34 is cut in the vicinity of the external connection wiring board portion 33.

  Two first-phase and second-phase connection pads 35 and 36 are provided between both ends of the third-phase connection wiring 34 on the lower surface of the ring-shaped wiring board portion 32, and the third-phase connection wiring is provided. Third-phase connection pads 37 are provided at equal intervals at both ends of 34 and a plurality of predetermined locations. The first-phase and second-phase connection pads 35 and 36 and the third-phase connection pad 37 provided at one end of the third-phase connection wiring 34 are the external connection wiring board 33 and the ring in the vicinity thereof. Connected to the three first-phase to third-phase external connection wires 38, 39, and 40 provided on the lower surface of the planar wiring board portion 32.

  Here, as shown in FIG. 1, the outer diameter of the ring-shaped wiring board portion 32 is the same as the diameter of the stator 1, and the inner diameter is somewhat larger than the diameter of the rotor 11. The first to third phase connection pads 35, 36, and 37 shown in FIG. 4 are arranged at positions corresponding to the first to third phase protruding electrodes 7, 8, and 9 of the stator 1 shown in FIG. Has been.

  As shown in FIG. 1, the lower surface of the ring-shaped wiring substrate portion 32 of the flexible wiring substrate 31 is bonded to the outer peripheral portion of the upper surface of the stator 1 via a ring-shaped adhesive layer 51. In this state, in particular, the first to third phase protruding electrodes 7, 8, 9 of the stator 1 bite into the adhesive layer 51, and the first to third phase connection pads 35 of the flexible wiring substrate 31. , 36, 37.

  2 and FIG. 4, the first-phase external connection wiring 38 includes the first-phase connection pad 35, the first-phase protruding electrode 7, and the first-phase power supply wiring 5. Are connected to all of the first phase electrodes 4. The second-phase external connection wiring 39 is connected to all of the second-phase electrodes 4 via the second-phase connection pads 36, the second-phase protruding electrodes 8, and the second-phase power supply wiring 6. Yes. The third-phase external connection wiring 40 is connected to all of the third-phase electrodes 4 via the third-phase connection wiring 34, the third-phase connection pads 37, and the third-phase protruding electrodes 9. Yes.

  The outer peripheral portion of the lower surface of the circular cover substrate 41 is bonded to the upper surface of the ring-shaped wiring substrate portion 32 of the flexible wiring substrate 31 via a ring-shaped adhesive layer 52. The ring-shaped wiring board portion 32 of the flexible wiring board 31 functions as a part of the wall of the rotor chamber 61 together with the adhesive layers 51 and 52.

  The cover substrate 41A of the minute hand electrostatic motor constituting body A also serves as the stator 1B of the hour hand electrostatic motor constituting body B. On the minute hand electrostatic motor constituting body A, the hour hand electrostatic motor constituting body B is provided. Is provided. A cylindrical hour hand shaft 21B is attached to the center of the rotor 11B of the hour hand electrostatic motor constituting body B. A dial plate 62 is provided on the upper surface of the cover substrate 41B of the electrostatic motor component B for hour hand.

  The hour hand shaft 21B protrudes above the dial 62 through a cover hole 42B and a dial hole 63 provided at the center of the cover substrate 41B and the dial 62 of the electrostatic motor component B for hour hand. Has been. The proximal end portion of the hour hand 64 is attached to the protruding portion of the hour hand shaft 21B. The minute hand shaft 21A penetrates through the cover hole 42A of the cover substrate 41A of the minute hand electrostatic motor structure A (that is, the center portion of the stator 1B of the hour hand electrostatic motor structure B) and the hour hand shaft 21B so as to be rotatable. Thus, it protrudes above the hour hand shaft 21B. The proximal end portion of the minute hand 65 is attached to the protruding portion of the minute hand shaft 21A.

  Next, FIG. 5 is a diagram showing an example of the configuration of an electronic circuit provided in the pointer type timepiece. This electronic circuit includes an oscillation circuit 71, a frequency dividing circuit 72, a control circuit 73, a minute hand driving circuit 74, and an hour hand driving circuit 75. The oscillation circuit 71 is connected to the frequency dividing circuit 72. The frequency dividing circuit 72 is connected to the minute hand driving circuit 74 and the hour hand driving circuit 76.

  The control circuit 73 is connected to the frequency dividing circuit 72, the minute hand driving circuit 74 and the hour hand driving circuit 76. The control circuit 73 is connected to an operation button (not shown). For example, this operation button performs an operation for moving the hands to adjust the time. The minute hand drive circuit 74 is connected to the electrode 4A (see FIG. 2) of the stator 1A of the minute hand electrostatic motor structure A. The hour hand drive circuit 75 is connected to the electrode 4B of the stator 1B of the hour hand electrostatic motor constituting body B.

  The oscillation circuit 71 outputs a time reference signal to the frequency dividing circuit 72 using a crystal resonator (not shown) or the like as the original oscillation. The frequency dividing circuit 72 receives the signal from the oscillation circuit 71 and divides the frequency. The minute hand driving circuit 74 applies a voltage by a driving method described later to the electrode 4A of the electrostatic motor constituting body A for the minute hand in accordance with the signal output from the frequency dividing circuit 72. The hour hand drive circuit 75 applies the same voltage to the electrode 4B of the hour hand electrostatic motor component B in accordance with the signal output from the frequency dividing circuit 72.

  Next, an example of a method for driving the electrostatic motor constituting body of the pointer type timepiece will be described. Here, when the voltage applied to the three-phase wired electrode 4 on the stator 1 is, for example, a positive voltage, a negative voltage, or 0 V, in the following description, in the following description, the voltage (+, -, 0) is applied. The voltage application state is as shown in the lower diagram of FIG. Here, in the stator 1 shown in the lower diagram of FIG. 6A, each cell divided by a solid line corresponds to each electrode 4 (the same applies hereinafter). FIG. 6 shows only 6 poles on the stator side and 3 poles on the rotor side.

  In the charging process, as shown in the lower diagram of FIG. 6A, when voltage (+, −, 0) is applied to the electrodes 4 of the stator 1 (three electrodes from the left side, the same applies hereinafter), rotation occurs. A charge opposite to the charge of the electrode 4 is charged (induced) in a region of the resistor 11 facing the electrode 4 of the resistor layer 14 (initial charge). Here, in the resistor layer 14 of the rotor 11 shown in the upper diagram of FIG. 6A, each cell divided by a dotted line is a region corresponding to each electrode 4 (the same applies hereinafter).

  Next, in the moving process, as shown in the lower diagram of FIG. 6B, when the voltage applied to the electrode 4 of the stator 1 is switched to (−, +, −), the charge of the electrode is instantaneously changed. Since a certain amount of time is required for the charge arrangement on the rotor 11 side to change to a new equilibrium state, the charge on the rotor 11 side is held immediately after switching, as shown in the upper diagram of FIG. 6B. Charge arrangement.

  At this time, a region where the charge in the charge region of the resistor layer 14 of the rotor 11 and the charge of the electrode 4 of the stator 1 immediately below the same appears, and a Coulomb repulsive force is generated between them. As indicated by the arrows, the force acts to lift the rotor 11 and the frictional resistance between the rotor 11 and the stator 1 is reduced.

  In FIG. 6B, the balance between the coulomb attractive force and the coulomb repulsive force in the lateral direction between the stator 1 and the rotor 11 is lost, and a rotational drive force in the right direction is generated, and FIG. As shown in FIG. 3, the rotor 11 moves one pitch (one electrode of the electrode 4) rightward on the stator 1 and stops.

  Next, since the charge of the rotor 11 is partially lost during the movement, the Coulomb force (rotational driving force) is reduced. Therefore, in order to maintain this force and drive continuously, in the next charging step in the state of FIG. 6C, the electrode 4 of the stator 1 is shown in the lower diagram of FIG. A voltage (0, +, −) shifted by one pitch (one electrode) in the right direction from the lower diagram of FIG.

  Then, as shown in the upper diagram of FIG. 6D, a charge having a polarity opposite to that of the electrode 4 is recharged in the region of the resistor layer 14 of the rotor 11 facing the electrode 4. Here, since the lost charge is a part of the whole, the recharge time may be shorter than the initial charge time. Thereafter, the same steps as described above are repeated, and the rotor 11 is rotated by one pitch in the clockwise direction together with the minute hand shaft 21A and the minute hand 65 (hour hand shaft 21B and hour hand 64).

  As described above, in this pointer-type timepiece, the Coulomb attractive force generated between the plurality of electrodes 4 arranged on the same circumference of the stator 1 and the ring-shaped resistor layer 14 of the rotor 11 corresponding thereto. Since the rotor 11 is rotated by the coulomb repulsive force, it is not necessary to supply power to the rotor 11, and the structure can be simplified. Further, when the rotor 11 is rotated, the entire ring-shaped resistor layer 14 of the rotor 11 receives a driving force, the rotation of the rotor 11 is stabilized, and the frictional resistance of the minute hand shaft 21A (hour hand shaft 21B) is reduced. can do.

(Second Embodiment)
FIG. 7 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. This pointer-type timepiece differs greatly from the pointer-type timepiece shown in FIG. 1 in that the portion of the connection pad 85 provided on the lower surface of the cover substrate 41 and the stator without using the flexible wiring board 31 and the adhesive layers 51 and 52. This is a point in which a portion of one electrode 4 is bonded via a ring-shaped anisotropic conductive adhesive 86. In this case, the rotor 11 is rotatably arranged in a rotor chamber 61 that is sandwiched between the stator 1 and the cover substrate 41 and is surrounded by a ring-shaped anisotropic conductive adhesive 86. ing.

  Next, FIG. 8 shows a plan view in which a part of the stator 1 (insulating film 10) is omitted. This stator 1 is different from the stator 1 shown in FIG. 2 in that it does not have the protruding electrodes 7, 8, and 9, and the first-phase power supply wiring 5 provided outside the arrangement region of the electrodes 4 is provided. The first-phase to third-phase external connection terminals 81, 82, 83 are formed on the outer peripheral portion of the upper surface of the substrate 2 in the vicinity of the cut portion of the first-phase power supply wiring 5. This is the point.

  In this case, the first-phase external connection terminal 81 is connected to one end of the first-phase power supply wiring 5, and is connected to all of the first-phase electrodes 4 via the first-phase power supply wiring 5. It is connected. The second-phase external connection terminal 82 is connected to a predetermined one of the second-phase electrodes 4 and connected to all the remaining second-phase electrodes 4 via the second-phase power supply wiring 6. Has been. The third-phase external connection terminal 83 is connected to a predetermined one of the third-phase electrodes 4.

  Next, FIG. 9 shows a plan view in which the respective parts (each part shown in FIG. 8) provided on the upper surface of the cover substrate 41A of the minute hand electrostatic motor structure A are omitted. (The same applies to the hour hand electrostatic motor structure B except that the upper surface of the cover substrate 41B does not have the components shown in FIG. 8.) A third-phase connection wiring 84 is provided on the outer peripheral portion of the lower surface of the cover substrate 41. Is provided in a ring shape. Inside the third-phase connection wiring 84 on the lower surface of the cover substrate 41, a third-phase connection pad 85 is provided at a portion corresponding to the outer end portion of the third-phase electrode 4 of the stator 1 shown in FIG. It is connected to the third phase connection wiring 84.

  As shown in FIG. 7, the outer periphery of the lower surface of the cover substrate 41 is bonded to the outer periphery of the upper surface of the stator 1 via a ring-shaped anisotropic conductive adhesive 86. In this case, as shown in FIG. 10, the anisotropic conductive adhesive 86 is formed by mixing conductive particles 88 in an insulating adhesive 87 made of a thermosetting resin. The third-phase connection pad 85 of the cover substrate 41 is electrically connected to the outer end portion of the third-phase electrode 4 of the stator 1 through the conductive particles 88 in the anisotropic conductive adhesive 86. ing.

  Here, as shown in FIG. 8, the third-phase external connection terminal 83 is connected to a predetermined one of the third-phase electrodes 4. Then, the predetermined one third-phase electrode 4 is connected to the third-phase connection pad 85 shown in FIG. 9 directly above it via the conductive particles 88 in the anisotropic conductive adhesive 86, In addition, it is connected to the remaining third-phase connection pads 85 via the third-phase connection wiring 84. The remaining third-phase connection pads 85 are connected to the remaining third-phase electrodes 4 shown in FIG. 2 via conductive particles 88 in the anisotropic conductive adhesive 86. Accordingly, the third-phase external connection terminal 83 is electrically connected to all of the third-phase electrodes 4.

  In this pointer-type timepiece, as in the case of the first embodiment, there is no need to supply power to the rotor 11 itself in order to rotate the rotor 11, and the structure can be simplified. When the rotor 11 is rotated, the entire ring-shaped resistor layer 14 of the rotor 11 receives the driving force, the rotation of the rotor 11 is stabilized, and the frictional resistance of the minute hand shaft 21A (hour hand shaft 21B) can be reduced. it can.

(Other embodiments)
In each of the above embodiments, two electrostatic motor components are stacked, but more than that, for example, three may be stacked. Further, when an electrostatic motor formed by stacking three electrostatic motor components is applied to a pointer type timepiece, a second hand, a minute hand and an hour hand may be attached to each shaft of the three electrostatic motor components. Good.

  Further, since the base film 12 of the rotor 11 is preferably light in view of the load during driving, it can be considered to be relatively thin, for example, about 16 to 25 μm thick. However, when the thickness of the base film 12 is so thin, the base film 12 is soft and bends. As a result, the rotor 11 is bent and its outer peripheral portion comes into contact with the upper surface of the stator, and the frictional resistance therebetween increases. End up. Therefore, spherical particles for reducing frictional resistance made of glass or the like having a diameter of about 10 μm may be interposed between the rotor 11 and the stator 1.

  Alternatively, the rotor chamber 61 may be filled with a liquid such as silicon oil to reduce the frictional resistance between the rotor 11 and the stator 1 and increase the dielectric constant. Further, in the pointer type timepiece shown in FIG. 1, an anisotropic conductive adhesive as described above may be used instead of the protruding electrodes 7, 8, 9 and the adhesive layer 51.

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 which abbreviate | omitted a part of stator shown in FIG. The top view of the rotor shown in FIG. The top view of the flexible wiring board shown in FIG. The figure which shows the example of 1 structure of the electronic circuit with which the pointer type timepiece shown in FIG. 1 was equipped. The figure shown in order to demonstrate an example of the drive method of the electrostatic motor structure shown in FIG. 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. The top view which abbreviate | omitted a part of stator shown in FIG. The top view which abbreviate | omitted each part provided in the upper surface of the cover board | substrate of the electrostatic motor structure for minute hands shown in FIG. Sectional drawing of the part of the anisotropic conductive adhesive of the electrostatic motor structure shown in FIG.

Explanation of symbols

A Electrostatic motor structure for minute hand B Electrostatic motor structure for hour hand 1 Stator 2 Substrate 3 Shaft support recess 4 Electrode 5 Wiring for first phase 6 Wiring for second phase 7, 8, 9 Projection electrode DESCRIPTION OF SYMBOLS 11 Rotor 12 Base film 13 Shaft mounting hole 14 Resistor layer 21A Minute hand shaft 21B Hour hand shaft 31 Flexible wiring board 32 Ring-shaped wiring board part 33 External connection wiring board part 34 Third phase connection wiring 35, 36, 37 Connection pad 38, 39, 40 Wiring for external connection 41 Cover substrate 42 Shaft insertion hole 51, 52 Adhesive layer 61 Rotor chamber

Claims (6)

  A plurality of stators each having a plurality of electrodes on the same circumference and a plurality of rotors each having a ring-shaped resistor layer in a portion corresponding to the electrodes of the stator are alternately stacked, An electrostatic motor, wherein the rotor has the same center of rotation and is arranged to be rotatable relative to each other.   In the first aspect of the present invention, a plurality of electrostatic motor components are stacked by the stators and the corresponding rotors, and the electrostatic motor components have a cover substrate that covers the rotors. An electrostatic motor characterized by that.   3. The electrostatic motor according to claim 2, wherein a cover substrate of the lower electrostatic motor constituting body also serves as a stator of the upper electrostatic motor constituting body.   According to a third aspect of the present invention, the electrostatic motor component has a shaft attached to the central portion of the rotor, and the lower shaft of the electrostatic motor component is the static motor on the upper side. An electrostatic motor characterized in that it penetrates through the central part of the stator and the shaft of the electric motor constituting body in a rotatable manner.   A plurality of stators each having a plurality of electrodes on the same circumference and a plurality of rotors each having a ring-shaped resistor layer in a portion corresponding to the electrodes of the stator are alternately stacked, A clock module characterized in that the rotor uses an electrostatic motor having the same center of rotation and arranged to be rotatable relative to each other.   In the invention according to claim 5, the plurality of rotors move hands of a pointer type timepiece, and each shaft attached to each central portion of the plurality of rotors includes an hour hand, a minute hand, and a second hand. A clock module, wherein any one of them is attached.

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