JP6579830B2 - Static induction generator - Google Patents

Description

  The present invention relates to a power generation device, a power generator, a portable electric device, a portable timepiece and the like using electrostatic induction. As the energy source of the power generator of the present invention, it is possible to use kinetic energy widely present in the environment, such as human body motion, machine vibration, and the like. In particular, in electret power generation, it is related with the generator which multiphased the phase of the counter electrode.

  Practical power generators utilizing electrostatic induction by electret materials are disclosed in Patent Documents 1 to 5 and the like. The electrostatic induction is a phenomenon in which when a charged object is brought close to a conductor, charges having a polarity opposite to that of the charged object are attracted. A power generation device using an electrostatic induction phenomenon is a structure in which a “film for holding electric charges” (hereinafter referred to as a charged film) and a counter electrode are arranged, and is induced by relatively moving both of them using this phenomenon. It is the power generation that takes out the electric charge.

  FIG. 1 is an explanatory diagram for schematically explaining the principle of power generation using the electrostatic induction phenomenon. In FIG. 1, the counter electrode side is moved, but the charged film side may be moved.

  Taking the case of an electret material as an example, the electret is a kind of a charged film in which an electric charge is injected into a dielectric and generates an electrostatic field semipermanently. In the power generation by this electret, as shown in FIG. 1, an induced electric charge is generated in the counter electrode by the electrostatic field formed by the electret, and if the area of the overlap between the electret and the counter electrode is changed (vibration, etc.) An alternating current can be generated in the circuit. This electret power generation is advantageous in that the structure is relatively simple and a higher output can be obtained in the low frequency region than that by electromagnetic induction. In recent years, it has been attracting attention as so-called “Energy Harvesting”. .

  18A to 18C are diagrams showing an outline of the counter electrode and the charged film of Patent Document 1 as the prior art. 19A to 19C are explanatory diagrams of the counter electrode and the charged film of Patent Document 1. FIG. FIG. 20 is an explanatory diagram for explaining the Coulomb force acting on the area of the overlap portion between the charging film 3 of FIG. 19 and the first electrode A and the second electrode NA of the counter electrode 2.

  Patent Document 1 discloses a power generation device using electrostatic induction that performs reciprocal periodic rotation of a charging film and a counter electrode. In the embodiment of the prior art, unlike the schematic diagram of FIG. 1, an embodiment in which each electrode taken out as an output is formed only on the counter substrate is shown. As shown in FIG. 18A, the charging film 3 is formed on the lower surface of the rotating member 4. A plurality of first electrodes A and a plurality of second electrodes NA are alternately formed on the counter substrate 1 on the fixed side. A spiral spring 13 is installed between the rotating member 4 and the shaft 8. Reference numeral 10 denotes a rotating weight.

  The plurality of first electrodes A are electrically connected to each other, and the generated power is taken out by the wiring 90A. The plurality of second electrodes NA are also electrically connected to each other, and the generated power is extracted to the rectifier circuit 92 through the wiring 90N. Since the voltage output from the first electrode A and the second electrode NA alternately generates electrostatic induction, an alternating waveform having a half-cycle phase shift is output. A wiring 90A connected to the first electrode A on the counter substrate 1 and a wiring 90N connected to the second electrode NA are connected to a rectifier circuit 92 using a diode 91, and the rectified power is a capacitor or a secondary It is connected to a power storage member 93 using a battery or the like. The electric power charged in the power storage member 93 drives the subsequent electronic device circuit. In the embodiment in which each electrode of Patent Document 1 is formed only on the counter substrate, it is convenient because the current can be extracted from the counter substrate on the fixed side (the current does not need to be extracted from the rotating member).

  A charging film 3 as shown in FIG. 19A is formed on the lower surface of the rotating member 4. A hole is formed in the rotating member 4 between the charging film 3 and the charging film 3. On the other hand, as shown in FIG. 19B, the first electrode A and the second electrode NA are alternately formed as the counter electrode 2 on the counter substrate 1 fixed at a position facing the charging film 3, The first electrodes A and the second electrodes NA are connected to each other. Wirings 90A and 90N extracted from the first electrode A and the second electrode NA are connected to a rectifier circuit 92 using a diode 91, and further connected to a power storage member 93 using a capacitor or a secondary battery.

  As for the voltages output from the first electrode A and the second electrode NA, since electrostatic induction is alternately generated by the rotation of the rotating member 4, an alternating waveform is output. 18B and 18C show the arrangement of the charging film 3 and the counter electrodes 90A and 90N when viewed from the circumferential side surface of the rotating member 4. FIG. The counter electrodes 90A and 90N are alternately arranged, and the counter electrodes are arranged at the same interval as the interval between the counter electrodes 90A or 90N. When the rotating member 4 is rotated, FIGS. The charged film and the counter electrode face each other in any positional relationship. That is, as shown in FIG. 18B, when the first electrode A faces the charging film 3, a positive charge is attracted to the first electrode A and a current flows in one direction. At the same time, the drawn positive charges are dissipated in the second electrode NA that is not opposed to the charging film 3, and a current flows in the direction opposite to the one direction. Next, the rotating member 4 rotates to obtain FIG. 18C, and FIGS. 18C and 18B are repeated. Specifically, the first electrode A that is in a position facing the charging film 3 formed on the rotating member 4 and the second electrode NA that is in a position not facing the charging film 3 have opposite polarities. Wirings 90A and 90N are connected to different input terminals of the rectifier circuit 92. The alternating current waveform output from the power generator is converted into direct current by the rectifier circuit 92 and charged to the power storage member 93. If sufficient electricity is charged to drive the electronic device circuit 94 connected to the subsequent stage, the subsequent electronic device circuit 94 can be driven.

  FIG. 19 (c) shows the rotating member 4 in which the charging film of FIG. 19 (a) and the counter electrode of FIG. 19 (b) are opposed to the charging film 3 when viewed from the circumferential side. The arrangement of electrodes A and NA and the influence of Coulomb force are shown. The Coulomb force is an attractive force that works between charges with different signs. The more the charge is charged, the greater the attractive force. According to the arrangement of the first electrode A and the second electrode NA in FIG. 19B, there is a Coulomb force between the charging film 3 and the electrode A (or the second electrode) as shown in FIG. Due to the movement direction component F, a sawtooth holding torque as shown in FIG. In addition, although the first electrode A and the second electrode NA in FIG. 20A are originally fan-shaped, they are intentionally displayed in a rectangular shape for easy understanding.

  When the rotating member 4 stops, the rotating member 4 stops at a position where the holding torque of the rotating member 4 is maximized, that is, a position where the overlapping area of the charging film 3 and the electrode A or NA is maximized. Therefore, when the rotation of the rotating member 4 is started, the rotating member 4 cannot be rotated unless a rotational force larger than the peak value of the holding torque is applied, and even if external vibration is applied, it cannot be converted into electric power. Therefore, when the sawtooth holding torque as shown in FIG. 20B acts on the rotating member, the extremely high peak value of the holding torque increases the threshold value of the initial torque of the rotating member 4, There was a limit to further improving the energy conversion efficiency from environmental vibration as external vibration. Further, in the rotation and vibration sustainability of the rotating member 4 obtained from the environmental vibration, the peak value of the holding torque is repeatedly generated and cannot be connected to the rotation or vibration lasting for a longer time.

  Patent Document 2 also discloses a rotary power generation device using electrostatic induction that performs reciprocating periodic rotation of an electret film and a counter electrode. An electret film is formed on the inner surface of a rotating member, and the fixed side faces it. A counter electrode is formed on the counter substrate. A current is taken out using each of the electret film on the rotating side and the counter electrode on the fixed side as an electrode. In Patent Document 2, it is necessary to take out current from the electret on the rotating side, which is troublesome.

  In both of the prior arts of Patent Documents 1 and 2, the charging film and the counter electrode of the opposing substrate have the same shape, and power is generated by the relative movement of the positional relationship between the charging film and the counter electrode. In such a structure, since the Coulomb force Q is generated between the charging film and the counter electrode in electret power generation, the initial motion torque at which the rotating member starts to move requires a torque greater than the Coulomb force. Even when the torque transmitted to the rotating member is lost and the rotating member rotates with the inertial force, the rotation stops when the inertial force becomes equal to or less than the Coulomb force. For this reason, in order to improve the power generation efficiency of electret power generation, it is necessary to reduce the Coulomb force generated between the charged film and the counter electrode. In Patent Document 3, the electret film and the counter electrode are of a translational motion type, but the same problem occurs.

  In contrast to the above-described conventional techniques of Patent Documents 1 to 3, in the electrostatic induction power generation device using the electret film of Patent Documents 4 and 5, the movable substrate that reciprocates is sandwiched between an upper fixed substrate and a lower fixed substrate. It is sandwiched. Each electret film is formed on the upper and lower surfaces of the movable substrate, the counter electrode facing the electret film on the upper surface of the movable substrate is provided on the upper fixed substrate, and the counter electrode facing the electret film on the lower surface of the movable substrate is fixed to the lower portion. It is provided on the substrate. Shifting the phase of the pitch of the counter electrode and electret film in the moving direction between the upper and lower parts of the movable substrate to reduce the Coulomb force, reducing the initial torque during power generation, and improving power generation efficiency I am trying. However, the upper and lower double-sided types of Patent Documents 4 and 5 have the following problems.

  In the case of the upper and lower double-sided type, the Coulomb force can be canceled out only when the charge amounts of the upper surface charging film and the lower surface charging film are equal. The movable substrate must be positioned at an exact middle position between the upper fixed substrate and the lower fixed substrate in order to balance the Coulomb force. For this reason, it is difficult to manage the positional accuracy of the movable substrate. In addition, the amount of charge mainly depends on the thickness of the charged film, and not only does this film thickness vary during the production process, but also the amount of charged charge often varies due to charging by corona discharge. Therefore, it has been a difficult task to make the charge amounts of the upper and lower charging films equal in the upper and lower double-sided type.

  Furthermore, since the upper and lower surfaces of the movable substrate are used, thicknesses are required between the upper fixed substrate and the movable substrate, and between the movable substrate and the lower fixed substrate. It was.

JP 2013-135544 A JP2013-59149A JP 2012-138514 A Japanese Patent No. 5460872 Japanese Patent No. 5205193

  The present invention cancels the Coulomb force while maintaining the power generation capacity in an electrostatic induction generator that cancels the Coulomb force generated between the counter electrode and the charging film by shifting the relative position between the counter electrode rows. It is an object to increase the accuracy and reduce the power generation load, and to perform efficient electrostatic induction power generation with a thin structure.

  The present invention includes a housing, a first substrate fixed to the housing, a second substrate disposed in parallel to be movable relative to the first substrate, a charging film, a counter electrode, and the charging film. And an output unit for outputting alternating current generated between the counter electrodes, the counter electrode is disposed on the first counter surface of the first substrate, and the charging film is spaced at regular intervals so as to oppose the counter electrode. Installed on the second opposing surface of the second substrate, and the opposing electrode is composed of a plurality of first electrodes and second electrodes provided separately on the first opposing surface, and the first electrode and the second electrode The second electrodes are alternately arranged in a line at the predetermined intervals along the moving direction, the first electrodes and the second electrodes are connected, and the first electrode and the second electrode are Each connected to the output section, and A plurality of rows of the first electrode and the second electrode are arranged, and the phases of the constant intervals of the rows are different from each other, and the Coulomb force generated between the charged film and the counter electrode is reduced. It is an induction generator.

  Relative positions between the counter electrode rows or charged film rows in a plurality of moving directions are shifted in the same plane according to the number of counter electrode rows or charged film rows, and between the counter electrode and the charged film. By canceling the generated coulomb force, while maintaining the power generation capacity, the coulomb forces that cancel each other out can be evenly managed to reduce the power generation load, enabling efficient electrostatic induction power generation with a thin structure became.

It is explanatory drawing which illustrates typically the principle of the electric power generation using an electrostatic induction phenomenon. It is typical sectional drawing regarding the AA line (FIG. 3) of 1st Embodiment of this invention. It is an outline | summary which shows the internal structure of 1st Embodiment of this invention. It is a fragmentary perspective view for demonstrating 1st Embodiment of this invention. (A), (b) is a figure which shows the outline | summary of the counter electrode and charged film of 1st Embodiment of this invention. It is a graph which shows the output from the rectifier circuit of 1st Embodiment of this invention. (A)-(d) is explanatory drawing explaining the Coulomb force which acts on the area of the overlapping part of the charging film 3 and each of electrode A, NA, B, NB in 1st Embodiment of this invention. is there. Note that the charging film 3 and the electrodes A, NA, B, and NB are all schematically depicted as squares. This is intentionally square for ease of understanding, but in the first embodiment, it has a fan shape. (A)-(c) is explanatory drawing which shows the holding torque which acts on the upper stage row | line | column of FIG. 7, and a lower stage row | line | column, and the holding torque which acts on the whole rotation member. It is an example which shows the electrical wiring pattern of the front and back of the opposing board | substrate of 1st Embodiment of this invention. (A) displays the front side of the counter substrate, and the first electrodes A and B and the second electrodes NA and NB are formed only on one side of the counter substrate 1. (B) displays the back side of the counter substrate. (A), (b) is a figure which shows the outline | summary of the counter electrode and charged film of 2nd Embodiment of this invention. It is explanatory drawing which shows the rectifier circuit of 2nd Embodiment of this invention. It is a graph which shows the output from the rectifier circuit of 2nd Embodiment of this invention. (A), (b) explains the Coulomb force acting on the area of the overlapping portion of the charged film 3 and each of the electrodes A, NA, B, NB, C, NC in the second embodiment of the present invention. It is explanatory drawing to do. (C), (d) explains the Coulomb force acting on the area of the overlapping portion of the charged film 3 and each of the electrodes A, NA, B, NB, C, NC in the second embodiment of the present invention. It is explanatory drawing to do. (E), (f) explains the Coulomb force acting on the area of the overlapping portion of the charged film 3 and each of the electrodes A, NA, B, NB, C, NC in the second embodiment of the present invention. It is explanatory drawing to do. (A)-(d) is explanatory drawing which shows the holding torque which acts on the outer periphery row | line | column of FIG.10 (b), a middle row | line | column, and an inner circumference row | line | column, and the holding torque which acts on the whole rotation member. (A), (b) is a figure which shows the outline | summary of the counter electrode and charged film of 3rd Embodiment of this invention. (A)-(c) is a figure which shows the outline | summary of the counter electrode and charged film of patent document 1 of a prior art. (A)-(c) is explanatory drawing of the counter electrode and charged film of patent document 1. FIG. FIG. 20 is an explanatory diagram for explaining the Coulomb force acting on the area of the overlap portion between the charging film 3 of FIG. 19 and the first electrode A and the second electrode NA of the counter electrode 2.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. About each embodiment, the same code | symbol is attached | subjected to the part of the same structure, and the description is abbreviate | omitted. In the following embodiments, a wristwatch will be described as an example, but the present invention is not necessarily limited to a wristwatch. The present invention can also be applied to a portable electronic electric device with an electrostatic induction generator.

(First embodiment)
FIG. 2 is a schematic cross-sectional view taken along line AA (FIG. 3) of the first embodiment of the present invention. FIG. 3 is an outline showing the internal structure of the first embodiment of the present invention. FIG. 4 is a partial perspective view for explaining the first embodiment of the present invention. FIG. 5 is a diagram showing an outline of the counter electrode and the charged film according to the first embodiment of the present invention. FIG. 6 is a graph showing an output from the rectifier circuit according to the first embodiment of the present invention.

Hereinafter, a first embodiment will be described with reference to the drawings. 1st Embodiment is a case where it applies to portable electronic timepieces, such as a wristwatch.
As shown in FIG. 2, the portable electronic timepiece includes exterior casings 41 and 42 (back cover 42) including a windshield 24, a dial plate 25, housings 33 and 34, and a quartz movement disposed in the housing. And an electrostatic induction generator disposed in the housing. The windshield 24 is fitted into the outer casing 41 via the packing 43. The windshield 24 is made of a transparent material.

  Hereinafter, the housing will be described as a name often used in the case of a wristwatch, that is, a base plate 33 and a receiving plate 34. The base plate 33 is a kind of housing, and means a base, a support plate, an interior casing and the like into which various parts are incorporated. Further, the backing plate is a term often used when supporting the shaft of a rotating body and fixing / holding parts.

  Here, the quartz movement is defined as including a crystal oscillator 28, a circuit board 5, a step motor including a coil 26 and a rotor / stator for a motor, a gear wheel, a secondary battery 22, and the like. The The circuit board 5 incorporates an oscillation circuit, a frequency divider circuit, a step motor drive circuit, a rectifier circuit, a power supply circuit, and the like. The gear drive unit 21 includes a coil 26, a step motor, a needle-operating gear, and the like, which are part of the quartz movement. As shown in FIG. 2, the gear drive unit 21 has a pointer shaft protruding above the dial 25 and attached with a pointer 23 such as an hour hand, a minute hand, and a second hand (not shown). The hand 23 displays only the hour hand and the minute hand, but may include an hour hand, a minute hand, and a second hand. FIG. 3 shows an outline of a watch internal structure such as a quartz movement and an electrostatic induction generator, and a Z portion in FIG. 3 is a schematic region in which a part of the main plate and the quartz movement is appropriately laid out. Reference numeral 27 denotes a crown. In the Z portion, the gear drive unit 21 and the circuit board 5 of the quartz movement are arranged, and the layout may be determined appropriately in terms of design.

Next, the overall configuration of the electrostatic induction generator will be described with reference to FIG.
The rotating member 4 is fixed to the rotating shaft 8, and the charging film 3 is disposed on the lower surface of the rotating member 4. The rotating member 4 is also referred to as a second substrate. On the other hand, the counter substrate 1 having the counter electrode 2 disposed on the upper surface thereof is installed and fixed to the receiving plate 34 so as to face the charging film 3. The counter substrate 1 is also referred to as a first substrate. The rotating member 4 is pivotally supported between the base plate 33 and the receiving plate 34, and is arranged in the order of the dial plate 25, the base plate 33, the rotating member 4, the counter substrate 1, and the receiving plate 34, but is not limited thereto. Instead, the dial plate 25, the base plate 33, the counter substrate 1, the rotating member 4, and the receiving plate 34 may be arranged in this order. The same applies to other embodiments described later.

  In FIG. 2, the circuit board 5 of the quartz movement is also installed and fixed to the receiving plate 34 in the same manner as the counter substrate. Here, in order to precisely manage the gap between the counter substrate 1 and the charging film 3, the counter substrate 1 and the circuit substrate 5 are manufactured separately. If the same positional accuracy is satisfied, the counter substrate 1 and the circuit substrate 5 are opposed to each other. It is also possible to form the substrate 1 on the same substrate. When the circuit board 5 and the counter board 1 are separate boards, conduction is performed by a connection connector, a conduction spring, a connection terminal, or the like. These are the same in the embodiments described later.

  When the rotating member 4 rotates, electrostatic induction power generation is caused, and the electric power generated between the charging film 3 and the counter electrode 2 is output to the quartz movement (circuit board 5). In FIG. 4, a state in which the charging film 3 is disposed on the lower surface of the rotating member 4 and the counter electrode 2 is disposed so as to face the charging film 3 is schematically shown in a perspective view. In this embodiment, a gear transmission mechanism is used for transmission of the rotary weight 10, so that the dial 25, the base plate 33, the gear 14, the rotating member 4, the charging film 3, the counter electrode 2, The substrate 1 and the receiving plate 34 are arranged in this order.

  In the counter substrate 1, as shown in FIG. 5B, the first electrode A and the second electrode NA are alternately arranged on the outer peripheral side, and the first electrode B and the second electrode NB are alternately arranged on the inner peripheral side. Has been placed. All the first electrodes A and all the second electrodes NA are connected to each other to form a first alternating current and input to the rectifier circuit 20. Similarly, all the first electrodes B and all the second electrodes NB are connected to each other to form a second alternating current and input to the rectifier circuit 20.

  As shown in FIG. 5A, the charging film 3 on the lower surface of the rotating member is formed radially, and blank portions (through holes, through holes) are formed between the radial pieces. Yes. The rotary shaft 8 is pivotally supported by a bearing 50 provided on the base plate 33 on the upper side and a bearing 50 provided on the receiving plate 34 on the lower side (the bearing 50 may be a seismic device, for example, a parashock or the like). In addition, even if it does not form a blank part in the rotation member 4, it can implement.

  In order to simplify the description of the arrangement of the charged film or the counter electrode, it will be expressed in terms of phase hereinafter. The implications are as follows. The charging film of the rotating member and the blank portion (through hole, through hole) are alternately arranged in the circumferential direction with the same area, and the charging film and the counter substrate in which the electrode of the same area is arranged in the circumferential direction are coaxial. When arranged close to each other, the generated electric power is the maximum because the most charge is induced to the counter electrode at the position where the area where the charging film and the counter electrode overlap is maximized when viewed from above. Thereafter, when the charged film is moved away from the counter electrode, the induced charge is reduced, and the generated power becomes the smallest when the charged film and the counter electrode do not overlap at all. Since this state is repeated alternately by the rotation of the rotating member, the waveform of the generated power becomes periodic, and the phase of the waveform rotates 360 degrees from the position where the charging film and the counter electrode overlap to the next overlapping position. At this time, the charged film has moved twice the width of the charged film in the circumferential direction. Therefore, when explaining the amount of movement of the arrangement of the counter electrode or the charged film, the difference in relative position (displacement angle in the case of rotation) of the two charged film widths is read as a phase and called one cycle. To.

  The electrode rows of the first electrode A and the second electrode NA and the electrode rows of the first electrode B and the second electrode NB are arranged so that the phases are different by a quarter cycle of the AC one cycle. The electrode array of the first electrode A and the second electrode NA and the electrode array of the first electrode B and the second electrode NB are collectively referred to as the counter electrode 2. The electrode rows of the first electrode B and the second electrode NB may be arranged so that their phases are different from the electrode rows of the first electrode A and the second electrode NA by 3/4 cycle of one AC cycle. good. In the embodiment of FIGS. 5A and 5B, four sets of the first and second electrodes are installed, but the present invention is not limited to this, and it is sufficient that an even number of electrodes are installed. The same applies to the following embodiments.

  The rotary weight 10 rotates by capturing the movement of the arm and the like. As shown in FIGS. 2 and 4, the gear 14 is fixed to the rotating shaft 8 on the upper side of the rotating member 4 of the rotating shaft 8. Further, as a gear transmission mechanism (gear train) from the rotary weight 10 fixed to the shaft 9 to the rotary shaft 8, a gear 15 fixed to the shaft 9 and a gear 14 fixed to the rotary shaft 8 are provided. Yes. Here, the gear train refers to the gears 15 and 14. In this case, when the rotation of the rotary weight 10 is increased and the rotating shaft 8 is rotated, the charging film (electret film) 3 installed on the rotating member is opposed to the counter substrate 1 (fixing of the receiving plate 34). The electrode 2 can be rotated at an increased speed. Therefore, when the rotational speed of the rotating member 4 increases, the amount of power generation can be increased. The gear train is not limited to two gears, but may be a combination of three or more gears, or a special gear, a cam, a link, a one-way clutch or the like interposed in the middle of the gear train. It is included in the gear transmission mechanism. Here, the shaft 9 is pivotally supported by the receiving plate 34 via the bearing 16. The shaft 9 can be supported by the base plate 33 and the receiving plate 34.

  As a gear transmission mechanism from the rotary weight 10 fixed to the shaft 9 to the rotary shaft 8, it is possible to divert a conventionally known automatic winding rotational drive technique in a mechanical wristwatch. For example, rotations in both forward and reverse directions of the rotary weight 10 fixed to the shaft 9 due to vibrations such as arm movements may be always converted into one-way rotation by the conversion clutch mechanism included in the gear transmission mechanism. good.

  Such a conversion clutch mechanism is well known as a known technique of a mechanical self-winding wristwatch as a two-way clutch mechanism, and thus these known techniques can be applied. Further, only the forward and reverse direction of the rotation and swing of the shaft 9 by the rotating weight 10 may be transmitted to the rotating shaft 8 by a one-way clutch. In this case, even when the rotation of the shaft 9 of the rotating weight 10 (the rotating shaft 8 of the rotating member 4) rotates in the reverse direction, no force that impedes the movement is applied to the rotating member 4, so that kinetic energy is wasted. The power generation efficiency can be improved. The gear transmission mechanism of the rotating member 4 and the rotating weight 10 described above can be appropriately applied to the embodiments described below. In the present embodiment, the rotary weight 10 can also be provided directly on the rotary shaft 8. Further, a weight may be provided on the rotating member 4 to replace the rotating weight. In these cases, the gear transmission mechanisms 15 and 14 are unnecessary.

Next, details of the present embodiment will be described below.
As the electret material used as a charging film in the present invention, a material that is easily charged is used. For example, silicon oxide (SiO ₂ ) or a fluororesin material is used as a negatively charged material. Specifically, as a negatively charged material, there is CYTOP (registered trademark), which is a fluororesin material manufactured by Asahi Glass.

In addition, other electret materials include polymer materials such as polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), polytetrafluoroethylene (PTFE), and polyvinyldendifluoride (PVDF). ), Polyvinyl fluoride (PVF), and the like, and the aforementioned silicon oxide (SiO ₂ ) and silicon nitride (SiN) can be used as the inorganic material. In addition, a well-known charged film can be used.

  With reference to FIGS. 5-7, the electric power generation by the charging film 3 and the counter electrode 2 is demonstrated. The power generation mechanism of this embodiment is the same as the type shown in FIG. As shown in FIG. 5A, the charging film 3 on the lower surface of the rotating member 4 is formed radially, and blank portions (through holes, through holes) are formed between each of the radial pieces 3. Has been. There is no input to the rectifier from the rotating charging film 3. In the present embodiment, there are two rows, the outer peripheral electrode row of the first electrode A and the second electrode NA on the outer peripheral side, and the inner peripheral electrode row of the first electrode B and the second electrode NB on the inner peripheral side. Dividing the counter electrode into a plurality of rows of the first electrode and the second electrode is referred to herein as multiphase.

In the outer peripheral electrode array of the first electrode A and the second electrode NA on the outer peripheral side, a current is generated as follows. A wiring connecting a plurality of first electrodes A is called an A wiring, and a wiring connecting a plurality of second electrodes NA is called an NA wiring. The first electrode A and the second electrode NA are alternately arranged in a line at a constant interval (here, a constant angle interval) along the movement direction (here, the rotation direction).
The charging film 3 indicated by a broken line overlaps the first electrode A in FIG. A period in which the charging film 3 overlaps the first electrode A is referred to as an A period. Since the negative charge is held in the charging film 3 (electret film), the positive charge is attracted to the first electrode A by electrostatic induction. Current flows when positive charge is drawn.
On the other hand, along with the rotation of the rotating member 4 (assuming clockwise), the charging film 3 indicated by a broken line overlaps with the adjacent second electrode NA. A period in which the charging film 3 overlaps the second electrode NA is referred to as an NA period. Positive charges are attracted to the second electrode NA by electrostatic induction. Current flows when positive charge is drawn. On the other hand, since the blank part (hole) overlaps with the first electrode A, the positive charge drawn in the period A is dissipated and a current flows in the reverse direction. As the rotating member 4 rotates, the A period and the NA period are alternately repeated. That is, during the period A, a current flows from the second electrode NA to the first electrode A, and during the NA period, a current flows from the first electrode A to the second electrode NA.

  In the inner peripheral electrode array of the first electrode B and the second electrode NB on the inner peripheral side, a current is generated as follows. A wiring connecting a plurality of first electrodes B is called a B wiring, and a wiring connecting a plurality of second electrodes NB is called an NB wiring. Similar to the first electrode A and the second electrode NA, the first electrode B and the second electrode NB on the inner peripheral side are alternately arranged in a line at a predetermined angular interval along the rotation direction. The first electrode B and the second electrode NB on the inner peripheral side are arranged with a phase difference by a quarter cycle from the first electrode A and the second electrode NA on the outer peripheral side. The first electrode B and the second electrode NB on the inner peripheral side, like the first electrode A and the second electrode NA on the outer peripheral side, flow an alternating current with a phase difference delay by a quarter cycle. . The alternating current generated in the outer peripheral electrode array of the first electrode A and the second electrode NA on the outer peripheral side is input to the rectifier circuit 20 via the wirings A and NA, and the inner side of the first electrode B and the second electrode NB on the inner peripheral side The alternating current generated in the circumferential electrode array is also input to the rectifier circuit 20 via the wirings B and NB, rectified, and taken out as a direct current shown in FIG. Here, the horizontal axis of FIG. 6 is the phase angle of the alternating current generated in the electrode, and the vertical axis is the amplitude of the generated alternating current. As described above, the AC phase is replaced with the displacement angle. The two-phase AC waveform output from the above-described power generator is converted to DC by the rectifier circuit 20 and charged to the secondary battery 22 via the step-down circuit 30. If the counter electrode 2 is disposed on the rotating member 4, wiring to be input from the counter electrode 2 to the rectifying circuit 20 cannot be provided. Therefore, the counter electrode 2 and the rotating shaft 8 are connected to each other and the generated current is extracted from the rotating shaft 8. The resistance of the power transmission path is increased and the power generation efficiency is lowered. However, according to the configuration of the present embodiment, it is only necessary to extract current from the counter electrode 2 of the fixed counter substrate, so that the circuit configuration can be extremely simplified.

  When the rotary member 4 fixed to the rotary shaft 8 is rotated by the rotary weight 10, the charged film (electret film) 3, the first electrode A, the second electrode NA, the first electrode B, and the second electrode of the counter electrode 2. The overlapping area with the NB increases and decreases, and the positive charges attracted to these increase and decrease, and the alternating current shown in FIG. 6 is generated between the charging film (electret film) 3 and the counter electrode 2. This is output to the quartz movement through the rectifier circuit 20 and the step-down circuit as an output unit. The rectifier circuit 20 is a bridge type and includes four diodes with respect to a one-phase AC waveform. Since this embodiment has a two-phase AC waveform, the rectifier circuit 20 includes eight diodes.

  FIGS. 7A to 7D illustrate the Coulomb force acting on the area of the overlapping portion of the charged film 3 and each of the electrodes A, NA, B, and NB in the first embodiment of the present invention. FIG. Note that the charging film 3 and the electrodes A, NA, B, and NB are all schematically depicted as squares. This is intentionally square for ease of understanding, but in the first embodiment, it has a fan shape. FIG. 8 is an explanatory diagram showing the holding torque acting on the upper row and the lower row of FIG. 7 and the holding torque acting on the entire rotating member. FIG. 9 is an example showing electrical wiring patterns on the front and back of the counter substrate according to the first embodiment of the present invention. FIG. 9A shows the front side of the counter substrate 1, and the first electrodes A and B and the second electrodes NA and NB are formed only on one side of the counter substrate 1. FIG. 9B shows the back side of the counter substrate 1.

  In the present embodiment, as shown in FIG. 5B, the first electrode B and the second electrode NB on the inner peripheral side are the quarter cycle of the first electrode A and the second electrode NA on the outer peripheral side. Are arranged only with a phase difference. A specific example in which the first electrodes A and B and the second electrodes NA and NB of the counter electrode 2 are arranged on the counter substrate 1 is shown in FIG. This embodiment will be briefly described. When the counter electrode is multiphased, each electrode must be arranged separately and an area loss for separation occurs. In the following examples, embodiments are devised so as to minimize this area loss.

  As shown in FIG. 9A, reference numeral 101A denotes an extraction terminal after all the first electrodes A are connected. Reference numeral 102NA denotes an extraction terminal after all the second electrodes NA are connected. Reference numeral 103NB denotes an extraction terminal after all the second electrodes NB are connected. Reference numeral 104B denotes an extraction terminal after all the first electrodes B are connected.

  In the embodiment shown in FIGS. 9A and 9B, the arrangement for connecting and connecting the electrodes is as follows. The first electrodes A are arranged on the outer peripheral side of the counter substrate 1 and are provided alternately with the second electrodes NA. The first electrodes A are connected and connected by the outermost peripheral edge portion 110 of the electric wiring pattern. On the other hand, the first electrodes B are arranged on the inner peripheral side of the counter substrate 1 and are provided alternately with the second electrodes NB. The second electrodes NB are connected and connected by the innermost peripheral edge 113 of the electric wiring pattern. On the other hand, on the front side of the counter substrate, it is possible to provide two concentric connection patterns that connect and connect the second electrodes NA and the first electrodes B, respectively. Only the area of each electrode is reduced. In order to make each electrode the same area and maximize it, as shown in FIG. 9B, the second electrode NA and the first electrode B on the front side of the counter substrate 1 are formed on the back side through through holes. Are connected to the annular connection patterns 111 and 112.

The first electrode A is connected to the extraction terminal 101A from the outermost peripheral edge portion 110 of the pattern. The second electrode NA is connected to the connection pattern 111 via the through hole 108 provided in each, and is connected to the extraction terminal 102NA from the through hole 102. The first electrode B is connected to the connection pattern 112 through the through hole 105 provided in each, and from the through hole 106 provided in one of the first electrodes B through the through hole 104, It is connected to the extraction terminal 104B. The second electrodes NB are connected and connected to each other at the innermost peripheral edge 113 of the pattern, and are connected to the extraction terminal 103NB from the through hole 109 provided in one of the second electrodes NB through the through hole 103. Yes.
As described above, if the first electrode A, the second electrode NA, the first electrode B, and the second electrode NB are arranged in a pattern, each electrode can have the same area, and the area of each electrode can be maximized.

  Hereinafter, the Coulomb force acting on the area of the overlapping portion of the charging film 3 and each of the electrodes A, NA, B, and NB in such an arrangement will be described. The areas of the first electrode A and the second electrode NA on the outer peripheral side and the areas of the first electrode B and the second electrode NB on the inner peripheral side are all preferably the same area.

  When the charged film moves in translation, a rectangular electrode may be used as it is in FIG. 7 (a) to 7 (d) are schematic drawings in which FIG. 5 (b) is viewed in plan from above and is linearly stretched in a line along the movement direction (rotation direction). The upper row is the inner circumferential electrode row of the first electrode B and the second electrode NB on the inner circumferential side, and the lower row is the outer circumferential electrode row of the first electrode A and the second electrode NA on the outer circumferential side.

  FIG. 7A shows the case where the first electrode A on the outer peripheral side and the charging film 3 are exactly overlapped. That is, the area of the overlap portion between the first electrode A and the charging film 3 is maximized. Therefore, when the charging film 3 tries to move in the positive moving direction (rotation) shown in the figure, a holding torque is applied to the rotating member 4 so as to prevent the movement. At this time, the holding torque does not act on the rotating member 4 in the first electrode B and the second electrode NB on the inner peripheral side.

  Next, the positive movement of the charging film 3 is performed, and FIG. 7B shows the time when the first electrode B on the inner peripheral side and the charging film 3 are exactly overlapped. That is, the area of the overlap portion between the first electrode B and the charging film 3 is maximized. Therefore, when the charging film 3 tries to move in the positive moving direction (rotation) shown in the figure, a holding torque is applied to the rotating member 4 so as to prevent the movement. On the other hand, the holding torque does not act on the rotating member 4 in the first electrode A and the second electrode NA on the outer peripheral side. Thereafter, the position of the charging film 3 with respect to the counter electrode transitions to FIGS. 7C and 7D, and FIGS. 7A to 7D are repeated.

  The first electrode A and the charging film 3 on the outer peripheral side, and the second electrode NA and the charging film 3 on the outer side are each halved in the overlapping area, and the power generation amount is also halved, respectively. Then, since the same amount of electric power as when the area where the electrode on the outer peripheral side overlaps with the charging film 3 is the maximum is obtained, the total power generation amount does not decrease.

  8A, 8B, and 8C show the holding torque of the outer peripheral electrode row in the lower row in FIG. 7, the holding torque of the inner peripheral electrode row in the upper row in FIG. Holding torque is shown graphically. In FIG. 8, the vertical axis indicates the strength of the holding force that holds the rotating member in its position due to the Coulomb force that the electrode and the charging film attract, and the horizontal axis indicates FIGS. 7 (a) to 7 (d). The charged film position with respect to the counter electrode shown is shown. The broken line waveform is the holding torque data in the conventional structure of FIG. 20A, and the solid line is the holding torque data according to this embodiment.

  For the reasons described above, half of the holding torque of the outer peripheral electrode array or inner peripheral electrode array cancels out, so that only half of the holding torque is required compared to the conventional structure. Furthermore, since the holding torque waveform is shifted by a half cycle between the outer electrode array and the inner electrode array, when these holding torques are combined, the peak of the holding torque is eliminated and smoothed.

  According to the present embodiment, since the entire holding torque can be maintained at a constant value with no peak value, it is possible to suppress the speed fluctuation at the time of low rotation of the rotating member and to suppress the fluctuation of the generated current. . In addition, compared with the prior art of FIG. 20, the area of the portion where each electrode and the charging film completely overlap is halved (the Coulomb force is halved), and the holding torque can be reduced to half. Therefore, the initial torque of the rotating member 4 can also be reduced by half compared to the prior art. By arranging the first electrode and the second electrode of the counter electrode as shown in FIG. 5B, the coulomb force can be reduced while maintaining the generated power. Moreover, electret power generation that is not affected by the Coulomb force can be performed.

In the present embodiment, as described above, the arrangement of the outer peripheral electrode array and the inner peripheral electrode array on the fixed substrate is shifted by half the electrode width (with a quarter cycle phase difference), The holding torque can be halved and smoothed, and has the following advantages.
(1) Coulomb forces that cancel each other can be made the same.
In order to cancel the Coulomb force in the conventional upper and lower double-sided type, the position must be strictly adjusted so that the phase is shifted between the upper and lower charged film rows. There are two methods for configuring the charged film array on the upper and lower surfaces of the substrate. After forming the charged film array on the upper surface of one substrate, turn the substrate over and form the charged film array on the other surface. It can be manufactured by forming a charged film array on one surface of two substrates and bonding the back surfaces together. In any of the above manufacturing methods, it is difficult to precisely displace the arrangement of the charging film array on the lower surface side with respect to the arrangement of the charging film array on the upper surface side. This leads to an increase in cost. Further, in the upper and lower double-sided type, the upper and lower counter electrodes must be shifted from each other by a predetermined amount, and adjustment of the arrangement position is difficult in such a three-dimensional power generation structure. On the other hand, according to this embodiment, the phase relationship is determined by the planar arrangement distance on the substrate, and no adjustment is required. As a result, productivity is improved and the coulomb force cancellation accuracy is greatly improved.

Next, there is no problem of variation in the charge amount of the upper and lower charged films.
In the conventional upper and lower double-sided type, when the charge amounts of the upper surface charging film and the lower surface charging film are equal, the Coulomb force can be canceled out. However, in the case of the upper and lower double-sided type, the charging film forming operation and the charging operation are performed twice regardless of the method of forming the charging film on the upper and lower surfaces of one substrate or the method of bonding two substrates together. Is required. In the charged film formation process, film thickness unevenness easily occurs due to the viscosity of the film material, and the amount of charge to be charged increases or decreases depending on the film thickness of the charged film. In addition, in the charging process, charges are injected by corona discharge, and thus uneven charging easily occurs. The charge amount of the charged film varies for each operation described above. Therefore, it has been a very difficult task to make the charge amounts of the upper and lower charged films equal in both the upper and lower type. On the other hand, according to the present embodiment, even if there is a variation in the charged film thickness and the charged charge amount for each individual product, it can be made the same when viewed on a single substrate. Is possible. In this way, the problems of the conventional double-sided type can be solved.

(2) Only one side of the wiring is required.
That is, in the upper and lower double-sided type of the prior art, the power generation current is input to the same rectifier circuit part from the power generation electrodes arranged at the upper and lower parts of the hiding and stored, and the rectifier circuit part is either the upper part or the lower part. Therefore, one or both of the wirings from the upper and lower power generation electrodes must be lengthened. Therefore, the wiring resistance is increased and the stored power is reduced. In the present embodiment, the wiring concentrates on the substrate on one side, so that the rectifier circuit portion is placed in the vicinity thereof, and power can be transmitted with short wiring.

(3) Superior in cost.
Since the upper and lower surfaces of the conventional technique require a charging film and a counter electrode on the upper and lower surfaces of the substrate, the work of forming the charging film and the counter electrode is required twice. According to this embodiment, only one time is required. Moreover, when forming a charging film on both surfaces of a rotating member, the jig | tool for fixing a rotating member on the front and back and its operation | work are required. In the present embodiment, such costs can be reduced.
(4) It can be configured to be thin.
The upper and lower surfaces of the prior art are not suitable for wristwatches because the thickness of the generator is increased because it is necessary to provide charging films on the upper and lower surfaces of the moving substrate and electrodes on the top and bottom of the housing. . According to this embodiment, since only the electrode on the upper surface of the substrate and the charged film of the rotating member are required, the power generator can be configured thin.

(Second Embodiment)
FIG. 10 is a diagram showing an outline of the counter electrode and the charged film according to the second embodiment of the present invention. FIG. 11 is an explanatory diagram showing a rectifier circuit according to a second embodiment of the present invention. FIG. 12 is a graph showing the output from the rectifier circuit according to the second embodiment of the present invention.

  The second embodiment is an embodiment in which the first and second electrodes are arranged so that the electrostatic induction power generation current caused between the charging film 3 and the counter electrode 2 becomes a three-phase alternating current. The second embodiment also has the same structure of FIG. 2 as the first embodiment. The difference from the first embodiment is that the arrangement of the first and second electrodes provided on the counter substrate 1 is concentrically (annular) from the outer periphery to the inner periphery, the outer electrode array, the intermediate electrode array, This is a point in which three inner electrode rows are arranged. The second embodiment is an embodiment to which the rotating member 4 is applied, but the same effect can be obtained as a moving member that performs translational movement instead of the rotating member 4 of the second embodiment. The same applies to other embodiments.

  As shown in FIG. 10B, in the outer peripheral electrode row, the first electrode A and the second electrode NA are alternately arranged in a row at a constant angular interval along the rotation direction. In the intermediate electrode row, the first electrode B and the second electrode NB are alternately arranged in a row at a constant angular interval along the rotation direction. In the inner peripheral electrode row, the first electrode C and the second electrode NC are alternately arranged in a row at regular angular intervals along the rotation direction. In the embodiment shown in FIGS. 10A and 10B, four first and second electrodes in each row are provided in the circumferential direction, and four charging films 3 are provided. However, the present invention is not limited to this. It is not necessary to have an even number installed.

  One cycle in the embodiment of FIGS. 10A and 10B is 90 °. Unlike the first embodiment, if the rotating member 4 rotates counterclockwise, the inner electrode array advances 30 ° ahead of the outer electrode array of the first electrode A and the second electrode NA. The first electrode C and the second electrode NC are alternately repeated at the first position, and the intermediate electrode row is formed by alternating the first electrode B and the second electrode NB at a position advanced 30 ° ahead of the inner circumferential electrode row. It is repeated. The phase difference of each column is not limited to the above example, and may be set as appropriate so that a three-phase alternating current can be generated by each column. All the first electrodes and the second electrodes have the same area, but are not limited thereto. In short, the arrangement of the electrodes and the area of the electrodes may be such that the holding torque of the rotating member 4 by the Coulomb force is reduced as compared with the prior art.

  As shown in FIG. 10A, the charging film 3 on the lower surface of the rotating member 4 is formed radially, and blank portions (through holes, through holes) are formed between each of the radial pieces 3. Has been. Even if the blank portion faces the counter electrode, no electric charge is generated in the counter electrode, so that no generated current is generated. The rotation of the charging film 3 of the rotating member 4 may be clockwise, but for the description of FIGS. 13 to 15 below, the rotation is counterclockwise. Also in this embodiment, the mechanism in which alternating current is generated in the first and second electrodes in each row is the same as in the first embodiment. In this embodiment, a three-phase alternating current as shown in FIG. 12 is generated. As a result, a DC voltage having an output waveform as shown by a solid line in FIG. 12 is generated by the Y-connected rectifier circuit 20. In the case of three-phase alternating current, NA, NB, and NC can be made conductive to provide a virtual ground point indicated by N in FIG. 11, so that no output line is required for grounding, and the number of wirings can be reduced. . Therefore, compared with 1st Embodiment, the diode used in the rectifier 20 can be reduced and a circuit structure can be simplified. For the generated three-phase alternating current, a delta connection may be used instead of the Y connection.

  FIGS. 13A, 13B, 14C, 15D, 15E, and 15F show the charging film 3, the electrodes A, NA, and f in the second embodiment of the present invention. It is explanatory drawing explaining the Coulomb force which acts on the area of the overlap part with each of B, NB, C, and NC. FIGS. 16A, 16B, 16C, and 16D illustrate the holding torque that works on the outer circumferential row, the middle row, and the inner circumferential row of FIG. 10B, and the holding torque that works on the entire rotating member. FIG. In FIG. 16, the vertical axis indicates the strength of the holding force that holds the rotating member in its position due to the Coulomb force that attracts the electrode and the charged film, and the horizontal axis indicates the counter electrode shown in FIGS. The position of the charged film is shown. The broken line waveform is the holding torque data in the conventional structure of FIG. 20A, and the solid line is the holding torque data according to the present embodiment, and the upper, middle, and lower stages in FIGS. Corresponds to the inner circumferential row, intermediate row, and outer circumferential row. 13 to 15, the plus side movement of the charging film 3 represents the counterclockwise rotation of the charging film 3 of the rotating member 4 in FIGS. 10 (a) and 10 (b).

  FIG. 13A shows the case where the lower first electrode A and the charging film 3 are exactly overlapped. That is, the area of the overlap portion between the first electrode A and the charging film 3 is maximized. Therefore, when the charging film 3 tries to move in the plus movement direction (counterclockwise rotation), a holding torque is applied to the rotation member 4 so as to prevent the movement. At this time, the total holding torque of the middle first electrode B and the second electrode NB and the total holding torque of the upper second electrode NC and the first electrode C are slightly acting. Since the electrodes of the counter substrate are divided into three rows, one-third of the original holding torque is required. The initial torque of the rotating member 4 can also be reduced compared to the prior art.

  Next, the positive movement of the charging film 3 is performed, and FIG. 13B shows the case where the second electrode NB in the middle stage and the charging film 3 are exactly overlapped. That is, the area of the overlap portion between the second electrode NB and the charging film 3 is maximized. Therefore, when the charging film 3 tries to move in the positive moving direction (rotation) shown in the figure, a holding torque is applied to the rotating member 4 so as to prevent the movement. At this time, the total holding torque of the lower first electrode A and the second electrode NA and the total holding torque of the upper second electrode NC and the first electrode C are slightly acting. Even in this case, the electrodes of the counter substrate are divided into three rows, so that only one third of the original holding torque is required. 14 (c), (d), FIG. 15 (e), and (f), the same phenomenon occurs, and as shown in FIGS. 16 (a) to 16 (d), the holding torque acting on each stage is changed. When superposed, the holding torque acting on the entire rotating member can be found to be about half of the original holding torque.

  According to the present embodiment, the entire holding torque can be maintained at a constant value with no peak value. Moreover, this constant value can reduce the holding torque by about half compared to the prior art of FIG. By arranging the first electrode and the second electrode of the counter electrode as shown in FIG. 10B, the coulomb force can be reduced while maintaining the generated power. Moreover, electret power generation that is not affected by the Coulomb force can be performed. Other functions and effects are the same as those of the first embodiment.

(Third embodiment)
FIG. 17 is a diagram showing an outline of the counter electrode and the charged film according to the third embodiment of the present invention.

  In the third embodiment, as shown in FIG. 17A, the charging film 3 on the lower surface of the rotating member 4 sets the phase difference by a quarter cycle between the outer peripheral side and the inner peripheral side. As shown in FIG. 17B, the outer peripheral electrode rows of the first electrode A and the second electrode NA on the outer peripheral side and the outer electrode rows of the first electrode B and the second electrode NB on the inner peripheral side are positioned as shown in FIG. This is an embodiment when no phase difference is set. Other configurations are the same as those of the first embodiment. As shown in FIG. 17A, it corresponds to the outer electrode array of the first electrode A and the second electrode NA on the outer peripheral side of the counter substrate 1, and the outer electrode array of the first electrode B and the second electrode NB on the inner peripheral side. Thus, the outer charged film 3 ′ and the inner charged film 3 ″ are out of phase by a quarter. The outer peripheral charging film 3 ′ and the inner peripheral charging film 3 ″ have the same area. These may be linked.

  A blank portion is formed between the charged film 3 ′ on the outer peripheral side and the charged film 3 on the inner charged film 3 ″ and the adjacent charged film 3. As in the other embodiments, there is no input to the rectifier from the rotating and charging film 3.

  In the inner peripheral electrode array of the first electrode B and the second electrode NB on the inner peripheral side, a wiring connecting a plurality of first electrodes B is called a B wiring, and a wiring connecting a plurality of second electrodes NB is called an NB wiring. . Similar to the first electrode A and the second electrode NA, the first electrode B and the second electrode NB on the inner peripheral side are alternately arranged in a line at a predetermined angular interval along the rotation direction. The first electrode B and the second electrode NB on the inner peripheral side are arranged with a phase difference of zero between the first electrode A and the second electrode NA on the outer peripheral side. However, since the charging film 3 ′ on the outer peripheral side and the charging film 3 ″ on the inner peripheral side have a phase difference of ¼, the first electrode B on the inner peripheral side and the second electrode 2 on the inner peripheral side with the rotation of the rotating member 4. As with the first electrode A and the second electrode NA on the outer peripheral side, an alternating current flows through the electrode NB with a phase difference delay by a quarter cycle. Similarly, if the phase shift of the charged film is installed in the outer circumferential row, the middle row, and the inner circumferential row, and the phase difference of the three rows on the counter electrode side is made zero, a three-phase alternating current can be output.

  The alternating current generated in the outer peripheral electrode array of the first electrode A and the second electrode NA on the outer peripheral side is input to the rectifier circuit 20 via the wirings A and NA, and the inner side of the first electrode B and the second electrode NB on the inner peripheral side The alternating current generated in the circumferential electrode array is also input to the rectifier circuit 20 via the wirings B and NB, rectified, and taken out in the same manner as the direct current shown in FIG. The two-phase AC waveform output from the above-described power generator is converted to DC by the rectifier circuit 20 and charged to the secondary battery 22 via the step-down circuit 30. Also in the present embodiment, it is not necessary to take out current from the rotating shaft 8, and it is only necessary to take out current from the fixed counter substrate, so that the circuit configuration can be made extremely simple.

  The effect of 3rd Embodiment is the same as that of 1st Embodiment. Although it is necessary to punch out a complicated blank portion on the rotating member 4, it is not always necessary to form a blank portion, and the outer peripheral charging film 3 ′ and the inner peripheral charging film 3 ″ are shifted to a flat substrate. May be installed every 90 °.

  In addition to the embodiments described above, the features of the present invention can be applied to other embodiments. In the first to third embodiments, the charging film is formed on the rotating member 4. However, the charging film may be installed at predetermined intervals on a moving member that reciprocally translates instead of the rotating member 4. Patent Document 3 is cited and supplemented). If the rectangular first and second electrodes as shown in FIG. 7 (a) and FIG. 13 (a) are similarly installed on the fixed counter substrate 1 facing the same, the same effect as those of these embodiments. Is obtained.

  In the first to third embodiments, as shown in FIG. 2, the gear 14 is fixed to the rotating shaft 8 on the upper side of the rotating member 4 of the rotating shaft 8. Further, as a gear transmission mechanism (gear train) from the rotary weight 10 fixed to the shaft 9 to the rotary shaft 8, a gear 15 fixed to the shaft 9 and a gear 14 fixed to the rotary shaft 8 are provided. Yes. There may be two or more gear trains. On the other hand, the rotary weight 10 can also be provided directly on the rotary shaft 8. Further, a weight may be provided on the rotating member 4 to replace the rotating weight. In these cases, the gear transmission mechanisms 15 and 14 are unnecessary.

  Further, as in Patent Documents 1 and 2, a weight is provided on the rotating member 4 and a balance spring (clock terminology, spiral spring) is provided between the shaft 8 and the housing 33 (refer to Patent Documents 1 and 2 for this point). 1), one end of the balance spring is fixed to the housing with a mustache (clock term, support rod), and the other end of the balance spring is press-fitted or crimped to the rotating shaft 8 with a bead (clock term, ring). The features of the counter electrode and the charged film of the first to third embodiments may be applied to the embodiment that is fixed. In this embodiment, a bearing is provided between the gear 14 and the rotary shaft 8, and one end of the balance spring is fixed to the gear 14 with a mustache, and the other end of the balance spring is press-fitted or applied to the rotary shaft 8 with a mustache ball. It may be fixed by tightening. Furthermore, it is possible to implement the features of the counter electrode and the charging film installed on the lower side of the rotating member 4 in the first to third embodiments not only on the lower side but also on the upper side of the rotating member 4 at the same time. It is.

  It should be noted that the technical scope of the present invention is not limited to the above-described embodiments, and includes those in which various modifications are made to the above-described embodiments without departing from the spirit of the present invention. That is, the specific configuration described in the embodiment is merely an example, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Counter substrate 2 Counter electrode 3, 3 ', 3''Charged film 4 Rotating member 8 Axis 10 Rotating weight 14, 15 Gear 20 Rectifier circuit 21 Gear drive part 22 Secondary battery 24 Windshield 25 Dial 30 Step-down circuit 33, 34 Housing A, B, C First electrode NA, NB, NC Second electrode 200 Quartz movement

Claims (10)

A housing;
A first substrate fixed to the housing;
A second substrate disposed in parallel to be movable relative to the first substrate;
A charged membrane;
A counter electrode;
An output unit for outputting an alternating current generated between the charging film and the counter electrode;
Have
Placing the counter electrode on a first counter surface of a first substrate;
Installing the charging film on the second opposing surface of the second substrate at regular intervals so as to face the counter electrode;
The counter electrode is
It is composed of a plurality of first electrodes and second electrodes provided separately on the first facing surface,
The first electrode and the second electrode are:
Alternately arranged along the moving direction of the second substrate in a row at the fixed interval,
While the first electrodes and the second electrodes are connected,
The first electrode and the second electrode are each connected to the output unit,
In the first facing surface,
A plurality of rows of the first electrode and the second electrode in the row;
Wherein the plurality electrostatic induction power generator wherein predetermined intervals of phase that is different respectively for each column. An axis is provided on the second substrate,
An upper bearing portion and a lower bearing portion provided with the shaft in the housing,
The electrostatic induction generator according to claim 1, wherein the electrostatic induction generator is rotatably supported. A housing;
A first substrate fixed to the housing;
A second substrate disposed in parallel to be movable relative to the first substrate;
A charged membrane;
A counter electrode;
An output unit for outputting an alternating current generated between the charging film and the counter electrode;
Have
Placing the counter electrode on a first counter surface of a first substrate;
Installing the charging film on the second opposing surface of the second substrate at regular intervals so as to face the counter electrode;
The counter electrode is
It is composed of a plurality of first electrodes and second electrodes provided separately on the first facing surface,
The first electrode and the second electrode are:
Alternately arranged along the moving direction of the second substrate in a row at the fixed interval,
While the first electrodes and the second electrodes are connected,
The first electrode and the second electrode are each connected to the output unit,
In the first facing surface,
A plurality of rows of the first electrode and the second electrode in the row;
The phases of the constant intervals of the plurality of rows are all the same,
In the second facing surface,
For each of the plurality of rows of the first electrode and the second electrode,
The charging film is opposed to a row of charging films installed at regular intervals,
An electrostatic induction generator in which the phase of the fixed interval of one row of each charging film is different. An axis is provided on the second substrate,
An upper bearing portion and a lower bearing portion provided with the shaft in the housing,
The electrostatic induction generator according to claim 3, wherein the electrostatic induction generator is rotatably supported. The shaft or the second substrate is
Is a rotating weight with a biased weight balance installed directly?
The electrostatic induction generator according to claim 2 or 4, wherein rotation of the rotary weight is rotationally transmitted to the shaft via a gear train. The electrostatic induction generator according to claim 1, wherein all areas of the first electrode and the second electrode in the plurality of rows are equal. In the first facing surface,
The first electrode and the second electrode in the one row are installed in two or three rows,
The electrostatic induction generator according to any one of claims 1 to 6, wherein two- or three-phase alternating current is output to an output unit. The first substrate used in the electrostatic induction generator according to claim 2 or 4,
On the first facing surface of the first substrate,
Either one of the first electrode and the second electrode in the row arranged on the outermost periphery,
Connected by the pattern of the outermost periphery of the first substrate,
Either one of the first electrode and the second electrode in the row arranged on the innermost periphery,
Connected by a pattern of the innermost peripheral edge of the first substrate,
Other electrodes are
A substrate characterized in that it is connected and connected on the back side of the first facing surface of the first substrate through a through hole. 9. The substrate according to claim 8, wherein all areas of the first electrode and the second electrode in the plurality of rows are equal. For the first substrate,
The electrostatic induction generator according to claim 1 or 3, wherein the second substrate performs translational motion.