JP2011078198A - Electrostatic induction generation apparatus - Google Patents

Electrostatic induction generation apparatus Download PDF

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JP2011078198A
JP2011078198A JP2009226548A JP2009226548A JP2011078198A JP 2011078198 A JP2011078198 A JP 2011078198A JP 2009226548 A JP2009226548 A JP 2009226548A JP 2009226548 A JP2009226548 A JP 2009226548A JP 2011078198 A JP2011078198 A JP 2011078198A
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movable member
electret
electrostatic induction
tubular member
induction power
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Ryuta Iijima
竜太 飯島
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Brother Industries Ltd
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Brother Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic induction generation apparatus which has high power generation efficiency. <P>SOLUTION: The electrostatic induction generation apparatus includes a cylindrical tubular member which has movement regulation parts at both ends thereof and is formed of an insulating material; a cylindrical movable member which is arranged reciprocally inside the tubular member, at least a part of which is formed of a solid metal, and in which a penetration hole extending in the same direction as that of movable member reciprocation is formed; a rod-shaped center metal member which is arranged in parallel with the axial line of the tubular member and penetrates the penetration hole of the movable member; and a cylindrical electrode which is arranged on the internal face or the external face of the tubular member. An electret is formed at a portion of the external periphery of the movable member or a portion of the cylindrical electrode, and the tubular member has a length which allows the surface area of the cylindrical electrode contacting with the electret or a surface area of the movable member to be variable due to the movement of the movable member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、エレクトレットを利用した静電誘導型発電装置に関する。   The present invention relates to an electrostatic induction power generating device using an electret.

従来、運動エネルギーを電気エネルギーに変換する発電装置として、構造が比較的簡単でありながらエネルギー変換効率が高い、エレクトレットを用いた静電誘導型の発電装置が提案されている。   Conventionally, as a power generation device that converts kinetic energy into electric energy, an electrostatic induction power generation device using an electret that has a relatively simple structure and high energy conversion efficiency has been proposed.

特許文献１で示されているエレクトレット膜を備えた静電誘導型変換素子は、可動電極と、固定電極と、固定電極に形成されたフッ素系樹脂材料等からなる電荷保持材料であるエレクトレット膜とによって構成されている。この静電誘導型変換素子は、可動電極を振動させることで、エレクトレット膜に帯電された電荷により可動電極に誘導される電荷量を変化させて、可動電極の運動エネルギーを電圧変化として得ることができる。つまり運動エネルギーを電気エネルギーに変換することで発電するように構成されている。しかしながら、この静電誘導型変換素子は可動電極部を振動させるため、可動電極部に接続されている電気配線の信頼性が低くなってしまうことが問題であった。   An electrostatic induction conversion element provided with an electret film shown in Patent Document 1 includes a movable electrode, a fixed electrode, and an electret film that is a charge holding material made of a fluorine-based resin material or the like formed on the fixed electrode. It is constituted by. This electrostatic induction conversion element can obtain the kinetic energy of the movable electrode as a voltage change by vibrating the movable electrode to change the amount of charge induced to the movable electrode by the charge charged on the electret film. it can. That is, it is configured to generate electricity by converting kinetic energy into electrical energy. However, since this electrostatic induction conversion element vibrates the movable electrode portion, there is a problem that the reliability of the electrical wiring connected to the movable electrode portion is lowered.

そこで、特許文献２及び特許文献３では、エレクトレットを設けた電極と、対向する電極との間に設けた固体誘電体や流体を可動物として、電極間領域と電極間外領域との間を行き来させることで、電極間の電気容量を変化させ、その電気容量変化分を出力するように構成している。特許文献３で提案されている流体とは、液体、液体金属、蒸気、誘電体ビード、金属ビード、もしくはそれらの混合物である。   Therefore, in Patent Document 2 and Patent Document 3, a solid dielectric or fluid provided between an electrode provided with an electret and an opposing electrode is used as a movable object to move between the inter-electrode region and the inter-electrode outer region. By doing so, the capacitance between the electrodes is changed, and the change in the capacitance is output. The fluid proposed in Patent Document 3 is a liquid, a liquid metal, a vapor, a dielectric bead, a metal bead, or a mixture thereof.

特開２００６−１８０４５０号公報JP 2006-180450 A 特表２００５−５２９５７４号公報JP 2005-529574 A 特表２００８−５０７２５０号公報Special table 2008-507250 gazette

しかしながら、特許文献２及び特許文献３で示される固体誘電体や流体の移動に起因する容量変化による発電装置では、以下のような問題があり、信頼性が低く、また得られる可動物の運動エネルギーが低いため、電極間の電気容量の変化が生じにくく、電気エネルギーの発電の効率がよくなかった。
１．液体（金属）、蒸気からなる流体では、液体あるいは蒸気であるが故に封止技術が重要となり、振動発電する時の動作信頼性が低い。また、外部振動からの力の伝達効率が低く得られる移動速度が低いため、得られる運動エネルギーも低い。また、特許文献３では、液体金属を用いる場合に水銀が好適とされているが、水銀は人体への悪影響が懸念されるため、実際に使用することは困難である。
２．誘電体ビード、もしくは金属ビードからなる流体では、ビード群の移動の際に、互いの接触によって破損が生じるために形状が変化してしまい、長期使用において一定した出力が得られない。また、ビード群流体は移動の際に地球重力の影響を強く受けるため、例えば、移動方向を重力に対して垂直とした場合、エレクトレットと電極との間にビード群が高密度に満たされる状態と満たされていない状態とを繰り返し生じさせることは困難であり、その結果、電気容量の大きな変化は得られない。
３．固体誘電体では、振動による衝撃により割れ、欠け等が起こりやすく、長期使用では安定した出力が得られない。また、一般的に質量が小さいため、得られる運動エネルギーは低い。 However, the power generation apparatus based on the capacitance change caused by the movement of the solid dielectric or fluid shown in Patent Document 2 and Patent Document 3 has the following problems, is not reliable, and the kinetic energy of the movable object to be obtained Therefore, the change in the electric capacity between the electrodes is difficult to occur, and the power generation efficiency of electric energy is not good.
1. In a fluid consisting of liquid (metal) and vapor, the sealing technique is important because it is liquid or vapor, and the operation reliability when generating vibration is low. Moreover, since the moving speed with which the transmission efficiency of the force from the external vibration is low is low, the obtained kinetic energy is also low. Further, in Patent Document 3, mercury is preferred when using a liquid metal, but mercury is difficult to actually use because there is a concern about adverse effects on the human body.
2. In a fluid composed of a dielectric bead or a metal bead, when the bead group moves, the shape of the fluid changes due to damage caused by mutual contact, and a constant output cannot be obtained in long-term use. In addition, since the bead group fluid is strongly influenced by the earth's gravity when moving, for example, when the moving direction is perpendicular to the gravity, the bead group is filled with high density between the electret and the electrode. It is difficult to repeatedly generate an unsatisfied state, and as a result, a large change in electric capacity cannot be obtained.
3. Solid dielectrics are easily cracked, chipped, etc. due to shocks caused by vibration, and stable output cannot be obtained after long-term use. Moreover, since the mass is generally small, the obtained kinetic energy is low.

本発明は、上述した課題を解決した、信頼性が高く、発電の効率が良い静電誘導型発電装置を提供することを目的とする。   An object of the present invention is to provide an electrostatic induction power generation device that solves the above-described problems and has high reliability and high power generation efficiency.

上記目的を達成するために、本発明の請求項１に係る発明の静電誘導型発電装置は、絶縁物質にて形成される筒状の管状部材と、前記管状部材の両端に設けられている移動規制部と、前記管状部材内部に往復移動可能に設けられた筒状の可動部材であって、少なくとも一部が固形状金属からなり、往復移動する方向と同一方向に延びる貫通孔が設けられている可動部材と、前記管状部材の軸線と平行に設けられ、前記可動部材の貫通孔に挿通された棒状の中心金属部材と、前記管状部材に設けられている筒状電極とを備え、前記可動部材の外周の一部、または前記筒状電極の一部のいずれかにエレクトレット部が形成されており、前記可動部材の移動によって前記エレクトレット部と面している前記筒状電極または前記可動部材の表面積が変化することが可能な長さを、前記管状部材が有することを特徴とする。   In order to achieve the above object, an electrostatic induction power generating device according to claim 1 of the present invention is provided with a tubular tubular member formed of an insulating material and at both ends of the tubular member. A movement restricting portion and a cylindrical movable member provided inside the tubular member so as to be reciprocally movable, and at least a part thereof is made of a solid metal and provided with a through hole extending in the same direction as the reciprocating direction. A movable member, a rod-shaped central metal member that is provided in parallel with the axis of the tubular member, and is inserted through a through-hole of the movable member, and a cylindrical electrode provided in the tubular member, The cylindrical electrode or the movable member, wherein an electret part is formed on either a part of the outer periphery of the movable member or a part of the cylindrical electrode, and faces the electret part by the movement of the movable member The surface area of That the possible length of, wherein said tubular member has.

また、本発明の請求項２に係る発明の静電誘導型発電装置は、請求項１に記載の発明の構成に加え、前記可動部材と前記中心金属部材とが、前記貫通孔において接触するように配設されていることを特徴とする。   Further, in the electrostatic induction power generating device according to the second aspect of the present invention, in addition to the configuration of the first aspect, the movable member and the central metal member are in contact with each other in the through hole. It is characterized by being arranged.

また、本発明の請求項３に係る発明の静電誘導型発電装置は、請求項１乃至２に記載の発明の構成に加え、前記可動部材は、固形状金属と絶縁体とが移動方向に交互に積層されることによって構成され、そのうち少なくとも２層が前記固形状金属であり、前記筒状電極の一部に形成されている前記エレクトレット部は、エレクトレットが形成されている箇所と形成されていない箇所が交互に形成され、そのうち少なくとも２箇所はエレクトレットが形成されていることを特徴とする。   According to a third aspect of the present invention, in addition to the configuration of the first and second aspects, the movable member includes a solid metal and an insulator in the moving direction. It is configured by being laminated alternately, at least two of which are the solid metal, and the electret part formed in a part of the cylindrical electrode is formed as a place where the electret is formed. None of the portions are alternately formed, and at least two of them are formed with electrets.

また、本発明の請求項４に係る発明の静電誘導型発電装置は、請求項１乃至２に記載の発明の構成に加え、前記筒状電極は、固形状金属と絶縁体とが前記可動部材の運動方向に交互に形成されることによって構成され、そのうち少なくとも２箇所が前記固形状金属であり、前記可動部材の外周の一部に形成されている前記エレクトレット部は、エレクトレットが形成されている箇所と形成されていない箇所が交互に形成され、そのうち少なくとも２箇所はエレクトレットが形成されていることを特徴とする。   According to a fourth aspect of the present invention, in addition to the configuration of the first and second aspects of the invention, the cylindrical electrode includes a solid metal and an insulator that are movable. It is constituted by being alternately formed in the movement direction of the member, and at least two of them are the solid metal, and the electret part formed on a part of the outer periphery of the movable member is formed with an electret. Locations that are present and locations that are not formed are alternately formed, and at least two of them are formed with electrets.

また、本発明の請求項５に係る発明の静電誘導型発電装置は、請求項１乃至４に記載の発明の構成に加え、前記移動規制部の内面側には、弾力性のある緩衝体が設けられていることを特徴とする。   According to a fifth aspect of the present invention, in addition to the configuration according to the first to fourth aspects of the present invention, an elastic shock absorber is provided on the inner surface side of the movement restricting portion. Is provided.

また、本発明の請求項６に係る発明の静電誘導型発電装置は、請求項１乃至５に記載の発明の構成に加え、前記管状部材と前記可動部材とは、同じ断面形状であることを特徴とする。   Further, in the electrostatic induction power generating device according to claim 6 of the present invention, in addition to the configuration of the invention according to claims 1 to 5, the tubular member and the movable member have the same cross-sectional shape. It is characterized by.

また、本発明の請求項７に係る発明の静電誘導型発電装置は、請求項１乃至６の記載の発明の構成に加え、前記可動部材には、前記中心配線金属が挿通された貫通孔以外にも、往復移動する方向に延びる貫通孔が設けられていることを特徴とする。   According to a seventh aspect of the present invention, in addition to the configuration of the first to sixth aspects, the electrostatic induction power generating device according to the seventh aspect of the present invention has a through-hole through which the central wiring metal is inserted in the movable member. Besides, a through hole extending in a reciprocating direction is provided.

請求項１に係る発明の静電誘導型発電装置は、絶縁物質にて形成される筒状の管状部材と、前記管状部材の両端に設けられている移動規制部と、前記管状部材内部に往復移動可能に設けられた筒状の可動部材であって、少なくとも一部が固形状金属からなり、往復移動する方向と同一方向に延びる貫通孔が設けられている可動部材と、前記管状部材の軸線と平行に設けられ、前記可動部材の貫通孔に挿通された棒状の中心金属部材と、前記管状部材に設けられている筒状電極とを備え、前記可動部材の外周の一部、または前記筒状電極の一部のいずれかにエレクトレット部が形成されており、前記可動部材の移動によって前記エレクトレット部と面している前記筒状電極または前記可動部材の表面積が変化することが可能な長さを、前記管状部材が有する。本発明は可動部材が固形状金属であり、前記可動部材に設けられた貫通孔に棒状の中心金属部材が挿通されているため、高い運動エネルギーが得られ、耐久性に富んだ静電誘導型発電装置を安価に得ることができる。   An electrostatic induction power generating device according to a first aspect of the present invention includes a cylindrical tubular member formed of an insulating material, a movement restricting portion provided at both ends of the tubular member, and reciprocating inside the tubular member. A movable movable member having a cylindrical shape, the movable member having at least a part made of solid metal and provided with a through hole extending in the same direction as the reciprocating direction, and the axis of the tubular member And a cylindrical center metal member inserted through the through hole of the movable member and a cylindrical electrode provided on the tubular member, and a part of the outer periphery of the movable member, or the cylinder The electret part is formed in any part of the electrode, and the surface area of the cylindrical electrode facing the electret part or the movable member can be changed by the movement of the movable member The tubular Wood has. In the present invention, the movable member is a solid metal, and the rod-shaped central metal member is inserted into the through-hole provided in the movable member, so that a high kinetic energy is obtained and the electrostatic induction type is rich in durability. A power generator can be obtained at low cost.

請求項２に係る発明の静電誘導型発電装置は、請求項１に記載の発明の効果に加え、前記可動部材と前記中心金属部材とが、前記貫通孔において接触するように配設されていることにより、筒状電極と中心金属部材との間の電気容量の変化をより大きくすることが可能となり、より効率よく電気エネルギーの発電を行うことが可能となる。   In addition to the effect of the invention according to claim 1, the electrostatic induction power generating device according to claim 2 is arranged such that the movable member and the central metal member are in contact with each other in the through hole. As a result, the change in the electric capacity between the cylindrical electrode and the central metal member can be further increased, and electric energy can be generated more efficiently.

請求項３に係る発明の静電誘導型発電装置は、請求項１乃至２に記載の発明の効果に加え、前記可動部材は、固形状金属と絶縁体とが移動方向に交互に積層されることによって構成され、そのうち少なくとも２層が前記固形状金属であり、前記筒状電極の一部に形成されている前記エレクトレット部は、エレクトレットが形成されている箇所と形成されていない箇所が交互に形成され、そのうち少なくとも２箇所はエレクトレットが形成されていることにより、可動部材の小さな動きで複数箇所にて同時に電気容量変化が発生するため、発電効率を向上させることができる。   According to a third aspect of the present invention, in addition to the effects of the first and second aspects of the invention, the movable member has the solid metal and the insulator alternately stacked in the moving direction. And at least two layers are the solid metal, and the electret part formed in a part of the cylindrical electrode is alternately formed with a place where the electret is formed and a place where the electret is not formed. Since the electret is formed in at least two places among them, a change in electric capacity is simultaneously generated at a plurality of places by a small movement of the movable member, so that power generation efficiency can be improved.

請求項４に係る発明の静電誘導型発電装置は、請求項１乃至２に記載の発明の効果に加え、前記筒状電極は、固形状金属と絶縁体とが前記可動部材の運動方向に交互に形成されることによって構成され、そのうち少なくとも２箇所が前記固形状金属であり、前記可動部材の外周の一部に形成されている前記エレクトレット部は、エレクトレットが形成されている箇所と形成されていない箇所が交互に形成され、そのうち少なくとも２箇所はエレクトレットが形成されていることにより、可動部材の小さな動きで複数箇所にて同時に電気容量変化が発生するため、発電効率を向上させることができる。   According to a fourth aspect of the present invention, in addition to the effects of the first and second aspects, the cylindrical electrode includes a solid metal and an insulator in the movement direction of the movable member. It is configured by being alternately formed, at least two of which are the solid metal, and the electret part formed on a part of the outer periphery of the movable member is formed as a place where the electret is formed. The portions that are not formed are alternately formed, and at least two of them are formed with electrets, so that a change in electric capacity occurs simultaneously at a plurality of locations with a small movement of the movable member, so that power generation efficiency can be improved. .

請求項５に係る発明の静電誘導型発電装置は、請求項１乃至４に記載の発明の効果に加え、前記移動規制部の内面側に、弾力性のある緩衝体が設けられていることにより、可動部材である固形状金属の破損を防止することができる。   In addition to the effects of the inventions according to claims 1 to 4, the electrostatic induction power generating device according to the invention according to claim 5 is provided with an elastic buffer on the inner surface side of the movement restricting portion. Thus, it is possible to prevent the solid metal that is the movable member from being damaged.

請求項６に係る発明の静電誘導型発電装置は、請求項１乃至５に記載の発明の効果に加え、前記管状部材と前記可動部材とが、同じ断面形状であることにより、管状部材上に形成されている筒状電極と可動部材との間の距離をより短くすることが可能となり、より発電効率を上げることができる。   According to a sixth aspect of the present invention, in addition to the effects of the first to fifth aspects, the tubular member and the movable member have the same cross-sectional shape. The distance between the cylindrical electrode formed on the movable member and the movable member can be further shortened, and the power generation efficiency can be further increased.

請求項７に係る発明の静電誘導型発電装置は、請求項１乃至６に記載の発明の効果に加え、前記可動部材には、前記中心配線金属が挿通された貫通孔以外にも、往復移動する方向に延びる貫通孔が設けられていることにより、中心金属部材が挿通されていない貫通孔が通気口となり、移動による空気の抵抗を減少できるため、高い運動エネルギーが得られる。上述してきたように高い運動エネルギーが得られることで、より効率よく電気エネルギーが得られる静電誘導型発電装置を得ることができる。   According to a seventh aspect of the present invention, in addition to the effects of the first to sixth aspects, the movable member is reciprocated in addition to the through-hole through which the central wiring metal is inserted. By providing the through-hole extending in the moving direction, the through-hole through which the central metal member is not inserted becomes a vent and air resistance due to movement can be reduced, so that high kinetic energy can be obtained. As described above, by obtaining high kinetic energy, it is possible to obtain an electrostatic induction power generating apparatus that can obtain electric energy more efficiently.

第１実施形態の静電誘導型発電装置の縦断正面図である。It is a vertical front view of the electrostatic induction power generating device of the first embodiment. 図１に示す第１実施形態の静電誘導型発電装置のＡ−Ａ’線における矢視方向断面図である。It is arrow direction sectional drawing in the A-A 'line | wire of the electrostatic induction power generating device of 1st Embodiment shown in FIG. 第２実施形態の静電誘導型発電装置の縦断正面図である。It is a vertical front view of the electrostatic induction power generating device of the second embodiment. 図３に示す第２実施形態の静電誘導型発電装置のＢ−Ｂ’線における矢視方向断面図である。It is arrow direction sectional drawing in the B-B 'line | wire of the electrostatic induction type electric power generating apparatus of 2nd Embodiment shown in FIG. 第３実施形態の静電誘導型発電装置の縦断正面図である。It is a vertical front view of the electrostatic induction power generating device of 3rd Embodiment. 図５に示す第３実施形態の静電誘導型発電装置のＣ−Ｃ’線における矢視方向断面図である。FIG. 6 is a cross-sectional view in the direction of the arrow in the C-C ′ line of the electrostatic induction power generating device of the third embodiment shown in FIG. 5. 第４実施形態の静電誘導型発電装置の縦断正面図である。It is a vertical front view of the electrostatic induction power generating device of 4th Embodiment. 図７に示す第４実施形態の静電誘導型発電装置のＤ−Ｄ’線における矢視方向断面図である。It is arrow direction sectional drawing in the D-D 'line | wire of the electrostatic induction power generating device of 4th Embodiment shown in FIG.

＜第１実施形態＞
以下、本発明の静電誘導型発電装置について、図面を参照して説明する。図１は、第１実施形態の静電誘導型発電装置１の縦断正面図である。図２は、図１に示す第１実施形態の静電誘導型発電装置のＡ−Ａ’線における矢視方向断面図である。 <First Embodiment>
Hereinafter, an electrostatic induction power generating device of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal front view of an electrostatic induction power generating device 1 according to a first embodiment. 2 is a cross-sectional view taken along the line AA ′ of the electrostatic induction power generating device of the first embodiment shown in FIG.

静電誘導型発電装置１は、図１乃至図２に示す通り、管状部材２と、管状部材２の外面に設けられて、その一部にエレクトレット部７が形成されている筒状電極３と、管状部材２内部の空間２ａ内に、管状部材２の軸線と平行に延びるよう配設されている棒状電極５と、棒状電極５が挿通される貫通孔を有し、棒状電極５上を長手方向に往復移動することのできる可動部材９とから構成されている。なお、棒状電極５が、本発明の中心金属部材に相当する。   As shown in FIGS. 1 and 2, the electrostatic induction power generation device 1 includes a tubular member 2, a cylindrical electrode 3 provided on the outer surface of the tubular member 2, and an electret portion 7 formed on a part thereof. In the space 2 a inside the tubular member 2, the rod-shaped electrode 5 disposed so as to extend in parallel with the axis of the tubular member 2, and a through-hole through which the rod-shaped electrode 5 is inserted, the top of the rod-shaped electrode 5 is elongated. It is comprised from the movable member 9 which can reciprocate in a direction. The rod-like electrode 5 corresponds to the central metal member of the present invention.

管状部材２は、アクリル樹脂からなる円筒形状であり、その内部には空間２ａが管状部材２の長手方向端部が開放されて設けられている。管状部材２の長さは、その内部の空間２ａにおいて可動部材９が移動した際に、その表面にエレクトレット部７が設けられている筒状電極３と面している可動部材９の表面積が変化することが可能な長さである。管状部材２の長手方向の開放端部２ｂ、２ｃには、移動規制部１２ｂ、１２ｃが管状部材２に接着されて設けられている。移動規制部１２ｂ、１２ｃは、空間２ａから可動部材９が出ないように、開放端部２ｂ、２ｃを塞ぐように設けられている。図１、図２の例では、移動規制部１２ｂ、１２ｃとして平板状の部材が設けられており、空間２ａは完全に密閉されている。移動規制部１２ｂ、１２ｃはアクリル樹脂にて構成されている。   The tubular member 2 has a cylindrical shape made of an acrylic resin, and a space 2a is provided inside the tubular member 2 with an end portion in the longitudinal direction of the tubular member 2 being opened. The length of the tubular member 2 is such that when the movable member 9 moves in the internal space 2a, the surface area of the movable member 9 facing the cylindrical electrode 3 on which the electret portion 7 is provided changes. Is the length that can be done. Movement restricting portions 12 b and 12 c are attached to the tubular member 2 at open ends 2 b and 2 c in the longitudinal direction of the tubular member 2. The movement restricting portions 12b and 12c are provided so as to block the open end portions 2b and 2c so that the movable member 9 does not come out of the space 2a. In the example of FIGS. 1 and 2, flat members are provided as the movement restricting portions 12b and 12c, and the space 2a is completely sealed. The movement restricting portions 12b and 12c are made of acrylic resin.

なお、本実施形態では、管状部材２は円筒形状にて例示したが、この形状には限定されず、例えば、楕円筒形状、四角筒等その他の多角筒形状であってもよい。また、開放端部２ｂ、２ｃは移動規制部１２ｂ、１２ｃにて完全密閉するとしたが、可動部材９が空間２ａから出ないように移動を規制できれば必ずしも完全に密閉する必要はなく、例えば格子状のものであってもよい。   In addition, in this embodiment, although the tubular member 2 was illustrated by the cylindrical shape, it is not limited to this shape, For example, other polygonal cylinder shapes, such as an elliptic cylinder shape and a square cylinder, may be sufficient. Further, the open end portions 2b and 2c are completely sealed by the movement restricting portions 12b and 12c. However, if the movement can be restricted so that the movable member 9 does not come out of the space 2a, it is not always necessary to completely seal, for example, a lattice shape. It may be.

棒状電極５は、低抵抗ステンレスによって形成された円柱形状をしており、その両端は、移動規制部１２ｂ、１２ｃの中心点に固定されている。棒状電極５は、移動規制部１２ｃに形成されている図示しない孔を通して管状部材２の外部に延出している配線２０と接続されている。棒状電極５の材質は、低抵抗ステンレス板以外では、Ａｌ、Ｔｉ、Ｃｒ等の金属でも、樹脂等の絶縁性基材に上述した金属の薄膜を形成したものでもよい。なお、棒状電極５の形状は円柱形状には限定されず、楕円柱形状、多角柱形状であってもよい。   The rod-like electrode 5 has a cylindrical shape made of low resistance stainless steel, and both ends thereof are fixed to the center points of the movement restricting portions 12b and 12c. The rod-like electrode 5 is connected to a wiring 20 extending outside the tubular member 2 through a hole (not shown) formed in the movement restricting portion 12c. The material of the rod-shaped electrode 5 may be a metal such as Al, Ti, or Cr other than the low resistance stainless steel plate, or may be a material in which the above-described metal thin film is formed on an insulating substrate such as a resin. The shape of the rod-shaped electrode 5 is not limited to a cylindrical shape, and may be an elliptical column shape or a polygonal column shape.

移動規制部１２ｂ、１２ｃの内面には、略円柱形状でその中心部に孔が設けられている緩衝体１７ｂ、１７ｃが、移動規制部１２ｂ、１２ｃに接着され、孔に棒状電極５が挿通されて設けられている。緩衝体１７ｂ、１７ｃは、弾力性のある物質により形成されており、その材質の例としては、イソプレンゴム、ニトリルゴム、ブタジエンゴム等が挙げられる。   Buffer bodies 17b and 17c having a substantially cylindrical shape and a hole at the center thereof are bonded to the movement restricting portions 12b and 12c on the inner surfaces of the movement restricting portions 12b and 12c, and the rod-like electrode 5 is inserted into the holes. Is provided. The buffer bodies 17b and 17c are made of an elastic material, and examples of the material include isoprene rubber, nitrile rubber, and butadiene rubber.

筒状電極３は、管状部材２の中央付近の外周に一様に形成され、筒状形状をなすように設けられている。本実施例では、筒状電極３はＡｌフィルムにて形成されている。筒状電極３の材質は、Ａｌフィルム以外では、樹脂等の絶縁性基材にＴｉ、Ｃｒ、Ｎｉ等の金属の薄膜を形成したものでもよい。   The cylindrical electrode 3 is uniformly formed on the outer periphery near the center of the tubular member 2 and is provided so as to form a cylindrical shape. In this embodiment, the cylindrical electrode 3 is formed of an Al film. The material of the cylindrical electrode 3 may be a material in which a thin metal film such as Ti, Cr, Ni or the like is formed on an insulating base material such as a resin other than an Al film.

エレクトレット部７は、筒状電極３の内面側に一様に形成されている。本実施例では、エレクトレット部７はフッ素系樹脂の膜として形成されている。このエレクトレット部７は、筒状電極３を形成している低抵抗ステンレスに対し、ディップ法にてフッ素系樹脂膜を塗布した後、熱処理して膜形成し、この膜に対しコロナ放電により電子が注入されている。エレクトレット部７は、約−１００〜−２０００Ｖの電位に調整されている。   The electret part 7 is uniformly formed on the inner surface side of the cylindrical electrode 3. In this embodiment, the electret part 7 is formed as a film of a fluororesin. This electret portion 7 is formed by applying a fluorine resin film to the low resistance stainless steel forming the cylindrical electrode 3 by dipping and then heat-treating the film, and electrons are applied to the film by corona discharge. Being injected. The electret part 7 is adjusted to a potential of about −100 to −2000V.

なお、筒状電極３及びエレクトレット部７は、管状部材２の外面に、絶縁性テープ１３にて固定されている。この絶縁性テープ１３には図示しない孔が設けられており、その孔を通して、筒状電極３に配線２０が接続されている。   The cylindrical electrode 3 and the electret part 7 are fixed to the outer surface of the tubular member 2 with an insulating tape 13. The insulating tape 13 is provided with a hole (not shown), and the wiring 20 is connected to the cylindrical electrode 3 through the hole.

可動部材９は、低抵抗ステンレスからなる固形状金属によって形成された円柱である。可動部材は、管状部材２内の空間２ａに対して、断面方向の大きさをほぼ同じに形成されており、空間２ａの長手方向にのみ自在に移動する。   The movable member 9 is a cylinder formed of a solid metal made of low resistance stainless steel. The movable member is formed in substantially the same size in the cross-sectional direction with respect to the space 2a in the tubular member 2, and moves freely only in the longitudinal direction of the space 2a.

なお、可動部材９の形状は円柱にて例示したが、この形状には限定されない。ただし、この場合も管状部材２内部の空間２ａと同じ断面形状を有することが望ましい。   In addition, although the shape of the movable member 9 was illustrated by the cylinder, it is not limited to this shape. However, also in this case, it is desirable to have the same cross-sectional shape as the space 2 a inside the tubular member 2.

また、可動部材９の左右両側面の中心を結ぶ線上には、移動方向に延びる貫通孔１５が設けられている。貫通孔１５は円形の断面形状をなし、その大きさは、棒状電極５とほぼ同じである。貫通孔１５には棒状電極５が可動部材９に接触するように挿通されている。   A through hole 15 extending in the moving direction is provided on a line connecting the centers of the left and right side surfaces of the movable member 9. The through hole 15 has a circular cross-sectional shape, and the size thereof is substantially the same as that of the rod-shaped electrode 5. The rod-shaped electrode 5 is inserted into the through hole 15 so as to contact the movable member 9.

なお、貫通孔の断面形状も円形には限定されないが、棒状電極５と同じ断面形状であることが望ましい。   The cross-sectional shape of the through hole is not limited to a circular shape, but is preferably the same cross-sectional shape as the rod-shaped electrode 5.

次に、本実施形態の静電誘導型発電装置１の動作を説明する。まず、本実施形態の静電誘導型発電装置１を管状部材２の長手方向に振動させる。振動させたことにより静電誘導型発電装置１に加えられた力は、可動部材９の運動エネルギーとして伝達される。可動部材９は、加えられた力と管状部材２との摩擦力、気体からの抵抗力などから得られる総合的な力によって与えられる速度で、空間２ａ内を長手方向に往復移動し、筒状電極３の内側の空間に出入りする。筒状電極３と棒状電極５との間の空間には、エレクトレット部７の帯電による電場が形成されている。可動部材９がこの電場に進入し、エレクトレット部７に面する可動部材９の面積が増大した際には、電極間の電気容量が増加する。更に可動部材９が移動して、上述した電場から抜出し、エレクトレット部７に面する可動部材９の面積が減少すると、電極間の電気容量が減少する。静電誘導型発電装置１を振動させることにより、可動部材９が筒状電極３の内側の空間への出入りを繰り返し、そのことで、筒状電極３と棒状電極５の間に形成されている電場の電気容量は上昇と降下を繰り返し、交番電流を得ることができる。よって、筒状電極３及び棒状電極５を外部負荷（配線２０）に結線することで、電気エネルギーを取り出すことができる。   Next, the operation of the electrostatic induction power generating device 1 of this embodiment will be described. First, the electrostatic induction power generating device 1 of the present embodiment is vibrated in the longitudinal direction of the tubular member 2. The force applied to the electrostatic induction power generation device 1 due to the vibration is transmitted as kinetic energy of the movable member 9. The movable member 9 reciprocates in the longitudinal direction in the space 2a at a speed given by a total force obtained from the applied force and the frictional force between the tubular member 2 and the resistance force from the gas. Enter and leave the space inside the electrode 3. In the space between the cylindrical electrode 3 and the rod-shaped electrode 5, an electric field is formed by charging of the electret part 7. When the movable member 9 enters the electric field and the area of the movable member 9 facing the electret portion 7 increases, the electric capacity between the electrodes increases. Further, when the movable member 9 moves and is extracted from the above-described electric field and the area of the movable member 9 facing the electret portion 7 decreases, the electric capacity between the electrodes decreases. By oscillating the electrostatic induction power generation device 1, the movable member 9 repeatedly enters and exits the space inside the cylindrical electrode 3, thereby forming between the cylindrical electrode 3 and the rod-shaped electrode 5. The electric capacity of the electric field repeatedly increases and decreases, and an alternating current can be obtained. Therefore, electrical energy can be taken out by connecting the cylindrical electrode 3 and the rod-shaped electrode 5 to the external load (wiring 20).

本実施例の静電誘導型発電装置１は、上述した通り、筒状電極３と棒状電極５に設けられたエレクトレット部７との間の空間に可動部材９を移動させることによって生じる電場の容量変化を発電の出力に利用しているため、可動部材９に配線を結線する必要がないので、配線部が移動することがなく、よって高い信頼性が得られる。   As described above, the electrostatic induction power generating device 1 according to the present embodiment has a capacity of an electric field generated by moving the movable member 9 to the space between the cylindrical electrode 3 and the electret portion 7 provided on the rod-like electrode 5. Since the change is used for the output of power generation, it is not necessary to connect the wiring to the movable member 9, so that the wiring portion does not move, and thus high reliability is obtained.

また、本実施例の静電誘導型発電装置１は、可動部材９が固形状金属で形成されている。流体と比較して外部の力の伝達効率が良いため、移動速度が高くなり、得られる電気エネルギーの変換元になる運動エネルギーが高い。さらに発電のための容量変化に固形状金属からなる可動部材の移動を利用するため、流体や固形状誘電体可動部材と比較して、大きな電気容量の変化が得られる。また、固形状の金属は一般に良好な延性・展性を示すため、固形状の誘電体と比較して、振動衝撃による割れ・欠けに対する耐性が高く、耐久性に優れている。さらに、液体、液体金属、蒸気を可動部材に使用する場合と比べ、高度な封止技術を必要としないため、安価に発電装置を得ることができる。   Further, in the electrostatic induction power generating device 1 of the present embodiment, the movable member 9 is formed of a solid metal. Since the external force transmission efficiency is good compared to the fluid, the moving speed is high, and the kinetic energy that is the source of conversion of the obtained electrical energy is high. Further, since the movement of the movable member made of a solid metal is used for the capacity change for power generation, a large change in electric capacity can be obtained as compared with the fluid or the solid dielectric movable member. In addition, since solid metals generally exhibit good ductility and malleability, they are more resistant to cracking and chipping due to vibration impacts and are more durable than solid dielectrics. Furthermore, compared with the case where liquid, liquid metal, or vapor is used for the movable member, an advanced sealing technique is not required, so that the power generation device can be obtained at low cost.

さらに可動部材９が貫通孔１５を備え、貫通孔１５に棒状電極５が接触するように挿通されていることにより、可動部材９の管状部材２内部での移動が安定して行うことできるため、可動部材９と管状部材２との接触が防止され、損傷により発電が不可能になったり発電効率が低下したりすることを防止できる。   Furthermore, since the movable member 9 includes the through-hole 15 and the rod-shaped electrode 5 is inserted into the through-hole 15 so that the movement of the movable member 9 within the tubular member 2 can be performed stably, Contact between the movable member 9 and the tubular member 2 is prevented, and it is possible to prevent power generation from becoming impossible or power generation efficiency from being reduced due to damage.

また、本実施例の静電誘導型発電装置１は、可動部材９は棒状電極５と接触しているため、可動部材９は棒状電極５と同電位である。また、可動部材９の断面形状が管状部材２と同じであることから、可動部材９を筒状電極３及びエレクトレット部７に一層近付けることが可能となる。エレクトレット部７と可動部材９との間の距離が近ければ近い程、電極間の電気容量は増大する。そのため、可動部材９がエレクトレット部７の帯電による電場外から電場内へ進入した際の、電極間の電気容量の変化量をより大きくすることが可能となり、より発電効率を高めることができる。   Further, in the electrostatic induction power generating device 1 of the present embodiment, since the movable member 9 is in contact with the rod-shaped electrode 5, the movable member 9 is at the same potential as the rod-shaped electrode 5. Moreover, since the cross-sectional shape of the movable member 9 is the same as that of the tubular member 2, the movable member 9 can be brought closer to the cylindrical electrode 3 and the electret part 7. The closer the distance between the electret part 7 and the movable member 9, the greater the capacitance between the electrodes. Therefore, when the movable member 9 enters the electric field from the outside of the electric field due to electrification of the electret part 7, the amount of change in the electric capacity between the electrodes can be increased, and the power generation efficiency can be further increased.

また、本実施例の静電誘導型発電装置１は、管状部材２の両端部に弾力性のある緩衝体１７ｂ、１７ｃが設けられていることにより、可動部材９と移動規制部１２ｂ、１２ｃの接触による破損を防止することができる。   Further, the electrostatic induction power generating device 1 of the present embodiment is provided with elastic buffer bodies 17b and 17c at both ends of the tubular member 2, so that the movable member 9 and the movement restricting portions 12b and 12c Damage due to contact can be prevented.

なお、管状部材２内の空間２ａの長手方向の長さ、特に緩衝体１７ｂ、１７ｃの端面から筒状電極３の端部までの長さは、可動部材９と同じ、もしくはやや大きく設定することが好ましい。この場合、筒状電極３と棒状電極５との間の空間の電場の変化量が最大となり、最も効率よく発電を行うことが可能となる。   The length of the space 2a in the tubular member 2 in the longitudinal direction, particularly the length from the end faces of the buffer bodies 17b and 17c to the end of the cylindrical electrode 3 is set to be the same as or slightly larger than that of the movable member 9. Is preferred. In this case, the amount of change in the electric field in the space between the cylindrical electrode 3 and the rod-shaped electrode 5 is maximized, and power generation can be performed most efficiently.

＜第２実施形態＞
次に、本発明の第２実施形態の静電誘導型発電装置について、図面を参照して説明する。図３は第２実施形態の静電誘導型発電装置の縦断面図である。図４は図３に示す第２実施形態の静電誘導型発電装置のＢ−Ｂ’線における矢視方向断面図である。 Second Embodiment
Next, an electrostatic induction power generating device according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a longitudinal sectional view of the electrostatic induction power generating device of the second embodiment. FIG. 4 is a cross-sectional view in the direction of the arrows along the line BB ′ of the electrostatic induction power generating device of the second embodiment shown in FIG.

第２の実施形態の静電誘導型発電装置１００は、図３乃至図４に示す通り、管状部材２と、管状部材２の外面に設けられて、その一部にエレクトレット部１０７が形成されている筒状電極３と、管状部材２内部の空間２ａ内に、管状部材２の軸線と平行に延びるよう配設されている棒状電極５と、棒状電極５が挿通される貫通孔を有し、棒状電極５上を長手方向に往復移動することのできる可動部材１０９とから構成されている。第１実施形態の静電誘導型発電装置１と比べ、エレクトレット部１０７及び可動部材１０９の構成が異なっている。以降の説明は、第１実施形態と異なる点についてのみ行い、第１実施形態と同様の点については、同様の符号を付し、説明を省略する。   As shown in FIGS. 3 to 4, the electrostatic induction power generating device 100 of the second embodiment is provided on the tubular member 2 and the outer surface of the tubular member 2, and an electret part 107 is formed on a part thereof. A cylindrical electrode 3, a rod-shaped electrode 5 disposed in the space 2 a inside the tubular member 2 so as to extend in parallel with the axis of the tubular member 2, and a through-hole through which the rod-shaped electrode 5 is inserted, The movable member 109 is capable of reciprocating in the longitudinal direction on the rod-shaped electrode 5. Compared to the electrostatic induction power generation device 1 of the first embodiment, the configurations of the electret part 107 and the movable member 109 are different. The following description will be made only on points that are different from the first embodiment, and the same points as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

エレクトレット部１０７は、筒状電極３の内面側に形成されている。エレクトレット部１０７は、帯状のエレクトレット１１７を、管状部材２の長手方向に間隔をおいて３箇所設けて形成される。材質、形成方法は第１実施形態のエレクトレット部７と同一であるため、記載を省略する。   The electret part 107 is formed on the inner surface side of the cylindrical electrode 3. The electret part 107 is formed by providing three strip-like electrets 117 at intervals in the longitudinal direction of the tubular member 2. Since the material and the forming method are the same as those of the electret portion 7 of the first embodiment, description thereof is omitted.

可動部材１０９は、第１実施形態の可動部材９を移動方向に分断した形状である固形状金属部１１９と、同様の形状かつ同様の大きさの絶縁体からなる絶縁部１２９とを移動方向に交互に積層させることで形成される。本実施例では、積層数は固形状金属部１１９が３層、絶縁部１２９が２層であり、可動部材１０９の移動方向（長手方向）の全長は第１実施形態の可動部材９と同様である。絶縁体１２９にはアクリル樹脂を用いた。   The movable member 109 includes a solid metal part 119 having a shape obtained by dividing the movable member 9 of the first embodiment in the moving direction and an insulating part 129 made of an insulator having the same shape and the same size in the moving direction. It is formed by alternately laminating. In this example, the number of stacked layers is three for the solid metal part 119 and two for the insulating part 129, and the total length in the moving direction (longitudinal direction) of the movable member 109 is the same as that of the movable member 9 of the first embodiment. is there. An acrylic resin was used for the insulator 129.

また、可動部材１０９の左右両側面の中心を結ぶ線上には、移動方向に延びる貫通孔１１５が、第１実施形態の貫通孔１５と同様に設けられており、棒状電極５が挿通されている。   Further, on the line connecting the centers of the left and right side surfaces of the movable member 109, a through hole 115 extending in the moving direction is provided in the same manner as the through hole 15 of the first embodiment, and the rod-shaped electrode 5 is inserted therethrough. .

本実施例の静電誘導型発電装置１００の動作は、第１実施形態と同様である。ただし、可動部材１０９の移動方向に固形状金属部１１９と絶縁部１２９とが交互に積層され、かつエレクトレット部１０７が少なくとも２つのエレクトレット１１７が、管状部材２の長手方向に間隔をおいて設けられていることにより、筒状電極３と棒状電極５との間に複数の電場が形成され、そこに複数の固形状金属が出入りすることが可能になる。そのことにより、可動部材の小さな動きで複数箇所にて同時に電気容量変化が発生するため、発電効率を向上させることができる。よって、第一の実施形態と異なり、管状部材２内の空間２ａの長手方向の長さの中で緩衝体１７ｂ、１７ｃの端面から筒状電極３の端部までの長さを、可動部材１０９よりも小さく設定することも可能である。また、可動物が金属と樹脂の積層なので振動による衝撃耐性も高く、信頼性の高い発電装置となる。   The operation of the electrostatic induction power generating device 100 of this example is the same as that of the first embodiment. However, the solid metal portions 119 and the insulating portions 129 are alternately stacked in the moving direction of the movable member 109, and the electret portion 107 is provided with at least two electrets 117 spaced apart in the longitudinal direction of the tubular member 2. As a result, a plurality of electric fields are formed between the cylindrical electrode 3 and the rod-shaped electrode 5, and a plurality of solid metals can enter and exit there. As a result, a change in electric capacity is simultaneously generated at a plurality of locations with a small movement of the movable member, so that power generation efficiency can be improved. Therefore, unlike the first embodiment, the length from the end face of the buffer bodies 17b and 17c to the end of the cylindrical electrode 3 in the length in the longitudinal direction of the space 2a in the tubular member 2 is set to the movable member 109. It is also possible to set a smaller value. In addition, since the movable object is a laminate of metal and resin, the impact resistance due to vibration is high, and the power generator is highly reliable.

なお、エレクトレット部１０７を形成する３箇所のエレクトレット１１７の幅及び間隔と、可動部材１０９を形成する３つの固形状金属１１９の幅（厚さ）及び間隔とが同じであると、複数箇所での電気容量変化が同期して発生し、より効率のよい発電ができるため、より望ましい。   In addition, when the width and thickness of the three electrets 117 that form the electret part 107 and the width (thickness) and spacing of the three solid metals 119 that form the movable member 109 are the same, It is more desirable because the change in electric capacity occurs in synchronism and more efficient power generation is possible.

＜第３実施形態＞
次に、本発明の第３実施形態の静電誘導型発電装置について、図面を参照して説明する。図５は第３実施形態の静電誘導型発電装置の縦断面図である。図６は図５に示す第３実施形態の静電誘導型発電装置のＣ−Ｃ’線における矢視方向断面図である。 <Third Embodiment>
Next, an electrostatic induction power generating device according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a longitudinal sectional view of the electrostatic induction power generating device of the third embodiment. 6 is a cross-sectional view in the direction of the arrows along the line CC ′ of the electrostatic induction power generating device of the third embodiment shown in FIG.

第３の実施形態の静電誘導型発電装置２００は、図５乃至図６に示す通り、管状部材２と、管状部材２の外面に設けられている筒状電極２０３と、管状部材２内部の空間２ａ内に、管状部材２の軸線と平行に延びるよう配設されている棒状電極５と、棒状電極５が挿通される貫通孔を有し、棒状電極５上を長手方向に往復移動することができ、表面の一部にエレクトレット部２０７が設けられている可動部材２０９とから構成されている。第１実施形態の静電誘導型発電装置１と比べ、筒状電極２０３、エレクトレット部２０７及び可動部材２０９の構成が異なっている。以降の説明は、第１実施形態と異なる点についてのみ行い、第１実施形態と同様の点については、同様の符号を付し、説明を省略する。   As shown in FIGS. 5 to 6, the electrostatic induction power generating device 200 of the third embodiment includes a tubular member 2, a tubular electrode 203 provided on the outer surface of the tubular member 2, and the inside of the tubular member 2. The space 2a has a rod-shaped electrode 5 disposed so as to extend in parallel with the axis of the tubular member 2, and a through-hole through which the rod-shaped electrode 5 is inserted, and reciprocally moves on the rod-shaped electrode 5 in the longitudinal direction. And a movable member 209 having an electret part 207 provided on a part of the surface. Compared to the electrostatic induction power generation device 1 of the first embodiment, the configurations of the cylindrical electrode 203, the electret part 207, and the movable member 209 are different. The following description will be made only on points that are different from the first embodiment, and the same points as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

筒状電極２０３は、第１実施形態の筒状電極３を、管状部材２の長手方向に分断した形状である電極部２１３と、同様の形状かつ同様の大きさの絶縁体からなる絶縁部２２３とを、長手方向に交互に配設することで形成される。本実施例では、配設数は電極部２１３が３つ、絶縁部２２３が２つである。絶縁部２２３にはアクリル樹脂を用いた。また、筒状電極２０３は絶縁テープ１３によって管状部材２の表面に固定されている。この絶縁テープ１３には図示しない孔が形成されており、この孔を通して、各電極部２１３が配線２０に接続されている。   The cylindrical electrode 203 includes an electrode part 213 having a shape obtained by dividing the cylindrical electrode 3 of the first embodiment in the longitudinal direction of the tubular member 2, and an insulating part 223 made of an insulator having the same shape and the same size. Are alternately arranged in the longitudinal direction. In this embodiment, the number of arrangements is three for the electrode portions 213 and two for the insulating portions 223. An acrylic resin was used for the insulating portion 223. The cylindrical electrode 203 is fixed to the surface of the tubular member 2 by the insulating tape 13. A hole (not shown) is formed in the insulating tape 13, and each electrode portion 213 is connected to the wiring 20 through the hole.

管状部材２の長さは、その内部の空間２ａにおいて可動部材２０９が移動した際に、可動部材２０９の表面に設けられているエレクトレット部２０７と面している、筒状電極２０３に設けられている電極部２１３の表面積が変化することが可能な長さである。   The length of the tubular member 2 is provided on the cylindrical electrode 203 facing the electret part 207 provided on the surface of the movable member 209 when the movable member 209 moves in the space 2a inside. This is the length that allows the surface area of the electrode part 213 to be changed.

可動部材２０９は、低抵抗ステンレスからなる固形状金属によって形成された円柱である。可動部材２０９は管状部材２内の空間２ａに対して、断面方向の大きさをほぼ同じに形成されており、空間２ａの長手方向にのみ自在に移動する。   The movable member 209 is a cylinder formed of a solid metal made of low resistance stainless steel. The movable member 209 is formed in substantially the same size in the cross-sectional direction with respect to the space 2a in the tubular member 2, and moves freely only in the longitudinal direction of the space 2a.

なお、可動部材２０９の形状は円柱にて例示したが、この形状には限定されない。ただし、この場合も管状部材２内部の空間２ａと同じ断面形状を有することが望ましい。   In addition, although the shape of the movable member 209 was illustrated with the cylinder, it is not limited to this shape. However, also in this case, it is desirable to have the same cross-sectional shape as the space 2 a inside the tubular member 2.

また、可動部材２０９の左右両側面の中心を結ぶ線上には、移動方向に延びる貫通孔２１５が、第１実施形態の貫通孔１５と同様に設けられており、棒状電極５が挿通されている。   Further, on the line connecting the centers of the left and right side surfaces of the movable member 209, a through hole 215 extending in the moving direction is provided in the same manner as the through hole 15 of the first embodiment, and the rod-like electrode 5 is inserted. .

可動部材２０９の外周には、３つのエレクトレット２１７からなるエレクトレット部２０７が設けられている。エレクトレット２１７は、帯状形状で、可動部材２０９の外周に巻回されて形成されている。エレクトレット部２０７は、エレクトレット２１７が、可動部材２０９の移動方向に間隔をおいて３つ形成されて設けられる。材質、形成方法は第１実施形態のエレクトレット部７と同一であるため、記載を省略する。   An electret portion 207 including three electrets 217 is provided on the outer periphery of the movable member 209. The electret 217 has a band shape and is formed by being wound around the outer periphery of the movable member 209. The electret part 207 is provided with three electrets 217 formed at intervals in the moving direction of the movable member 209. Since the material and the forming method are the same as those of the electret portion 7 of the first embodiment, description thereof is omitted.

本実施例の静電誘導型発電装置２００の動作は、第１実施形態、第２実施形態と同様である。ただし、筒状電極２０３が、金属部２１３と絶縁部１２９とが交互に形成され、かつ可動部材２０９の外周に設けられているエレクトレット部２０７が、少なくとも２つのエレクトレット２１７が、可動部材２０９の移動方向に間隔をおいて設けられていることにより、筒状電極２０３と棒状電極５との間の空間に、エレクトレットが頻繁に出入りすることで、筒状電極２０３とエレクトレット２１７との間で電気容量変化が頻繁に発生する。よって、発電効率を向上させることができる。また、可動部材２０９に設けられている貫通孔２１５に棒状電極５が挿通されていることにより、可動部材２０９の移動が安定するため、管状部材２と可動部材２０９とが不用意に接触せず、可動部材２０９の外周に設けられているエレクトレット部２０７が損傷することがないため、長期にわたって安定して発電を行うことができる。   The operation of the electrostatic induction power generating device 200 of this example is the same as that of the first embodiment and the second embodiment. However, the cylindrical electrode 203 is formed by alternately forming the metal portions 213 and the insulating portions 129, and the electret portions 207 provided on the outer periphery of the movable member 209 are at least two electrets 217 are moved by the movable member 209. Since the electrets frequently enter and leave the space between the cylindrical electrode 203 and the rod-shaped electrode 5 by being provided at intervals in the direction, the electric capacity between the cylindrical electrode 203 and the electret 217 is increased. Changes occur frequently. Therefore, power generation efficiency can be improved. Moreover, since the rod-shaped electrode 5 is inserted into the through-hole 215 provided in the movable member 209, the movement of the movable member 209 is stabilized, so that the tubular member 2 and the movable member 209 do not contact carelessly. In addition, since the electret part 207 provided on the outer periphery of the movable member 209 is not damaged, it is possible to generate power stably over a long period of time.

なお、エレクトレット部２０７を形成する３箇所のエレクトレット２１７の幅及び間隔と、筒状電極２０３を形成する３箇所の電極部２１３の幅及び間隔とが同じであると、複数箇所での電気容量変化が同期して発生し、より効率のよい発電ができるため、より望ましい。   In addition, if the width and interval of the three electrets 217 forming the electret portion 207 and the width and interval of the three electrode portions 213 forming the cylindrical electrode 203 are the same, the capacitance change at a plurality of locations. Are more desirable because they are generated synchronously and more efficient power generation is possible.

＜第４実施形態＞
次に、本発明の第４実施形態の静電誘導型発電装置について、図面を参照して説明する。図７は第４実施形態の静電誘導型発電装置の縦断面図である。図８は図７に示す第４実施形態の静電誘導型発電装置のＤ−Ｄ’線における矢視方向断面図である。 <Fourth embodiment>
Next, an electrostatic induction power generating device according to a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a longitudinal sectional view of the electrostatic induction power generating device of the fourth embodiment. FIG. 8 is a cross-sectional view in the direction of the arrows along the line DD ′ of the electrostatic induction power generating device of the fourth embodiment shown in FIG.

第４の実施形態の静電誘導型発電装置３００は、図７乃至図８に示す通り、管状部材２と、管状部材２の外面に設けられて、その一部にエレクトレット部７が形成されている筒状電極３と、管状部材２内部の空間２ａ内に、管状部材２の軸線と平行に延びるよう配設されている棒状電極５と、棒状電極５が挿通される貫通孔を有し、棒状電極５上を長手方向に往復移動することができる可動部材３０９と、から構成されている。第１実施形態の静電誘導型発電装置１と比べ、可動部材３０９の構成が異なっている。以降の説明は、第１実施形態と異なる点についてのみ行い、第１実施形態と同様の点については、同様の符号を付し、説明を省略する。   As shown in FIGS. 7 to 8, the electrostatic induction power generating device 300 of the fourth embodiment is provided on the tubular member 2 and the outer surface of the tubular member 2, and the electret portion 7 is formed on a part thereof. A cylindrical electrode 3, a rod-shaped electrode 5 disposed in the space 2 a inside the tubular member 2 so as to extend in parallel with the axis of the tubular member 2, and a through-hole through which the rod-shaped electrode 5 is inserted, And a movable member 309 that can reciprocate in the longitudinal direction on the rod-shaped electrode 5. Compared to the electrostatic induction power generation device 1 of the first embodiment, the configuration of the movable member 309 is different. The following description will be made only on points that are different from the first embodiment, and the same points as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

可動部材３０９は、低抵抗ステンレスからなる固形状金属によって形成された円柱である。可動部材は、管状部材２内の空間２ａに対して、断面方向の大きさをほぼ同じに形成されており、空間２ａの長手方向にのみ自在に移動する。   The movable member 309 is a cylinder formed of a solid metal made of low resistance stainless steel. The movable member is formed in substantially the same size in the cross-sectional direction with respect to the space 2a in the tubular member 2, and moves freely only in the longitudinal direction of the space 2a.

可動部材３０９の左右両側面の中心を結ぶ線上には、移動方向に延びる貫通孔３１５が、第１実施形態の貫通孔１５と同様に設けられている。貫通孔３１５は円形の断面形状をなし、その断面の大きさは、棒状電極５とほぼ同じである。貫通孔３１５には棒状電極５が可動部材３０９に接触するように挿通されている。   On the line connecting the centers of the left and right side surfaces of the movable member 309, a through hole 315 extending in the moving direction is provided in the same manner as the through hole 15 of the first embodiment. The through-hole 315 has a circular cross-sectional shape, and the size of the cross-section is substantially the same as that of the rod-shaped electrode 5. The rod-shaped electrode 5 is inserted into the through hole 315 so as to contact the movable member 309.

また、可動部材３０９には、貫通孔３１５とは別に、移動方向に延びる第２の貫通孔３１９が２つ設けられている。第２の貫通孔３１９は円形の断面形状をなしている。   In addition, the movable member 309 is provided with two second through holes 319 extending in the moving direction separately from the through holes 315. The second through hole 319 has a circular cross-sectional shape.

なお、貫通孔３１５、３１９の断面形状は円形に限定されず、楕円形、四角形等の多角形でもよい。ただし、貫通孔３１５の断面形状は、棒状電極５と同じ断面形状であることが望ましい。また、第２の貫通孔３１９の個数は２個に限定されず、１個でも、３個以上でもよい。   The cross-sectional shape of the through holes 315 and 319 is not limited to a circle, and may be an ellipse or a polygon such as a rectangle. However, the cross-sectional shape of the through hole 315 is desirably the same cross-sectional shape as the rod-shaped electrode 5. Further, the number of second through holes 319 is not limited to two, and may be one or three or more.

本実施例の静電誘導型発電装置３００の動作は、第１実施形態と同様である。ただし、可動部材３０９に棒状電極５が挿通されていない第２の貫通孔３１９が設けられていることにより、第２の貫通孔３１９が通気口になり、移動による空気の抵抗を減少することができるため、高い速度が得られ、得られる電気エネルギーの変換元になる運動エネルギーが高くなる。これは本実施例のように可動部材３０９が管状部材２のような閉じた空間にある場合には特に有効である。   The operation of the electrostatic induction power generating device 300 of this example is the same as that of the first embodiment. However, since the second through hole 319 in which the rod-like electrode 5 is not inserted is provided in the movable member 309, the second through hole 319 becomes a vent hole and air resistance due to movement may be reduced. Therefore, a high speed can be obtained, and the kinetic energy that becomes the conversion source of the obtained electric energy becomes high. This is particularly effective when the movable member 309 is in a closed space like the tubular member 2 as in this embodiment.

なお、本発明は、詳述した実施形態に限定されるものではなく、本開示の要旨を逸脱しない範囲において種々変更を加えてもよい。例えば、筒状電極３は管状部材２の内面ではなく、管状部材２の外面や内部に形成されていてもよい。この場合でも可動部材９、１０９、２０９、３０９が移動することにより、電極間の電気容量は変化し、電気エネルギーを取り出すことが可能である。   The present invention is not limited to the embodiments described in detail, and various modifications may be made without departing from the gist of the present disclosure. For example, the cylindrical electrode 3 may be formed not on the inner surface of the tubular member 2 but on the outer surface or inside of the tubular member 2. Even in this case, when the movable members 9, 109, 209, and 309 move, the electric capacity between the electrodes changes, and it is possible to extract electric energy.


１ 静電誘導型発電装置
２ 管状部材
３ 筒状電極
５ 棒状電極
７ エレクトレット部
９ 可動部材
１２ｂ、１２ｃ 移動規制部
１７ｂ、１７ｃ 緩衝体
１５、１１５、２１５、３１５ 貫通孔
１００ 第２実施形態の静電誘導型発電装置
１０７ エレクトレット部
１０９ 可動部材
１１７ エレクトレット
１１９ 固形状金属部
１２９ 絶縁部
２００ 第３実施形態の静電誘導型発電装置
２０３ 筒状電極
２０７ エレクトレット部
２０９ 可動部材
２１３ 電極部
２１９ 可動部材
２２３ 絶縁部
３００ 第４実施形態の静電誘導型発電装置
３０９ 可動部材
DESCRIPTION OF SYMBOLS 1 Static induction type generator 2 Tubular member 3 Cylindrical electrode 5 Rod-shaped electrode 7 Electret part 9 Movable member 12b, 12c Movement control part 17b, 17c Buffer body 15,115,215,315 Through-hole 100 Static of 2nd Embodiment Electric induction power generation apparatus 107 Electret part 109 Movable member 117 Electret 119 Solid metal part 129 Insulating part 200 Electrostatic induction power generation apparatus 203 of the third embodiment Tubular electrode 207 Electret part 209 Movable member 213 Electrode part 219 Movable member 223 Insulating part 300 Electrostatic induction power generator 309 of the fourth embodiment Movable member

Claims (7)

絶縁物質にて形成される筒状の管状部材と、
前記管状部材の両端に設けられている移動規制部と、
前記管状部材内部に往復移動可能に設けられた筒状の可動部材であって、少なくとも一部が固形状金属からなり、往復移動する方向と同一方向に延びる貫通孔が設けられている可動部材と、
前記管状部材の軸線と平行に設けられ、前記可動部材の貫通孔に挿通された棒状の中心金属部材と、
前記管状部材に設けられている筒状電極とを備え、
前記可動部材の外周の一部、または前記筒状電極の一部のいずれかにエレクトレット部が形成されており、
前記可動部材の移動によって前記エレクトレット部と面している前記筒状電極または前記可動部材の表面積が変化することが可能な長さを、前記管状部材が有することを特徴とする静電誘導型発電装置。 A tubular member formed of an insulating material;
A movement restricting portion provided at both ends of the tubular member;
A cylindrical movable member provided in the tubular member so as to be capable of reciprocating, wherein at least a part is made of solid metal and provided with a through hole extending in the same direction as the reciprocating direction. ,
A rod-shaped central metal member provided parallel to the axis of the tubular member and inserted through the through hole of the movable member;
A cylindrical electrode provided on the tubular member,
An electret part is formed on either a part of the outer periphery of the movable member or a part of the cylindrical electrode,
The electrostatic induction power generation characterized in that the tubular member has a length capable of changing a surface area of the cylindrical electrode or the movable member facing the electret portion by the movement of the movable member. apparatus. 前記可動部材と前記中心金属部材とが、前記貫通孔において接触するように配設されていることを特徴とする請求項１に記載の静電誘導型発電装置。   The electrostatic induction power generating device according to claim 1, wherein the movable member and the central metal member are disposed so as to contact each other in the through hole. 前記可動部材は、固形状金属と絶縁体とが移動方向に交互に積層されることによって構成され、そのうち少なくとも２層が前記固形状金属であり、
前記筒状電極の一部に形成されている前記エレクトレット部は、エレクトレットが形成されている箇所と形成されていない箇所が交互に形成され、そのうち少なくとも２箇所はエレクトレットが形成されていることを特徴とする請求項１乃至２に記載の静電誘導型発電装置。 The movable member is configured by alternately laminating a solid metal and an insulator in a moving direction, of which at least two layers are the solid metal,
The electret portion formed on a part of the cylindrical electrode is formed such that a portion where the electret is formed and a portion where the electret is not formed are alternately formed, and at least two of the electret portions are formed with the electret. The electrostatic induction power generating device according to claim 1 or 2. 前記筒状電極は、固形状金属と絶縁体とが前記可動部材の運動方向に交互に形成されることによって構成され、そのうち少なくとも２箇所が前記固形状金属であり、
前記可動部材の外周の一部に形成されている前記エレクトレット部は、エレクトレットが形成されている箇所と形成されていない箇所が交互に形成され、そのうち少なくとも２箇所はエレクトレットが形成されていることを特徴とする請求項１乃至２に記載の静電誘導型発電装置。 The cylindrical electrode is configured by alternately forming a solid metal and an insulator in the moving direction of the movable member, at least two of which are the solid metal,
The electret portion formed on a part of the outer periphery of the movable member is formed such that a portion where the electret is formed and a portion where the electret is not formed are formed alternately, and at least two of the electret portions are formed. The electrostatic induction power generating device according to claim 1 or 2, characterized in that 前記移動規制部の内面側には、弾力性のある緩衝体が設けられていることを特徴とする請求項１乃至４に記載の静電誘導型発電装置。   5. The electrostatic induction power generating device according to claim 1, wherein an elastic buffer is provided on an inner surface side of the movement restricting portion. 前記管状部材と前記可動部材とは、同じ断面形状であることを特徴とする請求項１乃至５に記載の静電誘導型発電装置。   The electrostatic induction power generating device according to claim 1, wherein the tubular member and the movable member have the same cross-sectional shape. 前記可動部材には、前記中心配線金属が挿通された貫通孔以外にも、往復移動する方向に延びる貫通孔が設けられていることを特徴とする請求項１乃至６に記載の静電誘導型発電装置。
The electrostatic induction type according to claim 1, wherein the movable member is provided with a through hole extending in a reciprocating direction other than the through hole through which the central wiring metal is inserted. Power generation device.
JP2009226548A 2009-09-30 2009-09-30 Electrostatic induction generation apparatus Pending JP2011078198A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012152010A (en) * 2011-01-19 2012-08-09 Seiko Epson Corp Power generator
JP2013055724A (en) * 2011-09-01 2013-03-21 Kansai Univ Power generator
JP2014217130A (en) * 2013-04-24 2014-11-17 株式会社ビスキャス Vibration generator
JP2015002607A (en) * 2013-06-14 2015-01-05 株式会社ビスキャス Vibration power generation body

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012152010A (en) * 2011-01-19 2012-08-09 Seiko Epson Corp Power generator
JP2013055724A (en) * 2011-09-01 2013-03-21 Kansai Univ Power generator
US9413272B2 (en) 2011-09-01 2016-08-09 Rohm Co., Ltd. Power generation device having a dielectric body and an electret
JP2014217130A (en) * 2013-04-24 2014-11-17 株式会社ビスキャス Vibration generator
JP2015002607A (en) * 2013-06-14 2015-01-05 株式会社ビスキャス Vibration power generation body

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