JP5023244B1 - Vibration power generator - Google Patents

Vibration power generator Download PDF

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JP5023244B1
JP5023244B1 JP2012005632A JP2012005632A JP5023244B1 JP 5023244 B1 JP5023244 B1 JP 5023244B1 JP 2012005632 A JP2012005632 A JP 2012005632A JP 2012005632 A JP2012005632 A JP 2012005632A JP 5023244 B1 JP5023244 B1 JP 5023244B1
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piezoelectric
diaphragm
power generation
vibration power
notch
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JP2013146143A (en
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浩平 速水
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浩平 速水
株式会社音力発電
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Abstract

【課題】圧電素子の発電効率を向上させることができる、振動力発電装置を提供することを目的とする。
【解決手段】振動力発電装置1は、振動による圧力変動により発電する振動力発電装置1であって、圧電素子10と、当該圧電素子10に振動を伝える振動板20と、を備え、振動板20の少なくとも一方の側面に切欠部21を形成し、圧電素子10を、振動板20における切欠部21が設けられている側面とは反対側の側面のうち切欠部21と対応する部分に配置している。
【選択図】図2
An object of the present invention is to provide a vibration power generator capable of improving the power generation efficiency of a piezoelectric element.
A vibration force power generation device is a vibration force power generation device that generates power by pressure fluctuation caused by vibration, and includes a piezoelectric element and a vibration plate that transmits vibration to the piezoelectric element. A notch portion 21 is formed on at least one side surface of the piezoelectric element 20, and the piezoelectric element 10 is disposed on a portion of the diaphragm 20 on the side opposite to the side surface where the notch portion 21 is provided, corresponding to the notch portion 21. ing.
[Selection] Figure 2

Description

本発明は、振動力発電装置に関する。   The present invention relates to a vibration power generator.
従来、圧電素子を用いた発電装置が知られている。発電装置は、圧電素子に何らかの方法で外部から力を加えることにより、圧電素子を変形させて発電する。圧電素子を変形させるためには、例えば、圧電素子に振動や風力等による圧力を加えて変形させること(例えば、特許文献1、特許文献2参照)が考えられている。   Conventionally, a power generation device using a piezoelectric element is known. The power generation device generates power by deforming the piezoelectric element by applying a force to the piezoelectric element from the outside in some way. In order to deform the piezoelectric element, for example, it is considered to deform the piezoelectric element by applying pressure by vibration, wind force, or the like (see, for example, Patent Document 1 and Patent Document 2).
特開平7−49388号公報JP 7-49388 A 特開平11−303726号公報JP-A-11-303726
しかしながら、上述した従来の発電装置においては、圧電素子の発電効率に関して改善の余地があった。例えば、圧電素子の少なくとも一方の側面をすべて覆うように振動板が接合されている場合であって、振動板の材質が圧電素子の材質よりも硬質である場合、又は、圧電素子の厚みが振動板の厚みよりも厚い場合には、振動板が変形しづらくなり、それに伴って圧電素子の変形量も小さくなることから、圧電素子の発電効率が低下するという問題があった。   However, the conventional power generation apparatus described above has room for improvement with respect to the power generation efficiency of the piezoelectric element. For example, when the diaphragm is joined so as to cover at least one side surface of the piezoelectric element, and the material of the diaphragm is harder than the material of the piezoelectric element, or the thickness of the piezoelectric element vibrates If the thickness is greater than the thickness of the plate, the diaphragm is difficult to deform, and the amount of deformation of the piezoelectric element is reduced accordingly, which causes a problem that the power generation efficiency of the piezoelectric element is reduced.
本発明は、上記に鑑みてなされたものであって、圧電素子の発電効率を向上させることができる、振動力発電装置を提供することを目的とする。   This invention is made | formed in view of the above, Comprising: It aims at providing the oscillating force power generator which can improve the electric power generation efficiency of a piezoelectric element.
上述した課題を解決し、目的を達成するために、請求項1に記載の振動力発電装置は、振動による圧力変動により発電する振動力発電装置であって、圧電素子と、前記圧電素子に振動を伝える振動板と、を備え、前記振動板の少なくとも一方の側面に切欠部を形成し、前記圧電素子を、前記振動板における前記切欠部が設けられている側面とは反対側の側面のうち当該切欠部と対応する部分に配置し、前記切欠部の側面の少なくとも一部に、段差部を設けている。 In order to solve the above-described problems and achieve the object, the vibration power generation device according to claim 1 is a vibration force power generation device that generates power by pressure fluctuation caused by vibration, and includes vibrations generated in the piezoelectric element and the piezoelectric element. A diaphragm that transmits the piezoelectric element, a notch is formed on at least one side of the diaphragm, and the piezoelectric element is disposed on a side of the diaphragm opposite to the side on which the notch is provided. It arrange | positions in the part corresponding to the said notch part, and provided the level | step-difference part in at least one part of the side surface of the said notch part.
また、請求項2に記載の振動力発電装置は、請求項1に記載の振動力発電装置において、前記段差部と、前記振動板とを相互に一体成形している。 The vibration power generation device according to claim 2 is the vibration power generation device according to claim 1, wherein the step portion and the diaphragm are integrally formed with each other.
また、請求項3に記載の振動力発電装置は、請求項1又は2に記載の振動力発電装置において、前記振動板に、前記圧電素子の変形が所定量に達した場合に当該圧電素子の変形を調整する変形調整手段を設けている。 According to a third aspect of the present invention, there is provided the vibration power generation apparatus according to the first or second aspect , wherein when the deformation of the piezoelectric element reaches a predetermined amount on the diaphragm, Deformation adjusting means for adjusting the deformation is provided.
請求項1に記載の振動力発電装置によれば、圧電素子を、振動板における切欠部が設けられている側面とは反対側の側面のうち切欠部と対応する部分に配置したので、当該切欠部が設けられていない構造に比べて、圧電素子の変形を促進させることができ、圧電素子の発電効率を向上させることができる。また、切欠部の側面の少なくとも一部に、段差部を設けたので、圧電素子や振動板における切欠部と対応する部分に割れやひび等を生じにくくすることができ、圧電素子や振動板における一定の耐久性を確保しながら、圧電素子の発電効率を向上させることができる。 According to the vibration power generation device of the first aspect, since the piezoelectric element is arranged in a portion corresponding to the notch portion of the side surface of the diaphragm opposite to the side surface on which the notch portion is provided, the notch Compared to a structure in which no part is provided, the deformation of the piezoelectric element can be promoted, and the power generation efficiency of the piezoelectric element can be improved. In addition, since the step portion is provided on at least a part of the side surface of the cutout portion, it is possible to make it difficult to cause cracks, cracks, or the like in portions corresponding to the cutout portion in the piezoelectric element or the diaphragm. The power generation efficiency of the piezoelectric element can be improved while ensuring a certain durability.
また、請求項に記載の振動力発電装置によれば、段差部と、振動板とを相互に一体成形したので、段差部に振動板を取り付ける手間を省くことができ、振動力発電装置の製造性を向上させることができる。 In addition, according to the vibration power generation device of the second aspect , since the step portion and the diaphragm are integrally formed with each other, the trouble of attaching the vibration plate to the step portion can be saved. Manufacturability can be improved.
また、請求項に記載の振動力発電装置によれば、振動板に、圧電素子の変形が所定量に達した場合に当該圧電素子の変形を調整する変形調整手段を設けたので、圧電素子の過度な引張変形を抑制することができ、当該引張変形による圧電素子の割れ等を防止することができる。 According to the vibration power generation apparatus of the third aspect , the vibration plate is provided with the deformation adjusting means for adjusting the deformation of the piezoelectric element when the deformation of the piezoelectric element reaches a predetermined amount. Excessive tensile deformation can be suppressed, and cracking of the piezoelectric element due to the tensile deformation can be prevented.
吸音部に代えて実施の形態1に係る振動力発電装置が適用された道路用遮音壁の概略の全体斜視図である。It is a whole perspective view of the outline of the sound insulation wall for roads to which the vibration power generator concerning Embodiment 1 was applied instead of the sound absorption part. 図1のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。It is an AA arrow sectional view of Drawing 1, (a) is a state before a vibration power generation device receives external force, (b) is an external force along the direction where a vibration power generation device goes to the outside from the inside of a road. (C) is a figure which shows the state which received the external force along the direction which the vibration power generation device goes to the inside from the outer side of a road. 実施の形態2に係る振動力発電装置のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。It is AA arrow sectional drawing of the vibration power generator which concerns on Embodiment 2, (a) is the state before a vibration power generator receives external force, (b) is a vibration power generator from the inside of a road. FIG. 5C is a diagram showing a state in which an external force is received along a direction toward the outside, and FIG. 8C is a diagram illustrating a state in which the vibration power generation apparatus receives an external force along a direction from the outside to the inside of the road. 実施の形態3に係る振動力発電装置のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。It is AA arrow sectional drawing of the vibration power generator which concerns on Embodiment 3, (a) is the state before a vibration power generator receives external force, (b) is a vibration power generator from the inside of a road. FIG. 5C is a diagram showing a state in which an external force is received along a direction toward the outside, and FIG. 8C is a diagram illustrating a state in which the vibration power generation apparatus receives an external force along a direction from the outside to the inside of the road. 実施の形態4に係る振動力発電装置のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。It is AA arrow sectional drawing of the vibration power generator which concerns on Embodiment 4, (a) is the state before a vibration power generator receives external force, (b) is a vibration power generator from the inside of a road. FIG. 5C is a diagram showing a state in which an external force is received along a direction toward the outside, and FIG. 8C is a diagram illustrating a state in which the vibration power generation apparatus receives an external force along a direction from the outside to the inside of the road.
以下に添付図面を参照して、この発明に係る振動力発電装置の実施の形態を詳細に説明する。ただし、これらの実施の形態によって本発明が限定されるものではない。   Embodiments of a vibration power generator according to the present invention will be described below in detail with reference to the accompanying drawings. However, the present invention is not limited by these embodiments.
〔実施の形態1〕
最初に、実施の形態1について説明する。この形態は、振動板の少なくとも一方の側面に切断隙間を有する切欠部を形成した形態である。
[Embodiment 1]
First, the first embodiment will be described. This form is a form in which a notch having a cutting gap is formed on at least one side surface of the diaphragm.
(構成)
実施の形態1に係る振動力発電装置の適用対象は、例えば遮音壁の吸音部、携帯電話機の集音部近傍等が挙げられるが、以下では、振動力発電装置を道路用遮音壁の吸音部に適用した場合を例として説明を行う。
(Constitution)
The application target of the vibration power generation device according to Embodiment 1 is, for example, the sound absorbing portion of the sound insulation wall, the vicinity of the sound collection portion of the mobile phone, and the like, but in the following, the vibration power generation device is applied to the sound absorption portion of the sound insulation wall for the road This will be described as an example.
まず、実施の形態1に係る振動力発電装置の構成について説明する。図1は吸音部に代えて実施の形態1に係る振動力発電装置が適用された道路用遮音壁の概略の全体斜視図である。図2は図1のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。なお、以下の説明では、図1のX方向を振動力発電装置の縦方向、図1のY方向を振動力発電装置の横方向、図1のZ方向を振動力発電装置の高さ方向とする。また。図1に示すように、道路用遮音壁には圧電素子10と、振動板20とによって構成された振動力発電装置1が複数設けられており、これら振動力発電装置1は相互に同一のものとする。このことから、以下では、図2に示す振動力発電装置1の要部(以下、「振動力発電装置1」と称する)について説明を行うものとする。   First, the configuration of the vibration power generator according to Embodiment 1 will be described. FIG. 1 is a schematic overall perspective view of a road sound insulating wall to which the vibration power generation apparatus according to Embodiment 1 is applied instead of a sound absorbing portion. 2 is a cross-sectional view taken along the line A-A in FIG. 1, (a) is a state before the vibration power generator is subjected to external force, and (b) is a direction in which the vibration power generator is directed from the inside to the outside of the road. The state which received external force along (c) is a figure which shows the state which received the external force along the direction which a vibration power generation device goes inside from the outer side of a road. In the following description, the X direction in FIG. 1 is the longitudinal direction of the vibration power generator, the Y direction in FIG. 1 is the lateral direction of the vibration power generator, and the Z direction in FIG. 1 is the height direction of the vibration power generator. To do. Also. As shown in FIG. 1, a plurality of vibration power generation devices 1 each including a piezoelectric element 10 and a diaphragm 20 are provided on a sound insulation wall for roads, and these vibration power generation devices 1 are identical to each other. To do. Therefore, in the following, the main part of the vibration power generation device 1 shown in FIG. 2 (hereinafter referred to as “vibration force power generation device 1”) will be described.
(構成−圧電素子)
図2に示すように、圧電素子10は、圧力により変形することで電気を生じる素子であり、例えば、チタン酸バリウム、ジルコニア等の圧電セラミックス、リチウムタンタレート(LiTaO3)等の圧電単結晶からなる。また、振動力発電装置1に設けられているすべての圧電素子10は、同一の薄角板状及び厚さにて形成されている。
なお、図示は省略するが、圧電素子10は、当該圧電素子10の一方の面にプラス端子、当該圧電素子10の他方の面にマイナス端子を有し、プラス端子と結線されたプラスリード線と、マイナス端子と結線されたマイナスリード線が引き出され、これらが図示しない制御回路を介して外部機器と接続されることで、当該外部機器に対して電力が供給される。ただし、圧電素子10と負荷との相互間に公知のブリッジ回路等の各種電気素子を配置してもよい。あるいは、圧電素子10として、若しくは圧電素子10に代えて、外力(歪み、屈曲、若しくは圧縮を生じさせる力を含む)により発電が可能な任意の素材を用いることができ、例えば、イオン導電性高分子の膜(ゲル)の両面に金属(金等)をメッキしたイオン高分子金属複合材料(IPMC:Ionic Polymer−Metal Composite)や、イオン導電性高分子ゲル膜(ICPF:Ionic Conducting Polymergel Film)、あるいは、これらIPMCやICPFを用いた人工筋肉を使用することができる。この点は、後述する他の実施の形態でも同じである。なお、圧電素子10の設置の詳細については、後述する。
(Configuration-Piezoelectric element)
As shown in FIG. 2, the piezoelectric element 10 is an element that generates electricity by being deformed by pressure. For example, the piezoelectric element 10 is composed of piezoelectric ceramics such as barium titanate and zirconia, and piezoelectric single crystals such as lithium tantalate (LiTaO 3). . Further, all the piezoelectric elements 10 provided in the vibration power generation device 1 are formed in the same thin plate shape and thickness.
Although not shown, the piezoelectric element 10 has a plus terminal on one side of the piezoelectric element 10 and a minus terminal on the other side of the piezoelectric element 10, and a plus lead wire connected to the plus terminal. The minus lead wire connected to the minus terminal is drawn out and connected to the external device via a control circuit (not shown), whereby electric power is supplied to the external device. However, various electric elements such as a known bridge circuit may be disposed between the piezoelectric element 10 and the load. Alternatively, as the piezoelectric element 10 or in place of the piezoelectric element 10, any material that can generate electric power by external force (including a force that causes distortion, bending, or compression) can be used. Ionic polymer metal composite material (IPMC: Ionic Polymer-Metal Composite) in which metal (gold) is plated on both surfaces of a molecular film (gel), ion conductive polymer gel film (ICPF: Ionic Conducting Polymer Gel Film), Alternatively, artificial muscles using these IPMC and ICPF can be used. This point is the same in other embodiments described later. Details of installation of the piezoelectric element 10 will be described later.
(構成−振動板)
振動板20は、圧電素子10に応力を加える支持体である。振動板20は、ステンレス薄板等の可撓性と耐久性を有する鋼材等からなる。これら振動板20は、同一の角板状及び厚さにて形成されている。
ここで、振動板20の形状については、具体的には、実施の形態1では、図2(a)に示すように、振動板20が繰り返し大きな振幅で振動できるように、振動板20のY方向の長さを圧電素子10のY方向の長さよりも長くすると共に、振動板20のZ方向の長さを圧電素子10のZ方向の長さと略同一にしている。また、振動板20の厚さについては、具体的には、実施の形態1では、図2(a)に示すように、振動板20の厚さを圧電素子10の厚さよりも厚くしている。
(Configuration-diaphragm)
The diaphragm 20 is a support that applies stress to the piezoelectric element 10. The diaphragm 20 is made of a steel material having flexibility and durability, such as a stainless steel thin plate. These diaphragms 20 are formed with the same square plate shape and thickness.
Here, specifically, in the first embodiment, as shown in FIG. 2A, the shape of the diaphragm 20 is such that the diaphragm 20 can repeatedly vibrate with a large amplitude. The length in the direction is longer than the length of the piezoelectric element 10 in the Y direction, and the length of the diaphragm 20 in the Z direction is substantially the same as the length of the piezoelectric element 10 in the Z direction. As for the thickness of the diaphragm 20, specifically, in the first embodiment, as shown in FIG. 2A, the thickness of the diaphragm 20 is made thicker than the thickness of the piezoelectric element 10. .
また、図2(a)に示すように、振動板20は、圧電素子10の底面側の側面と当接するように設けられており、圧電素子10に対して接着剤や固定具等により接合されている。   Further, as shown in FIG. 2A, the diaphragm 20 is provided so as to come into contact with the side surface on the bottom surface side of the piezoelectric element 10, and is joined to the piezoelectric element 10 by an adhesive, a fixture, or the like. ing.
また、図2(a)に示すように、振動板20の底面側の側面に、切断隙間を有する切欠部21が形成されている(なお、この切欠部21は、振動板20におけるZ方向の一方の端部から他方の端部にわたって形成されている)。切欠部21は、圧電素子10の変形を増長させるための変形増長手段である。この切欠部21は、矩形凹状に形成されており(あるいは、これに限られず、例えば三角凹状、円弧凹状等にて形成されてもよい)、振動板20の底面側の側面におけるY方向中央に配置されている。
ここで、この切欠部21の形状については、圧電素子10が設計発電量から計算される振幅で安定して振動できる形状が好ましく、具体的には、実施の形態1では、図2(a)に示すように、切欠部21のX方向の長さを振動板20の厚さの半分程度とし、且つ切欠部21のY方向の長さを圧電素子10のY方向の長さよりも短くして、切欠部21が形成されている。
Further, as shown in FIG. 2A, a notch 21 having a cutting gap is formed on the side surface on the bottom surface side of the diaphragm 20 (note that the notch 21 is formed in the Z direction of the diaphragm 20. Formed from one end to the other end). The notch 21 is a deformation increasing means for increasing the deformation of the piezoelectric element 10. The notch 21 is formed in a rectangular concave shape (or is not limited thereto, and may be formed in, for example, a triangular concave shape, an arc concave shape, etc.), and is formed at the center in the Y direction on the side surface on the bottom surface side of the diaphragm 20. Has been placed.
Here, the shape of the notch 21 is preferably a shape in which the piezoelectric element 10 can stably vibrate with the amplitude calculated from the design power generation amount. Specifically, in the first embodiment, FIG. As shown in FIG. 3, the length of the notch 21 in the X direction is about half the thickness of the diaphragm 20, and the length of the notch 21 in the Y direction is shorter than the length of the piezoelectric element 10 in the Y direction. A notch 21 is formed.
(圧電素子の設置の詳細)
次に、実施の形態1に係る圧電素子10の設置の詳細について説明する。図2(a)に示すように、実施の形態1では、圧電素子10は、振動板20における切欠部21が設けられている側面とは反対側の側面(例えば、図2(a)に示すように、振動板20の平面側の側面)のうち切欠部21と対応する部分に配置されている。
ここで、「振動板における切欠部が設けられている側面とは反対側の側面のうち切欠部と対応する部分」とは、振動板20の側面のうち圧電素子10が変形しやすい部分、すなわち、振動板20が振動している場合において、当該振動板20が上方又は下方へ凸状に撓んだ場合に、振動板20における切欠部21が設けられている側面とは反対側の側面のうち切欠部21の側面と重なり合う部分のことを意味する。具体的には、実施の形態1では、図2(a)、(b)に示すように、振動板20が下方へ凸状に撓んだ場合に、振動板20の平面側の側面のうち切欠部21の底面と、当該切欠部21の左側壁面と、当該切欠部21の右側壁面と重なり合う部分に、圧電素子10は配置されている。あるいは、これに限られず、例えば、振動板20の平面側の側面のうち切欠部21の底面、当該切欠部21の左側壁面、又は当該切欠部21の右側壁面と重なり合う部分に、圧電素子10は配置されてもよい。
(Details of installation of piezoelectric element)
Next, details of installation of the piezoelectric element 10 according to the first embodiment will be described. As shown in FIG. 2A, in the first embodiment, the piezoelectric element 10 has a side surface (for example, shown in FIG. 2A) opposite to the side surface of the diaphragm 20 where the notch 21 is provided. Thus, it arrange | positions in the part corresponding to the notch part 21 among the side surfaces of the flat side of the diaphragm 20).
Here, “the portion corresponding to the cutout portion of the side surface of the diaphragm opposite to the side where the cutout portion is provided” refers to the portion of the side surface of the diaphragm 20 where the piezoelectric element 10 is easily deformed, In the case where the diaphragm 20 is vibrating, when the diaphragm 20 is bent upward or downward, the side surface of the diaphragm 20 on the side opposite to the side where the notch 21 is provided. It means a portion that overlaps with the side surface of the cutout portion 21. Specifically, in the first embodiment, as shown in FIGS. 2A and 2B, when the diaphragm 20 is bent downward in a convex shape, among the side surfaces on the plane side of the diaphragm 20 The piezoelectric element 10 is disposed on the bottom surface of the notch 21, the left wall surface of the notch 21, and the portion overlapping the right wall surface of the notch 21. Alternatively, the piezoelectric element 10 is not limited to this. For example, the piezoelectric element 10 is placed on the bottom surface of the cutout portion 21, the left wall surface of the cutout portion 21, or the portion overlapping the right wall surface of the cutout portion 21 of the side surface on the plane side of the diaphragm 20. It may be arranged.
(振動力発電装置の機能)
このように構成された振動力発電装置1の機能は以下の通りである。まず、振動力発電装置1を遮音壁の吸音部に適用した場合には、道路を車両が走行すること等によって生じる騒音の音エネルギーによって振動板20を振動変形させ、この振動板20の変形により圧電素子10を変形させて、発電を行うことが可能になる。このように、騒音を吸収することに加えて、発電を行うことができるので、この発電を任意の目的で利用(例えば、道路照明や道路標識の電源として利用)することが可能になる。
(Function of vibration power generator)
The function of the vibration power generation apparatus 1 configured as described above is as follows. First, when the vibration power generation device 1 is applied to the sound absorbing portion of the sound insulation wall, the vibration plate 20 is vibrated and deformed by sound energy of noise generated by a vehicle traveling on the road, and the piezoelectric material is deformed by the deformation of the vibration plate 20. The element 10 can be deformed to generate power. As described above, since power generation can be performed in addition to absorbing noise, this power generation can be used for any purpose (for example, used as a power source for road lighting or road signs).
特に、図2(b)、(c)に示すように、圧電素子10は、振動板20の平面側の側面のうち切欠部21と対応する部分に配置されているので、当該切欠部21が設けられていない構造に比べて、圧電素子10の変形を促進させることができる。   In particular, as shown in FIGS. 2B and 2C, the piezoelectric element 10 is disposed at a portion corresponding to the notch 21 on the side surface on the plane side of the diaphragm 20. The deformation of the piezoelectric element 10 can be promoted as compared with a structure that is not provided.
(効果)
このように実施の形態1によれば、圧電素子10を、振動板20の平面側の側面のうち切欠部21と対応する部分に配置しているので、当該切欠部21が設けられていない構造に比べて、圧電素子10の変形を促進させることができ、圧電素子10の発電効率を向上させることができる。
(effect)
As described above, according to the first embodiment, the piezoelectric element 10 is disposed in a portion corresponding to the notch 21 in the side surface on the plane side of the diaphragm 20, and thus the structure in which the notch 21 is not provided. As compared with the above, the deformation of the piezoelectric element 10 can be promoted, and the power generation efficiency of the piezoelectric element 10 can be improved.
〔実施の形態2〕
次に、実施の形態2について説明する。この形態は、切欠部の側面の少なくとも一部に、段差部を設けた形態である。なお、実施の形態1と略同様の構成要素については、必要に応じて、実施の形態1で用いたのと同一の符号又は名称を付してその説明を省略する。
[Embodiment 2]
Next, a second embodiment will be described. This form is a form in which a step portion is provided on at least a part of the side surface of the cutout portion. In addition, about the component similar to Embodiment 1, the same code | symbol or name as used in Embodiment 1 is attached | subjected as needed, and the description is abbreviate | omitted.
(構成)
まず、実施の形態2に係る振動力発電装置の構成について説明する。図3は実施の形態2に係る振動力発電装置のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。これら各図に示すように、実施の形態2に係る振動力発電装置101は、実施の形態1の振動力発電装置1の構成要素に対して、さらに段差部22を加えて構成されている。
(Constitution)
First, the configuration of the vibration power generator according to Embodiment 2 will be described. 3 is a cross-sectional view of the vibration power generator according to the second embodiment taken along the line AA, where (a) is a state before the vibration power generator is subjected to external force, and (b) is a road where the vibration power generator is road. (C) is a figure which shows the state which received the external force along the direction which goes to the outside from the inner side of a road, and (c) the vibration power generation device received the direction which goes to the inner side from the outer side of the road. As shown in these drawings, the vibration power generation apparatus 101 according to the second embodiment is configured by further adding a step portion 22 to the components of the vibration power generation apparatus 1 of the first embodiment.
段差部22は、圧電素子10の変形を局部的に調整するための局部変形調整手段である。この段差部22は、振動板20と同一の材質にて矩形状に形成されている(あるいは、波形状等にて形成されてもよい)。また、図3(a)に示すように、この段差部22は、切欠部21の底面に設けられている(なお、この段差部22は、当該底面におけるZ方向の一方の端部から他方の端部にわたって設けられている)。   The step portion 22 is a local deformation adjusting means for locally adjusting the deformation of the piezoelectric element 10. The step portion 22 is formed in a rectangular shape with the same material as the diaphragm 20 (or may be formed in a wave shape or the like). Further, as shown in FIG. 3A, the stepped portion 22 is provided on the bottom surface of the notch portion 21 (note that the stepped portion 22 extends from one end of the bottom surface in the Z direction to the other end. Provided over the end).
ここで、この段差部22の構成については、振動力発電装置101の製造性を向上させることができる構成が好ましく、具体的には、実施の形態2では、図3(a)、(b)に示すように、段差部22は、振動板20と一体成形されている。あるいは、これに限られず、設置状況に応じて段差部22の数や配置等を任意に変更できるように、例えば、段差部22は、振動板20とは別体に形成されてもよい。この場合には、段差部22は、振動板20に対して接着剤や固定具等にて接合される。
また、段差部22の形状及び個数については、具体的には、実施の形態1では、図3(a)に示すように、圧電素子10や振動板20における切欠部21と対応する部分に割れやひび等を生じにくくするために、段差部22のY方向の長さを切欠部21のY方向の長さの1/5程度で、且つ段差部22のX方向の長さを振動板20の厚さの1/4程度で形成された段差部22が、2体設けられている。なお、段差部22の厚さについては、例えば振動板20の厚さと略同一にしてもよい。
また、段差部22の段数については、具体的には、実施の形態1では、図3(a)に示すように、段差部22は単数段にて形成されている。あるいは、これに限られず、圧電素子10の変形を一層調整しやすくするために、複数段にて形成されてもよい。
Here, the configuration of the stepped portion 22 is preferably a configuration capable of improving the manufacturability of the vibration power generation apparatus 101. Specifically, in the second embodiment, FIGS. 3A and 3B are used. As shown, the step portion 22 is formed integrally with the diaphragm 20. Or it is not restricted to this, For example, the level | step-difference part 22 may be formed separately from the diaphragm 20 so that the number, arrangement | positioning, etc. of the level | step-difference part 22 can be changed arbitrarily according to an installation condition. In this case, the step portion 22 is joined to the diaphragm 20 with an adhesive, a fixture, or the like.
As for the shape and number of the stepped portions 22, specifically, in the first embodiment, as shown in FIG. 3A, the portions corresponding to the notches 21 in the piezoelectric element 10 and the diaphragm 20 are cracked. In order to prevent the occurrence of cracks and the like, the length of the stepped portion 22 in the Y direction is about 1/5 of the length of the notched portion 21 in the Y direction, and the length of the stepped portion 22 in the X direction is set to the diaphragm 20. Two step portions 22 formed with about ¼ of the thickness are provided. The thickness of the stepped portion 22 may be substantially the same as the thickness of the diaphragm 20, for example.
As for the number of steps of the stepped portion 22, specifically, in the first embodiment, the stepped portion 22 is formed in a single step as shown in FIG. Or it is not restricted to this, In order to make it easier to adjust the deformation | transformation of the piezoelectric element 10, you may form in multiple steps.
(振動力発電装置の機能)
このように構成された振動力発電装置101の機能は以下の通りである。図3(b)、(c)に示すように、切欠部21の底面に段差部22を複数設けたので、圧電素子10や振動板20における段差部22と対応する部分の剛性を向上させることができ、圧電素子10や振動板20における切欠部21と対応する部分に割れやひび等を生じにくくすることができる。
(Function of vibration power generator)
The function of the vibration power generation apparatus 101 configured as described above is as follows. As shown in FIGS. 3B and 3C, since the plurality of step portions 22 are provided on the bottom surface of the notch portion 21, the rigidity of the portion corresponding to the step portion 22 in the piezoelectric element 10 or the diaphragm 20 is improved. It is possible to prevent cracks, cracks, and the like from occurring in portions corresponding to the notches 21 in the piezoelectric element 10 and the diaphragm 20.
(効果)
このように実施の形態2によれば、切欠部21の底面に段差部22を設けたので、切欠部の側面の少なくとも一部に、段差部を設けたので、圧電素子10や振動板20における切欠部21が設けられている部分に割れやひび等を生じにくくすることができ、圧電素子10や振動板20における一定の耐久性を確保しながら、圧電素子10の発電効率を向上させることができる。
(effect)
As described above, according to the second embodiment, since the step portion 22 is provided on the bottom surface of the notch portion 21, the step portion is provided on at least a part of the side surface of the notch portion. It is possible to prevent cracks, cracks, and the like from occurring in the portion where the notch 21 is provided, and to improve the power generation efficiency of the piezoelectric element 10 while ensuring a certain durability in the piezoelectric element 10 and the diaphragm 20. it can.
また、段差部22と、振動板20とを相互に一体成形したので、段差部22に振動板20を取り付ける手間を省くことができ、振動力発電装置101の製造性を向上させることができる。   In addition, since the step portion 22 and the diaphragm 20 are integrally formed with each other, the trouble of attaching the diaphragm 20 to the step portion 22 can be saved, and the manufacturability of the vibration power generator 101 can be improved.
〔実施の形態3〕
次に、実施の形態3について説明する。この形態は、振動板に、変形調整手段が設けられた形態である。なお、実施の形態3と略同様の構成要素については、必要に応じて、実施の形態1で用いたのと同一の符号又は名称を付してその説明を省略する。
[Embodiment 3]
Next, Embodiment 3 will be described. In this form, a deformation adjusting means is provided on the diaphragm. In addition, about the component similar to Embodiment 3, the same code | symbol or name as used in Embodiment 1 is attached | subjected as needed, and the description is abbreviate | omitted.
(構成)
まず、実施の形態3に係る振動力発電装置の構成について説明する。図4は実施の形態3に係る振動力発電装置のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。これら各図に示すように、実施の形態3に係る振動力発電装置201は、実施の形態1の振動力発電装置1の構成要素に対して、さらに変形調整部23a、23bを加えて構成されている。
(Constitution)
First, the configuration of the vibration power generator according to Embodiment 3 will be described. 4A and 4B are cross-sectional views of the vibration power generation device according to the third embodiment, taken along the line AA. FIG. 4A is a state before the vibration power generation device receives an external force, and FIG. (C) is a figure which shows the state which received the external force along the direction which goes to the outside from the inner side of a road, and (c) the vibration power generation device received the direction which goes to the inner side from the outer side of the road. As shown in these drawings, the vibration power generation device 201 according to the third embodiment is configured by further adding deformation adjusting units 23a and 23b to the components of the vibration power generation device 1 of the first embodiment. ing.
変形調整部23a、23bは、圧電素子10の変形が所定量に達した場合に当該圧電素子10の変形を調整する変形調整手段である。図4(a)に示すように、変形調整部23aは切欠部21の左側壁面に設けられ、変形調整部23bは切欠部21の右側壁面に設けられている。   The deformation adjusting units 23a and 23b are deformation adjusting means for adjusting the deformation of the piezoelectric element 10 when the deformation of the piezoelectric element 10 reaches a predetermined amount. As shown in FIG. 4A, the deformation adjusting portion 23 a is provided on the left wall surface of the notch portion 21, and the deformation adjusting portion 23 b is provided on the right wall surface of the notch portion 21.
ここで、変形調整部23a、23bの構成については、振動力発電装置201の製造性を向上させることができる構成が好ましく、具体的には、実施の形態3では、図4(a)に示すように、変形調整部23aは切欠部21の左側壁面と一体成形され、変形調整部23bは切欠部21の右側壁面と一体成形されている。あるいは、これに限られず、変形調整部23a、23bは、振動板20とは別体にて形成されてもよい。
また、変形調整部23a、23bの配置については、具体的には、実施の形態3では、図4(a)に示すように、変形調整部23aは切欠部21の左側壁面の下方に配置されていると共に、変形調整部23bは切欠部21の右側壁面の下方に配置されている。そして、図4(a)、(c)に示すように、圧電素子10の引張変形が所定量に達した場合に変形調整部23a、23bが相互に当接するように、変形調整部23a、23bは対向する位置に配置されている。
Here, the configuration of the deformation adjusting units 23a and 23b is preferably a configuration capable of improving the manufacturability of the vibration power generation apparatus 201. Specifically, in the third embodiment, the configuration shown in FIG. As described above, the deformation adjusting portion 23 a is integrally formed with the left wall surface of the notch portion 21, and the deformation adjusting portion 23 b is integrally formed with the right wall surface of the notch portion 21. Or it is not restricted to this, The deformation | transformation adjustment parts 23a and 23b may be formed separately from the diaphragm 20. As shown in FIG.
As for the arrangement of the deformation adjusting portions 23a and 23b, specifically, in the third embodiment, as shown in FIG. 4A, the deformation adjusting portion 23a is arranged below the left wall surface of the notch portion 21. In addition, the deformation adjusting portion 23 b is disposed below the right wall surface of the notch portion 21. Then, as shown in FIGS. 4A and 4C, when the tensile deformation of the piezoelectric element 10 reaches a predetermined amount, the deformation adjustment portions 23a and 23b are brought into contact with each other so that the deformation adjustment portions 23a and 23b come into contact with each other. Are arranged at opposite positions.
(振動力発電装置の機能)
このように構成された振動力発電装置201の機能は以下の通りである。図4(b)、(c)に示すように、振動力発電装置201においては、切欠部21の左側壁面に変形調整部23aが形成され、切欠部21の右側壁面に変形調整部23bが形成されているので、圧電素子10の引張変形が所定量に達した場合にのみ、変形調整部23a、23bが相互に当接される。これにより、圧電素子10の圧縮変形を自由に許しながら、圧電素子10の過度な引張変形を抑制することができる。
(Function of vibration power generator)
The function of the vibration power generation apparatus 201 configured as described above is as follows. As shown in FIGS. 4B and 4C, in the vibration power generation apparatus 201, the deformation adjustment portion 23 a is formed on the left wall surface of the cutout portion 21, and the deformation adjustment portion 23 b is formed on the right wall surface of the cutout portion 21. Therefore, only when the tensile deformation of the piezoelectric element 10 reaches a predetermined amount, the deformation adjusting portions 23a and 23b are brought into contact with each other. Accordingly, excessive tensile deformation of the piezoelectric element 10 can be suppressed while allowing compression deformation of the piezoelectric element 10 freely.
(効果)
このように実施の形態3によれば、切欠部21の左側壁面に変形調整部23aを設け、切欠部21の右側壁面に変形調整部23bを設けたので、圧電素子10の過度な引張変形を抑制することができ、当該引張変形による圧電素子10の割れ等を防止することができる。
(effect)
As described above, according to the third embodiment, since the deformation adjusting portion 23a is provided on the left wall surface of the notch portion 21 and the deformation adjusting portion 23b is provided on the right wall surface of the notch portion 21, excessive tensile deformation of the piezoelectric element 10 is caused. It can suppress, and the crack of the piezoelectric element 10 by the said tensile deformation, etc. can be prevented.
〔実施の形態4〕
次に、実施の形態4について説明する。この形態は、振動板20の少なくとも一方の側面に略切断隙間のない切欠部を形成した形態である。なお、実施の形態4と略同様の構成要素については、必要に応じて、実施の形態1で用いたのと同一の符号又は名称を付してその説明を省略する。
[Embodiment 4]
Next, a fourth embodiment will be described. This form is a form in which a notch having substantially no cutting gap is formed on at least one side surface of the diaphragm 20. In addition, about the component substantially the same as Embodiment 4, the same code | symbol or name as used in Embodiment 1 is attached | subjected as needed, and the description is abbreviate | omitted.
(構成)
まず、実施の形態4に係る振動力発電装置の構成について説明する。図5は実施の形態4に係る振動力発電装置のA−A矢視断面図であり、(a)は振動力発電装置が外力を受ける前の状態、(b)は振動力発電装置が道路の内側から外側へ向かう方向に沿って外力を受けた状態、(c)は振動力発電装置が道路の外側から内側へ向かう方向に沿って外力を受けた状態を示す図である。これら各図に示すように、実施の形態4に係る振動力発電装置301は、実施の形態1の振動力発電装置1の構成要素と同一の構成要素にて構成されている。
(Constitution)
First, the configuration of the vibration power generator according to Embodiment 4 will be described. 5A and 5B are cross-sectional views of the vibration power generation device according to the fourth embodiment, taken along line AA, where FIG. 5A is a state before the vibration power generation device receives an external force, and FIG. (C) is a figure which shows the state which received the external force along the direction which goes to the outside from the inner side of a road, and (c) the vibration power generation device received the direction which goes to the inner side from the outer side of the road. As shown in these drawings, the vibration power generation apparatus 301 according to the fourth embodiment is configured by the same components as those of the vibration power generation apparatus 1 of the first embodiment.
ここで、図5(a)に示すように、振動板20の底面側の側面に、略切断隙間のない切欠部21が形成されている(なお、この切欠部21は、振動板20におけるZ方向の一方の端部から他方の端部にわたって形成されている)。この切欠部21は、振動板20の底面側の側面に直交するように略直線状にて形成されており、振動板20の底面側の側面におけるY方向中央に配置されている。   Here, as shown in FIG. 5A, a notch 21 having substantially no cutting gap is formed on the side surface on the bottom surface side of the diaphragm 20 (the notch 21 is the Z in the diaphragm 20). Formed from one end of the direction to the other end). The notch 21 is formed in a substantially straight line so as to be orthogonal to the side surface on the bottom surface side of the diaphragm 20, and is arranged at the center in the Y direction on the side surface on the bottom surface side of the diaphragm 20.
(振動力発電装置の機能)
このように構成された振動力発電装置301の機能は以下の通りである。図5(b)、(c)に示すように、振動力発電装置301においては、振動板20の底面側の側面に、略切断隙間のない切欠部21が設けられているので、圧電素子10が上方へ凸状に撓もうとすると、切欠部21の左側壁面と右側壁面とが相互に当接される。これにより、圧電素子10の圧縮変形を自由に許しながら、圧電素子10の過剰な引張変形を抑制することができる。
(Function of vibration power generator)
The function of the vibration power generation device 301 configured as described above is as follows. As shown in FIGS. 5B and 5C, in the vibration power generation apparatus 301, the piezoelectric element 10 is provided with a notch 21 having substantially no cutting gap on the side surface on the bottom surface side of the diaphragm 20. If it tries to bend upward in a convex shape, the left wall surface and the right wall surface of the notch 21 are brought into contact with each other. Accordingly, excessive tensile deformation of the piezoelectric element 10 can be suppressed while allowing compression deformation of the piezoelectric element 10 freely.
(効果)
このように実施の形態4によれば、振動板20の底面側の側面に、略切断隙間のない切欠部21が設けられているので、圧電素子10の過度な引張変形を抑制することができ、当該引張変形による圧電素子10の割れ等を防止することができる。
(effect)
As described above, according to the fourth embodiment, since the notch 21 having substantially no cutting gap is provided on the side surface on the bottom surface side of the diaphragm 20, excessive tensile deformation of the piezoelectric element 10 can be suppressed. The cracking of the piezoelectric element 10 due to the tensile deformation can be prevented.
〔実施の形態に対する変形例〕
以上、本発明に係る実施の形態について説明したが、本発明の具体的な構成及び手段は、特許請求の範囲に記載した各発明の技術的思想の範囲内において、任意に改変及び改良することができる。以下、このような変形例について説明する。
[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.
(解決しようとする課題や発明の効果について)
まず、発明が解決しようとする課題や発明の効果は、前記した内容に限定されるものではなく、本発明によって、前記に記載されていない課題を解決したり、前記に記載されていない効果を奏することもでき、また、記載されている課題の一部のみを解決したり、記載されている効果の一部のみを奏することがある。
(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.
(各実施の形態の組み合わせ)
各実施の形態に示した構成は、相互に組み合わせることができる。例えば、道路用遮音壁の吸音部に、実施の形態1における振動力発電装置1、実施の形態2における振動力発電装置101、実施の形態3における振動力発電装置201、又は実施の形態4における振動力発電装置301を組み合わせたものを適用してもよい。
また、例えば、実施の形態2における振動力発電装置101と実施の形態3における振動力発電装置201の変形調整部23a、23bとを組み合わせてもよい。あるいは、実施の形態4における振動力発電装置301と実施の形態2における振動力発電装置101の段差部22とを組み合わせてもよい。この場合には、例えば、振動力発電装置301の切欠部21は、振動板20の底面側の側面に直交するように略鋸歯状にて形成されてもよい。
(Combination of each embodiment)
The structures shown in the embodiments can be combined with each other. For example, the vibration power generation device 1 in the first embodiment, the vibration power generation device 101 in the second embodiment, the vibration power generation device 201 in the third embodiment, or the vibration in the fourth embodiment is applied to the sound absorbing portion of the road noise barrier. A combination of the power generation devices 301 may be applied.
Further, for example, the vibration power generation apparatus 101 in the second embodiment and the deformation adjustment units 23a and 23b of the vibration power generation apparatus 201 in the third embodiment may be combined. Alternatively, the vibration power generation device 301 in the fourth embodiment and the step portion 22 of the vibration power generation device 101 in the second embodiment may be combined. In this case, for example, the cutout portion 21 of the vibration power generation device 301 may be formed in a substantially sawtooth shape so as to be orthogonal to the side surface on the bottom surface side of the diaphragm 20.
(圧電素子について)
各実施の形態では、振動力発電装置1に設けられている圧電素子10は、同一の薄角板状及び厚さにて形成されていると説明したが、これに限られず、例えば同一形状及び厚さを有する方形状(例えば三角形、五角形等)、扇状、円形状等にて形成されてもよい。あるいは、異なる形状及び厚さを有する方形状等にて形成されてもよい。
(About piezoelectric elements)
In each embodiment, it has been described that the piezoelectric element 10 provided in the vibration power generation device 1 is formed with the same thin plate shape and thickness, but is not limited thereto, for example, the same shape and It may be formed in a rectangular shape having a thickness (for example, a triangle, a pentagon, etc.), a fan shape, a circular shape, or the like. Or you may form in the square shape etc. which have a different shape and thickness.
また、各実施の形態では、1枚の振動板20に対して1枚の圧電素子10が設けられていると説明したが、例えば、1枚の振動板20に対して複数枚の圧電素子10が設けられてもよい。この場合には、例えば、各圧電素子20に対応する切欠部21が、振動板20の側面に複数形成されてもよい。   In each embodiment, it has been described that one piezoelectric element 10 is provided for one vibration plate 20. For example, a plurality of piezoelectric elements 10 are provided for one vibration plate 20. May be provided. In this case, for example, a plurality of cutout portions 21 corresponding to the respective piezoelectric elements 20 may be formed on the side surface of the diaphragm 20.
(振動板について)
各実施の形態では、振動板20は、同一の角板状、かつ同一の板面積及び厚さにて形成されていると説明したが、これに限られず、例えば同一形状及び厚さを有する方形状(例えば三角形、五角形等)、扇状、円形状等にて形成されてもよい。あるいは、異なる形状及び厚さを有する方形状等にて形成されてもよい。
(About the diaphragm)
In each embodiment, it has been described that the diaphragm 20 is formed with the same square plate shape and the same plate area and thickness. However, the present invention is not limited to this. For example, the diaphragm 20 has the same shape and thickness. You may form in shape (for example, a triangle, a pentagon, etc.), fan shape, circular shape, etc. Or you may form in the square shape etc. which have a different shape and thickness.
また、各実施の形態では、振動板20の形状を、圧電素子10の形状よりも大きくしていると説明したが、例えば、振動板20の形状を、圧電素子10の形状と同一又はそれよりも小さくてもよい(より具体的には、振動板20のY方向の長さが圧電素子10のY方向の長さと同一又はそれよりも小さくてもよい)。また、振動板20の厚さを、圧電素子10の厚さよりも厚くしていると説明したが、例えば、振動板20の厚さを、圧電素子10の厚さと同一又はそれより薄くてもよい。   In each embodiment, it has been described that the shape of the diaphragm 20 is larger than the shape of the piezoelectric element 10. For example, the shape of the diaphragm 20 is the same as or more than the shape of the piezoelectric element 10. (More specifically, the length of the diaphragm 20 in the Y direction may be the same as or smaller than the length of the piezoelectric element 10 in the Y direction). In addition, although it has been described that the thickness of the diaphragm 20 is greater than the thickness of the piezoelectric element 10, for example, the thickness of the diaphragm 20 may be the same as or thinner than the thickness of the piezoelectric element 10. .
また、各実施の形態では、振動板20の枚数を一枚として説明したが、例えば複数枚の振動板20を組み合わせたものであってもよい。   In each embodiment, the number of diaphragms 20 is described as one. However, for example, a combination of a plurality of diaphragms 20 may be used.
(段差部について)
実施の形態2では、段差部22は、切欠部21の底面に設けられていると説明したが、これに限られない。例えば、段差部22は、切欠部21の右側壁面、又は左側壁面に設けられてもよい。あるいは、段差部22は、切欠部21の底面と、切欠部21の右側壁面と、左側壁面とに設けられてもよい。
(About steps)
In the second embodiment, it has been described that the stepped portion 22 is provided on the bottom surface of the cutout portion 21, but is not limited thereto. For example, the step portion 22 may be provided on the right wall surface or the left wall surface of the notch portion 21. Or the level | step-difference part 22 may be provided in the bottom face of the notch part 21, the right side wall surface of the notch part 21, and the left side wall surface.
また、実施の形態2では、切欠部21の底面に2体の段差部22が設けられていると説明したが、例えば、1体の段差部22が設けられてもよく、又は、2体以上の段差部が設けられてもよい。   Further, in the second embodiment, it has been described that the two stepped portions 22 are provided on the bottom surface of the cutout portion 21, but, for example, one stepped portion 22 may be provided, or two or more stepped portions 22 may be provided. Step portions may be provided.
また、実施の形態3では、切欠部21の左側壁面に変形調整部23aを設け、切欠部21の右側壁面に変形調整部23bを設けることで、圧電素子10の変形を調整すると説明したが、これに限られず、例えば、実施の形態2の段差部22の相互間の間隔を調整することにより、圧電素子10の変形を調整してもよい。   In the third embodiment, the deformation adjusting portion 23a is provided on the left wall surface of the notch 21 and the deformation adjusting portion 23b is provided on the right wall surface of the notch 21 to adjust the deformation of the piezoelectric element 10. For example, the deformation of the piezoelectric element 10 may be adjusted by adjusting the interval between the stepped portions 22 of the second embodiment.
1、101、201、301 振動力発電装置
10 圧電素子
20 振動板
21 切欠部
22 段差部
23a、23b 変形調整部
DESCRIPTION OF SYMBOLS 1, 101, 201, 301 Vibration power generation apparatus 10 Piezoelectric element 20 Diaphragm 21 Notch part 22 Step part 23a, 23b Deformation adjustment part

Claims (3)

  1. 振動による圧力変動により発電する振動力発電装置であって、
    圧電素子と、
    前記圧電素子に振動を伝える振動板と、を備え、
    前記振動板の少なくとも一方の側面に切欠部を形成し、
    前記圧電素子を、前記振動板における前記切欠部が設けられている側面とは反対側の側面のうち当該切欠部と対応する部分に配置し、
    前記切欠部の側面の少なくとも一部に、段差部を設けた、
    振動力発電装置。
    A vibration power generator that generates power by pressure fluctuation caused by vibration,
    A piezoelectric element;
    A vibration plate for transmitting vibration to the piezoelectric element;
    Forming a notch on at least one side of the diaphragm;
    The piezoelectric element is disposed in a portion corresponding to the notch portion of the side surface of the diaphragm opposite to the side surface on which the notch portion is provided ,
    A step portion is provided on at least a part of the side surface of the notch,
    Vibration power generator.
  2. 前記段差部と、前記振動板とを相互に一体成形した、
    請求項1に記載の振動力発電装置。
    The step portion and the diaphragm are integrally molded with each other,
    The vibration power generation device according to claim 1.
  3. 前記振動板に、前記圧電素子の変形が所定量に達した場合に当該圧電素子の変形を調整する変形調整手段を設けた、
    請求項1又は2に記載の振動力発電装置。
    The vibration plate is provided with a deformation adjusting means for adjusting the deformation of the piezoelectric element when the deformation of the piezoelectric element reaches a predetermined amount.
    The vibration power generation device according to claim 1 or 2 .
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JP6232337B2 (en) * 2014-04-30 2017-11-15 住友理工株式会社 Magnetostrictive vibration power generator
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JPH01119200A (en) * 1987-09-25 1989-05-11 Siemens Ag Ultrasonic converter
WO1992012543A1 (en) * 1991-01-11 1992-07-23 Pcb Piezotronics, Inc. Flexure-type piezoelectric transducer
WO2010018883A1 (en) * 2008-08-14 2010-02-18 Myungjoo Kwon Magnetic-piezoelectric combine sensor using piezoelectric single crystal
JP2010154746A (en) * 2010-03-26 2010-07-08 Kohei Hayamizu Generator
WO2011132636A1 (en) * 2010-04-21 2011-10-27 パナソニック電工株式会社 Ferroelectric device

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Publication number Priority date Publication date Assignee Title
JPH01119200A (en) * 1987-09-25 1989-05-11 Siemens Ag Ultrasonic converter
WO1992012543A1 (en) * 1991-01-11 1992-07-23 Pcb Piezotronics, Inc. Flexure-type piezoelectric transducer
WO2010018883A1 (en) * 2008-08-14 2010-02-18 Myungjoo Kwon Magnetic-piezoelectric combine sensor using piezoelectric single crystal
JP2010154746A (en) * 2010-03-26 2010-07-08 Kohei Hayamizu Generator
WO2011132636A1 (en) * 2010-04-21 2011-10-27 パナソニック電工株式会社 Ferroelectric device

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