JP7099913B2 - Bell - Google Patents

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JP7099913B2
JP7099913B2 JP2018165220A JP2018165220A JP7099913B2 JP 7099913 B2 JP7099913 B2 JP 7099913B2 JP 2018165220 A JP2018165220 A JP 2018165220A JP 2018165220 A JP2018165220 A JP 2018165220A JP 7099913 B2 JP7099913 B2 JP 7099913B2
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vibrating member
housing
bell
piezoelectric element
vibrating
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JP2020038286A (en
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高広 梅村
伸二 小林
誠士郎 鈴木
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サクサ株式会社
サクサプレシジョン株式会社
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Description

本発明は、鳴動音を発するベルに関する。 The present invention relates to a bell that emits a ringing sound.

従来、モーターによる駆動力でハンマー部材を金属筐体に衝突させることにより鳴動するモーターベルが知られている（例えば、特許文献１を参照）。 Conventionally, a motor bell that rings when a hammer member collides with a metal housing by a driving force of a motor is known (see, for example, Patent Document 1).

特開昭５２－１３３７７７号公報Japanese Unexamined Patent Publication No. 52-133777

ベルの中には、停電が発生しても鳴動するように、バッテリー（例えば無停電電源）から供給される電力によって作動するものがある。このような場合、バッテリーの容量を低減するために、ベルの消費電力を低減させることが望ましい。ところが、モーターベルは消費電力が大きいという問題があった。 Some bells are powered by power supplied by a battery (eg, an uninterruptible power supply) so that they ring in the event of a power outage. In such cases, it is desirable to reduce the power consumption of the bell in order to reduce the capacity of the battery. However, the motor bell has a problem of high power consumption.

そこで、本発明はこれらの点に鑑みてなされたものであり、ベルの消費電力を低減させることを目的とする。 Therefore, the present invention has been made in view of these points, and an object thereof is to reduce the power consumption of the bell.

本発明のベルは、筐体と、前記筐体に固定された軸受部材と、前記軸受部材から第１方向に延伸する第１振動部材と、前記第１振動部材の前記軸受部材側と反対側の端部から、前記第１方向と異なる第２方向に延伸する第２振動部材と、前記第１振動部材に設けられた圧電素子と、前記第２振動部材の前記第１振動部材側と反対側の端部に設けられており、前記圧電素子の変形に伴って前記第１振動部材及び前記第２振動部材に生じる振動に応じて前記筐体への衝突を繰り返すハンマー部と、を有する。前記第２振動部材の長さは、例えば前記第１振動部材の長さよりも大きい。 The bell of the present invention has a housing, a bearing member fixed to the housing, a first vibrating member extending in a first direction from the bearing member, and a side of the first vibrating member opposite to the bearing member side. A second vibrating member extending in a second direction different from the first direction, a piezoelectric element provided in the first vibrating member, and opposite to the first vibrating member side of the second vibrating member. It is provided at the end on the side, and has a hammer portion that repeatedly collides with the housing in response to the vibration generated in the first vibrating member and the second vibrating member due to the deformation of the piezoelectric element. The length of the second vibrating member is, for example, larger than the length of the first vibrating member.

前記圧電素子は、前記第１振動部材において相対的に可撓性が大きい領域に設けられていてもよい。また、前記圧電素子は、前記第１振動部材の中心よりも前記第２振動部材に近い領域に設けられていてもよい。 The piezoelectric element may be provided in a region of the first vibrating member having a relatively large flexibility. Further, the piezoelectric element may be provided in a region closer to the second vibrating member than the center of the first vibrating member.

前記ベルは、前記ハンマー部に対して前記筐体と反対側に設けられた壁部をさらに有し、前記ハンマー部は、前記第２振動部材が変位していない状態において前記筐体及び前記壁部に接触せず、前記第２振動部材が変位して振動している状態において前記筐体及び前記壁部に順次接触してもよい。 The bell further has a wall portion provided on the opposite side of the housing to the hammer portion, and the hammer portion includes the housing and the wall in a state where the second vibrating member is not displaced. The housing and the wall portion may be sequentially contacted in a state where the second vibrating member is displaced and vibrates without contacting the portion.

本発明によれば、ベルの消費電力を低減させることができるという効果を奏する。 According to the present invention, there is an effect that the power consumption of the bell can be reduced.

本実施形態のベルの内部構造を示す斜視図である。It is a perspective view which shows the internal structure of the bell of this embodiment. ベルの内部構造を正面から視認した状態を示す模式図である。It is a schematic diagram which shows the state which the internal structure of a bell is visually recognized from the front. 圧電素子が設けられる位置について説明するための図である。It is a figure for demonstrating the position where a piezoelectric element is provided. 圧電素子が第１振動部材において相対的に可撓性が大きい領域に設けられている構成例を示す図である。It is a figure which shows the structural example in which the piezoelectric element is provided in the region where the flexibility is relatively large in the 1st vibration member. 圧電素子が第１振動部材において相対的に可撓性が大きい領域に設けられている構成例を示す図である。It is a figure which shows the structural example in which the piezoelectric element is provided in the region where the flexibility is relatively large in the 1st vibration member. 圧電素子が第１振動部材において相対的に可撓性が大きい領域に設けられている構成例を示す図である。It is a figure which shows the structural example in which the piezoelectric element is provided in the region where the flexibility is relatively large in the 1st vibration member. 第１変形例に係るベルの構成を示す図である。It is a figure which shows the structure of the bell which concerns on the 1st modification. 第２変形例に係るベルの構成を示す図である。It is a figure which shows the structure of the bell which concerns on the 2nd modification.

［ベル１の概要］
図１は、本実施形態のベル１の内部構造を示す斜視図である。図２は、ベル１の内部構造を正面から視認した状態を示す模式図である。ベル１は、筐体（ゴング）１１と、軸受部材１２と、第１振動部材１３と、第２振動部材１４と、圧電素子１５と、ハンマー部１６と、給電部１７とを有する。図１には示していないが、ベル１は、軸受部材１２、第１振動部材１３、第２振動部材１４及び圧電素子１５に外部から触れることができないようにするためのカバーをさらに有する。図２（ｂ）は、図２（ａ）における圧電素子１５の周辺部を拡大した図である。 [Overview of Bell 1]
FIG. 1 is a perspective view showing the internal structure of the bell 1 of the present embodiment. FIG. 2 is a schematic view showing a state in which the internal structure of the bell 1 is visually recognized from the front. The bell 1 has a housing (gong) 11, a bearing member 12, a first vibrating member 13, a second vibrating member 14, a piezoelectric element 15, a hammer portion 16, and a feeding portion 17. Although not shown in FIG. 1, the bell 1 further has a cover for preventing the bearing member 12, the first vibrating member 13, the second vibrating member 14, and the piezoelectric element 15 from being touched from the outside. FIG. 2B is an enlarged view of the peripheral portion of the piezoelectric element 15 in FIG. 2A.

筐体１１は、ハンマー部１６が衝突することにより音を発する部材である。筐体１１の材質及び形状は、音を発する限りにおいて任意であるが、例えば金属製のお椀形状である。図１に示す筐体１１は、図１のＺの向きに凹んでいる。 The housing 11 is a member that emits a sound when the hammer portion 16 collides with the housing 11. The material and shape of the housing 11 are arbitrary as long as they emit sound, but are, for example, a metal bowl shape. The housing 11 shown in FIG. 1 is recessed in the direction of Z in FIG.

軸受部材１２は、第１振動部材１３の一端を固定するための部材である。軸受部材１２は、例えばネジＳにより筐体に固定されている。図１に示す例における破線の内側は平坦面であり、軸受部材１２は、当該平坦面に固定されている。軸受部材１２は、例えば金属により形成されているが、軸受部材１２の材質は任意である。軸受部材１２と第１振動部材１３とは溶接されていてもよく、ネジ等の結合部材で結合されていてもよく、一体の金属から成形されていてもよい。 The bearing member 12 is a member for fixing one end of the first vibrating member 13. The bearing member 12 is fixed to the housing by, for example, a screw S. The inside of the broken line in the example shown in FIG. 1 is a flat surface, and the bearing member 12 is fixed to the flat surface. The bearing member 12 is made of, for example, metal, but the material of the bearing member 12 is arbitrary. The bearing member 12 and the first vibration member 13 may be welded, may be coupled by a coupling member such as a screw, or may be formed from an integral metal.

第１振動部材１３は、軸受部材１２から第１方向（例えば図２におけるＸ方向）に延伸する部材である。第１振動部材１３は、可撓性を有しており、外力が加わっていない状態で平坦（すなわち長手方向の輪郭線が直線状）になっており、外力が加わることにより、第１方向と直交する方向（例えば図２におけるＹ方向）に変形する板状部材である。第１振動部材１３は、例えば金属により形成されている。 The first vibrating member 13 is a member extending from the bearing member 12 in the first direction (for example, the X direction in FIG. 2). The first vibrating member 13 has flexibility and is flat (that is, the contour line in the longitudinal direction is straight) in a state where no external force is applied. It is a plate-shaped member that deforms in an orthogonal direction (for example, the Y direction in FIG. 2). The first vibrating member 13 is made of, for example, metal.

第２振動部材１４は、第１振動部材１３の軸受部材１２の側と反対側の端部から、第１方向と異なる第２方向に延伸する部材である。図２に示す例における第２方向はＹ方向であるが、第２方向はＹ方向に限らない。第２振動部材１４は、可撓性を有しており、外力が加わっていない状態で平坦であり、外力が加わることにより、第２方向と直交する方向（図２におけるＸ方向）に変形する板状部材である。第２振動部材１４は、例えば金属により形成されているが、第２振動部材１４の材質は任意である。 The second vibrating member 14 is a member that extends from the end portion of the first vibrating member 13 on the side opposite to the bearing member 12 side in a second direction different from the first direction. In the example shown in FIG. 2, the second direction is the Y direction, but the second direction is not limited to the Y direction. The second vibrating member 14 has flexibility, is flat in a state where no external force is applied, and is deformed in a direction orthogonal to the second direction (X direction in FIG. 2) when an external force is applied. It is a plate-shaped member. The second vibrating member 14 is made of, for example, metal, but the material of the second vibrating member 14 is arbitrary.

圧電素子１５は、第１振動部材１３に設けられており、給電部１７から断続的な電圧が印加されることにより断続的に変形する。圧電素子１５が断続的に変形すると、圧電素子１５の変形により生じる応力が第１振動部材１３を断続的に変形させて第１振動部材１３が振動する。第１振動部材１３が振動すると第２振動部材１４が振動し、第２振動部材１４の端部に設けられているハンマー部１６が、第２振動部材１４が変形する方向に変位することにより、ハンマー部１６が筐体１１に断続的に衝突する。 The piezoelectric element 15 is provided in the first vibrating member 13, and is intermittently deformed by an intermittent voltage applied from the feeding portion 17. When the piezoelectric element 15 is intermittently deformed, the stress generated by the deformation of the piezoelectric element 15 intermittently deforms the first vibrating member 13, and the first vibrating member 13 vibrates. When the first vibrating member 13 vibrates, the second vibrating member 14 vibrates, and the hammer portion 16 provided at the end of the second vibrating member 14 is displaced in the direction in which the second vibrating member 14 is deformed. The hammer portion 16 intermittently collides with the housing 11.

図２（ｂ）に示すように、圧電素子１５は、圧電材料１５１と、上部電極１５２と、下部電極１５３とを有する。圧電材料１５１の両側に上部電極１５２及び下部電極１５３が設けられている。上部電極１５２と下部電極１５３との間に給電部１７が電圧を印加することにより、圧電材料１５１が変形する。下部電極１５３は第１振動部材１３と電気的に導通しており、例えばグランド電位となる。 As shown in FIG. 2B, the piezoelectric element 15 has a piezoelectric material 151, an upper electrode 152, and a lower electrode 153. An upper electrode 152 and a lower electrode 153 are provided on both sides of the piezoelectric material 151. When a voltage is applied by the feeding unit 17 between the upper electrode 152 and the lower electrode 153, the piezoelectric material 151 is deformed. The lower electrode 153 is electrically conductive with the first vibrating member 13, and has, for example, a ground potential.

ハンマー部１６は、第２振動部材１４の第１振動部材１３側と反対側の端部に設けられており、圧電素子１５の変形に伴って第１振動部材１３及び第２振動部材１４に生じる振動に応じて筐体１１への衝突を繰り返す。ハンマー部１６が断続的に筐体１１に衝突することで、ベル１はベル音を放出する。第２振動部材１４の長さは、第１振動部材１３の長さよりも大きい。このように、第２振動部材１４の長さが第１振動部材１３の長さよりも大きいことで、圧電素子１５の小さな振動によりハンマー部１６を大きく振動させることができる。 The hammer portion 16 is provided at an end portion of the second vibrating member 14 opposite to the first vibrating member 13 side, and is generated in the first vibrating member 13 and the second vibrating member 14 as the piezoelectric element 15 is deformed. The collision with the housing 11 is repeated in response to the vibration. When the hammer portion 16 intermittently collides with the housing 11, the bell 1 emits a bell sound. The length of the second vibrating member 14 is larger than the length of the first vibrating member 13. As described above, since the length of the second vibrating member 14 is larger than the length of the first vibrating member 13, the hammer portion 16 can be vibrated greatly by the small vibration of the piezoelectric element 15.

図２（ａ）に示す例においては、ハンマー部１６が振動する方向が、ハンマー部１６が衝突する筐体１１の面に対して直交していないが、より大きな音を発生するために、ハンマー部１６が振動する方向が、ハンマー部１６が衝突する筐体１１の面に対して直交するように構成することが好ましい。例えば、第２振動部材１４の長さに対する筐体１１の直径を、図２（ａ）に示す例よりも大きくすることで、ハンマー部１６が振動する方向を、ハンマー部１６が衝突する筐体１１の面に対して直交する方向に近づけることができる。 In the example shown in FIG. 2A, the direction in which the hammer portion 16 vibrates is not orthogonal to the surface of the housing 11 with which the hammer portion 16 collides, but the hammer generates a louder sound. It is preferable that the direction in which the portion 16 vibrates is orthogonal to the surface of the housing 11 with which the hammer portion 16 collides. For example, by making the diameter of the housing 11 larger than the example shown in FIG. 2A with respect to the length of the second vibrating member 14, the housing in which the hammer portion 16 collides with the direction in which the hammer portion 16 vibrates. It can be approached in a direction orthogonal to the plane of 11.

給電部１７は、圧電素子１５に電圧を印加するための電気回路を有しており、基準電位となる基準端子が圧電素子１５の下部電極１５３に接続されており、印加電圧が発生する電源端子が圧電素子１５の上部電極１５２に接続されている。給電部１７は、電圧が印加される状態と電圧が印加されない状態とが連続的又は断続的に切り替わる鳴動信号を発生する。給電部１７は、例えば防災設備の制御装置（例えば受信機）から火災が発生したことを示す制御信号を受信したことに応じて、鳴動信号の発生を開始する。防災設備の制御装置が鳴動信号を発生させる場合、給電部１７は、制御装置から受信した鳴動信号をそのまま圧電素子１５の上部電極１５２および下部電極１５３に印加してもよい。 The feeding unit 17 has an electric circuit for applying a voltage to the piezoelectric element 15, and a reference terminal serving as a reference potential is connected to a lower electrode 153 of the piezoelectric element 15, and a power supply terminal for generating an applied voltage. Is connected to the upper electrode 152 of the piezoelectric element 15. The feeding unit 17 generates a ringing signal in which the state in which the voltage is applied and the state in which the voltage is not applied are continuously or intermittently switched. The power feeding unit 17 starts generating a ringing signal in response to receiving a control signal indicating that a fire has occurred, for example, from a control device (for example, a receiver) of disaster prevention equipment. When the control device of the disaster prevention equipment generates a ringing signal, the feeding unit 17 may directly apply the ringing signal received from the control device to the upper electrode 152 and the lower electrode 153 of the piezoelectric element 15.

給電部１７は、例えば防災設備が備えるバッテリーから供給される電力により、圧電素子１５に印加する電圧を発生する。給電部１７がバッテリーを有しており、給電部１７は、自身が有するバッテリーに蓄積された電力により、圧電素子１５に印加する電圧を発生してもよい。 The power feeding unit 17 generates a voltage applied to the piezoelectric element 15 by, for example, electric power supplied from a battery provided in a disaster prevention facility. The power feeding unit 17 has a battery, and the power feeding unit 17 may generate a voltage applied to the piezoelectric element 15 by the electric power stored in the battery owned by the power feeding unit 17.

［圧電素子１５が設けられる位置］
図３は、圧電素子１５が設けられる位置について説明するための図である。図３（ａ）は、軸受部材１２、第１振動部材１３、第２振動部材１４及びハンマー部１６を正面から見た状態の模式図であり、図３（ｂ）は、Ａ－Ａ線断面図である。 [Position where the piezoelectric element 15 is provided]
FIG. 3 is a diagram for explaining a position where the piezoelectric element 15 is provided. FIG. 3A is a schematic view of the bearing member 12, the first vibrating member 13, the second vibrating member 14, and the hammer portion 16 as viewed from the front, and FIG. 3B is a cross section taken along the line AA. It is a figure.

ここで、第１振動部材１３を変形させる方向に加わる応力の大きさをＰ、断面二重モーメントをＩとすると、第１振動部材１３の面と直交する方向に生じる第１振動部材１３を変形させる力（以下、変形力という）の大きさは、以下の式（１）により表される。
ｇ＝Ｐａ２（２ａ＋３ｂ）／６ＥＩ・・・（１）
式（１）におけるＥは定数である。 Here, assuming that the magnitude of the stress applied in the direction of deforming the first vibrating member 13 is P and the cross-sectional double moment is I, the first vibrating member 13 generated in the direction orthogonal to the surface of the first vibrating member 13 is deformed. The magnitude of the force to cause (hereinafter referred to as the deforming force) is expressed by the following equation (1).
g = Pa 2 (2a + 3b) / 6EI ... (1)
E in equation (1) is a constant.

図３（ｂ）に示すように、第１振動部材１３の断面の幅をｗ、高さ（すなわち第１振動部材１３の厚み）をｈとすると、断面二重モーメントは以下の式（２）により表される。
Ｉ＝ｗｈ３／２・・・（２） As shown in FIG. 3B, where w is the width of the cross section of the first vibrating member 13 and h is the height (that is, the thickness of the first vibrating member 13), the cross-sectional double moment is the following equation (2). Represented by.
I = wh 3/2 ... (2)

したがって、変形力ｇは、ａが大きいほど大きくなり、ｈが小さいほど大きくなる。そこで、圧電素子１５の少なくとも一部が、第１振動部材１３の中心よりも第２振動部材１４に近い領域に設けられていることが好ましい。圧電素子１５の少なくとも一部は、例えば第１振動部材１３における第２振動部材１４と接続された端部と、第１振動部材１３の中心位置との間に設けられている。 Therefore, the deformation force g becomes larger as a is larger, and becomes larger as h is smaller. Therefore, it is preferable that at least a part of the piezoelectric element 15 is provided in a region closer to the second vibrating member 14 than the center of the first vibrating member 13. At least a part of the piezoelectric element 15 is provided, for example, between the end portion of the first vibrating member 13 connected to the second vibrating member 14 and the center position of the first vibrating member 13.

また、圧電素子１５は、効率よく第１振動部材１３を振動させるために、第１振動部材１３において相対的に可撓性が大きい領域に設けられていることが好ましい。図４、図５及び図６は、圧電素子１５が第１振動部材１３において相対的に可撓性が大きい領域に設けられている構成例を示す図である。 Further, in order to efficiently vibrate the first vibrating member 13, the piezoelectric element 15 is preferably provided in a region of the first vibrating member 13 having a relatively large flexibility. 4, 5 and 6 are views showing a configuration example in which the piezoelectric element 15 is provided in a region of the first vibrating member 13 having a relatively large flexibility.

図４に示す第１振動部材１３は、Ｚ方向において、軸受部材１２と接続された端部よりも幅が狭い領域を有しており、圧電素子１５は、当該領域に設けられている。圧電素子１５は、例えば、第１振動部材１３において最も幅が狭い位置を含む領域に設けられている。 The first vibrating member 13 shown in FIG. 4 has a region narrower than the end portion connected to the bearing member 12 in the Z direction, and the piezoelectric element 15 is provided in the region. The piezoelectric element 15 is provided, for example, in a region including the narrowest position in the first vibrating member 13.

図５に示す第１振動部材１３は、Ｙ方向において、軸受部材１２と接続された端部よりも厚みが小さい領域を有しており、圧電素子１５は、当該領域に設けられている。圧電素子１５は、例えば、第１振動部材１３において最も厚みが小さい位置を含む領域に設けられている。 The first vibrating member 13 shown in FIG. 5 has a region having a thickness smaller than the end portion connected to the bearing member 12 in the Y direction, and the piezoelectric element 15 is provided in the region. The piezoelectric element 15 is provided, for example, in a region including the position having the smallest thickness in the first vibrating member 13.

図６に示す第１振動部材１３は、一部の領域にスリット１３１及びスリット１３２が形成されている。スリット１３１及びスリット１３２は細長い穴であり、スリット１３１及びスリット１３２が形成された領域における第１振動部材１３の実質的な幅は、軸受部材１２と接続された端部における幅よりも小さい。図６に示す圧電素子１５は、スリット１３１とスリット１３２との間の領域に設けられている。スリット１３１及びスリット１３２の外側に圧電素子が設けられていてもよい。 In the first vibrating member 13 shown in FIG. 6, a slit 131 and a slit 132 are formed in a part of the region. The slit 131 and the slit 132 are elongated holes, and the substantial width of the first vibrating member 13 in the region where the slit 131 and the slit 132 are formed is smaller than the width at the end connected to the bearing member 12. The piezoelectric element 15 shown in FIG. 6 is provided in the region between the slit 131 and the slit 132. A piezoelectric element may be provided on the outside of the slit 131 and the slit 132.

圧電素子１５が、図４、図５又は図６に示したような位置に設けられていることで、圧電素子１５の変形量に対する第１振動部材１３の変形量が大きくなるので、圧電素子１５を変形させるために要する電力の使用効率が高まる。 Since the piezoelectric element 15 is provided at a position as shown in FIG. 4, FIG. 5 or FIG. 6, the amount of deformation of the first vibrating member 13 with respect to the amount of deformation of the piezoelectric element 15 becomes large, so that the piezoelectric element 15 The efficiency of using the power required to transform the is increased.

［ベル１による効果］
以上説明したように、ベル１は、第１振動部材１３に設けられた圧電素子１５を有しており、圧電素子１５の変形に伴って第１振動部材１３及び第２振動部材１４に生じる振動に応じて、ハンマー部１６が筐体１１への衝突を繰り返す。ベル１がこのような構成を有することで、ベル１は、モーターにより動作するベルに比べて消費電力が小さくなるという効果を奏する。 [Effect of Bell 1]
As described above, the bell 1 has the piezoelectric element 15 provided in the first vibrating member 13, and the vibration generated in the first vibrating member 13 and the second vibrating member 14 due to the deformation of the piezoelectric element 15. The hammer portion 16 repeatedly collides with the housing 11. Since the bell 1 has such a configuration, the bell 1 has an effect that the power consumption is smaller than that of the bell operated by the motor.

［第１変形例］
図７は、第１変形例に係るベル２の構成を示す図である。ベル２は、壁部１８をさらに有する点で、図２に示したベル１と異なり、他の点でベル１と同じである。壁部１８は、ハンマー部１６に対して筐体１１と反対側に設けられている。 [First modification]
FIG. 7 is a diagram showing the configuration of the bell 2 according to the first modification. The bell 2 is different from the bell 1 shown in FIG. 2 in that it further has a wall portion 18, and is the same as the bell 1 in other respects. The wall portion 18 is provided on the side opposite to the housing 11 with respect to the hammer portion 16.

ベル２が壁部１８を有することにより、ハンマー部１６は、第２振動部材１４が変位していない状態において筐体１１及び壁部１８に接触せず、第２振動部材１４が変位して振動している状態において筐体１１及び壁部１８に順次接触する。第２振動部材１４が変位していない状態は、圧電素子１５に電圧が印加されていない状態における第２振動部材１４の状態である。 Since the bell 2 has the wall portion 18, the hammer portion 16 does not come into contact with the housing 11 and the wall portion 18 in a state where the second vibrating member 14 is not displaced, and the second vibrating member 14 is displaced and vibrates. In this state, the housing 11 and the wall portion 18 are sequentially contacted. The state in which the second vibrating member 14 is not displaced is the state of the second vibrating member 14 in a state in which no voltage is applied to the piezoelectric element 15.

壁部１８は、例えば筐体１１と同じ材質を有しており、ハンマー部１６が衝突したときに、ハンマー部１６が筐体１１に衝突したときと同じ音を発する。ベル２が壁部１８を有することにより、ハンマー部１６が筐体１１から離れる向きに変位した場合にも音が発生するので、ベル２は、発生する鳴動音の周期を、ベル１が発生する鳴動音の周期よりも短くすることができる。 The wall portion 18 has, for example, the same material as the housing 11, and when the hammer portion 16 collides, the wall portion 18 emits the same sound as when the hammer portion 16 collides with the housing 11. Since the bell 2 has the wall portion 18, a sound is generated even when the hammer portion 16 is displaced in a direction away from the housing 11, so that the bell 2 generates a cycle of the ringing sound generated by the bell 1. It can be shorter than the ringing sound cycle.

また、第２振動部材１４が変位していない状態において、ハンマー部１６の壁部１８側の先端と壁部１８のハンマー部１６側の面との距離は、ハンマー部１６の筐体１１側の先端と筐体１１のない面との距離と等しいことが好ましい。壁部１８がこのような位置に設けられていることにより、ハンマー部１６が筐体１１に衝突したときに生じる音の大きさと、ハンマー部１６が壁部１８に衝突したときに生じる音の大きさとがほぼ等しくなる。 Further, in a state where the second vibrating member 14 is not displaced, the distance between the tip of the hammer portion 16 on the wall portion 18 side and the surface of the wall portion 18 on the hammer portion 16 side is the distance on the housing 11 side of the hammer portion 16. It is preferably equal to the distance between the tip and the surface without the housing 11. Since the wall portion 18 is provided at such a position, the loudness of the sound generated when the hammer portion 16 collides with the housing 11 and the loudness of the sound generated when the hammer portion 16 collides with the wall portion 18. Is almost equal to.

なお、図７においては、壁部１８の断面が長方形で示されているが、壁部１８が、筐体１１よりも直径が小さな金属製のお椀形状であってもよい。壁部１８がお椀形状であることにより、ハンマー部１６が筐体１１に衝突したときに生じる音と同様に音を響かせやすくなる。 Although the cross section of the wall portion 18 is shown as a rectangle in FIG. 7, the wall portion 18 may have a metal bowl shape having a diameter smaller than that of the housing 11. Since the wall portion 18 has a bowl shape, it is easy to make a sound similar to the sound generated when the hammer portion 16 collides with the housing 11.

［第２変形例］
図８は、第２変形例に係るベル３の構成を示す図である。ベル３は、図２に示したベル１における第２振動部材１４の代わりに第２振動部材１９を有する点でベル１と異なり、他の点でベル１と同じである。 [Second modification]
FIG. 8 is a diagram showing the configuration of the bell 3 according to the second modification. The bell 3 is different from the bell 1 in that it has a second vibrating member 19 instead of the second vibrating member 14 in the bell 1 shown in FIG. 2, and is the same as the bell 1 in other respects.

第２振動部材１９は、一端が第１振動部材１３に接続されており、他端にハンマー部１６が接続されている。第２振動部材１９は、第１振動部材１３に接続されている一端から他端まで、筐体１１の外周に沿って湾曲した状態で延在している。第２振動部材１９がこのように湾曲していることで、第２振動部材１９を第２振動部材１４よりも長くすることができる。その結果、ハンマー部１６が筐体１１に衝突したときに筐体１１に加わる力を大きくすることができるので、ベル３は、ベル１よりも大きな鳴動音を発生することができる。 One end of the second vibrating member 19 is connected to the first vibrating member 13, and the hammer portion 16 is connected to the other end. The second vibrating member 19 extends from one end to the other end connected to the first vibrating member 13 in a curved state along the outer periphery of the housing 11. Since the second vibrating member 19 is curved in this way, the second vibrating member 19 can be made longer than the second vibrating member 14. As a result, the force applied to the housing 11 when the hammer portion 16 collides with the housing 11 can be increased, so that the bell 3 can generate a louder ringing sound than the bell 1.

以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されず、その要旨の範囲内で種々の変形及び変更が可能である。例えば、装置の分散・統合の具体的な実施の形態は、以上の実施の形態に限られず、その全部又は一部について、任意の単位で機能的又は物理的に分散・統合して構成することができる。また、複数の実施の形態の任意の組み合わせによって生じる新たな実施の形態も、本発明の実施の形態に含まれる。組み合わせによって生じる新たな実施の形態の効果は、もとの実施の形態の効果を併せ持つ。 Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist. be. For example, the specific embodiment of the distribution / integration of the device is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed / integrated in any unit. Can be done. Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.

例えば、以上の説明においては、第１振動部材１３、第２振動部材１４、第２振動部材１９が板状部材である場合を例示したが、これらの断面形状が長方形ではなく、断面形状が円又は楕円の棒状部材であってもよい。
また、以上の説明においては、ベル１、２、３が非常ベルである場合を例示したが、ベルの用途は任意であり、駅のベルを始めとする任意のベルに本発明を適用することができる。 For example, in the above description, the case where the first vibrating member 13, the second vibrating member 14, and the second vibrating member 19 are plate-shaped members is exemplified, but the cross-sectional shape of these members is not rectangular and the cross-sectional shape is circular. Alternatively, it may be an elliptical rod-shaped member.
Further, in the above description, the case where the bells 1, 2, and 3 are emergency bells is illustrated, but the use of the bells is arbitrary, and the present invention is applied to any bell including a station bell. Can be done.

また、以上の説明においては、図２及び図７における左右方向にハンマー部１６が振動するように示したが、ベル１、２、３が壁面等に取り付けられる向きは任意である。例えば、ハンマー部１６が振動する方向が、重力の方向と一致するようにベル１、２、３が壁面等に取り付けられることが好ましい。このような向きにベル１、２、３が取り付けられることにより、ハンマー部１６が筐体１１に衝突する際に発生する力が強くなるので、より大きな音が発生する。 Further, in the above description, the hammer portion 16 is shown to vibrate in the left-right direction in FIGS. 2 and 7, but the direction in which the bells 1, 2, and 3 are attached to the wall surface or the like is arbitrary. For example, it is preferable that the bells 1, 2, and 3 are attached to the wall surface or the like so that the direction in which the hammer portion 16 vibrates coincides with the direction of gravity. By attaching the bells 1, 2, and 3 in such directions, the force generated when the hammer portion 16 collides with the housing 11 becomes stronger, so that a louder sound is generated.

１、２、３ ベル
１１ 筐体
１２ 軸受部材
１３ 第１振動部材
１４ 第２振動部材
１５ 圧電素子
１６ ハンマー部
１７ 給電部
１８ 壁部
１９ 第２振動部材
１５１ 圧電材料
１５２ 上部電極
１５３ 下部電極
1, 2, 3 Bell 11 Housing 12 Bearing member 13 1st vibrating member 14 2nd vibrating member 15 Piezoelectric element 16 Hammer part 17 Feeding part 18 Wall part 19 2nd vibrating member 151 Piezoelectric material 152 Upper electrode 153 Lower electrode

Claims (4)

筐体と、
前記筐体に固定された軸受部材と、
前記軸受部材から第１方向に延伸する第１振動部材と、
前記第１振動部材の前記軸受部材側と反対側の端部から、前記第１方向と直交する第２方向に延伸する第２振動部材と、
前記第１振動部材における前記第１振動部材の中心位置と前記第２振動部材との間の領域に設けられた圧電素子と、
前記第２振動部材の前記第１振動部材側と反対側の端部に設けられており、前記圧電素子の変形に伴って前記第１振動部材及び前記第２振動部材に生じる振動に応じて前記筐体への衝突を繰り返すハンマー部と、
を有するベル。 With the housing
The bearing member fixed to the housing and
A first vibrating member extending in the first direction from the bearing member,
A second vibrating member extending in a second direction orthogonal to the first direction from the end of the first vibrating member on the side opposite to the bearing member side.
A piezoelectric element provided in a region between the center position of the first vibrating member and the second vibrating member in the first vibrating member, and
The second vibrating member is provided at an end opposite to the first vibrating member side, and is said to respond to vibrations generated in the first vibrating member and the second vibrating member due to deformation of the piezoelectric element. The hammer part that repeatedly collides with the housing and
Bell with. 前記第２振動部材の長さが、前記第１振動部材の長さよりも大きい、
請求項１に記載のベル。 The length of the second vibrating member is larger than the length of the first vibrating member.
The bell according to claim 1. 前記圧電素子は、前記第１振動部材において相対的に可撓性が大きい領域に設けられている、
請求項１又は２に記載のベル。 The piezoelectric element is provided in a region of the first vibrating member having a relatively large flexibility.
The bell according to claim 1 or 2. 前記ハンマー部に対して前記筐体と反対側に設けられた壁部をさらに有し、
前記ハンマー部は、前記第２振動部材が変位していない状態において前記筐体及び前記壁部に接触せず、前記第２振動部材が変位して振動している状態において前記筐体及び前記壁部に順次接触する、
請求項１から３のいずれか一項に記載のベル。 Further having a wall portion provided on the opposite side of the housing with respect to the hammer portion.
The hammer portion does not come into contact with the housing and the wall portion when the second vibrating member is not displaced, and the housing and the wall are vibrated when the second vibrating member is displaced and vibrating. Contact the parts one by one,
The bell according to any one of claims 1 to 3 .
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090235858A1 (en) 2008-03-18 2009-09-24 Yuan Jui-Jen Bell having one-way clapper
JP2014055553A (en) 2012-09-12 2014-03-27 Murata Mfg Co Ltd Piezoelectric fan

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54169484U (en) * 1978-05-19 1979-11-30
JPS5589897A (en) * 1978-12-28 1980-07-07 Rhythm Watch Co Bell percussing device
JPS55137196U (en) * 1979-03-22 1980-09-30
JPS5814398Y2 (en) * 1979-08-28 1983-03-22 株式会社精工舎 bell
JPS57112396U (en) * 1980-12-29 1982-07-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090235858A1 (en) 2008-03-18 2009-09-24 Yuan Jui-Jen Bell having one-way clapper
JP2014055553A (en) 2012-09-12 2014-03-27 Murata Mfg Co Ltd Piezoelectric fan

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