JP5359212B2 - Speaker - Google Patents

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Publication number
JP5359212B2
JP5359212B2 JP2008294126A JP2008294126A JP5359212B2 JP 5359212 B2 JP5359212 B2 JP 5359212B2 JP 2008294126 A JP2008294126 A JP 2008294126A JP 2008294126 A JP2008294126 A JP 2008294126A JP 5359212 B2 JP5359212 B2 JP 5359212B2
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JP
Japan
Prior art keywords
frame
yoke
speaker
peripheral edge
inner peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2008294126A
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Japanese (ja)
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JP2010124091A (en
Inventor
哲 伊藤
毅彦 田名部
光一 久世
昌志 川邊
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Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP2008294126A priority Critical patent/JP5359212B2/en
Priority to PCT/JP2009/006101 priority patent/WO2010058543A1/en
Publication of JP2010124091A publication Critical patent/JP2010124091A/en
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Publication of JP5359212B2 publication Critical patent/JP5359212B2/en
Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Abstract

Provided is a speaker having a reduced thickness which can be used for various acoustic devices and information communication devices.  The speaker includes: a magnetic circuit formed by a yoke, an upper plate, and a magnet sandwiched by the yoke and the upper plate; and a frame connected to the magnetic circuit.  The yoke has a first concave/convex portion at the end thereof.  The frame has a second concave/convex portion at the internal circumference to be engaged with the first concave/convex portion.  As compared to a conventional speaker having the configuration that the yoke is inserted into and fixed to the internal circumference of the frame, the speaker of the present invention can have a small thickness by reducing the frame height by the thickness of the internal circumference.

Description

本発明は各種音響機器および情報通信機器に使用されるスピーカに関するものである。
The present invention relates to a speaker used in various audio equipment and information communication equipment.

携帯電話の小型化に対応するために、矩形型やトラック型というスリムタイプのスピーカが最近では注目されつつある。そのため、ヨークを矩形型形状に構成してスペースファクターを向上させようとしているものが多い。   In order to cope with the miniaturization of mobile phones, a slim type speaker such as a rectangular type or a track type has recently been attracting attention. For this reason, there are many attempts to improve the space factor by configuring the yoke in a rectangular shape.

従来のスピーカについて図５により説明する。   A conventional speaker will be described with reference to FIG.

図５は従来のスピーカの断面図を示したものである。図５によると、矩形型のマグネット１をヨーク３と上部プレート２により挟持して磁気回路４を構成している。この磁気回路４のヨーク３にフレーム６を結合している。そして、このフレーム６の周縁部に振動板７を接着し、この振動板７にこれを駆動させるためのボイスコイル８を結合し、このボイスコイル８を磁気ギャップ５に嵌まり込むように設置している。このフレーム６の周縁部は振動板７を覆うように合成樹脂製のプロテクタ９を結合して構成している。   FIG. 5 shows a cross-sectional view of a conventional speaker. According to FIG. 5, a rectangular magnet 1 is sandwiched between a yoke 3 and an upper plate 2 to constitute a magnetic circuit 4. A frame 6 is coupled to the yoke 3 of the magnetic circuit 4. Then, a diaphragm 7 is bonded to the periphery of the frame 6, a voice coil 8 for driving the diaphragm 7 is coupled to the diaphragm 7, and the voice coil 8 is installed so as to fit into the magnetic gap 5. ing. A synthetic resin protector 9 is coupled to the periphery of the frame 6 so as to cover the diaphragm 7.

なお、この出願の発明に関連する先行技術文献情報としては、例えば、特許文献１が知られている。
特開２００３−７８９９１号公報 As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2003-78991 A

上述のスピーカは、矩形型の磁気回路４を有しているため、スピーカを搭載しようとする携帯電話等のシステム内搭載部品の相互配置の関係上、スペースファクターを向上できる利点がある。しかしながら、携帯電話等の機器本体の薄型化が進む中、これに搭載するスピーカもますます薄型化の要求が求められている。   Since the above-described speaker has the rectangular magnetic circuit 4, there is an advantage that the space factor can be improved due to the mutual arrangement of components mounted in the system such as a mobile phone on which the speaker is to be mounted. However, as the body of a device such as a mobile phone is becoming thinner, there is an increasing demand for thinner speakers.

図５に示す従来のスピーカは、その高さがヨーク３の高さとフレーム６の高さの和に大きく依存している。ヨーク３とフレーム６の結合形態は、ヨーク３の端部をフレーム６の内周縁部の下端まで挿入して、ヨーク３とフレーム６を接着固定して構成されている。   The height of the conventional speaker shown in FIG. 5 greatly depends on the sum of the height of the yoke 3 and the height of the frame 6. The yoke 3 and the frame 6 are joined by inserting the end of the yoke 3 to the lower end of the inner peripheral edge of the frame 6 and bonding and fixing the yoke 3 and the frame 6.

そこで、このスピーカの更なる薄型化を図るにあたって、ヨーク３とフレーム６の結合構造を変更することにより、更なる薄型化を可能とするものである。   Therefore, in order to further reduce the thickness of the speaker, it is possible to further reduce the thickness by changing the coupling structure of the yoke 3 and the frame 6.

本発明は、上記課題を解決するものであり、ヨーク３とフレーム６の結合構造を変更することにより、更なる薄型化を実現できる優れたスピーカを提供するものである。   The present invention solves the above-described problems, and provides an excellent speaker that can realize further reduction in thickness by changing the coupling structure of the yoke 3 and the frame 6.

上記課題を解決するために、本発明は以下の構成を有する。   In order to solve the above problems, the present invention has the following configuration.

本発明の請求項１に記載の発明は、磁気回路と、この磁気回路に結合されたフレームと、このフレームの周縁部に結合された振動板と、この振動板に結合されるとともに、その一部が前記磁気回路の磁気ギャップに配置されたボイスコイルと、前記フレームの周縁部に結合され前記振動板を覆うように配置されたプロテクタとからなるスピーカであって、前記磁気回路は、マグネットをヨークと上部プレートとで挟持するとともに、前記ヨークの端部を折り曲げることによって前記上部プレートとの間で前記磁気ギャップを構成しており、前記ヨークの端部に設けられた凹凸部を前記フレームの内周縁部に設けられた凹凸部に嵌め合わせてフレームと結合しているものである。 According to the first aspect of the present invention, there is provided a magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to a peripheral portion of the frame, and the diaphragm coupled to the diaphragm. a voice coil section is disposed in a magnetic gap of the magnetic circuit, a speaker consisting of arranged protector as coupled to the peripheral portion of said frame to cover the diaphragm, the magnetic circuit includes a magnet The magnetic gap is formed between the yoke and the upper plate, and the end portion of the yoke is bent to form the magnetic gap between the upper plate and the uneven portion provided at the end of the yoke. It is fitted to the concavo-convex portion provided on the inner peripheral edge portion and is coupled to the frame .

以上のように、本発明は、磁気回路を構成するヨークの端部に凹凸部を設けるとともに、フレームの内周縁部にも凹凸部を設け、これらの凹凸部を互いに嵌め合うように組み立てて構成することにより、従来のスピーカにおいてヨークをフレームの内周縁部に挿入固定して接着固定していた構成に較べ、そのフレームの内周縁部の厚み分だけ高さを低減でき、薄型化を図ることができるものである。   As described above, according to the present invention, an uneven portion is provided at the end of the yoke that constitutes the magnetic circuit, and an uneven portion is also provided at the inner peripheral edge of the frame, and these uneven portions are assembled to fit together. As a result, the height can be reduced by the thickness of the inner peripheral edge of the frame and the thickness can be reduced compared to the conventional speaker in which the yoke is inserted and fixed to the inner peripheral edge of the frame. It is something that can be done.

よって本発明は、構成部品を増やすことなく、安価で薄型化を実現できるスピーカを提供することができ、その工業的価値は非常に大なるものである。   Therefore, the present invention can provide a speaker that can be made thin at low cost without increasing the number of components, and its industrial value is very large.

以下、本発明の実施の形態について図面を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態１）
図１は、本発明の実施の形態１におけるスピーカの断面図、図２は同スピーカにおけるフレームとヨークの組立て前の状態を示す斜視図、図３は同スピーカにおけるフレームとヨークとプレートの組立て状態を示す斜視図、図４は本発明の他の実施の形態におけるスピーカの断面図を示したものである。 (Embodiment 1)
1 is a cross-sectional view of a speaker according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a state before the frame and yoke are assembled in the speaker, and FIG. 3 is an assembled state of the frame, yoke and plate in the speaker. FIG. 4 is a sectional view of a speaker according to another embodiment of the present invention.

図１において、矩形型のマグネット２１をヨーク２３と上部プレート２２により挟持して矩形型の磁気回路２４を構成している。   In FIG. 1, a rectangular magnet 21 is sandwiched between a yoke 23 and an upper plate 22 to form a rectangular magnetic circuit 24.

ヨーク２３は、図１に示すように、上部プレート２２との間で磁気ギャップが形成されるように、その端部で直角方向に折り曲げられている。また、ヨーク２３の端部には、図２に示すように凹凸部の切り欠きを設け、凹部３２、凸部３１を形成する。同じように、フレーム２６にも、その内周縁部に凹凸部の切り欠きを設け、凹部３４、凸部３３を形成する。また、フレーム２６の内周縁部の凹部３４の側面に沿って接着剤溜りの溝３０を形成している。 As shown in FIG. 1, the yoke 23 is bent in a perpendicular direction at its end so that a magnetic gap is formed between the yoke 23 and the upper plate 22. Further , as shown in FIG. 2, the concave portion 32 and the convex portion 31 are formed at the end of the yoke 23 by providing a notch in the concave and convex portion. Similarly, the frame 26 is also provided with a notch in the concave and convex portions at the inner peripheral edge thereof to form the concave portion 34 and the convex portion 33. Further, an adhesive reservoir groove 30 is formed along the side surface of the recess 34 at the inner peripheral edge of the frame 26.

そして、図３のフレーム２６と磁気回路２４を構成するヨーク２３とプレート２２の組立て状態の斜視図に示すように、この矩形型の磁気回路２４のヨーク２３をフレーム２６の内周面に沿わしながらフレーム２６に挿入し、ヨーク２３の端部に設けた凹凸部３１、３２とフレーム２６の内周縁部に設けた凹凸部３３、３４が互いに嵌め合うように組み立てる。その後、フレーム２６の内周縁部の凹部３４の側面に沿って設けた接着剤溜りの溝３０に接着剤を充填して、フレーム２６とヨーク２３を結合する。   Then, as shown in the perspective view of the assembled state of the yoke 23 and the plate 22 constituting the frame 26 and the magnetic circuit 24 in FIG. 3, the yoke 23 of the rectangular magnetic circuit 24 is placed along the inner peripheral surface of the frame 26. Then, it is inserted into the frame 26 and assembled so that the concave and convex portions 31 and 32 provided at the end of the yoke 23 and the concave and convex portions 33 and 34 provided at the inner peripheral edge of the frame 26 are fitted together. After that, the adhesive 26 is filled into the groove 30 of the adhesive reservoir provided along the side surface of the recess 34 at the inner peripheral edge of the frame 26, and the frame 26 and the yoke 23 are joined.

ここで図３に示すように、組み立てて結合させた状態において、ヨーク２３の端部の凸部３１の上面とフレーム２６の内周縁部の上面とが同一平面になるように構成することが好ましい。   Here, as shown in FIG. 3, it is preferable that the upper surface of the convex portion 31 at the end of the yoke 23 and the upper surface of the inner peripheral edge portion of the frame 26 be in the same plane in the assembled and coupled state. .

そのためにはヨーク２３に設けた凹凸部の凹部３２の切り欠きの深さを、フレーム２６の内周縁部に設けた凹凸部の凸部３３の厚みと同一にすることが必要である。   For this purpose, it is necessary to make the notch depth of the concave portion 32 of the concave and convex portion provided in the yoke 23 the same as the thickness of the convex portion 33 of the concave and convex portion provided in the inner peripheral edge portion of the frame 26.

また、フレーム２６の内周縁部に設けた凹凸部の凸部３３の幅（図３に示すＬ）は、ヨーク２３に設けた凹凸部の凹部３２の幅とほぼ同一とし、この幅はフレーム２６とヨーク２３の結合強度を確保できる範囲内で、できるだけ小さいほうが好ましい。   Further, the width (L shown in FIG. 3) of the convex portion 33 of the concave and convex portion provided on the inner peripheral edge portion of the frame 26 is substantially the same as the width of the concave portion 32 of the concave and convex portion provided on the yoke 23. And the yoke 23 are preferably as small as possible within a range in which the coupling strength can be secured.

このようにして組立て、結合したフレーム２６の周縁部に、振動板２７を接着固定し、この振動板２７にはこれを駆動させるためのボイスコイル２８を結合し、このボイスコイル２８は磁気ギャップ２５に嵌まり込むような形で設置される。   A diaphragm 27 is bonded and fixed to the peripheral edge of the frame 26 assembled and coupled in this manner, and a voice coil 28 for driving the diaphragm 27 is coupled to the diaphragm 27, and the voice coil 28 has a magnetic gap 25. It is installed in a form that fits in

そして、振動板２７と矩形型の磁気回路２４の一部を覆うように、矩形形状に形成されたプロテクタ２９をフレーム２６に結合して、薄型スピーカを完成させる。   Then, a protector 29 formed in a rectangular shape so as to cover a part of the diaphragm 27 and the rectangular magnetic circuit 24 is coupled to the frame 26 to complete a thin speaker.

この実施の形態では、ヨーク２３の端部に設けた凹凸部３１、３２とフレーム２６の内周縁部に設けた凹凸部３３、３４が互いに嵌め合うように組み立てて結合させた状態において、ヨーク２３の端部の凸部３１の上面とフレーム２６の内周縁部の上面とが同一平面になるように構成したスピーカについて説明したが、他の実施の形態として、図４に示すようにヨーク２３の端部の凸部３１の上面がフレーム２６の内周縁部の上面より上にくるように組み立ててもよい。この場合には、スピーカの厚みを更に薄くすることができる。   In this embodiment, in a state where the uneven portions 31 and 32 provided at the end of the yoke 23 and the uneven portions 33 and 34 provided at the inner peripheral edge of the frame 26 are assembled and joined so as to fit each other, the yoke 23 In the above description, the speaker is configured such that the upper surface of the convex portion 31 at the end and the upper surface of the inner peripheral edge of the frame 26 are flush with each other. However, as another embodiment, as shown in FIG. You may assemble so that the upper surface of the convex part 31 of an edge part may be above the upper surface of the inner peripheral part of the flame | frame 26. FIG. In this case, the thickness of the speaker can be further reduced.

このように本発明のスピーカは、磁気回路２４を構成するヨーク２３の端部に凹凸部３１、３２を設けるとともに、フレーム２６の内周縁部にも凹凸部３３、３４を設け、ヨーク２３の端部の凹凸部３１、３２とフレーム２６の内周縁部の凹凸部３３、３４を互いに嵌め合うように組み立てて構成することにより、従来のスピーカにおいてヨーク３をフレーム６の内周縁部に挿入して接着固定していた構成に較べ、部品点数を増やすことなく、フレーム６の内周縁部の厚み分だけ高さを低減でき、薄型化を図ることができるものである。   As described above, the speaker of the present invention is provided with the concave and convex portions 31 and 32 at the end of the yoke 23 constituting the magnetic circuit 24, and is also provided with the concave and convex portions 33 and 34 at the inner peripheral edge of the frame 26. In the conventional speaker, the yoke 3 is inserted into the inner peripheral edge of the frame 6 by assembling the concave and convex parts 31 and 32 of the inner part and the uneven parts 33 and 34 of the inner peripheral edge of the frame 26 so as to fit each other. The height can be reduced by the thickness of the inner peripheral edge of the frame 6 and the thickness can be reduced without increasing the number of parts as compared with the configuration in which the adhesive is fixed.

以上の構成は、矩形形状の磁気回路２４について説明したが、円形形状の磁気回路についても適用することができ、この場合も同様に、部品点数を増やすことなく、フレームの内周縁部の厚み分だけ高さを低減でき、薄型化を図ることができるものである。   Although the above configuration has been described for the rectangular magnetic circuit 24, it can also be applied to a circular magnetic circuit. In this case as well, the thickness of the inner peripheral edge of the frame can be increased without increasing the number of parts. Therefore, the height can be reduced and the thickness can be reduced.

本発明は、ヨークの端部とフレームの内周縁部に凹凸の切り欠き部を設け、それらが互いに嵌め合うように組み立てた構成を有するもので、薄型のスピーカを提供することができる。この結果、携帯電話機等の携帯機器に活用しやすいものとなる。   The present invention has a structure in which concave and convex notches are provided in the end of the yoke and the inner peripheral edge of the frame and assembled so that they fit together, and a thin speaker can be provided. As a result, it becomes easy to utilize for portable devices such as a cellular phone.

本発明の実施の形態１におけるスピーカの断面図Sectional drawing of the speaker in Embodiment 1 of this invention 同スピーカにおけるフレームとヨークの組立て前の状態を示す斜視図The perspective view which shows the state before the assembly of the flame | frame and yoke in the speaker 同スピーカにおけるフレームとヨークとプレートの組立て状態を示す斜視図The perspective view which shows the assembly state of the flame | frame, yoke, and plate in the speaker 本発明の他の実施の形態におけるスピーカの断面図Sectional drawing of the speaker in other embodiment of this invention 従来のスピーカを示す断面図Sectional view showing a conventional speaker

符号の説明Explanation of symbols

２１ マグネット
２２ 上部プレート
２３ ヨーク
２４ 磁気回路
２５ 磁気ギャップ
２６ フレーム
２７ 振動板
２８ ボイスコイル
２９ プロテクタ
３０ 溝
３１、３３ 凸部
３２、３４ 凹部 21 Magnet 22 Upper plate 23 Yoke 24 Magnetic circuit 25 Magnetic gap 26 Frame 27 Diaphragm 28 Voice coil 29 Protector 30 Groove 31, 33 Convex part 32, 34 Concave part

Claims (5)

磁気回路と、この磁気回路に結合されたフレームと、このフレームの周縁部に結合された振動板と、この振動板に結合されるとともに、その一部が前記磁気回路の磁気ギャップに配置されたボイスコイルと、前記フレームの周縁部に結合され前記振動板を覆うように配置されたプロテクタとからなるスピーカであって、前記磁気回路は、マグネットをヨークと上部プレートとで挟持するとともに、前記ヨークの端部を折り曲げることによって前記上部プレートとの間で前記磁気ギャップを構成しており、前記ヨークの端部に設けられた凹凸部を前記フレームの内周縁部に設けられた凹凸部に嵌め合わせてフレームと結合しているスピーカ。 A magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to a peripheral portion of the frame, and a part coupled to the diaphragm, and a part thereof being disposed in the magnetic gap of the magnetic circuit A speaker comprising a voice coil and a protector coupled to a peripheral edge of the frame and arranged to cover the diaphragm, wherein the magnetic circuit sandwiches a magnet between a yoke and an upper plate, and the yoke The magnetic gap is formed between the upper plate and the upper plate by bending the end of the frame, and the uneven portion provided at the end of the yoke is fitted to the uneven portion provided at the inner peripheral edge of the frame. Speaker combined with the frame. ヨークの端部の凸部の上面とフレームの内周縁部の上面とが同一平面になるようにした請求項１記載のスピーカ。 The speaker according to claim 1, wherein the upper surface of the convex portion at the end of the yoke and the upper surface of the inner peripheral edge portion of the frame are flush with each other. ヨークの端部に設けた凹凸部の切り欠きの深さを、フレームの内周縁部の厚みと同一とした請求項１記載のスピーカ。 The speaker according to claim 1, wherein the depth of the notch in the uneven portion provided at the end of the yoke is the same as the thickness of the inner peripheral edge of the frame. ヨークが矩形形状からなる請求項１から請求項３のいずれか１つに記載のスピーカ。 The speaker according to any one of claims 1 to 3, wherein the yoke has a rectangular shape. ヨークの端部の凸部と嵌め合わされるフレームの内周縁部の凹部の側面に接着剤溜りの溝を設けた請求項１から請求項３のいずれか１つに記載のスピーカ。 The speaker according to any one of claims 1 to 3, wherein a groove for storing an adhesive is provided on a side surface of a concave portion of an inner peripheral edge portion of a frame fitted with a convex portion at an end portion of the yoke.
JP2008294126A 2008-11-18 2008-11-18 Speaker Expired - Fee Related JP5359212B2 (en)

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JP2008294126A JP5359212B2 (en) 2008-11-18 2008-11-18 Speaker
PCT/JP2009/006101 WO2010058543A1 (en) 2008-11-18 2009-11-16 Speaker

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JP5533667B2 (en) * 2008-12-25 2014-06-25 三洋電機株式会社 Speaker unit and portable information terminal
JP5671689B2 (en) * 2010-07-15 2015-02-18 パナソニックＩｐマネジメント株式会社 Speaker
AT520363A3 (en) * 2017-10-06 2020-03-15 Sound Solutions Int Co Ltd Transducer with collar
JP7398732B2 (en) 2020-01-29 2023-12-15 パナソニックＩｐマネジメント株式会社 Speaker device and method for manufacturing the speaker device

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JPS5547798A (en) * 1978-10-02 1980-04-04 Hitachi Ltd Speaker
JP2000261887A (en) * 1999-03-05 2000-09-22 Foster Electric Co Ltd Electroacoustic transducer for portable information device
JP2003259478A (en) * 2002-03-01 2003-09-12 Alps Electric Co Ltd Acoustic apparatus
JP3869782B2 (en) * 2002-10-01 2007-01-17 三洋電機株式会社 Speaker device
JP2004248016A (en) * 2003-02-14 2004-09-02 Matsushita Electric Ind Co Ltd Loud speaker and its manufacturing method
JP4677341B2 (en) * 2005-12-21 2011-04-27 パイオニア株式会社 Speaker device and mobile phone
JP5156912B2 (en) * 2007-02-02 2013-03-06 並木精密宝石株式会社 Multi-function vibration actuator

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