JP2006041864A - Waterproof structure of microphone arranged inside wireless apparatus - Google Patents

Waterproof structure of microphone arranged inside wireless apparatus Download PDF

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JP2006041864A
JP2006041864A JP2004218241A JP2004218241A JP2006041864A JP 2006041864 A JP2006041864 A JP 2006041864A JP 2004218241 A JP2004218241 A JP 2004218241A JP 2004218241 A JP2004218241 A JP 2004218241A JP 2006041864 A JP2006041864 A JP 2006041864A
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microphone
waterproof structure
passage hole
case
packing
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JP4441351B2 (en
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Hiroshi Nakayama
博史 中山
Hiroyuki Gunji
博之 郡司
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Kenwood KK
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Kenwood KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof structure of a microphone whereby intrusion of water to the microphone can be prevented even when a water jet stream is applied to a wireless apparatus or the wireless apparatus is submerged and a water retention in a front space of the microphone can be prevented by only interposing a packing between a case and the microphone. <P>SOLUTION: A vibration membrane 4c for closing a sound passing hole 1a is integrally formed to the packing 4 interposed between the case 1 and the microphone 2 in a way of being pressed into contact with the circumferential edge of the sound passing hole 1a formed to the case 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は無線機器に係わり、特に、そのマイクロホンの防水構造に関する。   The present invention relates to a wireless device, and more particularly to a waterproof structure of the microphone.

従来の携帯電話機等の無線機器内部に配置されるマイクロホンの防水構造の例を図３に示す。図３に示すフロントケース１には音通過孔１ａが設けられ音通過孔１ａの内部にコンデンサマイクロホン２（ＥＣＭ）が配置されている。フロントケース１とコンデンサマイクロホン２の間にはゴム製のパッキング７が介装されている。   FIG. 3 shows an example of a waterproof structure of a microphone disposed inside a wireless device such as a conventional mobile phone. The front case 1 shown in FIG. 3 is provided with a sound passage hole 1a, and a condenser microphone 2 (ECM) is disposed inside the sound passage hole 1a. A rubber packing 7 is interposed between the front case 1 and the condenser microphone 2.

パッキング７に設けられたループ状のリブ７ａ、７ｂは夫々フロントケース１の音通過孔１ａの周縁およびコンデンサマイクロホン２に圧接されており、無線機器内部に水が侵入することを防止する。   Loop-like ribs 7a and 7b provided in the packing 7 are in pressure contact with the periphery of the sound passage hole 1a of the front case 1 and the condenser microphone 2, respectively, and prevent water from entering the inside of the wireless device.

また、フロントケース１の音通過孔１ａを塞ぐようにメッシュシート３がフロントケース１に張り付けられ、コンデンサマイクロホン２の音通過孔１ａと対向する面には防水布８が張り付けられていた。   Further, the mesh sheet 3 is attached to the front case 1 so as to close the sound passage hole 1a of the front case 1, and the waterproof cloth 8 is attached to the surface of the condenser microphone 2 facing the sound passage hole 1a.

音通過孔１ａの正面から図示の矢印で示す方向に水圧がかかる場合には、メッシュシート３で水勢をある程度和らげ、さらに、防水布８でコンデンサマイクロホン２内に水が入るのを防止する。   When water pressure is applied from the front of the sound passage hole 1a in the direction indicated by the arrow in the drawing, the water force is moderated to some extent by the mesh sheet 3, and further, the waterproof cloth 8 prevents water from entering the condenser microphone 2.

上記した従来のマイクロホンの防水構造によると、多少の水が外側からかかる程度であればよいが、多量の水噴流がかかる場合や、機器が水没した場合には急激な水圧変化に防水布が耐えられずマイクロホンが破損する恐れがあった。   According to the waterproof structure of the conventional microphone described above, it is sufficient that some amount of water is applied from the outside. The microphone could be damaged.

また、水没した状態から機器を取り出した場合に、メッシュシート３と防水布８との間のマイクロホン前面空間に水の表面張力により水が溜まり音圧が著しく低下する傾向があった。   Further, when the device is taken out from the submerged state, water has accumulated in the space in front of the microphone between the mesh sheet 3 and the waterproof cloth 8 due to the surface tension of the water, and the sound pressure tends to be remarkably reduced.

特開２００２−１６３７４号公報に示された携帯電話機の音響部品の防水構造ではケース本体１の音響部品６前面に設けられた放音孔２を塞ぐように防水膜３が張り付けられている。   In the waterproof structure of an acoustic component of a mobile phone disclosed in Japanese Patent Application Laid-Open No. 2002-16374, a waterproof film 3 is attached so as to close the sound emitting hole 2 provided on the front surface of the acoustic component 6 of the case body 1.

上記した特開２００２−１６３７４号公報に示された防水構造では放音孔２から音響部品６の側に水が侵入することが防水膜３により防ぐことができるが、防水膜３をケース本体１に張り付ける工程が必要であり、製造コストが高くなるという問題があった。
特開平２０００−１６３７４号公報、段落００１２、図２ In the waterproof structure disclosed in Japanese Unexamined Patent Application Publication No. 2002-16374 described above, water can be prevented from entering the sound component 6 from the sound emitting hole 2 by the waterproof film 3. There is a problem that a process of attaching to the substrate is necessary and the manufacturing cost is increased.
Japanese Patent Laid-Open No. 2000-16374, paragraph 0012, FIG.

この発明は上記した点に鑑みてなされたものであって、その目的とするところは、ケースとマイクロホンとの間にパッキングを介装するだけで、水噴流がかかる場合や、機器が水没した場合にもマイクロホンへの水の侵入を防止でき、また、マイクロホン前面空間に水が溜まることを防止できるマイクロホンの防水構造を提供することにある。   The present invention has been made in view of the above points, and the object of the present invention is when a water jet is applied or a device is submerged just by inserting a packing between the case and the microphone. It is another object of the present invention to provide a waterproof structure for a microphone that can prevent water from entering the microphone and prevent water from accumulating in the front space of the microphone.

この発明の無線機器内部に配置されるマイクロホンの防水構造は、ケースに設けられた音通過孔の周縁に圧接するように前記ケースとマイクロホンとの間に介装されるパッキングに前記音通過孔を塞ぐ振動膜を一体に形成したものである。   The waterproof structure of the microphone disposed inside the wireless device according to the present invention is such that the sound passage hole is provided in a packing interposed between the case and the microphone so as to be in pressure contact with the periphery of the sound passage hole provided in the case. A vibrating membrane for closing is integrally formed.

また、前記マイクロホンの防水構造において、前記パッキングに前記ケースに設けられた音通過孔の周縁に圧接されるループ状のリブを設けたものである。   In the waterproof structure of the microphone, a loop-shaped rib that is pressed against the periphery of a sound passage hole provided in the case is provided on the packing.

また、前記各マイクロホンの防水構造において、前記振動膜と前記マイクロホンとの間にフロントキャビティを形成するホルダを配置したものである。   In the waterproof structure of each microphone, a holder for forming a front cavity is disposed between the vibrating membrane and the microphone.

また、前記各マイクロホンの防水構造において、前記振動膜に共振周波数を調整する凸部を形成したものである。   Further, in the waterproof structure of each microphone, a convex portion for adjusting a resonance frequency is formed on the vibrating membrane.

さらに、この発明の無線機器内部に配置されるマイクロホンの防水構造は、ケースに設けられた音通過孔の周縁に圧接するように前記ケースとマイクロホンとの間に介装されるパッキングに前記音通過孔を塞ぐ振動板をドーム形状のエッジを介して一体に形成したものである。   Furthermore, the waterproof structure of the microphone disposed inside the wireless device according to the present invention is such that the sound passage is provided in a packing interposed between the case and the microphone so as to be pressed against the periphery of the sound passage hole provided in the case. A diaphragm that closes the hole is integrally formed through a dome-shaped edge.

また、前記各マイクロホンの防水構造において、前記音通過孔にメッシュシートを配置したものである。   Further, in the waterproof structure of each microphone, a mesh sheet is disposed in the sound passage hole.

この発明のマイクロホンの防水構造によれば、マイクロホンへの水の侵入が完全に防止できる。従って、防水性能を高めたマイクロホンを用いることなく、通常のマイクロホンを使用できる。   According to the microphone waterproof structure of the present invention, water can be completely prevented from entering the microphone. Therefore, a normal microphone can be used without using a microphone with improved waterproof performance.

また、マイクロホン前面の防水布を配置する必要がなく、製造コストが安くなる。さらに、多量の水噴流や水没による水圧がかかってもマイクロホン前面空間に水が溜まることがなく、音圧の低下が防止される。   Further, it is not necessary to arrange a waterproof cloth on the front surface of the microphone, and the manufacturing cost is reduced. Furthermore, even if a large amount of water jets or water pressure due to submergence is applied, water does not accumulate in the space in front of the microphone, and a decrease in sound pressure is prevented.

以下この発明を実施するための最良の形態を実施例に即して説明する。   The best mode for carrying out the present invention will be described below with reference to examples.

図１はこの発明の実施例１である無線機器のマイクロホンの防水構造を示す断面図である。図１に示すフロントケース１には音通過孔１ａが設けられ音通過孔１ａの内部にコンデンサマイクロホン２（ＥＣＭ）が配置されている。フロントケース１とコンデンサマイクロホン２の間にはゴム製のパッキング４が介装されている。   1 is a cross-sectional view showing a waterproof structure of a microphone of a wireless device which is Embodiment 1 of the present invention. The front case 1 shown in FIG. 1 is provided with a sound passage hole 1a, and a condenser microphone 2 (ECM) is disposed inside the sound passage hole 1a. Between the front case 1 and the condenser microphone 2, a rubber packing 4 is interposed.

パッキング４に設けられたループ状のリブ４ａ、４ｂは夫々フロントケース１の音通過孔１ａの周縁およびコンデンサマイクロホン２に圧接されており、無線機器内部に水が侵入することを防止する。   The loop-shaped ribs 4a and 4b provided in the packing 4 are in pressure contact with the peripheral edge of the sound passage hole 1a of the front case 1 and the condenser microphone 2, respectively, and prevent water from entering the wireless device.

また、フロントケース１の音通過孔１ａを塞ぐようにメッシュシート３がフロントケース１に張り付けられている。パッキング４の先端部には音通過孔１ａと対向する位置に振動膜４ｃが形成されてパッキング４の先端部が塞がれている。   A mesh sheet 3 is attached to the front case 1 so as to close the sound passage hole 1 a of the front case 1. A vibration film 4c is formed at a position facing the sound passage hole 1a at the front end of the packing 4 so that the front end of the packing 4 is closed.

振動膜４ｃの中央部には凸部４ｄが設けられている。コンデンサマイクロホン２の前面と振動膜４ｃとの間の空間にはホルダ５が配置されている。ホルダ５の前面にはテーパ形状の音を導く面が形成されている。   A convex portion 4d is provided at the center of the vibration film 4c. A holder 5 is disposed in a space between the front surface of the condenser microphone 2 and the vibrating membrane 4c. A surface for guiding a tapered sound is formed on the front surface of the holder 5.

上記構成において、音通過孔１ａの正面から図示の矢印で示す方向に水圧がかかる場合には、メッシュシート３で水勢をある程度和らげ、さらに、パッキング４の振動膜４ｃにより水の侵入経路が塞がれ水の侵入が完全に防止される。   In the above configuration, when water pressure is applied from the front of the sound passage hole 1a in the direction indicated by the arrow in the drawing, the water force is moderated to some extent by the mesh sheet 3, and the water intrusion path is blocked by the vibrating membrane 4c of the packing 4. Intrusion of water is completely prevented.

パッキング４の振動膜４ｃが水の侵入経路を塞ぐことは音の侵入経路（音道）も塞ぐことになり音圧が低下してしまう。そこで、音圧が大きく低下することのないように振動膜４ｃの膜厚を薄くして広い面積とし、振動膜４ｃを振動させ、さらに、ホルダ５のテーパ形状部で音を集音してコンデンサマイクロホン２に伝えるようにしてコンデンサマイクロホン２に伝えられる音の音圧低下を防いでいる。   When the vibration film 4c of the packing 4 blocks the water intrusion path, the sound intrusion path (sound path) is also blocked, and the sound pressure decreases. Therefore, the vibration film 4c is thinned to have a large area so that the sound pressure does not greatly decrease, the vibration film 4c is vibrated, and sound is collected by the taper-shaped portion of the holder 5 to obtain a capacitor. The sound pressure of the sound transmitted to the condenser microphone 2 is prevented from being transmitted to the microphone 2.

なお、ホルダ５はフロントキャビティ５ａを形成しており、コンデンサマイクロホン２が受ける音の周波数特性を調整する機能を有する。このようにパッキング４の振動膜４ｃにより水の侵入が完全に防止できるため従来用いられていた防水布が不要となり、製造コストが安くなる。   The holder 5 forms a front cavity 5a and has a function of adjusting the frequency characteristics of the sound received by the condenser microphone 2. In this way, the vibration film 4c of the packing 4 can completely prevent water from entering, so that a conventionally used waterproof cloth becomes unnecessary, and the manufacturing cost is reduced.

振動膜４ｃに設けられた凸部４ｄの質量を調整することにより振動膜４ｃの共振周波数を調整でき、コンデンサマイクロホン２が受ける音の周波数特性を調整することが可能となる。なお、凸部４ｄは振動膜４ｃの裏面側（コンデンサマイクロホン２側）に形成してもよい。   By adjusting the mass of the protrusion 4d provided on the vibration film 4c, the resonance frequency of the vibration film 4c can be adjusted, and the frequency characteristics of the sound received by the condenser microphone 2 can be adjusted. In addition, you may form the convex part 4d in the back surface side (condenser microphone 2 side) of the vibration film 4c.

図２はこの発明の実施例２である無線機器のマイクロホンの防水構造を示す断面図である。図２に示すフロントケース１には音通過孔１ａが設けられ音通過孔１ａの内部にコンデンサマイクロホン２（ＥＣＭ）が配置されている。フロントケース１とコンデンサマイクロホン２の間にはゴム製のパッキング６が介装されている。   2 is a cross-sectional view showing a waterproof structure of a microphone of a wireless device according to a second embodiment of the present invention. The front case 1 shown in FIG. 2 is provided with a sound passage hole 1a, and a condenser microphone 2 (ECM) is disposed inside the sound passage hole 1a. Between the front case 1 and the condenser microphone 2, a rubber packing 6 is interposed.

パッキング６に設けられたループ状のリブ６ａ、６ｂは夫々フロントケース１の音通過孔１ａの周縁およびコンデンサマイクロホン２に圧接されており、無線機器内部に水が侵入することを防止する。   The loop-shaped ribs 6a and 6b provided in the packing 6 are in pressure contact with the periphery of the sound passage hole 1a of the front case 1 and the condenser microphone 2, respectively, and prevent water from entering the wireless device.

また、フロントケース１の音通過孔１ａを塞ぐようにメッシュシート３がフロントケース１に張り付けられている。パッキング６の先端部には音通過孔１ａと対向する位置に振動板６ｃがドーム形状のエッジ６ｄを介して一体に形成されパッキング６の先端部が塞がれている。   A mesh sheet 3 is attached to the front case 1 so as to close the sound passage hole 1 a of the front case 1. A diaphragm 6c is integrally formed at the tip of the packing 6 at a position facing the sound passage hole 1a via a dome-shaped edge 6d, and the tip of the packing 6 is closed.

上記構成において、音通過孔１ａの正面から図示の矢印で示す方向に水圧がかかる場合には、メッシュシート３で水勢をある程度和らげ、さらに、パッキング６の振動板６ｃにより水の侵入経路が塞がれて水の侵入が完全に防止される。   In the above configuration, when water pressure is applied from the front of the sound passage hole 1a in the direction indicated by the arrow shown in the figure, the water force is moderated to some extent by the mesh sheet 3, and the water intrusion path is blocked by the diaphragm 6c of the packing 6. Intrusion of water is completely prevented.

パッキング６の振動板６ｃが水の侵入経路を塞ぐことは音の侵入経路（音道）も塞ぐことになり音圧が低下してしまう。そこで、音圧が大きく低下することのないように振動板６ｃを広い面積として、さらに、振動板６ｃを支えるエッジ６ｄのコンプライアンスを大きくして振動板６ｃを十分に振動させコンデンサマイクロホン２に伝えられる音の音圧低下を防いでいる。   If the diaphragm 6c of the packing 6 blocks the water intrusion path, the sound intrusion path (sound path) is also blocked, and the sound pressure decreases. Therefore, the diaphragm 6c is widened so that the sound pressure does not greatly decrease, and the compliance of the edge 6d that supports the diaphragm 6c is increased to sufficiently vibrate the diaphragm 6c and transmitted to the condenser microphone 2. The sound pressure drop of the sound is prevented.

なお、実施例１と同様にコンデンサマイクロホン２前面の空間にフロントキャビティを形成するホルダを配置してもよい。パッキング６の振動板６ｃにより水の侵入が完全に防止できるため従来用いられていた防水布が不要となり、製造コストが安くなる。   As in the first embodiment, a holder for forming a front cavity may be disposed in the space in front of the condenser microphone 2. Since the infiltration of water can be completely prevented by the diaphragm 6c of the packing 6, the conventionally used waterproof cloth becomes unnecessary, and the manufacturing cost is reduced.

振動板６ｃの厚みおよびエッジ６ｄのコンプライアンスを調整することにより振動板６ｃの共振周波数を調整でき、コンデンサマイクロホン２が受ける音の周波数特性を調整することが可能となる。なお、エッジ６ｄの形状は図示のようなドーム形状でもよいが。波形でもよい。すなわち適度のフレキシブル性が確保されればその形状は限定されない。   The resonance frequency of the diaphragm 6c can be adjusted by adjusting the thickness of the diaphragm 6c and the compliance of the edge 6d, and the frequency characteristics of the sound received by the condenser microphone 2 can be adjusted. The shape of the edge 6d may be a dome shape as shown. It may be a waveform. That is, the shape is not limited as long as moderate flexibility is ensured.

この実施例２では実施例１の振動膜より厚い振動板が用いられているために強い水圧等により振動板が破れる恐れが少なくなる。   In the second embodiment, since a diaphragm thicker than the diaphragm of the first embodiment is used, the risk of the diaphragm being broken due to strong water pressure or the like is reduced.

実施例は以上のように構成されているが発明はこれに限られず、例えば、パッキングをゴムで形成する代わりに、合成ゴム等のゴム弾性を有する材料で作ることも可能である。   The embodiment is configured as described above, but the invention is not limited to this. For example, instead of forming the packing from rubber, the packing can be made of a material having rubber elasticity such as synthetic rubber.

この発明の実施例１である無線機器のマイクロホンの防水構造を示す断面図である。It is sectional drawing which shows the waterproof structure of the microphone of the radio | wireless apparatus which is Example 1 of this invention. この発明の実施例２である無線機器のマイクロホンの防水構造を示す断面図である。It is sectional drawing which shows the waterproof structure of the microphone of the radio | wireless apparatus which is Example 2 of this invention. 従来の無線機器のマイクロホンの防水構造の例を示す断面図である。It is sectional drawing which shows the example of the waterproof structure of the microphone of the conventional radio | wireless apparatus.

符号の説明Explanation of symbols

１ フロントケース、１ａ 音通過孔
２ コンデンサマイクロホン
３ メッシュシート
４ パッキング、４ａ、４ｂ リブ、４ｃ 振動膜、４ｄ 凸部
５ ホルダ、５ａ フロントキャビティ
６ パッキング、６ａ、６ｂ リブ、６ｃ 振動板、６ｄ エッジ
７ パッキング、７ａ、７ｂ リブ
８ 防水布 DESCRIPTION OF SYMBOLS 1 Front case, 1a Sound passage hole 2 Condenser microphone 3 Mesh sheet 4 Packing, 4a, 4b rib, 4c Vibration membrane, 4d Protruding part 5 Holder, 5a Front cavity 6 Packing, 6a, 6b Rib, 6c Diaphragm, 6d Edge 7 Packing, 7a, 7b Rib 8 Waterproof cloth

Claims (6)

ケースに設けられた音通過孔の周縁に圧接するように前記ケースとマイクロホンとの間に介装されるパッキングに前記音通過孔を塞ぐ振動膜を一体に形成したことを特徴とする無線機器内部に配置されるマイクロホンの防水構造。 An interior of a wireless device characterized in that a vibrating membrane for closing the sound passage hole is integrally formed in a packing interposed between the case and a microphone so as to be in pressure contact with a periphery of the sound passage hole provided in the case Microphone waterproof structure placed in the. 前記パッキングに前記ケースに設けられた音通過孔の周縁に圧接されるループ状のリブを設けた請求項１のマイクロホンの防水構造。 The waterproof structure for a microphone according to claim 1, wherein a loop-shaped rib is provided on the packing so as to be pressed against the periphery of a sound passage hole provided in the case. 前記振動膜と前記マイクロホンとの間にフロントキャビティを形成するホルダを配置した請求項１または２のマイクロホンの防水構造。 The waterproof structure for a microphone according to claim 1 or 2, wherein a holder for forming a front cavity is disposed between the vibrating membrane and the microphone. 前記振動膜に共振周波数を調整する凸部を形成した請求項１から３のいずれかに記載したマイクロホンの防水構造。 The waterproof structure for a microphone according to any one of claims 1 to 3, wherein a convex portion for adjusting a resonance frequency is formed on the vibration membrane. ケースに設けられた音通過孔の周縁に圧接するように前記ケースとマイクロホンとの間に介装されるパッキングに前記音通過孔を塞ぐ振動板をドーム形状のエッジを介して一体に形成したことを特徴とする無線機器内部に配置されるマイクロホンの防水構造。 A diaphragm for closing the sound passage hole is integrally formed through a dome-shaped edge in a packing interposed between the case and the microphone so as to come into pressure contact with the periphery of the sound passage hole provided in the case. A waterproof structure for microphones placed inside wireless devices. 前記音通過孔にメッシュシートを配置した請求項１から５のいずれかに記載したマイクロホンの防水構造。 The microphone waterproof structure according to any one of claims 1 to 5, wherein a mesh sheet is disposed in the sound passage hole.
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Cited By (9)

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JP2009004821A (en) * 2007-06-19 2009-01-08 Kenwood Corp Speaker attachment structure
JP2009005043A (en) * 2007-06-21 2009-01-08 Kenwood Corp Sound hole waterproofing/drainage structure of portable electronic device
JP2009071813A (en) * 2007-08-20 2009-04-02 Yamaha Corp Vibration transducer
JP4456656B1 (en) * 2009-07-13 2010-04-28 成高 鈴木 Waterproof microphone
KR20140049348A (en) * 2012-10-17 2014-04-25 엘지전자 주식회사 Mobile terminal
CN105227717A (en) * 2015-11-01 2016-01-06 毛献萍 Tilting diving tumbler waterproof mobile phone case
KR20160055504A (en) * 2014-11-10 2016-05-18 주식회사 아모그린텍 Waterproof acoustic apparatus
WO2016099181A1 (en) * 2014-12-19 2016-06-23 주식회사 아모그린텍 Hydrophobic and oleophobic membrane, and waterproof sound device using same
JP2017163175A (en) * 2016-03-07 2017-09-14 株式会社オーディオテクニカ Waterproof microphone

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JP2003244783A (en) * 2002-02-13 2003-08-29 Seiko Instruments Inc Water-proof electroacoustic transducer and mobile electronic equipment provided with the same

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JP2002016374A (en) * 2000-06-28 2002-01-18 Casio Comput Co Ltd Water proof structure of electronic apparatus
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009004821A (en) * 2007-06-19 2009-01-08 Kenwood Corp Speaker attachment structure
JP2009005043A (en) * 2007-06-21 2009-01-08 Kenwood Corp Sound hole waterproofing/drainage structure of portable electronic device
JP2009071813A (en) * 2007-08-20 2009-04-02 Yamaha Corp Vibration transducer
JP4456656B1 (en) * 2009-07-13 2010-04-28 成高 鈴木 Waterproof microphone
JP2011023786A (en) * 2009-07-13 2011-02-03 Masataka Suzuki Waterproof microphone
KR20140049348A (en) * 2012-10-17 2014-04-25 엘지전자 주식회사 Mobile terminal
KR101978211B1 (en) 2012-10-17 2019-05-14 엘지전자 주식회사 Mobile terminal
KR102201032B1 (en) * 2014-11-10 2021-01-11 주식회사 아모그린텍 Waterproof acoustic apparatus
KR20160055504A (en) * 2014-11-10 2016-05-18 주식회사 아모그린텍 Waterproof acoustic apparatus
CN107109740A (en) * 2014-12-19 2017-08-29 阿莫绿色技术有限公司 Hydrophobicity and oleophobic property film and utilize its Waterproof sound device
WO2016099181A1 (en) * 2014-12-19 2016-06-23 주식회사 아모그린텍 Hydrophobic and oleophobic membrane, and waterproof sound device using same
US10477305B2 (en) 2014-12-19 2019-11-12 Amogreentech Co., Ltd. Hydrophobic and oleophobic membrane, and waterproof sound device using same
CN105227717A (en) * 2015-11-01 2016-01-06 毛献萍 Tilting diving tumbler waterproof mobile phone case
JP2017163175A (en) * 2016-03-07 2017-09-14 株式会社オーディオテクニカ Waterproof microphone

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