JP2004304420A - Installation structure for acoustic device and communication terminal - Google Patents

Installation structure for acoustic device and communication terminal Download PDF

Info

Publication number
JP2004304420A
JP2004304420A JP2003093472A JP2003093472A JP2004304420A JP 2004304420 A JP2004304420 A JP 2004304420A JP 2003093472 A JP2003093472 A JP 2003093472A JP 2003093472 A JP2003093472 A JP 2003093472A JP 2004304420 A JP2004304420 A JP 2004304420A
Authority
JP
Japan
Prior art keywords
sound
case
filter
acoustic device
foreign matter
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.)
Pending
Application number
JP2003093472A
Other languages
Japanese (ja)
Inventor
Hitoshi Maruhashi
仁 丸橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2003093472A priority Critical patent/JP2004304420A/en
Publication of JP2004304420A publication Critical patent/JP2004304420A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an installation structure of an acoustic device and a communication terminal designed to block foreign matters passing through a dust/drip filter 11 to a diaphragm 16 of the acoustic device while keeping acoustic characteristics. <P>SOLUTION: The communication terminal includes any acoustic device among a radio section 2 for transmitting/receiving an audio signal, a microphone 3 for inputting transmitted audio, a receiver 4 for generating received audio, and a speaker 5 for making a notice sound; a case 1 having a sound hole 8 and having the acoustic device mounted inside to face the sound hole 8; the filter 11 attached to cover the sound hole 8 of the case 1; and a foreign matter adsorber 20 provided between the filter 11 and the acoustic device and made of at least one of an adhesive material, a moisture-absorbing material and a magnet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、異物が音響装置に到達するのを防止する音響装置の取付構造並びに該取付構造を有する通信端末に関する。
【0002】
【従来の技術】
図6は通信端末としての携帯電話機の正面斜視図、図7は背面斜視図である。図6及び図7において、携帯電話機のケース1内部には、音声信号を送受信する無線部2(図示せず)、無線部2を介して通話相手に送信する送話音声を入力するマイク3、無線部2から受信した通話相手の受話音声を再生するレシーバ4、着信を受けたときの着信音等を再生するスピーカ5、ダイヤル等を入力するキー6、ユーザがキー6から入力した内容等を表示する表示装置7が備えられている。
【0003】
そして、図8は、図6及び図7に示すマイク3、レシーバ4、又はスピーカ5等の一般的な音響装置のケース1への取付構造の断面図であり、ここではスピーカ5の取付構造について説明する。ケース1において、スピーカ5の取付位置は予め決められており、そこにはスピーカ5が再生する音声を効率よくケース1外部に放出させる放音孔8及びスピーカ5を支持する固定リブ9が設けられている。スピーカ5とケース1との間には緩衝部材からなるクッション10が設けられ、クッション10とケース1の間には防塵・防滴フィルタ11が放音孔8を覆うように設けられている。このように構成することで、防塵・防滴フィルタ11は、塵や水滴等が放音孔8からケース1内部へ侵入することを防いでいる。
【0004】
また、別の従来技術として、通信機器の本体ケース内部にマイクロホンが装着され、本体ケースにマイク孔を貫通形成したものにおいて、本体ケースの外面にマイク孔を外側から覆う通音性のカバーシートを着脱可能に設けたことで、外部からマイク孔に塵や水滴が侵入して溜まるのを防げ、マイクロホンに対して防塵、防滴を可能にしたものがある(例えば、特許文献1参照)。
【0005】
【特許文献1】
特開平9−130286号公報(第0009段〜第0011段、第1図)
【0006】
ここで、防塵・防滴フィルタ11のメッシュ開口寸法より小さな異物が防塵・防滴フィルタ11を通過してケース1内部に侵入した場合について説明する。
まず、スピーカ5の内部構成及び動作原理を図9により説明する。
図9はスピーカ5の外観図及び断面図であり、(a)は正面図、(b)は背面図、(c)は側面図、そして(d)はスピーカ5を(a)のA−Bで切断した断面図である。
図において、スピーカ5外形を形成しているフレーム12の内側に、磁性材料からなり底を有した円筒状のヨーク13が固定され、さらにヨーク13内側に磁石14が固着している。ヨーク13は磁石14の磁界を誘導し、磁石14とヨーク13とで環状磁気ギャップを備えた磁気回路を構成している。筒形のボイスコイル15は、フレーム12内部に取り付けられている振動板16に固定され、磁気回路に形成されている環状磁気ギャップ内に配設されている。また、ボイスコイル15は、プリント基板等と接触して他の回路と電気的に接続される端子18と結線されている。スピーカ5前面には振動板16を保護するためのプロテクタ17が取り付けられている。そして、端子18を介して、ボイスコイル15に交流電気信号が供給されると、ボイスコイル15が磁気回路による磁界の影響を受けて、振動板16と共に軸方向に振幅を行う。このとき、振動板16において空気密度に変化が起こり、音波が出力されてプロテクタ17に形成されている放音孔19からスピーカ5外部に放出される。
【0007】
スピーカ5はこのように構成されているため、図8において異物が防塵・防滴フィルタ11及び放音孔19を通過して振動板16まで達してしまうと、スピーカ5再生時に振動板16が異常振動を起こして異音を発したり、振動板16に過大な負荷がかかりボイスコイル15が断線し、音が出なくなったりしてしまうことがある。
また、防塵・防滴フィルタ11のメッシュ開口寸法を小さくすることで対策しようとすると、振動板16の振幅の妨げとなり十分な音圧を得ることができずに音響的特性が劣ってしまう。
【0008】
【発明が解決しようとする課題】
【0009】
従来の音響装置の取付構造においては、防塵・防滴フィルタ11によって、ある程度の大きさの塵や水滴等がケース1内部に侵入するのを防ぐことはできるが、防塵・防滴フィルタ11のメッシュ開口寸法より小さな異物が防塵・防滴フィルタ11を通過してケース1内部に侵入することを想定した防塵・防滴対策は施されておらず、音響特性が劣化したり、音響装置自体が故障してしまう等の問題点があった。
【0010】
この発明は上記のような問題点を解消するためになされたもので、音響的特性を保ちつつ、防塵・防滴フィルタ11を通過した異物が音響装置の振動板16にまで達しないようにした音響装置の取付構造並びに通信端末を得ることを目的とするものである。
【0011】
【課題を解決するための手段】
この発明の請求項1に係る音響装置の取付構造は、音響装置、音孔を有し該音孔と向かい合うように上記音響装置を内部に取り付けたケース、このケースの音孔を覆うように取り付けたフィルタ、及びこのフィルタと上記音響装置との間に設けられ、少なくとも粘着材、吸湿材、又は磁石の何れかで構成した異物吸着部を備えたものである。
【0012】
この発明の請求項3に係る音響装置の取付構造は、音響装置、音孔を有し該音孔と向かい合うように上記音響装置を内部に取り付けたケース、このケースの音孔を覆うように取り付けたフィルタ、上記音響装置と上記ケースとの間に取り付けたクッション、及び上記フィルタと上記音響装置との間に設けられ、異物を吸着する異物吸着部を備えたものである。
【0013】
この発明の請求項5に係る通信端末は、音声信号を送受信する無線部と、送話音声を入力するマイク、受話音声を発生するレシーバ、又は報知音を鳴動するスピーカの何れかの音響装置と、音孔を有し該音孔と向かい合うように上記音響装置を内部に取り付けたケースと、このケースの音孔を覆うように取り付けたフィルタと、このフィルタと上記音響装置との間に設けられ、少なくとも粘着材、吸湿材、又は磁石の何れかで構成した異物吸着部とを備えたものである。
【0014】
【発明の実施の形態】
実施の形態1.
図1は、この発明の実施の形態1〜3に係るスピーカ5の取付構造の分解模式図であり、図7のケース1を内側から見た図である。防塵・防滴フィルタ11とクッション10の間に異物吸着材20が設けられている。
【0015】
図2は、この発明の実施の形態1〜3に係るスピーカ5の取付構造を示す断面図である。図において、ケース1に設けられた固定リブ9は、スピーカ5をクッション10及び防塵・防滴フィルタ11とともに固定リブ9の爪に引っかけて支持している。
スピーカ5は、該スピーカ5の放音孔19とケース1の放音孔8とが対面する向きに設置され、スピーカ5から発生する音波を効率良くケース1から外部に放出するようにしている。防塵・防滴フィルタ11は、ナイロンやポリエステル等の目の細かい(25〜40μm程度)メッシュシートで構成されており、ケース1の放音孔8を覆うように設けて、外部からの塵、液体又は砂鉄など異物の侵入を防いでいる。リング状のクッション10は、衝撃吸収性が高く密閉性も高いポロンシート等で構成されており、スピーカ5とケース1との間にできる前気室21を確保している。この前気室21は、スピーカ5の放音孔19から出た音波をケース1の放音孔8に効率良く伝える役割をしている。また、クッション10がスピーカ5とケース1の隙間を埋めることで、スピーカ5の放音孔19から発生した音波がケース1の放音孔8から放出されずにスピーカ5とケース1の隙間からケース1内部へ音漏れしてしまうことを防止している。
【0016】
異物吸着材20は、粘着材料で構成されており、ケース1の放音孔8を塞ぐのを避けて、前気室21内部の防塵・防滴フィルタ11の上に接着剤22で貼り付けられている。
【0017】
スピーカ5をこのようにケース1に取り付けることにより、防塵・防滴フィルタ11のメッシュ開口寸法よりも小さな塵などの異物が、ケース1の放音孔8を経て防塵・防滴フィルタ11を通過したとしても、前気室21内に設けられた異物吸着材20がそれら異物を吸着するので、スピーカ5の振動板16にまで異物が到達するのを大幅に防ぐことができる。しかも、防塵・防滴フィルタ11のメッシュ開口寸法を小さくする必要がないので、スピーカ5から発生した音波が効率よくケース1外部に放出されて、音響的特性を保つことができる。
【0018】
また、異物吸着材20は、図3のようにスピーカ5前面のプロテクタ17に貼り付けてもよく、前気室21内部で、かつスピーカ5の放音孔19を塞がなければ、どの位置に配置してもよい。また、形状もリング状でなくてもよく、放音孔8及び放音孔19を塞がなければ、どのような形状でもよい。
【0019】
なお、この実施の形態1ではスピーカ5について説明したが、レシーバ4やマイク3等の他の音響装置にも同様に適用できる。
【0020】
実施の形態2.
実施の形態2では、異物吸着材20を実施の形態1の粘着材料に代えて、水分を吸収し易いスポンジや布等の吸湿材料を使用する。
この場合、液体状の異物や蒸気等が防塵・防滴フィルタ11を通過したとしても、前気室21内に設けられた異物吸着材20がそれら異物を吸収し、スピーカ5の振動板16にまで異物が到達するのを大幅に防ぐことができる。
【0021】
実施の形態3.
実施の形態3では、異物吸着材20を実施の形態1の粘着材料、又は実施の形態2の吸湿材料に代えて、磁石を使用する。
この場合、防塵・防滴フィルタ11のメッシュ開口寸法よりも小さな砂鉄など強磁性体の異物が防塵・防滴フィルタ11を通過したとしても、前気室21内に設けられた異物吸着材20がそれら異物を吸着し、スピーカ5の振動板16にまで異物が到達するのを大幅に防ぐことができる。特に、スピーカ5とレシーバ4は内部に磁石14を備えており強磁性体異物を引き寄せやすい性質を持っているので、異物吸着材20として磁石を使用したときの強磁性体異物の侵入防止に対する効果は大きい。
【0022】
実施の形態4.
図4は、この発明の実施の形態4に係るスピーカ5の取付構造を示す断面図である。図において、実施の形態1〜3で異物吸着材20として使用した粘着材23、吸湿材24、及び磁石25を複数箇所に配置している。
【0023】
このように構成することで、防塵・防滴フィルタ11のメッシュ開口寸法よりも小さな異物が防塵・防滴フィルタ11を通過したとしても、前気室21内に設けられた異物吸着材20である粘着材23、吸湿材24、及び磁石25がそれら異物を吸着し、スピーカ5の振動板16にまで異物が到達することを大幅に防ぐことができる。
【0024】
ここで、粘着材23、吸湿材24、及び磁石25は任意にそれぞれの配置を交換してもよく、図5のように、粘着材23、吸湿材24、及び磁石25をそれぞれ積層に配置してもよい。
【0025】
実施の形態5.
実施の形態5は、図8のクッション10を異物吸着材20で構成した場合である。つまり、クッション10を粘着材料、吸湿材料、又はゴム状磁石等の素材を使用した異物吸着クッション10aとしたものである。
【0026】
このように構成したことにより、実施の形態1〜3と同様に、異物が防塵・防滴フィルタ11を通過したとしても、ケース1とスピーカ5に挟まれた異物吸着クッション10aが異物を吸着し、スピーカ5の振動板16に異物が到達することを大幅に防ぐことができる。
【0027】
【発明の効果】
この発明に係る音響装置の取付構造並びに通信端末は、ケースの音孔と向かい合うようにケース内部に取り付けた音響装置と、ケースの音孔を覆うように取り付けたフィルタとの間に、異物を吸着する異物吸着部を設けたので、音響的特性を保ちつつ、音響装置の振動板に異物が到達することを大幅に防ぎ、音響装置の異音発生や故障を低減することができる効果がある。
【図面の簡単な説明】
【図1】この発明の実施の形態1〜3に係るスピーカ5の取付構造の分解模式図である。
【図2】この発明の実施の形態1〜3に係るスピーカ5の取付構造を示す断面図である。
【図3】この発明の実施の形態1〜3に係るスピーカ5の取付構造を示す断面図である。
【図4】この発明の実施の形態4に係るスピーカ5の取付構造を示す断面図である。
【図5】この発明の実施の形態4に係る別のスピーカ5の取付構造を示す断面図である。
【図6】従来及びこの発明に係る携帯電話機の正面斜視図である。
【図7】従来及びこの発明に係る携帯電話機の背面斜視図である。
【図8】従来及びこの発明の実施の形態5に係る音響装置の取付構造の断面図である。
【図9】従来及びこの発明に係るスピーカ5の外観図及び断面図である。
【符号の説明】
1 ケース
2 無線部
3 マイク
4 レシーバ
5 スピーカ
8 放音孔
10 クッション
11 防塵・防滴フィルタ
20 異物吸着材
23 粘着材
24 吸湿材
25 磁石
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sound device mounting structure for preventing a foreign object from reaching an acoustic device, and a communication terminal having the mounting structure.
[0002]
[Prior art]
FIG. 6 is a front perspective view of a mobile phone as a communication terminal, and FIG. 7 is a rear perspective view. 6 and 7, in a case 1 of a mobile phone, a radio unit 2 (not shown) for transmitting and receiving a voice signal, a microphone 3 for inputting a transmission voice to be transmitted to a communication partner via the radio unit 2, A receiver 4 that reproduces the voice of the other party received from the wireless unit 2, a speaker 5 that reproduces a ring tone when an incoming call is received, a key 6 for inputting a dial or the like, a content input by the user from the key 6, etc. A display device 7 for displaying is provided.
[0003]
FIG. 8 is a cross-sectional view of a mounting structure of a general acoustic device such as the microphone 3, the receiver 4, or the speaker 5 shown in FIGS. 6 and 7 to the case 1. Here, the mounting structure of the speaker 5 is described. explain. In the case 1, the mounting position of the speaker 5 is predetermined, and a sound emitting hole 8 for efficiently emitting the sound reproduced by the speaker 5 to the outside of the case 1 and a fixing rib 9 for supporting the speaker 5 are provided. ing. A cushion 10 made of a cushioning member is provided between the speaker 5 and the case 1, and a dustproof / dripproof filter 11 is provided between the cushion 10 and the case 1 so as to cover the sound emission hole 8. With this configuration, the dustproof / dripproof filter 11 prevents dust, waterdrops, and the like from entering the inside of the case 1 through the sound emission hole 8.
[0004]
Further, as another conventional technique, a microphone is mounted inside a main body case of a communication device and a microphone hole is formed through the main body case, and a sound-permeable cover sheet that covers the microphone hole from the outside is provided on an outer surface of the main body case. There is one that is detachably provided to prevent dust and water droplets from entering and accumulating in a microphone hole from the outside, thereby making it possible to prevent dust and drip from a microphone (for example, see Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. Hei 9-130286 (No. 0009 to No. 0011, FIG. 1)
[0006]
Here, a case where a foreign matter smaller than the mesh opening size of the dustproof / drip-proof filter 11 passes through the dustproof / drip-proof filter 11 and enters the inside of the case 1 will be described.
First, the internal configuration and operation principle of the speaker 5 will be described with reference to FIG.
9A and 9B are an external view and a cross-sectional view of the speaker 5, in which FIG. 9A is a front view, FIG. 9B is a rear view, FIG. 9C is a side view, and FIG. It is sectional drawing cut | disconnected by.
In the figure, a cylindrical yoke 13 made of a magnetic material and having a bottom is fixed inside a frame 12 forming the external shape of the speaker 5, and a magnet 14 is further fixed inside the yoke 13. The yoke 13 induces the magnetic field of the magnet 14, and the magnet 14 and the yoke 13 constitute a magnetic circuit having an annular magnetic gap. The cylindrical voice coil 15 is fixed to a diaphragm 16 mounted inside the frame 12, and is disposed in an annular magnetic gap formed in a magnetic circuit. The voice coil 15 is connected to a terminal 18 which is in contact with a printed circuit board or the like and is electrically connected to another circuit. A protector 17 for protecting the diaphragm 16 is attached to the front of the speaker 5. Then, when an AC electric signal is supplied to the voice coil 15 via the terminal 18, the voice coil 15 is affected by the magnetic field of the magnetic circuit, and performs an amplitude in the axial direction together with the diaphragm 16. At this time, a change in the air density occurs in the diaphragm 16, and a sound wave is output and emitted from the sound emission hole 19 formed in the protector 17 to the outside of the speaker 5.
[0007]
Since the speaker 5 is configured as described above, if a foreign object passes through the dustproof / dripproof filter 11 and the sound emission hole 19 and reaches the diaphragm 16 in FIG. Occasionally, vibration may generate abnormal noise, or an excessive load may be applied to the diaphragm 16, the voice coil 15 may be disconnected, and sound may not be output.
If measures are taken to reduce the mesh opening size of the dust-proof / drip-proof filter 11, the amplitude of the diaphragm 16 is hindered, and a sufficient sound pressure cannot be obtained, resulting in poor acoustic characteristics.
[0008]
[Problems to be solved by the invention]
[0009]
In the conventional sound device mounting structure, the dust-proof / drip-proof filter 11 can prevent dust and water droplets of a certain size from entering the case 1. No dust-proof / drip-proof measures have been taken assuming that foreign matter smaller than the opening size passes through the dust-proof / drip-proof filter 11 and enters the inside of the case 1, so that the acoustic characteristics are deteriorated or the sound device itself is damaged. There were problems such as doing.
[0010]
The present invention has been made in order to solve the above-mentioned problems, and it has been made to prevent foreign substances passing through the dustproof / dripproof filter 11 from reaching the diaphragm 16 of the acoustic device while maintaining the acoustic characteristics. It is an object of the present invention to obtain a mounting structure of a sound device and a communication terminal.
[0011]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a sound device mounting structure including a sound device, a case having a sound hole, and the sound device being mounted inside the sound device so as to face the sound hole, and being mounted so as to cover the sound hole of the case. And a filter provided between the filter and the acoustic device, and provided with a foreign matter adsorbing portion made of at least one of an adhesive, a hygroscopic material, and a magnet.
[0012]
According to a third aspect of the present invention, there is provided an acoustic device mounting structure including a sound device, a case having a sound hole, and the sound device mounted inside the sound device so as to face the sound hole, and a sound hole mounted on the case. A filter, a cushion attached between the acoustic device and the case, and a foreign matter adsorbing portion that is provided between the filter and the acoustic device and adsorbs foreign matter.
[0013]
The communication terminal according to claim 5 of the present invention includes a wireless unit that transmits and receives an audio signal, and a microphone that inputs a transmission voice, a receiver that generates a reception voice, or a speaker that emits a notification sound. A case having a sound hole and the sound device mounted therein so as to face the sound hole, a filter mounted to cover the sound hole of the case, and a filter provided between the filter and the sound device. , At least a foreign substance adsorbing portion composed of any one of an adhesive, a hygroscopic material, and a magnet.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is an exploded schematic view of the mounting structure of the speaker 5 according to Embodiments 1 to 3 of the present invention, and is a view of the case 1 of FIG. 7 as viewed from the inside. A foreign matter adsorbing material 20 is provided between the dustproof / drip-proof filter 11 and the cushion 10.
[0015]
FIG. 2 is a cross-sectional view illustrating a mounting structure of speaker 5 according to Embodiments 1 to 3 of the present invention. In the figure, a fixing rib 9 provided on a case 1 supports the speaker 5 together with a cushion 10 and a dust-proof / drip-proof filter 11 by hooking on a claw of the fixing rib 9.
The speaker 5 is installed so that the sound emission hole 19 of the speaker 5 and the sound emission hole 8 of the case 1 face each other, so that sound waves generated from the speaker 5 are efficiently emitted from the case 1 to the outside. The dustproof / dripproof filter 11 is made of a fine mesh sheet (about 25 to 40 μm) such as nylon or polyester, and is provided so as to cover the sound emission hole 8 of the case 1. Or it prevents foreign substances such as iron sand from entering. The ring-shaped cushion 10 is made of a polon sheet or the like having high shock absorption and high sealing properties, and secures a front air chamber 21 formed between the speaker 5 and the case 1. The front air chamber 21 plays a role in efficiently transmitting the sound wave emitted from the sound emission hole 19 of the speaker 5 to the sound emission hole 8 of the case 1. In addition, the cushion 10 fills the gap between the speaker 5 and the case 1, so that the sound wave generated from the sound emission hole 19 of the speaker 5 is not emitted from the sound emission hole 8 of the case 1, 1 prevents sound from leaking into the interior.
[0016]
The foreign matter adsorbing material 20 is made of an adhesive material, and is adhered to the dustproof / dripproof filter 11 inside the front air chamber 21 with an adhesive 22 so as not to block the sound emission hole 8 of the case 1. ing.
[0017]
By attaching the speaker 5 to the case 1 in this manner, foreign matter such as dust smaller than the mesh opening size of the dust-proof / drip-proof filter 11 passed through the dust-proof / drip-proof filter 11 through the sound emission hole 8 of the case 1. However, since the foreign matter adsorbing material 20 provided in the front air chamber 21 absorbs the foreign matter, it is possible to largely prevent the foreign matter from reaching the diaphragm 16 of the speaker 5. Moreover, since it is not necessary to reduce the mesh opening size of the dust-proof / drip-proof filter 11, sound waves generated from the speaker 5 are efficiently emitted to the outside of the case 1 and acoustic characteristics can be maintained.
[0018]
Further, the foreign matter adsorbing material 20 may be attached to the protector 17 on the front face of the speaker 5 as shown in FIG. 3, and at any position inside the front air chamber 21 and unless the sound emission hole 19 of the speaker 5 is closed. It may be arranged. Further, the shape does not have to be a ring shape, and any shape may be used as long as the sound emission holes 8 and 19 are not closed.
[0019]
Although the speaker 5 has been described in the first embodiment, the present invention can be similarly applied to other acoustic devices such as the receiver 4 and the microphone 3.
[0020]
Embodiment 2 FIG.
In the second embodiment, a foreign material adsorbing material 20 is replaced with the adhesive material of the first embodiment, and a moisture absorbing material such as a sponge or a cloth which easily absorbs moisture is used.
In this case, even if liquid foreign matter, vapor, or the like passes through the dustproof / drip-proof filter 11, the foreign matter adsorbing material 20 provided in the front air chamber 21 absorbs the foreign matter and causes the diaphragm 16 of the speaker 5 to absorb the foreign matter. It is possible to greatly prevent foreign matter from reaching to the maximum.
[0021]
Embodiment 3 FIG.
In the third embodiment, a magnet is used in place of the adhesive material of the first embodiment or the moisture absorbing material of the second embodiment for the foreign matter adsorbent 20.
In this case, even if a ferromagnetic foreign substance such as iron sand smaller than the mesh opening size of the dust-proof / drip-proof filter 11 passes through the dust-proof / drip-proof filter 11, the foreign matter adsorbing material 20 provided in the front air chamber 21 is not removed. By adsorbing these foreign substances, it is possible to largely prevent the foreign substances from reaching the diaphragm 16 of the speaker 5. In particular, since the speaker 5 and the receiver 4 have the magnet 14 inside and have a property of easily attracting ferromagnetic foreign matter, the effect of preventing the invasion of ferromagnetic foreign matter when the magnet is used as the foreign matter adsorbing material 20. Is big.
[0022]
Embodiment 4 FIG.
FIG. 4 is a cross-sectional view showing a mounting structure of speaker 5 according to Embodiment 4 of the present invention. In the figure, the adhesive 23, the hygroscopic material 24, and the magnet 25 used as the foreign matter absorbing material 20 in the first to third embodiments are arranged at a plurality of locations.
[0023]
With this configuration, even if a foreign substance smaller than the mesh opening size of the dustproof / drip-proof filter 11 passes through the dustproof / drip-proof filter 11, the foreign matter adsorbent 20 provided in the front air chamber 21 is provided. The adhesive 23, the moisture absorbing material 24, and the magnet 25 adsorb the foreign matter, and can greatly prevent the foreign matter from reaching the diaphragm 16 of the speaker 5.
[0024]
Here, the arrangement of the adhesive 23, the hygroscopic material 24, and the magnet 25 may be arbitrarily exchanged, and as shown in FIG. 5, the adhesive 23, the hygroscopic material 24, and the magnet 25 are respectively arranged in a stack. You may.
[0025]
Embodiment 5 FIG.
In the fifth embodiment, the cushion 10 shown in FIG. That is, the cushion 10 is a foreign matter absorbing cushion 10a using a material such as an adhesive material, a moisture absorbing material, or a rubber magnet.
[0026]
With this configuration, as in the first to third embodiments, even if foreign matter passes through the dustproof / drip-proof filter 11, the foreign matter absorbing cushion 10a sandwiched between the case 1 and the speaker 5 absorbs the foreign matter. In addition, it is possible to largely prevent foreign matter from reaching the diaphragm 16 of the speaker 5.
[0027]
【The invention's effect】
The mounting structure of the acoustic device and the communication terminal according to the present invention adsorb foreign matter between the acoustic device mounted inside the case so as to face the sound hole of the case and the filter mounted so as to cover the sound hole of the case. As a result, since the foreign matter adsorbing portion is provided, it is possible to greatly prevent the foreign matter from reaching the diaphragm of the acoustic device while maintaining the acoustic characteristics, and to reduce the occurrence of abnormal noise and the failure of the acoustic device.
[Brief description of the drawings]
FIG. 1 is an exploded schematic view of a mounting structure of a speaker 5 according to Embodiments 1 to 3 of the present invention.
FIG. 2 is a sectional view showing a mounting structure of the speaker 5 according to the first to third embodiments of the present invention.
FIG. 3 is a sectional view showing a mounting structure of the speaker 5 according to the first to third embodiments of the present invention.
FIG. 4 is a sectional view showing a mounting structure of a speaker 5 according to Embodiment 4 of the present invention.
FIG. 5 is a sectional view showing a mounting structure of another speaker 5 according to Embodiment 4 of the present invention.
FIG. 6 is a front perspective view of a mobile phone according to the related art and the present invention.
FIG. 7 is a rear perspective view of a mobile phone according to the related art and the present invention.
FIG. 8 is a cross-sectional view of a mounting structure of an acoustic device according to a related art and a fifth embodiment of the present invention.
FIG. 9 is an external view and a sectional view of a speaker 5 according to the related art and the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 case 2 wireless unit 3 microphone 4 receiver 5 speaker 8 sound emission hole 10 cushion 11 dustproof / dripproof filter 20 foreign matter adsorbent 23 adhesive 24 moisture absorbent 25 magnet

Claims (5)

音響装置、音孔を有し該音孔と向かい合うように上記音響装置を内部に取り付けたケース、このケースの音孔を覆うように取り付けたフィルタ、及びこのフィルタと上記音響装置との間に設けられ、少なくとも粘着材、吸湿材、又は磁石の何れかで構成した異物吸着部を備えたことを特徴とする音響装置の取付構造。A sound device, a case having a sound hole and having the sound device mounted therein so as to face the sound hole, a filter mounted so as to cover the sound hole of the case, and a filter provided between the filter and the sound device A mounting structure for an acoustic device, comprising: a foreign substance adsorbing portion formed of at least one of an adhesive material, a hygroscopic material, and a magnet. 異物吸着部は、音響装置とケースとの間に取り付けたクッションであることを特徴とする請求項1記載の音響装置の取付構造。2. The mounting structure for an acoustic device according to claim 1, wherein the foreign matter absorbing portion is a cushion attached between the acoustic device and the case. 音響装置、音孔を有し該音孔と向かい合うように上記音響装置を内部に取り付けたケース、このケースの音孔を覆うように取り付けたフィルタ、上記音響装置と上記ケースとの間に取り付けたクッション、及び上記フィルタと上記音響装置との間に設けられ、異物を吸着する異物吸着部を備えたことを特徴とする音響装置の取付構造。A sound device, a case having a sound hole and having the sound device mounted therein so as to face the sound hole, a filter mounted so as to cover the sound hole of the case, and a filter mounted between the sound device and the case A mounting structure for an acoustic device, comprising: a cushion; and a foreign matter absorbing portion provided between the filter and the acoustic device for absorbing foreign matter. 異物吸着部を、少なくとも粘着材、吸湿材、又は磁石の何れかで構成したことを特徴とする請求項3記載の音響装置の取付構造。4. The mounting structure for an acoustic device according to claim 3, wherein the foreign matter absorbing portion is formed of at least one of an adhesive, a moisture absorbing material, and a magnet. 音声信号を送受信する無線部と、送話音声を入力するマイク、受話音声を発生するレシーバ、又は報知音を鳴動するスピーカの何れかの音響装置と、音孔を有し該音孔と向かい合うように上記音響装置を内部に取り付けたケースと、このケースの音孔を覆うように取り付けたフィルタと、このフィルタと上記音響装置との間に設けられ、少なくとも粘着材、吸湿材、又は磁石の何れかで構成した異物吸着部とを備えたことを特徴とする通信端末。A wireless unit for transmitting and receiving a voice signal, a microphone for inputting a transmission voice, a receiver for generating a reception voice, or an audio device such as a speaker for sounding an annunciation sound, and having a sound hole and facing the sound hole. A case in which the sound device is mounted inside, a filter mounted so as to cover a sound hole of the case, and a filter provided between the filter and the sound device, and at least one of an adhesive, a moisture absorbing material, and a magnet. A communication terminal comprising:
JP2003093472A 2003-03-31 2003-03-31 Installation structure for acoustic device and communication terminal Pending JP2004304420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003093472A JP2004304420A (en) 2003-03-31 2003-03-31 Installation structure for acoustic device and communication terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003093472A JP2004304420A (en) 2003-03-31 2003-03-31 Installation structure for acoustic device and communication terminal

Publications (1)

Publication Number Publication Date
JP2004304420A true JP2004304420A (en) 2004-10-28

Family

ID=33406261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003093472A Pending JP2004304420A (en) 2003-03-31 2003-03-31 Installation structure for acoustic device and communication terminal

Country Status (1)

Country Link
JP (1) JP2004304420A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006311315A (en) * 2005-04-28 2006-11-09 Fujitsu Ltd Sounding body unit
JP2008005423A (en) * 2006-06-26 2008-01-10 Pioneer Electronic Corp Speech communication terminal
WO2008090647A1 (en) * 2007-01-24 2008-07-31 Panasonic Corporation Speaker and apparatus employing it
JP2010021933A (en) * 2008-07-14 2010-01-28 Sounddesign Japan Inc Sound distribution device
JP2010109849A (en) * 2008-10-31 2010-05-13 Fujitsu Ltd Electronic equipment
JP2010273242A (en) * 2009-05-25 2010-12-02 Audio Technica Corp Unidirectional condenser microphone unit
JP2011188191A (en) * 2010-03-08 2011-09-22 Nec Corp Sound output device
US8036411B2 (en) 2005-08-23 2011-10-11 Sharp Kabushiki Kaisha Portable communication tool
WO2013045749A1 (en) 2011-09-29 2013-04-04 Nokia Corporation Dust protection of sound transducer
JP2013239788A (en) * 2012-05-11 2013-11-28 Sharp Corp Portable terminal
CN103945314A (en) * 2014-04-24 2014-07-23 歌尔声学股份有限公司 Microphone
JP2018101846A (en) * 2016-12-19 2018-06-28 株式会社デンソー Mounting structure and mounting method for speaker
JP2021532702A (en) * 2018-07-26 2021-11-25 維沃移動通信有限公司Vivo Mobile Communication Co., Ltd. Pronunciation structure and terminal

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006311315A (en) * 2005-04-28 2006-11-09 Fujitsu Ltd Sounding body unit
US8036411B2 (en) 2005-08-23 2011-10-11 Sharp Kabushiki Kaisha Portable communication tool
JP2008005423A (en) * 2006-06-26 2008-01-10 Pioneer Electronic Corp Speech communication terminal
JP4637060B2 (en) * 2006-06-26 2011-02-23 パイオニア株式会社 Call terminal
WO2008090647A1 (en) * 2007-01-24 2008-07-31 Panasonic Corporation Speaker and apparatus employing it
JP2008182391A (en) * 2007-01-24 2008-08-07 Matsushita Electric Ind Co Ltd Speaker and mobile device using the same
JP4561751B2 (en) * 2007-01-24 2010-10-13 パナソニック株式会社 Speaker and portable device using it
JP2010021933A (en) * 2008-07-14 2010-01-28 Sounddesign Japan Inc Sound distribution device
JP4592788B2 (en) * 2008-07-14 2010-12-08 有限会社サウンドデザイン・ジャパン Sound distributor
JP2010109849A (en) * 2008-10-31 2010-05-13 Fujitsu Ltd Electronic equipment
JP2010273242A (en) * 2009-05-25 2010-12-02 Audio Technica Corp Unidirectional condenser microphone unit
JP2011188191A (en) * 2010-03-08 2011-09-22 Nec Corp Sound output device
WO2013045749A1 (en) 2011-09-29 2013-04-04 Nokia Corporation Dust protection of sound transducer
CN103931210A (en) * 2011-09-29 2014-07-16 诺基亚公司 Dust protection of sound transducer
EP2761889A4 (en) * 2011-09-29 2015-07-08 Nokia Corp Dust protection of sound transducer
US9473838B2 (en) 2011-09-29 2016-10-18 Nokia Technologies Oy Dust protection of sound transducer
EP3139625A1 (en) * 2011-09-29 2017-03-08 Nokia Technologies OY Dust protection of sound transducer
CN103931210B (en) * 2011-09-29 2017-05-17 诺基亚技术有限公司 Dust protection of sound transducer
JP2013239788A (en) * 2012-05-11 2013-11-28 Sharp Corp Portable terminal
CN103945314A (en) * 2014-04-24 2014-07-23 歌尔声学股份有限公司 Microphone
CN103945314B (en) * 2014-04-24 2018-07-06 歌尔股份有限公司 Microphone
JP2018101846A (en) * 2016-12-19 2018-06-28 株式会社デンソー Mounting structure and mounting method for speaker
JP2021532702A (en) * 2018-07-26 2021-11-25 維沃移動通信有限公司Vivo Mobile Communication Co., Ltd. Pronunciation structure and terminal

Similar Documents

Publication Publication Date Title
JP4307446B2 (en) Mobile phone using bone conduction device
KR101726838B1 (en) Double-vibrating-diaphragm loudspeaker module
US6738487B1 (en) Earphone
JP2004304420A (en) Installation structure for acoustic device and communication terminal
US20110048844A1 (en) Acoustic material
WO2006011604A1 (en) Loudspeaker system, mobile terminal device, an electronic device
JPWO2002069669A1 (en) Speaker
CN102187688A (en) Flat diaphragm loudspeaker
JPWO2008004568A1 (en) Microphone device
JP2011188191A (en) Sound output device
JP6634354B2 (en) Hands-free communication device for emergency call system
US9807210B2 (en) Cordless phone
WO2020020129A1 (en) Sound generation structure, and terminal
US20110158448A1 (en) Speakerbox
JP4087784B2 (en) Microphone
JP2006050309A (en) Holding structure of piezoelectric speaker
KR101468631B1 (en) Vibrational transducer and haptic display apparatus using the same
JP3773760B2 (en) Speaker device and portable device
JPWO2008041328A1 (en) Portable device, acoustic component placement method, and acoustic component assembly
JPH10210121A (en) Mobile communication equipment
JP4561751B2 (en) Speaker and portable device using it
JP2010062888A (en) Headphone and method of preventing deformation of diaphragm
JP5399391B2 (en) Noise canceling headphones
JP2008167130A (en) Mounting structure of microphone for radio equipment
JP2004180073A (en) Speaker fitting structure for mobile electronic equipment