JP2003305409A - Thin electromagnetic acoustic transducer for mobile communication apparatus and method for using the same - Google Patents

Thin electromagnetic acoustic transducer for mobile communication apparatus and method for using the same

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Publication number
JP2003305409A
JP2003305409A JP2002110863A JP2002110863A JP2003305409A JP 2003305409 A JP2003305409 A JP 2003305409A JP 2002110863 A JP2002110863 A JP 2002110863A JP 2002110863 A JP2002110863 A JP 2002110863A JP 2003305409 A JP2003305409 A JP 2003305409A
Authority
JP
Japan
Prior art keywords
mobile communication
acoustic transducer
magnetic
communication device
electromagnetic acoustic
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
JP2002110863A
Other languages
Japanese (ja)
Inventor
Tadao Yamaguchi
忠男 山口
Toshiyuki Muto
敏之 武藤
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.)
Tokyo Parts Ind Co Ltd
Original Assignee
Tokyo Parts Ind Co Ltd
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 Tokyo Parts Ind Co Ltd filed Critical Tokyo Parts Ind Co Ltd
Priority to JP2002110863A priority Critical patent/JP2003305409A/en
Publication of JP2003305409A publication Critical patent/JP2003305409A/en
Pending legal-status Critical Current

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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent attenuation of vibrations with a thin type by exercising ingenuity in the shape of an exciting coil and the arrangement and configuration of a magnetism generating body. <P>SOLUTION: The electromagnetic acoustic transducer is provided with a thin sounding plate (1) disposed within the magnetic field of a magnetism generating body and supported at its outer peripheral part by a portion of a housing (H) and the exciting coil (2) formed of printed wiring at this sounding plate and is provided with the magnetism generating body (4) disposed to face the sounding plate across a gap and a planar elastic body (6) placed on the magnetism generating body across a weight (4a). The outer peripheral part of the planar elastic body is supported at a base (3) which is a portion of the housing, by which the planar elastic body is supported overhead in the air to move vertically. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、移動体通信装置の
報知手段等に用いられる電磁音響変換器の改良に係り、
特に超薄型な移動体通信装置用として好適なものに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an electromagnetic acoustic transducer used as a notification means of a mobile communication device,
Particularly, it relates to a device suitable for an ultra-thin mobile communication device.

【0002】[0002]

【従来の技術】近年移動体通信技術が益々発展し、移動
体装置の軽量薄型化に拍車がかけられてきている。これ
に対応し報知手段として振動モータの他に最近ではリニ
アモータの技術を応用した電磁発音体からなる報知手段
(マグネッチクブザー)、あるいは低周波信号を入力す
ることによって振動機能を持たせた無音報知手段を備え
たものが知られるようになってきた。このような電磁音
響変換器は、一般的にマグネッチクブザー型では、図9
に示すようなものがある。すなわち、樹脂製ケースKの
中央に磁極部材Jを固定し、その周囲に円筒ソレノイド
型励磁コイルCを配置し、さらにその周囲に上下方向に
着磁した界磁マグネットMを配置し、前記磁極部材Jに
対向してアーマチュア部材Aを固着した薄いパーマロイ
からなるダイアフラムDを前記ケースKに配着し、カバ
ーVで蓋したものである。
2. Description of the Related Art In recent years, mobile communication technology has been developed more and more, and the weight and thickness of mobile devices have been accelerated. In response to this, in addition to the vibration motor as the notification means, recently, a notification means (magnetic buzzer) composed of an electromagnetic sounding body to which the technology of a linear motor is applied, or a silent function having a vibration function by inputting a low frequency signal Those equipped with notification means have become known. Such an electromagnetic acoustic transducer is generally shown in FIG.
There is something like. That is, a magnetic pole member J is fixed in the center of a resin case K, a cylindrical solenoid type excitation coil C is arranged around the magnetic pole member J, and a vertically magnetized field magnet M is arranged around the magnetic pole member J. A diaphragm D made of a thin permalloy having an armature member A fixedly opposed to J is attached to the case K and covered with a cover V.

【0003】最近では移動体通信装置は発音による報知
手段の騒音の問題より振動によるサイレントコール手段
が多用されるようになってきた。この振動発生手段とし
ては、円筒型直流モータの出力軸に偏心ウエイトを取り
付けたものか、もしくはロータ自体を偏心させた扁平型
コアレス振動モータが用いられている。モータを用いる
のは振幅が比較的大きくとれ、遠心力を利用するだけで
効率もよいためである。ところで、最近においてはこの
ような振動モータに変わって実願平3−44627号の
図1に示すような電磁型変換器によって音と振動の両方
を得るようにしたものが提案されている。すなわち、前
述のような磁極部材をスプリング体の中心部に支架する
ことによって可動磁極部材にし、その周囲に配した励磁
コイルに低周波、たとえば100Hzの全波もしくは半
波電流を与えることによって可動磁極部材を図において
上下動させて振動を得るようにしたものである。このよ
うな電磁型変換器は比較的高い周波数の交流、たとえば
励磁コイルに2ないし3KHzの電流を与えることによ
ってアーマチュア部材を固着したダイアフラムを振動さ
せてブザー音を発生させるようになっているが、2ない
し3KHzでは、可動磁極部材は振動体として機能しな
いようになっている。このように励磁コイルに与える電
流の周期に応じて発音と振動の両方の機能を得ることが
できる。また、特開平10−117472号に開示され
たように発音体を薄いフイルムにし、このフイルムに配
した円筒型励磁コイルを磁気回路内に配し、この円筒型
励磁コイルに電気信号を与え、径方向に配した界磁マグ
ネットの影響を受けて発音と振動を発生させるようにし
たものがある。しかしながら、このような巻線型励磁コ
イルでは、コイル自体が振動するため端末の断線の問題
が付いて回るのでこの端末の処理が複雑となる。
Recently, in mobile communication devices, silent call means based on vibration has come to be frequently used due to the problem of noise of the notification means based on sound. As this vibration generating means, an eccentric weight is attached to the output shaft of a cylindrical DC motor, or a flat coreless vibration motor in which the rotor itself is eccentric is used. The motor is used because the amplitude is relatively large and the efficiency is high only by using the centrifugal force. By the way, recently, in place of such a vibration motor, there has been proposed one in which both sound and vibration are obtained by an electromagnetic converter as shown in FIG. 1 of Japanese Patent Application No. 3-44627. That is, a movable magnetic pole member is provided by supporting the magnetic pole member as described above at the center of a spring body, and a low-frequency, for example, 100 Hz full-wave or half-wave current is applied to an exciting coil arranged around the magnetic pole member to move the movable magnetic pole. The member is moved up and down in the figure to obtain vibration. Such an electromagnetic transducer is designed to generate a buzzer sound by vibrating a diaphragm to which an armature member is fixed by applying an alternating current having a relatively high frequency, for example, a current of 2 to 3 KHz to an exciting coil. At 2 to 3 KHz, the movable magnetic pole member does not function as a vibrating body. In this way, both sound generation and vibration functions can be obtained according to the cycle of the current applied to the exciting coil. Further, as disclosed in Japanese Patent Application Laid-Open No. 10-117472, the sounding body is made into a thin film, the cylindrical exciting coil arranged in this film is arranged in a magnetic circuit, and an electric signal is given to this cylindrical exciting coil to obtain a diameter. There is a device that generates sound and vibration under the influence of a field magnet arranged in a certain direction. However, in such a wound-type excitation coil, the coil itself vibrates, which causes a problem of disconnection of the terminal, which complicates the processing of the terminal.

【0004】[0004]

【発明が解決しようとする課題】
しかしも、上記のように構成された従来の電磁音
響変換器は、各実施の形態図から判断されるように、励
磁コイルが円筒型ソレノイドとなっていて径方向空隙型
なので、全体的な姿勢が小型なものでも4〜5mm程度
と厚くなってしまい、機器側で使いにくい、すなわち、
利便性が悪いという問題点がある。
[Problems to be Solved by the Invention]
However, in the conventional electromagnetic acoustic transducer configured as described above, the exciting coil is a cylindrical solenoid and is a radial air gap type, as can be judged from the respective embodiments, so that the overall attitude is improved. Even if it is small, it will be thick at around 4-5 mm, which makes it difficult to use on the device side.
There is a problem that it is not convenient.

【0005】そこで、この発明は、前述の欠点を励磁コ
イルの形状と磁気発生体の配置に工夫を凝らして解決し
たもので、薄型な断線の問題のない移動体通信用電磁音
響変換器を提供するものである。
Therefore, the present invention solves the above-mentioned drawbacks by devising the shape of the exciting coil and the arrangement of the magnetic generators, and provides a thin electromagnetic acoustic transducer for mobile communication without the problem of disconnection. To do.

【0006】[0006]

【課題を解決するための手段】上記の課題を解決するに
は、請求項1に記載の発明のように、磁気発生体の磁界
内に配され外周部がハウジングに支持された薄い発音板
と、この発音板に配した励磁コイルと、前記発音板の外
周部を支持したハウジングとを備えた電磁音響変換器に
おいて、前記励磁コイルは、印刷配線で発音板に形成
し、前記ハウジングの中心に配した前記磁気発生体と空
隙を介して対向させたことにより達成できる。このよう
にすれば、励磁コイルに所定の電気信号を通電すること
によりこの励磁コイルは印刷配線で円盤形ソレノイドを
構成しているので内部に磁界が発生し、対向させた磁気
発生体の影響を受け、発音板が上下振動して音を発生さ
せるが、励磁コイルがほとんど厚みを考慮しなくて済む
ので低姿勢な電磁音響変換器に構成でき、印刷配線で形
成しているので断線のおそれがない。具体的な解決手段
は、請求項2に記載の発明のように、前記印刷配線で形
成した励磁コイルは、磁性メッキされているのがよい。
このようにすれば、励磁コイルは無通電時に磁気発生体
に吸引させておくことができる。請求項3、4に記載の
発明のように、前記発音板を間にして前記磁気発生体の
磁界を受ける磁性体を配したり、前記磁性体はハウジン
グで構成されたものがよい。このようにすれば、磁気発
生体から発生する空隙磁束密度を増加させることができ
る。
In order to solve the above-mentioned problems, according to the invention as set forth in claim 1, a thin sounding plate arranged in a magnetic field of a magnetic generator and having an outer peripheral portion supported by a housing. In an electromagnetic acoustic transducer including an exciting coil arranged on the sounding plate and a housing supporting an outer peripheral portion of the sounding plate, the exciting coil is formed on the sounding plate by printed wiring, and the center of the housing is provided. This can be achieved by facing the arranged magnetic generator with a gap. With this configuration, when a predetermined electric signal is applied to the exciting coil, the exciting coil forms a disk-shaped solenoid with the printed wiring, so that a magnetic field is generated inside, and the influence of the facing magnetic generator is reduced. The receiving and sounding plates vibrate up and down to generate sound, but since the exciting coil does not need to consider the thickness at all, it can be configured as a low-profile electromagnetic acoustic transducer, and because it is formed by printed wiring, there is a risk of disconnection. Absent. As a concrete means for solving the problems, it is preferable that the exciting coil formed by the printed wiring is magnetically plated as in the invention of claim 2.
With this configuration, the exciting coil can be attracted to the magnetic generator when the power is off. As in the invention described in claims 3 and 4, it is preferable that a magnetic body that receives the magnetic field of the magnetic generator is arranged with the sounding plate interposed therebetween, or that the magnetic body is formed of a housing. In this way, the air gap magnetic flux density generated from the magnetic generator can be increased.

【0007】この発明の別の課題の解決は請求項5に記
載の発明のように、磁気発生体の磁界内に配され外周部
がハウジングに支持された薄い発音板と、この発音板に
印刷配線で形成した励磁コイルとで第1の振動系を構成
し、前記磁気発生体はハウジングに支持された弾性体に
よって支架されることにより第2の振動系を構成したも
ので達成できる。このようにすれば、音(スピーカ、レ
シーバ)と体感振動の両機能を発揮できる。
Another object of the present invention is to solve the problems described in claim 5 by providing a thin sounding plate arranged in the magnetic field of a magnetic generator and having an outer peripheral portion supported by a housing, and printing on the sounding plate. This can be achieved by forming a first vibrating system with an exciting coil formed of wiring, and constructing a second vibrating system by supporting the magnetic generator with an elastic body supported by a housing. By doing so, both functions of sound (speaker, receiver) and sensible vibration can be exhibited.

【0008】請求項6に示すように、前記磁気発生体は
下部に磁路を兼ねるウエイトが添設されているのがよ
い。このようにすれば、振動量を大にできる。請求項7
に示すように、ここでも前記印刷配線で形成した励磁コ
イルは、磁性メッキされているのがよい。このようにす
れば、励磁コイルは無通電時に磁気発生体に吸引させて
おくことができる。請求項8、9に示すように、前記弾
性体は板状であるものか、前記弾性体はスポンジ状であ
るものにするのがよい。このようにすれば、第2振動系
を簡単に構成できる。請求項10、11に示すように、
ここでも前記可動発音振動板を間にして前記磁気発生体
の磁界を受ける磁性体を配したり、前記磁性体はハウジ
ングで構成されたものがよい。また、請求項12に示す
ように、前記第2の振動系に衝撃によって前記板状弾性
体が応力限界を越えないように弾性体からなる規制部材
を配したものにするのがよい。このようにすれば、落下
などの衝撃があっても板状弾性体の変形が防げる。そし
て、請求項13に示すように前記請求項5ないし12の
いずれか1項に記載の移動体通信装置用薄型電磁音響変
換器を耐熱性クッション部材を介して機器に搭載させた
使用方法を採用のが望ましい。このような使用方法を採
用すると、振動量が機器側の重量物によって減衰させる
なく体感できる。
According to a sixth aspect of the present invention, it is preferable that a weight that also serves as a magnetic path is attached to the lower portion of the magnetic generator. By doing so, the amount of vibration can be increased. Claim 7
As shown in FIG. 5, the exciting coil formed of the printed wiring is also preferably magnetically plated. With this configuration, the exciting coil can be attracted to the magnetic generator when the power is off. As described in claims 8 and 9, it is preferable that the elastic body has a plate shape or the elastic body has a sponge shape. With this configuration, the second vibration system can be easily configured. As described in claims 10 and 11,
Also in this case, it is preferable that a magnetic body that receives the magnetic field of the magnetic generator is arranged with the movable sound-production diaphragm interposed, or that the magnetic body is formed of a housing. Further, as described in claim 12, it is preferable that the second vibrating system is provided with a restricting member made of an elastic body so that the plate-like elastic body does not exceed a stress limit due to an impact. By doing so, the deformation of the plate-like elastic body can be prevented even if there is an impact such as a drop. Then, as shown in claim 13, a method of using the thin electromagnetic acoustic transducer for mobile communication device according to any one of claims 5 to 12 is mounted on a device through a heat-resistant cushion member. Is desirable. If such a method of use is adopted, the amount of vibration can be felt without being damped by the heavy object on the device side.

【0009】[0009]

【発明の実施の形態】図1は、本発明の移動体通信装置
用電磁音響変換器の第1の実施の形態を示す断面図であ
る。図2は、図1にハウジングの一部を削除した状態の
平面図である。図3は、図1の発音体の変形例の要部拡
大断面図である。図4は、図1においてハウジングの第
1の変形例の断面図である。図5は、図4の変形例の断
面図である。図6は、本発明の第2の実施の形態として
振動発生機能を持たせた移動体通信装置用電磁音響変換
器の断面図である。図7は、図6の第1変形例の使用方
法を説明する断面図である。図8は、図6の第2変形例
の断面図である。
1 is a sectional view showing a first embodiment of an electromagnetic acoustic transducer for a mobile communication device according to the present invention. FIG. 2 is a plan view showing a state in which a part of the housing is removed from FIG. FIG. 3 is an enlarged cross-sectional view of a main part of a modification of the sounding body of FIG. FIG. 4 is a sectional view of a first modification of the housing in FIG. FIG. 5 is a cross-sectional view of the modified example of FIG. FIG. 6 is a cross-sectional view of an electromagnetic acoustic transducer for a mobile communication device having a vibration generating function as the second embodiment of the present invention. FIG. 7: is sectional drawing explaining the usage method of the 1st modification of FIG. FIG. 8 is a cross-sectional view of the second modification example of FIG.

【0010】次にこの発明の電磁音響変換器の第1の実
施の形態として採用したマグネチックブザー(レシー
バ、スピーカ兼用)を図面に基づき詳細に説明する。図
1、図2において、1は、0.025ないし0.05m
m程度のポリエステルあるいはポリイミド系の薄いフイ
ルムからなる発音板で0.018mm程度の薄い銅箔を
両面に形成し、フォトエッチング技術で中央のメイン発
音部1aを避けて渦巻き状にスルーホール2aを介して
両面に直列接続で巻数を多くした励磁コイル2を形成し
てある。この励磁コイルから発生する磁界は全部コイル
の内部となり、中央のメイン発音部1aの上下方向とな
る。ここでは励磁コイルは、実際は0.1mm程度のピ
ッチのファインパターンで極めて薄く狭い間隔で形成さ
れているので、その断面は便宜上1本実線で表してい
る。この発音板1は外周でハウジング(H)の一部を構
成する液晶樹脂などの耐半田性を有する樹脂製ベース3
に坦持密閉され、前記印刷配線励磁コイルの端末2bが
前記樹脂製ベース3の立ち上がり部3aに配した取付脚
部を兼ねる給電端子3bの頂部に半田、あるいは溶着な
どで配線される。このようにしたマグネチックブザーは
取付け用ダミー端子3cと、前記給電端子3bとで機器
側の印刷配線板Bに半田付によって取り付けされるよう
になっている。前記ハウジングを構成する樹脂ベース3
の中央にヨーク板4aを介して厚み0.6mm程度の上
下方向に着示した希土類マグネットからなる磁気発生体
4を前記発音板1の中央部に空隙を介して臨ませてい
る。5は、ハウジングの他部を構成する樹脂製蓋体で、
中央に前記磁気発生体4と発音板1を間にして磁気回路
を構成する磁性鉄板5aが埋め込まれ、放音孔5bを設
けている。ここで、前記蓋体5は全体を良好な磁気回路
を構成するために磁性鉄板で構成してもよい。このよう
にしたマグネチックブザーは、図1から判断できるよう
に励磁コイル2の厚みがほとんど無視できるので低姿勢
なものとなる。
Next, a magnetic buzzer (also used as a receiver and a speaker) adopted as a first embodiment of the electromagnetic acoustic transducer of the present invention will be described in detail with reference to the drawings. 1 and 2, 1 is 0.025 to 0.05 m
A sounding plate made of a thin film of about 10 m of polyester or polyimide is used to form a thin copper foil of about 0.018 mm on both sides, and a photo-etching technique is used to avoid the main sounding part 1a in the center and to form a spiral through hole 2a. The exciting coil 2 having a large number of turns is formed on both sides by series connection. The magnetic field generated from this exciting coil is entirely inside the coil and is in the vertical direction of the main sounding section 1a in the center. Since the exciting coil is actually formed in a fine pattern with a pitch of about 0.1 mm and is extremely thin and has a narrow interval, its cross section is shown by one solid line for convenience. The sounding plate 1 is a resin base 3 having a solder resistance such as a liquid crystal resin which constitutes a part of the housing (H) on the outer periphery.
The terminal 2b of the printed wiring exciting coil is supported and sealed on the top of the power supply terminal 3b which also functions as a mounting leg portion arranged on the rising portion 3a of the resin base 3 by soldering or welding. The magnetic buzzer thus configured is attached to the printed wiring board B on the device side by soldering with the mounting dummy terminal 3c and the power supply terminal 3b. Resin base 3 that constitutes the housing
A magnetic generator 4 made of a rare earth magnet, which is vertically attached and has a thickness of about 0.6 mm, is made to face the center of the sounding plate 1 with a gap interposed therebetween via a yoke plate 4a. 5 is a resin lid that constitutes the other part of the housing,
A magnetic iron plate 5a forming a magnetic circuit is embedded in the center with the magnetic generator 4 and the sounding plate 1 interposed, and a sound emitting hole 5b is provided. Here, the lid body 5 may be entirely made of a magnetic iron plate in order to form a good magnetic circuit. The magnetic buzzer thus constructed has a low profile because the thickness of the exciting coil 2 can be almost ignored as can be seen from FIG.

【0011】前記発音板1に形成した励磁コイル2は、
図3に示すように表面を付着量をコントロールした磁性
メッキMKにしてもよい。このようにすると、励磁コイ
ル自体が磁気回路を構成できる。
The exciting coil 2 formed on the sounding plate 1 is
As shown in FIG. 3, the surface may be magnetic plating MK having a controlled adhesion amount. By doing so, the exciting coil itself can form a magnetic circuit.

【0012】次に図4において、上記の実施の形態にお
いてハウジングを変形した場合を説明する。すなわち、
磁性鉄板(ここではブリキ)からなるベース33には、
前記希土類マグネットからなる磁気発生体4が接着効果
のある断熱シート4bを介して載置され、この磁気発生
体4に発音板11を間にしてそれぞれ空隙を介して臨ま
せた蓋体55とで磁気回路を構成している。ベース33
と蓋体55の接合は、いろいろな手段が考えられるが、
ここでは溶接35による。このようなマグネッチクブザ
ーを機器側の印刷配線板に搭載させるには、底部にアク
リル系の強い接着効果のある両面粘着シートSなど貼り
付けて載置するのがよい。ここで、前記発音板11は、
外周部から給電端子11bとしてベロ状に延在させ、ベ
ース33の外方より垂下して機器側の印刷配線板Bに半
田結線されるようになっている。当然ながら、発音板1
1は、ベース33と蓋体55で挟持する部分は、印刷配
線励磁コイル22は絶縁が配慮されている。このように
構成すると、図4から判断できるようにヨーク板が不要
となるのでさらに薄型にできる。
Next, referring to FIG. 4, a case where the housing is modified in the above embodiment will be described. That is,
In the base 33 made of a magnetic iron plate (tin plate in this case),
The magnetic generator 4 composed of the rare earth magnet is placed via a heat insulating sheet 4b having an adhesive effect, and the magnetic generator 4 is covered with a sounding plate 11 between them and a lid 55, respectively. It constitutes a magnetic circuit. Base 33
Although various means can be considered for joining the lid 55 and the lid 55,
Here, by welding 35. In order to mount such a magnetism buzzer on a printed wiring board on the device side, it is preferable to stick and mount an acrylic double-sided adhesive sheet S having a strong adhesive effect on the bottom. Here, the sounding plate 11 is
The power supply terminal 11b extends from the outer peripheral portion in a tongue shape and is hung from the outside of the base 33 to be soldered to the printed wiring board B on the device side. Of course, the sound board 1
In the portion 1 sandwiched between the base 33 and the lid 55, the printed wiring exciting coil 22 is considered to be insulated. According to this structure, as can be seen from FIG. 4, the yoke plate is not required, so that the thickness can be further reduced.

【0013】図5は、図4の変形例で、ベース34と蓋
体56の接合部を突きあわせてベース34側が機器側の
印刷配線板B1に埋め込まれるように載置したものであ
る。このようにすると、さらに低姿勢にできる。
FIG. 5 is a modification of FIG. 4, in which the base 34 and the lid 56 are abutted against each other and the base 34 side is placed so as to be embedded in the printed wiring board B1 on the device side. In this way, the posture can be further lowered.

【0014】次に前記に振動系の他に第2の振動系を備
え、移動体通信装置の無音報知手段として体感振動発生
機能を持たせた電磁音響変換器を説明する。図6におい
て、前記磁気発生体4に磁性メッキしたタングステン合
金からなるウエイト4aを添設して可動磁極体Wを構成
し、この可動磁極体Wは磁性を有する板状弾性体6に載
置され、この板状弾性体6の外周部を前記ハウジングに
支持することによって空中に支架されて上下動させるよ
うになって第2の振動系を構成したものである。図中、
6aが磁気回路補助部材で可動磁極体Wの耐衝撃規制部
材の一つを兼ねているものである。ここで、他の部材
は、前記の構成と同様にすることもできるが、前記樹脂
製ベース、蓋体は磁性粉末入りのものにして磁気回路を
構成させてもよい。なお、ここでも、印刷配線励磁コイ
ル2は前述のように磁性メッキを形成させてもよい。こ
こで、図示した各部材においては、同一なものは同一符
号を付してその説明を省略したい。前記板状弾性体6に
は、落下などの衝撃が加わっても応力限界を超えて変形
しないようにクッション部材からなる上下動規制部材
7、77が添設されている。なお、この上下動規制部材
は、固定側に配されているものでも、その作用効果は同
等である。また、前記タングステン合金からなるウエイ
トは、磁性メッキすることによってヨークの働きが期待
できる。また、ウエイトは磁性鉄板で構成してもよい。
さらに前記ベース3に形成したウエイト逃げ孔3dは想
像線で示すように共鳴効果を狙って第2ベース3eで塞
いでもよい。このように、第2振動系を有する電磁音響
変換器の実施の形態でも図6から判断できるように励磁
コイルの厚みがほとんど無視できるので低姿勢なものが
得られる。
Next, a description will be given of an electromagnetic acoustic transducer including a second vibration system in addition to the vibration system described above and having a function of generating a sensory vibration as a silent notification means of a mobile communication device. In FIG. 6, a weight 4a made of a magnetically-plated tungsten alloy is attached to the magnetic generator 4 to form a movable magnetic pole body W. The movable magnetic pole body W is placed on a plate-like elastic body 6 having magnetism. The second vibrating system is configured so that the outer peripheral portion of the plate-like elastic body 6 is supported by the housing so as to be supported in the air and moved up and down. In the figure,
Reference numeral 6a is a magnetic circuit auxiliary member which also serves as one of the impact resistance restricting members of the movable magnetic pole body W. Here, the other members may have the same configuration as described above, but the resin base and the lid may contain magnetic powder to form a magnetic circuit. Also here, the printed wiring exciting coil 2 may be formed with magnetic plating as described above. Here, in each of the illustrated members, the same parts are designated by the same reference numerals, and description thereof will be omitted. The plate-like elastic body 6 is additionally provided with vertical movement restricting members 7 and 77 formed of cushion members so as not to be deformed beyond a stress limit even when an impact such as a drop is applied. Even if the vertical movement restricting member is arranged on the fixed side, the operation and effect are the same. The weight of the tungsten alloy can be expected to function as a yoke by magnetic plating. Further, the weight may be composed of a magnetic iron plate.
Further, the weight escape hole 3d formed in the base 3 may be closed by the second base 3e aiming at a resonance effect as shown by an imaginary line. As described above, even in the embodiment of the electromagnetic acoustic transducer having the second vibrating system, the thickness of the exciting coil can be almost ignored as can be judged from FIG.

【0015】このような、第2振動系を有する電磁音響
変換器は、薄型にできる利点を応用して図7に示すよう
に耐熱性スポンジ状クッション部材SCを介挿して機器
側の印刷配線板Bに載置する使用方法を採用できる。こ
の場合、発音板11に形成した励磁コイル22は、前述
の図4で説明したような構造、すなわち、前記発音板1
1は、外周部から給電端子として十分余裕を持ってベロ
状に延在させ、前記ベース33の外方より垂下して機器
側の印刷配線板Bに半田結線されるようになっている。
ここで、前記ベースと蓋体は磁性を有する金属で形成し
てもよく、このような場合は、当然ながら、発音板11
は、ベース33と蓋体55で挟持する部分では、印刷配
線励磁コイル22は絶縁が配慮されている。
Such an electroacoustic transducer having the second vibration system is applied to the printed wiring board on the device side by inserting the heat-resistant sponge-like cushion member SC as shown in FIG. It is possible to adopt the usage method of mounting on B. In this case, the exciting coil 22 formed on the sounding plate 11 has the same structure as that described with reference to FIG.
1 is extended from the outer peripheral portion in a tongue shape with a sufficient margin as a power supply terminal, and is hung from the outside of the base 33 to be soldered to a printed wiring board B on the device side.
Here, the base and the lid may be formed of a magnetic metal, and in such a case, the sound producing plate 11 is naturally used.
In the portion sandwiched between the base 33 and the lid 55, the printed wiring exciting coil 22 is considered to be insulated.

【0016】図8は、第2振動系の変形例で、磁気発生
体4とその磁路となるウエイトを兼ねたヨーク板4aa
をスポンジ状クッション部材SPで坦持してベース33
3に支持させたものである。このようにしても、磁気発
生体4とその磁路となるウエイトを兼ねたヨーク板4a
aからなる第2振動系は励磁コイル2の通電によって上
下振動が得られる。
FIG. 8 shows a modification of the second vibration system, which is a yoke plate 4aa which also serves as a magnetic generator 4 and a weight serving as its magnetic path.
The sponge-like cushion member SP to support the base 33
3 supported. Even in this case, the yoke plate 4a also serving as the magnetic body 4 and the weight serving as the magnetic path thereof.
The second vibration system composed of a can obtain vertical vibration by energizing the exciting coil 2.

【0017】この発明はその技術的思想、特徴から逸脱
することなく、他のいろいろな実施の形態をとることが
できる。そのため、前述の実施の形態は単なる例示に過
ぎず限定的に解釈してはならない。この発明の技術的範
囲は特許請求の範囲によって示すものであって、明細書
本文には拘束されない。
The present invention can take various other embodiments without departing from the technical idea and features thereof. Therefore, the above-described embodiment is merely an example and should not be limitedly interpreted. The technical scope of the present invention is shown by the claims and is not bound by the text of the specification.

【0018】[0018]

【発明の効果】以上に説明したように、請求項1に記載
した発明によれば、励磁コイルがほとんど厚みを考慮し
なくて済むので低姿勢な電磁音響変換器に構成でき、印
刷配線で形成しているので断線のおそれがない。請求項
2に記載した発明によれば、励磁コイルは磁気回路を構
成することになり、無通電時に磁気発生体に吸引させて
おくことができるので、反発作用だけの半波交流で駆動
できる。請求項3、4に記載した発明によれば、磁気発
生体から発生する空隙磁束密度を増加させることができ
る。請求項5に記載した発明によれば、低姿勢な音と振
動の両機能を果たすものができる。請求項6に記載した
発明によれば、振動量を大にしたものができる。請求項
7に記載した発明によれば、ここでも励磁コイルは無通
電時に磁気発生体に吸引させておくことができ、反発作
用だけの半波交流で駆動できる。請求項8、9に記載し
た発明によれば、このようにすれば、第2振動系を簡単
に構成できる。請求項10、11に記載した発明によれ
ば、ここでも磁気発生体から発生する空隙磁束密度を増
加させることができる。請求項12に記載した発明によ
れば、落下などの衝撃があっても板状弾性体の変形が防
げるものができる。そして、請求項13に示すような発
明によれば、薄型の利点を活かし、振動量が機器側の重
量物によって減衰させることなく体感できる。
As described above, according to the first aspect of the present invention, since the exciting coil does not need to take the thickness into consideration, it can be constructed as a low-profile electromagnetic acoustic transducer and formed by printed wiring. There is no risk of disconnection. According to the invention described in claim 2, since the exciting coil constitutes a magnetic circuit and can be attracted to the magnetic generator when there is no energization, the exciting coil can be driven by a half-wave AC having only repulsion. According to the invention described in claims 3 and 4, the air gap magnetic flux density generated from the magnetic generator can be increased. According to the invention described in claim 5, it is possible to perform both low-profile sound and vibration functions. According to the invention described in claim 6, it is possible to increase the vibration amount. According to the invention described in claim 7, the exciting coil can also be attracted to the magnetic generator when there is no energization, and can be driven by a half-wave AC having only repulsion. According to the invention described in claims 8 and 9, if it does in this way, the 2nd vibration system can be constituted simply. According to the invention described in claims 10 and 11, the air gap magnetic flux density generated from the magnetic generator can be increased also here. According to the twelfth aspect of the present invention, it is possible to prevent deformation of the plate-like elastic body even if there is an impact such as a drop. Further, according to the invention as set forth in claim 13, by utilizing the advantage of thinness, the vibration amount can be felt without being attenuated by the heavy object on the device side.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の移動体通信装置用電磁音響変換器の第
1の実施の形態を示すの断面図である。
FIG. 1 is a sectional view showing a first embodiment of an electromagnetic acoustic transducer for a mobile communication device of the present invention.

【図2】図1にハウジングの一部を削除した状態の平面
図である。
FIG. 2 is a plan view showing a state in which a part of the housing is removed from FIG.

【図3】図1の発音体の変形例の要部拡大断面図であ
る。
FIG. 3 is an enlarged sectional view of a main part of a modification of the sounding body of FIG.

【図4】図1においてハウジングの変形例の断面図であ
る。
FIG. 4 is a cross-sectional view of a modified example of the housing in FIG.

【図5】図4の変形例の断面図である。5 is a cross-sectional view of a modified example of FIG.

【図6】本発明の第2の実施の形態として振動発生機能
を持たせた移動体通信装置用電磁音響変換器の断面図で
ある。
FIG. 6 is a cross-sectional view of an electromagnetic acoustic transducer for a mobile communication device having a vibration generating function as a second embodiment of the present invention.

【図7】図6の第1変形例の使用方法を説明する断面図
である。
FIG. 7 is a cross-sectional view illustrating a method of using the first modified example of FIG.

【図8】図8は、図6の第2変形例の断面図である。FIG. 8 is a sectional view of a second modification example of FIG.

【図9】従来の電気音響変換器の断面図である。FIG. 9 is a cross-sectional view of a conventional electroacoustic transducer.

【符号の説明】[Explanation of symbols]

1、11 発音板 2、22 励磁コイル 3、33、34、333 ベース 4 磁気発生体 5、55、555 蓋体 6 板状弾性体 7、77 規制部材 S、SC スポンジ状クッション部材 1, 11 sound plate 2.22 Excitation coil 3,33,34,333 Base 4 Magnetic generator 5, 55, 555 lid 6 Plate-like elastic body 7,77 Control member S, SC Sponge cushion material

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 5D107 AA03 AA13 BB08 CC09 CC10 DD12 FF10 5H607 AA17 BB20 BB27 CC01 CC09 DD02 DD09 EE57 JJ08 JJ09 KK08 5H633 BB07 GG02 GG03 GG06 GG08 GG30 HH02 HH03 HH05 HH09 HH16 HH24 HH29 JA03 JA04 JA05    ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5D107 AA03 AA13 BB08 CC09 CC10                       DD12 FF10                 5H607 AA17 BB20 BB27 CC01 CC09                       DD02 DD09 EE57 JJ08 JJ09                       KK08                 5H633 BB07 GG02 GG03 GG06 GG08                       GG30 HH02 HH03 HH05 HH09                       HH16 HH24 HH29 JA03 JA04                       JA05

Claims (13)

【特許請求の範囲】[Claims] 【請求項1】 磁気発生体の磁界内に配され外周部がハ
ウジングに支持された薄い発音板と、この発音板に配し
た励磁コイルとを備えた電磁音響変換器において、前記
励磁コイルは印刷配線で発音板に形成し、前記ハウジン
グの中心に配した前記磁気発生体と空隙を介して対向さ
せた移動体通信装置用薄型電磁音響変換器。
1. An electromagnetic acoustic transducer comprising a thin sounding plate arranged in a magnetic field of a magnetic generator and having an outer peripheral portion supported by a housing, and an exciting coil arranged on the sounding plate, wherein the exciting coil is printed. A thin electromagnetic acoustic transducer for a mobile communication device, which is formed on a sounding plate by wiring and is opposed to the magnetic generator disposed in the center of the housing via a gap.
【請求項2】 前記印刷配線で形成した励磁コイルは磁
性メッキされている請求項1に記載の移動体通信装置用
薄型電磁音響変換器。
2. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 1, wherein the exciting coil formed by the printed wiring is magnetically plated.
【請求項3】 前記発音板を間にして前記磁気発生体の
磁界を受ける磁性体を配した請求項1に記載の移動体通
信装置用薄型電磁音響変換器。
3. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 1, wherein a magnetic body that receives the magnetic field of the magnetic generator is arranged with the sounding plate interposed therebetween.
【請求項4】 前記磁性体はハウジングで構成された請
求項3に記載の移動体通信装置用薄型電磁音響変換器。
4. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 3, wherein the magnetic body is a housing.
【請求項5】 磁気発生体の磁界内に配され外周部がハ
ウジングに支持された薄い発音板と、この発音板に印刷
配線で形成した励磁コイルとで第1の振動系を構成し、
前記磁気発生体は前記ハウジングに支持された弾性体に
よって支架されることにより第2の振動系を構成した移
動体通信装置用薄型電磁音響変換器。
5. A first vibrating system is constituted by a thin sounding plate arranged in a magnetic field of a magnetic generator and having an outer peripheral portion supported by a housing, and an exciting coil formed by printed wiring on the sounding plate.
A thin electromagnetic acoustic transducer for a mobile communication device, wherein the magnetic generator is supported by an elastic body supported by the housing to form a second vibration system.
【請求項6】 前記磁気発生体は下部に磁路を兼ねるウ
エイトが添設されている請求項5に記載の移動体通信装
置用薄型電磁音響変換器。
6. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 5, wherein a weight that also serves as a magnetic path is attached to a lower portion of the magnetic generator.
【請求項7】 前記印刷配線で形成した励磁コイルは磁
性メッキされている請求項5に記載の移動体通信装置用
薄型電磁音響変換器。
7. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 5, wherein the exciting coil formed by the printed wiring is magnetically plated.
【請求項8】 前記弾性体は板状である請求項5に記載
の移動体通信装置用薄型電磁音響変換器
8. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 5, wherein the elastic body has a plate shape.
【請求項9】 前記弾性体はスポンジ状である請求項5
に記載の移動体通信装置用薄型電磁音響変換器。
9. The elastic body is sponge-shaped.
A thin electromagnetic acoustic transducer for mobile communication device according to.
【請求項10】 前記可動発音板を間にして前記磁気発
生体の磁界を受ける磁性体を配した請求項5に記載の移
動体通信装置用薄型電磁音響変換器。
10. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 5, wherein a magnetic body that receives the magnetic field of the magnetic generator is arranged with the movable sound generating plate interposed therebetween.
【請求項11】 前記磁性体はハウジングで構成された
請求項10に記載の移動体通信装置用薄型電磁音響変換
器。
11. The thin electromagnetic acoustic transducer for a mobile communication device according to claim 10, wherein the magnetic body is a housing.
【請求項12】 前記第2の振動系に衝撃によって前記
板状弾性体が応力限界を越えないように弾性体からなる
規制部材を配した請求項8に記載の移動体通信装置用薄
型電磁音響変換器。
12. The thin electromagnetic acoustic device for a mobile communication device according to claim 8, wherein a restricting member made of an elastic body is arranged on the second vibration system so that the plate-like elastic body does not exceed a stress limit due to an impact. converter.
【請求項13】 前記請求項5ないし12のいずれか1
項に記載の移動体通信装置用薄型電磁音響変換器を耐熱
性クッション部材を介して機器に搭載させた移動体通信
装置用薄型電磁音響変換器。
13. The method according to any one of claims 5 to 12
A thin electromagnetic-acoustic transducer for a mobile communication device, wherein the thin electromagnetic-acoustic transducer for a mobile communication device according to the item is mounted on a device via a heat-resistant cushion member.
JP2002110863A 2002-04-12 2002-04-12 Thin electromagnetic acoustic transducer for mobile communication apparatus and method for using the same Pending JP2003305409A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
JP2003305409A true JP2003305409A (en) 2003-10-28

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Country Link
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JP2006175433A (en) * 2004-12-22 2006-07-06 Eta Sa Manufacture Horlogere Suisse Vibrating device provided with mechanical shock protective means for portable article
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US7550885B2 (en) 2006-02-28 2009-06-23 Sanyo Seimitsu Co., Ltd. Reciprocal vibration generator
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US9590463B2 (en) 2011-09-22 2017-03-07 Minebea Co., Ltd. Vibration generator moving vibrator by magnetic field generated by coil and holder used in vibration-generator
US9989437B2 (en) 2013-01-22 2018-06-05 Minebea Co., Ltd. Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
US10305357B2 (en) 2012-05-22 2019-05-28 Minebea Co., Ltd. Vibration generator having swing unit, frame and elastic member
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* Cited by examiner, † Cited by third party
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JP2006175433A (en) * 2004-12-22 2006-07-06 Eta Sa Manufacture Horlogere Suisse Vibrating device provided with mechanical shock protective means for portable article
WO2007020925A1 (en) * 2005-08-17 2007-02-22 Fuji Electric Device Technology Co., Ltd. Electro-acoustic transducer
JPWO2007020925A1 (en) * 2005-08-17 2009-02-26 富士電機デバイステクノロジー株式会社 Electroacoustic transducer
US7550885B2 (en) 2006-02-28 2009-06-23 Sanyo Seimitsu Co., Ltd. Reciprocal vibration generator
US10778074B2 (en) 2011-09-22 2020-09-15 Minebea Mitsumi Inc. Vibration generator moving vibrator by magnetic field generated by coil and holder used in vibration-generator
US11336164B2 (en) 2011-09-22 2022-05-17 Minebea Mitsumi Inc. Vibration generator moving vibrator by magnetic field generated by coil and holder used in vibration-generator
US10298106B2 (en) 2011-09-22 2019-05-21 Minebea Co., Ltd. Vibration generator moving vibrator by magnetic field generated by coil and holder used in vibration-generator
US9590463B2 (en) 2011-09-22 2017-03-07 Minebea Co., Ltd. Vibration generator moving vibrator by magnetic field generated by coil and holder used in vibration-generator
JP2013066846A (en) * 2011-09-22 2013-04-18 Minebea Motor Manufacturing Corp Vibration generator
US10790735B2 (en) 2011-09-22 2020-09-29 Minebea Mitsumi Inc. Vibration generator moving vibrator by magnetic field generated by coil and holder used in vibration-generator
US11837936B2 (en) 2012-05-22 2023-12-05 Minebea Mitsumi, Inc. Vibrator generator having swing unit, frame and elastic member
US10305357B2 (en) 2012-05-22 2019-05-28 Minebea Co., Ltd. Vibration generator having swing unit, frame and elastic member
US11552542B2 (en) 2012-05-22 2023-01-10 Minebea Mitsumi Inc. Vibrator generator having swing unit, frame and elastic member
US10848043B2 (en) 2012-05-22 2020-11-24 Minebea Mitsumi Inc. Vibration generator having swing unit, frame and elastic member
US11196327B2 (en) 2012-05-22 2021-12-07 Minebea Mitsumi Inc. Vibration generator having swing unit, frame and elastic member
US10350637B2 (en) 2013-01-22 2019-07-16 Minebea Co., Ltd. Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
US10780457B2 (en) 2013-01-22 2020-09-22 Minebea Mitsumi Inc. Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
US11642696B2 (en) 2013-01-22 2023-05-09 Minebea Mitsumi Inc. Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
US9989437B2 (en) 2013-01-22 2018-06-05 Minebea Co., Ltd. Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
US11904359B2 (en) 2013-01-22 2024-02-20 Minebea Mitsumi Inc. Vibration generator moving vibrator by magnetic field generated by coil and vibrator-mounted holder used in vibration-generator
JP7501554B2 (en) 2022-02-28 2024-06-18 セイコーエプソン株式会社 Vibration generating device, vibration reducing device and electronic device

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