JP3358649B2 - Electromagnetic sounder - Google Patents
Electromagnetic sounderInfo
- Publication number
- JP3358649B2 JP3358649B2 JP12031997A JP12031997A JP3358649B2 JP 3358649 B2 JP3358649 B2 JP 3358649B2 JP 12031997 A JP12031997 A JP 12031997A JP 12031997 A JP12031997 A JP 12031997A JP 3358649 B2 JP3358649 B2 JP 3358649B2
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- diaphragm
- electromagnetic sounder
- permanent magnet
- balancer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、通信機器、情報機
器及び電子、電気機器の音源として使用される電磁サウ
ンダに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic sounder used as a sound source for communication equipment, information equipment, and electronic and electric equipment.
【０００２】[0002]
【従来の技術】従来、この種の電磁サウンダは、図５に
示すように、鉄芯１にコイル２が巻かれ、その外周には
リング状の永久磁石１４を配し、更に、その外周には、
非磁性のリング状のスペーサ１７が配置されている。2. Description of the Related Art Conventionally, this type of electromagnetic sounder has, as shown in FIG. Is
A non-magnetic ring-shaped spacer 17 is arranged.
【０００３】スペーサ１７の上部には、パーマロイ等の
磁性体で作られた厚さ０.０５ｍｍ程度の振動板１３が
固定されており、永久磁石１４により一定方向に磁化さ
れている。又、振動板１３の中央部には、共振点の調整
用にパーマロイ等で作られた厚さ０.３ｍｍ程度のバラ
ンサ６が固定されている。A diaphragm 13 having a thickness of about 0.05 mm made of a magnetic material such as permalloy is fixed above the spacer 17, and is magnetized in a certain direction by a permanent magnet 14. A balancer 6 made of permalloy or the like and having a thickness of about 0.3 mm for adjusting a resonance point is fixed to the center of the diaphragm 13.
【０００４】コイル２に電流を流すと、鉄芯１は磁化さ
れ、先端に磁極が発生する。電流の方向により、振動板
１３は、鉄芯に吸引、又は反発される。When a current is applied to the coil 2, the iron core 1 is magnetized, and a magnetic pole is generated at the tip. Depending on the direction of the current, diaphragm 13 is attracted or repelled to the iron core.
【０００５】従って、コイルに断続的に電流を流すこと
により、あるいは交番電流を流すことにより、振動板１
３は、電流の周波数で振動を始め、カバー８に設けられ
た放音孔１９より音が発生する。[0005] Therefore, by applying a current intermittently to the coil or an alternating current, the diaphragm 1
3 starts to vibrate at the frequency of the current, and a sound is generated from a sound emission hole 19 provided in the cover 8.
【０００６】[0006]
【発明が解決しようとする課題】通信機器、情報機器、
及び電子、電気機器における小型化の要求は、止まるこ
とを知らず、そのため、前記機器に組込まれる部品に対
する小型化の要求は熾烈なものがあり、電磁サウンダに
おいても、小型化の要求は例外ではない。SUMMARY OF THE INVENTION Communication equipment, information equipment,
And the demand for miniaturization of electronic and electrical equipment never stops, and therefore, the demand for miniaturization of components incorporated in the equipment is intense, and the demand for miniaturization of electromagnetic sounders is no exception. .
【０００７】従来の電磁サウンダは、寸法が大きくな
り、簡単に小型化の要求に対応できないという欠点があ
った。[0007] The conventional electromagnetic sounder has the disadvantage that its dimensions are large and it is not possible to easily meet the demand for miniaturization.
【０００８】そこで、本発明の目的は、小型の電磁サウ
ンダを提供することにある。It is an object of the present invention to provide a small electromagnetic sounder.
【０００９】[0009]
【課題を解決するための手段】本発明は、円板状で中央
部に凸部を有する鉄芯と、前記鉄芯の凸部の周囲に巻回
されたコイルと、前記鉄芯上で前記コイルの外側に固定
された環状の軟磁性材料よりなるスペーサと、前記スペ
ーサに固定された非磁性金属材料よりなる円板状の振動
板と、前記振動板の中央部に固定されたバランサよりな
る電磁サウンダであって、前記鉄芯の少なくとも一部に
永久磁石材料が設けられ、前記振動板に波形の加工が施
されたことを特徴とする電磁サウンダである。The present invention SUMMARY OF] is an iron core having a convex portion at the center in the disk-shaped, and a coil wound around the projecting portion of said iron core, said on said iron core A spacer made of an annular soft magnetic material fixed to the outside of the coil, a disk-shaped diaphragm made of a non-magnetic metal material fixed to the spacer, and a balancer fixed to the center of the diaphragm an electromagnetic sounder, at least in part on <br/> permanent magnet material is provided, processing facilities of the waveform to the vibration plate of said iron core
An electromagnetic sounder, characterized in that it is.
【００１０】[0010]
【００１１】[0011]
【００１２】[0012]
【００１３】[0013]
【００１４】[0014]
【発明の実施の形態】本発明は、鉄芯の少なくとも一部
に永久磁石材料を配し、鉄芯外周部のリング状永久磁石
を廃止して小型化したことを特徴とする電磁サウンダで
ある。又、スペーサを軟磁性体とし、振動板を非磁性体
にすることにより、更に小型化を計ったものである。永
久磁石は、鉄芯の中央凸部の少なくとも一部、もしく
は、円板状部の少なくとも一部、及びそれらの組み合わ
せに配することが考えられ、いずれも本願目的を達成す
ることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is an electromagnetic sounder characterized in that a permanent magnet material is disposed on at least a part of an iron core and a ring-shaped permanent magnet on the outer periphery of the iron core is eliminated to reduce the size. . Further, the size is further reduced by using a soft magnetic material for the spacer and a non-magnetic material for the diaphragm. It is conceivable that the permanent magnet is arranged on at least a part of the central convex part of the iron core, or at least a part of the disk-shaped part, and a combination thereof, and any of them can achieve the object of the present application.
【００１５】又、スペーサが軟磁性体であることによ
り、磁気回路として有効に働き、磁束のもれが少なくな
り、従って、小型化の作用効果がある。振動板が非磁性
金属材料であることにより、バランサに有効に吸引反発
の力が働き、小型化の作用効果がある。振動板を波形に
加工することにより、振動しやすくなり、小型化の作用
効果があるので、上記の構成とすることが望ましい。Further, since the spacer is made of a soft magnetic material, it works effectively as a magnetic circuit, and the leakage of magnetic flux is reduced, and thus, there is an effect of reducing the size. Since the diaphragm is made of a non-magnetic metal material, the force of the suction repulsion works effectively on the balancer , which has the effect of reducing the size. By processing the diaphragm into a waveform, it is easy to vibrate, and there is an effect of miniaturization.
【００１６】[0016]
【実施例】以下、本発明の電磁サウンダの実施例につい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the electromagnetic sounder of the present invention will be described below.
【００１７】（第１の実施例） 図１に、本発明の第１の実施例の断面図を示した。鉄芯
１の中央部の凸部の一部の端面に露出するように、永久
磁石４が埋設してある。前記鉄芯１には、コイル２が巻
回され、その外周には磁性体よりなるリング状のスペー
サ７を配置した。スペーサ７の上部には、非磁性体で作
られた厚み０.０５ｍｍ程度の振動板３を配置し、その
中央部には、共振点調整用のパーマロイよりなるバラン
サ６を電子ビーム溶接により固定した。(First Embodiment) FIG. 1 shows a sectional view of a first embodiment of the present invention. A permanent magnet 4 is buried so as to be exposed on a part of the end face of the convex portion at the center of the iron core 1. A coil 2 is wound around the iron core 1, and a ring-shaped spacer 7 made of a magnetic material is disposed on the outer periphery of the coil 2. A diaphragm 3 made of a non-magnetic material and having a thickness of about 0.05 mm is disposed above the spacer 7, and a balancer 6 made of permalloy for adjusting a resonance point is fixed to the center of the diaphragm 3 by electron beam welding. .
【００１８】永久磁石４は、厚み方向に着磁しており、
振動板３に配されたバランサ６を磁化している。コイル
２に電流を流すと、電流の方向により、バランサ６は、
鉄芯１に吸引又は反発される。従って、コイルに断続的
に又は交番電流を流すことにより、バランサ６に固定さ
れている振動板３は、与えられた周波数の振動をはじ
め、カバー８に設けられた放音孔９より音が発生する。
従って、従来の共鳴板を磁化するためのリング状永久磁
石は、不要となり、その分のスペースを省くことができ
るため、径寸法を小さくすることができる。尚、バラン
サの固定方法は、電子ビーム溶接としたが接着、半田等
の他の固定法に変わっても、本発明の効果に変りは無
い。又、永久磁石４は、鉄芯１の凸部すべてであっても
よい。The permanent magnet 4 is magnetized in the thickness direction.
The balancer 6 arranged on the diaphragm 3 is magnetized. When a current is applied to the coil 2, the balancer 6
Suctioned or repelled by the iron core 1. Therefore, the diaphragm 3 fixed to the balancer 6 generates a sound from the sound emission hole 9 provided in the cover 8 including a vibration of a given frequency by intermittently or alternately flowing an alternating current through the coil. I do.
Therefore, the conventional ring-shaped permanent magnet for magnetizing the resonance plate becomes unnecessary, and the space for the permanent magnet can be saved, so that the diameter can be reduced. The method of fixing the balancer is electron beam welding, but the effect of the present invention does not change even if it is changed to another fixing method such as bonding or soldering. Further, the permanent magnet 4 may be all the convex portions of the iron core 1.
【００１９】（第２の実施例） 図２は、本発明第２の実施例を示す断面図であるが、永
久磁石４の配置が、鉄芯１の円板状部と接するように凸
部の根元に設けたことと、振動板３ａに微細な波形の加
工を施したものである。動作については、前述した動作
と同じであるが、振動板３ｂに波形の加工を施したこと
で、更に小型化することができた。本発明により、電磁
サウンダは径、方向寸法を大幅に小型化することができ
る。(Second Embodiment) FIG. 2 is a cross-sectional view showing a second embodiment of the present invention. The arrangement of the permanent magnets 4 is such that the arrangement of the permanent magnets 4 is in contact with the disk-shaped portion of the iron core 1. And the vibration plate 3a is processed with a fine waveform. The operation is the same as the above-described operation, but the size can be further reduced by performing the waveform processing on the diaphragm 3b. According to the present invention, the diameter and the dimension of the electromagnetic sounder can be significantly reduced.
【００２０】（第３の実施例） 図３に、本発明第３の実施例の断面図を示した。鉄芯１
の円板状部の一部に永久磁石４が配してある。前記鉄芯
１には、コイル２が巻回され、その外周には、磁性体よ
りなるリング状のスペーサ７を配置した。スペーサ７の
上部には、非磁性体で作られた厚み０.０５ｍｍ程度の
振動板３を配置し、その中央部には、共振点調整用のバ
ランサとして、パーマロイよりなるバランサ６を電子ビ
ーム溶接により固定した。永久磁石４は、厚み方向に着
磁しており、振動板３に配されたバランサ６を磁化して
いる。コイル２に電流を流すと、電流の方向により、バ
ランサ６は、鉄芯１に吸引又は反発される。従って、コ
イルに断続的に又は交番電流を流すことにより、バラン
サ６に固定されている振動板３は、与えられた周波数の
振動をはじめ、音が発生する。従って、従来の共鳴板を
磁化するためのリング状永久磁石は、不要となり、その
分のスペースを省くことができるため、径寸法を小さく
することができる。尚、バランサの固定方法は、電子ビ
ーム溶接としたが、接着、半田等の他の固定法に変わっ
ても、本発明の効果に変りは無い。(Third Embodiment) FIG. 3 shows a sectional view of a third embodiment of the present invention. Iron core 1
The permanent magnet 4 is arranged in a part of the disk-shaped portion of the present invention. A coil 2 is wound around the iron core 1, and a ring-shaped spacer 7 made of a magnetic material is disposed around the coil 2. The diaphragm 3 made of a non-magnetic material and having a thickness of about 0.05 mm is disposed on the upper part of the spacer 7, and a balancer 6 made of permalloy is used as a balancer for adjusting the resonance point in the center of the diaphragm 3 by electron beam welding. And fixed. The permanent magnet 4 is magnetized in the thickness direction, and magnetizes the balancer 6 disposed on the diaphragm 3. When a current flows through the coil 2, the balancer 6 is attracted or repelled to the iron core 1 depending on the direction of the current. Therefore, the diaphragm 3 fixed to the balancer 6 generates a sound including a vibration of a given frequency by intermittently or alternately supplying an alternating current to the coil. Therefore, the conventional ring-shaped permanent magnet for magnetizing the resonance plate becomes unnecessary, and the space for the permanent magnet can be saved, so that the diameter can be reduced. Although the method of fixing the balancer is electron beam welding, the effect of the present invention does not change even if it is changed to another fixing method such as bonding or soldering.
【００２１】（第４の実施例） 図４は、本発明の第４の実施例を示す断面図であるが、
鉄芯の円板状部の全てが永久磁石になったことと、振動
板３ｂに微細な波形の加工を施したものである。動作に
ついては、前述した動作と同じであるが、振動板３ｂに
波形の加工を施したことで、更に小型化することができ
た。本発明により、電磁サウンダは径方向寸法を大幅に
小型化することができる。(Fourth Embodiment) FIG. 4 is a sectional view showing a fourth embodiment of the present invention.
The disk-shaped portion of the iron core is entirely a permanent magnet, and the diaphragm 3b is processed with a fine waveform. The operation is the same as the above-described operation, but the size can be further reduced by performing the waveform processing on the diaphragm 3b. According to the present invention, the radial size of the electromagnetic sounder can be significantly reduced.
【００２２】[0022]
【発明の効果】以上、述べたように、本発明の電磁サウ
ンダは、小型の電磁サウンダを提供することができる。As described above, the electromagnetic sounder of the present invention can provide a small electromagnetic sounder.
【図１】本発明の電磁サウンダの第１の実施例を示す断
面図。FIG. 1 is a sectional view showing a first embodiment of an electromagnetic sounder according to the present invention.
【図２】本発明の電磁サウンダの第２の実施例を示す断
面図。FIG. 2 is a sectional view showing a second embodiment of the electromagnetic sounder of the present invention.
【図３】本発明の電磁サウンダの第３の実施例を示す断
面図。FIG. 3 is a sectional view showing a third embodiment of the electromagnetic sounder of the present invention.
【図４】本発明の電磁サウンダの第４の実施例を示す断
面図。FIG. 4 is a sectional view showing a fourth embodiment of the electromagnetic sounder of the present invention.
【図５】従来の電磁サウンダの一例を示す説明図。図５
（ａ）は従来の電磁サウンダの外観斜視図、図５（ｂ）
は従来の電磁サウンダの断面図。FIG. 5 is an explanatory view showing an example of a conventional electromagnetic sounder. FIG.
FIG. 5A is an external perspective view of a conventional electromagnetic sounder, and FIG.
Is a sectional view of a conventional electromagnetic sounder.
１，１０ 鉄芯 ２ コイル ３，３ａ，１３ 振動板 ４，１４ 永久磁石 ６ バランサ ７，１７ スペーサ ８ カバー ９，１９ 放音孔 1,10 Iron core 2 Coil 3,3a, 13 Vibration plate 4,14 Permanent magnet 6 Balancer 7,17 Spacer 8 Cover 9,19 Sound emission hole
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０４Ｒ 13/00 Ｈ０４Ｒ 13/00 (58)調査した分野(Int.Cl.7，ＤＢ名) G10K 9/13 101 G10K 9/12 H04R 13/00 ──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. 7 identification code FI H04R 13/00 H04R 13/00 (58) Field surveyed (Int.Cl. 7 , DB name) G10K 9/13 101 G10K 9 / 12 H04R 13/00
Claims (1)
前記鉄芯の凸部の周囲に巻回されたコイルと、前記鉄芯
上で前記コイルの外側に固定された環状の軟磁性材料よ
りなるスペーサと、前記スペーサに固定された非磁性金
属材料よりなる円板状の振動板と、前記振動板の中央部
に固定されたバランサよりなる電磁サウンダであって、
前記鉄芯の少なくとも一部に永久磁石材料が設けられ、
前記振動板に波形の加工が施されたことを特徴とする電
磁サウンダ。1. An iron core having a disk shape and having a convex portion at a central portion,
A coil wound around the projecting portion of the iron core, a soft magnetic material by <br/> Li Cheng spacer ring secured to the outside of the coil on the iron core, which is fixed to said spacer Non-magnetic gold
A disc-shaped diaphragm made of metal material, wherein an electromagnetic sounder consisting fixed balancer in the center portion of the diaphragm,
A permanent magnet material is provided on at least a part of the iron core ,
An electromagnetic sounder, wherein the diaphragm is subjected to a waveform processing .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12031997A JP3358649B2 (en) | 1997-04-22 | 1997-04-22 | Electromagnetic sounder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12031997A JP3358649B2 (en) | 1997-04-22 | 1997-04-22 | Electromagnetic sounder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10301573A JPH10301573A (en) | 1998-11-13 |
| JP3358649B2 true JP3358649B2 (en) | 2002-12-24 |
Family
ID=14783314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12031997A Expired - Fee Related JP3358649B2 (en) | 1997-04-22 | 1997-04-22 | Electromagnetic sounder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3358649B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100368295B1 (en) * | 2001-05-10 | 2003-01-24 | 주식회사 삼부커뮤닉스 | Multipurpose signal converting apparatus |
| KR20040046630A (en) * | 2002-11-28 | 2004-06-05 | 이광훈 | a vibration speaker eguipped with center core |
| KR100700125B1 (en) | 2005-09-08 | 2007-03-28 | 강윤규 | A vibrator |
| JP6295764B2 (en) * | 2014-03-25 | 2018-03-20 | 三光金型株式会社 | Bone conduction device |
| CN107484089A (en) * | 2017-07-26 | 2017-12-15 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| CN107404678A (en) * | 2017-07-26 | 2017-11-28 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| CN107360509A (en) * | 2017-07-27 | 2017-11-17 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| ES2828374T4 (en) | 2017-10-25 | 2023-10-13 | Ps Audio Design Oy | Transducer arrangement |
| CN108347680B (en) * | 2018-05-09 | 2024-05-28 | 苏州逸巛科技有限公司 | Acoustic generator |
-
1997
- 1997-04-22 JP JP12031997A patent/JP3358649B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10301573A (en) | 1998-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5604815A (en) | Single magnet audio transducer and method of manufacturing | |
| JP3323345B2 (en) | Magnetic circuit for speaker | |
| EP1304903B1 (en) | Electro-acoustic transducer and electronic device | |
| EP1434463A2 (en) | Electroacoustic transducer and electronic apparatus with such a transducer | |
| CA2083988C (en) | Balanced armature transducers with transverse gap | |
| CA2435932A1 (en) | An electroacoustic transducer | |
| JPH0198400A (en) | Speaker | |
| JP3358649B2 (en) | Electromagnetic sounder | |
| US7676053B2 (en) | Electrodynamic loudspeaker | |
| JPH06133394A (en) | Structure of speaker | |
| JP3217962B2 (en) | Electroacoustic transducer | |
| US1955248A (en) | Magnetic movement | |
| US20150280634A1 (en) | Electro-magnetic transducer and vibration control system | |
| JP4398078B2 (en) | Electromagnetic acoustic transducer | |
| JPH10187159A (en) | Electromagnetic sounder | |
| WO2024122445A1 (en) | Sound detection device | |
| JP3214816B2 (en) | Speaker | |
| JP2002271895A (en) | Magnet for electromagnetic sounder | |
| JP3258535B2 (en) | Magnetic circuit for speaker | |
| JPH10112896A (en) | Magnetic circuit for speaker | |
| JP3018637B2 (en) | Speaker manufacturing method | |
| JP3961960B2 (en) | Speaker | |
| JPH11215592A (en) | Loudspeaker | |
| JP2004343527A (en) | Electroacoustic transducer | |
| JP3195520B2 (en) | Repulsion magnetic circuit type speaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071011 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081011 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091011 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091011 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101011 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101011 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111011 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121011 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121011 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131011 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |