JP2005057640A - Loud speaker - Google Patents

Loud speaker Download PDF

Info

Publication number
JP2005057640A
JP2005057640A JP2003288720A JP2003288720A JP2005057640A JP 2005057640 A JP2005057640 A JP 2005057640A JP 2003288720 A JP2003288720 A JP 2003288720A JP 2003288720 A JP2003288720 A JP 2003288720A JP 2005057640 A JP2005057640 A JP 2005057640A
Authority
JP
Japan
Prior art keywords
frame
magnetic
magnetic circuit
gap
hole
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.)
Granted
Application number
JP2003288720A
Other languages
Japanese (ja)
Other versions
JP4075728B2 (en
Inventor
Kiyoshi Yamagishi
清 山岸
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2003288720A priority Critical patent/JP4075728B2/en
Publication of JP2005057640A publication Critical patent/JP2005057640A/en
Application granted granted Critical
Publication of JP4075728B2 publication Critical patent/JP4075728B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a loud speaker which improves tone quality by forming an air hole in a magnetic gap to reduce air resistance in a magnetic circuit and in which the prevention of the generation of an abnormal sound is achieved without a cost increase resulting from an increase in the number of parts/man-hour for assembling. <P>SOLUTION: In the loud speaker, a center hole 10b is formed in the vicinity of the center of the bottom surface of a frame 10, and the frame 10 has a projecting part 10a in order to form a gap B between the bottom surface of the frame 10 and the bottom surface of a magnetic circuit 1. In this constitution, the air resistance at the time of the vertical driving of a voice coil 6 is reduced by the presence of the air hole 12a formed in the magnetic gap 1a to improve the tone quality, and the loud speaker having no abnormal noise is obtained without increasing the number of parts and the man-hour for assembling. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は各種音響機器に使用されるスピ−カの音質や品質の改善に関するものである。   The present invention relates to an improvement in sound quality and quality of a speaker used in various types of audio equipment.

従来のスピ−カについて、図３の側断面図により説明する。   A conventional speaker will be described with reference to a side sectional view of FIG.

同図によると、４は底面の外周に複数の空気孔４ａを設けたヨークであり、３はこのヨーク４に重畳して接着結合されたマグネットであり、２はこのマグネット３上に接着結合されたプレートであり、前記ヨーク４とマグネット３とプレート２で磁気回路１を形成している。   According to the figure, 4 is a yoke provided with a plurality of air holes 4a on the outer periphery of the bottom surface, 3 is a magnet that is adhesively bonded to the yoke 4 and 2 is adhesively bonded on the magnet 3. A magnetic circuit 1 is formed by the yoke 4, the magnet 3 and the plate 2.

５はこの磁気回路１に接着結合されたフレームであり、６は前記磁気回路１の磁気ギャップ１ａに一端側が挿入され、他端が振動板８に接着結合されるボイスコイルであり、７は外周が前記フレーム５に接着結合され、内周が前記ボイスコイル６に接着結合されるダンパーであり、８は外周がエッジ部８ａを介して前記フレーム５に接着結合され、内周が前記ボイスコイル６に接着結合される振動板であり、９は前記ボイスコイル６を覆うようにボイスコイル６の上部に接着結合されたダストキャップである。   Reference numeral 5 denotes a frame that is adhesively bonded to the magnetic circuit 1, reference numeral 6 denotes a voice coil having one end inserted into the magnetic gap 1a of the magnetic circuit 1 and the other end adhesively bonded to the diaphragm 8, and 7 an outer periphery. Is a damper that is adhesively bonded to the frame 5 and whose inner periphery is adhesively bonded to the voice coil 6, and 8 is an outer periphery that is adhesively bonded to the frame 5 via an edge portion 8 a, and an inner periphery is the voice coil 6. And 9 is a dust cap that is adhesively bonded to the upper portion of the voice coil 6 so as to cover the voice coil 6.

なお、５ａは前記ヨーク４に設けた空気孔４ａに対応して前記フレーム５に設けられた孔部である。   Reference numeral 5 a denotes a hole provided in the frame 5 corresponding to the air hole 4 a provided in the yoke 4.

これによって、ボイスコイル６が外部からの音声入力信号に応じて上下駆動して振動板８を振動させ発音させるときに、磁気ギャップ１ａ内や磁気回路１と前記振動板８間の空気抵抗を減少させ、音質の向上を図るものである。   As a result, when the voice coil 6 is driven up and down in response to an external audio input signal to vibrate the diaphragm 8, the air resistance between the magnetic gap 1a and between the magnetic circuit 1 and the diaphragm 8 is reduced. To improve sound quality.

尚、磁気ギャップに空気孔を設けた先行技術文献情報としては、例えば、特許文献１や特許文献２が知られている。
実開昭６２−１０９５９４号公報 特開昭６２−１４０５９８号公報 For example, Patent Literature 1 and Patent Literature 2 are known as prior art literature information in which air holes are provided in the magnetic gap.
Japanese Utility Model Publication No. 62-109594 Japanese Patent Laid-Open No. 62-140598

以上の従来のスピーカは、音質向上のために前述の構成で磁気ギャップ１ａ内や磁気回路１の空気抵抗を減少させていたが、この種スピーカを密閉ボックス内に装着、密閉ボックス内の鉄粉や磁粉を除去して使用する場合を除き、この種密閉ボックスを使用しない場合には前記孔部５ａを防塵ネット等でカバ−し、鉄粉や磁粉の進入を防止して磁気ギャップ内に鉄粉や磁粉が進入して発生する可能性のある異常音を防止する必要があった（特に車載用のスピーカではその必要があった。）。   In the above conventional speaker, the air resistance of the magnetic gap 1a and the magnetic circuit 1 is reduced in the above-described configuration in order to improve sound quality. However, this type of speaker is mounted in a sealed box, and iron powder in the sealed box is used. Unless this type of sealed box is used, the hole 5a is covered with a dust-proof net or the like to prevent the ingress of iron powder or magnetic powder, and the iron in the magnetic gap. It was necessary to prevent abnormal sounds that could be generated when powder or magnetic powder entered (especially for in-vehicle speakers).

しかしながら、防塵ネット等の使用は孔部５ａの通気度を低下させ、また、組み立て工数の増加や部品点数の増加によるコスト上昇を招く、また、防塵ネット等の貼り付けに使用する接着剤のはみ出しによる外観不良を発生する可能性があるという課題を有するものであった。   However, the use of a dustproof net, etc., reduces the air permeability of the hole 5a, and causes an increase in cost due to an increase in the number of assembly steps and the number of parts, and the protrusion of the adhesive used for attaching the dustproof net etc. There is a problem that there is a possibility of appearance failure due to.

上記課題を解決するために、本発明の請求項１に記載のスピーカは、フレームの底面中央近傍に形成された中央孔を設け、前記フレーム底面と前記磁気回路底面間に隙間を設ける前記フレームおよび／または前記磁気回路に設けられた隙間形成手段を設けたため、スピーカ外にある鉄粉や磁紛がスピーカに後部から進入したとしても、鉄粉や磁紛はフレームに設けた中央孔を通り、磁気回路の底面とフレームの間を通って磁気ギャップ内の底部に設けられた空気孔に到達することになり、磁気ギャップ内に進入する前に磁気回路に吸着することで磁気ギャップ内に鉄粉や磁粉が進入して発生する異常音の防止を部品点数や組み立て工数の増加を伴うことなく行えるものである。   In order to solve the above-mentioned problem, a speaker according to claim 1 of the present invention is provided with a center hole formed in the vicinity of the center of the bottom surface of the frame, and the frame for providing a gap between the bottom surface of the frame and the bottom surface of the magnetic circuit; // Because the gap forming means provided in the magnetic circuit is provided, even if iron powder or magnetic powder outside the speaker enters the speaker from the rear, the iron powder or magnetic powder passes through the central hole provided in the frame, It passes between the bottom of the magnetic circuit and the frame and reaches the air hole provided in the bottom of the magnetic gap, and it adsorbs to the magnetic circuit before entering the magnetic gap, thereby iron powder in the magnetic gap. It is possible to prevent abnormal noise generated by the intrusion of magnetic powder and magnetic powder without increasing the number of parts and the number of assembly steps.

本発明の請求項２に記載のスピーカの発明は、請求項１に記載のスピーカの磁気回路の底面中央に磁気回路を貫通する貫通孔を設けたものであり、鉄粉や磁紛はフレームに設けた中央孔を通り、前記貫通孔に進入することになり、磁気ギャップ内に鉄粉や磁粉が進入して発生する異常音の防止をより確実に行えるものである。   According to a second aspect of the present invention, there is provided a speaker according to the first aspect in which a through-hole penetrating the magnetic circuit is provided in the center of the bottom surface of the magnetic circuit of the speaker. It will pass through the provided central hole and enter the through hole, so that it is possible to more reliably prevent abnormal noise caused by iron powder or magnetic powder entering the magnetic gap.

以上のように、本発明のスピーカは、磁気ギャップ内に空気孔を設けて磁気回路内の空気抵抗を減じて音質の向上を図ったスピーカを部品点数・組み立て工数の増加によるコストアップを招くことなく実現できるものである。   As described above, the speaker according to the present invention has an air hole in the magnetic gap and reduces the air resistance in the magnetic circuit to improve the sound quality. It can be realized without.

以下、本発明の一実施の形態を図１〜図２により説明する。   An embodiment of the present invention will be described below with reference to FIGS.

なお、本発明の背景技術に記載した従来の技術で説明した部分と同一部分には同一番号を付与し、説明を省略して説明する。   In addition, the same number is attached | subjected to the same part as the part demonstrated by the prior art described in the background art of this invention, and description is abbreviate | omitted and demonstrated.

（実施の形態１）
図１は本発明の発明のスピーカの一実施の形態の側断面図であり、図２は同底面図であり、主として請求項１および請求項２について説明するものである。 (Embodiment 1)
FIG. 1 is a side sectional view of a speaker according to an embodiment of the present invention. FIG. 2 is a bottom view of the speaker, and claims 1 and 2 will mainly be described.

同図により、背景技術との相違点について説明すると、１０は磁気回路１をその底面に配置してなるフレームであり、このフレーム１０と磁気回路１との接合面のフレーム１０側には、フレーム１０の内側に向かう凸加工部１０ａが複数箇所施され、磁気回路１のヨーク１２とフレーム１０間に微小な隙間Ｂを設けている。   The difference from the background art will be described with reference to the figure. Reference numeral 10 denotes a frame in which the magnetic circuit 1 is disposed on the bottom surface. The frame 10 side of the joint surface between the frame 10 and the magnetic circuit 1 A plurality of convex processing portions 10 a directed to the inside of the magnetic circuit 10 are provided, and a minute gap B is provided between the yoke 12 of the magnetic circuit 1 and the frame 10.

なお、フレーム１０の略中央には中央孔１０ｂが形成され、ヨーク１２には前記フレーム１０と対応する位置にマグネット３まで到達する貫通孔１２ｂが設けられ、また、磁気ギャップ１ａ内のヨーク１２の底部には空気孔１２ａが設けられている。   A central hole 10b is formed substantially at the center of the frame 10, a through hole 12b reaching the magnet 3 at a position corresponding to the frame 10, and a yoke 12 in the magnetic gap 1a. An air hole 12a is provided at the bottom.

以上のように形成されたスピーカにおいては、フレーム１０の中央孔１０ｂから鉄紛や磁紛は進入するが、磁気ギャップ１ａまで到達するには磁気回路１とフレーム１０の隙間Ｂを通る必要があり、これらに吸着されて進入が阻止されることになる。   In the speaker formed as described above, iron powder or magnetic powder enters from the central hole 10b of the frame 10, but it must pass through the gap B between the magnetic circuit 1 and the frame 10 to reach the magnetic gap 1a. , And adsorbed by these will prevent entry.

なお、本実施の形態においてはヨーク１２にマグネット３まで到達する貫通孔１２ｂ
を設けたことで、磁紛や鉄紛は貫通孔１２ｂの方向にも吸着されることになり、より鉄粉や磁紛の磁気キャップ１ａへの進入抑制の効果が向上することとなる。 In the present embodiment, the through-hole 12b that reaches the magnet 3 to the yoke 12
As a result, the magnetic powder and the iron powder are attracted also in the direction of the through hole 12b, and the effect of suppressing the entry of the iron powder and the magnetic powder into the magnetic cap 1a is further improved.

また、磁気回路１のヨーク１２とフレーム１０間の微小な隙間は空気の流入を妨げない程度(通気度)で且つ貫通孔１２ｂにおける磁力やスピーカとしての寸法的な制約等から決められるものであるが、０．５ｍｍ〜３ｍｍ程度の範囲が最適である。   In addition, the minute gap between the yoke 12 and the frame 10 of the magnetic circuit 1 is determined to such an extent that the inflow of air is not hindered (air permeability), and due to the magnetic force in the through hole 12b and the dimensional restrictions as a speaker. However, the range of about 0.5 mm to 3 mm is optimal.

また、この隙間Ｂを本実施の形態ではフレーム１０に凸状の加工を行うことで設定したが、これはプレスのような曲げ加工で設定しても良く、ヨーク１２の底部に突起を形成することでも可能であり、以上のような隙間形成手段のうち最適なものを選択することが可能である。   Further, in the present embodiment, the gap B is set by performing a convex process on the frame 10, but this may be set by a bending process such as pressing, and a protrusion is formed at the bottom of the yoke 12. It is also possible, and it is possible to select an optimal one among the gap forming means as described above.

なお、ヨーク１２の貫通孔１２ｂおよびフレーム１０の中央孔１０ｂはスピーカ組み立て時の位置決めや搬送時のガイド穴としても利用できるものである。   The through hole 12b of the yoke 12 and the central hole 10b of the frame 10 can be used as positioning holes during speaker assembly and as guide holes during conveyance.

また、１５は前記ボイスコイル６の両端部が引き出されて夫々接続される端子板である。   Reference numeral 15 denotes a terminal board to which both ends of the voice coil 6 are drawn out and connected respectively.

本発明にかかるスピーカは、音質の向上を図ることが可能となるので映像・音響機器をはじめとする各種電子機器に搭載されるスピーカに使用されるものである。   Since the speaker according to the present invention can improve the sound quality, it is used for a speaker mounted on various electronic devices such as video / audio devices.

本発明のスピーカの一実施の形態の側断面図Side sectional view of one embodiment of the speaker of the present invention 同底面図Bottom view 従来のスピーカの側断面図Side view of a conventional speaker

符号の説明Explanation of symbols

１ 磁気回路
１ａ 磁気ギャップ
６ ボイスコイル
７ ダンパー
８ 振動板
８ａ エッジ
１０ フレーム
１０ａ 凸加工部
１０ｂ 中央孔
１２ ヨーク
１２ａ 空気孔
１２ｂ 貫通孔
Ｂ 隙間 DESCRIPTION OF SYMBOLS 1 Magnetic circuit 1a Magnetic gap 6 Voice coil 7 Damper 8 Diaphragm 8a Edge 10 Frame 10a Convex part 10b Center hole 12 Yoke 12a Air hole 12b Through-hole B Gap

Claims (2)

少なくとも磁気ギャップを設けた磁気回路と、この磁気ギャップ内の底部に設けられた空気孔と、前記磁気回路を底部に配置してなるフレームと、一端側が前記磁気ギャップに挿入され、他端が振動板に固着されるボイスコイルと、内周がこのボイスコイルに結合され、外周がエッジ部を介して前記フレームと結合される振動板と、内周が前記ボイスコイルに結合され、外周が前記フレームに結合されたダンパーとで構成されるスピーカであって、前記フレームの底面中央近傍に中央孔を設け、前記フレーム底面と前記磁気回路底面間に隙間を設ける前記フレームおよび／または前記磁気回路に設けられた隙間形成手段を設けたスピーカ。 At least a magnetic circuit provided with a magnetic gap, an air hole provided at the bottom of the magnetic gap, a frame formed by arranging the magnetic circuit at the bottom, one end side inserted into the magnetic gap, and the other end vibrated A voice coil fixed to the plate, an inner periphery coupled to the voice coil, an outer periphery coupled to the frame via an edge portion, an inner periphery coupled to the voice coil, and an outer periphery coupled to the frame And a damper formed in the frame and / or the magnetic circuit in which a central hole is provided near the center of the bottom surface of the frame and a gap is provided between the bottom surface of the frame and the bottom surface of the magnetic circuit. A speaker provided with a gap forming means. 請求項１に記載のスピーカにおいて、磁気回路の底面中央に磁気回路を貫通する貫通孔を設けたスピーカ。 2. The speaker according to claim 1, wherein a through-hole penetrating the magnetic circuit is provided at the center of the bottom surface of the magnetic circuit.
JP2003288720A 2003-08-07 2003-08-07 Speaker Expired - Fee Related JP4075728B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003288720A JP4075728B2 (en) 2003-08-07 2003-08-07 Speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003288720A JP4075728B2 (en) 2003-08-07 2003-08-07 Speaker

Publications (2)

Publication Number Publication Date
JP2005057640A true JP2005057640A (en) 2005-03-03
JP4075728B2 JP4075728B2 (en) 2008-04-16

Family

ID=34367286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003288720A Expired - Fee Related JP4075728B2 (en) 2003-08-07 2003-08-07 Speaker

Country Status (1)

Country Link
JP (1) JP4075728B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100680325B1 (en) * 2006-01-27 2007-02-08 삼성전자주식회사 Speaker with auxiliary air-hole
US7570779B2 (en) 2004-03-23 2009-08-04 Pioneer Corporation Speaker
WO2014097632A1 (en) * 2012-12-20 2014-06-26 パナソニック株式会社 Speaker device, audiovisual device, portable information processing device, mobile body, and earphone
US10362404B2 (en) 2014-08-29 2019-07-23 Pioneer Corporation Speaker apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632719B (en) * 2018-04-28 2021-05-18 歌尔股份有限公司 Lower magnetic conductive plate for micro loudspeaker and micro loudspeaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7570779B2 (en) 2004-03-23 2009-08-04 Pioneer Corporation Speaker
KR100680325B1 (en) * 2006-01-27 2007-02-08 삼성전자주식회사 Speaker with auxiliary air-hole
WO2014097632A1 (en) * 2012-12-20 2014-06-26 パナソニック株式会社 Speaker device, audiovisual device, portable information processing device, mobile body, and earphone
US9288580B2 (en) 2012-12-20 2016-03-15 Panasonic Intellectual Property Management Co., Ltd. Speaker device, audio visual equipment, mobile information processing apparatus, vehicle, and earphone
JPWO2014097632A1 (en) * 2012-12-20 2017-01-12 パナソニックＩｐマネジメント株式会社 Speaker device, audiovisual apparatus, portable information processing device, moving object, and earphone
US10362404B2 (en) 2014-08-29 2019-07-23 Pioneer Corporation Speaker apparatus

Also Published As

Publication number Publication date
JP4075728B2 (en) 2008-04-16

Similar Documents

Publication Publication Date Title
JP2006033832A (en) Loudspeaker apparatus using display window
US20110243361A1 (en) Speaker system
JP2008312086A (en) Electroacoustic transducer
JP2006238111A (en) Loudspeaker apparatus
US20060254852A1 (en) Integral audio module
JP2006254037A (en) Speaker
US20080240488A1 (en) Speaker
JP4075728B2 (en) Speaker
JP2006229521A (en) Frame for speaker device and speaker device
CN207124755U (en) A kind of sound-producing device
JP2008141274A (en) Electroacoustic transducer
JPH11150791A (en) Speaker
JP2006166151A (en) Loudspeaker for stereo set
JP2008118477A (en) Speaker and speaker system
US7233680B2 (en) Speaker device
JP3812103B2 (en) Speaker manufacturing method
JP2005318339A (en) Speaker apparatus
JP2007251285A (en) Speaker
JP4245463B2 (en) Speaker device
JP4403979B2 (en) Speaker
KR20070051469A (en) Speaker for portable terminal device
JP3112372U (en) Speaker voice coil and diaphragm combination structure for improved workability
JP4514947B2 (en) Speaker
KR20230123677A (en) Microspeaker
KR200371646Y1 (en) Speaker having a vibration plate installed voice coil insert part

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060130

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20060214

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071226

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080108

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080121

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110208

Year of fee payment: 3

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120208

Year of fee payment: 4

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130208

Year of fee payment: 5

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130208

Year of fee payment: 5

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140208

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees