JPS5943040B2 - dome speaker - Google Patents
dome speakerInfo
- Publication number
- JPS5943040B2 JPS5943040B2 JP10060878A JP10060878A JPS5943040B2 JP S5943040 B2 JPS5943040 B2 JP S5943040B2 JP 10060878 A JP10060878 A JP 10060878A JP 10060878 A JP10060878 A JP 10060878A JP S5943040 B2 JPS5943040 B2 JP S5943040B2
- Authority
- JP
- Japan
- Prior art keywords
- dome
- shaped
- voice coil
- magnetic circuit
- magnetic gap
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
【発明の詳細な説明】
本発明はボイスコイルボビンを廃止してコイル巻線を直
接ドーム形振動板に結合して磁気ギャップの占積率の向
上を計り、しかも振動系の質量を軽減して能率の向上を
計ったドーム型スピーカに関するものである。[Detailed Description of the Invention] The present invention eliminates the voice coil bobbin and directly connects the coil winding to the dome-shaped diaphragm to improve the space factor of the magnetic gap, and also reduces the mass of the vibration system and improves efficiency. This relates to a dome-shaped speaker designed to improve performance.
従来のドーム型スピーカとしては、第１図、第２図に示
すように構成されていた。Conventional dome-shaped speakers have been constructed as shown in FIGS. 1 and 2.
すなわち、センターポール１を有するプレート２、リン
グ状のマグネット３、同じくリング状の上部プレート４
擾こよって構成される磁気回路５上にエツジ固定リング
６を取付け、このエツジ固定リング６上にドーム形振動
板７のエツジを取付け、このドーム形振動板７のドーム
部の立上り部にコイルボビン８の下部外周にコイル９を
巻回して構成されるボイスコイル１０を結合し、このコ
イル９部を上記磁気回路５の磁気ギャップ１１にはめこ
み、磁気回路５の上面にバッフル板１２を取付けて構成
されていた。That is, a plate 2 having a center pole 1, a ring-shaped magnet 3, and a ring-shaped upper plate 4.
An edge fixing ring 6 is attached to the magnetic circuit 5 constituted by the vibration, the edge of the dome-shaped diaphragm 7 is attached to the edge fixing ring 6, and a coil bobbin 8 is attached to the rising part of the dome part of the dome-shaped diaphragm 7. A voice coil 10 composed of a coil 9 wound around the lower outer periphery of the magnetic circuit 5 is coupled to the voice coil 10, a portion of the coil 9 is fitted into the magnetic gap 11 of the magnetic circuit 5, and a baffle plate 12 is attached to the upper surface of the magnetic circuit 5. was.
このようなドーム型スピーカにおいては、ドーム形振動
板７のボイスコイル１０との結合部と磁気回路５の磁気
ギャップ１１との間にある程度長い距離（５〜８ｍｍ）
が必要となるため、ボイスコイル１０としてはコイルボ
ビン８が必要となり、振動系質量が増加していた。In such a dome-shaped speaker, there is a certain long distance (5 to 8 mm) between the coupling part of the dome-shaped diaphragm 7 with the voice coil 10 and the magnetic gap 11 of the magnetic circuit 5.
Therefore, the coil bobbin 8 is required as the voice coil 10, which increases the mass of the vibration system.
このコイルボビン８の重量は材質によっても異なるが、
平均的にみて３０〜１００ｍｇにもなり、ドーム形振動
板１の重量の３０％以上を占め、高音域まで平坦な音響
再生を行なうことができないものであった。The weight of this coil bobbin 8 varies depending on the material, but
On average, it weighs 30 to 100 mg, accounting for more than 30% of the weight of the dome-shaped diaphragm 1, making it impossible to reproduce flat sound up to the high frequency range.
しかも、コイルボビン８もコイル９とともに磁気ギャッ
プ１１にはまりこむため、コイルボビン８の厚み、通常
５０ ｕｍ〜１１００ｕ分だけ磁気ギャップ１１を広く
する必要があり、磁気ギャップ１１における導体占積率
が低下して大きなエネルギーを有するマグネット３が磁
気回路５に必要となり、コスト面で不利になる欠点があ
った。Moreover, since the coil bobbin 8 also fits into the magnetic gap 11 along with the coil 9, it is necessary to widen the magnetic gap 11 by the thickness of the coil bobbin 8, which is usually 50 um to 1100 μm, and the conductor space factor in the magnetic gap 11 decreases. A magnet 3 having large energy is required for the magnetic circuit 5, which is disadvantageous in terms of cost.
本発明は以上のような従来の欠点を除去するものである
。The present invention eliminates the drawbacks of the prior art as described above.
以下、本発明の実施例を図面第３図〜第５図により説明
する。Embodiments of the present invention will be described below with reference to FIGS. 3 to 5.
１３は磁気回路で、この磁気回路１３はセンターポール
１４を有するプレート１５、リング状のマグネット１６
、同じくリング状の上部プレート１７によって構成され
ている。13 is a magnetic circuit, and this magnetic circuit 13 includes a plate 15 having a center pole 14 and a ring-shaped magnet 16.
, is also constituted by a ring-shaped upper plate 17.
この磁気回路１３上には薄いリング１８が取付けられ、
このリング１８上には上方への半円状コルゲーションを
形成したエツジ１９の周縁部が接着結合されている。A thin ring 18 is attached on this magnetic circuit 13,
On this ring 18 the peripheral edge of an edge 19 forming an upward semicircular corrugation is adhesively bonded.
このエツジ１９にはドーム形振動板２０の周縁部が接着
結合されている。A peripheral portion of a dome-shaped diaphragm 20 is adhesively bonded to this edge 19.
このドーム形振動板２０は中央ｌこドーム部２１をもち
、このドーム部２１の周縁部にドーム部２１を形成する
ための立上り部２２をもち、この立上り部２２と連続し
て平坦部２３をもち、この平坦部２３の外周に立下り部
２４を設けて構成され、上記エツジ１９はこの平坦部２
３の上面に接着結合されている。This dome-shaped diaphragm 20 has a central dome part 21, a rising part 22 for forming the dome part 21 on the peripheral edge of this dome part 21, and a flat part 23 continuous with this rising part 22. The edge 19 is formed by providing a falling part 24 on the outer periphery of this flat part 23.
It is adhesively bonded to the top surface of 3.
また、上記平坦部２３の最大外径寸法ｄｏを磁気回路１
３の上部プレート１７の内径寸法、つまり磁気ギャップ
の外径寸法ＤＩｇｏに対してｄｏ＜ＤＩｇｏ となる
ようにする。In addition, the maximum outer diameter dimension do of the flat portion 23 is determined by the magnetic circuit 1
With respect to the inner diameter dimension of the upper plate 17 of No. 3, that is, the outer diameter dimension DIgo of the magnetic gap, do<DIgo.
さらに、上記平坦部２３の内径寸法ｄｉを、磁気回路１
３のセンターポール１４の外径寸法、つまり磁気ギャッ
プの内径寸法Ｄ１ｇｉに対してｄｉ＞Ｄｌｇｉ とな
るように構成しである。Furthermore, the inner diameter di of the flat portion 23 is set to the magnetic circuit 1
The structure is such that di>Dlgi with respect to the outer diameter dimension of the center pole 14 of No. 3, that is, the inner diameter dimension D1gi of the magnetic gap.
そして、この平坦部２３の下面には平角線のみを巻回し
て構成したボイスコイル２５が立下り部２４に上部外用
を位置決めされて接着などで結合されている。A voice coil 25 formed by winding only a rectangular wire is connected to the lower surface of the flat part 23 by adhesive or the like, with the upper part externally positioned at the falling part 24.
このボイスコイル２５は上記磁気回路１３の磁気ギャッ
プ２６Ｉこはまりこんでいる。The voice coil 25 fits into the magnetic gap 26I of the magnetic circuit 13.
また、上記磁気回路１３の上部プレート１７上にはキャ
ビネットなどに取付けるためのバッフル板２７が結合さ
れている。Furthermore, a baffle plate 27 for attachment to a cabinet or the like is coupled to the upper plate 17 of the magnetic circuit 13.
さらに、上記ボイスコイル２５のリード線は、ドーム形
振動板２０の平坦部２３に孔を設けて引出し、エツジ１
９に沿って外部ターミナルまで引出す。Furthermore, the lead wire of the voice coil 25 is drawn out through a hole provided in the flat part 23 of the dome-shaped diaphragm 20, and the lead wire is pulled out from the edge 1.
9 to the external terminal.
以上のように本発明のドーム型スピーカは構成されるた
め、ボイスコイルとしてコイルボビンが不必要となり、
振動系質量の軽減化が計れて高音域まで平坦な音警再生
が可能となり、磁気ギャップ部でのコイルの導線占積率
も高めることができ、高能率化が計れ、また磁気ギャッ
プをコイルボビンの厚み分だけ狭めることができて磁気
回路のマグネットとしてもエネルギーの小さなものでよ
く、コストの・低減化も計れるなどの数多くの利点が得
られ工業的価値の大なるものである。Since the dome-shaped speaker of the present invention is configured as described above, a coil bobbin is not required as a voice coil.
The mass of the vibration system can be reduced, making it possible to reproduce flat sounds up to the high frequency range. The space factor of the coil conductor in the magnetic gap can also be increased, increasing efficiency. It is of great industrial value because it can be made narrower by the thickness, requires less energy to be used as a magnet in a magnetic circuit, and can also reduce costs.
なお、上記実施例でボイスコイルとして平角線で構成す
るものについてのみ説明したが断面円形の導線のみによ
って接着剤でリング状に巻回成形′したボイスコイルと
することもできる。In the above embodiment, only the voice coil made of rectangular wire has been described, but the voice coil may be formed by winding and molding only a conductive wire having a circular cross section into a ring shape with adhesive.
第１図は従来のドーム型スピーカの断面図、第２図は同
要部の拡大断面図、第３図は本発明のドーム型スピーカ
の一実施例を示す断面図、第４図は同要部拡大断面図、
第５図は同ドーム形振動板の要部断面図である。
１３・・・・・−磁気回路、１８・・・・−・リング、
１９・・・・・・エツジ、２０・・・・・・ドーム形振
動板、２１・・・・・・ドーム部、２２・・・・・・立
上り部、２３・・・・・・平坦部、２４・・・・・・立
下り部、２５・・・・・・ボイスコイル、２６・・・・
・・磁気ギャップ。Fig. 1 is a sectional view of a conventional dome-shaped speaker, Fig. 2 is an enlarged sectional view of the same essential parts, Fig. 3 is a sectional view showing an embodiment of the dome-shaped speaker of the present invention, and Fig. 4 is the same main part. Enlarged sectional view,
FIG. 5 is a sectional view of a main part of the dome-shaped diaphragm. 13...-magnetic circuit, 18...-ring,
19...Edge, 20...Dome-shaped diaphragm, 21...Dome portion, 22...Rising portion, 23...Flat portion , 24...Falling part, 25...Voice coil, 26...
...magnetic gap.
Claims (1)
ルを結合したドーム形振動板よりなるドーム型スピーカ
において、上記ドーム形振動板としてドーム部の立上り
部に連続して磁気ギャップの内外径間の範囲内に存在す
る寸法の平坦部を設け、この平坦部の下面に導線のみで
構成したボイスコイルの上端を結合し、この平坦部の上
面にエツジを結合したことを特徴とするドーム型スピー
カ。 ２ ドーム形振動板の平坦部の周縁部に立下り部を設け
てなる特許請求の範囲第１項記載のドーム型スピーカ。[Scope of Claims] 1. A dome-shaped speaker consisting of a dome-shaped diaphragm coupled with a voice coil fitted into a magnetic gap of a magnetic circuit, wherein the dome-shaped diaphragm has a magnetic gap continuous to a rising part of the dome part. A flat part with dimensions existing within the range of the inner and outer diameters is provided, the upper end of the voice coil made of only conductive wire is connected to the lower surface of this flat part, and an edge is connected to the upper surface of this flat part. Dome speaker. 2. The dome-shaped speaker according to claim 1, wherein a falling portion is provided on the peripheral edge of the flat portion of the dome-shaped diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10060878A JPS5943040B2 (en) | 1978-08-17 | 1978-08-17 | dome speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10060878A JPS5943040B2 (en) | 1978-08-17 | 1978-08-17 | dome speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5527724A JPS5527724A (en) | 1980-02-28 |
| JPS5943040B2 true JPS5943040B2 (en) | 1984-10-19 |
Family
ID=14278557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10060878A Expired JPS5943040B2 (en) | 1978-08-17 | 1978-08-17 | dome speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5943040B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0320599U (en) * | 1989-07-07 | 1991-02-28 | ||
| JPH06237500A (en) * | 1993-11-16 | 1994-08-23 | Sony Corp | Electroacoustic transducer |
-
1978
- 1978-08-17 JP JP10060878A patent/JPS5943040B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5527724A (en) | 1980-02-28 |
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