JPS6118296A - Transducer - Google Patents

Transducer

Info

Publication number
JPS6118296A
JPS6118296A JP13933384A JP13933384A JPS6118296A JP S6118296 A JPS6118296 A JP S6118296A JP 13933384 A JP13933384 A JP 13933384A JP 13933384 A JP13933384 A JP 13933384A JP S6118296 A JPS6118296 A JP S6118296A
Authority
JP
Japan
Prior art keywords
magnetic circuit
casing
center
magnetic
fixed
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
JP13933384A
Other languages
Japanese (ja)
Inventor
Tadashi Itagaki
板垣 正
Hideto Gomi
五味 英仁
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP13933384A priority Critical patent/JPS6118296A/en
Publication of JPS6118296A publication Critical patent/JPS6118296A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

PURPOSE:To make the vertical vibration symmetrical with less distortion by providing a casing to which one end of a moving coil is fixed so as to apply push- pull operation to the magnetic circuit. CONSTITUTION:Top plates 14, 24 are fixed to magnets 13, 23, a magnetic gap is formed between the plates 14, 24 and center poles 11, 21 to constitute the magnetic circuit. The moving coils 16, 26 wound on bobbins 15, 25 are placed in the magnetic gap, the bobbins 15, 25 are fixed to the casing 10 and the surrounding of each magnetic circuit is supported to the casing 10 by dampers 17, 27. Thus, the center of gravity of the vibrating system, the center of drive point and the center of support point are arranged to one point, the magnetic circuit is subject to push-pull operation even at large amplitude and the vibration cancelling distortion is reproduced.

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

この発明はトランスデユーサに関づるものであり、とく
に、電気信号を機械振動に変換づるための電気fg号−
機械振#J変換装置に関するものである。
This invention relates to transducers, and in particular, to transducers for converting electrical signals into mechanical vibrations.
This relates to a mechanical vibration #J conversion device.

【従来の技術】[Conventional technology]

従来よく知られているトランスデユーサは、第3図に示
されているように、ケーシング1は7ランジをもち、こ
のフランジに取イ」穴2をもつ゛(おり、ケーシング1
に対してムービングコイルボビン3の一端部が接着固定
され、ムービングコイルボビン3にムービングコイル4
が巻装された構成になっている。このムービングコイル
4は磁気回路の磁気ギャップ中に位置していて、この磁
気回路はセンターポール5をもつヨーク6にマグネット
7が固定されており、さらに、このマクネッ[・1にト
ッププレート8が固定されC構成されていて、この磁気
回路がダンパ9によってケーシング1に対してその周囲
が支持されている。 このようなトランスデユーサでは、信号電流がムービン
グコイル4に供給されると磁気回路、くわしくはトップ
プレート8とヒンターボール5の空間において、ムービ
ングコイル4にローレンツ力が発生する。ムービングコ
イル4はケーシング1に固定されているので相対的に磁
気回路に前記力が加わや、ダンパ9を含む面に対して垂
直方向に作用する。 磁気回路は、ダンパ9によってケーシング1に宙吊り状
態に支持されているから、磁気回路の振動はケーシング
1に伝わり外部伝播される。 ところが、このようなトランスデユーサでは、振動源の
、I:、な!′F!最物が磁気回路自体であるために、
自己の重量を駆動する力を磁気回路自体の磁気力で発生
させる必要があり、所定の性能を得たいと所望しても、
最適保持力と最適重量の双方を備えた磁気回路を得るこ
とは大変困難であった。 また、熱の蓄積し易い磁気回路の放熱手段は、狭い空間
を動くことによる放熱と、ダンパによる伝導放熱の何れ
しかなく、許容入力の大きな振動コニット・、いわゆる
トランスデユーサを構成するには鼎点が多く存在してい
た。 さらに、磁気回路(振動ユニット)の重心を磁気回路の
支持点(ダンパ)の面上に位置させることが困難で、中
心位置の偏つl、:振動となる欠点があり、さらにまた
、大振幅の場合に上下非対称振幅となり、歪の大きい振
幅波形とな−るなどの多くの欠点があった。
As shown in FIG. 3, a conventionally well-known transducer has a casing 1 having seven flanges and a hole 2 in the flange.
One end of the moving coil bobbin 3 is adhesively fixed to the moving coil bobbin 3, and the moving coil 4 is attached to the moving coil bobbin 3.
It has a wrapped configuration. This moving coil 4 is located in the magnetic gap of a magnetic circuit, and this magnetic circuit has a magnet 7 fixed to a yoke 6 having a center pole 5, and a top plate 8 fixed to this magnetic circuit. This magnetic circuit is supported around the casing 1 by a damper 9. In such a transducer, when a signal current is supplied to the moving coil 4, a Lorentz force is generated in the moving coil 4 in the magnetic circuit, specifically in the space between the top plate 8 and the hinter ball 5. Since the moving coil 4 is fixed to the casing 1, the force is relatively applied to the magnetic circuit and acts perpendicularly to the surface including the damper 9. Since the magnetic circuit is suspended in the casing 1 by the damper 9, vibrations of the magnetic circuit are transmitted to the casing 1 and propagated to the outside. However, in such a transducer, the vibration source I:, na! 'F! Since the most important thing is the magnetic circuit itself,
It is necessary to generate the force that drives its own weight using the magnetic force of the magnetic circuit itself, and even if you want to obtain a specified performance,
It has been very difficult to obtain a magnetic circuit with both optimum holding force and optimum weight. In addition, the only means of heat dissipation for magnetic circuits, which tend to accumulate heat, are to dissipate heat by moving in a narrow space or conductively dissipate heat using a damper. There were many points. Furthermore, it is difficult to locate the center of gravity of the magnetic circuit (vibration unit) on the surface of the support point (damper) of the magnetic circuit, which causes the center position to be biased, resulting in vibration, and furthermore, there is a drawback that vibration occurs with large amplitude. In this case, there are many drawbacks, such as vertically asymmetrical amplitude and a highly distorted amplitude waveform.

【発明の目的】[Purpose of the invention]

そこでこの発明は、上述のような従来品の欠点を解決し
、歪が小さく、上下振動が対称振動となるようにしよう
とするものである。 【目的を達成するための技術的手段1 上述のような目的を達成するために、この発明は、同一
駆動源を互に対向配wiすることにより、振動重心、駆
動中心、支持中心を一抜させ、千1ケバランスのとれた
振動歪の少ない[・ランスデューサとしたことを特徴と
°するものである。 【実 施 例1 以下、この発明の構成を添付した第1図および第2図に
示す実施例によって説明する。先ず、第1図において符
号10はケーシングを示し、このケーシング10には、
センタボール11.21をもつボトムプレート12.2
2が互に一体化されており、これらのボトムプレート1
2.22にマグネット13.23が固定され、さらに、
各マグネット13.23にトッププレート14.24が
固定されると共に、ト・ツブプレート14.24と、セ
ンターボール11.21との間に磁気ギャップが形成さ
れ磁気回路が構成されている。 これらの磁気ギヤツブ品にボビン15.25に巻装され
たムービングコイル16.26が位置し−でおり、ボビ
ン15.25はケーシング10に固定されており、各磁
気回路は、ダンパ17.27によりその周囲がケーシン
グ10に支持されている。 よ/j 、第2図はケーシング10中に画110Aを形
成したもので、この画壁10Aに対してボビン15゜2
5の一喘が固定され!、:もので、第1実施例の倒立形
rあっ(、両壁10Aに対して対称配置したものである
。 このように構成されたトランスデユーサでは、磁気回路
が同じ動きをするから、ムービングコイル18.26に
逆位相の電気信号を入力づるか、あるいは、ムービング
lイル1t3.26の巻方向を互に逆にして用いる。 【発明の効果] 以上の説明から明らかなように、この発明のトランスデ
ユーサは、振動系の重心、駆動点の中心。 支持点の中心を同一点に配置した構成にしたから、大振
幅時においても磁気回路はプッシュブル動作を受け、互
に歪を打消し合った振動を再生することができる。
Therefore, the present invention aims to solve the above-mentioned drawbacks of the conventional products, and to make the distortion small and the vertical vibration symmetrical. [Technical Means for Achieving the Object 1] In order to achieve the above-mentioned object, the present invention dramatically improves the vibration center of gravity, drive center, and support center by arranging the same drive sources to face each other. It is characterized by a well-balanced transducer with low vibration distortion. [Embodiment 1] Hereinafter, the structure of the present invention will be explained with reference to an embodiment shown in the attached FIGS. 1 and 2. First, in FIG. 1, reference numeral 10 indicates a casing, and this casing 10 includes:
Bottom plate 12.2 with center ball 11.21
2 are integrated with each other, and these bottom plates 1
Magnet 13.23 is fixed to 2.22, and further,
A top plate 14.24 is fixed to each magnet 13.23, and a magnetic gap is formed between the top plate 14.24 and the center ball 11.21 to form a magnetic circuit. A moving coil 16.26 wound around a bobbin 15.25 is located on these magnetic gear parts, and the bobbin 15.25 is fixed to the casing 10, and each magnetic circuit is connected to a damper 17.27. The periphery thereof is supported by the casing 10. Figure 2 shows a picture 110A formed in the casing 10, and the bobbin is 15°2 with respect to the picture wall 10A.
5's pant is fixed! , : This is the inverted type of the first embodiment (, which is arranged symmetrically with respect to both walls 10A. In the transducer configured in this way, the magnetic circuits move in the same way, so the moving Either electrical signals of opposite phases are input to the coils 18.26, or the winding directions of the moving coils 1t3.26 are reversed. [Effects of the Invention] As is clear from the above description, the present invention The transducer is the center of gravity of the vibration system and the center of the drive point.Since the centers of the support points are arranged at the same point, the magnetic circuit receives push-pull action even at large amplitudes, mutually canceling out distortion. It is possible to reproduce the vibrations that match each other.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図および第2図はこの発明のトランスデユーサの側
断面図、第3図は従来のトランスデユーサの側断面図で
ある。 10・・・ケーシング、11.21・・・センターボー
ル、12゜22・・・ボトムプレート、13.23・・
・ングネツ[・、14゜24・・・トップフレート−1
15,25・・・ボビン、16.26・・・ムービング
コイル。
1 and 2 are side sectional views of a transducer of the present invention, and FIG. 3 is a side sectional view of a conventional transducer. 10...Casing, 11.21...Center ball, 12゜22...Bottom plate, 13.23...
・Ngunets [・, 14°24...Top Freight -1
15, 25... Bobbin, 16.26... Moving coil.

Claims (1)

【特許請求の範囲】[Claims] (1)ケーシング中に収容された磁気回路と、この磁気
回路の磁気ギャップに位置するムービングコイルとを備
えるトランスデューサにおいて、ケーシング内に互に面
対称配置された2つの磁気回路と、この磁気回路の磁気
ギャップに配置されているムービングコイルと、このム
ービングコイルのボビンの一端部が固定されているケー
シングとを備え、磁気回路はプッシュブル動作されるよ
うに構成したことを特徴とするトランスデューサ。
(1) In a transducer that includes a magnetic circuit housed in a casing and a moving coil located in a magnetic gap between the magnetic circuits, two magnetic circuits arranged symmetrically to each other in the casing, and a moving coil located in a magnetic gap between the magnetic circuits. A transducer comprising a moving coil disposed in a magnetic gap and a casing to which one end of a bobbin of the moving coil is fixed, and the magnetic circuit is configured to be push-pull operated.
JP13933384A 1984-07-04 1984-07-04 Transducer Pending JPS6118296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13933384A JPS6118296A (en) 1984-07-04 1984-07-04 Transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13933384A JPS6118296A (en) 1984-07-04 1984-07-04 Transducer

Publications (1)

Publication Number Publication Date
JPS6118296A true JPS6118296A (en) 1986-01-27

Family

ID=15242874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13933384A Pending JPS6118296A (en) 1984-07-04 1984-07-04 Transducer

Country Status (1)

Country Link
JP (1) JPS6118296A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604816A (en) * 1991-07-25 1997-02-18 Kabushiki Kaisha Nippon Memorial Vibrator for producing a sensible vibration
EP1659824A3 (en) * 2004-11-18 2008-02-13 Pioneer Corporation Voice coil device and speaker device using the voice coil device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604816A (en) * 1991-07-25 1997-02-18 Kabushiki Kaisha Nippon Memorial Vibrator for producing a sensible vibration
EP1659824A3 (en) * 2004-11-18 2008-02-13 Pioneer Corporation Voice coil device and speaker device using the voice coil device

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