JPS60160298A - Passive radiator - Google Patents
Passive radiatorInfo
- Publication number
- JPS60160298A JPS60160298A JP1546684A JP1546684A JPS60160298A JP S60160298 A JPS60160298 A JP S60160298A JP 1546684 A JP1546684 A JP 1546684A JP 1546684 A JP1546684 A JP 1546684A JP S60160298 A JPS60160298 A JP S60160298A
- Authority
- JP
- Japan
- Prior art keywords
- low
- passive radiator
- flat diaphragm
- weight
- frequency
- 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
Links
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はスピーカシステムの低音特性を向上させる手段
として利用されるパッシブラジェータに関し、本発明は
特に平板振動板を使用したパッシブラジェータに関する
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a passive radiator used as a means for improving the bass characteristics of a speaker system, and particularly relates to a passive radiator using a flat diaphragm.
背景技術とその問題点
従来スピーカシステムとして低域再生用スピーカを設け
たキャビネットにこの低域再生用スピーカの外にボイス
コイルのない振動板即ちパッシブラジェータ別名ドロン
コーンを設ケバスレフ型のキャビネットのボートに相当
する作用を行い、コーンの共振によってスピーカシステ
ムの低音特性を向上する様にしたものが提案されている
。Background technology and its problems As a conventional speaker system, a diaphragm without a voice coil, that is, a passive radiator, also known as a drone cone, is installed outside the low-frequency reproduction speaker in a cabinet equipped with a speaker for low-frequency reproduction. A speaker system has been proposed that performs a similar function and improves the bass characteristics of a speaker system through cone resonance.
このパッシブラジェータとして第１図に示す如くハニカ
ムサンドウィッチ構造の平板振動板を使用することが考
えられる。第１図に於いて、（１）はキャビネット、（
２）はハニカムサンドウィッチ構造の正方形の平板振動
板を使用した低域再生用スピーカ、（３）はハニカムサ
ンドウィッチ構造の正方形の平板振動板を使用したパッ
シブラジェータである。It is conceivable to use a flat plate diaphragm having a honeycomb sandwich structure as shown in FIG. 1 as this passive radiator. In Figure 1, (1) is a cabinet, (
2) is a low frequency reproduction speaker using a square flat diaphragm with a honeycomb sandwich structure, and (3) is a passive radiator using a square flat diaphragm with a honeycomb sandwich structure.
斯る平板振動板を使用したパッシブラジェーター（３）
に於いては平板振動板（３ａ）を保持するのにその構造
上取付枠（３ｂ）にエツジ（３Ｃ）のみにより保持され
ているので、この為エツジ（３Ｃ）を十分に硬いものに
しなければならなかった。このエツジ（３Ｃ）を硬くす
ることはステイフネスが上がることとなり低域再生特性
に不利となっていた。例えば第２図破線ａに示す如く低
域共振周波数ｆ、が上がると共にこのＱｏが上昇する不
都合があった。Passive radiator using such a flat diaphragm (3)
In order to hold the flat plate diaphragm (3a), due to its structure, the mounting frame (3b) is held only by the edges (3C), so the edges (3C) must be made sufficiently hard. did not become. Making this edge (3C) harder increases stiffness, which is disadvantageous for low-frequency reproduction characteristics. For example, as shown by the broken line a in FIG. 2, as the low-frequency resonance frequency f increases, the Qo also increases.
発明の目的
本発明は斯る点に鑑みこの平板振動板を使用したパッシ
ブラジェータの低域再生特性を改善することを目的とす
る。OBJECTS OF THE INVENTION In view of the above, an object of the present invention is to improve the low-frequency reproduction characteristics of a passive radiator using this flat diaphragm.
発明の概要
本発明は平板振動板を使用したパッシブラジェータに於
いて、この平板振動板に弾性体を介して所定の重りを付
けた如き第２の振動系を設けたもので、斯る本発明に依
ればこのパッシブラジェータの低域再生特性を改善する
ことができる。Summary of the Invention The present invention provides a passive radiator using a flat diaphragm, in which a second vibration system is provided in which a predetermined weight is attached to the flat diaphragm via an elastic body. According to this method, the low frequency reproduction characteristics of this passive radiator can be improved.
実施例
以下第３図を参照しながら本発明パッシブラジェータの
一実施例につき説明しよう。この第３図に於いて第１図
に対応する部分に同一符号を付し、その詳細説明は省略
する。EXAMPLE Hereinafter, an example of the passive radiator of the present invention will be explained with reference to FIG. In FIG. 3, parts corresponding to those in FIG. 1 are designated by the same reference numerals, and detailed explanation thereof will be omitted.
本例に於いてはハニカムサンドウィッチ構造の正方形の
平板振動板（３ａ）を従来同様の硬いエツジ（３ｃ）に
より取付枠（３ｂ）に保持すると共にこの平板振動板（
３ａ）の裏面の中央部に円盤状に成形されたダンパー材
より成る支持体（４）を接着等により固定し、この支持
体（４）の中央部に所定重さの重り（５）を設ける。こ
の重り（５）の重さは低周波領域に於ける感度が所望周
波数で十分となる様に思考錯誤により決定する。この場
合支持体（４）は立上りダンノく−を構成する如くする
。又この場合支持体（４）はダンパー材ではなくその他
の弾性体であっても良い。In this example, a square flat plate diaphragm (3a) with a honeycomb sandwich structure is held on a mounting frame (3b) by a hard edge (3c) similar to the conventional one, and this flat plate diaphragm (
A support (4) made of a damper material formed into a disk shape is fixed to the center of the back surface of 3a) by adhesive or the like, and a weight (5) of a predetermined weight is provided at the center of this support (4). . The weight of this weight (5) is determined by trial and error so that the sensitivity in the low frequency region is sufficient at the desired frequency. In this case, the support (4) is configured to form a raised ridge. Further, in this case, the support body (4) may be other elastic body instead of the damper material.
その他は従来と同様に構成する。The rest of the structure is the same as before.
本例に依る低域再生特性は第３図曲線すに示す如く低域
共振周波数ｆＯが従来に比し低下すると共にＱｏの尖頭
値を押さえることができ、低域再生特性を改善すること
ができた。これは本例に於いては平板振動板（３ａ）に
弾性を有するダンパー材の支持体（４）を介して重り（
５）が取り付けられているので、全体の系が２自由度系
となり、平板振動板（３ａ）による低域共振周波数ｆ、
の他に弾性体に取付けられた重り（５）に依る共振周波
数が表われ、この弾性体に取付けられた重り（５）の共
振周波数の効果により従来の平板振動板を使用したパッ
シブラジェータの低域共振周波数ｆ、のＱｏの尖頭値が
押えられると共にこの低域共振周波数ｆ、が低域方向に
伸びるものと考えられる。As shown by the curve in Figure 3, the low-frequency reproduction characteristics according to this example lower the low-frequency resonance frequency fO compared to the conventional one, and can suppress the peak value of Qo, improving the low-frequency reproduction characteristics. did it. In this example, a weight (
5) is attached, the entire system becomes a two-degree-of-freedom system, and the low resonance frequency f due to the flat plate diaphragm (3a),
In addition, a resonance frequency due to the weight (5) attached to the elastic body appears, and the effect of the resonance frequency of the weight (5) attached to the elastic body lowers the frequency of the passive radiator using a conventional flat plate diaphragm. It is considered that the peak value of the Qo of the region resonance frequency f is suppressed and the low region resonance frequency f is extended in the lower region direction.
尚上述実施例に於いては弾性体より成る支持体（４）に
重り（５）を取り付けたが、この弾性体自身に所定の重
量を持たせる様にしても良いことは勿論である。又上述
実施例に於いては平板振動板としてハニカムサンドウィ
ッチ構造のものを使用したがこの代りに発泡スチロール
等その他の平板振動板が使用できることは勿論である。In the above embodiment, the weight (5) is attached to the support (4) made of an elastic body, but it goes without saying that the elastic body itself may have a predetermined weight. Further, in the above embodiment, a honeycomb sandwich structure was used as the flat diaphragm, but it is of course possible to use other flat diaphragms such as styrene foam instead.
又本発明は上述実施例に限ることなく本発明の要旨を逸
脱することなくその他種々の構成が取り得ることは勿論
である。Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and can take various other configurations without departing from the gist of the present invention.
発明の効果
本発明に依れば平板振動板を使用したパッシブラジェー
タに於いて、この平板振動板を支持するエツジが硬くと
も低域共振周波数ｆＯを十分低くすることができると共
にそのＱｏの尖頭値を押えることができ、この低音再生
特性を良好に改善することができる。Effects of the Invention According to the present invention, in a passive radiator using a flat diaphragm, even if the edges supporting the flat diaphragm are hard, the low-frequency resonance frequency fO can be made sufficiently low, and the peak of the Qo can be made sufficiently low. The value can be suppressed, and this bass reproduction characteristic can be favorably improved.
第１図は従来の平板振動板を使用したパッシブラジェー
タを使用したスピーカシステムの例を示す断面図、第２
図は本発明の説明に供する線図、第３図は本発明パッシ
ブラジェータの一実施例を示す断面図である。
（３ａ）は平板振動板、（３ｂ）は取付枠、（３ｃ）は
エツジ、（４）は弾性体より成る支持体、（５）は重り
である。
同 松隈秀盛ぺＳ・４．“；・３、
＋、、；：、：□Figure 1 is a cross-sectional view showing an example of a speaker system using a passive radiator using a conventional flat diaphragm.
The figure is a diagram for explaining the present invention, and FIG. 3 is a sectional view showing one embodiment of the passive radiator of the present invention. (3a) is a flat diaphragm, (3b) is a mounting frame, (3c) is an edge, (4) is a support made of an elastic body, and (5) is a weight. Same Hidemori Matsukuma S.4. “；・３、＋、、；：、：□
Claims (1)
、上記平板振動板に第２の振動系を設けたことを特徴と
するパッシブラジェータ。 ２、特許請求の範囲第１項記載のパッシブラジェータに
於いて、第２の振動系として平板振動板に弾性体を介し
て所定の重りを付けたことを特徴とするパッシブラジェ
ータ。[Scope of Claims] 1. A passive radiator using a flat diaphragm, characterized in that the flat diaphragm is provided with a second vibration system. 2. A passive radiator according to claim 1, characterized in that a predetermined weight is attached to the flat diaphragm via an elastic body as the second vibration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1546684A JPS60160298A (en) | 1984-01-31 | 1984-01-31 | Passive radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1546684A JPS60160298A (en) | 1984-01-31 | 1984-01-31 | Passive radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60160298A true JPS60160298A (en) | 1985-08-21 |
Family
ID=11889575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1546684A Pending JPS60160298A (en) | 1984-01-31 | 1984-01-31 | Passive radiator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60160298A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001074116A3 (en) * | 2000-03-28 | 2002-04-18 | Koninkl Philips Electronics Nv | Passive radiator having mass elements |
| WO2003071831A1 (en) * | 2002-02-25 | 2003-08-28 | Lyubomir Borisov Simeonov | Method for aligning frequency response of passive radiator loudspeaker system and passive radiator implementing this method |
| CN110719551A (en) * | 2019-08-20 | 2020-01-21 | 歌尔股份有限公司 | Acoustic device and electronic apparatus |
-
1984
- 1984-01-31 JP JP1546684A patent/JPS60160298A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001074116A3 (en) * | 2000-03-28 | 2002-04-18 | Koninkl Philips Electronics Nv | Passive radiator having mass elements |
| WO2003071831A1 (en) * | 2002-02-25 | 2003-08-28 | Lyubomir Borisov Simeonov | Method for aligning frequency response of passive radiator loudspeaker system and passive radiator implementing this method |
| CN110719551A (en) * | 2019-08-20 | 2020-01-21 | 歌尔股份有限公司 | Acoustic device and electronic apparatus |
| CN110719551B (en) * | 2019-08-20 | 2021-11-26 | 歌尔股份有限公司 | Acoustic device and electronic apparatus |
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