JPH0617425Y2 - Microphone anti-vibration device - Google Patents
Microphone anti-vibration deviceInfo
- Publication number
- JPH0617425Y2 JPH0617425Y2 JP15914187U JP15914187U JPH0617425Y2 JP H0617425 Y2 JPH0617425 Y2 JP H0617425Y2 JP 15914187 U JP15914187 U JP 15914187U JP 15914187 U JP15914187 U JP 15914187U JP H0617425 Y2 JPH0617425 Y2 JP H0617425Y2
- Authority
- JP
- Japan
- Prior art keywords
- case
- fulcrum
- elastic body
- microphone
- holder
- 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 - Lifetime
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【考案の詳細な説明】 [産業上の利用分野] この考案は、マイクロホンのケースとマイクロホンホル
ダーの間に設置されて、外部からの振動がケース内に収
納されたマイクロホンユニットに伝達されるのを防止す
るマイクロホン防振装置に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention is installed between a microphone case and a microphone holder to prevent external vibration from being transmitted to a microphone unit housed in the case. The present invention relates to a microphone anti-vibration device.
[従来の技術] 従来から、マイクロホンのケースを通じてマイクロホン
ユニットに伝達される外部からの振動を遮断するための
防振装置として、マイクロホンユニットの周囲にゴムの
様な弾性体シートを巻き付け、その状態でケースの中に
挿入した構造が一般的である。[Prior Art] Conventionally, as an anti-vibration device for blocking external vibration transmitted to the microphone unit through the case of the microphone, an elastic sheet such as rubber is wrapped around the microphone unit, and in that state The structure inserted in the case is common.
[解決しようとする問題点] この様な構造を有する従来のマイクロホン防振装置は、
ケースの内壁とマイクロホンユニットの外側面との間に
弾性体が充填された状態で介在し、弾性体の外周接触面
積が最も大きい状態で使用されているため弾性体の単位
面積当たりのストレスは小さく、従って振動吸収に寄与
するコンプライアンスが極めて低いのでケースに加わっ
た外部振動は充分吸収されることなくマイクロホンユニ
ットに直接伝達されるという問題があった。[Problems to be Solved] The conventional microphone anti-vibration device having such a structure is
Since the elastic body is inserted between the inner wall of the case and the outer surface of the microphone unit and the outer peripheral contact area of the elastic body is the largest, the stress per unit area of the elastic body is small. Therefore, since the compliance that contributes to the vibration absorption is extremely low, there is a problem that the external vibration applied to the case is directly transmitted to the microphone unit without being sufficiently absorbed.
そこで本考案は、ケースとホルダーとの間に介在する防
振用の弾性体が、ストレスが大きくなるような状態で使
用することにより上記従来例の有する問題点を解決する
ことを目的とする。Therefore, an object of the present invention is to solve the problems of the conventional example by using an anti-vibration elastic body interposed between a case and a holder in a state where stress increases.
[問題点を解決するための手段] 上記した目的を達成するための本考案に係るマイクロホ
ン防振装置を実施例を示す第1図〜第3図を用いて説明
すると、本考案は、内部にマイクロホンユニット1が収
納されると共に側面に音波導入口2b並びに後端面に貫通
口2aを有するケース2と、該ケース2の後端面内部に背
面を接して配置され且つ前面に円錐形の凹部3aと中心孔
3bとが形成されている弾性体3と、ケース2の内径より
外径が小で且つ該弾性体3の凹部3aに嵌合されて前記ケ
ース2の後端面と共に弾性体3を圧縮した状態で挟持す
る円錐体4と、前記貫通口2aを貫通して一端が該円錐体
4に固定されると共に他端がホルダー7に設けられた支
点Aに結合された引具5と、ホルダー7に設けられた他
の支点Bと前記ケース2の前端部との間に張力を持たせ
て張架した弾性索6とからなることを特徴とするマイク
ロホン防振装置である。[Means for Solving the Problems] A microphone anti-vibration device according to the present invention for achieving the above object will be described with reference to FIGS. 1 to 3 showing an embodiment. A case 2 in which the microphone unit 1 is housed and which has a sound wave introducing port 2b on the side surface and a through hole 2a on the rear end surface, and a conical recess 3a which is arranged inside the rear end surface of the case 2 so that the back surface is in contact with the front surface. Central hole
In a state in which the elastic body 3 having the 3b formed therein and the outer diameter smaller than the inner diameter of the case 2 are fitted into the recess 3a of the elastic body 3 and the elastic body 3 is compressed together with the rear end surface of the case 2. Provided on the holder 7, a conical body 4 to be sandwiched, a pulling tool 5 penetrating the through hole 2a, one end of which is fixed to the conical body 4 and the other end of which is coupled to a fulcrum A provided on the holder The microphone vibration isolation device is characterized by including an elastic cord 6 stretched by applying tension between the other fulcrum B and the front end portion of the case 2.
[作用] そして、此の様な構成のマイクロホン防振装置では、ケ
ース2が弾性索6によって前方に引付けられ、一方引具
5に固定されている円錐体4はケース2から離れた状態
のままこれに抗し、結果的に弾性体3はケース2の後端
部内壁と、円錐体4の背面とで圧縮され、特に円錐体頂
部近傍が当接した部位は大きく変型して局部的に大きな
ストレスが蓄積され、又、弾性索6は張力を付与されて
いるので、前記弾性体3と同様に大きなストレスが蓄積
されて、弾性体3、弾性索6共にその呈するコンプライ
アンスは大きくなって防振系の固有振動周波数は低くな
り、外部からホルダーを伝わって侵入する振動雑音を吸
収して遮断することが出来る。[Operation] In the microphone anti-vibration device having such a configuration, the case 2 is attracted forward by the elastic ropes 6, while the cone 4 fixed to the pulling tool 5 is separated from the case 2. Against this, as a result, the elastic body 3 is compressed by the inner wall of the rear end of the case 2 and the back surface of the conical body 4, and especially the portion where the vicinity of the top of the conical body abuts is greatly deformed and locally localized. Since a large amount of stress is accumulated and the elastic cord 6 is given a tension, a large amount of stress is accumulated in the same manner as the elastic body 3 and the compliance exhibited by both the elastic body 3 and the elastic cord 6 is increased to prevent it. The natural vibration frequency of the vibration system becomes low, and it is possible to absorb and block the vibration noise that enters from the outside through the holder.
特に第3図の実施例では、ホルダー7の支点Aと支点B
との間に設けられている伸縮部8を調節することで上記
両支点間の距離が変化し、弾性体3、並びに弾性索6の
呈するコンプライアンスの大きさを加減し、外部振動雑
音の状況によって防振系の固有振動周波数を変化させる
ことが可能である。Particularly, in the embodiment of FIG. 3, the fulcrum A and the fulcrum B of the holder 7 are
The distance between the fulcrums is changed by adjusting the expansion / contraction portion 8 provided between the elastic body 3 and the elastic cord 6, and the size of the compliance exhibited by the elastic body 3 and the elastic cord 6 is adjusted. It is possible to change the natural vibration frequency of the vibration isolation system.
[実施例] 第1図〜第2図により、本考案の第1実施例を詳述する
と、1はマイクロホンユニットで本実施例では直径10mm
のエレクトレット・コンデンサマイクロホンユニットを
使用している。[Embodiment] Referring to FIGS. 1 and 2, the first embodiment of the present invention will be described in detail. Reference numeral 1 denotes a microphone unit, which in this embodiment has a diameter of 10 mm.
I am using an electret condenser microphone unit.
2はケースで、円筒形で内径は前記マイクロホンユニッ
ト1の外径より大きく、側面に音波導入部2bが形成さ
れ、側壁部に螺合された後端部2cの中央に貫通口2aが形
成されている。Reference numeral 2 denotes a case, which is cylindrical and has an inner diameter larger than the outer diameter of the microphone unit 1, a sound wave introducing portion 2b is formed on a side surface, and a through hole 2a is formed at a center of a rear end portion 2c screwed to a side wall portion. ing.
マイクロホンユニット1は上記ケース2の円筒状部に収
納される。The microphone unit 1 is housed in the cylindrical portion of the case 2.
3は上記ケース2の内側後端部に配置された弾性体で発
泡樹脂からなり、前面には円錐型の凹部3aが形成され、
後面は前記ケース2の内側後端部に接し、前記貫通口2a
に一致させて中心孔3bが穿設されている。3 is an elastic body arranged at the inner rear end of the case 2 and is made of foamed resin, and a conical recess 3a is formed on the front surface.
The rear surface contacts the inner rear end of the case 2, and the through hole 2a
A central hole 3b is formed so as to coincide with.
4は前記弾性体3の凹部3aに嵌合されてケース2の後端
部2cと共に該弾性体3を保持する円錐体で、前記ケース
2の貫通口2a及び弾性体3の中心孔3bを貫通して一端部
がホルダー7の支点Aに止ネジ7bによってクランプ位置
調節可能に結合された引具5に固定され、ケース2がホ
ルダー7に対し前方に引寄せられた時、弾性体3を圧縮
するように作用する。Reference numeral 4 denotes a conical body which is fitted in the recess 3a of the elastic body 3 and holds the elastic body 3 together with the rear end portion 2c of the case 2 and which penetrates the through hole 2a of the case 2 and the central hole 3b of the elastic body 3. Then, one end is fixed to the fulcrum A of the holder 7 by the set screw 7b and is fixed to the pulling tool 5 which is adjustable in clamp position. When the case 2 is pulled forward with respect to the holder 7, the elastic body 3 is compressed. Act as you do.
弾性索6は、本実施例では合成ゴム索を使用し、一端が
ケース2の前端部に固定され、他端部がホルダー7の支
点Bとの間に張力を付与して張架され、ケース2がホル
ダー7に対し前方に引寄せられた状態でケースを保持す
る。The elastic cord 6 is a synthetic rubber cord in this embodiment, one end of which is fixed to the front end of the case 2 and the other end of which is stretched by applying tension between the fulcrum B of the holder 7 and the case. The case 2 is held in a state where 2 is pulled forward with respect to the holder 7.
従って、マイクロホンユニット1を内蔵したケース2
は、前後両端を夫々弾性体3と弾性索6で支持され、弾
性体3は圧縮状態で、弾性索6は伸長状態となり、共に
大きな内部応力を蔵した状態でマイクロホンユニット1
を内蔵したケース2をホルダー7から隔てて保持する。Therefore, the case 2 containing the microphone unit 1
Is supported at its front and rear ends by an elastic body 3 and an elastic cable 6, respectively. The elastic body 3 is in a compressed state, the elastic cable 6 is in an extended state, and both of them have a large internal stress.
The case 2 with the built-in is held apart from the holder 7.
第3図は第2実施例で、ホルダー7の支点Aと、支点B
が設けられているアーム7aの部分に伸縮部8を形成した
ものである。FIG. 3 shows a second embodiment, in which a fulcrum A and a fulcrum B of the holder 7 are provided.
The expansion / contraction part 8 is formed in the portion of the arm 7a provided with.
当該伸縮部8の構造は、アーム7aを2分し、夫々の端部
に正ネジと逆ネジを形成して管ネジ8aを螺合させ、該管
ネジ8aを回して支点Aと支点Bとの間隔を変化せしめる
構造である。The structure of the expansion / contraction part 8 is such that the arm 7a is divided into two parts, a forward screw and a reverse screw are formed at each end, and a pipe screw 8a is screwed in, and the pipe screw 8a is rotated to form a fulcrum A and a fulcrum B. It is a structure that changes the interval of.
又、伸縮部8の構造として、その他にアーム7aの付根部
を、第1図に示す引具5と同様な止ネジ構造としてもよ
い(図面省略)。Further, as the structure of the expansion / contraction part 8, the root part of the arm 7a may have a set screw structure similar to that of the pulling tool 5 shown in FIG. 1 (not shown).
いずれにしても、支点Aと支点Bとの間隔を変化するこ
とで、弾性体3、並びに弾性索6の圧縮度や伸長度を調
節して両者の呈するコンプライアンスの大きさを加減
し、防振系の固有振動周波数を変化させることが可能で
ある。In any case, by changing the distance between the fulcrum A and the fulcrum B, the compression degree and the extension degree of the elastic body 3 and the elastic cord 6 are adjusted to adjust the magnitude of the compliance exhibited by both, and to prevent vibration. It is possible to change the natural vibration frequency of the system.
更に第1実施例において、引具5のクランプ位置を変え
ることによっても同様の効果を得ることが出来る。Further, in the first embodiment, the same effect can be obtained by changing the clamp position of the pulling tool 5.
以上、本考案に係るマイクロホン防振装置について代表
的と思われる実施例を基に詳述したが、本考案によるマ
イクロホン防振装置の実施態様に於て、例えばマイクロ
ホンユニットの型式、弾性体並びに弾性索の形状、材質
等は上記実施例の構造に限定されるものではなく、マイ
クロホンユニットや夫々の弾性体とシールドケース並び
にケースとの係合関係が前記したクレーム記載の構成要
件を具備し、本考案にいう作用を呈し、以下に述べる効
果を有する限りにおいて、適宜改変して実施しうるもの
である。The microphone anti-vibration device according to the present invention has been described above in detail based on a typical example. In the embodiment of the microphone anti-vibration device according to the present invention, for example, the model of the microphone unit, the elastic body, and the elastic body are used. The shape, material, etc. of the rope are not limited to the structure of the above-mentioned embodiment, and the microphone unit or each elastic body and the shield case and the engagement relationship with the case have the constituent requirements described in the above claims, The present invention can be appropriately modified and carried out as long as it has the effect of the invention and has the effects described below.
[効果] 本考案に係るマイクロホン防振装置は以下に述べる効果
を有する。[Effect] The microphone anti-vibration device according to the present invention has the following effects.
(1)弾性体並びに弾性索には局部的に大きなストレスが
蓄積され、両者の呈するコンプライアンスは大きくなっ
て、ホルダーから伝播する振動雑音を吸収して完全に遮
断することが出来る。(1) Large stress is locally accumulated in the elastic body and the elastic rope, the compliance exhibited by both becomes large, and the vibration noise propagating from the holder can be absorbed and completely blocked.
(2)ホルダーの伸縮部を調節して弾性体並びに弾性索の
圧縮度や伸長度を調節してこれらの呈するコンプライア
ンスの大きさを加減し、防振系の固有振動周波数を変化
させ、外部振動雑音の状況によって防振系の遮断特性を
環境に合せることが出来る。(2) Adjusting the expandable part of the holder to adjust the compression degree and extension degree of the elastic body and elastic cord to adjust the magnitude of the compliance exhibited by these, change the natural vibration frequency of the vibration isolation system, and external vibration Depending on the noise situation, the isolation characteristics of the anti-vibration system can be adjusted to the environment.
(3)第4図に本考案実施例の外部振動遮断効果を周波数
特性によって示す。(3) Fig. 4 shows the frequency characteristic of the external vibration isolation effect of the embodiment of the present invention.
ホルダー7を加振機に取付け、実施例に於けるマイクロ
ホンユニットの位置に振動ピックアップを取り付けて、
広帯域の機械振動を印加して振動ピックアップの出力電
圧を記録した(実線で周波数特性を表示)。The holder 7 is attached to the vibration exciter, and the vibration pickup is attached to the position of the microphone unit in the embodiment.
A wideband mechanical vibration was applied and the output voltage of the vibration pickup was recorded (frequency characteristics are indicated by the solid line).
同時に加振機にも振動ピックアップを取付けて出力電圧
を記録し(点線で周波数特性を表示)、両者を比較し
た。At the same time, a vibration pickup was attached to the vibration exciter, and the output voltage was recorded (frequency characteristics are indicated by a dotted line), and both were compared.
実線で示した特性は、点線の特性と比較して、ほぼ全帯
域でレベルが低下していることから、その遮断効果を示
しており、本考案の構成がマイクロホン防振装置として
著しく優れていることが明瞭である。The characteristic shown by the solid line shows the blocking effect because the level is lowered in almost the entire band compared to the characteristic of the dotted line, and the configuration of the present invention is remarkably excellent as a microphone vibration isolator. It is clear.
以上の利点によって簡単な構造で、外部振動に影響され
ない高S/Nの測定が可能になるという効果を有するもの
である。With the above advantages, it is possible to perform a high S / N measurement with a simple structure that is not affected by external vibration.
第1図は本考案第1実施例の軸方向断面図、第2図は同
要部分解斜視図、第3図は第2実施例の要部軸方向断面
図、第4図は第1実施例の防振効果を示す周波数特性図
である。 1はマイクロホンユニット、2はケース、3は弾性体、
4は円錐体、5は引具、6は弾性索である。FIG. 1 is an axial sectional view of a first embodiment of the present invention, FIG. 2 is an exploded perspective view of an essential part of the same, FIG. 3 is an axial sectional view of an essential part of the second embodiment, and FIG. 4 is a first embodiment. It is a frequency characteristic figure which shows the image stabilizing effect of an example. 1 is a microphone unit, 2 is a case, 3 is an elastic body,
Reference numeral 4 is a cone, 5 is a pulling tool, and 6 is an elastic cord.
Claims (3)
されると共に側面に音波導入口(2b)並びに後端面に貫通
口(2a)を有するケース(2)と、該ケース(2)の後端
面内部に背面を接して配置され且つ前面に円錐形の凹部
(3a)と中心孔(3b)とが形成されている弾性体(3)と、
ケース(2)の内径より外形が小で且つ該弾性体(3)
の凹部(3a)に嵌合されて前記ケース(2)の後端面と共
に弾性体(3)を圧縮した状態で挟持する円錐体(4)
と、前記貫通口(2a)を貫通して一端が該円錐体(4)に
固定されると共に他端がホルダー(7)に設けられた支
点Aに結合されている引具(5)と、ホルダー(7)に
設けられた他の支点Bと前記ケース2の前端部との間に
張力を持たせて張架した弾性索(6)とからなることを
特徴とするマイクロホン防振装置。1. A case (2) having a microphone unit (1) housed therein, a sound wave introducing port (2b) on a side surface and a through hole (2a) on a rear end surface, and a rear end surface of the case (2). Conical recess located inside back to back and front
An elastic body (3) having (3a) and a central hole (3b),
The outer shape is smaller than the inner diameter of the case (2) and the elastic body (3)
(4) which is fitted in the concave portion (3a) of the case and holds the elastic body (3) together with the rear end surface of the case (2) in a compressed state.
And a pulling tool (5) which penetrates through the through hole (2a) and has one end fixed to the conical body (4) and the other end coupled to a fulcrum A provided on a holder (7), A microphone anti-vibration device comprising an elastic cord (6) stretched by applying tension between another fulcrum B provided on the holder (7) and the front end of the case 2.
距離を変化させるための伸縮部(8)が設けられている
ことを特徴とする実用新案登録請求の範囲第1項記載の
マイクロホン防振装置。2. A utility model registration claim 1 characterized in that an extension / contraction part (8) for changing the distance between the fulcrum A and the fulcrum B of the holder (7) is provided. Microphone anti-vibration device.
置調節可能に結合されていることを特徴とする実用新案
登録請求の範囲第1項記載のマイクロホン防振装置。3. A microphone antivibration device according to claim 1, wherein the pulling tool (5) is connected at a fulcrum A so that the clamp position can be adjusted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15914187U JPH0617425Y2 (en) | 1987-10-16 | 1987-10-16 | Microphone anti-vibration device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15914187U JPH0617425Y2 (en) | 1987-10-16 | 1987-10-16 | Microphone anti-vibration device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0164284U JPH0164284U (en) | 1989-04-25 |
JPH0617425Y2 true JPH0617425Y2 (en) | 1994-05-02 |
Family
ID=31440089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15914187U Expired - Lifetime JPH0617425Y2 (en) | 1987-10-16 | 1987-10-16 | Microphone anti-vibration device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0617425Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5304293B2 (en) * | 2009-02-10 | 2013-10-02 | ヤマハ株式会社 | Sound collector |
-
1987
- 1987-10-16 JP JP15914187U patent/JPH0617425Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0164284U (en) | 1989-04-25 |
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