JPS61278296A - Directional dynamic microphone unit - Google Patents
Directional dynamic microphone unitInfo
- Publication number
- JPS61278296A JPS61278296A JP12092485A JP12092485A JPS61278296A JP S61278296 A JPS61278296 A JP S61278296A JP 12092485 A JP12092485 A JP 12092485A JP 12092485 A JP12092485 A JP 12092485A JP S61278296 A JPS61278296 A JP S61278296A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic yoke
- pole piece
- rear case
- magnet
- microphone unit
- 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
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はボーカル用及びスピーチ用を主用途とする指向
性ダイナミックマイクロホンユニットに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a directional dynamic microphone unit mainly used for vocals and speeches.
従来の技術
第２図は従来の指向性ダイナミックマイクロホンユニッ
トの構成を、第３図はその部分詳細を示している。第２
図及び第３図に於いて、磁石１、ポールピース２、磁石
１及びホールピース２を一体モールドする合成樹脂３、
上部磁気ヨーク４、下部磁気ヨーク５、イコライザ６、
震動板７、震動板７に装着されたボイスコイル８、内部
音響フィルター９、後部音響フィルター１０、移相回路
音響フィルター１１、ポールピース２の外周２ ａ ｓ
上部磁気ヨーク４の内周４ ａ ｓ空隙部１２、合成樹
脂３のガイド面３ ａ ％合成樹脂３の突起部３ｂ。BACKGROUND OF THE INVENTION FIG. 2 shows the configuration of a conventional directional dynamic microphone unit, and FIG. 3 shows its partial details. Second
In the figures and FIG. 3, the magnet 1, the pole piece 2, the synthetic resin 3 in which the magnet 1 and the hole piece 2 are integrally molded,
Upper magnetic yoke 4, lower magnetic yoke 5, equalizer 6,
The vibration plate 7, the voice coil 8 attached to the vibration plate 7, the internal acoustic filter 9, the rear acoustic filter 10, the phase shift circuit acoustic filter 11, the outer circumference 2a s of the pole piece 2
Inner periphery 4a of upper magnetic yoke 4, gap 12, guide surface 3a of synthetic resin 3, protrusion 3b of synthetic resin 3.
上部磁気ヨーク４のガイド面４ｂにて構成されるもので
あった。It was composed of the guide surface 4b of the upper magnetic yoke 4.
発明が解決しようとする問題点
しかしながら、上記指向性ダイナミックマイクロホンユ
ニットに於いて、ポールピース２の外周２ａと上部磁気
ヨーク４の内周４ａにて形成される空隙部Ｌ２は、上部
磁気ヨーク４のガイド面４ｂと合成樹脂３のガイド面３
ａにて維持しているが、上部磁気ヨーク４のガイド面４
ｂと合成樹脂３のガイド面３ａの間には隙間が有り、磁
石１とポールピース２の質量が太き（、落下時に横すべ
りと共に合成樹脂３の突起部３ｂが変形し、空隙部１２
が音響性能劣化の方向に変化するという欠点があった。Problems to be Solved by the Invention However, in the above directional dynamic microphone unit, the gap L2 formed between the outer periphery 2a of the pole piece 2 and the inner periphery 4a of the upper magnetic yoke 4 is Guide surface 4b and guide surface 3 of synthetic resin 3
a, but the guide surface 4 of the upper magnetic yoke 4
There is a gap between the guide surface 3a of the synthetic resin 3 and the guide surface 3a of the synthetic resin 3, and the mass of the magnet 1 and the pole piece 2 is large.
However, there was a drawback in that the acoustic performance changed in the direction of deterioration of the acoustic performance.
本発明はこのような欠点を除去し、軽量にて耐落下衝撃
性能の優れた指向性ダイナミックマイクロホンユニット
を提供することを目的とするものである。An object of the present invention is to eliminate such drawbacks and provide a directional dynamic microphone unit that is lightweight and has excellent drop impact resistance.
問題点を解決するための手段
本発明は上記目的を達成するために偏平磁石、ポールピ
ース及び磁気ヨークの軽量化を図ると共に、偏平磁石、
磁気ヨーク、後部ケースをポールピースとともにネジ固
定したものである。Means for Solving the Problems In order to achieve the above object, the present invention aims to reduce the weight of a flat magnet, a pole piece, and a magnetic yoke.
The magnetic yoke and rear case are screwed together with the pole piece.
作用
そのために本発明によれば、落下衝撃等による空隙の変
化を防止できるものである。Therefore, according to the present invention, it is possible to prevent changes in the voids due to drop impact or the like.
実施例
第１図は本発明の一実施例の構成を示すものである。第
１図に於いて、１３は偏平磁石、１４はポールピース、
１５は凹部１５ａを有する磁気ヨーク、１６は後部ケー
ス、１７はポールピース１４、偏平磁石１３、磁気ヨー
ク１５及び後部ケース１６を一体的に固定するネジであ
る。６．７．８．９、ｌ０１１１、は夫々第２図と同様
であり、６はイコライザ、７は振動板、８は振動板７に
装着されたボイスコイル、９は内部フィルター、１０は
後部音響フィルター、１１は移相回路音響フィルターで
ある。１２はポールピース１４の外周及び磁気ヨーク１
５の凹部１５ａの内周にて形成される空隙部、１４ａは
ポールピース１４の中央部に設けられたネジ穴である。Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In Figure 1, 13 is a flat magnet, 14 is a pole piece,
15 is a magnetic yoke having a recessed portion 15a, 16 is a rear case, and 17 is a screw for integrally fixing the pole piece 14, the flat magnet 13, the magnetic yoke 15, and the rear case 16. 6.7.8.9, l0111 are the same as those shown in Fig. 2, 6 is an equalizer, 7 is a diaphragm, 8 is a voice coil attached to the diaphragm 7, 9 is an internal filter, and 10 is a rear acoustic The filter 11 is a phase shift circuit acoustic filter. 12 is the outer circumference of the pole piece 14 and the magnetic yoke 1
A gap 14a formed at the inner periphery of the recess 15a of No. 5 is a screw hole provided in the center of the pole piece 14.
この場合、ポールピース１４の外周と磁気ヨーク１５の
凹部１５ａの間の空隙部１２にリング状治具（図示せず
）を挿入し、空隙部１２の寸法を確保した後、後部ケー
ス１６、磁気ヨーク１５及び偏平磁石１３の中央部の穴
を経てネジ１７を貫通させ、ポールピース１４の中央部
に設けられたネジ穴１４ａにネジ１７をネジ込み、後部
ケース１６、磁気ヨーク１５、偏平磁石１３、ポールピ
ース１４を一体的に固定した後リング状治具を取り除く
ことにより、小形軽量にて耐落下衝撃に優れ、性能の安
定化と共に低コスト化を実現することができる。In this case, a ring-shaped jig (not shown) is inserted into the gap 12 between the outer periphery of the pole piece 14 and the recess 15a of the magnetic yoke 15 to ensure the dimensions of the gap 12, and then the rear case 16 and the magnetic Pass the screw 17 through the hole in the center of the yoke 15 and the flat magnet 13, screw the screw 17 into the screw hole 14a provided in the center of the pole piece 14, and then attach the rear case 16, the magnetic yoke 15, and the flat magnet 13. By removing the ring-shaped jig after integrally fixing the pole piece 14, it is possible to realize a compact and lightweight structure with excellent drop impact resistance, stable performance, and cost reduction.
発明の効果
本発明は上記実施例にて明らかなように、後部ケース、
磁気ヨーク及び偏平磁石をネジにてポールピースととも
に固定したものであり、小型軽量化及び耐落下衝撃性に
優れ、安定した性能にて低コストの指向性ダイナミック
マイクロホンユニットを実現することができるという効
果を有する。Effects of the Invention As is clear from the above embodiments, the present invention includes a rear case,
The magnetic yoke and flat magnet are fixed together with the pole piece using screws, and the effect is that it is possible to realize a low-cost directional dynamic microphone unit that is small and lightweight, has excellent drop impact resistance, and has stable performance. has.
第１図は本発明の一実施例に於ける指向性ダイナミック
マイクロホンユニットの側断面図、第２図は従来の指向
性ダイナミックマイクロホンユニットの側断面図、第３
図はその部分詳細図である。
１２・・・・・・空隙部、１３・・・・・・偏平磁石、
１４・・・・・・ポールピース、１５・・・・・・磁気
ヨーク、１６・・・・・・後部ケース、１７・・・・・
・ネジ。FIG. 1 is a side sectional view of a directional dynamic microphone unit according to an embodiment of the present invention, FIG. 2 is a side sectional view of a conventional directional dynamic microphone unit, and FIG.
The figure is a detailed view of the part. 12...Gap portion, 13...Flat magnet,
14... Pole piece, 15... Magnetic yoke, 16... Rear case, 17...
·screw.
Claims (1)
させ、前記磁気ヨークの後部に位置するケースとともに
ネジにて一体的に固定してなる指向性ダイナミックマイ
クロホンユニット。A directional dynamic microphone unit in which a pole piece and a flat magnet are placed in a recess of a magnetic yoke, and integrally fixed with a screw together with a case located at the rear of the magnetic yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12092485A JPS61278296A (en) | 1985-06-04 | 1985-06-04 | Directional dynamic microphone unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12092485A JPS61278296A (en) | 1985-06-04 | 1985-06-04 | Directional dynamic microphone unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61278296A true JPS61278296A (en) | 1986-12-09 |
Family
ID=14798358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12092485A Pending JPS61278296A (en) | 1985-06-04 | 1985-06-04 | Directional dynamic microphone unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61278296A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03218200A (en) * | 1990-01-17 | 1991-09-25 | Peavey Electron Corp | Microphone manufacturing method and microphone structure |
| EP1186352A1 (en) * | 1999-04-16 | 2002-03-13 | Namiki Seimitsu Houseki Kabushiki Kaisha | Vibrating actuator and feeding mechanism thereof |
-
1985
- 1985-06-04 JP JP12092485A patent/JPS61278296A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03218200A (en) * | 1990-01-17 | 1991-09-25 | Peavey Electron Corp | Microphone manufacturing method and microphone structure |
| EP1186352A1 (en) * | 1999-04-16 | 2002-03-13 | Namiki Seimitsu Houseki Kabushiki Kaisha | Vibrating actuator and feeding mechanism thereof |
| EP1186352A4 (en) * | 1999-04-16 | 2007-08-08 | Namiki Precision Jewel Co Ltd | Vibrating actuator and feeding mechanism thereof |
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