JPS62120199A - Headphone device - Google Patents

Headphone device

Info

Publication number
JPS62120199A
JPS62120199A JP26011285A JP26011285A JPS62120199A JP S62120199 A JPS62120199 A JP S62120199A JP 26011285 A JP26011285 A JP 26011285A JP 26011285 A JP26011285 A JP 26011285A JP S62120199 A JPS62120199 A JP S62120199A
Authority
JP
Japan
Prior art keywords
magnet
voice coil
high frequency
yoke
frequency characteristic
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
JP26011285A
Other languages
Japanese (ja)
Inventor
Takashi Yamamoto
隆 山本
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP26011285A priority Critical patent/JPS62120199A/en
Publication of JPS62120199A publication Critical patent/JPS62120199A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To change a resonance frequency by a cavity space and to limit the height of a gain of a high frequency characteristic by changing the size or the number of apertures opened in a bottom part of a magnet yoke on which a voice coil is set. CONSTITUTION:The voice coil 3 is set between a ferrite magnet 2 and the magnet yoke 1. On the bottom surface of the yoke 1, the aperture 4 for lowering the cavity resonance effect and improving the high frequency characteristic is provided. By externally bonding acoustic damping materials to the size or the number of the apertures 4 or the parts of the apertures 4, a required frequency characteristic can be obtained. Thereby, the resonance frequency by the cavity space is changed and to height of the gain of the high frequency characteristic is suppressed.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、音響用のヘッドホン装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an audio headphone device.

従来の技術 一般に、インナーイヤー型ヘッドホンのうち外磁型ヘッ
ドホンは、安価なフェライトマグネットを用いたヘッド
ホンで多く用いられている。以下、第２図に基ずき従来
のヘッドホンについて説明する。第２図において、１９
はマグネット、１８はマグネットヨークであり、その空
隙にボイスコイル１０が配置されている。１６はこの空
隙を示して訃り、この空隙は音響特性全決定′１′る要
Ａ・、を有する。ボイスコイル１ｏを支持するボビン１
４には振動板１１が接合されており、その振動板１１の
外シー」がフレーム１２に固定されている。このヘッド
ホンユニットはその前面に多数の音孔を有する支持板１
５が装着され、その支持板１５にバッド１３が取付けら
れている１、 発明が解決しようとする問題点 ところが、このような外磁型マグイ・ノドを用いるイン
ナーイヤタイプのヘッドホンは、希土類マグネットに比
べ磁力が弱いフェライトマグネノｔ□が用いられており
、磁力を高めるために高さ方向に比１咬的高くマグネッ
ト厚をとっている。この厚さ（は厚くなるほど、これに
より構成される空隙部の空間体積が大きくなり、これに
相当する空胴共振が生じ、深くなればなるほど空胴共振
周波数は低い周波な々となり、可聴周波数の高域周波数
成分に強く影響を与える。（ふつう３〜ｓ　Ｋ　Ｉｈ　
）この結果、磁力の弱い外ａ型フェライトマグネット−
で用いたインナーイヤーメイプの−＼、ノドホンでは、
可聴周波数特性の高域周波数特性を低下させるという問
題点があった。2. Description of the Related Art In general, among inner-ear headphones, external magnetic headphones are often used as headphones that use inexpensive ferrite magnets. Hereinafter, a conventional headphone will be explained based on FIG. 2. In Figure 2, 19
18 is a magnet, and 18 is a magnet yoke, and the voice coil 10 is arranged in the gap between them. Reference numeral 16 indicates this gap, and this gap has a characteristic A which completely determines its acoustic characteristics. Bobbin 1 supporting voice coil 1o
A diaphragm 11 is joined to the diaphragm 4, and the outer sheath of the diaphragm 11 is fixed to a frame 12. This headphone unit has a support plate 1 that has a large number of sound holes on its front surface.
5 is attached, and the pad 13 is attached to the support plate 15. 1. Problems to be Solved by the Invention However, such inner-ear type headphones that use an external magnetic type Magui throat do not have a rare earth magnet. Ferrite magneto t□, which has a comparatively weaker magnetic force, is used, and in order to increase the magnetic force, the magnet thickness is made comparatively one inch higher in the height direction. The thicker this thickness, the larger the spatial volume of the cavity formed by it, and the corresponding cavity resonance occurs, and the deeper it gets, the lower the cavity resonance frequency becomes. Strongly affects high frequency components.(Usually 3~s K Ih
) As a result, the outer a-type ferrite magnet with weak magnetic force -
The inner ear makeup used in -＼, Nodohon,
There was a problem in that the high frequency characteristics of the audible frequency characteristics were degraded.

この空胴共振を下げる方策とし２ては、マグネットとマ
グネットヨーク間の距離を小さくするか、マグネットの
磁力を高めたものを使用するなどが考えられるが、この
対応による位＠精度を高めるだめの作業性が悪くなった
り、マグネットコストを高めることによりコストアップ
の大きな要因となっていた。As a second measure to reduce this cavity resonance, it is possible to reduce the distance between the magnet and the magnet yoke, or to use a magnet with increased magnetic force. This has been a major factor in cost increases due to poor workability and increased magnet costs.

本発明はこれらの欠点を解消するため、簡単な方法で、
空胴共振周波数を高めたり、空胴共振周波数のＱを下げ
ることを可能にすることができるヘッドホン装置を提供
し２ようとするものである。In order to overcome these drawbacks, the present invention uses a simple method to
It is an object of the present invention to provide a headphone device that can increase the cavity resonance frequency or lower the Q of the cavity resonance frequency.

問題点を解決するための手段 本発明のヘッドホン装置は、フェライトマグネットを使
用した外磁型ヘッドホンのマグネットヨークとマグネッ
トの間の空間部にボイスコイルを設置し、このマグネッ
トヨークの底面に空胴共振効果を低下さ（−１゛高域彼
ぬ々特性（７”）改善（ｒ　ＯｇＪ　；’、、べ・（孔
を、没シリたことを！侍長とするも？７′）である１、
作用 本発明のヘッドホン装置は、ボイスコイルを設置したマ
グネノトコ〜、・りの底部にあける孔の太きさや数を変
化させることにより、この空、胴空間による共振周波数
を変化させることができ、もって高域特性の利得の高さ
を抑え、結果とし２て可聴高周波領域まで平坦な特性を
得ること全可能にするものである。Means for Solving the Problems The headphone device of the present invention includes a voice coil installed in the space between the magnet yoke of an external magnetic type headphone using a ferrite magnet, and a cavity resonator installed on the bottom surface of the magnet yoke. The effect is lowered (-1゛High range characteristics (7'')) Improved (r OgJ ;',, Be・(The hole was destroyed! I made it a corporal? 7') is 1 ,
Function: The headphone device of the present invention can change the resonance frequency of the cavity and body space by changing the thickness and number of holes made at the bottom of the magnetocoat where the voice coil is installed. This suppresses the height of the gain in the high frequency characteristics, and as a result, it is possible to obtain flat characteristics up to the audible high frequency region.

実施例 以下、本発明の一実施例のヘッドホンを図面を参照して
説明する。第１図は、本発明の一実施例を示し、第１図
において、ノ毛う・イトマグネット２とマグネットヨー
ク１の間にボイスコイル３が設置されている。マグネッ
トヨーク１の底部に）１０気孔４を周回して設け−Ｃあ
る。ボイスコイル３を支持するボビンには振動板５が接
合されて：１′、・す、その振動板６の外周がフレーム
了に堰付けられている。このヘッドホンユニ７．・トは
多数の音孔を有する支持板９に取付けられ、その支持板
９にパッド８が設けられている。Embodiment Hereinafter, a headphone according to an embodiment of the present invention will be explained with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which a voice coil 3 is installed between a magnet 2 and a magnet yoke 1. In FIG. At the bottom of the magnet yoke 1, 10 holes 4 are provided around the bottom. A diaphragm 5 is joined to the bobbin that supports the voice coil 3, and the outer periphery of the diaphragm 6 is dammed to the frame. This headphone Uni 7. - The speaker is attached to a support plate 9 having a large number of sound holes, and a pad 8 is provided on the support plate 9.

このようにマグネットヨーク１の底部に孔４を設けたこ
とで、ヘッドホンの音響周波数特性を平坦化したり、高
域％性を改善させることができる。By providing the holes 4 at the bottom of the magnetic yoke 1 in this manner, it is possible to flatten the acoustic frequency characteristics of the headphones and improve the high frequency characteristics.

なお、この孔４０大きさや数、丑たけ孔の部分に音響制
動材を外面から貼りつけることにより必要な周波数特性
を得ることができる。Note that the necessary frequency characteristics can be obtained by changing the size and number of the holes 40 and by applying acoustic damping material to the outer surface of the holes.

発明の効果 以上のように本発明のヘッドホンは、外磁マグネットと
このマグネットヨークの空間底部に孔をあけることによ
りヘッドホンＯ音響特性のうち、高域部の共振周波数を
変えたり、その高さを自由に設定でき、ボイスコイルの
設置寸法を精度アップすることなく、また、高価な磁石
を使用することなく、音響特性を向上させることが出来
る実用上極めて有利なものである。Effects of the Invention As described above, the headphones of the present invention can change the resonance frequency of the high frequency region of the acoustic characteristics of the headphone O by making a hole at the bottom of the space between the outer magnetic magnet and the magnetic yoke, and the height thereof can be changed. This is extremely advantageous in practical terms because it can be set freely and the acoustic characteristics can be improved without increasing the precision of the voice coil installation dimensions or without using expensive magnets.

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

第１図は本発明の一実施例におけるヘッドホン装置の一
部断面斜視図、第２図は従来によ、・けるヘッドホン装
置の一部断面斜視図であて）。 １・・・・・・マグネットヨーク、２・・・・−７１ラ
イトマグネツト、３・・・・ボイスコイル、４・・−・
・辿気孔、５・・・・・振動板、６・・・・・空胴部。 代狸人の氏名　弁理士　中　尾　敏　男　ほか１名／−
一一？グ序ットヨーグ ２−ｍ−フルライトマグ字γト 第　１　図　　　　　　　　　　　　　　　　　　　　
　Ｊ−一−ノぢイスコづル４−ｉＬｉｌｒ ５−一〜　孤、１ｐＪＬ ６−−−　空８日卸 第２図FIG. 1 is a partially sectional perspective view of a headphone device according to an embodiment of the present invention, and FIG. 2 is a partially sectional perspective view of a conventional headphone device. 1... Magnet yoke, 2...-71 light magnet, 3... Voice coil, 4...
- Tracing air hole, 5... diaphragm, 6... cavity part. Name of representative: Patent attorney Toshio Nakao and 1 other person/-
Eleven? Figure 1
J-1-Nojiskoduru 4-iLilr 5-1~ Ko, 1pJL 6--- Sky 8 day wholesale figure 2

Claims (1)

【特許請求の範囲】[Claims] 　フェライトマグネットを用いた外磁型インナーイヤー
型ヘッドホンにおいて、フェライトマグネットとマグネ
ットヨークの空間にボイスコイルを設置してなり、かつ
上記マグネットヨークの底部に少なくとも、１個以上の
孔をあけたことを特徴とするヘッドホン装置。An external magnetic type inner-ear headphone using a ferrite magnet, characterized in that a voice coil is installed in the space between the ferrite magnet and the magnetic yoke, and at least one or more holes are bored in the bottom of the magnetic yoke. headphone device.
JP26011285A 1985-11-20 1985-11-20 Headphone device Pending JPS62120199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26011285A JPS62120199A (en) 1985-11-20 1985-11-20 Headphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26011285A JPS62120199A (en) 1985-11-20 1985-11-20 Headphone device

Publications (1)

Publication Number Publication Date
JPS62120199A true JPS62120199A (en) 1987-06-01

Family

ID=17343448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26011285A Pending JPS62120199A (en) 1985-11-20 1985-11-20 Headphone device

Country Status (1)

Country Link
JP (1) JPS62120199A (en)

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