JP2001239211A - Multifunction type sounding body and producing method thereof - Google Patents

Multifunction type sounding body and producing method thereof

Info

Publication number
JP2001239211A
JP2001239211A JP2000052878A JP2000052878A JP2001239211A JP 2001239211 A JP2001239211 A JP 2001239211A JP 2000052878 A JP2000052878 A JP 2000052878A JP 2000052878 A JP2000052878 A JP 2000052878A JP 2001239211 A JP2001239211 A JP 2001239211A
Authority
JP
Japan
Prior art keywords
cover
sounding body
magnetic circuit
elastic member
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.)
Granted
Application number
JP2000052878A
Other languages
Japanese (ja)
Other versions
JP4553278B2 (en
Inventor
Takashi Kobayashi
小林  孝
Akira Yoneyama
昭 米山
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.)
Citizen Electronics Co Ltd
Original Assignee
Citizen Electronics 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 Citizen Electronics Co Ltd filed Critical Citizen Electronics Co Ltd
Priority to JP2000052878A priority Critical patent/JP4553278B2/en
Publication of JP2001239211A publication Critical patent/JP2001239211A/en
Application granted granted Critical
Publication of JP4553278B2 publication Critical patent/JP4553278B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a structure which improves the positioning precision of a magnetic circuit inside a cover 1 of a multifunction type sounding body and makes an adhesive unnecessary, and also provide a producing method therefor. SOLUTION: This multifunction type sounding body is provided with a cover, a diaphragm which is held by the cover, receives electromagnetic force of sound frequency and vibrates, and a magnetic circuit which is elastically supported at the cover by an elastic member, constitutes a vibration system of a relatively low frequency, contains a permanent magnet which gives a magnetic field for generating the electromagnetic force to the diaphragm and is relatively large in mass. In this sounding body, either the diaphragm or the magnetic circuit mainly corresponds and vibrates in accordance with electrical input of plural frequency bands. Therein, the multifunction sounding body has such a structure that the magnetic circuit is stuck to the elastic member which is insert-molded beforehand to the cover. Further, in the producing method, the elastic member formed by punching on metallic band material is insert-molded, the cover is formed and, thereafter, the forming body is detached from the band material.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は複数の周波数帯に対
して応答し、音響周波数あるいは更に低周波の振動を出
力する多機能型発音体の構造および製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and a method for manufacturing a multifunctional sounding body which responds to a plurality of frequency bands and outputs vibration at an acoustic frequency or a lower frequency.

【0002】[0002]

【従来の技術】例えば数100〜数kHzの音響周波数
の電気的入力に応答して音響信号を出力すると共に、1
0〜100Hz程度の低周波数の電気的入力にも応答し
て体感できる振動(バイブレーション)出力をも行う多
機能型発音体が知られている。これは1個の音響変換器
であるのに周波数帯の異なる複数種類の信号を発生でき
るために、携帯電話等の機器の小型化・低コスト化のた
めの手段としての有効性が高い。図5および図6に従来
例の多機能発音体の構造の概略を示す。
2. Description of the Related Art For example, an acoustic signal is output in response to an electric input having an acoustic frequency of several hundreds to several kHz, and
2. Description of the Related Art There is known a multifunctional sounding body that also performs vibration (vibration) output that can be sensed in response to an electrical input at a low frequency of about 0 to 100 Hz. Since this is a single acoustic transducer, it can generate a plurality of types of signals having different frequency bands, so that it is highly effective as a means for reducing the size and cost of devices such as mobile phones. 5 and 6 schematically show the structure of a conventional multifunctional sounding body.

【0003】図5は従来の多機能発音体の断面図であ
る。1はカバーで合成樹脂製の筐体であり略箱型をな
す。2は振動板で音響出力用のものであり、カバー1に
周縁部を固着され、ボイスコイル3が一体化されてい
る。5は円筒形の永久磁石であり、円筒の軸方向に磁化
され、高透磁率材料より成る円筒型カップ状のヨーク7
の中心部に固着されている。6はトッププレートでやは
り高透磁率材料より成る磁極片である。永久磁石5、ト
ッププレート6およびヨーク7は磁気回路を構成し、永
久磁石5が生成する磁束はトッププレート6の周囲側面
とヨーク7のカップ状の内縁との間のリング状の磁気空
隙に集中される。この磁気空隙内にはボイスコイル3が
挿入されており、ボイスコイルに音響周波数の信号電流
が流れると振動板2が振動し音響を発する。
FIG. 5 is a sectional view of a conventional multifunctional sounding body. Reference numeral 1 denotes a cover, which is a housing made of synthetic resin and has a substantially box shape. Reference numeral 2 denotes a diaphragm for outputting sound. The peripheral portion is fixed to the cover 1 and the voice coil 3 is integrated. Reference numeral 5 denotes a cylindrical permanent magnet, which is magnetized in the axial direction of the cylinder, and has a cylindrical cup-shaped yoke 7 made of a material having high magnetic permeability.
It is fixed to the center of. Reference numeral 6 denotes a top plate, which is a pole piece also made of a high magnetic permeability material. The permanent magnet 5, the top plate 6, and the yoke 7 constitute a magnetic circuit, and the magnetic flux generated by the permanent magnet 5 is concentrated in a ring-shaped magnetic gap between the peripheral side surface of the top plate 6 and the cup-shaped inner edge of the yoke 7. Is done. The voice coil 3 is inserted into the magnetic gap, and when a signal current of an acoustic frequency flows through the voice coil, the diaphragm 2 vibrates to emit sound.

【0004】図6(a)は従来例における磁気回路と一
体化されたサスペンションバネの平面図、(b)はその
断面図、(c)はそれが収容されるカバーの平面図であ
る。まず図6(a)、(b)において、8aは上サスペ
ンションバネ(振動板2側)、8bは下サスペンション
バネ(ヨーク4の底部側)であり、それぞれほぼ同形
で、弾力性の高い金属板から打抜かれており、中心穴と
円弧状の対称形状の2本の腕部を持ち、中心穴はヨーク
7の外周に圧入されている。2枚のサスペンションバネ
8a、8bは平行であり、かつ平面図上で90°異なる
方向を与えられている。また2枚のサスペンションバネ
の間にはリング状をなす付加質量9がヨーク7に嵌装さ
れ固着されている。
FIG. 6A is a plan view of a suspension spring integrated with a magnetic circuit in a conventional example, FIG. 6B is a cross-sectional view thereof, and FIG. 6C is a plan view of a cover in which it is housed. First, in FIGS. 6A and 6B, reference numeral 8a denotes an upper suspension spring (on the diaphragm 2 side), and 8b denotes a lower suspension spring (on the bottom side of the yoke 4). The center hole is press-fitted into the outer periphery of the yoke 7. The two suspension springs 8a and 8b are parallel and are given directions different by 90 ° on a plan view. A ring-shaped additional mass 9 is fitted to and fixed to the yoke 7 between the two suspension springs.

【0005】各サスペンションバネの各腕部は膨大した
形状の4個の先端部8cを有する。サスペンションバネ
と一体化した磁気回路を、振動板2を下向きにしてカバ
ー1の底部(図6(c)の上部)から落し込むと、各先
端部8cは箱型のカバー1の四隅に設けた支持部1e
(それぞれ各サスペンションバネに合わせた所定の高さ
を有する)にて受けられ、この部分に供給された接着剤
によって固着される。
[0005] Each arm of each suspension spring has four tips 8c of an enormous shape. When the magnetic circuit integrated with the suspension spring is dropped from the bottom of the cover 1 (upper part in FIG. 6C) with the diaphragm 2 facing downward, each tip 8c is provided at each of the four corners of the box-shaped cover 1. Support part 1e
(Each having a predetermined height corresponding to each suspension spring), and is fixed by an adhesive supplied to this portion.

【0006】その結果、磁気回路はカバー1の内部でサ
スペンションバネの4本の腕部により弾性的に懸架さ
れ、上下方向(磁気回路の軸方向)に所定の固有振動数
で振動することができる。付加質量9はその固有振動数
を体感に適した十分低い値とするための部材である。そ
こでボイスコイル3にこの固有振動数に十分近い周波数
の信号電流を供給すると、振動板2はその固有振動数が
高く不一致であるためほとんど振動せず、磁気回路のみ
がその軸方向に大きな振幅で振動する。その振動の反作
用はカバー1が固着されている携帯電話等の機器を振動
させ、ユーザーに感知させる。
As a result, the magnetic circuit is elastically suspended by the four arms of the suspension spring inside the cover 1, and can vibrate at a predetermined natural frequency in the vertical direction (axial direction of the magnetic circuit). . The additional mass 9 is a member for setting the natural frequency to a sufficiently low value suitable for the bodily sensation. Therefore, when a signal current having a frequency sufficiently close to the natural frequency is supplied to the voice coil 3, the diaphragm 2 hardly vibrates because its natural frequency is high and does not match, and only the magnetic circuit has a large amplitude in the axial direction. Vibrate. The reaction of the vibration causes a device such as a mobile phone to which the cover 1 is fixed to vibrate, and makes the user sense.

【0007】[0007]

【発明が解決しようとする課題】上記従来構造において
は下記の問題点が存在する。 (1)カバー1内部での磁気回路の位置決めを、サスペ
ンションバネの腕部の自由端である先端部8cとカバー
の支持部1eとの異形の嵌合で行うため、接着の位置精
度が出難い。例えば磁気回路の中心がカバーの中心に対
して偏心し易く、両者が接触してしまう可能性がある。 (2)接着剤は塗布量の管理が難しい。例えば接着剤が
内部の好ましくない場所へ流れ込んだりすることがあ
る。
The above-mentioned conventional structure has the following problems. (1) Since the positioning of the magnetic circuit inside the cover 1 is performed by fitting the distal end portion 8c, which is the free end of the arm portion of the suspension spring, to the support portion 1e of the cover, the positional accuracy of the adhesion is hardly obtained. . For example, the center of the magnetic circuit tends to be eccentric with respect to the center of the cover, and there is a possibility that both will come into contact. (2) It is difficult to control the amount of the adhesive applied. For example, the adhesive may flow into an undesirable place inside.

【0008】本発明の目的は、多機能型発音体におい
て、カバー、サスペンションバネ、および磁気回路の三
者の位置関係の精度を向上させることによって製品の歩
留りおよび信頼性を高め、また接着剤を使用しない構造
および製造法を提供することである。また他の目的は、
特に組立作業を簡略化して製造コストを低減しうる構造
および製造法を提供することである。
SUMMARY OF THE INVENTION It is an object of the present invention to improve the yield and reliability of products in a multifunctional sounding body by improving the accuracy of the positional relationship between a cover, a suspension spring, and a magnetic circuit, and to use an adhesive. The purpose is to provide a structure and a manufacturing method that are not used. Another purpose is
In particular, it is an object of the present invention to provide a structure and a manufacturing method capable of simplifying an assembling operation and reducing a manufacturing cost.

【0009】[0009]

【課題を解決するための手段】上記課題を解決するた
め、本発明の多機能型発音体の構造においては下記の特
徴を備える。
In order to solve the above problems, the structure of the multifunctional sounding body of the present invention has the following features.

【0010】(1)カバーと、該カバーに保持され音響
周波数の電磁力を受けて振動する振動板と、前記カバー
に弾性部材により弾性支持されて比較的低周波の振動系
を構成し、前記振動板に対して前記電磁力を発生するた
めの磁界を与える永久磁石を含み比較的質量の大なる磁
気回路とより成り、複数の周波数帯の電気的入力に対応
して前記振動板または前記磁気回路のいずれかが主に応
答して振動する多機能型発音体において、前記磁器回路
は、前記カバーに対してあらかじめインサートモールド
された前記弾性部材に対して固着されたこと。
(1) A cover, a vibrating plate held by the cover and vibrating by receiving an electromagnetic force of an acoustic frequency, and a relatively low-frequency vibration system elastically supported by an elastic member on the cover. A magnetic circuit having a relatively large mass including a permanent magnet for applying a magnetic field for generating the electromagnetic force to the diaphragm, wherein the diaphragm or the magnetic field corresponds to an electric input in a plurality of frequency bands. In a multifunctional sounding body in which one of the circuits vibrates mainly in response, the porcelain circuit is fixed to the elastic member which is insert-molded in advance to the cover.

【0011】また本発明の多機能型発音体の構造におい
ては更に下記の特徴を備えることがある。 (2)カバーと、該カバーに保持され音響周波数の電磁
力を受けて振動する振動板と、前記カバーに弾性部材に
より弾性支持されて比較的低周波の振動系を構成し、前
記振動板に対して前記電磁力を発生するための磁界を与
える永久磁石を含み比較的質量の大なる磁気回路とより
成り、複数の周波数帯の電気的入力に対応して前記振動
板または前記磁気回路のいずれかが主に応答して振動す
る多機能型発音体において、前記カバーは上下2体から
成り、それぞれ弾性部材をインサートモールドしている
と共に、一方のカバーは防磁リングをその一部が露出す
るようにインサートモールドしており、他方のカバーは
前記防磁リングの露出部が嵌装される凹部を有し、かつ
前記磁器回路は、前記カバーに対してあらかじめインサ
ートモールドされた前記弾性部材に対して固着されたこ
と。
The structure of the multifunctional sounding body of the present invention may further have the following features. (2) a cover, a diaphragm held by the cover and vibrating by receiving an electromagnetic force of an acoustic frequency, and a relatively low-frequency vibration system elastically supported by an elastic member on the cover to form a relatively low-frequency vibration system; A magnetic circuit having a relatively large mass including a permanent magnet for providing a magnetic field for generating the electromagnetic force, and any one of the diaphragm and the magnetic circuit corresponding to an electrical input in a plurality of frequency bands. In a multifunctional sounding body in which the main body vibrates mainly in response, the cover is composed of two upper and lower bodies, each of which is insert-molded with an elastic member, and one of the covers exposes a magnetic shield ring so that a part thereof is exposed. The other cover has a concave portion into which the exposed portion of the magnetic shield ring is fitted, and the porcelain circuit is insert-molded in advance with respect to the cover. That is secured to the elastic member.

【0012】上記課題を解決するため、本発明の多機能
型発音体の製造方法においては下記の特徴を備える。 (3)カバーと、該カバーに保持され音響周波数の電磁
力を受けて振動する振動板と、前記カバーに弾性部材に
より弾性支持されて比較的低周波の振動系を構成し、前
記振動板に対して前記電磁力を発生するための磁界を与
える永久磁石を含み比較的質量の大なる磁気回路とより
成り、複数の周波数帯の電気的入力に対応して前記振動
板または前記磁気回路のいずれかが主に応答して振動す
る多機能型発音体の製造方法において、前記弾性部材は
帯状の金属板を素材とし、該素材には予め所定の間隔で
位置決め穴および周囲の枠状部分と連結部で連結された
支持バネが打抜き形成されており、前記素材に対して前
記位置決め穴を基準として成形金型内で前記支持バネを
合成樹脂にてインサートモールドし、その後の工程にお
いて前記連結部を切断することによって前記支持バネと
前記カバーとを一体化したこと。
In order to solve the above problems, a method for manufacturing a multifunctional sounding body according to the present invention has the following features. (3) a cover, a vibrating plate held by the cover and vibrating by receiving an electromagnetic force of an acoustic frequency, and a relatively low-frequency vibrating system elastically supported by an elastic member on the cover. A magnetic circuit having a relatively large mass including a permanent magnet for providing a magnetic field for generating the electromagnetic force, and any one of the diaphragm and the magnetic circuit corresponding to an electrical input in a plurality of frequency bands. In the method for manufacturing a multifunctional sounding body in which the vibration mainly responds, the elastic member is made of a band-shaped metal plate, and the material is connected to a positioning hole and a surrounding frame-shaped portion at predetermined intervals in advance. A support spring connected by a part is formed by punching, and the support spring is insert-molded with a synthetic resin in a molding die based on the positioning hole with respect to the material, and the connection part is formed in a subsequent step. It was integrated with the cover and the support spring by disconnection.

【0013】[0013]

【発明の実施の形態】図1は本発明の実施の形態の一例
である多機能型発音体の断面図である。図5および図6
で既に説明したものと機能に共通性がある部分について
は同じ記号と名称を付して重複する説明を省略する。従
来例と以下の部分が主に異なる。 (1)永久磁石5が円筒形ではなくリング状(磁化は厚
み方向)であって磁気回路の外側を占め、いわゆる外磁
型の構造をなすこと。これに伴って従来例のヨーク7に
対応するポールピース4は高透磁率の軟磁性部分が外周
部ではなく芯の部分であること。またトッププレート6
も従来例と異なってリング状である。
FIG. 1 is a cross-sectional view of a multifunctional sounding body according to an embodiment of the present invention. 5 and 6
The same symbols and names are given to portions having functions common to those already described in, and redundant description will be omitted. The following parts are mainly different from the conventional example. (1) The permanent magnet 5 is not cylindrical but ring-shaped (magnetization is in the thickness direction) and occupies the outside of the magnetic circuit, and has a so-called external magnet type structure. Accordingly, in the pole piece 4 corresponding to the yoke 7 of the conventional example, the soft magnetic portion having high magnetic permeability is not the outer peripheral portion but the core portion. Also top plate 6
Also has a ring shape unlike the conventional example.

【0014】(2)合成樹脂製のカバー1が上下2体と
なり、上カバー1aと下カバー1bにはそれぞれ磁気回
路を弾性支持する弾性部材である、上サスペンションバ
ネ8a、下サスペンションバネ8bがインサートモール
ドによって一体化されていること。この構造およびその
ための加工法が本発明の眼目となる。またカバーの平面
形状が角形でなく円形である。上下カバーは多機能型発
音体の組立の際一体に接合される(上下の腕部は90°
向きを異ならせる)。その内部で磁気回路が上下サスペ
ンションバネの各腕部によって従来例同様に弾性的に懸
架される。
(2) An upper suspension spring 8a and a lower suspension spring 8b, which are elastic members for elastically supporting a magnetic circuit, are inserted into the upper cover 1a and the lower cover 1b, respectively. Be integrated by a mold. This structure and the processing method therefor are the subject of the present invention. The planar shape of the cover is not square but circular. The upper and lower covers are joined together when assembling the multifunctional sounding body (the upper and lower arms are 90 °
Make the direction different). Inside, the magnetic circuit is elastically suspended by the arms of the upper and lower suspension springs as in the conventional example.

【0015】(3)外磁型構造では大きな体積の永久磁
石を用いて強力な空隙磁束を得ることもできるが、永久
磁石から外側へ漏れる磁束も比較的多い傾向がある。そ
のため、永久磁石5の外周を高透磁率材料より成る防磁
リング10で囲み、漏洩磁束を防磁リングに集めてその
外側への漏洩を極力少なくしていること。なお本実施の
形態においては、防磁リング10は発音体の組立時にも
役割を持っている。
(3) In the external magnet type structure, a strong air gap magnetic flux can be obtained using a permanent magnet having a large volume, but the magnetic flux leaking outward from the permanent magnet tends to be relatively large. Therefore, the outer periphery of the permanent magnet 5 is surrounded by a magnetic shield ring 10 made of a material having a high magnetic permeability, and leakage magnetic flux is collected on the magnetic shield ring to minimize leakage to the outside. In the present embodiment, the magnetic shield ring 10 also has a role when assembling the sounding body.

【0016】図2(a)は上述の本発明の実施の形態の
一例における上カバーの平面図、(b)は同じく下カバ
ーの平面図で、いずれもサスペンションバネのインサー
トモールドを完了した状態を示している。上サスペンシ
ョンバネ8a、下サスペンションバネ8bはいずれも平
板状であり、内側および外側に同心のリング部を持ち、
両リングは点対称に配置された一対のほぼ半円弧状の腕
部で連結されている。外側のリングはカバー内にモール
ドされ、内側のリングは図1に示すように、下サスペン
ションバネ8bはポールピース4の下面の段差部に、上
サスペンションバネ8aはトッププレート6の上面の段
差部に圧入固着される。
FIG. 2A is a plan view of the upper cover in one example of the above-described embodiment of the present invention, and FIG. 2B is a plan view of the lower cover similarly, in a state where the insert molding of the suspension spring is completed. Is shown. The upper suspension spring 8a and the lower suspension spring 8b are both flat and have concentric ring portions on the inside and outside,
Both rings are connected by a pair of substantially semicircular arms arranged point-symmetrically. The outer ring is molded in the cover, the inner ring is the lower suspension spring 8b at the step on the lower surface of the pole piece 4, and the upper suspension spring 8a is at the step on the upper surface of the top plate 6, as shown in FIG. Press fit.

【0017】上カバー1a、下カバー1bはいずれもほ
ぼリング状をなすが、上カバー1aには方形の突出部で
ある端子部1fを有する。この部分には2本の端子ピン
1gが植えられる。これらには多機能型発音体の組立の
際、ボイスコイル3の両端からの引出し線が接続され
る。また上サスペンションバネ8aの一部は端子部1f
を貫通して外部に延びており、これはアース端子8dと
なる。また下カバー1bには下サスペンションバネ8b
と共に防磁リング10の下部がインサートモールドされ
ている。防磁リング10の上部は下カバー1bの上面か
ら突出している。この部分を収容するリング状の切欠き
が上カバー1aの下面に設けてあり、上下カバーを合せ
て固定し、一体化する際、防磁リング10は両者の位置
決めの役割をも果たす。なお上カバー1aの上部には同
心円状のひだを付けた振動板2がその外周部で接着され
る。
Each of the upper cover 1a and the lower cover 1b is substantially ring-shaped, but the upper cover 1a has a terminal portion 1f which is a rectangular projection. Two terminal pins 1g are planted in this portion. To these, lead wires from both ends of the voice coil 3 are connected when assembling the multifunctional sounding body. A part of the upper suspension spring 8a is connected to the terminal portion 1f.
, And extends to the outside, which serves as a ground terminal 8d. The lower cover 1b has a lower suspension spring 8b.
At the same time, the lower part of the magnetic shield ring 10 is insert-molded. The upper part of the magnetic shield ring 10 protrudes from the upper surface of the lower cover 1b. A ring-shaped notch for accommodating this portion is provided on the lower surface of the upper cover 1a, and when the upper and lower covers are fixed together and integrated, the magnetic shield ring 10 also plays a role in positioning the both. A diaphragm 2 having concentric folds is bonded to an upper portion of the upper cover 1a at an outer peripheral portion thereof.

【0018】また上カバー1a、下カバー1bには内周
上の内直径の両端部の同じ位置に切欠部1cを有し、こ
の部分では防磁リング10の内面が露出している。図3
にはポールピース4を斜視図で示しているが、その外周
部にはひれ状のストッパー部4aが設けてあり、該スト
ッパー部4aは上カバーおよび下カバーの内周の切欠部
1cに嵌入するように組立てられる。これらの役目は、
衝撃などで磁気回路が上方に大きく変位したとき、スト
ッパー部4aを上カバーの切欠部1cの天井部に衝突さ
せるようにして磁気回路の移動量を制限し、比較的脆弱
な構造である振動板2(上カバー1aに周縁部を固着さ
れている)やボイスコイル3を破損から守ることにあ
る。なお図3のポールピース4の凸部周囲に設けてある
リング状の溝4bもボイスコイル3との衝突を防ぐ逃げ
である。
The upper cover 1a and the lower cover 1b have cutouts 1c at the same positions on both ends of the inner diameter on the inner circumference, and the inner surface of the magnetic shield ring 10 is exposed at these portions. FIG.
The pole piece 4 is shown in a perspective view, and a fin-shaped stopper portion 4a is provided on the outer peripheral portion thereof. The stopper portion 4a fits into a notch 1c on the inner periphery of the upper cover and the lower cover. Assembled. These roles are:
When the magnetic circuit is largely displaced upward due to an impact or the like, the stopper 4a is caused to collide with the ceiling of the notch 1c of the upper cover to limit the amount of movement of the magnetic circuit, and the diaphragm has a relatively fragile structure. 2 (the periphery is fixed to the upper cover 1a) and the voice coil 3 from damage. The ring-shaped groove 4b provided around the convex portion of the pole piece 4 in FIG. 3 is also a relief for preventing collision with the voice coil 3.

【0019】図4(a)は上記本発明の実施の形態の一
例におけるインサートモールド前の上サスペンションバ
ネの平面図、(b)は同じく下サスペンションバネの平
面図で、上下ケースの製造法をも説明する図である。参
考迄にインサートモールド後の上カバー1a、下カバー
1bの輪郭を点線で示してある。上サスペンションバネ
8a、下サスペンションバネ8bの素材は板状の帯材で
ある。帯材には一定のピッチで位置決め穴11が開けら
れており、それを基準にしてサスペンションバネの形状
が加工され、またインサートモールドにおける金型のキ
ャビティとの位置決めも行われる。
FIG. 4A is a plan view of an upper suspension spring before insert molding in an example of the embodiment of the present invention, and FIG. 4B is a plan view of a lower suspension spring similarly. FIG. For reference, the outlines of the upper cover 1a and the lower cover 1b after the insert molding are shown by dotted lines. The material of the upper suspension spring 8a and the lower suspension spring 8b is a plate-shaped strip. Positioning holes 11 are formed in the strip at a constant pitch, the shape of the suspension spring is processed based on the holes, and positioning of the suspension spring with the mold cavity in insert molding is also performed.

【0020】インサートモールド後、上下各サスペンシ
ョンバネは一点鎖線で示す切断線13の部位で周囲の枠
状部分との連結部12と分離され、上下のカバーはそれ
ぞれ図2の状態となる。なお煩雑さを避けるため、図2
(b)においてやはりインサートモールドされる防磁リ
ング10は図4(b)では図示を省略している。また図
2の状態の上、下カバーを、磁気回路と重ね、各サスペ
ンションバネの内側リングをトッププレート6の段差部
およびポールピース4の段差部に圧入し、同時に上下カ
バーの位置合わせと固定が行われる。
After the insert molding, each of the upper and lower suspension springs is separated from the connection portion 12 with the surrounding frame-shaped portion at a cutting line 13 shown by a dashed line, and the upper and lower covers are as shown in FIG. In order to avoid complexity, FIG.
The magnetic shield ring 10 which is also insert-molded in FIG. 4B is not shown in FIG. 4B. In addition, the upper and lower covers are overlapped with the magnetic circuit in the state of FIG. 2, and the inner ring of each suspension spring is pressed into the step of the top plate 6 and the step of the pole piece 4, and at the same time, the upper and lower covers are aligned and fixed. Done.

【0021】以上本発明の実施の形態の一例について説
明したが、本発明はこの実施の形態に限定されないこと
はもちろんである。例えばカバーの形状、サスペンショ
ンバネの形状や腕数や枚数、振動板の形状、永久磁石の
形状、ポールピースの形状、トッププレートの形状、付
加質量を設けること、その他細部の形状、他の部材を付
加すること、あるいは各部の材質等は種々変更が可能で
ある。
Although an example of the embodiment of the present invention has been described above, the present invention is, of course, not limited to this embodiment. For example, cover shape, suspension spring shape, number and number of arms, diaphragm shape, permanent magnet shape, pole piece shape, top plate shape, providing additional mass, other detailed shapes, other members Various changes can be made to the addition or the material of each part.

【0022】[0022]

【発明の効果】(1)本発明の構造および製造法におい
てはサスペンションバネとカバーはインサートモールド
法により一体化され、そのサスペンションバネに対して
磁気回路が位置決め固定されるので、結果的に磁気回路
に対するカバーの位置精度が向上し偏心が生じ難く、両
者が触れたりすることがなくなり、製品の歩留りおよび
信頼性が向上する効果がある。
(1) In the structure and manufacturing method of the present invention, the suspension spring and the cover are integrated by the insert molding method, and the magnetic circuit is positioned and fixed to the suspension spring. The position accuracy of the cover with respect to is improved, eccentricity is less likely to occur, and the two do not touch each other, and the yield and reliability of the product are improved.

【0023】(2)またサスペンションバネとカバーと
を結合するために接着剤を使用する必要がないので、接
着剤に関連するトラブルを回避できる。また接着組立の
ための設備や治工具を必要とせず、組立工数の短縮、従
って製造コストの低減をも可能とする。
(2) Since there is no need to use an adhesive for connecting the suspension spring and the cover, troubles related to the adhesive can be avoided. Also, no equipment or jigs are required for bonding and assembling, so that the number of assembling steps can be reduced, and the manufacturing cost can be reduced.

【0024】(3)サスペンションバネには膨大した先
端部を設けなくても良いので、カバーの平面形状を箱型
にする必要がなく、例えば円筒形でも良いので、多機能
型発音体を小型化することができる。
(3) The suspension spring does not need to be provided with an enormous tip, so that it is not necessary to make the cover in a box shape, for example, it may be in a cylindrical shape. can do.

【0025】(4)上下のカバーの位置合わせに防磁リ
ングを使用する構成の場合、本来他の目的の部品を効果
的に用いて発音体の構造の簡素化と組立方法の容易化を
図ることができる。
(4) In the case of using a magnetic shield ring for positioning the upper and lower covers, the structure of the sounding body is simplified and the assembling method is facilitated by effectively using parts originally intended for other purposes. Can be.

【0026】(5)サスペンションバネのインサートモ
ールドに当たり、サスペンションバネに帯状の素材を用
い、カバーの成形をその上で行うことにより、サスペン
ションバネとカバーとの位置関係の精度を大幅に向上さ
せることができる。
(5) In the insert molding of the suspension spring, a belt-shaped material is used for the suspension spring, and the cover is formed thereon, thereby greatly improving the accuracy of the positional relationship between the suspension spring and the cover. it can.

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

【図1】本発明の実施の形態の一例である多機能型発音
体の断面図である。
FIG. 1 is a cross-sectional view of a multifunctional sounding body as an example of an embodiment of the present invention.

【図2】(a)は本発明の実施の形態の一例における上
カバーの平面図、(b)は同じ例における下カバーの平
面図である。
FIG. 2A is a plan view of an upper cover according to an example of the embodiment of the present invention, and FIG. 2B is a plan view of a lower cover according to the same example.

【図3】本発明の実施の形態の一例におけるポールピー
スの斜視図である。
FIG. 3 is a perspective view of a pole piece according to an example of an embodiment of the present invention.

【図4】(a)は本発明の実施の形態の一例における上
サスペンションバネの平面図、(b)は同じく下サスペ
ンションバネの平面図である。
FIG. 4A is a plan view of an upper suspension spring according to an example of the embodiment of the present invention, and FIG. 4B is a plan view of a lower suspension spring in the same manner.

【図5】従来例の多機能型発音体の断面図である。FIG. 5 is a cross-sectional view of a conventional multifunctional sounding body.

【図6】(a)は従来例における磁気回路と一体化され
たサスペンションバネの平面図、(b)はその断面図、
(c)はそれが収容されるカバーの平面図である。
6A is a plan view of a suspension spring integrated with a magnetic circuit in a conventional example, FIG. 6B is a cross-sectional view thereof,
(C) is a plan view of a cover in which it is accommodated.

【符号の説明】[Explanation of symbols]

1 カバー 1a 上カバー 1b 下カバー 1c 切欠部 1e 支持部 1f 端子部 1g 端子ピン 2 振動板 3 ボイスコイル 4 ポールピース 4a ストッパー部 4b 溝 5 永久磁石 6 トッププレート 7 ヨーク 8a 上サスペンションバネ 8b 下サスペンションバネ 8c 先端部 8d アース端子 9 付加質量 10 防磁リング 11 位置決め穴 12 連結部 13 切断線 DESCRIPTION OF SYMBOLS 1 Cover 1a Upper cover 1b Lower cover 1c Notch 1e Support 1f Terminal 1g Terminal pin 2 Diaphragm 3 Voice coil 4 Pole piece 4a Stopper 4b Groove 5 Permanent magnet 6 Top plate 7 Yoke 8a Upper suspension spring 8b Lower suspension spring 8c Tip 8d Ground terminal 9 Additional mass 10 Magnetic shield ring 11 Positioning hole 12 Connecting part 13 Cutting line

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 5D012 CA01 CA09 CA16 DA04 FA10 GA04 HA01 5D017 AA11 5D107 AA12 BB08 CC09 CD05 DD12 FF10  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5D012 CA01 CA09 CA16 DA04 FA10 GA04 HA01 5D017 AA11 5D107 AA12 BB08 CC09 CD05 DD12 FF10

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 カバーと、該カバーに保持され音響周波
数の電磁力を受けて振動する振動板と、前記カバーに弾
性部材により弾性支持されて比較的低周波の振動系を構
成し、前記振動板に対して前記電磁力を発生するための
磁界を与える永久磁石を含み比較的質量の大なる磁気回
路とより成り、複数の周波数帯の電気的入力に対応して
前記振動板または前記磁気回路のいずれかが主に応答し
て振動する多機能型発音体において、前記磁器回路は、
前記カバーに対してあらかじめインサートモールドされ
た前記弾性部材に対して固着されたことを特徴とする多
機能型発音体。
1. A cover, a diaphragm held by the cover and vibrating by receiving an electromagnetic force of an acoustic frequency, and a relatively low-frequency vibration system elastically supported by an elastic member on the cover to form a relatively low-frequency vibration system. A magnetic circuit having a relatively large mass including a permanent magnet for applying a magnetic field for generating the electromagnetic force to the plate, wherein the diaphragm or the magnetic circuit corresponds to electrical inputs in a plurality of frequency bands. In a multifunctional sounding body in which any of the above mainly vibrates in response, the porcelain circuit includes:
A multifunctional sounding body fixed to the elastic member which has been insert-molded to the cover in advance.
【請求項2】 カバーと、該カバーに保持され音響周波
数の電磁力を受けて振動する振動板と、前記カバーに弾
性部材により弾性支持されて比較的低周波の振動系を構
成し、前記振動板に対して前記電磁力を発生するための
磁界を与える永久磁石を含み比較的質量の大なる磁気回
路とより成り、複数の周波数帯の電気的入力に対応して
前記振動板または前記磁気回路のいずれかが主に応答し
て振動する多機能型発音体において、前記カバーは上下
2体から成り、それぞれ弾性部材をインサートモールド
していると共に、一方のカバーは防磁リングをその一部
が露出するようにインサートモールドしており、他方の
カバーは前記防磁リングの露出部が嵌装される凹部を有
し、かつ前記磁器回路は、前記カバーに対してあらかじ
めインサートモールドされた前記弾性部材に対して固着
されたことを特徴とする多機能型発音体。
2. A cover, a vibrating plate held by the cover and vibrating by receiving an electromagnetic force of an acoustic frequency, and a relatively low-frequency vibration system elastically supported by an elastic member on the cover to form a vibration system having a relatively low frequency. A magnetic circuit having a relatively large mass including a permanent magnet for applying a magnetic field for generating the electromagnetic force to the plate, wherein the diaphragm or the magnetic circuit corresponds to electrical inputs in a plurality of frequency bands. Is a multifunctional sounding body that vibrates mainly in response to any one of the above, wherein the cover is composed of two upper and lower bodies, each of which is insert-molded with an elastic member, and one of the covers has a magnetic shield ring partially exposed. The other cover has a concave portion into which the exposed portion of the anti-magnetic ring is fitted, and the porcelain circuit has an insert molding with respect to the cover in advance. A multifunctional sounding body fixed to the elastic member mounted.
【請求項3】 カバーと、該カバーに保持され音響周波
数の電磁力を受けて振動する振動板と、前記カバーに弾
性部材により弾性支持されて比較的低周波の振動系を構
成し、前記振動板に対して前記電磁力を発生するための
磁界を与える永久磁石を含み比較的質量の大なる磁気回
路とより成り、複数の周波数帯の電気的入力に対応して
前記振動板または前記磁気回路のいずれかが主に応答し
て振動する多機能型発音体の製造方法において、前記弾
性部材は帯状の金属板を素材とし、該素材には予め所定
の間隔で位置決め穴および周囲の枠状部分と連結部で連
結された支持バネが打抜き形成されており、前記素材に
対して前記位置決め穴を基準として成形金型内で前記支
持バネを合成樹脂にてインサートモールドし、その後の
工程において前記連結部を切断することによって前記支
持バネと前記カバーとを一体化したことを特徴とする多
機能型発音体の製造方法。
3. A cover, a vibration plate held by the cover and vibrating by receiving an electromagnetic force of an acoustic frequency, and a relatively low-frequency vibration system elastically supported by an elastic member on the cover to form a vibration system having a relatively low frequency. A magnetic circuit having a relatively large mass including a permanent magnet for applying a magnetic field for generating the electromagnetic force to the plate, wherein the diaphragm or the magnetic circuit corresponds to electrical inputs in a plurality of frequency bands. Wherein the elastic member is made of a band-shaped metal plate, and the material has a positioning hole and a surrounding frame-shaped portion at predetermined intervals in advance. And a support spring connected by a connecting portion is formed by punching. The support spring is insert-molded with a synthetic resin in a molding die with respect to the material with reference to the positioning hole. A method for manufacturing a multifunctional sounding body, characterized in that the support spring and the cover are integrated by cutting a connecting portion.
JP2000052878A 2000-02-29 2000-02-29 Multifunctional sounding body and method for producing the same Expired - Fee Related JP4553278B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000052878A JP4553278B2 (en) 2000-02-29 2000-02-29 Multifunctional sounding body and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000052878A JP4553278B2 (en) 2000-02-29 2000-02-29 Multifunctional sounding body and method for producing the same

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Publication Number Publication Date
JP2001239211A true JP2001239211A (en) 2001-09-04
JP4553278B2 JP4553278B2 (en) 2010-09-29

Family

ID=18574329

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Country Status (1)

Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002218578A (en) * 2001-01-22 2002-08-02 Citizen Electronics Co Ltd Multifunctional sounder and its manufacturing method
WO2002100561A1 (en) * 2001-06-11 2002-12-19 Namiki Seimitsu Houseki Kabushiki Kaisha Vibrating actuator device
WO2004039122A1 (en) * 2002-10-24 2004-05-06 Matsushita Electric Industrial Co., Ltd. Electroacoustic transducer with vibration function and its manufacturing method
KR20040062387A (en) * 2002-12-30 2004-07-07 주식회사 삼부커뮤닉스 multi-functional speaker
US7170205B2 (en) 2004-07-01 2007-01-30 Samsung Electro-Mechanics Co., Ltd. Internal weight type vertical vibrator
JP2008288636A (en) * 2007-05-15 2008-11-27 Citizen Electronics Co Ltd Electro-acousto-mechanical transducer
JP2016144250A (en) * 2015-01-30 2016-08-08 日本電産サンキョー株式会社 Manufacturing method of linear actuator, and linear actuator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02264599A (en) * 1989-04-04 1990-10-29 Matsushita Electric Ind Co Ltd Low leakage magnetic flux type speaker
JPH05336593A (en) * 1992-06-02 1993-12-17 Matsushita Electric Ind Co Ltd Frame for speaker and manufacture thereof
JPH11192455A (en) * 1997-10-30 1999-07-21 Matsushita Electric Ind Co Ltd Electro-mechano-acoustic converter and its production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02264599A (en) * 1989-04-04 1990-10-29 Matsushita Electric Ind Co Ltd Low leakage magnetic flux type speaker
JPH05336593A (en) * 1992-06-02 1993-12-17 Matsushita Electric Ind Co Ltd Frame for speaker and manufacture thereof
JPH11192455A (en) * 1997-10-30 1999-07-21 Matsushita Electric Ind Co Ltd Electro-mechano-acoustic converter and its production

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002218578A (en) * 2001-01-22 2002-08-02 Citizen Electronics Co Ltd Multifunctional sounder and its manufacturing method
WO2002100561A1 (en) * 2001-06-11 2002-12-19 Namiki Seimitsu Houseki Kabushiki Kaisha Vibrating actuator device
WO2004039122A1 (en) * 2002-10-24 2004-05-06 Matsushita Electric Industrial Co., Ltd. Electroacoustic transducer with vibration function and its manufacturing method
US7082668B2 (en) 2002-10-24 2006-08-01 Matsushita Electric Industrial Co., Ltd. Electro-acoustic transducer having vibrating function and method of manufacturing the same
KR20040062387A (en) * 2002-12-30 2004-07-07 주식회사 삼부커뮤닉스 multi-functional speaker
US7170205B2 (en) 2004-07-01 2007-01-30 Samsung Electro-Mechanics Co., Ltd. Internal weight type vertical vibrator
JP2008288636A (en) * 2007-05-15 2008-11-27 Citizen Electronics Co Ltd Electro-acousto-mechanical transducer
JP2016144250A (en) * 2015-01-30 2016-08-08 日本電産サンキョー株式会社 Manufacturing method of linear actuator, and linear actuator

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