JP2001177898A - Electroacoustic transducer and its manufacturing method - Google Patents
Electroacoustic transducer and its manufacturing methodInfo
- Publication number
- JP2001177898A JP2001177898A JP36025599A JP36025599A JP2001177898A JP 2001177898 A JP2001177898 A JP 2001177898A JP 36025599 A JP36025599 A JP 36025599A JP 36025599 A JP36025599 A JP 36025599A JP 2001177898 A JP2001177898 A JP 2001177898A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- frame
- adhesive
- case
- ultraviolet
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は携帯電話等の呼出用
等に使用される電気音響変換器およびその製造方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electroacoustic transducer used for calling a cellular phone or the like and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】従来の技術を図３の電磁型の電気音響変
換器の断面図により説明する。2. Description of the Related Art The prior art will be described with reference to a sectional view of an electromagnetic electroacoustic transducer shown in FIG.
【０００３】同図によると、１は突出部が一対の端子部
（図示せず）を有する冷延鋼板よりなるフレーム２を一
体に樹脂成型により形成されたケースであり、３はフレ
ーム２に圧入されたセンターポール４に巻回されたコイ
ルであり、５は接着剤６によりフレーム２上に接着固着
されたマグネットであり、７はマグネット５上に配置さ
れた磁性材料よりなる振動板であり、８は上記ケース１
に固着された放音孔９を有する共鳴ケースである。な
お、接着剤６としてはエポキシ樹脂が用いられている。According to FIG. 1, reference numeral 1 denotes a case in which a frame 2 formed of a cold-rolled steel plate having a pair of terminals (not shown) is integrally formed by resin molding. A coil wound around the center pole 4, a magnet 5 adhered and fixed on the frame 2 by an adhesive 6, a diaphragm 7 made of a magnetic material disposed on the magnet 5, 8 is case 1 above
This is a resonance case having a sound emission hole 9 fixed to the first case. Note that an epoxy resin is used as the adhesive 6.
【０００４】上記の電磁型の電気音響変換器は端子部を
介して外部からの信号電流をコイル３に流すことによ
り、振動板７を上下動させ発音するものである。The above-mentioned electromagnetic type electroacoustic transducer is configured to move a diaphragm 7 up and down by a signal current from the outside flowing through a coil through a terminal portion to generate sound.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上述の
ごとく接着剤６としてはエポキシ樹脂を保持強度の面か
ら使用するため硬化までに時間を要し、マグネット５と
フレーム２との接合には被接合物が動かないように治工
具類にて接着剤６が硬化するまで保持する必要があり、
また、電気音響変換器の組立途中において加熱硬化のた
めに乾燥機等に数十分投入しておく必要があるなど、製
造工程の自動化を図る場合の阻害要因となっていた。However, as described above, since the epoxy resin is used as the adhesive 6 because of its holding strength, it takes a long time to cure. It is necessary to hold the adhesive 6 with jigs and tools so that the object does not move until it hardens,
In addition, during the assembly of the electroacoustic transducer, it is necessary to put it into a dryer or the like for heating and curing for several tens of minutes, which is a hindrance factor when trying to automate the manufacturing process.
【０００６】なお、高温で加熱することによって生産性
を上げることも考えられるが接着剤６の一部の蒸発・飛
散により接着強度が低下することが考えられあまり採用
されていなかった。Although it is conceivable to increase the productivity by heating at a high temperature, it is considered that the adhesive strength is reduced due to evaporation and scattering of a part of the adhesive 6, so that it has not been widely used.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明の電気音響変換器は、少なくとも底面にフレー
ムを一体成型したケースと、このフレーム上に熱硬化型
接着剤により装着されたマグネットと、このマグネット
を装着したケース上に形成された紫外線硬化樹脂層と、
上記マグネット上に配置された振動板とで構成したもの
である。In order to solve the above-mentioned problems, an electroacoustic transducer according to the present invention comprises a case in which a frame is integrally molded at least on a bottom surface, and a magnet mounted on the frame with a thermosetting adhesive. And an ultraviolet curable resin layer formed on a case on which the magnet is mounted,
And a diaphragm disposed on the magnet.
【０００８】上記構成により紫外線硬化樹脂層を熱硬化
型接着剤より先に紫外線硬化することにより加熱硬化時
の上記熱硬化型接着剤の上方への蒸発・飛散を防止して
短時間でのマグネットのフレームへの固着を可能とし、
電気音響変換器の生産性の向上に寄与するものである。According to the above configuration, the ultraviolet curable resin layer is cured by ultraviolet rays prior to the thermosetting adhesive, so that the thermosetting adhesive is prevented from evaporating and scattering upward during heat curing, so that the magnet can be shortened in a short time. Can be fixed to the frame,
This contributes to improving the productivity of the electroacoustic transducer.
【０００９】[0009]
【発明の実施の形態】本発明の請求項１に記載の発明
は、少なくとも底面にフレームを一体成型したケース
と、このフレーム上に熱硬化型接着剤により装着された
マグネットと、このマグネットを装着した上記ケース上
に形成された紫外線硬化樹脂層と、上記マグネット上に
配置された振動板とで構成されるものであり、上記紫外
線硬化樹脂層を先に硬化させることによって上記熱硬化
型接着剤が加熱硬化時に蒸発・ガス化によって上方に飛
散することを防止して、接着強度の低下を防止するとと
もに短時間硬化を可能として電気音響変換器の生産性の
向上を図れるものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides a case in which a frame is integrally molded on at least the bottom surface, a magnet mounted on the frame with a thermosetting adhesive, and a mounting of the magnet. The thermosetting adhesive comprises an ultraviolet curable resin layer formed on the case, and a vibration plate disposed on the magnet, and curing the ultraviolet curable resin layer first. Is prevented from being scattered upward due to evaporation and gasification at the time of heat curing, thereby preventing a decrease in adhesive strength and enabling short curing to improve the productivity of the electroacoustic transducer.
【００１０】本発明の請求項２に記載の発明は、底面に
フレームを一体成型したケースの上記フレーム上に熱硬
化型接着剤層を形成し、マグネットを上記熱硬化型接着
剤層を介してフレーム上に配置した後、マグネットを配
置したケースの上に紫外線硬化樹脂層を形成し、紫外線
を紫外線硬化樹脂層に照射して紫外線硬化樹脂を硬化さ
せた後、加熱により熱硬化型接着剤層を硬化させてフレ
ームにマグネットを固着した後、マグネット上に振動板
を組込む電気音響変換器の製造方法であり、紫外線硬化
樹脂を確実に硬化させて加熱硬化時の上記熱硬化型接着
剤の上方への蒸発・飛散を防止し、上記マグネットとフ
レームとの接着強度を低下させることなく短時間硬化が
行え、生産性に優れた製造方法が提供できるものであ
る。According to a second aspect of the present invention, a thermosetting adhesive layer is formed on the frame of a case in which a frame is integrally formed on the bottom surface, and a magnet is interposed through the thermosetting adhesive layer. After being placed on the frame, an ultraviolet-curable resin layer is formed on the case where the magnet is placed, and the ultraviolet-curable resin layer is irradiated with ultraviolet rays to cure the ultraviolet-curable resin. Is a method of manufacturing an electro-acoustic transducer in which a magnet is fixed to a frame after being cured, and a diaphragm is incorporated on the magnet. The ultraviolet-curable resin is surely cured to be above the thermosetting adhesive during heat curing. Thus, it is possible to provide a production method which is capable of preventing evaporation and scattering to the surface, hardening for a short time without lowering the adhesive strength between the magnet and the frame, and having excellent productivity.
【００１１】本発明の請求項３に記載の発明は、底面に
フレームを一体成型したケースと、上記フレーム上に形
成された熱・紫外線硬化型接着剤層と、この熱・紫外線
硬化型接着剤層を介して上記フレーム上に固着されたマ
グネットと、上記マグネット上に配置された振動板とで
構成したものであり、品質に安定した、生産性に優れた
自動化（機械化）可能な電気音響変換器の提供を可能と
するものである。According to a third aspect of the present invention, there is provided a case wherein a frame is integrally formed on a bottom surface, a heat / ultraviolet curable adhesive layer formed on the frame, and the heat / ultraviolet curable adhesive. It is composed of a magnet fixed on the frame via a layer and a diaphragm arranged on the magnet, and is an electroacoustic transducer that is stable in quality and has high productivity and can be automated (mechanized) with high productivity. It is possible to provide a container.
【００１２】本発明の請求項４に記載の発明は、底面に
フレームを一体成型したケースの上記フレーム上に熱・
紫外線硬化型接着剤層を形成し、マグネットを上記熱・
紫外線硬化型接着剤層を介して上記フレーム上に配置し
た後、少なくとも上記熱・紫外線硬化型接着剤の加熱硬
化前に上記ケースの上方を紫外線照射して照射面に露出
した上記熱・紫外線硬化型接着剤を硬化させるものであ
り、この熱・紫外線硬化型接着剤の加熱硬化時の上方へ
の蒸発・飛散を防止し、短時間硬化が行え、生産性に優
れた自動化（機械化）可能な製造方法が提供できるとと
もに、上記フレームと上記マグネットの固着に使用され
る上記熱・紫外線硬化型接着剤を紫外線硬化させて加熱
硬化時の上方への蒸発・飛散を防止するので、特に蒸発
・飛散を防止するための樹脂を不要とし、コスト、管理
コストおよび設備の簡素化が図れるものである。[0012] According to a fourth aspect of the present invention, the heat and heat is provided on the frame of the case in which the frame is integrally formed on the bottom surface.
An ultraviolet-curable adhesive layer is formed, and the magnet is
After being placed on the frame via an ultraviolet-curable adhesive layer, at least before the heat-curing of the thermo-ultraviolet-curable adhesive, the upper part of the case is exposed to ultraviolet light to expose the irradiated surface to the thermo-ultraviolet curing. This is to cure the mold adhesive, prevent the heat and ultraviolet curable adhesive from evaporating and scattering upward during heating and curing, perform the curing for a short time, and can automate (mechanize) with excellent productivity. A manufacturing method can be provided, and the heat and ultraviolet curable adhesive used for fixing the frame and the magnet is ultraviolet-cured to prevent upward evaporation and scattering at the time of heat curing. This eliminates the need for a resin to prevent the occurrence of a problem, thereby simplifying costs, management costs, and equipment.
【００１３】本発明の請求項５に記載の発明は、少なく
とも底面にフレームを一体成型したケースと、このフレ
ーム上に接着剤により装着されたマグネットと、このマ
グネットを装着した上記ケース上に形成された紫外線硬
化樹脂層と、上記マグネット上に配置された振動板とで
構成されるものであり、紫外線硬化樹脂層を硬化させる
ことにより、機器への実装時のリフロー半田槽の熱によ
るマグネット・フレーム間の接着剤の蒸発・飛散を防止
して、振動板への異物の付着を抑制して音圧特性の安定
した生産性良好な電気音響変換器の提供を可能とするも
のである。According to a fifth aspect of the present invention, there is provided a case wherein a frame is integrally molded at least on a bottom surface, a magnet mounted on the frame by an adhesive, and formed on the case mounted with the magnet. And a vibrating plate disposed on the magnet, and by curing the ultraviolet curable resin layer, the magnet frame is heated by the heat of the reflow solder tank during mounting on a device. It is an object of the present invention to provide an electroacoustic transducer having stable sound pressure characteristics and good productivity by preventing the adhesive from evaporating and scattering therebetween, thereby suppressing the adhesion of foreign matter to the diaphragm.
【００１４】以下、本発明の一実施の形態について図１
により説明する。なお、従来技術と同一部品は同一番号
を付して説明を省略して説明する。FIG. 1 shows an embodiment of the present invention.
This will be described below. Note that the same parts as those in the related art are denoted by the same reference numerals, and description thereof will be omitted.
【００１５】図１は本発明の電磁型の電気音響変換器の
一実施の形態の側断面図であり、同図によると、６ａは
エポキシ樹脂に比べて短時間で加熱硬化する熱・紫外線
硬化型接着剤の塗布層である。FIG. 1 is a side sectional view of one embodiment of the electromagnetic electro-acoustic transducer of the present invention. According to FIG. 1, reference numeral 6a denotes a heat / ultraviolet curable material which heats and cures in a shorter time than epoxy resin. It is a coating layer of a mold adhesive.
【００１６】なお、本実施の形態の電磁型の電気音響変
換器は上記熱・紫外線硬化型接着剤６ａをフレーム２と
マグネット５の接合部分の少なくともいずれか一方に塗
布し、マグネット５をフレーム２上に配置した後、ケー
ス１の底面に一体成型されたフレーム２上に上記加熱・
紫外線硬化型接着剤６ａを介してマグネット５を配置し
た上方から紫外線照射を行った後、加熱して上記熱・紫
外線硬化型接着剤６ａを硬化させ、振動板７を上記マグ
ネット５上に配置し、更に共鳴ケース８をケース１上に
固着するものである。In the electromagnetic electro-acoustic transducer according to the present embodiment, the heat / ultraviolet curing adhesive 6a is applied to at least one of the joints between the frame 2 and the magnet 5, and the magnet 5 is After being placed on the top, the heating and heating
After irradiating ultraviolet rays from above where the magnet 5 is arranged via the ultraviolet-curable adhesive 6a, the heat-ultraviolet-curable adhesive 6a is cured by heating, and the diaphragm 7 is placed on the magnet 5 Further, the resonance case 8 is fixed on the case 1.
【００１７】なお、接着剤として熱・紫外線硬化型接着
剤６ａを使用し、加熱硬化前にケース１の上方から紫外
線照射する理由について更に説明すると、マグネット５
をフレーム２上に配置した時、熱・紫外線硬化型接着剤
は粘状であるが粘度によって程度に差はあってもケース
１とマグネット５の微少な隙間を伝ってマグネット５や
ケース１の上部にしみだす。これに加えマグネット５が
樹脂成形したプラスチックマグネットであるとこのマグ
ネット成形時の内部のクラックやボイドを伝ってマグネ
ット５の上部にしみだすものもある。The reason why the heat / ultraviolet curable adhesive 6a is used as the adhesive and the ultraviolet light is irradiated from above the case 1 before the heat curing is further described.
When placed on the frame 2, the heat / ultraviolet curable adhesive is viscous, but depending on the viscosity, even though the degree varies depending on the viscosity, it passes through the minute gap between the case 1 and the magnet 5 and the upper part of the magnet 5 and the case 1 Seep out. In addition, when the magnet 5 is a plastic magnet formed by resin molding, there are some magnets that leak through the cracks and voids inside the magnet during molding to the upper part of the magnet 5.
【００１８】この状態において、ケース１の上方から紫
外線照射することにより露出した表面の熱・紫外線硬化
型接着剤６ａをまず硬化させ、その後、高温で加熱して
マグネット５とフレーム２間の上記熱・紫外線硬化型接
着剤６ａを加熱硬化させ、上記両者を固着するものであ
る。In this state, the heat / ultraviolet curable adhesive 6a on the surface exposed by irradiating ultraviolet rays from above the case 1 is first cured, and then heated at a high temperature to cause the heat between the magnet 5 and the frame 2 to be hardened. -The ultraviolet curing adhesive 6a is heated and cured to fix the two.
【００１９】以上のように、予め紫外線照射によりマグ
ネット５やケース１の表面に露出した熱・紫外線硬化型
接着剤６ａを硬化させるので、高温加熱時の熱・紫外線
硬化型接着剤６ａの蒸発・飛散を抑制し、短時間でのフ
レーム２とマグネット５の接着結合を接着強度の低下を
招くことなく行うことができるものである。As described above, the heat / ultraviolet curable adhesive 6a previously exposed on the surface of the magnet 5 and the case 1 by the irradiation of ultraviolet rays is cured, so that the heat / ultraviolet curable adhesive 6a at the time of high-temperature heating is evaporated. The scattering can be suppressed, and the bonding between the frame 2 and the magnet 5 can be performed in a short time without lowering the bonding strength.
【００２０】次に、以下に上述の内容を確認した実験に
ついて説明する。Next, an experiment for confirming the above contents will be described below.
【００２１】実験１（接合強度試験） 本発明の試験用電気音響変換器の作製と接着強度測
定 ・接着剤 嫌気性紫外線・熱硬化型アクリル系接着剤（日本ロック
タイト社製ＦＭＤ−２１０） ・樹脂によってインサート成形された半田メッキリード
からなるフレーム２上に上記接着剤６ａを２．５ｍｇ塗
布し、マグネット５を装着し、紫外線照射を行った。な
お、紫外線照射量は３０００〜４０００ｍｊである。更
に上記フレーム２を１５０℃の加熱板上に設置して５分
間保持した後、マグネット５の接着強度を測定した（接
着強度の測定はケース１の底部からフレーム２に小孔を
穿ちマグネット５を押圧してはがれる時点を測定した。
以下同じ）。Experiment 1 (Joint strength test) Preparation of the test electroacoustic transducer of the present invention and measurement of adhesive strength ・ Adhesive Anaerobic UV / thermosetting acrylic adhesive (FMD-210 manufactured by Nippon Loctite) ・ Resin 2.5 mg of the above-mentioned adhesive 6a was applied onto a frame 2 made of solder plating leads formed by insert molding, and a magnet 5 was attached thereto, and ultraviolet irradiation was performed. The irradiation amount of ultraviolet rays is 3000 to 4000 mj. Further, after the frame 2 was placed on a heating plate at 150 ° C. and held for 5 minutes, the adhesive strength of the magnet 5 was measured (the adhesive strength was measured by making a small hole in the frame 2 from the bottom of the case 1 and attaching the magnet 5 The point at which the sheet was pressed off was measured.
same as below).
【００２２】 比較試験用電気音響変換器の作製と接
着強度測定 ・接着剤 一液エポキシ系接着剤（短時間硬化用） ・樹脂によってインサート成形された半田メッキリード
からなるフレーム２上に上記接着剤６を２．５ｍｇ塗布
し、マグネット５を装着し、上記フレーム２を１５０℃
の加熱板上に設置して５分間保持した後、マグネット５
の接着強度を測定した。Preparation of Electroacoustic Transducer for Comparative Test and Measurement of Adhesive Strength Adhesive One-part epoxy adhesive (for short time curing) Adhesive on frame 2 made of solder plated lead insert-molded with resin 6 is applied at 2.5 mg, and the magnet 5 is attached.
After holding it on a heating plate and holding it for 5 minutes,
Was measured for adhesive strength.
【００２３】上記の結果を（表１）に示す。The above results are shown in (Table 1).
【００２４】[0024]
【表１】 [Table 1]
【００２５】以上の結果より本発明の実施の形態の接着
剤においても比較例のエポキシ樹脂によるものと接着強
度において問題のないことが確認された。From the above results, it was confirmed that the adhesive according to the embodiment of the present invention had no problem with the adhesive strength of the epoxy resin of the comparative example.
【００２６】なお、接着強度が本実施の形態のものの方
が若干高いのは、マグネット５とケース１の隙間に入っ
た熱・紫外線硬化型接着剤６ａが、飛散することなく固
化したことによる効果と思われる。The reason why the adhesive strength of the present embodiment is slightly higher in the present embodiment is that the heat / ultraviolet curable adhesive 6a that has entered the gap between the magnet 5 and the case 1 is solidified without being scattered. I think that the.
【００２７】実験２（実装試験） 上記実験１で作製された本発明および比較用電気音響変
換器を、振動板７を配置し共鳴ケース８を超音波溶着し
て完成し、２６０℃の雰囲気中において５分間放置した
後振動板７への異物付着、音圧特性および共鳴ケース
８、振動板７を外してマグネット５とフレーム２との接
合強度の測定を行った。その結果を（表２）に示す。Experiment 2 (Mounting Test) The present invention and the comparative electro-acoustic transducer produced in the above Experiment 1 were completed by disposing the diaphragm 7 and ultrasonically welding the resonance case 8, and were completed in an atmosphere of 260 ° C. After standing for 5 minutes, the adhesion of the foreign matter to the diaphragm 7, the sound pressure characteristics, the resonance case 8, and the diaphragm 7 were removed, and the bonding strength between the magnet 5 and the frame 2 was measured. The results are shown in (Table 2).
【００２８】[0028]
【表２】 [Table 2]
【００２９】（表２）より明らかなように、リフローに
よる実装状態を想定した２６０℃の５分間放置後の各種
特性の測定において、本実施の形態のものの方が比較例
のものより音圧変動、接着強度、振動板７への異物付着
の状況のいずれにおいても優れていることが確認され
た。また、比較例の振動板に付着した異物が接着剤成分
と確認された。As is clear from Table 2, in the measurement of various characteristics after leaving at 260.degree. C. for 5 minutes assuming the mounting state by reflow, the sound pressure fluctuation of the embodiment is larger than that of the comparative example. It was confirmed that the adhesive strength was excellent in all cases, the adhesive strength, and the situation of foreign matter adhesion to the diaphragm 7. In addition, foreign matter adhered to the diaphragm of the comparative example was confirmed to be an adhesive component.
【００３０】以上のことから、 比較例のものは低温硬化させた接着剤６はより高温
の状態に晒されることで完全硬化していなかった部分
が、蒸発・ガス化してマグネット５とケース１との隙間
およびマグネット５内のクラックやボイドを伝って上方
から飛び出し振動板７に付着した。From the above, in the comparative example, the part of the adhesive 6 cured at a low temperature was not completely cured by being exposed to a higher temperature. Along the cracks and voids in the magnet 5 and jumped out from above and adhered to the diaphragm 7.
【００３１】 実施の形態のものはマグネット５のフ
レーム２への装着時に上記隙間や上記クラック、ボイド
を伝って表面に露出した熱・紫外線硬化型接着剤６ａが
紫外線照射により先に硬化しているので、これらの微少
な隙間上方への通路が塞がれているために、振動板７へ
のガス化、蒸発した接着剤成分の付着が防止されたもの
と考えられる。In the embodiment, when the magnet 5 is mounted on the frame 2, the heat / ultraviolet curable adhesive 6 a exposed on the surface through the gap, the cracks, and the voids is first cured by ultraviolet irradiation. Therefore, it is considered that the gas passage to the diaphragm 7 and the adhesion of the evaporated adhesive component were prevented because the passages above the minute gaps were closed.
【００３２】なお、上記本実施の形態のごとく熱・紫外
線硬化型接着剤６ａをマグネット５とフレーム２間に塗
布するものは本発明のような電気音響変換器の生産上も
っとも生産効率の優れた構成と製造方法と考えられる
が、図２に示す応用展開例のごとく電気音響変換器の要
求される性能等を満足するために、マグネット５とフレ
ーム２間に熱硬化型接着剤６ｂを用い、マグネット５の
装着後、ケース１、マグネット５を含む上方から紫外線
硬化型接着剤６ｃを塗布し、紫外線照射して紫外線硬化
型接着剤６ｃを固化させた後、熱硬化型接着剤６ｂを硬
化させるものも短時間硬化が可能で自動組立化（機械
化）が上記実施の形態と同様行えるものであり、本発明
の範疇のものとなるものである。In the case of applying the heat / ultraviolet curable adhesive 6a between the magnet 5 and the frame 2 as in the present embodiment, the production efficiency of the electroacoustic transducer according to the present invention is the highest. Although it can be considered as a configuration and a manufacturing method, a thermosetting adhesive 6b is used between the magnet 5 and the frame 2 in order to satisfy the required performance and the like of the electroacoustic transducer as in the application example shown in FIG. After mounting the magnet 5, the case 1 and the ultraviolet curable adhesive 6c are applied from above including the magnet 5, and the ultraviolet curable adhesive 6c is solidified by irradiating ultraviolet rays, and then the thermosetting adhesive 6b is cured. It can be cured in a short time and can be automatically assembled (mechanized) in the same manner as in the above-described embodiment, and is included in the category of the present invention.
【００３３】また、少なくともフレーム２に一般的な接
着剤によりマグネット５の装着後、ケース１、マグネッ
ト５を含む上方から紫外線硬化型接着剤６ｃを塗布、紫
外線照射して電気音響変換器を完成させたものは、製造
組立上、生産性に寄与できるものでないとしても、機器
への装着時のリフロー半田槽の熱による発音特性に与え
る影響を抑制できるという上述の実施の形態と同様の効
果を有するものである。After mounting the magnet 5 on at least the frame 2 with a general adhesive, an ultraviolet-curing adhesive 6c is applied from above including the case 1 and the magnet 5, and irradiated with ultraviolet light to complete the electroacoustic transducer. In the manufacturing and assembling, even if it does not contribute to the productivity, it has the same effect as the above-described embodiment in that the influence on the sound generation characteristics due to the heat of the reflow solder tank at the time of attachment to the device can be suppressed. Things.
【００３４】[0034]
【発明の効果】本発明は以上のように構成したので、ケ
ースやマグネットの表面およびその隙間を紫外線硬化型
接着剤によって埋めて硬化させたため、以降の加熱によ
るフレームとマグネット間の接着剤の蒸発、ガス化によ
る振動板への影響を抑制して、接着剤の硬化時間の短縮
化を可能とし、生産性の向上を図れるものである。Since the present invention is constructed as described above, the surface of the case and the magnet and the gap between the case and the magnet are filled and cured with an ultraviolet curing adhesive, so that the adhesive between the frame and the magnet is evaporated by the subsequent heating. Further, it is possible to suppress the influence of gasification on the diaphragm, shorten the curing time of the adhesive, and improve the productivity.
【図１】本発明の電気音響変換器の一実施の形態の側断
面図FIG. 1 is a side sectional view of one embodiment of an electroacoustic transducer of the present invention.
【図２】同展開例の側断面図FIG. 2 is a side sectional view of the developed example.
【図３】従来の電気音響変換器の側断面図FIG. 3 is a side sectional view of a conventional electroacoustic transducer.
１ ケース ２ フレーム ３ コイル ４ センターポール ５ マグネット ６ 接着剤 ６ａ 熱・紫外線硬化型接着剤 ６ｂ 熱硬化型接着剤 ６ｃ 紫外線硬化型接着剤 ７ 振動板 ８ 共鳴ケース DESCRIPTION OF SYMBOLS 1 Case 2 Frame 3 Coil 4 Center pole 5 Magnet 6 Adhesive 6a Heat / ultraviolet curing adhesive 6b Thermosetting adhesive 6c Ultraviolet curing adhesive 7 Diaphragm 8 Resonance case
Claims (5)
たケースと、このフレーム上に熱硬化型接着剤により装
着されたマグネットと、このマグネットを装着した上記
ケース上に形成された紫外線硬化樹脂層と、上記マグネ
ット上に配置された振動板とで構成される電気音響変換
器。1. A case in which a frame is integrally formed on at least a bottom surface, a magnet mounted on the frame with a thermosetting adhesive, and an ultraviolet-curable resin layer formed on the case on which the magnet is mounted. An electro-acoustic transducer including a diaphragm disposed on the magnet.
上記フレーム上に熱硬化型接着剤層を形成し、マグネッ
トを上記熱硬化型接着剤層を介してフレーム上に配置し
た後、マグネットを配置したケースの上に紫外線硬化樹
脂層を形成し、紫外線を紫外線硬化樹脂層に照射して紫
外線硬化樹脂を硬化させた後、加熱により熱硬化型接着
剤層を硬化させてフレームにマグネットを固着した後、
マグネット上に振動板を組込む電気音響変換器の製造方
法。2. A thermosetting adhesive layer is formed on the frame of a case in which a frame is integrally formed on a bottom surface, and a magnet is disposed on the frame via the thermosetting adhesive layer, and then a magnet is disposed. An ultraviolet-curable resin layer was formed on the case, and the ultraviolet-curable resin layer was irradiated with ultraviolet rays to cure the ultraviolet-curable resin. Then, the thermosetting adhesive layer was cured by heating to fix the magnet to the frame. rear,
A method for manufacturing an electroacoustic transducer incorporating a diaphragm on a magnet.
と、上記フレーム上に形成された熱・紫外線硬化型接着
剤層と、この熱・紫外線硬化型接着剤層を介して上記フ
レーム上に固着されたマグネットと、上記マグネット上
に配置された振動板とで構成される電気音響変換器。3. A case in which a frame is integrally formed on the bottom surface, a heat / ultraviolet curable adhesive layer formed on the frame, and fixed on the frame via the heat / ultraviolet curable adhesive layer. An electroacoustic transducer comprising a magnet and a diaphragm arranged on the magnet.
上記フレーム上に熱・紫外線硬化型接着剤層を形成し、
マグネットを上記熱・紫外線硬化型接着剤層を介して上
記フレーム上に配置した後、上記ケースに紫外線を照射
して照射面に露出した上記熱・紫外線硬化型接着剤を硬
化させた後加熱して熱・紫外線硬化型接着剤を硬化させ
てマグネットをフレームに固着した後、上記マグネット
上に振動板を組込む電気音響変換器の製造方法。4. A heat / ultraviolet curable adhesive layer is formed on the frame of the case in which the frame is integrally molded on the bottom surface,
After placing the magnet on the frame via the heat and ultraviolet curable adhesive layer, the case is irradiated with ultraviolet light to cure the heat and ultraviolet curable adhesive exposed on the irradiation surface and then heated. A method for manufacturing an electro-acoustic transducer in which a thermo-ultraviolet curable adhesive is cured to fix a magnet to a frame, and then a diaphragm is mounted on the magnet.
たケースと、このフレーム上に接着剤により装着された
マグネットと、このマグネットを装着した上記ケース上
に形成された紫外線硬化樹脂層と、上記マグネット上に
配置された振動板とで構成される電気音響変換器。5. A case in which a frame is integrally molded on at least the bottom surface, a magnet mounted on the frame with an adhesive, an ultraviolet curable resin layer formed on the case on which the magnet is mounted, and An electroacoustic transducer composed of a diaphragm arranged in a space.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36025599A JP2001177898A (en) | 1999-12-20 | 1999-12-20 | Electroacoustic transducer and its manufacturing method |
| CNB008040516A CN1168067C (en) | 1999-12-20 | 2000-11-07 | Electroacoustic transducer and method of manufacture thereof |
| EP00971825A EP1164574A4 (en) | 1999-12-20 | 2000-11-07 | Electroacoustic transducer and method of manufacture thereof |
| PCT/JP2000/007813 WO2001046943A1 (en) | 1999-12-20 | 2000-11-07 | Electroacoustic transducer and method of manufacture thereof |
| NO20014027A NO20014027L (en) | 1999-12-20 | 2001-08-17 | Electroacoustic transducer and method for producing the same |
| US10/828,701 US20040194285A1 (en) | 1999-12-20 | 2004-04-21 | Electro-acoustic transducer and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36025599A JP2001177898A (en) | 1999-12-20 | 1999-12-20 | Electroacoustic transducer and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001177898A true JP2001177898A (en) | 2001-06-29 |
Family
ID=18468598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36025599A Pending JP2001177898A (en) | 1999-12-20 | 1999-12-20 | Electroacoustic transducer and its manufacturing method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1164574A4 (en) |
| JP (1) | JP2001177898A (en) |
| CN (1) | CN1168067C (en) |
| NO (1) | NO20014027L (en) |
| WO (1) | WO2001046943A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100418215B1 (en) * | 2001-08-21 | 2004-02-11 | 주식회사 삼부커뮤닉스 | Frame consolidation method of buzzer |
| KR101061226B1 (en) | 2009-07-01 | 2011-08-31 | 한국표준과학연구원 | Magnetostrictive transducer module for induction ultrasonic conversion |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165680B (en) * | 2020-10-15 | 2021-12-28 | 梅州国威电子有限公司 | Energy-concerving and environment-protective receiver of solidification is made and is used ultraviolet curing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5446032A (en) * | 1977-09-19 | 1979-04-11 | Matsushita Electric Ind Co Ltd | Production of speaker |
| CA1194637A (en) * | 1982-04-26 | 1985-10-01 | Charles R. Morgan | Uv and thermally curable, thermoplastic-containing compositions |
| JP3606877B2 (en) * | 1995-09-04 | 2005-01-05 | 松下電器産業株式会社 | Sounder |
| JPH09215091A (en) * | 1996-01-31 | 1997-08-15 | Kyocera Corp | Electromagnetic sounding body |
| DE19705027C2 (en) * | 1997-02-10 | 2002-09-19 | Infineon Technologies Ag | Method for gluing a component to a surface |
| JP3470025B2 (en) * | 1997-11-27 | 2003-11-25 | 京セラ株式会社 | Pronunciation body |
-
1999
- 1999-12-20 JP JP36025599A patent/JP2001177898A/en active Pending
-
2000
- 2000-11-07 EP EP00971825A patent/EP1164574A4/en not_active Withdrawn
- 2000-11-07 CN CNB008040516A patent/CN1168067C/en not_active Expired - Fee Related
- 2000-11-07 WO PCT/JP2000/007813 patent/WO2001046943A1/en not_active Application Discontinuation
-
2001
- 2001-08-17 NO NO20014027A patent/NO20014027L/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100418215B1 (en) * | 2001-08-21 | 2004-02-11 | 주식회사 삼부커뮤닉스 | Frame consolidation method of buzzer |
| KR101061226B1 (en) | 2009-07-01 | 2011-08-31 | 한국표준과학연구원 | Magnetostrictive transducer module for induction ultrasonic conversion |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1164574A1 (en) | 2001-12-19 |
| CN1168067C (en) | 2004-09-22 |
| NO20014027L (en) | 2001-10-19 |
| NO20014027D0 (en) | 2001-08-17 |
| EP1164574A4 (en) | 2006-07-19 |
| CN1341254A (en) | 2002-03-20 |
| WO2001046943A1 (en) | 2001-06-28 |
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