JPS6130479B2 - - Google Patents
Info
- Publication number
- JPS6130479B2 JPS6130479B2 JP55154990A JP15499080A JPS6130479B2 JP S6130479 B2 JPS6130479 B2 JP S6130479B2 JP 55154990 A JP55154990 A JP 55154990A JP 15499080 A JP15499080 A JP 15499080A JP S6130479 B2 JPS6130479 B2 JP S6130479B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- thin film
- melt adhesive
- adhesive
- paper
- 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
Links
- 239000011162 core material Substances 0.000 claims description 30
- 239000010409 thin film Substances 0.000 claims description 22
- 239000004831 Hot glue Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 229920006122 polyamide resin Polymers 0.000 claims description 4
- 239000004645 polyester resin Substances 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 description 25
- 239000000853 adhesive Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/08—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid
Description
【発明の詳細な説明】
この発明はスピーカ用振動板に係り、特に軽量
で量産性の優れた連続複数筒状体の開口両面に薄
膜を貼着した振動板とその製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm for a speaker, and more particularly to a diaphragm in which thin films are adhered to both sides of the openings of a plurality of consecutive cylindrical bodies, which are light in weight and excellent in mass production, and a method for manufacturing the same.
一般にスピーカ用振動板として必要な物性に(イ)
面密度が小さいこと、(ロ)比弾性率Ｅ／〓が大きい
ことがある。（ここでＥ：弾性率．〓：密度）
面密度を小さくすることは振動板の重量を軽く
し、音圧を大きくするために必要であり、また比
弾性率を大きくすることはスピーカのピストン運
動の領域を拡大するために必要である。 Physical properties generally required for speaker diaphragms (a)
The areal density may be small, and (b) the specific elastic modulus E/〓 may be large. (Here, E: elastic modulus.〓: density) Reducing the areal density is necessary to reduce the weight of the diaphragm and increase the sound pressure, and increasing the specific modulus of elasticity is necessary to reduce the weight of the diaphragm and increase the sound pressure. It is necessary to expand the area of \u200b\u200bexercise.
第１図はスピーカの音圧―周波数特性の一例で
あるが、一般にピストン運動領域と分割振動領域
に大別できる。ピストン運動領域は振動板が一体
となつて振動する比較的低い周波数の帯域で、音
圧―周波数特性は平担であり、音の歪みの発生も
小さい。ところが分割振動領域は振動板の各部分
が局部的に異つた振動をする比較的周波数の高い
領域であり、音圧特性に山・谷を生じやすく音の
歪みも大きいことが多い。このためスピーカの性
能を向上させるにはピストン運動領域をなるべく
広くすることが望ましい。 FIG. 1 shows an example of the sound pressure-frequency characteristics of a speaker, which can generally be divided into a piston motion region and a divided vibration region. The piston movement region is a relatively low frequency band where the diaphragm vibrates as a unit, the sound pressure-frequency characteristics are flat, and the occurrence of sound distortion is small. However, the divided vibration region is a relatively high-frequency region in which each part of the diaphragm vibrates locally differently, and the sound pressure characteristics tend to have peaks and valleys, often resulting in large sound distortions. Therefore, in order to improve the performance of the speaker, it is desirable to widen the piston movement area as much as possible.
このような要望から最近は第２図および第３図
に示すような金属あるいは高分子材料または紙の
薄膜よりなるハニカム状コアを芯材１とし、金属
あるいは高分子材料または紙の薄膜３を上記芯材
の両面に接着剤４により貼りつけてスキンとした
サンドイツチ構造の振動板が実用化されるに至つ
た。ここで２は単位コアを示す。 In response to such demands, recently a honeycomb-shaped core made of a thin film of metal, polymeric material, or paper as shown in FIGS. 2 and 3 is used as the core material 1, and a thin film 3 of metal, polymeric material, or paper is used as the core material. A diaphragm with a sandwich structure that is bonded to both sides of a core material using an adhesive 4 to form a skin has come to be put into practical use. Here, 2 indicates a unit core.
ここに述べたようなサンドイツチ構造の振動板
は
(1) 芯材であるハニカムコアが中空であるため密
度が小さく、厚みを増しても面密度が大きくな
らないので振動板の総重量を軽くできる。 The diaphragm with the Sanderch structure described here has (1) a hollow honeycomb core, which has a low density, and even if the thickness increases, the areal density does not increase, so the total weight of the diaphragm can be reduced;
(2) 比弾性率Ｅ／〓が大きいので、音響性能の良
好なピストン運動領域を広くとることができ
る。(2) Since the specific elastic modulus E/〓 is large, the piston movement region with good acoustic performance can be widened.
(3) 圧縮に強いハニカムコアと、伸縮に強いスキ
ンとを組合せた構造であるため、曲げ剛性が大
で、分割振動を生じにくく、音響出力の歪みが
小さい。(3) Because it has a structure that combines a honeycomb core that is resistant to compression and a skin that is resistant to expansion and contraction, it has high bending rigidity, is less likely to cause split vibration, and has low distortion in acoustic output.
というスピーカ振動板として大きな利点を有す
る。 This has great advantages as a speaker diaphragm.
ところがこれらハニカムサンドイツチ構造振動
板の製造は従来、
(a) 液状接着剤をスキンに塗布した後、ハニカム
コアと重ね合わせて圧力を加えて一体化する方
法。 However, these honeycomb sandwich structure diaphragms are traditionally manufactured by (a) applying liquid adhesive to the skin, then overlapping it with the honeycomb core and applying pressure to integrate it;
(b) 熱硬化性フイルム状接着剤をハニカムコアと
スキンの間に介在させた後、熱と圧力を加える
ことにより接着剤を硬化させ一体化する方法。(b) A method in which a thermosetting film adhesive is interposed between the honeycomb core and the skin, and then the adhesive is cured and integrated by applying heat and pressure.
により行われており、これらの方法では(1)接着剤
はスキンとハニカムコアが接触する部分のみでよ
いのにかかわらず前述の従来方法では何れもその
部分以外のスキン面に接着剤が残るため、その接
着剤の重量だけ重くなる。(2)前述の従来方法では
何れも接着剤の硬化時間は最低15分程度は必要で
あり量産性が良くない。という問題点があつた。(1) In these methods, the adhesive is only applied to the area where the skin and honeycomb core come into contact; however, in the conventional methods described above, the adhesive remains on the skin surface other than that area. , it becomes heavier by the weight of the adhesive. (2) All of the conventional methods described above require at least 15 minutes for the adhesive to harden, and are not suitable for mass production. There was a problem.
この発明は前述した従来の欠点を改善するため
なされたもので、その目的は従来のハニカムサン
ドイツチ構造の振動板よりに軽く、かつ製造時間
が短く量産に適したスピーカ用振動板とその製造
方法を提供することにあり、連続複数筒状体の芯
材と薄膜よりなるスキンを不織布状熱溶融型接着
剤を用いて一体化したものとその製造方法であ
る。 This invention was made to improve the above-mentioned conventional drawbacks, and its purpose is to provide a speaker diaphragm that is lighter than the conventional honeycomb sandwich structure diaphragm, shortens the manufacturing time, and is suitable for mass production. The object of the present invention is to provide a method in which a core material of a plurality of continuous cylindrical bodies and a skin made of a thin film are integrated using a non-woven hot-melt adhesive, and a method for manufacturing the same.
即ちこの発明は金属もしくは高分子材料もしく
は紙または紙と高分子材料とを混合したものの何
れか一種の薄膜よりなり、筒状体をその周側面で
連続させた形状のものを芯材とし、その開口両面
に金属もしくは高分子材料もしくは紙または紙と
高分子材料とを混合したものの何れか一種の薄膜
を不織布状熱溶融型接着剤を用いて一体化したも
の、および上述の薄膜、接着材連続複数筒状芯
材、接着剤、薄膜をこの順に積層し、上面が所望
の形状に形成され所定温度に加熱された雌金型上
に載置し、同温度に加熱され、かつ下面がこの雌
金型に対応する形状に形成された雄金型で上方よ
り第１の所定時間加圧した後取り出し、上記と同
形で室温の雌、雄金型に嵌合して第２の所定時間
に冷却した後取り出す製造方法である。 That is, the present invention uses a core material that is made of a thin film of metal, polymeric material, paper, or a mixture of paper and polymeric material, and has a cylindrical shape continuous on its circumferential surface. Thin films of metal, polymeric materials, paper, or a mixture of paper and polymeric materials are integrated on both sides of the opening using a nonwoven hot-melt adhesive, and the above-mentioned thin films and adhesives are continuous. A plurality of cylindrical core materials, an adhesive, and a thin film are laminated in this order, and the upper surface is formed into a desired shape and placed on a female mold that is heated to a predetermined temperature. After applying pressure from above for a first predetermined time using a male mold formed in a shape corresponding to the mold, it is taken out, fitted into female and male molds of the same shape as above at room temperature, and cooled for a second predetermined time. This is a manufacturing method in which the product is removed after being removed.
この発明で用いられる不織布熱溶融型接着剤と
はエチレン―酢酸ビニル共重合体、ポリアミド樹
脂、ポリエステル樹脂の繊維からなる不織布状の
熱溶融型接着剤であり、この接着剤は、接着剤層
の重量が軽いことと接着時間が短いという特徴を
有している。 The non-woven hot-melt adhesive used in this invention is a non-woven hot-melt adhesive made of fibers of ethylene-vinyl acetate copolymer, polyamide resin, and polyester resin. It has the characteristics of light weight and short adhesion time.
この接着剤を連続複数筒状の芯材と薄膜の接着
に用いると、加熱して接着剤が溶融するとき連続
複数筒状芯材と薄膜の接触部に集りやすく第４図
Ｂに示すようにフイレツト（接着剤の盛上り）を
良く形成することが実験的に明らかになつた。従
つて、この接着剤を用いれば少量の接着剤で十分
な強度が得られる。 When this adhesive is used to bond a continuous plurality of cylindrical core materials and a thin film, when it is heated and melted, it tends to gather at the contact area between the continuous plurality of cylindrical core materials and the thin film, as shown in Figure 4B. It has been experimentally revealed that fillets (swells of adhesive) can be formed well. Therefore, if this adhesive is used, sufficient strength can be obtained with a small amount of adhesive.
以下図示実施例に従いこの発明の詳細について
さらに説明する。 The details of this invention will be further explained below with reference to the illustrated embodiments.
第４図はこの発明の一実施例である直径22cmの
コーン型スピーカ振動板の断面図の一部を示した
ものである。この振動板を構成している芯材（コ
ア）１は六角形筒体の単位コア（セル）２を多数
互いに隣接して並べられてハニカム状に形成され
ている。このコア１は厚さ0.05mmの紙箔により高
さ３mm、セルの中空部の最小径は９mmに形成され
ており、重量は約3.3gである。コア１の表裏面に
貼着される薄膜３は天然繊維よりコーン状に抄き
上げた厚さ0.2mmの紙箔であり重量は表裏面合計
で約13gである。５は溶融前のポリアミド樹脂不
織布状熱溶融型接着剤で融点は120℃、重量は
30g／m2である。６は溶融固化後の接着剤であ
り、この実施例における重量は約25gである。従
つてこの実施例における振動板の総重量は約
18.8gである。なおこの図でＡは溶融固化前の状
態を、Ｂは溶融固化後の状態を示す。 FIG. 4 shows a part of a sectional view of a cone-shaped speaker diaphragm having a diameter of 22 cm, which is an embodiment of the present invention. A core material (core) 1 constituting this diaphragm is formed into a honeycomb shape by arranging a large number of unit cores (cells) 2 of hexagonal cylinders adjacent to each other. This core 1 is made of paper foil with a thickness of 0.05 mm and has a height of 3 mm, a minimum diameter of the hollow part of the cell of 9 mm, and a weight of about 3.3 g. The thin film 3 attached to the front and back surfaces of the core 1 is a 0.2 mm thick paper foil made into a cone shape from natural fibers, and the total weight of the front and back surfaces is about 13 g. 5 is a polyamide resin non-woven hot-melt adhesive before melting, with a melting point of 120°C and a weight of
It is 30g/ m2 . 6 is the adhesive after being melted and solidified, and the weight in this example is about 25 g. Therefore, the total weight of the diaphragm in this example is approximately
It is 18.8g. In this figure, A shows the state before melting and solidifying, and B shows the state after melting and solidifying.
ところが従来の液状接着剤を用いる方法では如
何に薄く塗布しても同じコーン型スピーカの振動
板には片面約5g、両面で約10g必要であり、これ
以上少なくすると部分的に接着不良を生じる。従
つて振動板の総重量は約26.3gになる。また熱硬
化性フイルム状接着剤を使用した場合は、これよ
りやや軽くなるが両面で約6g必要であり振動板
の総重量は約22.3gになる。 However, in the conventional method of using liquid adhesive, no matter how thinly applied, the diaphragm of the same cone-shaped speaker requires about 5 g on one side and about 10 g on both sides, and if it is less than this, adhesion will partially occur. Therefore, the total weight of the diaphragm is approximately 26.3g. If a thermosetting film adhesive is used, it will be slightly lighter, but it will require about 6g on both sides, making the total weight of the diaphragm about 22.3g.
このようにこの実施例によるものでは直径22cm
コーン型スピーカの振動板の場合、従来の液状接
着剤を用いるものに比べ約28.5％、熱硬化性フイ
ルム状接着剤円用いるものに比べ約15.7％軽くで
きる。 In this example, the diameter is 22cm.
The diaphragm of a cone-shaped speaker can be approximately 28.5% lighter than one using conventional liquid adhesive, and approximately 15.7% lighter than one using thermosetting film adhesive.
なお上記実施例のようにポリアミド樹脂不織布
状熱溶融型接着剤を用いると耐熱性に優れた振動
板を得ることができる。 Note that if a polyamide resin nonwoven fabric hot-melt adhesive is used as in the above embodiment, a diaphragm with excellent heat resistance can be obtained.
またポリエステル樹脂不織布状熱溶融型接着剤
を用いれば芯材と薄膜との接着強度に優れた振動
板を得ることができる。 Further, by using a polyester resin nonwoven fabric hot-melt adhesive, a diaphragm with excellent adhesive strength between the core material and the thin film can be obtained.
次にこの発明によるスピーカ振動板の製造方法
の一実施例について説明する。 Next, an embodiment of the method for manufacturing a speaker diaphragm according to the present invention will be described.
第５図に示すように上内面がコーン形に形成さ
れ周側面にヒーター７を有する雌金型８をヒータ
ー１１により約200℃に加熱し、この雌金型８の
コーン状形成面にそれぞれコーン状に形成された
薄膜、不織布状熱溶融型接着剤、ハニカムコアの
芯材、不織布状熱溶融型接着剤、薄膜をこの順に
積層したものを載置し、下外面がコーン形に形成
され周側面にヒーター９を、上面に加圧装置１０
を有する雄金型１１を同様ヒーター９により約
200℃に加熱した後、積層振動板素材の上面から
載置し、加圧装置により約１分間加圧する。しか
る後この両金型８，１１から取り出し、第６図に
示すように上記雌金型８および雄金型１１と同形
状であるがヒーターを有していず室温である雌金
型１２および雄金型１３間に嵌合し約１分間加圧
冷却する。この後両金型１２，１３から取り外す
と、この時点で接着剤は冷却固化しているため接
着は完了している。従つて組立作業は５分以内で
完了し、量産性に優れる。 As shown in FIG. 5, a female mold 8 having a cone-shaped upper inner surface and a heater 7 on the circumferential side is heated to about 200°C by a heater 11, and a cone is attached to each cone-shaped surface of the female mold 8. A thin film formed in the shape of a cone, a non-woven hot-melt adhesive, a honeycomb core core material, a non-woven hot-melt adhesive, and a thin film laminated in this order are placed, and the lower outer surface is formed into a cone shape and the outer surface is formed into a cone shape. Heater 9 on the side and pressure device 10 on the top
Similarly, the male mold 11 having a
After heating to 200°C, it is placed on the top of the laminated diaphragm material and pressurized for about 1 minute using a pressurizing device. After that, both the molds 8 and 11 are taken out, and as shown in FIG. It is fitted between the molds 13 and cooled under pressure for about 1 minute. When both molds 12 and 13 are then removed, the adhesive has cooled and solidified at this point, so the adhesion is complete. Therefore, assembly work can be completed within 5 minutes, and mass productivity is excellent.
なお前記実施例ではコーン形状の振動板につい
て説明したがこれに限ぎらず平板状振動板、円錐
形の母線に沿つた断面形状が任意形状の曲線を有
した振動板にも適用できる。 In the above embodiments, a cone-shaped diaphragm was described, but the present invention is not limited to this, and can also be applied to a flat diaphragm or a diaphragm whose cross-sectional shape along a conical generatrix has an arbitrary curve.
また連続複数筒状体の筒形状は六角形のハニカ
ム状に限ぎらず、円形や四角形および五角形等そ
の形は問わない。 Further, the shape of the cylinder of the continuous plurality of cylinders is not limited to a hexagonal honeycomb shape, but may be circular, square, pentagonal, or the like.
以上述べたようにこの発明による不織布状熱溶
融型接着剤を用いて一体化した連続複数筒状芯材
の開口両面に薄膜を貼着したサンドイツチ構造の
振動板は、従来のサンドイツチ構造の振動板に比
べ軽量であるため音圧が高く、しかも所望の形状
に形成され、かつ所定温度に加熱された金型間に
薄膜、接着剤、芯材、接着剤、薄膜の順に積層し
たものを嵌合加圧した後、同形室温の金型間に嵌
合して冷却し製作する方法としているので、従来
に比べ製作時間を短縮でき量産性が良好である。 As described above, the diaphragm of the sanderch structure in which thin films are attached to both sides of the openings of a continuous plurality of cylindrical core members integrated using a non-woven hot-melt adhesive according to the present invention is different from the diaphragm of the conventional sanderch structure. Because it is lighter than the previous model, the sound pressure is higher, and the thin film, adhesive, core material, adhesive, and thin film are laminated in this order between molds that are formed into the desired shape and heated to a predetermined temperature. After being pressurized, the product is manufactured by fitting it between molds of the same shape at room temperature and cooling it, which reduces manufacturing time and improves mass productivity compared to conventional methods.
第１図はスピーカの音圧―周波数特性図、第２
図および第３図は従来のハニカム構造スピーカ用
振動板の要部を示す切欠平面図および縦断面図、
第４図はこの発明による一実施例の要部を示す断
面図であり、Ａは接着前の状態を、Ｂは接着後の
状態を示す。第５図はこの発明の製造方法の一実
施例であり、接着成形工程を示す縦断面図、第６
図は冷却工程を示す縦断面図である。
図中同一符号は同一または相当部分を示し、１
は芯材としてのハニカム状コア、２は単位コア、
３は薄膜、５は不織布状熱溶融型接着剤、６は固
化後の接着剤、７はヒーター、８は雌金型、９は
ヒーター、１０は加圧装置、１１は雄金型、１２
は雌金型、１３は雄金型である。
Figure 1 is the sound pressure-frequency characteristic diagram of the speaker, Figure 2
3 and 3 are a cutaway plan view and a vertical sectional view showing the main parts of a conventional honeycomb structure speaker diaphragm,
FIG. 4 is a sectional view showing a main part of an embodiment according to the present invention, where A shows the state before adhesion and B shows the state after adhesion. FIG. 5 is an embodiment of the manufacturing method of the present invention, and is a vertical cross-sectional view showing the adhesive molding process.
The figure is a longitudinal sectional view showing the cooling process. The same symbols in the figures indicate the same or corresponding parts, 1
is a honeycomb-shaped core as a core material, 2 is a unit core,
3 is a thin film, 5 is a non-woven hot-melt adhesive, 6 is an adhesive after solidification, 7 is a heater, 8 is a female mold, 9 is a heater, 10 is a pressure device, 11 is a male mold, 12
1 is a female mold, and 13 is a male mold.
Claims (1)
と高分子材とを混在したものの何れか一種の薄膜
よりなり、筒状体をその周側面で連続させた形状
のものを芯材とし、その開口面両面に金属もしく
は高分子材料もしくは紙または紙と高分子材料と
を混在したものの何れか一種の薄膜を不織布状熱
溶融型接着剤を用いて一体化したことを特徴とす
るスピーカ用振動板。 ２ 不織布状熱溶融型接着剤としてポリアミド樹
脂の不織布を用いたことを特徴とする特許請求の
範囲第１項記載のスピーカ用振動板。 ３ 不織布状熱溶融型接着剤としてポリエステル
樹脂の不織布を用いたことを特徴とする特許請求
の範囲第１項記載のスピーカ用振動板。 ４ 上面が所望の形状に形成され、所定温度に加
熱された金型上に薄膜、不織布状熱溶融型接着
剤、連続複数筒状の芯材、不織布状熱溶融型接着
剤、薄膜の順に積層したものを載置し、下面が上
記金型上面と対応した形状に形成され、かつ所定
温度に加熱された金型でこの上面から第１の所定
時間加圧した後取り出し、この後上記と同形かつ
室温の両金型間に嵌合して第２の所定時間冷却し
てなるスピーカ用振動板の製造方法。[Claims] 1. The core material is made of a thin film of any one of metal, polymeric material, paper, or a mixture of paper and polymeric material, and has a shape in which a cylindrical body is continuous on its peripheral side. and a thin film of any one of metal, polymeric material, paper, or a mixture of paper and polymeric material is integrated on both sides of the opening surface using a non-woven hot-melt adhesive. diaphragm for use. 2. A diaphragm for a speaker according to claim 1, characterized in that a nonwoven fabric of polyamide resin is used as the nonwoven fabric hot-melt adhesive. 3. A diaphragm for a speaker according to claim 1, characterized in that a nonwoven fabric made of polyester resin is used as the nonwoven fabric hot-melt adhesive. 4 Laminate the thin film, non-woven hot-melt adhesive, continuous plural cylindrical core material, non-woven hot-melt adhesive, and thin film on the mold whose upper surface is formed into a desired shape and heated to a predetermined temperature. A mold whose lower surface is formed in a shape corresponding to the upper surface of the mold and which is heated to a predetermined temperature is used to pressurize the upper surface for a first predetermined time and then taken out. A method of manufacturing a speaker diaphragm, which is fitted between two molds at room temperature and cooled for a second predetermined period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15499080A JPS5779797A (en) | 1980-11-04 | 1980-11-04 | Diaphragm for speaker and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15499080A JPS5779797A (en) | 1980-11-04 | 1980-11-04 | Diaphragm for speaker and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5779797A JPS5779797A (en) | 1982-05-19 |
| JPS6130479B2 true JPS6130479B2 (en) | 1986-07-14 |
Family
ID=15596299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15499080A Granted JPS5779797A (en) | 1980-11-04 | 1980-11-04 | Diaphragm for speaker and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5779797A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999062295A1 (en) * | 1998-05-28 | 1999-12-02 | Michael Sacks | Acoustic panel |
| US6508947B2 (en) | 2001-01-24 | 2003-01-21 | Xerox Corporation | Method for fabricating a micro-electro-mechanical fluid ejector |
| US6572218B2 (en) | 2001-01-24 | 2003-06-03 | Xerox Corporation | Electrostatically-actuated device having a corrugated multi-layer membrane structure |
| JP2007312269A (en) * | 2006-05-22 | 2007-11-29 | Kyocera Chemical Corp | Diaphragm for planar speaker and planar speaker using the same |
| CN103826838B (en) * | 2011-09-30 | 2016-03-23 | 日铁住金建材株式会社 | Comprise complex structure body and the manufacture method thereof of resin structure and metallic plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5541066A (en) * | 1978-09-19 | 1980-03-22 | Sony Corp | Diaphragm for electroacoustic converter |
-
1980
- 1980-11-04 JP JP15499080A patent/JPS5779797A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5541066A (en) * | 1978-09-19 | 1980-03-22 | Sony Corp | Diaphragm for electroacoustic converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5779797A (en) | 1982-05-19 |
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