JPH03254598A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPH03254598A JPH03254598A JP5322990A JP5322990A JPH03254598A JP H03254598 A JPH03254598 A JP H03254598A JP 5322990 A JP5322990 A JP 5322990A JP 5322990 A JP5322990 A JP 5322990A JP H03254598 A JPH03254598 A JP H03254598A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- base material
- paper base
- paper
- pulp
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000005524 ceramic coating Methods 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 14
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 239000011256 inorganic filler Substances 0.000 claims abstract description 9
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 9
- 150000004706 metal oxides Chemical class 0.000 claims description 13
- 239000002585 base Substances 0.000 abstract description 23
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 238000010009 beating Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 240000000907 Musa textilis Species 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 1
- 238000004040 coloring Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 8
- 150000004703 alkoxides Chemical class 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- -1 alkali metal salts Chemical class 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 2
- 239000011225 non-oxide ceramic Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はセラミックを用いてなるスピーカ用振動板に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a speaker diaphragm made of ceramic.
（従来の技術）
スピーカ用振動板に要望される物性は、密度が小さく高
弾性で高内部損失を有し、機械的疲労がなく、耐湿性、
耐熱性、耐水性、耐光性、耐食性、抗菌性、不燃性等を
有することである。(Prior art) The physical properties required for a speaker diaphragm are low density, high elasticity, high internal loss, no mechanical fatigue, moisture resistance,
It has properties such as heat resistance, water resistance, light resistance, corrosion resistance, antibacterial properties, and nonflammability.
しかして、スピーカ用振動板の材質としては種々のもの
が存在するが、このうち、−船釣には植物繊維を素材と
するパルプからなる紙製の振動板が広く使用されている
。すなわち、パルプは植物体より取り出したセルロース
を主体とした植物繊維の集合体であり、このパルプを用
いた紙製の振動板は、パルプを叩解し、パルプに染色、
サイズ処理を施し、かつ水に分散し、抄紙、乾燥して作
製される。There are various materials for speaker diaphragms, and among these, paper diaphragms made of pulp made from vegetable fibers are widely used for boat fishing. In other words, pulp is an aggregate of plant fibers mainly composed of cellulose extracted from plants, and paper diaphragms using this pulp are made by beating the pulp, dyeing it, and then dyeing it.
It is made by sizing, dispersing in water, making paper, and drying.
従って、振動板の力学物性は使用される単繊維の物性と
繊維間結合強度並びに振動板の密度で決定される。Therefore, the mechanical properties of the diaphragm are determined by the physical properties of the single fibers used, the bond strength between the fibers, and the density of the diaphragm.
しかし、植物繊維を用いた振動板は天然繊維であるため
、単繊維の物性が限定されることと、パルプがセルロー
スで構成されているため、サイズ処理を行っても湿度に
影響されやすい欠点がある。However, since diaphragms using plant fibers are natural fibers, the physical properties of single fibers are limited, and since the pulp is composed of cellulose, they have the disadvantage that they are easily affected by humidity even after sizing. be.
一方、繊維を用いた振動板は単繊維物性と織雑間結合状
連を変えることにより振動板のヤング率、密度、内部損
失等を任意に変えることが出来るので、単繊維のヤング
率が大きくて水分等に安定な繊維として、炭素繊維が使
用されている。On the other hand, in a diaphragm using fibers, the Young's modulus, density, internal loss, etc. of the diaphragm can be changed arbitrarily by changing the physical properties of the single fibers and the interweaving connections, so the Young's modulus of the single fibers is large. Carbon fiber is used as a fiber that is stable against moisture.
この炭素繊維は植物繊維と異なり、繊維間を直接水素結
合等で結合することは出来ないので、エポキシ樹脂等で
繊維間を結合する必要がある。このようにして作製され
た炭素繊維使用の振動板はヤング率を大きくすることは
出来るが、内部損失が小さくなる欠点がある。Unlike vegetable fibers, this carbon fiber cannot be directly bonded between fibers by hydrogen bonding or the like, so it is necessary to bond the fibers together using an epoxy resin or the like. A diaphragm using carbon fiber manufactured in this way can have a large Young's modulus, but has the disadvantage of a small internal loss.
また、紙製の振動板において、内部損失が比較的大きく
、高弾性の振動板を得る方法として、実開昭６３−１５
６１９８号に示されるように、紙基材の表面にセラミッ
ク系のコーティング剤を塗布したりするものがある。In addition, as a method for obtaining a paper diaphragm with relatively large internal loss and high elasticity, Utility Model Application No. 63-15
As shown in No. 6198, there is a method in which a ceramic coating agent is applied to the surface of a paper base material.
また、特開昭６０−２４７４００号に示されるように、
紙基材表面に非酸化物系のセラミックス、金属、金属酸
化物をマトリックスとして溶射したものもある。In addition, as shown in Japanese Patent Application Laid-open No. 60-247400,
There are also products in which non-oxide ceramics, metals, or metal oxides are thermally sprayed as a matrix onto the surface of a paper base material.
（発明が解決しようとする課Ｉり
しかしながら、前者のものではコーティング剤としてセ
ラミックを主原料としているが被膜形成剤等にエポキシ
樹脂、塩化ビニール樹脂等の有機物質が使用されている
ため、結局、所望の高弾性を有する振動板を得ることは
できず、かつ三層構造で構成が複雑であるなどの課題が
ある。(Issues to be Solved by the Invention)However, although the former uses ceramic as the main raw material for the coating agent, organic substances such as epoxy resin and vinyl chloride resin are used as film-forming agents. There are problems in that it is not possible to obtain a diaphragm with the desired high elasticity, and the structure is complicated due to the three-layer structure.
また、後者の紙基材表面に非酸化物系のセラミックス、
金属、金属酸化物をマトリックスとして溶射する方法は
装置が高価なことと、大形基材へのコーティングが困難
となりコストアップの要因となる、といった課題がある
。In addition, non-oxide ceramics are added to the surface of the latter paper base material.
The method of thermal spraying using a metal or metal oxide as a matrix has problems such as expensive equipment and difficulty in coating large substrates, which increases costs.
さらに、従来のセラミックを用いた振動板は、セラミッ
クが旋いため、運搬時や組立時の振動や衝撃等によって
破損するおそれがあり、耐久性に欠けるといった課題が
ある。Furthermore, conventional diaphragms using ceramics have the problem of lacking durability because the ceramic is twisted, so there is a risk of damage due to vibrations, impacts, etc. during transportation or assembly.
本発明は上記のことに鑑み提案されたもので、その目的
とするところは、紙製の振動板において、その内部損失
を保持し、高弾性を有し、所望の剛性などを備え、また
、耐久性があり、製造が容易で安価なスピーカ用振動板
を提供することにある。The present invention has been proposed in view of the above, and aims to provide a paper diaphragm that maintains its internal loss, has high elasticity, and has desired rigidity. To provide a speaker diaphragm that is durable, easy to manufacture, and inexpensive.
（課題を解決するための手段）
本発明は、所定の形状に抄造された紙基材の表面に、金
属酸化物系ポリマーを主体としたもの、またはこれと無
機質フィラーとで構成されたセラミックコーティング剤
を塗布し、常温乾燥または加熱乾燥し前記紙基材表面に
セラミック膜を形成することにより、上記目的を達成し
ている。(Means for Solving the Problems) The present invention provides a ceramic coating on the surface of a paper base material made into a predetermined shape, consisting mainly of a metal oxide polymer or consisting of this and an inorganic filler. The above object is achieved by coating the paper with a ceramic film and drying it at room temperature or heating to form a ceramic film on the surface of the paper base material.
（作 用）
本発明では上記のように、被膜形成剤にエポキシ樹脂等
の有機物質を用いることなく、金属酸化物系ポリマーを
用い、高弾性であって剛性のある紙製振動板を得ること
ができる。(Function) As described above, in the present invention, a highly elastic and rigid paper diaphragm can be obtained by using a metal oxide polymer as a film forming agent without using an organic substance such as an epoxy resin. I can do it.
また、無機質フィラーを添加し、この際、セラもンクバ
インダーの化学結合を無機フィラーの添加と反応条件と
をコントロールすることにより、セラミック特有の晩さ
を解消し、セラミックがコーティングされているにも拘
らず耐久性のある振動板を得ることができるようにして
いる。In addition, by adding an inorganic filler and controlling the chemical bond of the Ceramonc binder by controlling the addition of the inorganic filler and the reaction conditions, the slowness characteristic of ceramics can be eliminated, and even when ceramic is coated. This makes it possible to obtain a durable diaphragm regardless of the situation.
さらに、セラミックコーティング剤を紙基材の表面に塗
布する構成とし、溶射のような特別な装置を用いなくて
も良いため、コストパフォーマンスに優れ、安価な振動
板を実現している。Furthermore, since the ceramic coating agent is applied to the surface of the paper base material and there is no need to use special equipment such as thermal spraying, the diaphragm has excellent cost performance and is inexpensive.
（実施例） 以下に本発明の詳細な説明する。(Example) The present invention will be explained in detail below.
金属酸化物系ポリマーにはアルカリ金属塩と金属アルコ
キシドがある。実施例（Ｎはアルカリ金属塩でセラくツ
タコーティング皮膜を作製した場合であり、実施例（Ｉ
Ｉ）は金属アルコキシドでセラミックコーティング皮膜
を作製した場合である。Metal oxide polymers include alkali metal salts and metal alkoxides. Example (N is the case where a ceramic ivy coating film was prepared with an alkali metal salt, and Example (I)
I) is a case where a ceramic coating film was prepared using a metal alkoxide.
また、紙基材は次のように作製したが、実施例（１）（
ｎ）で使用したものは同様に作製したものである。In addition, the paper base material was prepared as follows, but Example (1) (
The material used in n) was produced in the same manner.
紙基材はＮＢＫＰ８０％、マニラ麻パルプ２０％をビー
タ−に投入し、叩解度が２３°ＳＲになるまで叩解し、
叩解後のパルプを染料とサイズ剤とで染色、サイズ処理
した。処理されたパルプ材は水に希釈し、抄紙機にて所
定の形状に抄紙し乾燥して作製した。For the paper base material, 80% NBKP and 20% Manila hemp pulp were put into a beater and beaten until the degree of beating became 23°SR.
The pulp after beating was dyed and sized using a dye and a sizing agent. The treated pulp material was diluted with water, made into paper into a predetermined shape using a paper machine, and dried.
（実施例Ｉ〕
アルカリ金属塩が金属酸化物皮膜を形成する化学反応は
下記のように進行することが知られている。(Example I) It is known that the chemical reaction in which an alkali metal salt forms a metal oxide film proceeds as follows.
Ｍ’、Ｏ・ｎＭｏ、 ＋ＬＯ→Ｍ”＋ＯＲ−＋ｎＬＭＯ
ｎＭ”＋Ｍ”Ｏ−＋ｎ１１４Ｍ０ａ→Ｍ’Ｍ”Ｏ＋ ｎ
ＨＪＯ４（↓）ここで、Ｍ：Ｓｉなどの金属、Ｍ’ ：
Ｌｉ、Ｎａなと、Ｍ” ： Ｚｎ、Ｍｇ、Ｃａなどの
硬化剤が用いられている。M', O・nMo, +LO→M"+OR-+nLMO
nM"+M"O-+n114M0a→M'M"O+ n
HJO4 (↓) where, M: metal such as Si, M':
Hardening agents such as Li, Na, M'': Zn, Mg, and Ca are used.
本実施例で使用したものはＭは５３と丁ｊであり、Ｍｌ
はＬｉを使用した。上記のようなアルカリ金属塩のコー
ティング剤として固形分４３〜４７％の水溶液を作製し
た０作製した水溶液の物性は比重が１、３〜１．４、粘
度３００〜５００ｃｐ、 ｐＨは１１である。In this example, M is 53 and M is 53, and Ml is
used Li. An aqueous solution having a solid content of 43 to 47% was prepared as a coating agent of the alkali metal salt as described above.The physical properties of the aqueous solution prepared were as follows: specific gravity of 1.3 to 1.4, viscosity of 300 to 500 cp, and pH of 11.
塗布方法は上記紙基材からなる振動板の表面に重量比で
約３０％のコーティング剤を刷毛で塗布した。The coating method was to apply a coating agent of about 30% by weight to the surface of the diaphragm made of the paper base material using a brush.
塗布後、室温にて５分間放置後、１５０℃で２０分間乾
燥した。得られた無機皮膜（主成分はＴｉｅ、。After coating, it was left at room temperature for 5 minutes and then dried at 150°C for 20 minutes. The obtained inorganic film (main component is Tie.
Ｓｉｎ、、無機フィラー等）の硬度は鉛筆硬度で８〜９
Ｈであり、電気絶縁性のよいセラくツタ特有の耐久性の
ある皮膜が得られた。Sin, inorganic fillers, etc.) have a pencil hardness of 8 to 9.
H, and a durable film with good electrical insulation characteristic of Ceraku ivy was obtained.
紙基板に塗布された振動板は高弾性を有し適度の内部損
失を有する振動板が得られた。この振動板を組込んだ直
径１６Ｃ１のスピーカの音響特性を第１図に示す、第１
図中−点鎖線で示したＡはこの実施例によるもの、実線
のＢは紙製振動板の特性図であり、振動板としての耐久
性と電気電導性は従来の紙製振動板と比較して良好な結
果となるので、スピーカの組立方法も従来の方法と同様
に作製することが出来、高品質のスピーカを安価に提供
することが出来る。The diaphragm coated on the paper substrate had high elasticity and a moderate internal loss. The acoustic characteristics of a speaker with a diameter of 16C1 incorporating this diaphragm are shown in Figure 1.
In the figure, the dotted line A shows the characteristics of this example, and the solid line B shows the characteristics of the paper diaphragm.The durability and electrical conductivity of the diaphragm are compared with the conventional paper diaphragm. Since good results are obtained, the speaker can be assembled using the same method as the conventional method, and high-quality speakers can be provided at low cost.
金属アルコキシドが金属酸化物皮膜を形成する化学反応
は下記のように進行することが知られている。It is known that the chemical reaction in which a metal alkoxide forms a metal oxide film proceeds as follows.
Ｍ（ＯＲ） ｍ ＋ ｎＨ＊ｏ→Ｍ（ＯＲ） −＋ ｎ
ＲＯＨＭ （ＯＨ）、→Ｍｏ１ｔ／！ ＋ＨｔＯ本実施
例ではＭはＳｉとＴｉを使用した０紙基材表面に塗布ま
たは付着した金属アルコキシド［Ｍ（０１？）、 ）は
上記反応の過程で、ゾルの状態、ゲルの状態を経過して
金属酸化物の固化体となる。M(OR) m + nH*o→M(OR) −+ n
ROHM (OH), →Mo1t/! +HtO In this example, M is Si and Ti. The metal alkoxide [M(01?), and becomes a solidified metal oxide.
紙基材に塗布する金属アルコキシド系コーティグ剤は下
記のように作製した。A metal alkoxide coating agent to be applied to a paper base material was prepared as follows.
皮膜形成剤（バインダー）となるＳｉ、 Ｔｉの金属ア
ルコキシドのメタノール溶液は、所定の方法にて作製し
た。この溶液の溶液物性は固形分が２３％、比重１．０
、粘度１６ｃｐである。コーティング皮膜の外観と物性
を変えるためにコーティング剤は下表のように配合した
ものを使用した。A methanol solution of metal alkoxides of Si and Ti to serve as a film forming agent (binder) was prepared by a predetermined method. The physical properties of this solution are that the solid content is 23% and the specific gravity is 1.0.
, viscosity 16 cp. In order to change the appearance and physical properties of the coating film, the coating agents were mixed as shown in the table below.
コーチイブ剤の配合
１、皮膜形成剤（バインダー） ３００ｇ固形分
として
２、カーボングラファイト粉 ３０ｇ３、ステ
ンレス粉 ２５０ｇ４、溶剤
４２０ｇ
作製したコーティング剤は固形分が５８％で粘度は５０
０ｃｐのものである。Combination of coachib agent 1, Film forming agent (binder) 300g solid content 2, Carbon graphite powder 30g3, Stainless steel powder 250g4, Solvent
420g The prepared coating agent has a solid content of 58% and a viscosity of 50%.
It is of 0 cp.
塗布方法は上記紙基材表面に基材重量に対して重量比で
約２０％のコーティング剤をエアースプレーで均一に塗
布した。塗布されたものは室温に５分間放置後１５０°
Ｃで２０分間強制乾燥した。The coating method was to uniformly apply a coating agent on the surface of the above paper base material by air spray in a weight ratio of about 20% based on the weight of the base material. The coated item is left at room temperature for 5 minutes and then heated to 150°.
It was force-dried at C for 20 minutes.
得られたコーティング皮膜の物性は鉛筆硬度で８〜９Ｈ
の硬度を有し、電気電導性のない、セラミック特有の耐
久性のある皮膜であった。紙基材に塗布された振動板の
部分断面図を第２図に、また、本実施例で作製した振動
板を用いた直径１６Ｃ１１のスピーカの周波数特性を第
３図に示した。すなわち、第２図中１は紙製振動板基材
、２はその表面に塗布されたセラミックコーティング膜
、２ａは紙製振動板基材２に浸透したセラミックコーテ
ィング剤の浸透部分である。また、第３図において、−
点鎖線のＣは第２実施例、Ｄは単なる紙製振動板の特性
図である。The physical properties of the obtained coating film are 8-9H in terms of pencil hardness.
It was a durable film unique to ceramics, with a hardness of FIG. 2 shows a partial cross-sectional view of the diaphragm coated on a paper base material, and FIG. 3 shows the frequency characteristics of a speaker with a diameter of 16C11 using the diaphragm manufactured in this example. That is, in FIG. 2, 1 is a paper diaphragm base material, 2 is a ceramic coating film applied to the surface thereof, and 2a is a permeated portion of the ceramic coating agent that has penetrated into the paper diaphragm base material 2. Moreover, in FIG. 3, -
The dashed dotted line C indicates the second embodiment, and the dashed line D indicates the characteristics of the paper diaphragm.
なお、上記各実施例ではセラミックコーティング剤を、
金属酸化物系ポリマーと無機質フィラーとで構成した例
について説明したが、無機質フィラーを用いないもので
あっても良い。In addition, in each of the above examples, the ceramic coating agent was
Although an example has been described in which a metal oxide polymer and an inorganic filler are used, it is also possible to use one that does not use an inorganic filler.
（発明の効果）
以上のように本発明によれば、所定の形状に抄造された
紙基材の表面に、金属酸化物系ポリマーを主体としたも
ので構威されたセラミックコーティング剤を塗布し、常
温乾燥または加熱乾燥し前記紙基材表面にセラミック膜
を形成して構威し、被膜形成剤に金属酸化物系ポリマー
を主体とするものを用いたため、高弾性の紙製振動板を
得ることができる。(Effects of the Invention) As described above, according to the present invention, a ceramic coating agent mainly composed of a metal oxide polymer is applied to the surface of a paper base material made into a predetermined shape. , by drying at room temperature or heating to form a ceramic film on the surface of the paper base material, and by using a film-forming agent mainly composed of a metal oxide polymer, a highly elastic paper diaphragm can be obtained. be able to.
また、無機フィラーを添加したものにおいては、セラミ
ック特有の脆さがなくなり、耐久性を大巾に向上させる
ことができる。Moreover, in the case of adding an inorganic filler, the brittleness peculiar to ceramics is eliminated, and the durability can be greatly improved.
さらに、通常の塗装のように紙基材の表面にセラミック
コーティング剤を塗布させ、乾燥させるといった簡易構
成としたから、特別の特殊な装置が不要で製造が容易と
なり、かつ量産性に優れ、安価な振動板、ひいては安価
なスピーカを得ることができる。Furthermore, since the ceramic coating agent is simply applied to the surface of the paper base material and dried like normal painting, manufacturing is easy without the need for any special equipment, and it is also highly mass-producible and inexpensive. This makes it possible to obtain a cheap diaphragm and, by extension, an inexpensive speaker.
等の効果がある。There are other effects.
第１図は本発明の第１実施例にてなる振動板を備えたス
ピーカの周波数特性図、第２図は本発明の振動板の部分
断面図、第３図は本発明の第２実施例の振動板を用いた
スピーカの周波数特性図を示す。
１・・・紙製振動板基材
２・・・セラミックコーティング膜
２ａ・・・セラミックコーティング剤の浸透部分（ほか
１名）
第２図
（ＥＩｐ） １／＼１１蟇FIG. 1 is a frequency characteristic diagram of a speaker equipped with a diaphragm according to a first embodiment of the present invention, FIG. 2 is a partial sectional view of the diaphragm of the present invention, and FIG. 3 is a diagram of a second embodiment of the present invention. This figure shows a frequency characteristic diagram of a speaker using a diaphragm. 1...Paper diaphragm base material 2...Ceramic coating film 2a...Permeation part of ceramic coating agent (1 other person) Figure 2 (EIp) 1/\11 Toad
Claims (2)
化物系ポリマーを主体としたもので構成されたセラミッ
クコーティング剤を塗布し、常温乾燥または加熱乾燥し
前記紙基材表面にセラミック膜を形成したことを特徴と
するスピーカ用振動板。(1) A ceramic coating agent mainly composed of a metal oxide polymer is applied to the surface of a paper base material made into a predetermined shape, and dried at room temperature or under heat to coat the surface of the paper base material. A speaker diaphragm characterized by forming a ceramic film.
リマーに無機質フィラーを添加して構成したことを特徴
とする請求項（１）記載のスピーカ用振動板。(2) The speaker diaphragm according to claim 1, wherein the ceramic coating agent is formed by adding an inorganic filler to the metal oxide polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322990A JP2908828B2 (en) | 1990-03-05 | 1990-03-05 | Speaker diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322990A JP2908828B2 (en) | 1990-03-05 | 1990-03-05 | Speaker diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03254598A true JPH03254598A (en) | 1991-11-13 |
| JP2908828B2 JP2908828B2 (en) | 1999-06-21 |
Family
ID=12936993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5322990A Expired - Lifetime JP2908828B2 (en) | 1990-03-05 | 1990-03-05 | Speaker diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2908828B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018008347A1 (en) | 2016-07-04 | 2018-01-11 | パナソニックＩｐマネジメント株式会社 | Oscillatory component for loudspeakers, loudspeaker comprising same, and mobile device equipped with said loudspeaker |
-
1990
- 1990-03-05 JP JP5322990A patent/JP2908828B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018008347A1 (en) | 2016-07-04 | 2018-01-11 | パナソニックＩｐマネジメント株式会社 | Oscillatory component for loudspeakers, loudspeaker comprising same, and mobile device equipped with said loudspeaker |
| US10708693B2 (en) | 2016-07-04 | 2020-07-07 | Panasonic Intellectual Property Management Co., Ltd. | Oscillatory component for loudspeakers, loudspeaker comprising same, and mobile device equipped with said loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2908828B2 (en) | 1999-06-21 |
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