JPH0667035B2 - Vibration plate for speakers - Google Patents
Vibration plate for speakersInfo
- Publication number
- JPH0667035B2 JPH0667035B2 JP4923487A JP4923487A JPH0667035B2 JP H0667035 B2 JPH0667035 B2 JP H0667035B2 JP 4923487 A JP4923487 A JP 4923487A JP 4923487 A JP4923487 A JP 4923487A JP H0667035 B2 JPH0667035 B2 JP H0667035B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- impregnated
- speaker
- speakers
- vibration plate
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 9
- 229920006243 acrylic copolymer Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 240000000907 Musa textilis Species 0.000 claims description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は各種音響機器に利用されるスピーカの振動板に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm of a speaker used in various audio equipment.
従来の技術 従来の振動板エッジ基材には、コーンと一体化された天
然パルプ１００％のフィックスドエッジ、又コーンと貼
り合わせるフリーエッジとしては天然パルプ，ＳＢＲ・
ＮＢＲ等の樹脂を含浸した布，ウレタン発泡体などがあ
った。Conventional technology Conventional diaphragm edge base material is 100% natural pulp fixed edge integrated with cone, and free edge to be bonded with cone is natural pulp, SBR.
There were cloths impregnated with resin such as NBR and urethane foams.
発明が解決しようとする問題点 フィックスドエッジはコーンと一体化されているため最
低共振周波数（0）が高く重低音再生ができない、フ
リーエッジの中で天然パルプは振幅をとりすぎるとエッ
ジが破壊するため入力を大きくできない、また布，ウレ
タン発泡体は重量が重くコストが高い、さらにフリーエ
ッジはコーン部とエッジ部を別々に成形して後で両者を
接着剤で貼り合わせる工程であるため振動板完成品のコ
ストが著るしく高くなるといった問題があった。従って
低コストで高耐入力，軽量さらにはコーン部との成形同
時接着可能なスピーカ用振動板を提供せんとするもので
ある。Problems to be solved by the invention Since fixed edges are integrated with cones, the lowest resonance frequency ( 0 ) is high and heavy bass reproduction is not possible. Natural pulp among free edges breaks if the amplitude is too large. Therefore, it is not possible to increase the input, and the cloth and urethane foam are heavy and costly. In addition, the free edge is a process in which the cone part and the edge part are molded separately and later they are attached with an adhesive, which causes vibration. There was a problem that the cost of the finished board was significantly high. Therefore, the purpose is to provide a speaker diaphragm that is low in cost, has high input resistance, is lightweight, and can be simultaneously molded and bonded to the cone portion.
問題点を解決するための手段 前記の問題点を解決するために本発明は、マニラ麻を原
料とした天然パルプの抄紙シート状の基材に酢酸ビニル
−アクリル共重合体樹脂を含浸し、さらにアクリル樹脂
を含浸したエッジ材とコーン部を成形同時接着してスピ
ーカ用振動板を構成しようとするものである。Means for Solving the Problems In order to solve the above problems, the present invention is to impregnate a vinyl acetate-acrylic copolymer resin into a paper-making sheet-shaped base material of natural pulp made from Manila hemp, and further to acryl. An edge material impregnated with a resin and a cone portion are molded and simultaneously bonded to form a speaker diaphragm.
作用 低コスト，軽量化さらには耐入力向上のためにマニラ麻
を原料とした天然パルプの抄紙シート状の基材に、特に
湿潤強度を向上させるために酢酸ビニル−アクリル共重
合体を含浸し、さらに成形同時接着のためにアクリル樹
脂を含浸する。酢酸ビニル−アクリル共重合体またアク
リル樹脂はどちらも熱硬化性であるため成形時に高温で
成形するとコーン部と接着され、振動板完成品を得るこ
とができる。Action In order to reduce cost, reduce weight, and further improve input resistance, a natural pulp papermaking sheet-like base material is impregnated with a vinyl acetate-acrylic copolymer to improve wet strength. Acrylic resin is impregnated for simultaneous molding. Since both the vinyl acetate-acrylic copolymer and the acrylic resin are thermosetting, when they are molded at a high temperature at the time of molding, they are bonded to the cone portion and a finished diaphragm product can be obtained.
実施例 以下、本発明の一実施例におけるスピーカ用振動板につ
いて説明する。Example Hereinafter, a speaker diaphragm according to an example of the present invention will be described.
マニラ麻を基材とした３５gr/m2の目付量の抄紙シート
材に酢酸ビニル−アクリル共重合体樹脂を８gr/m2含浸
し、乾燥後アクリル樹脂を３５gr/m2含浸し、乾燥す
る。このエッジ基材を所定の形状に打ち抜いた後、金型
温度１８０℃プレス時間４secの条件でコーン部と成形
同時接着し、振動板を得た。図に本発明のスピーカ用振
動板を使用したスピーカＡと、従来の布エッジを使用し
たスピーカＢのそれぞれの音圧周波数特性を示す。本発
明品は重量が軽いため音圧レベルが高く、またより高音
域まで再生している。Manila hemp vinyl acetate to the paper sheet material of the base material and the basis weight of 35gr / m 2 - acrylic copolymer resin 8gr / m 2 was impregnated, after drying acrylic resin 35gr / m 2 was impregnated and dried. After punching this edge base material into a predetermined shape, it was simultaneously molded and bonded to the cone portion under the conditions of a mold temperature of 180 ° C. and a pressing time of 4 seconds to obtain a vibration plate. The figure shows the sound pressure frequency characteristics of the speaker A using the speaker diaphragm of the present invention and the speaker B using the conventional cloth edge. Since the product of the present invention is light in weight, it has a high sound pressure level and reproduces even higher frequencies.
発明の効果 以上のように本発明の振動板は構成されるため、軽量で
低コスト，高耐入力のスピーカ用振動板を簡易な製造方
法で作ることが可能で、これにより大幅な合理化が図ら
れ、工業的価値の大なるものである。EFFECTS OF THE INVENTION Since the diaphragm of the present invention is configured as described above, a lightweight, low-cost, high-input loudspeaker diaphragm can be manufactured by a simple manufacturing method, which greatly simplifies the process. It is of great industrial value.
図は従来の振動板と本発明の振動板を用いたスピーカの
音圧周波数特性図である。The figure is a sound pressure frequency characteristic diagram of a speaker using the conventional diaphragm and the diaphragm of the present invention.
Claims (1)
ート状の基材に酢酸ビニル−アクリル共重合体樹脂を含
浸し、さらにアクリル樹脂を含浸したエッジ材をコーン
部と成形同時接着したスピーカ用振動板。1. A speaker for which a natural paper-making sheet-shaped base material made from Manila hemp is impregnated with a vinyl acetate-acrylic copolymer resin, and an edge material impregnated with an acrylic resin is molded and bonded simultaneously with a cone portion. Diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4923487A JPH0667035B2 (en) | 1987-03-04 | 1987-03-04 | Vibration plate for speakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4923487A JPH0667035B2 (en) | 1987-03-04 | 1987-03-04 | Vibration plate for speakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63215293A JPS63215293A (en) | 1988-09-07 |
| JPH0667035B2 true JPH0667035B2 (en) | 1994-08-24 |
Family
ID=12825205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4923487A Expired - Lifetime JPH0667035B2 (en) | 1987-03-04 | 1987-03-04 | Vibration plate for speakers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667035B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2665321A1 (en) * | 1990-07-23 | 1992-01-31 | Fontaine Pierre | PROCESS FOR MANUFACTURING MEMBRANES FOR ELECTRO-MECHANICAL APPLICATIONS, ESPECIALLY FOR ELECTRO-MECHANICAL TRANDUCTORS AND PRODUCT THEREOF. |
-
1987
- 1987-03-04 JP JP4923487A patent/JPH0667035B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63215293A (en) | 1988-09-07 |
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