JPS639440B2 - - Google Patents
Info
- Publication number
- JPS639440B2 JPS639440B2 JP55097918A JP9791880A JPS639440B2 JP S639440 B2 JPS639440 B2 JP S639440B2 JP 55097918 A JP55097918 A JP 55097918A JP 9791880 A JP9791880 A JP 9791880A JP S639440 B2 JPS639440 B2 JP S639440B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- speaker
- diaphragm
- present
- styrene
- 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
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 238000005452 bending Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000758 substrate Substances 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
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】
本発明は軽量で曲げ剛性に優れ、耐水性、耐溶
剤性の良好なスピーカ用振動板を提供しようとす
るものである。DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a speaker diaphragm that is lightweight, has excellent bending rigidity, and has good water resistance and solvent resistance.
従来におけるスピーカ用振動板としては、天然
パルプを主に使用していた。 Conventionally, natural pulp has been mainly used as a diaphragm for speakers.
最近では金属箔、樹脂フイルムを用いたスピー
カ用振動板も実用化されている。 Recently, speaker diaphragms using metal foil or resin film have also been put into practical use.
上記天然パルプによるスピーカ用振動板は軽量
で安価に量産化できるが、耐水性が悪く湿度変化
による影響によつてスピーカとしての特性が不安
定で音質が変化したり、曲げ剛性の点で劣るなど
十分満足できるものではなかつた。 The speaker diaphragm made from the natural pulp mentioned above is lightweight and can be mass-produced at low cost, but it has poor water resistance and has unstable speaker characteristics due to changes in humidity, resulting in changes in sound quality and poor bending rigidity. It wasn't completely satisfying.
また、アルミニウムなどの金属箔によるスピー
カ用振動板は、剛性の点で優れているが重くて成
形加工が困難であつた。軽量にするため厚さを薄
くすると曲げ剛性が悪くなり、内部損失が小さい
ため歪んだ音質になつてしまうものであつた。 Further, speaker diaphragms made of metal foil such as aluminum have excellent rigidity, but are heavy and difficult to mold. If the thickness was reduced in order to make it lightweight, the bending rigidity would deteriorate, and the internal loss would be small, resulting in distorted sound quality.
近年、ハニカム構造を有する平板状のスピーカ
用振動板も開発されているが、製作に手間を要し
高価なものになり、汎用性に乏しいといつた問題
がある。 In recent years, flat speaker diaphragms having a honeycomb structure have been developed, but they have problems such as being labor-intensive and expensive to manufacture, and lacking in versatility.
さらに、従来から発泡樹脂を利用したスピーカ
用振動板も開発されてきたが耐溶剤性が悪く、た
とえばエツジとの貼合部やボイスコイルとの貼合
部に有機溶剤を含有した接着剤を使用することが
できず、接着が困難であるといつた欠点があつ
た。また、発泡樹脂の表面は柔かく、曲げ剛性が
弱いため、スピーカ用振動板としては適さないも
のであつた。 Furthermore, speaker diaphragms that use foamed resin have been developed, but they have poor solvent resistance, and for example, adhesives containing organic solvents are used in the bonding areas with edges and voice coils. The drawback was that it was difficult to bond. Furthermore, the surface of the foamed resin is soft and its bending rigidity is low, making it unsuitable for use as a diaphragm for speakers.
また、樹脂フイルムを利用したスピーカ用振動
板は剛性に乏しく、重いといつた欠点があり、実
用性に乏しいといつた欠点があつた。 In addition, speaker diaphragms using resin films have drawbacks such as poor rigidity and weight, and are impractical.
本発明は以上のような従来の欠点を除去するも
のであり、樹脂発泡体を基体としその表面に硬度
の高い樹脂のスキン層を設けて、軽量で曲げ剛性
に優れ、耐溶剤性、耐湿性、耐水性の優れたスピ
ーカ用振動板を提供しようとするものである。 The present invention eliminates the above-mentioned conventional drawbacks, and uses a resin foam as a base and provides a hard resin skin layer on its surface, which is lightweight, has excellent bending rigidity, and is resistant to solvents and moisture. The present invention aims to provide a speaker diaphragm with excellent water resistance.
以下、本発明の実施例を図面第１図により説明
する。 Embodiments of the present invention will be described below with reference to FIG. 1.
１は軽量かつ安価のアクリルブタジエンスチレ
ン（ABS）、ポリスチレン、ウレタン系などの樹
脂発泡体よりなる振動板基体であり、この振動板
基体１の表面には高硬度、耐溶剤性、耐熱性の良
好な非スチレン系のスピラン樹脂またはエポキシ
樹脂などの光硬化樹脂のスキン層２が形成されて
いる。すなわち、基体１はスチレン系の有機溶剤
に侵されるのでスキン層２としては非スチレン系
の光硬化樹脂が用いられるのである。 1 is a diaphragm base made of lightweight and inexpensive resin foam such as acrylic butadiene styrene (ABS), polystyrene, urethane, etc. The surface of this diaphragm base 1 has high hardness, good solvent resistance, and good heat resistance. A skin layer 2 of a photocurable resin such as a non-styrene spiran resin or an epoxy resin is formed. That is, since the substrate 1 is attacked by a styrene-based organic solvent, a non-styrene-based photocurable resin is used as the skin layer 2.
次に従来の平板状のスピーカ用振動板と本発明
の平板状のスピーカ用振動板の曲げ剛性について
の比較を示す。 Next, a comparison will be made regarding the bending rigidity of the conventional flat speaker diaphragm and the flat speaker diaphragm of the present invention.
同じ重量で同形状の平板（10mm×50mm）を作
り、この平板の端部10mmを保持し、長さ40mmの片
持ばりを形成し、この片持ばりの先端に同重量の
荷重を付加して先端が５mm下がつた時の負荷を測
定した。なお、本発明のスピーカ用振動板として
は2.7mmの厚さのウレタン発泡体に10μのスピラン
樹脂層を両面に設けたものを用いた。 Make a flat plate (10 mm x 50 mm) with the same weight and the same shape, hold the 10 mm end of this flat plate to form a cantilever beam with a length of 40 mm, and apply a load of the same weight to the tip of this cantilever beam. The load was measured when the tip was lowered by 5 mm. The speaker diaphragm of the present invention was made of a 2.7 mm thick urethane foam with 10 μm thick spirane resin layers on both sides.
天然パルプシート（0.45mm厚） 1.0
金属箔（アルミニウム）（100μ厚） 0.5
ABS樹脂発泡体（2.7mm厚） 0.8
本発明のスピーカ用振動板 5.0
以上のように本発明のスピーカ用振動板は構成
されるため、スキン層で耐溶剤性、耐熱性に優
れ、硬度も高く、非常に軽量で曲げ剛性にも優
れ、かつ内部損失の高いものでスピーカに利用し
てきわめて有効となり、しかも量産性にも優れる
などの利点をもち、工業的価値の大なるものであ
る。Natural pulp sheet (0.45mm thick) 1.0 Metal foil (aluminum) (100μ thick) 0.5 ABS resin foam (2.7mm thick) 0.8 Speaker diaphragm of the present invention 5.0 The speaker diaphragm of the present invention has the structure as described above. Because of this, the skin layer has excellent solvent resistance and heat resistance, high hardness, is extremely lightweight, has excellent bending rigidity, and has high internal loss, making it extremely effective for use in speakers, and also suitable for mass production. It also has advantages such as superior performance, and is of great industrial value.
第１図は本発明のスピーカ用振動板の実施例を
示す断面斜視図である。
１……振動板基体、２……スキン層。
FIG. 1 is a cross-sectional perspective view showing an embodiment of the speaker diaphragm of the present invention. 1... diaphragm base, 2... skin layer.
Claims (1)
又はウレタンの樹脂発泡体を振動板基体とし、こ
の振動板基体の主表面及び側面に非スチレン系の
スピラン樹脂又はエポキシ系樹脂の光硬化樹脂層
が形成されたスピーカ用振動板。1. A vibrator for a speaker in which a resin foam of acrylic butadiene styrene, polyethylene, or urethane is used as a diaphragm base, and a photocured resin layer of non-styrene spiran resin or epoxy resin is formed on the main surface and side surfaces of the diaphragm base. Board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9791880A JPS5723389A (en) | 1980-07-16 | 1980-07-16 | Diaphragm for loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9791880A JPS5723389A (en) | 1980-07-16 | 1980-07-16 | Diaphragm for loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5723389A JPS5723389A (en) | 1982-02-06 |
| JPS639440B2 true JPS639440B2 (en) | 1988-02-29 |
Family
ID=14205074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9791880A Granted JPS5723389A (en) | 1980-07-16 | 1980-07-16 | Diaphragm for loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5723389A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60158545A (en) * | 1984-01-27 | 1985-08-19 | Mitsubishi Electric Corp | Electrodeless discharge lamp |
| JPS60158544A (en) * | 1984-01-27 | 1985-08-19 | Mitsubishi Electric Corp | Electrodeless discharge lamp |
| JPH0232295U (en) * | 1988-08-24 | 1990-02-28 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476134A (en) * | 1977-11-29 | 1979-06-18 | Mitsubishi Electric Corp | Manufacture of speaker diaphragm |
-
1980
- 1980-07-16 JP JP9791880A patent/JPS5723389A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476134A (en) * | 1977-11-29 | 1979-06-18 | Mitsubishi Electric Corp | Manufacture of speaker diaphragm |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5723389A (en) | 1982-02-06 |
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