JP2900417B2 - Speaker diaphragm - Google Patents
Speaker diaphragmInfo
- Publication number
- JP2900417B2 JP2900417B2 JP22069189A JP22069189A JP2900417B2 JP 2900417 B2 JP2900417 B2 JP 2900417B2 JP 22069189 A JP22069189 A JP 22069189A JP 22069189 A JP22069189 A JP 22069189A JP 2900417 B2 JP2900417 B2 JP 2900417B2
- Authority
- JP
- Japan
- Prior art keywords
- speaker diaphragm
- present
- diaphragm
- resistance
- edge
- 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 - Fee Related
Links
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用振動板
に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker diaphragm used in various audio equipment.
従来の技術 従来のスピーカ用振動板のエッジ基板には、SBR・NBR
等の樹脂をコーティングした木綿やポリアミドの織布、
また発泡ウレタンシート等が用いられていた。Conventional technology SBR / NBR is used on the edge substrate of a conventional speaker diaphragm.
Woven fabric of cotton or polyamide coated with resin such as
Further, a foamed urethane sheet or the like has been used.
発明が解決しようとする課題 木綿100％の織布は、耐熱，耐湿等に弱く、またポリ
アミド材は剛性があり耐環境特性も良好であるが、基材
とコーティング樹脂との密着性が悪く、特に大振幅時に
エッジ材と振動板が剥がれるといった接着性の悪さがあ
った。また、発泡ウレタンシートは振幅特性に強く低音
域の音質が良好であることから広く使用されているが、
耐候性に弱く、さらに通気性が高いため水分を通しやす
く耐水性に弱いといった課題があった。Problems to be Solved by the Invention 100% cotton woven fabric is weak in heat resistance, moisture resistance, etc., and polyamide material has rigidity and good environmental resistance, but poor adhesion between the base material and the coating resin. In particular, there was poor adhesion such that the edge material and the diaphragm were peeled off at a large amplitude. Urethane foam sheets are widely used because they have strong amplitude characteristics and good sound quality in the low frequency range.
There is a problem in that it is weak in weather resistance and has high air permeability, so that it easily passes moisture and is poor in water resistance.
本発明は以上のような従来の欠点を除去し、耐熱，耐
候，耐油性に優れ、防水性に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。An object of the present invention is to provide a speaker diaphragm excellent in heat resistance, weather resistance, oil resistance and water resistance by eliminating the above-mentioned conventional disadvantages.
課題を解決するための手段 上記の課題を解決するために本発明は、ポリエステル
系又はポリエーテル系の軟質ポリウレタンフォームの表
面にアクリル樹脂の被膜を形成したエッジ材を所定の形
状に加熱成形したものを振動板本部に結合して構成した
ものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention is to heat-mold an edge material in which an acrylic resin film is formed on the surface of a polyester-based or polyether-based flexible polyurethane foam into a predetermined shape. Are connected to the diaphragm main part.
作用 上記構成とすることにより、エッジ材の表面を樹脂被
膜で保護しているため耐候性が大幅に向上する。また、
表面被膜により通気遮断効果があり、水分を通さず、耐
水，耐湿効果が向上する。Operation With the above configuration, the surface of the edge material is protected by the resin film, so that the weather resistance is significantly improved. Also,
The surface coating has a ventilation blocking effect, does not allow moisture to pass through, and improves water and moisture resistance.
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.
第１図において、１はパルプ繊維などを抄紙して構成
されるコーン状の振動板本体で２はこの振動板本体１の
外周部に結合されたエッジ材である。In FIG. 1, reference numeral 1 denotes a cone-shaped diaphragm main body made of paper made of pulp fiber or the like, and 2 denotes an edge member joined to an outer peripheral portion of the diaphragm main body 1.
第２図に本発明に使用されるエッジ基材を示す。３は
密度約35kg/m3のポリエーテルウレタンフォームを8mmの
厚さにスライスしたものであり、片側表面にホットメル
ト状に100μの厚さのアクリル樹脂４を、ウレタンフォ
ーム３の表面を溶かして密着一体化したものである。FIG. 2 shows an edge substrate used in the present invention. 3 is obtained by slicing a polyether urethane foam having a density of about 35 kg / m 3 to a thickness of 8 mm, and dissolving the surface of the urethane foam 3 with an acrylic resin 4 having a thickness of 100 μm on one surface in a hot melt state It is closely integrated.
本発明に使用されるエッジ基材の環境試験結果を第３
図〜第５図に示す。第３図はウエザーメーターを用いて
の耐候性試験結果である。従来のウレタンフォームが時
間とともに材厚が薄くなるのに対し、本発明品は経時変
化による材厚の変化はない。第４図は100℃における耐
熱性試験結果である。経時変化による引っ張り強度の劣
化はあまりない。第５図は耐油性試験結果である。The environmental test results of the edge base material used in the present invention
This is shown in FIGS. FIG. 3 shows the results of a weather resistance test using a weather meter. While the thickness of the conventional urethane foam decreases with time, the thickness of the product of the present invention does not change with time. FIG. 4 shows the results of a heat resistance test at 100 ° C. There is not much deterioration in tensile strength due to aging. FIG. 5 shows the results of the oil resistance test.
オイルは、JIS3号オイルを用いたこの試験においても
経時変化による引っ張り強度の劣化はほとんどない。As for the oil, even in this test using JIS No. 3 oil, there is almost no deterioration in tensile strength due to aging.
またJIS−Ｌ−1004フラジール形試験機を用いて通気
度を測定した結果 以上のように本発明品はほとんど通気性がない。In addition, the result of measuring the air permeability using a JIS-L-1004 Frazier type testing machine As described above, the product of the present invention has almost no air permeability.
このエッジ基材を金型温度200℃，プレス時間20secの
条件で成形し第１図に示すエッジ材２を構成し、振動板
本体１と貼り合わせてスピーカ用振動板を得た。This edge base material was molded under the conditions of a mold temperature of 200 ° C. and a press time of 20 sec to form an edge material 2 shown in FIG. 1, and bonded to the diaphragm main body 1 to obtain a speaker diaphragm.
発明の効果 以上のように本発明のスピーカ用振動板は構成される
ため耐候性，耐熱性，耐油性などに優れ、また通気度が
ほとんどないため防水効果もあり、さらにエッジ表面の
樹脂層の材質により光沢や色彩の自由度が広がり、外観
品位も高くなる。一方では接着材を使わずにウレタンフ
ォームと樹脂被膜層を一体化させるため、大振幅時の歪
みも少なく工業適価値の大なるものである。Effect of the Invention As described above, the speaker diaphragm of the present invention is configured to have excellent weather resistance, heat resistance, oil resistance, and the like, and has almost no air permeability, and therefore has a waterproof effect. Depending on the material, the degree of freedom of gloss and color is increased, and the appearance quality is also enhanced. On the other hand, since the urethane foam and the resin coating layer are integrated without using an adhesive, the distortion at the time of large amplitude is small and the industrial value is great.
第１図は本発明のスピーカ用振動板の一実施例を示す断
面図、第２図は本発明に用いるエッジ基材の構造を示す
断面図、第３図〜第５図は本発明のスピーカ用振動板に
用いるエッジ基材のそれぞれ、耐候性，耐熱性，耐油性
試験結果を示す特性図である。 １……振動板本体、２……エッジ材、３……ウレタンフ
ォーム、４……樹脂被膜層。FIG. 1 is a sectional view showing an embodiment of the speaker diaphragm of the present invention, FIG. 2 is a sectional view showing the structure of an edge base material used in the present invention, and FIGS. 3 to 5 are speakers of the present invention. FIG. 7 is a characteristic diagram showing weather resistance, heat resistance, and oil resistance test results of the edge base material used for the diaphragm for use in the present invention. 1 ... diaphragm main body, 2 ... edge material, 3 ... urethane foam, 4 ... resin coating layer.
Claims (1)
ウレタンフォームの表面にホットメルト状で厚み略100
μのアクリル樹脂を密着一体化して被膜層を形成し、加
熱プレス加工したエッジ材を振動板本体の外周部に結合
したスピーカ用振動板。1. A hot-melt polyester- or polyether-based urethane foam having a thickness of about 100
A speaker diaphragm in which a coating layer is formed by tightly integrating an acrylic resin with a thickness of μ, and a hot-pressed edge material is connected to the outer periphery of the diaphragm main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22069189A JP2900417B2 (en) | 1989-08-28 | 1989-08-28 | Speaker diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22069189A JP2900417B2 (en) | 1989-08-28 | 1989-08-28 | Speaker diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0383495A JPH0383495A (en) | 1991-04-09 |
| JP2900417B2 true JP2900417B2 (en) | 1999-06-02 |
Family
ID=16754975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22069189A Expired - Fee Related JP2900417B2 (en) | 1989-08-28 | 1989-08-28 | Speaker diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2900417B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210409869A1 (en) * | 2018-10-11 | 2021-12-30 | Sony Corporation | Speaker edge, diaphragm unit, and method of manufacturing speaker edge |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05115093A (en) * | 1991-10-22 | 1993-05-07 | Onkyo Corp | Speaker edge |
| CN114143635A (en) * | 2021-11-26 | 2022-03-04 | 歌尔科技有限公司 | Loudspeaker module and outdoor fixed audio equipment |
-
1989
- 1989-08-28 JP JP22069189A patent/JP2900417B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210409869A1 (en) * | 2018-10-11 | 2021-12-30 | Sony Corporation | Speaker edge, diaphragm unit, and method of manufacturing speaker edge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0383495A (en) | 1991-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |