JPH0322795A - Manufacture of horn type loudspeaker - Google Patents
Manufacture of horn type loudspeakerInfo
- Publication number
- JPH0322795A JPH0322795A JP15725289A JP15725289A JPH0322795A JP H0322795 A JPH0322795 A JP H0322795A JP 15725289 A JP15725289 A JP 15725289A JP 15725289 A JP15725289 A JP 15725289A JP H0322795 A JPH0322795 A JP H0322795A
- Authority
- JP
- Japan
- Prior art keywords
- horn
- mold
- rubber material
- vibration
- foaming
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 38
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000011162 core material Substances 0.000 abstract description 10
- 238000005187 foaming Methods 0.000 abstract description 8
- 229920002635 polyurethane Polymers 0.000 abstract description 7
- 239000004814 polyurethane Substances 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はホーン型スピーカの製造方法に係り、特に防振
材を一体或形した低発泡ポリウレタン方式のホーン型ス
ピーカの製造方法に関する．く従来の技術〉
第２図は従来のホーン型スピーカの外観斜視図、第３図
は第２図の断面図である．４はドライバー５はホーン、
６は振動板、７はデッドニング材、８はイコライザーを
示している．ドライバー４の前方に振動１ｉ６が設けら
れ、振動板６にかかる放射インピーダンスを前面に取付
けたホーン５により増大させ、能率を上げる構造がホー
ン型スピーカの基本的設計思想であって、そのためには
ホーン５の持つべき特性として、音圧が上がった時、共
振音が発生するのを防止するするために、適当な剛性と
、振動を防ぐため内部損失を充分大きくすることが要請
されている。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method of manufacturing a horn-type speaker, and more particularly to a method of manufacturing a horn-type speaker using a low-foaming polyurethane method in which a vibration isolating material is integrally formed. Prior Art> Fig. 2 is an external perspective view of a conventional horn-type speaker, and Fig. 3 is a sectional view of Fig. 2. 4 is the driver 5 is the horn,
6 is a diaphragm, 7 is a deadening material, and 8 is an equalizer. The basic design concept of a horn-type speaker is a structure in which vibration 1i6 is provided in front of the driver 4, and the radiation impedance applied to the diaphragm 6 is increased by the horn 5 attached to the front, increasing efficiency. 5 is required to have appropriate rigidity to prevent resonance sound from occurring when the sound pressure increases, and to have a sufficiently large internal loss to prevent vibration.
く発明が解決しようとする課題〉
そのために、ホーン５の材料としては、鋳鉄、アルξ削
り出し、木材の削り出しもしくは張り合わせ材料等の比
較的高価な材料が使用され、さらに防振材としてホーン
５の外周にピッチあるいはゴム系のデッドニング材７を
塗布する必要があった．特に波長の長い中音域のホーン
型スピーカにおいては、ホーンが大型化する故に、上記
デッドニング材の塗布作業のため、非常にコストが掛か
るので、このデッドニング材は高級スピーカにのみ採用
されていた．
本発明は上記事情に鑑みて創案されたもので、本体が低
発泡ポリウレタンであり、共振しにくくまた密着したキ
ャビテイを兼ねたゴム材で振動を防ぐことができ、加工
工程が少なく、低価格のホーン型スピーカを提供するこ
とを目的としている。Problems to be Solved by the Invention> To this end, relatively expensive materials such as cast iron, machined aluminum, machined wood, or laminated materials are used as the material for the horn 5, and the horn is used as a vibration-proofing material. It was necessary to apply pitch or rubber-based deadening material 7 to the outer circumference of 5. Particularly in the case of horn-type speakers in the mid-range with long wavelengths, the horn becomes large and the application of the deadening material described above is very costly, so this deadening material was only used in high-end speakers. The present invention was devised in view of the above circumstances.The main body is made of low-foam polyurethane, which makes it difficult to resonate, and the rubber material that also serves as a tightly fitted cavity can prevent vibrations, requires fewer processing steps, and is inexpensive. The purpose is to provide a horn type speaker.
〈課題を解決するための手段〉
本発明に係るホーン型スピーカの製造方法は、内側に略
Ω状の凹凸を多数個形成しホーンの形状に合わせて予め
作成したゴム材を割り型の内側に装着しておき、その後
発泡材を加えたポリウレタン樹脂を金型内に注入・硬化
させることにより、前記ゴム材をポリウレタン樹脂の内
部に一体に張り合わせるようにしたことを特徴としてい
る．く作用〉
予めマスター型で戒形したゴム材を割り型に装着し、コ
ア材を固定する．コア材の固定後、発泡材を加えたポリ
ウレタン樹脂を金型内部に注入し、樹脂の硬化後、前記
ゴム材を張り合わせた状態にして発泡ポリウレタンを金
型から取り外す．これにより低発泡のポリウレタン樹脂
及びゴム材が一体或形されたホーンができる。<Means for Solving the Problems> A method for manufacturing a horn-type speaker according to the present invention includes forming a large number of roughly Ω-shaped unevenness on the inside, and applying a rubber material prepared in advance to match the shape of the horn to the inside of a split mold. It is characterized in that the rubber material is integrally pasted inside the polyurethane resin by injecting the polyurethane resin to which a foaming material has been added into the mold and curing it after the mold is attached. Action〉 Rubber material pre-shaped with a master mold is attached to the split mold, and the core material is fixed. After fixing the core material, polyurethane resin with foamed material is injected into the mold, and after the resin hardens, the rubber material is attached and the foamed polyurethane is removed from the mold. As a result, a horn made of low-foaming polyurethane resin and rubber material is produced.
〈実施例〉
以下、図面を参照して本考案に係る一実施例を説明する
．第１図は本発明を用いたホーン型スピーカの概略断面
図、第４図は本発明に使用する金型の構造断面図、第５
図は防振ゴムの部分的断面図をそれぞれ示している．
第４図において、９は割り型、ｌＯは防振材としてのゴ
ム材（キャビティ）、１１は発泡ポリウレタンあるいは
樹脂等からなるコア材を示している。<Example> An example of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional view of a horn-type speaker using the present invention, FIG. 4 is a structural cross-sectional view of a mold used in the present invention, and FIG.
Each figure shows a partial cross-section of the anti-vibration rubber. In FIG. 4, numeral 9 indicates a split mold, IO indicates a rubber material (cavity) as a vibration isolating material, and 11 indicates a core material made of polyurethane foam, resin, or the like.
すなわち、割り型９はホーンの形状に沿って作成してお
き、コア材１１との間でホーンを作る。この場合、ゴム
材ｌＯは第５図に図示するように、表面に微小凸起を設
けたマスター型でもって予め内面に略Ω状の凹凸１０１
を全面にわたって形成し、これをマスター型より無理抜
きしておく。そしてこの戒形済のゴム材１０を割り型９
の内側に装着固定しておく．その後、型内に発泡材を加
えたポリウレタン樹脂を注入する。That is, the split mold 9 is created in accordance with the shape of the horn, and the horn is formed between it and the core material 11. In this case, as shown in FIG. 5, the rubber material IO is prepared with a master mold having minute protrusions on its surface, and is prepared with approximately Ω-shaped protrusions 101 on its inner surface.
Form it over the entire surface and forcefully punch it out from the master mold. Then, split the molded rubber material 10 into a mold 9.
Attach and fix it inside the. Then, polyurethane resin with foam added is injected into the mold.
ポリウレタン樹脂が硬化した後、コア材１２、割り型９
を外して、戒形を完了する．この際に、ゴム材ｌＯに戒
形された前記凹凸１０１により、ポリウレタン本体にゴ
ム材ｌＯを密着させる．
く発明の効果〉
本発明のホーン型スピーカの製造方法は、予めマスター
型で或形したゴム材を割り型に装着し、コア材を固定す
る．コア材の固定後、発泡材を加えたポリウレタン樹脂
を金型内部に注入し、樹脂の硬化後、前記ゴム材を張り
合わせた状態にして発泡ポリウレタンを金型から取り外
す方法であるから、本体が低発泡ポリウレタンであり、
共振しにくくまた密着したキャビティを兼ねたゴム材で
振動を防ぐことができ、加工工程が少なく、低価格のホ
ーン型スピーカを得ることができる．なお上記のように
してスピーカを製造するものであるから、従来の技術で
必要としていたデッドニング材の塗布作業は不要である
．After the polyurethane resin has hardened, the core material 12 and the split mold 9
Remove and complete the precept. At this time, the rubber material IO is brought into close contact with the polyurethane body by the unevenness 101 formed in the rubber material IO. Effects of the Invention> In the method for manufacturing a horn-type speaker of the present invention, a rubber material pre-shaped with a master mold is attached to a split mold, and a core material is fixed. After fixing the core material, polyurethane resin with foamed material is injected into the mold, and after the resin hardens, the foamed polyurethane is removed from the mold with the rubber material attached, so the main body is low. It is polyurethane foam,
Vibration can be prevented by using a rubber material that does not easily resonate and also serves as a tight cavity, and it is possible to obtain a low-cost horn-shaped speaker with fewer processing steps. Furthermore, since the speaker is manufactured in the manner described above, there is no need for the application of a deadening material, which was required in the conventional technology.
第１図は本発明を用いたホーン型スピーカの概略断面図
、第２図は従来のホーン型スピーカの外観斜視図、第３
図は第２図の断面図である。第４図は本発明に使用する
金型の構造断面図、第５図は防振ゴムの部分的断面図で
ある。
９・・・割り型
１０・・・ゴム材
１０１ ・・・凹凸
１ｌ・・・ホーン本体
ｌ２・・・コア材FIG. 1 is a schematic sectional view of a horn-type speaker using the present invention, FIG. 2 is an external perspective view of a conventional horn-type speaker, and FIG.
The figure is a sectional view of FIG. 2. FIG. 4 is a structural sectional view of a mold used in the present invention, and FIG. 5 is a partial sectional view of a vibration-proof rubber. 9...Split mold 10...Rubber material 101...Irregularities 1l...Horn body l2...Core material
Claims (1)
ーンの形状に合わせて予め作成したゴム材を割り型の内
側に装着しておき、その後発泡材を加えたポリウレタン
樹脂を金型内に注入・硬化させることにより、前記ゴム
材をポリウレタン樹脂の内部に一体に張り合わせるよう
にしたことを特徴とするホーン型スピーカの製造方法。(1) A large number of approximately Ω-shaped irregularities are formed on the inside, and a rubber material made in advance to match the shape of the horn is attached to the inside of the split mold, and then polyurethane resin with foamed material is added inside the mold. 1. A method for manufacturing a horn-type speaker, characterized in that the rubber material is integrally laminated inside a polyurethane resin by injecting and curing the rubber material into a polyurethane resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15725289A JPH0322795A (en) | 1989-06-20 | 1989-06-20 | Manufacture of horn type loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15725289A JPH0322795A (en) | 1989-06-20 | 1989-06-20 | Manufacture of horn type loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0322795A true JPH0322795A (en) | 1991-01-31 |
Family
ID=15645584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15725289A Pending JPH0322795A (en) | 1989-06-20 | 1989-06-20 | Manufacture of horn type loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0322795A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6394223B1 (en) * | 1999-03-12 | 2002-05-28 | Clair Brothers Audio Enterprises, Inc. | Loudspeaker with differential energy distribution in vertical and horizontal planes |
| US7606383B2 (en) | 2005-10-05 | 2009-10-20 | Qsc Audio Products, Inc. | Curved line array loudspeaker |
| US7606384B2 (en) | 2005-10-05 | 2009-10-20 | Qsc Audio Products, Inc. | Spiral line array loudspeaker |
| US7628274B2 (en) | 2004-12-28 | 2009-12-08 | Prairie Dog Co., Ltd. | Cake-shaped decorative accessory made of a towel in a cup |
| US7698875B2 (en) | 2004-12-28 | 2010-04-20 | Prairie Dog Co., Ltd. | Method of manufacturing a cake-shaped decorative accessory made of a towel |
-
1989
- 1989-06-20 JP JP15725289A patent/JPH0322795A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6394223B1 (en) * | 1999-03-12 | 2002-05-28 | Clair Brothers Audio Enterprises, Inc. | Loudspeaker with differential energy distribution in vertical and horizontal planes |
| US7628274B2 (en) | 2004-12-28 | 2009-12-08 | Prairie Dog Co., Ltd. | Cake-shaped decorative accessory made of a towel in a cup |
| US7698875B2 (en) | 2004-12-28 | 2010-04-20 | Prairie Dog Co., Ltd. | Method of manufacturing a cake-shaped decorative accessory made of a towel |
| US7606383B2 (en) | 2005-10-05 | 2009-10-20 | Qsc Audio Products, Inc. | Curved line array loudspeaker |
| US7606384B2 (en) | 2005-10-05 | 2009-10-20 | Qsc Audio Products, Inc. | Spiral line array loudspeaker |
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