JPS5825000B2 - speaker - Google Patents
speakerInfo
- Publication number
- JPS5825000B2 JPS5825000B2 JP11699575A JP11699575A JPS5825000B2 JP S5825000 B2 JPS5825000 B2 JP S5825000B2 JP 11699575 A JP11699575 A JP 11699575A JP 11699575 A JP11699575 A JP 11699575A JP S5825000 B2 JPS5825000 B2 JP S5825000B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- speaker
- present
- asbestos
- rock wool
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】
本発明は耐熱性に優れ、剛性の高い軽量な振動板を用い
たスピーカに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker using a lightweight diaphragm with excellent heat resistance and high rigidity.
最近、各種の電気機器においては、火災事故を発生する
のを阻止するために難燃化対策を施すことが義務づけら
れてきている。BACKGROUND ART Recently, it has become mandatory to take measures to make various electrical devices flame retardant in order to prevent fire accidents from occurring.
これは、スピーカを備えた音響機器においても同様であ
り、キャビネットの難燃化とともに、スピーカ自体の難
燃化も計らなければならなくなってきている。This also applies to audio equipment equipped with speakers, and in addition to making the cabinet flame retardant, it is also becoming necessary to make the speakers themselves flame retardant.
しかしながら、このような振動板は、きわめて重く、そ
の音圧−周波数特性は第２図のａで示すように低いもの
となっていた。However, such a diaphragm is extremely heavy, and its sound pressure-frequency characteristics are low as shown by a in FIG. 2.
すなわち、このような振動板を用いたスピーカは能率の
悪いものとなっていた。In other words, a speaker using such a diaphragm has poor efficiency.
本発明は以上のような従来の欠点を除去するものである
。The present invention eliminates the drawbacks of the prior art as described above.
以下本発明を一実施例の図面第１図により説明する。The present invention will be explained below with reference to FIG. 1, which shows one embodiment.
１は界磁部であり、この界磁部１は外磁型と称され、セ
ンターポール２をもったプレート３と、リング状のマグ
ネット４、同じくリング状の上部プレート５によって構
成されている。Reference numeral 1 denotes a field section. This field section 1 is called an external magnet type, and is composed of a plate 3 having a center pole 2, a ring-shaped magnet 4, and an upper plate 5, which is also ring-shaped.
なお、他の例としてヨーク内に柱状マグネット、ポール
ピースを組込んだ内磁型の界磁部を用いてもよい。In addition, as another example, an internal magnet type field section in which a columnar magnet or a pole piece is incorporated in the yoke may be used.
この界磁部１にはフレーム６が結合され、このフレーム
６の周縁部にはガスケット７とともに振動板８が取付け
られ、この振動板８の中央部下面には、ボイスコイル９
が結合され、Ｃのボイスコイル９の中間部はダンパー１
０で支持され、界磁部１の磁気ギャップ１１に正しくは
まりＣんでいる。A frame 6 is coupled to the field section 1, a diaphragm 8 is attached to the peripheral edge of the frame 6 together with a gasket 7, and a voice coil 9 is attached to the lower surface of the center of the diaphragm 8.
are coupled, and the middle part of the voice coil 9 of C is connected to the damper 1.
0, and is correctly fitted into the magnetic gap 11 of the field section 1.
また、振動板８の中央部の上面にはダストキャップ１２
が貼付けられている。Further, a dust cap 12 is provided on the upper surface of the central portion of the diaphragm 8.
is pasted.
そして、上記振動板８は、ロックウール、石綿セラミッ
クファイバーなどの無機系耐熱性繊維を用い、これに耐
熱に優れたフェノールなどの熱硬化性樹脂粉末を結合剤
とし、耐熱性結合力を増すために難燃効果の優れたネオ
プレン系ラテックスを添加し、これをビータ内で処理し
て繊維に樹脂粉末を定着させ、これを抄紙成形して得た
ものである。The diaphragm 8 uses inorganic heat-resistant fibers such as rock wool and asbestos ceramic fibers, and uses thermosetting resin powder such as phenol, which has excellent heat resistance, as a binder to increase heat-resistant bonding strength. Neoprene latex, which has excellent flame retardant properties, is added to the fibers, and this is treated in a beater to fix the resin powder to the fibers, which is then molded into paper.
これで耐熱性に優れ、軽量で剛性の高い振動板８とする
ことができる。This allows the diaphragm 8 to be excellent in heat resistance, lightweight, and highly rigid.
振動板８の具体的な材料としては、石綿６０〜８０ｗｔ
％、 ロックウール５〜１０ｗｔ％、フェノール系粉末
５〜１０ｗｔ％および上記石綿、ロックウールおよびフ
ェノール系粉末の総重量に対して２〜３％のネオプレン
系ラテックス等のゴム系樹脂から構成されるのが適当で
ある。The specific material for the diaphragm 8 is asbestos 60 to 80wt.
%, 5 to 10 wt% of rock wool, 5 to 10 wt% of phenolic powder, and 2 to 3% of a rubber resin such as neoprene latex based on the total weight of the asbestos, rock wool, and phenolic powder. is appropriate.
そして振動板８は石綿とロックウールとをビータ内にて
攪拌し、フェノール粉末を添加し、その後ネオプレン系
ラテックスを添加して抄造、成形加熱を行うことによっ
て製造される。The diaphragm 8 is manufactured by stirring asbestos and rock wool in a beater, adding phenol powder, then adding neoprene latex, and performing paper forming and heating.
次に本発明の振動板と従来のパルプ繊維を主体とした振
動板との種々の性能について比較した例を示す。Next, an example will be shown in which various performances are compared between the diaphragm of the present invention and a conventional diaphragm mainly made of pulp fibers.
なお本発明のスピーカに用いる振動板の一例としては、
石綿７０ｗｔ％、ロックウール２３ｗｔ％、フェノール
粉末７ｗｔ％およびそれらにｐＨ＝８〜９のゾル状ネオ
プレン系ラテックスを上記全重量の２．５％添加し、硫
酸アルミニウムを添加して中性あるいは微酸性にするこ
とによってネオプレン系ラテックスをゲル化して製造し
たものを用いる。Note that an example of the diaphragm used in the speaker of the present invention is as follows:
70 wt% asbestos, 23 wt% rock wool, 7 wt% phenol powder, and 2.5% of the above total weight of sol-like neoprene latex with pH = 8 to 9 were added, and aluminum sulfate was added to make it neutral or slightly acidic. A product manufactured by gelatinizing neoprene latex is used.
耐熱性 ２００°Ｇ２分間放置 従来振動板 完全炭化機能不可 本発明振動板 変化なし 本発明振動板 ２５０℃３０分間放置 変色しているが振動板として の機能は充分に発揮する。Heat-resistant Leave at 200°G for 2 minutes Conventional diaphragm Complete carbonization function not possible Invention diaphragm No change Invention diaphragm left at 250°C for 30 minutes Although it is discolored, it can be used as a diaphragm. function is fully demonstrated.
本発明振動板 ３００℃３０分間放置 結合剤による炭化は進んでい るが振動板としての機能は発 揮する。Invention diaphragm left at 300°C for 30 minutes Carbonization due to the binder is progressing. However, it does not function as a diaphragm. demonstrate.
剛性
ヤング率 比弾性率−）
従来の振動板 １．２Ｘ１０１０２゜５Ｘ１０７本発
明の振動板 ２．０Ｘ１０１０３．２Ｘ１０７このよう
に本発明の振動板８は耐熱性でも、剛性でも一般的な抄
紙振動板より優れたものとなり軽さの点でも有利となり
、その音圧−周波数特性は第２図のｂで示すようになり
、能率の高いものとすることができる。Young's modulus of rigidity Specific modulus of elasticity -) Conventional diaphragm 1.2X10102゜5X107 Diaphragm of the present invention 2.0X10103.2X107 Thus, the diaphragm 8 of the present invention has better heat resistance and rigidity than a general papermaking diaphragm. It is also advantageous in terms of lightness, and its sound pressure-frequency characteristics are as shown by b in FIG. 2, making it highly efficient.
以上のように本発明のスピーカは振動板として耐熱性に
優れたものを用いているため、難燃化を計ることもでき
、しかも軽量で剛性に富むため、能率のよいものとでき
、工業的価値の犬なるものである。As mentioned above, since the speaker of the present invention uses a material with excellent heat resistance as a diaphragm, it can be made flame retardant, and it is also lightweight and rigid, making it highly efficient and suitable for industrial use. It is a dog of value.
第１図は本発明のスピーカの一実施例を示す半断面図、
第２図は従来のスピーカと本発明のスピーカの音圧−周
波数特性図である。
１・・・・・・界磁部、８・・・・・・振動板、９・・
・・・・ボイスコイル、１１・・・・・・磁気ギャップ
。FIG. 1 is a half-sectional view showing an embodiment of the speaker of the present invention;
FIG. 2 is a sound pressure-frequency characteristic diagram of a conventional speaker and a speaker of the present invention. 1... Field part, 8... Vibration plate, 9...
...Voice coil, 11...Magnetic gap.
Claims (1)
、ロックウール、石綿、セラミックファイバーなどの無
機系耐熱性繊維にフェノール系樹脂粉末をネオプレン系
ラテックスで定着させたものを抄造成形した振動板を結
合したことを特徴とするスピーカ。1 A diaphragm made by paper-forming of inorganic heat-resistant fibers such as rock wool, asbestos, and ceramic fibers with phenolic resin powder fixed in neoprene latex is connected to the voice coil that fits into the magnetic gap in the field section. A speaker that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11699575A JPS5825000B2 (en) | 1975-09-26 | 1975-09-26 | speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11699575A JPS5825000B2 (en) | 1975-09-26 | 1975-09-26 | speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5240326A JPS5240326A (en) | 1977-03-29 |
| JPS5825000B2 true JPS5825000B2 (en) | 1983-05-24 |
Family
ID=14700857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11699575A Expired JPS5825000B2 (en) | 1975-09-26 | 1975-09-26 | speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825000B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60122783A (en) * | 1983-12-02 | 1985-07-01 | 工業技術院長 | Manufacture of ceramics |
| JPS60151290A (en) * | 1984-01-19 | 1985-08-09 | トヨタ自動車株式会社 | Surface treatment for non-oxide ceramic structure |
| JPS62197356A (en) * | 1986-02-25 | 1987-09-01 | 日本碍子株式会社 | Manufacture of silicon nitride sintered body |
| JPS632870A (en) * | 1986-06-24 | 1988-01-07 | 運輸省 船舶技術研究所長 | Mechanical strength enhancement by chemical treatment of ceramic surface |
-
1975
- 1975-09-26 JP JP11699575A patent/JPS5825000B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5240326A (en) | 1977-03-29 |
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