JPS6211558B2 - - Google Patents
Info
- Publication number
- JPS6211558B2 JPS6211558B2 JP53100004A JP10000478A JPS6211558B2 JP S6211558 B2 JPS6211558 B2 JP S6211558B2 JP 53100004 A JP53100004 A JP 53100004A JP 10000478 A JP10000478 A JP 10000478A JP S6211558 B2 JPS6211558 B2 JP S6211558B2
- Authority
- JP
- Japan
- Prior art keywords
- vibrating body
- cylindrical portion
- covering
- vibrating
- voice coil
- 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
- 239000000463 material Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】
本発明は、略円錐体形状に成形された発泡樹脂
から成る振動体本体を備えたスピーカ用振動体に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibrating body for a speaker including a vibrating body body made of foamed resin and formed into a substantially conical shape.
この種のスピーカ用振動体は、一般的な紙等を
コーン形状に成形して成る振動体本体と同質量の
略円錐体形状に発泡スチロール等の発泡樹脂材を
成形して振動体本体として用いることにより、振
動体本体における分割振動の発生を防止して音響
特性の向上を図り得るようにしたものとして従来
より知られている。この種振動体の従来例につい
て、その概略的構造を第１図の縦断側面図に示
す。第１図において、発泡スチロール等の発泡樹
脂材を断面台形状の略円錐体形状に成形して成る
振動体本体１は、その周部１ａがエツジ部２を介
して図示しないスピーカ本体のフレームに支持さ
れるとともに、その頂部１ｂにボイスコイルボビ
ン３が接着固定されている。なお、上記ボイスコ
イルボビン３に巻装されているボイスコイル４
は、スピーカ本体の磁気回路５中の磁気ギヤツプ
５ａ内に占位される。 This type of speaker vibrating body is made by molding a foamed resin material such as styrene foam into a substantially conical shape with the same mass as the vibrating body body, which is made by molding general paper or the like into a cone shape. This is conventionally known as a device that can prevent split vibration from occurring in the vibrating body body and improve acoustic characteristics. The schematic structure of a conventional example of this type of vibrating body is shown in the longitudinal cross-sectional side view of FIG. In FIG. 1, a vibrating body main body 1 made of a foamed resin material such as expanded polystyrene molded into a substantially conical shape with a trapezoidal cross section has a peripheral portion 1a supported by a frame of a speaker main body (not shown) via an edge portion 2. At the same time, a voice coil bobbin 3 is adhesively fixed to the top portion 1b. Note that the voice coil 4 wound around the voice coil bobbin 3
is located within the magnetic gap 5a in the magnetic circuit 5 of the speaker body.
ところで、上述の如き構造の振動体において
は、コーン形状の振動体本体を備えたものに比較
して、分割振動が発生しにくいという利点を有す
る反面、次のような欠点がある。すなわち、振動
体本体１を形成している発泡樹脂体の振動伝播速
度が一般的に小さく該振動体本体１の固有共振周
波数が低いために、音響出力周波数特性上に、上
記振動体本体１の固有共振周波数によるピーク・
デイツプが現われてしまい、特に高域領の特性が
劣化する。また、振動体本体１は、断面台形状の
略円錐体形状を有し、その頂部１ｂに駆動力が与
えられるので、上記頂部１ｂから音響出力面１ｃ
の中央部分および周縁部までの距離L1，L2が異
なることによつて、音響出力の位相特性に劣化を
生ずる。さらに、ボイスコイルボビン３は、発泡
樹脂材から成る振動体本体１の頂部１ｂに直接に
接着固定されており、その接着固定状態を精度良
く且つ強固にするのが困難であり、上記接着固定
状態のバラツキによつて音響出力周波数特性の高
音領域に悪影響を及ぼす。さらにまた、一般的に
発泡樹脂材は耐熱性が悪いために大出力のスピー
カ用振動体に用いるのが困難である。 Incidentally, the vibrating body having the above-described structure has the advantage that split vibration is less likely to occur compared to a vibrating body having a cone-shaped vibrating body body, but has the following drawbacks. That is, since the vibration propagation velocity of the foamed resin body forming the vibrating body body 1 is generally small and the natural resonance frequency of the vibrating body body 1 is low, the acoustic output frequency characteristics are affected by the vibration propagation velocity of the vibrating body body 1. Peak due to natural resonant frequency
A dip appears, and the characteristics, especially in the high frequency range, deteriorate. Further, the vibrating body main body 1 has a substantially conical shape with a trapezoidal cross section, and the driving force is applied to the top portion 1b, so that the sound output surface 1c is applied from the top portion 1b.
The difference in the distances L 1 and L 2 from the central portion to the peripheral portion causes deterioration in the phase characteristics of the acoustic output. Furthermore, the voice coil bobbin 3 is directly adhesively fixed to the top part 1b of the vibrating body body 1 made of a foamed resin material, and it is difficult to maintain the adhesively fixed state accurately and firmly. The variation adversely affects the high-frequency range of the acoustic output frequency characteristics. Furthermore, foamed resin materials generally have poor heat resistance, making it difficult to use them in vibrating bodies for high-output speakers.
そこで、本発明は、上述の如き従来例における
欠点に鑑み、ボイスコイルボビンとの結合状態を
高精度で且つ強化するとともに、音響出力周波数
特性の高音域におけるピーク・デツプを減少さ
せ、かつ、耐熱性の向上を図つて大出力のスピー
カにも使用し得るような新規なスピーカ用振動体
を提供しようとするものである。 In view of the above-mentioned drawbacks of the conventional example, the present invention aims to strengthen the coupling state with the voice coil bobbin with high precision, reduce the peak and depth in the high range of the acoustic output frequency characteristics, and improve heat resistance. The object of the present invention is to provide a novel speaker vibrating body that can be used in high-output speakers with improved performance.
以下、本発明について、一実施例を示す図面に
従い詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment.
本発明の一実施例についての縦断側面図を第２
図に示すとともに、要部の拡大断面図を第３図に
示す。この実施例は、発泡スチロール等の発泡樹
脂材を断面台形状の略円錐体形状に成形して成る
振動体本体１０と、この振動体本体１０の頂部１
０ａ近傍を被覆する軽量高剛性材から成る被覆体
１１とを一体結合した構造を有し、駆動用のボイ
スコイルボビン１２を上記被覆体１１に接着固定
してスピーカ用振動体を構成したものである。な
お、第２図において、１３は振動体本体１０を弾
性支持するエツジ部材、１４は上記本体１０の音
響出力面側に貼着されたスキン層である。また、
１５はボイスコイルボビン１２を弾性支持するダ
ンパー部材、１６は上記ボビン１２に巻装された
ボイスコイルである。 A second longitudinal cross-sectional side view of an embodiment of the present invention is shown in FIG.
3, and an enlarged cross-sectional view of the main parts is shown in FIG. This embodiment includes a vibrator body 10 made of a foamed resin material such as styrene foam formed into a substantially conical shape with a trapezoidal cross section, and a top portion 1 of the vibrator body 10.
It has a structure in which a covering body 11 made of a lightweight and highly rigid material that covers the vicinity of 0a is integrally connected, and a driving voice coil bobbin 12 is adhesively fixed to the covering body 11 to constitute a speaker vibrating body. . In FIG. 2, 13 is an edge member that elastically supports the vibrating body 10, and 14 is a skin layer attached to the sound output surface side of the main body 10. Also,
15 is a damper member that elastically supports the voice coil bobbin 12, and 16 is a voice coil wound around the bobbin 12.
そして、上記発泡樹脂材から成る振動体本体１
０は、アルミニウム、マグネシウム、チタン、ベ
リリウム、ボロン等の単体あるいはラミネートし
たもの等の軽量高剛性材から該本体１０のテーパ
面１０ｂに適合当接するフランジ部１１ａと中央
部分が内側に折曲げられた筒部１１ｂとを形成し
て成る被覆体１１によつて、その頂部１０ａ近傍
が被覆されている。上記被覆体１１は、そのフラ
ンジ部１１ａが上記振動体本体１０のテーパ面１
０ｂに接着されるとともに、その筒部１１ｂの一
端縁１１ｃが該振動体本体１０にカシメ付によつ
て嵌着され、該振動体本体１０の頂部１０ａ近傍
に一体結合されている。なお、上記被覆体１１
は、パンチングメタルやメツシユ材等を用いるこ
とにより、振動体本体１０のテーパ面１０ｂとの
接着性を更に向上させるようにしても良い。ここ
で、上記振動体本体１０の頂部１０ｂ近傍に一体
結合されている被覆体１１のフランジ部１１ａの
外周端縁１１ｄと振動体本体１０の音響出力面の
外周端縁部分との間の距離Ｌaおよび、該被覆体
１１の筒部１１ｂの一端縁１１ｃと該音響出力面
の中央部分との間の距離Ｌbが略等しくなるよう
にしてある。 Then, a vibrating body body 1 made of the above-mentioned foamed resin material
0 is made of a lightweight, high-rigidity material such as aluminum, magnesium, titanium, beryllium, boron, etc. alone or laminated, and the flange portion 11a and the center portion that fit and contact the tapered surface 10b of the main body 10 are bent inward. The vicinity of the top portion 10a is covered by a covering body 11 formed with a cylindrical portion 11b. The covering body 11 has a flange portion 11a that is connected to the tapered surface 1 of the vibrating body main body 10.
0b, one end edge 11c of the cylindrical portion 11b is fitted onto the vibrating body main body 10 by caulking, and is integrally connected to the vicinity of the top portion 10a of the vibrating body main body 10. Note that the covering 11
Alternatively, the adhesion to the tapered surface 10b of the vibrating body body 10 may be further improved by using punching metal, mesh material, or the like. Here, the distance L between the outer circumferential edge 11d of the flange portion 11a of the covering body 11 integrally connected to the vicinity of the top 10b of the vibrating body main body 10 and the outer circumferential edge portion of the acoustic output surface of the vibrating body main body 10 a and the distance L b between one end edge 11c of the cylindrical portion 11b of the covering 11 and the central portion of the acoustic output surface are made to be approximately equal.
さらに、上記ボイスコイルボビン１２は、その
一端縁が被覆体１１の筒部１１ｂ内に挿入され、
接着剤１７によつて該被覆体１１に固着されてい
る。 Furthermore, one end edge of the voice coil bobbin 12 is inserted into the cylindrical portion 11b of the covering body 11,
It is fixed to the covering body 11 with an adhesive 17.
上述の如き構成の実施例においては、発泡樹脂
材から成る振動体本体１０の頂部１１ａ近傍を覆
う被覆体１１の内側に折曲げられた筒部１１ｂを
設け、この筒部１１ｂにボイスコイルボビン１２
を接着固定し、しかも、上記筒部１１ｂの一端縁
１１ｃを振動体本体１０に嵌着させているので、
上記被覆体１１を振動体本体１０に確実に固定で
きることは勿論、上記筒部１１ｂを利用して上記
ボイスコイルボビン１２を固定することにより、
取付精度の向上および取付状態の強化を図ること
ができ、音響出力特性が均一な振動体を提供する
ことができる。また、ボイスコイル１２において
発生される熱を上記筒部１１ｂを介して上記被覆
体１１によつて放熱することができるので、この
実施例の振動体を備えるスピーカ本体の耐熱性の
向上を図り大出力を得られるようにすることがで
きる。さらに、発泡樹脂材から成る振動体本体１
０の頂部１０ａ近傍全体が軽量高剛性材から成る
被覆体１１を介して振動駆動されるので、振動体
本体１０の固有振動による音響出力特性への悪影
響を軽減することができる。さらにまた、振動体
本体１０の音響出力面は、その周縁部分と中央部
分が被覆体１１のフランジ部１１ａの外周端縁１
１ｄと筒部１１ｂの一端縁１１ｃとから略等しい
距離Ｌa，Ｌbにあるので、位相特性の良好な音響
出力を出力する。 In the embodiment configured as described above, a bent cylindrical portion 11b is provided inside the cover 11 that covers the vicinity of the top 11a of the vibrating body main body 10 made of a foamed resin material, and the voice coil bobbin 12 is attached to this cylindrical portion 11b.
are fixed with adhesive, and one end edge 11c of the cylindrical portion 11b is fitted into the vibrating body body 10.
Not only can the covering 11 be reliably fixed to the vibrating body body 10, but also by fixing the voice coil bobbin 12 using the cylindrical portion 11b,
It is possible to improve the mounting accuracy and strengthen the mounting condition, and it is possible to provide a vibrating body with uniform acoustic output characteristics. Furthermore, since the heat generated in the voice coil 12 can be radiated by the covering body 11 through the cylindrical portion 11b, the heat resistance of the speaker body including the vibrating body of this embodiment is greatly improved. You can make it possible to get the output. Further, a vibrating body body 1 made of a foamed resin material is provided.
Since the entire vicinity of the top portion 10a of the vibrating body 10 is vibrated through the covering body 11 made of a lightweight and highly rigid material, the adverse effect of the natural vibration of the vibrating body body 10 on the acoustic output characteristics can be reduced. Furthermore, the sound output surface of the vibrating body body 10 has its peripheral edge portion and central portion aligned with the outer peripheral edge 11a of the flange portion 11a of the covering body 11.
1d and the one end edge 11c of the cylindrical portion 11b, the distances L a and L b are approximately the same, so that an acoustic output with good phase characteristics is output.
ここで、この実施例における振動体と被覆体を
取除いてボイスコイルを直接に振動体本体に結合
して成る振動体すなわち従来例との各音響出力周
波数特性の実測結果を第４図に示す。第４図にお
いて、実線は実施例の特性線を示し、破線は従来
例の特性線を示している。この第４図の特性線図
からも明らかなように、上述の如き構成の実施例
においては、従来例と比較して高域共振周波数を
約3000Hz程度上昇させることができるとともに高
域のピーク・デツプを減少させて平坦にすること
ができ、良好な音響出力周波数特性を得ることが
できる。 Fig. 4 shows the actual measurement results of the acoustic output frequency characteristics of the vibrating body of this embodiment in which the vibrating body and the covering body are removed and the voice coil is directly coupled to the vibrating body body, that is, the conventional example. . In FIG. 4, the solid line shows the characteristic line of the embodiment, and the broken line shows the characteristic line of the conventional example. As is clear from the characteristic diagram in FIG. 4, in the embodiment with the above-mentioned configuration, the high-frequency resonance frequency can be increased by about 3000 Hz compared to the conventional example, and the high-frequency peak The depth can be reduced and flattened, and good acoustic output frequency characteristics can be obtained.
上述の実施例の説明から明らかなように、本発
明によれば、発泡樹脂材を略円錐体形状に成形し
た振動体本体の頂部近傍を軽量高剛性材の被覆体
で被覆したスピーカ用振動体において、上記被覆
体は、上記振動体本体のテーパ面に接着されるフ
ランジ部と、中央部分が内側に折曲げられた筒部
と、上記振動体本体に嵌着された上記筒部の一端
縁とを有し、上記筒部に駆動用のボイスコイルボ
ビンを接着固定して成ることを特徴とすることに
よつて、平坦な音響出力周波数特性で、耐熱性に
優れ、かつ、均一な音響特性のスピーカ用振動体
を提供することができる。 As is clear from the description of the embodiments described above, according to the present invention, there is provided a vibrating body for a speaker in which the vicinity of the top of the vibrating body body formed of a foamed resin material into a substantially conical shape is covered with a covering body made of a lightweight and highly rigid material. In the above, the covering body includes a flange portion adhered to the tapered surface of the vibrating body main body, a cylindrical portion whose center portion is bent inward, and one end edge of the cylindrical portion fitted onto the vibrating body body. A driving voice coil bobbin is adhesively fixed to the cylindrical portion, thereby achieving flat acoustic output frequency characteristics, excellent heat resistance, and uniform acoustic characteristics. A vibrating body for a speaker can be provided.
第１図はスピーカ用振動体の従来例の概略的構
造を示す縦断側面図である。第２図は本発明の一
実施例を示す縦断側面図である。第３図は上記実
施例の要部の拡大断面図である。第４図は上記実
施例と従来例との各音響出力周波数特性の実測結
果を示す特性線図である。
１０……振動体本体、１０ａ……頂部、１０ｂ
……テーパ面、１１……被覆体、１１ａ……フラ
ンジ部、１１ｂ……筒部、１１ｃ……一端縁、１
２……ボイスコイルボビン。
FIG. 1 is a longitudinal sectional side view showing a schematic structure of a conventional example of a vibrating body for a speaker. FIG. 2 is a longitudinal sectional side view showing one embodiment of the present invention. FIG. 3 is an enlarged sectional view of the main parts of the above embodiment. FIG. 4 is a characteristic diagram showing actual measurement results of each acoustic output frequency characteristic of the above embodiment and the conventional example. 10... Vibrating body body, 10a... Top, 10b
... Tapered surface, 11 ... Covering body, 11a ... Flange portion, 11b ... Cylindrical portion, 11c ... One end edge, 1
2...Voice coil bobbin.
Claims (1)
本体の頂部近傍を軽量高剛性材の被覆体で被覆し
たスピーカ用振動体において、上記被覆体は、上
記振動体本体のテーパ面に接着されるフランジ部
と、中央部分が内側に折曲げられた筒部と、上記
振動体本体に嵌着された上記筒部の一端縁とを有
し、上記筒部に駆動用のボイスコイルボビンを接
着固定して成ることを特徴とするスピーカ用振動
体。1. A vibrating body for a speaker in which the vicinity of the top of a vibrating body formed of a foamed resin material into a substantially conical shape is covered with a covering made of a lightweight and highly rigid material, wherein the covering is adhered to a tapered surface of the vibrating body. a flange portion, a cylindrical portion with a central portion bent inward, and one end edge of the cylindrical portion fitted to the vibrating body body, and a driving voice coil bobbin is adhesively fixed to the cylindrical portion. A vibrating body for a speaker characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10000478A JPS5527703A (en) | 1978-08-18 | 1978-08-18 | Vibrator for speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10000478A JPS5527703A (en) | 1978-08-18 | 1978-08-18 | Vibrator for speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5527703A JPS5527703A (en) | 1980-02-28 |
| JPS6211558B2 true JPS6211558B2 (en) | 1987-03-13 |
Family
ID=14262423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10000478A Granted JPS5527703A (en) | 1978-08-18 | 1978-08-18 | Vibrator for speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5527703A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5846797A (en) * | 1981-09-14 | 1983-03-18 | Sharp Corp | Speaker with plane diaphragm and its production |
| JPS58129635A (en) * | 1982-01-29 | 1983-08-02 | Canon Inc | Character processing device |
| JPS58129634A (en) * | 1982-01-29 | 1983-08-02 | Canon Inc | Character processing device |
| JPS58178434A (en) * | 1982-04-13 | 1983-10-19 | Canon Inc | Character processor |
| JPS6057294U (en) * | 1983-09-27 | 1985-04-22 | 三洋電機株式会社 | flat speaker |
| JP2583879B2 (en) * | 1987-03-16 | 1997-02-19 | 日本電信電話株式会社 | Information retrieval device |
| JP2002135888A (en) * | 2000-10-23 | 2002-05-10 | Pioneer Electronic Corp | Diaphragm for speaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414722A (en) * | 1977-07-06 | 1979-02-03 | Hitachi Ltd | Acoustic diaphragm |
-
1978
- 1978-08-18 JP JP10000478A patent/JPS5527703A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414722A (en) * | 1977-07-06 | 1979-02-03 | Hitachi Ltd | Acoustic diaphragm |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5527703A (en) | 1980-02-28 |
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