JPS6347039B2 - - Google Patents
Info
- Publication number
- JPS6347039B2 JPS6347039B2 JP55140988A JP14098880A JPS6347039B2 JP S6347039 B2 JPS6347039 B2 JP S6347039B2 JP 55140988 A JP55140988 A JP 55140988A JP 14098880 A JP14098880 A JP 14098880A JP S6347039 B2 JPS6347039 B2 JP S6347039B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- present
- speaker
- frequency
- cut portions
- 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 18
- 239000011162 core material Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002313 adhesive film Substances 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
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 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
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】
本発明はスピーカ用振動板に関し、高域共振ピ
ークを低減できるスピーカ用振動板を提供するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm for a speaker, and provides a diaphragm for a speaker that can reduce high-frequency resonance peaks.
平板状振動板をスピーカの振動板として用いる
場合前記効果が無いため平坦な周波数特性が高域
共振点まで得られる。その帯域を拡大するために
は振動板の比弾性率(E/P)を向上することが
必要であるが比弾性率の向上に伴つて高域共振も
大きくなりスピーカシステムとしてウーハ、スコ
ーカ、ツイータ等をつなぐ場合、電気的にピーク
カツトを行なうか、実質狭帯域で使用されてい
る。また振動板の高域共振ピークカツトの他の方
法として表面材に高機械損失部材を併用すると
か、ボイスコイル接続部に高機械損失部材を使用
するなどの方法である。しかしこれらの方法は再
生周波数帯域の低減をまねき、また重量増による
能率の低下につながる欠点があつた。 When a flat diaphragm is used as a diaphragm of a speaker, the above-mentioned effect is not present, so that flat frequency characteristics can be obtained up to the high-frequency resonance point. In order to expand the band, it is necessary to improve the specific elastic modulus (E/P) of the diaphragm, but as the specific elastic modulus improves, the high-frequency resonance also increases. etc., the peak is cut electrically or it is used in a substantially narrow band. Other methods for cutting the high-frequency resonance peak of the diaphragm include using a high mechanical loss material in combination with the surface material, or using a high mechanical loss material in the voice coil connection portion. However, these methods have drawbacks such as a reduction in the reproduction frequency band and a decrease in efficiency due to an increase in weight.
本発明は上記の従来例の欠点をなくし効率よく
高域共振のピークカツトを実現するものであり、
心材の表面に表面材を貼り合せるサンドイツチ構
造の平板振動板においてその効果を発揮するもの
である。 The present invention eliminates the drawbacks of the above-mentioned conventional example and efficiently realizes high-frequency resonance peak cutting.
This effect is demonstrated in flat plate diaphragms with a Sanderch structure in which a surface material is bonded to the surface of a core material.
本発明の特徴はサンドイツチ構造の振動板の表
面材に部分的なスリツト状の切断部を有するもの
を使用することにある。この切断形状、位置、大
きさを最適に選ぶことにより再生周波数帯域をあ
まり低下させずに高域共振ピークを大きく低減で
きるものである。 A feature of the present invention lies in the use of a surface material of a diaphragm having a sanderch structure having partial slit-like cuts. By optimally selecting the cut shape, position, and size, it is possible to greatly reduce the high-frequency resonance peak without significantly lowering the reproduction frequency band.
以下に従来例および本発明の実施例について説
明する。 A conventional example and an embodiment of the present invention will be described below.
従来例
第1図において、1はハニカム心材であり、こ
の心材1の表裏面に30μのアルミニウム箔からな
る表面材2,2′をフイルム状接着剤3,3′によ
り接着されている。このフイルム状接着剤3,
3′による接着は、心材1と表面材2,2′との間
にフイルム状接着剤3,3′を介在させておき、
加熱によりフイルム状接着剤3,3′を溶融させ
て接着するものである。完成した振動板は厚さ3
mm、直径8cm、重量2.5gである。第1図におい
て、4は振動板の下面に固定された円筒状のコイ
ルボビンであり、このコイルボビン4にボイスコ
イル5が巻回されている。上記振動板はエツジ部
材を介してフレームに支持され、ボイスコイル5
は磁気回路の環状の磁気ギヤツプに挿入される。Conventional Example In FIG. 1, 1 is a honeycomb core material, and surface materials 2 and 2' made of 30 μm aluminum foil are adhered to the front and back surfaces of this core material 1 using film adhesives 3 and 3'. This film adhesive 3,
3', film adhesives 3, 3' are interposed between the core material 1 and the surface materials 2, 2',
The adhesive film 3, 3' is melted and bonded by heating. The completed diaphragm has a thickness of 3
mm, diameter 8cm, weight 2.5g. In FIG. 1, 4 is a cylindrical coil bobbin fixed to the lower surface of the diaphragm, and a voice coil 5 is wound around this coil bobbin 4. The diaphragm is supported by the frame via an edge member, and the voice coil 5
is inserted into the annular magnetic gap of the magnetic circuit.
実施例
第2図、第3図に示すように、従来例と同様に
心材1の表裏面にフイルム状接着剤3,3′によ
り表面材2,2′を接着するものであるが、本実
施例においては表面材2,2′に同心円状の部分
的なスリツト状の切断部6を6ケ所に形成するも
のである。なお、切断部6の形成個所は表面材2
と2′とで異なつた個所である。Embodiment As shown in FIGS. 2 and 3, surface materials 2 and 2' are bonded to the front and back surfaces of a core material 1 using film adhesives 3 and 3', as in the conventional example. In the example, concentric partial slit-shaped cut portions 6 are formed at six locations on the surface material 2, 2'. Note that the cut portion 6 is formed at the surface material 2.
This is the difference between 2' and 2'.
第4図は上記従来の振動板を用いたスピーカa
および本発明の振動板を用いたスピーカbの音圧
周波数特性を示しており、本発明のように、表面
材2,2′に部分的なスリツト状の切断部6を形
成した場合には、高域共振におけるピーク値を従
来例の1/4以下に低減できるものであり、このた
めにより高域まで平担な音圧周波数特性が得られ
るものである。 Figure 4 shows a speaker a using the conventional diaphragm described above.
and shows the sound pressure frequency characteristics of speaker b using the diaphragm of the present invention, and when partial slit-shaped cut portions 6 are formed in the surface materials 2 and 2' as in the present invention, The peak value in high-frequency resonance can be reduced to 1/4 or less of that of the conventional example, and as a result, a more even sound pressure frequency characteristic can be obtained up to the high frequency range.
なお、上記実施例では、両表面材2,2′にス
リツト状の切断部6を形成しているが、一方の表
面材のみに切断部6を形成してもよいものであ
る。また、切断部6の形状は円形に限らず放射状
の切断部を形成してもよいものである。また、両
表面材2,2′にスリツト状の切断部6を形成す
る場合、同一個所に切断部6を形成する場合、振
動板の剛性が低下することもあり得るので、両表
面材2,2′に切断部6を形成する場合には、第
2図に示す実施例のように異なつた個所に切断部
を形成することが好ましい。 In the above embodiment, the slit-shaped cut portions 6 are formed on both the surface materials 2, 2', but the cut portions 6 may be formed on only one surface material. Further, the shape of the cut portion 6 is not limited to a circular shape, and a radial cut portion may be formed. In addition, when forming the slit-shaped cut portions 6 on both the surface materials 2 and 2', and when forming the cut portions 6 at the same location, the rigidity of the diaphragm may decrease. When forming the cut portions 6 at 2', it is preferable to form the cut portions at different locations as in the embodiment shown in FIG.
上記実施例は円形の振動板の例であるが、円形
に限らず、矩形の振動板等においても、同様であ
る。 Although the above embodiment is an example of a circular diaphragm, the present invention is not limited to a circular diaphragm, and the same applies to a rectangular diaphragm or the like.
本発明は上記のような構成であり、高域共振に
おけるピーク値が低減でき、高域まで平担な音圧
周波数特性が得られるものである。 The present invention has the above-mentioned configuration, and can reduce the peak value in high-frequency resonance, and can obtain sound pressure frequency characteristics that are even in the high-frequency range.
第1図は従来のスピーカ用振動板の断面図、第
2図は本発明の一実施例におけるスピーカ用振動
板の断面図、第3図は同上面図、第4図は本発明
の振動板および従来の振動板を用いたスピーカの
音圧周波数特性図である。
1……心材、2,2′……表面材、3,3′……
フイルム状接着剤、4……コイルボビン、5……
ボイスコイル、6……切断部。
FIG. 1 is a sectional view of a conventional speaker diaphragm, FIG. 2 is a sectional view of a speaker diaphragm according to an embodiment of the present invention, FIG. 3 is a top view of the same, and FIG. 4 is a diaphragm of the present invention. and a sound pressure frequency characteristic diagram of a speaker using a conventional diaphragm. 1... Heart material, 2, 2'... Surface material, 3, 3'...
Film adhesive, 4... Coil bobbin, 5...
Voice coil, 6... Cutting section.
Claims (1)
チ構造のスピーカ用振動板において、少なくとも
一方の上記表面材に、部分的な同心円状のスリツ
トを複数個形成したスピーカ用振動板。1. A speaker diaphragm having a sandwich structure in which surface materials are bonded to the front and back surfaces of a core material, in which a plurality of partially concentric slits are formed in at least one of the surface materials.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14098880A JPS5765097A (en) | 1980-10-07 | 1980-10-07 | Vibration diaphragm for speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14098880A JPS5765097A (en) | 1980-10-07 | 1980-10-07 | Vibration diaphragm for speaker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5765097A JPS5765097A (en) | 1982-04-20 |
JPS6347039B2 true JPS6347039B2 (en) | 1988-09-20 |
Family
ID=15281522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14098880A Granted JPS5765097A (en) | 1980-10-07 | 1980-10-07 | Vibration diaphragm for speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5765097A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2478160B (en) * | 2010-02-26 | 2014-05-28 | Pss Belgium Nv | Mass loading for piston loudspeakers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5037427A (en) * | 1973-06-16 | 1975-04-08 |
-
1980
- 1980-10-07 JP JP14098880A patent/JPS5765097A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5037427A (en) * | 1973-06-16 | 1975-04-08 |
Also Published As
Publication number | Publication date |
---|---|
JPS5765097A (en) | 1982-04-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS603277B2 (en) | speaker device | |
JP5327268B2 (en) | Electroacoustic transducer and diaphragm | |
JPS6347039B2 (en) | ||
JPS6336795Y2 (en) | ||
JPS60171900A (en) | Speaker | |
JP2008085985A (en) | Electroacoustic transducer and diaphragm | |
JPS6150494A (en) | Speaker | |
JPS5819915Y2 (en) | speaker | |
JPS6135760B2 (en) | ||
JPS6321400B2 (en) | ||
JPS6115676Y2 (en) | ||
JPS58107800A (en) | Rectangular flat plate diaphragm | |
JPS6216063Y2 (en) | ||
JPH0129909Y2 (en) | ||
JPH0129360B2 (en) | ||
KR840002210B1 (en) | A speaker | |
JPS599505Y2 (en) | speaker | |
JPS6324600B2 (en) | ||
JPH0238552Y2 (en) | ||
JPS636959Y2 (en) | ||
JPH0129913Y2 (en) | ||
JPS623987Y2 (en) | ||
JPS60219899A (en) | Speaker | |
JPH0238553Y2 (en) | ||
JPS6138917B2 (en) |