JPH0287899A - Diaphragm for loudspeaker - Google Patents

Abstract

PURPOSE:To prevent the generation of a distortion caused by vibration by forming an edge of a cone by placing a first raw material and a second raw material and giving uniform flexibility in the radial direction of its forming raw material. CONSTITUTION:Plural warps 14 are placed in the center axis direction in a cone 12, and plural wefts 15 are placed in the concentric circle direction against the center axis and they are braided like a bellows. In this case, a constricted part 17 become the inside diameter of a cone joint part 11, the maximum outside diameter part is controlled to the diameter corresponding to the maximum outside diameter, and to a braiding and forming textile material which is obtained by cutting successively, impregnation of a resin such as phenol, etc., is executed, and thereafter, it is further heated and formed and an edge 16 whose cross section is like a roll is obtained, and this edge 16 is joined to a peripheral edge part of the cone 12. In such a way, a forming raw material in which a first raw material 14 and a second raw material 15 are formed in obtained. Therefore, flexibility in the radial direction being the transfer direction of all oscillatory waves becomes uniform, and by suppressing low a vibration distortion, the generation of the vibration distortion can be prevented.

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適用されるスピーカ用振動板に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker diaphragm applied to various types of audio equipment.

従来の技術 近年、スピーカ用振動板には音波発生源であるコーン周
辺部とその支持体であるフレームとの間に介した部分を
平衡支持させるためにエツジが利用されている。2. Description of the Related Art In recent years, edges have been used in speaker diaphragms to provide balanced support for the portion interposed between the periphery of the cone, which is the source of sound waves, and the frame, which is the support for the cone.

以下にこの種の従来のスピーカ用振動板について説明す
る。This type of conventional speaker diaphragm will be described below.

第６図は従来のスピーカ用振動板の概略構成を示す平面
図である。また、第６図は第６図のＡ−Ｂ方向の一部切
欠断面図である。これらの図において１はコーン６と貼
合せて接合するコーン接合部、２は同スピーカのフレー
ム（図示せず）と貼合わせて接合するフレーム接合部、
３は繊維の縦糸、４は同繊維の横糸、６は縦糸３及び横
糸４で互いに編上げたロール状成形繊維からなるエツジ
でおる。FIG. 6 is a plan view showing a schematic configuration of a conventional speaker diaphragm. Further, FIG. 6 is a partially cutaway sectional view taken along the line A-B in FIG. 6. In these figures, 1 is a cone joint that is pasted and joined to the cone 6, 2 is a frame joint that is pasted and joined to the frame (not shown) of the same speaker,
3 is the warp of the fiber, 4 is the weft of the same fiber, and 6 is an edge made of rolled fibers knitted together by the warp 3 and weft 4.

以上のように構成されたスピーカ用振動板について、以
下その動作を説明する。The operation of the speaker diaphragm configured as described above will be described below.

まず、電気入力信号に応じて駆動するボイスコイルによ
ってコーン６が矢線Ｃ方向に上下振動する。するとロー
ル状に成形されたエツジ６はコーン６の上下振動に応じ
て振動しながらコーンらの周辺部を支持する。First, the cone 6 is vertically vibrated in the direction of arrow C by a voice coil driven according to an electrical input signal. Then, the edge 6 formed into a roll supports the peripheral portions of the cones while vibrating in accordance with the vertical vibration of the cones 6.

発明が解決しようとする課題 しかしなからか−る構成によれば、縦糸３及び横糸４０
編上げ方向によシコーンθの中心部駆動点Ｃに対して柔
軟性が異る。特に縦糸３．横糸４方向に比べ、これらの
方向とは略４６°異る矢線り方向の柔軟性は大きく異な
る。この結果、コーン６の振動歪みを発生し、音質が劣
化してしまうという問題点を有していた。However, according to a certain structure, the warp threads 3 and the weft threads 40
The flexibility differs with respect to the driving point C at the center of the silicone θ depending on the knitting direction. Especially the warp 3. Compared to the four weft directions, the flexibility in the arrow direction, which differs by approximately 46 degrees from these directions, is significantly different. As a result, there is a problem in that vibration distortion of the cone 6 occurs, resulting in deterioration of sound quality.

本発明は前記従来の問題点を解決するもので、振動波が
伝達する放射状方向の柔軟性が均一で、振動歪みの発生
を防止することのできるスピーカ用振動板を提供するこ
とを目的とするう課題を解決するための手段 上記課題を解決するために本発明は、放射状に配した第
１の素材及び第１の素材と略直交するように配した第２
の素材を成形したエツジをコーンの周縁部に接合して構
成したものである。The present invention solves the above-mentioned conventional problems, and aims to provide a speaker diaphragm that has uniform flexibility in the radial direction through which vibration waves are transmitted and can prevent vibration distortion from occurring. Means for Solving the Problems In order to solve the above problems, the present invention provides first materials disposed radially and second materials disposed substantially perpendicular to the first materials.
It is constructed by joining an edge molded from the same material to the periphery of the cone.

作用 本発明は上述の構成によって、第１の素材と第２素材が
成形された成形素材となるために、振動波のすべての伝
達方向である放射状方向の柔軟性が均一となって振動歪
を低く押えて、振動歪の発生を防止することができる。Effect of the Invention With the above-described configuration, the present invention becomes a molded material in which the first material and the second material are molded, so that the flexibility in the radial direction, which is the direction in which vibration waves are transmitted, is uniform and vibration distortion is reduced. By keeping the pressure low, vibration distortion can be prevented.

実施例 以下本発明の一実施例について、図面を参照しながら説
明する。EXAMPLE An example of the present invention will be described below with reference to the drawings.

第１図は本発明の一実施例におけるスピーカ用振動板の
概略構成を示す平面図である。また第２図は第１図のＥ
−Ｆ方向の一部切欠断面図である。FIG. 1 is a plan view showing a schematic configuration of a speaker diaphragm in an embodiment of the present invention. Also, Figure 2 shows E in Figure 1.
- It is a partially notched sectional view in the F direction.

これらの図において１１はコーン１２と貼合せて接合す
るコーン接合部、１３はフレームと貼合せて接合するフ
レーム接合部、１４は繊維の縦糸、１６は繊維の横糸、
１６は縦糸１４及び横糸１６で互いに編まれたロール状
成形繊維からなるエツジである。In these figures, 11 is a cone joint where the cone 12 is pasted and joined, 13 is a frame joint where the frame is pasted and joined, 14 is the warp of the fiber, 16 is the weft of the fiber,
Reference numeral 16 denotes an edge made of rolled fibers knitted together by warp threads 14 and weft threads 16.

以上のように構成された一実施例によるスピーカ用振動
板のエツジ１６の製造工程について説明する。第３図に
おいて、コーン１２の中心軸方向に複数の縦糸１４を配
し、前記中心軸に対して同心円方向に複数の横糸１６を
配して蛇腹状に編上げる。この際、くびれ部分１７をコ
ーン接合部１１の内径とし、最大外径部分をエツジ最大
外径相当の径に規制している。次に第４図の破線で示し
た部分を順次切断する。そして、得られた編上げ成形織
材にフェノール等の樹脂含浸を行った後にさらに加熱成
形して断面ロール状のエツジ１６を得る。The manufacturing process of the edge 16 of the speaker diaphragm according to the embodiment configured as described above will be explained. In FIG. 3, a plurality of warp yarns 14 are arranged in the direction of the central axis of the cone 12, and a plurality of weft yarns 16 are arranged in a concentric direction with respect to the central axis, so that the cone 12 is knitted in a bellows shape. At this time, the constricted portion 17 is the inner diameter of the cone joint portion 11, and the maximum outer diameter portion is regulated to a diameter equivalent to the maximum outer diameter of the edge. Next, the portions indicated by broken lines in FIG. 4 are sequentially cut. Then, the resulting knitted woven material is impregnated with a resin such as phenol, and then further heat-molded to obtain an edge 16 having a rolled cross-section.

このように本実施例によればこのような編上げ成形織材
を容易にかつ損失少く大量に製造することができる。As described above, according to this embodiment, such a knitted woven fabric material can be easily produced in large quantities with little loss.

次にこうして得られたエツジ１６の撮動動作について説
明する。第２図において、ボイスコイルが矢線Ｃ方向に
上下振動すると、コーン１２はボイスコイルに応動して
上下振動する。一方、第１図において、放射状方向に設
けられたエツジ１６の縦糸１４と、同心円状に設けられ
た横糸１６が互に編上げられている。従って、振動波の
すべての伝達方向に均一な柔軟性を有しており、振動に
おける歪みを低く押えることができる。Next, the operation of photographing the edge 16 obtained in this way will be explained. In FIG. 2, when the voice coil vibrates up and down in the direction of arrow C, the cone 12 vibrates up and down in response to the voice coil. On the other hand, in FIG. 1, the warp threads 14 of the edges 16 provided in the radial direction and the weft threads 16 provided concentrically are knitted together. Therefore, it has uniform flexibility in all directions of transmission of vibration waves, and distortion caused by vibration can be suppressed to a low level.

なお、本実施例ではエツジ１６をロール状としたが、コ
ーン１２を適正に平衡支持する他の形状例えば波形、溝
ロール状でもよい。まだ縦糸１４の素材及び横糸１６の
素材には木綿、化学繊維等これに類した耐候性の素材を
用いることができ、又縦糸１４と横糸１６を同質並びに
同径の素材を用いることもできるが、性能向上の目的で
異質素材並びに異る径の繊維素材を用いることができる
。In this embodiment, the edge 16 has a roll shape, but it may have another shape that properly supports the cone 12 in a balanced manner, such as a corrugated shape or a grooved roll shape. However, similar weather-resistant materials such as cotton and chemical fibers can be used for the warp threads 14 and the weft threads 16, and materials of the same quality and diameter can be used for the warp threads 14 and the weft threads 16. , different materials as well as fiber materials of different diameters can be used to improve performance.

発明の効果 以上の説明から明らかなように本発明によれば、第１の
素材と、第２の素材を配して成形するために、その成形
素材の放射状方向において、均一な柔軟性を有し、振動
による歪の発生を防止することができるという効果を有
するものである。Effects of the Invention As is clear from the above explanation, according to the present invention, since the first material and the second material are placed and molded, the molding material has uniform flexibility in the radial direction. However, it has the effect of being able to prevent the occurrence of distortion due to vibration.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例におけるスピーカ用振動板の
概略構成の平面図、第２図は第１図の２−Ｆ線による一
部切欠断面図、第３図は蛇腹状繊維の要部斜視図、第４
図は同概略正面図、第６図は従来のスピーカ用振動板の
概略構成の平面図。 第６図は第６図のムーＢ線による一部切欠断面図である
。 １１・・・・・・コーン接合部、１２・・・・・・コー
ン、１３・・・−・−フレーム接合部、１４・・・・・
・縦糸、１５・・・・・・横糸、 ６・・・・・・エツジ。 第 図FIG. 1 is a plan view of a schematic configuration of a speaker diaphragm according to an embodiment of the present invention, FIG. 2 is a partially cutaway sectional view taken along line 2-F in FIG. 1, and FIG. Part perspective view, 4th
The figure is a schematic front view of the same, and FIG. 6 is a plan view of a schematic configuration of a conventional speaker diaphragm. FIG. 6 is a partially cutaway sectional view taken along the line B in FIG. 11... Cone joint, 12... Cone, 13...-Frame joint, 14...
・Warp, 15...Weft, 6...Edge. Diagram

Claims (2)

【特許請求の範囲】[Claims] （１）放射状に配した第１の糸素材、及び前記第１の糸
素材と略直交するように配した第２の糸素材から成るエ
ッジをコーンの周縁部に接合してなるスピーカ用振動板
。(1) A speaker diaphragm formed by joining an edge made of a first thread material arranged radially and a second thread material arranged substantially orthogonally to the first thread material to the peripheral edge of a cone. . （２）第２の糸素材を同心円状に配した請求項１記載の
スピーカ用振動板。(2) The speaker diaphragm according to claim 1, wherein the second thread material is arranged concentrically.