1322627 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種揚聲器用振動板的構造，係在揚聲 盗中’具有發射音波之功能的組件。 【先前技術】 習知之揚聲器係由’將電性訊號能量轉換成機械性的 振動能量之機電感測器與、藉由來自該機電感測器所輸出 的機械振動能量所驅動而振動，以發射聲波能（ac〇ustic energy)之振動板之如習知之主構件所構成。第i圖中， 如上述將-般的揚聲器之振動板構造與周邊構件同時以模 型之形態表示時，係在振動板！的中心安裝音圈3，並利 ^振動板i之外周具有撓性邊緣2，或藉由振動板之中心 邛同樣具有撓性之擋板4，在各個框架（省略圖示）内側 =維持可自由振動的方式。然後，音圈3係插入在磁性電 路（同樣地省略圖示）的磁場中 作辨雷4认+丄 亚猎由在該音圈3輸入 ϋΓ 振動板1的中心部驅動並振動，而發 【發明内容】 (發明所欲解決的問題） 此時，若以各種頻率令振動板 同-個相位進行振動時，雖在一般的 ：中中= 的音麼頻率特性構成平坦，且可得 立再生曰 甴於据翻妃士6 行艮好的日質，但實際上， 相對…邻：係具有撓性，所以，當驅動的頻率變高時， 中^使得外周㈣近的相位延遲，細特定的頻 315938 5 互：：，It:卜周部在逆相中振動’而使所發射的音波相 ΐ中在生傾斜，又或者是，在某-頻 而生成波峰，俾使定::=烈共振 式’令振動板i分開共振的現象 由二：方 ::_曲振動使得高心真：::振:::: t，刀開振動中’振動板之形狀及材料物性的干預，尤其 :性度與揚氏模量亦即材料的機 性值賦予^頻率特性或歪曲程度所構成代表性的物 於明朗，二产杂衫響，且該等物性值的指示方向也漸漸趨 Α至s貫際的材料中，雖實現了技術性的要求，而 ill f變佳之頻率特性的平坦化，因此，在揚聲 :板：：之際’便必需解決所謂「需要耗費太多努力在振 動板材料的開發」之問題。 材嵙：* Η本發月的目的，係為了解決由上述課題的振動 二、、％ ’而著眼於’具有用以賦予形狀之加性較佳 ^成樹I旨、與具有優異物性值之木材等賴維素系的材 二’亚由合成樹脂與纖維素系粉末材料而開發適用於揚聲 盗用振動板的混合材料’並廉價地提供—種音響性能優里 且生產性良好之揚聲器用振動板。 …為:達成該目的，本發明之揚聲器用振動板的構造， :宇、將非氣系合成樹脂、與粒度分佈為5 " m至則㈣的纖 維素系粉末的混合材料成型而構成。， 【實施方式】 315938 6 1322627 (發明之實施形態） 為了解決上述課題，本發明之揚^㈣動板（ 為了方便說明，將振動板之本體 此此-么人丄丄 股口 間稱為振動板1)係 糸：細旨、與粒度分佈為5㈣至500"m(希望 :至400"m)之纖維素系粉末的混合材料成 =t:非氣系合成樹脂可為熱固性合成樹脂或熱塑: :成树脂中之任一種，但-般係以例如聚烯烴系、聚笨乙 =，系等的合成樹脂做為非氯系合成樹脂，特= :该寺之中，聚丙浠樹脂係從機械物性、易於加工、使用 境：染的防止等立場來說係為優異。纖維素系粉末 =用:木粉、碎紙片、紙漿粉末、棉絨粉、竹粉、洋麻、 =.、=等麟材料的粉末。纖維素系粉末係因 而施以表面處理，且其目的么 而 纖·准貝材料表面與合成樹脂進行化學鍵結之親和力。纖维 =粉末與合成樹脂的混合比例，係相對於混合材料將纖 ^素系粉末構成為3G重量％至7。重量％程度的比例為適 最好係構成為40重量％至6〇重量％為更佳。當纖維 素錄末的混合比例過大時，會出現脆弱性而成為不適合 於该用途者。 ▲在纖維素系粉末因應所需而施行的表面處理係例如有 =的利f馬來酸酐等之多元酸肝將纖維素系粉末物質予以 酉曰=。藉由將該酯化纖維素系粉末物質與合成樹脂及微量 的苯醒過氧化物等的有機過氧化物予以混合之方式，使纖 維素系粉末與合成樹脂的親和力變大，並且不僅可使纖維 315938 7 ，素系粉末的混合比例拎 大量的纖維素系粉末7 ’在將兩材料混合時’即便混入 製造加易且irt & ，也不會因此降低流動性，且可使兑 二= 良好的成形性。另外’當纖維料f、t 且例如混合的僅可得較大的混合比率，而 在製品的塗裝:構件t使為聚稀煙ΐ的合成樹脂，亦可 僅以辛面詹理亩拉、站接之際，可藉由簡單的機械研磨 ®以表面處理直接塗裝或黏接。當然 ’ 形相同的等—離子體照射處 ::處：般 )必然更可使黏接力或塗裝膜的安定度;:的基底處理，則 :纖維素系粉末混合的非氣系合成樹脂敎 二=2可為熱固性合成樹脂。但是，從成型的難易、 =的基本物性、材料的再利用性、棄材處理、材丄 2=以聚稀烴系合成樹脂，尤其以聚丙一 者：在ΐϋΐ成型來進行’但當然亦可為麗出成型 的成型方法中，可使用泛用樹脂用的成型機。 的成型溫度係以戰至赠程度的範圍為適 X另外’例如使用檜木粉做為混合的纖維素系粉末，並 ，2將成型溫度控制在前述程度的範圍，則可使製品的木 曰持績。此時’亦可在使用的纖維素系粉末利用合成香料 進行香味的強調或調香者。 在以上所述本發明之揚聲器用振動板，係藉由混合纖 維素系粉末的表面處理作用，增加對於合成樹脂之分子的 親和力，因此，相對於合成樹腊可以以較大的比例進行混 合。另外，鐵维素系粉末的比例較大係表示振動板】的剛 315938 8 1322627 Π 二將振動板1分開振動時，隨著振動板丨 械性的内部損幻與所混合之合成樹二本= 體較大的一值。上述振動板1的高揚氏模 =化、_的增A，係在揚聲器進行振動時，不僅 動板1的分開共振不易產生，並使頻率特性變佳，且降低 二=於分開共振之振動板10ijf曲變形之非直線彎曲或 心以曲的程度’並具有防止再生音質劣化的作用。 另外，藉由增大前述纖維素系粉末與合成樹脂之分子 =親和力’可使混合材料之流動性在極為良好情況下，可 成型為厚度G.lmm至〇.5mm程度㈣動板。以射 :為成型方法時’由於亦可使用一般的沉用樹脂用的成型 機，因此，不僅不會在設備投資上造成多餘的費用，且由 於成型條件也與-般情形無異，所以在生產上並不會有任 何的困難。又’由於當混合比率較大時也可保持其流動性， :以不會造成生產能力的低下，再者，比較使用其他無機 貝糸的填充材時，由於可令金屬模之汽缸或螺桿的磨耗較 少’所以可降低設備的保固費用。 /關於本發明之振動板1，構成振動板本體部之混合材 料係可再利用之材料，且因使用非氣系合成樹脂，所以即 便在廢棄之際，也可進行燃燒，另外，由於有害氣體或殘 留灰燼的產生較少，因此.對於環境污染的負擔較少。 (實施例） 第1圖的透視圖，係表示係第一實施例之揚聲器用振 315938 9 1322627 了 :=。該第一實施例的振動板！之外形約為圓錐 且母線為曲線的錐形振動板。外周係以別的構 一般稱之為自*邊）保持在框架（無圖示）的内側。 心部安襄音ϋ 3，並藉由擋板4將與該音圈 同樣保持在框架的内側。 女屐邛 第一實施例之揚_器用振動板！的構成係以：… ，丙婦樹脂做為非氣系合成樹脂；2)纖維素系粉末的，係 =用平均粒度200_的木粉1〇〇重量份以馬來酸酐㈣ 將表面㈣化處理的木粉；3)㈣苯醯過氧化物做為 機過氧化物，並將前述聚丙烯樹脂49.5 ^ …重量％、及苯酿過氧化物0.5重量二= =的^合材料；接著，4)將該混合材料以設㈣脂溫度 成型，而製得第1圖所示第一實施例之揚聲哭用 ί動板b第—實施例的尺寸為，直桎D為⑽贿，外周 k附近的厚度為綱#m，中心部附近的厚度同樣為2心 、而中〜部之音圈安裝孔的直徑d為20mm。另外，振動 板1的密度為UOgr/c·。 振動 在該第一實施例之振動板1的外周部上黏貼由薄發泡 尿，樹脂片構成之邊緣2以試做揚聲器（口徑12cm)，並 測定輸出曰壓強度及第二次讀波強度與第三次譜波強度的 頻率特性。將結果示於第2圖。在該圖中，特性（a)為基 本波強度’特性（b) $第二次諧波強度，另外，特性（e ) 為第一-人諧波強度。^ 了相互比較，在第3圖以形狀尺寸 大致相同的方式’分別表示由使用在聚丙烯樹脂將雲母30 315938 1322627 %混入材料而構成的比較例振動板之試做揚聲器的輸出音. 壓強度及第二次諧波強度與第三次譜波強度的頻率:性7 在該圖中，特性（a)為基本波強度’特性⑴為第二諧 波強度，此外，特性（c)為第三次諧波強度。 並分別以第4圖表示振動板材料之楊氏模量的溫度特 性，又以，第5圖表示tan 5的溫度特性。在第4圖及第5 . 圖中’特性（a)為第一實施例之振動板材料的溫度特性圖， 特性（b)為在本發明之振動板之混合材料中，將聚丙烯樹 脂二5重量％與處理完成之木粉35重量％做成接近申請專） 利耗圍之下限之混合率的模式混合所得之參考例振動板材 =溫度祕圖，特性⑴為由混人#母35%之聚丙稀 樹脂所構成之比較例振動板材料的溫度特性圖。在考量實 際使用的參考例情況，各個溫度特性的測定範圍係在〇乞 至50°C之範圍。 根據比較第2圖及第3圖所示諸特性的結果，在所謂 聽感影響最大之從5〇112到5KHz的頻率區域内，在各 揚聲器之音壓頻率特性雖無太大的差別，但第二次諧波強） 度在波锋的頻率中（約6〇Hz)，第一實施例振動板係更低 於比較例約7dB。另外，第三次諧波強度也同樣在波峰的 頻率數（40Hz )約低3dB。如上所述，所謂的高次諳波的 強度較低，係指在聽到再生音時的混濁感較少之意，並可 得清澈良好的再生音樂。根據經由3〇人的收聽者之第一實 %例振動板與比較例振動板的試聽實驗結果，30人中有23 名°忍為第一實施例振動板較優質，而認為比較例較優質者 11 315938 1322627 •有2名’認為同尊級者有5名。第一實施例振動板之高次 谐波的強度比比較例振動板更低的理由，認為是否因為起 -因於振動板材料之物性值的差，而使得振動板本身之彎曲 振動的強度較低所致。另外，基於第4圖及第5圖之揚氏 权量及tan<5之溫度特性圖，第一實施例之揚聲器用振動 板之特徵係具有所謂：即使溫度變化，因其物性值的變化 較少，所以由於振動板的剛性及共振抑制作用，即使大氣 /JDL度’憂尚或變低時的變動較小，因此，不會因季節使得再 _)生音質有多大變化。 以上说明有關應為代表本發明之實施例，但本發明並 .不僅限定在該等實施例構造者，具備本發明之前述構成要 件如：等效的材質性材料的變換使用，包含金屬模之加熱 方法之成型方法的更改等，且達成所謂本發明之目的，在 具有所謂以下效果之範圍内，可適當的更改並實施者。 (發明效果） 〉 以上所述本發明之揚聲器用振動板，因藉由纖維素系 J粉末的酯化表面處理的作用，增大對於合成樹脂分子的親 和力，因此可將纖維素系粉末以較大的比例進行混合，並 表示適合於振動板材料的密度、揚氏模量及較大的丈抓占。 以上所述諸物性值做成振動板所期望值之特徵係具有：將 該揚聲器用振動板使用於揚聲器並操作時，干預再生音質 較大的振動板之分開共振區域的峰值谷值（peak dp)的、 凹凸較小，且可知由於頻率特性接近平坦且歪曲程度也較 低，所以係如比較視聽試驗的結果，可得優質音色的再生 315938 12 1322627 由:振:板，之楊氏模量及1，個別溫 ;:” 於％境溫度的變化其音色安定，並具 有所明在任何料再生音f皆不變動的效果。 在製造領域中，藉由增域維素系粉末與合成 M月曰以子的親和力’混合材料之流動性極佳的情況下， =以射出成型，或壓出成型，亦可使岐用之樹脂用成 型機，因而不僅不需增加無謂的設備投資費用’且由於成 型條件也與一般不變’因.此關於生產上並無任何困難。此 外，因即使混合比例較大也可維持流動性，所以不會降低 產效率再者自於可使得金屬模或成型機之螺桿的磨 耗較少，所以設備的保固#用以個其他無機質系之填 充材的情形相較，具有可壓低成本之效果。 再者，關於本發明之製品，由於構成振動板的混合材 料係可再使用之非氯系合成樹脂，所以在廢棄之際，亦可 進订燃燒，又，由於有害氣體或殘留灰燼的產生較少，所 以也具有所謂對環境負擔較小的有用的效果。 【圖式簡單說明】 第1圖為第一實施例之揚聲器用振動板的透視圖。 第2圖為使用第一實施例之振動板的試做揚聲器之音 麼強度頻率特性圖及高次諧波強度頻率特性圖。 弟3圖為使用變更振動板材料之比較例振動板的試做 揚聲器之音屢強度頻率特性及高次諧波強度頻率特性圖。 第4圖係分別表示第一實施例、與比較例振動及參考 例振動板之振動板材料的楊氏模量之溫度變化的溫度特性 315938 13 1322627 圖。 第5圖係分別表示第一實施例、與比較例振動及參考 例振動板之振動板材料的tan 5之溫度變化的溫度特性 圖。 【主要元件符號說明】. 1 振動板 2 邊緣 3 音圈 4 擋板 14 315938[Technical Field] The present invention relates to a structure of a vibrating plate for a speaker, which is a component having a function of emitting sound waves in a sound pirate. [Prior Art] The conventional speaker is vibrated by an inductive detector that converts electrical signal energy into mechanical vibration energy and is driven by mechanical vibration energy output from the machine's inductive detector to emit The vibration plate of the acoustic energy (ac〇ustic energy) is composed of a conventional main component. In the figure i, when the vibration plate structure of the speaker is displayed in the form of a mold at the same time as the peripheral member, it is attached to the vibration plate! The voice coil 3 is attached to the center, and the flexible edge 2 is provided on the outer periphery of the vibrating plate i, or the baffle 4 having the same flexibility by the center of the vibrating plate, and the inner side of each frame (not shown) is maintained. The way to vibrate freely. Then, the voice coil 3 is inserted into the magnetic field of the magnetic circuit (not shown in the figure) to recognize the lightning. The yoke is driven by the center of the vibrating plate 1 of the voice coil 3 and is vibrated. Disclosure of the Invention (Problems to be Solved by the Invention) At this time, when the vibrating plate is vibrated in the same phase at various frequencies, the frequency characteristics of the sound in the general: medium-medium = flat, and the reproduction can be achieved.曰甴 据 据 据 据 据 据 据 据 据 据 据 据 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 Frequency 315938 5 Mutual::, It: Bu Zhou vibrates in the reverse phase', so that the emitted sound waves are tilted in the opposite direction, or it is, in a certain frequency, a peak is generated, which makes::= The resonance resonance type causes the vibration plate i to resonate separately. The phenomenon is: two: square:: _ vibration makes high heart true::: vibration:::: t, the vibration of the shape of the vibration plate and the material property of the knife opening vibration, especially: Sex and Young's modulus, that is, the mechanical value of the material gives the frequency characteristics or distortion The representative objects are clear, the second production is sizzling, and the direction of the physical properties is gradually becoming more and more suitable for the sinter material. Although the technical requirements are met, the frequency characteristics of ill f are better. Therefore, at the time of Yangsheng: Board::, it is necessary to solve the problem of "the need to spend too much effort on the development of vibrating plate materials". Material: * The purpose of this month is to solve the vibrations of the above-mentioned subject, and to focus on 'the wood with the added property to impart shape, and the wood with excellent physical properties. In addition to the synthetic resin and the cellulose-based powder material, the material of the lyophile-based material is developed as a hybrid material suitable for use in a sound-absorbing and smashing vibrating plate, and is provided at a low cost as a speaker vibrating plate having excellent acoustic performance and good productivity. In order to achieve the object, the structure of the speaker diaphragm of the present invention is formed by molding a non-gas-based synthetic resin and a mixture of cellulose-based powders having a particle size distribution of 5 " m to (4). [Embodiment] 315938 6 1322627 (Embodiment of the Invention) In order to solve the above problems, the movable (4) moving plate of the present invention (for convenience of explanation, the body of the vibrating plate is referred to as a vibration between the human and the femoral condyles) Plate 1) system: a mixture of fine-grained, cellulose-based powders having a particle size distribution of 5 (four) to 500 " m (desired to 400 " m) = t: non-gas-based synthetic resin may be thermosetting synthetic resin or heat Plastic: : Any of the resins, but synthetic resins such as polyolefin, polystyrene, etc. are used as non-chlorinated synthetic resins, especially in the temple: polypropylene resin It is excellent in terms of mechanical properties, ease of processing, and use of the environment: prevention of dyeing. Cellulose powder = Use: powder of wood powder, shredded paper, pulp powder, cotton wool powder, bamboo powder, kenaf, =., =, etc. The cellulose-based powder is subjected to a surface treatment, and the purpose thereof is to affinity-bond the surface of the fiber-based material to the synthetic resin. Fiber = the mixing ratio of the powder to the synthetic resin, which is composed of 3 to 36% by weight based on the mixed material. It is more preferable that the ratio of the weight % is suitably 40% by weight to 6% by weight. When the mixing ratio of the end of the cell is too large, the vulnerability may occur and it becomes unsuitable for the use. ▲ The surface treatment to be carried out in accordance with the requirements of the cellulose-based powder is, for example, a polybasic acid liver such as rifamycin or the like, which is a cellulose-based powder material. By mixing the esterified cellulose-based powder material with a synthetic resin and a trace amount of an organic peroxide such as benzene ketone peroxide, the affinity between the cellulose-based powder and the synthetic resin is increased, and not only Fiber 315938 7 , the mixing ratio of the prime powder 拎 a large amount of cellulose-based powder 7 'when mixing the two materials', even if mixed into the manufacturing and easy to irt &, will not reduce the fluidity, and can be exchanged = Good formability. In addition, when the fiber materials f, t and, for example, mixed, only a large mixing ratio can be obtained, and in the coating of the product: the component t is made of a synthetic resin of poly-smoke, it can also be only At the time of the station, it can be directly coated or bonded by surface treatment by simple mechanical grinding. Of course, 'the same shape of the iso-ion irradiation:: at the same place: must be more able to make the adhesion or the stability of the coating film;: the substrate treatment, then: the cellulose-based powder mixed non-gas-based synthetic resin 敎Two = 2 may be a thermosetting synthetic resin. However, from the difficulty of molding, the basic physical properties of the material, the recyclability of the material, the disposal of the material, the material 2 = the synthetic resin of the poly-hydrocarbon, especially the one of the polypropylene: in the formation of the crucible, but of course In the molding method for forming a glaze, a molding machine for a general-purpose resin can be used. The molding temperature is in the range of the war-to-gift degree. In addition, for example, eucalyptus powder is used as the mixed cellulose-based powder, and 2, if the molding temperature is controlled within the above-mentioned range, the hibiscus of the product can be maintained. Performance. At this time, the cellulose-based powder to be used may be emphasized or flavored by a synthetic fragrance. In the speaker diaphragm of the present invention, since the affinity for the molecules of the synthetic resin is increased by the surface treatment of the mixed cellulose powder, the mixing can be carried out at a large ratio with respect to the synthetic wax. In addition, the proportion of the iron-velocene powder is larger than that of the vibrating plate. Just 315938 8 1322627 Π When the vibrating plate 1 is vibrated separately, the internal friction of the vibrating plate and the mixed synthetic tree are mixed. = A larger value for the body. The high Young's mode of the diaphragm 1 and the increase of _ are caused by the fact that the vibration of the speaker is not easily generated, and the frequency characteristics are improved, and the vibration plate of the resonance is separated. The 10ijf curved deformation is not linearly curved or the degree of the heart is curved and has a function of preventing deterioration of the reproduced sound quality. Further, by increasing the molecular affinity of the cellulose-based powder and the synthetic resin, the fluidity of the mixed material can be formed to a thickness of from G.lmm to about 5 mm (4). In the case of the injection method, the molding machine for general use of the resin can be used. Therefore, not only does it not cause excessive cost in equipment investment, but also the molding conditions are the same as in the general case, so There is no difficulty in production. In addition, since the fluidity can be maintained when the mixing ratio is large, the production capacity is not lowered, and when the filler of other inorganic beryllium is used, the cylinder or the screw of the metal mold can be used. Less wear, so it can reduce the warranty cost of the equipment. In the vibrating plate 1 of the present invention, the mixed material constituting the main body of the vibrating plate is a recyclable material, and since the non-gas-based synthetic resin is used, combustion can be performed even when discarded, and harmful gases are generated. Or the residual ash is produced less, so the burden on environmental pollution is less. (Embodiment) The perspective view of Fig. 1 shows the vibration of the speaker of the first embodiment 315938 9 1322627 :=. The vibrating plate of the first embodiment! A cone-shaped diaphragm that is shaped like a cone and has a curved bus bar. The outer circumference is generally referred to as a self-side and is held inside the frame (not shown). The heart is placed on the inside of the frame by the baffle 4 and by the baffle 4. Nvwa The first embodiment of the Yang _ device with a vibration plate! The composition is: ..., B-resin resin as a non-gas-based synthetic resin; 2) Cellulose-based powder, system = 1 part by weight of wood powder with an average particle size of 200_ to maleic anhydride (four) surface (four) Treated wood flour; 3) (4) benzoquinone peroxide as a machine peroxide, and the aforementioned polypropylene resin 49.5 ^ ...% by weight, and benzene brewing peroxide 0.5 weight two = = ^ material; then, 4) The mixed material is molded at a temperature of (4), and the size of the first embodiment is as shown in Fig. 1. The size of the embodiment is: (10) bribe, outer circumference The thickness near k is the outline #m, the thickness near the center portion is also 2 cores, and the diameter d of the voice coil mounting hole of the middle portion is 20 mm. Further, the density of the vibrating plate 1 is UOgr/c·. Vibration was applied to the outer peripheral portion of the vibrating plate 1 of the first embodiment by a thin foamed urine, and the edge 2 of the resin sheet was used to test the speaker (caliber 12 cm), and the output compressive strength and the second read wave intensity were measured. Frequency characteristics with the intensity of the third spectral wave. The results are shown in Fig. 2. In the figure, the characteristic (a) is the fundamental wave intensity ' characteristic (b) $ second harmonic intensity, and the characteristic (e) is the first-person harmonic intensity. ^Compared with each other, in Fig. 3, the output sound of the comparative speaker consisting of a comparative vibration plate composed of a mica 30 315938 1322627% mixed with a polypropylene resin in a manner of substantially the same shape and size. And the frequency of the second harmonic intensity and the third spectral intensity: Sexuality 7 In the figure, the characteristic (a) is the fundamental wave intensity 'characteristic (1) is the second harmonic intensity, and the characteristic (c) is the Third harmonic intensity. The temperature characteristics of the Young's modulus of the vibrating plate material are shown in Fig. 4, and the temperature characteristics of tan 5 are shown in Fig. 5. In Fig. 4 and Fig. 5, 'characteristic (a) is a temperature characteristic diagram of the vibrating plate material of the first embodiment, and characteristic (b) is a mixed material of the vibrating plate of the present invention, which is a polypropylene resin 5% by weight and 35% by weight of the finished wood powder are made close to the application mode). The reference example of the mixing ratio of the lower limit of the mixture is the vibration plate = temperature secret map, the characteristic (1) is mixed by #母35% A temperature characteristic diagram of a vibrating plate material of a comparative example composed of a polypropylene resin. In the case of the reference example actually used, the measurement range of each temperature characteristic is in the range of 〇乞 to 50 °C. According to the results of comparing the characteristics shown in Fig. 2 and Fig. 3, in the frequency region from 5 〇 112 to 5 kHz where the influence of the sense of hearing is the greatest, the sound pressure frequency characteristics of the respective speakers are not greatly different, but The second harmonic intensity is at the frequency of the wave front (about 6 Hz), and the vibration plate of the first embodiment is about 7 dB lower than the comparative example. In addition, the third harmonic intensity is also about 3 dB lower than the peak frequency (40 Hz). As described above, the so-called high-order chopping has a low intensity, which means that the turbidity is small when the reproduced sound is heard, and the crystal-cleared music can be obtained. According to the results of the audition experiment of the first real-life vibrating plate and the comparative vibrating plate of the listener through 3 ,, 23 out of 30 people are for the first embodiment, the vibrating plate is better, and the comparative example is better. 11 315938 1322627 • There are 2 people who think that there are 5 people in the same class. The reason why the intensity of the higher harmonics of the vibrating plate of the first embodiment is lower than that of the vibrating plate of the comparative example is whether or not the intensity of the bending vibration of the vibrating plate itself is higher due to the difference in the physical property values of the vibrating plate material. Low due to. Further, based on the Young's weight of the fourth and fifth figures and the temperature characteristic diagram of tan < 5, the speaker diaphragm of the first embodiment has a characteristic that the change in the physical property value is caused even if the temperature changes. Since there is little, the vibration and the resonance suppression effect of the diaphragm are small, and even if the air/JDL degree is less or less, the fluctuation is small. Therefore, the sound quality of the sound is not changed by the season. The above description is intended to represent an embodiment of the present invention, but the present invention is not limited to those of the embodiments, and includes the above-described constituent elements of the present invention, such as an equivalent material material, including a metal mold. The modification of the molding method of the heating method, etc., achieves the object of the present invention, and can be appropriately modified and implemented within the range having the effect described below. (Effect of the Invention) The speaker diaphragm of the present invention has an affinity for the synthetic resin molecule by the action of the esterification surface treatment of the cellulose-based J powder, so that the cellulose-based powder can be compared. The large proportions are mixed and indicate the density, Young's modulus and large grip of the material suitable for the vibrating plate. The above-mentioned physical property values are characterized by the desired value of the vibrating plate. When the speaker vibrating plate is used in the speaker and operated, the peak value of the separated resonance region of the vibrating plate having a large sound quality is interfered with (peak dp). The bumps are small, and it is known that the frequency characteristics are close to flat and the degree of distortion is low. Therefore, if the results of the audiovisual test are compared, the quality of the sound can be reproduced 315938 12 1322627 by: vibration: plate, the Young's modulus and 1, individual temperature;:" The change in the temperature of the ambient temperature is stable, and has the effect that the reproduction sound f does not change in any material. In the field of manufacturing, by increasing the vitamins and synthesizing M曰 的 的 affinity 'When the fluidity of the mixed material is excellent, = injection molding, or extrusion molding, can also use the resin for the molding machine, so not only does not need to increase the unnecessary equipment investment costs' and Since the molding conditions are also the same as the general one, there is no difficulty in production. In addition, since the liquidity can be maintained even if the mixing ratio is large, the productivity is not lowered. The screw of the metal mold or the molding machine can be made less worn, so that the warranty of the equipment is compared with the case of the filler of other inorganic materials, and the effect of the low pressure is low. The mixed material constituting the vibrating plate is a non-chlorinated synthetic resin that can be reused. Therefore, when it is discarded, the combustion can be ordered, and since the generation of harmful gas or residual ash is less, there is a so-called environmental burden. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a speaker diaphragm of the first embodiment. Fig. 2 is a diagram showing the intensity of the speaker using the diaphragm of the first embodiment. The characteristic diagram and the frequency characteristic diagram of the higher harmonic intensity. The third diagram shows the frequency intensity characteristics and the frequency characteristic of the harmonic intensity of the test speaker using the diaphragm of the comparative example using the vibrating plate material. The temperature characteristic 315938 13 1322627 of the first embodiment, the vibration of the vibration of the vibration plate material of the first embodiment, the vibration of the comparative example, and the vibration plate of the reference example is shown. The temperature characteristic diagrams of the temperature change of tan 5 of the vibration plate material of the first embodiment, the vibration of the comparative example, and the vibration plate of the reference example are respectively shown. [Description of main component symbols]. 1 Vibrating plate 2 Edge 3 Voice coil 4 Baffle 14 315938