201108759 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及-種定心支片及❹該定心支片的揚聲器。 【先前技術] [0002] 揚聲器係將電能轉化為機械能的電子元件，應用廣泛， 如電話、移動通訊終端、電腦、雷鉬 冤視機、盒式磁帶、聲 音設備及汽車等。 [0003] 〇 先前技術中的揚聲器大部分换用费& I刀妹用電動式揚聲器，該揚聲 器-般包括-振動臈、一音圈、—音圏骨架、一定心支 片及-磁路系統等。該揚聲器通過音圈在磁場下的運動 ，推動振動膜振動並發出聲波。.該揚聲器中的定心支片 可緩衝振動膜。定心支片用於.支持音圈及振動膜的結合 部位’碟保其垂直而不歪斜。定心支片可使音圈在磁路 系統中的磁隙中自由地上下移動而不作橫向移動確保 音圈不與磁路系統中的導磁板相碰。另外K片還 可防止外部灰塵等落至磁隙，避免造成灰塵與音圈摩擦 ，而使揚聲器產生異常聲音。 [0004]定心支片通常要求軸向彈性好，徑向強度大。另外，定 心支片在揚聲器發聲的過程中會做大量的運動，故，定 心支片還應具有良好的对疲勞性，才能確保其使用壽命 較長。故，用於製備定心支片的材料應該具有良好的彈 性、強度及耐疲勞性。然而，先前的定心支片通常由聚 合物、金屬或紙等材料組成，其轴向彈性及徑向強度不 夠，造成定心支片不能適應音圈的諧振動，從而影響揚 聲器的發聲效果。此外，先前的定心支 很容易在反復 098127639 表單编號A0101 第3頁/共26頁 0982047407-0 201108759 振動中疲勞變形，從而產生沿揚聲器轴向的塌陷，使得 揚聲器的使用壽命縮短，音質變差。故，需要研製一種 軸向彈性好、徑向強度大、且财疲勞的定心支片。 【發明内容】 [0005] 有鑒於此，確有必要提供一種具有良好彈性、強度及耐 疲勞性的定心支片及使用該定心支片的揚聲器。 [0006] 一種定心支片，其中，所述定心支片包括一紙基體以及 分散於該紙基體中的複數個奈米碳管。 [0007] 一種定心支片，其中，所述定心支片包括一奈米碳管紙 組成的片狀結構，且所述片狀結構的中央處具有一通孔 〇 [0008] 一種揚聲器，其包括：一音圈；一音圈骨架，所述音圈 設置於該音圈骨架上；一振動膜，該振動膜與所述音圈 骨架一端相連接；一定心支片，該定心支片套設於所述 音圈骨架上；及一磁場系統，該磁場系統具有一磁場間 隙，所述音圈設置於所述磁場間隙中；其中，所述定心 支片包括一紙基體以及分散於該紙基體中的複數個奈米 碳管。 [0009] 一種揚聲器，其包括：一音圈；一音圈骨架，所述音圈 設置於該音圈骨架上；一振動膜，該振動膜與所述音圈 骨架一端相連接；一定心支片，該定心支片套設於所述 音圈骨架上；及一磁場系統，該磁場系統具有一磁場間 隙，所述音圈設置於所述磁場間隙中；其中，所述定心 支片包括一奈米碳管紙組成的片狀結構，且所述片狀結 098127639 表單編號A0101 第4頁/共26頁 0982047407-0 201108759 構的中央處具有一通孔。 [0010] ο [0011] Ο [0012] [0013] 098127639 與先前技術相比較，本發明提供的定心支片及使用該定 心支片的揚聲器具有以下優點：第一，由於奈米碳管具 有優異的強度，故，將奈米碳管分散於紙基體中，可提 高紙基體的強度，從而使由紙基體組成的定心支片更好 地起到緩衝及定位的作用。第二，由於奈米碳管具有良 好的柔韌性，將奈米碳管分散於定心支片的基體中，可 提高基體的耐疲勞性，從而使定心支片在反復振動中不 容易疲勞變形，進而不容易產生沿揚聲器軸向的塌陷， 從而有利於提高採用該定心支片的揚聲器的使用壽命。 第三，由於奈米碳管具有較小的密度，將奈米碳管分散 於定心支片的基體中，在維持甚至提高定心支片的強度 的同時可減小定心支片的重量，從而減輕揚聲器的重量 。尤其在微型揚聲器中，該效果更加明顯。 【實施方式】 下面將結合附圖對本發明實施例提供的定心支片及使用 該定心支片的揚聲器作進一步的詳細說明。 請參閱圖1及圖2，本發明第一實施例提供一種定心支片 100。所述定心支片100包括一紙基體106以及分散於該 紙基體106中的複數個奈米碳管108。該紙基體106以及 分散於該紙基體106中的複數個奈米碳管108形成一奈米 碳管紙。所述定心支片100可為由該奈米碳管紙組成的一 片狀結構。 所述紙基體106包括各種纖維材料以及添加材料。所述纖 維材料可包括木纖維、碳纖維、玻璃纖維、尼龍纖維、 表單編號Α0101 第5頁/共26頁 0982047407-0 201108759 聚丙烯纖維、棉纖維以及竹纖維中的一種或多種。所述 添加材料可包括半纖維素、木素、樹脂、色素、果膠及 灰分等物質中的一種或多種。應當指出的係，其他任何 雖未記載於本申請的造紙用的纖維材料以及添加材料， 採用本發明構思用於定心支片100的，皆應在本發明保護 範圍之内。 [0014] 所述奈米碳管108均勻分散於紙基體106中。進一步，所 述奈米碳管108表面可帶有功能團。該功能團包括羧基 (-COOH)、羥基（-OH)、醛基（-CHO)以及氨基（-NH2)等 中的一種或多種。該功能團可形成於奈米碳管108的管壁 上。可理解，該功能團為親水性功能困，使奈米碳管108 在泡料過程中可更好地分散於紙漿中。所述奈米碳管108 可為單壁奈米碳管、雙壁奈米碳管及多壁奈米碳管中的 一種或其任意組合。其中，所述單壁奈米碳管的直徑為 0.5奈米〜50奈米，雙壁奈米碳管的直徑為1.0奈米〜50奈 米，多壁奈米碳管的直徑為1. 5奈米〜50奈米。所述奈米 碳管108的長度不限。優選地，所述奈米碳管108的長度 大於20 0微米。可理解，採用長度大於200微米的奈米碳 管108可有效發揮奈米碳管108的增強作用，提高定心支 片100的強度。本實施例中，所述奈米碳管108的長度為 200微米〜900微米。 [0015] 所述紙基體106在整個定心支片100中的質量百分比含量 為10%〜99. 9%，所述奈米碳管108在整個定心支片100中 的質量百分比含量為0. 1%〜90%。優選地，紙基體106的 質量百分比含量為60%~90%。奈米碳管108的質量百分比 098127639 表單編號A0101 第6頁/共26頁 0982047407-0 201108759 ❹ 含量為10%~40%。例如：所述紙基體106的材料為木纖維 與果膠，所述紙基赠106在整個定心支片100中的質量百 分比含量可為70%，所述奈米碳管108在整個定心支片 100中的質量百分比含量可為3〇% ;所述紙基體的材 料為碳纖維與樹脂，所述紙基體106在整個定心支片100 中的質量百分比含量町為80%，所述奈米碳管108在整個 定心支片100中的質量百分比含量可為20% ;所述紙基體 106的材料為聚丙烯纖維與果勝’所述紙基體106在整個 定心支片100中的質量百分比含量可為90% ’所述奈米碳 管108在整個定心支片100中的質量百分比含量可為10% 。本實施例中，所述紙基體為木織維’所述紙基體 10 6在整個定心支片100中的質量百分比含量為85%，所 述奈米碳管108在整個定心支片1 〇〇中的質量百分比含量 町為15%。 [0016] Ο 所述定心支片ι〇0的形狀與大小不限，可根據實際需要製 - . 1 備。所述定心支片1〇0可具有振紋、且該定心支片1〇〇的 幾何形狀包括鋸齒形、波浪形或漸開線形等。本實施例 中，所述定心支片1〇〇為一斷面呈波峰與波谷交替的波浪 形圓瓖片體，且該定心支片1〇〇的中央處具有一通孔102 。戶斤述通孔102的大小及形狀與揚聲器中的音圈骨架的大 小相對應’以便組裝揚聲器時可使音圈骨架穿過該通孔 ^所述定心支片100可通過熱壓的方式形成。所述定 心支片100的厚度為大於等於1微米且小於等於2毫米。 進/梦’所述定心支片100上可設置有複數個導線（圖未 承）》所述導線用來用來向音圈提供電流，從而使音圈 098127639 表弟痴號Α0101 第7頁/共26頁 0982047407-0 [0017] 201108759 在磁場中運動。所述導線通過黏結劑固定於該定心支片 100表面。將導線固定於定心支片100上，可減缓振動過 程中導線受到的拉力，從而使導線與音圈等元件的連接 處不易斷開。 [0018] 請參見圖3，本發明進一步提供一種所述定心支片100的 製備方法，其具體包括以下步驟： [0019] 步驟一：打漿。 [0020] 將造紙用的纖維材料放入盛有水的打漿機内，進行打漿 細化得到紙漿。所述打漿細化的時間可大於5小時。本實 施例中，將20克的木纖維與1 500克的水放入打漿機内打 漿細化10小時。可理解，打漿前還可採用氫氧化鈉及硫 化鈉混合液對纖維材料進行蒸煮》在蒸煮過程中，因為 藥液作用比較緩和，纖維不會受強烈侵蝕，故強韌有力 ，所製成的紙的耐折、耐破及耐撕裂強度極好。進一步 ，本實施例中還可將打漿細化後的紙漿放入一密閉容器 内施加一高壓，然後瞬間打開密閉容器使其降至常壓， 壓力急劇變化可促使紙漿内的纖維裂解細化。 [0021] 步驟二：泡料。 [0022] 將打漿細化後的紙漿放入一泡料池中，加入奈米碳管以 及添加材料後，浸泡一段時間。 [0023] 所述奈米碳管可通過電弧放電法、鐳射蒸發法或者化學 氣相沈積法等方法製備。本實施例中，通過化學氣相沈 積法生長奈米碳管陣列，然後將該奈米碳管陣列中的奈 米碳管刮落。由於奈米碳管陣列中奈米碳管定向排列而 098127639 表單編號A0101 第8頁/共26頁 0982047407-0 201108759 沒有相互纏繞，故，有利於奈米碳管在溶液中分散。本 實施例中，將3. 53克的奈米碳管加入到打漿細化後的紙 楽·中浸泡1天~ 3天。 [0024] 另外，在將奈米碳管加入到聚料中之前，可進一步包括 一對上述奈米碳管提純的步驟。所述提純奈米碳管的方 法包括以下步驟：在空氣流中加熱奈米碳管以除去無定 型碳；用濃酸浸泡該奈米碳管以除去金屬催化劑；以及 反復洗滌過濾得到提純的奈米碳管。 〇 剛 本實施例中，將奈米碳管放在35(TC的爐中，在空氣流中 加熱2小時以除去奈米碳管中殘留的無定型碳；將奈米碳 管浸泡在36%的濃鹽酸中約1天，除去奈米碳管中殘留的 金屬催化劑；將鹽酸浸泡後的奈米碳管進行離心分離； 將分離所得的奈米碳管沉澱物用去離子水反復洗滌；再 將洗滌後的奈米碳管沉澱物經由0. 2ππη孔徑的聚四氟乙烯 膜過濾，得到提純的奈米碳管。 [0026] ❹ 提純的目的主要係除去奈米碳管中殘留的無定型碳及金 ► 屬催化劑等雜質。通過提純，可得到純淨的奈米碳管。 [0027] 進一步，將奈米碳管提純之後，還包括一對奈米碳管功 能化處理的步驟。所述對奈米碳管功能化處理的方法包 括以下步驟：將提純的奈米碳管在強酸中回流以及清洗 過濾得到帶有功能團的奈米碳管。 [0028] 所述強酸包括濃硫酸、濃硝酸或濃鹽酸中的一種或幾種 。功能化處理的目的係使奈米碳管表面引入功能團。按 上述功能化方法處理後的奈米碳管，在管壁上引入親水 098127639 表單編號A0101 第9頁/共26頁 0982047407-0 201108759 性的功能團。所述功能團包括羧基（_C00H)、羥基（_0H) 、越基（-CH0)以及氨基（―·2)等中的一種或多種。在奈 米碳管管壁上引入親水性的功能團後的奈米碳管在泡料 過程中可均勻分散於紙漿中。 [0029] 本實施例中，將提純後的奈米碳管放置於5〇〇mi圓底燒瓶 中’量取150ml濃硫酸及濃硝酸混合液（濃硫酸和濃硝酸 的體積為3:1)倒入圓底燒瓶内，回流反應4小時〜20小時 。該回流反應過程使奈米碳管表面帶有官能團。然後， •將反應後的液體倒入水中，再經濾紙過濾後得到一奈米 碳管濾餅。最後，用去離子水將該奈米碳管濾餅洗至邱 值為中性，得到羧基化的奈米碳管。 ' [0030] 步驟三：抄紙》 τ .201108759 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a centering piece and a speaker for the centering piece. [Prior Art] [0002] A speaker is an electronic component that converts electrical energy into mechanical energy and is widely used, such as telephones, mobile communication terminals, computers, Thunderbolt, cassette tapes, sound equipment, and automobiles. [0003] The speaker in the prior art mostly replaces the fee & I knife with an electric speaker, the speaker generally includes - vibrating cymbal, a voice coil, - a skeleton, a centring and a magnetic circuit System, etc. The speaker pushes the diaphragm to vibrate and emit sound waves through the movement of the voice coil under the magnetic field. The centering piece in the speaker cushions the diaphragm. The centering piece is used to support the combination of the voice coil and the diaphragm. The disc is vertical and not skewed. The centering tab allows the voice coil to freely move up and down in the magnetic gap in the magnetic circuit system without lateral movement to ensure that the voice coil does not collide with the magnetically permeable plate in the magnetic circuit system. In addition, the K-piece prevents external dust and the like from falling into the magnetic gap, preventing the dust from colliding with the voice coil, and causing the speaker to produce an abnormal sound. [0004] Centering struts generally require good axial elasticity and high radial strength. In addition, the centering piece will do a lot of movement during the sounding of the speaker. Therefore, the centering piece should also have good fatigue to ensure a long service life. Therefore, the material used to prepare the centering piece should have good elasticity, strength and fatigue resistance. However, the previous centering piece is usually composed of a material such as polymer, metal or paper, and its axial elasticity and radial strength are insufficient, so that the centering piece cannot adapt to the vibration of the voice coil, thereby affecting the sounding effect of the speaker. In addition, the previous centering branch is easily fatigue-deformed in the vibration of 098127639 Form No. A0101, Page 3 of 26, 0982047407-0 201108759, resulting in collapse along the axial direction of the speaker, resulting in shortened speaker life and improved sound quality. difference. Therefore, it is necessary to develop a centering piece with good axial elasticity, high radial strength, and financial fatigue. SUMMARY OF THE INVENTION [0005] In view of the above, it is indeed necessary to provide a centering piece having good elasticity, strength, and fatigue resistance and a speaker using the same. A centering support sheet, wherein the centering support piece comprises a paper base and a plurality of carbon nanotubes dispersed in the paper base. [0007] A centering support piece, wherein the centering support piece comprises a sheet-like structure composed of a carbon nanotube paper, and the center of the sheet-like structure has a through hole 0008 [0008] a speaker The invention comprises: a voice coil; a voice coil skeleton, the voice coil is disposed on the voice coil bobbin; a vibrating membrane, the vibrating membrane is connected with one end of the voice coil bobbin; and the concentric core piece, the centring support piece Nested on the voice coil bobbin; and a magnetic field system having a magnetic field gap, the voice coil being disposed in the magnetic field gap; wherein the centering piece includes a paper substrate and dispersed a plurality of carbon nanotubes in the paper matrix. [0009] A speaker comprising: a voice coil; a voice coil bobbin, the voice coil is disposed on the voice coil bobbin; a vibrating membrane, the vibrating membrane is connected to one end of the voice coil bobbin; a centering piece disposed on the voice coil bobbin; and a magnetic field system having a magnetic field gap, the voice coil being disposed in the magnetic field gap; wherein the centering piece A sheet-like structure consisting of a carbon nanotube paper is included, and the sheet-like knot 098127639 has a through hole at the center of Form No. A0101, No. 4/26 pages 0982047407-0 201108759. [0011] [0011] [0013] [0013] 098127639 Compared with the prior art, the centering support provided by the present invention and the speaker using the same have the following advantages: first, due to the carbon nanotube It has excellent strength. Therefore, dispersing the carbon nanotubes in the paper base can increase the strength of the paper substrate, so that the centering pieces composed of the paper substrate can better serve as a buffer and a positioning. Secondly, because the carbon nanotubes have good flexibility, the carbon nanotubes are dispersed in the matrix of the centering piece, which can improve the fatigue resistance of the matrix, so that the centering piece is not easy to fatigue in repeated vibrations. The deformation, and thus the collapse of the axial direction of the speaker, is not easy to occur, thereby contributing to the improvement of the service life of the speaker using the centering piece. Third, since the carbon nanotubes have a small density, the carbon nanotubes are dispersed in the matrix of the centering piece, and the weight of the centering piece can be reduced while maintaining or even increasing the strength of the centering piece. To reduce the weight of the speaker. This effect is more pronounced especially in microspeakers. [Embodiment] Hereinafter, a centering piece provided by an embodiment of the present invention and a speaker using the centering piece will be further described in detail with reference to the accompanying drawings. Referring to Figures 1 and 2, a first embodiment of the present invention provides a centering support 100. The centering support 100 includes a paper substrate 106 and a plurality of carbon nanotubes 108 dispersed in the paper substrate 106. The paper substrate 106 and a plurality of carbon nanotubes 108 dispersed in the paper substrate 106 form a carbon nanotube paper. The centering piece 100 may be a sheet-like structure composed of the carbon nanotube paper. The paper substrate 106 includes various fibrous materials as well as additive materials. The fibrous material may comprise wood fiber, carbon fiber, glass fiber, nylon fiber, form number Α0101, page 5 of 26, 0982047407-0 201108759 one or more of polypropylene fiber, cotton fiber, and bamboo fiber. The additive material may include one or more of hemicellulose, lignin, resin, pigment, pectin, and ash. It should be noted that any other fibrous material for papermaking, which is not described in the present application, and the additive material, which are used in the centering support 100 of the present invention, are all within the scope of the present invention. [0014] The carbon nanotubes 108 are uniformly dispersed in the paper substrate 106. Further, the surface of the carbon nanotube 108 may have a functional group. The functional group includes one or more of a carboxyl group (-COOH), a hydroxyl group (-OH), an aldehyde group (-CHO), and an amino group (-NH2). This functional group can be formed on the wall of the carbon nanotube 108. It can be understood that the functional group is trapped in a hydrophilic function, so that the carbon nanotubes 108 can be better dispersed in the pulp during the foaming process. The carbon nanotubes 108 may be one of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube, or any combination thereof. The diameter of the multi-walled carbon nanotubes is 1. 5, the diameter of the double-walled carbon nanotubes is 1.0 nm to 50 nm, and the diameter of the multi-walled carbon nanotubes is 1.5. Nano ~ 50 nm. The length of the carbon nanotube 108 is not limited. Preferably, the length of the carbon nanotubes 108 is greater than 20 microns. It can be understood that the use of the carbon nanotubes 108 having a length of more than 200 μm can effectively exert the reinforcing effect of the carbon nanotubes 108 and increase the strength of the centering fins 100. In this embodiment, the carbon nanotubes 108 have a length of 200 μm to 900 μm. [0015] The mass percentage of the paper substrate 106 in the centering support 100 is 10% to 99.9%, and the mass percentage of the carbon nanotubes 108 in the entire centering piece 100 is 0. . 1%~90%. Preferably, the paper base 106 has a mass percentage of 60% to 90%. Percentage of carbon nanotubes 108 098127639 Form No. A0101 Page 6 of 26 0982047407-0 201108759 ❹ The content is 10%~40%. For example, the material of the paper substrate 106 is wood fiber and pectin, and the paper base 106 may have a mass percentage of 70% in the entire centering piece 100, and the carbon nanotubes 108 are centered. The mass percentage content in the support sheet 100 may be 3〇%; the material of the paper base material is carbon fiber and resin, and the mass percentage content of the paper base 106 in the entire centering support piece 100 is 80%. The mass percentage of the carbon nanotube 108 in the entire centering piece 100 may be 20%; the material of the paper substrate 106 is polypropylene fiber and the fruit is in the entire centering piece 100 of the paper substrate 106. The mass percentage content may be 90%. The mass percentage of the carbon nanotubes 108 in the entire centering piece 100 may be 10%. In this embodiment, the paper substrate is a wood weave, and the paper substrate 106 has a mass percentage of 85% in the entire centering piece 100, and the carbon nanotubes 108 are in the centering piece 1 The percentage of quality in the sputum is 15%. [0016] Ο The shape and size of the centering piece ι〇0 are not limited, and can be prepared according to actual needs. The centering piece 1〇0 may have a vibration pattern, and the geometry of the centering piece 1〇〇 includes a zigzag shape, a wave shape, an involute shape, or the like. In the embodiment, the centering piece 1〇〇 is a wave-shaped circular piece having a cross section alternated with a wave and a valley, and the centering piece 1 has a through hole 102 at the center. The size and shape of the through hole 102 correspond to the size of the voice coil bobbin in the speaker. In order to assemble the speaker, the voice coil bobbin can pass through the through hole. The centering piece 100 can be hot pressed. form. The centering piece 100 has a thickness of 1 μm or more and 2 mm or less. The centering piece 100 can be provided with a plurality of wires (not shown). The wire is used to supply current to the voice coil, so that the voice coil 098127639 is indifferent to the Α 0101 page 7 / A total of 26 pages 0982047407-0 [0017] 201108759 Movement in a magnetic field. The wire is fixed to the surface of the centering piece 100 by a bonding agent. Fixing the wire to the centering piece 100 can reduce the tension applied to the wire during the vibration process, so that the connection between the wire and the component such as the voice coil is not easily broken. [0018] Referring to FIG. 3, the present invention further provides a method for preparing the centering support piece 100, which specifically includes the following steps: [0019] Step 1: Beating. [0020] The fibrous material for papermaking is placed in a beater containing water and refined by beating to obtain a pulp. The beating refining time may be greater than 5 hours. In this embodiment, 20 grams of wood fiber and 1,500 grams of water were placed in a beater for slurry refining for 10 hours. It can be understood that the fiber material can be cooked by using a mixture of sodium hydroxide and sodium sulfide before beating. In the cooking process, since the liquid is relatively mild, the fiber is not strongly eroded, so it is strong and strong, and is made. The paper is excellent in folding resistance, breakage resistance and tear resistance. Further, in the present embodiment, the pulp after refining and refining can be placed in a closed container to apply a high pressure, and then the closed container can be instantaneously opened to a normal pressure, and the sudden change in pressure can promote the cracking and refining of the fibers in the pulp. [0021] Step two: a bubble. [0022] The pulp which has been beaten and refined is placed in a bubble pool, and after adding the carbon nanotubes and adding materials, it is immersed for a while. [0023] The carbon nanotubes can be prepared by an arc discharge method, a laser evaporation method, or a chemical vapor deposition method. In this embodiment, the carbon nanotube array is grown by chemical vapor deposition, and then the carbon nanotubes in the carbon nanotube array are scraped off. Due to the orientation of the carbon nanotubes in the carbon nanotube array, 098127639 Form No. A0101 Page 8 of 26 0982047407-0 201108759 There is no intertwining, so it is beneficial to disperse the carbon nanotubes in solution. In this embodiment, 3.53 g of carbon nanotubes are added to the pulped and refined paper for 1 day to 3 days. [0024] In addition, a step of purifying a pair of the above carbon nanotubes may be further included before the carbon nanotubes are added to the polymer. The method for purifying a carbon nanotube includes the steps of: heating a carbon nanotube in an air stream to remove amorphous carbon; soaking the carbon nanotube with a concentrated acid to remove a metal catalyst; and repeatedly washing and filtering to obtain a purified naphthalene Carbon tube. In the present example, the carbon nanotubes were placed in a 35 (TC furnace, heated in an air stream for 2 hours to remove residual amorphous carbon in the carbon nanotubes; soak the carbon nanotubes at 36%) In about 1 day in concentrated hydrochloric acid, the metal catalyst remaining in the carbon nanotubes is removed; the carbon nanotubes immersed in hydrochloric acid are centrifuged; and the separated carbon nanotube precipitates are repeatedly washed with deionized water; The washed carbon nanotube precipitate is filtered through a 0.24πη pore size polytetrafluoroethylene membrane to obtain a purified carbon nanotube. [0026] The purpose of the purification is mainly to remove the amorphous form remaining in the carbon nanotube. Carbon and gold ► are impurities such as catalysts. Purified carbon nanotubes can be obtained by purification. [0027] Further, after purifying the carbon nanotubes, a step of functionalizing a pair of carbon nanotubes is further included. The method for functionalizing the carbon nanotubes comprises the steps of: refluxing the purified carbon nanotubes in a strong acid and washing and filtering to obtain a carbon nanotube with a functional group. [0028] The strong acid includes concentrated sulfuric acid, rich One of nitric acid or concentrated hydrochloric acid or The purpose of functionalization is to introduce a functional group on the surface of the carbon nanotube. The carbon nanotubes treated by the above functionalization method introduce hydrophilic 098127639 on the tube wall. Form No. A0101 Page 9 of 26 0982047407 -0 201108759 Sexual functional group. The functional group includes one or more of a carboxyl group (_C00H), a hydroxyl group (_0H), a transyl group (-CH0), and an amino group (-.2), etc. The carbon nanotubes after the introduction of the hydrophilic functional group can be uniformly dispersed in the pulp during the foaming process. [0029] In this embodiment, the purified carbon nanotubes are placed in a 5 〇〇mi round bottom flask. Into a round bottom flask, 150 ml of concentrated sulfuric acid and concentrated nitric acid mixture (concentrated sulfuric acid and concentrated nitric acid in a volume of 3:1), and refluxing for 4 hours to 20 hours. The reflux reaction process makes the surface of the carbon nanotubes With a functional group. Then, • pour the reacted liquid into water, and then filter through a filter paper to obtain a carbon nanotube filter cake. Finally, wash the carbon nanotube filter cake with deionized water to the value of the medium. Sexually, a carboxylated carbon nanotube is obtained. ' [0030] Step 3: Copy "Τ.
[0031] 將浸泡後的紙漿通過抄紙工序打撈至金屬模具或配置於 金屬模具的筛網上，排除水分，堆積材料，形成定心支 片預製體。請參見圖4，本實施例中.，將浸泡後的紙襞 202裝入一抄紙裝置20的計量槽200内。通過供給管204 將紙浆 202引入一抄紙槽206内。通.過第一控制間208可 控制進入抄紙槽206内紙漿202的量，從而控制定心支片 預製體厚度。向抄紙槽206内加入適量的水稀釋紙漿2〇2 ，並攪拌均勻。通過稀釋可使紙漿202分散更均句，並在 之後的步驟中均勻沈積於抄紙模具214上。打開第二控制 閥210，使水通過排水管212排出抄紙槽206，同時使紙 漿202沈積於抄紙槽206内的抄紙模具214上。通過選擇 不同的抄紙模具214可得到不同形狀以及不同大小的定心 支片預製體。可理解，本實施例中可將稀釋奸的紙漿2〇2 098127639 表單編號Α0101 第10頁/共26頁 201108759 [0032] [0033] [0034] Ο [0035] ❹ [0036] [0037] [0038] 直接裝入一計量槽200内，然後通過第一控制閥208控制 ，使一定量的紙漿202進入抄紙槽206内。 可理解，本實施例中還可將紙漿202用水稀釋後裝入一容 器（圖未示）中，將一抄紙網（圖未示）放入該容器中 再取出，從而使紙漿202沈積於該抄紙網上以形成定心支 片預製體。 步驟四：成型。 通過熱壓工序將定心支片預製體加熱加壓，使剩下的水 分蒸發。本實施例中，將抄紙模具加熱至100°C~200t範 圍内，並施加1000牛頓〜6000牛頓的壓力保持10秒〜100 秒。可理解，本實施例中還可將堆積的定心支片預製體 自然晾乾或烘乾而無需熱壓的步驟。 該成型過程中，通過選擇抄紙模具214可直接製傷帶有通 孔102的定心支片預製體◊.可理解，本實磚例中還可先製 r· * . · - i 備沒有通孔的定心支片預製.體，然後通過打孔得到通孔 102。 ，、r 5 步驟五：後續處理。 通過沖裁工序得到定心支片100。另外’在所製備的定心 支片100上可進一步列印圖案。所述列印圖案係指於定心 支片100的表面形成高分子油墨或漆料以提高該定心支片 100的防水性與美感。 請參見圖5及圖6，本發明實施例進一步提供一應用所述 定心支片100的揚聲器10。該揚聲器10包括一支架110、 098127639 表單編號A0101 第11頁/共26頁 0982047407-0 201108759 ，磁路系統120、-音圈130、-定心支 ^ 1 (；n „ 片 1〇〇、一振動 膜13U及—音圈骨架14〇。 ,所述磁路 系汍。所述振動膜15〇的—，中，… 辑固又於所述支架110 口疋於音圈骨架140上。所述定、、士料“ WlGG的邊緣固二:所述支_，另通職套設於音圈骨細上 音圈130設置於音圈骨架140靠近所述磁路系統 12〇的1之外表面，且收容於所述料系統咖。 [0039] [0040] 所述支架11()可為一錐體結構，其 丹，、有中心孔111用於 奮設所述磁路系統12G，使該支架11()與磁路系統12〇相 對固定。 所述磁路系統120包括一導磁下板、_導磁上板122 、一磁體123及一導磁芯柱124，所述砥體123相對的兩 端分別由同心設置的導磁下板121及導磁上板122所炎持 。所述導磁上板122及磁體123均為環狀結構，所述導磁 上板122及磁體123於所述磁路系統中圍成—柱形空間。 所述導磁芯枉124容置於所述柱形空間。該導磁芯柱124 與所述導磁下板121為一體，且由導磁下板κι往導磁上 板122延伸。該導磁芯柱124與所述磁體123之間形成一 環形磁場間隙125用於容置所述音圈130。所述該導磁芯 柱12 4延伸至所述中心孔111中。[0031] The soaked pulp is salvaged to a metal mold or placed on a screen of a metal mold by a papermaking process to remove moisture and build up materials to form a centering support preform. Referring to Fig. 4, in this embodiment, the soaked paper sheet 202 is loaded into the metering tank 200 of a papermaking device 20. The pulp 202 is introduced into a papermaking slot 206 through a supply tube 204. Through the first control room 208, the amount of pulp 202 entering the papermaking slot 206 can be controlled to control the thickness of the centering piece preform. Add an appropriate amount of water to the papermaking tank 206 to dilute the pulp 2〇2 and stir evenly. The pulp 202 can be dispersed more evenly by dilution and uniformly deposited on the papermaking mold 214 in the subsequent steps. The second control valve 210 is opened to allow water to exit the papermaking tray 206 through the drain pipe 212 while the pulp 202 is deposited on the papermaking mold 214 in the papermaking tray 206. Centering segment preforms of different shapes and sizes can be obtained by selecting different papermaking dies 214. It can be understood that the diluted pulp can be used in this embodiment. 2〇2 098127639 Form No. Α0101 Page 10/Total 26 Page 201108759 [0033] [0034] Ο [0035] ❹ [0036] [0037] [0038] ] directly loaded into a metering tank 200 and then controlled by the first control valve 208 to cause a certain amount of pulp 202 to enter the papermaking slot 206. It can be understood that in this embodiment, the pulp 202 can be diluted with water and then placed in a container (not shown), and a paper net (not shown) is placed in the container and then taken out, so that the pulp 202 is deposited thereon. A paper web is formed to form a centering piece preform. Step 4: Forming. The centering piece preform is heated and pressurized by a hot pressing process to evaporate the remaining water. In this embodiment, the papermaking mold is heated to a temperature in the range of 100 ° C to 200 t, and a pressure of 1000 Newtons to 6000 Newtons is applied for 10 seconds to 100 seconds. It can be understood that in this embodiment, the stacked centering piece preforms can be naturally dried or dried without the step of hot pressing. In the molding process, the centering piece pre-formed with the through hole 102 can be directly injured by selecting the papermaking mold 214. It can be understood that in the actual brick example, r·* can be prepared first. The centering piece of the hole is prefabricated, and then the through hole 102 is obtained by punching. ,, r 5 Step 5: Subsequent processing. The centering piece 100 is obtained by a punching process. Further, a pattern can be further printed on the prepared centering piece 100. The printing pattern refers to forming a polymer ink or paint on the surface of the centering piece 100 to improve the waterproofness and beauty of the centering piece 100. Referring to FIG. 5 and FIG. 6, the embodiment of the present invention further provides a speaker 10 to which the centering piece 100 is applied. The speaker 10 includes a bracket 110, 098127639, form number A0101, page 11 / 26 pages 0982047407-0 201108759, magnetic circuit system 120, voice coil 130, - centering support ^ 1 (; n „ piece 1 〇〇, one The vibrating membrane 13U and the voice coil bobbin 14 are connected to the voice coil bobbin 140. The edge of the WlGG is two: the branch _, and the other is set on the voice coil. The upper voice coil 130 is disposed on the outer surface of the voice coil bobbin 140 near the magnetic circuit system 12〇. And the bracket 11() can be a cone structure, and the center hole 111 is used to set the magnetic circuit system 12G. The bracket 11() is relatively fixed to the magnetic circuit system 12A. The magnetic circuit system 120 includes a magnetically conductive lower plate, a magnetically conductive upper plate 122, a magnet 123 and a magnetic core post 124, and the body 123 is opposite. The magnetic conductive upper plate 122 and the magnet 123 are both annular structures, and the magnetic conductive upper plate 122 is respectively formed by the concentric magnetic lower plate 121 and the magnetic conductive upper plate 122. The magnet 123 encloses a cylindrical space in the magnetic circuit system. The magnetic core 124 is received in the cylindrical space. The magnetic core 124 is integrated with the magnetic lower plate 121, and The magnetic conductive lower plate κι extends to the magnetic conductive upper plate 122. An annular magnetic field gap 125 is formed between the magnetic conductive core 124 and the magnet 123 for accommodating the voice coil 130. 12 4 extends into the central aperture 111.
098127639 [0041]所述音圈130為揚聲器10的驅動單元，其設置於音圈骨架 140上。所述設置於音圈骨架丨4〇上的音圈13〇可容置於 所述磁場間隙125中’並於磁場間隙125中上下運動。該 音圈130為較細的導線於所述音圈骨架140上繞製而形成 ，優選地，所述導線可為漆包線。當所述音圈130接收到 第12頁/共26頁 表單編號Α0101 0982047407-0 201108759 [0042] ❹ [0043] ❹ [0044] 098127639 音頻電信號時，該音圈130產生隨音頻電信號的強度變化 而變化的磁場’此變化的磁場與磁場間隙125中由磁路系 統120產生的磁場之間發生相互作用，迫使該音圏130產 生振動。 所述音圈骨架140為巾空f形結構，其與所述導磁芯柱 m同心設置且間隔套設於所述導磁芯柱124上。所述音 圈骨架14〇可收容於所述磁場間隙125中。該音圈骨架 140與所述音圈130固定連接，且音圈骨架uo遠離所述 磁路系統120的一翻定連接於所述振動媒15〇的中心位 置，從而當所述音圏骨架140隨音圈13〇振動時，帶動所 述振動膜150滅動，從而使所述振動臈>15〇周圍的空氣運 動，產生聲波。 ν' 所述振動膜150為所述揚聲器10的發聲單元。該振動膜 150的形狀不限，與其具體應用有關，如當所述振動膜 150應用於大型揚聲器10時，該振動臈15〇可為一空心圓 錐體結構；當所述振動膜150應用於揚聲器10時，該 振動膜150可為一圓片狀結構。所述振動膜150的頂端與 所述音圈骨架140通過黏結的方式固定連接，其另一端的 外緣與所述支架11〇活動連接。本實施例中，該振動膜 150為一空心圓錐體結構。 所述定心支片100藉由通孔102套設於所述音圈骨架140 上，該定心支片1 〇 〇的外緣固定於所述定心支架11 〇靠近 所述中心孔111的一端’該定心支片1〇〇用於支持所述音 圈骨架140，且對該音圈骨架140起橫向限位的作用。該 定心支片100具有較大的彈性及強度’由於所述音圈13〇 表單編號A0101 第13頁/共26頁 0982047407-0 201108759 纏繞於所述音圈骨架140，所以該音圈130於所述磁場間 隙125中可以自由地上下移動而不做橫向移動，避免該音 圈130與磁路系統120碰觸。由於所述定心支片100其設 置於磁路系統120與振動膜150之間，並將所述磁場間隙 125的覆蓋，故該定心支片100還具有防止灰塵進入該磁 場間隙125的作用。 [0045] 所述定心支片100還影響揚聲器10中的振動膜150與音圈 130的共振頻率，具體地，定心支片100與振動膜150及 音圈130共同確定揚聲器10的共振頻率。該共振頻率的影 響因素除包括定心支片100的材料的特性外，還包括定心 支片100的幾何形狀。 [0046] 可理解，應用所述定心支片100的揚聲器10並不限於上述 結構，所述定心支片100也可應用於採用平面振動膜的微 型揚聲器中。 [0047] 本發明實施例提供的定心支片及使用該定心支片的揚聲 器具有以下優點：第一，由於奈米碳管具有優異的強度 ，故將奈米碳管分散於紙基體中，可以提高紙基體的強 度，從而使由紙基體組成的定心支片更好地對音圈骨架 起到緩衝、定位的作用。第二，由於奈米碳管具有良好 的柔韌性，將奈米碳管分散於定心支片的基體中，可以 提高基體的耐疲勞性，從而使定心支片於反復振動中不 容易疲勞變形，進而不容易產生沿揚聲器軸向的塌陷， 從而有利於提高採用該定心支片的揚聲器的使用壽命。 第三，由於奈米碳管具有較小的密度，將奈米碳管分散 於定心支片的基體中，在維持甚至提高定心支片的強度 098127639 表單編號A0101 第14頁/共26頁 0982047407-0 201108759 的同時可減小定心支片的重量，從而減輕揚聲器的重量 。尤其於微型揚聲器中’該效果更加明顯。第四，由於 奈米碳管具有良好的耐濕性及耐燃性能，將奈米碳管均 句分散於定心支片的基體中，使本發明實施例提供的定 心支片也具有良好的耐濕性及耐燃性。 Ο [0048]综上所述，本發明確已符合發明專利之要件，遂依法提 出專射請。惟’以上所述者僅為本發明之較佳實施例 ’自不能以此關本案之巾請專利範圍 技藝之人士援依本發明之精神所作之等致《‘，、、悉本案 皆應涵蓋於以下申請專利範圍内。 厂修餌或變化， 【圖式簡單說明】 圖1為本發明實施例提供的定心支片 [0049] [0050] [0051] [0052] 的結構 圖2為圖1的定心支片沿線11_11剖開的剖 圖3為本發明實施例提供的定心支片的製備 示意圖 面圈 圖4為圖3中的抄紙步驟中採用的抄紙裴 方法流程 圖 置的結構示意圖 [0053] 圖5為應用本發明實施例的定心支片的 圖。 揚聲器的結構示意 [0054] 圖6為圖5所示的揚聲器的剖面圖。 【主要元件符號說明】098127639 [0041] The voice coil 130 is a driving unit of the speaker 10, which is disposed on the voice coil bobbin 140. The voice coil 13A disposed on the voice coil bobbin 丨4〇 can be accommodated in the magnetic field gap 125 and move up and down in the magnetic field gap 125. The voice coil 130 is formed by winding a thinner wire on the voice coil bobbin 140. Preferably, the wire may be an enameled wire. When the voice coil 130 receives the 12th page/total 26 page form number Α 0101 0982047407-0 201108759 [0042] 004 [0043] 004 [0044] 098127639 When the audio signal is received, the voice coil 130 generates the intensity of the electrical signal with the audio The changing magnetic field 'interacts with this changing magnetic field interacts with the magnetic field generated by the magnetic circuit system 120 in the magnetic field gap 125, forcing the acoustic cymbal 130 to vibrate. The voice coil bobbin 140 is an empty f-shaped structure, and is disposed concentrically with the magnetic conductive core m and spaced apart from the magnetic core stud 124. The voice coil bobbin 14A can be received in the magnetic field gap 125. The voice coil bobbin 140 is fixedly connected to the voice coil 130, and a voice coil bobbin uo is remote from the magnetic circuit system 120 and connected to a center position of the vibrating medium 15〇, so that when the voice skeleton 140 is When the voice coil 13 〇 vibrates, the diaphragm 150 is driven to move, so that the air around the vibrating 臈 > 15 运动 moves to generate sound waves. The diaphragm 150 is the sounding unit of the speaker 10. The shape of the diaphragm 150 is not limited, and is related to its specific application. For example, when the diaphragm 150 is applied to the large speaker 10, the diaphragm 15 can be a hollow cone structure; when the diaphragm 150 is applied to the speaker At 10 o'clock, the diaphragm 150 may have a disk-like structure. The top end of the diaphragm 150 is fixedly coupled to the voice coil bobbin 140 by bonding, and the outer edge of the other end is movably connected to the bracket 11A. In this embodiment, the diaphragm 150 is a hollow cone structure. The centering piece 100 is sleeved on the voice coil bobbin 140 by a through hole 102, and an outer edge of the centering piece 1 is fixed to the centering bracket 11 and close to the center hole 111. One end 'the centering piece 1' is used to support the voice coil bobbin 140, and functions as a lateral limit on the voice coil bobbin 140. The centering piece 100 has a large elasticity and strength 'Because the voice coil 13 〇 form number A0101 page 13 / 26 pages 0982047407-0 201108759 is wound around the voice coil bobbin 140, the voice coil 130 is The magnetic field gap 125 can freely move up and down without lateral movement to prevent the voice coil 130 from touching the magnetic circuit system 120. Since the centering piece 100 is disposed between the magnetic circuit system 120 and the diaphragm 150 and covers the magnetic field gap 125, the centering piece 100 also has a function of preventing dust from entering the magnetic field gap 125. . [0045] The centering piece 100 also affects the resonance frequency of the diaphragm 150 and the voice coil 130 in the speaker 10. Specifically, the centering piece 100 and the diaphragm 150 and the voice coil 130 jointly determine the resonance frequency of the speaker 10. . The effect of the resonant frequency includes the geometry of the centering struts 100 in addition to the properties of the material of the centering struts 100. It is to be understood that the speaker 10 to which the centering piece 100 is applied is not limited to the above structure, and the centering piece 100 can also be applied to a micro type speaker using a planar diaphragm. [0047] The centering piece provided by the embodiment of the invention and the speaker using the centering piece have the following advantages: First, since the carbon nanotube has excellent strength, the carbon nanotube is dispersed in the paper base. The strength of the paper substrate can be increased, so that the centering piece composed of the paper base can better cushion and position the voice coil skeleton. Secondly, because the carbon nanotubes have good flexibility, the carbon nanotubes are dispersed in the matrix of the centering support, which can improve the fatigue resistance of the matrix, so that the centering fins are not easily fatigued in repeated vibrations. The deformation, and thus the collapse of the axial direction of the speaker, is not easy to occur, thereby contributing to the improvement of the service life of the speaker using the centering piece. Third, because the carbon nanotubes have a small density, the carbon nanotubes are dispersed in the matrix of the centering support, while maintaining or even increasing the strength of the centering support 098127639 Form No. A0101 Page 14 of 26 0982047407-0 201108759 At the same time, the weight of the centering piece can be reduced, thereby reducing the weight of the speaker. Especially in micro-speakers' the effect is more pronounced. Fourthly, since the carbon nanotubes have good moisture resistance and flame resistance, the carbon nanotubes are uniformly dispersed in the matrix of the centering piece, so that the centering piece provided by the embodiment of the invention also has good Moisture resistance and flame resistance. [0048] In summary, the present invention has indeed met the requirements of the invention patent, and the special shot is requested according to law. However, the above description is only a preferred embodiment of the present invention. 'The person who has been unable to use this patent to cover the scope of the patent claims to be in accordance with the spirit of the present invention. ',, and the case should be covered. It is within the scope of the following patent application. [Fig. 1] FIG. 1 is a structure of a centering piece provided by an embodiment of the present invention. [0049] [0051] FIG. 2 is a structure of the centering piece of FIG. FIG. 3 is a schematic cross-sectional view showing the preparation of a centering piece according to an embodiment of the present invention. FIG. 4 is a schematic structural view showing a flow chart of a papermaking method used in the papermaking step of FIG. 3 [0053] FIG. A diagram of a centering gusset to which an embodiment of the invention is applied. FIG. 6 is a cross-sectional view of the speaker shown in FIG. 5. [0054] FIG. [Main component symbol description]
表單編號A0101 第15頁/共26頁 [0055] 098127639 0982047407-0 201108759 紙基體 106 奈米碳管 108 支架 110 中心孔 111 磁路系統 120 導磁下板 121 導磁上板 122 磁體 123 導磁芯柱 124 磁場間隙 125 音圈 130 音圈骨架 140 振動膜 150 抄紙裝置 20 計量槽 200 紙漿 202 供給管 204 抄紙槽 206 第一控制閥 208 第二控制閥 210 排水管 212 抄紙模具 214 098127639 表單編號A0101 第16頁/共26頁 0982047407-0Form No. A0101 Page 15 of 26 [0055] 098127639 0982047407-0 201108759 Paper substrate 106 Carbon nanotube 108 Bracket 110 Center hole 111 Magnetic circuit system 120 Magnetic lower plate 121 Magnetic upper plate 122 Magnet 123 Magnetic core Column 124 Magnetic field gap 125 Voice coil 130 Voice coil bobbin 140 Vibrating membrane 150 Papermaking device 20 Metering tank 200 Pulp 202 Supply pipe 204 Paper chute 206 First control valve 208 Second control valve 210 Drain pipe 212 Papermaking die 214 098127639 Form No. A0101 16 pages/total 26 pages 0982047407-0