201021587 九、發明說明： 【發明所屬之技術領域】 本發明係有關於受話器，尤其是有關於多媒體手機中之 揚聲器及受話器。 【先前技術】 第1圖係為一習知的揚聲器100的縱向剖面圖。傳統 的揚聲器100 (俗稱喇〇八）是以永久磁鐵12〇和線圈11〇 ®製成。永久磁鐵12 0形成-個同心圓，外圍是N極，内圈 是S極。該線圈110係以可活動的方式浮接在内圈s極上。 聲音訊號以電流的型態流入該線圈11〇，使線圈11〇和永 久磁鐵12〇之間因電流變化而產生電磁力。該線圈11〇上 連接著一片音膜1〇2。由於電磁力隨著音源訊號的快速變 化’該線圈110帶動該音膜1〇2振動而發出聲音。 上述的發音原理已廣泛應用在市面上各式各樣的產品 參中，雖然樣式有不同的變化，但是線圈110和永久磁鐵12〇 的結構皆大同小異。以手機中的受話器為例，由於音膜102 必須固疋在線圈110上，在振動的過程中容易產生模態震 動（modal vibration)，使線圈110受到拉扯，而聲音 失真。當振動過大時，更有可能導致低音不足甚至扯斷線圈 110。有鑑於此，一種改良式的揚聲器結構是有待開發的。 HTC097167-0-TW/0746-A41848TWi7Final 201021587 【發明内容】 本發明實施例之一，β -音膜組成。該電磁二:種受話器。主要由—電磁鐵和 音膜與該電磁鐵相鄰而^據—音源訊號產生磁場變化。該 感應該電麵之磁場變化料，表面包含—種磁性材料，可 音膜隨之振動而發出聲音/錢磁鐵產生磁場變化時，該 該磁性材料係以電 面或兩侧表面。該受者方式附於該音膜之單侧表 D盗係貫作於一殼層中，内含一空間。 該電磁鐵係固定於該殻層 該音膜係透過-懸邊，而該音膜係懸掛於該殼層中。 的空間隔為-第-奸—射：切使該殼層中 腔，用以使該音膜發出之聲::曰孔開孔於該第- 孝曰對外發达。而至少— 孔於該第二腔，用以平衡該第二腔之氣壓。 礼孔開 在本發明另-實施例中，係採用雙線圈結構。 磁鐵固定於該第一腔中，而-第二電磁鐵固定於該第二腔 中。當該第-電磁鐵及第二電磁鐵產生磁場變化時，該音膜 隨之振動而發出聲音。 、 【實施方式】 下列實施例具體的說明如何以較佳的方式實現本發 明。實施例僅供說明一般應用的方式，而非用以限縮本發明 的範圍。實際範圍以申請專利範圍所列為準。 HTC097167-0-TW/0746-A41848TWf/Final 201021587 本發明提出-種改良式的揚聲器結構。傳統的線圈是不 固定的’本發明的電磁鐵咖定在基座上。另—方面，傳统 ^音膜相定錢圈上的，林發_音難 觸。更確切地說，本發明將音膜表面改造為磁性材質，Z 感應電磁鐵的磁力變化而產生振動。 第以圖係為本發明實施例之—的受話器2_。該受 =_中的主要元件是電磁鐵2Q6和音膜212。該電 定=根據—音源訊號產生磁場變化。根據安培右手 =圈中的電流變化會導致磁場變化。在本實施例中， =力線㈣表示該電磁鐵抓產生的磁 圖所不音膜212設置在該電磁鐵咖 磁鐵206相鄰而不接觸。該立^ 〈上方，與該電 料214… 表面包含-種磁性材 Μ之磁場— 磁鐵2〇6產生磁場變化時，哕立 的吸拉力，隨之振動而發出聲:膜212會受到向上或向下 在本貫施例中，該磁性材料 於音膜n 卄214可以電鍍的方式附著 於曰牍如之表面’也可以採用黏著方 該磁性材料心可以附著於該音臈打 y '〇 ^ 兩側表面。該磁性材料214本 之早1表面或疋 之永久磁鐵，因此亦具備N極和=者磁或切方式製成 才s極，縱向分布於該音膜 HTC097167-0-TW/0746-A41848TWf^mal 201021587 - 212的上表面和下表面。更進一步的說，該音膜212本身 可能直接以214的材料製成，直接具備永久磁力。 該受話器200a係包裝在一殼層210内含的空間之 中。該音膜212係透過一種懸邊216而懸掛在該殼層210 中，使該殼層210中的空間隔為一上空腔220和一下空腔 230。換句話說，該音膜212是配置在可感應電磁鐵206 之磁力變化的位置上，但是並不固定於電磁鐵206上，甚 參 至未接觸到該電磁鐵2 0 6。 另一方面，該電磁鐵2 06係直接固定於該殼層210中， 這種穩固的結構有很多好處。舉例來說，固定的電磁鐵206 比較穩固，不易脫落或扯斷，可以承受較強的磁場變化與振 動能力。除此之外，固定的結構比較财熱，因此可承受自動 打件，表面處理，銲接，過錫乳等製程，使製造過程更為簡 化。 ❿ 在該殼層210的上空腔220中，有一出音孔202開孔 於該音膜212的附近，可使該音膜212發出之聲音對外發 送。而為了平衡殼層210中的氣壓，在下空腔230中也包 含至少一侧氣孔204。 該殼層210的材質可以是鐵殼。該受話器2 00a尤其 適合實作於多媒體手機之中。除了音量及音質的改良之外， 耐用度也提高了。 HTC097167-0-TW/0746-A41848TWf/Final 8 201021587 * 第2b圖係為本發明受話器之另一實施例。為了加強磁 場變化的效果，可以採用雙線圈結構。如第2b圖所示，一 •個電磁鐵206配置於音膜212的下方，而一個電磁鐵208 配置於該音膜212的上方。透過線圈電流的安排，可使電 磁鐵2〇6對音膜212產生吸力時，該電磁鐵2〇8對音膜 212產生拉力。相對的，當電磁鐵206對音膜212產生拉 力時，該電磁鐵208對音膜212產生吸力。這種上下交互 鲁作用即稱為推挽效應（push-pull effect )。 與第2a圖的實施例相似，該受話器200b主要由包含 一空間的殼層210構成。一音膜212懸掛於該殼層210中， 使該空間分為一上空腔22〇和一下空腔23〇。該電磁鐵208 固定於該上空腔220中，與該音膜212的上表面相鄰而不 接觸。該電磁鐵2〇6則固定於該下空腔23〇中，與該音膜 212的下表面相鄰而不接觸。兩者同時根據一音源訊號產生 ®磁場變化，以形成推挽效應。 在第2b圖中，磁力線24〇所形成的磁迴路範圍較廣， 而音膜212位於正中間’因此所感應到的推力和拉力是較 均勻的。該音膜2!2表面加了—層磁性材料2l4，N極和s 極各位於上表面和下表面，可感應該電磁鐵2〇6及該電磁 鐵2〇8之磁場變化。當該電磁鐵2〇6及電磁鐵2〇8產生磁 場變化時，該音膜212也就隨之振動而發出聲音。 HTC097167-0-TW/0746^A41848TWfiTinal 9 201021587 * 在本實施例中，懸邊216的材質基本上是具有彈性的， 以便於音膜212在電磁鐵2 08和電磁鐵2 06之間振動。本 發明不限定其實際上採用的材質與接著方式。與第2a圖的 實施例類似，該殼層210包含至少一出音孔202，開孔於 該上空腔220，以及至少一侧氣孔204，開孔於該下空腔 230，用以平衡該殼層210中之氣壓。上述實施例說明了本 發明磁性音膜與固定線圈的精神所在，然而實際上受話器的 ❹設計可以有許多種不同的樣式，本發明不限定其外在樣式。 本實施例尤其適用於多媒體手機，但是其他發聲裝置也可應 用相同的原理，本發明不在此限。 雖然本發明以較佳實施例說明如上，但可以理解的是本 發明的範圍未必如此限定。相對的，任何基於相同精神或對 習知技術者為顯而易見的改良皆在本發明涵蓋範圍内。因此 專利要求範圍必須以最廣義的方式解讀。 ❹【圖式簡單說明】 第1圖係為一習知的喇队結構示意圖；以及 第2a圖和第2b圖係為本發明受話器之實施例。 【主要元件符號說明】 100揚聲器 102音膜 110線圈 120永久磁鐵 20〇a、200b受話器 HTC097167-0-TW/0746-A41848TWf/Final 201021587 - 2 02出音孔 206、208電磁鐵 212音膜 216懸邊 2 3 0下空腔 2 04侧氣孔 210殼層 214磁性材料 220上空腔 240磁力線 HTC097167-0-TW/0746-A41848TWf/Final201021587 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a receiver, and more particularly to a speaker and a receiver in a multimedia handset. [Prior Art] Fig. 1 is a longitudinal sectional view of a conventional speaker 100. The conventional speaker 100 (commonly known as the Lama) is made of a permanent magnet 12〇 and a coil 11〇®. The permanent magnets 120 form a concentric circle, the periphery is the N pole, and the inner ring is the S pole. The coil 110 is floated on the inner ring s pole in a movable manner. The sound signal flows into the coil 11A in the form of a current, and an electromagnetic force is generated between the coil 11A and the permanent magnet 12A due to a change in current. A sound film 1〇2 is connected to the coil 11A. Since the electromagnetic force changes rapidly with the sound source signal, the coil 110 causes the sound film 1〇2 to vibrate to emit sound. The above-mentioned pronunciation principle has been widely applied to various products in the market. Although the style has different variations, the structure of the coil 110 and the permanent magnet 12〇 are similar. Taking the receiver in the mobile phone as an example, since the sound film 102 must be fixed on the coil 110, modal vibration is easily generated during the vibration, and the coil 110 is pulled and the sound is distorted. When the vibration is too large, it is more likely to cause the bass to be insufficient or even to break the coil 110. In view of this, an improved speaker structure is yet to be developed. HTC097167-0-TW/0746-A41848TWi7Final 201021587 SUMMARY OF THE INVENTION One embodiment of the present invention consists of a β-tone film. The electromagnetic two: a type of receiver. Mainly by the electromagnet and the sound film adjacent to the electromagnet, the sound source signal generates a magnetic field change. The magnetic field material that senses the electric surface has a magnetic material on the surface, and the sound film vibrates to emit a sound/money magnet. When the magnetic field changes, the magnetic material is electrically or bilaterally surfaced. The one-sided watch attached to the sound film is formed in a shell layer and contains a space. The electromagnet is fixed to the shell layer. The sound film is transmitted through the suspension, and the sound film is suspended in the shell layer. The space interval is - the first - rape - shot: cut the cavity in the shell, in order to make the sound of the sound film:: pupil opening in the first - filial development. And at least - the hole is in the second cavity for balancing the air pressure of the second cavity. In the other embodiment of the invention, a double coil structure is employed. A magnet is fixed in the first cavity, and a second electromagnet is fixed in the second cavity. When the first electromagnet and the second electromagnet generate a magnetic field change, the sound film vibrates to emit a sound. [Embodiment] The following examples specifically illustrate how the present invention can be implemented in a preferred manner. The examples are for illustrative purposes only, and are not intended to limit the scope of the invention. The actual scope is subject to the scope of the patent application. HTC097167-0-TW/0746-A41848TWf/Final 201021587 The present invention proposes an improved speaker structure. The conventional coil is not fixed. The electromagnet of the present invention is set on the base. On the other hand, the traditional sound film on the money circle, Lin Fa _ sound difficult to touch. More specifically, the present invention transforms the surface of the sound film into a magnetic material, and the magnetic force of the Z-induced electromagnet changes to generate vibration. The figure is a receiver 2_ of the embodiment of the invention. The main components of the received =_ are the electromagnet 2Q6 and the sound film 212. This determines that the magnetic field changes according to the source signal. According to Ampere's right hand = current changes in the circle will cause the magnetic field to change. In the present embodiment, the = force line (4) indicates that the magnetic film generated by the electromagnet is not disposed on the electromagnet magnet 206 and is not in contact. The upper surface of the electric material 214...the surface of the magnetic material 214...the magnetic field of the magnetic material —6, when the magnet 2〇6 generates a magnetic field change, the tensile force of the erecting force vibrates to emit sound: the film 212 is subjected to upward or Downward in the present embodiment, the magnetic material may be attached to the surface of the sound film n 卄 214 by electroplating. It may also be adhered to the magnetic material. The magnetic material may be attached to the sound 臈 〇 〇 ^ Both sides of the surface. The magnetic material 214 is a permanent magnet of the surface of the first or the 疋, and therefore has an N pole and a magnetic or cutting method to form the s pole, and is longitudinally distributed on the sound film HTC097167-0-TW/0746-A41848TWf^mal 201021587 - 212 upper and lower surfaces. Furthermore, the sound film 212 itself may be made directly of the material of 214 and directly have a permanent magnetic force. The receiver 200a is packaged in a space contained within a shell 210. The sound film 212 is suspended in the shell layer 210 through a hanging edge 216 such that the gaps in the shell layer 210 are an upper cavity 220 and a lower cavity 230. In other words, the sound film 212 is disposed at a position where the magnetic force of the inductive electromagnet 206 changes, but is not fixed to the electromagnet 206, and is not even contacted by the electromagnet 206. On the other hand, the electromagnet 206 is directly fixed in the shell 210, and this stable structure has many advantages. For example, the fixed electromagnet 206 is relatively stable, does not fall off or tear, and can withstand strong magnetic field changes and vibration. In addition, the fixed structure is relatively hot, so it can withstand the processes of automatic parts, surface treatment, welding, and tin soldering, which makes the manufacturing process simpler. ❿ In the upper cavity 220 of the shell 210, a sound hole 202 is opened in the vicinity of the sound film 212, so that the sound emitted by the sound film 212 can be transmitted to the outside. In order to balance the air pressure in the shell 210, at least one side of the air holes 204 is also included in the lower cavity 230. The material of the shell layer 210 may be an iron shell. The receiver 2 00a is particularly suitable for implementation in a multimedia handset. In addition to improvements in volume and sound quality, durability is also improved. HTC097167-0-TW/0746-A41848TWf/Final 8 201021587 * Figure 2b is another embodiment of the receiver of the present invention. In order to enhance the effect of the magnetic field change, a double coil structure can be employed. As shown in Fig. 2b, one electromagnet 206 is disposed below the sound film 212, and one electromagnet 208 is disposed above the sound film 212. When the electromagnet 2〇6 generates suction force to the sound film 212 by the arrangement of the coil current, the electromagnet 2〇8 generates a pulling force to the sound film 212. In contrast, when the electromagnet 206 generates a tensile force to the sound film 212, the electromagnet 208 generates a suction force to the sound film 212. This up-and-down interaction is called the push-pull effect. Similar to the embodiment of Fig. 2a, the receiver 200b is mainly composed of a shell layer 210 containing a space. A sound film 212 is suspended in the shell layer 210 such that the space is divided into an upper cavity 22 一下 and a lower cavity 23 〇. The electromagnet 208 is fixed in the upper cavity 220 adjacent to the upper surface of the diaphragm 212 without contact. The electromagnet 2〇6 is fixed in the lower cavity 23〇 adjacent to the lower surface of the diaphragm 212 without contact. Both generate a magnetic field change based on an audio signal to form a push-pull effect. In Fig. 2b, the magnetic lines 24 〇 form a wider magnetic circuit, and the sound film 212 is located in the middle. Therefore, the induced thrust and pulling force are relatively uniform. The surface of the sound film 2! 2 is provided with a layer of magnetic material 2l4, and the N pole and the s pole are located on the upper surface and the lower surface, respectively, to sense the change of the magnetic field of the electromagnet 2〇6 and the electromagnetic iron 2〇8. When the electromagnet 2〇6 and the electromagnet 2〇8 generate a magnetic field change, the sound film 212 vibrates to emit a sound. HTC097167-0-TW/0746^A41848TWfiTinal 9 201021587 * In the present embodiment, the material of the suspension 216 is substantially elastic so that the sound film 212 vibrates between the electromagnet 208 and the electromagnet 206. The invention does not limit the materials and the manner in which it is actually employed. Similar to the embodiment of FIG. 2a, the shell layer 210 includes at least one sound hole 202, an opening in the upper cavity 220, and at least one side air hole 204, and an opening in the lower cavity 230 for balancing the shell. The gas pressure in layer 210. The above embodiment illustrates the spirit of the magnetic sound film and the fixed coil of the present invention, but in practice the ❹ design of the receiver can have many different styles, and the present invention is not limited to its external style. This embodiment is particularly applicable to multimedia mobile phones, but other sounding devices can also apply the same principle, and the present invention is not limited thereto. While the invention has been described above by way of a preferred embodiment, it is understood that the scope of the invention is not necessarily limited. In contrast, any modifications that are obvious to those skilled in the art or to those skilled in the art are within the scope of the invention. Therefore, the scope of patent claims must be interpreted in the broadest sense. ❹ [Simplified description of the drawings] Fig. 1 is a schematic diagram of a conventional racquet structure; and Figs. 2a and 2b are embodiments of the receiver of the present invention. [Main component symbol description] 100 speaker 102 sound film 110 coil 120 permanent magnet 20〇a, 200b receiver HTC097167-0-TW/0746-A41848TWf/Final 201021587 - 2 02 sound hole 206, 208 electromagnet 212 sound film 216 hanging Side 2 3 0 lower cavity 2 04 side air hole 210 shell layer 214 magnetic material 220 upper cavity 240 magnetic field line HTC097167-0-TW/0746-A41848TWf/Final