i、新型說明： 【新型所屬之技術領域】 α本新型關於微型剩σΛ，更特定而言，係關於一種微型剩 、其中磁軛的邊緣結構與一平板被改進來擴充一磁性間 隙之内的-水平磁場線區域，藉此改善作用在—聲音線圈上 的一驅動力。 【先前技術】 概言之’喇队為轉換電氣信號成為聲音信號之設備。喇 σ八主要分類成一中到大型的喇0八，其連接至—音訊或一放大 器，以顯著地放大聲音，而一小型制0八用於—攜帶式聲音裝 置，其目前已增加需求，該裝置像是行動電話、筆記型電腦、 MP3播放器及耳機等。這些小型喇叭概略稱為一微型喇叭。 本新型關於該微型制Π八。 典型的微型嘲U八具有一般性結構的組態將參照第1圖 做簡單說明。第1圖為一典型微型喇叭100之示意剖面透視 圖。 典型微型喇久100包括一框架101、—磁輛1〇2、一永 久磁鐵103、一平板104、一聲音線圈105及一隔膜1〇6。雖 然未示於第1圖中，一外蓋耦合於框架10〗之上方部。 框架101為界定了該微型喇八之外觀的構件。一排氣孔 (未示出）界定在框架101之侧邊上。隔犋1〇6相對於—邊界 部108被區分成一内側部1〇7及一外側邹1〇9。該聲音線1 的一上端當中纏繞一導線，其附著於隔犋1〇6之邊界部' 如哀 Μ382<584 的-底部表面。未纏繞在聲音線圈1Q5中的該導線之一部份 被暴露於框架iG1 連接至外部電源。 自聲日線圈1Q5向下延伸的_部份設置在—磁性間隙 中’其為形成在平板104之内部側壁與磁輛1〇2之間的一空 間。當具有複數個頻率之電流信號被施加於聲音線圈ι〇5 ^ ’根據電流的密度及該頻率的振幅而與—磁場互動以產生 :機械能量。因此，聲音線圈⑽即垂直地移動。因此，附 著於聲音線圈105之隔膜廳被垂直移動，亦產生振動。也 就是說’隔膜2(M綠直地軸，以產生可由正常聽覺的人 所聽到的聲壓。 第2圖為一磁場線流動的示意圖。第2圖所示僅為磁軛 102、平板104及聲音線圈1〇5之部份的剖面圖。在具有該 瓜丨生、、、。構的典型微型喇叭100中，由永久磁鐵1〇3產生的 一磁場線Μ經由平板刚出現在一空間，然後再次進入磁 輛1〇2而返回到永久磁鐵103以形成一磁性電路。 但是，平板1〇4與磁軛1〇2彼此面對地設置在表面上。 因此，磁軛102的該等表面相對於平板1〇4並未對稱且垂直 地設置。因此，對於磁場線Μ之組態中不想要由平板1〇4 之一邊缘的上方與側向表面出現而進入磁軛102之一邊緣的 上方與側向表面的狀況。也就是說，通過聲音線圈105之磁 %線Μ可具有一小區域，其中磁場線Μ被維持成一水平狀 態。同時，該磁場在該磁性電路之上方部與下方部之間的對 稱性可以降低。 此外’由於藉由電流流到磁場線Μ及聲音線圈1〇5 [申] 5 M382684 • 的反應所產生的—勞倫兹力⑽她force)作用在多個方向 上，聲音線圈105為非垂直地振動而產生失真。同時在某種 狀況下’其限制在於聲音線圈1〇5會與平板104或磁軛、1〇2 碰撞而造成它們的損壞。 【新型内容】 ' 因此’本新型係關於—種微型伽其實質上可減輕由 ^ 於相關技術之限制及缺點造成的一或多種問題。 "本新型一目的在於提供一種微型喇β八，其中在一磁軛與 -平板之間的-磁性_内—磁力線的水平區域被擴充^ 改善一聲音線圈的驅動力。 ^本新型之額外優點、目的及特徵將部份在以下的說明中 提出，而其它部份對於本技術專業人士將可在檢視下述内容 後更加瞭解或可由本新型的實施當_來獲悉。本新型之該等 目的及其它優點將可由所揭示的說明及其申請專利範圍，以 • 及附屬圖式中所特定指明的結構來進行瞭解與獲得。 - 為了達到這些目的及其它優點，並根據本新型之目的， 如此處所具體實施及廣義描述者，提供一種微型喇叭，其包 括:一框架；一磁軛，其固定於該框架，該磁軛具有一接收槽； 一永久磁鐵，其固定於該磁軛的接收槽之一底部表面；一平 板，其固定於該永久磁鐵的一上表面；一隔膜，其中其一外 側周邊固定於該框架；及一聲音線圈，其固定於該隔膜的一 c * 底部表面，其中一倒角表面被設置在該平板與該磁軛之側向 表面中至少一者的一上端。 6 該倒角表面可以包括-磁_角表面，其設置在該磁輛 的上方部上，且該磁軛倒角表面在沿著通過該平板的一中 U之一虛擬表面取出的一垂直剖面圖中可沿著連接在該磁 j的-上表面上一預定的第一點到該磁軛的該側向表面上 一預定第二點的-直線做設置，其中該第—點設置在被界定 對應於在該磁歡厚度的大約丨/4之位黯的—水平最小點 及被界定對應於由一虛擬磁軛接觸點（即該磁軛之侧向表面 與上表面之延伸線彼此接觸處）在一向外方向上該厚度的大 約4/3之位置處的—水平最大點之間，而第二點係設置在被 界定對應於在該磁軛之厚度的大約1/4之位置處的一垂直最 小點及被界定對應於由該虛擬磁軛接觸點在一向下方向上 該磁軛之厚度的大約3/4之位置處的—垂直最大點之間。 該倒角表面可以包括一平板倒角表面，其設置在該平板 的一上方部上，且該平板倒角表面在沿著通過該平板的一中 心之一虛擬表面取出的一垂直剖面圖中可沿著連接在該平 反的上表面上預疋的第二點到該平板的該側向表面上 一預定第四點的一直線做設置，其中該第三點設置在被界定 對應於在該平板之厚度的大約1/4之位置處的一水平最小點 及被界疋對應於由一虛擬平板接觸點（即該平板之侧向表面 與上表面之延伸線彼此接觸處）在一向内方向上該厚度的大 約4/3之位置處的一水平最大點之間，❿第四點係設置在被 界定對應於在該平板之厚度的大約1/4之位置處的一垂直最 小點及被界定對應於由該虛擬平板接觸點在一向下方向上 該平板之厚度的大約3/4之位置處的一垂直最大點之間。Η M382684 _ 該倒角表面可以包括在該平板上的一平板倒角表面與 在該磁軛上的一磁軛倒角表面。 該磁軛倒角表面可以在沿著通過該平板的一中心之一 虛擬表面取出的一垂直剖面圖中沿著連接在該磁軛的一上 表面上一預定的第一點到該磁軛的該侧向表面上一預定第 二點的一直線做設置，其中該第一點設置在被界定對應於在 -該磁軛之厚度的大約1/4之位置處的一水平最小點及被界定 垂 對應於由一虛擬磁軛接觸點（即該磁軛之側向表面與上表面 之延伸線彼此接觸處）在一向外方向上該厚度的大約4/3之 位置處的一水平最大點之間，而第二點係設置在被界定對應 於在該磁軛之厚度的大約1/4之位置處的一垂直最小點及被 界定對應於由該虛擬磁軛接觸點在一向下方向上該磁軛之 厚度的大約3/4之位置處的一垂直最大點之間，且該平板倒 角表面在沿著通過該平板的一中心之一虛擬表面取出的一 垂直剖面圖中可沿著連接在該平板的一上表面上一預定的 φ 第二點到該平板的該側向表面上一預定第四點的一直線做 • 5又置，其中該第二點设置在被界定對應於在該平板之厚度的 大約1/4之位置處的一水平最小點及被界定對應於由一虛擬 平板接觸點（即該平板之侧向表面與上表面之延伸線彼此接 觸處)在一向内方向上該厚度的大約4/3之位置處的一水平 最大點之間，而第四點係設置在被界定對應於在該平板之厚 度的大約1M之位置處的一垂直最小點及被界定對應於由該 虛擬平板接觸點在一向下方向上該平板之厚度的大約3/4之 位置處的一垂直最大點之間。 r c M382、684 該平板倒角表面與該磁_角表面可 此相對的該等兩個側向表面之—中心 =於横跨彼 對稱地設置。 m擬垂直線做 該第-點可為由該虛擬磁耗接觸點 界定在對應於該縣厚料W之位置==方向上被 二點可為由該虛擬磁_觸點在該向下且該第 應於該磁輛厚度的1/2之位置處的一_。向上被界定在對 可瞭解到前述對於本新型的—般說明 :範例性及說明性，並要提供如所主張的新型之2 = 【實施方式】 例皆佳具體實施例進行詳細參照，其範i. New type description: [New technical field] α This new type relates to micro-remaining σΛ, more specifically, to a kind of micro-remaining, in which the edge structure of the yoke and a flat plate are modified to expand within a magnetic gap. a horizontal magnetic field line region, thereby improving a driving force acting on the sound coil. [Prior Art] In general, the 'La's team is a device that converts electrical signals into sound signals. La 八 八 is mainly classified into a medium to large 0 0 八, which is connected to an audio or an amplifier to significantly amplify the sound, and a small system is used for a portable sound device, which has increased demand. Devices such as mobile phones, notebook computers, MP3 players and headphones. These small speakers are roughly referred to as a miniature speaker. This new type is about the micro system. A typical miniature singular configuration with a general structure will be briefly explained with reference to Figure 1. Figure 1 is a schematic cross-sectional perspective view of a typical microhorn 100. The typical micro-long time 100 includes a frame 101, a magnetic vehicle 1, a permanent magnet 103, a flat plate 104, an acoustic coil 105, and a diaphragm 1〇6. Although not shown in Fig. 1, an outer cover is coupled to the upper portion of the frame 10. The frame 101 is a member that defines the appearance of the miniature horn. A venting opening (not shown) is defined on the side of the frame 101. The barrier 1 is divided into an inner portion 1〇7 and an outer side 1〇9 with respect to the boundary portion 108. A wire is wound around an upper end of the sound line 1 and attached to the bottom surface of the boundary portion ' Μ 382 < 584. A portion of the wire that is not wound in the voice coil 1Q5 is exposed to the frame iG1 and connected to an external power source. The downward portion of the self-sounding day coil 1Q5 is disposed in the -magnetic gap, which is a space formed between the inner side wall of the flat plate 104 and the magnetic vehicle 1〇2. When a current signal having a plurality of frequencies is applied to the voice coil ι〇5^', it interacts with the magnetic field according to the density of the current and the amplitude of the frequency to produce: mechanical energy. Therefore, the sound coil (10) moves vertically. Therefore, the diaphragm chamber attached to the voice coil 105 is vertically moved, and vibration is also generated. That is to say, 'Separator 2 (M green straight axis to generate sound pressure that can be heard by a normal hearing person. Fig. 2 is a schematic diagram of a magnetic field line flow. Fig. 2 shows only yoke 102, flat plate 104 and A cross-sectional view of a portion of the voice coil 1〇5. In a typical micro-horn 100 having the structure of the melon, the magnetic field line generated by the permanent magnet 1〇3 is newly appeared in a space via the flat plate. Then, the magnetic vehicle 1〇2 is again entered and returned to the permanent magnet 103 to form a magnetic circuit. However, the flat plate 1〇4 and the yoke 1〇2 are disposed facing each other on the surface. Therefore, the surfaces of the yoke 102 It is not symmetrically and vertically disposed with respect to the flat plate 1〇4. Therefore, it is not desirable for the configuration of the magnetic field line 由 to enter the edge of one of the yokes 102 by the upper and lateral surfaces of one of the edges of the flat plate 1〇4. The condition of the upper and lateral surfaces. That is, the magnetic flux Μ through the voice coil 105 can have a small area in which the magnetic field line Μ is maintained in a horizontal state. At the same time, the magnetic field is above and below the magnetic circuit. The symmetry between the parts can be reduced. In addition, due to the reaction of the current flowing to the magnetic field line 声音 and the sound coil 1〇5 [申] 5 M382684 • the Lorentz force (10) her force acts in multiple directions, the sound coil 105 is non-vertical The ground vibrates to produce distortion. At the same time, under certain conditions, the limitation is that the voice coil 1〇5 collides with the flat plate 104 or the yoke, 1〇2 to cause damage thereto. [New content] 'Therefore, the present invention relates to a kind of micro-gamma which substantially alleviates one or more problems caused by the limitations and disadvantages of the related art. "One object of the present invention is to provide a micro-arab-8 in which a horizontal region of a magnetic-inner-magnetic field line between a yoke and a flat plate is expanded to improve the driving force of a voice coil. Additional advantages, objects, and features of the novel embodiments are set forth in the description which follows, and in the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The above and other advantages of the present invention will be understood and attained by the description and the appended claims. In order to achieve these and other advantages, and in accordance with the purpose of the present invention, as embodied and broadly described herein, a miniature horn is provided that includes: a frame; a yoke secured to the frame, the yoke having a receiving magnet; a permanent magnet fixed to a bottom surface of one of the receiving grooves of the yoke; a flat plate fixed to an upper surface of the permanent magnet; a diaphragm having an outer periphery fixed to the frame; a sound coil secured to a c* bottom surface of the diaphragm, wherein a chamfered surface is disposed at an upper end of at least one of the flat surface of the plate and the yoke. 6 The chamfered surface may include a magnetic-angular surface disposed on the upper portion of the magnetic vehicle, and the yoke chamfered surface is taken along a vertical section taken along a virtual surface of one of the U through the flat plate The figure may be arranged along a line connecting a predetermined first point on the upper surface of the magnetic j to a predetermined second point on the lateral surface of the yoke, wherein the first point is set in the Defining a horizontal minimum point corresponding to approximately 丨/4 of the thickness of the magnetic enamel and being defined to correspond to a virtual yoke contact point (ie, an extended line of the lateral surface and the upper surface of the yoke are in contact with each other) a position between the horizontal maximum point at a position of about 4/3 of the thickness in an outward direction, and the second point is disposed at a position defined to correspond to about 1/4 of the thickness of the yoke A vertical minimum point is defined between the vertical maximum point corresponding to the position of the virtual yoke contact point at about 3/4 of the thickness of the yoke in a downward direction. The chamfered surface may include a flat chamfered surface disposed on an upper portion of the flat plate, and the flat chamfered surface may be in a vertical cross-sectional view taken along a virtual surface passing through a center of the flat plate Arranging along a line connecting a second point pre-twisted on the flat upper surface to a predetermined fourth point on the lateral surface of the flat plate, wherein the third point is disposed to be defined corresponding to the flat plate a horizontal minimum point at a position of about 1/4 of the thickness and the boundary corresponds to an inward direction by a virtual flat contact point (ie, where the extending surfaces of the lateral surface and the upper surface of the flat plate contact each other) Between a horizontal maximum point at a position of about 4/3 of the thickness, the fourth point is disposed at a vertical minimum point defined at a position corresponding to about 1/4 of the thickness of the flat plate and is defined to correspond Between a vertical maximum point at a position of about 3/4 of the thickness of the flat plate in the downward direction by the virtual plate contact point. Η M382684 _ The chamfered surface may include a flat chamfered surface on the plate and a yoke chamfered surface on the yoke. The yoke chamfered surface may be along a predetermined first point attached to an upper surface of the yoke to a yoke along a vertical cross-sectional view taken through a virtual surface of a center of the flat plate Setting a line of a predetermined second point on the lateral surface, wherein the first point is disposed at a horizontal minimum point defined at a position corresponding to about 1/4 of the thickness of the yoke Corresponding to a horizontal maximum point at a position of about 4/3 of the thickness in an outward direction by a virtual yoke contact point (i.e., where the extension lines of the lateral surface and the upper surface of the yoke are in contact with each other) And the second point is disposed at a vertical minimum point defined at a position corresponding to about 1/4 of the thickness of the yoke and is defined to correspond to the yoke in a downward direction by the virtual yoke contact point Between a vertical maximum point at a position of about 3/4 of the thickness, and the flat chamfered surface is connectable along a vertical cross-sectional view taken along a virtual surface through a center of the flat plate a predetermined φ on an upper surface of the plate a two point to a predetermined fourth point on the lateral surface of the plate is set to 5, wherein the second point is disposed at a position defined to correspond to approximately 1/4 of the thickness of the plate The horizontal minimum point is defined as a level corresponding to a position of about 4/3 of the thickness in an inward direction by a virtual flat contact point (ie, where the extended line of the lateral surface and the upper surface of the flat plate are in contact with each other) Between the maximum points, and the fourth point is disposed at a vertical minimum point defined at a position corresponding to approximately 1 M of the thickness of the flat plate and is defined to correspond to the flat plate in a downward direction by the virtual flat plate contact point Between a vertical maximum point at a position of approximately 3/4 of the thickness. r c M382, 684 The chamfered surface of the flat plate and the two lateral surfaces of the magnetic-angular surface may be symmetrically disposed across the two lateral surfaces. m pseudo vertical line to do the first point can be defined by the virtual magnetic loss contact point in the position corresponding to the county thick material W == direction is two points can be the virtual magnetic_contact in the downward direction The first is at a position 1/2 of the thickness of the magnetic vehicle. The above description is for the general description of the present invention: exemplary and illustrative, and provides a novel 2 as claimed. [Embodiment] Examples are well described in detail.
a以下將參照第3圖到第5圖詳細說明根據本新型—具體 實知例的一種微型制p八。 _ 第3圖所示為根據本新型一具體實施例之微型喇队i的 不思剖面透視圖，而第4圖及第5圖所示為在第3圖之微型 唓卜八1中一磁軛2〇與一平板4〇之主要零件的剖面圖。 此具體實施例之微型喇叭1包括一框架1〇;該磁軛2〇， /、口疋於框架1〇並具有一接故槽；一永久磁鐵3〇，其固定 於磁軛20之接收槽的一底部表面；該平板4〇，其固定於永 久礤鐵30之一上表面；一隔膜5〇，其中其一外侧周邊固定 於樞架10，及一聲音線圈60，其中其一上端固定於隔膜[50] 9 M382684 ' 之一底部表面。 本新型之特徵在於磁軛20與平板40之組態，而其餘組 件與一典型的微型喇π八具有相同的組態。因此，將省略它們 的詳細說明。以下將僅詳細說明本新型之特徵性組態。 根具此具體實施例之微型喇叭丨，一磁軛倒角表面24 與一平板倒角表面44分別設置在磁軛2〇之—側向表面22 • 的一上端，及平板40之一侧向表面42的一上端。在此處， 鲁 磁輕20之側向表面22面向平板40之側向表面42。 磁軛倒角表面24與平板倒角表面44將參照第4圖及第 5圖詳細說明。第4圖所示為通過微型喇叭丨之平板4〇的中 心之一虛擬表面的垂直剖面圖。第5圖所示為僅有第4圖之 磁輛20與平板4〇之細部部份剖面圖。 磁軛20包括一底部構件，及一側壁，其沿著該底部構 件之周邊向上延伸。倒角表面24設置在該側壁之内部侧向 表面22的—上方部。倒角表面24設置在側向表面22接觸 φ 磁軛20之—上表面23處的一部份上。 • 請參照第5圖，磁軛倒角表面24沿著連接磁軛2〇之上 表面23上一預定的第一點Ai到磁輛20之側向表面22上一 預定的第二點Α2之一直線做設置。第一點Α1設置在被界 定在對應於磁軛20之厚度Yt的大約1/4處的位置處之一水 平最小點Y2與被界定在對應於由一虛擬磁軛接觸點Y1(即 磁軛20之側向表面22與上表面23之延伸線彼此接觸處)在 一向外方向上該厚度Yt的大約4/3之位置處的一水平最大點 Y3之間。第二點A2設置在被界定對應於磁軛2〇之厚度[彻 M382684 ' 的大約1/4之位置處的一垂直最小點Y4與被界定在對應於 由該虛擬磁軛接觸點Y1在—向下方向上磁軛2〇之厚度 的大約3/4之位置處的一垂直最大點γ5之間。也就是說， 磁軛倒角表面24沿著磁軛2〇之側壁與沿著連接該第一點 Α1到該第二點Α2之t線做三維地設置，其被限制在一剖面 圖中。 ' 平板倒角表面44被設置在平板40之侧向表面42的一 鲁上方部。平板倒角表面44被設置在側向表面42接觸平板牝 之一平面上表面44的一位置處。 平板倒角表面44沿著連接該平板之上表面犯上一預定 的第三點A3到平板40之側向表面42上一預定的第四點 之一直線做設置。第三點A3設置在被界定在對應於平板4〇 之厚度Pt的大約1/4處的位置處之一水平最小點打與被界 定在對應於由一虛擬磁軛接觸點Pl(即平板4〇之侧向表面 42與上表面43之延伸線彼此接觸處)在一向内方向上該厚产 • Pt的大約4/3之位置處的一水平最大點P3之間。第四點 • 設置在被界定在對應於平板40之厚度pt的大約1/4之位置 處的一垂直最小點P4與界定對應於由該虛擬磁扼接觸點 在一向下方向上平板40之厚度Pt的大約3/4之位置處的— 垂直最大點P5之間。 也就是說’平板倒角表面44沿著平板4〇之周邊與沿著 連接該第二點A3到該苐四點A4之直線做三維地設置，其 被限制在一剖面圖中。 對於此具體實施例，平板倒角表面44與磁軛倒角表[面] M38Z684 24係相對於横跨彼此面對的兩個側向表面幻及22之中心點 的，虚擬直線c做對稱地設置。也就是說，倒角表面 24具有相同的角度及面積。 同時在此具體實施例中，磁軛倒角表面24之第一點Ai 為界定在對應於由虛擬磁軛接觸點γι在該向外方向上該磁 輛厚度Yt之1/2的位置處的—個點，而第二點A2為界定^ 對應於由該虛擬磁祕觸點Y1在該向τ方向上該磁輛厚度 竹之1/2的位置處的一個點。同時’平板倒角表面44的^ 二點A3為界定在對應於由該虛擬磁軛接觸點？〗在該向内方 向上該平板厚度Pt^ 1/2的位置處的一個點，而平板到角表 面44的第四點A4為界定在對應於由該虛擬磁軛接觸點w 在該向下方向上該平板厚度扒之1/2的位置處的一個點。因 此，當磁軛20具有與平板40相同的厚度時，磁軛倒角表面 22之形狀對稱於平板倒角表面42之形狀。 根據具有上述結構之微型喇u八1 ’因為彼此面對的倒角 表面24及44分別設置在磁輛20與平板40之該等上方部， 該磁力線之水平區域可在一磁性間隙内擴充。 也就是說，對於該典型微型剩P八，因為一磁輛與—平板 之上端大致彼此垂直，構成一磁性電路之一磁力線的水平區 域無法充份地固定在一磁性間隙之内，並會降低平板40之 上方部與下方部之間磁場的對稱性。因此，其限制在於運作 該聲音線圈之驅動力即會降低，並發生一非垂直的移動。 值是根據本新型，因為倒角表面24及44分別設置在磁 軛20與平板40上，前述的典型限制即可解決。同時，在駿] M382684 磁性間隙之該磁力線的水平區域可被擴充，且平板4〇之上 方部與下方部之間該磁場的對稱性可被改善。 因此，該聲音線圈的驅動力被改善，且該聲音線圈的非 垂直振動被降低而改善該隔膜的失真。同時，該聲音線圈的 磁轆與該平板的内壁之間的刮擦現象可被降低。在此處，該 刮擦現象可藉由由於該聲音線圈的滾動模式造成的扭轉振 動而發生。 對於前述具體實施例之微型喇叭1，因為第一點A1與 第一點A2與該虛擬磁扼接觸點γι相隔相同的距離，磁扼 倒角表面24相對於一中央垂直線C傾斜約45。的角度，本 新型並不限於此。也就是說，根據另一具體實施例，當第— 點A1及第二點A2在前述的限制範圍内設置在多個不同的 位置，磁軛倒角表面24相對於該中央垂直線c傾斜成多個 不同角度’除了大約45°的角度之外。同時，磁輛倒角表面 24可具有多種不同的面積。 但是，當第一點A1界定在自該接觸點Y1小於該磁軛 厚度的1/4或大於其3/4之位置處，或該第二點A2界定在自 該接觸點Y1小於該磁輛厚度的1/4或大於其3/4之位置處， 即第一與第二點A1及A2無法達到需要的條件，該倒角表 面之面積過小或過大。因此，無法實現該磁力線之想要的組 態。因此，第一與第二點A1及A2必須滿足上述的條件。 類似於磁輛倒角表面24，在另一具體實施例中，平板倒 角表面44在當第二與弟四點A3及A4被改變成在所需要條 件之内預定的位置時，可具有多種不同的角度及面積。L「 13 雖然磁軛倒角表面24與平板倒角表面44在此具體實施 例中具有平坦表面，本新型並不限於此。例如，磁軛倒角表 面24與平板倒角表面44可具有平滑凸狀曲面。也就是說， 連接第一與第二點A1及A2的線與連接第三與第四點A3及 A4的線除了直線以外可具有凸狀圓弧形狀。 雖然磁軛倒角表面24與平板倒角表面44在此具體實施 例中相對於該中央垂直線C為對稱地設置，本新型並不限於 此。也就是說在另一具體實施例中，磁軛倒角表面24與平 板倒角表面44相對於該中央垂直線C並非對稱地設置。 同時，雖然該等倒角表面在此具體實施例中係設置在該 磁轭與平板之兩侧’本新型並不限於此。例如，該倒角表面 可以設置在該磁輕與該平板之兩側之任一側上。 第6圖及第7圖所示為根據一修正的具體實施例一倒角 表面僅設置在一磁軛或僅設置在一平板之狀態。 也就疋就’第ό圖所示為一倒角表面24a僅設置在一磁 軛20上的狀態。因為此具體實施例之倒角表面24&與前述 具體實施例具有相同的結構與組態，將省略它們重複的說 明。 第7圖所示為一倒角表面44a僅設置在一平板4〇上的 狀態。因為此具體實施例之倒角表&叫與前述具體實施例 具有相同的結構與組態，所以將省略它們重複的說明。 根據本新型之微型·，在該磁性_之_磁力線的 水平區域可被擴充來改善該聲音線圈之驅動力。此外，平板 40之上方部與下方部之間該磁場的對稱性可被改善，以改[盖] M382684 該隔膜的失真，並可降低該聲音線圈與該隔膜的非垂直振 動。 本技術專業人士將可瞭解到在本新型中可進行多種修 正及變化。因此，係要本新型涵蓋對於此新型在所附申請專 利範圍及它們的同等者範疇之内的修正及變化。 【圖式簡單說明】 附屬圖式係包含來提供對於本新型進一步的瞭解，用於 加入並構成本申請案的一部份，圖式係例示本新型之具體實 施例，配合其說明可用於解釋本新型之原理。在圖式當中： 第1圖為一典型微型喇p八的示意剖面透視圖； 第2圖為第1圖之磁力線的流動之示意圖； 第3圖為根據本新型一具體實施例之微型喇η八的示意剖 面透視圖； 第4圖及第5圖所示為在第3圖之微型喇叭中一磁軛與 一平板之主要零件的剖面圖； 第6圖為根據本新型另一具體實施例之微型喇队的示意 剖面圖；及 第7圖為根據本新型另一具體實施例之微型喇认的示意 剖面圖。 【主要元件符號說明】 1 微型制口八 10 框架 15 M382684A Hereinafter, a micro-made p-eight according to the present invention - a specific example will be described in detail with reference to Figs. 3 to 5. _ Figure 3 is a perspective view of a micro-brain i according to an embodiment of the present invention, and Figures 4 and 5 show a magnetic field in Figure 3 A cross-sectional view of the main part of the yoke 2〇 and a flat plate 4〇. The micro horn 1 of this embodiment includes a frame 1 〇; the yoke 2 〇, / 疋 is attached to the frame 1 〇 and has a socket; a permanent magnet 3 〇 is fixed to the receiving groove of the yoke 20 a bottom surface; the flat plate 4 is fixed to an upper surface of the permanent neodymium iron 30; a diaphragm 5〇, wherein an outer periphery thereof is fixed to the pivot frame 10, and a sound coil 60, wherein an upper end thereof is fixed to Diaphragm [50] 9 M382684 ' One of the bottom surfaces. The present invention is characterized by the configuration of the yoke 20 and the flat plate 40, while the remaining components have the same configuration as a typical miniature sub-pi. Therefore, their detailed description will be omitted. Only the characteristic configuration of the present invention will be described in detail below. With the microhorn of this embodiment, a yoke chamfered surface 24 and a flat chamfered surface 44 are respectively disposed at an upper end of the yoke 2's lateral surface 22, and one side of the flat plate 40. An upper end of the surface 42. Here, the lateral surface 22 of the Luguang light 20 faces the lateral surface 42 of the plate 40. The yoke chamfered surface 24 and the flat chamfered surface 44 will be described in detail with reference to Figs. 4 and 5. Figure 4 is a vertical cross-sectional view showing the virtual surface of one of the centers of the flat plate 4 through the micro-horn. Fig. 5 is a partial cross-sectional view showing only the magnetic unit 20 and the flat plate 4 of Fig. 4; The yoke 20 includes a bottom member and a side wall that extends upwardly along the periphery of the bottom member. The chamfered surface 24 is disposed on the upper portion of the inner lateral surface 22 of the side wall. The chamfered surface 24 is disposed on a portion of the lateral surface 22 that contacts the upper surface 23 of the yoke 20. • Referring to Fig. 5, the yoke chamfered surface 24 is along a predetermined first point Ai on the upper surface 23 of the connecting yoke 2 to a predetermined second point 2 on the lateral surface 22 of the magnetic vehicle 20. Make a line set. The first point Α1 is disposed at a position defined at a position corresponding to about 1/4 of the thickness Yt of the yoke 20, and the horizontal minimum point Y2 is defined to correspond to the contact point Y1 (ie, the yoke) by a virtual yoke The lateral line 22 of 20 and the line of extension of the upper surface 23 are in contact with each other) between a horizontal maximum point Y3 at a position of about 4/3 of the thickness Yt in an outward direction. The second point A2 is disposed at a vertical minimum point Y4 defined at a position corresponding to a thickness of the yoke 2 [ [too M382684' and is defined at a position corresponding to the contact point Y1 by the virtual yoke. Between a vertical maximum point γ5 at a position of about 3/4 of the thickness of the yoke 2〇 in the downward direction. That is, the yoke chamfered surface 24 is three-dimensionally disposed along the side wall of the yoke 2 and along the t-line connecting the first point Α1 to the second point Α2, which is limited in a cross-sectional view. The flat chamfered surface 44 is disposed above a portion of the lateral surface 42 of the flat plate 40. The slab chamfered surface 44 is disposed at a location where the lateral surface 42 contacts one of the planar upper surfaces 44 of the slab. The slab chamfered surface 44 is disposed along a line that connects a predetermined third point A3 to the upper surface of the slab to a predetermined fourth point on the lateral surface 42 of the slab 40. The third point A3 is disposed at a position defined at a position corresponding to about 1/4 of the thickness Pt of the flat plate 4, and the horizontal minimum point is defined to correspond to the contact point P1 (ie, the flat plate 4) by a virtual yoke. The lateral line 42 of the crucible and the line of extension of the upper surface 43 are in contact with each other) between a horizontal maximum point P3 at a position of about 4/3 of the intensive direction Pt in an inward direction. Fourth point • A vertical minimum point P4 defined at a position corresponding to about 1/4 of the thickness pt of the flat plate 40 is defined to correspond to a thickness Pt of the flat plate 40 in a downward direction by the virtual magnetic contact point. At approximately 3/4 of the position - between the vertical maximum point P5. That is, the flat chamfered surface 44 is three-dimensionally disposed along the periphery of the flat plate 4 and along a line connecting the second point A3 to the four points A4, which is confined in a cross-sectional view. For this particular embodiment, the slanted chamfered surface 44 and the yoke chamfering table [face] M38Z684 24 are symmetrically aligned with respect to the center point of the two lateral surfaces that lie across each other. Settings. That is, the chamfered surfaces 24 have the same angle and area. Also in this embodiment, the first point Ai of the yoke chamfered surface 24 is defined at a position corresponding to 1/2 of the thickness Yt of the magnetic pole in the outward direction by the virtual yoke contact point γι. a point, and the second point A2 is a point at which the definition ^ corresponds to a position at which the virtual magnetic contact point Y1 is 1/2 of the thickness of the magnetic pole in the direction of the τ. At the same time, the 'two-point A3 of the flat chamfered surface 44 is defined to correspond to the point of contact by the virtual yoke? a point at the position of the plate thickness Pt^1/2 in the inward direction, and the fourth point A4 of the plate to the angle surface 44 is defined at a position corresponding to the contact point w by the virtual yoke A point at a position that is 1/2 of the thickness of the plate. Therefore, when the yoke 20 has the same thickness as the flat plate 40, the shape of the yoke chamfered surface 22 is symmetrical to the shape of the flat chamfered surface 42. According to the above-described structure, the chamfered surfaces 24 and 44 which face each other are disposed at the upper portions of the magnet 20 and the flat plate 40, respectively, and the horizontal portion of the magnetic lines of force can be expanded in a magnetic gap. That is to say, for the typical micro-remaining P8, since the magnetic fiber and the upper end of the flat plate are substantially perpendicular to each other, the horizontal region of the magnetic field line constituting one magnetic circuit cannot be sufficiently fixed in a magnetic gap and is lowered. The symmetry of the magnetic field between the upper portion and the lower portion of the flat plate 40. Therefore, the limitation is that the driving force for operating the voice coil is lowered and a non-vertical movement occurs. The value is according to the present invention, since the chamfered surfaces 24 and 44 are respectively disposed on the yoke 20 and the flat plate 40, the aforementioned typical limitations can be solved. At the same time, the horizontal area of the magnetic lines of force in the magnetic gap of the M382684 can be expanded, and the symmetry of the magnetic field between the upper and lower portions of the flat plate 4 can be improved. Therefore, the driving force of the voice coil is improved, and the non-vertical vibration of the voice coil is lowered to improve the distortion of the diaphragm. At the same time, the scratching phenomenon between the magnetic coil of the sound coil and the inner wall of the flat plate can be lowered. Here, the scratching phenomenon can occur by torsional vibration due to the rolling mode of the sound coil. With the microhorn 1 of the foregoing embodiment, since the first point A1 and the first point A2 are separated from the virtual magnetic contact point γ1 by the same distance, the magnetic chamfered surface 24 is inclined by about 45 with respect to a central vertical line C. In view of the above, the present invention is not limited to this. That is, according to another specific embodiment, when the first point A1 and the second point A2 are disposed at a plurality of different positions within the aforementioned limit range, the yoke chamfering surface 24 is inclined with respect to the central vertical line c A plurality of different angles 'except for an angle of approximately 45°. At the same time, the magnetic chamfered surface 24 can have a variety of different areas. However, when the first point A1 is defined at a position from the contact point Y1 which is less than 1/4 of the thickness of the yoke or greater than 3/4 thereof, or the second point A2 is defined to be smaller than the magnetic point from the contact point Y1 At a position 1/4 of the thickness or more than 3/4 of the thickness, that is, the first and second points A1 and A2 fail to reach the required condition, and the area of the chamfered surface is too small or too large. Therefore, the desired configuration of the magnetic lines of force cannot be achieved. Therefore, the first and second points A1 and A2 must satisfy the above conditions. Similar to the magnetic chamfered surface 24, in another embodiment, the flat chamfered surface 44 can have multiple when the second and fourth points A3 and A4 are changed to a predetermined position within the desired conditions. Different angles and areas. L" 13 Although the yoke chamfered surface 24 and the flat chamfered surface 44 have flat surfaces in this embodiment, the present invention is not limited thereto. For example, the yoke chamfered surface 24 and the flat chamfered surface 44 may have smoothness. A convex curved surface, that is, a line connecting the first and second points A1 and A2 and a line connecting the third and fourth points A3 and A4 may have a convex circular arc shape except for a straight line. 24 and the flat chamfered surface 44 are symmetrically disposed relative to the central vertical line C in this particular embodiment, and the present invention is not limited thereto. That is, in another embodiment, the yoke chamfered surface 24 is The flat chamfered surface 44 is not symmetrically disposed with respect to the central vertical line C. Meanwhile, although the chamfered surfaces are disposed on both sides of the yoke and the flat plate in this embodiment, the present invention is not limited thereto. For example, the chamfered surface may be disposed on either side of the magnetic light and the two sides of the flat plate. Figures 6 and 7 show a chamfered surface disposed only in a magnetic field according to a modified embodiment. The yoke is only placed in the state of a flat plate. The second figure shows a state in which a chamfered surface 24a is only disposed on a yoke 20. Since the chamfered surface 24& of this embodiment has the same structure and configuration as the foregoing embodiment, The repeated description thereof is omitted. Fig. 7 shows a state in which a chamfered surface 44a is provided only on a flat plate 4b. Since the chamfering table & of this embodiment has the same structure as the foregoing embodiment Configuration, so the repeated description will be omitted. According to the miniature of the present invention, the horizontal area of the magnetic field line can be expanded to improve the driving force of the sound coil. Further, the upper part and the lower part of the flat plate 40 The symmetry between the magnetic field can be improved to modify the distortion of the diaphragm and to reduce the non-perpendicular vibration of the diaphragm and the diaphragm. Those skilled in the art will appreciate that it is possible in the present invention. A variety of modifications and variations are possible. Therefore, the present invention is intended to cover modifications and variations within the scope of the appended claims and their equivalents. A further understanding of the present invention is provided to provide a part of the present application, and the drawings illustrate the specific embodiments of the present invention, and the description thereof may be used to explain the principles of the present invention. 1 is a schematic sectional perspective view of a typical micro-Ra p8; FIG. 2 is a schematic view showing the flow of magnetic lines of force in FIG. 1; FIG. 3 is a schematic sectional perspective view of a micro-Ln-8 according to an embodiment of the present invention. Figure 4; Figure 4 is a cross-sectional view showing a main part of a yoke and a flat plate in the micro-horn of Figure 3; Figure 6 is a view of a miniature racquet according to another embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 7 and Fig. 7 are schematic cross-sectional views of a micro-recognition according to another embodiment of the present invention. [Description of main components] 1 Micro-mouth 8 frame 15 M382684
20 磁輛 22 内部側向表面 23 上表面 24 磁輛倒角表面 24a 倒角表面 30 永久磁鐵 40 平板 42 側向表面 43 上表面 44 平板倒角表面 44a 倒角表面 50 隔膜 60 聲音線圈 100 微型喇p八 101 框架 102 磁輛 103 永久磁鐵 104 平板 105 聲音線圈 106 隔膜 107 内侧部 108 邊界部 109 外侧部20 Magnetic vehicle 22 Internal lateral surface 23 Upper surface 24 Magnetic chamfered surface 24a Chamfered surface 30 Permanent magnet 40 Flat plate 42 Lateral surface 43 Upper surface 44 Flat chamfered surface 44a Chamfered surface 50 Separator 60 Sound coil 100 Miniature p 八 101 frame 102 magnetic vehicle 103 permanent magnet 104 flat plate 105 voice coil 106 diaphragm 107 inner portion 108 boundary portion 109 outer portion