TW478287B - Moving coil driver - Google Patents

Abstract

A moving coil loudspeaker driver has at least one pair of coils (18, 20) on a former (16). The coils move between pole pieces (28, 30) of a permanent magnet system (28, 30, 32, 34). The pair(s) of coils (18, 20) are oppositely wound and closely spaced to reduce the combined inductance of the coils.

Description

478287 五、發明說明（1) 本發明相關於移動線圈驅動器或馬達並特定但不排他性 的關於分配模式面板·的喇σ八的驅動器，例如在我們的國際 專利中請案W 0 9 7 / 0 9 8 4 2。 在設計移動線圈喇。八的驅動器時，線圈捲繞的電感減少 可用來驅動喇0八隔膜的有效力量。這是因為與直流電阻串 連的電感增加較高頻率的阻抗。 申請日期為1988年11月8日之KOYBASHI的美國專利 4，7 8 3，8 2 4，關於藉由利用第二磁鐵來增加語音線圈組 件，其係加入來提供磁性屏蔽，的有效輸出。縫隙間的距 離加以設定π如此不會彼此相互影響π 。此配置降低在較低 頻率時的大阻抗峰值；然而出現的資料建議在那些頻率上 較高電感於較高頻率特性時（> 1 kHζ )的較高阻抗。 更多的先前技藝在於1 9 9 8舉辦，A E S對制A的討論會論 文中討論，Douglas Button及Mark Gander 之標題為"The478287 V. Description of the invention (1) The present invention relates to a moving coil driver or motor and specifically but not exclusively a driver for a σσ of a distribution mode panel, for example, in our international patent application W 0 9 7/0 9 8 4 2. La design in moving coils. When the driver is eight, the inductance of the coil winding is reduced, which can be used to drive the effective force of the diaphragm. This is because the inductance in series with the DC resistance increases the impedance at higher frequencies. U.S. Patent No. 4,7 8 3,8 2 4 of KOYBASHI, with a filing date of November 8, 1988, relates to the use of a second magnet to increase the voice coil assembly, which is added to provide an effective output for magnetic shielding. Set the distance between the gaps π so that they do not affect each other π. This configuration reduces large impedance peaks at lower frequencies; however, the information that appears suggests higher impedance at those frequencies with higher inductance at higher frequency characteristics (> 1 kHζ). More previous skills were held in 1898, discussed by A E S on the discussion of system A. The titles of Douglas Button and Mark Gander are " The

Dual Coil Loudspeaker"。大部分的先前技藝相關於有間 隔大約25mm的線圈之裝置，其賦與微弱的互感而有效的電 感連結則經由磁極系統做到。 較早期的驅動設計中，磁性系統不會進入飽和，這樣的 話如果被磁極中的旋渦電流損耗減弱的話，則出現某些含 鐵的磁性連結。現代的磁鐵系統通常會進入飽和，當磁極 不再提供任何顯著的線圈連結時。 本發明之一目的在改善一喇叭的移動線圈驅動器之效 能。 根據本發明，一移動線圈喇°八驅動器，包含Dual Coil Loudspeaker ". Most of the previous techniques are related to devices with coils spaced approximately 25mm apart. Their effective inductive connection imparts weak mutual inductance through a magnetic pole system. In earlier drive designs, the magnetic system did not go into saturation, so that if the eddy current losses in the poles were reduced, some ferrous magnetic connections would appear. Modern magnet systems usually go into saturation when the magnetic poles no longer provide any significant coil connection. An object of the present invention is to improve the performance of a moving coil driver for a speaker. According to the present invention, a moving coil driver includes:

O:\64\64095.ptd 第4頁 478287 五、發明說明 一語音 至少在 20 )，每 ί 繞，這對 組合電感 相較於空 一永久 置相鄰於 間隔， 以充分的 而不用透 向地捲繞 消。因此 降低。 優異的 度）。特ί 較於先前 線圈的 圈長度為 極部份。 傾向的， 勵平板中 音線圈固 彎曲擺動 (2) 線圈線圈架（1 6 )， 線圈架上（1 6 ) —對相互軸狀間隔的線圈（丨8、 时的一個線圈（18)與另外的線圈（2〇)反向的捲 線圈（1 8、2 0 )間隔開一預定的距離，如此線圈的 降低至少5%，在具體實例中至少25%或甚至40%， 間分隔開的線圈以及 磁鐵系統（28、30、32、34)，其具有相反極性配 個別線圈（1 8、2 0 )的磁極部份（2 8、3 0 )。 也就是，每對的線圈覆面端點間的軸狀縫隙，可 小到可以直接連結在兩個線圈之間以提供互感， 過磁極部份間接的連接。藉由相反於第一線圈方 第二線圈’線圈的某些組合（加總）電感可以被取 ’線圈的反相連接可達成所希望的系統整體電感 線圈間隔可以實質的等於或小於線圈的直徑（寬 優異的線圈間隔小於2mm。線圈的緊密間隔，相 技藝的’可導致有效線圈電感的有用的降低。 緊在、間隔可能需要線圈的軸運動限制在相較於線 小，如此一個線圈不會接近另外線圈所傾向的磁 如果線圈要接近另外的磁極部份，則力量相反於 $將是非常不線性的反應。發明者瞭解到用來激 •曲擺動的驅動器不管怎樣的以此方式限制。往 疋在此平板上軸狀地支撐語音線圈而給予對平板 所需要的運動遠遠小於給予傳統瓣形喇。八運動所 478287 五、發明說明（3) 需要的運動。因此，可以這種烤曲擺動能量轉換器達成到 目前而止所可能的更·緊密線圈分隔以及因而組合電感的更 大降低。 如果希望的話，每一線圈中可以只捲繞單一層的線，來 降低線圈在其中移動的空氣縫隙的寬度。 一對以上的反相配置的線圈可以提供在線圈架上，每一 個結合磁鐵的個別磁極部份。磁極部份的極性最好是由結 合線圈的捲繞方向決定。磁鐵系統還可以包含一或多個非 磁性間隔。O: \ 64 \ 64095.ptd Page 4 of 478287 V. Description of the invention A voice is at least 20) per winding. Compared to the empty one, the pair of inductors is permanently adjacent to the space, so as to be sufficient without passing through. Ground winding eliminates. It is therefore reduced. Excellent degree). The length of the coil is extremely polar compared to the previous coil. Tendantly, the mid-range coil of the excitation plate is fixedly bent and swung (2), the coil bobbin (16), and the coil bobbin (1 6) is a pair of axially spaced coils (8, one coil (18) and another The coils (20) of the opposite coils (18, 20) are spaced a predetermined distance apart, so that the coils are reduced by at least 5%, and in specific examples at least 25% or even 40%, separated by The coil and magnet system (28, 30, 32, 34) have opposite poles (28, 30) with opposite poles (18, 20). That is, each pair of coil covers the end points The axial gap between them can be small enough to be directly connected between the two coils to provide mutual inductance, and indirectly connected through the magnetic poles. By contrast to some combinations of the first coil and the second coil, ) Inductance can be taken. The inverse connection of the coil can achieve the desired system. The overall inductance coil interval can be substantially equal to or smaller than the diameter of the coil. Useful reduction of effective coil inductance. The interval may require that the axis of the coil is limited to be smaller than the wire, so that one coil will not approach the magnetic tendency of another coil. If the coil is to approach another magnetic pole part, the force opposite to $ will be a very non-linear response The inventors learned that the driver used to excite and flex the swing was limited in this way anyway. On this tablet, the support for the voice coils on the tablet is required to give the tablet much less motion than to give a traditional petal. Eight Movement Institute 478287 V. Explanation of the invention (3) The required movement. Therefore, this kind of grilled swing energy converter can achieve the tighter coil separation and thus a greater reduction of the combined inductance that is possible until now. If desired In this case, only a single layer of wire can be wound in each coil to reduce the width of the air gap in which the coil moves. A pair of coils in reverse configuration can be provided on the bobbin, each of which combines the individual magnetic poles of the magnet The polarity of the magnetic pole part is best determined by the winding direction of the combined coil. The magnet system can also contain one or more non-magnetic Sexual interval.

磁極部份直徑可以不大於磁鐵本身以降低不希望的磁場 干擾。磁鐵系統可以有磁性飽和的磁極部份。 線圈的間隔可以小於每一線圈軸長度的兩倍最好小於 1.4° 本發明以圖解說明，舉例方式，在隨附圖示中，其中 圖1 a為N轉的線圈， 圖lb為圖la的線圈分割成兩個N/2轉的線圈， 圖2為根據本發明的透過第一具體實例的移動線圈驅動 器的片段橫切面圖； 圖3為根據本發明的透過第二具體實例的移動線圈驅動 器的片段橫切面圖；The diameter of the magnetic pole part can be no larger than the magnet itself to reduce unwanted magnetic field interference. The magnet system may have magnetically saturated magnetic pole portions. The interval between the coils can be less than twice the length of each coil axis, preferably less than 1.4 °. The present invention is illustrated by way of example, in the accompanying drawings, where FIG. 1 a is a coil of N rotation, and FIG. The coil is divided into two N / 2-turn coils. FIG. 2 is a fragmentary cross-sectional view of a moving coil driver passing through a first specific example according to the present invention; FIG. 3 is a moving coil driver passing through a second specific example according to the present invention Cross-sectional view of the fragment;

圖4為根據本發明的透過第三具體實例的移動線圈驅動 器的片段橫切面圖。 在圖la中線圈（10)有100轉的線（11)。具有下面的參 數：N = 100，長度3.mm，内半徑12.8 mm及外半徑14 mm以Fig. 4 is a fragmentary cross-sectional view of a moving coil driver through a third embodiment according to the present invention. In FIG. 1a, the coil (10) has a 100-turn wire (11). Has the following parameters: N = 100, length 3.mm, inner radius 12.8 mm and outer radius 14 mm

478287 五、發明說明（4) 及因而利用Wei sby公式（參閱下面），電感l的計算值為 〇 · 4 3 9 mil。計算電感的替代方法為利用有限元素分析來模 塑化此系統。有限元素模型給此電感的值〇 . 4 6 〇 1 m II。 每個線圈的電感（L)可以用weisby公式加以計算： K =--- / + 0,9y + 0.32y + 0-84 - jj〇 4ττΛΟ'7 Η/m r-^(ri +Γι) t = r2 - η A = πΓ2 其中N為線圈中的轉數 1為線圈長度 A為線圈内半徑 r2為線圈外半徑 五十轉線（1 1 )的兩個 圖1 b中，圖1 a的線圈已經被分割成 線圈（1 2、1 4 )。 假設兩個線圈相離足夠遠以防止連 值等於個別線圈的和，就是L=2*011 mH = 如果線圈設定分開4 mm，可 〇· 22 mH。 限元辛模切預、、丨太 預^某些互感的連結。；^ 限型預測本糸統的電感值為。349 Μ : :i m轉？如’藉由將線圈的捲繞反向，第線: 的電感值可以實質的抵消第一線 第一、、泉g 系統的電感值為〇· 1 202 mH，Α 。此模型預須 共大約疋未分割線圈電感值 478287 修正 年// 月 7 曰 修正 五、發明純科一^— 的四分之一。 線圈電感值在高頻時變得很重要。例如，在利用有限元 素模型的1 0 k Η z以及在先前範例中的相同參數，單一線圈 的電感值以及二個帶有連結的一半線圈為0 . 6 9 4 m Η及 0 . 5 7 3 m Η。當電流在兩個一半線圈之一中反轉時，系統的 整體電感值為0 . 1 5 9 in Η。再一次的此系統的電感值降到大 約四分之一。 本系統中可以加入鋼成份，例如，如果線圈要做為如圖 2到4的電磁力量制動器。鋼成份的出現可能使得電感值上 升，但預期無鋼成份的系統中類似比例的降低。 圖2顯示一移動線圈喇。八驅動器，其包含一語音線圈架 (1 6 )、線圈架（1 6 )上兩個互相軸狀間隔的線圈（1 8、2 0 )， 與其他線圈（1 8 )反向捲繞的一個線圈（2 0 )以及永久磁鐵組 件（2 2 )。此（.）及（X )符號指示出個別線圈中電流環繞線圈 軸流動的不同方向。如圖1 b所示，線圈於端子（1 5 )間串連 的連結在一起，以此方式，通過線圈的電流以相反的方向 通過線圈。黏在面板（3 9 )上的線圈架可以支撐共振彎圈擺 動模式。 因為線圈（1 8 )及（2 0 )以相反方向捲繞，作用於每一段移 動線圈組件的磁場必須反轉。達成這個是利用單一磁鐵 (22)驅動遍及厚度磁化的碟狀磁鐵（32)的兩個放射氣體縫 隙（2 4、2 6 )，一個（2 4 )來自北面，經由頂板或磁極部份 (28)，而第二個（26)來自南面，經由底板或磁極部份 (3 0 )。這兩個放射氣體縫隙共用一其完成此磁場電路的共478287 V. Description of the invention (4) and thus using the Wei sby formula (see below), the calculated value of the inductance l is 0.49 mil. An alternative method of calculating inductance is to use finite element analysis to model this system. The finite element model gives this inductance a value of 0.46 m 2. The inductance (L) of each coil can be calculated using the Weisby formula: K = --- / + 0,9y + 0.32y + 0-84-jj〇4ττΛΟ'7 Η / m r-^ (ri + Γι) t = r2-η A = πΓ2 where N is the number of revolutions in the coil 1 is the coil length A is the inner radius of the coil r2 is the outer radius of the coil fifty turns (1 1) The two coils in Figure 1b, Figure 1a Has been divided into coils (1 2, 1 4). Assuming the two coils are far enough apart to prevent the connection value from being equal to the sum of the individual coils, it is L = 2 * 011 mH = If the coils are set 4 mm apart, it can be 〇 · 22 mH. Limiting element die-cutting, premature, premature, and premature ^ certain mutual inductive links. ; ^ Limit type predicts the inductance value of this system. 349 Μ:: i m turn? For example, by reversing the winding of the coil, the inductance value of the second line: can substantially offset the first line. The inductance value of the first, spring g system is 0.1202 mH, A. This model is expected to have a total of approximately 478287 of the undivided coil inductance value. Coil inductance becomes important at high frequencies. For example, using the 10 k Η z of the finite element model and the same parameters in the previous example, the inductance value of a single coil and two half coils with links are 0.6 9 4 m Η and 0.5 5 3 m Η. When the current is reversed in one of the two half coils, the overall inductance of the system is 0.159 in. Once again, the inductance of this system drops to about a quarter. Steel components can be added to this system, for example, if the coil is to be used as an electromagnetic force brake as shown in Figures 2 to 4. The presence of steel components may increase the inductance value, but a similar reduction is expected in systems without steel components. Figure 2 shows a moving coil. Eight drivers, including a voice coil bobbin (16), two coils (18, 20) spaced axially from each other on the coil bobbin (16), and one wound in the opposite direction to the other coils (18) The coil (20) and the permanent magnet assembly (22). The (.) And (X) symbols indicate the different directions of current flow around the coil axis in the individual coils. As shown in Figure 1b, the coils are connected in series between the terminals (15). In this way, the current through the coils passes through the coils in the opposite direction. The coil bobbin adhered to the panel (3 9) can support the resonant bending coil swing mode. Because the coils (18) and (20) are wound in opposite directions, the magnetic field acting on each moving coil component must be reversed. This is achieved by using a single magnet (22) to drive the two radiating gas gaps (2, 4, 6) across the thickness-magnetized dish magnet (32), one (2 4) from the north, via the top plate or the magnetic pole portion (28 ), And the second (26) comes from the south, via the base plate or magnetic pole section (30). These two radiating gas gaps share a common circuit that completes this magnetic field circuit.

O:\64\64095.ptc 第8頁 478287 ! 修正 減 ! "Βζλ 曰 修正 j W7TJ / 、夸务曰月言曰月 （0*♦—---------------------------------------—一」 同外套筒（3 4 )。磁力線的線顯示為粗體箭頭。非磁性的外 殼（3 6 )支撐與磁組件（2 2 )同中心的外套筒以及兩個磁極部 份（2 8、3 0 )。 此線圈可以小型軸狀間隔地配置因為語音線圈驅動平板 中的共振彎曲擺動不會有大的偏移，也就是，不會有大幅 振盪的振動。這樣的緊密間隔在要驅動傳統瓣狀喇ϋ八隔膜 的先前技藝線圈是不可能的。這樣的線圈必須有足夠的間 隔，如此線圈的明顯移動不會使一對中的一個線圈進到要 驅動此對中另外線圈的磁極部份的區域内。因此，電感值 的大量降低可利用這個技術做到。 雖然兩個空氣縫隙（2 4、2 6 )為串連的，每一個可藉由所 用的線圈線來降低，因為它可以只用單一層的線（1 1 )。當 然，可以使用更多的層，如果磁場有足夠的強度。 磁鐵、平板及套筒材料為那些在一般磁鐵系統中發現用 來移動喇叭的。熟習本技藝的人將可以決定出最佳化磁鐵 效能的正確尺寸以及必要間隙，但是在此呈現的拓撲將產 生低值的總線圈電感值。 可以從圖示中看到線圈（1 8、2 0 )的間隔相當緊密。想像 例如本發明舉例的驅動器可在一系統中良好的提供，其中 驅動器的整體高度大約6 mm，而線圈（1 8、2 0 )間隔為2 mm 或更少。 雖然圖2顯示一磁鐵及兩個線圈，本發明可以擴充至多 個線圈及磁鐵。圖3的具體實例顯示一移動線圈喇。八驅動 器，其包含一語音線圈架（3 8 )，兩對（4 0、4 2 )互相軸間隔O: \ 64 \ 64095.ptc Page 8 478287! Correction and subtraction! &Quot; Bζλ said to modify j W7TJ /, to praise the words of the month (0 * ♦ —------------- --------------------------— 一 "Same as the outer sleeve (3 4). The lines of magnetic lines of force are shown as bold arrows. Non-magnetic The outer shell (3 6) supports the outer sleeve which is concentric with the magnetic component (2 2) and two magnetic pole parts (28, 3 0). This coil can be arranged in small shafts because the voice coil drives the resonance in the flat plate There is no large deviation in the bending swing, that is, there is no large oscillating vibration. Such close spacing is impossible in the prior art coils that drive the traditional petaloid diaphragms. Such coils must be sufficient Such that the apparent movement of the coils does not cause one coil of a pair to enter the area where the magnetic pole portion of the other coils of the pair is to be driven. Therefore, a large reduction in inductance can be achieved using this technique. Although two The air gaps (2, 4, 6) are connected in series, each of which can be reduced by the coil wire used, because it can only use a single layer of wire (1 1). Of course You can use more layers if the magnetic field has sufficient strength. The materials of magnets, plates and sleeves are those found in general magnet systems to move speakers. Those skilled in the art will be able to determine the optimal magnet performance The correct dimensions and necessary clearances, but the topology presented here will produce low total coil inductance values. As can be seen from the illustration, the coils (18, 20) are spaced fairly closely. Imagine, for example, the driver of the present invention It can be well provided in a system in which the overall height of the driver is about 6 mm, and the coils (18, 20) are spaced at 2 mm or less. Although FIG. 2 shows a magnet and two coils, the present invention can be extended To a plurality of coils and magnets. The specific example of FIG. 3 shows a moving coil puller. Eight drivers include a voice coil bobbin (3 8), and two pairs (40, 4 2) are axially spaced from each other.

O:\64\64095.ptc 第9頁 478287 五、發明說明（7) 線圈（40a、40b)(42a、42b)在線圈架（38)上以及一永久磁 鐵組件（44)。第一對’線圈（40)包含一與另外線圈（40a)反 向捲繞的線圈（4 0 b )。類似的，第二對線圈（4 2 )包含一與 另外線圈（42a)反向捲繞的線圈（42b)。線圈（40a)及（42a) 相同方向的捲繞。（·）與（X)符號指示個別線圈中不同方向 的電流流動。 因為線圈（40b)與線圈（40a)反向的捲繞而線圈（42b)與 線圈（42a)反向的捲繞，作用在每段移動線圈組件上的磁 場必須相反。這藉由利用三個磁鐵（46、48、50)及四個磁 極部份或平板（52、54、56、58)組成完整的磁鐵組件 (44)而做到。這個磁鐵組件包含替代層的磁極部份與磁 鐵。磁極部份（5 4 )接觸到兩個磁鐵（4 6、4 8 )而對磁鐵加以 配置’如此使得兩個磁鐵的南極都與磁極部份相鄰。類似 的’磁極部份（56)與兩個磁鐵（48、50)的北面相鄰。 磁鐵組件驅動四個空氣縫隙（6 〇、6 2、6 4、6 6 )。第—個 空氣縫隙（6 0 )由磁鐵（4 6 )的北面驅動，經由磁極部份 (52) ’弟一個（62)由兩個磁鐵（46、48)的南面驅動，經由 磁極部份（54)，第三個藉由兩個磁鐵（48、50)的北面驅 動’經由磁極部份（5 6 )而第四個藉由磁鐵（5 〇 )的南面驅 動’經由磁極部份（5 8 )。放射狀空氣縫隙共用共同的外套 筒（6 8 )，其完成磁性電路。磁力線的線顯示為粗體箭頭。 非磁性外殼（7 0 )支撐與磁鐵及磁極部份同中心的外套筒。 圖4顯示圖3組件的變化，其只包含了兩個磁鐵（72、 74) ’由非磁性間隔器（76)分開的。此組件包含一語音線O: \ 64 \ 64095.ptc Page 9 478287 V. Description of the invention (7) The coil (40a, 40b) (42a, 42b) is on the coil bobbin (38) and a permanent magnet assembly (44). The first pair of coils (40) includes a coil (40b) wound in the opposite direction to the other coil (40a). Similarly, the second pair of coils (42) includes a coil (42b) wound in the opposite direction to the other coil (42a). The coils (40a) and (42a) are wound in the same direction. The (·) and (X) symbols indicate current flowing in different directions in the individual coils. Because the coil (40b) is wound in the opposite direction to the coil (40a) and the coil (42b) is wound in the opposite direction to the coil (42a), the magnetic field acting on each moving coil component must be opposite. This is done by using three magnets (46, 48, 50) and four pole sections or flat plates (52, 54, 56, 58) to form a complete magnet assembly (44). This magnet assembly contains the magnetic pole portion of the replacement layer and the magnet. The magnetic pole part (5 4) contacts the two magnets (46, 4 8) and arranges the magnets' so that the south pole of the two magnets is adjacent to the magnetic pole part. A similar 'magnetic pole portion (56) is adjacent to the north of the two magnets (48, 50). The magnet assembly drives four air gaps (60, 6, 2, 6, 4, 6). The first air gap (60) is driven by the north side of the magnet (46), through the magnetic pole part (52), and the second one (62) is driven by the south side of the two magnets (46, 48), and through the magnetic pole part ( 54), the third is driven by the north side of the two magnets (48, 50) 'via the magnetic pole part (56) and the fourth is driven by the south side of the magnet (50)' via the magnetic pole part (5 8 ). The radial air gap shares a common outer sleeve (68), which completes the magnetic circuit. The lines of magnetic lines of force are shown as bold arrows. The non-magnetic casing (70) supports an outer sleeve which is concentric with the magnet and the magnetic pole part. Fig. 4 shows a variation of the assembly of Fig. 3, which comprises only two magnets (72, 74) 'separated by a non-magnetic spacer (76). This component contains a voice line

第10頁 478287 五、發明說明（8) 圈架（7 8 )’兩對（8 0、8 2 )在線圈架（7 8 )上互相軸間隔的線 圈（80a、80b)、（82 a’、82b)以及一永久磁鐵組件（84)。第 一對線圈（8 0 )包含一與另外線圈（8 〇 a )反向捲繞的線圈 (80b),。類似的，第二對線圈（82)包含一與另外線圈（82a) 反向捲繞的線圈（82b)。線圈（8〇a)及（82a)相同方向的捲 繞。（、·）與（X )符號指示個別線圈中不同方向的電流流動。 此磁鐵組件驅動四個空氣縫隙（8 6、8 8、9 〇、9 2 )。第一 個空氣縫隙（86)由磁鐵（72)的北面驅動，經由磁極部份 (9 4 )’第二個（8 8 )藉由磁鐵（7 2 )的南面，經由磁極部份 (9 6 ) ’第二個藉由磁鐵（7 4 )的北面，經由磁極部份（9 8 )而 第四個藉由磁鐵（7 4 )的南面，經由磁極部份（丨〇 〇 )。放射 的空氣縫隙共用一共同的外套筒（1〇2)，其完成磁性電 路。磁力線的線顯示為粗體箭頭。非磁性外殼（丨〇 4 )支撐 與磁鐵及磁極部份同中心的外套筒。 取代串連的配置線圈，也可以配置單獨線圈有分別的端 子（1 5 )’並連接線圈以便共同的驅動線圈來得到與環繞一 對的線圈軸相反方向電流流動的相同結果。這可以，例如 藉由並聯的連結線圈而做到。 本發明因此提供簡單的方法及裝置來改善喇叭用的移動 線圈驅動器效能。此喇叭可以是傳統的，也就是，瓣狀 的，或者可以是共振平板的，例如我們的審查中之國際申 請案W 0 9 7 / 0 9 8 4 2中所說明的那種。Page 10 478287 V. Description of the invention (8) Ring frame (7 8) 'Two pairs (80, 8 2) of the coils (80a, 80b), (82 a') spaced axially from each other on the coil frame (7 8) 82b) and a permanent magnet assembly (84). The first pair of coils (80) includes a coil (80b) wound in the opposite direction to the other coil (80a). Similarly, the second pair of coils (82) includes a coil (82b) wound in the opposite direction to the other coil (82a). The coils (80a) and (82a) are wound in the same direction. The (, ·) and (X) symbols indicate current flowing in different directions in the individual coils. This magnet assembly drives four air gaps (86, 88, 90, 92). The first air gap (86) is driven by the north side of the magnet (72), via the magnetic pole portion (9 4) ', the second (8 8) by the south side of the magnet (7 2), and via the magnetic pole portion (9 6 ) 'The second via the north of the magnet (7 4), via the magnetic pole part (9 8) and the fourth via the south of the magnet (7 4), via the magnetic pole part (丨 〇〇). The radiated air gap shares a common outer sleeve (102), which completes the magnetic circuit. The lines of magnetic lines of force are shown as bold arrows. The non-magnetic casing (丨 〇 4) supports an outer sleeve which is concentric with the magnet and the magnetic pole part. Instead of arranging the coils in series, it is also possible to arrange individual coils with separate terminals (1 5) 'and connect the coils to drive the coils in common to obtain the same result as the current flowing in the opposite direction around the coil axes of a pair. This can be done, for example, by connecting coils in parallel. The present invention therefore provides simple methods and devices to improve the performance of moving coil drivers for horns. This horn can be traditional, that is, petal-shaped, or it can be a resonant plate, such as the one described in our international application under review W 0 9 7/0 9 8 4 2.

O:\64\64095.ptd 第11頁 478287 _________ m. ^ >cl _A «915^7^1 办年"月7曰 修正 五、發明說明; 元件符號說明O: \ 64 \ 64095.ptd Page 11 478287 _________ m. ^ ≫ cl _A «915 ^ 7 ^ 1 Office Year " Month 7th Amendment 5. Description of the invention; Description of component symbols

10 線圈 11 線 12、 14 線圈 15 端 子 16 語音 線圈 架 18、 20 線 圈 22 單一 磁鐵 (永久磁鐵組件） 24、 26 放射 氣體 縫隙 28 ^ 30 磁 極 部 份 3 2 碟狀 磁鐵 34 共 同 外 套 筒 36 外磁 性的 外殼 38 語 音 線 圈 架 39 面板 40、 42 對 線 圈 40a 、4 0 b、4 2 a、 42b 線 圈 44 永 久 磁 鐵 組 件 46、 48 >50 磁鐵 52 ^ 54 >56、 58 磁極 部 份或 平板 60 > 62 、64、 66 空氣 縫 隙 68 共 同 外 套 筒 70 非磁 性外 殼 72 > 74 磁 鐵 76 非磁 性間 隔器 78 語 音 線 圈 架 80 ^ 82 對線 圈 8 0a 、8 0 b、8 2 a、 82b 線 圈 84 永 久 磁 鐵 組 件 86 > 88 、90、 92 空氣 縫 隙 94、 96 、98、 100 磁極部份 102 共 同 的 外 套 筒 104 非磁 性外 殼 478287 修正 案號 89108617 圖式瓦~~~ 鳜tn10 Coil 11 Wire 12, 14 Coil 15 Terminal 16 Voice coil bobbin 18, 20 Coil 22 Single magnet (permanent magnet assembly) 24, 26 Radiation gas gap 28 ^ 30 Magnetic pole part 3 2 Disc magnet 34 Common outer sleeve 36 outer Magnetic case 38 Voice coil bobbin 39 Panel 40, 42 pair coil 40a, 40b, 4 2a, 42b coil 44 permanent magnet assembly 46, 48 > 50 magnet 52 ^ 54 > 56, 58 magnetic pole part or flat plate 60 > 62, 64, 66 air gap 68 common outer sleeve 70 non-magnetic housing 72 > 74 magnet 76 non-magnetic spacer 78 voice coil holder 80 ^ 82 pair of coils 8 0a, 8 0 b, 8 2 a, 82b Coil 84 Permanent magnet assembly 86 > 88, 90, 92 Air gap 94, 96, 98, 100 Magnetic pole part 102 Common outer sleeve 104 Non-magnetic housing 478287 Amendment number 89108617 Schematic tile ~~~ 鳜 tn

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Claims (1)

478287 轉 t號 Μ 89108617 年//月夕曰 修正 1 . 一種移動線圈喇°八驅動器，其包含： 一語音線圈架ΓΓ6 Γ 7 —— 至少一對在線圈架（1 6 )上的互相軸間隔的線圈（1 8、 2 0 )，線圈（1 8 )每一對中與另外的線圈（2 0 )反向捲繞的一 個線圈（1 8 )，這對線圈（1 8、2 0 )被間隔分開一預定距離， 如此線圈的組合電感可以降低至少5 %，相較於空間分開的 線圈，以及 一永久性磁鐵系統（2 8、3 0、3 2、3 4 )，其有配置相鄰於 個別線圈（1 8、2 0 )的相反極性之磁極部份（2 8、3 0 )。 2. 如申請專利範圍第1項之移動線圈喇。八驅動器，其中 每一對的線圈配置的足夠緊密間隔，以相較於空間分開的 線圈降低線圈的組合電感至少2 5 %。 3. 如申請專利範圍第1項之移動線圈喇。八驅動器，其中 線圈（1 8、2 0 )串聯在一起，如此通過此串聯連接線圈的電 流在這個線圈或每一對線圈的線圈中產生相反的磁場。 4. 如申請專利範圍第2項之移動線圈喇。八驅動器，其中 線圈（1 8、2 0 )串聯在一起，如此通過此串聯連接線圈的電 流在這個線圈或每一對線圈的線圈中產生相反的磁場。 -5. 如申請專利範圍第1至4項中任一項之移動線圈喇队 驅動器，其中一單一層線（1 1 )捲繞在每個線圈（1 8、2 0 ) ^ 6. 如申請專利範圍第1至4項中任一項之移動線圈喇队 驅動器，其中一對以上（4 0、4 2、8 0、8 2 )相對配置的線圈 (T〇7^ 4 0 b > 42a > 42b、80a、80b、82a、82b)提供在該線478287 Turn t number M 89108617 // Yue Xi Yue Amendment 1. A moving coil lao eight driver, which includes: a voice coil frame ΓΓ6 Γ 7-at least a pair of mutually spaced axes on the coil frame (1 6) Coil (18, 20), each pair of coils (18) is a coil (18) wound in the opposite direction to the other coil (20), and the pair of coils (18, 20) is The coils are separated by a predetermined distance, so that the combined inductance of the coils can be reduced by at least 5%, compared to the spaced-apart coils, and a permanent magnet system (28, 30, 3, 2 and 3 4), which are arranged adjacent to each other. The magnetic pole part (28, 30) of the opposite polarity to the individual coils (18, 20). 2. For example, the moving coil of item 1 of the patent application scope. Eight drivers, where the coils of each pair are arranged sufficiently closely spaced to reduce the combined inductance of the coils by at least 25% compared to spaced apart coils. 3. For example, the moving coil of item 1 of the patent application scope. Eight drivers, in which the coils (18, 20) are connected in series, so that the current through the series connected coils generates an opposite magnetic field in the coil of this coil or each pair of coils. 4. For example, the moving coil of item 2 of the patent application scope. Eight drivers, in which the coils (18, 20) are connected in series, so that the current through the series connected coils generates an opposite magnetic field in the coil of this coil or each pair of coils. -5. For the moving coil driver of any one of claims 1 to 4, a single layer of wire (1 1) is wound around each coil (18, 20) ^ 6. If applying The movable coil driver of any one of the scope of patents Nos. 1 to 4, in which a pair of coils (40, 4 2, 80, 8 2) oppositely arranged (T〇7 ^ 4 0 b > 42a > 42b, 80a, 80b, 82a, 82b) are provided on this line Q:\64\64095.ptc 第14頁 478287 Sr*-e 六 修正 案號 89108617 年//月 修正 、申讀®感圍 54 圈架上，而每個與磁鐵系統的個別磁極部份（5 2 5 6、5 8 )有關的線圈包含複數個永久磁鐵。 7. 如申請專利範圍第1至4項中任一項之移動線圈喇叭 驅動器，其中每一對（1 8、2 0、4 0、4 2、8 0、8 2 )的線圈 (18 、20、 40a、 40b、 42a、 42b、 80a、 82b)的間隔實質 等於或小於其直徑。 8. 如申請專利範圍第7項之移動線圈喇。八驅動器，其中 線圈的間隔小於5 in in。 9. 如申請專利範圍第1至4項中任一項之移動線圈喇。八 驅動器，其中線圈的間隔小於每個線圈軸長度的兩倍。 10. 如申請專利範圍第1至4項中任一項之移動線圈喇口八 驅動器，其中磁極部份為圓形的並***在至少一個直徑不 磁極部份直徑的永久性磁鐵中。 11. 一種嘲σ八，其包含： 一可以支撐彎曲擺動的平板，以及 一如前述申請專利範圍中任一項之移動線圈喇0八驅動 器，用來激勵平板中的彎曲板動來產生聲音輸出。Q: \ 64 \ 64095.ptc Page 14 478287 Sr * -e Sixth Amendment No. 89108617 // Month Amendment, Reading® Sense Circumference on the 54 ring frame, and each magnetic pole part with the magnet system (5 2 5 6, 5 8) The relevant coil contains a plurality of permanent magnets. 7. The mobile coil horn driver according to any one of claims 1 to 4, in which each pair of coils (18, 20, 40, 4 2, 8, 0, 8 2) (18, 20 , 40a, 40b, 42a, 42b, 80a, 82b) are substantially equal to or smaller than their diameter. 8. For example, apply for the moving coil of item 7 of the patent scope. Eight drivers, where the coils are spaced less than 5 in in. 9. Apply for a moving coil in any one of the scope of patents 1 to 4. Eight drives in which the coils are spaced less than twice the length of each coil axis. 10. The moving coil lakou eight driver according to any one of claims 1 to 4, wherein the magnetic pole portion is circular and inserted into at least one permanent magnet having a diameter that is not the diameter of the magnetic pole portion. 11. A mock sigma, comprising: a flat plate that can support curved swings, and a moving coil drive as in any of the aforementioned patent application scopes, which is used to stimulate the curved plate in the flat plate to generate sound output . :\64\64095.ptc 第15頁: \ 64 \ 64095.ptc Page 15