TWM657357U

TWM657357U - Loudspeaker

Info

Publication number: TWM657357U
Application number: TW112212061U
Authority: TW
Inventors: 葛帥; 羅明亞
Original assignee: 大陸商美特科技（蘇州）有限公司
Priority date: 2023-02-13
Filing date: 2023-11-07
Publication date: 2024-07-01

Abstract

The embodiment of the invention discloses a loudspeaker,wherein a first magnetic member and a second magnetic member are arranged on both sides of a central magnetic conductive member respectively, and the first magnetic member is arranged on the inner position of the central magnetic conductive member through a first containment slot. Thus, in the processing of the central magnetic member, by controlling the position of the first containing slot on the central magnetic member, the relative position of the first magnetic member, the central magnetic member, and the second magnetic component in the horizontal direction can be better controlled, further ensuring that the width of the magnetic gap in all directions can be consistent, so that the movement of the voice coil is more stable and the sound quality of the electronic device is improved.

Description

揚聲器Speaker

本創作涉及揚聲器技術領域，尤其涉及一種揚聲器。 This work relates to the field of speaker technology, and in particular to a speaker.

揚聲器可以將電訊號轉化為聲音訊號。對於電動式揚聲器而言，音圈在磁場中受到安培力的作用，進行往復運動。因此，磁間隙中磁場的分佈情況，對音圈的運動會產生重要影響。如何優化磁間隙中的磁場分佈，改善音圈的受力，成為需要解決的問題。 Speakers can convert electrical signals into sound signals. For electrodynamic speakers, the voice coil is subjected to the Ampere force in the magnetic field and reciprocates. Therefore, the distribution of the magnetic field in the magnetic gap will have an important impact on the movement of the voice coil. How to optimize the magnetic field distribution in the magnetic gap and improve the force on the voice coil has become a problem that needs to be solved.

有鑑於此，本創作實施例提供了一種揚聲器，利用設置在中心導磁件上的第一容置槽，對第一磁性件的側面和底面進行包覆，從而增加了磁間隙中的磁通密度，同時使得磁場分佈更加均勻。 In view of this, the present invention provides a speaker that uses a first receiving groove disposed on a central magnetic conductive member to cover the side and bottom surfaces of the first magnetic member, thereby increasing the magnetic flux density in the magnetic gap and making the magnetic field distribution more uniform.

根據本創作實施例的第一方面，提供了一種揚聲器包括：音圈；殼體部；振膜，殼體部與振膜的外緣固定連接，音圈的端面與振膜外緣的內側固定連接；以及外側磁性部和中心磁性部，外側磁性部和中心磁性部之間形成磁間隙，音圈至少部分位於磁間隙中；中心磁性部包括堆疊設置的中心導磁件、第一磁性件和第二磁性件，中心導磁件間隔設置於第一磁性件和第二磁性件之間，中心導磁件包括環繞體和中心體，環繞體沿中心體的周向延伸並與中心體形成第一容置槽，第一磁性件安裝於第一容置槽內且第一磁性件的側面與第一容置槽的至少部分內側壁對應。 According to the first aspect of the present invention, a speaker is provided, comprising: a voice coil; a housing; a diaphragm, the housing is fixedly connected to the outer edge of the diaphragm, the end face of the voice coil is fixedly connected to the inner side of the outer edge of the diaphragm; and an outer magnetic part and a central magnetic part, a magnetic gap is formed between the outer magnetic part and the central magnetic part, and the voice coil is at least partially located in the magnetic gap; the central magnetic part comprises a stacked central magnetic member, a first magnetic member and a second magnetic member, the central magnetic member is spaced between the first magnetic member and the second magnetic member, the central magnetic member comprises a surround and a central body, the surround extends along the circumference of the central body and forms a first accommodating groove with the central body, the first magnetic member is installed in the first accommodating groove and the side surface of the first magnetic member corresponds to at least part of the inner wall of the first accommodating groove.

進一步地，揚聲器還包括：第一容置槽位於中心導磁件的正中且朝向振膜，第一磁性件為板狀結構，環繞體包覆於板狀結構的板緣。 Furthermore, the speaker also includes: the first accommodating groove is located in the middle of the central magnetic conductive component and faces the diaphragm, the first magnetic component is a plate-shaped structure, and the surround is wrapped around the edge of the plate-shaped structure.

進一步地，板狀結構的板面為圓角矩形；第一容置槽的形狀與圓角矩形適配且第一容置槽的深度與板狀結構的厚度相同。 Furthermore, the plate surface of the plate-like structure is a rounded rectangle; the shape of the first receiving groove is adapted to the rounded rectangle and the depth of the first receiving groove is the same as the thickness of the plate-like structure.

進一步地，外側磁性部的數量為4個並分別與圓角矩形的各直邊對應。 Furthermore, the number of the outer magnetic parts is 4 and they correspond to the straight sides of the rounded rectangle respectively.

進一步地，中心體為中心板，中心板的朝向第二磁性件的一側與環繞體的朝向第二磁性件的一側平齊；環繞體具有相互背離的內壁和外壁，外壁與第二磁性件的側面對齊。 Furthermore, the central body is a central plate, and one side of the central plate facing the second magnetic component is aligned with one side of the surrounding body facing the second magnetic component; the surrounding body has an inner wall and an outer wall facing away from each other, and the outer wall is aligned with the side of the second magnetic component.

進一步地，環繞體延伸方向的截面為鄰邊不等長的矩形，矩形的長邊與中心體連接。 Furthermore, the cross section of the annulus in the extension direction is a rectangle with unequal lengths of adjacent sides, and the long side of the rectangle is connected to the central body.

進一步地，外側磁性部包括堆疊設置的第三磁性件和外導磁件；環繞體同時與第三磁性件和外導磁件相對側的區域形成磁間隙。 Furthermore, the outer magnetic part includes a stacked third magnetic part and an outer magnetic conductive part; the annulus simultaneously forms a magnetic gap with the area on the opposite sides of the third magnetic part and the outer magnetic conductive part.

進一步地，揚聲器還包括：導磁底板，4個外側磁性部和第二磁性件貼設於導磁底板的同側；殼體部，包括多個安裝台以及窗口，多個安裝台朝同側凸起，導磁底板安裝於安裝台的頂部，振膜邊緣與窗口邊緣固定連接。 Furthermore, the speaker also includes: a magnetic bottom plate, four outer magnetic parts and a second magnetic part attached to the same side of the magnetic bottom plate; a housing, including multiple mounting platforms and windows, multiple mounting platforms protrude toward the same side, the magnetic bottom plate is mounted on the top of the mounting platform, and the edge of the diaphragm is fixedly connected to the edge of the window.

進一步地，多個安裝台為4個安裝台，各安裝台設有弧形導流面，弧形導流面位於安裝台的側向，並與中心磁性部相對；外側磁性部設有與弧形導流面相鄰的導流斜面，導流斜面位於外側磁性部的側向，各導流斜面朝相鄰的弧形導流面延伸。 Furthermore, the plurality of mounting platforms are four mounting platforms, each mounting platform is provided with an arc-shaped flow-guiding surface, the arc-shaped flow-guiding surface is located on the side of the mounting platform and is opposite to the central magnetic part; the outer magnetic part is provided with a flow-guiding inclined surface adjacent to the arc-shaped flow-guiding surface, the flow-guiding inclined surface is located on the side of the outer magnetic part, and each flow-guiding inclined surface extends toward the adjacent arc-shaped flow-guiding surface.

進一步地，殼體部包括與4個外側磁性部一一對應的4個固定板，各外側磁性部背離中心磁性部的一側固定於各固定板，各安裝台間隔設置於相鄰的兩個固定板之間，並通過相鄰的兩個外側磁性部之間的空隙與中心磁性部對應。 Furthermore, the housing includes four fixing plates corresponding to the four outer magnetic parts one by one, and the side of each outer magnetic part facing away from the central magnetic part is fixed to each fixing plate, and each mounting platform is arranged between two adjacent fixing plates and corresponds to the central magnetic part through the gap between the two adjacent outer magnetic parts.

進一步地，中心體為中心板，環繞體圍繞中心板形成第二容置槽，第二容置槽的朝向與第一容置槽的朝向相反；第二磁性件安裝於第二容置槽內且第二磁性件的側面與第二容置槽的至少部分內側壁對應。 Furthermore, the central body is a central plate, and the surrounding body surrounds the central plate to form a second receiving groove, and the direction of the second receiving groove is opposite to that of the first receiving groove; the second magnetic member is installed in the second receiving groove and the side surface of the second magnetic member corresponds to at least part of the inner side wall of the second receiving groove.

進一步地，第二容置槽的底面與第一容置槽的底面平行；在中心板的厚度方向上，第一容置槽與第二容置槽的側壁重合，且第一容置槽的側壁與第二容置槽的側壁同時與第一容置槽的底面垂直；第二磁性件為板狀件，環繞體包覆於板狀件的板緣。 Furthermore, the bottom surface of the second receiving groove is parallel to the bottom surface of the first receiving groove; in the thickness direction of the center plate, the side walls of the first receiving groove and the second receiving groove overlap, and the side walls of the first receiving groove and the side walls of the second receiving groove are perpendicular to the bottom surface of the first receiving groove at the same time; the second magnetic member is a plate-shaped member, and the surrounding body is wrapped around the edge of the plate-shaped member.

進一步地，環繞體具有安裝端面，安裝端面圍繞第二容置槽；揚聲器還包括：導磁底板，中心磁性部安裝於導磁底板上，安裝端面和第二磁性件同時與導磁底板貼合。 Furthermore, the surround has a mounting end surface, and the mounting end surface surrounds the second accommodation groove; the speaker also includes: a magnetic bottom plate, the central magnetic part is mounted on the magnetic bottom plate, and the mounting end surface and the second magnetic part are simultaneously attached to the magnetic bottom plate.

進一步地，第一容置槽的深度大於與第二容置槽的深度；在音圈的運動行程中，第一磁性件和中心體與音圈保持對應。 Furthermore, the depth of the first accommodating groove is greater than the depth of the second accommodating groove; during the movement of the voice coil, the first magnetic member and the central body remain corresponding to the voice coil.

本創作實施例的揚聲器，將第一磁性件和第二磁性件分別設置在中心導磁件的兩側，同時將第一磁性件通過第一容置槽設置在中心導磁件的內側位置，以增加中心導磁件中的磁場強度，進而提高了中心導磁件與外側磁性部之間的磁通密度。由此，一方面，避免了第一磁性件將磁場直接作用於外側磁性部，導致磁力線分佈不均勻的情況。另一方面，在中心導磁件的加工過程中，通過控制第一容置槽在中心導磁件上的位置，可以更好地控制第一磁性件、中心導磁件和第二磁性件在水準方向上的相對位置，進一步保證了磁間隙在各個方向上的寬度能夠一致，從而使音圈的運動更加穩定，提高了電子設備的音質。尤其揚聲器在低頻狀態工作時，可以極大地減少總諧波失真。 In the loudspeaker of the present invention, the first magnetic member and the second magnetic member are respectively arranged on both sides of the central magnetic member, and the first magnetic member is arranged at the inner side of the central magnetic member through the first receiving groove to increase the magnetic field strength in the central magnetic member, thereby increasing the magnetic flux density between the central magnetic member and the outer magnetic part. Thus, on the one hand, it is avoided that the first magnetic member directly acts on the outer magnetic part with the magnetic field, resulting in uneven distribution of magnetic lines of force. On the other hand, during the processing of the central magnetic member, by controlling the position of the first receiving groove on the central magnetic member, the relative positions of the first magnetic member, the central magnetic member and the second magnetic member in the horizontal direction can be better controlled, further ensuring that the width of the magnetic gap in each direction can be consistent, thereby making the movement of the voice coil more stable and improving the sound quality of the electronic device. Especially when the speaker works in low frequency state, the total harmonic distortion can be greatly reduced.

1:中心磁性部 1: Center magnetic part

11,11′:第一磁性件 11,11′: first magnetic part

12,12′:第二磁性件 12,12′: Second magnetic part

13,13′:中心導磁件 13,13′: Center magnetic conductor

131:環繞體 131: Surrounding Body

1311:內壁 1311: Inner wall

1312:外壁 1312: Outer wall

1313:安裝端面 1313: Mounting end face

132:中心體 132: Centrosome

133:第一容置槽 133: First accommodating groove

134:第二容置槽 134: Second storage tank

2:外側磁性部 2: External magnetic part

21:第三磁性件 21: The third magnetic part

22:外導磁件 22: External magnetic conductive parts

23:導流斜面 23: Diversion slope

3:磁間隙 3: Magnetic gap

4:振膜 4: Diaphragm

5:導磁底板 5: Magnetic base plate

6:殼體部 6: Shell

61:安裝台 61: Installation table

611:安裝凹陷 611: Installation recess

612:弧形導流面 612: Arc-shaped guide surface

62:窗口 62: Window

63:連接部 63:Connection part

64:固定板 64:Fixed plate

7:音圈 7: Voice coil

通過以下參照圖式對本創作實施例的描述，本創作的上述以及其它目的、特徵和優點將更為清楚，在圖式中：圖1是本創作實施例的揚聲器一側的結構示意圖；圖2是本創作實施例的揚聲器另一側的結構示意圖；圖3是本創作實施例的揚聲器的***示意圖；圖4是本創作實施例的揚聲器在一些實施方式中的剖視示意圖；圖5是本創作實施例的磁間隙中磁力線分佈示意圖；圖6是本創作實施例的揚聲器在另一些實施方式中的剖視示意圖；圖7是本創作實施例的揚聲器在又一些實施方式中的剖視示意圖；圖8是本創作實施例的揚聲器中氣流流通示意圖；圖9是本創作實施例的音圈的磁通密度與位移變化模擬測試圖；圖10是本創作實施例的揚聲器的總諧波失真模擬測試圖。 The above and other purposes, features and advantages of the present invention will become clearer through the following description of the embodiments of the present invention with reference to the drawings, in which: FIG. 1 is a structural schematic diagram of one side of the speaker of the present invention; FIG. 2 is a structural schematic diagram of the other side of the speaker of the present invention; FIG. 3 is an exploded schematic diagram of the speaker of the present invention; FIG. 4 is a cross-sectional schematic diagram of the speaker of the present invention in some embodiments; FIG. 5 is a schematic diagram of the present invention; FIG. 6 is a schematic diagram of the distribution of magnetic lines of force in the magnetic gap of the present invention; FIG. 7 is a schematic diagram of the cross-section of the speaker of the present invention in other embodiments; FIG. 8 is a schematic diagram of the air flow in the speaker of the present invention; FIG. 9 is a simulation test diagram of the magnetic flux density and displacement change of the voice coil of the present invention; FIG. 10 is a simulation test diagram of the total harmonic distortion of the speaker of the present invention.

以下基於實施例對本創作進行描述，但是本創作並不僅僅限於這些實施例。在下文對本創作的細節描述中，詳盡描述了一些特定的細節部分。對本領域技術人員來說沒有這些細節部分的描述也可以完全理解本創作。為了避免混淆本創作的實質，公知的方法、過程、流程、元件和電路並沒有詳細敘述。 The invention is described below based on embodiments, but the invention is not limited to these embodiments. In the detailed description of the invention below, some specific details are described in detail. For those skilled in the art, the invention can be fully understood without the description of these details. In order to avoid confusion about the essence of the invention, the known methods, processes, procedures, components and circuits are not described in detail.

此外，本領域普通技術人員應當理解，在此提供的圖式都是為了說明的目的，並且圖式不一定是按比例繪製的。 In addition, persons of ordinary skill in the art should understand that the figures provided herein are for illustrative purposes and are not necessarily drawn to scale.

除非上下文明確要求，否則整個申請文件中的“包括”、“包含”等類似詞語應當解釋為包含的含義而不是排他或窮舉的含義；也就是說，是“包括但不限於”的含義。 Unless the context clearly requires otherwise, the words "include", "including" and similar terms throughout the application documents should be interpreted as inclusive rather than exclusive or exhaustive; that is, "including but not limited to".

在本創作的描述中，需要理解的是，術語“第一”、“第二”等僅用於描述目的，而不能理解為指示或暗示相對重要性。此外，在本創作的描述中，除非另有說明，“多個”的含義是兩個或兩個以上。 In the description of this work, it is to be understood that the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In addition, in the description of this work, unless otherwise specified, "plurality" means two or more.

為易於說明，諸如“內”、“外”、“之下”、“下方”、“下部”、“上方”、“上部”等等的空間相關術語在此被用於描述圖中例示的一個元件或特徵與另一元件或特徵的關係。將理解的是，空間相關術語可意欲包含設備在使用或操作中的除圖中描繪的方位之外的不同的方位。例如，如果圖中的設備被翻轉，則被描述為在其它元件或特徵“下方”或“之下”的元件於是將被定位為在該其它元件或特徵“上方”。因而，示例術語“下方”能包含上方和下方的方位二者。設備可以以其它方式被定向(旋轉90度或處於其它方位)，並且在此使用的空間相關描述詞應該被相應地解釋。 For ease of explanation, spatially relative terms such as "inside," "outside," "under," "below," "lower," "above," "upper," and the like are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as being "under" or "beneath" another element or feature would then be positioned "above" the other element or feature. Thus, the example term "under" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

圖1至圖2是揚聲器在不同方向上的結構示意圖。圖中的揚聲器大致為塊狀結構。在揚聲器的頂部和底部分別為振膜4和導磁底板5，同時，振膜4和導磁底板5通過殼體部6進行固定。在殼體部6上還設置有連接部63，連接部63向殼體部6的一側伸出，通過該連接部63可以便於將揚聲器安裝在電子設備上。該電子設備包括但不限於手機、手錶或筆記型電腦等。 Figures 1 and 2 are schematic diagrams of the structure of the speaker in different directions. The speaker in the figure is roughly a block structure. The top and bottom of the speaker are respectively provided with a diaphragm 4 and a magnetic base plate 5, and at the same time, the diaphragm 4 and the magnetic base plate 5 are fixed through the shell 6. A connecting portion 63 is also provided on the shell 6, and the connecting portion 63 extends to one side of the shell 6. The speaker can be easily installed on an electronic device through the connecting portion 63. The electronic device includes but is not limited to a mobile phone, a watch or a laptop computer, etc.

圖3是揚聲器的***示意圖。位於中間位置的是中心磁性部1，在中心磁性部1的四周分別佈置4個外側磁性部2。 Figure 3 is an exploded diagram of the speaker. The central magnetic part 1 is located in the middle, and four outer magnetic parts 2 are arranged around the central magnetic part 1.

圖4至圖7為揚聲器在不同實施方式中的剖視示意圖。其中，圖5和圖7中所示的箭頭，展示了磁間隙3中部分磁力線的分佈情況。 Figures 4 to 7 are schematic cross-sectional views of the loudspeaker in different implementations. The arrows shown in Figures 5 and 7 show the distribution of some magnetic lines of force in the magnetic gap 3.

如圖1至圖3所示，本實施例的揚聲器包括音圈7、殼體部6、振膜4和至少一個外側磁性部2和中心磁性部1。殼體部6與振膜4的外緣固定連接，音圈7的端面與振膜4外緣的內側固定連接。再參照圖4所示，中心磁性部1與外側磁性部2之間形成磁間隙3，音圈7至少部分位於所述磁間隙3中。中心磁性部1包括堆疊設置的中心導磁件13、第一磁性件11和第二磁性件12，中心導磁件13位於第一磁性件11和第二磁性件12之間，中心導磁件13包括環繞體131和中心體132，環繞體131沿中心體132的周向延伸並與中心體132形成第一容置槽133，第一磁性件11安裝於第一容置槽133內且第一磁性件11的側面與第一容置槽133的至少部分內側壁對應，也即第一磁性件11完全沉入第一容置槽133內。 As shown in FIGS. 1 to 3 , the speaker of this embodiment includes a voice coil 7, a housing portion 6, a diaphragm 4, and at least one outer magnetic portion 2 and a central magnetic portion 1. The housing portion 6 is fixedly connected to the outer edge of the diaphragm 4, and the end face of the voice coil 7 is fixedly connected to the inner side of the outer edge of the diaphragm 4. Referring to FIG. 4 , a magnetic gap 3 is formed between the central magnetic portion 1 and the outer magnetic portion 2, and the voice coil 7 is at least partially located in the magnetic gap 3. The central magnetic part 1 includes a stacked central magnetic member 13, a first magnetic member 11, and a second magnetic member 12. The central magnetic member 13 is located between the first magnetic member 11 and the second magnetic member 12. The central magnetic member 13 includes an annular body 131 and a central body 132. The annular body 131 extends along the circumference of the central body 132 and forms a first receiving groove 133 with the central body 132. The first magnetic member 11 is installed in the first receiving groove 133 and the side surface of the first magnetic member 11 corresponds to at least part of the inner side wall of the first receiving groove 133, that is, the first magnetic member 11 is completely immersed in the first receiving groove 133.

具體地，本實施例的磁間隙3能夠通過中心導磁件13和外側磁性部2以及第二磁性件12和外側磁性部2之間形成。如圖5所示，其中由中心導磁件13和外側磁性部2之間形成的磁通密度更加緊密，也即將第一磁性件11和第二磁性件12產生的磁場，利用中心磁性部1約束在磁間隙3的靠近頂部區域，從而在音圈7的上下運動過程中，使得儘量多的磁力線穿過音圈7，使得音圈7在該過程中受到的安培力保持穩定。與此相對的，圖4與圖6中的中心磁性部1沒有設置第一容置槽133，相比於圖5中所示狀態，該狀態下第一磁性件11的磁力將直接作用在外側磁性部2上，因此磁間隙3中的磁力線部分會變得不均勻。 Specifically, the magnetic gap 3 of the present embodiment can be formed between the central magnetic member 13 and the outer magnetic part 2 and between the second magnetic member 12 and the outer magnetic part 2. As shown in FIG5 , the magnetic flux density formed between the central magnetic member 13 and the outer magnetic part 2 is more compact, that is, the magnetic field generated by the first magnetic member 11 and the second magnetic member 12 is confined to the area near the top of the magnetic gap 3 by the central magnetic part 1, so that in the process of the up and down movement of the voice coil 7, as many magnetic lines of force as possible pass through the voice coil 7, so that the Ampere force received by the voice coil 7 in this process remains stable. In contrast, the central magnetic part 1 in FIG. 4 and FIG. 6 is not provided with the first receiving groove 133. Compared with the state shown in FIG. 5, the magnetic force of the first magnetic member 11 in this state will directly act on the outer magnetic part 2, so the magnetic force lines in the magnetic gap 3 will become uneven.

在中心導磁件13上的第一容置槽133加工過程中，可以先將中心導磁件13裝夾到利數控銑床上，利用銑刀在中心導磁件13上銑出第一容置槽133。從而保證了第一容置槽133的深度以及第一容置槽133在中心導磁件13 上的位置精度。當第一磁性件11安裝在第一容置槽133內時，可以通過第一容置槽133對第一磁性件11的定位，進而保證第一磁性件11與中心導磁件13的相對位置精度。換言之，相比於圖6中第一磁性件11′、第二磁性件12′和中心導磁件13′依次層疊的結構，利用第一容置槽133可以降低中心磁性部1的組裝精度。 During the processing of the first receiving groove 133 on the central magnetic member 13, the central magnetic member 13 can be first clamped on the CNC milling machine, and the first receiving groove 133 can be milled on the central magnetic member 13 using a milling cutter. Thus, the depth of the first receiving groove 133 and the position accuracy of the first receiving groove 133 on the central magnetic member 13 are guaranteed. When the first magnetic member 11 is installed in the first receiving groove 133, the first magnetic member 11 can be positioned by the first receiving groove 133, thereby ensuring the relative position accuracy of the first magnetic member 11 and the central magnetic member 13. In other words, compared with the structure in which the first magnetic member 11', the second magnetic member 12' and the central magnetic member 13' are stacked in sequence in Figure 6, the first receiving groove 133 can be used to reduce the assembly accuracy of the central magnetic part 1.

具體地，第一容置槽133可以朝向揚聲器的頂部(如圖3所示)，也可以配置為朝向揚聲器的底部。具體的佈置方向，本領域技術人員可以根據實際的使用需求進行選擇。圖9為第一容置槽133朝向頂部狀態下的磁通密度與位移變化模擬測試圖。其中的曲線I和曲線Ⅱ分別與圖5和圖6揚聲器的結構對應。橫坐標的負數區間為音圈7向揚聲器底部運動，正數區間為音圈7向揚聲器的頂部運動。圖中可以看出，利用中心導磁件13的第一容置槽133結構，可以在音圈7向頂部運動過程中降低磁通密度的衰減速度，從而保證揚聲器的音質。與此相對的，圖10為揚聲器的總諧波失真模擬測試圖。其中的曲線I和曲線Ⅱ也分別與圖5和圖6揚聲器的結構對應，圖中虛線所在的頻率為400Hz。圖中可見，在揚聲器處於低頻工作時，曲線I的總諧波失真率要遠低於曲線Ⅱ的總諧波失真率。 Specifically, the first receiving groove 133 can be oriented toward the top of the speaker (as shown in FIG. 3 ), or can be configured to be oriented toward the bottom of the speaker. The specific layout direction can be selected by technical personnel in this field according to actual usage requirements. FIG. 9 is a simulation test diagram of the magnetic flux density and displacement change when the first receiving groove 133 is oriented toward the top. Curves I and II correspond to the structures of the speakers in FIG. 5 and FIG. 6 , respectively. The negative interval of the horizontal coordinate is the movement of the voice coil 7 toward the bottom of the speaker, and the positive interval is the movement of the voice coil 7 toward the top of the speaker. It can be seen from the figure that by utilizing the structure of the first receiving groove 133 of the central magnetic conductive member 13, the attenuation rate of the magnetic flux density can be reduced during the movement of the voice coil 7 toward the top, thereby ensuring the sound quality of the speaker. In contrast, Figure 10 is a simulation test diagram of the total harmonic distortion of the speaker. Curves I and II correspond to the structures of the speakers in Figures 5 and 6 respectively, and the frequency of the dotted line in the figure is 400Hz. It can be seen from the figure that when the speaker is working at a low frequency, the total harmonic distortion rate of curve I is much lower than that of curve II.

可選地，位於第一容置槽133內的第一磁性件11的頂部可配置為與第一容置槽133的頂部高度相同或略底。從而避免第一磁性件11將磁場直接作用在外側磁性部2上。 Optionally, the top of the first magnetic member 11 in the first receiving groove 133 can be configured to be the same height as or slightly lower than the top of the first receiving groove 133. This prevents the first magnetic member 11 from directly applying the magnetic field to the outer magnetic part 2.

綜上，本實施例的揚聲器，將第一磁性件11和第二磁性件12分別設置在中心導磁件13的兩側，同時將第一磁性件11通過第一容置槽133設置在中心導磁件13的內側位置，以增加中心導磁件13中的磁場強度，進而提高了中心導磁件13與外側磁性部2之間的磁通密度。由此，一方面，避免了第一磁性件11將磁場直接作用於外側磁性部2，導致磁力線分佈不均勻的情況。另一方面，在中心導磁件13的加工過程中，通過控制第一容置槽133在中心導磁件13上的位置，可以更好地控制第一磁性件11、中心導磁件13和第二磁性件12在水準方向上的相對位置，進一步保證了磁間隙3在各個方向上的寬度能夠一致，從而使音圈的運動更加穩定，提高了電子設備的音質。尤其揚聲器在低頻狀態工作時，可以極大地減少總諧波失真。 In summary, the speaker of this embodiment arranges the first magnetic member 11 and the second magnetic member 12 on both sides of the central magnetic member 13, and arranges the first magnetic member 11 at the inner side of the central magnetic member 13 through the first receiving groove 133, so as to increase the magnetic field strength in the central magnetic member 13, thereby increasing the magnetic flux density between the central magnetic member 13 and the outer magnetic part 2. Thus, on the one hand, it avoids the situation that the first magnetic member 11 directly acts on the outer magnetic part 2 with the magnetic field, resulting in uneven distribution of magnetic lines of force. On the other hand, during the processing of the central magnetic permeable member 13, by controlling the position of the first accommodating groove 133 on the central magnetic permeable member 13, the relative positions of the first magnetic member 11, the central magnetic permeable member 13 and the second magnetic member 12 in the horizontal direction can be better controlled, further ensuring that the width of the magnetic gap 3 in all directions can be consistent, thereby making the movement of the voice coil more stable and improving the sound quality of the electronic device. In particular, when the speaker works in a low-frequency state, the total harmonic distortion can be greatly reduced.

在一些實施方式中，如圖2至圖3所示，揚聲器還包括振膜4。第一容置槽133位於中心導磁件13的正中且朝向振膜4，第一磁性件11為板狀結構，板狀結構的板緣與環繞體131抵靠。 In some embodiments, as shown in FIG. 2 and FIG. 3 , the speaker further includes a diaphragm 4. The first accommodating groove 133 is located in the middle of the central magnetic conductive member 13 and faces the diaphragm 4. The first magnetic member 11 is a plate-like structure, and the plate edge of the plate-like structure abuts against the surround 131.

具體地，板狀結構的底面與第一容置槽133底部貼合。將板狀結構充滿整個第一容置槽133，使得第一磁性件11與中心導磁件13穩定地連接，同時降量多的增加第一磁性件11的體積，以提高第一磁性件11產生的磁場。 Specifically, the bottom surface of the plate-like structure fits the bottom of the first accommodating groove 133. The plate-like structure fills the entire first accommodating groove 133, so that the first magnetic member 11 is stably connected to the central magnetic conductive member 13, and at the same time, the volume of the first magnetic member 11 is greatly increased to enhance the magnetic field generated by the first magnetic member 11.

在一些實施方式中，如圖4至圖5所示，板狀結構的板面為圓角矩形。與此相對的，第一容置槽133的形狀與圓角矩形適配且第一容置槽133的深度與板狀結構的厚度相同。本實施例中第一容置槽133水準截面的形狀也設置為圓角矩形，利用與該圓角半徑相同的銑刀，可以便於銑刀對圓角進行切削加工。 In some embodiments, as shown in FIGS. 4 and 5 , the plate surface of the plate-like structure is a rounded rectangle. In contrast, the shape of the first receiving groove 133 is adapted to the rounded rectangle and the depth of the first receiving groove 133 is the same as the thickness of the plate-like structure. In this embodiment, the shape of the horizontal cross-section of the first receiving groove 133 is also set to a rounded rectangle, and a milling cutter with the same radius as the rounded corner can be used to facilitate the milling cutter to cut the rounded corner.

進一步地，外側磁性部2的數量為4個並分別與圓角矩形的各直邊對應。本實施例通過對稱設置在中心磁性部1四周的4個外側磁性部2，保證音圈7受到的安培力可以位於揚聲器的高度方向上。 Furthermore, the number of the outer magnetic parts 2 is 4 and they correspond to the straight sides of the rounded rectangle. In this embodiment, the 4 outer magnetic parts 2 are symmetrically arranged around the central magnetic part 1 to ensure that the Ampere force on the voice coil 7 can be located in the height direction of the speaker.

在一些實施方式中，如圖4所示，中心體132為中心板，中心板的朝向第二磁性件12的一側與環繞體131的朝向第二磁性件12的一側平齊。也即，環繞體131的底部與中心體132的底部持平，從而通過該平面使中心導磁件13可以安裝在第二磁性件12的頂面上。同時，環繞體131具有相互背離的內壁1311和外壁1312，外壁1312與第二磁性件12的側面對齊。由此，通過中心導磁件13和第二磁性件12共同形成了磁間隙3的一個側壁，以使音圈7可以沿著磁間隙3上下運動，避免音圈7與中心磁性部1發生磕碰。 In some embodiments, as shown in FIG. 4 , the center body 132 is a center plate, and one side of the center plate facing the second magnetic member 12 is flush with one side of the surround 131 facing the second magnetic member 12. That is, the bottom of the surround 131 is flush with the bottom of the center body 132, so that the center magnetic member 13 can be mounted on the top surface of the second magnetic member 12 through the plane. At the same time, the surround 131 has an inner wall 1311 and an outer wall 1312 facing away from each other, and the outer wall 1312 is aligned with the side surface of the second magnetic member 12. Thus, a side wall of the magnetic gap 3 is formed by the center magnetic member 13 and the second magnetic member 12, so that the voice coil 7 can move up and down along the magnetic gap 3 to avoid collision between the voice coil 7 and the center magnetic part 1.

在一些實施方式中，如圖4所示，環繞體131延伸方向的截面為鄰邊不等長的矩形，矩形的長邊與中心體132連接，也即矩形的短邊向磁間隙3延伸。圖4中的放大圖展示了環繞體131的一種具體形式，圖中的環繞體131和中心體132輪廓為粗實線所示，圖中的環繞體131沿磁間隙3的高度方向延伸，以使得音圈7在往復運動中，可以一直處於磁場內。 In some embodiments, as shown in FIG. 4 , the cross section of the surround 131 in the extension direction is a rectangle with unequal lengths of adjacent sides, and the long side of the rectangle is connected to the center body 132, that is, the short side of the rectangle extends toward the magnetic gap 3. The enlarged view in FIG. 4 shows a specific form of the surround 131, and the contours of the surround 131 and the center body 132 in the figure are shown by thick solid lines. The surround 131 in the figure extends along the height direction of the magnetic gap 3, so that the voice coil 7 can always be in the magnetic field during the reciprocating motion.

在一些實施方式中，如圖4至5所示，外側磁性部2包括堆疊設置的第三磁性件21和外導磁件22。環繞體131同時與第三磁性件21和外導磁件22相對側的區域形成磁間隙3。圖5展示了磁間隙3中磁力線的一種示意，圖中的磁力線分為3個部分。位於磁間隙3頂部的磁力線，由中心導磁件13作用於外導磁件22，位於磁間隙3中部的磁力線，由中心導磁件13作用於第三磁性件21，上述兩個部分的磁力線相對均勻分佈，位於磁間隙3底部的磁力線相對較少。由此，在音圈7上下運動過程中，大部分的磁場都可以穩定地穿過音圈7。因此，減少了揚聲器失真情況的出現。 In some embodiments, as shown in FIGS. 4 to 5 , the outer magnetic portion 2 includes a stacked third magnetic member 21 and an outer magnetic member 22. The annulus 131 forms a magnetic gap 3 with the area on the opposite sides of the third magnetic member 21 and the outer magnetic member 22. FIG. 5 shows a schematic diagram of the magnetic lines of force in the magnetic gap 3, and the magnetic lines of force in the figure are divided into three parts. The magnetic lines of force located at the top of the magnetic gap 3 are acted on the outer magnetic member 22 by the central magnetic member 13, and the magnetic lines of force located in the middle of the magnetic gap 3 are acted on the third magnetic member 21 by the central magnetic member 13. The magnetic lines of force of the above two parts are relatively evenly distributed, and the magnetic lines of force located at the bottom of the magnetic gap 3 are relatively small. Therefore, during the up and down movement of the voice coil 7, most of the magnetic field can stably pass through the voice coil 7. Therefore, the occurrence of speaker distortion is reduced.

在一些實施方式中，如圖4所示，揚聲器還包括導磁底板5和殼體部6。4個外側磁性部2和第二磁性件12貼設於導磁底板5的同側。本實施例的導磁底板5可以為中心磁性部1和外側磁性部2提供安裝位置，同時還能與中心磁性部1和外側磁性部2一同形成磁路系統。 In some embodiments, as shown in FIG. 4 , the speaker further includes a magnetic bottom plate 5 and a housing 6. The four outer magnetic parts 2 and the second magnetic member 12 are attached to the same side of the magnetic bottom plate 5. The magnetic bottom plate 5 of this embodiment can provide a mounting position for the central magnetic part 1 and the outer magnetic part 2, and can also form a magnetic circuit system together with the central magnetic part 1 and the outer magnetic part 2.

在一些實施方式中，如圖1至圖3所示，揚聲器還包括振膜4和殼體部6。殼體部6包括多個安裝台61以及窗口62，多個安裝台61朝同側凸起，導磁底板5安裝於安裝台61的頂部，振膜4邊緣與窗口62邊緣固定連接。 In some embodiments, as shown in Figures 1 to 3, the speaker further includes a diaphragm 4 and a housing 6. The housing 6 includes a plurality of mounting platforms 61 and a window 62. The plurality of mounting platforms 61 protrude toward the same side, the magnetic base plate 5 is mounted on the top of the mounting platforms 61, and the edge of the diaphragm 4 is fixedly connected to the edge of the window 62.

具體地，安裝台61的數量為4個並分別位於導磁底板5的四個頂角位置。再參照圖1所示，在安裝台61頂部的靠近揚聲器中間區域還設置有安裝凹陷611，該安裝凹陷611由安裝台61的頂部向安裝台61的底部凹陷形成。本實施例通過安裝台61可以將導磁底板5與振膜4在揚聲器的高度方向上間隔開，並利用安裝凹陷611將導磁底板5卡設在4個安裝台61之間，從而為佈置中心磁性部1和外側磁性部2提供足夠的空間。 Specifically, there are four mounting platforms 61, which are respectively located at the four top corners of the magnetic bottom plate 5. Referring to FIG. 1, a mounting recess 611 is provided at the top of the mounting platform 61 near the middle area of the speaker, and the mounting recess 611 is formed by the top of the mounting platform 61 being recessed toward the bottom of the mounting platform 61. In this embodiment, the magnetic bottom plate 5 and the diaphragm 4 can be separated in the height direction of the speaker by the mounting platform 61, and the magnetic bottom plate 5 is clamped between the four mounting platforms 61 by the mounting recess 611, thereby providing sufficient space for arranging the central magnetic part 1 and the outer magnetic part 2.

圖8是揚聲器中的氣流流通示意圖。在一些實施方式中，如圖8所示，多個安裝台61為4個安裝台61，各安裝台61設有弧形導流面612，弧形導流面612位於安裝台61的側向，並與中心磁性部1相對。外側磁性部2設有與弧形導流面612相鄰的導流斜面23，導流斜面23位於外側磁性部2的側向，各導流斜面23朝相鄰的弧形導流面612延伸。 FIG8 is a schematic diagram of airflow in the speaker. In some embodiments, as shown in FIG8 , the plurality of mounting platforms 61 are four mounting platforms 61, each mounting platform 61 is provided with an arc-shaped guide surface 612, the arc-shaped guide surface 612 is located on the side of the mounting platform 61 and is opposite to the central magnetic part 1. The outer magnetic part 2 is provided with a guide slope 23 adjacent to the arc-shaped guide surface 612, the guide slope 23 is located on the side of the outer magnetic part 2, and each guide slope 23 extends toward the adjacent arc-shaped guide surface 612.

具體地，如圖8中還展示了虛線Ⅲ和4個箭頭。如圖虛線Ⅲ所示，導流斜面23的邊緣與弧形導流面612對應。圖中還用粗實線展示了弧形導流面612和導流斜面23的輪廓。其中，導流斜面23同時設置於第三磁性件21和外導磁件22上。 Specifically, as shown in FIG8 , a dotted line III and four arrows are also shown. As shown in the dotted line III, the edge of the guide slope 23 corresponds to the arc-shaped guide surface 612. The contours of the arc-shaped guide surface 612 and the guide slope 23 are also shown in the figure with thick solid lines. Among them, the guide slope 23 is simultaneously provided on the third magnetic member 21 and the outer magnetic member 22.

揚聲器在振動中，音圈7受到安培力的作用，會帶動振膜4上下運動。由此，使得揚聲器內部的容積發生變化。為了避免該過程中，對振膜4運動產生影響，本實施例利用導流斜面23和弧形導流面612對揚聲器內部的氣流進行引導。 When the speaker is vibrating, the voice coil 7 is acted upon by the Ampere force, which drives the diaphragm 4 to move up and down. As a result, the volume inside the speaker changes. In order to avoid affecting the movement of the diaphragm 4 during this process, this embodiment uses the guide slope 23 and the arc-shaped guide surface 612 to guide the airflow inside the speaker.

以音圈7嚮導磁底板5運動為例，音圈7在運動中帶動振膜4，使得揚聲器內的容積減少，如圖中的箭頭所示方向，該過程中氣流會沿著導流斜面23到達弧形導流面612，再經由弧形導流面612排至揚聲器外部。從而，避免了因空氣無法及時排出，對振膜4的運動產生影響。另一方面，隨著空氣的流出，還能將揚聲器產生的熱量一同排出。 Taking the movement of the voice coil 7 guiding the magnetic base plate 5 as an example, the voice coil 7 drives the diaphragm 4 during the movement, so that the volume inside the speaker decreases, as shown by the arrow in the figure. In this process, the airflow will reach the arc-shaped guide surface 612 along the guide slope 23, and then be discharged to the outside of the speaker through the arc-shaped guide surface 612. Thus, it is avoided that the movement of the diaphragm 4 is affected by the inability to discharge the air in time. On the other hand, as the air flows out, the heat generated by the speaker can also be discharged together.

在一些實施方式中，如圖8所示，殼體部6包括與4個外側磁性部2一一對應的4個固定板64，各外側磁性部2背離中心磁性部1的一側固定於各固定板64，各安裝台61間隔設置於相鄰的兩個固定板64之間，並通過相鄰的兩個外側磁性部2之間的空隙與中心磁性部1對應。本實施例利用了安裝台61與固定板64之間的空隙，將磁間隙3內的氣體與揚聲器外部導通，從而使得揚聲器能夠在振動中，不斷地使空氣在該過程中流入和流出。減少了揚聲器出現失真以及溫度過高的現象。 In some embodiments, as shown in FIG8 , the housing 6 includes four fixing plates 64 corresponding to the four outer magnetic parts 2, and the side of each outer magnetic part 2 facing away from the central magnetic part 1 is fixed to each fixing plate 64, and each mounting platform 61 is arranged between two adjacent fixing plates 64, and corresponds to the central magnetic part 1 through the gap between the two adjacent outer magnetic parts 2. This embodiment utilizes the gap between the mounting platform 61 and the fixing plate 64 to conduct the gas in the magnetic gap 3 with the outside of the speaker, so that the speaker can continuously flow in and out of the air during the vibration process. The distortion and overheating of the speaker are reduced.

在一些實施方式中，如圖7所示，中心體132為中心板，環繞體131圍繞中心板形成第二容置槽134，第二容置槽134的朝向與第一容置槽133的朝向相反。第二磁性件12安裝於第二容置槽134內且第二磁性件12的側面與第二容置槽134的至少部分內側壁對應。 In some embodiments, as shown in FIG. 7 , the central body 132 is a central plate, and the surrounding body 131 surrounds the central plate to form a second receiving groove 134, and the direction of the second receiving groove 134 is opposite to that of the first receiving groove 133. The second magnetic member 12 is installed in the second receiving groove 134, and the side surface of the second magnetic member 12 corresponds to at least part of the inner side wall of the second receiving groove 134.

本實施例可以同時避免第一磁性件11和第二磁性件12將磁場直接作用於外側磁性部2上。從圖7中可以看出，在磁間隙3的高度方向上，除位於頂部和中部的磁力線處於均布狀態，位於磁間隙3底部的磁力線也能較為均勻地分佈。圖5和圖7中還同時用點劃線展示了音圈7大致的截面輪廓。通過兩圖的對比可見，本實施例可以進一步使作用在音圈7上的磁場分佈更加均勻。使得圖5中位於中心磁性部1底部區域，呈現捲曲狀態的磁力線，通過中心體132和環繞體131的依次引導，向磁間隙3的頂部方向移動。從而，使穿過音圈7的磁場更加均勻。以減少揚聲器的失真現象。改善了音圈7嚮導磁底板5方向運動時的安培力。 This embodiment can simultaneously prevent the first magnetic member 11 and the second magnetic member 12 from directly applying the magnetic field to the outer magnetic portion 2. As can be seen from FIG7, in the height direction of the magnetic gap 3, in addition to the uniform distribution of the magnetic lines of force at the top and the middle, the magnetic lines of force at the bottom of the magnetic gap 3 can also be distributed more evenly. FIG5 and FIG7 also simultaneously show the approximate cross-sectional profile of the voice coil 7 with dotted lines. By comparing the two figures, it can be seen that this embodiment can further make the distribution of the magnetic field acting on the voice coil 7 more uniform. The magnetic lines of force in the curled state at the bottom area of the central magnetic portion 1 in FIG5 are guided successively by the central body 132 and the surround 131 and move toward the top of the magnetic gap 3. Thereby, the magnetic field passing through the voice coil 7 is made more uniform. To reduce the distortion of the speaker. Improve the Ampere force when the voice coil 7 moves in the direction of the magnetic base plate 5.

在一些實施方式中，如圖7所示，第二容置槽134的底面與第一容置槽133的底面平行。同時在中心板的厚度方向上，第一容置槽133與第二容置槽134的側壁重合，且第一容置槽133的側壁與第二容置槽134的側壁同時與第一容置槽133的底面垂直。第二磁性件12為板狀件，環繞體131包覆於板狀件的板緣。換言之，本實施例將第一容置槽133水準方向的截面和第二容置槽134水準方向的截面配置為相同且重合。由此，在磁間隙3的高度方向上，經由中心導磁件13後，作用在外側磁性部2上的磁場會更加均勻。 In some embodiments, as shown in FIG. 7 , the bottom surface of the second receiving groove 134 is parallel to the bottom surface of the first receiving groove 133. At the same time, in the thickness direction of the center plate, the side walls of the first receiving groove 133 and the second receiving groove 134 overlap, and the side walls of the first receiving groove 133 and the side walls of the second receiving groove 134 are perpendicular to the bottom surface of the first receiving groove 133 at the same time. The second magnetic member 12 is a plate-shaped member, and the surrounding body 131 is wrapped around the plate edge of the plate-shaped member. In other words, in this embodiment, the cross-section of the first receiving groove 133 in the horizontal direction and the cross-section of the second receiving groove 134 in the horizontal direction are configured to be the same and overlap. As a result, in the height direction of the magnetic gap 3, after passing through the central magnetic conductive member 13, the magnetic field acting on the outer magnetic part 2 will be more uniform.

在一些實施方式中，如圖7所示，環繞體131具有安裝端面1313，安裝端面1313圍繞第二容置槽134。揚聲器還包括導磁底板5，中心磁性部1安裝於導磁底板5上，安裝端面1313和第二磁性件12同時與導磁底板5貼合。本實施例可以通過中心導磁件13和導磁底板5的配合，將第二磁性件12穩定地夾持其中，避免揚聲器在使用中第二磁性件12在其中發生晃動。同時，還能保證第二磁性件12通過導磁底板5與第三磁性件21形成的磁場更加穩定。 In some embodiments, as shown in FIG. 7 , the surround 131 has a mounting end face 1313, and the mounting end face 1313 surrounds the second accommodation groove 134. The speaker further includes a magnetic bottom plate 5, and the central magnetic part 1 is mounted on the magnetic bottom plate 5, and the mounting end face 1313 and the second magnetic member 12 are simultaneously attached to the magnetic bottom plate 5. In this embodiment, the second magnetic member 12 can be stably clamped therein by the cooperation of the central magnetic member 13 and the magnetic bottom plate 5, so as to prevent the second magnetic member 12 from shaking therein during use of the speaker. At the same time, it can also ensure that the magnetic field formed by the second magnetic member 12 through the magnetic bottom plate 5 and the third magnetic member 21 is more stable.

在一些實施方式中，如圖7所示，將第一容置槽133的深度配置為大於與第二容置槽134的深度。圖中展示的L1和L2分別為第一容置槽133和第二容置槽134的深度，也即L1大於L2。與此相對的，第一磁性件11的厚度大於第二磁性件12的厚度，以將磁間隙3中的磁力線盡可能向上移動。在音圈7的運動行程中，使得第一磁性件11和中心體132與音圈7保持對應。進一步減少了揚聲器失真現象出現。 In some embodiments, as shown in FIG. 7 , the depth of the first accommodating groove 133 is configured to be greater than the depth of the second accommodating groove 134. L1 and L2 shown in the figure are the depths of the first accommodating groove 133 and the second accommodating groove 134, respectively, that is, L1 is greater than L2. In contrast, the thickness of the first magnetic member 11 is greater than the thickness of the second magnetic member 12 to move the magnetic field lines in the magnetic gap 3 upward as much as possible. During the movement of the voice coil 7, the first magnetic member 11 and the central body 132 are kept corresponding to the voice coil 7. The distortion of the speaker is further reduced.

以上所述僅為本創作的優選實施例，並不用於限制本創作，對於本領域技術人員而言，本創作可以有各種改動和變化。凡在本創作的精神和原理之內所作的任何修改、等同替換、改進等，均應包含在本創作的保護範圍之內。 The above is only a preferred embodiment of this creation and is not intended to limit this creation. For technical personnel in this field, this creation can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation should be included in the protection scope of this creation.

131:環繞體 131: Surrounding Body

1311:內壁 1311: Inner wall

1312:外壁 1312: Outer wall

132:中心體 132: Centrosome

133:第一容置槽 133: First accommodating groove

21:第三磁性件 21: The third magnetic part

22:外導磁件 22: External magnetic conductive parts

3:磁間隙 3: Magnetic gap

5:導磁底板 5: Magnetic base plate

6:殼體部 6: Shell

Claims

一種揚聲器，其係包括有：音圈(7)；殼體部(6)；振膜(4)，所述殼體部(6)與所述振膜(4)的外緣固定連接，所述音圈(7)的端面與所述振膜(4)外緣的內側固定連接；以及外側磁性部(2)和中心磁性部(1)，所述外側磁性部(2)和所述中心磁性部(1)之間形成磁間隙(3)，所述音圈(7)至少部分位於所述磁間隙(3)中；所述中心磁性部(1)包括堆疊設置的中心導磁件(13)、第一磁性件(11)和第二磁性件(12)，所述中心導磁件(13)間隔設置於所述第一磁性件(11)和所述第二磁性件(12)之間，所述中心導磁件(13)包括環繞體(131)和中心體(132)，所述環繞體(131)沿所述中心體(132)的周向延伸並與所述中心體(132)形成第一容置槽(133)，所述第一磁性件(11)安裝於所述第一容置槽(133)內且所述第一磁性件(11)的側面與所述第一容置槽(133)的至少部分內側壁對應。 A loudspeaker comprises: a voice coil (7); a housing (6); a diaphragm (4), wherein the housing (6) is fixedly connected to the outer edge of the diaphragm (4), and the end face of the voice coil (7) is fixedly connected to the inner side of the outer edge of the diaphragm (4); and an outer magnetic portion (2) and a central magnetic portion (1), wherein a magnetic gap (3) is formed between the outer magnetic portion (2) and the central magnetic portion (1), and the voice coil (7) is at least partially located in the magnetic gap (3); the central magnetic portion (1) comprises a central magnetic conductive member (13), a first magnetic member (11) and a second magnetic member (12) which are stacked and arranged. The central magnetic conductive member (13) is arranged between the first magnetic member (11) and the second magnetic member (12), the central magnetic conductive member (13) comprises a ring body (131) and a central body (132), the ring body (131) extends along the circumference of the central body (132) and forms a first receiving groove (133) with the central body (132), the first magnetic member (11) is installed in the first receiving groove (133) and the side surface of the first magnetic member (11) corresponds to at least part of the inner side wall of the first receiving groove (133).

如請求項1所述的揚聲器，其中，所述第一容置槽(133)位於所述中心導磁件(13)的正中且朝向所述振膜(4)，所述第一磁性件(11)為板狀結構，所述環繞體(131)包覆於所述板狀結構的板緣。 A loudspeaker as described in claim 1, wherein the first receiving groove (133) is located in the middle of the central magnetic conductive member (13) and faces the diaphragm (4), the first magnetic member (11) is a plate-shaped structure, and the surround (131) is wrapped around the edge of the plate-shaped structure.

如請求項2所述的揚聲器，其中，所述板狀結構的板面為圓角矩形；所述第一容置槽(133)的形狀與所述圓角矩形適配且所述第一容置槽(133)的深度與所述板狀結構的厚度相同。 A loudspeaker as described in claim 2, wherein the plate surface of the plate-like structure is a rounded rectangle; the shape of the first accommodating groove (133) is adapted to the rounded rectangle and the depth of the first accommodating groove (133) is the same as the thickness of the plate-like structure.

如請求項3所述的揚聲器，其中，所述外側磁性部(2)的數量為4個並分別與所述圓角矩形的各直邊對應。 A loudspeaker as described in claim 3, wherein the number of the outer magnetic parts (2) is 4 and they correspond to the straight sides of the rounded rectangle respectively.

如請求項2所述的揚聲器，其中，所述中心體(132)為中心板，所述中心板的朝向所述第二磁性件(12)的一側與所述環繞體(131)的朝向所述第二磁性件(12)的一側平齊；所述環繞體(131)具有相互背離的內壁(1311)和外壁(1312)，所述外壁(1312)與所述第二磁性件(12)的側面對齊。 A loudspeaker as described in claim 2, wherein the central body (132) is a central plate, and a side of the central plate facing the second magnetic member (12) is aligned with a side of the surround (131) facing the second magnetic member (12); the surround (131) has an inner wall (1311) and an outer wall (1312) facing away from each other, and the outer wall (1312) is aligned with the side of the second magnetic member (12).

如請求項1至5中任一項所述的揚聲器，其中，所述環繞體(131)延伸方向的截面為鄰邊不等長的矩形，所述矩形的長邊與所述中心體(132)連接。 A loudspeaker as described in any one of claims 1 to 5, wherein the cross section of the surround (131) in the extension direction is a rectangle with adjacent sides of unequal lengths, and the long side of the rectangle is connected to the central body (132).

如請求項1至5中任一項所述的揚聲器，其中，所述外側磁性部(2)包括堆疊設置的第三磁性件(21)和外導磁件(22)；所述環繞體(131)同時與所述第三磁性件(21)和所述外導磁件(22)相對側的區域形成所述磁間隙(3)。 A loudspeaker as described in any one of claims 1 to 5, wherein the outer magnetic part (2) includes a third magnetic member (21) and an outer magnetic member (22) stacked together; the surround (131) forms the magnetic gap (3) with the area on the opposite sides of the third magnetic member (21) and the outer magnetic member (22).

如請求項4所述的揚聲器，還包括：導磁底板(5)，4個所述外側磁性部(2)和所述第二磁性件(12)貼設於所述導磁底板(5)的同側；所述殼體部(6)，包括多個安裝台(61)以及窗口(62)，多個所述安裝台(61)朝同側凸起，所述導磁底板(5)安裝於所述安裝台(61)的頂部，所述振膜(4)邊緣與所述窗口(62)邊緣固定連接。 The loudspeaker as described in claim 4 further comprises: a magnetically conductive bottom plate (5), the four outer magnetic parts (2) and the second magnetic part (12) being attached to the same side of the magnetically conductive bottom plate (5); the housing (6) comprising a plurality of mounting platforms (61) and a window (62), the plurality of mounting platforms (61) protruding toward the same side, the magnetically conductive bottom plate (5) being mounted on the top of the mounting platforms (61), and the edge of the diaphragm (4) being fixedly connected to the edge of the window (62).

如請求項8所述的揚聲器，其中，多個所述安裝台(61)為4個所述安裝台(61)，各所述安裝台(61)設有弧形導流面(612)，所述弧形導流面(612)位於所述安裝台(61)的側向，並與所述中心磁性部(1)相對；所述外側磁性部(2)設有與所述弧形導流面(612)相鄰的導流斜面(23)，所述導流斜面(23)位於所述外側磁性部(2)的側向，各所述導流斜面(23)朝相鄰的所述弧形導流面(612)延伸。 A loudspeaker as described in claim 8, wherein the plurality of mounting platforms (61) are four mounting platforms (61), each mounting platform (61) is provided with an arc-shaped flow-guiding surface (612), the arc-shaped flow-guiding surface (612) is located on the side of the mounting platform (61) and is opposite to the central magnetic part (1); the outer magnetic part (2) is provided with a flow-guiding inclined surface (23) adjacent to the arc-shaped flow-guiding surface (612), the flow-guiding inclined surface (23) is located on the side of the outer magnetic part (2), and each flow-guiding inclined surface (23) extends toward the adjacent arc-shaped flow-guiding surface (612).

如請求項9所述的揚聲器，其中，所述殼體部(6)包括與4個所述外側磁性部(2)一一對應的4個固定板(64)，各所述外側磁性部(2)背離所述中心磁性部(1)的一側固定於各所述固定板(64)，各所述安裝台(61)間隔設置於相鄰的兩個所述固定板(64)之間，並通過相鄰的兩個所述外側磁性部(2)之間的空隙與所述中心磁性部(1)對應。 A loudspeaker as described in claim 9, wherein the housing (6) includes four fixing plates (64) corresponding to the four outer magnetic parts (2) one by one, each of the outer magnetic parts (2) is fixed to each of the fixing plates (64) on a side away from the central magnetic part (1), and each of the mounting platforms (61) is arranged between two adjacent fixing plates (64) and corresponds to the central magnetic part (1) through a gap between two adjacent outer magnetic parts (2).

如請求項2所述的揚聲器，其中，所述中心體(132)為中心板，所述環繞體(131)圍繞所述中心板形成第二容置槽(134)，所述第二容置槽(134)的朝向與所述第一容置槽(133)的朝向相反；所述第二磁性件(12)安裝於所述第二容置槽(134)內且所述第二磁性件(12)的側面與所述第二容置槽(134)的至少部分內側壁對應。 A loudspeaker as described in claim 2, wherein the central body (132) is a central plate, the surround (131) surrounds the central plate to form a second receiving groove (134), the direction of the second receiving groove (134) is opposite to the direction of the first receiving groove (133); the second magnetic member (12) is installed in the second receiving groove (134) and the side surface of the second magnetic member (12) corresponds to at least part of the inner side wall of the second receiving groove (134).

如請求項11所述的揚聲器，其中，所述第二容置槽(134)的底面與所述第一容置槽(133)的底面平行；在所述中心板的厚度方向上，所述第一容置槽(133)與所述第二容置槽(134)的側壁重合，且所述第一容置槽(133)的側壁與所述第二容置槽(134)的側壁同時與所述第一容置槽(133)的底面垂直；所述第二磁性件(12)為板狀件，所述環繞體(131)包覆於所述板狀件的板緣。 The loudspeaker as claimed in claim 11, wherein the bottom surface of the second accommodating groove (134) is parallel to the bottom surface of the first accommodating groove (133); in the thickness direction of the center plate, the side walls of the first accommodating groove (133) and the second accommodating groove (134) overlap, and the side walls of the first accommodating groove (133) and the side walls of the second accommodating groove (134) are both perpendicular to the bottom surface of the first accommodating groove (133); the second magnetic member (12) is a plate-shaped member, and the surround (131) is wrapped around the edge of the plate-shaped member.

如請求項11所述的揚聲器，其中，所述環繞體(131)具有安裝端面(1313)，所述安裝端面(1313)圍繞所述第二容置槽(134)；所述揚聲器還包括：導磁底板(5)，所述中心磁性部(1)安裝於所述導磁底板(5)上，所述安裝端面(1313)和所述第二磁性件(12)同時與所述導磁底板(5)貼合。 The loudspeaker as described in claim 11, wherein the surround (131) has a mounting end surface (1313), and the mounting end surface (1313) surrounds the second receiving groove (134); the loudspeaker further comprises: a magnetic bottom plate (5), the central magnetic part (1) is mounted on the magnetic bottom plate (5), and the mounting end surface (1313) and the second magnetic part (12) are simultaneously bonded to the magnetic bottom plate (5).

如請求項11所述的揚聲器，其中，所述第一容置槽(133)的深度大於與所述第二容置槽(134)的深度；在所述音圈(7)的運動行程中，所述第一磁性件(11)和所述中心體(132)與所述音圈(7)保持對應。 A loudspeaker as described in claim 11, wherein the depth of the first accommodating groove (133) is greater than the depth of the second accommodating groove (134); During the movement of the voice coil (7), the first magnetic member (11) and the central body (132) remain corresponding to the voice coil (7).