WO2016062007A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2016062007A1
WO2016062007A1 PCT/CN2015/075194 CN2015075194W WO2016062007A1 WO 2016062007 A1 WO2016062007 A1 WO 2016062007A1 CN 2015075194 W CN2015075194 W CN 2015075194W WO 2016062007 A1 WO2016062007 A1 WO 2016062007A1
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WO
WIPO (PCT)
Prior art keywords
slits
washer
slit
conductive member
speaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/075194
Other languages
English (en)
French (fr)
Inventor
李志�
焦其金
杨健斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to US14/769,974 priority Critical patent/US9763011B2/en
Publication of WO2016062007A1 publication Critical patent/WO2016062007A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular to a speaker.
  • a speaker is an acoustic component used to convert electrical and acoustic signals and is an energy conversion device.
  • the speaker comprises a casing containing a vibration system and a magnetic circuit system.
  • the vibration system comprises a folding ring, a connecting piece, a dome, a skeleton voice coil and a elastic wave
  • the magnetic circuit system comprises a combination of a washer and a magnet.
  • a magnetic flux is arranged between the washer and the magnet and the magnetic conductive member, and the end of the skeleton voice coil around the coil is located in the magnetic gap, and the skeleton voice coil is in the magnetic gap according to the acoustic signal passing through the acoustic wave in the coil Do up and down.
  • the skeleton voice coil generates an induced electromotive force while moving up and down in the magnetic field.
  • the current of the sound wave signal and the induced electromotive force generate a modulated magnetic field, which generates eddy currents in the washer, the magnet and the magnetic conductive member, and the energy of the magnetic field is lost.
  • the second harmonic of the speaker is distorted, which affects the acoustic performance of the speaker.
  • the main method to solve the above problem is to install a short-circuit ring in the speaker.
  • the short-circuit ring eliminates the above defects, it increases the internal components of the speaker, increases the production cost, and increases the complexity and difficulty of the speaker assembly. The probability of poor assembly is reduced, and the production efficiency of the speaker and the yield of the finished product are reduced.
  • the technical problem to be solved by the present invention is to provide a speaker which can solve the technical problem of generating eddy current and second harmonic distortion in the magnet without adding a short-circuit ring, and has fewer components and low cost.
  • the assembly is simple and easy to operate.
  • the technical solution of the present invention is:
  • a speaker includes a housing in which a vibration system and a magnetic circuit system are housed, the magnetic circuit system including a magnet and a magnetic conductive member coupled together, and at least one of the magnet and the magnetic conductive member There are a plurality of slits, each of which has a depth extending in a horizontal direction, and each of the slits has a length extending in a vertical direction.
  • each of the slits is equally spaced on each of the components.
  • each of the components has a circular or circular ring structure, and each of the extension lines of the slits in the depth direction intersects with the rotation axis of the corresponding component.
  • the slits on the same member are alternately arranged in depth.
  • the slit is provided on the magnetic conductive member, and the slit penetrates the magnetic conductive member in the longitudinal direction.
  • the magnetic conductive member includes a T-iron and a washer, and the T-iron is provided with the slit, and each of the slits is in the depth direction from an outer edge of the T-iron The center extends and extends to the boss of the T-iron; each of the slits penetrates the T-iron in the longitudinal direction.
  • the washer is a ring structure, and the slit is provided on the washer, and each slit is extended from the inner edge to the outer edge of the washer in the depth direction.
  • the magnetic conductive member includes a basin frame and a washer, and the slit frame is provided with the slit, and each of the slits penetrates the ring shape of the basin frame in the depth direction.
  • the side walls, each of the slits, extend in the length direction from the open end of the basin frame toward the closed end.
  • the washer is a circular structure, and the slit is provided on the washer, and each of the slits extends from the outer edge of the washer to the center in the depth direction.
  • the speaker of the present invention includes a vibration system and a magnetic circuit system
  • the magnetic circuit system includes a magnet and a magnetic conductive member that are coupled together, and at least one of the magnet and the magnetic conductive member is provided with a plurality of slits, and the depth of each slit is Both extend in the horizontal direction, and the lengths of the slits all extend in the vertical direction.
  • the slitting arrangement cuts off the eddy current loop, prevents the formation of most eddy currents, effectively reduces the eddy current loss on the magnetically permeable parts, improves the efficiency of the speaker at high frequencies, and reduces the second harmonic distortion. Improves the acoustic performance of the speaker.
  • the internal components of the speaker are reduced, the production cost is reduced, the assembly process of the speaker is simplified, the production efficiency of the speaker is effectively improved, and the finished product is qualified. rate.
  • the slits on the magnetically permeable parts are alternately arranged, the eddy current loss of the magnetic permeable components can be effectively reduced, and the influence of the slit on the original magnetic field distribution can be minimized, and the acoustic performance of the speaker can be maximized.
  • the speaker of the present invention solves the technical problems of many speaker components, high cost, and large assembly difficulty in the prior art.
  • the speaker of the present invention solves technical problems such as eddy current loss and second harmonic distortion, and has
  • the utility model has the advantages of few components, low production cost, simple and easy assembly, high production efficiency, high yield of finished products and excellent acoustic performance.
  • FIG. 1 is a perspective exploded structural view of a first embodiment of a speaker according to the present invention
  • Figure 2 is a combination view of Figure 1 - T iron on;
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • FIG. 4 is a top plan view of the T iron of Figure 1;
  • Figure 5 is a top plan view of the Huashi of Figure 1;
  • FIG. 6 is a perspective exploded structural view of a second embodiment of the speaker of the present invention.
  • Figure 7 is a combination diagram of Figure 6;
  • Figure 8 is a cross-sectional view taken along line B-B of Figure 7;
  • outer casing 20, folding ring, 22, connecting piece, 24, dome, 26, elastic wave, 28, skeleton voice coil, 30a, Huasi, 30b, Huasi, 300a, slit, 300b, Slit, 32a, magnet, 32b, magnet, 34, T iron, 340, slit, 36, basin frame, 360, slit, 362, groove, 40, electrical connector.
  • orientations referred to in this specification refer to the direction of the vibration system of the speaker, and the orientation refers to the direction of the magnetic circuit system of the speaker;
  • the inner edges referred to in this specification refer to the position near the central axis of the speaker, and the outer edges are referred to The position near the edge of the speaker; both the horizontal and vertical directions referred to in this specification refer to the orientation of the vibration system when it is placed horizontally above the speaker magnetic circuit system.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a speaker has a circular structure and includes a casing 10 having an annular structure with open ends, and the inside of the casing 10 houses a vibration system and a magnetic circuit system.
  • the vibrating system includes a folding ring 20 whose outer edge is fixed on the upper end surface of the outer casing 10.
  • the inner edge of the folding ring 20 is fixed with an annular connecting member 22 having a large opening at one end and a large opening at one end.
  • the large end of the connecting member 22 is connected with the folding ring 20, and is connected.
  • a ball top 24 is connected to one end of the opening of the piece 22, and a skeleton voice coil 28 is fixed to the ball top 24.
  • the outer circumference of the skeleton voice coil 28 is fixed with an elastic wave 26, and the outer edge of the elastic wave 26 is fixed on the outer casing 10, and the skeleton voice coil is fixed.
  • a coil is wound around one end of the bobbin 28, and one end of the bobbin voice coil 28 that is not wound around the bobbin is connected to the dome 24, and the elastic wave 26 surrounds the bobbin voice coil 28 where the coil is not wound.
  • the magnetic circuit system includes a magnet 32a and a magnetic conductive member.
  • the magnetic conductive member includes a T-iron 34 and a washer 30a.
  • the T-iron 34 includes a circular base. The center of the base is provided with a cylindrical boss on the base of the T-iron 34.
  • a ring magnet 32a and a washer 30a are fixed in this order, the washer 30a is fixed to the outer casing 10, and a magnetic gap is left between the magnet 32a and the boss of the washer 30a and the T-iron 34, and the skeleton voice coil 28 is located around the end of the coil. Within the magnetic gap.
  • the skeleton voice coil 28 moves up and down in the magnetic gap according to the magnitude and direction of the acoustic electric signal passing through its coil, and the three components of the dome 24, the connecting member 22 and the folding ring 20 simultaneously move up and down with the skeleton voice coil 28. Vibration, institing the air to sound, thus completing the energy conversion between the electroacoustics.
  • the T-iron 34 is provided with a slit 340, and the slit 340 is provided with eight strips, and the depths of the eight slits 340 are all extended in the horizontal direction, and the lengths are all extended in the vertical direction.
  • the equally spaced portions of the slits 340 are on the T-iron 34, and the extension lines of the eight slits 340 in the depth direction intersect with the axis of rotation of the T-iron 34, and are symmetrically disposed with respect to the axis of rotation of the T-iron 34.
  • the eight slits 340 extend in the depth direction from the outer edge of the T-iron 34 toward the center and extend to the boss of the T-iron 34, and the eight slits 340 extend through the entire T-iron 34 in the longitudinal direction.
  • the adjacent two slits 340 have a large depth dimension and the other depth dimension is small, that is, eight slits 340 are alternately arranged on the T-iron 34.
  • the eight slits 340 are alternately arranged to effectively reduce the eddy current loss of the magnetic conductive component while minimizing the influence of the slit on the original magnetic field distribution, and maximally improving the acoustic performance of the speaker.
  • the slit 30a is also provided on the washer 30a, and the slit 300a is also provided with eight slits.
  • the eight slits 300a are equally spaced on the washer 30a, and the extension lines of the eight slits 300a in the depth direction intersect with the axis of rotation of the washer 30a, and are symmetrically disposed with respect to the axis of rotation of the washer 30a.
  • the slit 300a extends from the inner edge to the outer edge of the washer 30a in the depth direction, and runs through the entire washer 30a in the longitudinal direction.
  • the eight slits 300a are also alternately arranged in depth in the Huashi 30a.
  • the slit may be provided only on one of the washer 30a, the magnet 32a and the T-iron 34, or may be provided in all three components, and it is preferred to provide the slit only on the washer 30a and the T-iron 34.
  • the solution is that the effect of providing the slit on only one part to reduce the eddy current loss is not good; and since the slit is provided on the magnet 32a, the cost is increased, so the present invention only provides the slit on the washer 30a and the T-iron 34. If a slit is provided in the magnet 32a, the structure of the slit is identical to the structure of the slit 300a on the washer 30a.
  • an electrical connector 40 for the electrical connector skeleton voice coil 28 and the external circuitry of the speaker is also attached to the housing 10.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment is basically the same as the first embodiment, and the difference is that:
  • the magnetic flux of the magnetic circuit system includes a basin frame 36 and a washer 30b.
  • the basin frame 36 includes a circular bottom and a circular annular wall vertically surrounding the bottom edge.
  • the center of the bottom of the basin frame 36 is provided with a circular boss.
  • the circular bosses are sequentially fixed with a circular magnet 32b and a washer 30b having the same diameter as the boss.
  • the side wall end of the basin frame 36 is fixed to the outer casing 10. .
  • the basin frame 36 is provided with a slit 360, and the slit 360 is provided with eight strips, and the eight slits 360 extend through the side wall of the basin frame 36 in the depth direction and extend to the boss;
  • the upper end extends from the open end of the basin frame 36 to the closed end, but extends only to the junction of the boss and the bottom, and does not extend to the bottom, that is, the slit 360 does not extend through the entire basin frame in length.
  • Eight slits 360 are alternately arranged on the boss.
  • the extension lines of the eight slits 360 in the depth direction intersect with the axis of rotation of the basin frame.
  • the slit 30b is provided on the washer 30b, and the slit 300b is also provided with eight strips.
  • the eight slits 300b are extended from the outer edge of the washer 30b toward the center in the depth direction, and are alternately arranged in depth.
  • the end surface of the side wall of the basin frame 36 is provided with an annular groove 362 coaxial with the basin frame 36.
  • the end surface of the side wall of the groove 362 is higher than the end surface of the outer side wall.
  • the bottom of the outer casing 10 overlaps the end face of the lower height side wall of the recess 362 and abuts the higher height side wall, and the inner surface of the bottom of the outer casing 10 is flush with the higher side wall end face.
  • the portion of the higher height side wall that is higher than the lower height side wall is not provided with the slit 360.
  • the invention cuts the eddy current loop by providing a slit on the magnetic conductive component, prevents the formation of most eddy currents, effectively reduces the eddy current loss on the magnetic conductive component, and improves the efficiency of the speaker at high frequency.
  • the second harmonic distortion is reduced, which improves the acoustic performance of the speaker. Since the provision of the slit on the magnetic conductive component effectively solves the technical problem of generating eddy current on the magnetic conductive component, there is no need to add a short circuit ring in the speaker, the internal components of the speaker are reduced, the production cost is reduced, and the assembly of the speaker is simplified. The process effectively improves the production efficiency of the speaker and the yield of the finished product.
  • each of the magnetic conductive members which is a preferred embodiment of the inventors considering various effects such as reducing the eddy current loss and affecting the original magnetic field of the speaker, and the like. It is not limited to eight, the technician can determine the number of slits according to the volume of the magnetic conductive component and the performance requirement of the speaker, and the specific embodiment in which other numbers of slits are provided is basically the same as the above two embodiments, so Specific embodiments in which other numbers of slits are provided will not be described herein.
  • the invention only exemplifies the technical solution that the magnetic conductive component of the present invention is provided with a slit by taking the speaker described in the above two embodiments as an example, and in the practical application, the technical solution is not limited to the speaker of the above two structures.
  • the magnetic conductive member is provided with a slit, and the slit is used to reduce the eddy current loss on the magnetic conductive member and reduce the second harmonic distortion, the products for improving the acoustic performance of the speaker fall into the present invention.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本发明公开了一种扬声器，涉及电声产品技术领域，包括外壳，所述外壳内收容有振动系统和磁路系统，所述磁路系统包括结合在一起的磁铁及导磁件，所述磁铁和所述导磁件中的至少一个部件上设有若干条开缝，各条所述开缝的深度均沿水平方向延伸，各条所述开缝的长度均沿垂直方向延伸。本发明扬声器解决了现有技术中扬声器部件多、成本高、装配难度大等技术问题，本发明扬声器在解决了涡流损耗及二次谐波失真等技术问题的同时，还具有部件少，生产成本低，装配简单易操作、生产效率高、成品合格率高，声学性能优异等优点。

Description

扬声器 技术领域
本发明涉及电声产品技术领域，特别涉及一种扬声器。
发明背景
扬声器是一种声学部件，用于完成电信号与声音信号之间的转换，是一种能量转换器件。扬声器包括外壳，外壳内收容有振动系统和磁路系统，振动系统包括结合在一起的折环、连接件、球顶、骨架音圈和弹波，磁路系统包括结合在一起的华司、磁铁和导磁件，华司和磁铁与导磁件之间设有磁间隙，骨架音圈绕有线圈的端部位于磁间隙内，骨架音圈根据通过其线圈内的声波电信号在磁间隙内做上下运动。骨架音圈在磁场中做上下运动的同时会产生感应电动势，音波信号的电流与感应电动势会产生一个调制磁场，该调制磁场会在华司、磁铁和导磁件中产生涡流，损耗磁场的能量，同时使得扬声器的二次谐波失真，影响扬声器的声学性能。
目前解决上述问题的主要方法是在扬声器中安装短路环，短路环虽然消除了上述缺陷，但其增加了扬声器的内部部件，增加了生产成本，同时还增加了扬声器装配的复杂性及难度，加大了装配不良产生的机率，降低了扬声器的生产效率及成品合格率。
发明内容
针对以上缺陷，本发明所要解决的技术问题是提供一种扬声器，此扬声器不需要增加短路环就可以解决磁体中产生涡流及二次谐波失真的技术问题，同时还具有部件少，成本低，装配简单易操作的优点。
为解决上述技术问题，本发明的技术方案是：
一种扬声器，包括外壳，所述外壳内收容有振动系统和磁路系统，所述磁路系统包括结合在一起的磁铁及导磁件，所述磁铁和所述导磁件中的至少一个部件上设有若干条开缝，各条所述开缝的深度均沿水平方向延伸，各条所述开缝的长度均沿垂直方向延伸。
其中，各条所述开缝等间距的分布在各所述部件上。
其中，各所述部件均为圆形或圆环结构，各条所述开缝在深度方向上的延长线均与相应的所述部件的回转轴线相交。
其中，同一所述部件上的所述开缝深浅交替设置。
优选地，所述开缝设在所述导磁件上，所述开缝在长度方向上贯穿所述导磁件。
作为一种实施方式，所述导磁件包括T铁和华司，所述T铁上设有所述开缝，各条所述开缝在深度方向上均由所述T铁的外边缘向中心延伸，并延伸至所述T铁的凸台上；各条所述开缝在长度方向上均贯穿所述T铁。
其中，所述华司为圆环结构，所述华司上设有所述开缝，各条所述开缝在深度方向上均由所述华司的内边缘向外边缘延伸。
作为另一种实施方式，所述导磁件包括盆架和华司，所述盆架上设有所述开缝，各条所述开缝在深度方向上均贯穿所述盆架的环状侧壁，各条所述开缝在长度方向上均由所述盆架的开口端向封闭端延伸。
其中，所述华司为圆形结构，所述华司上设有所述开缝，各条所述开缝在深度方向上均由所述华司的外边缘向中心延伸。
采用了上述技术方案后，本发明的有益效果是：
由于本发明扬声器包括振动系统和磁路系统，磁路系统包括结合在一起的磁铁及导磁件，磁铁和导磁件中的至少一个部件上设有若干条开缝，各条开缝的深度均沿水平方向延伸，各条开缝的长度均沿垂直方向延伸。开缝的设置切断了涡流的环路，阻止了绝大部分涡流的形成，有效的降低了导磁部件上的涡流损耗，提升了扬声器在高频的效率，减小了二次谐波失真，提升了扬声器的声学性能。通过在导磁部件上设置开缝替代了现有技术中的短路环，减少了扬声器的内部部件，降低了生产成本，同时简化了扬声器的装配工艺，有效的提高了扬声器的生产效率及成品合格率。
由于导磁部件上的开缝深浅交替设置，在有效的降低导磁部件涡流损耗的同时还能最大限度的减小开缝对原有磁场分布的影响，最大限度的提升了扬声器的声学性能。
综上所述，本发明扬声器解决了现有技术中扬声器部件多、成本高、装配难度大等技术问题，本发明扬声器在解决了涡流损耗及二次谐波失真等技术问题的同时，还具有部件少，生产成本低，装配简单易操作、生产效率高、成品合格率高，声学性能优异等优点。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图简要说明
通过下面结合附图对本发明进行描述，本发明的上述特征和技术优点将会变得更加清楚和容易理解。
图1是本发明扬声器实施例一的立体分解结构示意图；
图2是图1的组合图-T铁在上；
图3是图2的A-A线剖视图；
图4是图1中T铁的俯视结构示意图；
图5是图1中华司的俯视结构示意图；
图6是本发明扬声器实施例二的立体分解结构示意图；
图7是图6的组合图；
图8是图7的B-B线剖视图；
图中：10、外壳，20、折环，22、连接件，24、球顶，26、弹波，28、骨架音圈，30a、华司，30b、华司，300a、开缝，300b、开缝，32a，磁铁，32b、磁铁，34、T铁、340、开缝，36、盆架，360、开缝，362、凹槽，40、电连接件。
具体实施方式
下面结合附图和实施例，进一步阐述本发明。
本说明书中涉及到的方位上均指扬声器的振动系统的方向，方位下均指扬声器的磁路系统的方向；本说明书中涉及到的内边缘均指靠近扬声器中心轴线的位置，外边缘均指靠近扬声器边缘的位置；本说明书中涉及到的水平方向与垂直方向均指在扬声器磁路系统在下，振动系统在上水平放置时的方位。
实施例一：
如图1、图2和图3共同所示，一种扬声器，为圆形结构，包括一两端开口的圆环结构的外壳10，外壳10的内部收容有振动系统和磁路系统。振动系统包括外边缘固定在外壳10上端面上的折环20，折环20的内边缘固定有一端开口大一端开口小的环形连接件22，连接件22开口大的一端连接折环20，连接件22开口小的一端连接有球顶24，球顶24上固定有骨架音圈28，骨架音圈28的外周固定有弹波26，弹波26的外边缘固定在外壳10上，骨架音圈28的一端缠绕有线圈，骨架音圈28未绕有线圈的一端与球顶24连接，弹波26环绕在骨架音圈28未绕有线圈的位置。磁路系统包括磁铁32a和导磁件，导磁件包括T铁34和华司30a，T铁34包括圆形的底座，底座的中心位置设有圆柱形的凸台，T铁34的底座上依次固定有环形的磁铁32a和华司30a，华司30a与外壳10固定，磁铁32a和华司30a与T铁34的凸台之间留有磁间隙，骨架音圈28绕有线圈的一端位于磁间隙内。骨架音圈28根据通过其线圈的声波电信号的大小和方向在磁间隙内做上下运动，球顶24、连接件22和折环20这三个部件同时随着骨架音圈28的上下运动而振动，策动空气发声，从而完成电声之间的能量转换。
如图1和图4共同所示，T铁34上设有开缝340，开缝340共设有八条，设定八条开缝340的深度均沿水平方向延伸，长度均沿垂直方向延伸，八条开缝340等间距的分部在T铁34上，且八条开缝340在深度方向上的延长线均与T铁34的回转轴线相交，并两两相对于T铁34的回转轴线对称设置。八条开缝340在深度方向上均由T铁34的外边缘向中心延伸，并且延伸至T铁34的凸台上，八条开缝340在长度方向上均贯穿整个T铁34。
如图4所示，相邻的两条开缝340为一条深度尺寸大，另一条深度尺寸小，即八条开缝340深浅交替的设置在T铁34上。八条开缝340的深浅交替设置在有效的降低导磁部件涡流损耗的同时还能最大限度的减小开缝对原有磁场分布的影响，最大限度的提升了扬声器的声学性能。
如图1和图5共同所示，华司30a上也设有开缝300a，开缝300a同样设有八条。八条开缝300a等间距的分布在华司30a上，且八条开缝300a在深度方向上的延长线均与华司30a的回转轴线相交，并两两相对于华司30a的回转轴线对称设置。开缝300a在深度方向上均由华司30a的内边缘向外边缘延伸，在长度方向上均贯穿整个华司30a。八条开缝300a在华司30a上也是深浅交替设置。
开缝可以只在华司30a、磁铁32a和T铁34中的一个部件上设置，也可以在三个部件都设置，只在华司30a和T铁34上设有开缝是本发明的优选方案，因为仅在一个部件上设置开缝降低涡流损耗的效果不好；又因在磁铁32a上设置开缝会增加成本，故本发明仅在华司30a和T铁34上设置开缝。若在磁铁32a上设置开缝，其开缝的结构与华司30a上的开缝300a的结构一致。
如图1、图2和图3共同所示，外壳10上还固定有用于电连接件骨架音圈28与扬声器外部电路的电连接件40。
实施例二：
本实施方式与实施例一基本相同，其不同之处在于：
如图6、图7和图8共同所示，磁路系统的导磁件包括盆架36和华司30b，盆架36包括圆形的底部及垂直环绕在底部边缘的圆环形侧壁，盆架36底部的中心位置设有一圆形凸台，圆形凸台上依次固定有直径大小与凸台相同的圆形磁铁32b和华司30b，盆架36的侧壁端部与外壳10固定。
如图6所示，盆架36上设有开缝360，开缝360共设有八条，八条开缝360在深度方向上均贯穿盆架36的侧壁并延伸到凸台上；在长度方向上均由盆架36的开口端向封闭端延伸，但只延伸至凸台与底部的交界处，并未延伸到底部，也就是说开缝360并未在长度上贯穿整个盆架。八条开缝360在凸台上深浅交替设置。八条开缝360在深度方向上的延长线均与盆架的回转轴线相交。
如图6所示，华司30b上设有开缝300b，开缝300b也设有八条，八条开缝300b在深度方向上均由华司30b的外边缘向中心延伸，且深浅交替设置。
如图6和图8共同所示，盆架36侧壁的端面上设有一与盆架36同轴的环形凹槽362，凹槽362内侧的侧壁的端面高于外侧的侧壁的端面，外壳10的底部搭接在凹槽362高度较低的侧壁的端面上并与高度较高的侧壁相抵靠，且外壳10底部的内表面与高度较高的侧壁端面齐平。高度较高的侧壁高出高度较低的侧壁的部分未设有开缝360。
本发明通过在导磁部件上设置开缝，切断了涡流的环路，阻止了绝大部分涡流的形成，有效的降低了导磁部件上的涡流损耗，提升了扬声器在高频的效率，减小了二次谐波失真，提升了扬声器的声学性能。由于在导磁部件上设置开缝有效的解决了导磁部件上产生涡流的技术问题，故无需在扬声器中增设短路环，减少了扬声器的内部部件，降低了生产成本，同时简化了扬声器的装配工艺，有效的提高了扬声器的生产效率及成品合格率。
上述两个实施例中各导磁部件上的开缝均设有八条，此为发明人根据降低涡流损耗的效果及对扬声器原有磁场的影响等多方面考虑后的优选实施方式，实际应用中并不限定为八条，技术人员可以根据导磁部件的体积及扬声器的性能要求来确定开缝的数量，至于设有其它数量开缝的具体实施方式与上述两个实施例均基本相同，故关于设有其它数量开缝的具体实施方式在此不再赘述。
本发明仅以上述两个实施例所描述的扬声器为例对本发明导磁部件设有开缝的技术方案进行了详细的阐述，而实际应用中此技术方案并不限于上述两种结构的扬声器中，只要是导磁部件上设有开缝，且此开缝是用来降低导磁部件上的涡流损耗，减小二次谐波失真，用以提升扬声器声学性能的产品均落入到本发明的保护范围内。
本发明不局限于上述具体的实施方式，本领域的普通技术人员从上述构思出发，不经过创造性的劳动，所做出的种种变换，均落在本发明的保护范围之内。

Claims (9)

  1. 一种扬声器，包括外壳，所述外壳内收容有振动系统和磁路系统，所述磁路系统包括结合在一起的磁铁及导磁件，其特征在于，所述磁铁和所述导磁件中的至少一个部件上设有若干条开缝，各条所述开缝的深度均沿水平方向延伸，各条所述开缝的长度均沿垂直方向延伸。
  2. 根据权利要求1所述的扬声器，其特征在于，各条所述开缝等间距的分布在各所述部件上。
  3. 根据权利要求2所述的扬声器，其特征在于，各所述部件均为圆形或圆环结构，各条所述开缝在深度方向上的延长线均与相应的所述部件的回转轴线相交。
  4. 根据权利要求3所述的扬声器，其特征在于，同一所述部件上的所述开缝深浅交替设置。
  5. 根据权利要求4所述的扬声器，其特征在于，所述开缝设在所述导磁件上，所述开缝在长度方向上贯穿所述导磁件。
  6. 根据权利要求1至5任一权利要求所述的扬声器，其特征在于，所述导磁件包括T铁和华司，所述T铁上设有所述开缝，各条所述开缝在深度方向上均由所述T铁的外边缘向中心延伸，并延伸至所述T铁的凸台上；各条所述开缝在长度方向上均贯穿所述T铁。
  7. 根据权利要求6所述的扬声器，其特征在于，所述华司为圆环结构，所述华司上设有所述开缝，各条所述开缝在深度方向上均由所述华司的内边缘向外边缘延伸。
  8. 根据权利要求1至5任一权利要求所述的扬声器，其特征在于，所述导磁件包括盆架和华司，所述盆架上设有所述开缝，各条所述开缝在深度方向上均贯穿所述盆架的环状侧壁，各条所述开缝在长度方向上均由所述盆架的开口端向封闭端延伸。
  9. 根据权利要求8所述的扬声器，其特征在于，所述华司为圆形结构，所述华司上设有所述开缝，各条所述开缝在深度方向上均由所述华司的外边缘向中心延伸。　
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