WO2017000499A1 - 一种扬声器结构 - Google Patents

一种扬声器结构 Download PDF

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Publication number
WO2017000499A1
WO2017000499A1 PCT/CN2015/096714 CN2015096714W WO2017000499A1 WO 2017000499 A1 WO2017000499 A1 WO 2017000499A1 CN 2015096714 W CN2015096714 W CN 2015096714W WO 2017000499 A1 WO2017000499 A1 WO 2017000499A1
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WO
WIPO (PCT)
Prior art keywords
speaker
shield
loudspeaker
magnetic
structure according
Prior art date
Application number
PCT/CN2015/096714
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English (en)
French (fr)
Inventor
董文强
邢明星
Original Assignee
歌尔声学股份有限公司
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Publication date
Application filed by 歌尔声学股份有限公司 filed Critical 歌尔声学股份有限公司
Priority to US15/573,660 priority Critical patent/US20180152774A1/en
Priority to EP15897026.9A priority patent/EP3316596A4/en
Publication of WO2017000499A1 publication Critical patent/WO2017000499A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0075—Magnetic shielding materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention belongs to the technical field of acoustic and electrical transduction, and in particular to the structural features of a microspeaker device.
  • Mobile electronic devices such as mobile phones and tablet computers have become indispensable necessities in modern life, and they usually have functions such as playing sound, networking communication, and taking pictures.
  • mobile phones and tablet computers are gradually having stronger sound performance, while the volume and shape are developing in a smaller and thinner direction, and the distance between the components is closer.
  • Micro-speakers in mobile electronic devices usually use moving coil speakers to generate sound through electromagnetic action.
  • moving coil speakers usually have magnetic leakage, and the magnetic field generated by the magnetic circuit system radiates outside the speaker structure, affecting other components in the electronic device such as the antenna and the camera.
  • the microspeaker uses a multi-magnetic circuit system, the magnetic field is stronger and it is easier to affect other components.
  • the following two methods are generally used to prevent the speaker structure from affecting other components.
  • Additional magnetically permeable material is placed around the speaker structure or inside the electronic device to form a magnetic shield that prevents the magnetic field of the speaker structure from radiating outward.
  • the space inside the electronic device is very limited, which will additionally occupy the space inside the electronic device, causing the volume and shape of the entire electronic device to change.
  • Reduce the magnetic properties of the speaker magnetic circuit system is very limited, which will additionally occupy the space inside the electronic device, causing the volume and shape of the entire electronic device to change.
  • An object of the present invention is to provide a technology capable of effectively preventing leakage of a speaker structure Program.
  • a speaker structure comprising:
  • a speaker housing for carrying the vibration assembly and the magnetic circuit system
  • the shield being disposed on the speaker housing
  • the shield is constructed of a magnetically permeable material to form a magnetic shield around the speaker structure.
  • the shield may be embedded within the speaker housing and/or mounted on an outer surface of the speaker housing.
  • the speaker housing may form a side wall around the speaker structure, and the shield may also be embedded in the interior of the side wall and/or mounted on an outer surface of the side wall.
  • the shielding member may be a rectangular sheet structure, and the material of the shielding member may be SPCC material.
  • the material of the shield is SPCC material.
  • vibration assembly can include:
  • the voice coil includes a lead wire and a vibration ring, and the vibration ring is fixedly connected to the diaphragm;
  • the lead is mounted on the speaker housing such that the ring is suspended in the speaker housing.
  • the magnetic circuit system can include:
  • Center Huasi the center Huasi is installed on the central magnet
  • basin frame for carrying the center magnet and the center washer, the basin frame being fixedly coupled to the speaker housing.
  • the speaker structure may further include a front cover fixedly mounted on the speaker housing, and the vibration assembly is enclosed in the speaker housing.
  • the material of the front cover may be a magnetic conductive material.
  • the speaker result provided by the invention can effectively prevent the magnetic circuit system by using the magnetic shielding effect
  • the generated magnetic field leaks from the speaker structure.
  • the shield of the present invention is disposed on the speaker housing to more effectively limit the range of radiation of the magnetic field.
  • the shield of the present invention can be embedded in the interior of the speaker housing to avoid taking up more space due to the provision of the shield.
  • the space inside the electronic device itself is very limited, and the speaker structure of the invention can effectively prevent magnetic leakage without affecting the performance of the speaker itself, and does not need to occupy the internal space of the electronic device, and the speaker structure of the invention can achieve significant technical effects. .
  • Figure 1 is a side cross-sectional view of the speaker housing in accordance with an embodiment of the present invention
  • FIG. 2 is an exploded view of the speaker housing and the shield member in a specific embodiment of the present invention
  • Figure 3 is a structural view of the speaker housing in a specific embodiment of the present invention.
  • FIG. 4 is an exploded view of the components of the speaker structure in accordance with an embodiment of the present invention.
  • Figure 5 is a side cross-sectional view showing the speaker structure in a specific embodiment of the present invention.
  • Figure 6 is a structural diagram of the speaker structure in a specific embodiment of the present invention.
  • the present invention provides a speaker structure including: a vibration assembly, a magnetic circuit system, a speaker housing, and a shield.
  • the vibration assembly and the magnetic circuit system are mounted inside the speaker housing, and the vibration assembly generates sound by vibration under the action of a magnetic field generated by the magnetic circuit system.
  • the shielding member is disposed on the speaker casing, and the shielding member is composed of a magnetic conductive material, which can generate a magnetic shielding effect around the speaker structure according to the magnetic shielding principle, and change a magnetic field line of a magnetic field generated by the magnetic circuit system.
  • the magnetic field is prevented from radiating out of the speaker structure.
  • the shield may be formed around the magnetic circuit system without direct contact with the magnetic circuit system.
  • the shielding member of the present invention is disposed on the speaker housing, which can minimize the space occupied by the shielding device in the electronic device. . Moreover, the magnetic shielding function can effectively prevent the magnetic leakage phenomenon and avoid the influence of the magnetic field on other electronic device components around the speaker structure.
  • the shield 2 can be embedded inside the speaker housing 1.
  • the speaker housing 1 is usually made of a plastic material and can be produced by injection molding.
  • the shielding member 2 can be placed in an injection mold in advance, and the shielding member 2 is injection molded inside the speaker structure by an injection molding process.
  • the overall shape of the speaker housing 1 is generally not changed by the injection of the shield member 2, and the shield member 2 does not affect the overall shape of the speaker structure at all, so that no additional electronic occupation is required.
  • the internal space of the device is usually made of a plastic material and can be produced by injection molding.
  • the shielding member 2 can be placed in an injection mold in advance, and the shielding member 2 is injection molded inside the speaker structure by an injection molding process.
  • the overall shape of the speaker housing 1 is generally not changed by the injection of the shield member 2, and the shield member 2 does not affect the overall shape of the speaker structure at all, so that no additional electronic occupation is required.
  • the internal space of the device is usually made of a plastic material and can be produced by injection molding.
  • the speaker housing 1 may constitute a four-sided side wall of the speaker structure, surrounding a basic shape forming the speaker structure, and the shielding member 2 may be embedded in a sidewall of the speaker structure.
  • FIG. 2 shows the relative position of the shielding member 2 and the speaker housing 1.
  • the speaker structure includes four shielding members 2 respectively embedded in the four side walls of the speaker structure. . This distribution of the shield 2 can be wrapped around An effective magnetic shielding effect is formed in the spatial position of the speaker structure to prevent the magnetic field generated by the magnetic circuit system from leaking out from the side of the speaker structure.
  • the shield 2 may also be mounted on the outer surface of the speaker housing 1.
  • the shield 2 can be mounted on the outer surface of the four-sided side wall, and the shield 2 can constitute a magnetic shielding effect to weaken or prevent magnetic leakage. Since the shield 2 abuts against the outer surface of the speaker housing 1, the shield 2 does not additionally occupy a space inside the electronic device. More preferably, the position at which the shield 2 is predetermined to be mounted on the speaker housing 1 may have a recess for the shield 2 to be embedded inwardly from the outer surface of the speaker housing 1. The groove can reduce the space in which the shield 2 occupies outside the range of the speaker housing 1.
  • the shield 2 may be in the form of a sheet.
  • the shield 2 is a rectangular sheet-like structure, and the rectangular shield 2 is easily embedded in the side wall of the speaker structure.
  • those skilled in the art can design the shield 2 into different structures and shapes according to the mating relationship of the shield 2 and the speaker housing 1.
  • the shield 2 is made of a magnetically permeable material that is easily magnetized, and in the embodiment of the invention, the shield 2 can be made of SPCC steel sheet.
  • the shielding member 2 may be made by other iron-carbon alloys, or iron, cobalt, nickel, and alloys thereof, and the present invention is not specifically limited thereto. As long as the material itself is not magnetic, it is easy to magnetize.
  • the vibration assembly may include a diaphragm 31, a voice coil, and a composite layer 33, and an edge of the diaphragm 31 is mounted on the speaker housing 1.
  • the voice coil includes a lead wire 322 and a vibration ring 321 , and the vibration ring 321 is mounted on the diaphragm 31 , and the lead wire 322 is taken out from the vibration ring 321 .
  • the composite layer 33 is attached to the surface at the center of the diaphragm 31.
  • the lead wire 322 that is drawn out is mounted on the speaker housing 1 and the vibration ring 321 is suspended in the speaker housing 1.
  • the magnetic circuit system may include a center magnet 41, a center washer 42 and a basin frame 43.
  • the basin frame 43 is configured to carry the center magnet 41 and the center washer 42.
  • the center magnet 41 and the center washer 42 are sequentially installed in the basin frame 43.
  • the basin frame 43 and the wall frame 43 The bottom of the sounder housing 1 is fixedly connected.
  • a magnetic gap is formed between the center magnet 41, the center washer 42 and the basin frame 43, and the vibration ring 321 is suspended in the magnetic gap.
  • the shield 2 surrounds the magnetic circuit system, and a magnetic shielding effect can be formed on the side of the speaker structure, effectively applying a magnetic field. Sealed in the speaker housing 1 to weaken or prevent magnetic flux leakage.
  • the shield 2 is formed in the space of the speaker structure, does not need to occupy more space, and does not affect the internal space of the electronic device to be installed, thereby preventing the electronic device from being arranged to accommodate the speaker structure. Its volume and shape change.
  • the speaker structure may further include a front cover 5 fixedly mounted on the top of the speaker housing 1, and the vibration assembly is sealed in the speaker housing 1 in.
  • the material of the front cover 5 may also be a magnetic conductive material such as SPCC steel or iron, cobalt, nickel and alloys thereof.
  • the front cover 5 can also function as a shield 2 for preventing a magnetic field generated by the magnetic circuit system from leaking from the top surface of the speaker housing 1.

Abstract

本发明公开了一种扬声器结构，其中包括：振动组件、磁路系统、扬声器外壳以及屏蔽件，所述扬声器外壳用以承载所述振动组件和磁路系统。所述屏蔽件设置在所述扬声器外壳上。所述屏蔽件由导磁材料构成，以在所述扬声器结构周围形成磁屏蔽。所述屏蔽件可以嵌于所述扬声器外壳的内部和/或安装在所述扬声器外壳的外表面上。本发明提供的扬声器结构既能够有效防止漏磁现象，又不会影响到产品自身的声音性能，并且，屏蔽件不会在其所安装在的电子设备内部占用额外的空间。

Description

一种扬声器结构 技术领域
本发明属于声电换能技术领域，具体地，本发明涉及一种微型扬声器装置的结构特征。
背景技术
手机、平板电脑等移动电子设备已成为现代生活不可缺少的必需品，其通常具有播放声音、联网通讯、拍照等功能。随着移动电子设备的发展，手机、平板电脑逐渐具有更强的声音性能，而体积、外形则向更小更薄的方向发展，各部件之间的距离更近。移动电子设备中的微型扬声器通常采用动圈式扬声器，通过电磁作用产生声音。但动圈式扬声器通常都有漏磁现象，磁路系统产生的磁场辐射到扬声器结构之外，对电子设备中的其它部件如天线、摄像头造成影响。当微型扬声器采用的是多磁路磁路系统时，磁场更强，更容易对其他部件产生影响。
在现有技术中，通常采用以下两种方式防止扬声器结构对其它部件造成影响。1、在扬声器结构周围或电子设备内部设置额外的导磁材料，形成磁屏蔽，阻止扬声器结构的磁场向外辐射。但是，电子设备内部的空间十分有限，这种方式会额外占用电子设备内部的空间，致使整个电子设备的体积和外形发生改变。2、降低扬声器磁路系统的磁性。但是，降低磁路系统的性能会影响扬声器结构的声音质量和音量。
因此，有必要提供一种新的防漏磁技术方案，该方案不仅能够有效改善动圈式扬声器的漏磁现象，还应尽量避免额外占用电子设备的内部空间，同时不能对微型扬声器的自身性能造成影响。
发明内容
本发明的一个目的是提供一种能够有效防止扬声器结构漏磁的技术 方案。
根据本发明的第一方面，提供了一种扬声器结构，其中包括：
振动组件；
磁路系统；
扬声器外壳，用以承载所述振动组件和磁路系统；
屏蔽件，所述屏蔽件设置在所述扬声器外壳上；
所述屏蔽件由导磁材料构成，以在所述扬声器结构周围形成磁屏蔽。
所述屏蔽件可以嵌于所述扬声器外壳的内部和/或安装在所述扬声器外壳的外表面上。
所述扬声器外壳可以构成所述扬声器结构四周的侧壁，所述屏蔽件亦可以嵌于所述侧壁的内部和/或安装在所述侧壁的外表面上。
优选的，所述屏蔽件可以为矩形片状结构，所述屏蔽件的材料可以为SPCC材料。
特别的，所述屏蔽件的材料为SPCC材料。
另外，所述振动组件可以包括：
振膜，所述振膜的边缘安装在所述扬声器外壳上；
音圈，所述音圈包括引线和振环，所述振环与所述振膜固定连接；
复合层，所述复合层安装在所述振膜上；
所述引线安装在所述扬声器外壳上，以使所述振环悬于所述扬声器外壳中。
所述磁路系统可以包括：
中心磁铁；
中心华司，所述中心华司安装在所述中心磁铁上；
盆架，所述盆架用于承载所述中心磁铁和中心华司，所述盆架与所述扬声器外壳固定连接。
优选的，所述扬声器结构还可以包括前盖，所述前盖固定安装在所述扬声器外壳上，将所述振动组件封在所述扬声器外壳中。更优的，所述前盖的材料可以是导磁材料。
本发明提供的扬声器结果能够利用磁屏蔽效果有效的防止磁路系统 产生的磁场从扬声器结构中漏出。相较于其它利用磁屏蔽效果的现有技术，本发明的屏蔽件设置在所述扬声器外壳上，能够更有效的限制磁场的辐射范围。另外，本发明的屏蔽件可以嵌于所述扬声器外壳的内部，避免由于设置屏蔽件而占用更多额外的空间。电子设备内部的空间本身十分有限，本发明的扬声器结构既能够有效防止漏磁，又不影响扬声器自身的性能，且无需额外占用电子设备的内部空间，本发明的扬声器结构能够达到显著的技术效果。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明具体实施例中所述扬声器外壳的侧面剖视图；
图2是本发明具体实施例中所述扬声器外壳和屏蔽件的爆照图；
图3是本发明具体实施例中所述扬声器外壳的结构图；
图4是本发明具体实施例中所述扬声器结构的零件爆炸图；
图5是本发明具体实施例中所述扬声器结构的侧面剖视图；
图6是本发明具体实施例中所述扬声器结构的结构图。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例 性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本发明提供了一种扬声器结构，其中包括：振动组件、磁路系统、扬声器外壳以及屏蔽件。所述振动组件和磁路系统安装在所述扬声器外壳内部，所述振动组件在所述磁路系统产生的磁场的作用下，通过振动产生声音。所述屏蔽件设置在所述扬声器外壳上，屏蔽件由导磁材料构成，根据磁屏蔽原理，其能够在所述扬声器结构周围产生磁屏蔽效应，改变所述磁路系统产生的磁场的磁力线，阻止磁场辐射到所述扬声器结构之外。优选的，为了形成更好的磁屏蔽效果，所述屏蔽件可以形成在所述磁路系统的周围，不与所述磁路系统直接接触。相较于现有技术在电子设备中设置的用于形成磁屏蔽的导磁材料，本发明所述的屏蔽件设置在所述扬声器外壳上，能够尽量减少屏蔽件在电子设备中占用额外的空间。而且，磁屏蔽作用能够有效的防止漏磁现象，避免磁场对扬声器结构周围的其它电子设备部件产生影响。
特别的，如图1所示，在本发明的一种实施例中，所述屏蔽件2可以嵌于所述扬声器外壳1内部。所述扬声器外壳1通常为塑料材料，可以通过注塑成型的方式制作，所述屏蔽件2可以预先置于注塑模具中，通过注塑工艺将所述屏蔽件2注塑在所述扬声器结构内部。在图1所示的实施例中，所述扬声器外壳1的整体外形通常不会因注塑有屏蔽件2而产生变化，屏蔽件2完全不会影响扬声器结构的整体外形，从而不会额外占用电子设备的内部空间。
优选的，如图2所示，所述扬声器外壳1可以构成所述扬声器结构的四面侧壁，包围形成所述扬声器结构的基本外形，所述屏蔽件2可以嵌于所述扬声器结构的侧壁中。图2示出了所述屏蔽件2与所述扬声器外壳1的相对位置，在本实施例中，所述扬声器结构中包括四片屏蔽件2，分别嵌于所述扬声器结构的四面侧壁中。屏蔽件2的这种分布方式能够在环绕 扬声器结构的空间位置上形成有效的磁屏蔽效应，防止磁路系统产生的磁场从扬声器结构的侧面漏出。
另外，如图3所示，所述屏蔽件2还可以安装在所述扬声器外壳1的外表面上。当所述扬声器外壳1构成所述扬声器结构的侧壁时，所述屏蔽件2可以安装在四面侧壁的外表面上，所述屏蔽件2可以构成磁屏蔽效应，减弱或防止漏磁现象。由于所述屏蔽件2紧贴所述扬声器外壳1的外表面，所以屏蔽件2不额外占用电子设备内部的空间。更优的，在所述扬声器外壳1上预定安装所述屏蔽件2的位置可以具有凹槽，以供所述屏蔽件2从所述扬声器外壳1的外表面向内嵌入。所述凹槽可以减少所述屏蔽件2占用所述扬声器外壳1范围以外的空间。
优选的，为了便于在所述扬声器外壳1中注塑或者在外壳的表面安装所述屏蔽件2，所述屏蔽件2可以为片状结构。如图1-3所示，在本发明的实施例中，所述屏蔽件2为矩形片状结构，矩形的屏蔽件2易于嵌入所述扬声器结构的侧壁中。在本发明的其它实施例中，本领域技术人员可以根据屏蔽件2与所述扬声器外壳1的配合关系，将所述屏蔽件2设计成不同的结构和形状。
所述屏蔽件2由易于磁化的导磁材料制成，在本发明的实施例中，可以采用SPCC钢片制成所述屏蔽件2。在本发明的其他实施例中，本领域技术人员还可以采用其他铁碳合金，或者铁、钴、镍及其合金制作所述屏蔽件2，本发明对此不做具体限制，屏蔽件2的材料只要自身不带磁性，但易于磁化即可。
另外，如图4所示，所述振动组件可以包括：振膜31、音圈以及复合层33，所述振膜31的边缘安装在所述扬声器外壳1上。所述音圈包括引线322和振环321，所述振环321安装在所述振膜31上，所述引线322从所述振环321中引出。所述复合层33贴装在所述振膜31中心处的表面上。引出的引线322安装在所述扬声器外壳1上，将所述振环321悬于所述扬声器外壳1中。所述磁路系统可以包括：中心磁铁41、中心华司42以及盆架43。所述盆架43用于承载所述中心磁铁41和中心华司42，所述中心磁铁41和中心华司42依次安装在所述盆架43中，所述盆架43与所述扬 声器外壳1的底部固定连接。所述中心磁铁41、中心华司42与所述盆架43之间具有磁间隙，所述振环321悬于所述磁间隙中。如图5、6所示，本发明所述的扬声器结构完成装配后，所述屏蔽件2围绕在所述磁路系统周围，能够在所述扬声器结构的侧面形成磁屏蔽效应，有效的将磁场封在所述扬声器外壳1中，减弱或防止漏磁现象。另外，所述屏蔽件2形成在所述扬声器结构的空间范围内，无需额外占用更多空间，不会对所要安装在的电子设备的内部空间造成影响，从而防止电子设备为了容纳扬声器结构而使其体积和外形产生改变。
特别的，如图4-6所示，所述扬声器结构还可以包括前盖5，所述前盖5固定安装在所述扬声器外壳1的顶部，将所述振动组件封在所述扬声器外壳1中。优选的，所述前盖5的材料也可以是导磁材料，例如SPCC钢材或铁、钴、镍及其合金。所述前盖5也可以作为屏蔽件2，用于防止磁路系统产生的磁场从扬声器外壳1的顶面漏出。
以上是本发明提供的扬声器结构，虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (10)

  1. 一种扬声器结构，其特征在于，包括：
    振动组件；
    磁路系统；
    扬声器外壳(1)，用以承载所述振动组件和磁路系统；
    屏蔽件(2)，所述屏蔽件(2)设置在所述扬声器外壳(1)上；
    所述屏蔽件(2)由导磁材料构成，以在所述扬声器结构周围形成磁屏蔽。
  2. 根据权利要求1所述的扬声器结构，其特征在于，所述屏蔽件(2)嵌于所述扬声器外壳(1)的内部和/或安装在所述扬声器外壳(1)的外表面上。
  3. 根据权利要求1所述的扬声器结构，其特征在于，所述扬声器外壳(1)构成所述扬声器结构四周的侧壁。
  4. 根据权利要求3所述的扬声器结构，其特征在于，所述屏蔽件(2)嵌于所述侧壁的内部和/或安装在所述侧壁的外表面上。
  5. 根据权利要求1-4任意之一所述的扬声器结构，其特征在于，所述屏蔽件(2)为矩形片状结构。
  6. 根据权利要求1-4任意之一所述的扬声器结构，其特征在于，所述屏蔽件(2)的材料为SPCC材料。
  7. 根据权利要求1-4任意之一所述的扬声器结构，其特征在于，所述振动组件包括：
    振膜(31)，所述振膜(31)的边缘安装在所述扬声器外壳(1)上；
    音圈，所述音圈包括引线(322)和振环(321)，所述振环(321)与所述振膜(31)固定连接；
    复合层(33)，所述复合层(33)安装在所述振膜(31)上；
    所述引线(322)安装在所述扬声器外壳(1)上，以使所述振环(321)悬于所述扬声器外壳(1)中。
  8. 根据权利要求1-4任意之一所述的扬声器结构，其特征在于，所述 磁路系统包括：
    中心磁铁(41)；
    中心华司(42)，所述中心华司(42)安装在所述中心磁铁(41)上；
    盆架(43)，所述盆架(43)用于承载所述中心磁铁(41)和中心华司(42)，所述盆架(43)与所述扬声器外壳(1)固定连接。
  9. 根据权利要求1-4任意之一所述的扬声器结构，其特征在于，所述扬声器结构包括前盖(5)，所述前盖(5)固定安装在所述扬声器外壳(1)上，将所述振动组件封在所述扬声器外壳(1)中。
  10. 根据权利要求9所述的扬声器结构，其特征在于，所述前盖(5)的材料为导磁材料。
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