WO2020140539A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020140539A1
WO2020140539A1 PCT/CN2019/110728 CN2019110728W WO2020140539A1 WO 2020140539 A1 WO2020140539 A1 WO 2020140539A1 CN 2019110728 W CN2019110728 W CN 2019110728W WO 2020140539 A1 WO2020140539 A1 WO 2020140539A1
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WO
WIPO (PCT)
Prior art keywords
groove
magnetic
glue
steel
housing
Prior art date
Application number
PCT/CN2019/110728
Other languages
English (en)
French (fr)
Inventor
张古清
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020140539A1 publication Critical patent/WO2020140539A1/zh

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Classifications

    • 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
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • 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
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for 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
    • 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
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
    • 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

Definitions

  • the utility model relates to the field of acoustoelectric conversion, in particular to a speaker used in portable electronic products.
  • the magnetic steel and the magnetic yoke of the loudspeaker are glued and fixed by glue, and the glue is applied between the magnetic bowl and the magnetic steel.
  • the glue is fixed after being pressed by the press. The amount of glue is small, and the magnetic steel is easy to fall when dropped.
  • the technical problem to be solved by the utility model is to provide a loudspeaker with a simple structure and not easy to fall with magnetic steel.
  • the present invention provides a loudspeaker, which includes a housing with a housing space, a magnetic circuit system housed in the housing space, and a vibration system held in the housing, the magnetic circuit system It includes a magnetic yoke fixedly connected to the housing and a magnetic steel assembled with the magnetic yoke.
  • the magnetic yoke includes a bottom wall connected to the magnetic steel, and the bottom wall includes an upper part close to the vibration system A surface and a lower surface opposite to the upper surface, the upper surface is recessed toward the lower surface to form a first groove and a second groove spaced apart from each other, the magnetic steel is along the vibration system
  • the orthographic projection of the vibration direction on the upper surface completely covers the first groove, the second groove is disposed outside the range of the orthographic projection, the magnetic steel and the bottom wall are glued and connected by glue, The glue is contained in the first groove.
  • the magnetic yoke further includes a side wall bent and extending from opposite ends of the bottom wall toward the vibration system, the side wall is spaced from the magnetic steel, and the magnetic circuit system further It includes a pole core fixed on the side of the magnetic steel away from the upper surface.
  • the depth of the first groove is smaller than the depth of the second groove.
  • the first groove is opposite to the magnetic steel and has a rectangular shape
  • the second groove is in a closed ring shape
  • the second groove is symmetrically wound around the outer periphery of the first groove .
  • the outer edge of the orthographic projection of the magnetic steel on the upper surface coincides with the inner edge of the second groove.
  • the interval between the first groove and the second groove is 0.2-1 mm.
  • the glue is anaerobic glue.
  • the vibration system includes a diaphragm fixedly connected to the housing and used for vibration generation, a voice coil located under the diaphragm and driving the vibration of the diaphragm, and a voice coil lead extending from the voice coil, so
  • the magnetic steel is spaced from the side wall to form a magnetic gap, and the voice coil is suspended in the magnetic gap.
  • the speaker further includes a conductive terminal, and the conductive terminal connects the lead of the voice coil and an external power source to realize electrical connection between the voice coil and the external power source.
  • an inner cavity is formed between a side of the diaphragm close to the magnetic circuit system and the casing, a through hole communicating with the inner cavity is formed through the casing, and the speaker further includes A steel sheet fixed to the housing and covering the through hole, and a leakage hole communicating with the through hole and the outside is opened on the steel sheet.
  • a first groove for containing glue is provided on the bottom wall of the magnetic yoke, which increases the bonding area, improves the bonding stability, and prevents the magnetic steel from falling,
  • the glue is an anaerobic glue. Excess glue overflows from the first groove and enters the second groove. After pressing, the bottom wall is bonded to the magnetic steel to form a seal.
  • the glue in the first groove is solidified to realize the connection between the magnetic steel and the bottom wall, and the overflowed glue is accommodated in the second groove without affecting the vibration space of the vibration system.
  • 1 is a schematic diagram of the stereo structure of the speaker provided by the utility model
  • FIG. 2 is a schematic diagram of the exploded structure of the speaker provided by the utility model
  • FIG. 3 is a front view of the yoke shown in FIG. 2;
  • FIG. 4 is a cross-sectional view of the speaker shown in FIG. 1 along line A-A;
  • FIG. 5 is an enlarged view of the area B in FIG. 4.
  • the present invention provides a speaker 100
  • the speaker 100 includes a housing 1 with a receiving space 1, a magnetic circuit system 2 received in the receiving space, and holding the housing 1.
  • a vibration system 3 having a diaphragm 31, a conductive terminal 4 connecting the vibration system 3 to an external power source, and a steel sheet 5 fixedly connected to the housing 1.
  • the housing 1 is used to house and protect other components of the speaker 100.
  • the housing 1 has a rectangular frame shape.
  • the housing 1 includes a basin frame 11, an upper cover 12 covered on the basin frame 11, and a through hole 13 provided through the housing 1, the basin frame 11 cooperates with the upper cover 12 Form the accommodation space.
  • the side of the diaphragm 31 near the magnetic circuit system 2 and the housing 1 form an inner cavity, and the through hole 13 communicates with the inner cavity.
  • the through hole 13 is provided on a side of the basin frame 11 away from the upper cover 12.
  • the magnetic circuit system 2 is used to drive the vibration system 3 to vibrate and sound.
  • the magnetic circuit system 2 includes a magnetic yoke 21 fixedly connected to the housing 1 and a magnetic group assembled with the magnetic yoke 21. Steel 22 and pole core 23 attached to the magnetic steel 22.
  • the yoke 21 has a bowl-shaped structure, and the magnetic steel 22 cooperates with the yoke 21 to form a magnetic gap.
  • the yoke 21 includes a bottom wall 211 connected to the magnetic steel 22 and a side wall 212 bent and extending from opposite ends of the bottom wall 211 toward the vibration system 3.
  • the bottom wall 211 and The side walls 212 cooperate to form an accommodation space, the magnetic steel 22 is accommodated in the accommodation space, and the side walls 212 cooperate with the magnetic steel 22 to form a magnetic gap.
  • the yoke 21 may also have a flat-plate structure, and a magnetic gap is formed by providing a secondary magnetic steel spaced apart from the magnetic steel 22 on the yoke 21, but it does not affect the utility
  • the correct expression of the new content belongs to the protection scope of the utility model.
  • the bottom wall 211 includes an upper surface 2111 close to the vibration system 3 and a lower surface 2112 spaced apart from the upper surface 2111, the upper surface 2111 faces the lower surface 2112
  • the direction recess is formed with a first groove 10 and a second groove 20 that are spaced apart from each other.
  • the orthographic projection of the magnetic steel 22 along the vibration direction of the vibration system 3 on the upper surface 2111 completely covers the first groove 10, and the second groove 20 is disposed outside the range of the orthographic projection ,
  • the magnetic steel 22 and the bottom wall 211 are glued and connected by glue, the glue is contained in the first groove 10, the glue is anaerobic glue, and its characteristic is when there is no oxygen between glued surfaces To cure.
  • the pole core 23 is fixed on the side of the magnetic steel 22 away from the upper surface 2111.
  • the arrangement of the first groove 10 plays a role of gluing, which can increase the amount of glue when the magnetic steel 22 and the bottom wall 211 are glued together.
  • the glue is in contact with the bottom surface and the side surfaces of the first groove 10 to increase the contact area and enhance the glue effect.
  • the magnetic steel 22 is not easy to fall off after being connected to the bottom wall 211.
  • the first groove 10 is filled with an excessive amount of glue, that is, the amount of the glue is greater than the capacity of the first groove 10, and the magnetic steel 22 is pressed against the bottom wall 211 for installation , Excess glue overflows from the first groove 10 into the second groove 20, at this time, glue is injected between the bottom wall 211 and the magnetic steel 22, the magnetic steel 22 Compressed with the yoke 21, the oxygen between the bottom wall 211 and the magnetic steel 22 is discharged, and the glue between the bottom wall 211 and the magnetic steel 22 is solidified to realize the yoke 21 Glued connection with the magnetic steel 22.
  • glue is injected between the bottom wall 211 and the magnetic steel 22
  • the magnetic steel 22 Compressed with the yoke 21
  • the oxygen between the bottom wall 211 and the magnetic steel 22 is discharged
  • the glue between the bottom wall 211 and the magnetic steel 22 is solidified to realize the yoke 21 Glued connection with the magnetic steel 22.
  • the outer edge of the orthographic projection of the magnetic steel 22 on the upper surface 2111 coincides with the inner edge of the second groove 20 to ensure that excess glue can smoothly overflow into the second groove 20,
  • the interval between the first groove 10 and the second groove 20 is 0.2-1 mm, which can ensure a better sealing effect, and at the same time make the cross-sectional area of the first groove 10 larger, can Accommodate more glue.
  • the depth of the first groove 10 is smaller than the depth of the second groove 20, so that the second groove 20 can contain more overflowing glue.
  • the first groove 10 and the magnetic steel 22 face each other and have a rectangular shape
  • the second groove has a closed ring shape of 20
  • the second groove 20 is symmetrically wound around the first groove
  • the outer circumference of 10 allows the overall structure of the yoke 21 to be arranged symmetrically, without affecting the overall vibration effect of the speaker 100.
  • the vibration system 3 is used to vibrate and sound.
  • the vibration system 3 includes a diaphragm 31 for vibrating and sounding, and a sound located below the diaphragm 31 and used to drive the diaphragm 31 to vibrate and sound.
  • the coil 32 and the voice coil lead 33 extending from the voice coil 32.
  • the diaphragm 31 is interposed between the upper cover 12 and the basin frame 11, and the voice coil 32 is suspended in the magnetic gap.
  • the conductive terminal 4 connects the voice coil lead 33 to an external power source, and realizes the electrical connection between the voice coil 32 and the external power source.
  • the steel sheet 5 is fixed to the basin frame 11 and covers the through hole 13.
  • the steel sheet 5 is provided with a leakage hole 50 that communicates the through hole 13 with the outside world.
  • the leakage hole 50 destroys the sealing of the inner cavity, destroys the resonance conditions of the inner cavity, weakens resonance and reduces distortion, and at the same time, the leakage hole 50 can also balance the air pressure inside the speaker, thereby effectively improving the speaker Acoustic quality.
  • a first groove 10 for containing glue is provided on the bottom wall 211 of the yoke 21, which increases the bonding area, improves the bonding stability, and avoids the magnetic
  • the glue is anaerobic glue. Excess glue overflows from the first groove 10 and enters the second groove 20. After pressing, the bottom wall 211 and the magnetic The steel 22 is bonded to form a seal, and the glue in the first groove 10 is solidified to realize the connection between the magnetic steel 22 and the bottom wall 211.
  • the overflowed glue is accommodated in the second groove 20. Affect the vibration space of the vibration system 3.

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

Abstract

本实用新型提供了一种扬声器。所述扬声器包括壳体、磁路系统及振动系统，所述磁路系统包括磁轭及磁钢，所述磁轭包括与所述磁钢连接的底壁，所述底壁包括靠近所述振动系统的上表面及与所述上表面相对设置的下表面，所述上表面朝所述下表面方向凹陷形成有相互间隔设置的第一凹槽和第二凹槽，所述磁钢沿所述振动系统的振动方向在所述上表面的正投影完全覆盖所述第一凹槽，所述第二凹槽设置在所述正投影的范围之外，所述磁钢与所述底壁通过胶水胶合连接，所述胶水收容于所述第一凹槽内。与相关技术相比，本实用新型提供的扬声器中，磁钢与磁轭连接牢靠，不易脱落。

Description

扬声器 技术领域
本实用新型涉及声电转换领域，尤其涉及一种运用于便携式电子产品的扬声器。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器被大量应用到现在的智能移动设备之中。
相关技术中，扬声器的磁钢与磁轭通过胶水胶合固定，胶水涂在磁碗与磁钢之间，经压机压合后胶合固定，胶水量较少，跌落时易掉磁钢。
因此，有必要提供一种新的扬声器来解决上述问题。
 技术问题
本实用新型要解决的技术问题是提供一种结构简单、磁钢不易跌落的扬声器。
 技术解决方案
为解决上述技术问题，本实用新型提供了一种扬声器，包括具有收容空间的壳体、收容于所述收容空间内的磁路系统及固持于所述壳体的振动系统，所述磁路系统包括与所述壳体固定连接的磁轭以及组配于所述磁轭的磁钢，所述磁轭包括与所述磁钢连接的底壁，所述底壁包括靠近所述振动系统的上表面及与所述上表面相对设置的下表面，所述上表面朝所述下表面方向凹陷形成有相互间隔设置的第一凹槽和第二凹槽，所述磁钢沿所述振动系统的振动方向在所述上表面的正投影完全覆盖所述第一凹槽，所述第二凹槽设置在所述正投影的范围之外，所述磁钢与所述底壁通过胶水胶合连接，所述胶水收容于所述第一凹槽内。
优选的，所述磁轭还包括自所述底壁的相对两端向靠近所述振动系统方向弯折延伸的侧壁，所述侧壁与所述磁钢间隔设置，所述磁路系统还包括固定在所述磁钢远离所述上表面一侧的极芯。
优选的，所述第一凹槽的深度小于所述第二凹槽的深度。
优选的，所述第一凹槽与所述磁钢正对且呈矩形状，所述第二凹槽呈闭合环状，且所述第二凹槽对称绕设在所述第一凹槽外周。
优选的，所述磁钢在所述上表面的正投影的外边缘与第二凹槽的内边缘重合。
优选的，所述第一凹槽与所述第二凹槽之间的间隔为0.2-1mm。
优选的，所述胶水为厌氧胶。
优选的，所述振动系统包括与所述壳体固定连接并用于振动发生的振膜、位于振膜下方并驱动所述振膜振动的音圈以及自所述音圈延伸的音圈引线，所述磁钢与所述侧壁间隔形成磁间隙，所述音圈悬置于所述磁间隙内。
优选的，所述扬声器还包括导电端子，所述导电端子连接所述音圈引线与外界电源，实现所述音圈与外界电源的电连接。
优选的，所述振膜靠近所述磁路系统的一侧与所述壳体之间围成内腔，所述壳体贯穿开设有与所述内腔连通的通孔，所述扬声器还包括与所述壳体固定并覆盖所述通孔的钢片，所述钢片上开设有连通所述通孔与外界的泄漏孔。
 有益效果
与相关技术相比，本实用新型提供的扬声器中，在磁轭的底壁上设置容纳胶水的第一凹槽，加大了胶合面积，提高了胶合稳定性，避免所述磁钢的跌落，同时，所述胶水为厌氧胶，过量的胶水由所述第一凹槽溢出，进入所述第二凹槽，压合后，所述底壁与所述磁钢贴合，形成密封，所述第一凹槽内的胶水固化，实现所述磁钢与所述底壁的连接，溢出的胶水收容于所述第二凹槽内，不影响所述振动系统的振动空间。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型提供的扬声器的立体结构示意图；
图2为本实用新型提供的扬声器的分解结构示意图；
图3为图2所示的磁轭的正视图；
图4为图1所示的扬声器沿A-A线的剖视图；
图5为图4中B区域的放大图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请结合参阅图1和图2，本实用新型提供了一种扬声器100，所述扬声器100包括具有收容空间的壳体1、收容于所述收容空间的磁路系统2、固持于所述壳体1并具有振膜31的振动系统3、连接所述振动系统3与外界电源的导电端子4及与所述壳体1固定连接的钢片5。
所述壳体1用于收容并保护所述扬声器100的其他部件，优选的，所述壳体1呈矩形框状。具体的，所述壳体1包括盆架11、盖设于所述盆架11的上盖12以及贯穿所述壳体1设置的通孔13，所述盆架11与所述上盖12配合形成所述收容空间。所述振膜31靠近所述磁路系统2的一侧与所述壳体1之间围成内腔，所述通孔13与所述内腔连通。具体的，所述通孔13设置于所述盆架11远离所述上盖12的一侧。
所述磁路系统2用于驱动所述振动系统3振动发声，具体的，所述磁路系统2包括与所述壳体1固定连接的磁轭21、组配于所述磁轭21的磁钢22和贴附于所述磁钢22的极芯23。
请参阅图3，在本实施例中，所述磁轭21呈碗状结构，所述磁钢22与所述磁轭21配合形成磁间隙。所述磁轭21包括与所述磁钢22连接的底壁211及自所述底壁211的相对两端向靠近所述振动系统3方向弯折延伸的侧壁212，所述底壁211和所述侧壁212配合形成容纳空间，所述磁钢22收容于所述容纳空间内，所述侧壁212配合所述磁钢22形成磁间隙。在其他实施例中，所述磁轭21还可以为平板状结构，通过在所述磁轭21上设置与所述磁钢22间隔的副磁钢来形成磁间隙，但其并不影响本实用新型内容的正确表达，均属于本实用新型的保护范围内。
请参阅图3至图5，所述底壁211包括靠近所述振动系统3的上表面2111及与所述上表面2111相对间隔设置的下表面2112，所述上表面2111朝向所述下表面2112方向凹陷形成有相互间隔的第一凹槽10和第二凹槽20。所述磁钢22沿所述振动系统3的振动方向在所述上表面2111的正投影完全覆盖所述第一凹槽10，所述第二凹槽20设置在所述正投影的范围之外，所述磁钢22与所述底壁211通过胶水胶合连接，所述胶水收容于所述第一凹槽10内，所述胶水为厌氧胶，其特性为胶合面之间不存在氧气时才能固化。所述极芯23固定在所述磁钢22远离所述上表面2111的一侧。
可以理解的是，与相关技术相比，所述第一凹槽10的设置，起到了藏胶的作用，可以增加所述磁钢22与所述底壁211胶合时胶水的量，同时所述胶水与所述第一凹槽10的底面及侧面接触，加大了接触面积，加强了胶合效果，所述磁钢22与所述底壁211连接后不易脱落。
安装时，向所述第一凹槽10内填入过量的胶水，即所述胶水的量大于所述第一凹槽10的容量，所述磁钢22与所述底壁211压合安装时，过量的胶水从所述第一凹槽10内溢出进入所述第二凹槽20内，此时，所述底壁211与所述磁钢22之间被注入胶水，将所述磁钢22与所述磁轭21压合，所述底壁211与所述磁钢22之间的氧气被排出，所述底壁211与所述磁钢22之间的胶水固化，实现所述磁轭21与所述磁钢22的胶合连接。可以理解的是，所述底壁211与所述磁钢22贴合后，形成密封，阻断氧气进入所述第一凹槽10，此时，所述第一凹槽10内的胶水固化，进一步加强了所述磁轭21与所述磁钢22的连接强度。同时溢出的胶水收容于所述第二凹槽20内，由于氧气的存在，所述第二凹槽20内的胶水不能固化，可通过其他工序去除，不影响所述振动系统2的振动空间。优选的，所述磁钢22在所述上表面2111的正投影的外边缘与所述第二凹槽20的内边缘重合，可以保证过量的胶水能够顺利溢出进入所述第二凹槽20，同时所述第一凹槽10和所述第二凹槽20之间的间隔为0.2-1mm，可以保证较好的密封效果，同时使所述第一凹槽10的横截面积较大，可以容纳更多的胶水。
更进一步的，所述第一凹槽10的深度小于所述第二凹槽20的深度，使得所述第二凹槽20可以容纳较多溢出的胶水。
所述第一凹槽10与所述磁钢22正对且呈矩形状，所述第二凹槽呈20闭合环状，且所述第二凹槽20对称绕设在所述第一凹槽10外周，使得所述磁轭21整体结构呈对称设置，不影响所述扬声器100整体的振动效果。
所述振动系统3用于振动发声，具体的，所述振动系统3包括与所述用于振动发声的振膜31、位于所述振膜31下方并用于驱动所述振膜31振动发声的音圈32以及由所述音圈32延伸的音圈引线33。所述振膜31夹设于所述上盖12与所述盆架11之间，所述音圈32悬置于所述磁间隙内。
所述导电端子4连接所述音圈引线33与外界电源，实现所述音圈32与外界电源的电连接。
所述钢片5与所述盆架11固定并覆盖所述通孔13，所述钢片5上开设有连通所述通孔13与外界的泄漏孔50。所述泄漏孔50破坏了所述内腔封闭，破坏了所述内腔共振条件，减弱了谐振，降低了失真，同时，所述泄漏孔50还可以平衡扬声器内部的气压，从而有效的提高扬声器的声学品质。
与相关技术相比，本实用新型提供的扬声器100中，在磁轭21的底壁211上设置容纳胶水的第一凹槽10，加大了胶合面积，提高了胶合稳定性，避免所述磁钢22的跌落，同时，所述胶水为厌氧胶，过量的胶水由所述第一凹槽10溢出，进入所述第二凹槽20，压合后，所述底壁211与所述磁钢22贴合，形成密封，所述第一凹槽10内的胶水固化，实现所述磁钢22与所述底壁211的连接，溢出的胶水收容于所述第二凹槽20内，不影响所述振动系统3的振动空间。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种扬声器，包括具有收容空间的壳体、收容于所述收容空间内的磁路系统及固持于所述壳体的振动系统，所述磁路系统包括与所述壳体固定连接的磁轭以及组配于所述磁轭的磁钢，所述磁轭包括与所述磁钢连接的底壁，其特征在于，所述底壁包括靠近所述振动系统的上表面及与所述上表面相对设置的下表面，所述上表面朝所述下表面方向凹陷形成有相互间隔设置的第一凹槽和第二凹槽，所述磁钢沿所述振动系统的振动方向在所述上表面的正投影完全覆盖所述第一凹槽，所述第二凹槽设置在所述正投影的范围之外，所述磁钢与所述底壁通过胶水胶合连接，所述胶水收容于所述第一凹槽内。
  2. 根据权利要求1所述的扬声器，其特征在于，所述磁轭还包括自所述底壁的相对两端向靠近所述振动系统方向弯折延伸的侧壁，所述侧壁与所述磁钢间隔设置，所述磁路系统还包括固定在所述磁钢远离所述上表面一侧的极芯。
  3. 根据权利要求1所述的扬声器，其特征在于，所述第一凹槽的深度小于所述第二凹槽的深度。
  4. 根据权利要求1所述的扬声器，其特征在于，所述第一凹槽与所述磁钢正对且呈矩形状，所述第二凹槽呈闭合环状，且所述第二凹槽对称绕设在所述第一凹槽外周。
  5. 根据权利要求4所述的扬声器，其特征在于，所述磁钢在所述上表面的正投影的外边缘与第二凹槽的内边缘重合。
  6. 根据权利要求5所述的扬声器，其特征在于，所述第一凹槽与所述第二凹槽之间的间隔为0.2-1mm。
  7. 根据权利要求1所述的扬声器，其特征在于，所述胶水为厌氧胶。
  8. 根据权利要求2所述的扬声器，其特征在于，所述振动系统包括与所述壳体固定连接并用于振动发生的振膜、位于振膜下方并驱动所述振膜振动的音圈以及自所述音圈延伸的音圈引线，所述磁钢与所述侧壁间隔形成磁间隙，所述音圈悬置于所述磁间隙内。
  9. 根据权利要求8所述的扬声器，其特征在于，所述扬声器还包括导电端子，所述导电端子连接所述音圈引线与外界电源，实现所述音圈与外界电源的电连接。
  10. 根据权利要求8所述的扬声器，其特征在于，所述振膜靠近所述磁路系统的一侧与所述壳体之间围成内腔，所述壳体贯穿开设有与所述内腔连通的通孔，所述扬声器还包括与所述壳体固定并覆盖所述通孔的钢片，所述钢片上开设有连通所述通孔与外界的泄漏孔。
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