WO2016086758A1 - 微型扬声器 - Google Patents

微型扬声器 Download PDF

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Publication number
WO2016086758A1
WO2016086758A1 PCT/CN2015/094261 CN2015094261W WO2016086758A1 WO 2016086758 A1 WO2016086758 A1 WO 2016086758A1 CN 2015094261 W CN2015094261 W CN 2015094261W WO 2016086758 A1 WO2016086758 A1 WO 2016086758A1
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WO
WIPO (PCT)
Prior art keywords
basin frame
short
axis side
magnetic circuit
sound hole
Prior art date
Application number
PCT/CN2015/094261
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English (en)
French (fr)
Inventor
葛连山
董文强
郭甜丽
Original Assignee
歌尔声学股份有限公司
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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 US15/532,066 priority Critical patent/US10104476B2/en
Publication of WO2016086758A1 publication Critical patent/WO2016086758A1/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
    • 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
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding 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
    • 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
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to the field of electroacoustics, and in particular to a microspeaker.
  • the basin frame and magnets, as well as the washers form a magnetic circuit system that affects the performance of micro-speaker products.
  • the sound hole is often disposed on the bottom plane of the product, it is necessary to press or open the basin frame to leave a space for the sound hole to be affixed to the air filter.
  • the basin frame is part of the magnetic circuit system, when it is crimped or opened, it will affect the magnetic guiding process of the product, resulting in a slight loss of product performance of the micro-speaker.
  • the technical problem to be solved by the present invention is to provide a micro-speaker, in which the position of the sound hole is redesigned while the components remain unchanged, and the sound hole is symmetrically arranged on the upright side of the side of the short-axis of the basin frame. It can reduce the loss of magnetic lines of force, ensure the magnetic properties of the product, and prevent the sound hole from being blocked when the whole machine is assembled.
  • a micro-speaker including a magnetic circuit system, a vibration system and a support system;
  • the magnetic circuit system includes a basin frame, a magnet housed in the basin frame, and a surface fixed to the magnet
  • the vibration system includes a voice coil and a diaphragm;
  • the support system includes a housing and a front cover coupled to the housing; the magnetic circuit system and the vibration system are housed in the housing a cavity formed by the front cover;
  • the basin frame includes a base extending in a horizontal direction and a side portion protruding in a vertical direction, wherein the long axis and the short axis corresponding to the base of the basin frame are symmetrically disposed respectively
  • the short-axis side portion of the basin frame is a rectangular structure formed by four upright sides; the bottom of the sound hole is located at an upper portion of the upright side edge of the inner side of the short-axis side of the basin frame; The upper portion of the hole is lower than the edge of the outer side of the short side of the short side of the basin; the two ends of the sound hole are located within the space formed by the two sides of the side portion of the short axis of the basin.
  • the basin frame and the sound hole are both rectangular.
  • the sound hole is covered with damping.
  • the intermediate position of the diaphragm is combined with a reinforcing portion; an inner edge of the diaphragm surrounds the outer circumference of the reinforcing portion.
  • the sound hole is arranged on the upright side of the side portion of the short shaft of the basin frame, and the magnetic line of the magnetic circuit system housed in the basin frame is not obviously lost, which can be better.
  • the magnetic performance of the micro-speaker products is guaranteed; in addition, when the micro-speakers are assembled with the terminal devices such as mobile phones and computers, the sound holes are not blocked, and the impact on the installation test curve of the products is avoided.
  • FIG. 1 is a perspective exploded view of a microspeaker according to the present invention.
  • FIG. 2 is a top plan view of a microspeaker according to the present invention.
  • Figure 3 is a bottom view of the microspeaker according to the present invention.
  • Figure 4 is a left side view of the short shaft of the microspeaker basin frame according to the present invention.
  • Figure 5 is a right side view of the short axis of the microspeaker basin frame according to the present invention.
  • Figure 6 is a perspective view showing the structure of a micro-speaker basin frame according to the present invention.
  • the reference numerals include: 1, basin frame, 2, magnet, 3, washer, 4, voice coil, 5, diaphragm, 6, reinforcement, 7, housing, 8, front cover, 9, sound hole , 10, damping, 11, magnetic circuit system, 12, vibration system System.
  • the micro-speaker of the present invention comprises a magnetic circuit system 11 , a vibration system 12 and a support system;
  • the magnetic circuit system 11 includes a basin frame 1 , a magnet 2 housed in the basin frame 1 and a surface fixed to the magnet 2 .
  • the vibration system 12 includes a voice coil 4 and a diaphragm 5;
  • the support system includes a housing 7 and a front cover 8 coupled to the housing 7, and the magnetic circuit system 11 and the vibration system 12 are received in the housing 7 and the front cover 8.
  • the basin frame 1 includes a base extending in a horizontal direction and a side portion protruding in a vertical direction; wherein, the long axis and the short axis of the base portion of the corresponding basin frame 1 are symmetrically disposed with two long axis sides and a short axis side, respectively a sound hole 9 is symmetrically disposed on the two short-axis side portions of the basin frame 1, and the outer casing 7 is provided with a relief structure corresponding to the position of the sound hole 9.
  • the position of the sound hole 9 is improved from the bottom plane of the product to the short-axis side of the basin frame 1 by the above technical solution, and on the one hand, the magnetic line loss of the magnetic circuit system 11 can be reduced, and the product is guaranteed. Performance; on the other hand, when the micro-speaker is assembled in the whole machine, the bottom plane of the product and the assembly plane are flush, the sound hole 9 is disposed on the short-axis side of the basin frame 1, and the avoidance structure is disposed at the position corresponding to the sound hole 9 of the outer casing 7. It can avoid blocking the sound hole 9 after the product is assembled, and ensure the effect of the installation test curve.
  • the components of the magnetic circuit system 11 are fixed together by adhesive bonding, wherein a certain distance is set between the magnet 2 and the basin frame 1 to form a magnetic gap, and the voice coil 4 is close to the magnetic circuit system 11 The end portion is suspended in the magnetic gap; on the other hand, the outer casing 7 is usually injection-molded with an electrical connection member, and the electrical connector is electrically connected to the lead of the voice coil 4 inside the micro-speaker, and externally connected to the external circuit.
  • the current signal of the external circuit can be transmitted to the voice coil 4 through the above electrical connection member, and after receiving the current signal, the voice coil 4 can perform the motion of reciprocating cutting magnetic lines under the force of the electromagnetic field, thereby driving and The vibration of the connected diaphragm 5 is obtained.
  • the short-axis side portion of the basin frame 1 is a rectangular structure formed by four upright sides; the bottom of the sound hole 9 is located at the upper portion of the inner side of the short-axis side of the short-axis side of the basin frame 1, and the upper portion of the sound hole 9 is low.
  • the edge of the outer side of the short side of the short side of the basin frame 1; the two ends of the sound hole 9 are located in the space formed by the two side sides of the short side of the basin frame 1.
  • the basin frame 1 and the sound hole 9 are both rectangular.
  • the sound hole 9 is covered with a damping 10 for adjusting acoustic performance and dustproof.
  • the intermediate portion of the diaphragm 5 is combined with the reinforcing portion 6; the inner edge of the diaphragm 5 surrounds the outer periphery of the reinforcing portion 6, and the reinforcing portion 6 is generally preferably a rigid composite layer structure, mainly used for reinforcement. The performance of the product at high frequencies.

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

Abstract

本发明公开了一种微型扬声器，包括磁路系统、振动系统和支撑系统；磁路系统包括盆架、收容于盆架内的磁铁和固定于磁铁表面的华司；振动系统包括音圈和振膜；支撑系统包括外壳和与外壳相结合的前盖；磁路系统和振动系统收容于外壳和前盖形成的空腔之内；盆架包括水平方向延伸的基部和沿垂直方向突出的侧部，对应盆架基部的长轴和短轴分别对称设置有两个长轴侧部和短轴侧部；盆架的两个短轴侧部上对称设置有声孔，外壳对应声孔的位置设置有避让结构。本发明的微型扬声器，声孔设置于盆架短轴侧部的直立边上，可以降低因盆架底部开孔对产品性能的损害，同时避免声孔整机装配时被堵住而影响装机测试曲线。

Description

微型扬声器 技术领域
本发明涉及电声领域，具体的涉及一种微型扬声器。
背景技术
在微型扬声器领域，盆架和磁铁以及华司共同构成了磁路系统，影响着微型扬声器产品的性能。而在现有的微型扬声器结构中，由于声孔往往设置于产品的底部平面上，因此，需要对盆架进行压边或者开孔，以留出空间为声孔粘贴防尘网。对于微型扬声器而言，由于盆架是磁路系统的一部分，当其进行压边或者开孔处理时，会对产品的导磁过程造成影响，使得微型扬声器的产品性能略有损失。此外，由于微型扬声器与终端进行整机装配时，需要保证产品的底部平面与整机装配面齐平，因此位于产品底部平面的声孔容易被堵住，从而影响装机测试曲线。
因此，有必要对现有的微型扬声器结构，特别是声孔的位置设计进行改进，尽量减少因盆架压边或开孔而导致的产品性能的损失，同时防止产品进行整机装配时因声孔被堵住而对装机测试曲线带来的影响。
发明内容
本发明所要解决的技术问题是：提供一种微型扬声器，在组成部分保持不变的情况下，着重对声孔的位置重新设计，在盆架短轴侧部的直立边上对称设置声孔，既可以减少对磁力线的损耗，保证产品的磁性能，同时可以防止声孔在整机装配时被堵住。
为了实现上述目的，本发明采用以下技术方案：一种微型扬声器，包括磁路系统、振动系统和支撑系统；所述磁路系统包括盆架、收容于盆架之内的磁铁和固定于磁铁表面的华司；所述振动系统包括音圈和振膜；所述支撑系统包括外壳和与外壳相结合的前盖；所述磁路系统和所述振动系统收容于所述外壳 和所述前盖形成的空腔之内；所述盆架包括水平方向延伸的基部和沿垂直方向突出的侧部，其特征在于：对应所述盆架基部的长轴和短轴分别对称设置有两个长轴侧部和短轴侧部；所述盆架的两个短轴侧部上对称设置有声孔；所述外壳对应所述声孔的位置设置有避让结构。
作为一种改进，所述盆架的短轴侧部为由四条直立边共同形成的矩形结构；所述声孔的底部位于所述盆架短轴侧部内侧直立边边线的上部；所述声孔的上部低于所述盆架短轴侧部外侧直立边的边线；所述声孔的两端位于所述盆架短轴侧部的两个侧边形成的空间之内。
作为一种改进，所述盆架和所述声孔均为矩形。
作为一种改进，所述声孔上覆盖有阻尼。
作为一种改进，所述振膜的中间位置结合有补强部；所述振膜的内边缘环绕于所述补强部的外周。
相较于现有技术，本发明中，在盆架短轴侧部的直立边上设置声孔，对收容于盆架之内的磁路系统的磁力线不会有明显的损耗，能够更好地保证微型扬声器产品的磁性能；另外，微型扬声器与手机、电脑等终端设备进行整机装配时，不会使声孔被堵住，避免对产品的装机测试曲线造成影响。
附图说明
图1为本发明涉及的微型扬声器的立体分解示意图；
图2为本发明涉及的微型扬声器的俯视图；
图3为本发明涉及的微型扬声器的仰视图；
图4为本发明涉及的微型扬声器盆架短轴的左视图；
图5为本发明涉及的微型扬声器盆架短轴的右视图；
图6为本发明涉及的微型扬声器盆架结构的立体图；
其中的附图标记包括：1、盆架，2、磁铁，3、华司，4、音圈，5、振膜，6、补强部，7、外壳，8、前盖，9、声孔，10、阻尼，11、磁路系统，12、振动系 统。
具体实施方式
下面结合附图，详细说明本发明内容：
实施例：
请参阅图1所示，本发明微型扬声器包括磁路系统11、振动系统12和支撑系统；磁路系统11包括盆架1、收容于盆架1之内的磁铁2和固定于磁铁2表面的华司3；振动系统12包括音圈4和振膜5；支撑系统包括外壳7和与外壳7相结合的前盖8，磁路系统11和振动系统12收容于外壳7和前盖8形成的空腔之内，盆架1包括水平方向延伸的基部和沿垂直方向突出的侧部；其中，对应盆架1基部的长轴和短轴分别对称设置有两个长轴侧部和短轴侧部；盆架1的两个短轴侧部上对称设置有声孔9，外壳7对应声孔9的位置设置有避让结构。
对于微型扬声器而言，通过上述技术方案，将声孔9的位置由产品底部平面改进为设置于盆架1的短轴侧部，一方面可以降低对磁路系统11磁力线的损耗，保证产品的性能；另一方面，微型扬声器进行整机装配时，产品底部平面和装配平面齐平，声孔9设置于盆架1的短轴侧部，并且在外壳7对应声孔9的位置设置避让结构，可以避免产品装配完毕后将声孔9堵住，保证装机测试曲线的效果。
具体实施时，磁路系统11的各部件之间通过涂胶粘结固定在一起，其中，磁铁2与盆架1之间设置一定的距离，形成磁间隙，而音圈4靠近磁路系统11的端部悬置于该磁间隙中；另一方面，外壳7上通常注塑结合有电连接件，电连接件在微型扬声器内部与音圈4的引线电性连接，同时向外连接外部电路，这样外部电路的电流信号便可以通过上述电连接件传递至音圈4，音圈4接收到电流信号后，可在电磁场的作用力下做往复切割磁力线的运动，从而带动与 之连接的振膜5的振动。
本实施过程中，盆架1的短轴侧部为由四条直立边共同形成的矩形结构；声孔9的底部位于盆架1短轴侧部内侧直立边边线的上部，声孔9的上部低于盆架1短轴侧部外侧直立边的边线；声孔9的两端位于盆架1短轴侧部的两个侧边形成的空间之内。
本实施过程中，盆架1和声孔9均为矩形。
另外，本实施过程中，声孔9上覆盖有阻尼10，用于调整声学性能，并且防尘。
本实施过程中，振膜5的中间位置结合有补强部6；振膜5的内边缘环绕于补强部6的外周，补强部6一般优选为刚性的复合层结构，主要用于增强产品在高频处的性能。
以上仅为本发明实施案例而已，并不用于限制本发明，但凡本领域普通技术人员根据本发明所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。

Claims (5)

  1. 一种微型扬声器，包括磁路系统、振动系统和支撑系统；所述磁路系统包括盆架、收容于盆架之内的磁铁和固定于磁铁表面的华司；所述振动系统包括音圈和振膜；所述支撑系统包括外壳和与外壳相结合的前盖；所述磁路系统和所述振动系统收容于所述外壳和所述前盖形成的空腔之内；所述盆架包括水平方向延伸的基部和沿垂直方向突出的侧部，其特征在于：对应所述盆架基部的长轴和短轴分别对称设置有两个长轴侧部和短轴侧部；所述盆架的两个短轴侧部上对称设置有声孔；所述外壳对应所述声孔的位置设置有避让结构。
  2. 根据权利要求1所述的微型扬声器，其特征在于：所述盆架的短轴侧部为由四条直立边共同形成的矩形结构；所述声孔的底部位于所述盆架短轴侧部内侧直立边边线的上部；所述声孔的上部低于所述盆架短轴侧部外侧直立边的边线；所述声孔的两端位于所述盆架短轴侧部的两个侧边形成的空间之内。
  3. 根据权利要求2所述的微型扬声器，其特征在于：所述盆架和所述声孔均为矩形。
  4. 根据权利要求2所述的微型扬声器，其特征在于：所述声孔上覆盖有阻尼。
  5. 根据权利要求1所述的微型扬声器，其特征在于：所述振膜的中间位置结合有补强部；所述振膜的内边缘环绕于所述补强部的外周。
PCT/CN2015/094261 2014-12-02 2015-11-11 微型扬声器 WO2016086758A1 (zh)

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Application Number Priority Date Filing Date Title
US15/532,066 US10104476B2 (en) 2014-12-02 2015-11-11 Miniature loudspeaker

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Application Number Priority Date Filing Date Title
CN201410724604.0 2014-12-02
CN201410724604.0A CN104410945A (zh) 2014-12-02 2014-12-02 微型扬声器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104410945A (zh) * 2014-12-02 2015-03-11 歌尔声学股份有限公司 微型扬声器
CN207612403U (zh) * 2017-11-02 2018-07-13 瑞声科技(新加坡)有限公司 扬声器箱
WO2021000156A1 (zh) * 2019-06-30 2021-01-07 瑞声声学科技(深圳)有限公司 发声器件
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