WO2016176996A1 - 扬声器模组 - Google Patents

扬声器模组 Download PDF

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Publication number
WO2016176996A1
WO2016176996A1 PCT/CN2015/096963 CN2015096963W WO2016176996A1 WO 2016176996 A1 WO2016176996 A1 WO 2016176996A1 CN 2015096963 W CN2015096963 W CN 2015096963W WO 2016176996 A1 WO2016176996 A1 WO 2016176996A1
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WO
WIPO (PCT)
Prior art keywords
housing
cavity
diaphragm
speaker module
fixed
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PCT/CN2015/096963
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English (en)
French (fr)
Inventor
王景伟
石华
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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
Publication of WO2016176996A1 publication Critical patent/WO2016176996A1/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
    • H04R9/02—Details
    • 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 utility model relates to the technical field of loudspeakers, and more particularly to a loudspeaker module.
  • the speaker module is an important acoustic component in portable electronic devices for converting between electrical signals and sound signals, and is an energy conversion device.
  • the speaker module includes a rear sound chamber, and the rear sound chamber is a sealed cavity.
  • the rear sound chamber is completely sealed, it will affect the diaphragm vibration of the speaker unit, affecting the acoustic performance of the speaker unit, and the heat generated by the speaker unit cannot be generated.
  • the temperature inside the sound chamber will rise sharply in a short time, causing the voice coil to break. Therefore, a small damping hole is usually designed on the back of the module's outer casing to connect the rear sound chamber to the outside of the module for heat dissipation and The airflow inside and outside the sound chamber circulates to balance the sound pressure.
  • an object of the present invention is to provide a speaker module to solve the problem that the damping hole of the rear sound cavity is easily blocked by the outer casing of the mobile phone.
  • the speaker module provided by the utility model comprises a casing and a speaker unit housed in a cavity enclosed by the casing, and the speaker unit separates the cavity enclosed by the casing into a front sound cavity and a rear sound cavity; wherein, the side wall of the casing A damping hole for connecting the rear sound chamber to the outside is provided.
  • the outer casing includes a first housing and a second housing that are coupled together, and a space formed between the first housing and the speaker unit is a front acoustic chamber, and the first housing and the second housing In the enclosed cavity, the space occupied by the front acoustic cavity is removed, and the other space is the rear acoustic cavity, and the damping hole is disposed on the sidewall of the first casing.
  • a steel sheet is provided at a position where the first housing and/or the second housing correspond to the speaker unit.
  • a preferred structure is that the opening of the orifice is covered with a damping net.
  • a preferred structure is that an acoustic hole for connecting the front acoustic cavity to the outside is provided on the outer casing, and an air filter is covered at the opening of the sound emitting hole.
  • the speaker unit includes an auxiliary system including a front cover and a rear cover, the vibration system and the magnetic circuit system are housed in the front cover and the rear case, the auxiliary system, the vibration system, and the magnetic circuit system. Enclosed in the cavity.
  • the vibration system includes a diaphragm and a voice coil fixed to one side of the diaphragm and a reinforcing portion fixed to a center of the diaphragm; the voice coil and the reinforcing portion are fixed to the same side of the diaphragm or respectively fixed to Both sides of the diaphragm; the diaphragm includes a central region fixed to the reinforcing portion and a folded portion disposed at an edge of the central portion, and the folded portion is a convex or concave structure.
  • the magnetic circuit system includes a magnetic yoke and a central magnet fixed to the magnetic yoke, and a center washer is fixed on the central magnet, and both ends of the magnetic yoke have a convex structure, a central magnet,
  • the integral structure of the center washer and the gap between the convex structures at both ends of the yoke form a magnetic gap, and the voice coil is disposed in the magnetic gap.
  • the damping hole connecting the rear sound chamber and the outside is disposed on the side wall of the speaker module housing, so as to prevent the damping hole from closely fitting with the outer casing of the mobile phone, so that the damping hole balances the sound pressure, The role of heat dissipation.
  • FIG. 1 is a schematic perspective view of a speaker module according to an embodiment of the present invention.
  • FIG. 2 is a schematic exploded view of a speaker module according to an embodiment of the present invention.
  • Figure 3 is a front elevational view of Figure 1;
  • Figure 4 is a rear elevational view of Figure 1;
  • Figure 5 is a plan view of Figure 1;
  • Figure 6 is a cross-sectional view taken along line A-A of Figure 5.
  • the reference numerals include: outer casing 1, first casing 2, second casing 3, fixing portion 4, speaker unit 5, front cover 6, rear casing 7, diaphragm 8, voice coil 9, reinforcing portion 10.
  • the damping hole of the rear sound cavity is opened on the side wall of the outer casing of the speaker module, so that the outer casing of the mobile phone cannot contact the damping hole.
  • 1 to 5 respectively show three-dimensional views of a three-dimensional structure, an exploded structure, and a three-dimensional structure of a speaker module according to an embodiment of the present invention.
  • the speaker module provided by the present invention comprises a housing 1 and a speaker unit 5.
  • the housing 1 includes a first housing 2 and a second housing 3.
  • the first housing 2 includes four
  • the second housing 3 is fastened to the first housing 2 to form a cavity, and the speaker unit 5 is received and fixed in the cavity defined by the first housing 2 and the second housing 3.
  • the sound chamber 17 is defined in the rear side of the first housing 2, and the sound hole 18 is formed on the side wall or the top of the first housing 2 for communicating the front sound chamber 16 with the outside.
  • the hole 15 is configured to communicate the rear acoustic cavity 17 with the outside.
  • the orifice 15 is a gas leak
  • the damping hole 15 is opened on the side wall of the first casing 2, and corresponds to the position of the rear acoustic cavity 17, that is, the damping hole 17 is opened on the side of the first casing 2.
  • the wall is formed at any position of the portion of the sound chamber 17 and thus the outside of the mobile phone
  • the shell is separated from the orifice 15 so that the two are at different horizontal planes. No matter how tightly the mobile phone casing and the speaker module are vertically arranged, the casing of the mobile phone does not affect the heat dissipation of the orifice 15 and balance the sound pressure.
  • a damping net is covered at the opening of the orifice 15 and the damping web is affixed with damping.
  • the first housing 2 has a fixing portion 4, and the speaker unit 5 is fixed to the first housing 2 through the fixing portion 4.
  • the sound hole 18 is opened at a position on the side wall or the top of the first housing 2 corresponding to the front sound chamber 16.
  • the sound hole 18 connects the front sound chamber 16 to the outside.
  • an air filter is covered at the opening of the sound hole 18.
  • Figure 6 is a cross-sectional view taken along line A-A of Figure 5, showing the specific structure of the speaker unit 5.
  • the speaker unit 5 includes an auxiliary system including a front cover 6 and a rear case 7, and a vibration system and a magnetic circuit system housed in the front cover 6 and the rear case, the vibration system and the magnetic circuit system. 7 surrounded by the cavity.
  • the vibration system includes a diaphragm 8, a voice coil 9 and a reinforcing portion 10, and the voice coil 9 is fixed to a side of the diaphragm 8 facing the second housing 3, and the reinforcing portion 10 can be fixed to the second surface of the diaphragm 8 One side of the housing 3 can be fixed to the side of the diaphragm 8 facing away from the second housing 3.
  • the diaphragm 8 includes a central portion fixed to the reinforcing portion 10 and a folded portion 11 disposed at the edge of the central portion.
  • the ring portion 11 is a convex or concave structure; and the space between the diaphragm 8 and the first casing 2 forms a front acoustic cavity 16, which is removed in a cavity surrounded by the first casing 2 and the second casing 3.
  • the space occupied by the front acoustic cavity 16 and the other spaces are the rear acoustic cavity 17, in other words, the space surrounded by the first casing 2, the second casing 3 and the diaphragm 8 forms the rear acoustic cavity 17.
  • the diaphragm 8 separates the cavity of the first housing 2 and the second housing 3 from the front acoustic chamber 16 and the rear acoustic chamber 17.
  • the magnetic circuit system includes a magnetic yoke 12 and a central magnet 13 fixed to the magnetic yoke 12, and a center washer 14 is fixed on the central magnet.
  • the two ends of the magnetic yoke 12 have a convex structure, the central magnet 13, and the central
  • the integral structure of the main body 14 and the gap between the convex structures at both ends of the yoke yoke 12 form a magnetic gap, and the voice coil 9 is disposed in the magnetic gap.
  • the magnetic circuit system is a single magnetic circuit structure. If the magnetic circuit system is a double magnetic circuit structure, the convex structure at both ends of the magnetic yoke 12 is replaced with a side magnet and a side slab, and the side magnet is fixed on the yoke 12, Located on both sides of the center magnet 13, and the edge is fixed on the side magnet, in the middle The integral structure of the core magnet 13 and the center washer 14 forms a magnetic gap with the gap between the side magnet and the integral structure of the edge washer, and the voice coil 8 is disposed in the magnetic gap.
  • a steel sheet is disposed at a position corresponding to the speaker unit 5 of the first housing 2 and/or the second housing 3, and the steel sheet can ensure the rigidity of the housing 1 and can be reduced.
  • the thickness of the outer casing 1 increases the space of the cavity enclosed by the outer casing 1 and improves the acoustic performance of the speaker module.
  • the above content details the structure of the speaker module provided by the present invention.
  • the damping hole that communicates the rear acoustic cavity with the outside is disposed on the side wall of the speaker module housing to avoid damping.
  • the hole is closely attached to the outer casing of the mobile phone, so that the damping hole balances the sound pressure and heat dissipation.

Abstract

本实用新型提供一种扬声器模组，包括：外壳和收容于外壳围成的腔体内的扬声器单体，扬声器单体将外壳围成的腔体分隔成前声腔和后声腔；其中，在外壳的侧壁上设置有用于连通后声腔与外界的阻尼孔。利用上述本实用新型提供的扬声器模组，将后声腔与外界连通的阻尼孔设置在扬声器模组外壳的侧壁上，避免阻尼孔与手机外壳紧密贴合，使阻尼孔起到平衡声压、散热的作用。

Description

扬声器模组 技术领域
本实用新型涉及扬声器技术领域，更为具体地，涉及一种扬声器模组。
背景技术
扬声器模组是便携式电子设备中的重要声学部件，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。扬声器模组包括后声腔，后声腔为密封的腔体，但是，若后声腔完全密封将会影响扬声器单体的振膜振动，对扬声器单体声学性能产生影响，同时扬声器单体产生的热量无法散发出去，后声腔内温度会在短时间内急剧上升，造成音圈断线，故通常会在模组的外壳的背面设计一个小的阻尼孔来连通后声腔与模组外界，用于散热和后声腔内外的气流流通，平衡声压。
随着科技的进步和社会的发展，电声产品越做越薄，在其竖向方向上，部件贴合会越来越紧密，导致阻尼孔与手机外壳紧密贴合，而失去平衡声压、散热的作用。
实用新型内容
鉴于上述问题，本实用新型的目的是提供一种扬声器模组，以解决后声腔的阻尼孔易被手机外壳堵住的问题。
本实用新型提供的扬声器模组，包括外壳和收容于外壳围成的腔体内的扬声器单体，扬声器单体将外壳围成的腔体分隔成前声腔和后声腔；其中，在外壳的侧壁上设置有用于连通后声腔与外界的阻尼孔。
此外，优选的结构是，外壳包括结合在一起的第一壳体和第二壳体，第一壳体与扬声器单体之间形成的空间为前声腔，在第一壳体与第二壳体围成的腔体内，去除前声腔所占的空间，其它空间为后声腔，阻尼孔设置在第一壳体的侧壁上。
此外，优选的结构是，在第一壳体和/或第二壳体对应扬声器单体的位置设置有钢片。
另外，优选的结构是，在阻尼孔的开口处覆盖有阻尼网。
再者，优选的结构是，在外壳上设置有将前声腔与外界连通的出声孔，在出声孔的开孔处覆盖有防尘网。
此外，优选的结构是，扬声器单体包括辅助系统、振动系统和磁路系统，所述辅助系统包括结合在一起的前盖和后壳，振动系统和磁路系统收容于前盖和后壳所围成的腔体内。
另外，优选的结构是，振动系统包括振膜和固定于振膜一侧的音圈及固定于振膜中心位置的补强部；音圈与补强部固定于振膜同侧或分别固定于振膜的两侧；振膜包括与补强部固定的中心区域以及设置于中心区域边缘的折环部，折环部为凸起或凹陷结构。
再者，优选的结构是，磁路系统包括导磁轭和固定于导磁轭上的中心磁铁，在中心磁铁上固定有中心华司，导磁轭的两端具有凸起结构，中心磁铁、中心华司的一体结构与导磁轭两端的凸起结构之间的空隙形成磁间隙，音圈设置在磁间隙中。
利用上述本实用新型提供的扬声器模组，将后声腔与外界连通的阻尼孔设置在扬声器模组外壳的侧壁上，避免阻尼孔与手机外壳紧密贴合，使阻尼孔起到平衡声压、散热的作用。
附图说明
通过参考以下结合附图的说明及权利要求书的内容，并且随着对本实用新型的更全面理解，本实用新型的其它目的及结果将更加明白及易于理解。在附图中：
图1为根据本实用新型实施例的扬声器模组的立体结构示意图；
图2为根据本实用新型实施例的扬声器模组的分解结构示意图；
图3为图1的主视图；
图4为图1的后视图；
图5为图1的俯视图；
图6为图5沿A-A线的剖面图。
其中的附图标记包括：外壳1、第一壳体2、第二壳体3、固定部4、扬声器单体5、前盖6、后壳7、振膜8、音圈9、补强部10、折环部11、导磁轭12、中心磁铁13、中心华司14、阻尼孔15、前声腔16、后声腔17、出声孔18。
在所有附图中相同的标号指示相似或相应的特征或功能。
具体实施方式
以下将结合附图对本实用新型的具体实施例进行详细描述。
为了解决后声腔的阻尼孔容易被手机外壳堵住的问题，本实用新型将后声腔的阻尼孔开设在扬声器模组外壳的侧壁上，使手机外壳无法接触到阻尼孔。
图1-图5分别示出了根据本实用新型实施例的扬声器模组的立体结构、分解结构以及立体结构的三个方向的视图。
如图1-图5所示，本实用新型提供的扬声器模组，包括外壳1和扬声器单体5，外壳1包括第一壳体2和第二壳体3，第一壳体2包括四个侧壁，第二壳体3扣合在第一壳体2上围成一个腔体，扬声器单体5收容固定在第一壳体2与第二壳体3围成的腔体内，扬声器单体5将外壳1围成的腔体分隔成两个声腔，其中，第一壳体2和扬声器单体5围成前声腔16，第二壳体3与扬声器单体5和第一壳体2一起围成后声腔17，在第一壳体2上的侧壁或顶部上开设有出声孔18，用于将前声腔16与外界连通，在第一壳体2的侧壁上还开设有阻尼孔15，用于将后声腔17与外界连通，在阻尼孔15起到气体泄漏的前提下，其越小越好；当后声腔17体积较小时，需增大阻尼孔15的声阻来减小阻尼孔15对声学性能的影响。
为了防止手机外壳堵住阻尼孔15，将阻尼孔15开设在第一壳体2的侧壁上，并且对应后声腔17的位置，也就是说，阻尼孔17开设在第一壳体2的侧壁形成后声腔17部分的任意位置，由此将手机外 壳与阻尼孔15分开，使两者处于不同的水平面上，无论手机外壳与扬声器模组在竖向上如何紧密设置，手机外壳都不会影响到阻尼孔15的散热、平衡声压的功能。
作为优选地实施方式，在阻尼孔15的开口处覆盖有阻尼网，阻尼网上贴有阻尼。
第一壳体2具有固定部4，扬声器单体5通过固定部4与第一壳体2固定，在第一壳体2的侧壁或顶部上对应前声腔16的位置开设有出声孔18，出声孔18将前声腔16与外界连通。
为了防止出声孔18进灰，在出声孔18的开孔处覆盖有防尘网。
图6为图5沿A-A线的剖面图，示出了扬声器单体5的具体结构。
如图6所示，扬声器单体5包括辅助系统、振动系统和磁路系统，辅助系统包括结合在一起的前盖6和后壳7，振动系统和磁路系统收容在前盖6和后壳7所围成的腔体内。
振动系统包括振膜8、音圈9和补强部10，音圈9固定在振膜8的面向第二壳体3的一侧，补强部10既可以固定在振膜8的面向第二壳体3的一侧又可以固定在振膜8背向第二壳体3的一侧，振膜8包括与补强部10固定的中心区域以及设置于中心区域边缘的折环部11，折环部11为凸起或凹陷结构；并且，振膜8与第一壳体2之间的空间形成前声腔16，在第一壳体2和第二壳体3所围成的腔体内，除去前声腔16的所占的空间，其它空间均为后声腔17，换言之，第一壳体2、第二壳体3与振膜8围成的空间形成后声腔17。综上所述，振膜8将第一壳体2和第二壳体3所围成的腔体分隔前声腔16和后声腔17。
磁路系统包括导磁轭12和固定于导磁轭12上的中心磁铁13，在中心磁铁上固定有中心华司14，导磁轭12的两端具有凸起结构，中心磁铁13、中心华司14的一体结构与导磁轭12两端的凸起结构之间的空隙形成磁间隙，音圈9设置在磁间隙中。
上述磁路系统为单磁路结构，如果磁路系统为双磁路结构，则将导磁轭12两端的凸起结构替换成边磁铁和边华司，边磁铁固定在导磁轭12上，位于中心磁铁13的两侧，而边华司固定在边磁铁上，中 心磁铁13、中心华司14的一体结构与边磁铁与边华司的一体结构之间的空隙形成磁间隙，音圈8设置在磁间隙中。
为了增大扬声器模组的腔体体积，在第一壳体2和/或第二壳体3对应扬声器单体5的位置设置有钢片，钢片既能保证外壳1的刚性，又能降低外壳1的厚度，从而增加外壳1围成的腔体的空间，提高扬声器模组的声学性能。
以上内容，详细说明了本实用新型提供的扬声器模组的结构，利用上述本实用新型提供的扬声器模组，将后声腔与外界连通的阻尼孔设置在扬声器模组外壳的侧壁上，避免阻尼孔与手机外壳紧密贴合，使阻尼孔起到平衡声压、散热的作用。
以上所述，仅为本实用新型的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应所述以权利要求的保护范围为准。

Claims (8)

  1. 一种扬声器模组，包括外壳和收容于所述外壳围成的腔体内的扬声器单体，所述扬声器单体将所述外壳围成的腔体分隔成前声腔和后声腔；其特征在于，在所述外壳的侧壁上设置有用于连通所述后声腔与外界的阻尼孔。
  2. 如权利要求1所述的扬声器模组，其特征在于，
    所述外壳包括结合在一起的第一壳体和第二壳体，所述第一壳体与所述扬声器单体之间形成的空间为前声腔，在所述第一壳体与所述第二壳体围成的腔体内，去除所述前声腔所占的空间，其它空间为后声腔，所述阻尼孔设置在所述第一壳体的侧壁上。
  3. 如权利要求2所述的扬声器模组，其特征在于，
    在所述第一壳体和/或所述第二壳体对应所述扬声器单体的位置设置有钢片。
  4. 如权利要求1所述的扬声器模组，其特征在于，
    在所述阻尼孔的开口处覆盖有阻尼网。
  5. 如权利要求1所述的扬声器模组，其特征在于，
    在所述外壳上设置有将所述前声腔与外界连通的出声孔，在所述出声孔的开孔处覆盖有防尘网。
  6. 如权利要求1所述的扬声器模组，其特征在于，
    所述扬声器单体包括辅助系统、振动系统和磁路系统，所述辅助系统包括结合在一起的前盖和后壳，所述振动系统和所述磁路系统收容于所述前盖和所述后壳所围成的腔体内。
  7. 如权利要求6所述的扬声器模组，其特征在于，
    所述振动系统包括振膜和固定于所述振膜一侧的音圈及固定于所述振膜中心位置的补强部；
    所述音圈与所述补强部固定于所述振膜同侧或分别固定于所述振膜的两侧；
    所述振膜包括与所述补强部固定的中心区域以及设置于所述中心区域边缘的折环部，所述折环部为凸起或凹陷结构。
  8. 如权利要求7所述的扬声器模组，其特征在于，
    所述磁路系统包括导磁轭和固定于所述导磁轭上的中心磁铁，在所述中心磁铁上固定有中心华司，所述导磁轭的两端具有凸起结构，所述中心磁铁、中心华司的一体结构与所述导磁轭两端的凸起结构之间的空隙形成磁间隙，所述音圈设置在所述磁间隙中。
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