WO2021134204A1 - 扬声器结构及应用该扬声器结构的电子设备 - Google Patents

扬声器结构及应用该扬声器结构的电子设备 Download PDF

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Publication number
WO2021134204A1
WO2021134204A1 PCT/CN2019/129901 CN2019129901W WO2021134204A1 WO 2021134204 A1 WO2021134204 A1 WO 2021134204A1 CN 2019129901 W CN2019129901 W CN 2019129901W WO 2021134204 A1 WO2021134204 A1 WO 2021134204A1
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WIPO (PCT)
Prior art keywords
front cavity
diaphragm
cover
cavity wall
speaker
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PCT/CN2019/129901
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English (en)
French (fr)
Inventor
刘忠原
魏威
蔡斌
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
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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
Priority to PCT/CN2019/129901 priority Critical patent/WO2021134204A1/zh
Publication of WO2021134204A1 publication Critical patent/WO2021134204A1/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
    • 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 belongs to the technical field of sound generating devices, and particularly relates to a speaker structure and electronic equipment using the speaker structure.
  • the speaker structure is an important acoustic component. It usually includes a housing with a housing space and a speaker unit contained in the housing space.
  • the diaphragm of the speaker unit and one side of the housing form a front cavity.
  • a sound hole communicating with the front cavity is opened on the upper side.
  • the space reserved for the speaker structure is not large, so the volume of the front cavity needs to be reduced to save space, but the diaphragm needs to vibrate when the speaker structure is working, and the reduction in the volume of the front cavity reduces the vibration of the diaphragm
  • space when the vibration amplitude of the diaphragm is too large, it is easy to hit the inner wall of the front cavity to produce noise, which affects the sound quality and service life of the speaker structure.
  • the purpose of the utility model is to provide a loudspeaker structure and electronic equipment using the loudspeaker structure, which can suppress the vibration amplitude and protect the loudspeaker structure, thereby improving the sound quality and service life of the loudspeaker structure.
  • a speaker structure which includes a first cover body, a second cover body that is enclosed with the first cover body to form an accommodating space, and a speaker unit accommodated in the accommodating space.
  • One side of the speaker unit has a diaphragm, the diaphragm and the first cover form a front cavity, and one side of the first cover is provided with a sound hole communicating with the front cavity.
  • the first cover has a front cavity wall directly opposite to the diaphragm, and the speaker structure further includes a soft support arranged on the front cavity wall close to the diaphragm.
  • the diaphragm includes a dome in the middle, and the projection of the soft support in a direction perpendicular to the dome at least partially coincides with the dome.
  • the soft supports are provided at the two corners of the front cavity wall and the dome away from the sound hole directly opposite to each other.
  • the soft support is provided at the four corners of the front cavity wall and the dome directly opposite to each other.
  • the soft support is made of foam or sound-absorbing cotton.
  • the first cover includes a main body connected with the second cover and a front cavity steel sheet fixed on the main body facing the diaphragm, and the main body is directly facing the diaphragm. An opening is opened at the diaphragm, and the front cavity steel sheet covers the opening.
  • the side of the main body portion away from the speaker unit is recessed toward the direction of the speaker unit to form an assembly groove surrounding the opening
  • the front cavity wall is a part of the front cavity steel sheet covering the opening
  • the front cavity steel sheet further includes an assembling edge formed by bending and extending from the periphery of the front cavity wall toward the assembling groove and matching the assembling groove, and the assembling edge is fixed in the assembling groove.
  • the sound hole is opened on one side of the main body, and the speaker structure further includes a mesh plate covering the sound hole and away from the front cavity end.
  • an electronic device which includes the speaker structure as described in any one of the above.
  • the soft support set on the front cavity wall can suppress the vibration of the diaphragm when the vibration amplitude of the diaphragm toward the front cavity wall is too large, so as to prevent the diaphragm from hitting the front cavity wall, and the soft support has an abnormally large amplitude on the diaphragm It can play a buffering role at times to avoid noise.
  • the speaker structure of this solution can suppress the vibration amplitude and protect the speaker structure, thereby improving the sound quality and service life of the speaker structure.
  • Figure 1 is a schematic diagram of the overall structure of the speaker structure of the utility model
  • Fig. 2 is a schematic cross-sectional view of the speaker structure in Fig. 1 along the A-A direction;
  • Figure 3 is a schematic diagram of a three-dimensional exploded structure of the speaker structure of the present invention.
  • FIG. 4 is a schematic diagram of the relative position of the projection of the soft support in the direction perpendicular to the top of the sphere in the present invention.
  • an electronic device including a speaker structure, wherein, as shown in FIGS. 1-4, the speaker structure includes a first cover 1, a second cover 2 that is enclosed with the first cover 1 to form a storage space, and is accommodated in the storage space Inside the speaker unit 3, one side of the speaker unit 3 has a diaphragm 31.
  • the diaphragm 31 and the first cover 1 surround the front cavity 001.
  • One side of the first cover 1 is provided with an outlet communicating with the front cavity 001.
  • the first cover 1 has a front cavity wall 121 directly opposite to the diaphragm 31, and the speaker structure further includes a soft support 4 disposed on the front cavity wall 121 on the side close to the diaphragm 31.
  • the soft support 4 provided on the front cavity wall 121 can suppress the amplitude of the diaphragm 31 when the vibration amplitude of the diaphragm 31 toward the front cavity wall 121 is too large, and prevent the diaphragm 31 from hitting the front cavity wall 121, and the soft support 4 When the amplitude of the diaphragm 31 is abnormally large, it can play a buffering effect to avoid noise.
  • the speaker structure of this solution can suppress the amplitude of the diaphragm 31 and protect the speaker structure, thereby improving the sound quality and service life of the speaker structure.
  • the first cover 1 includes a main body portion 11 connected to the second cover body 2 and a front cavity steel sheet 12 fixed to the main body portion 11 facing the diaphragm 31.
  • the main body portion 11 is directly opposed to the diaphragm 31.
  • the diaphragm 31 is provided with an opening 114 covered by the front cavity steel sheet 12, and the front cavity wall 121 is the part of the front cavity steel sheet 12 that covers the opening 114, that is, the soft support 4 is arranged on the front cavity steel sheet 12 close to the diaphragm
  • the soft support 4 can suppress the amplitude of the diaphragm 31 and buffer the diaphragm 31, thereby preventing the diaphragm 31 from hitting the front cavity steel sheet 12 and making noise.
  • the first cover 1 includes a main body 11 connected to the second cover 2 and a front cavity steel sheet 12 fixed on the main body 11 facing the diaphragm 31.
  • the main body 11 has a side away from the speaker unit 3 toward the speaker
  • the direction of the monomer 3 is recessed to form an assembly groove 113 surrounding the opening 114.
  • the front cavity wall 121 is the middle part of the front cavity steel sheet 12 facing the diaphragm 31.
  • the front cavity steel sheet 12 also includes the assembly from the periphery of the front cavity wall 121.
  • the groove 113 is bent and extended to form an assembling edge 122 matching the assembling groove 113, and the assembling edge 122 is fixed in the assembling groove 113.
  • the assembling edge 122 and the main body 11 are injection molded into one body, so that the assembling edge 122 and the body 11 are tightly connected.
  • the assembling edge 122 may be embedded in the assembling groove 113. It is fixed to the bottom of the assembly groove 113 by screws, and the assembly edge 122 can be fixed to the bottom of the assembly groove 113 by bonding, welding, etc.
  • the arrangement of the assembly groove 113 can facilitate the positioning of the front cavity steel sheet 12 while ensuring the front cavity steel sheet 12 The firmness of the connection with the main body 11.
  • the diaphragm 31 includes a dome 311 in the middle, and the projection of the soft support 4 in a direction perpendicular to the dome 311 at least partially overlaps the dome 311.
  • soft supports 4 may be provided at the two corners of the front cavity wall 121 and the dome 311 away from the sound hole 111 directly opposite to each other, or on the front cavity wall 121
  • the four corners of the dome 311 are all provided with soft supports 4, and the soft supports 4 can be fixedly connected to the front cavity wall 121 by screws.
  • the soft support 4 can be arranged on the front cavity wall 121 directly opposite the edge of the dome 311, and the specific number and edge position can be adjusted according to the actual situation.
  • One, two or three soft supports 4 are evenly arranged on the top 311 far from the edge of the sound hole 111, or even on the four edges of the front cavity wall 121 and the dome 311.
  • One, two or three soft supports 4 are provided.
  • the soft support 4 uses foam or sound-absorbing cotton.
  • the thickness of the foam can be within 0.1mm-0.4mm, preferably 0.2mm, and its thickness can be specifically set according to the actual situation, such as 0.15mm, 0.25mm, 0.30mm, 0.35mm, etc.; the thickness of the sound-absorbing cotton can be within 0.15mm- Within 0.5mm, preferably 0.35mm, the thickness can be specifically set according to actual conditions, such as 0.20mm, 0.25mm, 0.30mm, 0.40mm, 0.45mm, etc.
  • the sound hole 111 is opened on one side of the main body 11, the speaker structure further includes a net plate covering the sound hole 111 away from the end of the front cavity 001, the sound hole 111 is provided with a support plate 112, the second cover 2 and the speaker
  • the single body 3 encloses to form a rear cavity 002.
  • the second cover 2 includes a cover 21 matingly connected with the main body 11 and a rear cavity steel sheet 22 that is integrally molded with the cover 21; the speaker structure also includes the main body 11 is an integral reinforcement sheet 6 by injection molding, thereby improving the strength of the first cover 1.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本实用新型提供了扬声器结构及应用该扬声器结构的电子设备。提供一种电子设备，包括扬声器结构，其中，扬声器结构包括第一盖体、与第一盖体合围形成收容空间的第二盖体及收容于收容空间内的扬声器单体，扬声器单体的一侧具有振膜，振膜与第一盖体合围形成前腔，第一盖体的一侧开设与前腔连通的出声孔，第一盖体具有与振膜正对的前腔壁，扬声器结构还包括设置于前腔壁的靠近振膜侧的软质支撑物。在前腔壁设置的软质支撑物可以抑制振膜的振幅，避免振膜撞击前腔壁，且软质支撑物在振膜振幅异常过大时能起到缓冲作用，避免杂音出现，本方案的扬声器结构能够起到抑制振膜振幅及保护扬声器结构的作用，从而提高扬声器结构的音质及使用寿命。

Description

扬声器结构及应用该扬声器结构的电子设备 技术领域
本实用新型属于发声器件技术领域，尤其涉及扬声器结构及应用该扬声器结构的电子设备。
 背景技术
扬声器结构是一种重要的声学部件，其通常包括具有收容空间的壳体以及收容于收容空间内的扬声器单体，扬声器单体的振膜与壳体的一侧围合形成前腔，壳体上开设与前腔连通的出声孔。在一些产品中给扬声器结构预留的空间并不大，因此需要减小前腔的体积以节约空间，但扬声器结构工作时振膜需要振动，前腔体积减小后减小了振膜的振动空间，当振膜的振动幅度过大时容易撞击到前腔的内壁而产生杂声，影响了扬声器结构的音质及使用寿命。
 技术问题
本实用新型的目的在于提供一种扬声器结构及应用该扬声器结构的电子设备，能够起到抑制振膜振幅及保护扬声器结构的作用，从而提高扬声器结构的音质及使用寿命。
 技术解决方案
本实用新型的技术方案如下：提供一种扬声器结构，包括第一盖体、与所述第一盖体合围形成收容空间的第二盖体及收容于所述收容空间内的扬声器单体，所述扬声器单体的一侧具有振膜，所述振膜与所述第一盖体合围形成前腔，所述第一盖体的一侧开设与所述前腔连通的出声孔，所述第一盖体具有与所述振膜正对的前腔壁，所述扬声器结构还包括设置于所述前腔壁的靠近所述振膜侧的软质支撑物。
进一步地，所述振膜包括位于中部的球顶，所述软质支撑物在垂直于所述球顶的方向的投影至少部分与所述球顶重合。
进一步地，所述前腔壁的与所述球顶远离所述出声孔的两角正对处均设置所述软质支撑物。
进一步地，所述前腔壁的与所述球顶的四个角正对处均设置所述软质支撑物。
进一步地，所述软质支撑物采用泡棉或吸声棉。
进一步地，所述第一盖体包括与所述第二盖体相连的主体部及固定于所述主体部的正对所述振膜处的前腔钢片，所述主体部的正对所述振膜处开设开口，所述前腔钢片覆盖所述开口。
进一步地，所述主体部的远离所述扬声器单体侧朝靠近所述扬声器单体的方向凹陷形成环绕所述开口的装配槽，所述前腔壁为所述前腔钢片覆盖开口的部分，所述前腔钢片还包括自所述前腔壁的周缘朝所述装配槽弯曲延伸形成的与所述装配槽匹配的装配边沿，所述装配边沿固定于所述装配槽内。
进一步地，所述出声孔开设于所述主体部的一侧，所述扬声器结构还包括盖设于所述出声孔的远离所述前腔端的网板。
进一步地，提供一种电子设备，包括如上任意一种所述的扬声器结构。
 有益效果
本实用新型的有益效果在于：
在前腔壁设置的软质支撑物可以在振膜朝前腔壁振动的振幅过大时抑制振膜的振幅，避免振膜撞击前腔壁，且软质支撑物在振膜振幅异常过大时能起到缓冲作用，避免杂音出现，本方案的扬声器结构能够起到抑制振膜振幅及保护扬声器结构的作用，从而提高扬声器结构的音质及使用寿命。
 附图说明
图1为本实用新型扬声器结构的整体结构示意图；
图2为图1中扬声器结构沿A-A方向的剖面示意图；
图3为本实用新型扬声器结构的立体分解结构示意图；
图4为本实用新型中软质支撑物在垂直于球顶的方向的投影的相对位置示意图。
 本发明的实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
提供一种电子设备，包括扬声器结构，其中，如图1-4所示，扬声器结构包括第一盖体1、与第一盖体1合围形成收容空间的第二盖体2及收容于收容空间内的扬声器单体3，扬声器单体3的一侧具有振膜31，振膜31与第一盖体1合围形成前腔001，第一盖体1的一侧开设与前腔001连通的出声孔111，第一盖体1具有与振膜31正对的前腔壁121，扬声器结构还包括设置于前腔壁121的靠近振膜31侧的软质支撑物4。
在前腔壁121设置的软质支撑物4可以在振膜31朝前腔壁121振动的振幅过大时抑制振膜31的振幅，避免振膜31撞击前腔壁121，且软质支撑物4在振膜31振幅异常过大时能起到缓冲作用，避免杂音出现，本方案的扬声器结构能够起到抑制振膜31振幅及保护扬声器结构的作用，从而提高扬声器结构的音质及使用寿命。
在本实施例中，第一盖体1包括与第二盖体2相连的主体部11及固定于主体部11的正对振膜31处的前腔钢片12，主体部11的正对振膜31处开设由前腔钢片12盖合的开口114，前腔壁121为前腔钢片12的盖合开口114的部分，即软质支撑物4设置于前腔钢片12靠近振膜31的一侧，通过软质支撑物4可以抑制振膜31的振幅及对振膜31进行缓冲，从而防止振膜31撞击前腔钢片12而发出杂声。
第一盖体1包括与第二盖体2相连的主体部11及固定于主体部11的正对振膜31处的前腔钢片12，主体部11的远离扬声器单体3侧朝靠近扬声器单体3的方向凹陷形成环绕开口114的装配槽113，前腔壁121为前腔钢片12的正对振膜31的中间部分，前腔钢片12还包括自前腔壁121的周缘朝装配槽113弯曲延伸形成的与装配槽113匹配的装配边沿122，装配边沿122固定于装配槽113内。具体的，在本实施例中，装配边沿122与主体部11注塑为一体，从而使装配边沿122与主体部11连接紧密，在其他实施例中，装配边沿122可以嵌设于装配槽113内之后通过螺钉与装配槽113底部固定，装配边沿122可以通过粘接、焊接等方式与装配槽113底部固定，装配槽113的设置可以方便前腔钢片12的定位，同时可保证前腔钢片12与主体部11之间连接的牢固性。
振膜31包括位于中部的球顶311，软质支撑物4在垂直于球顶311的方向的投影至少部分与球顶311重合。具体的，为了达到对振膜31的缓冲效果，可以在前腔壁121的与球顶311远离出声孔111的两角正对处均设置软质支撑物4，也可以在前腔壁121的与球顶311的四个角正对处均设置软质支撑物4，软质支撑物4可以通过螺钉与前腔壁121固定连接。在其他实施例中，软质支撑物4可以设置在前腔壁121的与球顶311边缘正对处，具体数量和边缘位置可以根据实际情况调整，例如，可以在前腔壁121的与球顶311远离出声孔111的边缘正对处均匀设置一个、两个或三个等的软质支撑物4，也可以在前腔壁121的与球顶311的四个边缘正对处都均匀设置一个、两个或三个等的软质支撑物4。
在本实施例中，软质支撑物4采用泡棉或吸声棉。泡棉的厚度可以在0.1mm-0.4mm以内，优选0.2mm，其厚度可以根据实际情况具体设置，例如0.15mm、0.25mm、0.30mm、0.35mm等；吸声棉的厚度可以在0.15mm-0.5mm以内，优选0.35mm，其厚度可以根据实际情况具体设置，例如0.20mm、0.25mm、0.30mm、0.40mm、0.45mm等。
出声孔111开设于主体部11的一侧，扬声器结构还包括盖设于出声孔111的远离前腔001端的网板，出声孔111内设置支撑板112，第二盖体2与扬声器单体3围合形成后腔002，第二盖体2包括与主体部11配合连接的盖体部21及与盖体部21注塑为一体的后腔钢片22；扬声器结构还包括与主体部11注塑为一体的加固片6，从而提高第一盖体1的强度。
以上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 (9)

  1. 一种扬声器结构，包括第一盖体、与所述第一盖体合围形成收容空间的第二盖体及收容于所述收容空间内的扬声器单体，所述扬声器单体的一侧具有振膜，所述振膜与所述第一盖体合围形成前腔，所述第一盖体的一侧开设与所述前腔连通的出声孔，其特征在于，所述第一盖体具有与所述振膜正对的前腔壁，所述扬声器结构还包括设置于所述前腔壁的靠近所述振膜侧的软质支撑物。
  2. 根据权利要求1所述的扬声器结构，其特征在于，所述振膜包括位于中部的球顶，所述软质支撑物在垂直于所述球顶的方向的投影至少部分与所述球顶重合。
  3. 根据权利要求2所述的扬声器结构，其特征在于，所述前腔壁的与所述球顶远离所述出声孔的两角正对处均设置所述软质支撑物。
  4. 根据权利要求2所述的扬声器结构，其特征在于，所述前腔壁的与所述球顶的四个角正对处均设置所述软质支撑物。
  5. 根据权利要求1所述的扬声器结构，其特征在于，所述软质支撑物采用泡棉或吸声棉。
  6. 根据权利要求1-5中任意一项所述的扬声器结构，其特征在于，所述第一盖体包括与所述第二盖体相连的主体部及固定于所述主体部的正对所述振膜处的前腔钢片，所述主体部的正对所述振膜处开设开口，所述前腔钢片覆盖所述开口。
  7. 根据权利要求6所述的扬声器结构，其特征在于，所述主体部的远离所述扬声器单体侧朝靠近所述扬声器单体的方向凹陷形成环绕所述开口的装配槽，所述前腔壁为所述前腔钢片覆盖开口的部分，所述前腔钢片还包括自所述前腔壁的周缘朝所述装配槽弯曲延伸形成的与所述装配槽匹配的装配边沿，所述装配边沿固定于所述装配槽内。
  8. 根据权利要求6所述的扬声器结构，其特征在于，所述出声孔开设于所述主体部的一侧，所述扬声器结构还包括盖设于所述出声孔的远离所述前腔端的网板。
  9. 一种电子设备，其特征在于，包括如权利要求1-8中任意一项所述的扬声器结构。
PCT/CN2019/129901 2019-12-30 2019-12-30 扬声器结构及应用该扬声器结构的电子设备 WO2021134204A1 (zh)

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US20110038495A1 (en) * 2009-08-12 2011-02-17 Samsung Electronics Co., Ltd. Piezoelectric micro speaker and method of manufacturing the same
CN103002385A (zh) * 2012-09-14 2013-03-27 精拓丽音科技（北京）有限公司 具有自适应压力平衡的微型扬声器模组结构
CN204795204U (zh) * 2015-05-27 2015-11-18 上海与德通讯技术有限公司 一种移动终端的扬声器结构
CN208638608U (zh) * 2018-06-12 2019-03-22 瑞声科技(新加坡)有限公司 扬声器模组

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Publication number Priority date Publication date Assignee Title
US20110038495A1 (en) * 2009-08-12 2011-02-17 Samsung Electronics Co., Ltd. Piezoelectric micro speaker and method of manufacturing the same
CN103002385A (zh) * 2012-09-14 2013-03-27 精拓丽音科技（北京）有限公司 具有自适应压力平衡的微型扬声器模组结构
CN204795204U (zh) * 2015-05-27 2015-11-18 上海与德通讯技术有限公司 一种移动终端的扬声器结构
CN208638608U (zh) * 2018-06-12 2019-03-22 瑞声科技(新加坡)有限公司 扬声器模组

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