WO2020134310A1 - 一种扬声器 - Google Patents

一种扬声器 Download PDF

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Publication number
WO2020134310A1
WO2020134310A1 PCT/CN2019/110085 CN2019110085W WO2020134310A1 WO 2020134310 A1 WO2020134310 A1 WO 2020134310A1 CN 2019110085 W CN2019110085 W CN 2019110085W WO 2020134310 A1 WO2020134310 A1 WO 2020134310A1
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WO
WIPO (PCT)
Prior art keywords
magnetic steel
main
step portion
circuit structure
splint
Prior art date
Application number
PCT/CN2019/110085
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English (en)
French (fr)
Inventor
顾小江
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
Publication of WO2020134310A1 publication Critical patent/WO2020134310A1/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
    • 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
    • H04R2209/027—Electrical or mechanical reduction of yoke vibration
    • 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
    • H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin
    • 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 electroacoustics, and particularly relates to a speaker.
  • the purpose of the utility model is to provide a loudspeaker, which aims to solve the problem that the upper splint of the loudspeaker in the prior art is moved downward and the thickness of the side magnetic steel is reduced, resulting in the loss of SPL.
  • a loudspeaker includes a vibration structure, a magnetic circuit structure, and a housing accommodating the vibration structure and the magnetic circuit structure.
  • the housing includes a basin frame and a front cover.
  • the magnetic circuit structure includes a lower splint assembled at the bottom of the basin frame, a main magnet steel fixed to the lower splint, side magnets disposed on both sides of the main magnet, and a magnet attached to the upper end of the side magnets
  • An upper splint the side magnetic steel includes an upper end surface facing the upper splint and a recessed portion recessed toward the lower splint from a side of the upper end surface close to the main magnetic steel, the recessed portion includes a A first surface of the upper clamping plate and a second surface connecting the first surface and the upper end surface, the upper clamping plate includes a body portion fixed to the upper end surface, and the main magnetic steel is approached from the body portion A first step portion bent toward the first surface and a second step portion bent from the first step portion toward the main magnet
  • the second surface is parallel to the vibration direction
  • the first step portion extends vertically from the side of the main body portion close to the main magnet along the vibration direction and toward the first surface.
  • first surface is perpendicular to the vibration direction
  • second step portion extends horizontally from the first step portion along the vertical vibration direction and toward the main magnetic steel.
  • both sides in the longitudinal direction of the upper splint are also provided with downwardly extending embedding parts, and the embedding parts are inserted into the inner wall of the basin shelf.
  • the main magnetic steel has one
  • the side magnetic steel has two
  • the two side magnetic steels are disposed on opposite sides of the main magnetic steel.
  • the upper clamping plate is arranged symmetrically with respect to the central axis of the main magnetic steel.
  • the beneficial effect of the utility model lies in that: the side of the upper clamping plate of the utility model near the main magnetic steel is provided with a first stepped portion and a second stepped portion which are bent downward, and the top of the side magnetic steel is provided with the first stepped portion and The second stepped portion is fixedly connected to each other. Since only the concave part on the side magnetic steel makes local space for the first step and the second step of the upper splint, the thickness of other parts of the side magnetic steel is not reduced, and the overall thickness of the entire magnetic circuit structure is not reduced. , Can effectively avoid SPL loss.
  • FIG. 1 is an exploded schematic view of a speaker provided by an embodiment of the present invention
  • FIG. 2 is an enlarged schematic structural view of part B in FIG. 1;
  • FIG. 3 is a schematic diagram of the top structure in FIG. 1;
  • FIG. 4 is a schematic cross-sectional view taken along the A-A plane in FIG. 3;
  • FIG. 5 is a schematic cross-sectional view taken along the line B-B in FIG. 3.
  • the sound-generating device includes a vibration structure 2, a magnetic circuit structure 3, and a housing 1 accommodating the vibration structure 2 and the magnetic circuit structure 3.
  • the housing 1 includes a basin frame 11 and The front cover 12 is connected to the basin frame 11, the magnetic circuit structure 3 is assembled on the bottom of the basin frame 1, and the vibration structure 2 is assembled on the magnetic circuit structure 3.
  • the vibrating structure 2 includes a sound membrane 22, a voice coil 23, and a dome 21.
  • the sound membrane 22 is disposed between the pot holder 1111 and the front cover 12, and the magnetic circuit structure 3 includes a lower clamping plate 34 assembled at the bottom of the pot holder 11, fixed to the bottom.
  • the side magnetic steel 32 includes an upper end surface 322 facing the upper clamping plate 33 and a recessed portion 321 recessed toward the lower clamping plate 34 from a side of the upper end surface 322 near the main magnetic steel 31, and the recessed portion 321 includes a first surface 323 facing the upper clamping plate 33 And the second surface 324 connecting the first surface 323 and the upper end surface 322, the upper clamping plate 33 includes a body portion 331 fixed to the upper end surface 322, and an edge from the body portion 331 near the main magnet 31 side is bent toward the first surface 323
  • the extended first step portion 332 and the second step portion 333 that is bent and extended from the first step portion 332 toward the main magnet 31, the first step portion 332 is fixed to the second surface 324, and the second step portion 333 is fixed to the first Surface 323.
  • the voice coil 23 When the voice coil 23 is energized, the voice coil 23 drives the voice membrane 22 to vibrate and sound under the action of the magnetic force of the magnetic circuit structure 3.
  • the first stepped portion 332 and the second stepped portion 333 of the upper clamp 33 allow the vibration space of the voice coil 23 to vibrate, and since only the recessed portion 321 on the side magnetic steel 32 corresponds to the first stepped portion 332 and the second clamped portion of the upper clamp 33
  • the second step portion 333 gives way, the thickness of the other parts of the side magnetic steel 32 is not reduced, and the overall thickness of the entire magnetic circuit structure 3 is not reduced, which can effectively avoid SPL loss.
  • the second surface 324 is parallel to the vibration direction
  • the first step portion 332 extends vertically from the side of the main body portion 331 near the main magnetic steel 31 parallel to the vibration direction and toward the first surface 323.
  • the first surface 323 is perpendicular to the vibration direction
  • the second step portion 333 extends horizontally from the first step portion 332 in the vertical vibration direction and toward the main magnetic steel 31.
  • the upper clamping plate 33 is also provided with a downwardly extending inserting portion 334 on both sides in the longitudinal direction.
  • the inserting portion 334 is inserted into the inner wall of the pot holder 11 to limit the side magnetic steel 32 , To avoid the movement of the side magnetic steel 32, thereby ensuring the stability of the magnetic circuit structure 3.
  • the upper clamping plate 33 can also be integrally injection molded with the basin frame 11.
  • the side magnets 32 are arranged symmetrically with respect to the central axis of the main magnet 31, and accordingly, the upper clamping plate 33 is also arranged symmetrically with respect to the center axis of the main magnet 31.
  • the magnetic circuit structure 3 may also be a magnetic circuit structure with multiple sets of magnetic circuits.

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

Abstract

本实用新型提供了一种扬声器，包括振动结构、磁路结构以及壳体，壳体包括盆架和前盖，磁路结构包括下夹板、主磁钢、边磁钢以及贴设于边磁钢上端的上夹板，边磁钢包括朝向上夹板的上端面以及自上端面靠近主磁钢的一侧朝向下夹板方向凹陷的凹陷部，凹陷部包括第一表面，上夹板包括主体部、自主体部靠近主磁钢一侧的边缘朝向第一表面弯折延伸的第一台阶部和第二台阶部，第一台阶部固定于第二表面，第二台阶部固定于第一表面。在本实用新型中，边磁钢上的凹陷部为上夹板的第一台阶部和第二台阶部让位，边磁钢其他部位的厚度没有减小，整个磁路结构的整体厚度也没有减小，可有效避免SPL损失。

Description

一种扬声器 技术领域
本实用新型属于电声技术领域，尤其涉及一种扬声器。
 背景技术
随着科技的快速发展，音频设备也不断快速发展，人们对音频设备的功能性要求越来越高，对于扬声器，越来越多人对其音频性能提出了较高的要求。相关技术中，为了给扬声器振动结构中的音圈振动让出振动空间， 上夹板一般整体下移设置，由于上夹板需要占据一定空间，边磁钢也随着上夹板的下移设置而减小厚度，导致扬声器SPL（sound pressure level，声压级）损失。
 技术问题
本实用新型的目的在于提供一种扬声器，旨在解决现有技术中扬声器的上夹板整体下移设置，边磁钢厚度减小导致SPL损失的问题。
 技术解决方案
本实用新型的技术方案如下：一种扬声器，其包括振动结构、磁路结构以及容置所述振动结构和所述磁路结构的壳体，所述壳体包括盆架和前盖，所述磁路结构包括装配在所述盆架底部的下夹板、固定于所述下夹板的主磁钢、设置于所述主磁钢两侧的边磁钢以及贴设与所述边磁钢上端的上夹板，所述边磁钢包括朝向所述上夹板的上端面以及自所述上端面靠近所述主磁钢的一侧朝向所述下夹板方向凹陷的凹陷部，所述凹陷部包括朝向所述上夹板的第一表面以及连接所述第一表面和所述上端面的第二表面，所述上夹板包括固定于所述上端面的主体部、自所述主体部靠近所述主磁钢一侧的边缘朝向所述第一表面弯折延伸的第一台阶部以及自所述第一台阶部朝向所述主磁钢弯折延伸的第二台阶部，所述第一台阶部固定于所述第二表面，所述第二台阶部固定于所述第一表面。
进一步地，所述第二表面平行于振动方向，所述第一台阶部自所述主体部靠近所述主磁钢的一侧沿平行于振动方向且朝向所述第一表面竖直延伸。
进一步地，所述第一表面垂直于振动方向，所述第二台阶部自所述第一台阶部沿垂直振动方向且朝向所述主磁钢水平延伸。
进一步地，所述上夹板长度方向的两侧还设置有向下延伸的嵌入部，所述嵌入部插入所述盆架内壁。
进一步地，所述主磁钢具有一个，所述边磁钢具有两个，两个所述边磁钢设置于所述主磁钢的相对两侧。
进一步地，所述上夹板关于所述主磁钢的中心轴线对称设置。
 有益效果
本实用新型的有益效果在于：本实用新型上夹板靠近主磁钢的一侧设置有向下折弯的第一台阶部和第二台阶部，边磁钢顶部对应设置有与第一台阶部和第二台阶部相互固定连接的凹陷部。由于边磁钢上只有凹陷部为上夹板的第一台阶部和第二台阶部做出局部空间让位，边磁钢其他部位的厚度没有减小，整个磁路结构的整体厚度也没有减小，可有效避免SPL损失。
 附图说明
图1是本实用新型实施例提供的扬声器的分解结构示意图；
图2是图1中B部分的放大结构示意图；
图3是图1中的俯视结构示意图；
图4是图3中的A-A面剖切示意图；
图5是图3中的B-B面剖切示意图。
 本发明的实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。
在本实施例中，如图1至图3所示，发声器件包括振动结构2、磁路结构3以及容置振动结构2和磁路结构3的壳体1，壳体1包括盆架11和盖接于盆架11上面的前盖 12，磁路结构3装配于盆架1底部，振动结构2装配在磁路结构3上。振动结构2包括音膜22、音圈23和球顶21，音膜22设置于盆架1111和前盖 12之间，磁路结构3包括装配在盆架11底部的下夹板34、固定于下夹板34的主磁钢31、设置于主磁钢31两侧的边磁钢32以及贴设于边磁钢32上端的上夹板33，音圈23套设主磁钢31，球顶21设置在音膜22上端。边磁钢32包括朝向上夹板33的上端面322以及自上端面322靠近主磁钢31的一侧朝向下夹板34方向凹陷的凹陷部321，凹陷部321包括朝向上夹板33的第一表面323以及连接第一表面323和上端面322的第二表面324，上夹板33包括固定于上端面322的主体部331、自主体部331靠近主磁钢31一侧的边缘朝向第一表面323弯折延伸的第一台阶部332以及自第一台阶部332朝向主磁钢31弯折延伸的第二台阶部333，第一台阶部332固定于第二表面324，第二台阶部333固定于第一表面323。当音圈23通电后，音圈23在磁路结构3的磁场力作用下驱动音膜22振动发声。上夹板33的第一台阶部332和第二台阶部333为音圈23振动让出振动空间，并且由于边磁钢32上只有凹陷部321相应地为上夹板33的第一台阶部332和第二台阶部333让位，边磁钢32其他部位的厚度没有减小，整个磁路结构3的整体厚度也没有减小，可有效避免SPL损失。
优选的，第二表面324平行于振动方向，第一台阶部332自主体部331靠近主磁钢31的一侧沿平行于振动方向且朝向第一表面323竖直延伸。第一表面323垂直于振动方向，第二台阶部333自第一台阶部332沿垂直振动方向且朝向主磁钢31水平延伸。
上述实施例中，如图2和图3所示，上夹板33长度方向两侧还设置有向下延伸的嵌入部334，嵌入部334插入盆架11内壁，可对边磁钢32进行限位，避免边磁钢32发生移动，从而保证磁路结构3的稳定性。在其他实施例中，上夹板33也可以和盆架11一体注塑成型。可选的，主磁钢31具有一个，对应地边磁钢32具有两个，两个边磁钢32设置于主磁钢31的相对两侧。优选的，边磁钢32关于主磁钢31的中心轴线对称设置，相应地，上夹板33也关于主磁钢31的中心轴线对称设置。在其他实施例中，磁路结构3也可以是具有多套磁路的磁路结构。
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 (6)

  1. 一种扬声器，其包括振动结构、磁路结构以及容置所述振动结构和所述磁路结构的壳体，所述壳体包括盆架和前盖，所述磁路结构包括装配在所述盆架底部的下夹板、固定于所述下夹板的主磁钢、设置于所述主磁钢两侧的边磁钢以及贴设于所述边磁钢上端的上夹板，其特征在于，所述边磁钢包括朝向所述上夹板的上端面以及自所述上端面靠近所述主磁钢的一侧朝向所述下夹板方向凹陷的凹陷部，所述凹陷部包括朝向所述上夹板的第一表面以及连接所述第一表面和所述上端面的第二表面，所述上夹板包括固定于所述上端面的主体部、自所述主体部靠近所述主磁钢一侧的边缘朝向所述第一表面弯折延伸的第一台阶部以及自所述第一台阶部朝向所述主磁钢弯折延伸的第二台阶部，所述第一台阶部固定于所述第二表面，所述第二台阶部固定于所述第一表面。
  2. 如权利要求1所述的扬声器，其特征在于，所述第二表面平行于振动方向，所述第一台阶部自所述主体部靠近所述主磁钢的一侧沿平行于振动方向且朝向所述第一表面竖直延伸。
  3. 如权利要求2所述的扬声器，其特征在于，所述第一表面垂直于振动方向，所述第二台阶部自所述第一台阶部沿垂直振动方向且朝向所述主磁钢水平延伸。
  4. 如权利要求1所述的扬声器，其特征在于，所述上夹板长度方向的两侧还设置有向下延伸的嵌入部，所述嵌入部插入所述盆架内壁。
  5. 如权利要求4所述的扬声器，其特征在于，所述主磁钢具有一个，所述边磁钢具有两个，两个所述边磁钢设置于所述主磁钢的相对两侧。
  6. 如权利要求5所述的扬声器，其特征在于，所述上夹板关于所述主磁钢的中心轴线对称设置。
PCT/CN2019/110085 2018-12-29 2019-10-09 一种扬声器 WO2020134310A1 (zh)

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CN201822269819.4U CN209390339U (zh) 2018-12-29 2018-12-29 一种扬声器

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CN209390339U (zh) * 2018-12-29 2019-09-13 瑞声科技(新加坡)有限公司 一种扬声器
CN213126467U (zh) * 2020-09-25 2021-05-04 瑞声科技(新加坡)有限公司 扬声器单体、扬声器模组及电子设备

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CN107277706A (zh) * 2017-04-15 2017-10-20 瑞声科技(新加坡)有限公司 扬声器
CN209390339U (zh) * 2018-12-29 2019-09-13 瑞声科技(新加坡)有限公司 一种扬声器

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