WO2022062008A1 - 一种发声单体及扬声器箱 - Google Patents

一种发声单体及扬声器箱 Download PDF

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Publication number
WO2022062008A1
WO2022062008A1 PCT/CN2020/122344 CN2020122344W WO2022062008A1 WO 2022062008 A1 WO2022062008 A1 WO 2022062008A1 CN 2020122344 W CN2020122344 W CN 2020122344W WO 2022062008 A1 WO2022062008 A1 WO 2022062008A1
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WO
WIPO (PCT)
Prior art keywords
sound
vibration
vibrating member
curved portion
generating unit
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PCT/CN2020/122344
Other languages
English (en)
French (fr)
Inventor
吴军
杨虎虎
任圣
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 WO2022062008A1 publication Critical patent/WO2022062008A1/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 present application relates to the field of electro-acoustics, and in particular, to a sound-generating unit and a speaker box.
  • the sound-emitting device drives the sound film in the vibration system to vibrate through the magnetic circuit system, and repeatedly pushes the air to achieve sound production.
  • the sound film directly affects the performance of the sound-emitting device.
  • the effective vibration area of the sound film is one of the important factors affecting the acoustic performance of the sound-emitting device.
  • the effective vibration area (Sd) of the sound film of the sound-emitting device in the prior art is small, and the acoustic performance of the sound-emitting device will also be accordingly. affected.
  • the purpose of the present application is to provide a sound-generating unit and a speaker box, so as to increase the effective vibration area of the sound membrane and improve the acoustic performance of the sound-generating unit.
  • an embodiment provides a sound-generating unit, the sound-generating unit includes a sound membrane that vibrates and emits sound, and a voice coil that is fixed to the sound membrane and drives the sound membrane to vibrate and emit sound and a pot frame for supporting the sound film, the sound film includes a first vibrating member located above the pot frame and a second vibrating member extending from the edge of the first vibrating member towards the pot frame and one end of the second vibration member away from the first vibration member is fixed to the basin frame, and the second vibration member includes at least one curved portion recessed toward or away from the voice coil along the vertical vibration direction.
  • the bending portion includes a first bending portion and a second bending portion that are sequentially arranged from an edge of the first vibrating member in a direction away from the first vibrating member, and the first bending portion is The opening is opposite to the opening of the second curved portion.
  • the first bending portion is formed by the second vibration member being recessed away from the voice coil along a vertical vibration direction, and the second bending portion is formed by the second vibration member towards the vertical vibration direction.
  • the voice coil is recessed.
  • the cross section of the first bending portion along the vibration direction of the first vibrating member is semicircular
  • the cross section of the second bending portion along the vibration direction of the first vibrating member is semicircular. round.
  • the radius of the second curved portion is larger than the radius of the first curved portion.
  • the second vibrating member further includes a fixing portion extending from the distal end of the bending portion in a direction away from the first vibrating member.
  • the outer edge of the orthographic projection of the first bending portion along the vibration direction of the first vibrating member and the outer edge of the orthographic projection of the fixing portion along the vibration direction of the first vibrating member coincide.
  • the outer wall surface of the basin frame is concave to form a limiting notch for accommodating the fixing portion.
  • the outer surface of the fixing portion is flush with the outer wall surface of the basin frame.
  • an embodiment provides a speaker box, the speaker box includes the sound-generating unit of the first aspect.
  • the second vibration member is located between the first vibration member and the basin frame to realize the connection between the sound film and the basin frame, so that the vibration area of the sound film not only includes the area of the first vibration member, but also includes the area of the second vibration member; the second vibration member
  • the part includes at least one curved part, and the curved part is formed by the second vibration part concave toward or away from the voice coil along the vertical vibration direction. Therefore, the route of the second vibration part toward the basin frame is curved rather than straight, so as to increase the first vibration.
  • the area of the two vibrating parts increases the effective vibration area of the sound membrane, that is, the use of the technical solution to enlarge the effective vibration area of the sound membrane can effectively improve the acoustic performance of the sound-generating unit.
  • FIG. 1 is a schematic diagram of the overall structure of a sounding monomer according to an embodiment of the application
  • Fig. 2 is the exploded schematic diagram of the sounding monomer in Fig. 1;
  • Fig. 3 is the structural schematic diagram of the sound membrane of the sounding monomer in Fig. 1;
  • Fig. 4 is the sectional view of the A-A direction of the sounding monomer in Fig. 1;
  • FIG. 5 is a partial enlarged view of C in FIG. 4 .
  • the present application provides a sound-generating unit 100 , which includes a basin frame 110 , a magnetic circuit system 130 fixed on the basin frame 110 , and a vibration system 120 , and the vibration system 120 includes a sound membrane 10 and the voice coil 20 fixed on the sound film 10 and driving the sound film 10 to vibrate and produce sound, the magnetic circuit system 130 is used for driving the sound film 10 of the vibration system 120 to vibrate and produce sound.
  • the sound membrane 10 of the sound-generating unit 100 in the embodiment of the present application for vibrating sound has a larger effective vibration area, thereby improving the acoustic performance of the sound-generating unit 100 .
  • the sound film 10 includes a first vibrating member 11 and a second vibrating member 12 , wherein the second vibrating member 12 extends from the edge of the first vibrating member 11 toward the basin frame 110 .
  • One end of the second vibration member 12 away from the first vibration member 11 is fixed to the basin frame 110 , and the second vibration member 12 includes at least one curved portion 121 recessed toward or away from the voice coil 20 along the vertical vibration direction.
  • the second vibrating member 12 is located between the first vibrating member 11 and the basin frame 110 to realize the connection between the sound membrane 10 and the basin frame 110, so that the vibration area of the sound membrane 10 not only includes the area of the first vibrating member 11, It also includes the area of the second vibration member 12; the second vibration member 12 includes at least one curved portion 121, and the curved portion 121 is formed by the second vibration member 12 concave toward or away from the voice coil 20 along the vertical vibration direction. Therefore, the second vibration member 12 The routing line toward the basin frame 110 is curved, not straight, so as to increase the area of the second vibrating member 12, thereby increasing the effective vibration area of the sound film 10, that is, using the technical solution to effectively reduce the sound film 10. The enlarged vibration area can effectively improve the acoustic performance of the sound-generating unit 100 .
  • the sound membrane 10 further includes a dome 13 located in the middle of the first vibrating member 11 , and the voice coil 20 is located under the dome 13 to drive the sound membrane 10 to vibrate and produce sound.
  • the bending portion 121 includes a first bending portion 1211 and a second bending portion 1212 that are sequentially arranged from the edge of the first vibrating member 11 toward the direction away from the first vibrating member 11 .
  • first curved portion 1211 and the second curved portion 1212 may be one or more, and no matter what the number of the first curved portion 1211 and the second curved portion 1212 is, the first curved portion 1211 and the second curved portion 1212
  • the 1212 are arranged in sequence from the edge of the first vibrating member 11 to the direction away from the first vibrating member 11 , and the arrangement direction of the first bending portion 1211 and the second bending portion 1212 is shown by the arrow in FIG. 4 .
  • the opening directions of the first curved portion 1211 and the second curved portion 1212 may be the same or opposite.
  • the connection between the first curved portion 1211 and the second curved portion 1212 is likely to overlap, and the range of the increase in the effective vibration area of the sound membrane 10 is small.
  • the opening of the first curved portion 1211 and the opening of the second curved portion 1212 face oppositely.
  • both the first curved portion 1211 and the second curved portion 1212 are one, and the first curved portion 1211 and the second curved portion 1212 with opposite opening directions constitute the curved portion 121 , and the curved portion 121 can be further enlarged. That is, the effective vibration area of the sound membrane 10 is increased, and at the same time, the structure of the bending portion 121 is guaranteed to be stable and the force is stable.
  • the opening directions of the first curved portion 1211 and the second curved portion 1212 are defined, since the first curved portion 1211 and the second curved portion 1212 are away from the first
  • the directions of the vibrating members 11 are arranged in sequence. In order to avoid overlapping with the first vibrating member 11 when the first bending portion 1211 is formed, the first bending portion 1211 is arranged so that the second vibrating member 12 is away from the voice coil 20 along the vertical vibration direction.
  • Concave formation that is, the opening of the first curved portion 1211 faces the inside of the sound membrane 10; and the second curved portion 1212 is formed by the concave formation of the second vibration member 12 along the vertical vibration direction toward the voice coil 20, that is, the opening of the second curved portion 1212 faces Outside the sound membrane 10, it is ensured that the opening directions of the first curved portion 1211 and the second curved portion 1212 are opposite.
  • the cross section of the first bending portion 1211 along the vibration direction of the first vibration member 11 and the cross section of the second bending portion 1212 along the vibration direction of the first vibration member 11 may be semicircular or elliptical shape or other shapes.
  • the cross-section of the first bending portion 1211 along the vibration direction of the first vibrating member 11 and the cross-section of the second bending portion 1212 along the vibration direction of the first vibration member 11 are both semicircular.
  • the radius of the second curved portion 1212 is greater than the radius of the first curved portion 1211 .
  • the first curved portion 1211 protrudes from the inside of the sound membrane 10 to the outside thereof, therefore, the first curved portion 1211 is relatively protruded from the first vibrating member 11 ; the second curved portion 1212 is concave from the outside of the sound membrane 10 to the inside thereof, so , the second curved portion 1212 is relatively concave in the first vibrating member 11 .
  • the radii of the first curved portion 1211 and the second curved portion 1212 are limited, so that the radius of the second curved portion 1212 is larger than the radius of the first curved portion 1211 , that is, the second curved portion concave in the first vibration member 11 is enlarged
  • the area of 1212 reduces the area protruding from the first curved portion 1211 of the first vibrating member 11, which not only ensures that the effective vibration area of the sound membrane 10 can be maximized, but also ensures that the volume of the sound membrane 10 can be miniaturized to adapt to sound production. The need for miniaturization of the monomer 100.
  • the second vibrating member 12 further includes a fixing portion 122 extending from the distal end of the bending portion 121 in a direction away from the first vibrating member 11 .
  • the fixing portion 122 is used to be fixed with the basin frame 110 , and the bending portion 121 is located between the first vibrating member 11 and the fixing portion 122 to effectively ensure the vibration effect of the bending portion 121 .
  • the outer edge of the orthographic projection of the first bending portion 121 along the vibration direction of the first vibrating member 11 coincides with the outer edge of the orthographic projection of the fixing portion 122 along the vibration direction of the first vibrating member 11 .
  • the first curved portion 1211 and the fixed portion 122 determine the volume of the sound membrane 10
  • the fixed portion 122 is formed by extending from the end of the curved portion 121 .
  • the outer edge of the orthographic projection coincides with the outer edge of the orthographic projection of the first curved portion 1211 along the vibration direction of the first vibrating member 11
  • the fixed portion 122 is prevented from protruding from the first curved portion 1211 and the volume of the sound membrane 10 is increased.
  • the area of the connection between the curved portion 121 and the fixed portion 122 is maximized.
  • the limiting notch 110 a is concavely formed on the outer wall surface of the basin frame 110 , and the fixing portion 122 of the first vibrating member 11 is accommodated in the limiting notch 110 a , so as to realize the connection between the sound membrane 10 and the basin. connection to rack 110.
  • the outer surface of the fixing portion 122 is flush with the outer wall surface of the basin frame 110 . Therefore, the outer surface of the first curved portion 1211 , the outer surface of the fixing portion 122 and the outer wall surface of the basin frame 110 are all mutually It is flush, which improves the overall aesthetics of the sounding unit 100; at the same time, it prevents the fixed part 122 and the first curved part 1211 from protruding from the basin frame 110, resulting in an increase in the volume of the entire sounding unit 100, which is not conducive to the formation of a miniaturized sound. Monomer 100.
  • a curved surface 123 is formed between the end of the curved portion 121 and the fixing portion 122 ; the pot frame 110 is provided with a chamfered structure 110 b , when the fixing portion 122 is assembled to the pot frame When the limiting notch 110a of 110 is formed, the curved surface 123 and the chamfered structure 110b are adapted to be assembled.
  • the basin frame 110 is a hollow rectangle as a whole
  • the magnetic circuit system 130 includes a magnetic bowl 30 fixedly connected to the end of the basin frame 110 away from the sound membrane 10 , and sandwiched between the basin frame 110 and the magnetic bowl
  • the main magnetic steel 40 and the auxiliary magnetic steel 50 between 30 and the pole core 60 attached to the main magnetic steel 40, the auxiliary magnetic steel 50 is arranged around the main magnetic steel 40 to form a magnetic gap
  • the voice coil 20 is located at least partially in the magnetic gap.
  • the magnetic bowl 30 includes a first clamping portion 31 for clamping the main magnetic steel 40 and a second clamping portion 32 for clamping the secondary magnetic steel 50 .
  • the basin frame 110 extends toward the magnetic bowl 30 to form a positioning column 110c
  • the second clamping portion 32 is provided with a first positioning gap 321
  • the secondary magnetic steel 50 is provided with a second positioning gap 51
  • the positioning column 110c the first positioning The notches 321 and the second positioning notches 51 are coaxially disposed.
  • the present application also provides a speaker box, the speaker box includes the above-mentioned sound-generating unit 100, so as to improve the acoustic performance of the speaker box and maintain its miniaturization.

Abstract

本申请提供了一种发声单体及扬声器箱，所述发声单体包括振动发声的音膜、固定于音膜并驱动音膜振动发声的音圈和用于支撑音膜的盆架，音膜包括位于盆架上方的第一振动件和自第一振动件的边缘朝向盆架延伸形成的第二振动件，第二振动件的远离第一振动件的一端与盆架固定，第二振动件包括沿垂直振动方向朝向或远离音圈凹陷的至少一个弯曲部。第二振动件位于第一振动件和盆架之间以实现音膜与盆架连接，使得音膜的振动面积不仅包括第一振动件的面积，还包括第二振动件的面积；通过设置至少一个弯曲部以增大第二振动件的面积，从而增大了音膜的有效振动面积，即运用本技术方案将音膜的有效振动面积扩大化，可以有效改善发声器件的声学性能。

Description

一种发声单体及扬声器箱 技术领域
本申请涉及电声领域，尤其涉及一种发声单体及扬声器箱。
 背景技术
随着电子信息技术的快速发展，越来越多的发声器件应用于各类电子产品上，尤其是广为人们应用的移动通讯设备，人们不但关心其微型化、多功能，更要求其具有高质量的语音效果。
 技术问题
发声器件通过磁路系统驱动振动系统中的音膜振动，反复推动空气而实现发声，音膜作为发声器件的核心部件，其设计的好坏直接影响着发声器件的性能。其中，音膜的有效振动面积是影响发声器件的声学性能的重要因素之一，然而现有技术中发声器件的音膜的有效振动面积（Sd）较小，进而发声器件的声学性能也会因此受到影响。
因此，有必要提供一种新型的发声单体及扬声器箱来解决上述问题。
 技术解决方案
本申请的目的在于提供一种发声单体及扬声器箱，以增大音膜的有效振动面积，提高发声单体的声学性能。
为此，根据第一方面，一种实施例中提供了一种发声单体，所述发声单体包括振动发声的音膜、固定于所述音膜并驱动所述音膜振动发声的音圈和用于支撑所述音膜的盆架，所述音膜包括位于所述盆架上方的第一振动件和自所述第一振动件的边缘朝向所述盆架延伸形成的第二振动件，所述第二振动件的远离所述第一振动件的一端与盆架固定，所述第二振动件包括沿垂直振动方向朝向或远离所述音圈凹陷的至少一个弯曲部。
作为一种改进，所述弯曲部包括自所述第一振动件的边缘朝远离所述第一振动件的方向依次排列的第一弯曲部和第二弯曲部，且所述第一弯曲部的开口与所述第二弯曲部的开口朝向相反。
作为一种改进，所述第一弯曲部由所述第二振动件沿垂直振动方向远离所述音圈凹陷形成，所述第二弯曲部由所述第二振动件沿垂直振动方向朝向所述音圈凹陷形成。
作为一种改进，所述第一弯曲部的沿所述第一振动件的振动方向的截面呈半圆形，所述第二弯曲部的沿所述第一振动件的振动方向的截面呈半圆形。
作为一种改进，所述第二弯曲部的半径大于所述第一弯曲部的半径。
作为一种改进，所述第二振动件还包括自所述弯曲部的末端朝远离所述第一振动件的方向延伸形成的固定部。
作为一种改进，所述第一弯曲部沿所述第一振动件的振动方向上的正投影的外边缘与所述固定部沿所述第一振动件的振动方向上的正投影的外边缘重合。
作为一种改进，所述盆架的外壁面内凹形成用于收容所述固定部的限位缺口。
作为一种改进，所述固定部的外表面与所述盆架的外壁面齐平。
根据第二方面，一种实施例提供了一种扬声器箱，所述扬声器箱包括第一方面所述的发声单体。
 有益效果
本申请的有益效果在于：
第二振动件位于第一振动件和盆架之间以实现音膜与盆架连接，使得音膜的振动面积不仅包括第一振动件的面积，还包括第二振动件的面积；第二振动件包括至少一个弯曲部，弯曲部由第二振动件沿垂直振动方向朝向或远离音圈凹陷形成，因此，第二振动件朝向盆架的走线呈曲线型，并非直线型，以增大第二振动件的面积，从而增大了音膜的有效振动面积，即运用本技术方案将音膜的有效振动面积扩大化，可以有效改善发声单体的声学性能。
 附图说明
图1为本申请一实施例的发声单体的整体结构示意图；
图2为图1中的发声单体的分解示意图；
图3为图1中的发声单体的音膜的结构示意图；
图4为图1中的发声单体的A-A方向的剖视图；
图5为图4中C处局部放大图。
 本发明的实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳的实施例。但是，本申请可以通过其他多种不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1、图2及图4，本申请提供了一种发声单体100，其包括盆架110、固定于盆架110上的磁路系统130和振动系统120，振动系统120包括音膜10和固定于音膜10并驱动音膜10振动发声的音圈20，磁路系统130用于驱动振动系统120的音膜10振动发声。
本申请实施例中的发声单体100的用于振动发声的音膜10具有更大的的有效振动面积，从而提高发声单体100的声学性能。
在本申请实施例中，请参考图3，该音膜10包括第一振动件11和第二振动件12，其中，第二振动件12自第一振动件11的边缘朝向盆架110延伸形成，第二振动件12远离第一振动件11的一端与盆架110固定，且第二振动件12包括沿垂直振动方向朝向或远离音圈20凹陷的至少一个弯曲部121。
在本申请中，第二振动件12位于第一振动件11和盆架110之间以实现音膜10与盆架110连接，使得音膜10的振动面积不仅包括第一振动件11的面积，还包括第二振动件12的面积；第二振动件12包括至少一个弯曲部121，弯曲部121由第二振动件12沿垂直振动方向朝向或远离音圈20凹陷形成，因此，第二振动件12朝向盆架110的走线呈曲线型，并非直线型，以增大第二振动件12的面积，从而增大了音膜10的有效振动面积，即运用本技术方案将音膜10的有效振动面积扩大化，可以有效改善发声单体100的声学性能。
此外，音膜10还包括位于第一振动件11中部的球顶13，音圈20则位于球顶13的下方从而驱动音膜10振动发声
请参考3-图5，在一种实施例中，弯曲部121包括自第一振动件11的边缘朝远离第一振动件11的方向依次排列的第一弯曲部1211和第二弯曲部1212。
需要说明的是，第一弯曲部1211和第二弯曲部1212可以一个或多个，且无论第一弯曲部1211和第二弯曲部1212的数量为多少，第一弯曲部1211和第二弯曲部1212均自第一振动件11的边缘朝远离第一振动件11的方向依次排列，第一弯曲部1211和第二弯曲部1212的排列方向如图4中箭头所示。
其中，第一弯曲部1211和第二弯曲部1212的开口朝向可相同也可相反。当第一弯曲部1211与第二弯曲部1212开口朝向相同，第一弯曲部1211和第二弯曲部1212的连接处容易发生重叠，音膜10的有效振动面积增大程度范围较小。
优选地，第一弯曲部1211的开口与第二弯曲部1212的开口朝向相反。例如，参见图5，图中第一弯曲部1211和第二弯曲部1212均为一个，开口方向相反的第一弯曲部1211和第二弯曲部1212组成弯曲部121，可以进一步增大弯曲部121的面积，即增大音膜10的有效振动面积，同时保证弯曲部121的结构稳定、受力稳定。
在一些具体的实施例中，对第一弯曲部1211与第二弯曲部1212的开口方向进行限定，由于第一弯曲部1211与第二弯曲部1212自第一振动件11的边缘朝远离第一振动件11的方向依次排列，为避免第一弯曲部1211形成时与第一振动件11发生重叠，对第一弯曲部1211进行设置使其由第二振动件12沿垂直振动方向远离音圈20凹陷形成，即第一弯曲部1211的开口朝向音膜10内部；而第二弯曲部1212则由第二振动件12沿垂直振动方向朝向音圈20凹陷形成，即第二弯曲部1212的开口朝向音膜10外部，保证第一弯曲部1211与第二弯曲部1212开口方向相反。
在一些具体的实施例中，第一弯曲部1211的沿第一振动件11的振动方向的截面和第二弯曲部1212的沿第一振动件11的振动方向的截面可呈半圆形、椭圆形或其他形状。优选地，参考图5，第一弯曲部1211的沿第一振动件11的振动方向的截面和第二弯曲部1212的沿第一振动件11的振动方向的截面均呈半圆形。
在一种实施例中，第二弯曲部1212的半径大于第一弯曲部1211的半径。第一弯曲部1211自音膜10的内部凸向其外部，因此，第一弯曲部1211相对凸出于第一振动件11；第二弯曲部1212自音膜10的外部凹向其内部，因此，第二弯曲部1212相对内凹于第一振动件11。对第一弯曲部1211和第二弯曲部1212的半径进行限定，使第二弯曲部1212的半径大于第一弯曲部1211的半径，即扩大化内凹于第一振动件11的第二弯曲部1212的面积，缩小化凸出于第一振动件11的第一弯曲部1211的面积，不仅保证了音膜10的有效振动面积能够最大化，同时保证音膜10体积能够微型化，以适应发声单体100微型化的需求。
此外，第二振动件12还包括自弯曲部121的末端朝远离第一振动件11的方向延伸形成的固定部122。固定部122用于与盆架110固定，则弯曲部121位于第一振动件11与固定部122之间，有效保证弯曲部121的振动效果。
在一些具体的实施例中，第一弯曲部121沿第一振动件11的振动方向上的正投影的外边缘与固定部122沿第一振动件11的振动方向上的正投影的外边缘重合。 即第一弯曲部1211和固定部122决定音膜10的体积大小，且固定部122由弯曲部121的末端延伸形成，对固定部122进行设置使其沿第一振动件11的振动方向上的正投影的外边缘重合于第一弯曲部1211沿第一振动件11的振动方向上的正投影的外边缘，一方面防止固定部122凸出第一弯曲部1211而增大音膜10的体积，另一方面将弯曲部121与固定部122之间的连接处的面积最大化。
在发声单体100的一种实施例中，盆架110的外壁面内凹形成述限位缺口110a，第一振动件11的固定部122收容于限位缺口110a，以实现音膜10与盆架110的连接。
在一些具体地实施例中，固定部122的外表面与盆架110的外壁面齐平，因此，第一弯曲部1211的外表面、固定部122的外表面以及盆架110的外壁面均相互齐平，提高了发声单体100的整体美观性；同时防止固定部122和第一弯曲部1211凸出于盆架110而导致整个发声单体100的体积增大，不利于形成微型化的发声单体100。
在一些具体的实施例中，请参考图2及图5，弯曲部121的末端与固定部122之间形成曲面123；盆架110上设置有倒角结构110b，当固定部122组装到盆架110的限位缺口110a时，曲面123与倒角结构110b相适配组装。
进一步地，请参考图2，盆架110整体呈中空的矩形，磁路系统130则包括固定连接于盆架110的远离音膜10的一端的磁碗30、夹设于盆架110与磁碗30之间的主磁钢40和副磁钢50、以及贴附于主磁钢40上的极芯60，副磁钢50环绕主磁钢40设置以形成磁间隙，音圈20则至少部分位于磁间隙内。
在一种具体的实施例中，磁碗30包括用于夹持主磁钢40的第一夹持部31和用于夹持副磁钢50的的第二夹持部32。
此外，盆架110朝向磁碗30延伸形成定位柱110c，第二夹持部32开设有第一定位缺口321，副磁钢50上开设有第二定位缺口51，且定位柱110c、第一定位缺口321以及第二定位缺口51同轴设置，组装磁路系统130时，定位柱110c组装于第一定位缺口321和第二定位缺口51中，以保持磁路系统130与盆架110的相对稳定性。
在一种实施例中，本申请还提供了一种扬声器箱，该扬声器箱包括上述的发声单体100，以提高扬声器箱的声学性能，保持其微型化。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种发声单体，所述发声单体包括振动发声的音膜、固定于所述音膜并驱动所述音膜振动发声的音圈和用于支撑所述音膜的盆架，其特征在于，所述音膜包括位于所述盆架上方的第一振动件和自所述第一振动件的边缘朝向所述盆架延伸形成的第二振动件，所述第二振动件的远离所述第一振动件的一端与盆架固定，所述第二振动件包括沿垂直振动方向朝向或远离所述音圈凹陷的至少一个弯曲部。
  2. 根据权利要求1所述的发声单体，其特征在于：所述弯曲部包括自所述第一振动件的边缘朝远离所述第一振动件的方向依次排列的第一弯曲部和第二弯曲部，且所述第一弯曲部的开口与所述第二弯曲部的开口朝向相反。
  3. 根据权利要求2所述的发声单体，其特征在于，所述第一弯曲部由所述第二振动件沿垂直振动方向远离所述音圈凹陷形成，所述第二弯曲部由所述第二振动件沿垂直振动方向朝向所述音圈凹陷形成。
  4. 根据权利要求3所述的发声单体，其特征在于，所述第一弯曲部的沿所述第一振动件的振动方向的截面呈半圆形，所述第二弯曲部的沿所述第一振动件的振动方向的截面呈半圆形。
  5. 根据权利要求4所述的发声单体，其特征在于，所述第二弯曲部的半径大于所述第一弯曲部的半径。
  6. 根据权利要求3-5中任一项所述的发声单体，其特征在于，所述第二振动件还包括自所述弯曲部的末端朝远离所述第一振动件的方向延伸形成的固定部。
  7. 根据权利要求6所述的发声单体，其特征在于，所述第一弯曲部沿所述第一振动件的振动方向上的正投影的外边缘与所述固定部沿所述第一振动件的振动方向上的正投影的外边缘重合。
  8. 根据权利要求7所述的发声单体，其特征在于，所述盆架的外壁面内凹形成用于收容所述固定部的限位缺口。
  9. 根据权利要求8所述的发声单体，其特征在于，所述固定部的外表面与所述盆架的外壁面齐平。
  10. 一种扬声器箱，其特征在于，所述扬声器箱包括如权利要求1-9中任一项所述的发声单体。
PCT/CN2020/122344 2020-09-25 2020-10-21 一种发声单体及扬声器箱 WO2022062008A1 (zh)

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CN201797595U (zh) * 2010-09-01 2011-04-13 歌尔声学股份有限公司 动圈式电声转换器
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