WO2024113458A1 - 一种双面发声装置 - Google Patents

一种双面发声装置 Download PDF

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Publication number
WO2024113458A1
WO2024113458A1 PCT/CN2022/143973 CN2022143973W WO2024113458A1 WO 2024113458 A1 WO2024113458 A1 WO 2024113458A1 CN 2022143973 W CN2022143973 W CN 2022143973W WO 2024113458 A1 WO2024113458 A1 WO 2024113458A1
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WIPO (PCT)
Prior art keywords
diaphragm
peripheral wall
double
pole core
support leg
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PCT/CN2022/143973
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English (en)
French (fr)
Inventor
严绪东
邵涛
顾小江
Original Assignee
瑞声光电科技(常州)有限公司
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Application filed by 瑞声光电科技(常州)有限公司 filed Critical 瑞声光电科技(常州)有限公司
Priority to US18/330,329 priority Critical patent/US20240179469A1/en
Publication of WO2024113458A1 publication Critical patent/WO2024113458A1/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 invention relates to the field of electroacoustic conversion, and in particular to a double-sided sound-generating device.
  • the sound-emitting device includes a single-sided sound-emitting device and a double-sided sound-emitting device, wherein the sound pressure level of the double-sided sound-emitting device far exceeds the sound pressure level of the single-sided sound-emitting device and has better acoustic performance.
  • a double-sided sound-emitting device is usually simply stacked on the back of a single-sided sound-emitting device, resulting in a product that is too large.
  • the two single-sided sound-emitting devices each have an independent magnetic circuit system, resulting in high material costs.
  • the purpose of the present invention is to overcome the above technical problems and provide a double-sided sound-emitting device that can reduce product volume and reduce material costs.
  • the present invention provides a double-sided sound-generating device, which includes a basin frame with openings at both ends, a first vibration system arranged at the upper end opening of the basin frame, a second vibration system arranged at the lower end opening of the basin frame, and a magnetic circuit system arranged in the basin frame, wherein the first vibration system includes a first diaphragm and a first voice coil driving the first diaphragm to vibrate and produce sound, the second vibration system includes a second diaphragm and a second voice coil driving the second diaphragm to vibrate and produce sound, the magnetic circuit system includes an outer yoke fixed to the basin frame, a magnet portion arranged in the outer yoke, and a magnetic circuit system connected to the outer yoke.
  • the outer yoke and the non-magnetic connecting member of the magnet part includes a side wall arranged around the magnet part and a first flange portion extending from the upper end of the side wall close to the first diaphragm toward the magnet part, the magnet part includes an upper pole core close to the first diaphragm, a lower pole core close to the second diaphragm, and a magnetic steel sandwiched between the upper pole core and the lower pole core, the connecting member connects the first flange portion and the lower pole core, the first voice coil is inserted between the connecting member and the magnet part, and the second voice coil is inserted between the connecting member and the side wall.
  • the connecting piece is a plastic connecting piece.
  • the connecting piece, the outer magnetic yoke and the lower pole core are injection molded.
  • the basin frame includes an outer peripheral wall, an inner peripheral wall spaced apart from the outer peripheral wall, and a connecting beam connecting the outer peripheral wall and the inner peripheral wall, the inner peripheral wall is clamped around the side wall of the outer magnetic yoke, the first diaphragm is fixed to the upper end of the outer peripheral wall, and the second diaphragm is fixed to the lower end of the outer peripheral wall.
  • the first diaphragm includes a first spherical top, a first folded ring arranged around the first spherical top, and a first support leg extending from the first spherical top toward the direction close to the second diaphragm, the first support leg extends between two adjacent connecting beams
  • the second diaphragm includes a second spherical top, a second folded ring arranged around the second spherical top, and a second support leg extending from the second spherical top toward the direction close to the first diaphragm, the second support leg extends between two adjacent connecting beams, the first support leg and the second support leg are arranged alternately
  • the first vibration system also includes a first centering support piece connected between the outer peripheral wall and the first support leg, the first centering support piece is arranged between two adjacent connecting beams
  • the second vibration system also includes a second centering support piece connected between the outer peripheral wall and the second support leg, the second centering support piece is arranged between two
  • the outer yoke further includes a second flange portion extending from a lower end of the side wall close to the second diaphragm toward a direction away from the magnet portion, and the inner peripheral wall abuts against the second flange portion.
  • the first diaphragm and the second diaphragm have the same shape and size.
  • the double-sided sound-generating device of the present invention two vibration systems share a magnetic circuit system, and the structure is compact.
  • the magnetic circuit system may include only one magnetic steel, thereby reducing the product volume and the material cost.
  • FIG1 is a perspective view of a double-sided sound-emitting device of the present invention.
  • FIG2 is a perspective exploded view of the double-sided sound-emitting device shown in FIG1 ;
  • Fig. 3 is a cross-sectional view along line A-A in Fig. 1;
  • FIG. 4 is a three-dimensional view of the basin frame of the double-sided sound-emitting device shown in FIG. 1 .
  • the present invention provides a double-sided sound-emitting device 100, which includes a basin frame 1 with openings at both ends, a first vibration system 2 arranged at the upper opening of the basin frame 1, a second vibration system 3 arranged at the lower opening of the basin frame 1, and a magnetic circuit system 4 arranged in the basin frame 1.
  • the first vibration system 2 includes a first diaphragm 21 and a first voice coil 22 for driving the first diaphragm 21 to vibrate and produce sound
  • the second vibration system 3 includes a second diaphragm 31 and a second voice coil 32 for driving the second diaphragm 31 to vibrate and produce sound.
  • the first diaphragm 21 and the second diaphragm 31 have the same shape and size.
  • the magnetic circuit system 4 includes an outer yoke 41 fixed to the basin frame 1, a magnet part 42 arranged in the outer yoke 41, and a non-magnetic connector 43 connecting the outer yoke 41 and the magnet part 42.
  • the outer yoke 41 includes a side wall 411 arranged around the magnet part 42 and a first flange part 412 extending from the upper end of the side wall 411 close to the first diaphragm 21 to the magnet part 42.
  • the magnet part 42 includes an upper pole core 421 close to the first diaphragm 21, a lower pole core 422 close to the second diaphragm 31, and a magnetic steel 423 sandwiched between the upper pole core 421 and the lower pole core 422.
  • the connector 43 connects the first flange part 412 and the lower pole core 422.
  • the first voice coil 22 is inserted between the connector 43 and the magnet part 42
  • the second voice coil 32 is inserted between the connector 43 and the side wall 411.
  • the connecting member 43 is preferably a plastic connecting member, which facilitates injection molding of the connecting member 43 , the outer magnetic yoke 41 and the lower pole core 422 .
  • the basin frame 1 includes an outer peripheral wall 11, an inner peripheral wall 12 spaced apart from the outer peripheral wall 11, and a connecting beam 13 connecting the outer peripheral wall 11 and the inner peripheral wall 12, wherein the inner peripheral wall 12 is clamped around the side wall 411 of the outer magnetic yoke 41.
  • the first diaphragm 21 is fixed to the upper end of the outer peripheral wall 11, and the second diaphragm 31 is fixed to the lower end of the outer peripheral wall 11.
  • the first diaphragm 21 includes a first spherical top 211 , a first fold ring 212 disposed around the first spherical top 211 , and a first support leg 213 extending from the first spherical top 211 toward the second diaphragm 31 , and the first support leg 213 extends between two adjacent connecting beams 13 .
  • the second diaphragm 31 includes a second spherical top 311 , a second fold ring 312 disposed around the second spherical top 311 , and a second support leg 313 extending from the second spherical top 311 toward the first diaphragm 21 , and the second support leg 313 extends between two adjacent connecting beams 13 .
  • the first legs 213 and the second legs 313 are arranged alternately.
  • the first vibration system 2 also includes a first centering support plate 23 connected between the outer peripheral wall 11 and the first support leg 213, and the first centering support plate 23 is arranged between two adjacent connecting beams 13.
  • the second vibration system 3 also includes a second centering support plate 33 connected between the outer peripheral wall 11 and the second support leg 313, and the second centering support plate 33 is arranged between two adjacent connecting beams 13.
  • the outer yoke 41 further includes a second flange portion 413 extending from a lower end of the side wall 411 close to the second diaphragm 31 toward a direction away from the magnet portion 42 , and the inner peripheral wall 12 abuts against the second flange portion 413 .
  • the double-sided sound-generating device of the present invention two vibration systems share a magnetic circuit system, and the structure is compact.
  • the magnetic circuit system may include only one magnetic steel, thereby reducing the product volume and the material cost.

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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

一种双面发声装置(100)，其包括两端开口的盆架(1)、分别设置于盆架(1)的两端开口的第一振动系统(2)和第二振动系统(3)、以及设置于盆架(1)内的磁路系统(4)，磁路系统(4)包括固定于盆架(1)的外磁轭(41)、设置于外磁轭(41)内的磁体部(42)、以及连接外磁轭(41)和磁体部(42)的非导磁的连接件(43)，外磁轭(41)包括环绕磁体部(42)设置的侧壁(411)和自侧壁(411)的上端向靠近磁体部(42)的方向延伸的第一翻边部(412)，磁体部(42)包括上极芯(421)、下极芯(422)、以及夹设于上极芯(421)和下极芯(422)之间的磁钢(423)，连接件(43)连接第一翻边部(412)和下极芯(422)，第一振动系统(2)的音圈(22)插设于连接件(43)和磁体部(42)之间，第二振动系统(3)的音圈(32)插设于连接件(43)和侧壁(411)之间。有益效果: 减小了双面发声装置(100)的产品体积、降低了物料成本。

Description

一种双面发声装置
【 技术领域】
本发明涉及电声转换领域，尤其涉及一种双面发声装置。
【 背景技术】
发声装置包括单面发声装置和双面发声装置，其中，双面发声装置的声压级远超过单面发声装置的声压级，具有更优秀的声学性能。
目前，双面发声装置通常只是在一个单面发声装置的背面简单堆叠另一个单面发声装置，导致产品体积过大，此外，两个单面发声装置各自具有独立的磁路系统，造成物料成本居高不下。
因此，实有必要提供一种新的双面发声装置解决上述技术问题。
【 发明内容】
本发明的目的是克服上述技术问题，提供一种能够减小产品体积、降低物料成本的双面发声装置。
为了实现上述目的，本发明提供一种双面发声装置，其包括两端开口的盆架、设置于所述盆架的上端开口的第一振动系统、设置于所述盆架的下端开口的第二振动系统、以及设置于所述盆架内的磁路系统，所述第一振动系统包括第一振膜和驱动所述第一振膜振动发声的第一音圈，所述第二振动系统包括第二振膜和驱动所述第二振膜振动发声的第二音圈，所述磁路系统包括固定于所述盆架的外磁轭、设置于所述外磁轭内的磁体部、以及连接所述外磁轭和所述磁体部的非导磁的连接件，所述外磁轭包括环绕所述磁体部设置的侧壁和自所述侧壁靠近所述第一振膜的上端向靠近所述磁体部的方向延伸的第一翻边部，所述磁体部包括靠近所述第一振膜的上极芯、靠近所述第二振膜的下极芯、以及夹设于所述上极芯和所述下极芯之间的磁钢，所述连接件连接所述第一翻边部和所述下极芯，所述第一音圈插设于所述连接件和所述磁体部之间，所述第二音圈插设于所述连接件和所述侧壁之间。
优选的，所述连接件为塑料连接件。
优选的，所述连接件与所述外磁轭和所述下极芯注塑成型。
优选的，所述盆架包括外周壁、与所述外周壁间隔设置的内周壁、以及连接所述外周壁和所述内周壁的连接梁，所述内周壁围箍于所述外磁轭的侧壁，所述第一振膜固定于所述外周壁的上端，所述第二振膜固定于所述外周壁的下端。
优选的，所述第一振膜包括第一球顶、环绕所述第一球顶设置的第一折环、以及自所述第一球顶向靠近所述第二振膜的方向延伸的第一支脚，所述第一支脚延伸至相邻的两个所述连接梁之间，所述第二振膜包括第二球顶、环绕所述第二球顶设置的第二折环、以及自所述第二球顶向靠近所述第一振膜的方向延伸的第二支脚，所述第二支脚延伸至相邻的两个所述连接梁之间，所述第一支脚和所述第二支脚相互交错设置，所述第一振动系统还包括连接于所述外周壁和所述第一支脚之间的第一定心支片，所述第一定心支片设置于相邻的两个所述连接梁之间，所述第二振动系统还包括连接于所述外周壁和所述第二支脚之间的第二定心支片，所述第二定心支片设置于相邻的两个所述连接梁之间。
优选的，所述外磁轭还包括自所述侧壁靠近所述第二振膜的下端向远离所述磁体部的方向延伸的第二翻边部，所述内周壁抵接于所述第二翻边部。
优选的，所述第一振膜和所述第二振膜具有相同的形状和尺寸。
本发明的双面发声装置，两个振动系统共用一个磁路系统，结构紧凑，并且该磁路系统可以仅包括一个磁钢，减小了产品体积、降低了物料成本。
【 附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本发明领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明的双面发声装置的立体图；
图2为图1所示双面发声装置的立体分解图；
图3为沿图1中A-A线的剖面视图；
图4为图1所示双面发声装置的盆架的立体图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本发明领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1-4所示，本发明提供一种双面发声装置100，所述双面发声装置100包括两端开口的盆架1、设置于所述盆架1的上端开口的第一振动系统2、设置于所述盆架1的下端开口的第二振动系统3、以及设置于所述盆架1内的磁路系统4。
所述第一振动系统2包括第一振膜21和驱动所述第一振膜21振动发声的第一音圈22，所述第二振动系统3包括第二振膜31和驱动所述第二振膜31振动发声的第二音圈32。优选的，所述第一振膜21和所述第二振膜31具有相同的形状和尺寸。
所述磁路系统4包括固定于所述盆架1的外磁轭41、设置于所述外磁轭41内的磁体部42、以及连接所述外磁轭41和所述磁体部42的非导磁的连接件43，所述外磁轭41包括环绕所述磁体部42设置的侧壁411和自所述侧壁411靠近所述第一振膜21的上端向靠近所述磁体部42的方向延伸的第一翻边部412，所述磁体部42包括靠近所述第一振膜21的上极芯421、靠近所述第二振膜31的下极芯422、以及夹设于所述上极芯421和所述下极芯422之间的磁钢423，所述连接件43连接所述第一翻边部412和所述下极芯422。所述第一音圈22插设于所述连接件43和所述磁体部42之间，所述第二音圈32插设于所述连接件43和所述侧壁411之间。
所述连接件43优选为塑料连接件，方便所述连接件43与所述外磁轭41和所述下极芯422注塑成型。
所述盆架1包括外周壁11、与所述外周壁11间隔设置的内周壁12、以及连接所述外周壁11和所述内周壁12的连接梁13，所述内周壁12围箍于所述外磁轭41的侧壁411。所述第一振膜21固定于所述外周壁11的上端，所述第二振膜31固定于所述外周壁11的下端。
所述第一振膜21包括第一球顶211、环绕所述第一球顶211设置的第一折环212、以及自所述第一球顶211向靠近所述第二振膜31的方向延伸的第一支脚213，所述第一支脚213延伸至相邻的两个所述连接梁13之间。
所述第二振膜31包括第二球顶311、环绕所述第二球顶311设置的第二折环312、以及自所述第二球顶311向靠近所述第一振膜21的方向延伸的第二支脚313，所述第二支脚313延伸至相邻的两个所述连接梁13之间。
所述第一支脚213和所述第二支脚313相互交错设置。
所述第一振动系统2还包括连接于所述外周壁11和所述第一支脚213之间的第一定心支片23，所述第一定心支片23设置于相邻的两个所述连接梁13之间，所述第二振动系统3还包括连接于所述外周壁11和所述第二支脚313之间的第二定心支片33，所述第二定心支片33设置于相邻的两个所述连接梁13之间。
所述外磁轭41还包括自所述侧壁411靠近所述第二振膜31的下端向远离所述磁体部42的方向延伸的第二翻边部413，所述内周壁12抵接于所述第二翻边部413。
本发明的双面发声装置，两个振动系统共用一个磁路系统，结构紧凑，并且该磁路系统可以仅包括一个磁钢，减小了产品体积、降低了物料成本。
以上所述的仅是本发明的实施方式，在此应当指出，对于本发明领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (7)

  1. 一种双面发声装置，其包括两端开口的盆架、设置于所述盆架的上端开口的第一振动系统、设置于所述盆架的下端开口的第二振动系统、以及设置于所述盆架内的磁路系统，所述第一振动系统包括第一振膜和驱动所述第一振膜振动发声的第一音圈，所述第二振动系统包括第二振膜和驱动所述第二振膜振动发声的第二音圈，其特征在于，所述磁路系统包括固定于所述盆架的外磁轭、设置于所述外磁轭内的磁体部、以及连接所述外磁轭和所述磁体部的非导磁的连接件，所述外磁轭包括环绕所述磁体部设置的侧壁和自所述侧壁靠近所述第一振膜的上端向靠近所述磁体部的方向延伸的第一翻边部，所述磁体部包括靠近所述第一振膜的上极芯、靠近所述第二振膜的下极芯、以及夹设于所述上极芯和所述下极芯之间的磁钢，所述连接件连接所述第一翻边部和所述下极芯，所述第一音圈插设于所述连接件和所述磁体部之间，所述第二音圈插设于所述连接件和所述侧壁之间。
  2. 根据权利要求1所述的双面发声装置，其特征在于，所述连接件为塑料连接件。
  3. 根据权利要求2所述的双面发声装置，其特征在于，所述连接件与所述外磁轭和所述下极芯注塑成型。
  4. 根据权利要求1所述的双面发声装置，其特征在于，所述盆架包括外周壁、与所述外周壁间隔设置的内周壁、以及连接所述外周壁和所述内周壁的连接梁，所述内周壁围箍于所述外磁轭的侧壁，所述第一振膜固定于所述外周壁的上端，所述第二振膜固定于所述外周壁的下端。
  5. 根据权利要求4所述的双面发声装置，其特征在于，所述第一振膜包括第一球顶、环绕所述第一球顶设置的第一折环、以及自所述第一球顶向靠近所述第二振膜的方向延伸的第一支脚，所述第一支脚延伸至相邻的两个所述连接梁之间，所述第二振膜包括第二球顶、环绕所述第二球顶设置的第二折环、以及自所述第二球顶向靠近所述第一振膜的方向延伸的第二支脚，所述第二支脚延伸至相邻的两个所述连接梁之间，所述第一支脚和所述第二支脚相互交错设置，所述第一振动系统还包括连接于所述外周壁和所述第一支脚之间的第一定心支片，所述第一定心支片设置于相邻的两个所述连接梁之间，所述第二振动系统还包括连接于所述外周壁和所述第二支脚之间的第二定心支片，所述第二定心支片设置于相邻的两个所述连接梁之间。
  6. 根据权利要求4所述的双面发声装置，其特征在于，所述外磁轭还包括自所述侧壁靠近所述第二振膜的下端向远离所述磁体部的方向延伸的第二翻边部，所述内周壁抵接于所述第二翻边部。
  7. 根据权利要求1所述的双面发声装置，其特征在于，所述第一振膜和所述第二振膜具有相同的形状和尺寸。
PCT/CN2022/143973 2022-11-30 2022-12-30 一种双面发声装置 WO2024113458A1 (zh)

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CN117939373A (zh) * 2024-03-25 2024-04-26 瑞声光电科技(常州)有限公司 扬声器

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