WO2021103124A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2021103124A1
WO2021103124A1 PCT/CN2019/123902 CN2019123902W WO2021103124A1 WO 2021103124 A1 WO2021103124 A1 WO 2021103124A1 CN 2019123902 W CN2019123902 W CN 2019123902W WO 2021103124 A1 WO2021103124 A1 WO 2021103124A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
basin frame
lower cover
cover plate
fixed
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PCT/CN2019/123902
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English (en)
French (fr)
Inventor
肖波
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 WO2021103124A1 publication Critical patent/WO2021103124A1/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 relates to the field of sound and electricity, in particular to a sound emitting device used in portable electronic products.
  • Related art sounding devices including a basin frame, a vibration system fixed on the basin frame, a magnetic circuit system that drives the vibration system to vibrate and produce sound, a steel ring fixed on the side of the basin frame away from the vibration system, and A lower cover plate covering one end of the steel ring away from the basin frame, the lower cover plate, the steel ring and the magnetic circuit system jointly enclose a rear cavity.
  • the lower cover plate and the steel ring are separate structures, the assembly process is complicated, and the steel ring and the basin frame are bonded by glue, and the lower cover plate and the steel ring Through glue bonding, the steel ring and the lower cover are easy to fall off when dropped, resulting in poor reliability.
  • the purpose of the utility model is to provide a sound device with better reliability.
  • the present invention provides a sound generating device, which includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound.
  • the pot frame is used for vibrating and sounding a diaphragm
  • the magnetic circuit system includes a magnetic bowl fixed to the pot frame and arranged opposite to the diaphragm, the diaphragm, the magnetic bowl and the pot frame Enclosed to form an inner cavity
  • the sounding device further includes a lower cover plate fixed on the side of the basin frame away from the vibration system, and the lower cover plate includes a bottom wall spaced apart from the basin frame and The peripheral wall of the bottom wall is bent and extended in a direction close to the basin frame, and the peripheral wall abuts and is fixed on the side of the basin frame away from the vibration system;
  • the basin frame jointly encloses a rear cavity communicating with the inner cavity.
  • the lower cover plate further includes a flange bent and extended from an end of the peripheral wall away from the bottom wall
  • the sound emitting device further includes a welding lug embedded in the basin frame, and the welding lug is located at On a side of the basin frame close to the lower cover plate, the flange and the welding lug are welded and fixed.
  • the basin frame includes a main body portion for fixing the diaphragm, and a supporting leg extending from a side of the main portion away from the diaphragm toward the lower cover plate, and the solder tabs are at least partially exposed. It is arranged on the side of the supporting leg close to the lower cover plate.
  • the magnetic bowl includes a supporting wall disposed opposite to the diaphragm and a side wall bent and extended from the edge of the supporting wall in the direction of the diaphragm, and the supporting wall is disposed on two adjacent ones. Between the supporting feet, the supporting wall correspondingly forms a gap for avoiding the supporting feet.
  • the supporting wall and the supporting foot are spaced apart, and the inner cavity is communicated with the rear cavity through the gap.
  • the magnetic circuit system is provided with a communicating portion through the magnetic circuit system, and the inner cavity is communicated with the rear cavity through the communicating portion.
  • the sound emitting device further includes a gas-permeable spacer attached to the magnetic circuit system, and the gas-permeable spacer covers the communicating portion.
  • the magnetic circuit system further includes a main magnetic steel fixed to the supporting wall on the side close to the diaphragm and directly opposite to the diaphragm, and the connecting portion sequentially penetrates the supporting wall and the main Magnetic steel, the gas-permeable spacer is fixed on the side of the main magnetic steel close to the diaphragm.
  • the basin frame further includes a blocking wall protruding from a side of the supporting leg away from the diaphragm, and the blocking wall extends along the outer periphery of the flange.
  • the flanges include a plurality of flanges and are arranged at intervals, and the number of the welding tabs corresponds to the number of the flanges one-to-one.
  • a leakage hole is formed through the lower cover plate.
  • the lower cover plate is an integrated structure, the molding and assembly process is simple and the reliability is better; the lower cover plate extends to form a flange, and the soldering sheet is embedded on the basin frame By performing laser electric welding on the welding lug and the flange, the lower cover plate is fixed to the basin frame to enclose the rear cavity, the fixing strength is high, and the reliability of the sound generating device is improved.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • Figure 2 is an exploded schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • Figure 3 is a partial exploded schematic view of another three-dimensional structure of the sound generating device of the present invention.
  • Fig. 4 is a sectional view taken along B-B in Fig. 1.
  • the present invention provides a sound generating device 100, which includes a basin frame 5, a vibration system 2 fixed to the basin frame 5, and a magnetic circuit system that drives the vibration system 2 to vibrate and produce sound 3.
  • the lower cover plate 4 fixed on the side of the basin frame 5 away from the vibration system 2, the upper cover plate 1 and the welding tabs 6 which cover the vibration system 2 away from the lower cover plate 4 , And ventilating spacer 7.
  • the upper cover 1, the basin frame 5 and the lower cover 4 jointly enclose an accommodation space (not shown), and the vibration system 2 and the magnetic circuit system 3 are accommodated in the accommodation space.
  • the vibration system 2 is used for vibrating and sounding, and includes a diaphragm 21 and a voice coil 22.
  • the diaphragm 21 is sandwiched between the upper cover 1 and the basin frame 5.
  • the magnetic circuit system 3 is used to drive the vibration system 2 to vibrate and produce sound.
  • the magnetic circuit system 3 includes a magnetic bowl 31 disposed opposite to the diaphragm 21, a main magnet 32, and a system that penetrates the magnetic circuit 3 ⁇ 33 ⁇ 3 ⁇ 33 ⁇ 3 of the communication section 33.
  • the magnetic bowl 31 includes a support wall 311 disposed opposite to the diaphragm and a side wall 312 bent and extended from the edge of the support wall 311 toward the diaphragm; the support wall 311 includes a shelter for shelter In the notch 3110 of the basin frame 5, the connecting portion 33 sequentially penetrates the main magnet 32 and the supporting wall 311 along the vibration direction of the diaphragm.
  • the lower cover 4, the basin frame 5 and the magnetic bowl 3 jointly enclose a rear cavity 8 for improving the low-frequency acoustic performance of the sound device 100.
  • the diaphragm 21, the magnetic bowl 31 and the basin frame 5 jointly enclose an inner cavity 9, and the inner cavity 9 communicates with the rear cavity 8 via the communicating portion 33.
  • the main magnet 32 is fixed on the side of the supporting wall 311 close to the diaphragm 21 and is arranged directly opposite to the diaphragm 21.
  • the lower cover 4 is an integrally formed structure. In this embodiment, it is integrally formed of a stainless steel material. The forming and assembly process is simple and the reliability is better.
  • the lower cover 4 includes a bottom wall 41 spaced apart from the basin frame 5, a peripheral wall 42 bent and extended from the peripheral edge of the bottom wall 41 in a direction close to the basin frame 5, and the peripheral wall 42 is away from the bottom wall.
  • One end of the bottom wall 41 is bent and extends with a plurality of flanges 43 spaced apart from each other, and a leakage hole 40 passing through the bottom wall 41, the leakage hole 40 communicates the rear cavity 8 with the outside; as shown in FIG.
  • the sides 43 are arranged at the corners of the square ring-shaped peripheral wall 42.
  • the number of the flanges 43 corresponds to the number of the welding tabs 6; the peripheral wall 42 is abutted and fixed to the basin frame 5. The side away from the vibration system 2.
  • the basin frame 5 plays a supporting and fixing role, and includes a main body 51 for fixing the diaphragm 21, and a supporting leg 52 extending from the main body 51 away from the diaphragm 21 toward the lower cover 4 , And a blocking wall 53 protruding from the side of the supporting leg 52 away from the diaphragm 21.
  • the supporting feet 52 there are four supporting feet 52, which are arranged spaced apart from the supporting wall 311.
  • the supporting wall 311 corresponding to the magnetic bowl 31 prevents the supporting feet 52 from forming four notches 3110; of course, the supporting feet
  • the number of 52 is not limited to four, and the number of soldering tabs 6 corresponds to one to one; the blocking wall 53 is formed to extend along the outer periphery of the flange 43 toward the lower cover 4 to protect the Flanging 43.
  • solder tabs 6 which are respectively embedded in the supporting leg 52 and at least partially exposed on the side of the supporting leg 52 close to the lower cover 4.
  • the flange 43 is fixed to the welding piece 6 by welding, and the blocking wall 53 protects the flange 43 and the welding piece 6.
  • the lower cover 4, the basin frame 5, and the magnetic circuit system 3 jointly enclose the rear cavity by laser spot welding of the welding tabs 6 and the flange 43, which has a more stable structure and a more reliable structure. high.
  • the air-permeable spacer 7 is attached to a side of the main magnetic steel 32 close to the diaphragm 21 and covers an end of the connecting portion 33 close to the diaphragm 21.
  • the lower cover plate is an integrated structure, the molding and assembly process is simple and the reliability is better; the lower cover plate extends to form a flange, and the soldering sheet is embedded on the basin frame By performing laser electric welding on the welding lug and the flange, the lower cover plate is fixed to the basin frame to enclose the rear cavity, the fixing strength is high, and the reliability of the sound generating device is improved.
  • the utility model provides an embodiment of the utility model described above, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the description and drawings of the utility model, or Directly or indirectly used in other related technical fields are included in the scope of patent protection of the utility model for the same reason.

Abstract

本实用新型提供了一种发声器件，其包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述振动系统包括固定于所述盆架且用于振动发声的振膜，所述磁路系统包括固定于所述盆架并与所述振膜相对设置的磁碗，所述振膜、所述磁碗及所述盆架围合形成内腔；所述发声器件还包括固定于所述盆架的远离所述振动系统一侧的下盖板，所述下盖板包括与所述盆架间隔相对的底壁和由所述底壁的周缘向靠近所述盆架的方向弯折延伸的周壁，所述周壁抵接固定于所述盆架远离所述振动系统的一侧；所述下盖板、所述磁碗和所述盆架共同围成与所述内腔连通的后腔。与相关技术相比，本实用新型的发声器件，可靠性更好。

Description

发声器件 技术领域
本实用新型涉及声电领域，尤其涉及一种运用于便携式电子产品的发声器件。
 背景技术
随着互联网时代的到来，移动终端设备的数量不断上升。而在移动设备中，手机无疑是最常见且最便携的移动终端设备。用于播放音乐等声音的发声器件被大量的运用到手机等移动终端设备中。
相关技术的发声器件，包括盆架、固定于所述盆架上的振动系统、驱动所述振动系统振动发声的磁路系统、固定于所述盆架远离所述振动系统一侧的钢环以及盖设于所述钢环远离所述盆架一端的下盖板，所述下盖板、所述钢环以及所述磁路系统共同围成后腔。
 技术问题
然而，相关技术中，所述下盖板和所述钢环为分体结构，装配工序复杂，且所述钢环与所述盆架通过胶水粘合，所述下盖板与所述钢环通过胶水粘合，跌落时，钢环以及下盖板容易脱落，造成可靠性差。
因此，有必要提供一种新的发声器件解决上述问题。
 技术解决方案
本实用新型的目的在于提供一种可靠性更好的发声器件。
为达到上述目的，本实用新型提供一种发声器件，其包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述振动系统包括固定于所述盆架且用于振动发声的振膜，所述磁路系统包括固定于所述盆架并与所述振膜相对设置的磁碗，所述振膜、所述磁碗及所述盆架围合形成内腔；所述发声器件还包括固定于所述盆架的远离所述振动系统一侧的下盖板，所述下盖板包括与所述盆架间隔相对的底壁和由所述底壁的周缘向靠近所述盆架的方向弯折延伸的周壁，所述周壁抵接固定于所述盆架远离所述振动系统的一侧；所述下盖板、所述磁碗和所述盆架共同围成与所述内腔连通的后腔。
优选的，所述下盖板还包括由所述周壁远离所述底壁的一端弯折延伸的翻边，所述发声器件还包括嵌设于所述盆架的焊片，所述焊片位于所述盆架的靠近所述下盖板的一侧，所述翻边与所述焊片焊接固定。
优选的，所述盆架包括固定所述振膜的主体部、以及自所述主体部远离所述振膜的一侧朝所述下盖板方向延伸的支撑脚，所述焊片至少部分露设于所述支撑脚靠近所述下盖板的一侧。
优选的，所述磁碗包括与所述振膜相对设置的支撑壁以及自所述支撑壁的边缘朝所述振膜方向弯折延伸的侧壁，所述支撑壁设置在相邻两所述支撑脚之间，所述支撑壁对应形成避让所述支撑脚的缺口。
优选的，所述支撑壁与所述支撑脚间隔设置，所述内腔经所述缺口与所述后腔连通。
优选的，磁路系统贯穿开设有连通部，所述内腔经所述连通部与所述后腔连通。
优选的，所述发声器件还包括贴设于所述磁路系统的透气隔离件，所述透气隔离件覆盖所述连通部。
优选的，所述磁路系统还包括固定于所述支撑壁靠近所述振膜一侧并与所述振膜正对的主磁钢，所述连通部依次贯穿所述支撑壁及所述主磁钢，所述透气隔离件固定于所述主磁钢靠近所述振膜的一侧。
优选的，所述盆架还包括凸设于所述支撑脚远离所述振膜一侧的阻挡壁，所述阻挡壁沿所述翻边的外周缘延伸。
优选的，所述翻边包括多个且相互间隔设置，所述焊片的数量与所述翻边的数量一一对应。
优选的，所述下盖板贯穿开设有泄露孔。
 有益效果
与相关技术相比，本实用新型的发声器件，所述下盖板为一体成型结构，成型以及装配工艺简单且可靠性更好；下盖板延伸形成翻边，并在盆架上嵌入焊片，通过所述焊片与所述翻边进行激光电焊，使得下盖板固定于盆架以围成后腔，固定强度高，提高了所述发声器件的可靠性。
 附图说明
为了更清楚地说明本实用新型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实用新型的一些实施例，对于本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为本实用新型发声器件的立体结构示意图；
图2为本实用新型发声器件的立体结构分解示意图；
图3为本实用新型发声器件的另一立体结构部分分解示意图；
图4为图1沿B-B的剖示图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型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实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本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，都属于本实用新型保护的范围。
请参考图1-4所示，本实用新型提供一种发声器件100，其包括盆架5、分别固定于所述盆架5的振动系统2和驱动所述振动系统2振动发声的磁路系统3、固定于所述盆架5远离所述振动系统2一侧的的下盖板4、盖设于所述振动系统2远离所述下盖板4一侧的上盖板1、焊片6、以及透气隔离件7。
所述上盖板1、所述盆架5与所述下盖板4共同围成收容空间（图未示），所述振动系统2与所述磁路系统3收容于所述收入空间。
所述振动系统2用于振动发声，包括振膜21和音圈22，所述振膜21夹设于所述上盖板1与所述盆架5之间。
所述磁路系统3用于驱动所述振动系统2进行振动发声，所述磁路系统3包括与所述振膜21相对设置的磁碗31、主磁钢32、以及贯穿所述磁路系统3的连通部33。
所述磁碗31包括与所述振膜相对设置的支撑壁311和自所述支撑壁311的边缘朝所述振膜方向弯折延伸的侧壁312；所述支撑壁311包括用于避让所述盆架5的缺口3110，所述连通部33沿所述振膜的振动方向依次贯穿所述主磁钢32及所述支撑壁311。
所述下盖板4、所述盆架5与所述磁碗3共同围成后腔8，用于改善发声器件100的低频声学性能。
所述振膜21、所述磁碗31及所述盆架5共同围合形成内腔9，所述内腔9经所述连通部33与所述后腔8连通。
所述主磁钢32固定于所述支撑壁311靠近所述振膜21的一侧，并与所述振膜21正对设置。
所述下盖板4为一体成型结构，本实施例中，为不锈钢材料一体成型，成型以及装配工艺简单且可靠性更好。
所述下盖板4包括与所述盆架5间隔设置的底壁41、由所述底壁41的周缘向靠近所述盆架5方向弯折延伸的周壁42、由所述周壁42远离所述底壁41的一端弯折延伸且相互间隔的多个翻边43以及贯穿所述底壁41的泄露孔40，所述泄露孔40将后腔8与外界连通；如图3所示，翻边43设置在方形环状周壁42的角部，当然所述翻边43的个数与所述焊片6的个数一一对应；所述周壁42抵接固定于所述所述盆架5远离所述振动系统2的一侧。
所述盆架5起支撑固定作用，包括固定所述振膜21的主体部51、自所述主体部51远离所述振膜21的一侧朝所述下盖板4方向延伸的支撑脚52、以及凸设于所述支撑脚52远离所述振膜21一侧的阻挡壁53。
本实施例中所述支撑脚52为4个，与所述支撑壁311间隔设置，对应所述磁碗31的支撑壁311为避让所述支撑脚52形成四个缺口3110；当然所述支撑脚52的个数并不只限制四个，所述焊片6的个数一一对应；所述阻挡壁53沿所述翻边43的外周缘向所述下盖板4延伸形成，以保护所述翻边43。
本实施例中，所述焊片6有4个，分别嵌设于所述支撑脚52且至少部分露设于所述支撑脚52靠近所述下盖板4的一侧。所述翻边43与所述焊片6焊接固定，所述阻挡壁53保护所述翻边43与所述焊片6。所述下盖板4、所述盆架5以及所述磁路系统3通过所述焊片6与所述翻边43的激光点焊共同围成所述后腔，结构更加稳定，可靠性更高。
所述透气隔离件7贴设于所述主磁钢32靠近所述振膜21的一侧，覆盖所述连通部33靠近振膜21的一端。
与相关技术相比，本实用新型的发声器件，所述下盖板为一体成型结构，成型以及装配工艺简单且可靠性更好；下盖板延伸形成翻边，并在盆架上嵌入焊片，通过所述焊片与所述翻边进行激光电焊，使得下盖板固定于盆架以围成后腔，固定强度高，提高了所述发声器件的可靠性。
本实用新型提供一种以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本实用新型的专利保护范围内。

Claims (11)

  1. 一种发声器件，其包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，其特征在于，所述振动系统包括固定于所述盆架且用于振动发声的振膜，所述磁路系统包括固定于所述盆架并与所述振膜相对设置的磁碗，所述振膜、所述磁碗及所述盆架围合形成内腔；所述发声器件还包括固定于所述盆架的远离所述振动系统一侧的下盖板，所述下盖板包括与所述盆架间隔相对的底壁和由所述底壁的周缘向靠近所述盆架的方向弯折延伸的周壁，所述周壁抵接固定于所述盆架远离所述振动系统的一侧；所述下盖板、所述磁碗和所述盆架共同围成与所述内腔连通的后腔。
  2. 根据权利要求1所述的发声器件，其特征在于，所述下盖板还包括由所述周壁远离所述底壁的一端弯折延伸的翻边，所述发声器件还包括嵌设于所述盆架的焊片，所述焊片位于所述盆架的靠近所述下盖板的一侧，所述翻边与所述焊片焊接固定。
  3. 根据权利要求2所述的发声器件，其特征在于，所述盆架包括固定所述振膜的主体部、以及自所述主体部远离所述振膜的一侧朝所述下盖板方向延伸的支撑脚，所述焊片至少部分露设于所述支撑脚靠近所述下盖板的一侧。
  4. 根据权利要求3所述的发声器件，其特征在于，所述磁碗包括与所述振膜相对设置的支撑壁以及自所述支撑壁的边缘朝所述振膜方向弯折延伸的侧壁，所述支撑壁设置在相邻两所述支撑脚之间，所述支撑壁对应形成避让所述支撑脚的缺口。
  5. 根据权利要求4所述的发声器件，其特征在于，所述支撑壁与所述支撑脚间隔设置，所述内腔经所述缺口与所述后腔连通。
  6. 根据权利要求4所述的发声器件，其特征在于，磁路系统贯穿开设有连通部，所述内腔经所述连通部与所述后腔连通。
  7. 根据权利要求5所述的发声器件，其特征在于，所述发声器件还包括贴设于所述磁路系统的透气隔离件，所述透气隔离件覆盖所述连通部。
  8. 根据权利要求7所述的发声器件，其特征在于，所述磁路系统还包括固定于所述支撑壁靠近所述振膜一侧并与所述振膜正对的主磁钢，所述连通部依次贯穿所述支撑壁及所述主磁钢，所述透气隔离件固定于所述主磁钢靠近所述振膜的一侧。
  9. 根据权利要求3所述的发声器件，其特征在于，所述盆架还包括凸设于所述支撑脚远离所述振膜一侧的阻挡壁，所述阻挡壁沿所述翻边的外周缘延伸。
  10. 根据权利要求2所述的发声器件，其特征在于，所述翻边包括多个且相互间隔设置，所述焊片的数量与所述翻边的数量一一对应。
  11. 根据权利要求1所述的发声器件，其特征在于，所述下盖板贯穿开设有泄露孔。
PCT/CN2019/123902 2019-11-25 2019-12-09 发声器件 WO2021103124A1 (zh)

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