WO2020140545A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020140545A1
WO2020140545A1 PCT/CN2019/110765 CN2019110765W WO2020140545A1 WO 2020140545 A1 WO2020140545 A1 WO 2020140545A1 CN 2019110765 W CN2019110765 W CN 2019110765W WO 2020140545 A1 WO2020140545 A1 WO 2020140545A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
basin
sound
generating device
voice coil
Prior art date
Application number
PCT/CN2019/110765
Other languages
English (en)
French (fr)
Inventor
肖波
令狐荣林
刘晓东
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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Publication date
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 WO2020140545A1 publication Critical patent/WO2020140545A1/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
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • 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

Definitions

  • the utility model relates to the technical field of electronic equipment, in particular to a sound-emitting device.
  • the sound-generating devices of the related technology include a sound membrane and a voice coil that drives the sound membrane to vibrate and sound.
  • Conventional miniature sound generators are mostly designed with a single sound membrane.
  • the voice coil is prone to sway in the process of forced vibration, thereby affecting the stability of the vibration system , Affect the sound quality; in addition, the dome and centering support piece in the related art are two different parts and need to be assembled separately.
  • the purpose of the utility model is to overcome the above technical problems and provide a sound-generating device with better acoustic performance.
  • the present invention provides a sound-generating device, including a basin holder with a storage space, a magnetic circuit system and a vibration system stored in the storage space, the vibration system includes a diaphragm and drives the diaphragm to vibrate Voice coil, the diaphragm includes an upper diaphragm fixed above the basin frame and a lower diaphragm disposed opposite to the upper diaphragm and accommodated in the accommodating space, the vibration system further includes a connection place The centering support of the upper and lower diaphragms, the centering support includes a connecting portion sandwiched between the upper diaphragm and the voice coil, and is arranged oppositely along the long axis direction from the connecting portion The two ends are respectively extended toward the magnetic circuit system and an extension portion is formed from the end of the extension portion bent away from the extension direction of the body portion, the extension portion is located in the magnetic circuit system and the Between the basin supports, the body portion includes a first fixing portion fixedly connected to the basin support,
  • the lower diaphragm includes a folded ring portion, an intermediate portion disposed inside the folded ring portion, and a second fixing portion disposed outside the folded ring portion; the second fixing portion is fixedly connected to the In the first fixing portion, the middle portion is fixed to the elastic portion.
  • the basin stand includes a sub-basin stand fixedly connected to the main basin stand, the upper diaphragm is held above the main basin stand, the first fixing part and the second The fixing part is interposed between the main basin shelf and the auxiliary basin shelf.
  • the elastic portion has a bent shape capable of providing elastic force.
  • the magnetic circuit system includes a main magnetic steel and auxiliary magnetic steel located on both sides of the main magnetic steel along the long axis direction, and the extension portion is located between the auxiliary magnetic steel and the basin frame.
  • the extending portion is disposed at a right angle between the connecting portion and the body portion.
  • connection part is adhesively fixed to the upper diaphragm and the voice coil, respectively.
  • the sound-generating device provided by the utility model adopts a three-dimensionally shaped centering support, the body part of which is fixedly connected to the lower diaphragm, the connecting part is connected to the upper diaphragm and the extension part is inserted into the auxiliary magnetic steel and the basin frame The gap between them, finally, the centering support connects the upper diaphragm and the lower diaphragm to form a joint vibration unit of the upper and lower diaphragms.
  • a vibration unit can improve the sway of the sound-generating device and improve the low-frequency performance of the sound-generating device
  • the connecting part replaces the dome, this structure can reduce the assembly process and materials, save costs and improve efficiency.
  • FIG. 1 is a structural diagram of a sound-generating device provided by the utility model
  • Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
  • FIG. 4 is an enlarged view at B in FIG. 3;
  • FIG. 5 is a structural diagram of a centering support provided by the utility model.
  • the present invention provides a sound-emitting device 100 including a basin frame 1 with a receiving space, a magnetic circuit system 2 fixed in the basin frame 1 and received in the receiving space and vibration System 3.
  • the magnetic circuit system 2 includes a yoke 21, a main magnet 22 fixed to the yoke 21, a sub magnet 23 disposed around the main magnet 22, and attached to the main magnet 22 and The main pole core 221 and the auxiliary pole core 231 of the auxiliary magnetic steel 23.
  • the secondary magnetic steel 23 may be a monolithic ring-shaped magnetic steel, or may be a plurality of bar-shaped magnetic steels arranged around the main magnetic steel 22.
  • the secondary magnetic steel 23 There are a total of four strip-shaped magnets surrounding the main magnet 22 and arranged symmetrically along the center.
  • the primary pole core 221 and the secondary pole core 231 are made of magnetically conductive materials, which are used for magnetic permeability, converging the magnetic field, and improving the magnetic induction performance of the product.
  • the secondary pole core 231 may be a circular pole core or Strip pole core.
  • the secondary pole core 231 is composed of two strip-shaped pole cores and a ring-shaped pole core, and is respectively pasted on the four secondary magnetic steels 23.
  • the basin stand 1 includes a main basin stand 11 and an auxiliary basin stand 12 connecting the main basin stand 11 and the yoke 21, and the auxiliary basin stand 12 is disposed below the main basin stand 11.
  • the vibration system 3 includes a diaphragm 31 and a voice coil 32 driving the diaphragm 31 to vibrate.
  • the diaphragm 31 includes an upper diaphragm 311 fixed above the main basin frame 11 and the upper diaphragm
  • the lower diaphragm 312 is spaced apart from each other at 311.
  • the vibration system 3 further includes a centering support 313, the centering support 313 includes a connecting portion 3131, from the opposite ends of the connecting portion 3131 toward the direction of the lower diaphragm 312
  • the extending portion 3132 and the body portion 3133 formed by bending and extending from the end of the extending portion 3132 away from the extending portion 3132.
  • the extending portion 3132 and the connecting portion 3131 and the body portion 3133 are disposed at right angles.
  • the elastic portion 31331 has a bent shape capable of providing elastic force.
  • the centering support 313 connects the upper diaphragm 311 and the lower diaphragm 312.
  • the connecting portion 3131 is fixedly connected to the upper diaphragm 311 and the connecting portion 3131 is interposed between the upper diaphragm 311 and the voice coil 32.
  • the connecting portions 3131 are respectively Adhesively fixed to the upper diaphragm 311 and the voice coil 32, wherein the connecting portion 3131 is adhesively fixed to the middle of the upper diaphragm 311, so that the connecting portion 3131 replaces the dome, which can be reduced Assembly procedures and materials save costs and improve efficiency.
  • the auxiliary magnetic steel 23 includes a first auxiliary magnetic steel 232 distributed along the long axis direction of the main magnetic steel 22 and a second auxiliary magnetic steel 233 distributed along the short axis direction of the main magnetic steel 22, A first gap 13 is formed between the first secondary magnetic steel 232 and the basin frame 1, and the extending portion 3132 is located in the first gap 13, such a structure can enable the extending portion 3132 to face the first secondary
  • the magnetic steel 232 forms an avoidance.
  • the lower diaphragm 312 is fixed below the body portion 3133, and the body portion 3133 includes a first fixing portion 31332 fixedly connected to the basin frame 1, and the voice coil 32 is away from the upper portion
  • the lower diaphragm 312 includes a folded ring portion 3121, and is disposed on the folded ring portion 3121 The inner middle portion 3122 and the second fixing portion 3123 provided outside the folding ring portion 3121.
  • One end of the lower diaphragm 312 is interposed between the basin frame 1 and the first fixing portion 31332, and the other end is connected to the elastic portion 31331, wherein the second fixing portion is fixedly connected to the 3123 and the The first fixing portion 31332, the intermediate portion 3122 is fixed to the elastic portion 31331, and the end of the extending portion 3132 is connected to the elastic portion 31331.
  • the sound-generating device provided by the utility model adopts a three-dimensionally shaped centering support, its body part is fixedly connected with the lower diaphragm, its connecting part is connected with the upper diaphragm and its extension part is inserted into the auxiliary magnetic steel and the basin The gap between the frames.
  • the centering support connects the upper diaphragm and the lower diaphragm to form a joint vibration unit of the upper and lower diaphragms.
  • a vibration unit can improve the sway of the sound-generating device and increase the low-frequency of the sound-generating device. Performance;
  • the connection part replaces the dome, this structure can reduce the assembly process and materials, save costs and improve efficiency.

Landscapes

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

Abstract

本实用新型提供一种发声器件，包括具有收容空间的盆架、收容于所述收容空间的磁路系统和振动系统，所述振动系统包括振膜、驱动所述振膜振动的音圈及定心支撑件，所述定心支撑件包括连接部、自所述连接部沿其长轴方向相对设置两端分别向靠近所述磁路系统方向延伸形成的延伸部及自所述延伸部末端朝远离所述延伸部方向弯折延伸的本体部，所述连接部夹设于所述振膜和所述音圈之间，所述延伸部位于所述磁路系统与所述盆架之间，所述本体部一端与所述盆架连接，另一端与所述音圈连接以支撑所述音圈。本实用新型提供的发声器件声学性能更佳。

Description

发声器件 技术领域
本实用新型涉及电子设备技术领域，尤其涉及一种发声器件。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能及其多样，其中之一便是高品质的音乐功能，而手机中的扬声器便是实现这个高品质音乐功能的必备条件之一。发声器件作为语音播放装置，其结构设计直接影响语音质量。
相关技术的发声器件包括音膜和驱动音膜振动发声的音圈，常规的微型发声器多为单音膜设计，音圈在受力振动过程中容易发生摇摆，从而影响振动系统的运动稳定性，影响音质；另外，相关技术中的球顶和定心支片为两个不同的部件并需要分别对其进行装配。
因此，有必要提供一种新的发声器件来解决上述问题。
 技术问题
本实用新型的目的是克服上述技术问题，提供一种声学性能更佳的发声器件。
 技术解决方案
为了实现上述目的，本实用新型提供一种发声器件，包括具有收容空间的盆架、收容于所述收容空间的磁路系统和振动系统，所述振动系统包括振膜和驱动所述振膜振动的音圈，所述振膜包括固定于所述盆架上方的上振膜和与所述上振膜相对间隔设置且收容于所述收容空间的下振膜，所述振动系统还包括连接所述上、下振膜的定心支撑件，所述定心支撑件包括夹设于所述上振膜和所述音圈之间的连接部、自所述连接部沿其长轴方向相对设置两端分别向靠近所述磁路系统方向延伸形成的延伸部及自所述延伸部末端朝远离所述延伸部方向弯折延伸的本体部，所述延伸部位于所述磁路系统与所述盆架之间，所述本体部包括与所述盆架固定连接的第一固定部、与所述音圈远离所述上振膜一端固定连接的支撑部以及连接所述第一固定部和所述支撑部的弹性部，所述延伸部末端与所述弹性部连接，所述下振膜固设于所述本体部远离所述上振膜的一侧。
优选的，所述下振膜包括折环部、设置于所述折环部内侧的中间部及设置于所述折环部外侧的第二固定部；所述第二固定部固接与所述第一固定部，所述中间部固接于所述弹性部。
优选的，所述盆架包括主盆架固接于所述主盆架下方的副盆架，所述上振膜固持于所述主盆架上方，所述第一固定部和所述第二固定部夹设于所述主盆架和所述副盆架之间。
优选的，所述弹性部呈能够提供弹性力的弯折状。
优选的，所述磁路系统包括主磁钢和位于所述主磁钢沿长轴方向两侧的副磁钢，所述延伸部位于所述副磁钢与所述盆架之间。
优选的，所述延伸部与所述连接部、所述本体部之间均呈直角设置。
优选的，所述连接部分别与所述上振膜和所述音圈粘接固定。
 有益效果
与相关技术相比，本实用新型提供的发声器件采用立体成型的定心支撑件，其本体部与下振膜固定连接，其连接部与上振膜连接且延伸部插入副磁钢与盆架之间的间隙，最终，所述定心支撑件连接了上振膜和下振膜，形成上、下振膜的联合振动单元，这样的振动单元可以改善发声器件的摇摆，提高发声器件低频性能；另外，连接部取代了球顶，这样的结构可以减少装配工序以及物料，节省成本，提高效率。
 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为本实用新型提供的发声器件的结构图；
图2为本实用新型提供的发声器件的分解图；
图3为图1中沿A-A线的剖视图；
图4为图3中B处的放大图；
图5为本实用新型提供的定心支撑件结构图。
 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。
请参阅图1和图2，本实用新型提供一种发声器件100，包括具有收容空间的盆架1、固设于所述盆架1并收容于所述收容空间内的磁路系统2和振动系统3。
所述磁路系统2包括磁轭21、固设于所述磁轭21的主磁钢22、环绕所述主磁钢22设置的副磁钢23及分别贴附于所述主磁钢22和所述副磁钢23的主极芯221和副极芯231。
其中，所述副磁钢23可以为一个整块的环状磁钢，也可以为多个环绕所述主磁钢22设置的条形磁钢，在本实施方式中，所述副磁钢23共有四个，为环绕所述主磁钢22且沿中心对称设置的条形磁钢。
所述主极芯221和所述副极芯231为导磁材料制成，用于起到导磁作用，汇聚磁场，提高产品的磁感应性能，所述副极芯231可为环状极芯或条形极芯。在本实施方式中，所述副极芯231由两个条形极芯和一个环状极芯组成并分别贴设在四个所述副磁钢23之上。
所述盆架1包括主盆架11和连接所述主盆架11和所述磁轭21的副盆架12且所述副盆架12设置于所述主盆架11下方。
所述振动系统3包括振膜31和驱动所述振膜31振动的音圈32，所述振膜31包括固接于所述主盆架11上方的上振膜311和与所述上振膜311相对间隔设置的下振膜312。
请参阅图2-5，所述振动系统3还包括定心支撑件313，所述定心支撑件313包括连接部3131、自所述连接部3131相对两端向靠近所述下振膜312方向延伸的延伸部3132和与自所述延伸部3132末端向远离所述延伸部3132方向弯折延伸形成的本体部3133。优选的，所述延伸部3132与所述连接部3131、所述本体部3133之间均呈直角设置。优选的，所述弹性部31331呈能够提供弹性力的弯折状。
所述定心支撑件313连接所述上振膜311和下振膜312。
具体的，所述连接部3131与所述上振膜311固定连接且所述连接部3131夹设于所述上振膜311与所述音圈32之间，优选的，所述连接部3131分别与所述上振膜311和所述音圈32粘接固定，其中，所述连接部3131与所述上振膜311的中部粘接固定，使所述连接部3131替代球顶，如此可以减少装配工序以及物料，节省成本，提高效率。
具体的，所述副磁钢23包括沿所述主磁钢22长轴方向分布的第一副磁钢232和沿所述主磁钢22短轴方向分布的第二副磁钢233，所述第一副磁钢232与所述盆架1之间形成第一间隙13，所述延伸部3132位于所述第一间隙13内，这样的结构可以使所述延伸部3132对所述第一副磁钢232形成避让。
具体的，所述下振膜312固接于所述本体部3133下方，所述本体部3133包括与所述盆架1固定连接的第一固定部31332、与所述音圈32远离所述上振膜311一端固定连接的支撑部31333以及连接所述第一固定部31332和所述支撑部31333的弹性部31331，所述下振膜312包括折环部3121、设置于所述折环部3121内侧的中间部3122及设置于所述折环部3121外侧的第二固定部3123。
所述下振膜312一端夹设于所述盆架1与所述第一固定部31332之间，另一端与所述弹性部31331连接，其中，所述第二固定部固接3123与所述第一固定部31332，所述中间部3122固接于所述弹性部31331，所述延伸部3132末端与所述弹性部31331连接。
与相关技术相比，本实用新型提供的发声器件采用立体成型的定心支撑件，其本体部与下振膜固定连接，其连接部与上振膜连接且其延伸部插入副磁钢与盆架之间的间隙，最终，所述定心支撑件连接了上振膜和下振膜，形成上、下振膜的联合振动单元，这样的振动单元可以改善发声器件的摇摆，提高发声器件低频性能；另外，连接部替代球顶，这样的结构可以减少装配工序以及物料，节省成本，提高效率。
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 (7)

  1. 一种发声器件，包括具有收容空间的盆架、收容于所述收容空间的磁路系统和振动系统，所述振动系统包括振膜和驱动所述振膜振动的音圈，所述振膜包括固定于所述盆架上方的上振膜和与所述上振膜相对间隔设置且收容于所述收容空间的下振膜，其特征在于，所述振动系统还包括连接所述上振膜和所述下振膜的定心支撑件，所述定心支撑件包括夹设于所述上振膜和所述音圈之间的连接部、自所述连接部沿其长轴方向相对设置两端分别向靠近所述磁路系统方向延伸形成的延伸部及自所述延伸部末端朝远离所述延伸部方向弯折延伸的本体部，所述延伸部位于所述磁路系统与所述盆架之间，所述本体部包括与所述盆架固定连接的第一固定部、与所述音圈远离所述上振膜一端固定连接的支撑部以及连接所述第一固定部和所述支撑部的弹性部，所述延伸部末端与所述弹性部连接，所述下振膜固设于所述本体部远离所述上振膜的一侧。
  2. 根据权利要求1所述的发声器件，其特征在于，所述下振膜包括折环部、设置于所述折环部内侧的中间部及设置于所述折环部外侧的第二固定部；所述第二固定部固接于所述第一固定部，所述中间部固接于所述弹性部。
  3. 根据权利要求2所述的发声器件，其特征在于，所述盆架包括主盆架固接于所述主盆架下方的副盆架，所述上振膜固接于所述主盆架上方，所述第一固定部和所述第二固定部夹设于所述主盆架和所述副盆架之间。
  4. 根据权利要求1所述的发声器件，其特征在于，所述弹性部呈能够提供弹性力的弯折状。
  5. 根据权利要求1所述的发声器件，其特征在于，所述磁路系统包括主磁钢和位于所述主磁钢沿长轴方向两侧的副磁钢，所述延伸部位于所述副磁钢与所述盆架之间。
  6. 根据权利要求1所述的发声器件，其特征在于，所述延伸部与所述连接部、所述本体部之间均呈直角设置。
  7. 根据权利要求1所述的发声器件，其特征在于，所述连接部分别与所述上振膜和所述音圈粘接固定。
PCT/CN2019/110765 2018-12-31 2019-10-12 发声器件 WO2020140545A1 (zh)

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