WO2020181891A1 - 一种发声装置和电子设备 - Google Patents

一种发声装置和电子设备 Download PDF

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Publication number
WO2020181891A1
WO2020181891A1 PCT/CN2019/129727 CN2019129727W WO2020181891A1 WO 2020181891 A1 WO2020181891 A1 WO 2020181891A1 CN 2019129727 W CN2019129727 W CN 2019129727W WO 2020181891 A1 WO2020181891 A1 WO 2020181891A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
voice coil
circuit system
magnetic circuit
magnet
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Application number
PCT/CN2019/129727
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English (en)
French (fr)
Inventor
王兴龙
刘华伟
葛连山
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歌尔股份有限公司
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020181891A1 publication Critical patent/WO2020181891A1/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
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • 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
    • H04R9/02—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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention belongs to the technical field of acoustic-electric energy conversion. More specifically, the present invention relates to a sound generating device and electronic equipment.
  • Micro speakers are a kind of transducer device that converts electrical signals into acoustic signals. It produces sound by vibrating the diaphragm and resonating with the surrounding air.
  • Traditional micro speakers usually consist of a vibration system, a magnetic circuit system, and a support system; the vibration system usually includes a diaphragm, dome, voice coil, etc.
  • the magnetic circuit system usually includes a washer, a basin frame and several magnets, and the support system usually includes a housing and shrapnel And other inserts, etc.
  • An object of the present invention is to provide a new technical solution for a sound generating device.
  • a sound generating device which includes a magnetic circuit system and a first vibration system and a second vibration system respectively located on two sides of the magnetic circuit system;
  • the magnetic circuit system includes a central magnet in the middle, one side of the magnetic circuit system forms a first magnetic gap into which the first voice coil of the first vibration system extends, and the other side of the magnetic circuit system forms a supply A second magnetic gap into which the second voice coil of the second vibration system extends, where the first magnetic gap and the second magnetic gap are located outside the central magnet;
  • At least the first vibration system further includes a first diaphragm and a first centering support piece, and the first diaphragm and the first centering support piece are respectively fixedly connected to one end of the first voice coil.
  • the first magnetic gap and the second magnetic gap are alternately arranged, and the first magnetic gap is away from the central magnet.
  • the magnetic circuit system further includes a magnetically conductive yoke, a side magnet, a center washer and a side washer, and the magnetically conductive yoke includes a frame portion with a hollow area and a frame that is opposite to and higher than the hollow area.
  • the middle part of the frame body part there is a gap between the central part and the frame body part, and at least two opposite ends of the central part are fixedly connected to the frame body part by connecting walls;
  • the frame portion of the magnetic yoke is sequentially provided with side magnets and side washers, and the side washers and the central portion of the magnetic yoke have a first magnetic gap; the central portion of the magnetic yoke is arranged downwards in sequence A center magnet and a center washer, the center washer and the frame of the magnetic yoke form a second magnetic gap into which the second voice coil of the second vibration system extends, and the first magnetic gap and The second magnetic gap is located between the center magnet and the side magnets.
  • the magnetic circuit system includes a plurality of side magnets, the plurality of side magnets are symmetrically arranged on the outer side of the center magnet, and the first centering support plate prevents the side magnets from being connected to the first voice coil .
  • the magnetic circuit system is rectangular or round
  • the central magnet is a corresponding rectangle or round
  • the side magnets are arranged on the long axis of the magnetic circuit system
  • the first The centering support piece extends in the direction of the short axis of the magnetic circuit system and is connected to one end of the first voice coil.
  • the connecting wall is located on the short axis end of the magnetic circuit system, the connecting wall is connected to the inner edge of the frame portion, and the first voice coil is located outside the connecting wall.
  • the first centering support piece includes a support portion and a connecting portion, the support portion is connected to the first voice coil, the connecting portion is connected to the support portion, and the connecting portion includes a symmetrical Two connecting cantilevers are provided to support the first voice coil.
  • the first vibration system includes a plurality of first centering fins, and the plurality of first centering fins are symmetrically connected with the first voice coil.
  • it further includes a first housing assembly, and the edge washer, the first diaphragm and the first centering support piece of the first vibration system are fixed to the first housing assembly;
  • it further includes a second housing assembly, and the frame body portion of the magnetic yoke and the second vibration system are fixed to the second housing assembly.
  • the first housing assembly and the second housing assembly are respectively disposed on two sides of the magnetic circuit system, and the side magnets are exposed on the side facing away from the center magnet.
  • the second vibration system further includes a second diaphragm and a second centering support piece, and an end of the second voice coil facing away from the magnetic circuit system is connected to the second centering support piece, so The second diaphragm is connected to a side of the second centering branch away from the second voice coil.
  • the present invention also provides an electronic device, including the above-mentioned sound generating device with a housing provided in the housing.
  • Fig. 1 is a schematic diagram of the external structure of some embodiments of the present invention.
  • Fig. 2 is a schematic structural view of the A-A section in Fig. 1.
  • Fig. 3 is an enlarged schematic diagram of the partial structure at C in Fig. 2.
  • Fig. 4 is a schematic structural view of the B-B section in Fig. 2.
  • Figure 5 is an exploded schematic view of some embodiments of the present invention.
  • Fig. 6 is a schematic diagram of the structure of a magnetic yoke in some embodiments of the present invention.
  • FIG. 7 is another view of the structure of the magnetic yoke in some embodiments of the present invention.
  • Fig. 8 is a partial structural diagram of some embodiments of the present invention.
  • 1 magnetic circuit system 11 magnetic yoke, 12 center part, 13 frame body part, 14 center magnet, 15 side magnet, 16 center washer, 17 side washer, 18 first magnetic gap, 19 second magnet Gap, 2 first vibration system, 21 first voice coil, 22 first diaphragm, 23 first centering piece, 24 first reinforcement, 3 second vibration system, 31 second voice coil, 32 second Diaphragm, 33 second centering support piece, 34 second reinforcing part, 4 first housing assembly, 5 second housing assembly.
  • a sound generating device provided by the present invention, in some embodiments, referring to FIGS. 1 to 5, includes a magnetic circuit system 1, a first vibration system 2 and a second vibration system 3.
  • the first vibration system 2 and the second vibration system 3 are respectively located on the top surface and the bottom surface of the magnetic circuit system 1, and the magnetic circuit system 1 is used to drive the first vibration system 2 and the second vibration system 3 to vibrate and produce sound.
  • One side of the magnetic circuit system 1 forms a first magnetic gap 18 into which the first voice coil 21 of the first vibration system 2 extends.
  • the magnetic circuit system 1 can drive the first sound.
  • the ring 21 vibrates to drive the first vibration system 2 to vibrate and produce sound.
  • the other side of the magnetic circuit system 1 forms a second magnetic gap 19 into which the second voice coil 31 of the second vibration system 3 extends.
  • the magnetic circuit system 1 can drive the second The voice coil 31 vibrates to drive the second vibration system 3 to vibrate and produce sound.
  • the magnetic circuit system 1 includes a central magnet 14 in the middle, and a first magnetic gap 18 and a second magnetic gap 19 are located outside the central magnet 14.
  • At least the first vibration system 2 further includes a first diaphragm 22 and a first centering support piece 23.
  • the first diaphragm 22 and the first centering support piece 23 are respectively fixedly connected to one end of the first voice coil 21 so that the first Both the upper end and the lower end of the voice coil 21 are supported, so that the vibration balance of the first vibration system 2 is better, and the optimal acoustic performance can be achieved.
  • the first magnetic gap 18 is far away from the central magnet 14, so that the first magnetic gap 18 and the second magnetic gap 19 are misaligned, which avoids the first voice coil 21 and The second voice coil 31 hinders each other in the process of simultaneous vibration.
  • the vibration space of the first voice coil 21 and the second voice coil 31 can avoid each other.
  • the thickness of the magnetic circuit system can be made as thin as possible to reduce the sound generating device. The size to meet the requirements of miniaturization.
  • the magnetic circuit system 1 further includes a magnetic yoke 11, a side magnet 15, a center washer 16 and a side washer 17.
  • the magnetically permeable yoke 11 includes a central portion 12 at an intermediate position and a frame portion 13 surrounding the central portion 12.
  • the frame portion 13 has a hollow area formed by enclosure. As shown in FIG. 6, the central portion 12 is opposite to the hollow area and is higher than the frame portion 13. Those skilled in the art can understand that higher than is a relative concept. It can also be said that, as shown in FIG. 7, the central portion 12 If it is lower than the frame portion 13, then the upper and lower positions defined in the higher direction in this application also undergo a relative change.
  • the outline of the central portion 12 can match the outline of the hollow area of the frame portion 13, or it can be smaller than the outline of the hollow area of the frame portion 13 or larger than the outline of the hollow area of the frame portion 13. Not limited.
  • both ends of the central portion 12 may be fixedly connected to the frame portion 13 through connecting walls.
  • the magnetic yoke 11 can be processed and formed by an integral molding process, or the central portion 12 and the frame portion 13 can be fixedly connected by welding or riveting. This application is not limited to this, and can make the central portion 12 and the frame portion 13 are firmly connected.
  • the frame portion 13 of the magnetic yoke 11 is upwardly provided with side magnets 15 and side washers 17, and the side washers 17 and the central portion 12 of the magnetic yoke 11 form the first vibration system 2
  • the first magnetic gap 18 into which a voice coil 21 extends enables the magnetic circuit system 1 to drive the first voice coil 21 to vibrate to drive the first vibration system 2 to vibrate and produce sound when the first voice coil 21 is connected to an electrical signal.
  • the central part 12 of the magnetic yoke 11 is provided with a central magnet 14 and a central washer 16 in sequence downwards.
  • the central washer 16 and the frame part 13 of the magnetic yoke 11 form the second vibration system 3
  • the second magnetic gap 19 into which the second voice coil 31 extends enables the magnetic circuit system 1 to drive the second voice coil 31 to vibrate to drive the second vibration system 3 to vibrate and produce sound when the second voice coil 31 is connected to an electrical signal.
  • the structural design of the magnetic yoke of the present application can greatly simplify the structure of the magnetic circuit system in the double-sided speaker.
  • the magnetic yoke of the present application can not only function as a basin frame, but the center part and the frame body can also function as central magnets respectively.
  • the functions of the center washer and side washer on both sides simplifies the magnetic structure of the magnetic circuit system in the double-sided speaker, making the structure of the double-sided speaker simpler and relatively smaller in size.
  • the first magnetic gap 18 and the second magnetic gap 19 are located between the center magnet 14 and the side magnets 15 to provide sufficient space for the vibration of the voice coil and avoid magnetic leakage.
  • the first magnetic gap 18 is far away from the central magnet 14 so that the central portion 12 of the magnetic yoke 11 matches the hollow area of the frame portion 13 as much as possible, reducing cutting. Reduce the waste of materials in the processing process such as integral molding.
  • the first magnetic gap 18 is far away from the center magnet 14, the size of the center portion 12 and the frame portion 13 will inevitably be reduced, and the size of the center washers 16 and side washers 17 will be increased , Resulting in increased material loss.
  • the first magnetic gap 18 may also be close to the central magnet 14, which is not limited in the present application.
  • the magnetic circuit system 1 includes a plurality of side magnets 15, and the plurality of side magnets 15 are symmetrically arranged around the center magnet 14, so that the first voice coil 21 and the second voice coil 31 The force is uniform during vibration, providing better vibration performance. There are gaps between adjacent side magnets 15, and the first centering support piece 23 can avoid the side magnets 15 and connect with the first voice coil 21 located outside by using these gaps.
  • the magnetic circuit system 1 is rectangular or waisted, and the central magnet 14 is correspondingly rectangular or waisted.
  • the side magnet 15 is arranged on the side of the long axis of the magnetic circuit system 1, so that the magnetic gap is located on the side of the long axis, and the magnetic gap is set on the side of the long axis, relatively more magnetic gaps can be obtained to meet the requirements of magnetic performance .
  • the long axis end of the central portion 12 can be flush with the inner side of the long axis end of the frame portion 13 up and down.
  • the first voice coil 21 and the second voice coil 31 are located in the magnetic circuit system 1, the long side magnetic gap of the voice coil can be smaller , The voice coil can obtain higher magnetic performance, making the product performance better.
  • the first centering support piece 23 extends in the direction of the minor axis of the magnetic circuit system 1 and is connected to one end of the first voice coil 21, lacking a side
  • the obstruction of the magnet enables the first centering support piece 23 to be connected to the bottom end of the first voice coil 21, which provides installation and movement space for the vibration of the first centering support piece 23.
  • the connecting wall is located on the short axis end of the magnetic circuit system 1, the connecting wall is connected to the inner edge of the frame portion 13, and the first voice coil 21 Located on the outer side of the connecting wall makes the internal structure of the present application more optimized and reduces the structure on the outer side of the first voice coil 21 to provide sufficient installation space for the first centering brace 23.
  • the first vibration system 2 includes a plurality of first centering fins 23, and the plurality of first centering fins 23 are symmetrically connected with the first voice coil 21 to provide a The balanced force of a voice coil 21 ensures its acoustic performance.
  • the first centering support piece 23 includes a supporting portion and a connecting portion, the supporting portion is connected to the first voice coil 21, and the connecting portion is connected to the supporting portion And the connecting portion includes two connecting cantilevers symmetrically arranged to support the first voice coil 21 to further provide a balanced force for the first voice coil 21 to ensure its acoustic performance.
  • FIGS. 1 to 8 it further includes a first housing assembly 4, the edge washer 17, and the first diaphragm 22 and the first centering support piece 23 of the first vibration system 2 It is fixed to the first housing assembly 4, and the first housing assembly 4 is used to support the first vibration assembly 2 and maintain a fixed connection with the magnetic circuit system 1.
  • Or/and further includes a second housing assembly 5, the frame portion 13 of the magnetic yoke 11 and the second vibration system 3 are fixed to the second housing assembly 5 for supporting the second vibration assembly 3 and maintain a fixed connection with the magnetic circuit system 1.
  • the fixed connection relationship with the first housing assembly 4 and the second housing assembly 5 may be achieved through injection molding and bonding processes. Those skilled in the art can make selections according to their needs. not limited.
  • the first housing assembly 4 and the second housing assembly 5 may be respectively arranged on both sides of the magnetic circuit system 1, and the magnetic circuit system 1 is fixed to form a whole.
  • the side magnet 15 away from the center magnet 14 is exposed to reduce the volume of the housing of the sound generating device.
  • the side of the side magnet 15 away from the center magnet 14 may be flush with the outer wall of the first housing assembly 4 or/and the second housing assembly 5 to reduce the overall size of the present application.
  • the second vibration system 3 further includes a second diaphragm 32 and a second centering support piece 33'.
  • the end of the second voice coil 31 away from the magnetic circuit system 1 is connected to the second centering branch 33, and the second diaphragm 32 is connected to the second centering branch 33 away from the first One side of the two voice coil 31.
  • the first vibration system 2 of the present application fixes the upper and lower surfaces of the first voice coil 21 through the first diaphragm 22 and the first centering support piece 23, so that the first vibration
  • the vibration balance of the system 2 is better;
  • the second vibration system 3 can achieve better balance through the multi-leg structure design of the complete and larger second centering support piece 33 bonded to the second diaphragm 22
  • the anti-sway polarization ability is better when the two vibration systems are working simultaneously, and the optimal acoustic performance can be achieved when the product is applied.
  • the first voice coil 21 when a circuit is provided on the first centering support piece 23, the first voice coil 21 can also be electrically connected to the outside through the first centering support piece 23 to transmit electrical signals.
  • the second voice coil 31 when a circuit is provided on the second centering branch 33, the second voice coil 31 can also be electrically connected to the outside through the second centering branch 33.
  • the first vibration system 2 may further include a first reinforcement part 24 arranged in the middle of the first diaphragm 22 for improving the acoustic performance of the first vibration system 2.
  • the second vibration system 3 also includes a second reinforcement part 34 arranged in the middle of the second diaphragm 32 to improve the acoustic performance of the second vibration system 3.
  • the present application also provides an electronic device, which includes a housing and the above-mentioned sound emitting device provided in the housing.
  • the electronic device may be an electronic device such as a laptop computer, a mobile phone, and a tablet computer.

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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

本发明涉及一种发声装置和电子设备。发声装置包括磁路系统以及分别位于所述磁路系统两面的第一振动系统和第二振动系统；所述磁路系统包括位于中间的中心磁铁，所述磁路系统的一面形成供所述第一振动系统的第一音圈伸入的第一磁间隙，所述磁路系统的另一面形成供所述第二振动系统的第二音圈伸入的第二磁间隙，所述第一磁间隙和所述第二磁间隙位于所述中心磁铁的外侧，所述第一磁间隙远离所述中心磁铁；至少所述第一振动系统还包括第一振膜和第一定心支片，所述第一振膜和所述第一定心支片分别与所述第一音圈的一端固定连接。

Description

一种发声装置和电子设备 技术领域
本发明属于声电换能技术领域，更具体地，本发明涉及一种发声装置和电子设备。
背景技术
微型扬声器是一种把电信号转变为声信号的换能器件，通过膜片振动并与周围的空气产生共振而发出声音。传统微型扬声器通常由振动系统、磁路系统、支撑系统组成；振动系统通常包含振膜、dome、音圈等，磁路系统通常包含华司、盆架及若干磁铁，支撑系统通常包含外壳、弹片及其他嵌件等。
在现有技术中，为满足市场端声学性能提升的需求，普遍通过增大产品振动面积和工作振幅的方式进行性能提升；但振动面积增大会导致产品尺寸增大，影响整机端应用，而工作振幅进一步增大会带来各方面品质问题。
发明内容
本发明的一个目的是提供一种发声装置的新技术方案。
根据本发明的一个方面，提供一种发声装置，包括磁路系统以及分别位于所述磁路系统两面的第一振动系统和第二振动系统；
所述磁路系统包括位于中间的中心磁铁，所述磁路系统的一面形成供所述第一振动系统的第一音圈伸入的第一磁间隙，所述磁路系统的另一面形成供所述第二振动系统的第二音圈伸入的第二磁间隙，所述第一磁间隙和所述第二磁间隙位于所述中心磁铁的外侧；
至少所述第一振动系统还包括第一振膜和第一定心支片，所述第一振膜和所述第一定心支片分别与所述第一音圈的一端固定连接。
可选的，所述第一磁间隙与所述第二磁间隙交错设置，所述第一磁间隙远离所述中心磁铁。
可选的，所述磁路系统还包括导磁轭、边磁铁、中心华司和边华司，所述导磁轭包括具有中空区域的框体部和与所述中空区域相对且高于所述框体部的中间部，所述中心部与所述框体部之间具有间隙，所述中心部上至少相背离的两端通过连接壁固定连接在所述框体部上；
所述导磁轭的框体部向上依次设置边磁铁和边华司，所述边华司与所述导磁轭的中心部第一磁间隙；所述导磁轭的中心部向下依次设置中心磁铁和中心华司，所述中心华司与所述导磁轭的框体部形成供所述第二振动系统的第二音圈伸入的第二磁间隙，所述第一磁间隙和所述第二磁间隙位于所述中心磁铁和所述边磁铁之间。
可选的，所述磁路系统包括多块边磁铁，多块边磁铁对称设置在所述中心磁铁的外侧，所述第一定心支片避让所述边磁铁与所述第一音圈连接。
可选的，所述磁路系统为长方形或腰圆形，所述中心磁铁为相应的长方形或腰圆形，所述边磁铁设置在所述磁路系统的长轴边上，所述第一定心支片向所述磁路系统的短轴边方向伸出与所述第一音圈的一端连接。
可选的，所述连接壁位于所述磁路系统的短轴端上，所述连接壁连接在所述框体部的内边沿，所述第一音圈位于所述连接壁的外侧。
可选的，所述第一定心支片包括支撑部与连接部，所述支撑部与所述第一音圈连接，所述连接部与所述支撑部连接，且所述连接部包括对称设置的两条连接悬臂以支撑所述第一音圈。
可选的，所述第一振动系统包括多个第一定心支片，多个第一定心支片与所述第一音圈对称连接。
可选的，还包括第一壳体组件，所述边华司以及所述第一振动系统的第一振膜和第一定心支片固持于所述第一壳体组件；
或/和，还包括第二壳体组件，所述导磁轭的框体部以及所述第二振动系统固持于所述第二壳体组件。
可选的，所述第一壳体组件和第二壳体组件分别设置在所述磁路系统的两面，所述边磁铁背离所述中心磁铁的一侧外露。
可选的，所述第二振动系统还包括第二振膜和第二定心支片，所述第二音圈背离所述磁路系统的一端与所述第二定心支片连接，所述第二振膜连接在所述第二定心支片背离所述第二音圈的一侧。
根据本发明的另一个方面，本发明还提供了一种电子设备，包括外壳设置在所述外壳内上述的发声装置。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本发明的实施例，并且连同说明书一起用于解释本发明的原理。
图1是本发明一些实施例的外形结构示意图。
图2是图1中A-A剖面的结构示意图。
图3是图2中C处的局部结构放大示意图。
图4是图2中B-B剖面的结构示意图。
图5是本发明一些实施例的结构爆炸示意图。
图6是本发明一些实施例中导磁轭的结构示意图。
图7是本发明一些实施例中导磁轭的另一视角结构示意图。
图8是本发明一些实施例的局部结构示意图。
图中：1磁路系统，11导磁轭，12中心部，13框体部，14中心磁铁，15边磁铁，16中心华司，17边华司，18第一磁间隙，19第二磁间隙，2第一振动系统，21第一音圈，22第一振膜，23第一定心支片，24第一补强部，3第二振动系统，31第二音圈，32第二振膜，33第二定心支片，34第二补强部，4第一壳体组件，5第二壳体组件。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术和设备可能不作详细讨论，但在适当情况下，所述技术和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
根据本发明的一个方面，本发明提供的一种发声装置，在一些实施例中，参考图1至图5，包括磁路系统1、第一振动系统2和第二振动系统3。第一振动系统2和第二振动系统3分别位于磁路系统1的顶面和底面，磁路系统1用于驱动第一振动系统2和第二振动系统3振动发声。
磁路系统1的一面形成供第一振动系统2的第一音圈21伸入的第一磁间隙18，在第一音圈21接入电信号时，使得磁路系统1能够驱动第一音圈21振动来带动第一振动系统2振动发声。
磁路系统1的另一面形成供第二振动系统3的第二音圈31伸入的第二磁间隙19，在第二音圈31接入电信号时，使得磁路系统1能够驱动第二音圈31振动来带动第二振动系统3振动发声。
磁路系统1包括位于中间的中心磁铁14，第一磁间隙18和第二磁间隙19位于中心磁铁14的外侧。至少第一振动系统2还包括第一振膜22和第一定心支片23，第一振膜22和第一定心支片23分别与第一音圈21的一端固定连接，使得第一音圈21的上端和下端都得到支撑，使得第一振动系统2的振动平衡性更好，能够达到最优化的声学表现。
本申请的结构设计，使得本申请最少只需要一套磁路系统，就能够驱动两套振动系统振动发声，并且可以在相对较小尺寸、振幅下，获得更高的声学性能；小尺寸适应不同整机机型的结构，应用范围更广；小振幅可 降低产品可靠性风险。此外，传统扬声器工作时会导致整机出现在振动现象，严重影响整机体验；而本专利所述双向发声装置，由于两侧振动系统反向振动，可以显著抵消整机振动问题。在使用时，可以给第一音圈和第二音圈输入相同或不同的电信号，以获得不同的声学性能。在双面扬声器中能够对音圈的两端同时支撑，使得至少一个振动系统的振动平衡性更好，减少偏振对声学性能造成的影响。
在一些实施例中，参考图1至图5，所述第一磁间隙18远离所述中心磁铁14，使得第一磁间隙18与第二磁间隙19错位设置，避免了第一音圈21和第二音圈31在同时振动的过程中发生相互阻碍的情况发生。同时，由于交错设置，使得第一音圈21和第二音圈31的振动空间能够相互避让，在满足使用要求的前提下，能够使得磁路系统的厚度尽可能的轻薄，以减小发声装置的尺寸来满足小型化的要求。
在一些实施例中，参考图1至图8，所述磁路系统1还包括导磁轭11、边磁铁15、中心华司16和边华司17。所述导磁轭11包括位于中间位置的中心部12和围绕中心部12的框体部13。框体部13具有围合形成的中空区域。如图6中所示，中心部12与中空区域相对且高于所述框体部13，本领域技术人员可以理解，高于是相对概念，也可以说，如图7中所示，中心部12是低于框体部13的，那么本申请中以高于方向定义的上下方位也发生相对的变换。
在水平投影上，中心部12的外形轮廓可以与框体部13的中空区域轮廓相吻合，也可以小于框体部13的中空区域轮廓或大于框体部13的中空区域轮廓，本申请对此并不限制。
所述中心部12与所述框体部13之间具有间隙。所述中心部12上至少相背离的两端通过连接壁固定连接在所述框体部13上。中心部12至少相背离的两端与框体部13固定连接，以保持导磁轭11的整体性和结构的稳固性。参考图6和图7，中心部12的两端可以通过连接壁与框体部13固定连接。导磁轭11可以使通过一体成型工艺加工成型的，也可以是将中心部12、框体部13通过焊接或铆接等连接工艺固定连接在一起，本申请对此并不限制，能够使得中心部12和框体部13稳固连接即可。
参考图4和图8，导磁轭11的框体部13向上依次设置边磁铁15和边华司17，边华司17与导磁轭11的中心部12形成供第一振动系统2的第一音圈21伸入的第一磁间隙18，在第一音圈21接入电信号时，使得磁路系统1能够驱动第一音圈21振动来带动第一振动系统2振动发声。
参考图4和图8，导磁轭11的中心部12向下依次设置中心磁铁14和中心华司16，中心华司16与导磁轭11的框体部13形成供第二振动系统3的第二音圈31伸入的第二磁间隙19，在第二音圈31接入电信号时，使得磁路系统1能够驱动第二音圈31振动来带动第二振动系统3振动发声。
本申请导磁轭的结构设计能够大大的简化双面扬声器中磁路系统的结构，本申请的导磁轭既能够起到盆架的功能，中心部和框体部还能够分别起到中心磁铁两面的中心华司和边华司的功能，简化了双面扬声器中磁路系统的导磁结构，使的双面扬声器的结构更加简单，尺寸相对能够做到更小。
在一些实施例中，参考图4和图8，第一磁间隙18和第二磁间隙19位于中心磁铁14和边磁铁15之间，为音圈的振动提供足够的空间并避免磁泄露。
在一些实施例中，参考图4和图8，第一磁间隙18远离中心磁铁14能够使得导磁轭11的中心部12尽可能的与框体部13的中空区域相吻合，减少裁切，减少在一体成型等加工工艺的加工过程中的对材料浪费。导磁轭11采用一体成型工艺加工时，若第一磁间隙18远离中心磁铁14，则势必会减小中心部12和框体部13的尺寸，增加中心华司16和边华司17的尺寸，导致材料损耗增加。当然，在一些其他的实施例中，第一磁间隙18也可以靠近中心磁铁14，本申请对此并不限制。
在一些实施例中，参考图1至图5，磁路系统1包括多个边磁铁15，多个边磁铁15对称设置在中心磁铁14的周围，使得第一音圈21和第二音圈31在振动时受力均匀，提供更好的振动性能。相邻的边磁铁15之间存在空隙，所述第一定心支片23利用这些空隙能够避让所述边磁铁15并与位于外侧的所述第一音圈21连接。
在一些实施例中，参考图1至图5，所述磁路系统1为长方形或腰圆 形，所述中心磁铁14为相应的长方形或腰圆形。所述边磁铁15设置在所述磁路系统1的长轴边上，使得磁间隙位于长轴侧，将磁间隙设置在长轴边侧，相对能够获得更多磁间隙来满足磁性能的要求。中心部12的长轴端可以与框体部13的长轴端的内侧上下平齐，第一音圈21和第二音圈31位于磁路系统1内时，音圈长边磁间隙可以更小，音圈可获得更高的磁性能，使得产品性能更好。
在一些实施例中，参考图1至图5，所述第一定心支片23向所述磁路系统1的短轴边方向伸出与所述第一音圈21的一端连接，缺少边磁铁的阻碍，使得第一定心支片23能够与第一音圈21的底端连接，为第一定心支片23的振动提供安装和活动空间。
在一些实施例中，参考图3，所述连接壁位于所述磁路系统1的短轴端上，所述连接壁连接在所述框体部13的内边沿，所述第一音圈21位于所述连接壁的外侧，使得本申请内部结构更叫优化，减少第一音圈21外侧的结构来为第一定心支片23提供足够的安装空间。
在一些实施例中，参考图5，所述第一振动系统2包括多个第一定心支片23，多个第一定心支片23与所述第一音圈21对称连接，提供第一音圈21的均衡受力，保证其声学性能。
在一些实施例中，参考图5，所述第一定心支片23包括支撑部与连接部，所述支撑部与所述第一音圈21连接，所述连接部与所述支撑部连接，且所述连接部包括对称设置的两条连接悬臂以支撑所述第一音圈21，以进一步的为第一音圈21提供均衡受力，保证其声学性能。
在一些实施例中，参考图1至图8，还包括第一壳体组件4，所述边华司17以及所述第一振动系统2的第一振膜22和第一定心支片23固持于所述第一壳体组件4，第一壳体组件4用于支撑第一振动组件2和与磁路系统1保持固定连接。
或/和，还包括第二壳体组件5，所述导磁轭11的框体部13以及所述第二振动系统3固持于所述第二壳体组件5，用于支撑第二振动组件3和与磁路系统1保持固定连接。
在一些实施例中，可以是通过注塑成型、粘接工艺实现与第一壳体组 件4和第二壳体组件5的固定连接关系，本领域技术人员可以根据需要进行选择，本申请对此并不限制。
在一些实施例中，参考图1至图5，第一壳体组件4和第二壳体组件5可以分别设置在磁路系统1的两面，通过磁路系统1固定形成整体。边磁铁15背离中心磁铁14的一侧外露，减少发声装置的壳体的体积。边磁铁15背离中心磁铁14的一侧可以与第一壳体组件4或/和第二壳体组件5的外壁平齐，以减少本申请的外形尺寸。
在一些实施例中，参考图1至图5，所述第二振动系统3还包括第二振膜32和第二定心支片33,。所述第二音圈31背离所述磁路系统1的一端与所述第二定心支片33连接，所述第二振膜32连接在所述第二定心支片33背离所述第二音圈31的一侧。
在一些实施例中，参考图2至图5，本申请的第一振动系统2，通过第一振膜22、第一定心支片23固定第一音圈21的上下面，使第一振动系统2振动平衡性更好；第二振动系统3可以通过与第二振膜22粘接的完整较大的第二定心支片33的多腿结构设计，带来更优的平衡性，使得本申请在两个振动系统同时工作时抗摇摆偏振能力更好，产品应用时可达到最优化声学表现。
在一些实施例中，在第一定心支片23上设置电路时，第一音圈21还能够通过第一定心支片23与外部电连接，以传递电信号。在第二定心支片33上设置电路时，第二音圈31还能够通过第二定心支片33与外部电连接。
在一些实施例中，第一振动系统2还可以包括设置在第一振膜22中间位置的第一补强部24，用于提高第一振动系统2的声学性能。第二振动系统3还包括设置在第二振膜32中间位置的第二补强部34，用于提高第二振动系统3的声学性能。
根据本申请的另一个方面，本申请还提供一种电子设备，该电子设备包括外壳和设置在外壳内的上述发声装置。
在一些实施例中，电子设备可以使笔记本电脑、手机，平板电脑等电子设备。
虽然已经通过示例对本发明的一些特定实施例进行了详细说明，但是 本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (12)

  1. 一种发声装置，其特征在于，包括磁路系统以及分别位于所述磁路系统两面的第一振动系统和第二振动系统；
    所述磁路系统包括位于中间的中心磁铁，所述磁路系统的一面形成供所述第一振动系统的第一音圈伸入的第一磁间隙，所述磁路系统的另一面形成供所述第二振动系统的第二音圈伸入的第二磁间隙，所述第一磁间隙和所述第二磁间隙位于所述中心磁铁的外侧；
    至少所述第一振动系统还包括第一振膜和第一定心支片，所述第一振膜和所述第一定心支片分别与所述第一音圈的一端固定连接。
  2. 根据权利要求1所述的发声装置，其特征在于，所述第一磁间隙与所述第二磁间隙交错设置，所述第一磁间隙远离所述中心磁铁。
  3. 根据权利要求1所述的发声装置，其特征在于，所述磁路系统还包括导磁轭、边磁铁、中心华司和边华司，所述导磁轭包括具有中空区域的框体部和与所述中空区域相对且高于所述框体部的中间部，所述中心部与所述框体部之间具有间隙，所述中心部上至少相背离的两端通过连接壁固定连接在所述框体部上；
    所述导磁轭的框体部向上依次设置边磁铁和边华司，所述边华司与所述导磁轭的中心部第一磁间隙；所述导磁轭的中心部向下依次设置中心磁铁和中心华司，所述中心华司与所述导磁轭的框体部形成供所述第二振动系统的第二音圈伸入的第二磁间隙，所述第一磁间隙和所述第二磁间隙位于所述中心磁铁和所述边磁铁之间。
  4. 根据权利要求3所述的发声装置，其特征在于，所述磁路系统包括多块边磁铁，多块边磁铁对称设置在所述中心磁铁的外侧，所述第一定心支片避让所述边磁铁与所述第一音圈连接。
  5. 根据权利要求4所述的发声装置，其特征在于，所述磁路系统为长方形或腰圆形，所述中心磁铁为相应的长方形或腰圆形，所述边磁铁设置在所述磁路系统的长轴边上，所述第一定心支片向所述磁路系统的短轴边方向伸出与所述第一音圈的一端连接。
  6. 根据权利要求5所述的发声装置，其特征在于，所述连接壁位于所述磁路系统的短轴端上，所述连接壁连接在所述框体部的内边沿，所述第一音圈位于所述连接壁的外侧。
  7. 根据权利要求5所述的发声装置，其特征在于，所述第一定心支片包括支撑部与连接部，所述支撑部与所述第一音圈连接，所述连接部与所述支撑部连接，且所述连接部包括对称设置的两条连接悬臂以支撑所述第一音圈。
  8. 根据权利要求5所述的发声装置，其特征在于，所述第一振动系统包括多个第一定心支片，多个第一定心支片与所述第一音圈对称连接。
  9. 根据权利要求5所述的发声装置，其特征在于，还包括第一壳体组件，所述边华司以及所述第一振动系统的第一振膜和第一定心支片固持于所述第一壳体组件；
    或/和，还包括第二壳体组件，所述导磁轭的框体部以及所述第二振动系统固持于所述第二壳体组件。
  10. 根据权利要求9所述的发声装置，其特征在于，所述第一壳体组件和第二壳体组件分别设置在所述磁路系统的两面，所述边磁铁背离所述中心磁铁的一侧外露。
  11. 根据权利要求1所述的发声装置，其特征在于，所述第二振动系统还包括第二振膜和第二定心支片，所述第二音圈背离所述磁路系统的一端与所述第二定心支片连接，所述第二振膜连接在所述第二定心支片背离所述第二音圈的一侧。
  12. 一种电子设备，其特征在于，包括外壳设置在所述外壳内的权利要求1-11任一所述的发声装置。
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