WO2021258418A1 - 一种扬声器 - Google Patents

一种扬声器 Download PDF

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Publication number
WO2021258418A1
WO2021258418A1 PCT/CN2020/099854 CN2020099854W WO2021258418A1 WO 2021258418 A1 WO2021258418 A1 WO 2021258418A1 CN 2020099854 W CN2020099854 W CN 2020099854W WO 2021258418 A1 WO2021258418 A1 WO 2021258418A1
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WO
WIPO (PCT)
Prior art keywords
inner edge
dome
magnet
sound membrane
hole
Prior art date
Application number
PCT/CN2020/099854
Other languages
English (en)
French (fr)
Inventor
肖波
令狐荣林
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 WO2021258418A1 publication Critical patent/WO2021258418A1/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
    • H04R9/02—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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • This application relates to the technical field of acoustics, in particular to a loudspeaker.
  • the speaker is used as a voice playback device, and its structural design directly affects the voice quality.
  • the prior art speakers include a basin frame, a magnetic circuit system for accommodating the drum frame, and a vibration system.
  • the magnetic circuit system includes a magnetic bowl and a magnet steel.
  • the vibration system includes a sound film and a voice coil that drives the sound film to vibrate. The air flow is limited, which is not conducive to improving the audio performance of the speaker.
  • the purpose of this application is to provide a loudspeaker that solves the technical problem in the prior art that is not conducive to improving the audio performance of the loudspeaker due to the limited flow of vibrating air.
  • a speaker includes a vibration system and a magnetic circuit system
  • the magnetic circuit system includes a lower splint and a magnet part provided on the lower splint
  • the lower splint includes a plate body and A fixing column formed in the center of the plate body
  • the fixing column includes a fixing seat arranged on the plate body and a cylindrical portion arranged in the center of the fixing seat, and the cylindrical portion is provided along the Several fractures arranged at intervals in the circumferential direction of the cylindrical part
  • the vibration system includes an upper sound membrane, a voice coil located below the upper sound membrane to drive the upper sound membrane to vibrate and produce sound, and located below the upper sound membrane and fixedly connected
  • the connecting piece, the inner edge of the first sound film is formed with a first through hole, one end of the connecting piece is corresponding to the upper through hole, and the other end of the connecting piece is corresponding to the first through hole
  • the frame is connected to the voice coil; the magnet part is arranged around the lower vibrating assembly, the magnet part is formed with a magnetic gap, and the end of the voice coil away from the upper sound film extends to the magnetic In the gap; the lower sound membrane, the first cushion and the first sound membrane are surrounded to form a first cavity communicating with the hollow channel.
  • the first sound film includes a first fold ring and a first dome connected to the first fold ring
  • the first fold ring includes a first fold ring portion, which is formed A first outer edge formed by the outer edge extending outward, a first inner edge formed by the inner edge of the first folding ring portion extending inward, and a first middle hole surrounded by the first inner edge, the The first dome is attached to the first inner edge, and the first dome is provided with a first dome middle hole corresponding to the first middle hole.
  • the first middle hole and the first The hole in the dome forms the first through hole of the first sound film.
  • the first sound film further includes a second fold ring connected to the first dome, and the second fold ring includes a second fold ring portion, which is directed from the outer edge of the second fold ring portion.
  • the first dome is provided with a first ring-shaped hollow portion corresponding to the second folding ring portion
  • the first inner edge is provided with a first ring-shaped hollow portion corresponding to the first
  • the ring-shaped hollow part corresponds to a second ring-shaped hollow part provided.
  • the lower sound film includes a third folding ring and a third dome arranged around the third folding ring
  • the third folding ring includes a third folding ring part, A third outer edge formed by an outer edge extending outward and a third inner edge formed by an inner edge of the third folding ring portion extending inward, the third inner edge connected to the fixing seat, and the third outer edge It is connected to the inner edge of the third dome, and the outer edge of the third dome is connected to the first cushion edge.
  • the magnet portion includes a main magnet provided on the lower clamping plate and surrounding the fixed column and the lower vibration assembly, and a secondary magnet disposed on the lower clamping plate and surrounding the main magnet.
  • the magnetic gap is formed between the main magnet and the auxiliary magnet.
  • the main magnet includes a main magnetic steel arranged on the lower clamping plate and a main pole core arranged on a side of the main magnetic steel away from the lower clamping plate.
  • the secondary magnet includes a first secondary magnetic steel arranged on the lower clamping plate and surrounding the main magnetic steel, an upper clamping plate arranged on a side of the first secondary magnetic steel away from the lower clamping plate, and On the side of the upper splint away from the first auxiliary magnet and a second auxiliary magnet disposed corresponding to the first auxiliary magnet, and a second auxiliary magnet disposed on the upper splint away from the first auxiliary magnet A second cushion is arranged on the side and surrounds the second auxiliary magnetic steel, and the outer edge of the upper sound film is connected to a side of the second cushion away from the upper splint.
  • the upper sound film includes a fourth folding ring and a second dome connected to the fourth folding ring
  • the fourth folding ring includes a fourth folding ring portion
  • the fourth outer edge formed by the outer edge extending outward
  • the fourth inner edge formed by the inner edge of the fourth folding ring portion extending inward
  • the fourth middle hole surrounded by the fourth inner edge
  • the second dome is attached to the fourth inner edge
  • the second dome is provided with a second dome center hole corresponding to the fourth center hole
  • the top center hole forms an upper through hole of the upper sound film
  • the frame is used to support the second dome and the fourth inner edge.
  • the skeleton includes a skeleton main body arranged between the lower vibrating component and the upper sound membrane, and supporting legs extending outward from the skeleton main body, the skeleton main body is ring-shaped, and the skeleton main body One end of the first cushion is fixed to the side where the first sound film is connected, the other end is fixed to the upper sound film, and the support foot and the voice coil extend into the magnetic gap Connected to one end.
  • the skeleton body is provided with a plurality of openings, the upper sound membrane, the skeleton body and the first sound membrane are surrounded to form a second cavity, and the second cavity passes through the openings. It communicates with the internal space of the speaker.
  • the loudspeaker further includes a circuit board provided on the supporting leg, and the circuit board is connected to the voice coil.
  • the fracture extends from an end of the cylindrical part away from the fixing seat to an end of the cylindrical part close to the fixing seat along the vibration direction of the voice coil.
  • the vibration system of the speaker of the present application includes an upper sound film, a voice coil, and a lower vibration component
  • the lower vibration component includes a lower sound film, a first pad provided on the lower sound film, A first sound membrane fixed to the first cushion and a connecting piece with a hollow channel arranged between the upper sound membrane and the first sound membrane, one end of the connecting piece is connected to the upper sound membrane
  • the upper through hole is correspondingly arranged
  • the other end of the connecting piece is arranged correspondingly to the first through hole of the first sound film, the lower sound film, the first cushion and the first sound film are surrounded by A first cavity communicating with the hollow channel is formed.
  • the lower vibrating assembly constitutes a structure for increasing the flow rate of vibrating air, which vibrates synchronously with the upper sound membrane, and the gas in the first cavity passes through the connecting piece
  • the hollow channel communicates with the airflow of the upper sound film.
  • the Sd of the speaker can be increased, and the low-frequency response potential of the speaker can be increased; at the same time, the mid-frequency sensitivity (spl) of the speaker can also be increased.
  • FIG. 1 is a schematic diagram of the structure of a speaker according to an embodiment of the application
  • Figure 2 is a cross-sectional view of the loudspeaker shown in Figure 1 along the A-A direction;
  • FIG. 3 is an exploded view of the structure of the middle and lower sound membrane components of the loudspeaker according to the embodiment of the application;
  • FIG. 4 is an exploded view of the structure of the speaker according to the embodiment of the application.
  • FIG. 5 is a schematic diagram of the structure of the lower splint of the speaker according to the embodiment of the application.
  • FIG. 6 is a schematic diagram of a part of the structure of a speaker according to an embodiment of the application.
  • first”, “second”, and “third” in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first”, “second”, and “third” may explicitly or implicitly include at least one of the features.
  • "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined. All directional indicators (such as up, down, left, right, front, back%) in the embodiments of this application are only used to explain the relative positional relationship between the components in a specific posture (as shown in the figure) , Movement status, etc., if the specific posture changes, the directional indication will also change accordingly.
  • the terms “including” and “having” and any variations thereof are intended to cover non-exclusive inclusions.
  • the speaker 100 includes a vibration system 1 and a magnetic circuit system 2.
  • the vibration system 1 includes an upper sound film 11, a voice coil 12, and a lower vibration.
  • the inner edge of the sound membrane 11 is formed with an upper through hole 11a.
  • FIG. 2 and FIG. 3. As shown in FIG. 2 and FIG.
  • the first sound membrane 130 fixed to the first cushion 132 and the connecting member 135 with a hollow channel 135a arranged between the upper sound membrane 11 and the first sound membrane 130, the first sound membrane 130
  • the outer edge of the first pad 132 is connected to the side away from the lower sound film 131, the inner edge of the first sound film 130 is connected to the magnetic circuit system 2, and the inner edge of the first sound film 130 is formed with a first through hole 130a
  • One end of the connecting piece 135 is arranged corresponding to the upper through hole 11a, and the other end of the connecting piece 135 is arranged corresponding to the first through hole 130a.
  • the skeleton 14 is connected to the voice coil 12, and the skeleton 14 connects the lower vibrating assembly 13 and the upper sound membrane 11.
  • the skeleton 14 includes a skeleton main body 141 connecting the lower vibrating assembly 13 and the upper sound membrane 11 and outwards from the skeleton main body 141
  • the extended support leg 142, the voice coil 12 and the support leg 142 are connected to the frame body 141 in a ring shape.
  • the top of the main body 141 is connected to the upper sound membrane 11.
  • the magnetic circuit system 2 includes a lower splint 21.
  • the lower splint 21 includes a plate body 211 and a fixing column 212 formed in the center of the plate body 211.
  • the fixing column 212 is used to fix and support the lower vibration assembly 13.
  • the fixed column 212 includes a fixing seat 2121 provided on the plate body 211 and a cylindrical portion 2122 provided on the fixing seat 2121, and the cylindrical portion 2122 is provided with There are several breaks 2123 arranged at intervals along the circumferential direction of the cylindrical portion 2122.
  • the inner edge of the lower sound membrane 131 is connected to the fixing seat 2121 and is arranged around the cylindrical portion 2122.
  • the first sound membrane The inner edge of 130 is connected to the top end of the cylindrical portion 2122.
  • the magnetic circuit system 2 also includes a magnet part 20 arranged on the lower clamping plate 21 and surrounding the lower vibrating assembly 13.
  • the magnet part 20 is formed with a magnetic gap 20a.
  • the end of the voice coil 12 away from the upper sound film 11 extends to the magnetic In the gap 20a, one end of the voice coil 12 extending into the magnetic gap 20a is connected to the supporting leg 142.
  • the break 2123 extends from an end of the cylindrical portion 2122 away from the fixing seat 2121 to an end of the cylindrical portion 2122 close to the fixing seat 2121 along the vibration direction of the voice coil 12.
  • the lower vibrating assembly 13 is located in the magnet part 20, the lower sound membrane 131, the first cushion 132 and the first sound membrane 130 are surrounded to form a first cavity 13a, and the cylindrical part 2122 is located in the first cavity 13a.
  • the voice coil 12 vibrates under the action of the magnetic field generated by the magnetic circuit system 2, which drives the frame 14 connected to the voice coil 12 to vibrate, and then drives the upper sound membrane 11 and the lower vibration component 13 connected to the frame 14 to vibrate synchronously , Therefore, the first sound membrane 130 and the lower sound membrane 131 in the lower vibration assembly 13 vibrate synchronously with the upper sound membrane 11, and the air flow in the first cavity 13a and the air flow of the hollow channel 135a and the upper sound membrane 11 Interlinked.
  • the skeleton body 141 is provided with a plurality of openings 143, the upper sound membrane 11, the skeleton body 141, and the first sound membrane 130 are surrounded to form a second cavity 13b, and the second cavity The body 13b communicates with the internal space of the speaker 100 through the opening 143.
  • the first sound film 130 includes a first folding ring 133 and a first dome 134 connected to the first folding ring 133, and the first folding ring 133 includes a first folding ring 133.
  • the first middle hole 133a surrounded by the first inner side 1333, the first dome 134 is attached to the side of the first inner side 1333 that faces away from the lower sound membrane 131, and the first dome 134
  • a first dome center hole 134a corresponding to the first center hole 133a is opened, and the first center hole 133a and the first dome center hole 134a form a first passage of the first sound membrane 130 ⁇ 130a.
  • the first sound film 130 further includes a second folding ring 136 connected to the first dome 134.
  • the second folding ring 136 includes a second folding ring portion 1361.
  • a second outer edge 1362 formed by the outer edge of the ring portion 1361 extending outwardly, a second inner edge 1363 formed by the inner edge of the second folded ring portion 1361 extending inwardly, and a second inner edge 1363 surrounded by the second inner edge 1363
  • the second middle hole 136a, the second middle hole 136a and the first through hole 130a are arranged correspondingly, and the first dome 134 is provided with a first ring-shaped cutout corresponding to the second folding ring portion 1361.
  • the space 134b, the second outer edge 1362 and the second inner edge 1363 of the second folding ring 136 are all connected to the first dome 134, and the second outer edge 1362 and the second inner edge 1363 of the second folding ring 136 are respectively provided on the first dome 134.
  • the first inner edge 1333 is provided with a second ring-shaped hollow portion 133b corresponding to the first ring-shaped hollow portion 134b.
  • the lower sound film 131 includes a third fold ring 137 and a third dome 138 arranged around the third fold ring 137.
  • the third fold ring 137 includes a third fold ring portion 1371, which is formed by the third fold ring portion 1371.
  • the voice coil 12 drives the upper sound membrane 11 and the first sound membrane 130 and the lower sound membrane 131 in the lower vibration assembly 13 to vibrate synchronously through the skeleton 14, and the lower vibration assembly 13 forms a structure for increasing the vibration air flow.
  • This structure vibrates synchronously with the upper sound membrane 11.
  • the air in the first cavity 13a communicates with the air flow of the upper sound membrane 11 through the hollow channel 135a of the connecting piece 135.
  • the Sd of the speaker can be increased. Improve the potential of the speaker's low-frequency response; at the same time, it can also increase the speaker's mid-frequency sensitivity (spl).
  • the upper sound film 11 includes a fourth folding ring 111 and a second dome 112 connected to the fourth folding ring 111, and the fourth folding ring 111 includes a fourth folding ring 111.
  • the fourth middle hole 111a surrounded by the fourth inner side 1113, the second dome 112 is attached to the fourth inner side 1113, and the second dome 112 is provided with the fourth middle hole 111a.
  • 111 a corresponds to the second dome center hole 112 a
  • the fourth center hole 111 a and the second dome center hole 112 a form the upper through hole 11 a of the upper sound film 11.
  • the skeleton body 141 is arranged between the lower sound membrane assembly 13 and the upper sound membrane 11 and is arranged around the connecting member 135, specifically, the first folding ring
  • the first outer edge 1332 of the 133 is connected to the first cushion edge 132
  • the lower end of the skeleton body 141 is arranged on the first outer edge 1332 of the first folding ring 133
  • the upper end of the skeleton body 141 is connected to the second dome 112.
  • the main body 141 is also used to support the second dome 112 and the fourth inner edge 1113.
  • the magnet part 20 includes a main magnet 201 and a secondary magnet 202
  • the main magnet 201 includes a main magnet 22 arranged on the lower clamping plate 21 and arranged on the main magnet 22
  • the main pole core 24, the auxiliary magnet 202 includes a first auxiliary magnetic steel 23 arranged on the lower clamping plate 21, an upper clamping plate 25 arranged on the first auxiliary magnetic steel 23, and a second auxiliary magnetic steel arranged on the upper clamping plate 25 26 and a second pad 27 on the upper clamping plate 25.
  • the main magnetic steel 22 is arranged on the plate body 211 of the lower splint 21 and is arranged around the fixed column 212 and the lower sound membrane assembly 13, and the first sub
  • the magnetic steel 23 is arranged on the plate body 211 of the lower clamping plate 21 and arranged around the main magnetic steel 22, the main pole core 24 is arranged on the side of the main magnetic steel 22 away from the lower clamping plate 21, and the upper clamping plate 25 It is arranged on the side of the first secondary magnetic steel 23 away from the lower clamping plate 21.
  • the upper clamping plate 25 is arranged around the voice coil 12, the second auxiliary magnetic steel 26 is arranged on the upper clamping plate 25, the second auxiliary magnetic steel 26 is arranged in one-to-one correspondence with the first auxiliary magnetic steel 23, and the second pad 27 is arranged on the upper clamping plate 25.
  • the upper clamping plate 25 is arranged on and around the second auxiliary magnet 26, the main magnet 22 and the main pole core 24 form a main magnet 201 located on the inner side, the first auxiliary magnet 23, the upper clamping plate 25, and the second auxiliary magnet 26 and the second backing edge 27 form a secondary magnet 202 located on the outside, and a magnetic gap 20a is formed between the main magnet 201 and the secondary magnet 202.
  • the outer edge of the upper sound film 11 is connected to the side of the second pad 27 away from the upper splint 25, that is, the fourth outer edge 1112 of the fourth folding ring 111 is provided on the second pad 27 .
  • the plate body 211 of the lower clamping plate 21 is rectangular, and the number of main magnets 22, the number of first auxiliary magnets 23, and the number of second auxiliary magnets 26 are all four, which are respectively arranged in the rectangular shape.
  • the support legs 142 of the frame 14 extend into the magnetic gap 20a through the interval between the two adjacent main magnets 22 to connect with the voice coil 12, and the voice coil 12 extends into the magnetic gap 20a at one end. On the supporting feet 142.
  • the main magnetic steel 22, the first secondary magnetic steel 23 and the second secondary magnetic steel 26 are made of permanent magnetic materials, and the main pole core 24, the upper clamping plate 25, the second pad 27 and the lower clamping plate 21 are made of permanent magnetic material.
  • the magnetic material is made of carbon steel.
  • the speaker 100 further includes a circuit board 3 arranged on the supporting leg 142, one end of the circuit board 3 is connected to the external circuit, the other end of the circuit board 3 is connected to the voice coil 12, and the circuit The end of the board 3 connected to the supporting leg 142 is located between the supporting leg 142 and the end of the voice coil 12 extending into the magnetic gap 20a.
  • the circuit board 3 is a flexible circuit board.

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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

本申请涉及声学技术领域，特别涉及一种扬声器。所述扬声器包括振动系统和磁路系统，振动系统包括上音膜、音圈、下振动组件和骨架，所述下振动组件包括下音膜、设于所述下音膜上的第一垫边、固定于所述第一垫边的第一音膜以及设于所述上音膜和所述第一音膜之间的具有中空通道的连接件，所述连接件的一端与所述上音膜的上通孔对应设置、所述连接件的另一端与所述第一音膜的第一通孔对应设置，通过上述方式，下振动组件构成了一个增大振动气流量结构，该结构与上音膜同步振动，气体通过连接件的中空通道与上音膜的气流相通，在相同体积的情况下，可以增大扬声器的Sd，提升扬声器的低频响应潜力；同时，还可以提升扬声器的中频灵敏度（spl)。

Description

一种扬声器 技术领域
本申请涉及声学技术领域，特别涉及一种扬声器。
 背景技术
近年来，随着科技的发展，尤其是移动通信技术的飞速进展，越来越多的移动电子设备出现在人们的日常生活中，如智能手机、平板电脑、笔记本电脑及多功能媒体播放器已成为人们不可或缺的生活用品。而在这些移动电子设备中，语音播放装置是其内部必不可少的部件，语音质量的高低直接影响用户使用这些移动电子设备时的用户体验。
扬声器作为语音播放装置，其结构设计直接影响语音质量。现有技术的扬声器包括盆架、收容千盆架的磁路系统和振动系统，磁路系统包括磁碗和磁钢，振动系统包括音膜和驱动音膜振动发声的音圈，上述扬声器由于振动气流量有限，不利于提升扬声器的音频性能。
因此，有必要提供一种新的扬声器以解决上述技术问题。
 技术问题
本申请的目的在于提供一种扬声器，解决现有技术中由于振动气流量有限导致的不利于提升扬声器音频性能的技术问题。
 技术解决方案
本申请的技术方案如下：提供一种扬声器，所述扬声器包括振动系统和磁路系统，所述磁路系统包括下夹板以及设于所述下夹板的磁体部，所述下夹板包括板体以及形成于所述板体中央的固定柱，所述固定柱包括设于所述板体的固定座以及设于所述固定座中央的筒状部，所述筒状部上设有沿着所述筒状部的周向间隔排列的若干断口；所述振动系统包括上音膜、位于所述上音膜下方驱动所述上音膜振动发声的音圈、位于所述上音膜下方并固接于所述固定柱的下振动组件以及连接所述下振动组件和所述上音膜的骨架，所述上音膜的内边缘形成有上通孔，所述下振动组件包括内边缘固定于所述固定座并环绕所述筒状部设置的下音膜、设于所述下音膜的外边缘远离所述板体一侧的第一垫边、外边缘固定于所述第一垫边远离所述下音膜一侧且内边缘固定于所述筒状部远离所述固定座一侧的第一音膜以及设于所述上音膜和所述第一音膜之间的具有中空通道的连接件，所述第一音膜的内边缘形成有第一通孔，所述连接件的一端与所述上通孔对应设置、所述连接件的另一端与所述第一通孔对应设置，所述骨架与所述音圈相连；所述磁体部环绕所述下振动组件设置，所述磁体部形成有磁间隙，所述音圈远离所述上音膜的一端延伸至所述磁间隙内；所述下音膜、所述第一垫边以及所述第一音膜围设形成与所述中空通道连通的第一腔体。
优选地，所述第一音膜包括第一折环以及与所述第一折环连接的第一球顶，所述第一折环包括第一折环部、由所述第一折环部的外边缘向外延伸形成的第一外边、由所述第一折环部的内边缘向内延伸形成的第一内边以及由所述第一内边围成的第一中孔，所述第一球顶贴设于所述第一内边，所述第一球顶开设有与所述第一中孔对应设置的第一球顶中孔，所述第一中孔和所述第一球顶中孔形成所述第一音膜的第一通孔。
优选地，所述第一音膜还包括与所述第一球顶连接的第二折环，所述第二折环包括第二折环部、由所述第二折环部的外边缘向外延伸形成的第二外边、由所述第二折环部的内边缘向内延伸形成的第二内边以及由所述第二内边围成的第二中孔，所述第二中孔与所述第一通孔对应设置，所述第一球顶开设有与所述第二折环部对应设置的第一环状挖空部，所述第一内边开设有与所述第一环状挖空部对应设置的第二环状挖空部。
优选地，所述下音膜包括第三折环以及环绕所述第三折环设置的第三球顶，所述第三折环包括第三折环部、由所述第三折环部的外边缘向外延伸形成的第三外边以及由所述第三折环部的内边缘向内延伸形成的第三内边，所述第三内边连接于所述固定座，所述第三外边连接于所述第三球顶的内边缘，所述第三球顶的外边缘与所述第一垫边连接。
优选地，所述磁体部包括设于所述下夹板上围绕所述固定柱和所述下振动组件设置的主磁体以及设于所述下夹板上围绕所述主磁体设置的副磁体，所述主磁体和所述副磁体之间形成所述磁间隙。
优选地，所述主磁体包括设于所述下夹板的主磁钢以及设于所述主磁钢远离所述下夹板一侧的主极芯。
优选地，所述副磁体包括设于所述下夹板并围绕所述主磁钢设置的第一副磁钢、设于所述第一副磁钢远离所述下夹板一侧的上夹板、设于所述上夹板远离所述第一副磁钢的一侧并与所述第一副磁钢对应设置的第二副磁钢以及设于所述上夹板远离所述第一副磁钢的一侧并围绕所述第二副磁钢设置的第二垫边，所述上音膜的外边缘连接于所述第二垫边远离所述上夹板的一侧。
优选地，所述上音膜包括第四折环以及与所述第四折环连接的第二球顶，所述第四折环包括第四折环部、由所述第四折环部的外边缘向外延伸形成的第四外边、由所述第四折环部的内边缘向内延伸形成的第四内边以及由所述第四内边围成的第四中孔，所述第二球顶贴设于所述第四内边，所述第二球顶开设有与所述第四中孔对应设置的第二球顶中孔，所述第四中孔和所述第二球顶中孔形成所述上音膜的上通孔，所述骨架用于支撑所述第二球顶和所述第四内边。
优选地，所述骨架包括设于所述下振动组件和所述上音膜之间的骨架主体以及从所述骨架主体向外延伸的支撑脚，所述骨架主体呈环状，所述骨架主体的一端固设于所述第一垫边连接有所述第一音膜的一侧、另一端固设于所述上音膜，所述支撑脚与所述音圈伸入所述磁间隙内的一端相连。
优选地，所述骨架主体上设有若干开孔，所述上音膜、所述骨架主体和所述第一音膜围设形成第二腔体，所述第二腔体通过所述开孔与所述扬声器的内部空间连通。
优选地，所述扬声器还包括设于所述支撑脚的电路板，所述电路板与所述音圈相连。
优选地，所述断口从所述筒状部的远离所述固定座的一端沿着所述音圈的振动方向向所述筒状部靠近所述固定座的一端延伸。
 有益效果
本申请的有益效果在于：本申请的扬声器的振动系统包括上音膜、音圈和下振动组件，所述下振动组件包括下音膜、设于所述下音膜上的第一垫边、固定于所述第一垫边的第一音膜以及设于所述上音膜和所述第一音膜之间的具有中空通道的连接件，所述连接件的一端与所述上音膜的上通孔对应设置、所述连接件的另一端与所述第一音膜的第一通孔对应设置，所述下音膜、所述第一垫边以及所述第一音膜围设形成与所述中空通道连通的第一腔体，通过上述方式，下振动组件构成了一个增大振动气流量结构，该结构与上音膜同步振动，第一腔体中的气体通过连接件的中空通道与上音膜的气流相通，在相同体积的情况下，可以增大扬声器的Sd，提升扬声器的低频响应潜力；同时，还可以提升扬声器的中频灵敏度（spl)。
 附图说明
图1为本申请实施例的扬声器的结构示意图；
图2为图1所示扬声器沿A-A向的剖视图；
图3为本申请实施例的扬声器中下音膜组件的结构分解图；
图4为本申请实施例的扬声器的结构分解图；
图5为本申请实施例的扬声器中下夹板的结构示意图；
图6为本申请实施例的扬声器的部分结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对申请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申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，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他实施例，都属于本申请保护的范围。
本申请中的术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括至少一个该特征。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。本申请实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
本申请实施例提供了一种扬声器100，请参阅图1至图6所示，该扬声器100包括振动系统1和磁路系统2，该振动系统1包括上音膜11、音圈12、下振动组件13以及骨架14，其中，音圈12位于该上音膜11下方以驱动该上音膜11振动发声，下振动组件13位于该上音膜11下方并固接于该磁路系统2，上音膜11的内边缘形成有上通孔11a，请参阅图2和图3所示，下振动组件13包括下音膜131、设于所述下音膜131外边缘上的第一垫边132、固定于所述第一垫边132的第一音膜130以及设于所述上音膜11和所述第一音膜130之间的具有中空通道135a的连接件135，第一音膜130的外边缘连接于第一垫边132远离下音膜131的一侧，第一音膜130的内边缘与磁路系统2连接，该第一音膜130的内边缘形成有第一通孔130a，该连接件135的一端与所述上通孔11a对应设置、所述连接件135的另一端与所述第一通孔130a对应设置。骨架14与音圈12相连，并且，骨架14将下振动组件13与上音膜11连接，骨架14包括连接下振动组件13和上音膜11的骨架主体141以及从所述骨架主体141向外延伸的支撑脚142，音圈12与支撑脚142连接骨架主体141呈环状，骨架主体141的底部固设于所述第一垫边132连接有所述第一音膜130的一侧，骨架主体141的顶部连接于上音膜11。
请参阅图2、图4和图5所示，所述磁路系统2包括下夹板21，具体地，下夹板21包括板体211和形成于所述板体211中央的固定柱212，固定柱212用于固定及支撑下振动组件13，所述固定柱212包括设于所述板体211的固定座2121和设于所述固定座2121的筒状部2122，所述筒状部2122上设有沿着所述筒状部2122的周向间隔排列的若干断口2123，所述下音膜131的内边缘连接于所述固定座2121上并环绕筒状部2122设置，所述第一音膜130的内边缘连接于所述筒状部2122的顶端。磁路系统2还包括设于下夹板21上并围绕下振动组件13设置的磁体部20，磁体部20形成有磁间隙20a，该音圈12远离该上音膜11的一端延伸至所述磁间隙20a内，音圈12伸入磁间隙20a内的一端与支撑脚142连接。在一个可选的实施方式中，该断口2123从该筒状部2122远离固定座2121的一端沿着该音圈12的振动方向向筒状部2122靠近固定座2121的一端延伸。
下振动组件13位于磁体部20内，所述下音膜131、所述第一垫边132以及所述第一音膜130围设形成第一腔体13a，所述筒状部2122位于第一腔体13a内，音圈12在磁路系统2产生的磁场作用下发生振动，带动与音圈12连接的骨架14振动，进而带动与骨架14连接的上音膜11和下振动组件13同步振动，于是，下振动组件13中的第一音膜130和下音膜131与上音膜11同步振动，第一腔体13a中的气流与所述中空通道135a与所述上音膜11的气流相通。
进一步地，所述骨架主体141上设有若干开孔143，所述上音膜11、所述骨架主体141和所述第一音膜130围设形成第二腔体13b，所述第二腔体13b通过所述开孔143与所述扬声器100的内部空间连通。
请继续参阅图2和图3所示，第一音膜130包括第一折环133以及与所述第一折环133连接的第一球顶134，所述第一折环133包括第一折环部1331、由所述第一折环部1331的外边缘向外延伸形成的第一外边1332、由所述第一折环部1331的内边缘向内延伸形成的第一内边1333以及由所述第一内边1333围成的第一中孔133a，所述第一球顶134贴设于所述第一内边1333背向该下音膜131的一面，所述第一球顶134开设有与所述第一中孔133a对应设置的第一球顶中孔134a，所述第一中孔133a和所述第一球顶中孔134a形成所述第一音膜130的第一通孔130a。
为了进一步增加振动效果，第一音膜130还包括与所述第一球顶134连接的第二折环136，所述第二折环136包括第二折环部1361、由所述第二折环部1361的外边缘向外延伸形成的第二外边1362、由所述第二折环部1361的内边缘向内延伸形成的第二内边1363以及由所述第二内边1363围成的第二中孔136a，所述第二中孔136a与所述第一通孔130a对应设置，所述第一球顶134开设有与所述第二折环部1361对应设置的第一环状挖空部134b，第二折环136的第二外边1362和第二内边1363均连接于第一球顶134上，第二折环136的第二外边1362和第二内边1363分别设于第一环状挖空部134b的外边缘处和内边缘处，所述第一内边1333开设有与所述第一环状挖空部134b对应设置的第二环状挖空部133b。
下音膜131包括第三折环137以及围绕第三折环137设置的第三球顶138，所述第三折环137包括第三折环部1371、由所述第三折环部1371的外边缘向外延伸形成的第三外边1372以及由所述第三折环部1371的内边缘向内延伸形成的第三内边1373，第三折环137的第三内边1373连接于固定座2121并环绕筒状部2122设置，第三折环137的第三外边1372连接于第三球顶138的内边缘处。
在本实施例中，音圈12通过骨架14带动上音膜11以及下振动组件13中的第一音膜130和下音膜131同步振动，下振动组件13构成了一个增大振动气流量结构，该结构与上音膜11同步振动，第一腔体13a中的气体通过连接件135的中空通道135a与上音膜11的气流相通，在相同体积的情况下，可以增大扬声器的Sd，提升扬声器的低频响应潜力；同时，还可以提升扬声器的中频灵敏度（spl)。
请参阅图2和图4所示，所述上音膜11包括第四折环111以及与所述第四折环111连接的第二球顶112，所述第四折环111包括第四折环部1111、由所述第四折环部1111的外边缘向外延伸形成的第四外边1112、由所述第四折环部1111的内边缘向内延伸形成的第四内边1113以及由所述第四内边1113围成的第四中孔111a，所述第二球顶112贴设于所述第四内边1113，所述第二球顶112开设有与所述第四中孔111a对应设置的第二球顶中孔112a，所述第四中孔111a和所述第二球顶中孔112a形成所述上音膜11的上通孔11a。
请参阅图2、图4和图6所示，骨架主体141设于所述下音膜组件13和所述上音膜11之间并围绕所述连接件135设置，具体地，第一折环133的第一外边1332连接于第一垫边132上，骨架主体141的下端设于第一折环133的第一外边1332上，骨架主体141的上端与第二球顶112连接，所述骨架主体141还用于支撑所述第二球顶112和所述第四内边1113。
请参阅图2、图4和图5所示，所述磁体部20包括主磁体201和副磁体202，主磁体201包括设于下夹板21上的主磁钢22以及设于主磁钢22上的主极芯24，副磁体202包括设于下夹板21上的第一副磁钢23、设于第一副磁钢23上的上夹板25、设于上夹板25上的第二副磁钢26以及设于上夹板25上的第二垫边27。请继续参阅图2、图4和图6所示，主磁钢22设于所述下夹板21的板体211上并围绕所述固定柱212和所述下音膜组件13设置,第一副磁钢23设于所述下夹板21的板体211上并围绕所述主磁钢22设置，主极芯24设于所述主磁钢22的远离所述下夹板21一侧，上夹板25设于所述第一副磁钢23的远离所述下夹板21一侧。上夹板25围绕音圈12设置，第二副磁钢26设于所述上夹板25上，第二副磁钢26与第一副磁钢23一一对应设置，第二垫边27设于所述上夹板25上并围绕所述第二副磁钢26设置，主磁钢22和主极芯24形成位于内侧的主磁体201，第一副磁钢23、上夹板25、第二副磁钢26以及第二垫边27形成位于外侧的副磁体202，主磁体201和副磁体202之间形成磁间隙20a。
所述上音膜11的外边缘连接于所述第二垫边27远离所述上夹板25的一侧，也就是说，第四折环111的第四外边1112设于第二垫边27上。在本实施例中，下夹板21的板体211呈矩形，主磁钢22的数量、第一副磁钢23的数量以及第二副磁钢26的数量均为四个，分别对应设置于矩形的四个边位置处，骨架14的支撑脚142通过相邻的两个主磁钢22之间的间隔伸出磁间隙20a内与音圈12相连，音圈12伸入磁间隙20a的一端置于支撑脚142上。
在本实施例中，主磁钢22、第一副磁钢23和第二副磁钢26由永磁材料制成，主极芯24、上夹板25、第二垫边27及下夹板21由导磁材料如碳钢制成。
进一步地，所述扬声器100还包括设于所述支撑脚142的电路板3，所述电路板3一端与所述外部电路相连、所述电路板3另一端与所述音圈12相连，电路板3连接于支撑脚142的一端位于支撑脚142与音圈12伸入磁间隙20a的一端之间。在一个可选的实施方式中，该电路板3为柔性电路板。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (12)

1、一种扬声器，其特征在于，所述扬声器包括振动系统和磁路系统，所述磁路系统包括下夹板以及设于所述下夹板的磁体部，所述下夹板包括板体以及形成于所述板体中央的固定柱，所述固定柱包括设于所述板体的固定座以及设于所述固定座中央的筒状部，所述筒状部上设有沿着所述筒状部的周向间隔排列的若干断口；所述振动系统包括上音膜、位于所述上音膜下方驱动所述上音膜振动发声的音圈、位于所述上音膜下方并固接于所述固定柱的下振动组件以及连接所述下振动组件和所述上音膜的骨架，所述上音膜的内边缘形成有上通孔，所述下振动组件包括内边缘固定于所述固定座并环绕所述筒状部设置的下音膜、设于所述下音膜的外边缘远离所述板体一侧的第一垫边、外边缘固定于所述第一垫边远离所述下音膜一侧且内边缘固定于所述筒状部远离所述固定座一侧的第一音膜以及设于所述上音膜和所述第一音膜之间的具有中空通道的连接件，所述第一音膜的内边缘形成有第一通孔，所述连接件的一端与所述上通孔对应设置、所述连接件的另一端与所述第一通孔对应设置，所述骨架与所述音圈相连；所述磁体部环绕所述下振动组件设置，所述磁体部形成有磁间隙，所述音圈远离所述上音膜的一端延伸至所述磁间隙内；所述下音膜、所述第一垫边以及所述第一音膜围设形成与所述中空通道连通的第一腔体。
2、根据权利要求1所述的扬声器，其特征在于：所述第一音膜包括第一折环以及与所述第一折环连接的第一球顶，所述第一折环包括第一折环部、由所述第一折环部的外边缘向外延伸形成的第一外边、由所述第一折环部的内边缘向内延伸形成的第一内边以及由所述第一内边围成的第一中孔，所述第一球顶贴设于所述第一内边，所述第一球顶开设有与所述第一中孔对应设置的第一球顶中孔，所述第一中孔和所述第一球顶中孔形成所述第一音膜的第一通孔。
3、根据权利要求2所述的扬声器，其特征在于：所述第一音膜还包括与所述第一球顶连接的第二折环，所述第二折环包括第二折环部、由所述第二折环部的外边缘向外延伸形成的第二外边、由所述第二折环部的内边缘向内延伸形成的第二内边以及由所述第二内边围成的第二中孔，所述第二中孔与所述第一通孔对应设置，所述第一球顶开设有与所述第二折环部对应设置的第一环状挖空部，所述第一内边开设有与所述第一环状挖空部对应设置的第二环状挖空部。
4、根据权利要求1所述的扬声器，其特征在于：所述下音膜包括第三折环以及环绕所述第三折环设置的第三球顶，所述第三折环包括第三折环部、由所述第三折环部的外边缘向外延伸形成的第三外边以及由所述第三折环部的内边缘向内延伸形成的第三内边，所述第三内边连接于所述固定座，所述第三外边连接于所述第三球顶的内边缘，所述第三球顶的外边缘与所述第一垫边连接。
5、根据权利要求1所述的扬声器，其特征在于：所述磁体部包括设于所述下夹板上围绕所述固定柱和所述下振动组件设置的主磁体以及设于所述下夹板上围绕所述主磁体设置的副磁体，所述主磁体和所述副磁体之间形成所述磁间隙。
6、根据权利要求5所述的扬声器，其特征在于：所述主磁体包括设于所述下夹板的主磁钢以及设于所述主磁钢远离所述下夹板一侧的主极芯。
7、根据权利要求6所述的扬声器，其特征在于：所述副磁体包括设于所述下夹板并围绕所述主磁钢设置的第一副磁钢、设于所述第一副磁钢远离所述下夹板一侧的上夹板、设于所述上夹板远离所述第一副磁钢的一侧并与所述第一副磁钢对应设置的第二副磁钢以及设于所述上夹板远离所述第一副磁钢的一侧并围绕所述第二副磁钢设置的第二垫边，所述上音膜的外边缘连接于所述第二垫边远离所述上夹板的一侧。
8、根据权利要求1所述的扬声器，其特征在于：所述上音膜包括第四折环以及与所述第四折环连接的第二球顶，所述第四折环包括第四折环部、由所述第四折环部的外边缘向外延伸形成的第四外边、由所述第四折环部的内边缘向内延伸形成的第四内边以及由所述第四内边围成的第四中孔，所述第二球顶贴设于所述第四内边，所述第二球顶开设有与所述第四中孔对应设置的第二球顶中孔，所述第四中孔和所述第二球顶中孔形成所述上音膜的上通孔，所述骨架用于支撑所述第二球顶和所述第四内边。
9、根据权利要求1所述的扬声器，其特征在于：所述骨架包括设于所述下振动组件和所述上音膜之间的骨架主体以及从所述骨架主体向外延伸的支撑脚，所述骨架主体呈环状，所述骨架主体的一端固设于所述第一垫边连接有所述第一音膜的一侧、另一端固设于所述上音膜，所述支撑脚与所述音圈伸入所述磁间隙内的一端相连。
10、根据权利要求9所述的扬声器，其特征在于：所述骨架主体上设有若干开孔，所述上音膜、所述骨架主体和所述第一音膜围设形成第二腔体，所述第二腔体通过所述开孔与所述扬声器的内部空间连通。
11、根据权利要求9所述的扬声器，其特征在于：所述扬声器还包括设于所述支撑脚的电路板，所述电路板与所述音圈相连。
12、根据权利要求1所述的扬声器，其特征在于：所述断口从所述筒状部的远离所述固定座的一端沿着所述音圈的振动方向向所述筒状部靠近所述固定座的一端延伸。
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