WO2021174576A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2021174576A1
WO2021174576A1 PCT/CN2020/079057 CN2020079057W WO2021174576A1 WO 2021174576 A1 WO2021174576 A1 WO 2021174576A1 CN 2020079057 W CN2020079057 W CN 2020079057W WO 2021174576 A1 WO2021174576 A1 WO 2021174576A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
magnetic part
sound
magnetic
basin frame
Prior art date
Application number
PCT/CN2020/079057
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English (en)
French (fr)
Inventor
肖波
令狐荣林
章统
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 WO2021174576A1 publication Critical patent/WO2021174576A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to the field of sound and electricity, and in particular to a sound emitting device used in portable electronic products.
  • the sound device in the related art includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and emit sound.
  • the vibration system includes an upper diaphragm and a lower diaphragm fixed on opposite sides of the basin frame and The voice coil that drives the upper and lower diaphragms to vibrate and produce sound. Since such a sound emitting device has two sounding surfaces, an upper diaphragm and a lower diaphragm, it can meet the needs of special occasions requiring double-sided sound. However, the upper diaphragm and the lower diaphragm of the sound emitting device are driven by only one voice coil, so that the upper diaphragm and the lower diaphragm cannot vibrate and produce sound separately, which limits the application occasions.
  • the purpose of the present invention is to provide a sounding device to solve the problem that the two sounding surfaces of the sounding device in the related art cannot vibrate and sound separately.
  • the present invention provides a sound-producing device, including a basin frame, a vibration system and a magnetic circuit system fixed on the basin frame, the vibration system including a first vibration system and a second vibration system that are relatively spaced apart
  • the first vibration system includes an upper diaphragm and an upper voice coil that drives the upper diaphragm to vibrate and produce sound
  • the second vibration system includes a lower diaphragm and a lower voice coil that drives the lower diaphragm to vibrate and produce sound
  • the upper diaphragm and the lower diaphragm are respectively fixed on opposite ends of the basin frame and enclose the basin frame to form a receiving space
  • the magnetic circuit system includes a ring-shaped fixed to the basin frame A first splint and a second splint arranged opposite to the first splint, a through hole penetrating the first splint and opposite to the second splint is provided in the middle of the first splint; the magnetic circuit system includes
  • the outer magnetic part of the outer magnetic gap is formed between the magnetic parts, the first clamping plate is fixed to the middle magnetic part and the side of the outer magnetic part facing the upper diaphragm, and the second clamping plate is fixed to the upper diaphragm.
  • the inner magnetic part and the middle magnetic part face one side of the lower diaphragm, the inner magnetic part faces the through hole, and the upper voice coil is inserted into the inner magnetic gap through the through hole, so The lower voice coil is inserted into the outer magnetic gap;
  • the first splint, the second splint, and the middle magnetic part separate the accommodating space into a first back cavity and a second back cavity that are not connected to each other;
  • a first leakage hole connecting the first rear cavity with the outside and a second leakage hole connecting the second rear cavity with the outside are penetrated on the basin frame.
  • the outer magnetic part has a leakage passage connecting the outer magnetic gap and the second leakage hole, and the leakage passage is arranged directly opposite to the second leakage hole.
  • the outer magnetic part is composed of a plurality of third permanent magnets arranged around the middle magnetic part, and two adjacent third permanent magnets are arranged at intervals, wherein two adjacent to the second leakage hole The third permanent magnets are arranged at intervals to form the leakage channel.
  • the lower voice coil and the lower diaphragm are connected by a skeleton, and the skeleton includes a first connecting portion connected with the lower diaphragm, a second connecting portion connected with the lower voice coil, and a connecting seat.
  • the first connecting portion and the third connecting portion of the second connecting portion are connected with the skeleton, and the skeleton includes a first connecting portion connected with the lower diaphragm, a second connecting portion connected with the lower voice coil, and a connecting seat.
  • both the first connecting portion and the second connecting portion have a ring structure.
  • the skeleton is an integrally formed structure.
  • the first vibration system further includes an upper spherical top arranged in the containing space
  • the second vibration system further comprises a lower spherical top arranged in the containing space, and the upper spherical top vibrates along the edge.
  • the opposite two sides in the direction are respectively connected with the upper diaphragm and the upper voice coil, and the opposite sides of the lower dome in the vibration direction are respectively connected with the first connecting portion and the lower diaphragm.
  • the basin frame has a rectangular structure, and the first leakage hole and the second leakage hole are located on the same side wall of the basin frame along the long axis direction.
  • the magnetic circuit system further includes a first magnetic conductive plate fixed on the side of the inner magnetic portion facing the upper diaphragm and a second magnetic plate fixed on the side of the outer magnetic portion facing the lower diaphragm.
  • a magnetic conductive plate, the second magnetic conductive plate is fixed to the basin frame, and the first clamping plate and the second clamping plate are both magnetic conductive plates.
  • At least one of the first clamping plate and the second magnetically conductive plate has a recess formed in a position facing the leakage passage, and the opening of the recess faces the leakage passage.
  • the sound emitting device further includes an upper end cover and a lower end cover, the upper diaphragm is sandwiched between the basin frame and the upper end cover, and the upper end cover is provided for the upper diaphragm to emit sound outwards.
  • the lower diaphragm is sandwiched between the basin frame and the lower end cover, and the lower end cover has a second sound hole for the lower diaphragm to emit sound outward.
  • the sound generating device of the present invention drives the upper diaphragm and the lower diaphragm to vibrate and produce sound through the upper voice coil and the lower voice coil, so that the upper diaphragm and the lower diaphragm
  • the diaphragm can work independently, and when the upper diaphragm vibrates, the airflow in the first rear cavity can circulate with the outside through the first leak hole.
  • the second rear cavity When the lower diaphragm vibrates, the second rear cavity
  • the airflow inside can circulate with the outside through the second leakage hole; at the same time, due to the magnetic circuit system, the first rear cavity and the second rear cavity are not connected to each other, so that the sound device can not only meet the requirements of double-sided The need for sound production, and the upper diaphragm and the lower diaphragm do not affect each other during the vibration process.
  • the upper voice coil and the lower voice coil into the inner magnetic gap and the outer magnetic gap of the magnetic circuit system, respectively, the upper diaphragm and the lower diaphragm share the same A magnetic circuit system, thereby improving the utilization rate of the magnetic circuit.
  • Figure 1 is an exploded view of a preferred embodiment of the sound generating device of the present invention
  • Fig. 2 is a perspective view of the sound generating device shown in Fig. 1 after being assembled;
  • Fig. 3 is a cross-sectional view of the sound emitting device shown in Fig. 2 along the A-A direction;
  • Fig. 4 is a cross-sectional view of the sound emitting device shown in Fig. 2 along the B-B direction;
  • FIG. 5 is a schematic structural diagram of part of the structure of the sound generating device shown in FIG. 1 after being assembled;
  • FIG. 6 is a schematic diagram of the assembled structure of the magnetic circuit system in the sound generating device shown in FIG. 1;
  • FIG. 7 is a schematic view of the structure of the magnetic circuit system shown in FIG. 6 from another angle.
  • the sound emitting device 100 has two sound emitting surfaces, and is suitable for electronic devices with double-sided sounding requirements, such as double-sided screen mobile phones.
  • the sound generating device 100 includes a basin frame 1, a vibration system 3 fixed to the basin frame 1 and a magnetic circuit system 5 that drives the vibration system 3 to vibrate and produce sound.
  • the basin frame 1 is provided with a first leak hole 1A and a second leak hole 1B through it.
  • the basin frame 1 has a rectangular structure, and the first leakage hole 1A and the second leakage hole 1B are located on the same side wall of the basin frame 1.
  • the first leakage hole 1A and the second leakage hole 1B are located on the side wall along the long axis direction, and may be located on the same side wall along the long axis direction, or the same side wall along the long axis direction. Of course, it can also be located on the side wall along the short axis direction, which is not limited here.
  • the vibration system 3 includes a first vibration system 31 and a second vibration system 33 arranged relatively spaced apart.
  • the first vibration system 31 includes an upper diaphragm 311 and an upper voice coil 313 that drives the upper diaphragm 311 to vibrate and produce sound.
  • the second vibration system 33 includes a lower diaphragm 331 and a lower voice coil 333 that drives the lower diaphragm 331 to vibrate and produce sound.
  • the upper diaphragm 311 and the lower diaphragm 331 are respectively fixed to the frame 1 The opposite ends and enclose the basin frame 1 to form a receiving space 100A.
  • the lower voice coil 333 and the lower diaphragm 331 are connected by a skeleton 36.
  • the skeleton 36 includes a first connecting portion 361 connected to the lower diaphragm 331, and is connected to the lower voice coil 331.
  • the second connecting portion 362 connected by 333 and the third connecting portion 363 connecting the first connecting portion 361 and the second connecting portion 362.
  • first connecting portion 361 and the second connecting portion 362 both have a ring structure. It can be understood that the implementation of the first connecting portion 361 and the second connecting portion 362 is not limited to this; for example, in other embodiments, the first connecting portion 361 may be provided in a flat plate shape; The second connecting portion 362 may be configured to be composed of a plurality of split structures, and each split structure is connected to the lower voice coil 333 respectively.
  • the skeleton 36 is an integrally formed structure. It can be understood that, in other embodiments, the first connecting portion 361, the second connecting portion 362, and the third connecting portion 363 may be formed by welding.
  • the first vibration system 31 further includes an upper dome 315 arranged in the receiving space 100A
  • the second vibration system 33 further includes a lower dome arranged in the receiving space 100A 335.
  • the upper dome 37 is connected to the upper diaphragm 311 and the upper voice coil 313 on opposite sides of the vibration direction X, respectively
  • the lower dome 38 is connected to the opposite sides of the lower dome 38 along the vibration direction X. It is connected to the first connecting portion 361 and the lower diaphragm 331.
  • the upper dome 315 and the lower dome 335 may also be arranged outside the receiving space 100A, and the upper diaphragm 311 is opposite to each other in the vibration direction X.
  • the sides are respectively connected to the upper voice coil 313 and the upper dome 315, and the lower diaphragm 331 is respectively connected to the lower dome 335 and the first connecting portion 361 along opposite sides of the vibration direction X .
  • the sound generating device 100 further includes an upper end cover 7 and a lower end cover 9.
  • the upper diaphragm 311 is sandwiched between the basin frame 1 and the upper end cover 7.
  • the upper end cover 7 has a first sounding hole 71 for the upper diaphragm 311 to emit sound outward
  • the lower diaphragm 331 is sandwiched between the basin frame 1 and the lower end cover 9, and the lower end
  • the cover 9 has a second sound hole 91 for the lower diaphragm 331 to sound outward.
  • the arrangement of the upper end cover 7 and the lower end cover 9 can better fix the upper diaphragm 311 and the lower diaphragm 331 on the basin frame 1.
  • the magnetic circuit system 5 includes a first splint 54 fixed to the basin frame 1 and a second splint 55 opposite to and spaced apart from the first splint 54.
  • the through hole 54A opposite to the second clamping plate 55.
  • the magnetic circuit system 5 also includes an inner magnetic part 51, a middle magnetic part 52 arranged on the peripheral side of the inner magnetic part 51 and forming an inner magnetic gap 5A between the inner magnetic part 51, and a middle magnetic part 52 arranged on the inner magnetic part 51.
  • the outer magnetic portion 53 of the outer magnetic gap 5B is formed between the peripheral side of the portion 52 and the middle magnetic portion 52.
  • the first clamping plate 54 is fixed to the middle magnetic portion 52 and the outer magnetic portion 53 faces the upper
  • the second clamping plate 55 is fixed to the side of the inner magnetic portion 51 and the middle magnetic portion 52 facing the lower diaphragm 33.
  • the inner magnetic portion 51 faces the through hole 54A
  • the upper voice coil 313 is inserted into the inner magnetic gap 5A through the through hole 54A
  • the lower voice coil 333 is inserted into the outer magnetic gap 5B.
  • the first splint 54, the second splint 55, and the middle magnetic part 52 separate the receiving space 100A into a first rear cavity 100B and a second rear cavity 100C that are not connected to each other (specifically, the The upper diaphragm 311, the basin frame 1, the first splint 54, the middle magnetic portion 52, and the second splint 55 surround the first rear cavity 100B, and the lower diaphragm 331, The basin frame 1, the first splint 54, the middle magnetic part 52, and the second splint 55 surround the second rear cavity 100C), the first rear cavity 100B and the first
  • the leakage hole 1A communicates with the outside through the first leakage hole 1A
  • the second rear cavity 100C communicates with the second leakage hole 1B and communicates with the outside through the second leakage hole 1B.
  • the upper voice coil 313 After the upper voice coil 313 is energized, under the magnetic force of the magnetic circuit system 5, the upper diaphragm 311 vibrates along with the upper voice coil 313; after the lower voice coil 333 is energized, the magnetic Under the action of the magnetic force of the circuit system 5, the lower diaphragm 331 and the skeleton 36 vibrate together with the lower voice coil 333.
  • the sound emitting device 100 can not only meet the requirements of double-sided sound generation, but also
  • the diaphragm 311 and the lower diaphragm 331 can work independently, and when the upper diaphragm 311 vibrates, the airflow in the first rear cavity 100B can circulate with the outside through the first leakage hole 1A, and the lower When the diaphragm 331 vibrates, the airflow in the second rear cavity 100C can circulate with the outside through the second leakage hole 1B.
  • the first back cavity 100B and the second back cavity 100C are not connected to each other, so that the upper diaphragm 311 and the lower diaphragm 331 do not affect each other during vibration.
  • the upper voice coil 313 and the lower voice coil 333 are inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 311 and the The diaphragm 331 described below shares the same magnetic circuit system, which improves the utilization rate of the magnetic circuit.
  • the outer magnetic portion 53 has a leakage passage 53A that communicates the outer magnetic gap 5B and the second leakage hole 1B, and the leakage passage 53A is arranged directly opposite to the second leakage hole 1B. That is, the second leakage hole 1B communicates with the second rear cavity 100C through the outer magnetic gap 5B and the leakage passage 53A (that is, the second leakage hole 1B is indirectly connected to the second rear cavity 100C). 100C connection). It is understandable that, in other embodiments, the second leakage hole 1B may be located at a position corresponding to the basin frame 1 and the second rear cavity 100C (that is, the second leakage hole 1B is directly connected to the second rear cavity 100C). The second rear cavity 100C is connected).
  • the outer magnetic part may not have a leakage channel, but the height of the outer magnetic part 53 in the vibration direction cannot be too high to prevent the outer magnetic part 53 from completely covering the second leakage hole 1B,
  • the second leakage hole 1B should extend in the direction of the lower diaphragm 331 to exceed the outer magnetic portion 53 to communicate the outer magnetic gap 5B with the outside without the outer magnetic portion 53 being provided with a leakage channel.
  • the magnetic circuit system 5 further includes a first magnetic conductive plate 56 fixed to the inner magnetic portion 51 facing the upper diaphragm 311, and a first magnetic conductive plate 56 fixed to the outer magnetic portion 53 facing the upper diaphragm 311.
  • the second magnetic conductive plate 57 on the side of the lower diaphragm 331 is fixed to the basin frame 1, and the first clamping plate 54 and the second clamping plate 55 are both magnetic conductive plates.
  • the inner magnetic gap 5A and the outer magnetic gap 5A can be effectively increased.
  • the magnetic flux in the magnetic gap 5B can thereby improve the acoustic performance of the sound emitting device 100, and at the same time, it is also conducive to the light and thin design of the sound emitting device 100.
  • the magnetic circuit system 5 can be better held on the basin frame 1.
  • first clamping plate 54 and the first magnetic conductive plate 56 are located on the same horizontal plane, and the second clamping plate 55 and the second magnetic conductive plate 57 are also located on the same horizontal plane.
  • At least one of the first clamping plate 54 and the second magnetic conductive plate 57 is recessed and formed with a recess 58 at a position facing the leakage channel 53A, and the opening of the recess 58 faces The leakage passage 53A.
  • the concave portion 58 is formed in a position where the second magnetic conductive plate 57 is facing the leakage channel 53A.
  • the arrangement of the recess 58 can further increase the volume of the passage connecting the outer magnetic gap 5B and the second leakage hole 1B.
  • the inner magnetic part 51 is a first permanent magnet. It can be understood that, in other embodiments, the inner magnetic portion 51 may also be formed by superimposing two, three, etc. first permanent magnets along the vibration direction X, and there may also be two adjacent first permanent magnets. Clamp the pole core.
  • the middle magnetic part 52 is a second permanent magnet. It is understandable that in other embodiments, the middle magnetic part 52 may be formed by superimposing two or three second permanent magnets in a continuous ring structure along the vibration direction X, and two adjacent second permanent magnets A pole core can also be sandwiched between the permanent magnets.
  • the outer magnetic portion 53 is composed of a plurality of third permanent magnets arranged around the middle magnetic portion 52, and two adjacent third permanent magnets are arranged at intervals. Wherein, the two third permanent magnets adjacent to the second leakage hole 1B are spaced apart to form the leakage passage 53A. It can be understood that the arrangement of the outer magnetic portion 53 is not limited to this.
  • the outer magnetic portion 53 may also be a third permanent magnet in a ring structure. Accordingly, The position of the third permanent magnet corresponding to the second leakage hole needs to be provided with a leakage passage connecting the outer magnetic gap and the second leakage hole.
  • the first permanent magnet, the second permanent magnet, and the third permanent magnet mentioned above are usually made of magnetic steel. It is understandable that the first permanent magnet, the second permanent magnet, and the third permanent magnet can also be natural magnets.
  • the sound emitting device of the present invention drives the upper diaphragm 311 and the lower diaphragm 331 to vibrate and produce sound through the upper voice coil 313 and the lower voice coil 333, respectively, so that the sound emitting device 100 can not only
  • the requirement for double-sided sound is met, and the upper diaphragm 311 and the lower diaphragm 331 can work independently, and when the upper diaphragm 311 vibrates, the airflow in the first rear cavity 100B can pass through the first A leak hole 1A communicates with the outside world.
  • the airflow in the second rear cavity 100C can circulate with the outside world through the second leak hole 1B; at the same time, because the magnetic circuit system 5 makes The first back cavity 100B and the second back cavity 100C are not connected to each other, so that the upper diaphragm 311 and the lower diaphragm 331 do not affect each other during vibration.
  • the upper voice coil 313 and the lower voice coil 333 into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 311 and the The diaphragm 331 described below shares the same magnetic circuit system, thereby improving the utilization rate of the magnetic circuit.

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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

本发明提供了一种两个发声面能单独振动发声的发声器件，其包括盆架、振动系统及磁路系统，振动系统包括第一振动系统和第二振动系统，第一振动系统包括上振膜及上音圈，第二振动系统包括下振膜及下音圈，上振膜、下振膜及盆架围合形成收容空间，磁路系统包括第一夹板及第二夹板，磁路系统包括内磁部、与内磁部之间形成内磁间隙的中磁部及与中磁部之间形成外磁间隙的外磁部，第一夹板、第二夹板及中磁部将收容空间分隔为互不连通的第一后腔和第二后腔，盆架上贯穿设有将第一后腔与外界连通的第一泄漏孔及将第二后腔与外界连通的第二泄漏孔。本发明中的发声器件，显著提高了磁路利用率。

Description

发声器件 技术领域
本发明涉及声电领域，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，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的发声器件被大量应用到现在的智能移动设备之中。
相关技术中的发声器件包括盆架、固定于盆架的振动系统和驱动振动系统振动发声的磁路系统，振动系统包括分别固定于盆架的相对两侧的上振膜和下振膜以及用以驱动上振膜和下振膜振动发声的音圈。这样的发声器件由于具有上振膜和下振膜两个发声面，因此，可以满足双面发声要求的特殊场合的需要。然而，该发声器件的上振膜和下振膜仅由一个音圈驱动，使得上振膜和下振膜不能单独振动发声，其限制了使用场合。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术问题
本发明的目的在于提供一种发声器件，以解决相关技术中的发声器件的两个发声面不能单独振动发声的问题。
 技术解决方案
为了达到上述目的，本发明提供了一种发声器件，包括盆架以及固持于所述盆架的振动系统和磁路系统，所述振动系统包括相对间隔设置的第一振动系统和第二振动系统，所述第一振动系统包括上振膜及驱动所述上振膜振动发声的上音圈，所述第二振动系统包括下振膜及驱动所述下振膜振动发声的下音圈，所述上振膜和所述下振膜分别固定于所述盆架的相对两端并与所述盆架围合形成收容空间，所述磁路系统包括固定于所述盆架且呈环状的第一夹板以及与所述第一夹板相对间隔设置的第二夹板，所述第一夹板中间设有贯穿其上并与所述第二夹板相对的通孔；所述磁路系统包括固定于所述第二夹板的内磁部、设于所述内磁部周侧且与所述内磁部之间形成内磁间隙的中磁部及设于所述中磁部周侧且与所述中磁部之间形成外磁间隙的外磁部，所述第一夹板固定于所述中磁部和所述外磁部朝向所述上振膜的一侧，所述第二夹板固定于所述内磁部和所述中磁部朝向所述下振膜的一侧，所述内磁部正对所述通孔，所述上音圈通过所述通孔插入所述内磁间隙内，所述下音圈插入所述外磁间隙内；所述第一夹板、所述第二夹板及所述中磁部将所述收容空间分隔为互不连通的第一后腔和第二后腔；所述盆架上贯穿设有将所述第一后腔与外界连通的第一泄漏孔及与将所述第二后腔与外界连通的第二泄漏孔。
优选地，所述外磁部具有连通所述外磁间隙和所述第二泄漏孔的泄漏通道，所述泄漏通道与所述第二泄漏孔正对设置。
优选地，所述外磁部由环绕所述中磁部设置的多个第三永磁体构成，且相邻两所述第三永磁体间隔设置，其中，与所述第二泄漏孔相邻的两个所述第三永磁体间隔设置形成所述泄漏通道。
优选地，所述下音圈和所述下振膜通过骨架连接，所述骨架包括与所述下振膜连接的第一连接部、与所述下音圈连接的第二连接部及连接所述第一连接部和所述第二连接部的第三连接部。
优选地，所述第一连接部和所述第二连接部均呈环状结构。
优选地，所述骨架为一体成型结构。
优选地，所述第一振动系统还包括设于所述收容空间内的上球顶，所述第二振动系统还包括设于所述收容空间内的下球顶，所述上球顶沿振动方向上的相对两侧分别与所述上振膜和所述上音圈连接，所述下球顶沿振动方向上的相对两侧分别与所述第一连接部和所述下振膜连接。
优选地，所述盆架呈矩形结构，所述第一泄漏孔和所述第二泄漏孔位于所述盆架沿长轴方向的同一侧壁上。
优选地，所述磁路系统还包括固定于所述内磁部朝向所述上振膜一侧的第一导磁板及固定于所述外磁部朝向所述下振膜一侧的第二导磁板，所述第二导磁板固定于所述盆架，所述第一夹板和所述第二夹板均为导磁板。
优选地，所述第一夹板和所述第二导磁板中至少其中一方正对所述泄漏通道的位置上凹陷形成有凹陷部，所述凹陷部的开口朝向所述泄漏通道。
优选地，所述发声器件还包括上端盖和下端盖，所述上振膜夹设于所述盆架和所述上端盖之间，所述上端盖具有用于所述上振膜向外发声的第一发声孔，所述下振膜夹设于所述盆架和所述下端盖之间，所述下端盖具有用于所述下振膜向外发声的第二发声孔。
 有益效果
与相关技术相比，本发明的发声器件通过所述上音圈和所述下音圈分别驱动所述上振膜和所述下振膜振动发声，从而使得所述上振膜和所述下振膜能够独立工作，且所述上振膜振动时，所述第一后腔内的气流能通过所述第一泄漏孔与外界流通，所述下振膜振动时，所述第二后腔内的气流能通过所述第二泄漏孔与外界流通；同时，由于所述磁路系统使得所述第一后腔和所述第二后腔互不连通，从而使得发声器件不仅能满足双面发声的需求，而且所述上振膜和所述下振膜振动过程中互不影响。此外，通过将所述上音圈和所述下音圈分别插入所述磁路系统的所述内磁间隙和所述外磁间隙内，使得所述上振膜和所述下振膜共用同一个磁路系统，从而提高了磁路利用率。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明发声器件一较佳实施例的分解图；
图2为图1所示发声器件组装后的立体图；
图3为图2所示发声器件沿A-A方向的剖示图；
图4为图2所示发声器件沿B-B方向的剖示图；
图5为图1所示发声器件中部分结构组装后的结构示意图；
图6为图1所示发声器件中磁路系统组装后的结构示意图；
图7为图6所示磁路系统另一角度的结构示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请结合参阅图1至图7，发声器件100具有两个发声面，可适用于具有双面发声需求的电子设备，如双面屏手机等。发声器件100包括盆架1以及固持于所述盆架1的振动系统3和驱动所述振动系统3振动发声的磁路系统5。
所述盆架1上贯穿设有第一泄漏孔1A和第二泄漏孔1B。如图1、图2及图3所示，所述盆架1呈矩形结构，所述第一泄漏孔1A和所述第二泄漏孔1B位于所述盆架1的同一侧壁上。具体的，所述第一泄漏孔1A和所述第二泄漏孔1B位于沿长轴方向的侧壁上，可位于沿长轴方向的同一侧壁上，也可是沿长轴方向的同一侧壁上，当然也可位于沿短轴方向的侧壁上，在此不做限定。
所述振动系统3包括相对间隔设置的第一振动系统31和第二振动系统33，所述第一振动系统31包括上振膜311及驱动所述上振膜311振动发声的上音圈313，所述第二振动系统33包括下振膜331及驱动所述下振膜331振动发声的下音圈333，所述上振膜311和所述下振膜331分别固定于所述盆架1的相对两端并与所述盆架1围合形成收容空间100A。
在本实施例中，所述下音圈333和所述下振膜331通过骨架36连接，所述骨架36包括与所述下振膜331连接的第一连接部361、与所述下音圈333连接的第二连接部362及连接所述第一连接部361和所述第二连接部362的第三连接部363。
在本实施例中，所述第一连接部361和所述第二连接部362均呈环状结构。可以理解是，所述第一连接部361和所述第二连接部362实施方式，并不局限于此；例如，在其他实施例中，所述第一连接部361可以设置成呈平板状；所述第二连接部362可以设置成由多个分体结构构成，且各个分体结构分别与所述下音圈333连接。
在本实施例中，所述骨架36为一体成型结构。可以理解的是，在其他实施例中，所述第一连接部361、所述第二连接部362及所述第三连接部363可以通过焊接成型。
为了加强所述上振膜311和所述下振膜331振动效果以提高发声器件100的声学性能。在本实施例中，所述第一振动系统31还包括设于所述收容空间100A内的上球顶315，所述第二振动系统33还包括设于所述收容空间100A内的下球顶335，所述上球顶37沿振动方向X上的相对两侧分别与所述上振膜311和所述上音圈313连接，所述下球顶38沿振动方向X上的相对两侧分别与所述第一连接部361和所述下振膜331连接。可以理解的是，在其他实施例中，所述上球顶315和所述下球顶335还可以设于所述收容空间100A外，且所述上振膜311沿振动方向X上的相对两侧分别与所述上音圈313和所述上球顶315连接，所述下振膜331沿振动方向X上的相对两侧分别与所述下球顶335和所述第一连接部361连接。
如图1、图3及图4所示，所述发声器件100还包括上端盖7和下端盖9，所述上振膜311夹设于所述盆架1和所述上端盖7之间，所述上端盖7具有用于所述上振膜311向外发声的第一发声孔71，所述下振膜331夹设于所述盆架1和所述下端盖9之间，所述下端盖9具有用于所述下振膜331向外发声的第二发声孔91。所述上端盖7和所述下端盖9的设置，可以使得所述上振膜311和所述下振膜331更好的固定在所述盆架1上。
所述磁路系统5包括固定于所述盆架1的第一夹板54以及与所述第一夹板54相对且间隔设置的第二夹板55，所述第一夹板54中间设有贯穿其上并与所述第二夹板55相对的通孔54A。所述磁路系统5还包括内磁部51、设于所述内磁部51周侧且与所述内磁部51之间形成内磁间隙5A的中磁部52、设于所述中磁部52周侧且与所述中磁部52之间形成外磁间隙5B的外磁部53，所述第一夹板54固定于所述中磁部52和所述外磁部53朝向所述上振膜31的一侧，所述第二夹板55固定于所述内磁部51和所述中磁部52朝向所述下振膜33的一侧。其中，所述内磁部51正对所述通孔54A，所述上音圈313通过所述通孔54A插入所述内磁间隙5A内，所述下音圈333插入所述外磁间隙5B内，所述第一夹板54、所述第二夹板55及所述中磁部52将所述收容空间100A分隔为互不连通的第一后腔100B和第二后腔100C（具体地，所述上振膜311、所述盆架1、所述第一夹板54、所述中磁部52、所述第二夹板55围设形成所述第一后腔100B，所述下振膜331、所述盆架1、所述第一夹板54、所述中磁部52、所述第二夹板55围设形成所述第二后腔100C），所述第一后腔100B与所述第一泄漏孔1A连通并通过第一泄漏孔1A与外界连通，所述第二后腔100C与所述第二泄漏孔1B连通并通过第二泄漏孔1B与外界连通。所述上音圈313通电后，在所述磁路系统5的磁力作用下，所述上振膜311随所述上音圈313一同振动；所述下音圈333通电后，在所述磁路系统5的磁力作用下，所述下振膜331和所述骨架36随所述下音圈333一同振动。由于所述上振膜311和所述下振膜331分别通过所述上音圈313和所述下音圈333驱动发声，从而使得发声器件100不仅能满足双面发声的需求，而且所述上振膜311和所述下振膜331能够独立工作，且所述上振膜311振动时，所述第一后腔100B内的气流能通过所述第一泄漏孔1A与外界流通，所述下振膜331振动时，所述第二后腔100C内的气流能通过所述第二泄漏孔1B与外界流通。同时，由于所述磁路系统5使得所述第一后腔100B和所述第二后腔100C互不连通，从而使得所述上振膜311和所述下振膜331振动过程中互不影响。此外，又由于所述上音圈313和所述下音圈333分别插入所述磁路系统5的所述内磁间隙5A和所述外磁间隙5B内，使得所述上振膜311和所述下振膜331共用同一个磁路系统，提高了磁路利用率。
在本实施例中，所述外磁部53具有连通所述外磁间隙5B和所述第二泄漏孔1B的泄漏通道53A，所述泄漏通道53A与所述第二泄漏孔1B正对设置。也就是说，所述第二泄漏孔1B通过所述外磁间隙5B和所述泄漏通道53A与所述第二后腔100C连通（即所述第二泄漏孔1B间接与所述第二后腔100C连通）。可以理解的是，在其他实施例中，所述第二泄漏孔1B可以位于所述盆架1与所述第二后腔100C对应的位置上（即所述第二泄漏孔1B直接与所述第二后腔100C连通），相应地，所述外磁部可以不具有泄漏通道，但外磁部53沿振动方向的高度不能过高，以防止外磁部53完全覆盖第二泄漏孔1B，话句话说，第二泄漏孔1B应朝向下振膜331方向延伸至超过外磁部53，以在外磁部53不设置泄漏通道的情况下将外磁间隙5B与外界连通。
在本实施例中，所述磁路系统5还包括固定于所述内磁部51朝向所述上振膜311一侧的第一导磁板56及固定于所述外磁部53朝向所述下振膜331一侧的第二导磁板57，所述第二导磁板57固定于所述盆架1，所述第一夹板54和所述第二夹板55均为导磁板。通过所述第一夹板54、所述第二夹板55、所述第一导磁板56及所述第二导磁板57的导磁作用，可以有效增加所述内磁间隙5A和所述外磁间隙5B内的磁通量，从而可以提高发声器件100的声学性能，同时也有利于发声器件100的轻薄化设计。同时，由于所述第一夹板54和所述第二导磁板57均固定于所述盆架1，可以使得所述磁路系统5更好的固持于所述盆架1上。
在本实施例中，所述第一夹板54和所述第一导磁板56位于同一水平面上，所述第二夹板55和所述第二导磁板57也位于同一水平面上。
在本实施例中，所述第一夹板54和所述第二导磁板57中至少其中一方正对所述泄漏通道53A的位置上凹陷形成有凹陷部58，所述凹陷部58的开口朝向所述泄漏通道53A。如图1及图3所示，所述第二导磁板57正对所述泄漏通道53A的位置上凹陷形成有所述凹陷部58。所述凹陷部58的设置可以进一步增加连通所述外磁间隙5B和所述第二泄漏孔1B的通道体积。
在本实施例中，所述内磁部51为第一永磁体。可以理解的是，在其他实施例中，所述内磁部51也可以由两个、三个等第一永磁体沿振动方向X叠加形成，且相邻两个第一永磁体之间还可以夹设极芯。
在本实施例中，所述中磁部52为第二永磁体。可以理解的是，在其他实施例中，所述中磁部52可以由两个、三个等呈连续的环状结构的第二永磁体沿振动方向X叠加形成，且相邻两个第二永磁体之间还可以夹设极芯。
在本实施例中，所述外磁部53由环绕所述中磁部52设置的多个第三永磁体构成，且相邻两所述第三永磁体之间间隔设置。其中，与所述第二泄漏孔1B相邻的两个所述第三永磁体间隔设置形成所述泄漏通道53A。可以理解的是，所述外磁部53的设置方式并不局限于此，例如，在其他实施例中，所述外磁部53也可以为呈环状结构的第三永磁体，相应地，所述第三永磁体与所述第二泄漏孔对应的位置上需开设连通所述外磁间隙和所述第二泄漏孔的泄漏通道。
上述中的所述第一永磁体、所述第二永磁体及所述第三永磁体通常采用磁钢。可以理解的是，所述第一永磁体、所述第二永磁体及所述第三永磁体也可以选择天然磁石。
与相关技术相比，本发明的发声器件通过所述上音圈313和所述下音圈333分别驱动所述上振膜311和所述下振膜331振动发声，从而使得发声器件100不仅能满足双面发声的需求，而且所述上振膜311和所述下振膜331能够独立工作，且所述上振膜311振动时，所述第一后腔100B内的气流能通过所述第一泄漏孔1A与外界流通，所述下振膜331振动时，所述第二后腔100C内的气流能通过所述第二泄漏孔1B与外界流通；同时，由于所述磁路系统5使得所述第一后腔100B和所述第二后腔100C互不连通，从而使得所述上振膜311和所述下振膜331振动过程中互不影响。此外，通过将所述上音圈313和所述下音圈333分别插入所述磁路系统5的所述内磁间隙5A和所述外磁间隙5B内，使得所述上振膜311和所述下振膜331共用同一个磁路系统，从而提高了磁路利用率。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (11)

  1. 一种发声器件，包括盆架以及固持于所述盆架的振动系统和磁路系统，所述振动系统包括相对间隔设置的第一振动系统和第二振动系统，其特征在于，所述第一振动系统包括上振膜及驱动所述上振膜振动发声的上音圈，所述第二振动系统包括下振膜及驱动所述下振膜振动发声的下音圈，所述上振膜和所述下振膜分别固定于所述盆架的相对两端并与所述盆架围合形成收容空间，所述磁路系统包括固定于所述盆架且呈环状的第一夹板以及与所述第一夹板相对间隔设置的第二夹板，所述第一夹板中间设有贯穿其上并与所述第二夹板相对的通孔；所述磁路系统包括固定于所述第二夹板的内磁部、设于所述内磁部周侧且与所述内磁部之间形成内磁间隙的中磁部及设于所述中磁部周侧且与所述中磁部之间形成外磁间隙的外磁部，所述第一夹板固定于所述中磁部和所述外磁部朝向所述上振膜的一侧，所述第二夹板固定于所述内磁部和所述中磁部朝向所述下振膜的一侧，所述内磁部正对所述通孔，所述上音圈通过所述通孔插入所述内磁间隙内，所述下音圈插入所述外磁间隙内；所述第一夹板、所述第二夹板及所述中磁部将所述收容空间分隔为互不连通的第一后腔和第二后腔；所述盆架上贯穿设有将所述第一后腔与外界连通的第一泄漏孔及将所述第二后腔与外界连通的第二泄漏孔。
  2. 根据权利要求1所述的发声器件，其特征在于，所述外磁部具有连通所述外磁间隙和所述第二泄漏孔的泄漏通道，所述泄漏通道与所述第二泄漏孔正对设置。
  3. 根据权利要求2所述的发声器件，其特征在于，所述外磁部由环绕所述中磁部设置的多个第三永磁体构成，且相邻两所述第三永磁体间隔设置，其中，与所述第二泄漏孔相邻的两个所述第三永磁体间隔设置形成所述泄漏通道。
  4. 根据权利要求1所述的发声器件，其特征在于，所述下音圈和所述下振膜通过骨架连接，所述骨架包括与所述下振膜连接的第一连接部、与所述下音圈连接的第二连接部及连接所述第一连接部和所述第二连接部的第三连接部。
  5. 根据权利要求4所述的发声器件，其特征在于，所述第一连接部和所述第二连接部均呈环状结构。
  6. 根据权利要求4或5所述的发声器件，其特征在于，所述骨架为一体成型结构。
  7. 根据权利要求4所述的发声器件，其特征在于，所述第一振动系统还包括设于所述收容空间内的上球顶，所述第二振动系统还包括设于所述收容空间内的下球顶，所述上球顶沿振动方向上的相对两侧分别与所述上振膜和所述上音圈连接，所述下球顶沿振动方向上的相对两侧分别与所述第一连接部和所述下振膜连接。
  8. 根据权利要求1所述的发声器件，其特征在于，所述盆架呈矩形结构，所述第一泄漏孔和所述第二泄漏孔位于所述盆架沿长轴方向的同一侧壁上。
  9. 根据权利要求1所述的发声器件，其特征在于，所述磁路系统还包括固定于所述内磁部朝向所述上振膜一侧的第一导磁板及固定于所述外磁部朝向所述下振膜一侧的第二导磁板，所述第二导磁板固定于所述盆架，所述第一夹板和所述第二夹板均为导磁板。
  10. 根据权利要求1所述的发声器件，其特征在于，所述第一夹板和所述第二导磁板中至少其中一方正对所述泄漏通道的位置上凹陷形成有凹陷部，所述凹陷部的开口朝向所述泄漏通道。
  11. 根据权利要求1所述的发声器件，其特征在于，所述发声器件还包括上端盖和下端盖，所述上振膜夹设于所述盆架和所述上端盖之间，所述上端盖具有用于所述上振膜向外发声的第一发声孔，所述下振膜夹设于所述盆架和所述下端盖之间，所述下端盖具有用于所述下振膜向外发声的第二发声孔。
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