WO2016155327A1 - 发声器模组 - Google Patents

发声器模组 Download PDF

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Publication number
WO2016155327A1
WO2016155327A1 PCT/CN2015/094897 CN2015094897W WO2016155327A1 WO 2016155327 A1 WO2016155327 A1 WO 2016155327A1 CN 2015094897 W CN2015094897 W CN 2015094897W WO 2016155327 A1 WO2016155327 A1 WO 2016155327A1
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WO
WIPO (PCT)
Prior art keywords
sound
sound outlet
pressure regulating
vibration system
regulating portion
Prior art date
Application number
PCT/CN2015/094897
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English (en)
French (fr)
Inventor
祖峰磊
郭晓冬
Original Assignee
歌尔声学股份有限公司
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Publication date
Application filed by 歌尔声学股份有限公司 filed Critical 歌尔声学股份有限公司
Priority to US15/562,857 priority Critical patent/US9955251B1/en
Publication of WO2016155327A1 publication Critical patent/WO2016155327A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
    • H04R1/2888—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the invention relates to the technical field of electroacoustic products, and in particular to a sound generator module.
  • the sounder module is an important acoustic component of a portable electronic device for converting between an electrical signal and a sound signal, and is an energy conversion device.
  • the existing sounder module usually comprises a casing, the casing contains a vibration system and a magnetic circuit system, and the sounding port of the sounder module is arranged at a position corresponding to the vibration system on the outer casing, and the sound outlet usually corresponds to the center of the vibration system. The position is set and the port of the sound outlet is flush with the outer surface of the housing.
  • some sounder modules often have a raised upper sound port design, that is, the sound port has a long passage, and the port is higher than the outer surface of the outer casing;
  • the need for system assembly often does not place it in the center of the vibration system.
  • the asymmetrical rising mouth sound outlet will cause the sound field of the sound chamber of the sounder module to be asymmetrically distributed, the sound pressure at the sound outlet is released, the sound field energy at the sound outlet is concentrated, and the sound energy is relatively concentrated.
  • the reaction of the region to the vibration system is greater, resulting in an asymmetric distribution of the sound pressure on the surface of the diaphragm, as shown in Figure 5.
  • the asymmetrically placed sound outlet will cause the acoustic load force distribution on the diaphragm surface to be asymmetric, which will directly lead to increased polarization of the vibration system and increased harmonic distortion.
  • the technical problem to be solved by the present invention is to provide a sounder module capable of balancing the asymmetry of the sound field distribution in the front sound cavity and locally increasing the sound pressure distribution on the surface of the diaphragm to make it and the rest Partial phase balance reduces system polarization and reduces harmonic distortion.
  • the technical solution of the present invention is:
  • a sound generator module includes a casing, wherein the casing houses a vibration system and a magnetic circuit system, and an acoustic port is disposed on the casing corresponding to the vibration system, and the sound outlet is deviated from the vibration system
  • the center position is set, and the sound outlet port is a rising port of the port surface;
  • the vibration system includes a diaphragm, and the diaphragm is provided with a dome near the middle of the sound outlet side.
  • the front projection area of the sound outlet is provided with a pressure regulating portion, and the pressure regulating portion is raised above the other portion of the dome and protrudes in the direction of the sound outlet.
  • the outer casing comprises an upper shell and a lower shell joined together, and the sound outlet is disposed on the upper shell.
  • the pressure regulating portion is a curved surface structure with a low center and a high center.
  • the pressure regulating portion is a planar structure in which a peripheral portion is connected to other portions of the dome by a slope.
  • the pressure regulating portion is a wave surface structure.
  • the sound outlet is disposed near a side edge of the dome.
  • the port of the sound outlet is covered with a dustproof net.
  • the shape and size of the pressure regulating portion are adapted to the orthographic projection area of the sound outlet.
  • the pressure regulating portion on the top of the ball is formed by a hot pressing process.
  • the sounder module of the present invention comprises a casing
  • the sounding port is provided at a position corresponding to the vibration system on the casing, the sounding port is disposed away from the center position of the vibration system, and the sounding port is an ascending port of the port surface higher than the surface of the casing;
  • the vibration system The diaphragm is provided near the middle of the sound outlet side with a dome, and the orthographic projection area corresponding to the sound outlet on the top of the ball is provided with a pressure regulating portion, and the pressure regulating portion is higher than the other portions of the dome and protrudes toward the sound outlet.
  • a pressure regulating portion protruding in the direction of the sound outlet is designed on the top of the ball at the position of the front projection area of the sound outlet, and the sounding portion can re-adjust the sound of the sounding port area and the non-sounding mouth area of the front sound chamber.
  • the proportion of the volume, when the vibration system begins to radiate the sound pressure, the re-adjusted sound volume can balance the asymmetry of the sound field distribution in the front acoustic cavity, and locally increase the sound pressure distribution on the surface of the diaphragm, so that the surface of the diaphragm is located in the sound outlet area.
  • the sound pressure is balanced with the sound pressure of other parts, thereby effectively reducing the polarization of the system and improving the harmonic distortion of the sounder module.
  • the sounder module of the present invention solves the technical problem of asymmetric sound field distribution in the front sound cavity of the prior art sounder module.
  • the sounder of the present invention can balance the asymmetry of the sound field distribution of the front sound cavity and locally increase the surface of the diaphragm film.
  • the sound pressure distribution balances with the rest, effectively reducing system polarization and reducing harmonic distortion.
  • FIG. 1 is a schematic structural view of a first embodiment of a sound generator module of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • FIG. 3 is a schematic structural view of a second embodiment of the sound generator module of the present invention.
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 3;
  • Figure 5 is a sound pressure distribution diagram of the diaphragm surface biased by the sound outlet
  • orientations referred to in this specification refer to the direction of the vibration system, and the orientation refers to the direction of the magnetic circuit system; the inner side referred to in this specification refers to the side located in the inner cavity of the module, and the outer side refers to the mode. One side of the group outside the lumen.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a sounder module includes a casing composed of an upper casing 10 and a lower casing 20 which are combined together, and a vibration system and a magnetic circuit are accommodated in a space surrounded by the upper casing 10 and the lower casing 20.
  • the vibration system includes a diaphragm 30 whose edge portion is fixed between the upper casing 10 and the lower casing 20, a spherical portion 32a is fixed to a central portion of the diaphragm 30 near one side of the upper casing 10, and a voice coil is fixed to the other side of the diaphragm 30.
  • the magnetic circuit system includes a basin frame 40 fixed to the inner side of the lower casing 20.
  • the inner center position of the basin frame 40 is sequentially fixed with a magnet 42 and a washer 44, and a magnetic gap is provided between the magnet 42 and the side wall of the washer 44 and the basin frame 40.
  • the end of the voice coil 34 is located within the magnetic gap.
  • the voice coil 34 reciprocates up and down in the magnetic gap according to the magnitude and direction of the acoustic electric signal passing through the winding, and the diaphragm 30 and the dome 32a vibrate with the up and down movement of the voice coil 34, and the air is sounded, thereby completing Energy conversion between electroacoustics.
  • the position of the upper casing 10 corresponding to the vibration system is provided with a sound outlet 12, and the sound outlet 12 is disposed near one side edge of the dome 32a, deviating from the center position of the vibration system, and sounding
  • the port 12 is an ascending port whose port is above the surface of the upper casing 10.
  • a pressure regulating portion 320a is provided at a position on the dome 32a corresponding to the orthographic projection area of the sound outlet 12. The pressure regulating portion 320a is raised above the other portion of the dome 32a and protrudes in the direction of the sound outlet 12.
  • the pressure regulating portion 320a is a curved surface structure with a low center and a high center.
  • the size and height of the pressure regulating portion 320a need to be set according to the amplitude of the vibration system and the acoustic performance requirements of the module, that is, The sound pressure can be balanced, the polarization of the system can be reduced, and the inner wall of the upper casing 10 cannot be touched, which can be determined by simulation experiments.
  • it is preferable that the shape and size of the pressure regulating portion 320a are adapted to the orthographic projection area of the sound outlet 12.
  • the shape and size of the pressure regulating portion may be adjusted by the result of the simulation experiment, and the shape may be other shapes different from the shape of the orthographic projection area of the sound outlet 12, and the size thereof may be smaller than the orthographic projection area of the sound outlet 12. The size may also be larger than the size of the orthographic projection area of the sound outlet 12.
  • the pressure regulating portion 320a and the other portions of the dome 32a are integrated, and the pressure regulating portion 320a can be processed by an infrared hot press forming process or a pneumatic forming process, etc.
  • the hot press forming process because the infrared hot press forming process requires a simple mold, a fast forming, and a high production efficiency.
  • the port of the sound outlet 12 is covered with a dustproof net 50, and the dustproof net 50 can block external dust and debris from entering the inner cavity of the sounder module from the sound outlet 12, and can be extended. The life of the sounder module.
  • the lower casing 20 is an annular structure in which both upper and lower ends are open, and the basin frame 40 is installed at the opening of the lower end thereof. After the module is assembled, the outer surface of the basin frame 40 is flush with the lower end surface of the lower casing 20. Flat, this structure can effectively reduce the thickness of the module, so that it can meet the requirements of thinning development of portable electronic devices.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment is basically the same as the first embodiment, and the difference is that:
  • the position of the dome 32b corresponding to the orthographic projection area of the sound outlet 12 is provided with a pressure regulating portion 320b, and the pressure regulating portion 320b includes a central portion 322 of a planar structure, and the periphery of the central portion 322 passes through
  • the connecting portion 324 is integrally connected with other portions of the dome 32b, and the connecting portion 324 is an approximately tapered annular bevel structure.
  • the structure of the pressure regulating portion is not limited to the structure described in the above two embodiments, and may be a wave surface structure or the like provided with a recess in the middle, as long as it can function to balance the sound pressure of the front sound chamber.
  • the invention sets the dome to an asymmetric structure, that is, corresponding to the orthographic projection area on the dome
  • the position is set to a pressure regulating portion which is convex toward the sound outlet, and the pressure adjusting portion can re-adjust the ratio of the sound volume of the sound chamber area of the front sound chamber to the sound volume of the non-sound mouth area, when the vibration system starts to radiate the sound pressure
  • the re-adjusted sound volume balances the asymmetry of the sound field distribution in the front acoustic cavity, locally increasing the sound pressure distribution on the surface of the diaphragm, so that the sound pressure of the diaphragm surface located in the sound exit area is balanced with the sound pressure of other parts, thereby It can effectively reduce the polarization of the system and improve the harmonic distortion characteristics of the sounder module.
  • the present invention is only an example of the above-mentioned sounder module as an example of the technical solution of the present invention for providing a convex pressure regulating portion corresponding to the position of the right projection area of the sound port on the top of the ball, and the structure of the sounder module in practical application.
  • the present invention is not limited to the above structure, and the technical solution of the present invention can be applied to any module in which the sound outlet is an offset rising port, so whether the structure of the sounder module is the same as that in the above embodiment, as long as it is
  • a convex pressure regulating portion is disposed on the top of the ball corresponding to the position of the sound projection front projection area, and products for reducing system polarization and reducing harmonic distortion fall within the protection range of the present invention.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明公开了一种发声器模组，涉及电声产品技术领域，包括外壳，所述外壳内收容有振动系统和磁路系统，所述外壳上对应所述振动系统的位置设有出声口，所述出声口偏离所述振动系统的中心位置设置，且所述出声口为高出所述外壳表面的上升口；所述振动系统包括振膜，所述振膜靠近所述出声口侧的中部设有球顶，所述球顶上对应所述出声口的正投影区域设有调压部，所述调压部高出所述球顶的其它部位并向所述出声口的方向凸起。本发明发声器模组解决了现有技术中发声器模组前声腔声场分布不对称的技术问题，本发明发声器能够平衡前声腔声场分布的非对称，局部增加振膜表面的声压分布，使其与其余部分相平衡，有效的降低系统偏振，减小谐波失真。

Description

发声器模组 技术领域
本发明涉及电声产品技术领域，特别涉及一种发声器模组。
背景技术
发声器模组是便携式电子设备的重要声学部件，用于完成电信号与声音信号之间的转换，是一种能量转换器件。现有的发声器模组通常包括外壳，外壳内收容有振动系统和磁路系统，外壳上对应振动系统的位置设有发声器模组的出声口，通常出声口会对应振动系统的中心位置设置，且出声口的端口会与外壳的外表面齐平。但是有的发声器模组为了满足整体系统的结构设计，常常具有凸起的上声口设计，即出声口的通道较长，其端口高出外壳的外表面；同时该出声口为了满足系统装配的需求，往往不能使其位于振动系统的中心位置。此种不对称的上升口式出声口将导致发声器模组的前声腔声场非对称分布，出声口处的声压释放较大，出声口处声场能量较为集中，声能量相对集中的区域对振动系统的反作用力更大，从而导致振膜表面声压非对称分布，如图5所示。非对称设置的出声口将导致振膜表面的声载荷力分布非对称，将直接导致振动系统偏振加剧，谐波失真升高。
发明内容
针对以上缺陷，本发明所要解决的技术问题是提供一种发声器模组，此发声器模组能够平衡前声腔内声场分布的非对称，局部增加振膜表面的声压分布，使其与其余部分相平衡，降低系统偏振，减小谐波失真。
为解决上述技术问题，本发明的技术方案是：
一种发声器模组，包括外壳，所述外壳内收容有振动系统和磁路系统，所述外壳上对应所述振动系统的位置设有出声口，所述出声口偏离所述振动系统的中心位置设置，且所述出声口为端口高出所述外壳表面的上升口；所述振动系统包括振膜，所述振膜靠近所述出声口侧的中部设有球顶，所述球顶上对应 所述出声口的正投影区域设有调压部，所述调压部高出所述球顶的其它部位并向所述出声口的方向凸起。
其中，所述外壳包括结合在一起的上壳和下壳，所述出声口设置在所上壳上。
其中，所述调压部为周边低中心高的弧面结构。
其中，所述调压部为周边通过斜面与所述球顶的其它部位相衔接的平面结构。
其中，所述调压部为波浪面结构。
其中，所述出声口靠近所述球顶的一侧边缘设置。
其中，所述出声口的端口处覆盖有防尘网。
其中，所述调压部的形状和尺寸与所述出声口的正投影区域相适配。
其中，所述球顶上的所述调压部通过热压工艺成型。
采用了上述技术方案后，本发明的有益效果是：
由于本发明发声器模组包括外壳，外壳上对应振动系统的位置设有出声口，出声口偏离振动系统的中心位置设置，且出声口为端口高出外壳表面的上升口；振动系统的振膜靠近出声口侧的中部设有球顶，球顶上对应出声口的正投影区域设有调压部，调压部高出球顶的其它部位并向出声口的方向凸起。在球顶上位于出声口的正投影区域的部位设计向出声口方向凸起的调压部，通过该调压部可重新调整前声腔的出声口区域与非出声口区域的声容积的比例，在振动系统开始辐射声压时，重新调整的声容积可平衡前声腔内声场分布的非对称性，局部增加振膜表面的声压分布，使得振膜表面位于出声口区的声压与其它部位的声压相平衡，从而，可有效降低系统偏振的大小，改善发声器模组的谐波失真。
综上所述，本发明发声器模组解决了现有技术中发声器模组前声腔声场分布不对称的技术问题，本发明发声器能够平衡前声腔声场分布的非对称，局部增加振膜表面的声压分布，使其与其余部分相平衡，有效的降低系统偏振，减小谐波失真。
附图说明
图1是本发明发声器模组实施例一的结构示意图；
图2是图1的A-A线剖视图；
图3是本发明发声器模组实施例二的结构示意图；
图4是图3的B-B线剖视图；
图5是出声口偏置的振膜表面声压分布图；
图中：10、上壳，12、出声口，20、下壳，30、振膜，32a、球顶，32b、球顶，320a、调压部，320b、调压部，322、中心部，324、连接部，34、音圈，40、盆架，42、磁铁，44、华司，50、防尘网。
具体实施方式
下面结合附图和实施例，进一步阐述本发明。
本说明书中涉及到的方位上均指振动系统的方向，方位下均指与磁路系统的方向；本说明书中涉及到的内侧均指位于模组内腔内的一侧，外侧均指位于模组内腔外的一侧。
实施例一：
如图1所示，一种发声器模组，包括外壳，外壳由结合在一起的上壳10和下壳20构成，上壳10和下壳20围成的空间内收容有振动系统和磁路系统。振动系统包括边缘部固定在上壳10与下壳20之间的振膜30，振膜30靠近上壳10的一侧的中部固定有球顶32a，振膜30的另一侧固定有音圈34。磁路系统包括固定在下壳20内侧的盆架40，盆架40的内侧中心位置依次固定有磁铁42和华司44，磁铁42和华司44与盆架40的侧壁之间设有磁间隙，音圈34的端部位于磁间隙内。音圈34根据通过其绕线内的音波电信号的大小和方向在磁间隙内做往复上下运动，振膜30和球顶32a随着音圈34的上下运动而振动，策动空气发声，从而完成电声之间的能量转换。
如图1和图2共同所示，上壳10上对应振动系统的位置设有出声口12，出声口12靠近球顶32a的一侧边缘设置，偏离振动系统的中心位置，且出声口12为端口高出上壳10表面的上升口。球顶32a上对应出声口12的正投影区域的位置设有调压部320a，调压部320a高出球顶32a的其它部位并向出声口12的方向凸起。
如图1和图2共同所示，调压部320a为周边低中心高的弧面结构，调压部320a的尺寸和高度需要根据振动系统的振幅及模组的声学性能要求设定，即要能平衡声压，减小系统偏振动，又不能碰到上壳10的内壁，可通过仿真实验进行确定。本实施方式中优选调压部320a的形状和尺寸与出声口12的正投影区域相适配。实际应用中可以通过仿真实验的结果调整调压部的形状和尺寸，其形状可以为与出声口12的正投影区域的形状不同的其它形状，其尺寸可以小于出声口12的正投影区域的尺寸，也可以大于出声口12的正投影区域的尺寸。
如图1和图2共同所示，调压部320a与球顶32a的其它部位为一体结构，调压部320a可通过红外热压成型工艺或者气压成型工艺等加工而成，本实施方式优选红外热压成型工艺，因为红外热压成型工艺需要的模具简单，成型快，生产效率高。
如图1所示，出声口12的端口处覆盖有防尘网50，防尘网50可以阻挡外部的灰尘及杂物从出声口12处进入到发声器模组的内腔，可延长发声器模组的使用寿命。
如图1所示，下壳20为上下两端均开口的环形结构，盆架40安装在其下端的开口处，模组组装完成后，盆架40的外表面与下壳20的下端面齐平，此种结构可有效的降低模组的厚度，使其能够满足便携式电子设备薄形化发展的要求。
实施例二：
本实施方式与实施例一基本相同，其不同之处在于：
如图3和图4共同所示，球顶32b上对应出声口12的正投影区域的位置设有调压部320b，调压部320b包括平面结构的中心部322，中心部322的周边通过连接部324与球顶32b的其它部位衔接为一体，连接部324为近似锥形的环状斜面结构。
调压部的结构并不限于上述两个实施例所述的结构，其还可以是中间设有凹陷的波浪面结构等，只要能够起到平衡前声腔声压的作用即可。
本发明通过将球顶设置成非对称结构，即在球顶上对应出声口正投影区域 的位置设置向出声口方向凸起的调压部，通过该调压部可重新调整前声腔的出声口区域与非出声口区域的声容积的比例，在振动系统开始辐射声压时，重新调整的声容积可平衡前声腔内声场分布的非对称性，局部增加振膜表面的声压分布，使得振膜表面位于出声口区的声压与其它部位的声压相平衡，从而，可有效降低系统偏振的大小，改善发声器模组的谐波失真特性。
本发明仅是以上述发声器模组为例对本发明在球顶上对应出声口正投影区域的位置设置凸起的调压部的技术方案的举例说明，实际应用中发声器模组的结构并不限于上述结构，本发明的技术方案可应用于任何一种出声口为偏置的上升口的模组中，故无论发声器模组的结构是否与上述实施例中的相同，只要是在球顶上对应出声口正投影区域的位置设置凸起的调压部，用以减小系统偏振，降低谐波失真的产品均落入本发明的保护范围内。
本发明不局限于上述具体的实施方式，本领域的普通技术人员从上述构思出发，不经过创造性的劳动，所做出的种种变换，均落在本发明的保护范围之内。

Claims (9)

  1. 发声器模组，包括外壳，所述外壳内收容有振动系统和磁路系统，所述外壳上对应所述振动系统的位置设有出声口，所述出声口偏离所述振动系统的中心位置设置，且所述出声口为端口高出所述外壳表面的上升口；所述振动系统包括振膜，所述振膜靠近所述出声口侧的中部设有球顶，其特征在于，所述球顶上对应所述出声口的正投影区域设有调压部，所述调压部高出所述球顶的其它部位并向所述出声口的方向凸起。
  2. 根据权利要求1所述的发声器模组，其特征在于，所述外壳包括结合在一起的上壳和下壳，所述出声口设置在所上壳上。
  3. 根据权利要求2所述的发声器模组，其特征在于，所述调压部为周边低中心高的弧面结构。
  4. 根据权利要求2所述的发声器模组，其特征在于，所述调压部为周边通过斜面与所述球顶的其它部位相衔接的平面结构。
  5. 根据权利要求2所述的发声器模组，其特征在于，所述调压部为波浪面结构。
  6. 根据权利要求3至5任一权利要求所述的发声器模组，其特征在于，所述出声口靠近所述球顶的一侧边缘设置。
  7. 根据权利要求6所述的发声器模组，其特征在于，所述出声口的端口处覆盖有防尘网。
  8. 根据权利要求7所述的发声器模组，其特征在于，所述调压部的形状和尺寸与所述出声口的正投影区域相适配。
  9. 根据权利要求1所述的发声器模组，其特征在于，所述球顶上的所述调压部通过热压工艺成型。
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