WO2016124041A1 - 扬声器模组 - Google Patents

扬声器模组 Download PDF

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Publication number
WO2016124041A1
WO2016124041A1 PCT/CN2015/096751 CN2015096751W WO2016124041A1 WO 2016124041 A1 WO2016124041 A1 WO 2016124041A1 CN 2015096751 W CN2015096751 W CN 2015096751W WO 2016124041 A1 WO2016124041 A1 WO 2016124041A1
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WO
WIPO (PCT)
Prior art keywords
module
speaker
steel sheet
sheet
casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/096751
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English (en)
French (fr)
Inventor
侯金彩
钟明杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
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Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to US15/540,194 priority Critical patent/US10178467B2/en
Publication of WO2016124041A1 publication Critical patent/WO2016124041A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the utility model relates to the technical field of electroacoustic products, in particular to a speaker module.
  • the speaker module is an important acoustic component in portable electronic devices for converting acoustic electric signals into sound signals, and is an energy conversion device.
  • the speaker module usually comprises a casing, the casing housing a speaker unit, the speaker unit comprises a vibration system and a magnetic circuit system, the vibration system comprises a diaphragm and a voice coil combined, and the magnetic circuit system comprises a washer, which are sequentially combined. Magnet and basin stand.
  • the speaker unit divides the entire module cavity into two chambers, the front sound chamber and the rear sound chamber.
  • the front sound chamber communicates with the sound hole of the module, and the sound emitted by the speaker unit enters the front sound chamber and is transmitted from the sound hole. .
  • the height of the side-sounding speaker module is limited by the thickness of the portable electronic device, and has to be designed to be thinner and thinner.
  • Good acoustic performance the volume of the front cavity of the module becomes the key to the improvement of the acoustic performance of the module.
  • the upper end surface of the speaker unit is away from the outer surface of the module housing. The distance is only 0.64mm.
  • the front cavity in the upper part of the speaker unit can only be sealed with a 0.2mm thick steel sheet because the thickness of the steel sheet is small, so that the front cavity
  • the volume increases, resulting in poor mid-range and high-frequency performance of the module, which in turn reduces the overall acoustic performance of the module.
  • the technical problem to be solved by the present invention is to provide a speaker module, which has high frequency performance and high overall acoustic performance.
  • the technical solution of the present invention is:
  • a speaker module includes a module lower case, a module upper case and a steel piece which are sequentially combined together, and a space enclosed by the module lower case, the module upper case and the steel piece is accommodated therein a speaker unit, the speaker unit, the module upper case and the steel sheet together form a front acoustic cavity of the module, and the front acoustic cavity is in communication with an acoustic hole of the module, a sound hole is located at a side of the speaker unit;
  • a sheet is attached to the inner side of the steel sheet, and the sheet has a thickness of 0.1 mm to 0.2 mm, and the sheet is made of a sound insulating material.
  • the steel sheet is provided with a recessed area extending toward the inner cavity of the module corresponding to the position of the speaker unit, the recessed area has a depth of 0.1 mm to 0.2 mm, and the sheet is pasted in the recessed area. s position.
  • the sheet is disposed away from the sound hole.
  • the thickness of the sheet is 0.15 mm, and the depth of the recessed area is also 0.15 mm.
  • the sound insulating material is one of PET, bakelite or acrylic.
  • the steel sheet is pasted and bonded to the upper shell of the module, and a position where the upper shell of the module is combined with the steel sheet is provided with a downwardly concave joint portion, and the steel sheet is pasted on the joint portion And the outer surface of the steel sheet is flush with or slightly lower than the outer surface of the upper shell of the module.
  • the sound hole is disposed at a side of the upper casing of the module, and a gap is left between a side wall of the joint portion near the sound hole side and a side wall of the steel sheet, The gap forms a glue tank.
  • the speaker unit comprises a unitary front cover and a unit casing combined together, and a space surrounded by the unit front cover and the unit casing houses a vibration system and a magnetic circuit system, the single
  • the body casing is an annular structure with open ends, and the bottom of the basin of the magnetic circuit system is exposed at the lower open end of the single casing.
  • an outer surface of the bottom of the basin frame protrudes from a lower end surface of the single-body casing, and a position of the lower casing of the module corresponding to the bottom of the basin frame is provided with a mounting hole adapted to the bottom of the basin frame.
  • the bottom of the basin frame is located at the mounting hole, and the outer surface of the bottom of the basin frame is flush with the outer surface of the lower case of the module.
  • one side wall of the single housing is provided with two outlet slots, and two leads of the voice coil of the vibration system respectively protrude from the two outlet slots and are electrically connected to the FPCB.
  • the speaker module of the present invention comprises a module lower shell, a module upper shell and a steel sheet which are sequentially combined together, a speaker unit, a module upper shell and a steel sheet enclose a space for housing a speaker unit, the speaker
  • the unit, the upper shell of the module and the steel sheet together form the front sound chamber of the module, and the front sound chamber is disposed on the side of the speaker unit
  • the sound holes of the module are connected; a thin sheet is attached to the inner side of the steel sheet, and the thickness of the sheet is 0.1 mm to 0.2 mm, and the material of the sheet is soundproof material.
  • a sheet made of a sound-insulating material is adhered to the inner side of the steel sheet, and the thickness of the sheet is 0.1 mm to 0.2 mm.
  • This thickness of the sheet ensures that no resonance occurs in the front sound chamber, and the front sound chamber is effectively reduced.
  • the volume which improves the medium and high frequency performance of the module, and thus improves the overall acoustic performance of the module.
  • the speaker module of the utility model is based on the structure of the existing module, and does not need to change the mold of the module casing, thereby improving the acoustic performance of the module while saving cost.
  • the depth of the recessed area is 0.1 mm to 0.2 mm, and the sheet is pasted at the position of the recessed area.
  • the recessed area forms a protrusion in the front acoustic cavity, which further reduces the volume of the front acoustic cavity.
  • the combination of the depressed area of 0.1 mm to 0.2 mm depth and the thin slice of 0.1 mm to 0.2 mm still does not cause resonance of the front acoustic cavity, further Improve the performance of the module, high frequency, and improve the overall acoustic performance of the module.
  • the sheet Since the sheet is disposed away from the sound hole, the sheet does not affect the channel area at the sound hole, thereby ensuring smooth sound flow and ensuring that the acoustic performance of the module is not affected.
  • the joint of the upper shell of the module and the steel sheet is provided with a downwardly recessed joint portion, and the outer surface of the steel sheet is flush with the outer surface of the upper shell of the module.
  • the downwardly recessed joint reduces the thickness of the module and increases the contact area between the steel sheet and the upper shell of the module, enhancing the bonding strength between the steel sheet and the upper shell of the module.
  • the gap forms a glue groove due to a gap left between the side wall of the joint and the side wall of the steel sheet.
  • the setting of the plastic tank increases the amount of glue between the steel sheet and the upper shell of the module, further enhancing the bonding strength between the steel sheet and the upper shell of the module, and effectively reducing the steel sheet from the upper shell of the module.
  • the chance of cracking or falling off enhances module stability and extends the life of the module.
  • the lower casing of the module Since the outer surface of the bottom of the basin frame protrudes from the lower end surface of the single casing, the lower casing of the module has a mounting hole corresponding to the bottom of the basin frame corresponding to the bottom of the basin frame, and the outer surface of the bottom of the basin frame and the lower casing of the module The outer surface is flush. This structure effectively reduces the thickness of the module, enabling the module to meet the requirements of thin, compact electronic devices.
  • the speaker module of the present invention solves the high frequency in the speaker module of the prior art.
  • the technical problem of poor performance, the speaker module of the utility model has good high frequency performance, high overall acoustic performance, small thickness, good stability and long service life.
  • FIG. 1 is a perspective exploded structural view of a speaker module of the present invention
  • Figure 2 is an enlarged view of a portion A of Figure 1;
  • Figure 3 is a combination view of Figure 1;
  • Figure 4 is an enlarged cross-sectional view taken along line B-B of Figure 3;
  • orientations referred to in this specification refer to the direction of the vibration system of the speaker unit, and the orientation refers to the direction of the magnetic circuit system of the speaker unit.
  • the inner side referred to in this specification refers to the side located inside the cavity of the module.
  • a speaker module includes a casing, and the casing is composed of a module lower casing 10, a module upper casing 20 and a steel sheet 60 which are sequentially combined, and the module lower casing 10.
  • the speaker unit 30 is housed in a space surrounded by the module upper case 20 and the steel piece 60.
  • the speaker unit 30 divides the entire module cavity into a front sound chamber 80 and a rear sound chamber 82.
  • the speaker unit 30, the module upper shell 20 and the steel sheet 60 together form a front sound chamber 80, a speaker unit 30, and a module upper shell. 20 and the module lower case 10 together form a rear sound chamber 82.
  • the sound hole 70 of the module is disposed on the side of the speaker unit 30, and is located on one side wall of the upper casing 20 of the module, and the front sound chamber 80 communicates with the sound hole 70.
  • the speaker unit 30 includes a unitary front cover 32 and a unitary casing 34 that are joined together, and a space surrounded by the unit front cover 32 and the unit casing 34 houses a vibration system and Magnetic Road system.
  • the vibration system includes a diaphragm 362 whose edge portion is fixed between the unit front cover 32 and the unit casing 34.
  • the diaphragm 362 is fixed with a dome 360 in the middle of one side of the unit front cover 32, and the diaphragm 362 is another.
  • a voice coil 364 is fixed to the side.
  • the magnetic circuit system includes a basin bracket 384 fixed to the inner side of the unit casing 34.
  • the inside of the basin bracket 384 is sequentially fixed with a magnet 382 and a washer 380.
  • the magnet 382 and the side wall of the washer 380 and the basin bracket 384 are provided with a magnetic gap.
  • the end of the voice coil 364 is located within the magnetic gap.
  • the module further includes an FPCB (Flexible Printed Circuit Board) 40 for electrically connecting the voice coil 364 and the external circuit of the module, and the FPCB 40 transmits the acoustic electric signal to the voice coil 364, and the voice coil 364 is received according to the received
  • FPCB Flexible Printed Circuit Board
  • the size and direction of the acoustic electric signal reciprocate up and down in the magnetic gap, and the diaphragm 362 and the dome 360 vibrate as the voice coil 364 moves up and down, initiating the air to sound, thereby completing the energy conversion between the electroacoustics.
  • the steel sheet 60 is provided with a recessed portion 62 extending toward the inner cavity of the module corresponding to the position of the dome 360.
  • the depth of the recessed portion 62 is 0.1 mm to 0.2 mm, and the recess is preferably in this embodiment.
  • the depth of the region 62 is 0.15 mm, and the recessed portion 62 forms a protrusion having a height of 0.15 mm in the front acoustic cavity 80, and the recessed portion 62 is processed by a stamping process.
  • a sheet 50 is attached to the position of the recessed portion 62 on the inner side of the steel sheet 60 (i.e., the position of the protrusion).
  • the thickness of the sheet 50 is also 0.1 mm to 0.2 mm. In the present embodiment, the thickness of the sheet 50 is preferably 0.15 mm. It is made of a sound insulating material such as PET (polyethylene terephthalate), bakelite or acrylic. Since the cost of PET is low, the material of the sheet 50 in the present embodiment is preferably PET.
  • a stamped recessed portion 62 is disposed on the steel sheet 60, and a sheet 50 is adhered to the inside of the recessed portion 62, and the depth of the recessed portion 62 and the thickness of the sheet 50 are both 0.15 mm, and the recessed portion 62 and the sheet 50 are superposed on each other. A protrusion having a height of 0.3 mm is formed in the front acoustic cavity 80.
  • This height of the protrusion ensures that no resonance occurs in the front acoustic cavity 80, and at the same time, the volume of the front acoustic cavity 80 is effectively reduced, thereby improving the module.
  • the medium and high frequency performance further improves the overall acoustic performance of the module.
  • the sheet 50 is disposed away from the sound hole 70, and the arrangement of the sheet 50 away from the sound hole 70 does not affect the channel area at the sound hole, thereby ensuring smooth sound flow and ensuring that the acoustic performance of the module is not affected. .
  • the steel sheet 60 is bonded to the upper shell 20 of the module, and the joint of the upper shell 20 and the steel sheet 60 is provided with a downwardly recessed joint portion 22, a steel sheet. 60 paste in combination
  • the outer surface of the steel sheet 60 is flush with or slightly lower than the outer surface of the upper casing 20 of the module.
  • a gap is left between the side wall of the joint portion 22 near the sound hole 70 side and the side wall of the steel sheet 60, that is, the area of the joint portion 22 is larger than the steel sheet 60, the side wall of the joint portion 22 and the steel sheet.
  • the gap between the side walls of 60 forms a glue receiving groove 90.
  • the arrangement of the joint portion 22 reduces the thickness of the module, and at the same time increases the contact area between the steel sheet 60 and the module upper shell 20, enhancing the bonding strength between the steel sheet 60 and the module upper shell 20.
  • the arrangement of the adhesive tank 90 increases the amount of glue applied between the steel sheet 60 and the upper shell 20 of the module, further enhancing the bonding strength between the steel sheet 60 and the upper shell 20 of the module, and effectively reducing the steel sheet 60.
  • the probability of cracking or falling off the upper casing 20 of the module enhances the stability of the module and prolongs the service life of the module.
  • the FPCB 40 is disposed on the side of the short side of the speaker unit 30, and the side wall of the single housing 34 is provided with two outlet slots 340, and the voice coil 364 Two voice coil leads 366 respectively protrude from the two outlet slots 340.
  • the FPCB 40 is provided with two inner connecting portions 44 corresponding to the positions of the two outlet slots 340.
  • the two voice coil leads 366 are respectively electrically connected to the two inner connecting portions 44.
  • the other end of the FPCB 40 is provided with two pads electrically connected to the external circuit of the module.
  • the upper casing 20 of the module corresponding to the position of the FPCB 40 is provided with an opening, and the pad exposes the module from the opening.
  • the inner cavity is electrically connected to the external circuit of the module.
  • Two positioning posts 14 are disposed on the inner side of the module lower casing 10 corresponding to the position of the FPCB 40.
  • the positions of the two positioning posts 14 on the FPCB 40 are respectively provided with positioning holes 42 corresponding to the positioning posts 14, and the positioning holes 42 are together with the pads.
  • the module inner cavity is exposed, and the FPCB 40 is fixed to the module lower case 10 through the positioning post 14 and the positioning hole 42.
  • the unit outer casing 34 is an annular structure with open ends, and the upper open end is combined with the unit front cover 32, and the lower open end is provided with a magnetic circuit system, and the bottom of the basin frame 384 is exposed.
  • the module lower case 10 is provided with a mounting hole 12 corresponding to the size and shape of the bottom of the basin frame 384 corresponding to the bottom of the basin frame 384. After the module is assembled, the bottom of the basin frame 384 is located at the mounting hole 12. And the outer surface of the bottom of the basin frame 384 is flush with the outer surface of the module lower casing 10.
  • the inner edge portion of the module lower case 10 is combined with the module upper case 20.
  • the ultrasonic wire 16 is disposed at the portion, and the module lower case 10 and the module upper case 20 are integrated by an ultrasonic welding process.
  • the utility model sticks a sheet made of a soundproof material on the inner wall of the front sound chamber, thereby reducing the volume of the front sound chamber, thereby improving the medium and high frequency performance of the module without changing the structure of each component of the module, and improving The overall acoustic performance of the module.
  • the module can be applied to any speaker module with a side sounding structure.
  • the technical solution of the present invention can be applied to other side sounding structures without any creative work according to the description of the specification.
  • the module whether the other structure of the module is the same as the module structure in the above embodiment, as long as the sheet made of the soundproof material is pasted in the front cavity to reduce the volume of the front cavity, and the module is improved.
  • the medium and high frequency performance speaker modules all fall within the protection scope of the present invention.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

一种扬声器模组，涉及电声产品技术领域，包括依次结合在一起的模组下壳、模组上壳和钢片，所述模组下壳、所述模组上壳和所述钢片围成的空间内收容有扬声器单体，所述扬声器单体、所述模组上壳和所述钢片共同围成所述模组的前声腔，所述前声腔与所述模组的出声孔相连通，所述出声孔位于所述扬声器单体的侧部；所述钢片的内侧粘贴有一薄片，所述薄片的厚度为0.1mm～0.2mm，所述薄片的材质为隔音材料。本扬声器模组解决了现有技术中扬声器模组中、高频性能差的技术问题，本扬声器模组中、高频性能好，整体声学性能高，厚度小，同时稳定性好，使用寿命长。

Description

扬声器模组 技术领域
本实用新型涉及电声产品技术领域，特别涉及一种扬声器模组。
背景技术
扬声器模组是便携式电子设备中一种重要的声学部件，用于将声波电信号转换成声音信号传出，是一种能量转换器件。扬声器模组通常包括外壳，外壳内收容有扬声器单体，扬声器单体包括振动系统和磁路系统，振动系统包括结合在一起的振膜和音圈，磁路系统包括依次结合在一起的华司、磁铁和盆架。扬声器单体将整个模组内腔分隔为前声腔和后声腔两个腔体，前声腔与模组的出声孔相连通，扬声器单体发出的声音进入前声腔并从出声孔处传出。随着便携式电子设备设计得越来越轻薄、小巧，使得侧出声的扬声器模组的高度受限于便携式电子设备的整机厚度，不得不设计得越来越薄，为了保证模组具有较好的声学性能，模组前声腔的体积成为了模组声学性能提升的关键，例如：一种安装在较薄电子设备中的模组，其扬声器单体的上端面距离模组外壳外表面的距离仅有0.64mm，在此高度下，要避免前声腔产生共振，在位于扬声器单体上部的前声腔只能用0.2mm厚的钢片来密封，因为钢片的厚度较小，使得前声腔的体积增大，从而导致模组的中、高频性能较差，进而降低了模组的整体声学性能。
实用新型内容
针对以上缺陷，本实用新型所要解决的技术问题是提供一种扬声器模组，此扬声器模组中、高频性能好，整体声学性能高。
为解决上述技术问题，本实用新型的技术方案是：
一种扬声器模组，包括依次结合在一起的模组下壳、模组上壳和钢片，所述模组下壳、所述模组上壳和所述钢片围成的空间内收容有扬声器单体，所述扬声器单体、所述模组上壳和所述钢片共同围成所述模组的前声腔，所述前声腔与所述模组的出声孔相连通，所述出声孔位于所述扬声器单体的侧部；所述 钢片的内侧粘贴有一薄片，所述薄片的厚度为0.1mm～0.2mm，所述薄片的材质为隔音材料。
其中，所述钢片对应所述扬声器单体的位置设有向所述模组内腔延伸的凹陷区，所述凹陷区的深度为0.1mm～0.2mm，所述薄片粘贴在所述凹陷区的位置。
其中，所述薄片远离所述出声孔设置。
其中，所述薄片的厚度为0.15mm，所述凹陷区的深度也为0.15mm。
其中，所述隔音材料为PET、电木或亚克力中的一种。
其中，所述钢片与所述模组上壳粘贴结合，所述模组上壳与所述钢片相结合的位置设有向下凹陷的结合部，所述钢片粘贴在所述结合部上，且所述钢片的外表面与所述模组上壳的该处外表面齐平或略低于所述模组上壳的该处外表面。
其中，所述出声孔设置在所述模组上壳的侧部，靠近所述出声孔侧的所述结合部的侧壁与所述钢片的侧壁之间留有缝隙，所述缝隙形成容胶槽。
其中，所述扬声器单体包括结合在一起的单体前盖和单体外壳，所述单体前盖和所述单体外壳围成的空间内收容有振动系统和磁路系统，所述单体外壳为两端开口的环形结构，所述磁路系统的盆架底部裸露在所述单体外壳的下开口端。
其中，所述盆架底部的外表面突出所述单体外壳的下端面，所述模组下壳对应所述盆架底部的位置设有与所述盆架底部相适配的安装孔，所述盆架底部位于所述安装孔处，且所述盆架底部的外表面与所述模组下壳的外表面齐平。
其中，所述单体外壳的一侧侧壁上设有两个出线槽，所述振动系统的音圈的两根引线分别从两个所述出线槽处伸出并与所述FPCB电连接。
采用了上述技术方案后，本实用新型的有益效果是：
由于本实用新型扬声器模组包括依次结合在一起的模组下壳、模组上壳和钢片,模组下壳、模组上壳和钢片围成的空间内收容有扬声器单体，扬声器单体、模组上壳和钢片共同围成模组的前声腔，前声腔与设置在扬声器单体侧部 的模组出声孔相连通；钢片的内侧粘贴有一薄片，薄片的厚度为0.1mm～0.2mm，薄片的材质为隔音材料。在钢片的内侧粘贴一由隔音材料制成的薄片，且薄片的厚度为0.1mm～0.2mm，此厚度的薄片即保证了前声腔内不会产生共振，同时又有效的减小了前声腔的体积，从而提高了模组的中、高频性能，进而提高了模组的整体声学性能。同时本实用新型扬声器模组是在现有模组的结构基础上做出的改进，并不需要改变模组壳体的模具，在改善了模组声学性能的同时节省了成本。
由于钢片对应扬声器单体的位置设有向模组内腔延伸的凹陷区，凹陷区的深度为0.1mm～0.2mm，薄片粘贴在凹陷区的位置。凹陷区在前声腔内形成了凸起，进一步的减小了前声腔的体积，0.1mm～0.2mm深度的凹陷区与0.1mm～0.2mm厚度的薄片结合仍不会使前声腔产生共振，进一步的提高了模组中、高频的性能，提升了模组的整体声学性能。
由于薄片远离出声孔设置，薄片不会影响出声孔处的声道面积，从而可保证声波流通通畅，保证了模组声学性能不受影响。
由于钢片与模组上壳粘贴结合，模组上壳与钢片相结合的位置设有向下凹陷的结合部，钢片的外表面与模组上壳的该处外表面齐平。向下凹陷的结合部降低了模组的厚度，同时增加了钢片与模组上壳之间的接触面积，增强了钢片与模组上壳的结合强度。
由于结合部的侧壁与钢片的侧壁之间留有缝隙，缝隙形成容胶槽。容胶槽的设置增加了钢片与模组上壳之间的涂胶量，进一步的增强了钢片与模组上壳之间的结合强度，有效的降低了钢片从模组上壳上开裂或脱落的机率，增强了模组稳定性，并延长了模组的使用寿命。
由于盆架底部的外表面突出单体外壳的下端面，模组下壳对应盆架底部的位置设有与盆架底部相适配的安装孔，盆架底部的外表面与模组下壳的外表面齐平。此结构有效的减小了模组的厚度，使得模组能够满足轻薄、小巧型电子设备的要求。
综上所述，本实用新型扬声器模组解决了现有技术中扬声器模组中、高频 性能差的技术问题，本实用新型扬声器模组中、高频性能好，整体声学性能高，厚度小，同时稳定性好，使用寿命长。
附图说明
图1是本实用新型扬声器模组的立体分解结构示意图；
图2是图1的A部放大图；
图3是图1的组合图；
图4是图3的B-B线剖视放大图；
图中：10、模组下壳，12、安装孔，14、定位柱，16、超声线，20、模组上壳，22、结合部，30、扬声器单体，32、单体前盖，34、单体外壳，340、出线槽，360、球顶，362、振膜，364、音圈，366、音圈引线，380、华司，382、磁铁，384、盆架，40、FPCB，42、定位孔，44、内连接部，50、薄片，60、钢片，62、凹陷区，70、出声孔，80、前声腔，82、后声腔，90、容胶槽。
具体实施方式
下面结合附图和实施例，进一步阐述本实用新型。
本说明书中涉及到的方位上均指扬声器单体的振动系统的方向，方位下均指扬声器单体的磁路系统的方向。本说明书中涉及到的内侧均指位于模组内腔内的一侧。
如图1、图3和图4共同所示，一种扬声器模组，包括外壳，外壳由依次结合在一起的模组下壳10、模组上壳20和钢片60构成，模组下壳10、模组上壳20和钢片60共同围成的空间内收容有扬声器单体30。扬声器单体30将整个模组内腔分隔为前声腔80和后声腔82，扬声器单体30、模组上壳20和钢片60共同围成前声腔80，扬声器单体30、模组上壳20和模组下壳10共同围成后声腔82。模组的出声孔70设置在扬声器单体30的侧部，位于模组上壳20的一侧侧壁上，前声腔80与出声孔70相连通。
如图1和图4共同所示，扬声器单体30包括结合在一起的单体前盖32和单体外壳34，单体前盖32和单体外壳34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单体前盖32和单体外壳34之间的振膜362，振膜362靠近单体前盖32的一侧的中部固定有球顶360，振膜362的另一侧固定有音圈364。磁路系统包括固定在单体外壳34内侧的盆架384，盆架384的内侧依次固定有磁铁382和华司380，磁铁382和华司380与盆架384的侧壁之间设有磁间隙，音圈364的端部位于磁间隙内。模组还包括一用于电连接音圈364与模组外部电路的FPCB(Flexible Printed Circuit Board，柔性印刷电路板)40，FPCB40将声波电信号传输给音圈364，音圈364根据接收到的声波电信号的大小和方向在磁间隙内做往复上下运动，振膜362和球顶360随着音圈364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4共同所示，钢片60对应球顶360的位置设有向模组内腔延伸的凹陷区62，凹陷区62的深度为0.1mm～0.2mm，本实施例中优选凹陷区62的深度为0.15mm，凹陷区62在前声腔80内形成了高度为0.15mm凸起，凹陷区62由冲压工艺加工而成。位于钢片60内侧的凹陷区62位置(即凸起的位置)粘贴有一薄片50，薄片50的厚度也为0.1mm～0.2mm，本实施例中优选薄片50的厚度为0.15mm，薄片50由PET(Polyethylene terephthalate，热塑性聚酯)、电木、亚克力等隔音材料制成，由于PET的成本较低，故本实施方式中薄片50的材质优选PET。在钢片60上设置冲压出的凹陷区62，并在凹陷区62的内侧粘贴一薄片50，且凹陷区62的深度和薄片50的厚度均为0.15mm，凹陷区62和薄片50相叠加在前声腔80内形成了高度为0.3mm的凸起，这一高度的凸起即保证了前声腔80内不会产生共振，同时又有效的减小了前声腔80的体积，从而提高了模组的中、高频性能，进而提高了模组的整体声学性能。本实施方式中优选薄片50远离出声孔70设置，薄片50远离出声孔70设置不会影响出声孔处的声道面积，从而可保证声波流通通畅，保证了模组声学性能不受影响。
如图1、图3和图4共同所示，钢片60与模组上壳20粘贴结合，模组上壳20与钢片60相结合的位置设有向下凹陷的结合部22，钢片60粘贴在结合 部22上，且钢片60的外表面与模组上壳20的该处外表面齐平或略低于模组上壳20的该处外表面。优选的靠近出声孔70侧的结合部22的侧壁与钢片60的侧壁之间留有缝隙，即此处结合部22的区域大于钢片60，结合部22的侧壁与钢片60的侧壁之间的缝隙形成了容胶槽90。结合部22的设置降低了模组的厚度，同时增加了钢片60与模组上壳20之间的接触面积，增强了钢片60与模组上壳20的结合强度。容胶槽90的设置增加了钢片60与模组上壳20之间的涂胶量，进一步的增强了钢片60与模组上壳20之间的结合强度，有效的降低了钢片60从模组上壳20上开裂或脱落的机率，增强了模组稳定性，并延长了模组的使用寿命。
如图1、图2和图3共同所示，FPCB40设置在扬声器单体30一侧短边的侧部，单体外壳34的该侧侧壁上设有两个出线槽340，音圈364的两根音圈引线366分别从两个出线槽340处伸出，FPCB40对应两个出线槽340的位置设有两个内连接部44，两根音圈引线366分别与两个内连接部44电连接，FPCB40的另一端设有两个与模组外部电路电连接的焊盘，对应FPCB40设有焊盘的位置的模组上壳20上设有一开孔，焊盘从此开孔处露出模组内腔与模组外部电路电连接。模组下壳10对应FPCB40位置的内侧设有两个定位柱14，FPCB40上对应两个定位柱14的位置分别设有一与定位柱14相适配的定位孔42，定位孔42同焊盘一起露出模组内腔，FPCB40通过定位柱14与定位孔42固定在模组下壳10上。
如图1和图4共同所示，单体外壳34为两端开口的环形结构，其上开口端与单体前盖32结合，其下开口端安装有磁路系统，盆架384的底部裸露在单体外壳34的下开口端，且盆架384底部的外表面突出单体外壳34的下端面。模组下壳10对应盆架384的底部的位置设有与盆架384的底部的大小和形状相适配的安装孔12，在模组组装完成后，盆架384的底部位于安装孔12处，且盆架384的底部的外表面与模组下壳10的外表面齐平。此结构有效的减小了模组的厚度，使得模组能够满足轻薄、小巧型电子设备的要求。
如图1和图4共同所示，模组下壳10的内侧边缘部与模组上壳20相结合 的部位设有超声线16，模组下壳10与模组上壳20之间通过超声波焊接工艺结合为一体。
本实用新型在前声腔的内壁上粘贴由隔音材料制成的薄片，减小了前声腔的体积，从而在不改变模组各部件结构的情况下提升了模组的中、高频性能，提高了模组的整体声学性能。
本说明书仅是以上述结构的模组为例对本实用新型在前声腔内贴装由隔音材料制成的薄片的技术方案进行详细的举例说明，实际应用中此技术方案不仅适合于上述结构的扬声器模组，其可适用于任何一种侧出声结构的扬声器模组中，本领域技术人员根据本说明书的描述不需要付出创造性劳动就可以将本实用新型的技术方案应用到其它侧出声结构的模组中，故无论模组的其它结构是否与上述实施例中的模组结构相同，只要是采用了在前声腔粘贴由隔音材料制成的薄片用于减小前声腔体积，提高模组的中、高频性能的扬声器模组均落入本实用新型的保护范围之内。
本实用新型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，均落在本实用新型的保护范围之内。

Claims (10)

  1. 扬声器模组，包括依次结合在一起的模组下壳、模组上壳和钢片，所述模组下壳、所述模组上壳和所述钢片围成的空间内收容有扬声器单体，所述扬声器单体、所述模组上壳和所述钢片共同围成所述模组的前声腔，所述前声腔与所述模组的出声孔相连通，所述出声孔位于所述扬声器单体的侧部；其特征在于，所述钢片的内侧粘贴有一薄片，所述薄片的厚度为0.1mm～0.2mm，所述薄片的材质为隔音材料。
  2. 根据权利要求1所述的扬声器模组，其特征在于，所述钢片对应所述扬声器单体的位置设有向所述模组内腔延伸的凹陷区，所述凹陷区的深度为0.1mm～0.2mm，所述薄片粘贴在所述凹陷区的位置。
  3. 根据权利要求2所述的扬声器模组，其特征在于，所述薄片远离所述出声孔设置。
  4. 根据权利要求3所述的扬声器模组，其特征在于，所述薄片的厚度为0.15mm，所述凹陷区的深度也为0.15mm。
  5. 根据权利要求1至4任一权利要求所述的扬声器模组，其特征在于，所述隔音材料为PET、电木或亚克力中的一种。
  6. 根据权利要求5所述的扬声器模组，其特征在于，所述钢片与所述模组上壳粘贴结合，所述模组上壳与所述钢片相结合的位置设有向下凹陷的结合部，所述钢片粘贴在所述结合部上，且所述钢片的外表面与所述模组上壳的该处外表面齐平或略低于所述模组上壳的该处外表面。
  7. 根据权利要求6所述的扬声器模组，其特征在于，所述出声孔设置在所述模组上壳的侧部，靠近所述出声孔侧的所述结合部的侧壁与所述钢片的侧壁之间留有缝隙，所述缝隙形成容胶槽。
  8. 根据权利要求7所述的扬声器模组，其特征在于，所述扬声器单体包括结合在一起的单体前盖和单体外壳，所述单体前盖和所述单体外壳围成的空间内收容有振动系统和磁路系统，所述单体外壳为两端开口的环形结构，所述磁路系统的盆架底部裸露在所述单体外壳的下开口端。
  9. 根据权利要求8所述的扬声器模组，其特征在于，所述盆架底部的外表面突出所述单体外壳的下端面，所述模组下壳对应所述盆架底部的位置设有与 所述盆架底部相适配的安装孔，所述盆架底部位于所述安装孔处，且所述盆架底部的外表面与所述模组下壳的外表面齐平。
  10. 根据权利要求9所述的扬声器模组，其特征在于，所述单体外壳的一侧侧壁上设有两个出线槽，所述振动系统的音圈的两根引线分别从两个所述出线槽处伸出并与所述FPCB电连接。
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