WO2020103301A1 - 扬声器模组 - Google Patents

扬声器模组

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Publication number
WO2020103301A1
WO2020103301A1 PCT/CN2018/125558 CN2018125558W WO2020103301A1 WO 2020103301 A1 WO2020103301 A1 WO 2020103301A1 CN 2018125558 W CN2018125558 W CN 2018125558W WO 2020103301 A1 WO2020103301 A1 WO 2020103301A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
speaker module
partition
shell
sound
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/CN2018/125558
Other languages
English (en)
French (fr)
Inventor
谭飞
陈国强
冯新涛
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
Original Assignee
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
Publication of WO2020103301A1 publication Critical patent/WO2020103301A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention relates to the technical field of sound energy conversion, in particular to a speaker module.
  • the speaker module belongs to an important acoustic component of electronic equipment and is used to complete the conversion between electrical signals and sound signals.
  • the speaker module includes an outer shell, and a speaker monomer is contained in the outer shell.
  • the speaker monomer separates the entire cavity of the module into a front acoustic cavity and a rear acoustic cavity.
  • the rear sound cavity will be filled with sound absorbing particles, and in order to prevent the sound absorbing particles from entering the speaker monomer, a partition is provided in the rear sound cavity to isolate the sound absorbing particles from the speaker monomer.
  • a clamping wall is provided on the inner surface of the module housing, and the partition is clamped and fixed by the clamping wall, but in order to ensure that the partition is effectively fixed, the protrusion height of the clamping wall on the inner surface of the housing is generally relatively small Large, which results in too much occupation of the internal space of the rear acoustic cavity, so the rear acoustic cavity can only be filled with less sound absorbing particles, so that the sound absorbing particles have a poor effect on improving the acoustic performance of the module.
  • the main purpose of the present invention is to propose a speaker module aimed at making full use of the space of the rear acoustic cavity to improve the acoustic performance of the module.
  • the speaker module proposed by the present invention includes:
  • the outer shell includes an upper shell and a lower shell, the upper shell and the lower shell are enclosed to form a receiving cavity, and the inner wall of the upper shell is provided with a slot;
  • a loudspeaker monomer is provided in the receiving cavity, the loudspeaker monomer and the upper casing together form a front acoustic cavity, and the loudspeaker monomer, the lower casing and the upper casing together form a rear acoustic cavity,
  • a sound hole is provided on the housing, and the front sound cavity communicates with the sound hole;
  • a baffle is provided in the rear acoustic cavity, and the rear acoustic cavity is partitioned into a first rear cavity and a second rear cavity, the partition and the lower shell are integrally injection molded, and the partition and the The slot is plugged in, the speaker unit is located in the first back cavity, and the second back cavity is filled with sound absorbing particles.
  • the upper shell includes a bottom wall and a peripheral wall
  • the bottom wall is disposed opposite to the lower shell
  • the peripheral wall surrounds the peripheral edge of the bottom wall
  • the lower housing cover is disposed on the peripheral wall
  • the slot includes portions on two opposite wall surfaces of the peripheral wall.
  • the slot further includes a portion located on the bottom wall.
  • the lower case is provided with a filling hole
  • the speaker module further includes a cover plate, the cover plate covers the filling hole, and the cover plate is detachably connected to the lower case .
  • the partition plate is provided with a communication hole
  • the speaker module further includes a mesh cloth, the mesh cloth is fixed to the partition plate, and is covered with the communication hole and provided.
  • the mesh cloth and the separator are integrally injection molded.
  • a hot-melt part is provided on the partition, and the mesh cloth and the partition are fixed by the hot-melt part.
  • the mesh cloth is bonded and fixed to the separator.
  • the mesh cloth is located on a side of the partition facing the first rear cavity.
  • the partition plate is provided with a plurality of breathable mesh holes so that the partition plate is arranged in a mesh shape.
  • the rear acoustic cavity of the speaker module is divided into a first rear cavity and a second rear cavity by providing a partition plate, and the sound absorbing particles are directly filled into the second rear cavity. Ensuring that the sound-absorbing particles are filled in all corners of the second rear cavity can greatly increase the number of sound-absorbing particles and enhance the sound-absorbing effect.
  • the second back cavity is isolated from the first back cavity by a partition, and the partition blocks the sound absorbing particles in the second back cavity to prevent the sound absorbing particles from entering the first back cavity and then entering the speaker unit.
  • the separator that plays the role of isolation is integrally formed with the lower shell, compared with the separation of the separator and the lower shell, the integral molding method is formed by the mold at one time, eliminating the subsequent assembly process and simplifying Speaker module installation procedure.
  • the baffle for the separate arrangement of the baffle and the lower shell, in some examples, two clamping walls are provided on the inner surface of the lower shell to clamp the baffle, and the space in the rear acoustic cavity is reduced due to the installation of the clamping wall Therefore, the filling space of the sound-absorbing particles is reduced, and the integrated molding method can reduce or even eliminate the setting of the clamping wall, thereby greatly reducing the occupation of the space of the rear acoustic cavity and increasing the filling space of the sound-absorbing particles. Furthermore, by providing a slot for the partition board to be plugged in, it can play a limiting role on the partition board, avoid the deviation of the partition board, and can play a better isolation effect.
  • FIG. 1 is a schematic structural diagram of an embodiment of a speaker module of the present invention
  • FIG. 2 is a schematic cross-sectional view of the speaker module in FIG. 1 taken along line A-A;
  • FIG. 3 is an exploded schematic view of the speaker module in FIG. 1;
  • FIG. 4 is a schematic structural view of the lower shell in FIG. 3;
  • FIG. 5 is a schematic structural view of the upper shell in FIG. 3.
  • Label name Label name 10 shell 131 Anterior acoustic cavity 11 Upper shell 132 Rear acoustic cavity 111 Clamping wall 1321 First back cavity 112 Slot 1322 Second back cavity 113 Sound hole 20 Speaker unit 114 Bottom wall 30 Isolation parts 115 Zhou Bi 31 Clapboard 12 Lower shell 311 Via 121 Cover 312 Reinforcement 122 Filling hole 32 net 13 Containment cavity A A
  • the directional indicator is only used to explain a specific posture (as shown in the drawings) The relative positional relationship, movements, etc. of the components below, if the specific posture changes, then the directional indication changes accordingly.
  • first”, “second”, etc. are for descriptive purposes only, and cannot be understood as instructions or hints Its relative importance or implicitly indicates the number of technical features indicated.
  • the features defined with “first” and “second” may include at least one of the features either explicitly or implicitly.
  • the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those skilled in the art to realize. When the combination of technical solutions contradicts or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the protection scope claimed by the present invention.
  • the present invention proposes a speaker module, which can be used in devices capable of producing sound, such as headphones and mobile phones.
  • the speaker module includes a housing 10 and a speaker unit 20, a housing cavity 13 is formed in the housing 10, and the housing 10 is provided with a sound hole 113 communicating with the housing cavity 13, the speaker unit 20 It is provided in the accommodating cavity 13, and the accommodating cavity 13 is partitioned into a front acoustic cavity 131 and a rear acoustic cavity 132, and a sound outlet 113 is provided in the front acoustic cavity 131.
  • the speaker unit 20 includes a vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm and a voice coil fixed to one side of the diaphragm.
  • the diaphragm includes a central portion, a folded ring portion disposed around the central portion, and a folded
  • the fixing portion provided in the ring portion and the diaphragm may further include a composite layer bonded to the central portion.
  • the magnetic circuit system includes a magnetic yoke, and the magnetic yoke is provided with an inner magnetic circuit part and an outer magnetic circuit part, and a magnetic gap containing a voice coil is formed between the two.
  • the inner magnetic circuit part includes a central magnet provided at the center of the magnetic yoke and a central magnetic plate provided on the central magnet
  • the outer magnetic circuit part includes an edge provided at the edge of the magnetic yoke The magnet and the side magnetic guide plate provided on the side magnet.
  • the speaker unit 20 may further include an auxiliary system, which includes a housing for accommodating the fixed vibration system and the magnetic circuit system.
  • the auxiliary system may further include a front cover, the front cover is combined with the housing, and the front cover and the housing surround the protective frame of the speaker unit 20.
  • the speaker unit 20 may not include the auxiliary system.
  • the speaker module further includes a partition 31 that partitions the rear acoustic cavity 132 into a first rear cavity 1321 and a second rear cavity 1322.
  • the partition 31 and the housing 10 are integrally injection molded. It is conceivable that since the first rear cavity 1321 and the second rear cavity 1322 are in communication, a through hole is provided in the partition plate 31 to play a communication role.
  • the speaker unit 20 is located in the first back cavity 1321, the second back cavity 1322 is filled with sound absorbing particles, and the partition 31 encapsulates the sound absorbing particles in the second back cavity 1322, thereby preventing the sound absorbing particles from entering the first back cavity 1321.
  • the sound-absorbing particles are a mixture of one or more of natural zeolite powder, white carbon black, activated carbon, etc.
  • the sound-absorbing particles can also be made of other materials as long as they can provide a sound-absorbing effect.
  • the rear acoustic cavity 132 of the speaker module is divided into a first rear cavity 1321 and a second rear cavity 1322 by providing a partition 31, and the sound absorbing particles are directly filled into the second rear cavity 1322 without passing through the sound absorbing particles It is encapsulated separately, so that it can ensure that the sound absorbing particles are filled into all corners of the second rear cavity 1322, which can greatly increase the number of sound absorbing particles and enhance the sound absorbing effect.
  • the second rear cavity 1322 is isolated from the first rear cavity 1321 by a partition 31, and the partition 31 blocks the sound absorbing particles in the second rear cavity 1322, which can prevent the sound absorbing particles from entering the first rear cavity 1321 and then entering the speaker monomer 20.
  • the partition plate 31 with isolation function is integrally formed with the casing 10, compared with the separate arrangement of the partition plate 31 and the casing 10, the integral molding method is formed by a mold at a time, eliminating the subsequent assembly process, The installation procedure of the speaker module is simplified.
  • two clamping walls are provided on the inner surface of the housing 10 to clamp the partition 31, and the rear acoustic cavity is caused by the installation of the clamping wall
  • the space in the 132 is reduced, so the filling space of the sound-absorbing particles is reduced, and the integrated molding method can reduce or even eliminate the setting of the clamping wall, thereby greatly reducing the occupation of the space of the rear acoustic cavity 132 and increasing the sound-absorbing particles Filling space.
  • the housing 10 includes an upper shell 11 and a lower shell 12, the upper shell 11 and the lower shell 12 are enclosed to form a receiving cavity 13, the speaker unit 20 and the upper housing 11 together form a front sound cavity 131, the speaker unit 20, and the lower housing 12 and the upper shell 11 enclose together to form a rear acoustic cavity 132.
  • the speaker unit 20 and the upper shell 11 are fixed by adhesion.
  • the partition plate 31 and the lower shell 12 are integrally injection-molded, and the end of the partition plate 31 away from the lower shell 12 is in contact with the upper shell 11 so as to isolate the first rear cavity 1321 and the second rear cavity 1322.
  • the partition 31 and the lower shell 12 are integrally formed, there is no installation gap between the partition 31 and the lower shell 12, and the consistency between the two is better.
  • the upper shell 11 and the lower shell 12 are assembled At this time, it is only necessary to consider the assembly between the partition 31 and the upper shell 11, since there is no need to consider the assembly between the partition 31 and the upper shell 11 and the partition 31 and the lower shell 12, so the The consistency during assembly is better, which is conducive to automated assembly, and the gap generated by assembly is less, so the product quality is easier to guarantee.
  • the upper shell 11 is provided with a slot 112, the slot 112 is located in the rear acoustic cavity 132, and the partition 31 is inserted into the slot 112.
  • the slot 112 By providing the slot 112 for inserting the partition 31, it can play a limiting role on the partition 31, avoid deviation of the partition 31, and can play a better isolation effect.
  • the partition 31 and the slot 112 are tightly fitted and inserted, so as to achieve better sealing and prevent sound-absorbing particles from passing through the connection gap between the partition 31 and the slot 112.
  • the lower shell 12 is provided in a plate shape, and the upper shell 11 is in the shape of a cavity open toward the lower shell 12 and includes a bottom wall 114 and a peripheral wall 115 connected to each other.
  • the bottom wall 114 is opposite to the lower shell 12.
  • the peripheral wall 115 extends in an annular shape along the peripheral edge of the bottom wall 114, and the lower shell 12 covers the end of the peripheral wall 115 away from the bottom wall 114.
  • the slot 112 includes portions on two opposite wall surfaces of the peripheral wall 115, so that when the partition 31 is inserted toward the upper shell 11, the partition 31 can slide along the slot 112 on the peripheral wall 115, The slot 112 on the peripheral wall 115 can guide the insertion of the partition plate 31.
  • the slot 112 further includes a portion located on the bottom wall 114, and the partition 31 is inserted into the slot 112 on the bottom wall 114, thereby wrapping all side edges of the partition 31 except the side connected to the lower case 12 Therefore, the first rear cavity 1321 and the second rear cavity 1322 play a better role in isolation and achieve a better sealing effect.
  • two clamping walls 111 are provided on the upper shell 11, and the two clamping walls 111 are opposed and spaced apart, and the space between the two clamping walls 111 constitutes a slot 112.
  • the slot 112 may be formed on the upper case 11 by removing surface material.
  • the upper shell 11 and the lower shell 12 are bonded or welded, and the gap at the connection between the upper shell 11 and the lower shell 12 can be eliminated by means of bonding or welding to achieve a better sealing effect between the two.
  • the upper shell 11 and the lower shell 12 can also be connected by a snap.
  • the lower case 12 is provided with a filling hole 122
  • the speaker module further includes a cover plate 121
  • the cover plate 121 covers the filling hole 122.
  • the sound-absorbing particles can be poured into the second rear cavity 1322 from the filling hole 122, which can ensure that the entire second rear cavity 1322 is filled with sound-absorbing particles;
  • the cover 121 closes the filling hole 122 to avoid leakage of sound-absorbing particles.
  • the cover plate 121 is detachably connected to the lower case 12, so that it is convenient to open the cover plate 121 to replace the sound absorbing particles.
  • the holes of the cover plate 121 and the filling hole 122 can be provided with threads, so that the cover plate 121 and the lower shell 12 are screwed tightly; in addition, the cover plate 121 and the lower shell 12 can also be clamped or screwed Wait for the connection.
  • the partition 31 is provided with a communication hole 311, so that the partition 31 is provided in a frame shape, the speaker module further includes a mesh cloth 32, the mesh cloth 32 is fixed to the partition 31, and covers the communication hole 311 is provided, and the mesh cloth 32 and the partition plate 31 together form an isolation member 30 for separating the first rear cavity 1321 and the second rear cavity 1322.
  • the mesh 32 is easy to process, and the meshes on it can be made smaller, it can play a better blocking effect on the sound-absorbing particles, and the mesh 32 has better air permeability, so it can ensure the smooth flow of air .
  • the partition 31 is in the form of a frame, which greatly reduces the blocking area of the partition 31, and can ensure the air circulation between the first rear cavity 1321 and the second rear cavity 1322. Further, the partition 31 is provided with reinforcing ribs 312, which are respectively connected to two opposite sides of the partition 31, and the communication hole 311 is partitioned into two through holes. The reinforcing ribs 312 can play a structural role in strengthening the frame-shaped partition plate 31 to prevent the partition plate 31 from being co-extruded and deformed by the upper shell 11 and the lower shell 12.
  • the mesh cloth 32 and the separator 31 there are various fixing methods between the mesh cloth 32 and the separator 31, for example, the mesh cloth 32 and the separator 31 are integrally injection-molded, and the mesh cloth 32 is injection-molded together with the separator 31 as an insert;
  • the partition plate 31 is provided with a hot melt, and the mesh cloth 32 and the partition plate 31 are hot-melted and fixed by the hot melt element; or, the mesh cloth 32 and the partition plate 31 are bonded and fixed.
  • the mesh cloth 32 and the partition plate 31 can also be fixed with nails or the like.
  • the mesh cloth 32 is located on the side of the partition plate 31 facing the first rear cavity 1321, thereby avoiding the occupation of the space in the second rear cavity 1322 by the mesh cloth 32, thereby ensuring that the second rear cavity 1322 can be accommodated More sound-absorbing particles.
  • the isolation member 30 may include only the partition 31, and the partition 31 is provided with a plurality of air-permeable meshes, so that the partition 31 is arranged in a mesh shape, thus eliminating the part of the mesh 32
  • the partition 31 itself blocks the sound-absorbing particles.
  • the diameter of the air-permeable mesh is smaller than the outer diameter of the sound-absorbing particles to prevent the sound-absorbing particles from drilling into the first rear cavity 1321 from the air-permeable mesh.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本发明公开一种扬声器模组，扬声器模组包括：外壳，包括上壳和下壳，所述上壳和所述下壳围合形成收容腔，所述上壳的内壁设有插槽；扬声器单体，设于所述收容腔内，所述扬声器单体与所述上壳共同围成前声腔，所述扬声器单体、所述下壳和所述上壳共同围合形成后声腔，所述外壳上设有出声孔，所述前声腔与所述出声孔连通；以及隔板，设于所述后声腔，并将所述后声腔隔设为第一后腔和第二后腔，所述隔板与所述下壳一体注塑成型，且所述隔板与所述插槽插接，所述扬声器单体位于所述第一后腔，所述第二后腔填充有吸音颗粒。本发明技术方案能够充分利用后声腔的空间来提高模组的声学性能。

Description

扬声器模组 技术领域
本发明涉及声能转换技术领域，特别涉及一种扬声器模组。
背景技术
扬声器模组作为一种能量转换器件，属于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。通常，扬声器模组包括外壳，外壳内收容有扬声器单体，扬声器单体将整个模组内腔分隔成前声腔和后声腔两个腔体。为了降低模组低频，扩展带宽，在后声腔内会填充吸音颗粒，而为了避免吸音颗粒进入扬声器单体内，在后声腔内设有隔板，隔板将吸音颗粒与扬声器单体隔离开来。
一般地，在模组外壳的内表面上设有夹持壁，隔板由夹持壁夹持固定，但是为能够保证隔板被有效固定，夹持壁在外壳内表面的凸起高度一般较大，如此导致对后声腔内部空间占用过多，因此后声腔内仅能够填充较少的吸音颗粒，从而使得吸音颗粒对模组声学性能的改善效果较差。
发明内容
本发明的主要目的是提出一种扬声器模组，旨在充分利用后声腔的空间来提高模组的声学性能。
为实现上述目的，本发明提出的扬声器模组，包括：
外壳，包括上壳和下壳，所述上壳和所述下壳围合形成收容腔，所述上壳的内壁设有插槽；
扬声器单体，设于所述收容腔内，所述扬声器单体与所述上壳共同围成前声腔，所述扬声器单体、所述下壳和所述上壳共同围合形成后声腔，所述外壳上设有出声孔，所述前声腔与所述出声孔连通；以及
隔板，设于所述后声腔，并将所述后声腔隔设为第一后腔和第二后腔，所述隔板与所述下壳一体注塑成型，且所述隔板与所述插槽插接，所述扬声 器单体位于所述第一后腔，所述第二后腔填充有吸音颗粒。
可选地，所述上壳包括底壁和周壁，所述底壁与所述下壳相对设置，所述周壁围设于所述底壁的周缘，所述下壳盖设于所述周壁的远离所述底壁的一端，所述插槽包括位于所述周壁的相对的两个壁面上的部分。
可选地，所述插槽还包括位于所述底壁上的部分。
可选地，所述下壳上设有灌装孔，所述扬声器模组还包括盖板，所述盖板盖合所述灌装孔，且所述盖板与所述下壳可拆卸连接。
可选地，所述隔板上设有连通孔，所述扬声器模组还包括网布，所述网布与所述隔板固定，并盖合所述连通孔设置。
可选地，所述网布与所述隔板一体注塑成型。
可选地，所述隔板上设有热熔件，所述网布与所述隔板通过所述热熔件热熔固定。
可选地，所述网布与所述隔板粘接固定。
可选地，所述网布位于所述隔板的朝向所述第一后腔的一侧。
可选地，所述隔板上设有多个所述透气网孔，以使所述隔板呈筛网状设置。
本发明中，通过设置隔板将扬声器模组的后声腔隔设为第一后腔和第二后腔，吸音颗粒是直接填充到第二后腔内的，吸音颗粒不用经过单独封装，因此能够保证吸音颗粒填充到第二后腔内的各个角落，可大大提高吸音颗粒的数量，增强吸音效果。并且，第二后腔通过隔板而与第一后腔隔绝，隔板将吸音颗粒阻挡在第二后腔内，可防止吸音颗粒进入第一后腔进而进入扬声器单体。同时，由于起到隔离作用的隔板是与下壳一体成型的，相较于隔板与下壳分体设置而言，一体成型的方式通过模具一次成型，免去了后续组装工序，简化了扬声器模组的安装程序。对于隔板与下壳分体设置而言，在一些示例中为能够固定隔板，在下壳内表面设置两夹持壁来夹持隔板，由于夹持壁的设置导致后声腔内空间减小，故减小了吸音颗粒的填充空间，而该一体成型的方式，能够减少甚至免去夹持壁的设置，因而能够大大减少对后声腔空间的占用，增大吸音颗粒的灌装空间。再者，通过设置插槽供隔板插接的方式，能够对隔板起到限位作用，避免隔板发生偏移，可以起到更好的隔 离效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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示出的结构获得其他的附图。
图1为本发明扬声器模组一实施例的结构示意图；
图2为图1中扬声器模组沿A-A剖线的剖切示意图；
图3为图1中扬声器模组的分解示意图；
图4为图3中下壳的结构示意图；
图5为图3中上壳的结构示意图。
附图标号说明：
标号 名称 标号 名称
10 外壳 131 前声腔
11 上壳 132 后声腔
111 夹持壁 1321 第一后腔
112 插槽 1322 第二后腔
113 出声孔 20 扬声器单体
114 底壁 30 隔离部件
115 周壁 31 隔板
12 下壳 311 连通孔
121 盖板 312 加强筋
122 灌装孔 32 网布
13 收容腔    
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
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作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示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。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其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”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种扬声器模组，该扬声器模组能够用于耳机、手机等能够发声的设备。
请结合参考图1至图3，扬声器模组包括外壳10和扬声器单体20，外壳10内形成有收容腔13，且外壳10设有与收容腔13连通的出声孔113，扬声器单体20设于收容腔13内，并将收容腔13隔设为前声腔131和后声腔132，出声孔113设于前声腔131。本实施例中，扬声器单体20包括振动系统和磁路系统，振动系统包括振膜以及固定于振膜一侧的音圈，振膜包括中心部、围绕中心部设置的折环部以及围绕折环部设置的固定部，振膜还可以包括结合于中心部的复合层。磁路系统包括导磁轭，导磁轭上设有内磁路部分和外磁路部分，两者之间形成容纳音圈的磁间隙。其中，一种情况下，内磁路部分包括设于导磁轭的中央位置的中心磁铁和设于中心磁铁上的中心导磁板，外磁路部分包括设于导磁轭的边缘位置的边磁铁和设于边磁铁上的边导磁板。扬声器单体20还可包括辅助系统，辅助系统包括壳体，壳体用于收容固 定振动系统和磁路系统。此外，辅助系统还可包括前盖，前盖结合于壳体的上方，前盖和壳体围合成扬声器单体20的保护框架。当然，在一些情况下，扬声器单体20也可不包括辅助系统。
请结合参考图4，进一步地，扬声器模组还包括隔板31，隔板31将后声腔132隔设为第一后腔1321和第二后腔1322，隔板31与外壳10一体注塑成型。可以想到的是，由于第一后腔1321和第二后腔1322是连通的，故在隔板31上设有通孔以起到连通作用。本实施例中，扬声器单体20位于第一后腔1321，第二后腔1322填充有吸音颗粒，隔板31将吸音颗粒封装在第二后腔1322内，从而阻止吸音颗粒进入第一后腔1321。该实施例中，吸音颗粒为天然沸石粉、白炭黑、活性炭等其中的一者或多者的混合物，当然，吸音颗粒还可采用其它的材质，只要能够起到吸音效果即可。
本发明中，通过设置隔板31将扬声器模组的后声腔132隔设为第一后腔1321和第二后腔1322，吸音颗粒是直接填充到第二后腔1322内的，吸音颗粒不用经过单独封装，因此能够保证吸音颗粒填充到第二后腔1322内的各个角落，可大大提高吸音颗粒的数量，增强吸音效果。并且，第二后腔1322通过隔板31而与第一后腔1321隔绝，隔板31将吸音颗粒阻挡在第二后腔1322内，可防止吸音颗粒进入第一后腔1321进而进入扬声器单体20。同时，由于起到隔离作用的隔板31是与外壳10一体成型的，相较于隔板31与外壳10分体设置而言，一体成型的方式通过模具一次成型，免去了后续组装工序，简化了扬声器模组的安装程序。对于隔板31与外壳10分体设置而言，在一些示例中为能够固定隔板31，在外壳10内表面设置两夹持壁来夹持隔板31，由于夹持壁的设置导致后声腔132内空间减小，故减小了吸音颗粒的填充空间，而该一体成型的方式，能够减少甚至免去夹持壁的设置，因而能够大大减少对后声腔132空间的占用，增大吸音颗粒的灌装空间。
具体地，外壳10包括上壳11和下壳12，上壳11和下壳12围合形成收容腔13，扬声器单体20与上壳11共同围成前声腔131，扬声器单体20、下壳12和上壳11共同围合形成后声腔132。可选地，扬声器单体20与上壳11之间粘接固定。本实施例中，隔板31与下壳12一体注塑成型，隔板31的远离下壳12的一端则与上壳11抵接，从而实现第一后腔1321和第二后腔1322 的隔离。本实施例中，由于隔板31与下壳12一体成型，隔板31与下壳12之间不存在安装间隙，两者之间的一致性更好，当上壳11和下壳12进行组装时，仅需要考虑隔板31与上壳11之间的装配即可，由于不需要同时考虑隔板31和上壳11以及隔板31和下壳12之间的装配，因此在与上壳11进行装配时的一致性更好，利于自动化装配，装配所产生的间隙更少，因此产品质量更容易保证。
请结合参考图5，进一步地，上壳11设有插槽112，插槽112位于后声腔132，隔板31与插槽112插接。通过设置插槽112供隔板31插接的方式，能够对隔板31起到限位作用，避免隔板31发生偏移，可以起到更好的隔离效果。可选地，隔板31与插槽112紧配插合，从而实现更好的密封，阻止吸音颗粒从隔板31与插槽112之间的连接缝隙通过。本实施例中，下壳12呈板状设置，上壳11呈朝下壳12敞口的空腔状，并包括相互连接的底壁114和周壁115，底壁114与下壳12相对设置，周壁115沿着底壁114的周缘延伸而呈环状，下壳12盖设于周壁115的远离底壁114的一端。可选地，插槽112包括位于周壁115的相对的两个壁面上的部分，如此在将隔板31朝上壳11插装时，隔板31可顺着周壁115上的插槽112滑动，该周壁115上的插槽112能够对隔板31的插装起到导向作用。进一步地，插槽112还包括位于底壁114上的部分，隔板31插入底壁114上的插槽112，从而将隔板31的除与下壳12连接的一侧以外的所有侧缘包裹，故对第一后腔1321和第二后腔1322起到更好的隔离作用，实现更好密封效果。具体地，在上壳11上设有两夹持壁111，两夹持壁111相对且间隔设置，两夹持壁111之间的间隔构成插槽112。此外，也可在上壳11上通过去除表面材料的形式形成插槽112。
上述中，上壳11和下壳12粘接或焊接，采用粘接或焊接的方式能够消除上壳11和下壳12的连接处的缝隙，实现两者更好的密封效果。另外，上壳11和下壳12也可采用卡扣进行连接。
进一步地，下壳12上设有灌装孔122，扬声器模组还包括盖板121，盖板121盖合灌装孔122。本实施例中，在将上壳11和下壳12组装好之后，能够将吸音颗粒从灌装孔122中灌入第二后腔1322，可以保证整个第二后腔1322填充满吸音颗粒；另外，盖板121将灌装孔122盖合，避免了吸音颗粒漏出。可选地，盖板121与下壳12可拆卸连接，从而方便打开盖板121来更 换吸音颗粒。具体地，盖板121以及灌装孔122的孔缘处均可设置螺纹，以使盖板121与下壳12通过螺纹拧紧；另外，盖板121和下壳12还可通过卡扣或是螺钉等进行连接。
在一些实施例中，隔板31上设有连通孔311，以使隔板31呈框体状设置，扬声器模组还包括网布32，网布32与隔板31固定，并盖合连通孔311设置，网布32与隔板31共同形成用于隔开第一后腔1321和第二后腔1322的隔离部件30。由于网布32易于加工，且其上的网孔能够做得较小，因此能够对吸音颗粒起到较好的阻挡效果，再者网布32的透气性能较好，故能够保证空气的顺畅流通。隔板31呈框体状的形式大大减小了隔板31的阻挡面积，能够确保第一后腔1321和第二后腔1322之间空气的流通。进一步地，隔板31上设有加强筋312，加强筋312分别连接隔板31的两相对侧，并将连通孔311隔设为两个通孔。加强筋312可对框体状的隔板31起到结构加强作用，避免隔板31被上壳11和下壳12共同挤压而变形。
本实施例中，网布32与隔板31之间的固定方式具有多种，例如，网布32与隔板31一体注塑成型，该网布32作为嵌件而与隔板31一起注塑成型；或者，隔板31上设有热熔件，网布32与隔板31通过热熔件热熔固定；或者，网布32与隔板31粘接固定。另外，网布32和隔板31还可采用钉子等进行固定。
可选地，网布32位于隔板31的朝向第一后腔1321的一侧，由此能够避免网布32对第二后腔1322内空间的占用，从而确保第二后腔1322内能够容纳更多的吸音颗粒。
在另一些实施例中，隔离部件30可仅包括隔板31，隔板31上设有多个透气网孔，以使隔板31呈筛网状设置，如此免去了网布32这一部件，隔板31本身对吸音颗粒起到阻挡作用。透气网孔的孔径是小于吸音颗粒的外径的，以避免吸音颗粒从透气网孔钻入第一后腔1321。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (10)

  1. 一种扬声器模组，其特征在于，包括：
    外壳，包括上壳和下壳，所述上壳和所述下壳围合形成收容腔，所述上壳的内壁设有插槽；
    扬声器单体，设于所述收容腔内，所述扬声器单体与所述上壳共同围成前声腔，所述扬声器单体、所述下壳和所述上壳共同围合形成后声腔，所述外壳上设有出声孔，所述前声腔与所述出声孔连通；以及
    隔板，设于所述后声腔，并将所述后声腔隔设为第一后腔和第二后腔，所述隔板与所述下壳一体注塑成型，且所述隔板与所述插槽插接，所述扬声器单体位于所述第一后腔，所述第二后腔填充有吸音颗粒。
  2. 如权利要求1所述的扬声器模组，其特征在于，所述上壳包括底壁和周壁，所述底壁与所述下壳相对设置，所述周壁围设于所述底壁的周缘，所述下壳盖设于所述周壁的远离所述底壁的一端，所述插槽包括位于所述周壁的相对的两个壁面上的部分。
  3. 如权利要求2所述的扬声器模组，其特征在于，所述插槽还包括位于所述底壁上的部分。
  4. 如权利要求1所述的扬声器模组，其特征在于，所述下壳上设有灌装孔，所述扬声器模组还包括盖板，所述盖板盖合所述灌装孔，且所述盖板与所述下壳可拆卸连接。
  5. 如权利要求1至4任意一项所述的扬声器模组，其特征在于，所述隔板上设有连通孔，所述扬声器模组还包括网布，所述网布与所述隔板固定，并盖合所述连通孔设置。
  6. 如权利要求5所述的扬声器模组，其特征在于，所述网布与所述隔板一体注塑成型。
  7. 如权利要求5所述的扬声器模组，其特征在于，所述隔板上设有热熔件，所述网布与所述隔板通过所述热熔件热熔固定。
  8. 如权利要求5所述的扬声器模组，其特征在于，所述网布与所述隔板粘接固定。
  9. 如权利要求5所述的扬声器模组，其特征在于，所述网布位于所述隔板的朝向所述第一后腔的一侧。
  10. 如权利要求1至4任意一项所述的扬声器模组，其特征在于，所述隔板上设有多个透气网孔，以使所述隔板呈筛网状设置。
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