WO2022111675A1 - 振膜单元和扬声器 - Google Patents

振膜单元和扬声器 Download PDF

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Publication number
WO2022111675A1
WO2022111675A1 PCT/CN2021/133874 CN2021133874W WO2022111675A1 WO 2022111675 A1 WO2022111675 A1 WO 2022111675A1 CN 2021133874 W CN2021133874 W CN 2021133874W WO 2022111675 A1 WO2022111675 A1 WO 2022111675A1
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WO
WIPO (PCT)
Prior art keywords
arc
shaped
magnetic circuit
magnetic
plate
Prior art date
Application number
PCT/CN2021/133874
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English (en)
French (fr)
Inventor
刘松
张琳琳
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歌尔股份有限公司
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022111675A1 publication Critical patent/WO2022111675A1/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
    • 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
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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 utility model relates to the technical field of sound energy conversion, in particular to a diaphragm unit and a loudspeaker.
  • the purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a diaphragm unit and a loudspeaker.
  • the diaphragm unit includes an arc-shaped diaphragm and an arc-shaped diaphragm arranged around the arc-shaped diaphragm, and the arc-shaped diaphragm and the arc-shaped diaphragm face toward the arc-shaped diaphragm. bulges away from the magnetic circuit system,
  • the side of the arc-shaped vibrating plate facing the magnetic circuit system is provided with a supporting connection part integrally formed therewith, and the side of the supporting connection part facing the magnetic circuit system is a flat plane connection surface.
  • the arc-shaped vibration plate and the support connection portion are processed and formed by injection molding.
  • the material of the arc-shaped vibration plate and the support connection portion is PEI, LCP or PET.
  • the support connection portion includes an annular side wall adapted to the shape of the voice coil, the top surface of the annular side wall is an arc-shaped top surface, and the arc-shaped top surface It is the same as the convex direction of the arc-shaped vibration plate and is installed at the bottom of the arc-shaped vibration plate;
  • the bottom surface of the annular side wall forms the planar mounting surface.
  • the annular sidewall is provided with several grooves.
  • the groove is provided on the side surface of the annular side wall, and the groove is a blind hole or a through hole.
  • the speaker according to the embodiment of the present invention includes a magnetic circuit system and a vibration system,
  • the magnetic circuit system includes a magnetic conductive yoke with a flat bottom wall, a central magnetic circuit portion provided on the magnetic conductive yoke, and a side magnetic circuit portion arranged around the central magnetic circuit portion, the central magnetic circuit A magnetic gap is formed between the part and the side magnetic circuit part;
  • the vibration system includes the above-mentioned diaphragm unit, and the voice coil is fixed on the plane mounting surface of the arc-shaped vibration plate and inserted into the magnetic gap of the magnetic circuit system.
  • the speaker further includes a casing, the casing includes an upper casing and a lower casing, and the arc-shaped diaphragm, the arc-shaped diaphragm and the upper casing are integrally formed.
  • the arc-shaped diaphragm is integrally formed with the arc-shaped vibration plate and the upper casing by hot pressing or injection molding.
  • the upper case is provided with a positioning protrusion
  • the lower case is provided with a positioning groove corresponding to the positioning protrusion
  • the two side magnetic circuit portions are respectively disposed at two long sides of the magnetic yoke and on both sides of the central magnetic circuit portion, and the central magnetic circuit portion includes a central magnetic circuit portion.
  • the central magnetic circuit portion includes a central magnetic circuit portion.
  • the side magnetic conducting plate is an integrally formed structure, and includes two main body parts covering the side magnets and two connecting rings connecting the main body parts.
  • one end of the connecting ring away from the main body portion extends to the magnetic conductive yoke in a direction away from the vibration system, and extends to the magnetic conductive yoke in a direction away from the main body portion edge of the yoke.
  • the space of the arc-shaped housing part of the electronic equipment is fully utilized, the vibration space of the voice coil and the vibration amplitude of the diaphragm are improved, and the arc-shaped vibration amplitude is effectively increased.
  • the rigidity of the vibration plate reduces the high-frequency resonance of the arc vibration plate, improves the high-frequency characteristics of the speaker, and expands the frequency bandwidth of the speaker; in addition, the integrated processing method simplifies the assembly process of the material and saves manpower and material resources. ;
  • the arc-shaped diaphragm unit can be used in conjunction with the conventional style voice coil and the conventional style magnetic circuit system. Compared with the arc voice coil and the arc magnetic circuit system, the conventional style sound
  • the magnetic circuit system of the coil and the conventional style is simpler to process, more mature in the manufacturing process, lower in cost, and can achieve better acoustic performance.
  • FIG. 1 is a schematic structural diagram of an embodiment of an arc-shaped vibrating plate of the present invention
  • FIG. 2 is a schematic structural diagram of another embodiment of the arc-shaped vibrating plate of the present invention.
  • FIG. 3 is a schematic structural diagram of yet another embodiment of the arc-shaped vibrating plate of the present invention.
  • FIG. 4 is a schematic structural diagram of a speaker according to an embodiment of the present invention.
  • FIG. 5 is an exploded view of the structure of the magnetic circuit system in the speaker of the present invention.
  • FIG. 6 is an exploded view of the structure of the vibration system in the loudspeaker of the present invention.
  • Fig. 7 is the structural representation of the diaphragm unit and some components thereof in the loudspeaker of the present invention.
  • FIG. 8 is a structural schematic diagram of the housing positioning structure in the speaker of the present invention.
  • FIG. 9 is a schematic cross-sectional view of the diaphragm unit and some components thereof in the speaker of the present invention.
  • the diaphragm unit 21 according to the embodiment of the present invention, please refer to FIG. 1 to FIG. 9 in combination, including an arc-shaped vibration plate 212 and an arc-shaped vibration plate 211 arranged around the arc-shaped vibration plate 212 , the arc-shaped vibration plate 212 and the arc-shaped vibration plate 212
  • the diaphragm 211 protrudes away from the magnetic circuit system 1
  • the side of the arc-shaped vibration plate 212 facing the magnetic circuit system 1 is provided with a supporting connecting portion 2121 integrally formed therewith, and the supporting connecting portion 2121 faces the magnetic circuit system 1 side It is a flat plane mounting surface 2121a.
  • the supporting connecting portion 2121 integrally formed with the arc-shaped vibration plate 212 of the diaphragm unit 21 By arranging the supporting connecting portion 2121 integrally formed with the arc-shaped vibration plate 212 of the diaphragm unit 21, while making full use of the space of the arc-shaped housing part of the electronic device, improving the vibration space of the voice coil 22 and the vibration amplitude of the diaphragm, The rigidity of the arc-shaped vibration plate 212 is effectively increased, the high-frequency resonance of the arc-shaped vibration plate 212 is reduced, the high-frequency characteristics of the speaker 100 are improved, and the frequency bandwidth of the speaker 100 is expanded; in addition, the integrated processing method simplifies the material The assembling process saves manpower and material resources; and through the setting of the plane mounting surface 2121a, the arc-shaped diaphragm unit 21 can be used in conjunction with the conventional style voice coil 22 and the conventional style magnetic circuit system 1.
  • the arc-shaped vibration plate 212 and the support connecting portion 2121 are processed by injection molding, which is simple in processing and low in manufacturing cost.
  • the arc-shaped vibration plate 212 and the support connection portion 2121 can also be processed in other ways according to the materials, which is not limited.
  • the material of the arc-shaped vibration plate 212 and the support connecting portion 2121 is PEI, LCP or PET, which has the advantages of high rigidity and excellent support and vibration performance.
  • the materials of the arc-shaped vibration plate 212 and the support connecting portion 2121 can also be selected from other suitable materials as required, which is not limited.
  • the support connection portion 2121 includes an annular side wall 2121b adapted to the shape of the 22 voice coil, the top surface of the annular side wall 2121b is an arc top surface, and the arc top surface and the arc vibration
  • the protruding direction of the plate 212 is the same and is installed on the bottom of the arc-shaped vibration plate 212.
  • the bottom surface of the annular side wall 2121b forms a flat plane mounting surface 2121a, which is used to fix the traditional annular voice coil 22, and does not need to use the arc-shaped voice coil.
  • the traditional annular voice coil 22 can achieve better acoustic performance than the arc-shaped voice coil 22.
  • the annular side wall 2121b is provided with a plurality of grooves 2121c to reduce the mass of the support connection portion 2121 under the premise of ensuring good support for the arc-shaped vibration plate 212, thereby reducing the weight of the arc-shaped vibration plate 212 overall quality.
  • the groove 2121c is disposed on the side of the annular side wall 2121b. Please refer to FIG. 1 and FIG. 2 in combination.
  • the groove 2121c can be a blind hole, as shown in FIG. 1, or a through hole, as shown in FIG. 2.
  • the grooves 2121c all extend from the side surface to the plane mounting surface 2121a.
  • the grooves 2121c may also be provided in the middle of the annular side wall 2121b, or may not be provided
  • the groove 2121c is not limited here.
  • a loudspeaker 100 is also proposed.
  • the loudspeaker 100 includes a magnetic circuit system 1 and a vibration system 2, wherein the magnetic circuit system 1 is a conventional structure, including a magnetic conductive yoke 13 with a flat bottom wall and The central magnetic circuit portion 11 provided on the magnetic yoke 13 and the side magnetic circuit portion 12 arranged around the central magnetic circuit portion 11 form a magnetic gap 1a between the central magnetic circuit portion 11 and the side magnetic circuit portion 12.
  • the central magnetic circuit portion 11 and the side magnetic circuit part 12 are both conventional flat structures; the vibration system 2 includes the above-mentioned diaphragm unit 21, and the voice coil 22 is of a conventional style, which is fixed on the plane mounting surface 2121a of the arc-shaped vibration plate 212 and is inserted into the magnetic diaphragm. In the magnetic gap 1a of the circuit system 1.
  • the speaker 100 makes full use of the space of the arc-shaped housing part of the electronic device, without increasing the volume and shape of the electronic device and without changing the space occupied by the speaker 100, so that the vibration space of the voice coil 22 is larger and the vibration amplitude of the diaphragm is larger. larger, thereby improving the acoustic performance of the loudspeaker 100; by arranging the support connection part 2121 integrally formed with the arc-shaped vibration plate 212 of the diaphragm unit 21, the assembly process of the material is simplified, saving manpower and material resources; The setting of the mounting surface 2121a enables the arc-shaped diaphragm unit 21 to be used in conjunction with the conventional-style voice coil 22 and the conventional-style magnetic circuit system 1. Compared with the arc-shaped voice coil 22 and the arc-shaped magnetic circuit system 1, the conventional style The voice coil 22 and the conventional magnetic circuit system 1 have simpler processing technology, more mature manufacturing technology and lower cost, and can achieve better acoustic performance.
  • the speaker 100 further includes a housing 3, and the housing 3 includes two parts, an upper housing 31 and a lower housing 32, which together form a receiving space, and the magnetic circuit system 1 and the vibration system 2 are arranged in the receiving space, thereby The magnetic circuit system 1 and the vibration system 2 are protected, and the service life of the speaker 100 is prolonged.
  • the loudspeaker 100 may not be provided with the casing 3 or the metal casing 3 may be provided, so as to improve the heat dissipation of the loudspeaker 100 , thereby improving the acoustic performance of the loudspeaker 100 .
  • the arc-shaped diaphragm 211, the arc-shaped vibration plate 212 and the upper shell 31 are integrally formed, and are made by integral molding, which realizes seamless integration, greatly improves the waterproof ability, and satisfies the requirements of high-grade waterproofing. At the same time, it simplifies the assembly process of materials and saves manpower and material resources.
  • the arc-shaped diaphragm 211 is integrally formed with the arc-shaped vibration plate 212 and the upper shell 31 by hot pressing or injection molding.
  • the arc-shaped vibrating membrane 211, the arc-shaped vibrating plate 212 and the upper shell 31 can also be processed in other ways according to the materials, which is not limited.
  • the arc-shaped vibrating membrane 211, the arc-shaped vibrating plate 212 and the upper shell 31 are also provided with a waterproof rubber ring 212d integrally formed therewith, which further enhances the waterproof effect.
  • the material of the waterproof rubber ring 212d is silica gel, and soft rubber or hard rubber can be selected according to waterproof requirements and product structure, which is not limited.
  • the upper shell 31 is provided with positioning protrusions 31a
  • the lower shell 32 is provided with positioning grooves 32a corresponding to the positioning protrusions 31a, which facilitates assembly and improves positioning accuracy.
  • the two side magnetic circuit portions 12 are respectively disposed at the two long sides of the magnetic conductive yoke 13 and on both sides of the central magnetic circuit portion 11 , wherein the central magnetic circuit portion 11 includes the central magnet 111 And the center magnetic conductive plate 112 disposed on the upper surface of the center magnet 111 , the side magnetic circuit part 12 includes the side magnet 121 and the side magnetic conductive plate 122 disposed on the upper surface of the side magnet 121 .
  • the number of the side magnetic circuit parts 12 can also be four, or the side magnetic circuit parts 12 are not provided, and the magnetic conductive yoke 13 is directly bent in the direction of the vibration system 2 as the side magnetic circuit Section 12, without limitation.
  • the side magnetic conducting plate 122 has an integrally formed structure, including two main body parts 1221 covering the side magnets 121 and two connecting rings 1222 connecting the main body parts 1221 , which simplifies the processing and assembling processes by means of integral molding. , saving manpower and material resources.
  • one end of the connecting ring 1222 away from the main body portion 1221 extends to the magnetic conductive yoke 13 in the direction away from the vibration system 2 and then extends to the edge of the magnetic conductive yoke 13 in the direction away from the main body portion 1221 .
  • Both ends of the magnetic circuit system 1 are lower than the middle section to avoid the curved part of the arc-shaped diaphragm unit 21 , providing sufficient vibration space and ensuring the acoustic performance of the speaker 100 .
  • the diaphragm unit 21 and the loudspeaker 100 in the technical solution of the present invention are provided on the arc-shaped vibration plate 212 of the diaphragm unit 21 with the supporting connecting portion 2121 integrally formed therewith, so as to make full use of the electronic equipment.
  • the space of the arc-shaped housing part increases the vibration space of the voice coil 22 and the vibration amplitude of the diaphragm, effectively increases the rigidity of the arc-shaped vibration plate 212, reduces the high-frequency resonance of the arc-shaped vibration plate 212, and improves the height of the speaker 100.
  • the frequency characteristics of the loudspeaker 100 are expanded, and the frequency bandwidth of the speaker 100 is expanded; in addition, the assembly process of the material is simplified by the integrated molding process, which saves manpower and material resources; and through the setting of the plane mounting surface 2121a, the arc-shaped diaphragm unit 21 can be the same as the conventional one.
  • the voice coil 22 of the style is used in conjunction with the magnetic circuit system 1 of the conventional style. Compared with the voice coil 22 of the arc shape and the magnetic circuit system 1 of the arc shape, the voice coil 22 of the conventional style and the magnetic circuit system 1 of the conventional style have a simpler processing technology. The manufacturing process is more mature, the cost is lower, and better acoustic performance can be achieved.

Abstract

一种振膜单元，其中，振膜单元包括弧形振动板和环绕所述弧形振动板设置的弧形振膜，所述弧形振动板和所述弧形振膜朝远离磁路系统的方向凸出，所述弧形振动板面向所述磁路系统的一侧设有与之一体成型的支撑连接部，所述支撑连接部面向所述磁路系统的一面为平整的平面安装面。

Description

振膜单元和扬声器 技术领域
本实用新型涉及声能转换技术领域，特别涉及一种振膜单元和扬声器。
背景技术
随着社会经济发展与消费升级，消费者对电子设备的便携性与美观性的要求越来越高，用于扬声器的空间十分有限，但对于动圈式扬声器而言，尺寸大小与其声学性能直接相关，尺寸越大声学效果相对越好，因此需要最大限度的利用电子设备中的空间。而常规扬声器的外观多为平整结构，无法充分利用贴近电子设备弧形外壳的部分区域，采用弧形振膜时弧形振动板的刚度欠佳，影响声学性能。
实用新型内容
本实用新型的目的在于至少解决现有技术中存在的技术问题之一，提供一种振膜单元和扬声器。
根据本实用新型实施例的振膜单元，所述振膜单元包括弧形振动板和环绕所述弧形振动板设置的弧形振膜，所述弧形振动板和所述弧形振膜朝远离磁路系统的方向凸出，
所述弧形振动板面向所述磁路系统的一侧设有与之一体成型的支撑连接部，所述支撑连接部面向所述磁路系统的一面为平整的平面连接面。
根据本实用新型的一些实施例，所述弧形振动板与支撑连接部通过注塑方式加工成型。
在本实用新型的一些实施例中，所述弧形振动板与支撑连接部的材料为PEI、LCP或PET。
根据本实用新型的一些实施例，所述支撑连接部包括与所述音圈的形状相适配的环形侧壁，所述环形侧壁的顶面为弧形顶面，所述弧形顶面与所述弧形振动板的凸起方向相同并安装于所述弧形振动板的底部；
所述环形侧壁的底面形成所述平面安装面。
在本实用新型的一些实施例中，所述环形侧壁上设有若干个凹槽。
在本实用新型的一些实施例中，所述凹槽设置于所述环形侧壁的侧面，所述凹槽为盲孔或贯穿孔。
根据本实用新型实施例的扬声器，包括磁路系统和振动系统，
所述磁路系统，包括具有平板状底壁的导磁轭和设于所述导磁轭上的中心磁路部分以及环绕所述中心磁路部分设置的边磁路部分，所述中心磁路部分与所述边磁路部分之间形成磁间隙；
所述振动系统，包括如上所述的振膜单元，所述音圈固定于所述弧形振动板的平面安装面并插入所述磁路系统的磁间隙中。
根据本实用新型的一些实施例，所述扬声器还包括外壳，所述外壳包括上壳和下壳，所述弧形振膜、所述弧形振动板以及上壳为一体成型结构。
在本实用新型的一些实施例中，所述弧形振膜通过热压或注塑方式与所述弧形振动板以及所述上壳一体加工成型。
在本实用新型的一些实施例中，所述上壳设有定位凸起，所述下壳设有与所述定位凸起对应的定位槽。
根据本实用新型的一些实施例，两个所述边磁路部分分别设置于所述导磁轭的两长边处并位于所述中心磁路部分的两侧，所述中心磁路部分包括中心磁铁以及设置于所述中心磁铁上表面的中心导磁板，所述边磁路部分包括边磁铁以及设置于所述边磁铁上表面的边导磁板；
所述边导磁板为一体成型结构，包括两个盖设于所述边磁铁的主体部以及两个连接所述主体部的连接环。
在本实用新型的一些实施例中，所述连接环远离所述主体部的一端向远离所述振动系统的方向延伸至所述导磁轭后向远离所述主体部的方向延伸至所述导磁轭的边缘。
通过在振膜单元的弧形振动板上设置与之一体成型的支撑连接部，在充分利用电子设备弧形外壳部分的空间、提升音圈振动空间与振膜振动幅度的同时，有效增加了弧形振动板的刚度，减少了弧形振动板的高频谐振，改善了扬声器的高频特性，拓展了扬声器的频宽；另外通过一体成型的加工方式简化了物料的装配工序，节省了人力物力；并且通过平面安装面的设置，使 弧形的振膜单元可以同常规样式的音圈与常规样式的磁路系统配合使用，相比弧形音圈与弧形磁路系统，常规样式的音圈与常规样式的磁路系统加工工艺较为简单、制造工艺更为成熟、成本更加低廉，并且可以实现更好的声学性能。
附图说明
为了更清楚地说明本实用新型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实用新型的一些实施例，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是本实用新型弧形振动板一实施例的结构示意图；
图2是本实用新型弧形振动板又一实施例的结构示意图；
图3是本实用新型弧形振动板再一实施例的结构示意图；
图4是本实用新型一个实施例扬声器的结构示意图；
图5是本实用新型扬声器中磁路系统的结构爆炸图；
图6是本实用新型扬声器中振动系统的结构爆炸图；
图7是本实用新型扬声器中振膜单元及其部分组件的结构示意图；
图8是本实用新型扬声器中外壳定位结构的结构示意图；
图9是本实用新型扬声器中振膜单元及其部分组件的剖面示意图。
附图标号说明：
标号 名称 标号 名称
100 扬声器 211 弧形振膜
1 磁路系统 212 弧形振动板
1a 磁间隙 212d 防水胶圈
11 中心磁路部分 2121 支撑连接部
111 中心磁铁 2121a 平面安装面
112 中心导磁板 2121b 环形侧壁
12 边磁路部分 2121c 凹槽
121 边磁铁 22 音圈
122 边导磁板 3 外壳
1221 主体部 31 上壳
1222 连接环 31a 定位凸起
13 导磁轭 32 下壳
2 振动系统 32a 定位槽
21 振膜单元    
本实用新型目的的实现、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
下面将结合本实用新型实施例中的附图，对本实用新型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实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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，都属于本实用新型保护的范围。
需要说明，若本实用新型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，若本实用新型实施例中有涉及“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，也不在本实用新型要求的保护范围之内。
根据本实用新型实施例的振膜单元21，请结合参考图1至图9，包括弧形振动板212和环绕弧形振动板212设置的弧形振膜211，弧形振动板212和弧形振膜211朝远离磁路系统1的方向凸出，弧形振动板212面向磁路系统1的一侧设有与之一体成型的支撑连接部2121，支撑连接部2121面向磁路系统 1的一面为平整的平面安装面2121a。
通过在振膜单元21的弧形振动板212上设置与之一体成型的支撑连接部2121，在充分利用电子设备弧形外壳部分的空间、提升音圈22振动空间与振膜振动幅度的同时，有效增加了弧形振动板212的刚度，减少了弧形振动板212的高频谐振，改善了扬声器100的高频特性，拓展了扬声器100的频宽；另外通过一体成型的加工方式简化了物料的装配工序，节省了人力物力；并且通过平面安装面2121a的设置，使弧形的振膜单元21可以同常规样式的音圈22与常规样式的磁路系统1配合使用，相比弧形音圈22与弧形磁路系统1，常规样式的音圈22与常规样式的磁路系统1加工工艺较为简单、制造工艺更为成熟、成本更加低廉，并且可以实现更好的声学性能。
根据本实用新型的一些实施例，弧形振动板212与支撑连接部2121通过注塑方式加工成型，加工方式简单，制作成本较低。在本实用新型的其他实施例中，弧形振动板212与支撑连接部2121也可以根据材料选用其他的加工方式，对此不作限制。
在本实用新型的一些实施例中，弧形振动板212与支撑连接部2121的材料为PEI、LCP或PET，具有刚性较大，支撑和振动性能优良等优点。在本实用新型的其他实施例中，弧形振动板212与支撑连接部2121的材料也可以根据需要选用其他合适的材料，对此不作限制。
根据本实用新型的一些实施例，支撑连接部2121包括与22音圈的形状相适配的环形侧壁2121b，环形侧壁2121b的顶面为弧形顶面，弧形顶面与弧形振动板212的凸起方向相同并安装于弧形振动板212的底部，环形侧壁2121b的底面形成平整的平面安装面2121a，用来固定传统的环形音圈22，不需要再使用弧形音圈22来与弧形振动板212或弧形振膜211配合，降低了加工难度与装配难度，同时传统环形音圈22相比弧形音圈22可以实现更好的声学性能。
在本实用新型的一些实施例中，环形侧壁2121b设有若干个凹槽2121c，在保证对弧形振动板212支撑良好的前提下，减轻支撑连接部2121的质量，进而减轻弧形振动板212整体的质量。
具体地，凹槽2121c设置于环形侧壁2121b的侧面，请结合参考图1与图2，凹槽2121c可以为盲孔，如图1所示，也可以为贯穿孔，如图2所示。在本实用 新型的实施例中，凹槽2121c均由侧面延伸至平面安装面2121a，在本实用新型的其他实施例中，凹槽2121c也可以设置于环形侧壁2121b的中部，也可以不设置凹槽2121c，在此不作限制。
根据本实用新型实施例，还提出了一种扬声器100，该扬声器100包括磁路系统1和振动系统2，其中，磁路系统1为常规结构，包括具有平板状底壁的导磁轭13和设于导磁轭13上的中心磁路部分11以及环绕中心磁路部分11设置的边磁路部分12，中心磁路部分11与边磁路部分12之间形成磁间隙1a，中心磁路部分11和边磁路部分12均为常规的平整结构；振动系统2包括如上所述的振膜单元21，音圈22为常规的样式，固定于弧形振动板212的平面安装面2121a并插入磁路系统1的磁间隙1a中。
这种扬声器100充分利用了电子设备弧形外壳部分的空间，在不增加电子设备体积和形状、不改变扬声器100占用空间的情况下，使得音圈22的振动空间更大、振膜的振动幅度更大，从而提升扬声器100的声学性能；通过在振膜单元21的弧形振动板212上设置与之一体成型的支撑连接部2121，简化了物料的装配工序，节省了人力物力；并且通过平面安装面2121a的设置，使弧形的振膜单元21可以同常规样式的音圈22与常规样式的磁路系统1配合使用，相比弧形音圈22与弧形磁路系统1，常规样式的音圈22与常规样式的磁路系统1加工工艺较为简单、制造工艺更为成熟、成本更加低廉，并且可以实现更好的声学性能。
根据本实用新型的一些实施例，扬声器100还包括外壳3，外壳3包括上壳31和下壳32两部分，共同形成一个收容空间，磁路系统1和振动系统2设置于收容空间中，从而保护磁路系统1和振动系统2，延长扬声器100的使用寿命。在本实用新型的其他实施例中，扬声器100也可以不设置外壳3或者设置金属外壳3，提升扬声器100的散热，进而提升扬声器100的声学性能。
其中，弧形振膜211、弧形振动板212以及上壳31为一体成型结构，采用一体成型的方式制成，实现了无缝结合，极大的提升了防水能力，满足了高等级防水的需求，同时简化了物料的装配工序，节省了人力物力。
在本实用新型的一些实施例中，弧形振膜211通过热压或注塑方式与弧形振动板212以及上壳31一体加工成型，各零件之间结合力大，不易分离失效。在本实用新型的其他实施例中，弧形振膜211、弧形振动板212以及上壳31也 可以根据材料选用其他的加工方式，对此不作限制。
另外，弧形振膜211、弧形振动板212以及上壳31部分还设有与之一体成型的防水胶圈212d，进一步提升防水效果。防水胶圈212d的材料为硅胶，可以根据防水要求和产品结构选用软胶或硬胶，对此不作限制。
在本实用新型的一些实施例中，上壳31设有定位凸起31a，下壳32设有与定位凸起31a对应的定位槽32a，方便装配，并提高定位的精度。
根据本实用新型的一些实施例，两个边磁路部分12分别设置于导磁轭13的两长边处并位于中心磁路部分11的两侧，其中，中心磁路部分11包括中心磁铁111以及设置于中心磁铁111上表面的中心导磁板112，边磁路部分12包括边磁铁121以及设置于边磁铁121上表面的边导磁板122。在本实用新型的其他实施例中，边磁路部分12的数量也也可以为四个，或者不设边磁路部分12，直接由导磁轭13向振动系统2方向弯折作为边磁路部分12，对此不作限制。
具体地，边导磁板122为一体成型结构，包括两个盖设于边磁铁121的主体部1221以及两个连接主体部1221的连接环1222，通过一体成型的方式简化了加工工序和装配工序，节省了人力物力。
在本实用新型的一些实施例中，连接环1222远离主体部1221的一端向远离振动系统2的方向延伸至导磁轭13后向远离主体部1221的方向延伸至导磁轭13的边缘，这样磁路系统1的两端低于中段部分，为弧形的振膜单元21的弯曲部分进行避让，提供了充分的振动空间，保证了扬声器100的声学性能。
与相关技术相比，本实用新型技术方案中的振膜单元21以及扬声器100，通过在振膜单元21的弧形振动板212上设置与之一体成型的支撑连接部2121，在充分利用电子设备弧形外壳部分的空间、提升音圈22振动空间与振膜振动幅度的同时，有效增加了弧形振动板212的刚度，减少了弧形振动板212的高频谐振，改善了扬声器100的高频特性，拓展了扬声器100的频宽；另外通过一体成型的加工方式简化了物料的装配工序，节省了人力物力；并且通过平面安装面2121a的设置，使弧形的振膜单元21可以同常规样式的音圈22与常规样式的磁路系统1配合使用，相比弧形音圈22与弧形磁路系统1，常规样式的音圈22与常规样式的磁路系统1加工工艺较为简单、制造工艺更 为成熟、成本更加低廉，并且可以实现更好的声学性能。
以上仅为本实用新型的优选实施例，并非因此限制本实用新型的专利范围，凡是在本实用新型的实用新型构思下，利用本实用新型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实用新型的专利保护范围内。

Claims (12)

  1. 一种振膜单元，
    其特征在于，
    所述振膜单元包括弧形振动板和环绕所述弧形振动板设置的弧形振膜，所述弧形振动板和所述弧形振膜朝远离磁路系统的方向凸出，
    所述弧形振动板面向所述磁路系统的一侧设有与之一体成型的支撑连接部，所述支撑连接部面向所述磁路系统的一面为平整的平面安装面。
  2. 根据权利要求1所述的扬声器，其特征在于，所述弧形振动板与支撑连接部通过注塑方式加工成型。
  3. 根据权利要求2所述的扬声器，其特征在于，所述弧形振动板与支撑连接部的材料为PEI、LCP或PET。
  4. 根据权利要求1所述的扬声器，其特征在于，所述支撑连接部包括与所述音圈的形状相适配的环形侧壁，所述环形侧壁的顶面为弧形顶面，所述弧形顶面与所述弧形振动板的凸起方向相同并安装于所述弧形振动板的底部；
    所述环形侧壁的底面形成所述平面安装面。
  5. 根据权利要求4所述的扬声器，其特征在于，所述环形侧壁上设有若干个凹槽。
  6. 根据权利要求5所述的扬声器，其特征在于，所述凹槽设置于所述环形侧壁的侧面，所述凹槽为盲孔或贯穿孔。
  7. 一种扬声器，包括磁路系统和振动系统，
    所述磁路系统，包括具有平板状底壁的导磁轭和设于所述导磁轭上的中心磁路部分以及环绕所述中心磁路部分设置的边磁路部分，所述中心磁路部 分与所述边磁路部分之间形成磁间隙；
    其特征在于，
    所述振动系统，包括如权利要求1-6任意一项所述的振膜单元，所述音圈固定于所述弧形振动板的平面安装面并插入所述磁路系统的磁间隙中。
  8. 根据权利要求7所述的扬声器，其特征在于，所述扬声器还包括外壳，所述外壳包括上壳和下壳，所述弧形振膜、所述弧形振动板以及上壳为一体成型结构。
  9. 根据权利要求8所述的扬声器，其特征在于，所述弧形振膜通过热压或注塑方式与所述弧形振动板以及所述上壳一体加工成型。
  10. 根据权利要求8所述的扬声器，其特征在于，所述上壳设有定位凸起，所述下壳设有与所述定位凸起对应的定位槽。
  11. 根据权利要求7所述的扬声器，其特征在于，两个所述边磁路部分分别设置于所述导磁轭的两长边处并位于所述中心磁路部分的两侧，所述中心磁路部分包括中心磁铁以及设置于所述中心磁铁上表面的中心导磁板，所述边磁路部分包括边磁铁以及设置于所述边磁铁上表面的边导磁板；
    所述边导磁板为一体成型结构，包括两个盖设于所述边磁铁的主体部以及两个连接所述主体部的连接环。
  12. 根据权利要求11所述的扬声器，其特征在于，所述连接环远离所述主体部的一端向远离所述振动系统的方向延伸至所述导磁轭后向远离所述主体部的方向延伸至所述导磁轭的边缘。
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CN110268724A (zh) * 2017-03-26 2019-09-20 日商乐声股份有限公司 扬声器
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CN214070145U (zh) * 2020-11-30 2021-08-27 歌尔股份有限公司 振膜单元和扬声器

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