WO2019205721A1 - 一种发声装置及电子设备 - Google Patents

一种发声装置及电子设备 Download PDF

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Publication number
WO2019205721A1
WO2019205721A1 PCT/CN2018/125638 CN2018125638W WO2019205721A1 WO 2019205721 A1 WO2019205721 A1 WO 2019205721A1 CN 2018125638 W CN2018125638 W CN 2018125638W WO 2019205721 A1 WO2019205721 A1 WO 2019205721A1
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WO
WIPO (PCT)
Prior art keywords
rear cavity
antenna
mounting portion
magnetic circuit
side wall
Prior art date
Application number
PCT/CN2018/125638
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English (en)
French (fr)
Inventor
朱婷
张成飞
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歌尔股份有限公司
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Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2019205721A1 publication Critical patent/WO2019205721A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention relates to the technical field of sounding devices.
  • the embodiment of the invention provides a sounding device and an electronic device integrated with an antenna, which can not only reduce the volume of the sounding device while ensuring the acoustic performance, but also integrate the antenna on the small volume sounding device to improve the integration degree.
  • An embodiment of the present invention provides an audio device integrated with an antenna, including: a vibration system, a magnetic circuit system, a housing, and an antenna;
  • the housing includes a mounting portion having at least one end open and a corresponding portion disposed in the mounting portion a rear cavity portion outside the side wall and for forming a rear cavity;
  • the magnetic circuit system and the vibration system are fixed in the mounting portion;
  • the first side wall is open to the position of the rear cavity a magnetic gap in the magnetic circuit system and a rear sound hole of the rear cavity;
  • the antenna is disposed on the rear cavity portion.
  • the mounting portion is a two-end opening structure; the magnetic circuit system is fixed at a first end opening of the mounting portion, and the first end opening is a magnetic yoke in the magnetic circuit system Sealing; the vibration system is fixed to the second end opening of the mounting portion, and the second end opening is combined with a front cover located outside the vibration system.
  • the rear cavity portion includes a back cover and a main body structure integrally extending outward from the first side wall of the mounting portion, the main body structure including a bottom wall and a second side wall; the bottom wall The second side wall and the first side wall are integrally formed to form an open cavity; the open cavity is sealed by the back cover to form the rear cavity.
  • a feeding point of the two ends of the antenna is located on an outer side of the second sidewall; a body portion of the antenna connected to the feeding points of the two ends is disposed at the bottom wall away from the rear On the end face of the cavity.
  • an end surface of the back cover away from the rear cavity is flush with an end surface of the yoke away from the vibration system; and/or an end surface of the bottom wall away from the rear cavity is The front cover is flush with the end face of the vibration system.
  • the rear cavity portion includes a back cover and a separately formed drag shell structure;
  • the drag shell structure forms an open cavity with one end open; and the open end cover of the drag shell structure is provided with the back cover,
  • the rear cover seals the open cavity to form the rear cavity;
  • the drag case structure is fixed to the outer side of the first side wall by adhesive bonding; the first and second sides of the drag case structure A through hole communicating with the rear sound hole is opened at a joint of the side wall.
  • the mounting portion has a rectangular structure; the rear cavity is disposed along a long side and/or a short side of the rectangular structure.
  • the rear cavity is filled with a sound absorbing material
  • the back cover is provided with a through hole, and the sound absorbing material is filled into the rear cavity from the through hole.
  • the rear sound hole is covered with a first gas permeable partition for resisting passage of the sound absorbing material; the through hole is further covered with a second gas permeable partition, the second gas permeable partition The sound absorbing material is isolated from the external environment.
  • the antenna comprises a laser direct formed antenna, a flexible printed circuit board antenna or a metal antenna.
  • the magnetic circuit system includes a central magnet and a side magnet; a first sidewall of the mounting portion is provided with a notch adapted to the side magnet; the side magnet is disposed in the notch, and The notch is sealed by the side magnet; the outer side of the side magnet is flush with the outer side of the first side wall.
  • an edge magnetic plate of the magnetic circuit system is injection molded into the mounting portion.
  • the embodiment of the invention further provides an electronic device comprising a main board and the sound generating device according to any one of the preceding claims; wherein the antenna is electrically connected to the main board.
  • the electronic device further includes: a casing and a display screen; the number of the sounding devices is two; two of the sounding devices are disposed inside the casing, and respectively corresponding to the upper portion of the display screen and Below position.
  • the rear cavity is formed by the rear cavity portion located outside the first side wall of the mounting portion, and the module outer casing structure of the sounding device is omitted compared with the prior art, and in particular, the product may be omitted.
  • the space occupied by the Z direction on the other hand, the rear cavity provided on the side does not occupy too much lateral space, thus contributing to miniaturization of the product; on the basis of miniaturization, a magnetic circuit system for realizing vibration and sound generation And the volume and product structure of the vibration system itself are not affected, and the volume of the magnetic circuit system and the distance between the magnetic circuit system and the vibration system can be balanced, thereby ensuring acoustic performance.
  • the acoustic device of such a structure When the acoustic device of such a structure is assembled to the end product, for example, when the upper and lower ends of the terminal are respectively assembled, a better stereo effect can be obtained. In addition, integration can be improved by integrating a small-volume sounding device with an antenna.
  • FIG. 1 is a first perspective structural view of a sound emitting device according to an embodiment of the present invention.
  • Figure 2 is a second perspective view of a portion of the Figure 1 taken along the cutting line I-H;
  • FIG. 3 is a schematic structural view of a third perspective view of a sound emitting device according to an embodiment of the present invention.
  • Figure 4 is a fourth perspective view of a portion of the portion of Figure 1 taken along the cutting line I-H;
  • FIG. 5 is a schematic structural diagram of a fifth perspective view of a sound emitting device according to an embodiment of the present invention.
  • FIG. 6 is an exploded view of a sound emitting device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural view of a housing according to an embodiment of the present invention.
  • Figure 8 is a side view of a sound emitting device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a sixth perspective view of an electronic device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a seventh perspective view of an electronic device according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a first perspective structure of an antenna located on a rear cavity portion according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a second perspective structure of an antenna located on a rear cavity portion according to an embodiment of the invention.
  • the sounding device includes: a vibration system 21, a magnetic circuit system 22, a housing 1 and an antenna 5; the housing 1 includes a mounting portion 11 having at least one end open and correspondingly disposed in the mounting
  • the first side wall 111 of the portion 11 is outside and is used to form the rear cavity portion 12 of the rear cavity 120; the magnetic circuit system 22 and the vibration system 21 are fixed in the mounting portion 11; the first side wall 111 A rear acoustic hole 112 communicating with the magnetic gap in the magnetic circuit system 22 and the rear cavity 120 is disposed at a position of the rear cavity 120; the antenna 5 is disposed on the rear cavity portion.
  • the rear cavity is formed by the rear cavity portion located outside the first side wall of the mounting portion, and the module outer casing structure of the sounding device is omitted compared with the prior art, and in particular, the product may be omitted.
  • the space occupied by the Z direction on the other hand, the rear cavity provided on the side does not occupy too much lateral space, thus contributing to miniaturization of the product; on the basis of miniaturization, a magnetic circuit system for realizing vibration and sound generation And the volume and product structure of the vibration system itself are not affected, and the volume of the magnetic circuit system and the distance between the magnetic circuit system and the vibration system can be balanced, thereby ensuring acoustic performance.
  • the acoustic device of such a structure When the acoustic device of such a structure is assembled to the end product, for example, when the upper and lower ends of the terminal are respectively assembled, a better stereo effect can be obtained. In addition, integration can be improved by integrating a small-volume sounding device with an antenna.
  • the above-described mounting portion 11 can be configured to have one end opening or both end opening structures depending on the actual situation.
  • the one end opening structure when the closed end is the end corresponding to the vibration system, the sound hole is allowed to be opened on the closed end; after the vibration system and the magnetic circuit system are sequentially assembled from the open end, the open end is performed by the magnetic circuit system itself. Close or open the closed end with a sealing cap.
  • the antenna 5 can be disposed on the rear cavity portion.
  • the antenna may be disposed on the outer surface of the sounding device, for example, on the outer surface of the rear cavity portion.
  • the antenna 5 includes, but is not limited to, a Laser Direct-Directed (LDS) antenna, a Flexible Printed Circuit Board (FPCB) antenna, or a metal antenna.
  • LDS Laser Direct-Directed
  • FPCB Flexible Printed Circuit Board
  • the antenna 5 is an LDS antenna
  • the antenna pattern can be activated by the outer surface of the laser sounding device, and then the LDS antenna can be formed by vapor deposition.
  • the antenna 5 is an FPCB antenna or a metal antenna
  • the antenna can be attached by means of a paste. 5 is fixed to the outer surface of the sounding device.
  • the shape of the antenna 5 can be designed according to actual needs, which is not specifically limited in the present invention.
  • the rear cavity portion 12 is located on the outer side surface of the first side wall 111 of the mounting portion 11. It should be noted that the inner side surface of the first side wall 111 of the mounting portion 11 faces the vibration system 21 and the magnetic circuit system 22; the outer side surface of the first side wall 111 of the mounting portion 11 faces away from the vibration system 21 and the magnetic circuit system 22.
  • the vibration system 21 includes a diaphragm 211, an electrical connector 212, and a voice coil 213; the voice coil 213 is fixed to one side of the diaphragm 211 and suspended in the magnetic circuit system.
  • the electrical connector 212 is placed in contact with the voice coil 213, and the diaphragm 211 is fixed to the mounting portion 11.
  • the electrical connector 212 is connected to an external circuit to energize the voice coil 213, and the electrical connector 212 includes, but is not limited to, a flexible circuit board FPCB.
  • the vibration system 21 may further include a reinforcing portion 214 which is attached to a side of the diaphragm 211 away from the voice coil.
  • the magnetic circuit system 22 can be a single magnetic circuit system, a three magnetic circuit system, or a five magnetic circuit system, which is not specifically limited in this embodiment.
  • the magnetic circuit system 22 includes: a magnetic yoke 221, a central magnet 222, and a side magnet 223; the central magnet 222 is fixed to the magnetic yoke 221, and the side magnet 223 is fixed to the magnetic yoke 221, and Located on the circumferential side of the center magnet 222. A magnetic gap is formed between the center magnet 222 and the side magnet 223.
  • the magnetic circuit system 22 can include an edge magnetic plate 224 and/or a central magnetic plate 225.
  • the side magnetic conductive plate 224 may be a separate member that is fixed to the side of the side magnet 223 away from the yoke 221 by sticking; or, as shown in FIG. 7, the side magnetic conductive plate 224 is injection molded in the mounting portion.
  • the side magnetic conductive plate 224 is disposed in contact with the side of the side magnet away from the yoke 221 (as shown in FIG. 2). Injection molding the side magnetic conductive plate 224 into the mounting portion not only reduces the volume of the sounding device, but also further fixes the magnetic circuit system to improve the stability of the sounding device.
  • the mounting portion 11 is a two-end opening structure; the magnetic circuit system 22 is fixed to the first end opening of the mounting portion 11, and the first end opening is The yoke 221 in the magnetic circuit system 22 is sealed; the vibration system 21 is fixed to the second end opening of the mounting portion 11, and the second end opening is coupled to the outside of the vibration system 21 Front cover 31.
  • the front cover is used to protect the diaphragm in the vibration system from damage.
  • the first port is sealed by the yoke 221, which avoids the use of the sealing plate, which not only reduces the cost but also further reduces the volume.
  • the yoke 221 has a shape that is adapted to the first end opening.
  • the sound hole 310 is opened in the front cover 31.
  • the front cover 31 may be coupled to the second end opening by ultrasonic welding, pasting or screwing.
  • the rear cavity portion 12 includes a rear cover 123 and a main body structure integrally extending outward from the first side wall 111 of the mounting portion 11, the main structure including a bottom wall 121 and a second side wall 122; the bottom wall 121, the second side wall 122 and the first side wall 111 are integrally formed to form an open cavity; the open cavity is rearward A cover 123 seals to form the rear cavity 120.
  • the rear cavity 120 is located outside the first side wall 111.
  • the antenna 5 may be disposed on the outer side surface of the rear cavity portion 12 and/or the outer side surface of the rear cover 123.
  • the back cover 123 can be made of plastic or metal.
  • the back cover 123 is made of a metal material, in order to avoid a short circuit of the LDS antenna, only the LDS antenna can be disposed on the outer side surface of the main body structure.
  • 11 shows that the FPCB antenna or the metal antenna is attached to the main structure of the rear chamber portion 12 and the outer side surface of the rear cover 123; and FIG. 5 shows that the LDS antenna is disposed on the rear chamber portion 12.
  • the two feeding points 51 of the antenna 5 are located on the outer side of the second side wall 122; the antenna 5 and the two ends are fed A body portion 52 connected to the point 51 is disposed on an end surface of the bottom wall 121 away from the rear cavity 120.
  • the bottom wall 121 and the second side wall 122 are integrally formed to ensure that the antennas are located on the same housing to ensure antenna performance.
  • the feeding points of the two ends of the antenna 5 are in contact with the elastic pieces electrically connected to the main board in the electronic device to control the working state of the antenna 5 by the main board.
  • the rear cavity portion 12 includes a rear cover 123 and a separately formed drag shell structure; the drag shell structure forms an open cavity with one end open; and the open end cover of the drag shell structure
  • the rear cover 123 seals the open cavity to form the rear cavity 120; the drag structure is fixed to the outer side of the first sidewall 111 by adhesive bonding.
  • a through hole communicating with the rear sound hole 112 is opened at a joint of the drag shell structure with the first side wall 11.
  • the integrally formed main body structure can save space occupied by the colloid compared with the separately formed drag shell structure.
  • the integral molding is adopted, only the single housing is extended, the structure is simple, and the assembly between the sounding monomer and the external drag shell structure is not required, the manufacturing process and the installation process can be simplified, and the production efficiency is provided.
  • the open end of the open cavity and the first end opening of the mounting portion may be disposed on the same side of the sounding device, and disposed flush, specifically
  • the end surface of the rear cover 123 away from the rear cavity 120 is flush with the end surface of the yoke 221 away from the vibration system 21; or the bottom wall 121 is away from the end surface of the rear cavity 120
  • the front cover 31 is disposed flush with the end surface of the vibration system 21.
  • an end surface of the back cover 123 away from the rear cavity 120 is flush with an end surface of the yoke 221 away from the vibration system 21, and the bottom wall 121 is away from the rear cavity.
  • An end surface of the 120 is flush with the end surface of the front cover 31 away from the vibration system 21.
  • the mounting portion 11 has a rectangular structure; the rear cavity 120 is disposed along the long side and/or the short side of the rectangular structure.
  • the rear cavity 120 may be disposed on one side, a plurality of sides or a circumference of the rectangular structure, which is not specifically limited in the present invention. Those skilled in the art can make reasonable settings according to the requirements and the internal structure of the external electronic products.
  • the rear chamber 120 can be a communicating cavity with a regular shape, which is advantageous for improving acoustic performance.
  • Figure 2 shows that the rear cavity 120 is disposed along the long sides of the rectangular structure.
  • the mounting portion can adopt the above rectangular structure.
  • the core composed of the magnetic circuit system and the vibration system is racetrack-shaped or circular
  • the mounting portion An elliptical structure or a circular structure may be employed.
  • the sound absorbing material can also be filled in the rear cavity 120 for the purpose of expansion.
  • the sound absorbing material includes, but is not limited to, sound absorbing particles and sound absorbing cotton.
  • the sound absorbing material may be filled into the rear cavity before the back cavity is sealed by the back cover, or as shown in FIG. 2 and FIG. 6, a through hole 1230 is formed in the back cover, and the sound absorbing material is penetrated from the through hole. A hole 1230 is filled into the rear chamber 120.
  • the rear sound hole 112 is covered with a first gas permeable mesh 40 for resisting the passage of the sound absorbing material.
  • the through hole 1230 is further covered with a second gas permeable spacer 1231 which isolates the sound absorbing material from the external environment.
  • the first gas permeable spacer 40 and the second gas permeable spacer 1231 include, but are not limited to, a mesh, a corrosion resistant metal mesh. Covering the second gas permeable partition 1231 at the through hole 1230 not only prevents leakage of the sound absorbing material, but also balances internal and external pressure through the air holes on the second gas permeable partition 1231 to improve acoustic performance.
  • the sound absorbing particles may be zeolite particles comprising a plurality of zeolite particles, each of which may have a silicon to aluminum molar ratio of >200, or ⁇ 200, or Alumina-free zeolite particles.
  • a notch may be provided on the first side wall 111 of the mounting portion 11 at a position corresponding to the side magnet, the side magnet is received in the notch, and the notch is sealed by the edge magnet. This is equivalent to saving the horizontal size occupied by the first side wall. Specifically, as shown in FIG. 2, FIG. 3 and FIG.
  • the magnetic circuit system 22 includes a central magnet 222 and a side magnet 223; the first side wall 111 of the mounting portion 11 is provided with a notch 1110 adapted to the side magnet 223;
  • the side magnet 223 is disposed in the notch 1110, and the notch 1110 is sealed by the side magnet 223; the outer side of the side magnet 223 is flush with the outer side of the first side wall 111.
  • the side surface of the side magnet 223 away from the center magnet 222 is its outer side surface.
  • the electronic device includes a main board and the sound emitting device in any of the above embodiments; the antenna 5 is electrically connected to the main board. Specifically, the feed points 51 of the two ends of the antenna 5 are disposed in contact with the elastic pieces electrically connected to the main board.
  • the sounding device includes: a vibration system 21, a magnetic circuit system 22, a housing 1 and an antenna 5;
  • the housing 1 includes a mounting portion 11 having at least one end open and correspondingly disposed at
  • the first side wall 111 of the mounting portion 11 is outside and used to form the rear cavity portion 12 of the rear cavity 120; the magnetic circuit system 22 and the vibration system 21 are fixed in the mounting portion 11;
  • the sidewall 111 is provided with a rear acoustic hole 112 communicating with the magnetic gap in the magnetic circuit system 22 and the rear cavity 120 at a position facing the rear cavity 120;
  • the antenna 5 is disposed on the sounding device.
  • the above electronic products include, but are not limited to, mobile phones, palmtop computers and the like.
  • the housing and the display screen; the number of the sounding devices are two; the two sounding devices are disposed inside the outer casing, and respectively corresponding to the upper and lower positions of the display screen.
  • the first sound outlet 7 is disposed above the display screen on the outer casing, and the second sound output port 8 is disposed below the display screen.
  • the sounding device described above is disposed at the position of the first sound outlet 7 and the second sound outlet 8 in the interior of the casing, respectively.
  • Simultaneous sounding of two sounding devices at different locations in the electronic product can achieve good stereo effects.

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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  • Telephone Set Structure (AREA)

Abstract

本发明实施例提供了一种发声装置及电子设备。该发声装置，包括振动系统、磁路系统、壳体和天线；所述壳体包括至少一端开口的安装部以及对应设置在所述安装部的第一侧壁外侧且用于形成后腔的后腔部；所述磁路系统和所述振动系统固定于所述安装部内；所述第一侧壁正对所述后腔的位置处开设有连通所述磁路系统中磁间隙与所述后腔的后声孔；所述天线设置在所述发声装置上。本发明实施例在保证声学性能的同时不仅能减小发声装置的体积，还能在小体积发声装置上集成天线以提高集成度。

Description

一种发声装置及电子设备 技术领域
本发明涉及发声装置技术领域。
背景技术
随着消费类电子产品的发展，消费类电子产品的小型化设计越来越受到关注。发声装置作为电子产品中的组成构件，其集成化设计的要求越来越高。发声装置与天线集成设计成为技术发展的趋势。
现有技术中，为了提升终端产品的声学性能，经常需要采用上下端装配两个声学元器件，具体主要有三种做法：其一是上端装配一个Receiver，下端装配一个SPK模组，这种方式存在音量偏小的缺陷；其二是上下端同时装配一个SPK模组，这种方式相比第一种而言出声效果要好一些，但密封后腔会占用较大的空间，不利于产品的小型化；其三是下端装配一个SPK模组，上端装配一个具有开放式后腔的SPK，这种结构在音量以及占用空间方面相比前两种方式都有所改善，但手机后壳的振动会比较严重。
在上述集中情形下，受限于发声装置的体积，其与天线的集成度较低，难以适配集成度要求较高的电子产品，并且其很难兼顾小型化与优良的声学性能两方面的需求。
发明内容
本发明实施例提供了一种集成有天线的发声装置及电子设备，在保证声学性能的同时不仅能减小发声装置的体积，还能在小体积发声装置上集成天线以提高集成度。
本发明实施例提供了一种集成有天线的发声装置，包括：振动系统、磁路系统、壳体和天线；所述壳体包括至少一端开口的安装部以及对应设置在 所述安装部的第一侧壁外侧且用于形成后腔的后腔部；所述磁路系统和所述振动系统固定于所述安装部内；所述第一侧壁正对所述后腔的位置处开设有连通所述磁路系统中磁间隙与所述后腔的后声孔；所述天线设置在所述后腔部上。
可选地，所述安装部为两端开口结构；所述磁路系统固定于所述安装部的第一端开口处，且所述第一端开口由所述磁路系统中的导磁轭密封；所述振动系统固定于所述安装部的第二端开口处，且所述第二端开口处结合有位于所述振动系统外侧的前盖。
可选地，所述后腔部包括后盖和自所述安装部的第一侧壁向外一体延伸而成的主体结构，所述主体结构包括底壁和第二侧壁；所述底壁、所述第二侧壁以及所述第一侧壁一体成型，共同围成开放式腔体；所述开放式腔体由所述后盖密封形成所述后腔。
可选地，所述天线的两端馈电点位于所述第二侧壁的外侧面上；所述天线与所述两端馈电点相连的主体部分设置在所述底壁远离所述后腔的端面上。
可选地，所述后盖远离所述后腔的端面与所述导磁轭远离所述振动系统的端面齐平设置；和/或，所述底壁远离所述后腔的端面与所述前盖远离所述振动系统的端面齐平设置。
可选地，所述后腔部包括后盖以及单独成型的拖壳结构；所述拖壳结构形成一端开口的开放式腔体；所述拖壳结构的开口端盖设有所述后盖，所述后盖密封所述开放式腔体，以形成所述后腔；所述拖壳结构通过涂胶粘贴固定于所述第一侧壁外侧；所述拖壳结构的与所述第一侧壁的连接处开设有与所述后声孔连通的通孔。
可选地，所述安装部呈矩形结构；所述后腔沿着所述矩形结构的长边侧和/或短边侧设置。
可选地，所述后腔内填满吸音材料；所述后盖上开设有贯通孔，所述吸音材料自所述贯通孔处灌装进所述后腔内。
可选地，在所述后声孔处覆盖有第一透气隔离件，用于抵挡所述吸音材料穿过；所述贯通孔处还覆盖有第二透气隔离件，所述第二透气隔离件将所述吸音材料与外部环境隔离。
可选地，所述天线包括激光直接成型天线、柔性印刷电路板天线或金属天线。
可选地，所述磁路系统包括中心磁铁和边磁铁；所述安装部的第一侧壁上设置有与所述边磁铁适配的缺口；所述边磁铁安置在所述缺口内，并由所述边磁铁对所述缺口进行密封；所述边磁铁的外侧面与所述第一侧壁的外侧面齐平设置。
可选地，所述磁路系统的边导磁板注塑在所述安装部内。
本发明实施例还提供了一种电子设备，包括主板及上述任一项所述的发声装置；所述天线与所述主板电连接。
可选地，上述电子设备还包括：外壳和显示屏；所述发声装置的数量为两个；两个所述发声装置均设置在所述外壳内部，且分别对应位于所述显示屏的上方和下方位置。
本发明实施例提供的技术方案中，通过位于安装部的第一侧壁外侧的后腔部来形成后腔，相比于现有技术省略了发声装置的模组外壳结构，尤其可以省略产品在Z向所占据的空间，而另一方面，设置于侧面的后腔不会过多的占用横向空间，因此有助于实现产品的小型化；在小型化基础上，实现振动发声的磁路系统和振动系统本身的体积及产品结构等均不受影响，能够兼顾磁路系统的体积以及磁路系统与振动系统之间的间距，进而保证声学性能。当这种结构的声学装置装配于终端产品时，例如在终端的上下端分别对应装配时，能够获得较佳的立体声效果。此外，通过将小体积的发声装置与天线进行集成，可提高集成度。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本发明的实施例，并且连同说明书一起用于解释本发明的原理。
图1是本发明一实施例提供的发声装置的第一视角结构示意图；
图2是图1中沿切割线I-H切割后其中一部分的第二视角结构示意图；
图3是本发明一实施例提供的发声装置的第三视角结构示意图；
图4是图1中沿切割线I-H切割后其中一部分的第四视角结构示意图；
图5是本发明一实施例提供的发声装置的第五视角结构示意图；
图6是本发明一实施例提供的发声装置的爆炸图；
图7是本发明一实施例提供的壳体的结构示意图；
图8是本发明一实施例提供的发声装置的侧视图；
图9是本发明一实施例提供的电子设备的第六视角结构示意图；
图10是本发明一实施例提供的电子设备的第七视角结构示意图；
图11是本发明一实施例提供的天线位于后腔部上的第一视角结构示意图；
图12是本发明一实施例提供的天线位于后腔部上的第二视角结构示意图。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术和设备可能不作详细讨论，但在适当情况下，所述技术和设备应当被视为说明书的一部分。在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
图1和图2示出了本发明一实施例提供的一种用于发声装置的结构示 意图。如图1和图2所示，该发声装置包括：振动系统21、磁路系统22、壳体1和天线5；所述壳体1包括至少一端开口的安装部11以及对应设置在所述安装部11的第一侧壁111外侧且用于形成后腔120的后腔部12；所述磁路系统22和所述振动系统21固定于所述安装部11内；所述第一侧壁111正对所述后腔120的位置处开设有连通所述磁路系统22中磁间隙与所述后腔120的后声孔112；所述天线5设置在所述后腔部上。
本发明实施例提供的技术方案中，通过位于安装部的第一侧壁外侧的后腔部来形成后腔，相比于现有技术省略了发声装置的模组外壳结构，尤其可以省略产品在Z向所占据的空间，而另一方面，设置于侧面的后腔不会过多的占用横向空间，因此有助于实现产品的小型化；在小型化基础上，实现振动发声的磁路系统和振动系统本身的体积及产品结构等均不受影响，能够兼顾磁路系统的体积以及磁路系统与振动系统之间的间距，进而保证声学性能。当这种结构的声学装置装配于终端产品时，例如在终端的上下端分别对应装配时，能够获得较佳的立体声效果。此外，通过将小体积的发声装置与天线进行集成，可提高集成度。
上述的安装部11根据实际情况，可以选择一端开口或两端开口结构。一端开口结构中，封闭端为与振动系统对应的一端时，允许在封闭端上开设出声孔；从开口端对振动系统和磁路系统依次进行装配后，由磁路系统本身对开口端进行封闭或采用密封盖对开口端进行封闭。
如图5、图11所示，天线5可设置于所述后腔部上。为了便于避免天线对发声装置的工作干扰，可将天线设置在发声装置的外表面，例如：设置在后腔部的外表面上。
在实际应用中，天线5包括但不限于激光直接成型(LDS，Laser-Direct-structuring)天线、柔性印刷电路板(FPCB)天线或金属天线。
例如：若天线5为LDS天线，则可通过激光发声装置的外表面活化出天线图案，再通过蒸镀金属形成LDS天线；若天线5为FPCB天线或金属天线，则可采用粘贴的方式将天线5固定于发声装置的外表面。天线5的形状可根据实际需要进行设计，本发明对此不作具体限定。
如图2所示，后腔部12位于安装部11的第一侧壁111外侧面上。需要说明的是，安装部11的第一侧壁111内侧面朝向振动系统21和磁路系统22；安装部11的第一侧壁111外侧面背向振动系统21和磁路系统22。
在一种可实现的方案中，如图2所示，振动系统21包括振膜211、电连接件212以及音圈213；音圈213固定于振膜211一侧，且悬设在磁路系统22的磁间隙中，电连接件212与音圈213接触设置，振膜211固定于安装部11上。其中，电连接件212与外部电路连接为音圈213通电，电连接件212包括但不限于柔性电路板FPCB。此外，如图6所示，振动系统21还可包括补强部214，补强部214贴设在振膜211远离音圈的一侧。
在另一种可实现的方案中，磁路系统22可为单磁路系统、三磁路系统或五磁路系统，本实施例对此不作具体限定。以五磁路系统为例，磁路系统22包括：导磁轭221、中心磁铁222和边磁铁223；中心磁铁222固定于导磁轭221上，边磁铁223固定于导磁轭221上，且位于中心磁铁222周侧。中心磁铁222与边磁铁223之间形成有磁间隙。
进一步的，如图6和图7所示，磁路系统22可包括边导磁板224和/或中心导磁板225。边导磁板224可为独立部件，通过粘贴固定于边磁铁223远离导磁轭221的一侧；或者，如图7所示，边导磁板224注塑在安装部内。边导磁板224与边磁铁远离导磁轭221的一侧接触设置(如图2所示)。将边导磁板224注塑在安装部内，不仅可减小发声装置的体积，还可进一步对磁路系统进行固定，提高发声装置的稳固性。
可选地，如图2所示，所述安装部11为两端开口结构；所述磁路系统22固定于所述安装部11的第一端开口处，且所述第一端开口由所述磁路系统22中的导磁轭221密封；所述振动系统21固定于所述安装部11的第二端开口处，且所述第二端开口处结合有位于所述振动系统21外侧的前盖31。前盖用于保护振动系统中的振膜不受损坏。由导磁轭221对第一端口进行密封，避免了密封板使用，不仅可减少成本，还可进一步减少体积。具体实施时，导磁轭221具有与第一端开口适配的形状。如图5所示，前盖31上开设有出声孔310。具体实施时，前盖31可通过超声熔接、粘贴或螺丝等方式结合于第二端开口 处。
在一具体的实现结构中，如图2所示，后腔部12包括后盖123和自所述安装部11的第一侧壁111向外一体延伸而成的主体结构，所述主体结构包括底壁121和第二侧壁122；所述底壁121、所述第二侧壁122以及所述第一侧壁111一体成型，共同围成开放式腔体；所述开放式腔体由后盖123密封形成所述后腔120。所述后腔120位于第一侧壁111外侧。
在本实施例中，如图11所示，天线5可设置在后腔部12的主体结构和/或后盖123的外侧面上。需要说明的是，后盖123可为塑料材质或金属材质。当后盖123为金属材质时，为了避免LDS天线的短路，可只将LDS天线设置在主体结构的外侧面上。图11所示的是FPCB天线或金属天线粘贴在后腔部12的主体结构和后盖123的外侧面上；图5所示的是LDS天线设置在后腔部12上。
具体地，如图3、图5和图8所示，所述天线5的两端馈电点51位于所述第二侧壁122的外侧面上；所述天线5与所述两端馈电点51相连的主体部分52设置在所述底壁121远离所述后腔120的端面上。底壁121和第二侧壁122为一体成型结构，可确保天线位于同一个壳体上以保证天线性能。天线5的两端馈电点与电子设备中与主板电连接的弹片接触设置，以由主板控制天线5的工作状态。
在另一具体实现结构中，所述后腔部12包括后盖123以及单独成型的拖壳结构；所述拖壳结构形成一端开口的开放式腔体；所述拖壳结构的开口端盖设有后盖123，所述后盖123密封所述开放式腔体，以形成所述后腔120；所述拖壳结构通过涂胶粘贴固定于所述第一侧壁111外侧。拖壳结构的与所述第一侧壁11连接处开设有与所述后声孔112连通的通孔。
需要说明的是，一体成型的主体结构与单独成型的拖壳结构相比，可节约胶体所占用的空间。且采用一体成型时，仅是对单体壳体进行了延伸设计，结构简单，且不需要进行发声单体与外部拖壳结构之间的装配，可以简化制作工艺与安装工艺，提供生产效率。
为了避免后腔设置带来的纵向尺寸(Z向尺寸)的增加，可将开放式腔体 的开口端与安装部的第一端开口设置在发声装置的同一侧，且齐平设置，具体地，所述后盖123远离所述后腔120的端面与所述导磁轭221远离所述振动系统21的端面齐平设置；或者，所述底壁121远离所述后腔120的端面与所述前盖31远离所述振动系统21的端面齐平设置。
在一具体实施例中，所述后盖123远离所述后腔120的端面与所述导磁轭221远离所述振动系统21的端面齐平设置，且所述底壁121远离所述后腔120的端面与所述前盖31远离所述振动系统21的端面齐平设置。这样一来，在不增加发声装置纵向尺寸的基础上，可尽可能地增大后腔体积，以得到较好的声学性能。
进一步的，如图2所示，所述安装部11呈矩形结构；所述后腔120沿着所述矩形结构的长边侧和/或短边侧设置。所述后腔120可在矩形结构的一边、多边或一周设置，本发明对此不作具体限定。本领域的技术人员可根据需求以及外部电子产品的内部结构进行合理设置。例如：可沿着矩形结构的相邻的两侧边或多侧边设置，即沿着相邻的一长侧边和一短侧边设置；或者，沿着相邻的一长侧边和两短侧边设置；或者，沿着相邻的一短侧边或一长侧边设置，这样，后腔120可为一连通的腔体，形状较规则，有利于提高声学性能。图2所示的是：后腔120沿着矩形结构的长侧边设置。
需要说明的是，当磁路系统和振动系统组成的内核为矩形结构时，安装部即可采用上述的矩形结构，当磁路系统和振动系统组成的内核为跑道形或圆形时，安装部可采用椭圆形结构或圆形结构。
此外，还可在后腔120内填满吸音材料，以达到扩容的目的。所述吸音材料包括但不限于吸音颗粒和吸音棉。可在用后盖密封后腔部之前，将吸音材料填充进后腔内，或者，如图2和图6所示，在所述后盖上开设贯通孔1230，所述吸音材料自所述贯通孔1230处灌装进所述后腔120内。
当吸音材料为粉状或颗粒状材料时，为了防止后腔120内的吸音材料进入磁路系统22中影响发声装置的工作以及防止后腔120内的吸音材料从贯通孔中泄露出去，所述后声孔112处覆盖有第一透气隔离网40，用于抵挡所述吸音材料穿过。如图2和图6所示，所述贯通孔1230处还覆盖有第二透气隔离 件1231，所述第二透气隔离件1231将所述吸音材料与外部环境隔离。第一透气隔离件40和第二透气隔离件1231包括但不限于网布、耐腐蚀金属网。在贯通孔1230处覆盖第二透气隔离件1231不仅可防止吸音材料的泄露，还可通过第二透气隔离件1231上的气孔平衡内外压，提高声学性能。
当吸音材料为吸音颗粒时，作为一种具体的实施方式，该吸音颗粒可以是沸石颗粒，其包括多个沸石粒子，每一沸石粒子的硅铝摩尔比可以＞200，或者＜200，或者为不含铝的沸石粒子。
为了进一步减小发声装置的水平尺寸，可在安装部11的第一侧壁111上对应边磁铁的位置处设置缺口，将边磁铁容置在缺口中，并由边磁铁对缺口进行密封，这相当于节省了第一侧壁所占用的水平尺寸。具体地，如图2、图3和图4所示，磁路系统22包括中心磁铁222和边磁铁223；安装部11的第一侧壁111上设置有与边磁铁223适配的缺口1110；边磁铁223安置在缺口1110内，并由边磁铁223对缺口1110进行密封；边磁铁223的外侧面与第一侧壁111的外侧面齐平设置。边磁铁223远离中心磁铁222的侧面为其外侧面。
本发明又一实施例还提供了一种电子设备。该电子设备，包括主板及上述任一实施例中的发声装置；天线5与主板电连接。具体地，天线5的两端馈电点51与主板电连接的弹片接触设置。
具体地，如图1和图2所示，该发声装置包括：振动系统21、磁路系统22、壳体1和天线5；所述壳体1包括至少一端开口的安装部11以及对应设置在所述安装部11的第一侧壁111外侧且用于形成后腔120的后腔部12；所述磁路系统22和所述振动系统21固定于所述安装部11内；所述第一侧壁111正对所述后腔120的位置处开设有连通所述磁路系统22中磁间隙与所述后腔120的后声孔112；天线5设置在所述发声装置上。
上述电子产品包括但不限于手机、掌上电脑等。
进一步的，外壳和显示屏；所述发声装置的数量为两个；两个所述发声装置均设置在所述外壳内部，且分别对应位于所述显示屏的上方和下方位置。如图9和图10，外壳上位于显示屏的上方设置有第一出音口7，位于显示屏的下方设置有第二出音口8。外壳内部正对第一出音口7和第二出音口8的位置处 分别设置有上述的发声装置。
电子产品中位于不同位置处的两个发声装置同时发声可实现良好的立体声效果。
虽然已经通过示例对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (14)

  1. 一种发声装置，其特征在于，包括：振动系统、磁路系统、壳体和天线；
    所述壳体包括至少一端开口的安装部以及对应设置在所述安装部的第一侧壁外侧且用于形成后腔的后腔部；
    所述磁路系统和所述振动系统固定于所述安装部内；
    所述第一侧壁正对所述后腔的位置处开设有连通所述磁路系统中磁间隙与所述后腔的后声孔；
    所述天线设置在所述后腔部上。
  2. 根据权利要求1所述的发声装置，其特征在于，所述安装部为两端开口结构；
    所述磁路系统固定于所述安装部的第一端开口处，且所述第一端开口由所述磁路系统中的导磁轭密封；
    所述振动系统固定于所述安装部的第二端开口处，且所述第二端开口处结合有位于所述振动系统外侧的前盖。
  3. 根据权利要求2所述的发声装置，其特征在于，所述后腔部包括后盖和自所述安装部的第一侧壁向外一体延伸而成的主体结构，所述主体结构包括底壁和第二侧壁；
    所述底壁、所述第二侧壁以及所述第一侧壁一体成型，共同围成开放式腔体；
    所述开放式腔体由所述后盖密封形成所述后腔。
  4. 根据权利要求3所述的发声装置，其特征在于，所述天线的两端馈电点位于所述第二侧壁的外侧面上；
    所述天线与所述两端馈电点相连的主体部分设置在所述底壁远离所述后腔的端面上。
  5. 根据权利要求3所述的发声装置，其特征在于，所述后盖远离所述后腔的端面与所述导磁轭远离所述振动系统的端面齐平设置；
    和/或，所述底壁远离所述后腔的端面与所述前盖远离所述振动系统的端面齐平设置。
  6. 根据权利要求2所述的发声装置，其特征在于，所述后腔部包括后盖以及单独成型的拖壳结构；
    所述拖壳结构形成一端开口的开放式腔体；
    所述拖壳结构的开口端盖设有所述后盖，所述后盖密封所述开放式腔体，以形成所述后腔；
    所述拖壳结构通过涂胶粘贴固定于所述第一侧壁外侧；
    所述拖壳结构的与所述第一侧壁的连接处开设有与所述后声孔连通的通孔。
  7. 根据权利要求1-6中任一项所述的发声装置，其特征在于，所述安装部呈矩形结构；
    所述后腔沿着所述矩形结构的长边侧和/或短边侧设置。
  8. 根据权利要求1-6中任一项所述的发声装置，其特征在于，所述后腔内填满吸音材料；
    所述后盖上开设有贯通孔，所述吸音材料自所述贯通孔处灌装进所述后腔内。
  9. 根据权利要求8所述的发声装置，其特征在于，在所述后声孔处覆盖有第一透气隔离件，用于抵挡所述吸音材料穿过；
    所述贯通孔处还覆盖有第二透气隔离件，所述第二透气隔离件将所述吸音材料与外部环境隔离。
  10. 根据权利要求1-6中任一项所述的发声装置，其特征在于，所述天线包括激光直接成型天线、柔性印刷电路板天线或金属天线。
  11. 根据权利要求1-6中任一项所述的发声装置，其特征在于，所述磁路系统包括中心磁铁和边磁铁；
    所述安装部的第一侧壁上设置有与所述边磁铁适配的缺口；
    所述边磁铁安置在所述缺口内，并由所述边磁铁对所述缺口进行密封；
    所述边磁铁的外侧面与所述第一侧壁的外侧面齐平设置。
  12. 根据权利要求1-6中任一项所述的发声装置，其特征在于，所述磁路系统的边导磁板注塑在所述安装部内。
  13. 一种电子设备，其特征在于，包括主板及上述权利要求1-14中任一项所述的发声装置；
    所述天线与所述主板电连接。
  14. 根据权利要求13所述的电子设备，其特征在于，还包括：外壳和显示屏；
    所述发声装置的数量为两个；
    两个所述发声装置均设置在所述外壳内部，且分别对应位于所述显示屏的上方和下方位置。
PCT/CN2018/125638 2018-04-24 2018-12-29 一种发声装置及电子设备 WO2019205721A1 (zh)

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