WO2020134312A1 - 一种发声装置 - Google Patents

一种发声装置 Download PDF

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Publication number
WO2020134312A1
WO2020134312A1 PCT/CN2019/110097 CN2019110097W WO2020134312A1 WO 2020134312 A1 WO2020134312 A1 WO 2020134312A1 CN 2019110097 W CN2019110097 W CN 2019110097W WO 2020134312 A1 WO2020134312 A1 WO 2020134312A1
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WO
WIPO (PCT)
Prior art keywords
sound
steel sheet
main board
opening
diaphragm
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/CN2019/110097
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English (en)
French (fr)
Inventor
童迪江
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.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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Filing date
Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020134312A1 publication Critical patent/WO2020134312A1/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/026—Supports for loudspeaker casings
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements

Definitions

  • the utility model relates to an electroacoustic transducing device, in particular to an audible device.
  • the existing sound-generating device is usually attached with foam behind the monomer and connected with the bottom shell.
  • attaching foam takes up a high space of the sound-generating device, and on the other hand, the foam has poor thermal conductivity, which is not conducive to sound. Device cooling.
  • the purpose of the utility model is to provide a sound-generating device, which aims to solve the technical problem in the prior art that the connection between the sound-generating monomer and the bottom case takes up space and is not conducive to heat dissipation.
  • a sound-generating device includes: a casing and a sound-generating monomer with a diaphragm; the casing includes a cover plate and a bottom plate, the cover plate and the bottom plate cooperate to form a receiving cavity, and the sound-generating monomer is fixedly placed at The accommodating cavity; the bottom plate includes a main board and a steel sheet embedded in the main board, the main board is provided with a first opening, the steel sheet is fixedly connected to the main board and covers the first opening, so The side of the sound-generating monomer away from the diaphragm is welded and fixed to the first steel sheet.
  • the first opening penetrates the main board, an inner wall surrounding the first opening is correspondingly formed on the main board, the steel sheet and the inner wall form a groove, and the sound-generating monomer is placed in the recess The groove is welded and fixed with the steel sheet.
  • the first steel sheet includes a bottom wall that fixes the sound-generating monomer, and a bent portion that extends from the edge of the bottom wall and is bent and fixed to the inner wall, and the bent portion faces the cover plate The direction is bent.
  • the steel sheet is integrally molded with the main board by injection molding.
  • the cover plate is provided with a sound output hole corresponding to the diaphragm.
  • the beneficial effect of the utility model lies in that the bottom plate and the cover plate cooperate with each other to form a containing cavity, and the sound-generating monomer is fixedly placed in the containing cavity.
  • the bottom plate includes a main board and a steel sheet embedded in the main board. A first opening is opened in the main board, and a steel sheet is placed in the first opening, and the steel sheet is welded and fixed to the side of the sounding monomer away from the diaphragm.
  • This technical solution directly connects the steel sheet to the side of the sound-generating monomer away from the diaphragm by welding, on the one hand, it can solve the vibration problem of the shell of the sound-generating device; Heat dissipation.
  • FIG. 1 is a schematic structural diagram of a bottom plate and a sound-generating unit of a sound-generating device of the present invention
  • FIG. 2 is a cross-sectional view of a sound-generating device of the present invention.
  • a sound-generating device includes: a housing and a sound-generating monomer 10 with a diaphragm; the housing includes a cover plate 40 and a bottom plate 20, the cover plate 40 and the bottom plate 20 cooperate to form an accommodating cavity, and the sound-generating cell 10 is fixedly placed in the accommodating cavity Medium; bottom plate 20 includes a main board 21 and a steel sheet 22 embedded in the main board 21, the main board 21 is provided with a first opening, the steel sheet 22 is fixedly connected to the main board 21 and covers the first opening, the sounding unit 10 is far away from the diaphragm One side is welded and fixed to the steel sheet 22.
  • the bottom plate 20 and the cover plate 40 cooperate with each other to form a receiving cavity, and the sounding monomer 10 is fixedly placed in the receiving cavity.
  • the bottom plate 20 includes a main board 21 and a steel sheet 22, and the steel sheet 22 is fixed to the main board 21 by way of embedding; a first opening is opened in the main board 21, and a steel sheet 22 is placed in the first opening.
  • This technical solution directly connects the steel sheet 22 and the side of the sound-generating monomer 10 away from the diaphragm by welding.
  • the steel sheet 22 and the sound-generating monomer 10 are fixed by spot welding, which can be used in a short time Internal welding, good welding quality and high production efficiency.
  • the vibration problem of the casing of the sound-emitting device can be solved, and on the other hand, the height of the sound-emitting device can be reduced, which is conducive to heat dissipation of the sound-emitting device.
  • the first opening penetrates the main board 21, and the main board 21 corresponds to form an inner wall surrounding the first opening
  • the steel sheet 22 is placed in the first opening, cooperates with the inner wall to form a groove 30, and the sound-generating monomer 10 is placed in the recess
  • the steel sheet 22 is welded and fixed in the groove 30. Positioning welding of the sound-generating monomer 10 through the groove 30 formed by the steel sheet 22 and the inner wall is beneficial to improving the quality of welding, and at the same time, reducing the height of the sound-generating device and expanding the scope of application of the sound-generating device.
  • the steel sheet 22 includes a bottom wall 221 and a bent portion 222.
  • the bottom wall 221 is used to fix the sound-generating monomer 10.
  • the bent portion 222 is formed by bending the edge of the bottom wall 221 toward the cover plate 40 to fix the bottom wall. 221 and the motherboard 21.
  • the connection between the steel sheet 22 and the main board 21 is more stable and stable, that is, the sound-emitting unit 10 is ensured to be stably fixed on the bottom board 20.
  • the steel sheet 22 and the main board 21 are injection-molded into one body. The connection method of the injection molding of the steel sheet 22 and the main board 21 as a whole and the fixing method of welding the sounding monomer 10 and the steel sheet 22 solve the problem of the vibration of the casing of the sounding device in the prior art.
  • the cover plate 40 is provided with a sound output hole corresponding to the diaphragm.
  • the sound output hole may be provided on the side of the cover plate 40.
  • the utility model fixes the sound-generating monomer 10 in the accommodating cavity formed by the cover plate and the bottom plate 20.
  • a steel sheet 22 is fixedly placed on the first opening, and the steel sheet 22 passes through the bending portion 222 and
  • the main board 21 is injection molded into one body, and the steel sheet 22 and the inner wall of the main board 21 form a groove to position and place the sounding monomer 10.
  • the side of the sounding monomer 10 away from the diaphragm and the first steel sheet 22 are fixed by spot welding. The problem of vibration of the casing of the sounding device is solved, and at the same time, the height of the sounding device is reduced, which is beneficial to heat dissipation of the sounding device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Building Environments (AREA)
  • Toys (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

本实用新型提供了一种发声装置，包括：壳体和具有振膜的发声单体；所述壳体包括盖板和底板，所述盖板和所述底板相配合形成容纳腔，所述发声单体固定放置在所述容纳腔中；所述底板包括主板和嵌设于所述主板的钢片，所述主板开设有第一开口，所述钢片与所述主板固定连接并覆盖住所述第一开口，所述发声单体的远离振膜的一侧与所述钢片焊接固定。本实用新型的技术方案用焊接的固定方式将钢片与发声单体的远离振膜的一侧直接连接，一方面可以解决壳体振动问题，另一方面缩小发声装置的高度，利于发声装置散热。

Description

一种发声装置 技术领域
本实用新型涉及一种电声换能器件，尤其涉及一种发声装置。
 背景技术
现有的发声装置为了避免壳震，通常在单体后面贴泡棉与底壳连接，但是，贴泡棉一方面占用发声装置的高度空间，另一方面泡棉导热性能不好，不利于发声装置散热。
 技术问题
本实用新型的目的在于提供一种发声装置，旨在解决现有技术中发声单体与底壳的连接占空间且不利于散热的技术问题。
 技术解决方案
本实用新型的技术方案如下：
一种发声装置，包括：壳体和具有振膜的发声单体；所述壳体包括盖板和底板，所述盖板和所述底板相配合形成容纳腔，所述发声单体固定放置在所述容纳腔中；所述底板包括主板和嵌设于所述主板的钢片，所述主板开设有第一开口，所述钢片与所述主板固定连接并覆盖住所述第一开口，所述发声单体的远离所述振膜的一侧与所述第一钢片焊接固定。
进一步地，所述第一开口贯穿所述主板，所述主板上对应形成环绕所述第一开口的内壁，所述钢片与所述内壁形成凹槽，所述发声单体放置在所述凹槽中与所述钢片焊接固定。
进一步地，所述第一钢片包括固定所述发声单体的底壁以及自所述底壁边缘弯折延伸并与所述内壁固定的弯折部，所述弯折部朝所述盖板方向弯折。
进一步地，所述钢片与所述主板注塑成型为一体。
进一步地，所述盖板对应所述振膜开设有出声孔。
 有益效果
本实用新型的有益效果在于: 底板和盖板互相配合形成容纳腔，发声单体固定放置在容纳腔中。底板包括主板和嵌设于主板的钢片，在主板上开设第一开口，第一开口中放置钢片，钢片与发声单体的远离振膜的一侧焊接固定。本技术方案用焊接的固定方式将钢片与发声单体的远离振膜的一侧直接连接，一方面可以解决发声装置的壳体的振动问题，另一方面缩小发声装置的高度，利于发声装置散热。
 附图说明
图1为本实用新型的一种发声装置的底板与发声单体的结构示意图；
图2为本实用新型的一种发声装置的剖面图。
在附图中，各附图标记表示：
10、发声单体；20、底板；21、主板；22、钢片；221、底壁；222、弯折部；30、凹槽；40、盖板。
 本发明的实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本实用新型。
应该指出，以下详细说明都是例示性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
现在，将参照附图1-图2详细地描述根据本申请的示例性实施方式。一种发声装置，包括：壳体和具有振膜的发声单体10；壳体包括盖板40和底板20，盖板40和底板20相配合形成容纳腔，发声单体10固定放置在容纳腔中；底板20包括主板21和嵌设于主板21的钢片22，主板21开设有第一开口，钢片22与主板21固定连接并覆盖住第一开口，发声单体10的远离振膜的一侧与钢片22焊接固定。
在本技术方案中，底板20和盖板40互相配合形成容纳腔，发声单体10固定放置在容纳腔中。底板20包括主板21和钢片22，钢片22通过嵌设的方式与主板21固定；在主板21上开设第一开口，第一开口中放置钢片22。本技术方案用焊接的固定方式将钢片22与发声单体10的远离振膜的一侧直接连接，优选地，用点焊的焊接方式固定钢片22和发声单体10，可以在短时间内焊接，焊接质量好且生产效率高。运用本实用新型的技术方案，一方面可以解决发声装置的壳体的振动问题，另一方面缩小发声装置的高度，利于发声装置散热。
如图2所示，第一开口贯穿主板21，主板21则对应形成环绕第一开口的内壁，钢片22放置在第一开口中，与内壁配合形成凹槽30，发声单体10放置在凹槽30中与钢片22焊接固定。通过钢片22与内壁形成的凹槽30对发声单体10进行定位焊接，有利于提高焊接的质量，同时，缩小了发声装置的高度，扩大了发声装置的适用范围。
优选地，钢片22包括底壁221和弯折部222，底壁221用于固定发声单体10，弯折部222则由底壁221边缘朝向盖板40弯折形成，用于固定底壁221与主板21。通过弯折部222嵌入主板21的固定方式，使得钢片22与主板21的连接更为牢固稳定，即保证了发声单体10稳定的固定在底板20上。进一步地，钢片22与主板21注塑成型为一体。钢片22与主板21注塑成型为一体的连接方式和发声单体10与钢片22焊接的固定方式，解决了现有技术中发声装置的壳体振动的问题。
为了使发声装置正常工作，盖板40对应振膜开设有出声孔，优选地，出声孔可设置在盖板40的侧面上。
本实用新型将发声单体10固定在盖板和底板20形成的容纳腔中，通过在主板21上开设第一开口，第一开口上固定放置钢片22，钢片22通过弯折部222与主板21注塑成型为一体，且钢片22与主板21的内壁形成凹槽定位放置发声单体10。最后，用点焊的焊接方式将发声单体10的远离振膜的一侧和第一钢片22固定。解决了发声装置壳体振动的问题，同时缩小了发声装置高度，利于发声装置散热。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (5)

  1. 一种发声装置，其特征在于，包括：壳体和具有振膜的发声单体；
    所述壳体包括盖板和底板，所述盖板和所述底板相配合形成容纳腔，所述发声单体固定放置在所述容纳腔中；所述底板包括主板和嵌设于所述主板的钢片，所述主板开设有第一开口，所述钢片与所述主板固定连接并覆盖住所述第一开口，所述发声单体的远离所述振膜的一侧与所述钢片焊接固定。
  2. 根据权利要求1所述的发声装置，其特征在于，所述第一开口贯穿所述主板，所述主板上对应形成环绕所述第一开口的内壁，所述钢片与所述内壁形成凹槽，所述发声单体放置在所述凹槽中与所述钢片焊接固定。
  3. 根据权利要求2所述的发声装置，其特征在于，所述钢片包括固定所述发声单体的底壁以及自所述底壁边缘弯折延伸并与所述内壁固定的弯折部，所述弯折部朝所述盖板方向弯折。
  4. 根据权利要求1所述的发声装置，其特征在于，所述钢片与所述主板注塑成型为一体。
  5. 根据权利要求1-4中任一项所述的发声装置，其特征在于，所述盖板对应所述振膜开设有出声孔。
PCT/CN2019/110097 2018-12-28 2019-10-09 一种发声装置 Ceased WO2020134312A1 (zh)

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CN209390333U (zh) * 2018-12-28 2019-09-13 瑞声科技(新加坡)有限公司 一种发声装置
CN112104930B (zh) * 2020-08-27 2022-05-03 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱

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CN1602648A (zh) * 2002-11-28 2005-03-30 松下电器产业株式会社 扬声器
CN206341402U (zh) * 2016-10-26 2017-07-18 瑞声科技(新加坡)有限公司 扬声器箱
CN208174985U (zh) * 2018-01-04 2018-11-30 瑞声科技(新加坡)有限公司 扬声器
CN209390333U (zh) * 2018-12-28 2019-09-13 瑞声科技(新加坡)有限公司 一种发声装置

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