WO2017045463A1 - 受话器 - Google Patents

受话器 Download PDF

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Publication number
WO2017045463A1
WO2017045463A1 PCT/CN2016/089371 CN2016089371W WO2017045463A1 WO 2017045463 A1 WO2017045463 A1 WO 2017045463A1 CN 2016089371 W CN2016089371 W CN 2016089371W WO 2017045463 A1 WO2017045463 A1 WO 2017045463A1
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WO
WIPO (PCT)
Prior art keywords
casing
receiver
housing
diaphragm
mesh
Prior art date
Application number
PCT/CN2016/089371
Other languages
English (en)
French (fr)
Inventor
毛林进
陈钢
Original Assignee
歌尔股份有限公司
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.)
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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
Priority to EP16845577.2A priority Critical patent/EP3352472B8/en
Priority to US15/745,101 priority patent/US10284936B2/en
Publication of WO2017045463A1 publication Critical patent/WO2017045463A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • 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
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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
    • 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 receiver is a device capable of converting electroacoustic energy and is widely used in electronic terminal devices such as mobile phones and telephones.
  • the conventional receiver structure generally includes a magnetic circuit system, a vibration system, and an outer casing for accommodating the magnetic circuit system and the vibration system.
  • the outer casing usually includes an upper shell, a middle shell and a lower shell that cooperate with each other, and the diaphragm of the vibration system will
  • the receiver is divided into two chambers: a front sound chamber and a rear sound chamber.
  • the front sound chamber is generally a space of a diaphragm, a middle shell and an upper shell
  • the rear sound chamber is generally a space of a diaphragm, a middle shell and a lower shell
  • the rear sound chamber is usually opened.
  • a rear sound hole that connects the cavity to the external environment.
  • the existing receiver structure has an open design in the rear sound hole of the rear sound chamber.
  • This structure makes the vibration system directly communicate with the external environment, which causes small particles, hair fibers, dust and other impurities in the external environment to fall easily during the production process.
  • the voice coil and the diaphragm easily collide with impurities entering the interior, resulting in poor product performance.
  • the technical problem to be solved by the utility model is that a receiver is provided, and the mesh cloth is injected at the position of the sound hole of the rear sound chamber to isolate the back cavity from the external environment.
  • an earphone including an outer casing; the outer casing includes a first casing, a second casing and a third casing that cooperate with each other from top to bottom; a vibration system is accommodated in the cavity formed by the outer casing; the vibration system includes a diaphragm; the diaphragm divides the receiver into two cavities of a front acoustic cavity and a rear acoustic cavity, wherein the third casing Injection molding; the third housing is provided with an acoustic hole communicating with the outer sound chamber; and the third housing is injection-molded with a mesh corresponding to the position of the sound hole; the mesh The rear sound chamber and the outer ring Quarantine.
  • the mesh is a sector, a circle or a square structure.
  • a space of the diaphragm, the second casing and the first casing forms the front acoustic cavity; the diaphragm, the second casing and the third casing The space forms the rear acoustic cavity.
  • the basin frame is injection molded integrally with the third housing of the receiver to form a housing assembly; the third housing of the receiver is a plastic member located at a corner of the housing assembly.
  • the plastic member is provided with an sound hole of the sound chamber behind the receiver.
  • the vibration system further includes a voice coil fixedly bonded to the diaphragm; a center portion of the diaphragm is combined with a reinforcing portion.
  • FIG. 2 is a schematic rear view of the structure of a receiver according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view showing the structure of a receiver of the embodiment of the present invention.
  • Figure 5 is a cross-sectional view showing the structure of the receiver of the second embodiment of the present invention.
  • Reference numerals include: 1, a first housing, 2, a second housing, 3, a third housing, 3', a housing assembly, 301, an acoustic hole, 302, a mesh, a 31', a basin Frame, 32', plastic parts, 4, basin frame, 5, magnet, 5', magnet, 6, Huasi, 6', Huasi, 7, voice coil, 8, diaphragm, 8', diaphragm, 9 , reinforcement, 9', reinforcement, 10, metal ring, 11, hearing aid voice, 12, colloid.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the diaphragm 8 is fixed on the second casing 2, and the receiver is divided into two chambers, a front acoustic chamber and a rear acoustic chamber.
  • the diaphragm 8 and the second housing 2 and the first housing are understood.
  • the space of 1 forms a front acoustic cavity
  • the second casing 2 and the third casing 3 forms a rear acoustic cavity
  • the third casing 3 is provided with an acoustic hole 301 communicating with the outside as a sound of the rear acoustic cavity.
  • the hole, the position of the third housing 3 corresponding to the sound hole 301 is injection-molded with a mesh 302, and the mesh 302 isolates the rear sound chamber from the external environment.
  • the mesh cloth is combined with the sound hole at the sound chamber of the rear sound chamber, so that impurities such as dust, fine fibers and fine particles in the external environment can be prevented from falling into the rear sound chamber, thereby improving the performance of the product and causing poor performance. Steps ensure the acoustic performance of the product.
  • the sound hole 301 is opened at a corner position of the third casing 3, and the mesh 302 is injection-molded corresponding to the corner position of the third casing 3, and covers the sound hole 301;
  • the structure is a fan shape, a circle shape, or a square shape.
  • the mesh cloth may have any regular or irregular shape as long as it can cover the sound hole 301, and the specific shape is not limited thereto.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the basin structure as the magnetic circuit system and the third housing as the outer casing are separated structures.
  • the two are integrally molded to form the housing assembly 3', that is, at this time, the housing assembly 3' specifically includes the basin frame 31' and the plastic member 32' at the corner position, and the third The housing is the plastic piece 32' described herein.
  • the diaphragm 8' divides the receiver into two chambers, the front sound chamber and the rear sound chamber, and the sound hole 301 of the rear sound chamber is disposed on the plastic member 32' located at the corner of the housing assembly 3'.
  • the mesh 302 is integrally molded and combined with the position of the sound hole 301 to isolate the sound cavity and the external environment.
  • the specific shape of the mesh 302 is the same as that of the embodiment, and is not limited as long as the sound hole 301 can be covered. .
  • the magnet 5' specifically includes a center magnet and two side magnets disposed opposite each other along a pair of opposite sides of the center magnet.
  • the washer 6' includes a center washer and a cover side magnet covering the surface of the center magnet.
  • the diaphragm 8' of the vibration system is designed as a silicone membrane, which can improve the temperature resistance of the diaphragm and increase the vibration amplitude of the diaphragm.
  • the fixing method is the injection molding combined with the second housing 2;
  • the high-frequency performance reinforcing portion 9' is a concave structure, which can reduce the thickness of the product while optimizing the acoustic performance of the product.
  • the technical solution is intended to correspond to the injection molding mesh for the position of the sound hole of the rear acoustic cavity, so as to isolate the rear acoustic cavity and the external environment, and the implementation thereof is independent of the specific design of the components of the magnetic circuit system and the vibration system, that is,
  • the implementation of the technical solution is not limited to the above-mentioned structure of the magnetic circuit structure, the diaphragm or the reinforcing portion, and the mesh cloth should be regarded as the protection of the utility model as long as the mesh is injected at the position of the sound hole of the sound chamber after the receiver product. range.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Headphones And Earphones (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

受话器，包括外部壳体，外部壳体包括自上而下相互配合的第一壳体（1）、第二壳体（2）和第三壳体（3），外部壳体形成的空腔内收容有振动***，振动***包括振膜（8），振膜（8）将受话器分割为前声腔和后声腔两个腔体，第三壳体（3）注塑成型，第三壳体（3）上开设有连通外界的后声腔的出声孔（301），第三壳体（3）上对应出声孔（301）的位置注塑结合有网布（302），网布（302）将后声腔与外部环境隔离。该受话器能够有效避免外界环境中的杂质落入后腔而引起的产品性能不良，对产品起到防护作用。

Description

受话器 技术领域
本实用新型涉及电声领域，具体的涉及一种受话器。
背景技术
受话器是一种能够实现电声能转化的器件，广泛应用于手机、电话等电子终端装置中。常规的受话器结构，一般包括磁路***、振动***以及收容磁路***和振动***的外部壳体，外部壳体通常又包括相互配合的上壳、中壳和下壳，振动***的振膜将受话器分为前声腔和后声腔两个腔体，其中，前声腔一般为振膜、中壳和上壳的空间，而后声腔一般为振膜、中壳和下壳的空间，而后声腔通常开设有连通腔体与外界环境的后声孔。
现有的受话器结构，设置于后声腔的后声孔为开放式设计，这种结构使得振动***与外界环境直接相通，导致生产过程中外界环境的小颗粒、毛纤、灰尘等杂质容易落入后声腔中，受话器产品工作时，音圈、振膜易与进入内部的杂质碰撞，从而导致产品性能不良。鉴于此，需要针对目前的后声孔的设计进行改进，以避免上述杂质容易落入后腔的技术问题。
实用新型内容
本实用新型所要解决的技术问题是：提供一种受话器，在后声腔出声孔的位置注塑网布，隔离后腔与外界环境。
为了实现上述目的，本实用新型采用以下技术方案：一种受话器，包括外部壳体；所述外部壳体包括自上而下相互配合的第一壳体、第二壳体和第三壳体；所述外部壳体形成的空腔内收容有振动***；所述振动***包括振膜；所述振膜将所述受话器分割为前声腔和后声腔两个腔体，其中，所述第三壳体注塑成型；所述第三壳体上开设有连通外界的所述后声腔的出声孔；所述第三壳体上对应所述出声孔的位置注塑结合有网布；所述网布将所述后声腔与外部环 境隔离。
作为一种改进，所述出声孔开设于所述第三壳体的角部位置；所述网布对应于所述第三壳体的角部位置注塑结合，并且覆盖所述出声孔。
作为一种改进，所述网布为扇形、圆形或者方形结构。
作为一种改进，所述振膜、所述第二壳体和所述第一壳体的空间形成所述前声腔；所述振膜、所述第二壳体和所述第三壳体的空间形成所述后声腔。
作为一种改进，还包括磁路***；所述磁路***包括盆架、固定于所述盆架内的磁铁和华司。
作为一种改进，所述盆架与所述受话器的第三壳体为分体式结构；所述盆架与所述受话器的第三壳体之间的空隙涂有胶体进行密封。
作为一种改进，所述盆架与所述受话器的第三壳体注塑为一体，形成壳体组件；所述受话器的第三壳体为位于所述壳体组件角部位置的塑胶件。
作为一种改进，所述塑胶件上开设有所述受话器后声腔的出声孔。
作为一种改进，所述振动***还包括与所述振膜粘结固定的音圈；所述振膜的中心位置结合有补强部。
相较于现有技术而言，本实用新型的受话器，其第三壳体上对应后声腔出声孔的位置注塑结合有网布，网布将产品后声腔与外界环境隔离开来，能够避免外界环境中的灰尘、毛纤、细小颗粒等杂质落入后腔而引起的产品性能不良，可起到一定的防护作用。
附图说明
图1为本实用新型实施例一受话器结构的***图；
图2为本实用新型实施例一受话器结构的背面外观示意图；
图3为本实用新型实施例一受话器结构的剖视图；
图4为本实用新型实施例二受话器结构的***图；
图5为本实用新型实施例二受话器结构的剖视图；
其中的附图标记包括：1、第一壳体，2、第二壳体，3、第三壳体，3’、壳体组件，301、出声孔，302、网布，31’、盆架，32’、塑胶件，4、盆架，5、磁铁，5’、磁铁，6、华司，6’、华司，7、音圈，8、振膜，8’、振膜，9、补强部，9’、补强部，10、金属环，11、助听音圈，12、胶体。
具体实施方式
下面结合附图，详细说明本实用新型内容：
实施例一：
参阅图1、图2和图3共同所示，本实施方式的受话器包括外部壳体，具体包括第一壳体1、第二壳体2和第三壳体3，第一壳体1、第二壳体2和第三壳体3自上而下相互配合，形成容纳磁路***和振动***的空腔。进一步的，磁路***包括盆架4、粘结固定于盆架4表面的磁铁5以及覆盖于磁铁5表面的华司6；第三壳体3为矩形的框体结构，且注塑成型，盆架4容置于第三壳体3的容纳空间内，盆架4与第三壳体3之间的空隙处填充有胶体12，以更好地实现密封。振动***包括振膜8以及与振膜8粘结固定的音圈7，金属环10用于支撑振膜8，金属环10与第二壳体2固定；另外，为了增强产品在高频处的声学性能，振膜8的中间位置还结合有补强部9，实施时，补强部9一般为刚性的复合层结构。此外，本实施方式的受话器还包括助听音圈11，当其与终端电子装置组配后，助听音圈11能够和助听器配合，起到放大声音信号的作用，对于一些听力障碍的人士有所帮助。
本实施方式中，振膜8固定于第二壳体2上，将受话器分为前声腔和后声腔两个腔体，具体可以理解为，振膜8、第二壳体2与第一壳体1的空间形成前声腔，振膜8、第二壳体2与第三壳体3的空间形成后声腔，第三壳体3上开设有连通外界的出声孔301，作为后声腔的出声孔，第三壳体3上对应出声孔301的位置注塑结合有网布302，网布302将后声腔与外界环境隔离开来。
通过上述技术方案，后声腔出声孔处结合网布，可以避免外部环境中的灰尘、毛纤、细小颗粒等杂质落入后声腔，改善产品因此引发的性能不良，进一 步保证产品的声学性能。
优选的，出声孔301开设于第三壳体3的角部位置，网布302对应于第三壳体3的角部位置注塑结合，并且覆盖出声孔301；再者网布302具体可以为扇形、圆形或者方形等结构，事实上，实施时，网布可以为任意规则或者不规则的形状，只要其能够覆盖出声孔301即可，具体形状不受此限。
实施例二：
参阅图4和图5共同所示，本实施方式与实施例一主要的区别在于：实施例一中，作为磁路***的盆架结构以及作为外部壳体的第三壳体为分体式结构，而本实施方式中，二者注塑为一体，形成壳体组件3’，也就是说，此时，壳体组件3’具体包括盆架31’以及位于角部位置的塑胶件32’，第三壳体即为此处所述的塑胶件32’。
在本实施方式中，振膜8’将受话器分割为前声腔和后声腔两个腔体，而后声腔的出声孔301则设置于位于壳体组件3’角部位置的塑胶件32’上，网布302对应出声孔301的位置一体注塑结合，从而隔离后声腔以及外部环境，网布302的具体形状同实施例一种所述，具体不受限制，只要能够覆盖出声孔301即可。
本实施方式中，磁铁5’具体包括中心磁铁以及沿中心磁铁的一组对边相对设置的两块边磁铁，相应的，华司6’包括覆盖于中心磁铁表面的中心华司以及覆盖边磁铁的边华司。振动***的振膜8’此处设计为硅胶膜，可提高振膜的耐温性能、增大振膜的振动幅度，其固定方式为与第二壳体2注塑结合；另外，用于增强产品高频性能的补强部9’为下凹的结构，可以在优化产品声学性能的同时降低产品的厚度。
需要说明的是，本技术方案旨在对于后声腔出声孔的位置对应注塑网布，以隔离后声腔和外部环境，其实施与磁路***、振动***各部件的具体设计无关，也就是说，本技术方案的实施并不限于上述的磁路结构、振膜或者补强部等的结构，只要是在受话器产品后声腔出声孔的位置注塑有网布都应当视为本实用新型保护的范围。
以上仅为本实用新型实施案例而已，并不用于限制本实用新型，但凡本领域普通技术人员根据本实用新型所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。

Claims (9)

  1. 一种受话器，包括外部壳体；所述外部壳体包括自上而下相互配合的第一壳体、第二壳体和第三壳体；所述外部壳体形成的空腔内收容有振动***；所述振动***包括振膜；所述振膜将所述受话器分割为前声腔和后声腔两个腔体，其特征在于：所述第三壳体注塑成型；所述第三壳体上开设有连通外界的所述后声腔的出声孔；所述第三壳体上对应所述出声孔的位置注塑结合有网布；所述网布将所述后声腔与外部环境隔离。
  2. 根据权利要求1所述的受话器，其特征在于：所述出声孔开设于所述第三壳体的角部位置；所述网布对应于所述第三壳体的角部位置注塑结合，并且覆盖所述出声孔。
  3. 根据权利要求2所述的受话器，其特征在于：所述网布为扇形、圆形或者方形结构。
  4. 根据权利要求1所述的受话器，其特征在于：所述振膜、所述第二壳体和所述第一壳体的空间形成所述前声腔；所述振膜、所述第二壳体和所述第三壳体的空间形成所述后声腔。
  5. 根据权利要求1所述的受话器，其特征在于：还包括磁路***；所述磁路***包括盆架、固定于所述盆架内的磁铁和华司。
  6. 根据权利要求5所述的受话器，其特征在于：所述盆架与所述受话器的第三壳体为分体式结构；所述盆架与所述受话器的第三壳体之间的空隙涂有胶体进行密封。
  7. 根据权利要求5所述的受话器，其特征在于：所述盆架与所述受话器的第三壳体注塑为一体，形成壳体组件；所述受话器的第三壳体为位于所述壳体组件角部位置的塑胶件。
  8. 根据权利要求7所述的受话器，其特征在于：所述塑胶件上开设有所述受话器后声腔的出声孔。
  9. 根据权利要求1所述的受话器，其特征在于：所述振动***还包括与所述振膜粘结固定的音圈；所述振膜的中心位置结合有补强部。
PCT/CN2016/089371 2015-09-15 2016-07-08 受话器 WO2017045463A1 (zh)

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