WO2017045260A1 - 受话器 - Google Patents

受话器 Download PDF

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Publication number
WO2017045260A1
WO2017045260A1 PCT/CN2015/094683 CN2015094683W WO2017045260A1 WO 2017045260 A1 WO2017045260 A1 WO 2017045260A1 CN 2015094683 W CN2015094683 W CN 2015094683W WO 2017045260 A1 WO2017045260 A1 WO 2017045260A1
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WO
WIPO (PCT)
Prior art keywords
casing
diaphragm
magnet
receiver
conductive member
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/CN2015/094683
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English (en)
French (fr)
Inventor
陈钢
毛林进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
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Goertek Inc
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Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to US15/745,583 priority Critical patent/US10129619B2/en
Publication of WO2017045260A1 publication Critical patent/WO2017045260A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements 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
    • 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
    • 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
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • 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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Definitions

  • the present invention relates to the field of electroacoustics, and in particular to a receiver.
  • 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, and the lower shell and the magnetic shell
  • the basin frame of the road system becomes the main rear cavity housing of the receiver product.
  • the lower shell is usually a plastic shell.
  • the plastic lower shell needs to be first fixed to the middle and upper shell components by ultrasonic welding, and then the basin frame is glued in the middle,
  • the product assembly process cannot be assembled once, but two steps are required to complete the assembly, which inevitably increases the process and the process in the production process.
  • Working hours lead to an increase in production costs.
  • the technical problem to be solved by the present invention is to provide a receiver, which can improve the assembly of the rear chamber shell in one time by improving the structure of the basin frame and the lower shell, simplifying the production process, saving man-hours and saving production cost.
  • an earphone including an outer casing; the outer casing including a first casing, a second casing and a third casing that cooperate with each other from top to bottom, wherein
  • the third housing is a unitary structure, including a magnetic conductive member and a plastic member integrally molded with the magnetic conductive member; the magnetic conductive member is bonded and fixed with a magnet and a washer; the magnetic conductive member The magnet is And the Huashi together constitutes a magnetic circuit system of the receiver; the third housing is ultrasonically welded and fixed to the second housing by the plastic member.
  • the third housing is a rectangular frame structure, and the plastic member is located at four corner regions of the third housing.
  • the third housing includes a bottom wall and two side walls;
  • the magnetic conductive member of the third housing includes a base and a pair of opposite sides from the base are vertically adjacent to the second shell Two side portions extending in a direction of the body;
  • the plastic member is coupled between the base portion and the side portion, and the base portion constitutes a bottom wall of the third casing, and the side portion is configured a sidewall of the third housing.
  • a vibration system is further included; the vibration system includes a diaphragm; the diaphragm divides the receiver into two cavities of a front cavity and a rear cavity; the diaphragm, the second casing and The space of the first housing forms the front cavity; the space of the diaphragm, the second housing and the third housing forms the rear cavity.
  • the magnetic conductive member is made of stainless steel.
  • the vibration system is fixed on the second casing;
  • the diaphragm is a silicone film, and is injection molded integrally with the second casing.
  • the lower side of the diaphragm is bonded with a voice coil; the lower side of the diaphragm is further combined with a reinforcing portion; and the reinforcing portion is a concave structure.
  • the magnet includes a center magnet bonded to a center position of the surface of the magnetic member and a pair of side magnets disposed on opposite sides of the center magnet; the washer includes a surface covering the center magnet The center of the Huashi and the edge of the edge of the magnet.
  • the first housing incorporates a spring that connects to an external circuit.
  • the third housing of the present invention is designed as a one-piece structure, including a magnetic conductive member and a plastic member integrally molded with the magnetic conductive member, wherein the magnetic conductive member fixes the magnet and The Huashi, together constitute a magnetic circuit system, and the third casing is ultrasonically welded and fixed by the plastic member and the second casing, that is, in the technical solution, the magnetic conductive component of the magnetic circuit system and the lower portion of the conventional receiver structure
  • Shell injection molding is a component that enables one-step assembly, which simplifies the production process and saves production time. This in turn reduces the production cost of the product.
  • Figure 1 is an exploded view of the structure of the receiver of the present invention
  • Figure 2 is a perspective view of the third housing structure of the receiver of the present invention.
  • FIG. 3 is a schematic rear view of the structure of the receiver of the present invention.
  • Figure 4 is a front elevational view showing the structure of the receiver of the present invention.
  • Figure 5 is a cross-sectional view showing the structure of the receiver of the present invention.
  • the reference numerals include: 1, a first housing, 11, a spring, 2, a second housing, 3, a third housing, 301, a bottom wall, 302, a side wall, 31, a magnetically conductive member, 311, Base, 312, side, 32, plastic parts, 4, voice coil, 5, diaphragm, 6, reinforcement, 7, central magnet, 8, side magnet, 9, center Huasi, 10, edge Huasi.
  • the receiver of the present invention comprises an outer casing, in particular, the outer casing comprises a first casing 1 and a second casing which cooperate with each other from top to bottom. 2 and the third casing 3, the three together form a cavity for accommodating the magnetic circuit system and the vibration system.
  • the third housing 3 is a one-piece structure, and includes a magnetic conductive member 31 and a plastic member 32 integrally molded with the magnetic conductive member 31.
  • the magnetic conductive member 31 is bonded and fixed with a magnet and a washer.
  • the magnetic conductive member 31, the magnet and the huasi together constitute a magnetic circuit system, and the plastic member 32 functions similarly to the lower-shell structure of the prior art, that is, the third housing 3 passes through the plastic member 32 and the second member.
  • the housing 2 is ultrasonically welded and fixed; the vibration system includes a diaphragm 5 and a voice coil 4 bonded to the diaphragm 5 (the voice coil 4 is specifically bonded and fixed to the lower side of the diaphragm 5), in order to further enhance the product at a high position.
  • the center of the diaphragm is also combined with a reinforcing portion 6.
  • the magnet specifically includes the center of the magnetic conductive member 31.
  • a certain distance is set between the central magnet 7 and the side magnet 8, and a magnetic gap is formed, and the lower end portion of the voice coil 4 is accommodated in the magnetic gap.
  • the receiver Since the receiver is provided with an electrical connection structure connecting internal and external circuits (such as a spring shown by reference numeral 11, that is, for connecting an external circuit), the current signal of the external circuit is transmitted to the voice coil 4 through the electrical connection structure, and the voice coil 4 is in the electromagnetic field. Under the action of the reciprocating cutting magnetic field movement, the diaphragm 5 connected thereto is vibrated to radiate sound waves to the outside, thereby completing the conversion between the electro-acoustic energy.
  • an electrical connection structure connecting internal and external circuits (such as a spring shown by reference numeral 11, that is, for connecting an external circuit)
  • the existing magnetic conductive member and the split structure of the lower cover of the receiver are improved into one-piece injection molding, and respectively injection-molded by the magnetic conductive member 31 and the plastic member 32 to form an integrated third shell.
  • Body 3 in the assembly process of the product, it is not necessary to divide the lower shell and the magnetic conductive member into two steps, but can be completed in one step, thereby simplifying the production process of the product and saving the production cost.
  • the third housing 3 is a rectangular frame structure including a bottom wall 301 and two side walls 302, and the magnetic conductive member 31 as a part of the third housing 3 includes a base portion. 311 and two side portions 312 extending from a pair of opposite sides of the base portion 311 perpendicularly to the second housing 2, the plastic member 32 is located at the four corner regions of the third housing 3, which can also be understood as The plastic member 32 is coupled between the base portion 311 of the magnetic conductive member 31 and the side portion 312.
  • the plastic member 32 and the base portion 311 of the magnetic conductive member 31 constitute the bottom wall 301 of the third housing 3, and the side portion 312 of the magnetic conductive member 31.
  • the side wall 302 of the third casing 3 is formed.
  • the diaphragm 5 divides the receiver into two cavities, a front cavity and a rear cavity. Since the diaphragm 5 is fixed on the second casing 2, the diaphragm 5 and the second casing 2 are A space is formed with the space of the first casing 1, and the space of the diaphragm 5, the second casing 2 and the third casing 3 forms a rear cavity. That is to say, the technical solution makes the lower case of the back cavity case and the magnetic conductive member (the basin frame) in the prior art into an integrated structure.
  • the magnetic conductive member 32 is made of stainless steel.
  • the diaphragm 5 of the present embodiment is a silicone film, which is integrally molded with the second casing 2, and the silicone material itself has good flexibility, temperature resistance and mechanical properties.
  • the embodiment adopts a silica gel membrane to effectively adjust the compliantness of the diaphragm ring portion and improve the listening sound yield of the product.
  • the elasticity is strong, and the vibration amplitude of the diaphragm can be increased to a certain extent, and at the same time, at work. It is not easy to be deformed, and it can overcome the softening phenomenon of the part of the folding ring due to temperature change, and improve the reliability of product reliability.
  • the reinforcing portion 6 is coupled to the lower side of the diaphragm 5, and the reinforcing portion 6 has a concave structure, which is advantageous for reducing the high frequency performance of the product and reducing the product. thickness.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Manufacturing & Machinery (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Headphones And Earphones (AREA)

Abstract

本发明公开了一种受话器，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、第二壳体和第三壳体，第三壳体为一体式结构，包括导磁件以及与导磁件一体注塑成型的塑胶件，导磁件上粘结固定有磁铁和华司，导磁件、磁铁以及华司共同构成受话器的磁路系统，第三壳体通过塑胶件与第二壳体超声熔接固定。本发明的受话器，可以实现产品后腔壳体的一步式组装，简化产品的生产工艺，节约生产时间，进而降低产品的生产成本。

Description

受话器 技术领域
本发明涉及电声领域，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，一般包括磁路系统、振动系统以及收容磁路系统和振动系统的外部壳体，外部壳体通常又包括相互配合的上壳、中壳和下壳，振动系统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，而下壳与磁路系统的盆架则成为了受话器产品主要的后腔壳体。
目前的传统技术方案中，下壳通常为塑胶壳体，产品组配过程中，需要首先通过超声熔接将塑胶下壳固定在中、上壳组件上，然后将盆架用胶水粘结在中、下壳组件上，不难看出，当下壳与盆架为两个分体式的部件时，产品组装过程不能一次装配完毕，而是需要两个步骤完成组装，难免会增加产品生产过程中的工序和工时，导致产品生产成本上升。鉴于此，需要提供一种新型的结构设计，使后腔壳体一体化，进而实现一步到位式组装。
发明内容
本发明所要解决的技术问题是：提供一种受话器，通过对盆架与下壳结构的改进，使其能够一次性完成后腔壳体的组配，简化生产工艺，节省工时，节约生产成本。
为了实现上述目的，本发明采用以下技术方案：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，其中，所述第三壳体为一体式结构，包括导磁件以及与所述导磁件一体注塑成型的塑胶件；所述导磁件上粘结固定有磁铁和华司；所述导磁件、所述磁铁以 及所述华司共同构成所述受话器的磁路系统；所述第三壳体通过所述塑胶件与所述第二壳体超声熔接固定。
作为一种改进，所述第三壳体为矩形的框体结构，所述塑胶件位于所述第三壳体的四个角部区域。
作为一种改进，所述第三壳体包括底壁和两个侧壁；所述第三壳体的导磁件包括基部和自所述基部的一组对边垂直向靠近所述第二壳体的方向延伸而成的两个侧部；所述塑胶件结合于所述基部和所述侧部之间，与所述基部构成所述第三壳体的底壁，与所述侧部构成所述第三壳体的侧壁。
作为一种改进，还包括振动系统；所述振动系统包括振膜；所述振膜将所述受话器分割成前腔和后腔两个腔体；所述振膜、所述第二壳体与所述第一壳体的空间形成所述前腔；所述振膜、所述第二壳体与所述第三壳体的空间形成所述后腔。
作为一种改进，所述导磁件为不锈钢材质。
作为一种改进，所述振动系统固定于所述第二壳体上；所述振膜为硅胶膜，与所述第二壳体一体注塑成型。
作为一种改进，所述振膜的下侧粘结有音圈；所述振膜的下侧还结合有补强部；所述补强部为下凹的结构。
作为一种改进，所述磁铁包括粘结于所述导磁件表面中心位置的中心磁铁以及设置于所述中心磁铁对侧的一组边磁铁；所述华司包括覆盖于所述中心磁铁表面的中心华司以及覆盖于所述边磁铁表面的边华司。
作为一种改进，所述第一壳体上结合有连接外部电路的弹簧。
相较于现有技术而言，本发明的受话器，其第三壳体设计为一体式结构，包括导磁件以及与导磁件一体注塑成型的塑胶件，其中，导磁件上固定磁铁和华司，共同构成磁路系统，而第三壳体则通过塑胶件与第二壳体超声熔接固定，也就是说，本技术方案中，磁路系统的导磁件与传统受话器结构中的下壳注塑为一个组件，可以实现一步式组装，简化了产品的生产工艺，节约生产时间， 进而降低了产品的生产成本。
附图说明
图1为本发明受话器结构的爆炸图；
图2为本发明受话器第三壳体结构的立体图；
图3为本发明受话器结构的背面外观示意图；
图4为本发明受话器结构的正面外观示意图；
图5为本发明受话器结构的剖视图；
其中的附图标记包括：1、第一壳体，11、弹簧，2、第二壳体，3、第三壳体，301、底壁，302、侧壁，31、导磁件，311、基部，312、侧部，32、塑胶件，4、音圈，5、振膜，6、补强部，7、中心磁铁，8、边磁铁，9、中心华司，10、边华司。
具体实施方式
下面结合附图，详细说明本发明内容：
实施例：
参阅图1、图3、图4和图5共同所示，本发明的受话器包括外部壳体，具体而言，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以及第三壳体3，三者共同形成收容磁路系统和振动系统的空腔。
本发明的受话器，第三壳体3为一体式结构，包括导磁件31以及与导磁件31一体注塑成型的塑胶件32，其中，导磁件31上粘结固定有磁铁和华司，导磁件31、磁铁和华司三者共同构成磁路系统，而塑胶件32则发挥着与现有技术中下壳结构相类似的作用，即第三壳体3通过塑胶件32与第二壳体2超声熔接固定；振动系统则包括振膜5以及与振膜5粘结固定的音圈4(音圈4具体粘结固定于振膜5的下侧位置)，为了进一步增强产品在高频处的声学性能，振膜的中心位置还结合有补强部6。
参阅图1和图5所示，本实施方式中，磁铁具体包括位于导磁件31的中心 位置的中心磁铁7以及沿中心磁铁7的一组对边相对设置的两块边磁铁8，中磁铁7的表面覆盖有中心华司9，同样的，两块边磁铁的表面覆盖有边华司10。其中，中心磁铁7与边磁铁8之间设置一定的距离，形成磁间隙，音圈4的下端部容置于该磁间隙中。由于受话器上设置有连接内外部电路的电连接结构(如标号11所示的弹簧，即用来连接外部电路)，外部电路的电流信号通过电连接结构传递至音圈4，音圈4在电磁场的作用下做往复切割磁力线的运动，带动与之相连接的振膜5振动，从而向外界辐射声波，由此完成电声能之间的转化。
通过上述技术方案，将现有的导磁件与受话器下壳的分体式结构改进为二者一体注塑成型，分别以导磁件31和塑胶件32的形态注塑结合，形成一体式的第三壳体3，在产品的组配过程中，不需要分为两个步骤分别组配下壳和导磁件，而是可以一步式完成，从而简化了产品的生产工艺，节省了生产成本。
具体而言，参阅图2所示，第三壳体3为矩形的框体结构，包括底壁301和两个侧壁302，而作为第三壳体3的一部分的导磁件31则包括基部311和自基部311的一组对边垂直向靠近第二壳体2的方向延伸而成的两个侧部312，塑胶件32位于第三壳体3的四个角部区域，也可以理解为塑胶件32结合于导磁件31的基部311和侧部312之间，塑胶件32与导磁件31的基部311构成第三壳体3的底壁301，与导磁件31的侧部312构成第三壳体3的侧壁302。
优选的，对于受话器整体而言，振膜5将受话器分割成前腔和后腔两个腔体，由于振膜5固定于第二壳体2上，因此，振膜5、第二壳体2与第一壳体1的空间形成前腔，振膜5、第二壳体2与第三壳体3的空间形成后腔。也就是说，本技术方案使得现有技术中作为后腔壳体的下壳与导磁件(盆架)成为一体式结构。
优选的，导磁件32为不锈钢材质。
优选的，参阅图5所示，本实施方式的振膜5为硅胶膜，与第二壳体2一体注塑成型，由于硅胶材料本身具有较好的柔顺型、耐温性以及机械性能，故本实施方式采用硅胶膜一方面可有效调节振膜折环部分的顺性，提高产品听音良率，另一方面弹性较强，可在一定程度上增大振膜的振动幅度，同时在工作 中不易变形，能够克服折环部分因温度变化而出现的软化现象，提高产品可靠性良率。
优选的，如图5所示，本实施方式中，补强部6结合于振膜5的下侧，补强部6为下凹的结构，在增强产品高频性能的同时有利于降低产品的厚度。
以上仅为本发明实施案例而已，并不用于限制本发明，但凡本领域普通技术人员根据本发明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，其特征在于：所述第三壳体为一体式结构，包括导磁件以及与所述导磁件一体注塑成型的塑胶件；所述导磁件上粘结固定有磁铁和华司；所述导磁件、所述磁铁以及所述华司共同构成所述受话器的磁路系统；所述第三壳体通过所述塑胶件与所述第二壳体超声熔接固定。
  2. 根据权利要求1所述的受话器，其特征在于：所述第三壳体为矩形的框体结构，所述塑胶件位于所述第三壳体的四个角部区域。
  3. 根据权利要求2所述的受话器，其特征在于：所述第三壳体包括底壁和两个侧壁；所述第三壳体的导磁件包括基部和自所述基部的一组对边垂直向靠近所述第二壳体的方向延伸而成的两个侧部；所述塑胶件结合于所述基部和所述侧部之间，与所述基部构成所述第三壳体的底壁，与所述侧部构成所述第三壳体的侧壁。
  4. 根据权利要求1所述的受话器，其特征在于：还包括振动系统；所述振动系统包括振膜；所述振膜将所述受话器分割成前腔和后腔两个腔体；所述振膜、所述第二壳体与所述第一壳体的空间形成所述前腔；所述振膜、所述第二壳体与所述第三壳体的空间形成所述后腔。
  5. 根据权利要求1所述的受话器，其特征在于：所述导磁件为不锈钢材质。
  6. 根据权利要求4所述的受话器，其特征在于：所述振动系统固定于所述第二壳体上；所述振膜为硅胶膜，与所述第二壳体一体注塑成型。
  7. 根据权利要求6所述的受话器，其特征在于：所述振膜的下侧粘结有音圈；所述振膜的下侧还结合有补强部；所述补强部为下凹的结构。
  8. 根据权利要求1所述的受话器，其特征在于：所述磁铁包括粘结于所述导磁件表面中心位置的中心磁铁以及设置于所述中心磁铁对侧的一组边磁铁；所述华司包括覆盖于所述中心磁铁表面的中心华司以及覆盖于所述边磁铁表面的边华司。
  9. 根据权利要求1所述的受话器，其特征在于：所述第一壳体上结合有连接外部电路的弹簧。
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