WO2016192316A1 - 振动发声装置 - Google Patents

振动发声装置 Download PDF

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Publication number
WO2016192316A1
WO2016192316A1 PCT/CN2015/094679 CN2015094679W WO2016192316A1 WO 2016192316 A1 WO2016192316 A1 WO 2016192316A1 CN 2015094679 W CN2015094679 W CN 2015094679W WO 2016192316 A1 WO2016192316 A1 WO 2016192316A1
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WO
WIPO (PCT)
Prior art keywords
fixing portion
mass
voice coil
vibration
sounding device
Prior art date
Application number
PCT/CN2015/094679
Other languages
English (en)
French (fr)
Inventor
朱跃光
孙洪超
石华
Original Assignee
歌尔声学股份有限公司
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.)
Filing date
Publication date
Application filed by 歌尔声学股份有限公司 filed Critical 歌尔声学股份有限公司
Priority to US15/579,219 priority Critical patent/US10129655B2/en
Publication of WO2016192316A1 publication Critical patent/WO2016192316A1/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
    • 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
    • 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
    • H04R2400/07—Suspension between moving magnetic core and housing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • 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

Definitions

  • the invention relates to the field of electroacoustics, and in particular to a vibrating sounding device.
  • the vibration speaker is a multifunctional acoustic device that has the function of a vibration motor in addition to the vibration sounding function of the ordinary speaker.
  • the vibration speaker can save the internal space of the portable electronic terminal, simplify the assembly process of the portable electronic terminal, and reduce the cost of the portable electronic terminal, so the vibration speaker is more and more widely used in the field of portable electronic terminals.
  • the vibration sounding device of the prior structure comprises a vibration system and a magnetic circuit system; the vibration system comprises a diaphragm and a cylindrical voice coil integrally combined with the diaphragm; the magnetic circuit system comprises a magnet and a magnetic gap, and the cylindrical voice coil is disposed in the magnetic gap Inside, when the vibrating speaker is working, the cylindrical voice coil is driven by the Lorentz force to vibrate in the vertical direction, and the magnetic circuit system is subjected to a reaction force to resonate in the vertical direction.
  • the vibration speaker of the structure is limited by the volume and vibration space of the cylindrical voice coil, and it is also required to provide the mass portion in the vertical direction in combination with the magnetic circuit system, and the thickness in the vertical direction is thickened, which cannot satisfy the thin shape of the product. Demand.
  • the existing vibration sounding device cannot meet the development trend of thinning and miniaturization; and the internal components of the vibration sounding device of the prior structure are complicated, and the assembly difficulty is always Difficulties in the industry.
  • the technical problem to be solved by the present invention is to provide a vibration sounding device with high thin design, good performance and simple assembly.
  • the vibrating sounder of the present invention adopts the following technical solutions:
  • a vibration sounding device includes a casing, a vibration system and a magnetic circuit system housed in the casing; the casing includes upper and lower end faces and a side surface connecting the upper and lower end faces, and a side of the casing is provided for sound emission
  • the sounding system includes a diaphragm, a voice coil and a transmission structure, the diaphragm is disposed corresponding to the sound hole, and a plane of the diaphragm is parallel to a side of the sound hole;
  • the voice coil is a flat structure, the plane of the voice coil is perpendicular to the plane of the diaphragm;
  • the transmission structure connects the diaphragm with the voice coil;
  • the magnetic circuit system includes a magnet, and the magnet The voice coils are arranged in parallel;
  • the vibration sounding device further includes a mass and a spring piece, the magnet is fixedly coupled with the mass, the elastic piece suspending the mass in the outer casing; the elastic piece comprises a first fixing portion, a
  • the connecting portion is an elastic structure, and the mass suspended in the outer casing and the magnet vibrate in an elastic direction of the elastic structure.
  • the elastic piece has a strip shape, and two ends of the strip elastic piece are provided with two parts of the first fixing portion, and the second fixing portion is equal to the distance between the two parts of the first fixing part.
  • the first fixing portion and the second fixing portion are disposed on two parallel planes; the connecting portion of the elastic structure is two portions, and the second fixing portion and the two portions of the first fixing portion are respectively respectively connection.
  • the vibration sounding device includes two the elastic pieces, and the two elastic pieces are respectively disposed at two ends of the mass; two of the elastic pieces are symmetrically disposed with respect to the mass.
  • the housing is provided with a connecting piece corresponding to the elastic piece, and the first fixing portion is fixedly coupled with the connecting piece.
  • the connecting piece is integrally molded with the outer casing.
  • the magnetic circuit system is disposed on one side of the voice coil;
  • the mass block is provided with a positioning groove corresponding to the magnet fixing position, and the magnet is disposed in the positioning groove.
  • the positioning groove penetrates the mass, and the mass is disposed away from the voice coil side with a magnetic conductive plate, and the magnet is fixed to the magnetic conductive plate away from the voice coil side.
  • the magnets are two pieces, and the mass blocks are provided with positioning grooves corresponding to the two magnets.
  • the flat structure voice coil is in the shape of a racetrack, and two straight sides of the racetrack-shaped voice coil are disposed corresponding to the two magnets; the two magnets have opposite polarization directions.
  • the vibration sounding device of the invention has the sound hole disposed on the side of the outer casing of the sounding device, avoiding the thickness requirement of the front sound hole to the vertical direction of the external portable electronic terminal, and avoiding the sound of the electronic terminal when the thickness of the vertical terminal is insufficient.
  • the blockage of the hole ensures the sounding effect of the vibration sounding device;
  • the diaphragm of the vibration system corresponds to the sound hole setting, that is, the plane of the diaphragm is parallel to the side where the sound hole is located, the voice coil is a flat structure, the voice coil plane and the diaphragm
  • the plane is vertical, which effectively reduces the occupation of the thickness of the vibrating sound device by the voice coil, and changes the vibration direction of the voice coil when the vibrating sound device works, so that the voice coil vibrates in the horizontal direction, and the diaphragm vibrates and sounds through the transmission structure;
  • the voice coil plane is parallel, the magnet is fixedly integrated with the mass, and is suspended in the casing.
  • the vibration sounding device of the present invention since the voice coil has a flat structure, in the vibration direction of the voice coil, the external portable electronic terminal has a small size restriction on the vibration sounding device, the vibration direction of the voice coil avoids the thickness direction, and the magnet and the mass are integrated. The vibration direction also avoids the thickness direction, which is beneficial to the thin design of the product. At the same time, the vibration space can be increased and the product performance can be improved. Moreover, the mass is fixed by the elastic piece and the outer casing, and the elastic structure is simple to assemble and the process difficulty is low. Therefore, the vibration sounding device of the present invention has the advantages of high thin design, good performance, and simple assembly.
  • Figure 1 is a perspective view of a specific embodiment of a vibrating sounding device of the present invention
  • Figure 2 is an exploded view of the vibration sounding device shown in Figure 1;
  • Figure 3 is a cross-sectional view of the vibration sounding device A-A of Figure 1;
  • Figure 4 is a cross-sectional view of the vibration sounding device of Figure 1 taken along the line B-B;
  • Figure 5 is a schematic view showing the assembly of the magnetic circuit system of the vibration sounding device shown in Figure 1;
  • Figure 6 is a schematic view showing the assembly of the vibration system of the vibration sounding device shown in Figure 1;
  • FIG. 7 is a schematic structural view of a spring piece in a specific embodiment of the vibration sounding device of the present invention.
  • the vibration sounding device of the present invention comprises a casing, a vibration system and a magnetic circuit system; the casing comprises a first casing 11, a second casing 12 and sidewalls of the first casing 11 and the second casing 12.
  • a fixed side cover 13; a vibration system and a magnetic circuit system are disposed in a cavity surrounded by the first housing 11, the second housing 12, and the side cover 13; and the side cover 13 is provided with an acoustic hole for sound emission.
  • the vibration system includes a diaphragm 3, a voice coil 2, and a transmission structure 4; the diaphragm 3 is disposed corresponding to the side cover 13 where the sound hole is located, that is, the diaphragm 3 is disposed adjacent to the side cover 13.
  • the plane of the diaphragm 3 is parallel to the plane of the side cover 13; the voice coil 2 is a flat structure, and the plane of the voice coil 2 is disposed perpendicular to the plane in which the diaphragm 3 is located; the vibration sounding device of the embodiment, the voice coil 2 and the diaphragm 3 connected transmission structure is the transmission arm 4, as shown in Figure 6, one end of the transmission arm 4 is fixed to the diaphragm 3, the other end is fixed by the elastic piece 5 and the second housing 12, the transmission arm 4 transmits the vibration of the voice coil 2 to the vibration
  • the film 3 adjusts the rigidity of the position where the diaphragm 3 and the transmission arm 4 are coupled, and adjusts the acoustic performance of the product. As shown in FIGS.
  • the diaphragm 3 is further provided with a reinforcing portion 3a, and the reinforcing portion 3a is also provided.
  • the magnetic circuit system includes a magnet 6, the magnet 6 is disposed corresponding to the voice coil 2, and the plane of the magnet 6 is parallel to the plane of the voice coil 2; the vibration sounding device of the present invention further includes a mass 7.
  • the magnet 6 is fixed to the mass 7 and the mass 7 is suspended in the casing by the elastic piece 9.
  • the integral structure of the mass 7 and the magnet 6 can reciprocally vibrate in the direction of the magnet force in the casing.
  • the vibration sounding device of the invention is driven by the outside world
  • the voice coil 2 When the current enters the voice coil 2, the voice coil 2 is placed in the magnetic field of the magnet 6, and the current is changed in the voice coil 2 disposed in the magnetic field, so that the voice coil 2 is subjected to Lorentz force and vibrates along the plane of the voice coil.
  • the vibration drives the transmission arm 4 to vibrate, thereby transmitting the vibration to the diaphragm 3, and the diaphragm 3 vibrates and sounds; when the voice coil 2 is subjected to the magnetic field force, the magnet 6 is also subjected to the opposite force, and the magnet 6 vibrates when the magnet 6 When the frequency of the received force is the same as the resonance frequency of the integrated structure of the magnet 6 and the mass 7, the structure of the magnet 6 and the mass 7 is substantially vibrated, and the vibration sounding device is in a vibrating state.
  • the vibration sounding device of the present invention since the voice coil has a flat structure, in the vibration direction of the voice coil, the size limit of the vibration sounding device by the external portable electronic terminal is small, and the voice coil can obtain a large vibration space and increase the amplitude. Improve the performance of the vibration sounding device.
  • the vibration sounding device of the invention functions as a vibration function, the vibration direction of the integral structure of the magnet and the mass block is also in the horizontal direction, thereby avoiding the occupation of the thickness, further reducing the thickness of the product, and at the same time, the size limitation in the vibration direction is small, and the vibration can be further improved. Functional performance.
  • the mass 7 is fixed to the second casing 12 by the elastic piece 9, and the mass 7 is suspended in the casing.
  • the elastic piece 9 includes the first fixing portion. 91.
  • the first fixing portion 91 is fixed to the second housing 12, and the second fixing portion 92 is The mass 7 is fixed.
  • the design of the elastic piece 9 can fix the mass 7 and the second outer casing 12 by a simple structure, and suspend the integral structure of the mass and the magnet in the outer casing, and the assembly is simple, which simplifies the positioning design difficulty between the mass and the outer casing.
  • the process difficulty of the vibration sounding device of the invention is reduced, and the vibration sounding device of the invention has the advantages of simple assembly.
  • the connecting portion 93 is an elastic structure, which can vibrate the mass and the magnet fixing structure in the elastic direction of the connecting portion 93 of the elastic structure, thereby improving the resilience of the mass and the magnet integrated structure when vibrating. Vibration performance of vibration sounding devices.
  • the elastic piece 9 of the present embodiment has a strip shape and includes two parts of the first fixing portion 91.
  • the second fixing portion 92 is equidistant from the two portions of the first fixing portion 91, and the first fixing portion is 91 and the second fixing portion 92 are located on two parallel planes, so that the first fixing portion 91 is fixed to the outer casing, the second fixing portion 92 is fixed to the mass, and the connecting portion 93 of the elastic structure is also two parts, and the two portions are A fixing portion 91 is respectively connected to the second fixing portion 92. Since the distance between the second fixing portion 92 and the two portions of the first fixing portion 91 is equal, the connecting portions of the two-part elastic structure have the same length and the elastic force is equal, and two vibrations can be ensured. The resilience of the directions is equal, which is beneficial to improve the vibration performance of the vibrating sound device.
  • the two-part first fixing portion 91 can improve the strength of the elastic piece and the outer casing, and improve the performance. At the same time, the two-part first fixing portion 91 is combined with the two-part elastic connecting portion to ensure the two directions of the mass and the magnet integral structure vibrating. The elastic force is equal, which further improves the vibration performance of the vibration sounding device.
  • the elastic piece 9 is two, and two elastic pieces 9 are respectively disposed at two ends of the mass 7, and the two elastic pieces 9 are symmetrically arranged with respect to the mass 7. .
  • the structure can effectively suspend the mass 7 inside the casing, and at the same time limit the mass 7 to prevent polarization during vibration and improve the vibration performance of the vibration sounding device.
  • the second outer casing 12 is provided with a connecting piece 12a corresponding to the mounting position of the elastic piece 9, and the connecting piece 12a is fixedly coupled to the first fixing portion 91 of the elastic piece 9.
  • the connecting piece 12a may be a metal piece, and is fixedly coupled to the first fixing portion of the elastic piece 9 to improve the fixing strength of the outer casing and the elastic piece, thereby improving product reliability.
  • the connecting piece 12a may be integrally molded with the second outer casing 12.
  • the magnet 7 is provided with a positioning groove corresponding to the magnet 6, and the magnet 6 is disposed in the positioning groove of the mass 7 in order to increase the volume of the magnet 6.
  • the positioning groove penetrates the mass block 7.
  • the magnetic block 7 is provided with a magnetic conductive plate 8 away from the voice coil side.
  • the magnetic conductive plate 8 fixes the magnet, which is beneficial to adjusting the magnetic flux distribution inside the vibration sounding device, and is beneficial to improving product performance.
  • the magnet 6 is two pieces, and the two magnets 6 are respectively placed at two straight sides of the flat track-shaped voice coil 2, and the two magnets 6 are charged.
  • the magnetic direction is opposite to ensure the voice coil
  • the two straight sides of the force direction of 2 are the same, and the two magnets 6 increase the magnetic field strength, which is beneficial to improve product performance.
  • a steel sheet 11a may be disposed at a position corresponding to the voice coil and the magnetic circuit system of the first casing 11.
  • the steel sheet 11a can reduce the thickness while increasing the strength of the position, and increase the internal space of the position, which is beneficial to increase the thickness of the magnetic circuit system and the voice coil, and improve product performance; at the same time, as a preferred solution, the product performance is ensured.
  • the magnetic circuit system of the vibration sounding device of the present embodiment is disposed only on one side of the voice coil 2, and further, can be disposed on a side away from the steel sheet 11a to minimize the thickness of the product and meet the application requirements. .
  • the sound hole is disposed on the side wall perpendicular to the thickness direction
  • the diaphragm is parallel to the plane of the sound hole
  • the flat voice coil is perpendicular to the diaphragm
  • the magnet is arranged in parallel with the voice coil.
  • the direction of vibration avoids the thickness direction
  • the vibration direction of the integral structure of the magnet and the mass avoids the direction of the thickness, which is advantageous for the thin design of the product, at the same time, the vibration space can be increased, the performance of the product can be improved, and the mass passes
  • the shrapnel is fixed to the outer casing, and the shrapnel structure is simple to assemble and the process is difficult. Therefore, the vibration sounding device of the present invention has the advantages of high thin design, good performance, and simple assembly.

Abstract

本发明公开了一种振动发声装置，该振动发声装置的出声孔设置于侧面，振膜与出声孔位置对应，扁平音圈与振膜垂直，磁铁与音圈平行，音圈的振动方向避开了厚度方向，磁铁、质量块的振动方向也避开了厚度方向，质量块通过弹片与外壳固定结合，有利于降低产品厚度，提高产品性能，简化产品生产工艺。因此，本发明振动发声装置具有薄型化设计高，性能好，装配简单的优点。

Description

振动发声装置 技术领域
本发明涉及电声领域，尤其涉及一种振动发声装置。
背景技术
振动扬声器是一种多功能声学器件，其除了实现普通扬声器的振动发声功能外，还具有振动马达的功能。振动扬声器可以节省便携式电子终端的内部空间，简化便携式电子终端的组装工艺，降低便携式电子终端的成本，所以振动扬声器在便携式电子终端领域得到了越来越广泛的应用。
现有结构的振动发声装置，包括振动系统和磁路系统；振动系统包括振膜、与振膜一体结合的筒状音圈；磁路系统包括磁铁和磁间隙，筒状音圈设置于磁间隙内，振动扬声器工作时，筒状音圈受到洛仑兹力带动振膜在竖直方向振动发声，并且磁路系统受到反作用力，在竖直方向产生共振。该结构的振动扬声器，由于筒状音圈的体积及振动空间所限，并且还需要在竖直方向上设置质量部与磁路系统结合，加厚了竖直方向的厚度，无法满足产品的薄型化需求。随着便携式电子终端薄型化、微型化设计的提升，现有的振动发声装置无法满足薄型化、微型化的发展趋势；并且，现有结构的振动发声装置内部构件复杂，装配难度大也一直是业界关注的难点问题。
因此，有必要提出一种改进，以克服现有技术振动发声装置的缺陷。
发明内容
本发明所要解决的技术问题是提供一种薄型化设计高，性能好、装配简单的振动发声装置。
为了实现上述目的，本发明振动发声器采用以下技术方案：
一种振动发声装置，包括外壳、收容于所述外壳内的振动系统和磁路系统；所述外壳包括上下两个端面以及连接所述上下端面的侧面，所述外壳的侧面设置有供声音出射的出声孔；所述振动系统包括振膜、音圈和传动结构，所述振膜与所述出声孔对应设置，所述振膜所在平面与所述出声孔所在侧面平行；所述音圈为扁平结构，所述音圈所在平面与所述振膜所在平面垂直；所述传动结构将所述振膜与所述音圈连接结合；所述磁路系统包括磁铁，所述磁铁与所述音圈平行设置；所述振动发声装置还包括质量块和弹片，所述磁铁与所述质量块固定结合，所述弹片将所述质量块悬设于所述外壳内；所述弹片包括第一固定部、第二固定部以及连接部；所述第一固定部与所述外壳固定结合，所述第二固定部与所述质量块固定结合，所述连接部连接所述第一固定部与所述第二固定部。
作为一种优选的技术方案，所述连接部为弹性结构，悬设于所述外壳内的所述质量块和所述磁铁按所述弹性结构的弹性方向振动。
作为一种优选的技术方案，所述弹片为条形，所述条形弹片的两端设置有两部分第一固定部，所述第二固定部与所述两部分第一固定部的距离相等；所述第一固定部与所述第二固定部设置于两个平行平面上；所述弹性结构的连接部分为两部分，分别将所述第二固定部与所述两部分第一固定部连接。
作为以上方案的优选方案，所述振动发声装置包括两个所述弹片，所述两个弹片分别设置于所述质量块的两端；两个所述弹片关于所述质量块对称设置。
作为另一种优选方案，所述外壳对应所述弹片设置有连接片，所述第一固定部与所述连接片固定结合。作为进一步优选方案，所述连接片与所述外壳一体注塑结合。
作为再一种优选方案，所述磁路系统设置于所述音圈的一侧；所 述质量块对应所述磁铁固定位置设置定位槽，所述磁铁设置于所述定位槽内。作为进一步优选方案，所述定位槽贯通所述质量块，所述质量块远离所述音圈一侧设置有导磁板，所述磁铁远离所述音圈一侧与所述导磁板固定。作为另一种进一步的优选方案，所述磁铁为两块，所述质量块对应所述两块磁铁均设置有定位槽。作为更进一步的优选，所述扁平结构音圈为跑道形，所述跑道形音圈的两条直边对应所述两块磁铁设置；所述两块磁铁的极化方向相反。
本发明的振动发声装置，将出声孔设置于发声装置的外壳的侧面，避免了正面出声孔对外部便携式电子终端竖直方向的厚度要求，避免电子终端竖直方向厚度不足时对出声孔的堵塞，保证了振动发声装置出声效果；振动系统的振膜对应出声孔设置，也即振膜平面与出声孔所在的侧面平行，音圈为扁平结构，音圈平面与振膜平面垂直，有效降低音圈对振动发声装置厚度的占用，并且改变音圈在振动发声装置工作时的振动方向，使音圈在水平方向振动，通过传动结构带动振膜振动发声；磁铁所在平面与音圈平面平行，磁铁与质量块固定一体，并悬设于壳体内，当音圈通电时，磁铁受到音圈给予的反作用力，在一定频率内，磁铁与质量块一体的结构共振，在磁铁所在平面作往复振动，振动发声装置起到振动功能。本发明振动发声装置，由于音圈为扁平结构，在音圈的振动方向，外部便携式电子终端对振动发声装置的尺寸限制小，音圈的振动方向避开了厚度方向，磁铁与质量块一体结构的振动方向也避开了厚度的方向，有利于产品的薄型化设计，同时，可以增大振动空间，提高产品性能；并且，质量块通过弹片与外壳固定，弹片结构装配简单，工艺难度低。因此，本发明振动发声装置具有薄型化设计高，性能好，装配简单的优点。
附图说明
图1为本发明振动发声装置具体实施方式立体图；
图2为图1所示振动发声装置分解图；
图3为图1所示振动发声装置A-A方向剖视图；
图4为图1所示振动发声装置B-B方向剖视图；
图5为图1所示振动发声装置磁路系统装配示意图；
图6为图1所示振动发声装置振动系统装配示意图；
图7为本发明振动发声装置具体实施方式中弹片结构示意图。
具体实施方式
下面结合附图，详细说明本发明内容：
如图2所示，本发明振动发声装置，包括外壳、振动系统及磁路系统；外壳包括第一壳体11、第二壳体12以及与第一壳体11、第二壳体12侧壁固定的侧盖13；第一壳体11、第二壳体12以及侧盖13围成的空腔内设置有振动系统和磁路系统；侧盖13上设置有供声音出射的出声孔。如图2和图3所示，振动系统包括振膜3、音圈2以及传动结构4；振膜3与出声孔所在的侧盖13对应设置，也即振膜3靠近侧盖13设置，振膜3所在平面与侧盖13所在平面平行；音圈2为扁平结构，音圈2所在的平面与振膜3所在的平面垂直设置；本实施例的振动发声装置，音圈2与振膜3连接的传动结构为传动臂4，如图6所示，传动臂4一端与振膜3固定，另一端通过弹片5与第二壳体12固定，传动臂4将音圈2振动传递至振膜3，为了提高振膜3与传动臂4结合位置的刚性，调整产品的声学性能，如图2和图3所示，振膜3上还设置有补强部3a，补强部3a也设置于振膜3的中心平面部上。如图2、图3和图4所示，磁路系统包括磁铁6，磁铁6对应音圈2设置，磁铁6所在的平面与音圈2所在的平面平行；本发明振动发声装置还包括质量块7，磁铁6与质量块7固定，质量块7通过弹片9悬设于外壳内，质量块7与磁铁6的一体结构可以在外壳内沿磁铁受力方向作往复振动。本发明的振动发声装置，当外界驱动 电流进入到音圈2时，音圈2设置于磁铁6的磁场内，设置于磁场内的音圈2内电流变化，使音圈2受到洛仑兹力而沿音圈所在平面振动，音圈2振动带动传动臂4振动，从而将振动传递至振膜3，振膜3振动发声；当音圈2受到磁场力时，磁铁6也受到反方向的作用力，磁铁6发生振动，当磁铁6受到的力的频率与磁铁6、质量块7一体结构的共振频率相同时，磁铁6与质量块7一体的结构振动明显，振动发声装置处于振动状态。本发明的振动发声装置，由于音圈为扁平结构，在音圈的振动方向，外部便携式电子终端对振动发声装置的尺寸限制小，可以使音圈获得较大的振动空间，增大振幅，从而提升了振动发声装置的性能。同时，本发明振动发声装置起振动功能时，磁铁与质量块一体结构的振动方向也在水平方向，避免了厚度的占用，进一步降低了产品厚度，同时振动方向上尺寸限制小，可以进一步提升振动功能的性能。
如图4和图5所示，本发明振动发声装置，质量块7通过弹片9与第二壳体12固定，质量块7悬设于外壳内如图7所述，弹片9包括第一固定部91、第二固定部92以及连接第一固定部91和第二固定部92的连接部93；如图5所示，第一固定部91与第二壳体12固定，第二固定部92与质量块7固定。弹片9的设计，可以通过简单结构将质量块7与第二外壳12固定，并将质量块与磁铁的一体结构悬设于外壳内，装配简单，简化了质量块与外壳之间定位设计难度，降低了本发明振动发声装置的工艺难度，使本发明振动发声装置具有装配简单的优点。
如图7所示，连接部93为弹性结构，该弹性结构可以使质量块与磁铁固定结构按弹性结构的连接部93的弹性方向振动，提高质量块、磁铁一体结构振动时的回弹力，提高振动发声装置振动性能。如图7所示，本实施例的弹片9为条形，包括两部分第一固定部91，第二固定部92距离两部分第一固定部91的距离相等，并且第一固定部 91与第二固定部92位于两个平行平面上，以便于第一固定部91与外壳固定，第二固定部92与质量块固定；弹性结构的连接部93也为两部分，将两部分第一固定部91分别和第二固定部92连接，由于第二固定部92距离两部分第一固定部91的距离相等，两部分弹性结构的连接部长度相等，弹力相等，可以保证振动时两个方向的回弹力相等，有利于提高振动发声装置振动性能。两部分的第一固定部91可以提高弹片与外壳结合的强度，提高性能，同时，两部分第一固定部91与两部分弹性连接部结合，确保质量块、磁铁一体结构振动时两个方向的弹力相等，进一步提高振动发声装置的振动性能。
如图2、图4及图5所示，本实施例的振动发声装置，弹片9为两个，两个弹片9分别设置于质量块7的两端，两个弹片9关于质量块7对称设置。该结构可以有效将质量块7悬设于外壳内部，同时对质量块7进行限位，防止振动时的偏振，提高振动发声装置的振动性能。
如图2及图4所示，本实施例的振动发声装置，第二外壳12对应弹片9的安装位置设置有连接片12a，连接片12a与弹片9的第一固定部91固定结合。连接片12a可以为金属片，通过与弹片9的第一固定部焊接等方式固定结合，提高外壳与弹片的固定强度，提高产品可靠性。为了降低生产难度，连接片12a可以与第二外壳12一体注塑结合。
如图2、图3、图4所示，本实施例的振动发声装置，质量块7对应磁铁6设置有定位槽，磁铁6设置于质量块7的定位槽内，为了增大磁铁6的体积，该定位槽贯通质量块7，质量块7远离音圈一侧设置有导磁板8，导磁板8固定磁铁，有利于调整振动发声装置内部的磁力线分布，有利于提高产品性能。如图2及图3所示，本实施例的振动发声装置，磁铁6为两块，两块磁铁6分别放置于扁平的跑道形音圈2的两条直边位置，两块磁铁6的充磁方向相反，以保证音圈 2的两条直边受力方向相同，两块磁铁6增大了磁场强度，有利于提高产品性能。
在实际应用中，为了增大振动发声装置内部空间，同时保证外壳的强度，如图2、图3所示，可以在第一壳体11对应音圈和磁路系统的位置设置有钢片11a，钢片11a可以在保证该位置强度的同时，降低厚度，增大该位置的内部空间，有利于增大磁路系统和音圈的厚度，提高产品性能；同时，作为优选方案，在保证产品性能的前提下，本实施例的振动发声装置磁路系统仅设置于音圈2的一侧，更进一步地，可以设置于远离钢片11a的一侧，以最大限度地降低产品厚度，满足应用需要。
本发明的振动发声装置，出声孔设置于与厚度方向垂直的侧壁上，振膜与出声孔所在平面平行、扁平音圈与振膜垂直设置，磁铁与音圈平行设置，音圈的振动方向避开了厚度方向，磁铁与质量块一体结构的振动方向也避开了厚度的方向，有利于产品的薄型化设计，同时，可以增大振动空间，提高产品性能，并且，质量块通过弹片与外壳固定，弹片结构装配简单，工艺难度低。因此，本发明振动发声装置具有薄型化设计高，性能好，装配简单的优点。
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 (10)

  1. 一种振动发声装置，包括外壳、收容于所述外壳内的振动系统和磁路系统，其特征在于：
    所述外壳包括上下两个端面以及连接所述上下端面的侧面，所述外壳的侧面设置有供声音出射的出声孔；
    所述振动系统包括振膜、音圈和传动结构，所述振膜与所述出声孔对应设置，所述振膜所在平面与所述出声孔所在侧面平行；所述音圈为扁平结构，所述音圈所在平面与所述振膜所在平面垂直；所述传动结构将所述振膜与所述音圈连接结合；
    所述磁路系统包括磁铁，所述磁铁与所述音圈平行设置；
    所述振动发声装置还包括质量块和弹片，所述磁铁与所述质量块固定结合，所述弹片将所述质量块悬设于所述外壳内；所述弹片包括第一固定部、第二固定部以及连接部；所述第一固定部与所述外壳固定结合，所述第二固定部与所述质量块固定结合，所述连接部连接所述第一固定部与所述第二固定部。
  2. 根据权利要求1所述的振动发声装置，其特征在于：所述连接部为弹性结构，悬设于所述外壳内的所述质量块和所述磁铁按所述弹性结构的弹性方向振动。
  3. 根据权利要求2所述的振动发声装置，其特征在于：所述弹片为条形，所述条形弹片的两端设置有两部分第一固定部，所述第二固定部与所述两部分第一固定部的距离相等；所述第一固定部与所述第二固定部设置于两个平行平面上；所述弹性结构的连接部分为两部分，分别将所述第二固定部与所述两部分第一固定部连接。
  4. 根据权利要求1至3任一权利要求所述的振动发声装置，其特征在于：所述振动发声装置包括两个所述弹片，所述两个弹片分别设置于所述质量块的两端；两个所述弹片关于所述质量块对称设置。
  5. 根据权利要求1至3任一权利要求所述的振动发声装置，其特征在于：所述外壳对应所述弹片设置有连接片，所述第一固定部与所 述连接片固定结合。
  6. 根据权利要求5所述的振动发声装置，其特征在于：所述连接片与所述外壳一体注塑结合。
  7. 根据权利要求1至3任一权利要求所述的振动发声装置，其特征在于：所述磁路系统设置于所述音圈的一侧；所述质量块对应所述磁铁固定位置设置定位槽，所述磁铁设置于所述定位槽内。
  8. 根据权利要求7所述的振动发声装置，其特征在于：所述定位槽贯通所述质量块，所述质量块远离所述音圈一侧设置有导磁板，所述磁铁远离所述音圈一侧与所述导磁板固定。
  9. 根据权利要求7所述的振动发声装置，其特征在于：所述磁铁为两块，所述质量块对应所述两块磁铁均设置有定位槽。
  10. 根据权利要求9所述的振动发声装置，其特征在于：所述扁平结构音圈为跑道形，所述跑道形音圈的两条直边对应所述两块磁铁设置；所述两块磁铁的极化方向相反。
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