WO2016192315A1 - 振动发声装置 - Google Patents

振动发声装置 Download PDF

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Publication number
WO2016192315A1
WO2016192315A1 PCT/CN2015/094678 CN2015094678W WO2016192315A1 WO 2016192315 A1 WO2016192315 A1 WO 2016192315A1 CN 2015094678 W CN2015094678 W CN 2015094678W WO 2016192315 A1 WO2016192315 A1 WO 2016192315A1
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WO
WIPO (PCT)
Prior art keywords
voice coil
diaphragm
vibration
sounding device
magnet
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PCT/CN2015/094678
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English (en)
French (fr)
Inventor
朱跃光
王超
Original Assignee
歌尔声学股份有限公司
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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
Publication of WO2016192315A1 publication Critical patent/WO2016192315A1/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
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

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. With the improvement of the thinning and miniaturization of portable electronic terminals, the existing vibration sounding devices cannot meet the development trend of thinning and miniaturization.
  • the technical problem to be solved by the present invention is to provide a vibration sounding device with high thin design and good performance.
  • the vibration sounding device of the present invention adopts the following technical solutions:
  • a vibration sounding device characterized by comprising a casing, a vibration system and a magnetic circuit system housed in the casing, and: a sound hole for sound emission is disposed on a side of the casing; the vibration system includes a diaphragm, a voice coil, and a transmission structure, the diaphragm is disposed corresponding to the sound hole, the voice coil is a flat structure, a plane of the voice coil is perpendicular to a plane of the diaphragm, and the voice coil is fixed to the transmission structure.
  • the vibration diaphragm and the voice coil are connected by the transmission structure;
  • the magnetic circuit system includes a magnet, the magnet is disposed corresponding to the voice coil, and a plane of the magnet is parallel to a plane of the voice coil;
  • the vibration The sounding device further includes a mass and a connecting portion, the magnet is fixedly integrated with the mass, and the magnet and the mass integrated structure are suspended in the outer casing through the connecting portion, and the magnet and the mass are integrated
  • the structure can reciprocally vibrate in the plane of the magnet.
  • the connecting portion is a connecting rod, and both ends of the connecting rod are fixed to the outer casing, and the mass is provided with a fixing structure corresponding to the connecting rod, and the connecting rod penetrates the fixing structure The mass may vibrate in the direction in which the connecting rod extends.
  • the mass fixing structure divides the connecting rod into two parts, and the two parts connecting rods are sleeved with springs.
  • the connecting rods are two, and the two connecting rods are symmetrically disposed at two ends of the mass.
  • the transmission structure is a transmission arm, and one end of the transmission arm is fixedly coupled with the diaphragm; the main body position of the transmission arm is fixed with the voice coil.
  • the transmission arm is L-shaped, one a side of the L-shaped connecting arm is parallel to a plane of the diaphragm, and the other b side is perpendicular to the a side, and the a side extends and is fixed.
  • the structure is fixed to the diaphragm; the b-side is fixedly coupled to the voice coil.
  • one end of the b side away from the a side is fixed to the outer casing by a spring piece.
  • the transmission arm has two parts, and the two parts
  • the sub-transmission arms are symmetrically disposed at both ends of the voice coil.
  • the outer casing includes upper and lower ends and side walls disposed around the upper and lower ends, and the sound hole is disposed on the side wall; the diaphragm and the plane of the sound hole are located Parallelly, the diaphragm is vertically disposed in the outer casing; the voice coil is perpendicular to a plane of the diaphragm, the voice coil is horizontally disposed in the outer casing, and the magnetic circuit is disposed on the voice coil One side.
  • the voice coil is in the shape of a racetrack
  • the magnet includes two pieces, and the two magnets are respectively disposed corresponding to two straight sides of the racetrack-shaped voice coil, and the poles of the two magnets The direction is reversed.
  • 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, so that the voice coil can obtain a large vibration space and increase the amplitude, thereby improving The performance of the vibrating sound device. Therefore, the vibration sounding device of the present invention has the advantages of high thin design and good performance.
  • 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;
  • Figure 7 is a schematic view showing the structure of a transmission arm 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
  • the connected transmission structure is the transmission arm 4, and the transmission arm 4 transmits the vibration of the voice coil 2 to the diaphragm 3. As shown in FIG. 2, FIG. 3 and FIG.
  • 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 through the connecting portion 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 present invention when the external driving current enters the voice coil 2, the voice coil 2 is disposed in the magnetic field of the magnet 6, and the current in the voice coil 2 disposed in the magnetic field changes, so that the voice coil 2 is subjected to the Lorentz force.
  • the voice coil 2 While vibrating along the plane of the voice coil, the voice coil 2 vibrates to drive 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 magnetic The iron 6 is also subjected to a force in the opposite direction, and the magnet 6 vibrates.
  • the frequency of the force received by the magnet 6 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.
  • 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. Therefore, the vibration sounding device of the present invention has the advantages of high thin design and good performance.
  • the mass 7 is fixed to the second casing 12 via the connecting rod 9, and the mass 7 is provided with a fixing structure 7a, and the connecting rod 9 passes through the fixing structure 7a.
  • the fixing structure 7a divides the connecting rod 9 into two parts, and the two parts of the connecting rod 9 Springs 9a are provided on both sides to ensure springback when vibrating in both directions.
  • the vibration sounding device of the present embodiment has two connecting rods 9, two connecting rods 9 respectively disposed at two ends of the mass 7, and the fixing structure 7a on the mass 7 also corresponds to Two, the spring 9a corresponds to four.
  • the two connecting rods 9 suspend the mass 7 in the outer casing and are disposed on both sides of the mass 7a, effectively restraining the mass, preventing polarization during vibration, and improving the vibration performance of the vibrating sounding device.
  • the mass 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, and the mass 7 is away from the voice coil.
  • the magnetic plate 8 is disposed on the side, and the magnetic plate 8 fixes the magnet, and is beneficial to adjust the distribution of the magnetic lines inside the vibration sounding device, which is beneficial to improving product performance.
  • the magnet 6 is two pieces, and two magnets 6 are provided.
  • the voice coil 2 and the diaphragm 3 are connected by a connecting arm 4, as shown in FIG. 7, the transmission arm 4 is L-shaped, and the a side of the transmission arm 4 is A connecting plane 41 is provided, and the b side of the transmission arm 4 is fixed with the voice coil.
  • a positioning recess is provided on the b side of the transmission arm 4 fixed to the voice coil, and the positioning recess ensures the voice coil and the transmission.
  • the arms are tightly assembled.
  • one end of the transmission arm 4 is fixed to the diaphragm 3, and the other end is fixed to the second housing 12 via the elastic piece 5.
  • FIG. 6 one end of the transmission arm 4 is fixed to the diaphragm 3, and the other end is fixed to the second housing 12 via the elastic piece 5.
  • the transmission arm 4 suspends the voice coil 2 above the magnet 6.
  • the diaphragm 3 includes a central plane portion, and the connecting plane 41 of the transmission arm 4 is fixedly coupled with the central plane portion of the diaphragm 3 to improve the bonding strength of the transmission arm 4 and the diaphragm 3, and to avoid vibration of the transmission arm 4. Damage to the diaphragm 3 is beneficial to the transmission of vibration and improve product performance. At the same time, in order to improve the rigidity of the position where the diaphragm 3 and the transmission arm are coupled, the acoustic performance of the product is adjusted. As shown in FIG. 2 and FIG. 3, the diaphragm 3 is further provided with a reinforcing portion 3a, and the reinforcing portion 3a is also disposed on the vibration. On the central plane portion of the membrane 3.
  • 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 vibration direction avoids the thickness direction
  • the vibration direction of the integral structure of the magnet and the mass block avoids the thickness direction, which is advantageous for the thin design of the product, and at the same time, It can increase the vibration space and improve product performance. Therefore, the vibration sounding device of the present invention has the advantages of high thin design and good performance.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Telephone Set Structure (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

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。本发明振动发声装置具有薄型化设计高，性能好的优点。

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***和磁路***；振动***包括振膜、与振膜一体结合的筒状音圈；磁路***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***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***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。
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，性能好的振动发声装置。
为了实现上述目的，本发明振动发声装置采用以下技术方案：
一种振动发声装置，其特征包括外壳，收容于外壳内的振动***和磁路***，并且：所述外壳侧面设置有供声音出射的出声孔；所述振动***包括振膜、音圈和传动结构，所述振膜对应所述出声孔设置，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，所述音圈与所述传动结构固定，所述振膜与所述音圈通过所述传动结构连接；所述磁路***包括磁铁，所述磁铁对应所述音圈设置，所述磁铁所在平面与所述音圈所在平面平行；所述振动发声装置还包括质量块和连接部，所述磁铁与所述质量块固定一体结合，所述磁铁、质量块一体结构通过所述连接部悬设于所述外壳内，所述磁铁、质量块一体结构可在所述磁铁所在平面作往复振动。
作为一种优选的技术方案，所述连接部为连接杆，所述连接杆两端与所述外壳固定，所述质量块对应所述连接杆设置固定结构，所述连接杆贯穿所述固定结构；所述质量块可沿所述连接杆延伸方向振动。
作为进一步优选的技术方案，所述质量块固定结构将所述连接杆分隔成两部分，所述两部分连接杆上均套设有弹簧。
作为更进一步的优选方案，所述连接杆为两根，所述两根连接杆对称设置于所述质量块的两端。
作为一种优选的技术方案，所述传动结构为传动臂，所述传动臂的一个端部与所述振膜固定结合；所述传动臂的主***置与所述音圈固定。
作为进一步优选的技术方案，所述传动臂为L形，所述L形连接臂的一条a边与振膜所在平面平行，另一条b边与所述a边垂直，所述a边延伸出固定结构与所述振膜固定；所述b边与所述音圈固定结合。
作为更进一步优选的技术方案，所述b边远离所述a边的一端通过弹片与外壳固定。
作为再进一步优选的技术方案，所述传动臂为两部分，所述两部 分传动臂对称设置于所述音圈的两端。
作为一种优选的技术方案，所述外壳包括上下两端以及围绕上下两端设置的侧壁，所述出声孔设置于所述侧壁上；所述振膜与所述出声孔所在平面平行，所述振膜竖直设置于所述外壳内；所述音圈与所述振膜所在平面垂直，所述音圈水平设置于所述外壳内，所述磁路设置于所述音圈的一侧。
作为一种优选的技术方案，所述音圈为跑道形，所述磁铁包括两块，所述两块磁铁分别对应所述跑道形音圈的两条直边设置，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***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，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。因此，本发明振动发声装置具有薄型化设计高，性能好的优点。
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***装配示意图；
图6为图1所示振动发声装置振动***装配示意图；
图7为本发明振动发声装置具体实施方式中传动臂结构示意图。
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***及磁路***；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***和磁路***；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***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，传动臂4将音圈2振动传递至振膜3。如图2、图3和图4所示，磁路***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通过连接部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。因此，本发明振动发声装置具有薄型化设计高，性能好的优点。
如图4和图5所示，本实施例的振动发声装置，质量块7通过连接杆9与第二壳体12固定，质量块7上设置有固定结构7a，连接杆9穿过固定结构7a，质量块7与磁铁6的一体结构振动时，该一体结构沿连接杆9延伸方向滑动。为了保证质量块7与磁铁6一体结构振动时的回弹，在连接杆上套设有弹簧9a，如图5所示，固定结构7a将连接杆9分隔成两部分，连接杆9的两部分上均设置有弹簧9a，可以保证两个方向上振动时的回弹。本实施例的振动发声装置，如图2和图5所示，连接杆9为两根，两根连接杆9分别设置于质量块7的两端，质量块7上的固定结构7a也对应为两个，弹簧9a对应为四个。两根连接杆9将质量块7悬设于外壳内，并且设置于质量块7a的两侧，有效对质量块进行限位，防止振动时的偏振，提高振动发声装置的振动性能。
如图2、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，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，并且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。
如图3和图6所示，本实施例的振动发声装置，音圈2和振膜3通过连接臂4连接，如图7所示，传动臂4为L形，传动臂4的a边上设置有一个连接平面41，传动臂4的b边与音圈固定，如图7所示，与音圈固定位置的传动臂4的b边上设置有定位凹陷，该定位凹陷保证音圈与传动臂紧密装配。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，如图4所示，传动臂4将音圈2悬置于磁铁6的上方。如图3所示，振膜3包括中心平面部，传动臂4的连接平面41与振膜3的中心平面部固定结合，以提高传动臂4与振膜3的结合强度，避免传动臂4振动对振膜3造成损坏，有利于振动的传递，提高产品性能。同时，为了提高振膜3与传动臂结合位置的刚性，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。
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***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***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***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。因此，本发明振动发声装置具有薄型化设计高，性能好的优点。
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，其特征包括外壳，收容于外壳内的振动***和磁路***，其特征在于：
    所述外壳侧面设置有供声音出射的出声孔；
    所述振动***包括振膜、音圈和传动结构，所述振膜对应所述出声孔设置，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，所述音圈与所述传动结构固定，所述振膜与所述音圈通过所述传动结构连接；
    所述磁路***包括磁铁，所述磁铁对应所述音圈设置，所述磁铁所在平面与所述音圈所在平面平行；
    所述振动发声装置还包括质量块和连接部，所述磁铁与所述质量块固定一体结合，所述磁铁、质量块一体结构通过所述连接部悬设于所述外壳内，所述磁铁、质量块一体结构可在所述磁铁所在平面作往复振动。
  2. 根据权利要求1所述的振动发声装置，其特征在于：所述连接部为连接杆，所述连接杆两端与所述外壳固定，所述质量块对应所述连接杆设置固定结构，所述连接杆贯穿所述固定结构；所述质量块可沿所述连接杆延伸方向振动。
  3. 根据权利要求2所述的振动发声装置，其特征在于：所述质量块固定结构将所述连接杆分隔成两部分，所述两部分连接杆上均套设有弹簧。
  4. 根据权利要求2或3所述的振动发声装置，其特征在于：所述连接杆为两根，所述两根连接杆对称设置于所述质量块的两端。
  5. 根据权利要求1所述的振动发声装置，其特征在于：所述传动结构为传动臂，所述传动臂的一个端部与所述振膜固定结合；所述传动臂的主***置与所述音圈固定。
  6. 根据权利要求5所述的振动发声装置，其特征在于：所述传动臂为L形，所述L形连接臂的一条(a)边与振膜所在平面平行，另 一条(b)边与所述(a)边垂直，所述(a)边延伸出固定结构与所述振膜固定；所述(b)边与所述音圈固定结合。
  7. 根据权利要求6所述的振动发声装置，其特征在于：所述(b)边远离所述(a)边的一端通过弹片与外壳固定。
  8. 根据权利要求5至7任一权利要求所述的振动发声装置，其特征在于：所述传动臂为两部分，所述两部分传动臂对称设置于所述音圈的两端。
  9. 根据权利要求1所述的振动发声装置，其特征在于：所述外壳包括上下两端以及围绕上下两端设置的侧壁，所述出声孔设置于所述侧壁上；所述振膜与所述出声孔所在平面平行，所述振膜竖直设置于所述外壳内；所述音圈与所述振膜所在平面垂直，所述音圈水平设置于所述外壳内；所述磁路设置于所述音圈的一侧。
  10. 根据权利要求1所述的振动发声装置，其特征在于：所述音圈为跑道形，所述磁铁包括两块，所述两块磁铁分别对应所述跑道形音圈的两条直边设置，所述两块磁铁的极化方向相反。
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CN107820184A (zh) * 2017-11-28 2018-03-20 歌尔股份有限公司 一种压电发声装置
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