WO2022007170A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2022007170A1
WO2022007170A1 PCT/CN2020/114030 CN2020114030W WO2022007170A1 WO 2022007170 A1 WO2022007170 A1 WO 2022007170A1 CN 2020114030 W CN2020114030 W CN 2020114030W WO 2022007170 A1 WO2022007170 A1 WO 2022007170A1
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WO
WIPO (PCT)
Prior art keywords
fixed
fixing
magnetic steel
voice coil
magnetic
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/CN2020/114030
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English (en)
French (fr)
Inventor
钟志威
金鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2022007170A1 publication Critical patent/WO2022007170A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a sound-emitting device used in electronic sound box products.
  • the sound-generating device of the related art includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system having a magnetic gap.
  • the vibration system includes a diaphragm fixed on the basin frame, a voice coil fixed on the diaphragm and inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound, and a voice coil fixed on the basin frame and connected with the The voice coil is away from the elastic support component connected at one end of the diaphragm.
  • the magnetic circuit system includes a magnetic yoke, a main magnetic steel fixed on the magnetic yoke, and a first auxiliary magnetic steel and a second secondary magnetic steel that are arranged around the main magnetic steel and spaced from the main magnetic steel to form the magnetic gap.
  • the elastic support assembly includes an auxiliary diaphragm, and the auxiliary diaphragm includes a first fixed part connected to the basin frame, a second fixed part connected to the voice coil, and the second fixed part and the second fixed part respectively.
  • the folded ring portion of the first fixing portion is recessed in a direction away from the main magnet steel to form an escape groove, and the second auxiliary magnet steel extends into the escape groove.
  • the structure makes it possible that when the voice coil drives the When the auxiliary diaphragm vibrates, the swing amplitude along the short axis direction of the main magnetic steel is relatively large, which makes the reliability of the sounding device poor.
  • the purpose of the utility model is to provide a sound-emitting device with high reliability.
  • the present invention provides a sound-generating device, which includes a basin frame, a vibration system and a magnetic circuit system with a magnetic gap respectively fixed to the basin frame;
  • the vibration system includes a vibration system fixed to the basin frame.
  • the magnetic circuit system includes a The magnetic yoke of the basin frame, the main magnetic steel fixed to the magnetic yoke, the two first auxiliary magnetic steels respectively located on opposite sides of the main magnetic steel, and the two first auxiliary magnetic steels respectively located on the other opposite sides of the main magnetic steel.
  • the elastic support component includes a an auxiliary diaphragm on opposite sides of the magnetic steel and on the same side of the second auxiliary magnetic steel and spaced apart from the second auxiliary magnetic steel;
  • the auxiliary diaphragm includes a first fixed diaphragm connected to the basin frame part, two second fixing parts connected to the voice coil, and folded ring parts respectively connecting the two second fixing parts to the first fixing part, the folded ring parts are located in the two second fixing parts.
  • the part between the two fixing parts is recessed in the direction away from the main magnet, and together with the two second fixing parts, forms an opening-shaped accommodating space toward the main magnet.
  • the second auxiliary magnet The steel is accommodated in the accommodating space; the side of the folded ring portion facing the accommodating space is curved.
  • the cross section of the side of the folded ring portion facing the accommodating space is in an arc-shaped structure that protrudes toward the main magnet steel.
  • the cross section of the second secondary magnetic steel decreases gradually along the direction from the main magnetic steel to the auxiliary diaphragm, and the folded ring portion is concave toward the side away from the main magnetic steel.
  • the shape matches the second secondary magnet.
  • the main magnetic steel is rectangular
  • the two first auxiliary magnetic steels are respectively located on opposite sides of the long axis of the main magnetic steel
  • the two second auxiliary magnetic steels are respectively located on the main magnetic steel opposite sides of the short axis.
  • the elastic support components include two and are respectively located on opposite sides of the short axis of the main magnet steel.
  • each of the elastic support components further includes an elastic member attached and fixed to a side of the elastic member close to the diaphragm, and the elastic member is connected to the voice coil.
  • the elastic member includes a first fixing arm fixed on the basin frame and connected with the first fixing part, two second fixing arms fixed on the two second fixing parts, and two fixing arms respectively Each of the second fixed arms is connected to the two elastic arms of the first fixed arm.
  • the vibration system further includes a skeleton connecting the voice coil and the elastic member support assembly, the skeleton includes a skeleton body fixed on the diaphragm, extending from the skeleton body to the voice coil and The first fixing part of the frame fixed to the voice coil and the second fixing parts of the four frames extending from the frame body to the second fixing arm and being fixed to the second fixing arm.
  • the voice coil has a rectangular structure with rounded corners
  • the first fixing part of the skeleton is annular and is fixed on the end of the voice coil close to the diaphragm
  • the four second fixing parts of the skeleton are respectively are arranged at the positions of the four rounded corners of the voice coil.
  • the magnetic circuit system further includes an upper clamping plate, and the upper clamping plate includes a ring-shaped fixing ring fixed on the end of the basin frame away from the vibrating membrane, and the first auxiliary magnetic Two first secondary pole cores extending from steel and two second secondary pole cores extending from the fixing ring to the second secondary magnetic steel, the two first secondary pole cores are respectively stacked and fixed on two The first auxiliary magnetic steel and the two second auxiliary pole cores are respectively stacked and fixed on the two second auxiliary magnetic steels; the first fixing arm is fixed on the end of the fixing ring away from the diaphragm .
  • the part of the folded ring part of the auxiliary diaphragm located between the two second fixing parts is concave in the direction away from the main magnet steel and is jointly enclosed with the two second fixing parts.
  • the accommodating space is open in the direction of the main magnet, the accommodating space is used for accommodating the second secondary magnet, and the side of the folded ring portion facing the accommodating space is set as a curved surface, that is, the part of the folded ring portion facing the accommodating space is set as Semi-closed surface.
  • the curved surface provided in this part of the folded ring part is beneficial to reduce the height of the folded ring part, so that the auxiliary diaphragm can increase the two diameters along the short axis direction of the main magnet without affecting the large-scale longitudinal vibration state.
  • the traction force between the second fixing parts increases the effect of suppressing the short-axis swinging ability of the voice coil, so that the reliability of the sound-emitting device is high.
  • Fig. 1 is the stereoscopic structure schematic diagram of the sound-emitting device of the present invention
  • FIG. 2 is an exploded view of a partial three-dimensional structure of the sound-emitting device of the present invention
  • Fig. 3 is a sectional view along line A-A in Fig. 1;
  • FIG. 5 is a schematic three-dimensional structure diagram of the auxiliary diaphragm of the sound-emitting device of the present invention.
  • FIG. 6 is a cross-sectional view along line B-B in FIG. 5;
  • FIG. 7 is a schematic diagram of the assembled three-dimensional structure of the demagnetizing yoke of the sound-emitting device of the present invention.
  • FIG. 8 is a schematic diagram of the assembled three-dimensional structure of the elastic support component, the voice coil and the skeleton of the sound-emitting device of the present invention.
  • the present invention provides a sound-generating device 100
  • the sound-generating device 100 includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3 respectively supported on the basin frame 1, and the magnetic
  • the circuit system 3 has a magnetic gap 30, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and emit sound.
  • the basin frame 1 is used to fix the vibration system 2 and the magnetic circuit system 3 .
  • the vibration system 2 includes a diaphragm 21 fixed on the basin frame 1 , a voice coil 22 inserted in the magnetic gap 30 to drive the diaphragm 21 to vibrate and produce sound, and a voice coil 22 fixed on the basin frame 1 and connected with it.
  • the magnetic circuit system 3 includes a magnetic yoke 31 fixed to the basin frame 1 , a main magnetic steel 32 fixed to the magnetic yoke 31 , and two first auxiliary magnetic steels located on opposite sides of the main magnetic steel 32 respectively.
  • the steel 33 and the two second secondary magnets 34 located on the other opposite sides of the main magnet 32 respectively.
  • the first secondary magnetic steel 33 and the second secondary magnetic steel 34 are spaced apart from the main magnetic steel 32 and together form the magnetic gap 30 .
  • the elastic support assembly 23 includes auxiliary diaphragms 231 located on opposite sides of the main magnetic steel 32 and opposite to the second auxiliary magnetic steel 34 on the same side and spaced from the second auxiliary magnetic steel 34 .
  • the auxiliary diaphragm 231 includes a first fixing portion 2311 , a second fixing portion 2312 and a folding ring portion 2313 .
  • the first fixing portion 2311 is connected to the basin frame 1 .
  • the second fixing portion 2312 includes two.
  • the two second fixing parts 2312 are connected to the voice coil 22 for the voice coil 22 to drive the auxiliary diaphragm 231 to vibrate.
  • the folding ring portions 2313 respectively connect the two second fixing portions 2312 to the first fixing portions 2311 .
  • the cross-section of the folded ring portion 2313 is an arc-shaped structure that is convex or concave toward the direction of the diaphragm 21 .
  • the portion of the folded ring portion 2313 located between the two second fixing portions 2312 is recessed in a direction away from the main magnet 32 and together with the two second fixing portions 2312 to form a direction toward the main magnet
  • the accommodating space 230 is open in the direction of the steel 32 .
  • the second auxiliary magnetic steel 34 is accommodated in the accommodating space 230 . That is to say, the second secondary magnetic steel 34 extends into the accommodating space 230 , thereby maximizing the magnetic field of the magnetic circuit system 3 , so that the acoustic performance of the sounding device 100 is excellent.
  • the cross section of the second secondary magnetic steel 34 decreases gradually from the main magnetic steel 32 to the auxiliary diaphragm.
  • the shape of the recess of the folded ring portion 2313 to the side away from the main magnetic steel 32 matches the shape of the second auxiliary magnetic steel 34 .
  • This structure enables the volume of the second secondary magnetic steel 34 to be designed to be larger, and maximizes the magnetic field of the magnetic circuit of the magnetic circuit system 3 , so that the acoustic performance of the sound-emitting device 100 is excellent.
  • a surface of the ring portion 2313 facing the accommodating space 230 is curved.
  • the cross section of the side of the folded ring portion 2313 facing the accommodating space 230 has an arc structure that protrudes toward the main magnet steel 32 . That is, the portion of the folded ring portion 2313 facing the accommodating space 230 is set as a semi-closed curved surface.
  • the curved surface of the folded ring portion 2313 is beneficial to reduce the height of the folded ring portion 2313, so that the auxiliary diaphragm 231 can increase along the main magnetic field without affecting the large-scale longitudinal vibration state.
  • the traction force between the two second fixing parts 2312 in the short-axis direction of the steel 32 enhances the ability to restrain the short-axis swing of the voice coil 22 and makes the sound-emitting device 100 highly reliable.
  • the auxiliary diaphragm 231 is made of a polymer material, for example, at least one of polymer materials such as silicone, rubber, PEEK, PEL, and TPU.
  • the material for making the auxiliary diaphragm 231 is not limited to this.
  • the elastic support components 23 include two and are respectively located on opposite sides of the short axis of the main magnet 32 .
  • the arrangement of the two elastic support assemblies 23 forms a symmetrical structure, so that the support effect of the two elastic support assemblies 23 on the voice coil 22 is more stable, and the anti-voice coil 22 has a better lateral swing effect.
  • each of the elastic support components 23 further includes an elastic member 232 that is fitted and fixed to the elastic member 232 on the side close to the vibrating membrane 21 .
  • the elastic member 232 is connected with the voice coil 22 .
  • the auxiliary diaphragm 231 is indirectly connected to the voice coil 22 through the elastic member 232 .
  • the elastic member 232 is a flexible circuit board, and the voice coil 22 is electrically connected to the elastic member 232 . On the one hand, it is used to provide support for the voice coil 22; its reliability.
  • the elastic member 232 includes a first fixing arm 2321 fixed to the basin frame 1 and connected to the first fixing portion 2311 , two second fixing arms 2322 fixed to the two second fixing portions 2312 , and The two second fixing arms 2322 are respectively connected to the two elastic arms 2323 of the first fixing arm 2321 .
  • each of the second fixing portions 2312 and the adjacent one of the second fixing arms 2322 are attached and fixed to form an integral structure, which has a more stable supporting effect on the voice coil 22, and this structure restrains the voice coil 22 from swaying. the best ability.
  • the elastic support assembly 23 does not affect the magnetic gap 30, and the design of the magnetic circuit system is optimized, so that the acoustic performance of the sound-emitting device 100 is better, and the elastic support assembly 23 is easy to improve.
  • the stability of the vibration system 2 .
  • the vibration system 2 further includes a frame 24 connecting the voice coil 22 and the elastic support assembly 23 .
  • the frame 24 includes a frame body 241 fixed to the diaphragm 21 , a frame first fixing portion 242 extending from the frame body 241 to the voice coil 22 and fixed to the voice coil 22 . and the four frame second fixing portions 243 extending from the frame body 241 to the second fixing arm 2322 and being fixed to the second fixing arm 2322 .
  • the voice coil 22 is connected to the frame 24 ;
  • the frame 24 is connected to the second fixed arm 2322 of the elastic member 232 ;
  • the second fixed arm 2322 is connected to the second fixed arm 2322 of the auxiliary diaphragm 231
  • the two fixing parts 2312 are connected. This structure enables the auxiliary diaphragm 231 to form an indirect connection with the voice coil 22 .
  • the voice coil 22 has a rectangular structure with rounded corners.
  • the first fixing portion 242 of the frame is annular and is fixed to an end of the voice coil 22 close to the diaphragm 21 .
  • the four second fixing portions 243 of the skeleton are respectively disposed at the four rounded corners of the voice coil 22 .
  • the two second fixing parts 2312 are respectively fixed to the short side of the same voice coil 22, and this structure makes the arrangement of the two second fixing parts 2312 form a symmetrical structure, so that the two elastic
  • the supporting effect of the support assembly 23 on the voice coil 22 is more stable, and the effect of preventing the voice coil 22 from swinging laterally is better.
  • the main magnetic steel 32 is rectangular.
  • the two first secondary magnetic steels 33 are respectively located on opposite sides of the long axis of the main magnetic steel 32
  • the two second secondary magnetic steels 34 are respectively located on opposite sides of the short axis of the main magnetic steel 32 .
  • the magnetic circuit system 3 further includes a main pole core 35 fixed to the main magnetic steel 32 and close to the vibration system 2 side.
  • the main pole core 35 The projection to the main magnetic steel 32 along the vibration direction of the diaphragm 21 completely coincides with the main magnetic steel 32 . That is to say, the shape of the main pole core 35 is the same as the shape of the main magnetic steel 32 , so that the main magnetic steel 32 is added to the first auxiliary magnetic steel 33 and the second auxiliary magnetic steel 34 respectively. the strength of the magnetic field that forms the magnetic gap 30 .
  • the magnetic circuit system 3 also includes an upper splint 36, the upper splint 36 includes a ring-shaped fixing ring 361 fixed on the basin frame 1, and two first pair extending from the fixing ring 361 to the first auxiliary magnet 33.
  • the pole core 362 and the two second auxiliary pole cores 363 extending from the fixing ring 361 to the second auxiliary magnetic steel 34, the two first auxiliary pole cores 362 are respectively stacked and fixed on the two second auxiliary pole cores.
  • the two second auxiliary pole cores 363 are respectively stacked and fixed on the two second auxiliary magnetic steels 34 . Since the fixing ring 361 is fixed to the basin frame 1 , the main magnetic steel 32 and/or the first secondary pole core 362 and the second secondary magnetic steel 34 are fixed to the The basin frame 1 is used to fix the magnetic circuit system to the basin frame 1 .
  • the first fixing arm 2321 is fixed to the end of the fixing ring 361 away from the diaphragm 21 . This structure enables the elastic support assembly 23 to be fixed to the basin frame 1 through the fixing ring 361 .
  • the part of the folded ring part of the auxiliary diaphragm located between the two second fixing parts is concave in the direction away from the main magnet steel and is jointly enclosed with the two second fixing parts.
  • the accommodating space is open in the direction of the main magnet, the accommodating space is used for accommodating the second secondary magnet, and the side of the folded ring portion facing the accommodating space is set as a curved surface, that is, the part of the folded ring portion facing the accommodating space is set as Semi-closed surface.
  • the curved surface provided in this part of the folded ring part is beneficial to reduce the height of the folded ring part, so that the auxiliary diaphragm can increase the two diameters along the short axis direction of the main magnet without affecting the large-scale longitudinal vibration state.
  • the traction force between the second fixing parts increases the effect of suppressing the short-axis swinging ability of the voice coil, so that the reliability of the sound-emitting device is high.

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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)

Abstract

本实用新型提供了一种发声器件，其包括盆架、振动系统和、磁路系统；振动系统包括振膜、音圈以及弹性支撑组件；磁路系统包括磁轭、主磁钢、第一副磁钢及第二副磁钢，弹性支撑组件包括位于主磁钢相对两侧并与第二副磁钢呈同侧相对设置且与第二副磁钢间隔的辅助振膜；辅助振膜包括连接于盆架的第一固定部、连接于音圈的第二固定部以及分别将第二固定部连接至第一固定部的折环部，折环部位于两个第二固定部之间的部分向远离主磁钢的方向凹陷并与两个第二固定部共同围成朝向主磁钢方向呈开口状的容纳空间，第二副磁钢收容于容纳空间；折环部朝向容纳空间的一面呈曲面。与相关技术相比，本实用新型的发声器件的可靠性高。

Description

发声器件 技术领域
本实用新型涉及电声转换领域，尤其涉及一种运用于电子音箱产品的发声器件。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的发声器件被大量应用到现在的智能移动设备之中。
相关技术的所述发声器件包括盆架和分别固定于所述盆架的振动系统及具有磁间隙的磁路系统。所述振动系统包括固定于所述盆架的振膜、固定于所述振膜并插设于所述磁间隙以驱动所述振膜振动发声的音圈以及固定于所述盆架并与所述音圈远离所述振膜一端连接的弹性支撑组件。所述磁路系统包括磁轭、固定于所述磁轭的主磁钢和环设于所述主磁钢并与所述主磁钢间隔形成所述磁间隙的第一副磁钢和第二副磁钢，所述第一副磁钢位于所述主磁钢的长轴一侧，而所述第二副磁钢位于所述主磁钢的短轴一侧。所述弹性支撑组件包括辅助振膜，所述辅助振膜包括连接于所述盆架的第一固定部、连接于所述音圈的第二固定部以及分别连接所述第二固定部和所述第一固定部的折环部，所述折环部向远离所述主磁钢的方向凹陷形成避让槽，所述第二副磁钢延伸至所述避让槽内。
 技术问题
然而，相关技术的所述发声器件中，所述折环部因为设置所述避让槽，该结构使得由于所述折环部在设置所述避让槽的部分面积较小，当音圈驱动所述辅助振膜振动时，沿所述主磁钢的短轴方向的摇摆幅度较大，使得所述发声器件的可靠性较差。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种可靠性高的发声器件。
为了达到上述目的，本实用新型提供了一种发声器件，其包括盆架以及分别固定于所述盆架的振动系统和具有磁间隙的磁路系统；所述振动系统包括固定于所述盆架的振膜、插设于所述磁间隙以驱动所述振膜振动发声的音圈、以及固定于所述盆架并与所述音圈连接的弹性支撑组件；所述磁路系统包括固定于所述盆架的磁轭、固定于所述磁轭的主磁钢、分别位于所述主磁钢相对两侧的两个第一副磁钢以及分别位于所述主磁钢另外相对两侧的两个第二副磁钢，所述第一副磁钢、所述第二副磁钢均与所述主磁钢间隔并共同围成所述磁间隙，所述弹性支撑组件包括位于所述主磁钢相对两侧并与所述第二副磁钢呈同侧相对设置且与所述第二副磁钢间隔的辅助振膜；所述辅助振膜包括连接于所述盆架的第一固定部、连接于所述音圈的两个第二固定部以及分别将两个所述第二固定部连接至所述第一固定部的折环部，所述折环部位于两个所述第二固定部之间的部分向远离所述主磁钢的方向凹陷并与两个所述第二固定部共同围成朝向所述主磁钢方向呈开口状的容纳空间，所述第二副磁钢收容于所述容纳空间；所述折环部朝向所述容纳空间的一面呈曲面。
优选的，所述折环部朝向所述容纳空间的一面的横截面呈向所述主磁钢方向凸起的弧形结构。
优选的，所述第二副磁钢沿自所述主磁钢向所述辅助振膜的方向，其横截面逐渐减小，所述折环部向远离所述主磁钢一侧的凹陷的形状与所述第二副磁钢匹配。
优选的，所述主磁钢呈矩形，两个所述第一副磁钢分别位于所述主磁钢的长轴相对两侧，两个所述第二副磁钢分别位于所述主磁钢的短轴相对两侧。
优选的，所述弹性支撑组件包括两个且分别位于所述主磁钢的短轴相对两侧。
优选的，每一所述弹性支撑组件还包括贴合固定于所述弹性件的靠近所述振膜一侧的弹性件，所述弹性件与所述音圈连接。
优选的，所述弹性件包括固定于所述盆架并与所述第一固定部连接的第一固定臂、固定于两个所述第二固定部的两个第二固定臂以及分别将两个所述第二固定臂连接至所述第一固定臂的两个弹臂。
优选的，所述振动系统还包括连接所述音圈和所述弹性件支撑组件的骨架，所述骨架包括固定于所述振膜的骨架本体、由所述骨架本体向所述音圈延伸并固定于所述音圈的骨架第一固定部以及由所述骨架本体向所述第二固定臂延伸并固定于所述第二固定臂的四个骨架第二固定部。
优选的，所述音圈呈带圆角的矩形结构，所述骨架第一固定部呈环状且固定于所述音圈靠近所述振膜的一端，四个所述骨架第二固定部分别设置于所述音圈的四个所述圆角的位置。
优选的，所述磁路系统还包括上夹板，所述上夹板包括固定于所述盆架远离所述振膜一端的呈环状的固定环、由所述固定环向所述第一副磁钢延伸的两个第一副极芯以及由所述固定环向所述第二副磁钢延伸的两个第二副极芯，两个所述第一副极芯分别叠设固定于两个所述第一副磁钢，两个所述第二副极芯分别叠设固定于两个所述第二副磁钢；所述第一固定臂固定于所述固定环远离所述振膜一端。
 有益效果
与相关技术相比，本实用新型的发声器件设置辅助振膜的折环部位于两个第二固定部之间的部分向远离主磁钢的方向凹陷并与两个第二固定部共同围成朝向主磁钢方向呈开口状的容纳空间，容纳空间用于收容第二副磁钢，并将折环部朝向容纳空间的一面设置呈曲面，也就是在折环部朝向容纳空间的部分设置为半封闭曲面。该折环部在该部分设置曲面有利于减少折环部的高度，使得辅助振膜可以在不影响大幅度的纵向振动状态情况下，可以增加沿所述主磁钢的短轴方向的两个第二固定部之间的牵引力，从而使得增强抑制音圈的短轴摇摆能力的作用，使得发声器件可靠性高。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型发声器件的立体结构示意图；
图2为本实用新型发声器件的部分立体结构分解图；
图3为沿图1中A-A线的剖示图；
图4为本实用新型发声器件的弹性支撑组件的立体结构分解图；
图5为本实用新型发声器件的辅助振膜的立体结构示意图；
图6为沿图5中B-B线的剖示图；
图7为本实用新型发声器件除磁轭的组装立体结构示意图；
图8为本实用新型发声器件的弹性支撑组件、音圈及骨架的组装立体结构示意图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请同时参阅图1-8，本实用新型提供了一种发声器件100，所述发声器件100包括盆架1、分别支撑于所述盆架1的振动系统2和磁路系统3，所述磁路系统3具有磁间隙30，所述磁路系统3驱动所述振动系统2振动发声。
所述盆架1用于固定所述振动系统2和所述磁路系统3。
所述振动系统2包括固定于所述盆架1的振膜21、插设于所述磁间隙30以驱动所述振膜21振动发声的音圈22、以及固定于所述盆架1并与所述音圈22连接的弹性支撑组件23。
所述磁路系统3包括固定于所述盆架1的磁轭31、固定于所述磁轭31的主磁钢32、分别位于所述主磁钢32相对两侧的两个第一副磁钢33以及分别位于所述主磁钢32另外相对两侧的两个第二副磁钢34。所述第一副磁钢33、所述第二副磁钢34均与所述主磁钢32间隔并共同围成所述磁间隙30。
所述弹性支撑组件23包括位于所述主磁钢32相对两侧并与所述第二副磁钢34呈同侧相对设置且与所述第二副磁钢34间隔的辅助振膜231。
所述辅助振膜231包括第一固定部2311、第二固定部2312及折环部2313。
所述第一固定部2311连接于所述盆架1。
所述第二固定部2312包括两个。两个所述第二固定部2312连接于所述音圈22，以用于所述音圈22驱动所述辅助振膜231振动。
所述折环部2313分别将两个所述第二固定部2312连接至所述第一固定部2311。其中，所述折环部2313的横截面呈向所述振膜21方向凸起或凹陷的弧形结构。
所述折环部2313位于两个所述第二固定部2312之间的部分向远离所述主磁钢32的方向凹陷并与两个所述第二固定部2312共同围成朝向所述主磁钢32方向呈开口状的容纳空间230。其中，所述第二副磁钢34收容于所述容纳空间230。也就是说，所述第二副磁钢34延伸至所述容纳空间230内，从而使得所述磁路系统3磁路磁场最大化，使得所述发声器件100声学性能优。
本实施方式中，所述第二副磁钢34自所述主磁钢32向所述辅助振膜的方向，其横截面逐渐减小。所述折环部2313向远离所述主磁钢32一侧的凹陷的形状与所述第二副磁钢34匹配。该结构使得所述第二副磁钢34的体积可以设计得更大，并使得所述磁路系统3磁路磁场最大化，使得所述发声器件100声学性能优。
所述折环部2313朝向所述容纳空间230的一面呈曲面。本实施方式中，所述折环部2313朝向所述容纳空间230的一面的横截面呈向所述主磁钢32方向凸起的弧形结构。也就是在所述折环部2313朝向所述容纳空间230的部分设置为半封闭曲面。所述折环部2313在该部分设置曲面有利于减少所述折环部2313的高度，使得所述辅助振膜231可以在不影响大幅度的纵向振动状态情况下，可以增加沿所述主磁钢32的短轴方向的两个所述第二固定部2312之间的牵引力，从而使得增强抑制所述音圈22短轴摇摆能力的作用，使得发声器件100可靠性高。
本实施方式中，所述辅助振膜231为高分子材料制成，比如，为硅胶、橡胶、PEEK、PEL及TPU等高分子材料中的至少一种制成。当然，制成所述辅助振膜231的材料并不限于此。
本实施方式中，所述弹性支撑组件23包括两个且分别位于所述主磁钢32的短轴相对两侧。两个所述弹性支撑组件23的设置形成对称结构，从而使得两个所述弹性支撑组件23对所述音圈22的支撑效果更稳定，防音圈22横向摆动效果更优。
本实施实施中，每一所述弹性支撑组件23还包括贴合固定于所述弹性件232的靠近所述振膜21一侧的弹性件232。所述弹性件232与所述音圈22连接。所述辅助振膜231通过所述弹性件232间接与所述音圈22连接。
具体的，所述弹性件232为柔性线路板，所述音圈22与所述弹性件232电连接。一方面用于提供对所述音圈22的支撑，另一方面为所述音圈22引入外部电信号，避免了通过引线为所述音圈22引入外部电信号时容易断线的问题，提高其可靠性。
所述弹性件232包括固定于所述盆架1并与所述第一固定部2311连接的第一固定臂2321、固定于两个所述第二固定部2312的两个第二固定臂2322以及分别将两个所述第二固定臂2322连接至所述第一固定臂2321的两个弹臂2323。
其中，每一所述第二固定部2312和相邻的一个所述第二固定臂2322贴合固定形成一体结构，对所述音圈22的支撑效果更稳定，该结构的抑制音圈22摇摆的能力最优。综合上述，该种结构下所述弹性支撑组件23没有影响磁间隙30，优化了磁路系统的设计，使得所述发声器件100的声学性能更优，同时所述弹性支撑组件23的设置便于提升所述振动系统2的稳定性。
所述振动系统2还包括连接所述音圈22和所述弹性支撑组件23的骨架24。本实施方式中，所述骨架24包括固定于所述振膜21的骨架本体241、由所述骨架本体241向所述音圈22延伸并固定于所述音圈22的骨架第一固定部242以及由所述骨架本体241向所述第二固定臂2322延伸并固定于所述第二固定臂2322的四个骨架第二固定部243。其中，所述音圈22与所述骨架24连接；所述骨架24与所述弹性件232的所述第二固定臂2322连接；所述第二固定臂2322与所述辅助振膜231的第二固定部2312连接。该结构使得所述辅助振膜231与所述音圈22形成间接连接。
本实施方式中，所述音圈22呈带圆角的矩形结构。所述骨架第一固定部242呈环状且固定于所述音圈22靠近所述振膜21的一端。四个所述骨架第二固定部243分别设置于所述音圈22的四个所述圆角的位置。其中，两个所述第二固定部2312分别固定于同一个所述音圈22的短边，该结构使得两个所述第二固定部2312的设置形成对称结构，从而使得两个所述弹性支撑组件23对所述音圈22的支撑效果更稳定，防音圈22横向摆动效果更优。
本实施方式中，所述主磁钢32呈矩形。两个所述第一副磁钢33分别位于所述主磁钢32的长轴相对两侧，两个所述第二副磁钢34分别位于所述主磁钢32的短轴相对两侧。
在本实施方式中，为了使磁场更为均衡，所述磁路系统3还包括固定于所述主磁钢32的靠近所述振动系统2一侧的主极芯35，所述主极芯35沿所述振膜21的振动方向向所述主磁钢32的投影完全与所述主磁钢32重合。也就是说，所述主极芯35的形状与所述主磁钢32的形状相同，从而增加所述主磁钢32分别与所述第一副磁钢33和所述第二副磁钢34的形成所述磁间隙30的磁场强度。
为了进一步提高所述磁路系统3的性能，使所述磁路系统3的磁力线尽可能多的被所述音圈22切割，以形成更大的驱动力磁路空间，所述磁路系统3还包括上夹板36，所述上夹板36包括固定于所述盆架1的呈环状的固定环361、由所述固定环361向所述第一副磁钢33延伸的两个第一副极芯362以及由所述固定环361向所述第二副磁钢34延伸的两个第二副极芯363，两个所述第一副极芯362分别叠设固定于两个所述第一副磁钢33，两个所述第二副极芯363分别叠设固定于两个所述第二副磁钢34。由于所述固定环361固定于所述盆架1，所述主磁钢32和/或所述第一副极芯362和所述第二副磁钢34通过所述固定环361固定于所述盆架1，从而实现将磁路系统固定于所述盆架1。其中，所述第一固定臂2321固定于所述固定环361远离所述振膜21一端。该结构使得所述弹性支撑组件23通过所述固定环361固定于所述盆架1。
与相关技术相比，本实用新型的发声器件设置辅助振膜的折环部位于两个第二固定部之间的部分向远离主磁钢的方向凹陷并与两个第二固定部共同围成朝向主磁钢方向呈开口状的容纳空间，容纳空间用于收容第二副磁钢，并将折环部朝向容纳空间的一面设置呈曲面，也就是在折环部朝向容纳空间的部分设置为半封闭曲面。该折环部在该部分设置曲面有利于减少折环部的高度，使得辅助振膜可以在不影响大幅度的纵向振动状态情况下，可以增加沿所述主磁钢的短轴方向的两个第二固定部之间的牵引力，从而使得增强抑制音圈的短轴摇摆能力的作用，使得发声器件可靠性高。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种发声器件，其包括盆架以及分别固定于所述盆架的振动系统和具有磁间隙的磁路系统；所述振动系统包括固定于所述盆架的振膜、插设于所述磁间隙以驱动所述振膜振动发声的音圈、以及固定于所述盆架并与所述音圈连接的弹性支撑组件；所述磁路系统包括固定于所述盆架的磁轭、固定于所述磁轭的主磁钢、分别位于所述主磁钢相对两侧的两个第一副磁钢以及分别位于所述主磁钢另外相对两侧的两个第二副磁钢，所述第一副磁钢、所述第二副磁钢均与所述主磁钢间隔并共同围成所述磁间隙，所述弹性支撑组件包括位于所述主磁钢相对两侧并与所述第二副磁钢呈同侧相对设置且与所述第二副磁钢间隔的辅助振膜；其特征在于，所述辅助振膜包括连接于所述盆架的第一固定部、连接于所述音圈的两个第二固定部以及分别将两个所述第二固定部连接至所述第一固定部的折环部，所述折环部位于两个所述第二固定部之间的部分向远离所述主磁钢的方向凹陷并与两个所述第二固定部共同围成朝向所述主磁钢方向呈开口状的容纳空间，所述第二副磁钢收容于所述容纳空间；所述折环部朝向所述容纳空间的一面呈曲面。
  2. 根据权利要求1所述的发声器件，其特征在于，所述折环部朝向所述容纳空间的一面的横截面呈向所述主磁钢方向凸起的弧形结构。
  3. 根据权利要求1所述的发声器件，其特征在于，所述第二副磁钢沿自所述主磁钢向所述辅助振膜的方向，其横截面逐渐减小，所述折环部向远离所述主磁钢一侧的凹陷的形状与所述第二副磁钢匹配。
  4. 根据权利要求1所述的发声器件，其特征在于，所述主磁钢呈矩形，两个所述第一副磁钢分别位于所述主磁钢的长轴相对两侧，两个所述第二副磁钢分别位于所述主磁钢的短轴相对两侧。
  5. 根据权利要求4所述的发声器件，其特征在于，所述弹性支撑组件包括两个且分别位于所述主磁钢的短轴相对两侧。
  6. 根据权利要求5所述的发声器件，其特征在于，每一所述弹性支撑组件还包括贴合固定于所述弹性件的靠近所述振膜一侧的弹性件，所述弹性件与所述音圈连接。
  7. 根据权利要求6所述的发声器件，其特征在于，所述弹性件包括固定于所述盆架并与所述第一固定部连接的第一固定臂、固定于两个所述第二固定部的两个第二固定臂以及分别将两个所述第二固定臂连接至所述第一固定臂的两个弹臂。
  8. 根据权利要求7所述的发声器件，其特征在于，所述振动系统还包括连接所述音圈和所述弹性件支撑组件的骨架，所述骨架包括固定于所述振膜的骨架本体、由所述骨架本体向所述音圈延伸并固定于所述音圈的骨架第一固定部以及由所述骨架本体向所述第二固定臂延伸并固定于所述第二固定臂的四个骨架第二固定部。
  9. 根据权利要求8所述的发声器件，其特征在于，所述音圈呈带圆角的矩形结构，所述骨架第一固定部呈环状且固定于所述音圈靠近所述振膜的一端，四个所述骨架第二固定部分别设置于所述音圈的四个所述圆角的位置。
  10. 根据权利要求7所述的发声器件，其特征在于，所述磁路系统还包括上夹板，所述上夹板包括固定于所述盆架远离所述振膜一端的呈环状的固定环、由所述固定环向所述第一副磁钢延伸的两个第一副极芯以及由所述固定环向所述第二副磁钢延伸的两个第二副极芯，两个所述第一副极芯分别叠设固定于两个所述第一副磁钢，两个所述第二副极芯分别叠设固定于两个所述第二副磁钢；所述第一固定臂固定于所述固定环远离所述振膜一端。
PCT/CN2020/114030 2020-07-06 2020-09-08 发声器件 Ceased WO2022007170A1 (zh)

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