WO2022126776A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2022126776A1
WO2022126776A1 PCT/CN2020/141782 CN2020141782W WO2022126776A1 WO 2022126776 A1 WO2022126776 A1 WO 2022126776A1 CN 2020141782 W CN2020141782 W CN 2020141782W WO 2022126776 A1 WO2022126776 A1 WO 2022126776A1
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WO
WIPO (PCT)
Prior art keywords
sub
voice coil
dome
main body
fixing
Prior art date
Application number
PCT/CN2020/141782
Other languages
English (en)
French (fr)
Inventor
金鑫
张帆
钟志威
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)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 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022126776A1 publication Critical patent/WO2022126776A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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 present invention relates to the technical field of acoustic-electrical conversion, in particular to a sound-generating device.
  • the sound-generating device includes a vibration system, a magnetic circuit system for driving the vibration system to vibrate and sound, and a
  • the vibration system includes a diaphragm and a voice coil for driving the vibration of the diaphragm, and the diaphragm includes a dome and a skeleton supporting the dome.
  • the skeleton and the dome are arranged in layers, resulting in a larger thickness of the stacked part of the skeleton and the dome. Therefore, it is necessary to provide a sounding device to solve the above technical problems.
  • An object of the present invention is to provide a sounding device, which can reduce the thickness of the sounding device.
  • the present invention provides a sound-generating device, which includes a basin frame, a vibration system and a magnetic circuit system fixed to the basin frame, and the vibration system includes a diaphragm and a voice coil that drives the diaphragm to vibrate.
  • the diaphragm includes a dome stacked with the voice coil in the vibration direction of the voice coil and a skeleton located on the outer periphery of the dome and spaced from the dome, and the dome includes a main body part and a limiting portion extending from the body portion toward the voice coil and connected to the voice coil, the body portion having an outer surface facing away from the voice coil and an inner surface facing the voice coil, the The frame includes a first connecting part and a second connecting part bent and connected to the first connecting part, the first connecting part has a first connecting part opposite to the first direction from the outer surface to the inner surface. a surface and a second surface, the first surface is flush with the outer surface, there is a gap between the main body part and the first connecting part, the gap is filled with a glue layer to connect the dome and the The first connection portion seals the gap.
  • the limiting portion includes a first bending sub-portion extending from the main body portion toward the voice coil and a second bending sub-portion connecting the voice coil, and the second bending sub-portion is perpendicular to the The peripheral edge of the first bending sub-portion is bent and connected in the first direction.
  • the first bending sub-portion extends from the main body portion toward the voice coil and extends along the first direction.
  • the first bending sub-portion is connected to the periphery of the main body portion by bending from the main body portion toward the voice coil and along the first direction.
  • the gap is filled with a glue layer to connect the dome and the first connecting part and seal the gap.
  • the diaphragm comprises a main sound film located on the outer periphery of the dome, the main sound film comprises a first fixing part connected with the second connecting part and a second fixing part connected with the basin frame; a first folding ring connected to the first fixing part and the second fixing part, the first folding ring has two ends from the first fixing part and the second fixing part towards the first fixing part respectively
  • the first fixing part has a third surface and a fourth surface arranged opposite to each other, and the third surface is flush with the first surface.
  • the second connection part includes a first sub-connection part, a second sub-connection part and two oppositely arranged third sub-connection parts, the second sub-connection part faces the first fixing part and is perpendicular to the Bending in the second direction of the first direction and connected to the peripheral edge of the first sub-connecting portion, the two third sub-connecting portions are respectively directed from a part of the peripheral edge of the second sub-connecting portion toward the first sub-connecting portion.
  • the direction is bent and formed, and the second sub-connection portion is disposed on the fourth surface.
  • the second fixing portion includes a first sub-fixing portion and a second sub-fixing portion, the second sub-fixing portion is bent and connected to the first sub-fixing portion along the first direction, and the basin is connected to the first sub-fixing portion.
  • the frame includes an annular side wall surrounding the periphery of the frame and spaced from the frame, the first fold ring is suspended in the gap formed by the annular side wall and the frame, and the annular side wall has The top surface and the side surface extending from the outer periphery of the top surface toward the first direction, the first sub-fixing portion is attached to the top surface, and the second sub-fixing portion is attached to the side surface.
  • the vibration system further includes a first flexible circuit board and a second flexible circuit board, the first flexible circuit board is connected to one of the third sub-connecting parts, and the second flexible circuit board is connected to the other The third sub-connection part is connected.
  • the thickness of the sounding device can be reduced, and the requirement for the sounding device to be light and thin can be reduced.
  • the dome has a limit part
  • the height space can be fully utilized by changing the height parameter of the limit part of the dome in the first direction, so that the height of the magnetic circuit and the electromagnetic conversion factor of the magnetic circuit can be improved.
  • Fig. 1 is the structural representation of the sounding device provided by the present invention
  • Fig. 2 is the exploded structure schematic diagram of the sounding device shown in Fig. 1;
  • FIG. 3 is a cross-sectional view of the sounding device shown in FIG. 1 along the A-A direction;
  • FIG. 4 is a cross-sectional view of the sounding device shown in FIG. 1 along the B-B direction;
  • FIG. 5 is a partial view of the structure of the dome and the skeleton in the sounding device shown in FIG. 4;
  • Fig. 6 is the three-dimensional structure schematic diagram of the skeleton in the sounding device shown in Fig. 1;
  • Fig. 7 is the three-dimensional structure schematic diagram of the dome in the sounding device shown in Fig. 1;
  • FIG. 8 is a schematic diagram of the three-dimensional structure of the main sound membrane in the sound generating device shown in FIG. 1 .
  • FIG. 1 is a schematic structural diagram of a sounding device provided by the present invention
  • FIG. 2 is a schematic diagram of an explosion structure of the sounding device shown in FIG. 1
  • FIG. 3 is a cross-sectional view of the sounding device shown in FIG. 1 along the A-A direction
  • FIG. 4 is a cross-sectional view of the sounding device shown in FIG. 1 along the B-B direction
  • FIG. 5 is a partial view of the structure of the dome and the skeleton in the sounding device shown in FIG. 4 .
  • the present invention provides a sounding device 100, which includes a fixed system 1, a vibration system 2 and a magnetic circuit system 3, the fixed system 1 can provide support for the vibration system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 can drive the vibration System 2 vibrates and sounds.
  • the vibration system 2 includes a diaphragm 21 and a voice coil 22 for driving the diaphragm 21 to vibrate.
  • the diaphragm 21 includes a dome 211 and a skeleton 212 stacked with the voice coil 22 in the vibration direction of the voice coil 22 .
  • FIG. 7 is a schematic three-dimensional structural diagram of the dome in the sounding device shown in FIG. 1 .
  • the dome 211 includes a main body portion 2111 and a limiting portion 2112 extending from the main body portion 2111 toward the voice coil 22 and connected to the voice coil 22 , wherein the main body portion 2111 may be a plate-like structure.
  • the limiting portion 2112 includes a first bending sub-portion 2112a bent and extended from the body portion 2111 toward the voice coil 22 and a second bending sub-portion 2112b connected to the voice coil 22.
  • the second bending sub-portion 2112b is bent and connected to the voice coil 22 along the first direction. The peripheral edge of the first bent sub-portion 2112a.
  • connection between the main body part 2111 and the first bending sub-part 2112a is not limited to this, and the first bending sub-part 2112a can be bent and extended in the first direction from the main body part 2111 toward the voice coil 22, or the first bending sub-part 2112a can be bent and extended in the first direction.
  • the bending sub-portion 2112a faces the voice coil 22 from the body portion 2111 and is connected to the periphery of the body portion 2111 by being bent along the first direction.
  • first bending sub-section 2112a and the second bending sub-section 2112b are not limited to the first direction, and the second bending sub-section 2112b may be bent in a direction that has a certain angle with the first direction Connected to the peripheral edge of the first bent sub-portion 2112a, the included angle may be any one of greater than or equal to zero and less than ninety degrees.
  • the structure of the limiting portion is not limited to this.
  • the limiting portion 2112 may only include the first bending subsection 2112a, or may include multiple first bending subsections 2112a and multiple second bending subsections 2112b is superimposed.
  • FIG. 6 is a schematic three-dimensional structural diagram of the skeleton in the sounding device shown in FIG. 1.
  • the frame 212 is provided with a through hole 2123, a first connecting portion 2121 surrounding the through hole 2123, and a second connecting portion 2122 bent and connected to the first connecting portion 2121.
  • the first connecting portion 2121 faces the inner surface 2111b from the outer surface 2111a.
  • the first surface 2121a and the second surface 2121b are arranged opposite to each other in the first direction of the .
  • the first surface 2121a is flush with the outer surface 2111a of the dome 211 .
  • the second connection part 2122 includes a first sub-connection part 2122a, a second sub-connection part 2122b and a third sub-connection part 2122c.
  • the first sub-connecting portion 2122a is bent and connected to the first connecting portion 2121 along the first direction
  • the second sub-connecting portion 2122b faces the first fixing portion 2132 and is bent and connected to the first sub-connecting portion along the second direction perpendicular to the first direction.
  • the peripheral edge of the connecting portion 2121, the third sub-connecting portion 2122c is bent in the first direction on a part of the peripheral edge of the second sub-connecting portion 2122b to form the third sub-connecting portion 2122c and the fourth sub-connecting portion 2122d, and the third sub-connecting portion 2122c is formed.
  • the second sub-connecting portion 2122b is protruding from the edge of the first sub-connecting portion 2122a toward the first direction
  • the third sub-connecting portion 2122c is protruding toward the first direction on the edge of the second sub-connecting portion 2122c.
  • the fourth sub-connection portion 2122d protrudes from a portion of the periphery of the second sub-connection portion 2122b toward the first direction on a portion of the periphery of the sub-connection portion 2122b.
  • the skeleton 212 is arranged around the outer circumference of the dome 211 and is spaced from the dome 211, and the first surface 2121a of the skeleton 212 is kept flush with the outer surface 2111a of the dome 211, thereby reducing the number of sound-emitting devices
  • the thickness of 100 millimeters meets the requirements of the sound-emitting device 100 for lightness and thinness, and the dome 211 has a limit portion 2112, and the height space can be fully utilized by changing the height parameter of the limit portion 2112 of the dome 211 in the first direction, so as to make full use of the height space.
  • the height of the magnetic circuit and the electromagnetic conversion factor of the magnetic circuit can be improved.
  • the main body 2111 of the dome 211 is disposed in the through hole 2123 on the frame 212 , and there is a gap between the main body 2111 of the dome 211 and the first connecting part 2121 of the frame 212 .
  • the whole of the diaphragm 21 and the basin frame 12 can enclose a sealed space, so as to realize the sealing of the sound producing device 100 .
  • the skeleton 212 assumes part of the function of the dome 211.
  • the voice coil 22 vibrates, the dome 211 and the skeleton 212 will vibrate synchronously with the voice coil 22, which enhances the sound of the vibration system 2 and effectively reduces vibration caused by vibration. Unbalanced noise.
  • glue can be injected into the gap between the main body portion 2111 of the dome 211 and the first connecting portion 2121 of the skeleton 212, and the glue layer 4 is formed after the glue solidifies.
  • FIG. 8 is a schematic diagram of the three-dimensional structure of the main sound membrane in the sound generating device shown in FIG. 1 .
  • the diaphragm 21 includes a main sound diaphragm 213 located on the outer circumference of the dome 211.
  • the main sound diaphragm 213 includes a first fold ring 2131 and a second fixed part 2133 connected to the first fixing part 2132.
  • the fixing portion 2132 and the second fixing portion 2133 are annular structures that are bent and protruded toward the first direction.
  • the first fixing portion 2132 has a third surface 2132 a and a fourth surface 2132 b disposed opposite to each other, and the third surface 2132 a is flush with the first surface 2121 a of the frame 212 .
  • the second fixing portion 2133 includes a first sub-fixing portion 2133a and a second sub-fixing portion 2133b.
  • the second sub-fixing portion 2133b is bent and connected to the first sub-fixing portion 2133a along the first direction.
  • the second sub-fixing portion 2133b faces toward the first sub-fixing portion 2133a.
  • the first direction is protruded from the first fixing portion 2132 .
  • the vibration system 2 further includes an auxiliary sound film 24, the auxiliary sound film 24 includes a first sound film 24a and a second sound film 24b arranged at intervals, and the first sound film 24a includes a third fixing portion 2142a and a second folding ring 2141a connected in sequence.
  • the second folding ring 2141a is an annular structure with both ends bent and protruding from the third fixing portion 2142a and the fourth fixing portion 2143a towards the first direction, respectively, and the second sound membrane 24b
  • the five fixing parts 2142b, the third fold ring 2141b and the sixth fixing part 2143b, the second fold ring 2141b is a ring structure with two ends bent and protruding from the fifth fixing part 2142b and the sixth fixing part 2143b respectively towards the first direction.
  • the third surface 2132a of the first fixing part 2132 and the first surface 2121a of the skeleton 212 are flush with the outer surface 2111a of the dome 211, and the skeleton 212 is connected to the ball through the filler 4
  • the top 211 is connected, and the skeleton 212 is connected with the main sound membrane 213 through the second sub-connecting part 2122b.
  • the fixing system 1 includes a basin frame 12 and a bottom plate 13 .
  • the basin frame 12 includes an annular side wall 121 surrounding the periphery of the frame 212 and spaced from the frame 212 .
  • the annular side wall 121 has a top surface 121a and a side surface 121b extending from the outer periphery of the top surface toward the first direction.
  • the top surface 121a is attached to the inner side of the first sub-fixing portion 2133a
  • the side surface 121b is attached to the inner side of the second sub-fixing portion 2133b.
  • the vibration system 2 further includes a flexible circuit board 23 , and the flexible circuit board 23 is disposed on the upper surface of the auxiliary sound film 24 close to the main sound film 213 .
  • the flexible circuit board 23 includes a first flexible circuit board 23a and a second flexible circuit board 23b arranged oppositely, the first flexible circuit board 23a includes a pad 231a, a first terminal 232 and a second terminal 233, and the second flexible circuit board 23b includes pads 231b, and the pads 231a and 231b may provide a platform for the connection of the flexible circuit board 23 to other devices.
  • the flexible circuit board 23 includes a seventh surface 2312 and an eighth surface 2313 arranged opposite to each other.
  • the seventh surface 2312 is attached to the lower surface of the annular side wall 121 close to the auxiliary sound film 24, and the first flexible circuit board 23a is connected to the third sub-surface.
  • the second flexible circuit board 23b is connected with the fourth sub-connecting part 2122d, the first sound film 24a is connected with the side of the first flexible circuit board 23a away from the frame 212, and the second sound film 24b is connected with the second flexible circuit
  • the side of the plate 23b away from the frame 212 is connected.
  • the vibration system 2 further includes a voice coil 22 .
  • the voice coil 22 has lead wires 221 and a voice coil body 222 .
  • the lead wires 221 are electrically connected to the pads 231 a , so that the voice coil 22 is electrically connected to the first flexible circuit board 23 .
  • the voice coil body 222 is a closed annular structure with an upper end surface 2221 and a lower end surface 2222 arranged opposite to each other.
  • the voice coil 22 may have two leads, including a first lead 2211 and a second lead 2212, wherein the first lead 2211 can be
  • the upper end surface 2221 of the voice coil 22 is led out to the pad 231 and is electrically connected to the first terminal 232 of the pad 231.
  • the second lead 2212 can be led out from the lower end surface 2222 of the voice coil 22 to the pad 231, and is connected with the solder pad 231.
  • the second terminal 233 of the disk 231 is electrically connected.
  • the magnetic circuit system 3 may include a yoke 33 , a main magnet 31 , a first secondary magnet 321 , a second secondary magnet 322 , a third secondary magnet 323 , a fourth secondary magnet 324 and a pole core 34 .
  • the magnetic yoke 33 is arranged around the outer side of the voice coil 2223 , and the magnetic yoke 33 and the sound membrane 25 are arranged spaced apart from each other.
  • the main magnetic steel 31, the first auxiliary magnetic steel 321, the second auxiliary magnetic steel 322, the third auxiliary magnetic steel 323 and the fourth auxiliary magnetic steel 324 are all fixedly arranged on the side of the magnetic yoke 33 away from the sound film 25,
  • a pair of magnetic steel 321, a second auxiliary magnetic steel 322, a third auxiliary magnetic steel 323 and a fourth auxiliary magnetic steel 324 are arranged around the periphery of the main magnetic steel 31, and the first auxiliary magnetic steel 321, the second auxiliary magnetic steel 322
  • Each of the third auxiliary magnetic steel 323 and the main magnetic steel 31 has a magnetic gap 35 , and the voice coil 2223 is suspended in the magnetic gap 35 .
  • the pole core 34 is disposed in the through hole of the voice coil 2223 , and the pole core 34 is disposed adjacent to the main magnet 31 .
  • the pole core 34 is used to guide the magnetic field generated by the main magnet 31 to the voice coil 2223 .
  • the main magnetic steel 31 can be a regular structure, for example, the main magnetic steel 31 can be a cuboid structure, the first auxiliary magnetic steel 321 and the first side of the main magnetic steel 31 are spaced apart from each other to form a first gap, and the second auxiliary magnetic steel 322 and The second side surfaces of the main magnetic steel 31 are spaced apart from each other to form a second gap, the third auxiliary magnetic steel 323 and the third side surface of the main magnetic steel 31 are spaced apart from each other to form a third gap, and the fourth auxiliary magnetic steel 324 and the main magnetic steel 324 are spaced apart from each other to form a third gap.
  • the fourth sides of the steel 31 are spaced apart from each other to form a fourth gap, and the fourth gap, the third gap, the second gap and the first gap communicate with each other to form the magnetic gap 35 .
  • the first side, the second side, the third side and the fourth side of the main magnet 31 are connected in sequence.
  • the structure of the first auxiliary magnetic steel 321 may be different from that of the second auxiliary magnetic steel 322.
  • the first auxiliary magnetic steel 321 may be a regular cuboid structure
  • the second auxiliary magnetic steel 322 may include a first part and a second part. The second part is provided on the side of the first part.
  • the structure of the third secondary magnetic steel 323 may be the same as that of the first secondary magnetic steel 321
  • the structure of the fourth secondary magnetic steel 324 may be the same as that of the second secondary magnetic steel 322 .
  • the structures of the first secondary magnetic steel 321 , the second secondary magnetic steel 322 , the third secondary magnetic steel 323 and the fourth secondary magnetic steel 324 may also be the same.
  • the structure of the main magnetic steel 31 is not limited to this.
  • the main magnetic steel 31 may also have other regular structures, or the main magnetic steel 31 may also have an irregular structure.
  • the base plate 13 is used to fix the magnetic circuit system 3 .
  • the bottom plate 13 is used to carry the main magnetic steel 31 and the first auxiliary magnetic steel 321 , the second auxiliary magnetic steel 322 , the third auxiliary magnetic steel 323 and the fourth auxiliary magnetic steel 324 .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本发明提供一种发声装置，包括盆架以及固接于盆架的振动系统和磁路系统，振动系统包括振膜和驱动振膜振动的音圈，振膜包括在音圈的振动方向上与音圈层叠设置的球顶和位于球顶外周且与球顶间隔设置的骨架，球顶包括主体部和自主体部朝向音圈延伸且与音圈连接的限位部，主体部具有背向音圈的外表面和朝向音圈的内表面，骨架包括第一连接部和弯折连接于第一连接部的第二连接部，第一连接部具有在外表面朝向内表面的第一方向上相背设置的第一表面和第二表面，第一表面与外表面齐平，主体部与第一连接部之间具有间隙，间隙填充有胶水层以连接球顶和第一连接部并密封间隙。本发明的发声装置可以减小发声装置的厚度。

Description

发声装置
本发明要求于2020年12月18日提交中国专利局、申请号为202011511601.0、发明名称为“发声装置”的中国专利申请的优先权，其全部内容通过引用结合在本发明中。
技术领域
本发明涉及声电转换技术领域，特别涉及一种发声装置。
 背景技术
随着声电转换领域的发展和用户需求的提高，为了实现发声装置对于真实还原音源信号的追求，相关技术中，发声装置包括振动系统、用于驱动振动系统振动发声的磁路系统，以及用于供振动系统和磁路系统安装的盆架，振动系统包括振膜和驱动振膜振动的音圈，振膜包括球顶和支撑球顶的骨架。
但是现有的发声装置中骨架与球顶层叠设置，导致骨架与球顶的层叠部分的厚度较大。因此，有必要提供一种发声装置以解决上述技术问题。
 技术问题
本发明的目的在于提供一种发声装置，可以减小发声装置的厚度。
 技术解决方案
为了达到上述目的，本发明提供一种发声装置，其包括盆架以及固接于所述盆架的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动的音圈，所述振膜包括在所述音圈的振动方向上与所述音圈层叠设置的球顶和位于所述球顶外周且与所述球顶间隔设置的骨架，所述球顶包括主体部和自所述主体部朝向所述音圈延伸且与所述音圈连接的限位部，所述主体部具有背向所述音圈的外表面和朝向所述音圈的内表面，所述骨架包括第一连接部和弯折连接于所述第一连接部的第二连接部，所述第一连接部具有在所述外表面朝向所述内表面的第一方向上相背设置的第一表面和第二表面，所述第一表面与所述外表面齐平，所述主体部与所述第一连接部之间具有间隙，所述间隙填充有胶水层以连接所述球顶和所述第一连接部并密封所述间隙。
优选的，所述限位部包括自所述主体部朝向所述音圈弯折延伸的第一弯折子部和连接所述音圈的第二弯折子部，所述第二弯折子部沿垂直于所述第一方向弯折连接于所述第一弯折子部的周缘。
优选的，所述第一弯折子部自所述主体部朝向所述音圈且沿所述第一方向弯折延伸。
优选的，所述第一弯折子部自所述主体部朝向所述音圈且沿所述第一方向弯折连接于所述主体部的周缘。
优选的，所述主体部与所述第一连接部之间具有间隙，所述间隙填充有胶水层以连接所述球顶和所述第一连接部并密封所述间隙。
优选的，所述振膜包括位于所述球顶外周的主音膜，所述主音膜包括与所述第二连接部相连接的第一固定部和与所述盆架连接的第二固定部以及连接于所述第一固定部和所述第二固定部的第一折环，所述第一折环为两端分别从所述第一固定部和所述第二固定部朝所述第一方向弯曲设置的环形结构，所述第一固定部具有相背设置的第三表面和第四表面，所述第三表面与所述第一表面齐平。
优选的，所述第二连接部包括第一子连接部、第二子连接部和两个相对设置的第三子连接部，所述第二子连接部朝向所述第一固定部并沿垂直于所述第一方向的第二方向弯折连接于所述第一子连接部的周缘，所述两个第三子连接部分别自所述第二子连接部的部分周缘朝所述第一方向弯折形成，所述第二子连接部设置在所述第四表面上。
优选的，所述第二固定部包括第一子固定部和第二子固定部，所述第二子固定部沿所述第一方向弯折连接于所述第一子固定部，所述盆架包括围绕在所述骨架周缘且与所述骨架间隔设置的环形侧壁，所述第一折环悬置于所述环形侧壁与所述骨架所形成的间隙内，所述环形侧壁具有顶面和自顶面的外周缘朝第一方向延伸的侧面，所述第一子固定部与所述顶面贴合，所述第二子固定部与所述侧面贴合。
优选的，所述振动系统还包括第一柔性电路板和第二柔性电路板，所述第一柔性电路板与其中一个所述第三子连接部连接，所述第二柔性电路板与另一个所述第三子连接部连接。
 有益效果
本发明的有益效果在于：
通过将骨架环设在所述球顶的外周且与所述球顶间隔设置，并保持骨架的第一表面与球顶的外表面齐平，可以减少发声装置的厚度，满足发声装置对于轻薄化的需求，而且球顶具有限位部，可以通过改变球顶的限位部在第一方向上的高度参数来充分利用高度空间，从而可以提升磁路高度和磁路电磁转换因子。
 附图说明
图1为本发明提供的发声装置的结构示意图；
图2为图1所示发声装置的爆炸结构示意图；
图3为图1所示发声装置沿A-A方向的剖视图；
图4为图1所示发声装置沿B-B方向的剖视图；
图5为图4所示发声装置中球顶和骨架的结构局部图；
图6为图1所示发声装置中骨架的立体结构示意图；
图7为图1所示发声装置中球顶的立体结构示意图；
图8为图1所示发声装置中主音膜的立体结构示意图。
 本发明的实施方式
下面将结合本发明中的附图，对本发明中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1至图5，图1为本发明提供的发声装置的结构示意图；图2为图1所示发声装置的爆炸结构示意图，图3为图1所示发声装置沿A-A方向的剖视图，图4为图1所示发声装置沿B-B方向的剖视图，图5为图4所示发声装置中球顶和骨架的结构局部图。
本发明提供了一种发声装置100，其包括固定系统1、振动系统2和磁路系统3，固定系统1可以为振动系统2和磁路系统3提供支撑，磁路系统3可以驱动所述振动系统2振动发声。
振动系统2包括振膜21和驱动振膜21振动的音圈22，振膜21包括在音圈22的振动方向上与音圈22层叠设置的球顶211和骨架212。具体结合图2和图7所示，图7为图1所示发声装置中球顶的立体结构示意图。球顶211包括主体部2111和自主体部2111朝向音圈22延伸且与音圈22连接的限位部2112，其中，主体部2111可以为板状结构，在一些具体的实施例中，主体部2111可以为长方形板状结构，也可以为圆角矩形板状结构。主体部2111具有背向音圈22的外表面2111a和朝向音圈22的内表面2111b。限位部2112包括自主体部2111朝向音圈22弯折延伸的第一弯折子部2112a和连接音圈22的第二弯折子部2112b，第二弯折子部2112b沿第一方向弯折连接于第一弯折子部2112a的周缘。
其中，主体部2111与第一弯折子部2112a的连接方式并不限于此，可以是第一弯折子部2112a自主体部2111朝向音圈22且沿第一方向弯折延伸，也可以是第一弯折子部2112a自主体部2111朝向音圈22且沿第一方向弯折连接于主体部2111的周缘。
需要说明的是，第一弯折子部2112a和第二弯折子部2112b的相对弯折方向不限于第一方向，可以是第二弯折子部2112b沿与第一方向存在一定夹角的方向弯折连接于第一弯折子部2112a的周缘，该夹角可以是大于等于零且小于九十度中的某一种。
还需要说明的是，限位部的结构并不限于此，比如限位部2112可以只包括第一弯折子部2112a，也可以包括多个第一弯折子部2112a和多个第二弯折子部2112b叠加形成。
具体结合图2和图6所示，图6为图1所示发声装置中骨架的立体结构示意图。骨架212设置有通孔2123、围设在通孔2123周围的第一连接部2121和弯折连接于第一连接部2121的第二连接部2122，第一连接部2121在外表面2111a朝向内表面2111b的第一方向上具有相背设置的第一表面2121a和第二表面2121b，第一表面2121a与球顶211的外表面2111a齐平。第二连接部2122包括第一子连接部2122a、第二子连接部2122b和第三子连接部2122c。第一子连接部2122a沿第一方向弯折连接于第一连接部2121，第二子连接部2122b朝向第一固定部2132并沿垂直于第一方向的第二方向弯折连接于第一子连接部2121的周缘，第三子连接部2122c在第二子连接部2122b的部分周缘上朝第一方向弯折形成第三子连接部2122c和第四子连接部2122d，且第三子连接部2122c和第四子连接部2122d的位置相对设置，第二子连接部2122b朝第一方向凸设于第一子连接部2122a的边缘，第三子连接部2122c朝第一方向凸设于第二子连接部2122b的部分周缘，第四子连接部2122d朝第一方向凸设于第二子连接部2122b的部分周缘。
本发明通过将骨架212环设在所述球顶211的外周且与所述球顶211间隔设置，并保持骨架212的第一表面2121a与球顶211的外表面2111a齐平，可以减少发声装置100的厚度，满足发声装置100对于轻薄化的需求，而且球顶211具有限位部2112，可以通过改变球顶211的限位部2112在第一方向上的高度参数来充分利用高度空间，从而可以提升磁路高度和磁路电磁转换因子。
球顶211与骨架212连接后，球顶211的主体部2111设置于骨架212上的通孔2123内，球顶211的主体部2111与骨架212的第一连接部2121之间具有间隙，此间隙运用胶水层4将球顶211的主体部2111与骨架212的第一连接部2121之间的间隙进行填充，以此连接球顶211和第一连接部2121，使得振膜21整体可以围成一个密封的空间，保证密封性。使得振膜21整体可以与盆架12围成一个密封的空间，实现发声装置100的密封。通过此胶水层4，骨架212承担部分球顶211功能，当音圈22振动时，球顶211和骨架212会随着音圈22同步振动，增强了振动系统2的发声，有效的减少因振动不平衡产生的杂音。
比如，可以采用在球顶211的主体部2111与骨架212的第一连接部2121之间的间隙注射胶水，胶水凝固后形成上述胶水层4。
具体结合图2和图8所示，图8为图1所示发声装置中主音膜的立体结构示意图。振膜21包括位于球顶211外周的主音膜213，主音膜213包括与第一固定部2132连接的第一折环2131和第二固定部2133，第一折环2131为两端分别从第一固定部2132和第二固定部2133朝第一方向弯曲突出设置的环形结构。第一固定部2132具有相背设置的第三表面2132a和第四表面2132b，第三表面2132a与骨架212的第一表面2121a齐平。第二固定部2133包括第一子固定部2133a和第二子固定部2133b，第二子固定部2133b沿所述第一方向弯折连接于第一子固定部2133a，第二子固定部2133b朝第一方向凸设于第一固定部2132。
振动系统2还包括辅助音膜24，辅助音膜24包括间隔设置的第一音膜24a和第二音膜24b，第一音膜24a包括依次连接的第三固定部2142a、第二折环2141a和第四固定部2143a，第二折环2141a为两端分别从第三固定部2142a和第四固定部2143a朝第一方向弯曲凸出设置的环形结构，第二音膜24b包括依次连接的第五固定部2142b、第三折环2141b和第六固定部2143b，第二折环2141b为两端分别从第五固定部2142b和第六固定部2143b朝第一方向弯曲凸出设置的环形结构。
具体结合图3、图4和图5所示，第一固定部2132的第三表面2132a、骨架212的第一表面2121a与球顶211的外表面2111a齐平，骨架212通过填充物4与球顶211连接，骨架212通过第二子连接部2122b与主音膜213连接，当音圈22振动时，实现了骨架212、球顶211和主音膜213的共同振动。
固定系统1包括盆架12和底板13，盆架12包括围绕在骨架212周缘且与骨架212间隔设置的环形侧壁121，第一折环2131悬置于环形侧壁121与骨架212所形成的间隙内，环形侧壁121具有顶面121a和自顶面的外周缘朝第一方向延伸的侧面121b。顶面121a与第一子固定部2133a的内侧贴合，侧面121b与第二子固定部2133b的内侧贴合。
振动系统2还包括柔性电路板23，柔性电路板23设置在辅助音膜24靠近主音膜213的上表面。柔性电路板23包括相对设置的第一柔性电路板23a和第二柔性电路板23b,第一柔性电路板23a包括焊盘231a、第一接线端232和第二接线端233，第二柔性电路板23b包括焊盘231b，焊盘231a和焊盘231b可以为柔性电路板23与其他器件的连接提供平台。柔性电路板23包括相背设置的第七表面2312和第八表面2313，第七表面2312与环形侧壁121靠近辅助音膜24的下表面贴合，第一柔性电路板23a与第三子连接部2122c连接，第二柔性电路板23b与第四子连接部2122d连接，第一音膜24a与第一柔性电路板23a中远离骨架212的一侧连接，第二音膜24b与第二柔性电路板23b中远离骨架212的一侧连接。通过此连接方式，当音圈22振动时，主音膜213和辅助音膜24实现振动同步，增强发声装置100的振动强度。
振动系统2还包括音圈22，音圈22具有引线221和音圈主体222，引线221与焊盘231a电性连接，使得音圈22和第一柔性电路板23电性连接。音圈主体222为封闭的环形结构，具有相背设置的上端面2221与下端面2222，音圈22可以具有两个引线，包括第一引线2211和第二引线2212，其中第一引线2211可以从音圈22的上端面2221引出至焊盘231，且与焊盘231的第一接线端232电性连接，第二引线2212可以从音圈22的下端面2222引出至焊盘231，且与焊盘231的第二接线端233电性连接。
磁路系统3可以包括磁轭33、主磁钢31、第一副磁钢321、第二副磁钢322、第三副磁钢323、第四副磁钢324和极芯34。磁轭33围设在音圈2223的外侧，且磁轭33与音膜25相互间隔设置。
其中，主磁钢31、第一副磁钢321、第二副磁钢322、第三副磁钢323和第四副磁钢324均固定设置在磁轭33中背离音膜25的一面，第一副磁钢321、第二副磁钢322、第三副磁钢323和第四副磁钢324围设在主磁钢31的周缘，且第一副磁钢321、第二副磁钢322、第三副磁钢323均与主磁钢31之间具有磁间隙35，音圈2223悬置于磁间隙35内。极芯34设置在音圈2223的通孔内，而且极芯34与主磁钢31相邻设置，极芯34用于将主磁钢31所产生的磁场导向音圈2223。
主磁钢31可以为规则结构，比如主磁钢31可以为长方体结构，第一副磁钢321与主磁钢31的第一侧面相互间隔设置以形成第一间隙，第二副磁钢322与主磁钢31的第二侧面相互间隔设置以形成第二间隙，第三副磁钢323与主磁钢31的第三侧面相互间隔设置以形成第三间隙，第四副磁钢324与主磁钢31的第四侧面相互间隔设置以形成第四间隙，第四间隙、第三间隙、第二间隙和第一间隙相互连通以形成所述磁间隙35。其中，主磁钢31的第一侧面、第二侧面、第三侧面和第四侧面顺次连接。第一副磁钢321的结构与第二副磁钢322的结构可以不同，比如第一副磁钢321可以为规则的长方体结构，第二副磁钢322可以包括第一部和第二部，第二部设置在第一部的侧面上。第三副磁钢323的结构可以与第一副磁钢321的结构相同，第四副磁钢324的结构可以与第二副磁钢322的结构相同。在其他一些实施例中，第一副磁钢321、第二副磁钢322、第三副磁钢323和第四副磁钢324的结构也可以均相同。
需要说明的是，主磁钢31的结构并不限于此，比如主磁钢31也可以为其他规则结构，或者主磁钢31也可以不规则结构。
另外，底板13用于固定磁路系统3。具体的，底板13用于承载主磁钢31及第一副磁钢321、第二副磁钢322、第三副磁钢323和第四副磁钢324。
以上的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (8)

  1. 一种发声装置，包括盆架以及固接于所述盆架的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动的音圈，其特征在于，所述振膜包括在所述音圈的振动方向上与所述音圈层叠设置的球顶和位于所述球顶外周且与所述球顶间隔设置的骨架，所述球顶包括主体部和自所述主体部朝向所述音圈延伸且与所述音圈连接的限位部，所述主体部具有背向所述音圈的外表面和朝向所述音圈的内表面，所述骨架包括第一连接部和弯折连接于所述第一连接部的第二连接部，所述第一连接部具有在所述外表面朝向所述内表面的第一方向上相背设置的第一表面和第二表面，所述第一表面与所述外表面齐平，所述主体部与所述第一连接部之间具有间隙，所述间隙填充有胶水层以连接所述球顶和所述第一连接部并密封所述间隙。
  2. 根据权利要求1所述的发声装置，其特征在于：所述限位部包括自所述主体部朝向所述音圈弯折延伸的第一弯折子部和连接所述音圈的第二弯折子部，所述第二弯折子部沿垂直于所述第一方向弯折连接于所述第一弯折子部的周缘。
  3. 根据权利要求2所述的发声装置，其特征在于：所述第一弯折子部自所述主体部朝向所述音圈且沿所述第一方向弯折延伸。
  4. 根据权利要求3所述的发声装置，其特征在于：所述第一弯折子部自所述主体部朝向所述音圈且沿所述第一方向弯折连接于所述主体部的周缘。
  5. 根据权利要求1所述的发声装置，所述振膜包括位于所述球顶外周的主音膜，其特征在于：所述主音膜包括与所述第二连接部相连接的第一固定部和与所述盆架连接的第二固定部以及连接于所述第一固定部和所述第二固定部的第一折环，所述第一折环为两端分别从所述第一固定部和所述第二固定部朝所述第一方向弯曲设置的环形结构，所述第一固定部具有相背设置的第三表面和第四表面，所述第三表面与所述第一表面齐平。
  6. 根据权利要求5所述的发声装置，其特征在于：所述第二连接部包括第一子连接部、第二子连接部和两个相对设置的第三子连接部，所述第二子连接部朝向所述第一固定部并沿垂直于所述第一方向的第二方向弯折连接于所述第一子连接部的周缘，所述两个第三子连接部分别自所述第二子连接部的部分周缘朝所述第一方向弯折形成，所述第二子连接部设置在所述第四表面上。
  7. 根据权利要求6所述的发声装置，其特征在于：所述第二固定部包括第一子固定部和第二子固定部，所述第二子固定部沿所述第一方向弯折连接于所述第一子固定部，所述盆架包括围绕在所述骨架周缘且与所述骨架间隔设置的环形侧壁，所述第一折环悬置于所述环形侧壁与所述骨架所形成的间隙内，所述环形侧壁具有顶面和自顶面的外周缘朝第一方向延伸的侧面，所述第一子固定部与所述顶面贴合，所述第二子固定部与所述侧面贴合。
  8. 根据权利要求7所述的发声装置，其特征在于：所述振动系统还包括第一柔性电路板和第二柔性电路板，所述第一柔性电路板与其中一个所述第三子连接部连接，所述第二柔性电路板与另一个所述第三子连接部连接。
PCT/CN2020/141782 2020-12-18 2020-12-30 发声装置 WO2022126776A1 (zh)

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