WO2026021176A1 - 发声单体及电子设备 - Google Patents

发声单体及电子设备

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Publication number
WO2026021176A1
WO2026021176A1 PCT/CN2025/105266 CN2025105266W WO2026021176A1 WO 2026021176 A1 WO2026021176 A1 WO 2026021176A1 CN 2025105266 W CN2025105266 W CN 2025105266W WO 2026021176 A1 WO2026021176 A1 WO 2026021176A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
sound
magnetic
central
generating unit
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.)
Pending
Application number
PCT/CN2025/105266
Other languages
English (en)
French (fr)
Inventor
王建建
杨子坤
郭翔
张军
张成飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
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 Goertek Inc filed Critical Goertek Inc
Publication of WO2026021176A1 publication Critical patent/WO2026021176A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04R9/06—Loudspeakers

Definitions

  • This invention relates to the field of sound generation technology, and more specifically, to a sound-generating unit and electronic device.
  • the purpose of this invention is to provide a sound-generating unit and electronic device to solve the problem that the vibration area and vibration displacement of existing sound-generating units cannot meet the needs of wearable audio products such as OWS headphones.
  • This invention provides a sound-generating unit, comprising: a support; and,
  • a magnetic circuit system connected to the bracket, has a first magnetic gap and a second magnetic gap
  • the vibration system includes a first diaphragm and a second diaphragm connected to both sides of the support, a first voice coil connected to the first diaphragm, and a second voice coil connected to the second diaphragm.
  • the first voice coil is located in the first magnetic gap
  • the second voice coil is located in the second magnetic gap.
  • the first diaphragm includes a first folded ring located on the inner side, a second folded ring located on the outer side of the first folded ring, and a vibrating part disposed between the first folded ring and the second folded ring.
  • the second folded ring is connected to the bracket, the vibrating part is connected to the first voice coil, and the first folded ring is connected to the magnetic circuit system.
  • a through hole is provided at the center of the magnetic circuit system, wherein the first folded ring surrounds the through hole, and the sound waves of the second diaphragm radiate outward through the through hole, and the sound waves of the first diaphragm and the second diaphragm radiate outward on the same side of the sound-generating unit.
  • a preferred structure is that the first diaphragm and the second diaphragm vibrate in the same direction and radiate sound waves of the same phase outward.
  • the magnetic circuit system includes a magnetic yoke, a central magnetic circuit, and side magnetic circuits disposed on the magnetic yoke.
  • the magnetic yoke includes a central yoke plate and a side yoke plate located outside the central yoke plate.
  • the central yoke plate and the side yoke plate are not coplanar, and a connector is provided to connect the central yoke plate and the side yoke plate.
  • the central magnetic circuit is disposed on the central yoke plate and forms a second magnetic gap between it and the side yoke plate.
  • the side magnetic circuit is disposed on the side yoke plate and forms a first magnetic gap between it and the central yoke plate.
  • the through hole passes through the central yoke plate and the central magnetic circuit.
  • the central magnetic circuit includes a central magnet and a central magnetic guide plate
  • the side magnetic circuit includes a side magnet and a side magnetic guide plate
  • a second magnetic gap is formed between the central magnetic guide plate and the side yoke plate
  • a first magnetic gap is formed between the side magnetic guide plate and the central yoke plate
  • the connector is a magnetic yoke plate, or the connector is a magnet.
  • the central yoke plate has an extension that bends and extends toward the first diaphragm, and the extension is connected to the first folded ring; or,
  • the central yoke plate is flat, and a support member is provided on the side of the central yoke plate near the first diaphragm.
  • the support member is connected to the first folded ring.
  • the second diaphragm includes a third folded ring and a reinforcing portion, wherein the third folded ring is disposed around the reinforcing portion, wherein...
  • the outer contour of the reinforcing part is circular, and the diameter of the outer contour is D1.
  • the through hole is circular, and the diameter of the through hole is D2, where D2 ⁇ 0.3D1.
  • the second diaphragm includes a third folded ring and a reinforcing portion, wherein the third folded ring is disposed around the reinforcing portion, wherein...
  • the projection of the through hole along the vibration direction of the vibration system onto a plane perpendicular to the vibration direction has a first projected area S1
  • the projection of the reinforcing part along the vibration direction of the vibration system onto a plane perpendicular to the vibration direction has a second projected area S2, where S1 ⁇ 8.5% * S2.
  • the connector is annular, and a first cavity is formed between the first diaphragm, the bracket, the side yoke, the connector, and the central yoke.
  • the first cavity is a sealed cavity, and a first leakage hole is provided on the sound-generating unit to connect the first cavity with the outside.
  • the central magnetic circuit includes a central magnet and a central magnetic guide plate
  • the side magnetic circuit includes a side magnet and a side magnetic guide plate
  • a second magnetic gap is formed between the central magnetic guide plate and the side yoke plate
  • a first magnetic gap is formed between the side magnetic guide plate and the central yoke plate
  • the side magnetic guide plate is injection molded onto the bracket
  • the first leakage hole is formed by removing material from the side magnetic guide plate and the corresponding bracket area.
  • a preferred structure further includes a back cover, which is located on the side of the second diaphragm away from the first diaphragm, and a second cavity is formed between the second diaphragm and the back cover.
  • a second leakage hole communicating with the second cavity and the outside is provided on the back cover.
  • the present invention also provides an electronic device, comprising a housing having a receiving cavity and a sound-generating unit disposed within the receiving cavity, wherein the sound-generating unit comprises a first diaphragm and a second diaphragm, wherein...
  • the sound-generating unit divides the receiving cavity into a front cavity and a rear cavity that are isolated from each other.
  • a sound outlet hole connected to the front cavity is provided on the housing. The sound waves of the first diaphragm and the second diaphragm are radiated to the outside through the sound outlet hole.
  • the sound-generating unit and electronic device provided by the present invention combine two vibration systems with a magnetic circuit system.
  • the voice coils of the two vibration systems are staggered and cross each other to share a magnetic circuit system.
  • a through hole is provided in the center of the magnetic circuit system.
  • One vibration system is arranged around the through hole, and the sound waves of the diaphragm of the other vibration system radiate outward through the through hole.
  • the sound waves of the two vibration systems radiate outward on the same side of the sound-generating unit.
  • Figure 1 is a schematic diagram of the explosive structure of the sound-generating unit according to Embodiment 1 of the present invention.
  • Figure 2 is a cross-sectional view of the sound-generating unit according to Embodiment 1 of the present invention.
  • Figure 3 is a schematic diagram of the explosive structure of the sound-generating unit according to Embodiment 2 of the present invention.
  • Figure 4 is a cross-sectional view of the sound-generating unit according to Embodiment 2 of the present invention.
  • Figure 5 is a schematic diagram of the explosive structure of the sound-generating unit according to Embodiment 3 of the present invention.
  • Figure 6 is a cross-sectional view of the sound-generating unit according to Embodiment 3 of the present invention.
  • Figure 7 is a schematic diagram of the explosive structure of the sound-generating unit according to Embodiment 4 of the present invention.
  • Figure 8 is a cross-sectional view of the sound-generating unit according to Embodiment 4 of the present invention.
  • Figure 9 is a three-dimensional structural diagram of an electronic device according to an embodiment of the present invention.
  • Figures 10 and 11 are schematic diagrams of the three-dimensional structure of the sound-generating unit according to an embodiment of the present invention.
  • Magnetic circuit system 51. Side magnetic guide plate; 52. Central magnet; 53. Central magnetic guide plate; 54. Side magnet; 55. Magnetic yoke; 551. Central yoke plate; 552. Side yoke plate; 553. Magnetic guide yoke plate; 554. Extension; 10. Support member; 20. Magnet; 30. Through hole.
  • center In the description of this invention, it should be understood that the terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
  • this invention proposes a sound-generating unit and an electronic device.
  • Figures 1 to 8, 10, and 11 exemplarily illustrate the structure of the sound-generating unit from different angles.
  • Figure 1 shows an exploded structure of the sound-generating unit according to Embodiment 1 of the present invention
  • Figure 2 shows a cross-sectional structure of the sound-generating unit according to Embodiment 1 of the present invention
  • Figure 3 shows an exploded structure of the sound-generating unit according to Embodiment 2 of the present invention
  • Figure 4 shows a cross-sectional structure of the sound-generating unit according to Embodiment 2 of the present invention
  • Figure 5 shows an exploded structure of the sound-generating unit according to Embodiment 3 of the present invention
  • Figure 6 shows a cross-sectional structure of the sound-generating unit according to Embodiment 3 of the present invention
  • Figure 7 shows a schematic diagram of an exploded structure of the sound-generating unit according to Embodiment 4 of the present invention
  • Figure 8 shows a cross-sectional structure of the sound-generating unit according to Embodiment 4
  • the sound-generating unit provided by the present invention includes a support 6, a magnetic circuit system 5 and a vibration system.
  • the magnetic circuit system 5 is connected to the support 6 and has a first magnetic gap and a second magnetic gap.
  • the vibration system is connected to the support 6 and includes a first diaphragm 1 and a second diaphragm 2 connected to both sides of the support 6, a first voice coil 3 connected to the first diaphragm 1, and a second voice coil 4 connected to the second diaphragm 2.
  • the first voice coil 3 is located in the first magnetic gap
  • the second voice coil 4 is located within the second magnetic gap.
  • the first diaphragm 1 includes a first folded ring 11 located on the inner side, a second folded ring 12 located on the outer side of the first folded ring 11, and a vibrating part 13 disposed between the first folded ring 11 and the second folded ring 12.
  • the vibrating part 12 is connected to the first voice coil 3, and the first folded ring 11 is connected to the magnetic circuit system 5.
  • a through hole 30 is provided at the center of the magnetic circuit system 5, wherein the first folded ring 11 surrounds the through hole 30, and the sound waves of the second diaphragm 2 radiate outward through the through hole 30, and the sound waves of the first diaphragm 1 and the second diaphragm 2 radiate outward on the same side of the sound-generating unit.
  • the first diaphragm 1 and the second diaphragm 2 vibrate in the same direction and radiate sound waves of the same phase outward, thereby increasing the volume of the sound-producing unit.
  • the support is cylindrical, with the outer contours of the first diaphragm 1 and the second diaphragm 2 roughly aligned, facilitating the standardized design of the speaker's shape and further simplifying assembly within the entire unit, thus reducing the pre-reserved structure of the unit.
  • the support includes a cylindrical first support and a cylindrical second support, which are fitted together to form the cylindrical support.
  • the design of the support into a first and a second support allows for the assembly of the first diaphragm via the first support and the second diaphragm via the second support, facilitating the assembly of the speaker during the assembly process.
  • Conductive terminals can also be provided on the first and second supports respectively, allowing for convenient electrical connection of the first and second voice coils to external circuits.
  • the magnetic circuit system 5 includes a magnetic yoke 55, a central magnetic circuit and a side magnetic circuit disposed on the magnetic yoke 55.
  • the magnetic yoke 55 includes a central yoke plate 551 and a side yoke plate 552 located outside the central yoke plate 551.
  • the central yoke plate 551 and the side yoke plate 552 are not coplanar.
  • a connector is provided to connect the central yoke plate 551 and the side yoke plate.
  • the central magnetic circuit is disposed on the central yoke plate 551 and forms a second magnetic gap with the side yoke plate 552.
  • the side magnetic circuit is disposed on the side yoke plate 552 and forms a first magnetic gap with the central yoke plate 551.
  • the through hole 30 penetrates the central yoke plate 551 and the central magnetic circuit.
  • the central magnetic circuit includes a central magnet 52 and a central magnetic guide plate 53
  • the side magnetic circuit includes a side magnet 54 and a side magnetic guide plate 51.
  • a second magnetic gap is formed between the central magnetic guide plate 53 and the side yoke plate 552
  • a first magnetic gap is formed between the side magnetic guide plate 51 and the central yoke plate 551.
  • the connector is a magnetic yoke plate 553, which can be integrated with the central yoke plate 551 and the side yoke plate 552 for easy processing and manufacturing; or, in another embodiment, the connector is a magnet 20, which can further improve the magnetic field performance of the magnetic circuit system 5.
  • the connector is a magnetic yoke plate 553; in Embodiment 3 ( Figures 5 and 6) and Embodiment 4 ( Figures 7 and 8), the connector is a magnet 20, which is a ring magnet. In specific applications, a suitable connector can be selected according to the actual situation.
  • the central yoke 551 has an extension 554 that bends and extends towards the first diaphragm 1, and the extension 554 is connected to the first folded ring 11.
  • the central yoke 551 is integrally formed with the extension 554 connected to the inner edge of the first folded ring 11, which helps to simplify the number of components and improve the positioning accuracy during assembly.
  • the central yoke 551 is flat, and a support member 10 is provided on the side of the central yoke 551 near the first diaphragm 1.
  • the support member 10 is connected to the first folded ring 11.
  • the first folded ring 11 is connected to the central yoke 551 through the support member 10, which reduces the processing difficulty of the magnetic yoke 55 and facilitates assembly.
  • Embodiment 1 Figures 1 and 2) and Embodiment 3 ( Figures 5 and 6)
  • the extension 544 and the central yoke plate 551 are integrally formed.
  • Embodiment 2 Figures 3 and 4) and Embodiment 4 ( Figures 7 and 8)
  • the central yoke plate 551 and the support member 10 are not integrally designed; the support member 10 is a ring structure and is connected to the first folding ring 11.
  • a suitable design structure can be selected according to the actual situation, and it is not limited to a certain method.
  • the second diaphragm 2 includes a third fold ring 21 and a reinforcing portion 22.
  • the third fold ring 21 is arranged around the reinforcing portion 22.
  • the outer contour of the reinforcing portion 22 is circular, and the diameter of the outer contour is D1.
  • the through hole 30 is a circular hole, and the diameter of the through hole 30 is D2, where D2 ⁇ 0.3D1.
  • the diameters of the reinforcing portion 22 and the through hole 30 directly affect the transmission of sound waves from the second diaphragm.
  • the projection of the through hole 30 along the vibration direction of the vibration system onto a plane perpendicular to the vibration system can be defined as the first projected area S1
  • the projection of the reinforcing part 22 along the vibration direction of the vibration system onto a plane perpendicular to the vibration system can be defined as the second projected area S2, where S1 ⁇ 8.5% * S2.
  • This design of the projected area ensures smooth sound wave transmission from the second diaphragm 2 and reduces airflow noise.
  • a suitable structural design should be selected based on actual needs to ensure smooth sound wave transmission from the second diaphragm 2 and reduce airflow noise.
  • the connector is annular, and a first cavity is formed between the first diaphragm 1, the bracket 6, the side yoke 552, the connector, and the central yoke 551.
  • the first cavity is a sealed cavity, and a first leakage hole 61 communicating with the outside is provided on the sound-generating unit.
  • the central magnetic circuit includes a central magnet 52 and a central magnetic guide plate 53
  • the side magnetic circuit includes a side magnet 54 and a side magnetic guide plate 51.
  • a second magnetic gap is formed between the central magnetic guide plate 53 and the side yoke plate 552
  • a first magnetic gap is formed between the side magnetic guide plate 51 and the central yoke plate 551.
  • the side magnetic guide plate 51 is injection molded onto the bracket 6, and the first leakage hole 61 is formed by removing material from the side magnetic guide plate 51 and the corresponding bracket area.
  • the first leakage hole 61 does not additionally occupy the radial dimension of the sound-generating unit in order to maximize the radial dimension of the sound-generating unit, or the size of the leakage hole can be increased within the limited size of the sound-generating unit to balance the internal pressure.
  • the sound-generating unit also includes a back cover 8, which is located on the side of the second diaphragm 2 away from the first diaphragm 1.
  • a second cavity is formed between the second diaphragm 2 and the back cover 8.
  • a second leakage hole 81 communicating with the second cavity and the outside is provided on the back cover 8.
  • the back cover is made of metal, which facilitates strong support for the sound-generating unit during assembly while also reducing its footprint on the overall unit size.
  • the number of leakage holes is set according to the actual situation and is not limited to a fixed number.
  • positioning rings for positioning can be provided between the second folding ring 12, the third folding ring 22 and the bracket 6, and between the first folding ring 11 and the support member 10.
  • the positioning rings can be steel rings.
  • a first positioning ring 71 for positioning is provided between the second folding ring 12 and the bracket 6
  • a second positioning ring 72 for positioning is provided between the third folding ring 22 and the bracket 6
  • a third positioning ring 73 for positioning is provided between the first folding ring 11 and the support member 10.
  • the present invention also provides an electronic device, comprising a housing having a receiving cavity and a sound-generating unit disposed within the receiving cavity, wherein the housing includes an upper shell 91 and a lower shell 92, and the sound-generating unit includes a first diaphragm 1 and a second diaphragm 2, wherein the sound-generating unit divides the receiving cavity into a mutually isolated front cavity and a rear cavity.
  • a sound outlet 911 communicating with the front cavity is provided on the upper shell 91 of the housing, and sound waves from the first diaphragm 1 and the second diaphragm 2 are radiated to the outside through the sound outlet 911.
  • a third leakage hole 921 is provided on the lower shell 92 of the housing for adjusting the pressure in the rear cavity.
  • the housing of the electronic device can be a square structure.
  • other suitable structures such as circles can be selected according to the actual situation, and it is not limited to a specific shape.
  • the specific structure of the sound-generating unit is as described in the above embodiments. Since the electronic device adopts all the technical solutions of all the above embodiments, it has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.
  • the sound-generating unit and electronic device provided by the present invention combine two vibration systems with a magnetic circuit system.
  • the voice coils of the two vibration systems are staggered and cross each other to share a magnetic circuit system.
  • a through hole is provided in the center of the magnetic circuit system.
  • One vibration system is arranged around the through hole, and the sound waves of the diaphragm of the other vibration system radiate outward through the through hole.
  • the sound waves of the two vibration systems radiate outward on the same side of the sound-generating unit, thereby achieving double-sided unidirectional sound generation without increasing the external size, and increasing the vibration area of the vibration system, thereby achieving the purpose of performance improvement.

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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

本发明提供一种发声单体及电子设备，发声单体包括支架；磁路系统，与支架相连接，具有第一磁间隙和第二磁间隙；振动系统包括与支架两侧相连接的第一振膜和第二振膜，与第一振膜、第二振膜相连接第一音圈、第二音圈，第一音圈、第二音圈分别位于第一磁间隙、第二磁间隙内；第一振膜包括第一折环、第二折环以及振动部，振动部与第一音圈相连接，第一折环与磁路系统相连接；在磁路系统的中心设置有贯通孔，第一折环环绕贯通孔，第二振膜的声波经贯通孔向外辐射，且第一振膜和第二振膜的声波在发声单体的同一侧向外辐射。利用本发明，能够解决现有的发声单体的振动面积与振动位移满足不了OWS耳机等穿戴音频产品需求的问题。

Description

发声单体及电子设备 技术领域
本发明涉及发声技术领域，更为具体地，涉及一种发声单体及电子设备。
背景技术
近些年来随着智能穿戴电子产品的发展，智能穿戴产品对单体性能要求越来越高，特别是OWS(Open Wearable Stereo，中文含义为全开放穿戴式耳机)蓝牙耳机的要求与TWS(True Wireless Stereo，中文含义为真无线立体声)有所不同，因为整机为体现佩戴的方便与舒适性所以采用不入耳的方式从而对发声单体的性能提升迫在眉睫。
传统的Driver设计均为单面振动发声，在有限整机的腔体中，振动面积与振动位移很难做到加大设计，或者在一些双面振膜的结构中，导音通道常常设置在发声单体周边，占用较大发声单体径向尺寸，导致振动系统设计空间减小，进而振动面积减小，因此发声单体的性能提升的空间也比较有限，满足不了现有OWS等穿戴音频产品的需求。
发明内容
鉴于上述问题，本发明的目的是提供一种发声单体及电子设备，以解决现有的发声单体的振动面积与振动位移满足不了OWS耳机等穿戴音频产品需求的问题。
本发明提供一种发声单体，包括：支架；以及，
磁路系统，与所述支架相连接，具有第一磁间隙和第二磁间隙；
振动系统，包括与所述支架两侧相连接的第一振膜和第二振膜，与所述第一振膜相连接的第一音圈、与所述第二振膜相连接第二音圈，所述第一音圈位于所述第一磁间隙，所述第二音圈位于所述第二磁间隙；其中，
所述第一振膜包括位于内侧的第一折环、位于所述第一折环外侧的第二折环以及设置在所述第一折环与所述第二折环之间的振动部，所述第二折环与所述支架相连接，所述振动部与所述第一音圈相连接，所述第一折环与所述磁路系统相连接；
在所述磁路系统的中心设置有贯通孔，其中，所述第一折环环绕所述贯通孔，所述第二振膜的声波经所述贯通孔向外辐射，且所述第一振膜和所述第二振膜的声波在所述发声单体的同一侧向外辐射。
此外，优选的结构是，所述第一振膜和所述第二振膜同向振动，并向外辐射相同相位的声波。
此外，优选的结构是，所述磁路系统包括磁轭、设置在所述磁轭上的中心磁路和边磁路，所述磁轭包括中心轭板、位于所述中心轭板外侧的边轭板，所述中心轭板与所述边轭板不共面，且设有连接件连接所述中心轭板和所述边轭板；其中，
所述中心磁路设于中心轭板且与所述边轭板之间形成所述第二磁间隙，所述边磁路设于所述边轭板且与所述中心轭板之间形成所述第一磁间隙，所述贯通孔贯通所述中心轭板和所述中心磁路。
此外，优选的结构是，所述中心磁路包括中心磁铁和中心导磁板，所述边磁路包括边磁铁和边导磁板，所述中心导磁板与所述边轭板之间形成所述第二磁间隙，所述边导磁板和所述中心轭板之间形成所述第一磁间隙；且/或，
所述连接件为导磁轭板，或者，所述连接件为磁铁。
此外，优选的结构是，所述中心轭板具有向靠近所述第一振膜的方向弯折延伸的延伸部，所述延伸部与所述第一折环相连接；或者，
所述中心轭板为平板状，所述中心轭板靠近所述第一振膜的一侧设有支撑件，所述支撑件与所述第一折环相连接。
此外，优选的结构是，所述第二振膜包括第三折环和补强部，所述第三折环环绕所述补强部设置，其中，
所述补强部的外轮廓为圆形，所述外轮廓的直径为D1，所述贯通孔为圆形孔，所述贯通孔的直径为D2，D2≥0.3D1。
此外，优选的结构是，所述第二振膜包括第三折环和补强部，所述第三折环环绕所述补强部设置，其中，
所述贯通孔沿所述振动系统的振动方向向与所述振动方向相垂直的平面的投影具有第一投影面积S1，所述补强部沿所述振动系统的振动方向向与所述振动方向相垂直的平面的投影具有第二投影面积S2，S1≥8.5％*S2。
此外，优选的结构是，所述连接件为环形，所述第一振膜、所述支架、所述边轭板、所述连接件和所述中心轭板之间形成第一腔体，所述第一腔体为密闭腔体，在所述发声单体上设有连通所述第一腔体与外部的第一泄露孔。
此外，优选的结构是，所述中心磁路包括中心磁铁和中心导磁板，所述边磁路包括边磁铁和边导磁板，所述中心导磁板与所述边轭板之间形成所述第二磁间隙，所述边导磁板和所述中心轭板之间形成所述第一磁间隙，所述边导磁板注塑于所述支架上，所述第一泄露孔由所述边导磁板和对应的支架区域去料形成。
此外，优选的结构是，还包括后盖，所述后盖位于所述第二振膜远离所述第一振膜的一侧，所述第二振膜和所述后盖之间形成第二腔体，在所述后盖上设置有连通所述第二腔体和外部的第二泄露孔。
本发明还提供一种电子设备，包括具有收容腔的壳体和设置在所述收容腔内的发声单体，其中，所述发声单体上述发声单体，所述发声单体包括第一振膜和第二振膜，其中，
所述发声单体将所述收容腔分隔为相互隔离的前腔和后腔，在所述壳体上设置有与所述前腔相连通的出声孔，所述第一振膜和第二振膜的声波经所述出声孔向外界辐射。
从上面的技术方案可知，本发明提供的发声单体及电子设备，通过两个振动系统与一个磁路系统相互结合，两个振动系统的音圈错位交叉共同一个磁路系统，在磁路系统的中心设置有贯通孔，其中一个振动系统环绕贯通孔设置，另一个振动系统的振膜的声波经贯通孔向外辐射，且两个振动系统的声波在发声单体的同一侧向外辐射，从而在不增加外形尺寸的前提下实现双面振膜同向发声，且增大了振动系统的振动面积，从而达到性能提升的目的。
为了实现上述以及相关目的，本发明的一个或多个方面包括后面将详细说明的特征。下面的说明以及附图详细说明了本发明的某些示例性方面。然而，这些方面指示的仅仅是可使用本发明的原理的各种方式中的一些方式。此外，本发明旨在包括所有这些方面以及它们的等同物。
附图说明
通过参考以下结合附图的说明的内容，并且随着对本发明的更全面理解，本发明的其它目的及结果将更加明白及易于理解。在附图中：
图1为根据本发明实施例一的发声单体爆炸结构示意图；
图2为根据本发明实施例一的发声单体剖视图；
图3为根据本发明实施例二的发声单体爆炸结构示意图；
图4为根据本发明实施例二的发声单体剖视图；
图5为根据本发明实施例三的发声单体爆炸结构示意图；
图6为根据本发明实施例三的发声单体剖视图；
图7为根据本发明实施例四的发声单体爆炸结构示意图；
图8为根据本发明实施例四的发声单体剖视图；
图9为根据本发明实施例的电子设备立体结构示意图；
图10、图11分别为本发明实施例的发声单体立体结构示意图。
其中的附图标记包括：1、第一振膜，11、第一折环、12、第二折环、13、振动部，
2、第二振膜，21、第三折环，22、补强部，
3、第一音圈，4、第二音圈，
5、磁路系统，51、边导磁板，52、中心磁铁，53、中心导磁板，54、边磁铁，55、磁轭，551、中心轭板，552、边轭板，553、导磁轭板，554、延伸部，10、支撑件，20、磁铁，30、贯通孔，
6、支架，61、第一泄漏孔，
71、第一定位环，72、第二定位环，73、第三定位环，
8、后盖，81、第二泄漏孔，
91、上壳，92、下壳、911、出声孔，921、第三泄漏孔。
在所有附图中相同的标号指示相似或相应的特征或功能。
具体实施方式
在下面的描述中，出于说明的目的，为了提供对一个或多个实施例的全面理解，阐述了许多具体细节。然而，很明显，也可以在没有这些具体细节的情况下实现这些实施例。在其它例子中，为了便于描述一个或多个实施例，公知的结构和设备以方框图的形式示出。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
针对前述提出的解决现有的发声单体的振动面积与振动位移满足不了OWS耳机等穿戴音频产品需求的问题，本发明提出了一种发声单体及电子设备。
以下将结合附图对本发明的具体实施例进行详细描述。
为了说明本发明提供的发声单体的结构，图1至图8、图10和图11分别从不同角度对发声单体的结构进行了示例性标示。具体地，图1示出了根据本发明实施例一的发声单体爆炸结构示；图2示出了根据本发明实施例一的发声单体剖视结构；图3示出了根据本发明实施例二的发声单体爆炸结构；图4示出了根据本发明实施例二的发声单体剖视结构；图5示出了根据本发明实施例三的发声单体爆炸结构；图6示出了根据本发明实施例三的发声单体剖视结构；图7示出了根据本发明实施例四的发声单体爆炸结构示意图；图8示出了根据本发明实施例四的发声单体剖视结构；图10、图11分别示出了本发明实施例的发声单体立体结构。
如图1至图8、图10和图11共同所示，本发明提供的发声单体，包括支架6、磁路系统5和振动系统，磁路系统5与所述支架6相连接，磁路系统5具有第一磁间隙和第二磁间隙；
振动系统与所述支架6相连接，包括与所述支架6两侧相连接的第一振膜1和第二振膜2、与所述第一振膜1相连接的第一音圈3、与所述第二振膜2相连接第二音圈4，所述第一音圈3位于所述第一磁间隙，所述第二音圈4位于所述第二磁间隙内；其中，所述第一振膜1包括位于内侧的第一折环11、位于第一折环11外侧的第二折环12以及设置在所述第一折环11与所述第二折环12之间的振动部13，所述振动部12与所述第一音圈3相连接，所述第一折环11与所述磁路系统5相连接；
在所述磁路系统5的中心设置有贯通孔30，其中，所述第一折环11环绕所述贯通孔30，所述第二振膜2的声波经所述贯通孔30向外辐射，且所述第一振膜1和所述第二振膜2的声波在发声单体的同一侧向外辐射。
其中，所述第一振膜1和所述第二振膜2同向振动，并向外辐射相同相位的声波，如此，可提升发声单体的音量。
可选地，支架为筒状，第一振膜1和第二振膜2的外周轮廓大致相齐，便于发声单体外形的规则化设计，进一步便于组装于整机内，简化整机的预留结构。进一步可选地，支架包括筒状的第一支架和筒状的第二支架，第一支架和第二支架适配连接组成筒状支架；设计支架分为第一支架和第二支架，可通过第一支架组装第一振膜，第二支架组装第二振膜，便于发声单体在装配过程中的组装，也可在第一支架和第二支架上分别设置导电端子，进而方便第一音圈和第二音圈分别与外部电路电连接等。
在一实施例中，所述磁路系统5包括磁轭55、设于所述磁轭55上的中心磁路和边磁路，其中，所述磁轭55包括中心轭板551、位于所述中心轭板551外侧的边轭板552，其中，所述中心轭板551与所述边轭板552不共面，设有连接件连接所述中心轭板551和所述边轭板，所述中心磁路设于中心轭板551且与所述边轭板552之间形成所述第二磁间隙，所述边磁路设于所述边轭板552且与所述中心轭板551之间形成所述第一磁间隙，所述贯通孔30贯通所述中心轭板551和所述中心磁路。
其中，所述中心磁路包括中心磁铁52和中心导磁板53，所述边磁路包括边磁铁54和边导磁板51，所述中心导磁板53与所述边轭板552之间形成所述第二磁间隙，所述边导磁板51和所述中心轭板551之间形成第一磁间隙。
在一实施例中，所述连接件为导磁轭板553，导磁轭板553可以与中心轭板551、边轭板552一体设计，便于加工制作；或者，在另一实施例中，所述连接件为磁铁20，如此可以进一步提升磁路系统5的磁场性能。
在实施例一(图1和图2)和实施例二(图3和图4)中，连接件为导磁轭板553；在实施例三(图5和图6)和实施例四(图7和图8)中，所述连接件为磁铁20，磁铁20为环形磁铁。在具体应用中，可以根据实际情况，选择合适的连接件。
其中，所述中心轭板551具有向靠近所述第一振膜1的方向弯折延伸的延伸部554，所述延伸部544与所述第一折环11相连接；中心轭板551一体成型出延伸部554与第一折环11的内边缘连接，有利于简化零组件的个数，提升组装过程中的定位精度。或者，所述中心轭板551为平板状，所述中心轭板551靠近所述第一振膜1的一侧设有支撑件10，所述支撑件10与所述第一折环11相连接；设置第一折环11通过支撑件10与中心轭板551连接，降低磁轭55的加工难度，便于组装。
在实施例一(图1和图2)和实施例三(图5和图6)中，延伸部544与中心轭板551为一体成型设计。在实施例二(图3和图4)和实施例四(图7和图8)中，所述中心轭板551、支撑件10不是一体设计结构，支撑件10是环形结构，支撑件10与第一折环11相连接。在具体应用中，可以根据实际情况，选择合适的设计结构，并不局限于某一种方式。
在本发明的实施例中，所述第二振膜2包括第三折环21和补强部22，所述第三折环21环绕所述补强部22设置，其中，所述补强部22的外轮廓为圆形，所述外轮廓的直径为D1，所述贯通孔30为圆形孔，所述贯通孔30的直径为D2，D2≥0.3D1。补强部22的直径大小与贯通孔30的直径大小直接影响第二振膜声波的传出，通过上述直径设计方式，能够保证第二振膜2声波顺利传出，减少气流音。
或者，将所述贯通孔30沿所述振动系统的振动方向向与所述振动系统垂直的平面的投影定义为第一投影面积S1，将所述补强部22沿所述振动系统的振动方向向与所述振动系统垂直的平面的投影定义为第二投影面积S2，并且S1≥8.5％*S2。通过上述投影面积的设计方式，能够保证第二振膜2声波顺利传出，减少气流音。在具体应用中，根据实际需求，选择合适的结构设计，以满足第二振膜2声波顺利传出，并减少气流音。
在本发明的实施例中，所述连接件为环形，所述第一振膜1、所述支架6、所述边轭板552、所述连接件、所述中心轭板551之间形成第一腔体，所述第一腔体为密闭腔体，在发声单体上设置有连通所述第一腔体与外部的第一泄露孔61。优选地，第一泄露孔61为多个，多个第一泄露孔61沿发声单体的周向对称设置。
可选地，所述中心磁路包括中心磁铁52和中心导磁板53，所述边磁路包括边磁铁54和边导磁板51，所述中心导磁板53与所述边轭板552之间形成所述第二磁间隙，所述边导磁板51和所述中心轭板551之间形成第一磁间隙，所述边导磁板51注塑于所述支架6上，所述第一泄露孔61由所述边导磁板51和对应的支架区域去料形成。在本发明的实施例中，通过在边导磁板51与支架6去料，第一泄露孔61不额外占用发声单体的径向尺寸以便最大化发声单体的径向尺寸，或者可以在有限的发声单体的尺寸下增大泄露孔的尺寸，以平衡内部压力。
其中，发声单体还包括后盖8，所述后盖8位于所述第二振膜2远离所述第一振膜1的一侧，所述第二振膜2和所述后盖8之间形成第二腔体，在所述后盖8上设有连通所述第二腔体和外部的第二泄露孔81。其中，后盖为金属材质，便于在发声单体的装配过程中有力地支撑发声单体同时也减小对整机尺寸的占用。在具体应用中，根据实际情况设定合适数量的泄漏孔，并不局限于固定的数量。
此外，在本发明的实施例中，在所述第二折环12、所述第三折环22与所述支架6之间、在所述第一折环11与所述支撑件10之间均可以设置有用于定位的定位环。具体地，定位环可以是钢环。具体地，在所述第二折环12与所述支架6之间设置用于定位的第一定位环71，在第三折环22与所述支架6之间设置有用于定位的第二定位环72，在所述第一折环11与所述支撑件10之间设置有用于定位的第三定位环73，通过采用定位环从而使得第一振膜1或者第二振膜2在装配过程中便于拿取，且同时提升装配的精度，提升发声单体性能。
本发明还提供一种电子设备，包括具有收容腔的壳体和设置在所述收容腔内的发声单体，其中，壳体包括上壳91和下壳92，所述发声单体包括第一振膜1和第二振膜2，其中，所述发声单体将所述收容腔分隔为相互隔离的前腔和后腔，在图9所示的实施例中，在所述壳体的上壳91上设置有与所述前腔相连通的出声孔911，所述第一振膜1和第二振膜2的声波经所述出声孔911向外界辐射。在所述壳体的下壳92上设置有第三泄漏孔921，用于调节后腔内的压力。
在本发明的实施例中，电子设备的壳体的现状可以为方形结构，在具体应用中，可根据实际情况选择圆形等其他合适的现状，并不局限于某种具体的形状。
其中，发声单体的具体结构参照上述实施例，由于电子设备采用了上述所有实施例的全部技术方案，因此具有上述实施例的技术方案所带来的所有的有益效果，在此不再一一赘述。
通过上述实施方式可以看出，本发明提供的发声单体及电子设备，通过两个振动系统与一个磁路系统相互结合，两个振动系统的音圈错位交叉共同一个磁路系统，在磁路系统的中心设置有贯通孔，其中一个振动系统环绕贯通孔设置，另一个振动系统的振膜的声波经贯通孔向外辐射，且两个振动系统的声波在发声单体的同一侧向外辐射，从而在不增加外形尺寸的前提下实现双面同向发声，且增大了振动系统的振动面积，从而达到性能提升的目的。
如上参照附图以示例的方式描述了根据本发明提出的发声单体及电子设备。但是，本领域技术人员应当理解，对于上述本发明所提出的发声单体及电子设备，还可以在不脱离本发明内容的基础上做出各种改进。因此，本发明的保护范围应当由所附的权利要求书的内容确定。

Claims (11)

  1. 一种发声单体，其特征在于，包括支架；以及，
    磁路系统，与所述支架相连接，具有第一磁间隙和第二磁间隙；
    振动系统，包括与所述支架两侧相连接的第一振膜和第二振膜，与所述第一振膜相连接的第一音圈、与所述第二振膜相连接第二音圈，所述第一音圈位于所述第一磁间隙，所述第二音圈位于所述第二磁间隙；其中，
    所述第一振膜包括位于内侧的第一折环、位于所述第一折环外侧的第二折环以及设置在所述第一折环与所述第二折环之间的振动部，所述第二折环与所述支架相连接，所述振动部与所述第一音圈相连接，所述第一折环与所述磁路系统相连接；
    在所述磁路系统的中心设置有贯通孔，其中，所述第一折环环绕所述贯通孔，所述第二振膜的声波经所述贯通孔向外辐射，且所述第一振膜和所述第二振膜的声波在所述发声单体的同一侧向外辐射。
  2. 根据权利要求1所述的发声单体，其特征在于，
    所述第一振膜和所述第二振膜同向振动，并向外辐射相同相位的声波。
  3. 根据权利要求1所述的发声单体，其特征在于，
    所述磁路系统包括磁轭、设置在所述磁轭上的中心磁路和边磁路；其中，
    所述磁轭包括中心轭板、位于所述中心轭板外侧的边轭板，所述中心轭板与所述边轭板不共面，且设有连接件连接所述中心轭板和所述边轭板，所述中心磁路设于中心轭板且与所述边轭板之间形成所述第二磁间隙，所述边磁路设于所述边轭板且与所述中心轭板之间形成所述第一磁间隙，所述贯通孔贯通所述中心轭板和所述中心磁路。
  4. 根据权利要求3所述的发声单体，其特征在于，
    所述中心磁路包括中心磁铁和中心导磁板，所述边磁路包括边磁铁和边导磁板，所述中心导磁板与所述边轭板之间形成所述第二磁间隙，所述边导磁板和所述中心轭板之间形成所述第一磁间隙；且/或，
    所述连接件为导磁轭板，或者，所述连接件为磁铁。
  5. 根据权利要求3所述的发声单体，其特征在于，
    所述中心轭板具有向靠近所述第一振膜的方向弯折延伸的延伸部，所述延伸部与所述第一折环相连接；或者，
    所述中心轭板为平板状，所述中心轭板靠近所述第一振膜的一侧设有支撑件，所述支撑件与所述第一折环相连接。
  6. 根据权利要求1所述的发声单体，其特征在于，
    所述第二振膜包括第三折环和补强部，所述第三折环环绕所述补强部设置，其中，
    所述补强部的外轮廓为圆形，所述外轮廓的直径为D1，所述贯通孔为圆形孔，所述贯通孔的直径为D2，D2≥0.3D1。
  7. 根据权利要求1所述的发声单体，其特征在于，
    所述第二振膜包括第三折环和补强部，所述第三折环环绕所述补强部设置，其中，
    所述贯通孔沿所述振动系统的振动方向向与所述振动方向相垂直的平面的投影具有第一投影面积S1，所述补强部沿所述振动系统的振动方向向与所述振动方向相垂直的平面的投影具有第二投影面积S2，S1≥8.5％*S2。
  8. 根据权利要求3所述的发声单体，其特征在于，
    所述连接件为环形，所述第一振膜、所述支架、所述边轭板、所述连接件和所述中心轭板之间形成第一腔体，所述第一腔体为密闭腔体，在所述发声单体上设有连通所述第一腔体与外部的第一泄露孔。
  9. 根据权利要求8所述的发声单体，其特征在于，
    所述中心磁路包括中心磁铁和中心导磁板，所述边磁路包括边磁铁和边导磁板，所述中心导磁板与所述边轭板之间形成所述第二磁间隙，所述边导磁板和所述中心轭板之间形成所述第一磁间隙，所述边导磁板注塑于所述支架上，所述第一泄露孔由所述边导磁板和对应的支架区域去料形成。
  10. 根据权利要求1所述的发声单体，其特征在于，
    还包括后盖，所述后盖位于所述第二振膜远离所述第一振膜的一侧，所述第二振膜和所述后盖之间形成第二腔体，在所述后盖上设置有连通所述第二腔体和外部的第二泄露孔。
  11. 一种电子设备，包括具有收容腔的壳体和设置在所述收容腔内的发声单体，其特征在于，所述发声单体采用如权利要求1-10中任一项所述的发声单体，所述发声单体包括所述第一振膜和所述第二振膜，其中，
    所述发声单体将所述收容腔分隔为相互隔离的前腔和后腔，在所述壳体上设置有与所述前腔相连通的出声孔，所述第一振膜和第二振膜的声波经所述出声孔向外界辐射。
PCT/CN2025/105266 2024-07-23 2025-06-30 发声单体及电子设备 Pending WO2026021176A1 (zh)

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