WO2022206045A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2022206045A1
WO2022206045A1 PCT/CN2021/139417 CN2021139417W WO2022206045A1 WO 2022206045 A1 WO2022206045 A1 WO 2022206045A1 CN 2021139417 W CN2021139417 W CN 2021139417W WO 2022206045 A1 WO2022206045 A1 WO 2022206045A1
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WO
WIPO (PCT)
Prior art keywords
central
magnetic
vibration
sound
magnetic circuit
Prior art date
Application number
PCT/CN2021/139417
Other languages
English (en)
French (fr)
Inventor
蔡晓东
李波波
刘松
Original Assignee
歌尔股份有限公司
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Filing date
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022206045A1 publication Critical patent/WO2022206045A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • 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.
  • a suspension bracket with side walls is usually used to support the central magnetic circuit assembly and the outer magnetic circuit assembly, and the sizes of the voice coils of the two vibration systems are different, and the two voice coils are respectively Located on the inner and outer sides of the side wall of the bracket.
  • this structure will cause the distance between the inner magnetic circuit and the outer magnetic circuit to be too large, and the space for the magnet to be placed is small, resulting in a small volume of the magnet.
  • the magnetic performance of the double-sided sound-emitting acoustic device is poor, the effective magnetic field strength that can be obtained by the two voice coils is small, and the sound loudness of the acoustic device is low.
  • the main purpose of the present invention is to provide a sounding device, which aims to achieve double-sided sounding and at the same time improve the sound loudness of the sounding device.
  • the sounding device proposed by the present invention includes: a casing
  • the magnetic circuit system includes a central magnetic circuit structure and a side magnetic circuit structure.
  • the central magnetic circuit structure includes a central magnet and two central magnetic conducting plates respectively arranged on the upper and lower sides of the central magnet.
  • Each of the central magnetic conducting plates The plate includes a first magnetic conductive portion corresponding to the central magnet, at least one of the central magnetic conductive plates includes a first connection portion extending from the edge of the first magnetic conductive portion to the outside, and the central magnets are provided on two Between the first magnetic conducting parts, the first connecting part is connected with the casing; the side magnetic circuit structure is fixed on the casing, and the side magnetic circuit structure includes a magnetic ring arranged around the central magnet.
  • Two vibrating systems each of which includes a vibrating membrane and a voice coil arranged on the vibrating membrane, the vibrating membrane is mounted on the housing, and the two vibrating membranes are separately arranged on the magnetic circuit On opposite sides of the system, the voice coil of each of the vibrating systems extends into the magnetic gap.
  • the voice coils of the two vibration systems are annular voice coils, and the central axes of the two annular voice coils are parallel to the vibration directions of the two vibration systems;
  • the two annular voice coils are distributed on the upper and lower sides of the first connecting portion.
  • each of the vibration systems includes two flat voice coils, and the central axes of the two flat voice coils are perpendicular to the vibration directions of the two vibration systems;
  • the magnetic gap includes two opposite first gaps and two opposite second gaps, and the two first gaps and the two second gaps are alternately distributed along the circumferential direction of the central magnet.
  • the first connecting part is arranged at the intersection of the first gap and the second gap;
  • the two flat voice coils of one of the vibration systems extend into the two first gaps, and the two flat voice coils of the other vibration system extend into the two second gaps.
  • both of the two central magnetic conducting plates include the first magnetic conducting portion and the first connecting portion, the first connecting portions of the two central magnetic conducting plates are disposed opposite to each other, and the two The first connecting parts of the central magnetic conducting plate are bent towards each other and are connected to each other.
  • the housing includes two connecting shells, the connecting shells are provided with openings at both ends, the open ends of the two connecting shells are connected, and the two central magnetic conducting plates are respectively provided in two places. inside the connecting shell, and the first connecting part of the central magnetic conducting plate is connected with the connecting shell.
  • the side magnetic conducting plate includes an annular connecting portion and a side magnetic conducting portion, the annular connecting portion is connected to the casing, the side magnetic conducting portion is connected to the inner side of the annular connecting portion, and the The sides of the side magnets facing the two diaphragms are provided with the side magnetic conducting parts.
  • the first connecting portion is connected to the annular connecting portion, and the central magnetic conducting plate and the side magnetic conducting plate are integrally formed.
  • the casing and the side magnetic conducting plate are integrally injection-molded.
  • the vibration system further includes a connecting bracket connecting the diaphragm and the flat voice coil.
  • the connecting bracket includes a first fixing part and two second fixing parts located at both ends of the first fixing part, the first fixing part is connected to the diaphragm, and the second fixing part faces toward the diaphragm.
  • the magnetic circuit system extends;
  • Each of the vibration systems includes two of the connecting brackets and two of the flat voice coils;
  • One end of one of the flat voice coils is connected to a second fixing portion of one of the connecting brackets, and the other end of the flat voice coil is connected to a second fixing portion of the other connecting bracket;
  • Two ends of the other flat voice coil are respectively connected to the other second fixing parts of the two connecting brackets.
  • the vibration system further includes a centering support piece, the centering support piece elastically connects the flat voice coil and the housing;
  • the vibration system includes two of the centering support pieces, the centering support pieces include a third connecting part and two supporting parts located at both ends of the third connecting part, the third connecting part and the The shell is connected, and the support part is connected with the flat voice coil.
  • the technical solution of the present invention is that a vibration system is respectively arranged on both sides of the magnetic circuit system, and the voice coils of the two vibration systems can both extend into the magnetic gap of the magnetic circuit system.
  • the two vibration systems can both vibrate and emit sound, so as to realize the double-sided sound of the sound-emitting device.
  • the central magnet is arranged on the first magnetic conductive portion of the central magnetic conductive plate, and the first connecting portion of the central magnetic conductive plate extends toward the outside of the central magnet to be connected to the housing, and then the The first connecting portion and the side magnets of the magnetic circuit system are distributed at intervals in the circumferential direction of the central magnet.
  • the fixation of the central magnet can be realized through the connection between the first connecting part and the casing, and the situation that the first connecting part occupies the gap between the central magnetic circuit structure and the side magnetic circuit structure can be avoided, so as to ensure the normal vibration of the voice coil.
  • the width of the magnetic gap between the central magnetic circuit structure and the side magnetic circuit structure can be made smaller, so that the placement space of the side magnet and the central magnet in the casing can be increased, so that the volume of the side magnet or the central magnet can be increased, and the sound can be improved.
  • the magnetic properties of the device make the effective magnetic field strength obtainable by the voice coils of the two vibration systems larger, enhance the sound loudness of the sound-generating device, and improve the acoustic performance of the sound-generating device.
  • FIG. 1 is an exploded view of an embodiment of a sound-emitting device of the present invention
  • Fig. 2 is the cutaway schematic diagram of the sounding device in Fig. 1 after being assembled;
  • Fig. 3 is the structural representation of the magnetic circuit system in Fig. 1;
  • FIG. 4 is a schematic structural diagram of the magnetic circuit system in FIG. 3 after assembly
  • FIG. 5 is a schematic cross-sectional view of the magnetic circuit system in the X-X direction in FIG. 4;
  • FIG. 6 is an exploded view of the magnetic circuit system in another embodiment of the sounding device of the present invention.
  • Fig. 7 is the structural representation of the magnetic conducting plate of the magnetic circuit system in Fig. 6;
  • Figure 8 is an exploded view of the housing in Figure 1;
  • Fig. 9 is the structural representation of flat voice coil, centering support piece and connecting bracket in Fig. 1;
  • Fig. 10 is the structural representation of the connecting bracket in Fig. 9;
  • FIG. 11 is a schematic structural diagram of a flat voice coil, a centering support piece and a connecting bracket in another embodiment of the sounding device of the present invention.
  • FIG. 12 is a partial structural schematic diagram of a magnetic circuit system in still another embodiment of the sound-emitting device of the present invention.
  • label name label name 10 case 30
  • Vibration system 11 connection shell 31
  • Magnetic circuit system 33 connecting bracket twenty one Magnetic gap 331 first fixed part 211 first gap 332 second fixing part 212 second gap 333 first connection board twenty two center magnet 334 second connection board twenty three side magnet 34 centering piece twenty four Center magnetic plate 341 second connecting part 241
  • the first magnetic conductive part 342 support 243 first connection part 343 support section 25 side magnetic plate 344 elastic segment 251 Ring connection 345 Fixed segment 252 side magnetism
  • the directional indications are only used to explain the relationship between various components in a specific posture If the specific posture changes, the directional indication also changes accordingly.
  • the present invention provides a sounding device for use in electronic equipment, and the electronic equipment can be a mobile phone, a tablet computer, a computer, or a wearable device such as a watch.
  • the sound generating device includes a housing 10, a magnetic circuit system 20 and two vibration systems 30.
  • the magnetic circuit system 20 includes a central magnetic circuit structure and a side magnetic circuit structure,
  • the central magnetic circuit structure includes a central magnet 22 and two central magnetic conducting plates 24 respectively disposed on the upper and lower sides of the central magnet 22.
  • Each central magnetic conducting plate 24 includes a first magnetic conducting portion 241 corresponding to the central magnet 22.
  • At least one The central magnetic conducting plate 24 includes a first connecting portion 243 extending from the edge of the first magnetic conducting portion 241 to the outside.
  • the central magnet 22 is arranged between the two first magnetic conducting portions 241 . 10 connections.
  • the side magnetic circuit structure is fixed on the casing 10, and the side magnetic circuit structure includes a plurality of side magnets 23 arranged around the central magnet 22 and side magnetic conducting plates 25 arranged on the upper and lower sides of the side magnet 23.
  • the side magnets 23 and the first connecting portion 243 are distributed at intervals in the circumferential direction of the central magnet 22 ; a magnetic gap 21 is formed between the central magnet 22 and the central magnetic conductive plate 24 and the side magnets 23 and the side magnetic conductive plate 25 .
  • Each vibrating system 30 includes a vibrating membrane 31 and a voice coil disposed on the vibrating membrane 31 .
  • the vibrating membrane 31 is mounted on the housing 10 , and the two vibrating membranes 31 are respectively disposed on two opposite sides of the magnetic circuit system 20 .
  • Each vibrating system The voice coil of 30 extends into the magnetic gap 21 .
  • the casing 10 is provided with openings at both ends, wherein the diaphragm 31 of one vibration system 30 is installed at the opening of one end of the casing 10 , and the diaphragm 31 of the other vibration system 30 is installed at the other end of the casing 10 . opening.
  • the voice coils of the two vibrating systems 30 are disposed on the surfaces of the two vibrating membranes 31 facing each other, and the arrangement direction of the two vibrating membranes 31 is the vibration direction of the two vibrating membranes 31 .
  • the two vibration systems 30 may vibrate individually or simultaneously, that is, electrical signals may be input to the voice coils of the two vibration systems 30 respectively.
  • the technical solution of the present invention is that a vibration system 30 is respectively arranged on both sides of the magnetic circuit system 20, and the voice coils of the two vibration systems 30 can both extend into the magnetic gap 21 of the magnetic circuit system 20, and the two vibration systems 30 are connected to the magnetic gap 21. After the voice coil is energized, the two vibration systems 30 can both vibrate and emit sound, so that the sound device can emit sound from both sides.
  • the central magnet 22 by disposing the central magnet 22 on the first magnetic conducting portion 241 of the central magnetic conducting plate 24 , and extending the first connecting portion 243 of the central magnetic conducting plate 24 toward the outside of the central magnet 22 , After connecting with the housing 10 , the first connecting portion 243 and the side magnets 23 of the magnetic circuit system 20 are distributed at intervals in the circumferential direction of the central magnet 22 . In this way, the fixing of the central magnet 22 can be realized through the connection between the first connecting portion 243 and the housing 10, and the situation that the first connecting portion 243 occupies the gap between the central magnetic circuit structure and the side magnetic circuit structure can be avoided, so as to ensure the sound quality.
  • the width of the magnetic gap 21 between the center magnetic circuit structure and the side magnetic circuit structure can be made smaller, so that the placement space of the side magnets 23 and the center magnet 22 in the housing 10 can be increased, so as to increase the
  • the volume of the side magnets 23 or the central magnet 22 improves the magnetic performance of the sounding device, so that the effective magnetic field strengths obtained by the voice coils of the two vibration systems 30 are larger, and the sound loudness of the sounding device can be enhanced, which can improve the acoustic performance of the sounding device.
  • the voice coils of the two vibration systems 30 are annular voice coils (not shown in the figure), the central axes of the two annular voice coils are parallel to the vibration directions of the two vibration systems 30, and the two annular voice coils are distributed on the upper and lower sides of the first connecting portion 243 .
  • the annular voice coil is adopted in this way, the structure is simple, and each annular voice coil can extend into the magnetic gap around the first magnetic conducting portion 241, so as to ensure that the effective magnetic field strengths obtained by the voice coils of the two vibration systems 30 are relatively large, Enhances the sound loudness of the sound-generating device.
  • the voice coils of the two vibration systems 30 are both flat voice coils 32
  • the central axis of the flat voice coil 32 is perpendicular to the vibration direction of the vibration system 30
  • the flat voice coil 32 and the first connecting portion 243 are located at the center of the magnet 22 . circumferentially spaced distribution.
  • the flat voice coil 32 has two wire segments spaced along the arrangement direction (vibration direction) of the two diaphragms 31 , and the two wire segments of the flat voice coil 32 are both located in the magnetic gap 21 , that is, the flat voice coil 32 has two wire segments.
  • One of the wire segments of the coil 32 is at least partially located in the magnetic gap 21 formed by the center magnetic conductive plate 24 and the side magnetic conductive plates 25 on one side of the center magnet 22
  • the other wire segment of the flat voice coil 32 is at least partially located in the center magnet 22 In the magnetic gap 21 formed by the center magnetic conductive plate 24 and the side magnetic conductive plate 25 on the other side.
  • the first connecting portion 243 occupies the space of the magnetic gap 21 in the depth direction (ie, the vibration direction), that is, the first connecting portion 243 is avoided.
  • the connecting portion 243 and the flat voice coil 32 share a space in the depth direction of the magnetic gap 21 , the space in the depth direction of the magnetic gap 21 can be fully utilized, and the space utilization rate can be improved. Therefore, the vibration space of the flat voice coil 32 in the magnetic gap 21 can be increased, and the vibration effect of the vibration system 30 can be improved.
  • the two wire segments of the flat voice coil 32 can be in the effective magnetic field, ensure that the effective magnetic field strengths available for the voice coils of the two vibration systems 30 are large, and enhance the sound loudness of the sound generating device.
  • the wire segment of the flat voice coil 32 of the vibration system 30 away from its vibrating membrane 31 can also be extended into the magnetic gap 21, and the wire segment of the flat voice coil 32 of the vibration system 30 close to its vibrating membrane 31 is located in the magnetic gap 21. Outside the magnetic gap 21.
  • the flat voice coils 32 of the two vibration systems 30 are distributed at intervals in the circumferential direction of the magnetic circuit system 20 . That is, the orthographic projections of the flat voice coils 32 of the two vibration systems 30 on any one of the vibration membranes 31 are spaced along the circumferential direction of the vibration membrane 31 , thus avoiding the depth of the flat voice coils 32 of the two vibration systems 30 in the magnetic gap 21 In the case where the directions share the space, each flat voice coil 32 can make full use of the space in the depth direction of the magnetic gap 21 , which can improve the vibration effect of the vibration system 30 .
  • the flat voice coils 32 of the two vibration systems 30 may also be disposed opposite to each other, that is, the flat voice coils 32 of the two vibration systems 30 share a space in the depth direction of the magnetic gap 21 .
  • each vibration system 30 includes two flat voice coils 32 , and the central axes of the two flat voice coils 32 are perpendicular to the vibration directions of the two vibration systems 30 . That is to say, the two flat voice coils 32 of the same vibration system 30 are respectively arranged on two opposite sides of the central magnet 22, and the two flat voice coils 32 of the vibration system 30 are both arranged on the vibration film 31 and can extend into the magnetic gap 21, In this way, the vibrating membrane 31 can be uniformly stressed when vibrating, the possibility of polarization of the vibration system 30 is reduced, and the sound production performance of the vibration system 30 is improved.
  • the vibration system 30 may also include only one flat voice coil 32 , or the vibration system 30 may include three, four or more flat voice coils 32 .
  • the magnetic gap 21 includes two opposite first gaps 211 and two opposite second gaps 212 , and the two first gaps 211 and the two second gaps 212 are alternately distributed in sequence along the circumferential direction of the central magnet 22 .
  • the first connecting portion 243 is provided at the junction of the first gap 211 and the second gap 212, wherein the two flat voice coils 32 of one vibration system 30 extend into the two first gaps 211, and the two flat voice coils 32 of the other vibration system 30
  • the flat voice coil 32 extends into the two second gaps 212 . That is, the two flat voice coils 32 of one vibration system 30 each protrude into a first gap 211 , and the two flat voice coils 32 of the other vibration system 30 each protrude into a second gap 212 .
  • the sound-generating device may be in a direction or a circle, that is, the central magnet 22 may be in a square or circular shape, or the central magnet 22 may be in a tri-deformation, a pentagon, a hexagon, or an octagon, and so on.
  • the central magnet 22 is substantially square, the first connecting portion 243 is equivalent to the magnetic gap 21 at the corner of the central magnet 22 , so that the space in the circumferential direction of the central magnet 22 can be fully utilized.
  • the first connecting portion 243 can also be set in the first gap 211 or the second gap 212, and in order to avoid the flat voice coil 32 of one of the vibration systems 30, the first connecting portion 243 can The direction of the other vibration system 30 is bent to provide a space for avoiding the flat voice coil 32 of the vibration system 30 .
  • the two central magnetic conductive plates 24 both include a first magnetic conductive portion 241 and a first connection portion 243 , and the two central magnetic conductive plates
  • the first connecting parts 243 of the 24 are disposed opposite to each other, and the first connecting parts 243 of the two central magnetic conducting plates 24 are bent towards each other and are connected to each other. That is, each central magnetic conducting plate 24 includes a first magnetic conducting portion 241 and a first connecting portion 243, the central magnet 22 is disposed between the two first magnetic conducting portions 241, and each first connecting portion 243 is disposed on the first connecting portion 243.
  • the first connecting portion 243 of each central magnetic conductive plate 24 is bent in the direction of the other central magnetic conductive plate 24 to be connected with the other central magnetic conductive plate 24 .
  • the first connecting portion 243 is connected, so that the stability of the central magnet 22 between the two central magnetic conducting plates 24 can be increased.
  • the first connecting portion 243 may also be straight, that is, the first connecting portion 243 is not bent, or the first connecting portion 243 of the two central magnetic conducting plates 24 is connected through a connecting structure.
  • a connecting piece is provided on the first connecting portion 243 of the two central magnetic conducting plates 24 .
  • the central magnetic conducting plate 24 at least includes two first connecting portions 243 respectively disposed on two opposite sides of the first magnetic conducting portion 241 . That is, the central magnetic conductive plate 24 can be connected to the housing 10 through the first connecting portions 243 on the opposite sides of the first magnetic conductive portion 241, which not only increases the connection area between the central magnetic conductive plate 24 and the housing 10, but also makes the first The two opposite sides of the magnetic conductive portion 241 are uniformly stressed, so that the stability of the central magnetic conductive plate 24 can be improved, and the magnetic circuit system 20 can be kept stable during the vibration process.
  • the number of the first connection parts 243 may also be three, four or more, and so on. Of course, in other embodiments, the first connecting portion 243 may only be on one side of the first magnetic conducting portion 241 .
  • the side magnetic conducting plate 25 includes an annular connecting portion 251 and a side magnetic conducting portion 252, the annular connecting portion 251 is connected to the housing 10, the side magnetic conducting portion 252 is connected to the inner side of the annular connecting portion 251,
  • the surfaces of the magnet 23 facing the two diaphragms 31 are provided with side magnetic conducting portions 252 .
  • the magnetic circuit system 20 includes two side magnetic conducting plates 25 , one of which is disposed on the side of the side magnet 23 facing one of the diaphragms 31 , and the other side magnetic conducting plate 25 is disposed on the side magnet 23 .
  • 23 faces the side of the other vibrating film 31
  • each side magnetic conducting plate 25 includes an annular connecting portion 251 and a side magnetic conducting portion 252 .
  • a plurality of side magnetic permeable parts 252 can be provided on the inner side of the annular connecting part 251 , and the number of the side magnetic permeable parts 252 can be set according to the number of the side magnets 23 .
  • the annular connecting portion 251 and the side magnetic conducting portion 252 are integrally formed. Compared with the way of arranging a plurality of independent side magnetizing plates 25, the side magnetic conducting portion 252 and the annular connecting portion 251 can be connected as a whole, which can reduce the number of sound generating devices. The number of parts is reduced, which is beneficial to reduce the assembly process and improve the production efficiency. Moreover, by connecting the outer periphery of the annular connecting portion 251 to the casing 10 , the connection stability of the side magnetic conducting plate 25 can be improved.
  • the side magnetic conductive portion 252 may also be annular, so as to be disposed on the surfaces of the plurality of side magnets 23 facing the diaphragm 31 .
  • the first connecting portion 243 is connected to the annular connecting portion 251 , and the center magnetic conductive plate and the side magnetic conductive plate are integrally formed.
  • the center magnetic conductive plate 24 and the side magnetic conductive plate 25 can be easily manufactured and formed, and the connection process of the central magnetic conductive plate 24 and the side magnetic conductive plate 25 can be reduced.
  • the first connecting portion 243 and the annular connecting portion 251 may also be welded together.
  • the center magnetic conductive plate 24 and the side magnetic conductive plate 25 may be provided separately (refer to FIG. 6 and FIG. 7 ).
  • the housing 10 and the side magnetic conducting plate 25 are integrally injection-molded. That is, the side magnetic conducting plate 25 (the annular connecting portion 251 ) is integrally injection-molded with the casing 10 as an insert, so that the structural strength of the casing 10 can be improved through the side magnetic conducting plate 25 , and the casing 10 and the side magnetic conducting plate 25 can be improved.
  • the connection stability is improved, and the number of parts and components in the assembly process of the sounding device can be reduced, and the assembly process can be reduced.
  • the casing 10 and the central magnetic conducting plate 24 may also be integrally formed by stamping or the like.
  • the casing 10 and the central magnetic conducting plate 24 can also be fixed together by means of bonding or screws.
  • the housing 10 includes two connecting shells 11 , the connecting shells 11 are provided with openings at both ends, the open ends of the two connecting shells 11 are connected, and the two central magnetic conducting plates 24 are respectively disposed on the two connecting shells 11 inside, and the first connecting portion 243 of the central magnetic conducting plate 24 is connected to the connecting shell 11 . That is, the two connection shells 11 are arranged as separate bodies, one of the central magnetic conducting plates 24 is connected to one of the connecting shells 11 , and the other central magnetic conducting plate 24 is connected to the other connecting shell 11 .
  • the two central magnetic conducting plates 24 can be installed on the two connecting shells 11 respectively, and then the open ends of the two connecting shells 11 can be connected, which can facilitate the assembly of the housing 10 and the magnetic circuit system 20 .
  • the housing 10 may also be an integral structure.
  • the first connecting portions 243 of the two central magnetic conducting plates 24 may also be sandwiched between the two connecting shells 11 .
  • the first connecting portion 243 of the central magnetic conducting plate 24 is sandwiched between the two connecting shells 11 .
  • the vibration system 30 further includes a connection bracket 33 , and the connection bracket 33 connects the diaphragm 31 and the flat voice coil 32 .
  • the diaphragm 31 includes a center portion, a ring portion surrounding the outer edge of the center portion, and an edge portion surrounding the outer edge of the ring portion, wherein both the ring portion and the edge portion are annular.
  • the connecting bracket 33 is connected to the side of the diaphragm 31 facing the center magnet 22 , that is, the connecting bracket 33 is connected to the side of the center portion facing the center magnet 22 , and the flat voice coil 32 is connected to the side of the connecting bracket 33 away from the diaphragm 31 , so
  • the fixed connection of the flat voice coil 42 can be facilitated, and the stability of the flat voice coil 42 can be improved.
  • the size of the flat voice coil 32 can also be increased to ensure that the wire segment of the flat voice coil 32 can extend into the magnetic gap 21 .
  • each vibration system 30 includes two connecting brackets 33 and two flat voice coils 32.
  • the connecting brackets 33 include a first fixing portion 331 and a The two second fixing portions 332 at both ends of the fixing portion 331 , the first fixing portion 331 is connected to the diaphragm 31 , and the second fixing portion 332 extends toward the magnetic circuit system 20 .
  • One end of one of the flat voice coils 32 is connected to a second fixing portion 332 of one of the connecting brackets 33 , the other end of the flat voice coil 32 is connected to a second fixing portion 332 of the other connecting bracket 33 , and the other end of the flat voice coil 32 The two ends are respectively connected to the other second fixing parts 332 of the two connecting brackets 33 .
  • the two flat voice coils 32 of the same vibration system 30 are disposed opposite to each other, that is, the flat voice coils 32 of the two vibration systems 30 are alternately distributed in the circumferential direction of the central magnet 22 .
  • the two connecting brackets 33 are disposed opposite to each other, and the two flat voice coils 32 and the two connecting brackets 33 are alternately distributed along the circumferential direction of the diaphragm 31 .
  • Two ends of one of the flat voice coils 32 are respectively connected to one of the second fixing portions 332 of the two connecting brackets 33 , and two ends of the other flat voice coil 32 are respectively connected to the other second fixing portion 332 of the two connecting brackets 33 ,
  • the two connecting brackets 33 and the two flat voice coils 32 are connected in a frame shape.
  • This arrangement is equivalent to connecting the two connecting brackets 33 and the two flat voice coils 32 as a whole, which not only increases the connection stability of the connecting bracket 33 and the flat voice coil 32 , but also increases the distance between the two flat voice coils 32 .
  • the stability can reduce the possibility of polarization of the flat voice coil 32 when the vibration system 30 vibrates.
  • only one connecting bracket 33 may be connected to only one flat voice coil 32 , or only one connecting bracket 33 may be provided, and two flat voice coils 32 may be connected to the connecting bracket 33 .
  • the vibration system 30 further includes a centering support piece 34 , and the centering support piece 34 elastically connects the flat voice coil 32 and the housing 10 .
  • the centering piece 34 By arranging the centering piece 34 to connect the flat voice coil 32 and the housing 10, the offset movement of the flat voice coil 32 in the direction perpendicular to the vibration direction can be reduced, thereby effectively reducing the polarization phenomenon of the voice coil and improving the listening sound of the sound generating device Yield.
  • the vibration system 30 includes two centering support pieces 34 , the centering support piece 34 includes a second connecting portion 341 and two supporting portions 342 respectively disposed at both ends of the second connecting portion 341 , and the second connecting portion 341 is connected to the second connecting portion 341 .
  • the housing 10 is connected, and the support portion 342 is connected to the flat voice coil 32 .
  • the two supporting portions 342 of the centering support piece 34 are respectively disposed at both ends of the side-flat voice coil in the length direction
  • the supporting portion 342 includes an elastic section 344 and a supporting section 343, and one end of the elastic section 344 is connected to the second connecting section 341
  • One end of the support section 343 is connected to the other end of the elastic section 344, and the support section 343 is connected to the part of the connecting bracket 33 that is connected to the flat voice coil 32 (the second fixing part 332).
  • the support section 343 may also be directly connected with the flat voice coil 32, or the support section 343 may be connected with the flat voice coil 32 and the connecting bracket 33 (the second fixing portion 332) at the same time.
  • the second connecting portion 341 is installed between the two connecting shells 11 so as to fix the centering support piece 34 .
  • the centering support piece 34 includes a fixed segment 345, an elastic segment 344 and a The two ends of the support section 343 and the elastic section 344 are respectively connected to the fixed section 345 and the support section 343 .
  • the support section 343 can be directly connected to the flat voice coil 32, or can be connected to the part of the connecting bracket 33 that is connected to the flat voice coil 32 (the second fixing portion 332), or the support section 343 can be connected to the flat voice coil 32 and the connecting bracket at the same time. 33 (second fixing part 332).
  • the fixing section 345 is installed at the notch of the connecting shell 11 for forming the pressure relief hole 12 , which can not only provide space for the installation of the centering support piece 34 , but also facilitate the forming of the pressure relief hole 12 , so as to realize the release of the pressure relief hole 12 . pressure function.
  • the second fixing portion 332 includes a first connecting plate 333 and a second connecting plate 334 .
  • the first connecting plate 333 is connected to the first fixing portion 331 and faces away from the diaphragm 31 .
  • the second connecting plate 334 connects the side of the first connecting plate 333 away from the first fixing portion 331 , and faces the direction away from the other second fixing portion 332 Extending, that is, the second connecting plates 334 of the two second fixing parts 332 extend in a direction away from each other, the flat voice coil 32 is mounted on the surface of the first connecting plate 333 facing the other first connecting plate 333, the centering support piece 34 The (supporting segment 343 ) is connected to the surface of the second connecting plate 334 facing away from the first fixing portion 331 .
  • the second fixing portion 332 can fix both the flat voice coil 32 and the centering support piece 34, and can avoid the interference between the flat voice coil 32 and the centering support piece 34 (supporting segment 343), and can also The flat voice coil 32 is in contact with the centering support piece 34 (supporting segment 343 ), which increases the optionality of assembly and facilitates the assembly of the sounding device.
  • the first connecting portion 243 of the central magnetic conductive plate 24 can also be disposed corresponding to the first gap 211 , the central magnetic conductive plate 24 can be provided with an avoidance gap corresponding to the second gap 212 , and the flat voice coil 32 extends into the magnetic gap from the avoidance gap, so that the structure of the central magnetic conducting plate 24 is simple.
  • the number of the central magnetic conductive plates 24 may be one or two.
  • the number of the central magnetic conductive plates 24 is one, if the first connection portion 243 of the central magnetic conductive plate 24 is set corresponding to the first gap 211, the The magnetic conductive plate 24 is provided with an avoidance gap corresponding to the second gap 212, and the side of the central magnet away from the central magnetic conductive plate 24 may not be provided with the central magnetic conductive plate 24, and the flat voice coil 32 of the vibration system on this side can extend into the first. A gap 211 or a second gap 212 .
  • the number of the central magnetic conductive plates 24 is two, the two central magnetic conductive plates 24 are respectively disposed on two opposite sides of the central magnet 22 , that is, the central magnet 22 is disposed between the first magnetic conductive portions 241 of the two central magnetic conductive plates 24 .
  • the first connecting portion 243 of one of the central magnetic conducting plates 24 is provided corresponding to the first gap 211 , and is provided with an avoidance gap corresponding to the second gap 212 .
  • the first connecting portion 243 of the other central magnetic conducting plate 24 is provided corresponding to the second gap 212 , and is provided with an avoidance gap corresponding to the first gap 211 .
  • the present invention also provides an electronic device, the electronic device includes a casing and a sounding device.
  • the specific structure of the sounding device refers to the above-mentioned embodiments. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it has at least the above-mentioned embodiments. All the beneficial effects brought by the technical solution will not be repeated here.
  • the sound generating device is arranged in the casing.
  • the electronic device may be a mobile phone, a tablet computer, a computer, or a wearable device such as a watch.
  • the housing has an installation cavity
  • the sound generating device is installed in the installation cavity
  • the installation cavity is divided into a first sound cavity and a second sound cavity, wherein the diaphragm of one vibration system is communicated with the first sound cavity, and the vibration film of the other vibration system is in communication with the first sound cavity.
  • the membrane is communicated with the second acoustic cavity
  • the casing is provided with two sound exit holes, one of which is communicated with the first acoustic cavity, and the other sound exit hole is communicated with the second acoustic cavity.
  • the sound waves from the two sound holes can be sound waves with opposite phases, so that the sound waves from the two sound holes form sound dipoles, thereby The risk of sound leakage can be reduced.
  • the volume can be increased.
  • only one sound outlet hole may be provided, and the sound outlet hole communicates with the first sound cavity and the second sound cavity.

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Abstract

本发明公开一种发声装置，该发声装置包括壳体、磁路***和两个振动***，磁路***包括中心磁路结构和边磁路结构，中心磁路结构包括中心磁体和两个中心导磁板，每个中心导磁板包括与中心磁体对应的第一导磁部，至少一个中心导磁板包括由第一导磁部的边缘向外侧延伸设置的第一连接部，第一连接部与壳体连接；边磁路结构包括多个边磁体以及边导磁板，边磁体与第一连接部在中心磁体的周向间隔分布；中心磁体和中心导磁板与边磁体和边导磁板之间形成磁间隙。每一个振动***均包括振膜和音圈，振膜安装于壳体，且两个振膜分设于磁路***的两相对侧，每一振动***的音圈伸入磁间隙。本发明技术方案能够实现双面发声的同时，提升发声装置声音响度。

Description

发声装置 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
目前的双面发声声学器件中，通常采用带有侧壁的悬吊式支架来支撑中心磁路组件和外磁路组件，并使两个振动***的音圈的尺寸不同，两个音圈分别位于该支架的侧壁的内外两侧。然而该结构会造成内磁路与外磁路之间的间距过大，供磁铁放置的空间较小，造成磁铁体积小。进而造成双面发声声学器件的磁性能较差，两个音圈可获得的有效磁场强度小，声学器件的声音响度低。
发明内容
本发明的主要目的是提出一种发声装置，旨在实现双面发声的同时，提升发声装置声音响度。
为实现上述目的，本发明提出的发声装置，包括：壳体；
磁路***，包括中心磁路结构和边磁路结构，所述中心磁路结构包括中心磁体、分别设于所述中心磁体上下两侧的两个中心导磁板，每个所述中心导磁板包括与所述中心磁体对应的第一导磁部，至少一个所述中心导磁板包括由第一导磁部的边缘向外侧延伸设置的第一连接部，所述中心磁体设于两个所述第一导磁部之间，所述第一连接部与所述壳体连接；所述边磁路结构固定于所述壳体，所述边磁路结构包括环绕所述中心磁体设置的多个边磁体以及设于所述边磁体上下两侧的边导磁板，所述边磁体与所述第一连接部在所述中心磁体的周向间隔分布；所述中心磁体和所述中心导磁板与所述边磁体和边导磁板之间形成磁间隙；
两个振动***，每一个所述振动***均包括振膜和设于所述振膜的音圈，所述振膜安装于所述壳体，且两个所述振膜分设于所述磁路***的两相对侧， 每一所述振动***的音圈伸入所述磁间隙。
可选地，所述两个振动***的音圈均为环形音圈，所述两个环形音圈的中心轴线与所述两个振动***的振动方向平行；
所述两个环形音圈分布于所述第一连接部的上下两侧。
可选地，每个所述振动***包括两个扁平音圈，所述两个扁平音圈的中心轴线与所述两个振动***的振动方向垂直；
所述磁间隙包括相对的两个第一间隙和相对的两个第二间隙，两个所述第一间隙和两个所述第二间隙沿所述中心磁体的周向依次交替分布，所述第一连接部设于所述第一间隙和所述第二间隙的交接处；
其中一个所述振动***的两个扁平音圈伸入所述两个第一间隙，另一个所述振动***的两个扁平音圈伸入所述两个第二间隙。
可选地，两个所述中心导磁板均包括所述第一导磁部和所述第一连接部，两个所述中心导磁板的第一连接部相对设置，且两个所述中心导磁板的第一连接部呈相互朝向弯折的弯折状，并相互连接。
可选地，所述壳体包括两个连接壳，所述连接壳呈两端开口设置，两个所述连接壳的开口端相连接，两个所述中心导磁板分别设于两个所述连接壳内，且所述中心导磁板的第一连接部与所述连接壳连接。
可选地，所述边导磁板包括环形连接部和边导磁部，所述环形连接部与所述壳体连接，所述边导磁部连接于所述环形连接部的内侧，所述边磁体朝向两个所述振膜的表面均设有所述边导磁部。
可选地，所述第一连接部与所述环形连接部连接，所述中心导磁板与所述边导磁板为一体成型结构。
可选地，所述壳体与所述边导磁板一体注塑成型。
可选地，所述振动***还包括连接支架，所述连接支架连接所述振膜和所述扁平音圈。
可选地，所述连接支架包括第一固定部和分设于所述第一固定部两端的两个第二固定部，所述第一固定部连接所述振膜，所述第二固定部朝所述磁路***延伸；
每个所述振动***均包括两个所述连接支架和两个所述扁平音圈；
其中一个所述扁平音圈的一端连接其中一个所述连接支架的一个第二固 定部，所述扁平音圈的另一端连接另一个所述连接支架的一个第二固定部；
另一个所述扁平音圈的两端分别连接两个所述连接支架的另一个第二固定部。
可选地，所述振动***还包括定心支片，所述定心支片弹性连接所述扁平音圈和所述壳体；
所述振动***包括两个所述定心支片，所述定心支片包括第三连接部和分设于所述第三连接部两端的两个支撑部，所述第三连接部与所述壳体连接，所述支撑部与所述扁平音圈连接。
本发明技术方案通过在磁路***的两侧分别设置一个振动***，且两个振动***的音圈均能伸入磁路***的磁间隙中，向两个振动***的音圈通电后，可使得两个振动***均能振动发声，从而实现发声装置双面发声。同时，在磁路***中，通过将中心磁体设于中心导磁板的第一导磁部，并使得中心导磁板的第一连接部朝中心磁体的外侧延伸而与壳体连接，再将第一连接部与磁路***的边磁体在中心磁体的周向间隔分布。如此既能通过第一连接部与壳体的连接而实现中心磁体的固定，也能避免第一连接部占用中心磁路结构和边磁路结构之间间隙情况，从而在保证音圈正常振动的情况下，可以使得中心磁路结构和边磁路结构之间的磁间隙宽度较小，从而可以增大壳体内边磁体和中心磁体的放置空间，以能增加边磁体或中心磁体体积，提升发声装置的磁性能，使得两个振动***的音圈可获得的有效磁场强度较大，增强发声装置的声音响度，能提升发声装置的声学性能。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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发明的一些实施例，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示出的结构获得其他的附图。
图1为本发明发声装置一实施例的***图；
图2为图1中发声装置装配后的剖切示意图；
图3为图1中磁路***的结构示意图；
图4为图3中磁路***组装后的结构示意图；
图5为图4中磁路***X-X向的剖切示意图；
图6为本发明发声装置另一实施例中磁路***的***图；
图7为图6中磁路***的导磁板的结构示意图；
图8为图1中壳体的***图；
图9为图1中扁平音圈、定心支片和连接支架的结构示意图；
图10为图9中连接支架的结构示意图；
图11为本发明发声装置另一实施例中扁平音圈、定心支片和连接支架的结构示意图；
图12为本发明发声装置再一实施例中磁路***的部分结构示意图。
附图标号说明：
标号 名称 标号 名称
10 壳体 30 振动***
11 连接壳 31 振膜
12 泄压孔 32 扁平音圈
20 磁路*** 33 连接支架
21 磁间隙 331 第一固定部
211 第一间隙 332 第二固定部
212 第二间隙 333 第一连接板
22 中心磁体 334 第二连接板
23 边磁体 34 定心支片
24 中心导磁板 341 第二连接部
241 第一导磁部 342 支撑部
243 第一连接部 343 支撑段
25 边导磁板 344 弹性段
251 环形连接部 345 固定段
252 边导磁部    
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步 说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动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。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，全文中出现的“和/或”的含义为，包括三个并列的方案，以“A和/或B为例”，包括A方案，或B方案，或A和B同时满足的方案。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种发声装置，用于电子设备，电子设备可以为手机、平板电脑、电脑或如手表等可穿戴设备。
在本发明实施例中，请结合参考图1至图3，该发声装置包括壳体10、磁路***20和两个振动***30，磁路***20包括中心磁路结构和边磁路结构，中心磁路结构包括中心磁体22、分别设于中心磁体22上下两侧的两个中心导磁板24，每个中心导磁板24包括与中心磁体22对应的第一导磁部241，至少一个中心导磁板24包括由第一导磁部241的边缘向外侧延伸设置的第一连接部243，中心磁体22设于两个第一导磁部241之间，第一连接部243与壳体10连接。边磁路结构固定于壳体10，边磁路结构包括环绕中心磁体22设置的多个边磁体23以及设于边磁体23上下两侧的边导磁板25，边磁体23 与第一连接部243在中心磁体22的周向间隔分布；中心磁体22和中心导磁板24与边磁体23和边导磁板25之间形成磁间隙21。
每一个振动***30均包括振膜31和设于振膜31的音圈，振膜31安装于壳体10，且两个振膜31分设于磁路***20的两相对侧，每一振动***30的音圈伸入磁间隙21。
本实施例中，壳体10呈两端开口设置，其中一个振动***30的振膜31安装于壳体10的一端开口处，另一个振动***30的振膜31安装于壳体10的另一端开口处。两个振动***30的音圈设于两个振膜31的相互朝向的表面，两个振膜31的排布方向即为两个振膜31的振动方向。其中，两个振动***30可以各自单独振动，也可以同时振动，即可以向两个振动***30的音圈分别输入电信号。
本发明技术方案通过在磁路***20的两侧分别设置一个振动***30，且两个振动***30的音圈均能伸入磁路***20的磁间隙21中，向两个振动***30的音圈通电后，可使得两个振动***30均能振动发声，从而实现发声装置双面发声。同时，在磁路***20中，通过将中心磁体22设于中心导磁板24的第一导磁部241，并使得中心导磁板24的第一连接部243朝中心磁体22的外侧延伸而与壳体10连接，再将第一连接部243与磁路***20的边磁体23在中心磁体22的周向间隔分布。如此既能通过第一连接部243与壳体10的连接而实现中心磁体22的固定，也能避免第一连接部243占用中心磁路结构和边磁路结构之间间隙情况，从而在保证音圈正常振动的情况下，可以使得中心磁路结构和边磁路结构之间的磁间隙21宽度较小，从而可以增大壳体10内边磁体23和中心磁体22的放置空间，以能增加边磁体23或中心磁体22体积，提升发声装置的磁性能，使得两个振动***30的音圈可获得的有效磁场强度较大，增强发声装置的声音响度，能提升发声装置的声学性能。
一实施例中，两个振动***30的音圈均为环形音圈(图未示出)，两个环形音圈的中心轴线与两个振动***30的振动方向平行，两个环形音圈分布于第一连接部243的上下两侧。如此采用环形音圈时，结构简单，且每一个环形音圈均能够伸入第一导磁部241四周的磁间隙中，保证两个振动***30的音圈可获得的有效磁场强度较大，增强发声装置的声音响度。
一实施例中，两个振动***30的音圈均为扁平音圈32，扁平音圈32的 中心轴线与振动***30的振动方向垂直，扁平音圈32与第一连接部243在中心磁体22的周向间隔分布。具体而言，扁平音圈32具有沿两个振膜31的排布方向(振动方向)间隔分布的两个导线段，扁平音圈32的两个导线段均位于磁间隙21中，即扁平音圈32的其中一个导线段至少部分位于中心磁体22其中一侧的中心导磁板24与边导磁板25形成的磁间隙21中，扁平音圈32的另一个导线段至少部分位于中心磁体22另一侧的中心导磁板24与边导磁板25形成的磁间隙21中。
如此避免了两个振动***30的扁平音圈32之间存在第一连接部243时，第一连接部243占用磁间隙21在深度方向(即振动方向)的空间的情况，即避免了第一连接部243和扁平音圈32在磁间隙21的深度方向共用空间的情况，还能充分利用磁间隙21深度方向的空间，提升空间利用率。从而可以增大扁平音圈32在磁间隙21中的振动空间，提升振动***30的振动效果。而且能保证扁平音圈32的两个导线段均能够处于有效磁场中，保证两个振动***30的音圈可获得的有效磁场强度较大，增强发声装置的声音响度。当然，在其它实施例中，也可以将振动***30的扁平音圈32远离其振膜31的导线段伸入磁间隙21，振动***30的扁平音圈32靠近其振膜31的导线段位于磁间隙21外。
其中，一实施例中，两个振动***30的扁平音圈32在磁路***20的周向间隔分布。即两个振动***30的扁平音圈32在任意一个振膜31上的正投影沿该振膜31的周向间隔，如此避免了两个振动***30的扁平音圈32在磁间隙21的深度方向共用空间的情况，从而使得每一扁平音圈32均能够充分利用磁间隙21在深度方向的空间，能提升振动***30的振动效果。当然，在其它实施例中，也可以将两个振动***30的扁平音圈32相对设置，即两个振动***30的扁平音圈32在磁间隙21的深度方向共用空间。
一实施例中，每个振动***30均包括两个扁平音圈32，两个扁平音圈32的中心轴线与两个振动***30的振动方向垂直。即同一个振动***30的两个扁平音圈32分设于中心磁体22的两相对侧，且振动***30的两个扁平音圈32均设于振膜31，并均能伸入磁间隙21，如此能够保证振膜31在振动时受力均匀，降低振动***30发生偏振的可能，提升振动***30的发声性能。当然，在其它实施例中，振动***30也可以仅包括一个扁平音圈32，或 者振动***30包括三个、四个或更多扁平音圈32。
一实施例中，磁间隙21包括相对的两个第一间隙211和相对的两个第二间隙212，两个第一间隙211和两个第二间隙212沿中心磁体22的周向依次交替分布，第一连接部243设于第一间隙211和第二间隙212的交接处，其中一个振动***30的两个扁平音圈32伸入两个第一间隙211，另一个振动***30的两个扁平音圈32伸入两个第二间隙212。即其中一个振动***30的两个扁平音圈32各伸入一个第一间隙211，另一个振动***30的两个扁平音圈32各伸入一个第二间隙212。其中，发声装置可以呈方向或圆形，即中心磁体22可以呈方形或圆形，或者中心磁体22呈三变形、五边形、六边形或八边形等等。当中心磁体22大致呈方形时，相当于第一连接部243设于中心磁体22的角部处的磁间隙21，如此能充分利用中心磁体22周向上的空间。当然，在其它实施例中，也可以将第一连接部243设于第一间隙211或第二间隙212，而为了避免其中一个振动***30的扁平音圈32，可以将第一连接部243朝另一振动***30的方向弯折设置，以给振动***30的扁平音圈32提供避让空间。
请结合参考图3至图5或者结合参考图6和图7，一实施例中，两个中心导磁板24均包括第一导磁部241和第一连接部243，两个中心导磁板24的第一连接部243相对设置，且两个中心导磁板24的第一连接部243呈相互朝向弯折的弯折状，并相互连接。即每一中心导磁板24均包括第一导磁部241和第一连接部243，中心磁体22设于两个第一导磁部241之间，每一个第一连接部243均设于第一间隙211和第二间隙212的交接处，每一个中心导磁板24的第一连接部243均朝另一中心导磁板24的方向弯折设置，以与另一中心导磁板24的第一连接部243连接，如此能够增加中心磁体22在两个中心导磁板24之间的稳定性。当然，在其它实施例中，第一连接部243也可以呈平直状，即第一连接部243不弯折，或者两个中心导磁板24的第一连接部243之间通过连接结构进行连接，例如在两个中心导磁板24的第一连接部243设置连接件。
一实施例中，中心导磁板24至少包括分设于第一导磁部241的两相对侧的两个第一连接部243。即中心导磁板24能够通过第一导磁部241两相对侧的第一连接部243与壳体10连接，既增大了中心导磁板24与壳体10的连接 面积，也使得第一导磁部241两相对侧受力均匀，从而能提升中心导磁板24的稳定性，保证磁路***20在振动过程中保持稳定。一些实施例中，第一连接部243的数量还可以为三个、四个或更多等等。当然，在其它实施例中，也可以仅在第一导磁部241的一侧第一连接部243。
进一步地，一实施例中，边导磁板25包括环形连接部251和边导磁部252，环形连接部251与壳体10连接，边导磁部252连接于环形连接部251的内侧，边磁体23朝向两个振膜31的表面均设有边导磁部252。具体而言，磁路***20包括两个边导磁板25，其中一个边导磁板25设于边磁体23朝向其中一个振膜31的一侧，另一个边导磁板25设于边磁体23朝向另一个振膜31的一侧，每一个边导磁板25均包括环形连接部251和边导磁部252。
可以在环形连接部251的内侧设置多个边导磁部252，边导磁部252的数量可以根据边磁体23的数量设置，如可以对应每一边磁体23设有一个边导磁部252。使得环形连接部251与边导磁部252一体成型，相较于设置多个独立边导磁板25的方式，如此可以使得边导磁部252与环形连接部251连接为一体，能够减少发声装置的零部件数量，从而有利于减少装配工序，提高生产效率。而且通过环形连接部251的外周缘与壳体10连接，能够提升边导磁板25的连接稳定性。当然，在其它实施例中，边导磁部252也可以呈环状，以能够设于多个边磁体23的朝向振膜31的表面。
请结合参考图3，一实施例中，第一连接部243与环形连接部251连接，中心导磁板与边导磁板为一体成型结构。如此能便于中心导磁板24和边导磁板25制造成型，减少中心导磁板24和边导磁板25的连接工序。当然，在其它实施例中，也可以将第一连接部243与环形连接部251焊接在一起。另外，在其它实施例中，还可以将中心导磁板24和边导磁板25分体设置(参照图6和图7)。
请结合参考图1和图8，一实施例中，壳体10与边导磁板25一体注塑成型。即边导磁板25(环形连接部251)作为嵌件与壳体10一体注塑成型，如此能通过边导磁板25提升壳体10的结构强度，能提升壳体10与边导磁板25的连接稳定性，还能减少发声装置在装配过程中的零部件数量，减少装配工序。当然，在其它实施例中，壳体10为金属时，壳体10与中心导磁板24也可以为一体冲压等方式成型。另外，壳体10与中心导磁板24还可以通过粘 接或螺钉等结构固定在一起。
一实施例中，壳体10包括两个连接壳11，连接壳11呈两端开口设置，两个连接壳11的开口端相连接，两个中心导磁板24分别设于两个连接壳11内，且中心导磁板24的第一连接部243与连接壳11连接。即两个连接壳11分体设置，其中一个中心导磁板24与其中一个连接壳11连接，另一个中心导磁板24与另一个连接壳11连接。如此在安装时，可以将两个中心导磁板24分别安装于两个连接壳11，再将两个连接壳11的开口端相连接，能够便于壳体10与磁路***20的装配。当然，在其它实施例中，壳体10也可以为一个整体结构。此外，在其它实施例中，也可以将两个中心导磁板24的第一连接部243夹设于两个连接壳11之间。或者设置一个中心导磁板24时，中心导磁板24的第一连接部243夹设于两个连接壳11之间。
请结合参考图9和图10，一实施例中，振动***30还包括连接支架33，连接支架33连接振膜31和扁平音圈32。具体而言，振膜31包括具有中心部、环设于中心部外边缘的折环部、以及环设于折环部外边缘的边缘部，其中，折环部和边缘部均呈环状。连接支架33连接于振膜31朝向中心磁体22的一侧，即连接支架33连接于中心部朝向中心磁体22的一侧，扁平音圈32连接于连接支架33远离振膜31的一侧，如此能够便于扁平音圈42的固定连接，提升扁平音圈42的稳定性。当然，在其它实施例中，也可以通过增加扁平音圈32的尺寸来保证扁平音圈32的导线段能伸入磁间隙21。
连接支架33的结构具有多种，例如，一实施例中，每个振动***30均包括两个连接支架33和两个扁平音圈32，连接支架33包括第一固定部331和分设于第一固定部331两端的两个第二固定部332，第一固定部331连接振膜31，第二固定部332朝磁路***20延伸。其中一个扁平音圈32的一端连接其中一个连接支架33的一个第二固定部332，扁平音圈32的另一端连接另一个连接支架33的一个第二固定部332，另一个扁平音圈32的两端分别连接两个连接支架33的另一个第二固定部332。
具体而言，同一振动***30的两个扁平音圈32相对设置，即两个振动***30的扁平音圈32在中心磁体22的周向交替分布。在同一振动***30中，两个连接支架33相对设置，两个扁平音圈32和两个连接支架33沿振膜31的周向依次交替分布。其中一个扁平音圈32的两端分别连接两个连接支架 33的其中一个第二固定部332，另一个扁平音圈32的两端分别连接两个连接支架33的另外一个第二固定部332，使得两个连接支架33和两个扁平音圈32连接呈框状。如此设置，相当于使得两个连接支架33和两个扁平音圈32连接为一体，既增加了连接支架33和扁平音圈32的连接稳定性，也增加了两个扁平音圈32之间的稳定性，能够降低振动***30振动时扁平音圈32偏振的可能。当然，在其它实施例中，也可以将一个连接支架33仅对应连接一个扁平音圈32，或者仅设置一个连接支架33，将两个扁平音圈32连接于该连接支架33。
一实施例中，振动***30还包括定心支片34，定心支片34弹性连接扁平音圈32和壳体10。通过设置定心支片34连接扁平音圈32和壳体10，能够降低扁平音圈32朝垂直于振动方向的方向偏移运动，从而有效降低了音圈偏振现象，提高了发声装置的听音良率。
一实施例中，振动***30包括两个定心支片34，定心支片34包括第二连接部341和分设于第二连接部341两端的两个支撑部342，第二连接部341与壳体10连接，支撑部342与扁平音圈32连接。具体而言，定心支片34的两个支撑部342分设于边平音圈长度方向的两端，支撑部342包括弹性段344和支撑段343，弹性段344的一端连接第二连接部341，支撑段343的一端连接弹性段344的另一端，支撑段343与连接支架33上连接扁平音圈32的部分(第二固定部332)连接。如此能够减少振动***30中定心支片34的数量。其中，支撑段343也可以直接与扁平音圈32连接，或者支撑段343同时连接扁平音圈32和连接支架33(第二固定部332)。一实施例中，第二连接部341安装于两个连接壳11之间，以便定心支片34的固定。
此外，不同于定心支片34包括第二连接部341和两个支撑部342的实施例，请参照图11，另一实施例中，定心支片34包括固定段345、弹性段344和支撑段343，弹性段344的两端分别连接固定段345和支撑段343，固定段345与壳体10连接，支撑段343与扁平音圈32连接。其中，支撑段343可以直接与扁平音圈32连接，也可以与连接支架33上连接扁平音圈32的部分(第二固定部332)连接，或者支撑段343同时连接扁平音圈32和连接支架33(第二固定部332)。一实施例中，固定段345安装于连接壳11用于形成泄压孔12的缺口处，如此既能为定心支片34的安装提供让位，也能便于成型泄压孔 12，实现泄压功能。
请结合参考图9和图10，一实施例中，第二固定部332包括第一连接板333和第二连接板334，第一连接板333连接第一固定部331，并朝背离振膜31(与第一固定部331连接的振膜31)的方向延伸，第二连接板334连接第一连接板333远离第一固定部331的一侧，并朝远离另一第二固定部332的方向延伸，即两个第二固定部332的第二连接板334朝相互背离的方向延伸，扁平音圈32安装于第一连接板333朝向另一个第一连接板333的表面，定心支片34(支撑段343)连接于第二连接板334背离第一固定部331的表面。如此设置，使得第二固定部332既能固定扁平音圈32，也能固定定心支片34，且可以避免扁平音圈32和定心支片34(支撑段343)相干涉，也可以将扁平音圈32和定心支片34(支撑段343)接触，增加了装配的可选择性，以便于发声装置的装配。
请参考图12，在一实施例中，也可以将中心导磁板24的第一连接部243对应第一间隙211设置，中心导磁板24对应第二间隙212设有避让间隙，扁平音圈32自避让间隙伸入磁间隙，如此使得中心导磁板24的结构简单。其中，中心导磁板24的数量可以为一个或两个，中心导磁板24的数量为一个时，若将中心导磁板24的第一连接部243对应第一间隙211设置，则在中心导磁板24上对应第二间隙212设有避让间隙，而中心磁体背离中心导磁板24的一侧可以不设置中心导磁板24，该侧的振动***的扁平音圈32可以伸入第一间隙211或第二间隙212。中心导磁板24的数量为两个时，两个中心导磁板24分设于中心磁体22的两相对侧，即中心磁体22设于两个中心导磁板24的第一导磁部241之间，其中一个中心导磁板24的第一连接部243对应第一间隙211设置，并对应第二间隙212设有避让间隙。另一个中心导磁板24的第一连接部243对应第二间隙212设置，并对应第一间隙211设有避让间隙。
本发明还提出一种电子设备，该电子设备包括外壳和发声装置，该发声装置的具体结构参照上述实施例，由于本电子设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。其中，发声装置设于外壳内。电子设备可以为手机、平板电脑、电脑或如手表等可穿戴设备。
一实施例中，外壳具有安装腔，发声装置安装于安装腔，并将安装腔分 隔为第一声腔和第二声腔，其中一个振动***的振膜与第一声腔连通，另一个振动***的振膜与第二声腔连通，外壳设有两个出声孔，其中一个出声孔和第一声腔连通，另一个出声孔与第二声腔连通。如此设置，在两个振动***的振膜同向振动时，可以使两个出声孔出来的声波为相位相反的声波，以使得自两个出声孔出来的音波形成声偶极子，从而可以减小漏音的风险。而在两个振膜朝相反的方向振动时，可以增加出音量。当然，在其它实施例中，也可以仅设置一个出声孔，该出声孔连通第一声腔和第二声腔。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (11)

  1. 一种发声装置，其特征在于，包括：
    壳体；
    磁路***，包括中心磁路结构和边磁路结构，所述中心磁路结构包括中心磁体、分别设于所述中心磁体上下两侧的两个中心导磁板，每个所述中心导磁板包括与所述中心磁体对应的第一导磁部，至少一个所述中心导磁板包括由第一导磁部的边缘向外侧延伸设置的第一连接部，所述中心磁体设于两个所述第一导磁部之间，所述第一连接部与所述壳体连接；所述边磁路结构固定于所述壳体，所述边磁路结构包括环绕所述中心磁体设置的多个边磁体以及设于所述边磁体上下两侧的边导磁板，所述边磁体与所述第一连接部在所述中心磁体的周向间隔分布；所述中心磁体和所述中心导磁板与所述边磁体和边导磁板之间形成磁间隙；
    两个振动***，每一个所述振动***均包括振膜和设于所述振膜的音圈，所述振膜安装于所述壳体，且两个所述振膜分设于所述磁路***的两相对侧，每一所述振动***的音圈伸入所述磁间隙。
  2. 如权利要求1所述的发声装置，其特征在于，所述两个振动***的音圈均为环形音圈，所述两个环形音圈的中心轴线与所述两个振动***的振动方向平行；
    所述两个环形音圈分布于所述第一连接部的上下两侧。
  3. 如权利要求2所述的发声装置，其特征在于，每个所述振动***包括两个扁平音圈，所述两个扁平音圈的中心轴线与所述两个振动***的振动方向垂直；
    所述磁间隙包括相对的两个第一间隙和相对的两个第二间隙，两个所述第一间隙和两个所述第二间隙沿所述中心磁体的周向依次交替分布，所述第一连接部设于所述第一间隙和所述第二间隙的交接处；
    其中一个所述振动***的两个扁平音圈伸入所述两个第一间隙，另一个所述振动***的两个扁平音圈伸入所述两个第二间隙。
  4. 如权利要求1所述的发声装置，其特征在于，两个所述中心导磁板均包括所述第一导磁部和所述第一连接部，两个所述中心导磁板的第一连接部相对设置，且两个所述中心导磁板的第一连接部呈相互朝向弯折的弯折状，并相互连接。
  5. 如权利要求4所述的发声装置，其特征在于，所述壳体包括两个连接壳，所述连接壳呈两端开口设置，两个所述连接壳的开口端相连接，两个所述中心导磁板分别设于两个所述连接壳内，且所述中心导磁板的第一连接部与所述连接壳连接。
  6. 如权利要求1所述的发声装置，其特征在于，所述边导磁板包括环形连接部和边导磁部，所述环形连接部与所述壳体连接，所述边导磁部连接于所述环形连接部的内侧，所述边磁体朝向两个所述振膜的表面均设有所述边导磁部。
  7. 如权利要求6所述的发声装置，其特征在于，所述第一连接部与所述环形连接部连接，所述中心导磁板与所述边导磁板为一体成型结构。
  8. 如权利要求6所述的发声装置，其特征在于，所述壳体与所述边导磁板一体注塑成型。
  9. 如权利要求3所述的发声装置，其特征在于，所述振动***还包括连接支架，所述连接支架连接所述振膜和所述扁平音圈。
  10. 如权利要求9所述的发声装置，其特征在于，所述连接支架包括第一固定部和分设于所述第一固定部两端的两个第二固定部，所述第一固定部连接所述振膜，所述第二固定部朝所述磁路***延伸；
    每个所述振动***均包括两个所述连接支架和两个所述扁平音圈；
    其中一个所述扁平音圈的一端连接其中一个所述连接支架的一个第二固 定部，所述扁平音圈的另一端连接另一个所述连接支架的一个第二固定部；
    另一个所述扁平音圈的两端分别连接两个所述连接支架的另一个第二固定部。
  11. 如权利要求3所述的发声装置，其特征在于，所述振动***还包括定心支片，所述定心支片弹性连接所述扁平音圈和所述壳体；
    所述振动***包括两个所述定心支片，所述定心支片包括第三连接部和分设于所述第三连接部两端的两个支撑部，所述第三连接部与所述壳体连接，所述支撑部与所述扁平音圈连接。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117440304A (zh) * 2023-12-21 2024-01-23 歌尔股份有限公司 发声装置和电子设备
CN117459883A (zh) * 2023-12-21 2024-01-26 歌尔股份有限公司 发声装置和电子设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113099362B (zh) * 2021-03-31 2022-07-22 歌尔股份有限公司 发声装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010007440A2 (en) * 2008-07-17 2010-01-21 Strong Pacific (Hong Kong) Limited Earphone
CN209267799U (zh) * 2019-01-15 2019-08-16 歌尔科技有限公司 发声装置以及电子设备
CN209659588U (zh) * 2019-03-14 2019-11-19 歌尔股份有限公司 发声装置以及电子设备
CN211531284U (zh) * 2020-03-05 2020-09-18 瑞声科技(新加坡)有限公司 发声器件
CN113099362A (zh) * 2021-03-31 2021-07-09 歌尔股份有限公司 发声装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202014362U (zh) * 2011-03-01 2011-10-19 瑞声声学科技(常州)有限公司 多功能发声器
CN110418260B (zh) * 2018-04-27 2022-03-11 歌尔股份有限公司 一种发声单体、发声模组及电子终端
CN208386919U (zh) * 2018-06-25 2019-01-15 歌尔股份有限公司 发声器件及便携终端
CN108632728B (zh) * 2018-06-25 2020-08-11 歌尔股份有限公司 发声器件及便携终端
CN209283487U (zh) * 2019-01-15 2019-08-20 歌尔科技有限公司 双面发声器件和电子产品
CN109756828B (zh) * 2019-01-15 2021-02-19 歌尔股份有限公司 发声装置以及电子设备
US10631096B1 (en) * 2019-03-07 2020-04-21 Apple Inc. Force cancelling transducer
CN110933571B (zh) * 2019-12-13 2022-03-25 歌尔股份有限公司 发声装置和电子设备
CN110933570B (zh) * 2019-12-13 2021-11-16 歌尔股份有限公司 发声装置和电子设备
CN112165675B (zh) * 2020-10-22 2021-09-24 瑞声新能源发展(常州)有限公司科教城分公司 扬声器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010007440A2 (en) * 2008-07-17 2010-01-21 Strong Pacific (Hong Kong) Limited Earphone
CN209267799U (zh) * 2019-01-15 2019-08-16 歌尔科技有限公司 发声装置以及电子设备
CN209659588U (zh) * 2019-03-14 2019-11-19 歌尔股份有限公司 发声装置以及电子设备
CN211531284U (zh) * 2020-03-05 2020-09-18 瑞声科技(新加坡)有限公司 发声器件
CN113099362A (zh) * 2021-03-31 2021-07-09 歌尔股份有限公司 发声装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117440304A (zh) * 2023-12-21 2024-01-23 歌尔股份有限公司 发声装置和电子设备
CN117459883A (zh) * 2023-12-21 2024-01-26 歌尔股份有限公司 发声装置和电子设备
CN117459883B (zh) * 2023-12-21 2024-04-30 歌尔股份有限公司 发声装置和电子设备
CN117440304B (zh) * 2023-12-21 2024-04-30 歌尔股份有限公司 发声装置和电子设备

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