WO2020034727A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2020034727A1
WO2020034727A1 PCT/CN2019/089450 CN2019089450W WO2020034727A1 WO 2020034727 A1 WO2020034727 A1 WO 2020034727A1 CN 2019089450 W CN2019089450 W CN 2019089450W WO 2020034727 A1 WO2020034727 A1 WO 2020034727A1
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WO
WIPO (PCT)
Prior art keywords
sound
hole
sounding
waterproof
casing
Prior art date
Application number
PCT/CN2019/089450
Other languages
English (en)
Chinese (zh)
Inventor
王兴龙
韩志磊
Original Assignee
歌尔股份有限公司
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Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020034727A1 publication Critical patent/WO2020034727A1/fr

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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
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to the technical field of speakers, and in particular, to a sound generating device.
  • Terminal devices such as: mobile phones, cordless phones, notebook computers, digital cameras, Bluetooth headsets, etc.
  • the speaker the diaphragm will radiate the sound wave energy in the forward and reverse directions during operation.
  • the speaker only utilizes the sound wave energy radiated in the forward direction, but does not make good use of the sound wave energy radiated in the reverse direction. Therefore, the existing speakers generally can only realize the one-way sound function, which greatly restricts the application of the speakers.
  • the main object of the present invention is to provide a sound emitting device, which aims to realize the two-way sound emitting function of the sound emitting device.
  • the sound generating device includes a vibration system and a magnetic circuit system
  • the vibration system includes a diaphragm having a first surface and a second surface opposite the first surface;
  • the magnetic circuit system is located on a second surface side of the diaphragm
  • a first sounding hole is provided at a position where the sounding device is in communication with the space on the first surface side, and a second sounding hole is provided at a position where the sounding device is in communication with the space on the second surface side;
  • a waterproof and breathable piece is provided on the second sound hole.
  • the sound generating device further includes:
  • a sounder comprising the vibration system and a magnetic circuit system, the sounder is housed in the accommodation cavity, the sounder includes a front sound hole and a rear sound hole, and the front sound hole and the first sound hole The sound emitting hole is provided in communication, and the rear sound hole is provided in communication with the second sound hole.
  • the front sound hole is provided on a top surface of the sound generator, and the rear sound hole is provided on a bottom surface or a side surface of the sound generator.
  • an air guiding channel is formed between the surface of the sounder and the cavity wall of the accommodating cavity, and the air guiding channel communicates the rear sound hole and the second sound hole.
  • the sound generator is fixedly connected to a cavity wall of the accommodating cavity that surrounds the first sound hole, and the front sound hole is opposite to the first sound hole.
  • the cavity wall of the accommodating cavity is provided with spaced-apart yielding holes and the second sounding hole, and a side wall of the yielding hole is provided with a connecting piece, the strength of the connecting piece is higher than The strength of plastic, the connecting member is extended along the circumferential direction of the yielding hole, and the inside of the connecting member is formed as the first sounding hole;
  • the sound generator is fixedly connected to the connecting member, and the front sound hole is disposed opposite to the first sound hole.
  • the shell includes a first shell and a second shell, the first shell covers the second shell, and encloses the second shell to form the receiving cavity.
  • the first casing is provided with the first sounding hole
  • the second casing is provided with the second sounding hole.
  • the shell is a rectangular parallelepiped, and the first sounding hole and the second sounding hole are oppositely disposed.
  • the first casing is glued or ultrasonically welded with the second casing.
  • the sound generating device further includes a dustproof net, which is provided at the first sounding hole and blocks the first sounding hole.
  • the dust-proof net is accommodated in the accommodating cavity, and the dust-proof net includes a net body and a first frame surrounding the outer edge of the net, and the first frame surrounds the first frame.
  • a sounding hole is arranged and fixedly connected to the cavity wall of the accommodating cavity surrounding the first sounding hole, the mesh body covers the first sounding hole, and the sounder surrounds the front sounding hole The surface surrounds and is fixedly connected to the first frame.
  • the waterproof and breathable member includes a waterproof and breathable layer and a second frame surrounding the outer edge of the waterproof and breathable layer, the second frame is arranged around the second sound hole, and the waterproof and breathable layer is capped
  • the second sounding hole, the second frame is fixedly connected to a cavity wall of the accommodating cavity surrounding the second sounding hole, or is fixedly connected to an outer surface of the housing surrounding the second sounding hole ;
  • the waterproof and breathable member is a waterproof and breathable layer, and an outer edge of the waterproof and breathable layer is integrally injection-molded on a sidewall of the second sound hole.
  • the sound emitting device further includes a waterproof tape, which is provided on a surface of the housing and is arranged around the first sound hole;
  • the sound generating device includes a ring-shaped frame, the vibration system is installed at a first end of the frame, the magnetic circuit system is installed in the frame and located below the vibration system, and the frame
  • the first end is also provided with a front cover, the front cover is provided with the first sounding hole, the second end of the frame is provided with a rear cover, and the rear cover is provided with the Second sound hole.
  • the diaphragm of the vibration system when the sound generating device operates, the diaphragm of the vibration system generates vibrations and radiates sound wave energy to the forward direction (the first surface side of the diaphragm) and the reverse direction (the second surface side of the diaphragm) respectively.
  • the forward-radiated sound wave energy flows out through the first sounding hole on the sounding device, and the sound is radiated outward from the front of the sounding device; the reverse-radiated sound wave energy flows out through the second sounding hole in the sounding device, and
  • the sound emitting device emits sound from the side or the opposite side.
  • the sound generating device of the present invention has the advantages of simple structure, low process difficulty, and high reliability compared with most of the existing dual diaphragm speaker products on the market.
  • the dual diaphragm design is adopted.
  • the second diaphragm is In the case of a non-breathable material, the sound wave generated by the first diaphragm is transmitted to the second diaphragm to generate vibration and then make a sound. Since the second diaphragm emits sound through vibration, transmission loss occurs. Through its microporous propagation, transmission loss is unlikely to occur, and excellent sound emission characteristics in the second direction can be achieved.
  • FIG. 1 is a schematic structural diagram of an embodiment of a sound generating device according to the present invention.
  • FIG. 2 is a schematic structural view of the sound generating device in FIG. 1 from another perspective;
  • FIG. 3 is an exploded view of the sound generating device in FIG. 1;
  • FIG. 4 is a schematic sectional view of the sound generating device in FIG. 1;
  • FIG. 5 is a schematic structural diagram of another embodiment of a sound generating device according to the present invention.
  • FIG. 6 is a schematic structural diagram of another embodiment of a sound generating device according to the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of a sound generating device according to the present invention.
  • FIG. 8 is a schematic structural diagram of a sound generating device applied to a terminal device according to the present invention.
  • Label name Label name 100 Sound device 33 First border 10 shell 40 Waterproof and breathable parts 10a Air channel 41 Waterproof and breathable layer 11 First shell 43 Second border 111 First sound hole 50 Waterproof tape 1111 Stiffener 60a frame 113 Shell body 60b Front cover
  • fixed may be a fixed connection, may be a detachable connection, or be integrated into one; It is a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements, unless it is clearly defined otherwise.
  • fixed may be a fixed connection, may be a detachable connection, or be integrated into one; It is a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements, unless it is clearly defined otherwise.
  • the present invention provides a sound emitting device 100, which aims to realize the two-way sound emitting function of the sound emitting device 100.
  • the sound generating device 100 includes a vibration system 70 and a magnetic circuit system 80 (refer to FIG. 7).
  • the vibration system 70 includes a diaphragm, the diaphragm having a first surface and a second surface opposite to the first surface;
  • the magnetic circuit system 80 is located on the second surface side of the diaphragm
  • the sound emitting device 100 is provided with a first sound hole 111 at a position communicating with the space on the first surface side, and the sound emitting device 100 is provided with a second sound hole 131 at a position communicating with the space on the second surface side;
  • the second sound emitting hole 131 is provided with a waterproof and air-permeable member 40.
  • the diaphragm of the vibration system 70 When the sound generating device 100 is in operation, the diaphragm of the vibration system 70 generates vibrations to radiate sound wave energy in the forward direction (the first surface side of the diaphragm) and the reverse direction (the second surface side of the diaphragm), respectively.
  • the forward-radiated sound wave energy flows out through the first sound-emitting hole 111 on the sound-emitting device 100, and the sound is radiated outward from the front of the sound-emitting device 100; the reverse-radiated sound-wave energy passes through the second sound-emitting hole 100 131 flows out and radiates sound from the side or the opposite side of the sound emitting device 100.
  • the sound generating device 100 of the present invention has the advantages of simple structure, low process difficulty, and high reliability compared with most of the existing dual-diaphragm speaker products on the market. It adopts a dual-diaphragm design and a second diaphragm. In the case of a non-breathable material, the sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and then make a sound. Since the second diaphragm emits sound through vibration, transmission loss occurs.
  • the present invention uses a waterproof and breathable member 40 The sound propagates through its micropores, which is unlikely to cause transmission loss, and can achieve excellent sound emission characteristics in the second direction.
  • the sound generating device 100 further includes:
  • a housing 10 in which an accommodation cavity (not labeled) is formed, and the first sounding hole 111 and the second sounding hole 131 are opened on the cavity wall of the accommodation cavity;
  • the front sound hole 20a is provided in communication with the first sound hole 111
  • the rear sound hole is provided in communication with the second sound hole 131.
  • the front sound hole 20a is provided on a top surface of the sounder 20, and the rear sound hole is provided on a bottom surface or a side surface of the sounder 20.
  • the forward sound wave and the reverse sound wave of the diaphragm can be effectively prevented from interfering with each other, so that the two-way sound quality of the sound emitting device 100 is better.
  • An air guide channel 10a is formed between the surface of the sounder 20 and the cavity wall of the accommodating cavity, and the air guide channel 10a communicates the rear sound hole and the second sound hole 131. In this way, not only the rear sound hole and the second sound hole 131 can be communicated, so that the two-way sound function of the sound device 100 is more easily realized, but also the structure is simple, the processing is convenient, and the assembly is convenient.
  • the casing 10 is substantially rectangular parallelepiped, and the receiving cavity therein is also generally rectangular parallelepiped.
  • the top wall and the bottom wall of the receiving cavity are respectively provided with a first sounding hole 111 and a second sounding hole 131.
  • the sound generator 20 also has a substantially rectangular parallelepiped shape, and its size is smaller than the size of the accommodation cavity, so that the sound generator 20 can be accommodated in the accommodation cavity.
  • the front cover of the sounder 20 is provided with a front sound hole 20a for emitting sound waves
  • the plastic housing of the sounder 20 is provided with a rear sound hole for balancing the internal pressure of the sounder 20 (of course, in some other implementations)
  • a rear sound hole for balancing the air pressure inside the sounder 20 can also be provided on the magnetic circuit system).
  • the sound generator 20 can be directly connected to the cavity wall of the accommodation cavity through a snap connection, a screw connection, a screw connection, a glue connection, or other reasonable and effective connection methods.
  • it can also be indirectly connected to the cavity wall of the accommodating cavity through an intermediate piece (such as a bracket) to achieve fixing.
  • the front sound hole 20a of the sounder 20 is provided facing the first sound hole 111 and communicates with the first sound hole 111.
  • the specific connection method may be achieved through a pipe such as a duct, or the outer surface of the front cover (of the sound generator 20) surrounding the front sound hole 20a may be closely adhered to the first sound hole 111 surrounding the accommodation cavity. Wall of the cavity so that the front sound hole 20a of the sounder 20 is directly connected with the first sound hole 111.
  • the size of the sounder 20 is smaller than the size of the accommodation cavity, there can be a certain distance between the surface of the sounder 20 and the cavity wall of the accommodation cavity to form an air guide channel 10a, so that the air guide channel 10a is used Connect the rear sound hole of the sounder 20 with the second sound hole 131 (Of course, in some other embodiments, the rear sound hole may be opened on the bottom surface of the sounder 20. At this time, the surface of the sounder 20 and the receiving cavity There is no distance between the cavity walls).
  • the diaphragm of the sounder 20 vibrates to the forward direction (the side of the diaphragm facing the first sound hole 111) and the reverse direction (a side of the diaphragm facing away from the first sound hole 111). Side) radiates sound wave energy.
  • the forward-radiated sound wave energy flows out through the front sound hole 20a on the sounder 20 and through the first sound hole 111 on the housing 10 of the sound device 100, and radiates sound outward from the front of the sound device 100;
  • the radiated sound wave energy flows into the air-conducting channel 10a in the casing 10 of the sounding device 100 through the rear sound hole in the sounder 20, and then flows out through the second sounding hole 131 in the casing 10 of the sounding device 100.
  • the sound is emitted from the side or the opposite side.
  • the sound generating device 100 of the present invention has the advantages of simple structure, low process difficulty, and high reliability compared with most of the existing dual-diaphragm speaker products on the market. It adopts a dual-diaphragm design and a second diaphragm. In the case of a non-breathable material, the sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and then make a sound. Since the second diaphragm emits sound through vibration, transmission loss occurs. The sound propagates through its micropores, which is unlikely to cause transmission loss, and can achieve excellent sound emission characteristics in the second direction.
  • the sound generator 20 is fixedly connected to a cavity wall of the accommodating cavity surrounding the first sound hole 111, and the front sound hole 20a and the first sound The holes 111 are oppositely disposed.
  • the surface of the sounder 20 surrounding the front sound hole 20a is provided around the first sound hole 111 and is fixedly connected to the cavity wall of the accommodating cavity that surrounds the first sound hole 111.
  • the outer surface of the front cover (of the sound generator 20) that surrounds the front sound hole 20a surrounds the first sound hole 111 and is fixedly connected to the cavity wall of the accommodation cavity that surrounds the first sound hole 111.
  • the front cover and the cavity wall can be directly fixedly connected by adhesive bonding, snap-on connection, screw connection, or other reasonable and effective methods, or through middleware (such as a seal ring, an air guide ring, a frame, and a bracket). Etc.) and indirectly fixed the connection by glue connection, snap connection, screw connection, or other reasonable and effective methods.
  • the position of the front sound hole 20a and the position of the first sound hole 111 can be made close, so that the front sound hole 20a can face the first sound hole 111, so that the forward-radiated sound wave energy of the sounder 20 can smoothly pass through the first sound hole 20a.
  • a sound hole 111 sounds outward.
  • the structure is simple, the manufacturing is convenient, the assembly is fast, and the stability and reliability are high.
  • the cavity wall of the accommodating cavity is provided with spaced-apart yield holes and the second sounding hole 131.
  • a connecting member 115 is convexly protruded on a side wall of the connecting member 115.
  • the connecting member 115 has a strength higher than that of plastic.
  • the connecting member 115 is extended along the circumferential direction of the yielding hole. Mentioned first sound hole 111;
  • the sound generator 20 is fixedly connected to the connecting member 115, and the front sound hole 20 a is opposite to the first sound hole 111.
  • the top wall of the accommodation cavity inside the housing 10 is provided with a yield hole
  • the bottom wall of the accommodation cavity inside the housing 10 is provided with a second sounding hole 131.
  • a mounting groove is provided on a side wall of the positioning hole, and the mounting groove is extended along the circumferential direction of the positioning hole and communicates end to end to form a circular mounting groove.
  • the connecting piece 115 is arranged in a ring shape and has an outer edge and an inner edge.
  • the connecting piece 115 is arranged around the yield hole, and the outer edge of the connecting piece 115 is inserted and held in the installation groove.
  • the inner edge of the connecting piece 115 It is enclosed to form a first sound hole 111. It should be noted that the structure in which the outer edge of the connecting member 115 is inserted and clamped in the installation groove can be obtained by integral injection molding in a mold.
  • the outer surface of the front cover (of the sound generator 20) surrounding the front sound hole 20a surrounds the first sound hole 111 and is fixedly connected to the lower surface of the connecting member 115 surrounding the first sound hole 111.
  • the front cover and the connecting member 115 may be directly fixedly connected by glue, snap connection, screw connection, or other reasonable and effective methods, or may be connected by middleware (such as a seal ring, an air guide ring, a frame, Brackets, etc.) and indirectly fixed connection by glue, snap connection, screw connection, or other reasonable and effective methods.
  • the connecting member 115 may be generally made of a rigid material, such as a steel plate or a ceramic plate, so that its strength is higher than that of plastic.
  • the volume of the sounding device 100 can be effectively reduced, but also the installation stability of the sounding device 20 can be effectively improved, the structural stability of the sounding device 100 can be improved, and the sounding of the sounding device 100 can be improved. quality.
  • the casing 10 includes a first casing 11 and a second casing 13, and the first casing 11 covers the first casing 11.
  • Two housings 13 are enclosed with the second housing 13 to form the containing cavity.
  • the first housing 11 is provided with the first sounding hole 111, and the second housing 13 is opened. Mentioned second sound hole 131.
  • the first casing 11 or the second casing 13 can be opened or closed, so that the accommodation cavity inside the casing 10 can be exposed or hidden, thereby facilitating the arrangement, arrangement, and connection and fixing of the components therein. In this way, the production efficiency and reliability of the sound generating device 100 can be greatly improved.
  • the casing 10 is a rectangular parallelepiped, and the first sounding hole 111 and the second sounding hole 131 are oppositely disposed. In this way, not only can the structure of the sound generating device 100 be simpler, processing is more convenient, and assembly is faster, but also the two-way sound of the sound generating device 100 can be made smoother.
  • first shell 11 and the second shell 13 may be covered by gluing, ultrasonic welding, or other reasonable and effective methods.
  • the first casing 11 includes a casing body 113 and a connecting member 115, and the casing body 113 covers the second casing 13 and connects with the first casing 13.
  • the two shells 13 surround and form the containing cavity.
  • the inner surface of the shell body 113 at the top is provided with a yielding hole penetrating through the shell body 113, and the side wall of the yielding hole is provided with a mounting groove, and the mounting groove is extended along the circumferential direction of the yielding hole and ends. Communicate to form an annular mounting groove.
  • the connecting piece 115 is arranged in a ring shape and has an outer edge and an inner edge.
  • the connecting piece 115 is arranged around the yield hole, and the outer edge of the connecting piece 115 is inserted and held in the installation groove.
  • the inner edge of the connecting piece 115 It is enclosed to form a first sound hole 111.
  • the sound generating device 100 further includes a dustproof net 30, and the dustproof net 30 is disposed at the first sounding hole 111, and Blocking the first sound hole 111.
  • the dustproof net 30 may be disposed on the outer surface of the casing 10. Specifically, the outer edge of the dustproof net 30 is disposed around the first sounding hole 111 and is fixedly connected to the outer surface of the housing 10 surrounding the first sounding hole 111. At this time, the middle portion of the dustproof net 30 covers the first from the outside.
  • the sound emission hole 111 is used for protecting the dust and adjusting the acoustic performance of the first sound emission hole 111.
  • the fixed connection between the outer edge of the dust net 30 and the outer surface of the casing 10 can be directly achieved by means of glue bonding, or by middleware such as a frame or a seal ring, and by means of glue bonding or other reasonable and effective methods. Indirectly.
  • the dustproof net 30 can also be disposed on the inner surface of the casing 10, that is, on the cavity wall of the accommodation cavity.
  • the outer edge of the dustproof net 30 is disposed around the first sound emitting hole 111 and is fixedly connected to the cavity wall surrounding the first sound emitting hole 111 of the accommodating cavity (ie, the first sound emitting hole 111 is fixedly connected to the housing 10).
  • Inner surface at this time, the middle part of the dustproof net 30 covers the first sounding hole 111 from the inside, so as to protect the dust and adjust the acoustic performance of the first sounding hole 111.
  • the fixed connection between the outer edge of the dustproof net 30 and the cavity wall of the accommodating cavity can be directly achieved by means of glue bonding, or by using middle parts such as a frame, a seal ring, and the like or other reasonable and effective means. Way to achieve indirectly.
  • the dustproof net 30 may also be disposed in the first sound emitting hole 111.
  • the outer edge of the dustproof net 30 is disposed around the first sounding hole 111 and is fixedly connected to the side wall of the first sounding hole 111.
  • the middle portion of the dustproof net 30 blocks the first sounding hole 111 from the first sounding hole 111.
  • a sounding hole 111 is provided to protect the dust and adjust the acoustic performance of the first sounding hole 111.
  • the fixed connection between the outer edge of the dustproof net 30 and the side wall of the first sounding hole 111 can be directly implemented by integral injection molding (as shown in FIG. 5).
  • the dustproof net 30 in this embodiment may be a conventional dustproof net cloth or a dustproof net cloth with a waterproof function.
  • the dust-proof net 30 is accommodated in the accommodating cavity, and the dust-proof net 30 includes a mesh body 31 and is surrounded by the mesh body 31.
  • a first frame 33 on the outer edge of the mesh body 31 is disposed around the first sound hole 111 and is fixedly connected to a cavity wall of the accommodation cavity surrounding the first sound hole 111
  • the mesh body 31 covers the first sound hole 111, and a surface of the sound generator 20 surrounding the front sound hole 20a surrounds and is fixedly connected to the first frame 33.
  • the first frame 33 is a waterproof gasket, and further may be a waterproof foam.
  • the first frame 33 is bonded or injection-molded to the edge of the mesh body 31, and then the side of the first frame 33 and the edge of the mesh body 31 and the receiving cavity.
  • the cavity wall is adhered and fixed, and the other surface is adhered and fixed to the surface of the sounder 20. After the elastic waterproof foam is squeezed, a better waterproof sealing effect between the sounder 20 and the casing 10 can be achieved.
  • Such a setting not only has a simple structure, convenient manufacturing, fast assembly, high stability and reliability, but also the dustproof net 30 is located in the containing cavity, which is not easily damaged and has good durability.
  • the mesh body 31 in this embodiment may be a conventional dustproof mesh cloth or a dustproof mesh cloth with a waterproof function.
  • the sound generating device 100 further includes a waterproof and breathable member 40, and the waterproof and breathable member 40 is disposed at the second sound hole 131, and Blocking the second sound hole 131.
  • the waterproof and air-permeable member 40 may be disposed on the outer surface of the casing 10. Specifically, the outer edge of the waterproof and breathable member 40 is provided around the second sound hole 131 and is fixedly connected to the outer surface of the casing 10 surrounding the second sound hole 131. At this time, the middle portion of the waterproof and breathable member 40 covers the second from the outside.
  • the sound hole 131 is used for waterproofing and ventilating and adjusting the acoustic performance of the second sound hole 131.
  • the fixed connection between the outer edge of the waterproof and breathable member 40 and the outer surface of the casing 10 can be directly achieved by means of glue bonding, or by middleware such as a frame or a seal ring, and by means of glue bonding or other reasonable and effective methods. Indirectly.
  • the waterproof and air-permeable member 40 can also be disposed on the inner surface of the casing 10, that is, disposed on the cavity wall of the accommodation cavity.
  • the outer edge of the waterproof and breathable member 40 is disposed around the second sound emitting hole 131 and is fixedly connected to the cavity wall surrounding the second sound emitting hole 131 of the accommodating cavity (ie, the second sound emitting hole 131 is fixedly connected to the housing 10).
  • Inner surface at this time, the middle portion of the waterproof and breathable member 40 covers the second sound hole 131 from the inside to play a role of waterproofing and ventilating and adjusting the acoustic performance of the second sound hole 131.
  • the fixed connection between the outer edge of the waterproof and breathable member 40 and the cavity wall of the accommodating cavity can be achieved directly by means of glue bonding, or by using middle members such as a frame, a seal ring, and the like, or by using other suitable and effective Way to achieve indirectly.
  • the waterproof and breathable member 40 may also be disposed in the second sound emitting hole 131.
  • the outer edge of the waterproof and breathable member 40 is disposed around the second sounding hole 131 and is fixedly connected to the side wall of the second sounding hole 131.
  • the middle portion of the waterproof and breathable member 40 blocks the first sounding hole 131 from the second sounding hole 131.
  • the two sounding holes 131 are used for waterproofing and ventilating and adjusting the acoustic performance of the second sounding holes 131.
  • the fixed connection between the outer edge of the waterproof and air-permeable member 40 and the side wall of the second sound hole 131 can be directly implemented by integral injection molding (as shown in FIG. 5).
  • a waterproof breathable layer 41 may be directly selected, or a structure in which the waterproof breathable layer 41 is used and a frame is mounted on the outer edge thereof.
  • the waterproof breathable layer 41 may be a single-layer structure including only one waterproof breathable film, or a multilayer composite structure including at least a waterproof breathable film and a mesh fabric.
  • the waterproof breathable film can be a polytetrafluoroethylene waterproof breathable film (EPTFE film), a thermoplastic polyurethane waterproof breathable film (TPU film), a polyurethane waterproof breathable film (PU film), or other waterproof breathable film.
  • the mesh can be a PP non-woven fabric or other mesh.
  • the waterproof breathable member 40 includes a waterproof breathable layer 41 and a second surrounding the outer edge of the waterproof breathable layer 41.
  • a frame 43, the second frame 43 is disposed around the second sound hole 131, the waterproof and breathable layer 41 covers the second sound hole 131, and the second frame 43 is fixedly connected to the receiving cavity
  • the cavity wall surrounding the second sounding hole 131 is fixedly connected to the outer surface of the casing 10 surrounding the second sounding hole 131.
  • the second frame 43 is a waterproof gasket, and further may be a waterproof foam.
  • the second frame 43 is bonded or injection-molded to the edge of the waterproof and breathable layer 41, and then the edge of the second frame 43 and the waterproof and breathable layer 41 may be glued. It is fixedly connected to the cavity wall of the accommodating cavity surrounding the second sounding hole 131, or fixedly connected to the outer surface of the housing 10 surrounding the second sounding hole 131.
  • the second frame 43 is fixedly connected to the outer surface of the casing 10 surrounding the second sound hole 131.
  • Such an arrangement is not only simple in structure but also convenient to manufacture , Fast assembly, high stability and reliability.
  • the sound emitting device 100 in an embodiment of the sound emitting device 100 of the present invention, in order to improve the sealability of the product applying the sound emitting device 100 of the present invention around the first sound hole 111, the sound emitting device 100 further includes a waterproof tape. 50.
  • the waterproof tape 50 is disposed on the surface of the casing 10 and is disposed around the first sound hole 111.
  • two opposite sidewalls of the first sound-emitting hole 111 are provided with reinforcing ribs 1111.
  • the middle portion of the dust-proof net 30 can be fixedly connected to the reinforcing rib 1111, so that the installation stability thereof is enhanced, and the dust-proof net 30 is prevented from being affected by airflow and vibrating.
  • the sound generating device 100 includes a ring-shaped frame 60 a, the vibration system 70 is installed at a first end of the frame 60 a, and the magnetic circuit system 80 It is installed in the frame 60a and is located below the vibration system 70.
  • the first end of the frame 60a is further provided with a front cover 60b, and the front cover 60b is provided with the first sounding hole 111.
  • a rear cover 60c is provided on the second end of the frame 60a, and the second sound hole 131 is provided on the rear cover 60c.
  • the sound generating device 100 further includes a dustproof net 30 and a waterproof and breathable member 40, and the waterproof and breathable member 40 is disposed at the second sound hole 131 and blocks the second sound hole 131.
  • the dustproof net 30 is provided at the first sounding hole 111, and blocks the first sounding hole 111.
  • the shape of the casing 10 can be set according to actual conditions, such as a rectangular parallelepiped, a rectangular parallelepiped, a cylindrical, or other special shapes.
  • the shape of the first sounding hole 111 and the shape of the second sounding hole 131 can also be set according to the actual situation, for example, they can be set to be circular, rectangular, square, or other special shapes.
  • the present invention also proposes a terminal device 300.
  • the terminal device 300 includes a protective case 200 and the aforementioned sound emitting device 100 installed in the protective case 200.
  • the specific structure of the sound emitting device 100 Reference is made to the foregoing embodiments. Since the terminal device 300 adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the technical solutions of all the foregoing embodiments, and will not be described in detail here.
  • the protective shell 200 is provided with a first terminal sound hole 210 communicating with the first sounding hole 111 and a second terminal sound hole 230 communicating with the second sounding hole 131.
  • the protective shell 200 has oppositely disposed front and rear sides and sides connecting the front and reverse sides.
  • the first terminal sound hole 210 is provided on the front of the protective case 200, and the second terminal sound hole 230 is provided.
  • the opposite side of the protective case 200 (as shown in FIG. 8); or
  • the first terminal sound hole 210 is provided on the side of the protective case 200, and the second terminal sound hole 230 is provided on the opposite side (not shown) of the protective case 200; or,
  • the first terminal sound hole 210 is provided on the front surface of the protective case 200, and the second terminal sound hole 230 is provided on a side surface (not shown) of the protective case 200.
  • the terminal device 300 may be a mobile phone, a cordless phone, a notebook computer, a digital camera, a Bluetooth headset, a tablet computer, an MP3, an MP4, or another terminal device 300.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

L'invention concerne un dispositif de production de son, le dispositif de production de son comprenant un système de vibration et un système de circuit magnétique, le système de vibration comprenant un diaphragme vibrant et le diaphragme vibrant comprenant une première surface et une seconde surface orientée à l'opposée de la première surface ; et le système de circuit magnétique étant situé sur un côté de la seconde surface du diaphragme vibrant. Une position, en communication avec un espace sur le côté de la première surface, du dispositif de production de son est pourvue d'un premier trou d'émission de son, et une position, en communication avec un espace sur le côté de la seconde surface, du dispositif de production de son est pourvue d'un second trou d'émission de son. Un élément perméable à l'air étanche à l'eau est agencé sur le second trou d'émission de son. La solution technique de la présente invention peut réaliser une fonction de production de son bidirectionnelle d'un dispositif de production de son.
PCT/CN2019/089450 2018-08-13 2019-05-31 Dispositif de production de son WO2020034727A1 (fr)

Applications Claiming Priority (2)

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CN201810919595.9 2018-08-13
CN201810919595.9A CN109246560B (zh) 2018-08-13 2018-08-13 发声装置

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CN109246560B (zh) * 2018-08-13 2020-05-22 歌尔股份有限公司 发声装置
CN109905827B (zh) * 2019-03-21 2021-01-29 维沃移动通信有限公司 一种振动发声装置及移动终端
CN111065021B (zh) * 2019-12-06 2021-09-10 瑞声科技(新加坡)有限公司 发声器件
CN215187186U (zh) * 2021-03-01 2021-12-14 华为技术有限公司 一种扬声器和电子设备
CN217718365U (zh) * 2022-03-21 2022-11-01 海信视像科技股份有限公司 显示设备
CN218920606U (zh) * 2022-09-30 2023-04-25 瑞声光电科技(常州)有限公司 发声器件

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