WO2023273545A1 - Unité de production de son, ensemble haut-parleur et dispositif électronique - Google Patents

Unité de production de son, ensemble haut-parleur et dispositif électronique Download PDF

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Publication number
WO2023273545A1
WO2023273545A1 PCT/CN2022/088365 CN2022088365W WO2023273545A1 WO 2023273545 A1 WO2023273545 A1 WO 2023273545A1 CN 2022088365 W CN2022088365 W CN 2022088365W WO 2023273545 A1 WO2023273545 A1 WO 2023273545A1
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WO
WIPO (PCT)
Prior art keywords
cavity
shell
diaphragm
magnet
sounding unit
Prior art date
Application number
PCT/CN2022/088365
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English (en)
Chinese (zh)
Inventor
于龙欣
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歌尔股份有限公司
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Filing date
Publication date
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Publication of WO2023273545A1 publication Critical patent/WO2023273545A1/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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • 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
    • H04R9/045—Mounting
    • 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
    • H04R9/18—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency

Definitions

  • the invention relates to the technical field of acoustics, in particular to a sounding unit, a loudspeaker assembly and electronic equipment.
  • the sound quality is one of the important indicators to measure the quality of the speaker.
  • the sound quality The quality of the electronic equipment affects the performance of the product.
  • a resonant cavity is usually formed in the structure of the speaker module of the product to reduce the high frequency response, but the structure and shape of the speaker module of different products will be different.
  • different resonant cavity designs need to be targeted, resulting in technical problems of complex manufacturing process and poor versatility.
  • the main purpose of the present invention is to propose a sounding unit, aiming at solving the technical problems of complicated manufacturing process and poor versatility of the loudspeaker assembly provided with a resonant cavity in the prior art.
  • the sounding monomer proposed by the present invention includes:
  • a diaphragm for separating the interior space of the housing into a front acoustic cavity and a rear acoustic cavity
  • a cavity shell the cavity shell is arranged on the diaphragm, a resonant cavity is formed in the cavity shell to be acoustically isolated from the rear acoustic cavity, and the shell wall of the cavity shell is provided with a through holes of the resonator.
  • the resonant cavity is located on a side of the diaphragm facing away from the front acoustic cavity, and the through hole is provided on a shell wall of the cavity shell on a side close to the front acoustic cavity.
  • the chamber housing includes:
  • the bottom case is arranged on the side of the diaphragm facing away from the front acoustic cavity;
  • An upper cover is connected to the diaphragm, and covers the bottom case to form the resonant cavity surrounded by the bottom case; the through hole is arranged on the upper cover.
  • the bottom case and the diaphragm are integrated; and/or, the upper cover and the diaphragm are integrated.
  • the bottom of the bottom case is provided with an elastic supporting member.
  • the upper cover is a PET cover; and/or, the upper cover is made of heat dissipation material; and/or, the bottom case is made of heat dissipation material.
  • the diaphragm includes a dome and a peripheral connecting portion disposed on the outer periphery of the dome, and the cavity shell is disposed on the dome.
  • the sounding unit further includes:
  • the magnetic circuit assembly is arranged on the base;
  • a voice coil the voice coil is arranged in the magnetic field of the magnetic circuit assembly, and the voice coil is connected with the dome.
  • the magnetic circuit assembly includes:
  • the magnet unit is arranged on the base, the magnet unit includes an inner magnet and an outer magnet arranged outside the inner magnet, a magnetic field is formed between the inner magnet and the outer magnet;
  • a washer unit the washer unit includes a central washer arranged on the inner magnet and a peripheral washer arranged on the outer magnet;
  • the voice coil is arranged in the magnetic field between the inner magnet and the outer magnet, the inner magnet is arranged opposite to the dome, and the outer magnet is arranged opposite to the peripheral connecting portion.
  • an escape groove is provided at a position of the inner magnet corresponding to the cavity shell; an escape hole is provided at a position of the center washer corresponding to the cavity shell.
  • the through hole is covered with a breathable mesh cloth, and the sound resistance range of the breathable mesh cloth is 0-10000 MKS Rayls.
  • the number of the cavity shells is at least two.
  • the number of the through holes on one cavity shell is at least two.
  • sound-absorbing cotton and/or sound-absorbing particles are arranged in the cavity of the resonant cavity.
  • the shell wall of the cavity shell is made of flexible material.
  • the present invention also provides a loudspeaker assembly, including a casing and the above-mentioned sounding unit; It is divided into a front acoustic cavity and a rear acoustic cavity, and the shell is provided with a sound outlet connecting the front acoustic cavity with the outside world.
  • the present invention also provides an electronic device, comprising the above speaker assembly.
  • the loudspeaker assembly includes a casing and the above-mentioned sounding monomer; the sounding monomer is arranged in the casing, and the diaphragm of the sounding monomer separates the inner space of the casing into a front sound cavity and a rear sound cavity, and the casing There is a sound hole connecting the front sound cavity with the outside world.
  • a sounding unit is provided with a cavity shell on the diaphragm, and a resonant cavity is formed in the cavity shell, and a through hole communicating with the resonant cavity is opened on the wall of the cavity shell.
  • the through hole and the resonant cavity form a Helmholtz resonator, so that the air inside the front acoustic cavity can enter the resonance cavity through the through hole to realize resonance filtering, and realize the filtering function of high-frequency noise.
  • the sounding unit only by improving the structure of the sounding unit, the sounding unit has a resonant cavity structure for filtering high-frequency noise, without the need to specifically improve speaker assemblies with different shapes and structures, and can be applied to many different
  • the loudspeaker assembly with the shape structure achieves the effects of strong versatility and simplified manufacturing process.
  • Fig. 1 is a structural schematic diagram of an embodiment of the sounding unit of the present invention
  • Fig. 2 is a schematic diagram of a full section of the sounding unit of the embodiment in Fig. 1;
  • Fig. 3 is a schematic diagram of the explosion structure of the sounding unit of the embodiment in Fig. 1;
  • Fig. 4 is a structural schematic diagram of another embodiment of the sounding unit of the present invention.
  • Fig. 5 is a schematic diagram of a full section of the sounding unit of the embodiment in Fig. 4;
  • Fig. 6 is a schematic diagram of the explosion structure of the sound emitting unit of the embodiment in Fig. 5 .
  • the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
  • the present invention proposes a sounding unit, which aims to realize the function of the sounding unit with its own resonant cavity 201 by setting a resonant cavity 201 on the diaphragm 100 of the sounding unit, so that when the sounding unit is applied to different speaker components At this time, the resonant cavity 201 will not be affected by the structural shape of the loudspeaker component shell, and the filter function of the front cavity resonant cavity can be realized, which is conducive to improving the sharp noise such as high-frequency vocal lip-tooth sound, and improving the effect of hearing of the whole machine.
  • the sound unit of the present invention can be applied to any type of speaker assembly, and is not limited to a specific type.
  • the sounding unit is arranged in the housing (not shown) of the speaker assembly; the sounding unit includes a diaphragm 100 and a cavity shell 200 .
  • the diaphragm 100 is used to divide the inner space of the housing into a front acoustic cavity and a rear acoustic cavity;
  • the cavity shell 200 is arranged on the diaphragm 100 , and a resonant cavity 201 is formed in the cavity shell 200 to be acoustically isolated from the rear acoustic cavity.
  • the sounding unit vibrates the air through the diaphragm 100 to produce sound.
  • the diaphragm 100 separates the inner space of the housing into a front acoustic cavity and a rear acoustic cavity.
  • the rear acoustic cavity is used to ensure low-frequency sound effects
  • the front acoustic cavity It is used to ensure the high-frequency sound effect, and communicates with the sound hole of the shell through the front sound cavity, so that the sound can be transmitted smoothly.
  • the diaphragm 100 is provided with a cavity shell 200, and a resonant cavity 201 is formed in the cavity shell 200.
  • the resonant cavity 201 is isolated from the rear acoustic cavity, and at the same time, the resonant cavity 201 is connected to the front cavity through the through hole 221 on the wall of the cavity shell 200.
  • the sound cavity is connected, so that the sound in the front cavity can enter the resonant cavity 201 through the through hole 221 to realize high-frequency noise filtering, which greatly improves the sharp noise such as high-frequency vocal lip-tooth sound, and improves the sound quality performance of the speaker assembly.
  • the cavity shell 200 is arranged on the diaphragm 100, and communicates with the front acoustic cavity through the through hole 221, and the cavity shell 200 cooperates with the through hole 221 to form a Helmholtz resonator, so that the air in the front acoustic cavity
  • the through hole 221 enters the cavity shell 200 to resonate, thereby eliminating at least part of the high-frequency noise, realizing the filtering function of the front acoustic cavity, and improving the sound quality.
  • the installation position of the cavity shell 200 can be determined according to the actual situation, as long as the cavity shell 200 can form Helmholtz resonance with the through hole 221 communicating with the front acoustic cavity.
  • the cavity shell 200 can be set on the side of the diaphragm 100 facing the front acoustic cavity, at this time the through hole 221 can be set on the top wall or the side wall of the cavity shell 200 (the front acoustic cavity is located above the diaphragm 100 as an example);
  • the cavity shell 200 can be arranged on the side of the diaphragm 100 away from the front acoustic cavity, that is, the cavity shell 200 is located under the diaphragm 100, and the through hole 221 can be arranged on the top wall of the cavity shell 200;
  • the shell 200 is set through the diaphragm 100.
  • the diaphragm 100 is surrounded and connected to the shell side wall of the cavity shell 200.
  • the through hole 221 can be set on the shell top wall of the cavity shell 200 or a part of the shell side in the front acoustic cavity. on the wall. Its specific setting position is not limited here. Based on the above-mentioned several embodiments, the position of the cavity shell 200 on the extension plane of the diaphragm 100 may not be limited, for example, it may be arranged in the central area 110 of the diaphragm 100 Or the peripheral area 120 and the like.
  • connection mode between the cavity shell 200 and the diaphragm 100 can also be determined according to the actual situation.
  • the cavity shell 200 and the diaphragm 100 can be in an integral structure or a separate structure.
  • the cavity shell 200 and the diaphragm 100 are made of the same flexible material, so that the cavity wall of the resonator 201 can change in real time according to the vibration of the diaphragm 100 to adjust the high-frequency filtering effect, and can be manufactured by integral injection molding.
  • the cavity shell 200 can be partially connected to the diaphragm 100 separately, and the diaphragm 100 can form the bottom shell or the upper cover of the cavity shell 200 at this time; it can also be the entire cavity shell 200 Separately connected with the vibrating membrane 100, at this time, the two can be fixedly connected by bonding after molding separately.
  • the specific connection manner is not limited here.
  • the shape and structure of the cavity shell 200 can be spherical, cubic, columnar or other special shapes, etc., and its specific shape and structure can be determined according to the actual situation, as long as it can form a resonator with the through hole 221 .
  • the shape of the through hole 221 does not need to be limited, and the shape of the through hole 221 can be a square hole, a round hole, a conical hole, or a slit.
  • the cavity shell 200 in this embodiment is arranged on the diaphragm 100 of the sounding unit, and the cavity shell 200 cooperates with the through hole 221 to form a channel for filtering high-frequency noise in the front acoustic cavity.
  • the resonant structure, the setting position of the cavity shell 200 and the connection method with the diaphragm 100 are all determined inside the sounding unit according to the improvement of the structure of the sounding unit itself, which is consistent with the structure of the shell of the loudspeaker assembly where the sounding unit is installed.
  • the shape has little to do with it, so it can be applied to loudspeaker components with different shapes and structures to reduce noise and improve sound quality.
  • a sounding unit is provided with a cavity shell 200 on the diaphragm 100, a resonant cavity 201 is formed in the cavity shell 200, and a through hole 221 communicating with the resonant cavity 201 is opened on the shell wall of the cavity shell 200.
  • the diaphragm 100 separates the inner space of the housing into a front acoustic cavity and a rear acoustic cavity, by acoustically isolating the resonant cavity 201 from the rear acoustic cavity, and communicating with the front acoustic cavity through the through hole 221,
  • the through hole 221 and the resonant cavity 201 form a Helmholtz resonator, so that the air inside the front acoustic cavity can enter the resonant cavity 201 through the through hole 221 to realize resonance filtering and realize the filtering function of high-frequency noise.
  • the sounding unit only by improving the structure of the sounding unit, the sounding unit has a resonant cavity structure for filtering high-frequency noise, without the need to specifically improve speaker assemblies with different shapes and structures, and can be applied to many different In the loudspeaker assembly of the shape structure, the effects of strong versatility and simplified manufacturing process are achieved.
  • the resonant cavity 201 is located on the side of the diaphragm 100 away from the front acoustic cavity, and the through hole 221 is provided on the side of the cavity shell 200 close to the front acoustic cavity. shell wall.
  • the magnetic circuit components and support components inside the sounding unit are located on the side of the diaphragm 100 away from the front acoustic cavity, that is, most of the structure of the sounding unit
  • the layout is located in the rear acoustic cavity.
  • the cavity shell 200 is arranged inside the sounding unit without affecting the appearance of the sounding unit, so that the structure of the resonant cavity can be realized without changing the appearance and volume of the sounding unit. function.
  • the purpose of improving the sound quality can be achieved without changing the shell structure of the loudspeaker assembly on which the sound emitting unit is installed.
  • the cavity shell 200 includes a bottom shell 210 and an upper cover 220; the bottom shell 210 is arranged on the side of the diaphragm 100 away from the front acoustic cavity; the upper cover 220 is connected to the diaphragm 100, and cover it on the bottom case 210 to form a resonant cavity 201 surrounded by the bottom case 210; the through hole 221 is provided in the upper cover 220.
  • a relatively closed resonance is formed by setting the upper cover 220 on the bottom shell 210 to block the accommodating groove.
  • Cavity 201 and at the same time, by opening a through hole 221 on the upper cover 220, it is used to communicate with the resonant cavity 201 and the front acoustic cavity, so as to realize the function of the resonant cavity of the front cavity.
  • the bottom shell 210 is arranged on the side of the diaphragm 100 facing away from the front acoustic cavity, and the upper cover 200 can be arranged flush with the diaphragm 100, so as to ensure that the appearance, shape and volume of the structure remain unchanged. In this case, the function of setting a resonant cavity structure in the sounding unit is realized.
  • the upper cover 220 and the bottom shell 210 of the cavity shell 200 are provided separately, and the upper cover 220 and the bottom shell 210 can be connected by bonding to achieve the purpose of easy installation.
  • the shape of the bottom case 210 can be set as a regular rectangular structure, and the upper cover 220 can be set as a rectangular plate structure accordingly, which simplifies the design of the molding die and improves the process efficiency.
  • the material of the bottom case 210 and the upper cover 220 may be the same or different, and may be the same as or different from the diaphragm 100 .
  • the bottom shell 210 and/or the upper cover 220 can be made of flexible materials, so that the cavity of the resonant cavity 201 can be changed according to the vibration of the air in the front acoustic cavity, so as to respond to the changing The sound undergoes more accurate noise filtering.
  • the bottom case 210 and the diaphragm 100 are integrally structured.
  • the bottom case 210 can be formed with the diaphragm 100 concave toward the side facing away from the front acoustic cavity, and the upper cover 220 and the diaphragm
  • the membrane 100 is connected and covered on the top of the bottom case 210 to enclose and form the resonant cavity 201 .
  • the upper cover 220 may adopt a PET (Polyethylene terephthalate, polyethylene terephthalate) cover plate, and the through hole 221 is arranged on the PET cover plate.
  • the upper cover 220 can be made of heat-dissipating materials, so as to speed up the heat dissipation of the sounding unit and improve the performance of the whole machine.
  • the upper cover 220 and the diaphragm 100 are integrally structured. It can be understood that the diaphragm 100 is formed as the upper cover 220 part of the cavity shell 200, a through hole 221 is opened on the diaphragm 100, and a bottom case 210 is provided under the diaphragm 100 to pass through the bottom case 210 and the diaphragm 100.
  • the enclosure forms a resonant cavity 201 .
  • the bottom shell 210 is connected to the side of the diaphragm 100 away from the front acoustic cavity by means of adhesion.
  • the bottom case 210 can also be made of PET (Polyethylene terephthalate, polyethylene terephthalate material. Further, the bottom case 210 can be made of a heat dissipation material to speed up the heat dissipation of the sounding monomer and improve Machine performance.
  • PET Polyethylene terephthalate, polyethylene terephthalate material.
  • the bottom case 210 can be made of a heat dissipation material to speed up the heat dissipation of the sounding monomer and improve Machine performance.
  • the diaphragm 100 includes a dome 110 and a peripheral connection portion 120 disposed on the outer periphery of the dome 110 , and the cavity shell 200 is disposed on the dome 110 .
  • the dome 110 is located in the middle area of the diaphragm 100, and it is connected to the fixed part inside the sounding unit through the peripheral connection part 120.
  • the periphery of the dome is connected and supported, so that the dome 110 is suspended in the air, so as to vibrate smoothly and produce sound.
  • the cavity shell 200 is arranged on the dome 110 so that the resonant cavity 210 is located in the middle of the diaphragm 100 and vibrates together with the dome 110 to further improve the high-frequency noise filtering effect.
  • the dome 110 When the cavity shell 200 is set on the dome 110 of the diaphragm 100, the dome 110 can be concave or convex to form the bottom shell 210, and the front cavity resonance can be realized by connecting the upper cover 220 with the through hole 221 on the dome 110 cavity function.
  • a through hole 221 may be opened on the dome 110, and a bottom shell 210 with a receiving groove may be provided on the inside or outside of the dome 110, so as to realize the function of the front cavity resonant cavity.
  • the sounding unit also includes a base 300, a magnetic circuit assembly and a voice coil 500; the magnetic circuit assembly is arranged on the base 300; the voice coil 500 is arranged on In the magnetic field of the magnetic circuit assembly, the voice coil 500 is connected to the dome 110 .
  • the base 300 plays the role of support and fixation
  • a magnetic circuit assembly is provided on the base 300
  • the voice coil 500 is arranged in the magnetic field formed by the magnetic circuit assembly, so that when a changing current is passed into the voice coil 500, it will Movement under the action of magnetic induction force will drive the diaphragm 100 to vibrate to produce sound.
  • the diaphragm 100 is connected to the voice coil 500, and the voice coil 500 has a ring structure, which separates the diaphragm 100 into a dome 110 located inside the voice coil 500 and a peripheral connection part located outside the voice coil 500 120.
  • the magnetic circuit assembly includes a magnet unit 410 and a Washer unit 420; the magnet unit 410 is arranged on the base 300; the magnet unit 410 includes an inner magnet 411 and an outer magnet 412 arranged outside the inner magnet 411, and the inner magnet 411 and A magnetic field is formed between the outer magnets 412; the washer unit 420 includes a central washer 421 arranged on the inner magnet 411 and a peripheral washer 422 arranged on the outer magnet 412;
  • the voice coil 500 is disposed in the magnetic field between the inner magnet 411 and the outer magnet 412 , the inner magnet 411 is disposed opposite to the dome 110 , and the outer magnet 412 is disposed opposite to the peripheral connecting portion 120 .
  • the magnet unit 410 includes an inner magnet 411 and an outer magnet 412.
  • the inner magnet 411 and the outer magnet 412 have opposite magnetic properties and are arranged at intervals to form a magnetic field between the two.
  • the washer unit 420 is a magnetically conductive material.
  • a central washer 421 is arranged on the inner magnet 411, and a peripheral washer 422 is arranged on the outer magnet 412 to improve the utilization rate of the magnetic field.
  • the magnetic field formed between the inner magnet 411 and the outer magnet 412 is one facing the other, and the voice coil 500 is placed in the magnetic field between the inner magnet 411 and the outer magnet 412. When the current is applied, The voice coil 500 can move under the action of magnetic induction force, thereby driving the diaphragm 100 to move.
  • the dome 110 of the diaphragm 100 is set opposite to the inner magnet 411, and the peripheral connection part 120 is set opposite to the outer magnet 412, so the cavity shell 200 is set corresponding to the position of the inner magnet 411.
  • the inner magnet 411 corresponds to
  • the cavity shell 200 is provided with an avoidance groove 411a;
  • the central washer 421 is provided with an avoidance hole 421a corresponding to the position of the cavity shell 200, so as to make the internal structure layout of the sounding unit more compact.
  • the inner magnet 411 can be arranged in a ring structure, the inner cavity of the ring structure forms an avoidance groove 411a, and the outer magnet 412 is arranged on the outer periphery of the inner magnet 411 .
  • the central washer 421 can also be set as a ring structure to match the shape of the inner magnet 411, and the inner cavity of the ring structure forms an avoidance hole 421a;
  • the peripheral washer 422 can also be set as a ring structure, Set on the outer magnet 412 .
  • a bracket 600 may be provided on the peripheral washer 422 for fixing the peripheral connection portion 120 connected to the diaphragm 100 , so as to realize the structural reliability of the diaphragm 100 .
  • the through hole 221 is covered with a breathable mesh cloth (not shown in the figure), and the sound resistance range of the breathable mesh cloth is 0-10000 MKS Rayls.
  • the acoustic resistance at the through hole 221 can be adjusted, the filtering effect can be improved, and the high-frequency human voice and sound quality can be improved.
  • the breathable mesh can be a non-equal acoustic resistance mesh, and the partial aperture of the mesh layout can be changed to adjust the local acoustic resistance through the mesh weaving process or local coating, mixed weaving of various wires, and composite of different acoustic resistance meshes to achieve
  • the mesh aperture size on the breathable mesh cloth can be adjusted, so that the airflow velocity through the through holes 221 is consistent, so as to avoid noise caused by uneven air distribution.
  • the number of Helmholtz resonators formed in the sounding monomer is at least 2, and when the number of Helmholtz resonators is greater than or equal to 2, they can be evenly distributed on the diaphragm 100, further Improve high-frequency filtering effect.
  • the number of through holes 221 on one chamber shell 200 is at least two. It can be understood that a resonant cavity 201 is formed in one cavity shell 200, and at least two through holes 221 are provided to achieve the purpose of improving the high-frequency filtering effect.
  • a sound-absorbing material is provided in the resonant cavity 201 .
  • the cavity can be virtually enlarged, the design volume can be reduced, and the purpose of improving performance and sound quality can be achieved.
  • the bottom of the bottom case 210 is provided with an elastic supporting member 230 .
  • the cavity shell 200 considering that the cavity shell 200 is arranged on the diaphragm 100, the cavity shell 200 will vibrate together with the vibration of the diaphragm 100, and an elastic support 230 can be provided at the bottom of the bottom shell 210 to achieve improved
  • the purpose of polarization is to reduce high-frequency resonance, and at the same time, by arranging the elastic support member 230 on the base 300 , it can realize the structural support for the cavity shell 200 and improve the reliability of the structure.
  • the present invention also proposes a loudspeaker assembly, which includes a casing and a sounding unit.
  • a loudspeaker assembly which includes a casing and a sounding unit.
  • the sound emitting unit is arranged in the casing, and the diaphragm 100 of the sound emitting unit divides the inner space of the casing into a front acoustic cavity and a rear acoustic cavity, and the casing is provided with a sound hole connecting the front acoustic cavity and the outside.
  • the sounding unit vibrates the air through the diaphragm 100 to produce sound.
  • the diaphragm 100 separates the inner space of the housing into a front acoustic cavity and a rear acoustic cavity.
  • the rear acoustic cavity is used for To ensure the low-frequency sound effect, the front acoustic cavity is used to ensure the high-frequency sound effect, and the front acoustic cavity is connected with the sound outlet of the shell so that the sound can be transmitted smoothly.
  • the diaphragm 100 is provided with a cavity shell 200, and a resonant cavity 201 is formed in the cavity shell 200.
  • the resonant cavity 201 is isolated from the rear acoustic cavity, and at the same time, the resonant cavity 201 is connected to the front cavity through the through hole 221 on the wall of the cavity shell 200.
  • the sound cavity is connected, so that the sound in the front cavity can enter the resonant cavity 201 through the through hole 221 to realize high-frequency noise filtering, which greatly improves the sharp noise such as high-frequency vocal lip-tooth sound, and improves the sound quality performance of the speaker assembly.
  • the present invention also proposes an electronic device, which includes a loudspeaker assembly.
  • an electronic device which includes a loudspeaker assembly.
  • the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it has at least the technology of the above-mentioned embodiments. All beneficial effects brought by the scheme will not be repeated here.
  • the electronic device may be a mobile phone, a tablet computer, a speaker, and the like.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

L'invention concerne une unité de production de son, un ensemble haut-parleur et un dispositif électronique. L'invention concerne une unité de production de son comprenant une membrane et une coque de cavité de logement ; la membrane est utilisée pour diviser l'espace interne d'un boîtier en une cavité acoustique avant et une cavité acoustique arrière ; la coque de cavité de logement est prévue sur la membrane ; une cavité résonante isolée acoustiquement de la cavité acoustique arrière est formée dans la coque de cavité de logement ; et un trou traversant communiquant avec la cavité acoustique avant et la cavité résonante est formé dans la paroi de la coque de cavité de logement. Selon la solution technique de la présente invention, l'unité de production de son réalise la fonction de filtrage du bruit haute fréquence, l'unité de production de son a une structure de cavité résonnante pour le filtrage du bruit haute fréquence en améliorant seulement la structure de l'unité de production de son sans améliorer spécialement les ensembles de haut-parleurs ayant des structures d'apparence différentes, et l'unité de production de son est applicable aux ensembles de haut-parleurs ayant des structures d'apparence différentes, réalisant ainsi des effets de haute universalité et simplifiant le processus de fabrication.
PCT/CN2022/088365 2021-06-29 2022-04-22 Unité de production de son, ensemble haut-parleur et dispositif électronique WO2023273545A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110732689.7 2021-06-29
CN202110732689.7A CN113473334B (zh) 2021-06-29 2021-06-29 发声单体、扬声器组件以及电子设备

Publications (1)

Publication Number Publication Date
WO2023273545A1 true WO2023273545A1 (fr) 2023-01-05

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