WO2020098118A1 - Module de haut-parleur - Google Patents

Module de haut-parleur Download PDF

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Publication number
WO2020098118A1
WO2020098118A1 PCT/CN2018/125555 CN2018125555W WO2020098118A1 WO 2020098118 A1 WO2020098118 A1 WO 2020098118A1 CN 2018125555 W CN2018125555 W CN 2018125555W WO 2020098118 A1 WO2020098118 A1 WO 2020098118A1
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WO
WIPO (PCT)
Prior art keywords
top plate
bottom plate
shell
area
filling
Prior art date
Application number
PCT/CN2018/125555
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English (en)
Chinese (zh)
Inventor
王亚南
王文海
邵明辉
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020098118A1 publication Critical patent/WO2020098118A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers

Definitions

  • the invention relates to the technical field of electroacoustic conversion, in particular to a speaker module.
  • the filling area is filled with sound absorbing material, and in order to fill as much sound absorption as possible
  • the thickness of the material and the shell of the filling area is getting smaller and smaller. In this way, the shell portion of the filling area is prone to resonate during the vibration of the vibration system of the speaker, rubbing against the sound absorbing material, thereby generating noise.
  • the main purpose of the present invention is to propose a speaker module aimed at solving the resonance problem of a speaker module having at least two filled areas.
  • the present invention discloses a speaker module.
  • the speaker module includes:
  • Module shell the module shell is provided with a cavity
  • a loudspeaker assembly the loudspeaker assembly is provided in the cavity, dividing the cavity into a front cavity and a rear cavity; the rear cavity is provided with at least two filling areas, and the module housing and the filling The part corresponding to the zone is the shell of the filled zone;
  • Sound absorbing material the sound absorbing material is filled in the filling area
  • a structural reinforcement portion provided in the shell portion of the filling area.
  • the rear cavity is further provided with a non-filled area
  • the rear cavity is further provided with a non-filled area, which is immediately adjacent to the speaker assembly and isolates the speaker assembly and the filled area.
  • At least two of the filling areas are distributed on different sides of the speaker assembly.
  • the heights of the filling areas on different sides are different.
  • the number of the filling areas on the same side is at least two, and the heights are equal.
  • the shell portion of the filling area has a top plate, a side plate, and a bottom plate, the top plate is connected to the side plate, and the side plate is connected to the bottom plate.
  • the The structural reinforcement part is a support column, the support column is provided in the filling area, one end of which is connected to the top plate, and the other end is connected to the bottom plate.
  • the support column is perpendicular to the top plate and the bottom plate, respectively.
  • the number of the support columns is two, and the two support columns are arranged alternately;
  • the number of the support columns is plural, and the plurality of support columns are arranged alternately;
  • the number of the supporting columns is plural, the plural supporting columns are arranged alternately, and the plural supporting columns are distributed in a triangle shape.
  • the reinforcing part is a rib, and the rib is provided on the inner surface of the top plate and the inner surface of the bottom plate.
  • the number of the ribs provided on the top plate is at least two;
  • the number of the ribs provided on the top plate is at least two, and at least two ribs provided on the top plate intersect;
  • the number of the ribs provided on the top plate is at least two, and at least two of the ribs provided on the top plate intersect, and the intersections are arranged in a crisscross pattern;
  • the number of the ribs provided on the bottom plate is at least two;
  • the number of the ribs provided on the bottom plate is at least two, and at least two ribs provided on the bottom plate intersect;
  • the number of the ribs provided on the bottom plate is at least two, and at least two of the ribs provided on the bottom plate intersect, and the intersections are arranged in a crisscross pattern.
  • the structural reinforcement portion is a convex structure
  • the convex structure is convexly provided on the inner surface of the top plate and the The inner surface of the bottom plate.
  • the number of the raised structures provided on the top plate is at least two;
  • the number of the raised structures provided on the bottom plate is at least two.
  • the convex structure has a truncated cone shape.
  • the sound absorbing material is porous spherical particles
  • the sound absorbing material is zeolite particles or activated carbon particles.
  • the speaker assembly includes a vibration system and a magnetic circuit system
  • the speaker assembly includes a vibration system, a magnetic circuit system, and an auxiliary system, where the auxiliary system houses the vibration system and the magnetic circuit system.
  • At least two filling areas are provided in the rear cavity, and the sound absorbing material is filled in the filling area, so that F0 (resonant frequency) is reduced to the greatest extent, and the low-frequency frequency response is improved.
  • F0 resonance frequency
  • the structural reinforcement part is combined with the shell part of the filling zone, so as to reinforce the shell part of the filling zone, so as to strengthen the structural strength of the shell part of the filling zone and improve the The resistance to vibration deformation, so that when the vibration is transmitted to the shell of the filling area, the resonance of the shell of the filling area is effectively suppressed, the friction between the shell of the filling area and the sound absorbing material is reduced, the noise is reduced, and the structure of the sound absorbing material is broken. Ensure the acoustic performance of the product.
  • FIG. 1 is a schematic structural diagram of a speaker module in an embodiment of the invention.
  • FIG. 2 is a schematic top view of a speaker module according to an embodiment of the invention.
  • FIG. 3 is a schematic structural diagram of a speaker module in an embodiment of the invention.
  • Fig. 4 is an enlarged view shown in dotted line in Fig. 3;
  • FIG. 5 is a schematic top structural view of a speaker module in an embodiment of the invention.
  • FIG. 6 is a schematic structural diagram of a speaker module in an embodiment of the invention.
  • FIG. 7 is an enlarged view shown in dotted line in FIG. 6;
  • FIG. 8 is a schematic top view of a speaker module according to an embodiment of the invention.
  • connection and “fixed” should be understood in a broad sense.
  • “fixed” may be a fixed connection, a detachable connection, or integrated; It is a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediary. It can be the connection between two elements or the interaction between two elements, unless otherwise clearly defined.
  • the invention provides a speaker module.
  • the speaker module 1 includes:
  • Module shell the module shell is provided with a cavity
  • a speaker assembly 200 (diaphragm is tightly shown in the figure), the speaker assembly 200 is disposed in the cavity, dividing the cavity into a front cavity 111 and a rear cavity; the rear cavity is provided with at least two filling areas (1122, 1123), the portion of the module housing corresponding to the filling area (1122, 1123) is the shell portion (120, 130) of the filling area;
  • Sound absorbing material (not shown in the figure), the sound absorbing material is filled in the filling area (1122, 1123);
  • Structural reinforcement (310, 320, 321, 323, 331, 333), the structural reinforcement is provided in the filling area shell (120, 130). Specifically, the structural reinforcement portion 310 is provided in the filling area shell portion 120, and the structural reinforcement portion (320, 321, 323, 331, 333) is provided in the filling area shell portion 130.
  • the module housing is provided with a cavity, which is used to accommodate the speaker assembly 200.
  • the speaker assembly 200 is a component that generates vibration and then emits sound when energized.
  • the speaker assembly 200 is disposed in the cavity, so that the cavity is divided into a front cavity 111 and a rear cavity.
  • a sound outlet 141 is provided in communication with the front cavity 111, and the sound emitted by the speaker assembly 200 is transmitted through the front cavity 111. It can be understood that the speaker assembly 200 is disposed in the cavity, that is, fixed in the cavity, and there are various ways of fixing, for example, fixing the speaker assembly 200 to the module housing.
  • the back cavity is provided with filling areas (1122, 1123), and the sound absorbing material is filled in the filling areas (1122, 1123).
  • there are at least two filled areas in this application, two filled areas are taken as examples, respectively filled area 1122 and filled area 1123), which can effectively reduce F0 and improve low-frequency frequency response.
  • the size of each filling area may be the same or different (in this application, the size of the filling area 1122 is larger than the filling area 1123), and the selection is made according to the actual product performance.
  • sound-absorbing materials such as zeolite, activated carbon, white carbon, etc.
  • the form can be powder or granules, which can be selected according to the actual situation.
  • the wall thickness of the shell portion (120, 130) of the filling area is generally low, so that the structural strength of the shell portion (120, 130) of the filling area is low.
  • the shells (120, 130) of the filling area are affected by the transmitted vibrations and resonate. This resonance is usually a high frequency It not only produces noise, but also causes the shells (120, 130) of the filling area to rub against the sound absorbing material, further increasing the noise, and even causing the sound absorbing material to rupture after long hours of work.
  • the structural reinforcement 310 in the filling area shell 120 and providing the structural reinforcement in the filling area shell 130 (310, 320, 321, 323, 331, 333, refer to the following embodiments for details) , That is, by joining the structural reinforcement to the shells (120, 130) of the filling area, the structural strength of the shells (120, 130) of the filling area is increased, and the resistance to vibration deformation of the shells (120, 130) of the filling area is increased. Therefore, the resonance of the shell parts (120, 130) in the filling area is suppressed, the occurrence of noise is reduced, and the acoustic performance is improved.
  • the rear cavity is further provided with a non-filled area 1121.
  • the non-filled area 1121 and the filled area (1122, 1123) are isolated from each other, and the sound-absorbing material is filled in the filled area (1122, 1123), and the non-filled area 1121 does not need to be filled with sound-absorbing material. This meets the needs of acoustic performance.
  • non-filled area 1121 is immediately adjacent to the speaker assembly 200 and isolates the speaker assembly 200 and the filled area (1122, 1123).
  • At least two of the filling areas (1122, 1123) are distributed on different sides of the speaker assembly 200.
  • the filled area 1122 and the filled area 1123 are distributed on different sides of the speaker assembly 200, so that the vibration caused by the speaker assembly 200 can be balanced, and further reduced The occurrence of resonance.
  • the heights of the filling areas (1122, 1123) on different sides are different.
  • the height of the filling area 1122 is greater than the height of the filling area 1123, so that the speaker module can adapt to different spatial volumes, ensure low-frequency frequency response, and meet the requirements of acoustic performance.
  • the number of the filling areas on the same side is at least two (not shown in the figure), and the heights are equal.
  • each filling area can be filled with different sound absorbing materials according to the actual acoustic performance requirements.
  • the shell portion (120, 130) of the filling area has a top plate (121, 131), side plates (122, 132), and a bottom plate (123, 133) ).
  • the top plate 121 is connected to the side plate 122
  • the side plate 122 is connected to the bottom plate 123
  • the top plate 131 and the side plate 132 is connected, and the side plate 132 is connected to the bottom plate 133.
  • the shell portions (120, 130) of the filling area are quadrangular prisms, and the length and width of the shell portions (120, 130) of the filling area are the shell portions of the filling area, respectively
  • the structural reinforcement part is a support post (310, 320), and the support post (310, 320) is provided in the filling area (1122, 1123).
  • the support post 310 is provided in the filling area 1122, one end of which is connected to the top plate 121 and the other end is connected to the bottom plate 123; the support post 320 is provided in the filling area 1123, one end of which is connected to the top plate 131, and the other end It is connected to the bottom plate 133.
  • the filling area shell 120 is taken as an example for description.
  • the filling area 1122 is also correspondingly quadrangular, which is a regular space.
  • the length and width of the shell 120 in the filled area are the thickness of the shell 120 in the filled area.
  • the support post 310 is provided to connect the top plate 121 and the bottom plate 123. The same is true for the filling area shell 130. Specifically, as shown in FIG.
  • both of the filled area shells 120 and 130 of the present embodiment satisfy the above conditions, but the size of the filled area shell 120 is larger, so three support pillars 310 are provided in the filled area shell 120, and in the filled area
  • the shell 130 is provided with a support post 320.
  • the support post 310 When the support post 310 connects the top plate 121 and the bottom plate 123, the support post 310 can bear a large force along the axial direction of the support post 310. In this way, the support pillar 310 forms an axial support for the top plate 121 and the bottom plate 123.
  • the support pillar 310 increases the resistance to vibration deformation of the shell portion 120 of the filling area. In this way, when the speaker assembly 200 generates vibrations and transmits the vibrations to the filled area shell 120, due to the support effect of the support post 310, the resonance of the filled area shell 120 is greatly suppressed.
  • the size of the support pillar 310 can be made sufficiently small to reduce the occupation of the volume of the filling area 1122 by the support pillar 310, thereby achieving
  • the resonance is suppressed, the occurrence of noise is reduced, the distortion is reduced, and the acoustic performance is improved.
  • the support column 320 of the filling area 1123 is provided.
  • the speaker module 1 Since the speaker module 1 has a plurality of filled areas, there may be one filled area shell satisfying the above condition, or more than two filled area shells satisfy the above condition.
  • the structural strength of the shell portion of the filling area can be enhanced by providing other forms of structural reinforcement.
  • both the filled area shell 120 and the filled area shell 130 satisfy the above conditions, but the size of the filled area shell 120 is larger than the size of the filled area shell 130, so the number of support posts 310 in the filled area shell 120 is Three.
  • the support post 310 is perpendicular to the top plate 121 and the bottom plate 123 respectively; the support post 320 is respectively perpendicular to the top plate 131 and the The bottom plate 133 is vertical.
  • the support post 310 is perpendicular to the top plate 121 and the bottom plate 123, respectively, for the sake of description.
  • the support column 310 can withstand a large axial force.
  • the top plate 121 and the bottom plate 123 resonate, the top plate 121 and the bottom plate 123 vibrate up and down at a high frequency relative to the filling area 1122.
  • the top plate 121 and the bottom plate 123 are perpendicular, which can suppress the occurrence of resonance to the greatest extent and prevent noise.
  • the number of the support columns is two, and the two support columns are arranged alternately;
  • the number of the supporting columns 310 is multiple, and the multiple supporting columns 310 are arranged alternately;
  • the number of the support pillars 310 is plural, the plurality of support pillars 310 are arranged alternately, and the plurality of support pillars 310 are distributed in a triangle shape.
  • the two support pillars 310 are arranged alternately to support the top plate 121 and the bottom plate 123 with a larger support range to further avoid resonance. occur.
  • the size of a single support column 310 can be made smaller.
  • the filling area 1122 occupied by the two support columns 310 The volume does not change too much, and because the range of support is wider, resonance can be suppressed more effectively.
  • the size of a single support post 310 can be further reduced, and the speaker module with a larger volume relative to the filling area 1122 is provided with multiple support posts 310 arranged alternately
  • the shell portion 120 of the filling area can be supported more evenly, effectively suppressing resonance.
  • the size of the filling area shell 130 is smaller than the size of the filling area shell 120.
  • the filling area shell 130 is provided with one support post 320, and the filling area shell 120 is provided with three support posts 310.
  • the plurality of support columns 310 are distributed in a triangle shape. It can be understood that the triangle distribution here may be that all the support columns 310 are distributed in a triangle shape to form a triangle; or that all support columns 310 may be formed in a plurality of triangles, such as every three supports
  • the post 310 forms a triangle. In this way, the triangular distribution of the support pillars 310 further improves the structural strength of the shell portion 120 in the filled area, and further suppresses resonance.
  • the support post 310 is disposed in the filled area shell 120 and connected to the top plate 121 and the bottom plate 123, so as to improve the structural strength of the filled area shell 120, so the support post 310 can use a variety of materials as long as The top plate 121 and the bottom plate 123 can be supported, for example, metal, plastic or rubber. The same is true for the filling area shell 130.
  • connection between the support post 310 and the top plate 121 and the bottom plate 123 may be various connections between the support post 310 and the top plate 121 and the bottom plate 123, for example:
  • the support post 310 is integrally formed with the top plate 121 and the bottom plate 123.
  • the support column 310 is integrally formed with the top plate 121 and the bottom plate 123 respectively, so that the integrity is stronger and the structural strength is better.
  • the support post 310, the top plate 121, and the bottom plate 123 are integrally formed by injection molding.
  • the support post 310 is bonded to the top plate 121 and the bottom plate 123.
  • adhesive is applied to both ends of the support post 310, and the adhesive is adhered to the top plate 121 and the bottom plate 123 respectively. After the adhesive is cured, the support post 310 is fixed to the top plate 121 and the bottom plate Between 123, thereby forming support for the top plate 121 and the bottom plate 123.
  • the support column 310 is ultrasonically connected to the top plate 121 and the bottom plate 123.
  • Ultrasonic connection is also called ultrasonic welding and ultrasonic welding.
  • Ultrasonic connection transfers ultrasonic energy between the top plate 121 and the support column 310, and between the bottom plate 123 and the support column 310. It uses the characteristics of large acoustic resistance at the interface of the welding to produce local The high temperature causes the support column 310 to fuse with the top plate 121 and the bottom plate 123 respectively, which does not require the addition of solvents, adhesives or other auxiliary products, and can completely replace the adhesive.
  • the shell portion 130 in the filled area is in the shape of a quadrangular prism, and the length and width of the shell portion 130 in the filled area are respectively smaller than the shell in the filled area
  • the structural reinforcement portion is a rib (321, 323), the rib 321 is provided on the inner surface of the top plate 131, and the rib 323 is provided on the inner surface of the bottom plate 133.
  • the pillar 120 of the filling area is provided with a support post 310
  • the shell 130 of the filling area is provided with ribs (321, 323).
  • the length and width of the filled area shell 130 are respectively less than ten times the thickness of the filled area shell 130, that is, the spans of the top plate 131 and the bottom plate 133 of this embodiment are not as good as those of the above embodiment.
  • the structural reinforcement in this embodiment is a rib (321, 323).
  • the ribs (321, 323) are in a strip shape, and the ribs (321, 323) are provided on the inner surface of the top plate 131 and the inner surface of the bottom plate 133 (that is, bonded to the shell 130 of the filling area) to avoid occupying the outside of the shell 130 of the filling area
  • the space, especially for micro speakers, is more conducive to product miniaturization.
  • the arrangement of the ribs (321, 323) enhances the deformation resistance of the shell 130 in the filling area, thereby improving the structural strength of the shell 130 in the filling area.
  • the filling area shell 130 has a tendency to deform, but due to the arrangement of the ribs (321, 323), the ribs (321, 323) hinder the filling
  • the deformation of the zone shell portion 130 occurs, thereby suppressing the occurrence of resonance. Since a single rib (321, 323) is in the shape of a strip and can cover a larger area, providing fewer ribs (321, 323) on the shell 130 of the filling area can improve the structure of the shell 130 of the filling area strength.
  • the material of the ribs (321, 323) may be plastic or metal, or the same as the material of the shell 130 of the filling area.
  • the ribs (321, 321, 321) are provided on the shell 130 of the filling area through integral molding and injection molding. 323).
  • the structural strength of the shell 130 of the filling area can be improved, so the size of the ribs (321, 323) can be made sufficiently small, so that the filling area 1123 is not substantially reduced
  • the occurrence of resonance in the shell 130 of the filling area is suppressed, thereby reducing the occurrence of noise, reducing distortion, and improving acoustic performance.
  • the number of the ribs 321 provided on the top plate 131 is at least two.
  • the size of the rib 321 can be much smaller than that of the top plate 131. Therefore, in order to make the structural strength of the top plate 131 increase more evenly as much as possible, to avoid the local structural strength being large and the local structural strength being small, the The number of ribs 321 is set to at least two, then these ribs 321 can be evenly distributed, thereby ensuring the structural strength of the top plate 131.
  • the number of the ribs 321 provided on the top plate 131 is at least two, and at least two of the ribs 321 provided on the top plate 131 Ribs 321 intersect.
  • the local structural strength of the top plate 131 is high and the local structural strength is low.
  • at least two ribs 321 are intersected, and the intersecting two ribs 321 have resistance to deformation in different directions, thereby further improving the structural strength of the top plate 131.
  • the number of the ribs 321 provided on the top plate 131 is at least two, and at least two ribs 321 provided on the top plate 131 are intersected, and the intersecting settings are in a crisscross shape. For example, cross shape, grid shape, etc. In this way, the structural strength of the top plate 131 can be further improved to prevent the local structural strength from being large and the local structural strength from being small, which is more conducive to suppressing resonance.
  • the number of the ribs 323 provided on the bottom plate 133 is at least two.
  • the size of the ribs 323 can be much smaller than that of the bottom plate 133. Therefore, in order to make the structural strength of the bottom plate 133 increase more evenly as much as possible, to avoid local structural strength and local structural strength
  • the number of ribs 323 is set to at least two, then these ribs 323 can be evenly distributed, thereby ensuring the structural strength of the bottom plate 133.
  • the number of the ribs 323 provided on the bottom plate 133 is at least two, and at least two of the ribs 323 provided on the bottom plate 133
  • the ribs 323 intersect.
  • at least two ribs 323 it is avoided that the local structural strength of the bottom plate 133 is high and the local structural strength is low.
  • at least two ribs 323 are intersected, and the intersecting two ribs 323 have bending resistance in different directions, thereby further improving the structural strength of the bottom plate 133.
  • the number of the ribs 323 provided on the bottom plate 133 is at least two, and at least two of the ribs 323 provided on the bottom plate 133 intersect, and the intersections are arranged in a crisscross pattern.
  • the intersecting arrangement is in a crisscross pattern. For example, cross shape, grid shape, etc. In this way, the structural strength of the bottom plate 133 can be further improved to prevent the local structural strength from being large and the local structural strength from being small, which is more conducive to suppressing resonance.
  • the structural reinforcement (331, 333) is a convex structure, and the convex
  • the raised structure 331 is convexly arranged on the inner surface of the top plate 131
  • the convex structure 333 is convexly arranged on the inner surface of the bottom plate 133.
  • the filling area shell 120 is provided with a supporting post 310, and the filling area shell 130 is provided with a convex structure (331, 333).
  • the speaker module is applied to an electronic product, such as a mobile phone, the space in the mobile phone is limited, and it is usually necessary to form an escape structure in the shell 130 of the filling area, so that the shell 130 of the filling area is a non-prismatic prism, that is, the filling Zone 1123 causes crowding, which is not a regular space.
  • the supporting columns and the ribs have a certain length, and the supporting columns and the ribs are not easy to be set in the shell 130 of the filling area, so this embodiment adopts the convex structure (331, 333)
  • the inner surface of the top plate 131 and the inner surface of the bottom plate 133 are convexly provided.
  • the convex structures (331, 333) are convex, so they can be distributed in a point shape, and are not limited to irregular spaces.
  • the size of the convex structure (331, 333) can be made small enough to prevent the volume of the filling area 1123 from being occupied too much, thereby suppressing the resonance of the shell portion 130 of the filling area without substantially reducing the volume of the filling area 1123 Occurs, which reduces noise, reduces distortion, and improves acoustic performance.
  • the material of the convex structure (331, 333) may be the same as the material of the shell 130 of the filling area.
  • the convex structure (331, 333) is directly formed.
  • the number of the convex structures 331 provided on the top plate 131 is at least two;
  • the number of the convex structures 333 provided on the bottom plate 133 is at least two.
  • the number of the convex structures 331 is set to at least two. Therefore, the convex structures 331 can be evenly arranged, and each convex structure 331 can be made small enough to avoid occupying the volume of the filling area 1123, and the structural strength of each part of the top plate 131 can be improved to avoid partial The structural strength is too small. The local structural strength is too large. The same is true for the convex structure provided on the bottom plate 133.
  • the convex structures (331, 333) have a truncated cone shape.
  • the convex structures (331, 333) are set to be shaped like a truncated cone, so that the area of the bottom surface (the surface in contact with the shell of the filling area) of the convex structure (331, 333) is larger than that of the convex structure.
  • the area of the top surface of (331, 333), that is, to ensure that the convex structure (331, 333) has a larger contact area with the shell 130 of the filling area reduces the volume of the filling area 1123.
  • the sound absorbing material is porous spherical particles. Specifically, it may be zeolite particles or activated carbon particles.
  • the speaker assembly 200 includes a vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm and a voice coil, and the voice coil drives the diaphragm to vibrate to generate sound.
  • Magnetic circuit system includes an inner magnetic circuit part and a side magnetic circuit part. The gap is formed between the inner magnetic circuit part and the side magnetic circuit part.
  • the voice coil is suspended in the magnetic gap, and the voice coil communicates with a changing current to achieve vibration.
  • the vibration system and the magnetic circuit system are provided in the cavity. It can be understood that the vibration system and the magnetic circuit system are fixed to the cavity, for example, to the module housing.
  • the speaker assembly 200 includes a vibration system, a magnetic circuit system, and an auxiliary system.
  • This embodiment is similar to the previous embodiment, except that the speaker assembly 200 further includes an auxiliary system that houses the vibration system and the magnetic circuit system, so that the speaker assembly forms a single speaker.
  • the auxiliary system here is generally in the shape of a shell, so as to be more conveniently fixed in the cavity.

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

L'invention concerne un module de haut-parleur. Le module de haut-parleur comprend : un boîtier de module, une cavité de réception étant disposée dans le boîtier de module ; un ensemble haut-parleur, l'ensemble haut-parleur étant disposé dans la cavité de réception et divisant la cavité de réception en une cavité avant et une cavité arrière, au moins deux zones de remplissage étant disposées dans la cavité arrière, et des parties du boîtier de module correspondant aux zones de remplissage sont des parties de boîtier de zone de remplissage ; un matériau absorbant le son, le matériau absorbant le son remplissant les zones de remplissage ; et des parties de renforcement de structure, les parties de renforcement de structure étant disposées sur les parties de boîtier de zone de remplissage. Au moyen des solutions techniques de la présente invention, la vibration de la pluralité de parties de boîtier de zone de remplissage est efficacement supprimée, et le frottement entre les parties de boîtier de zone de remplissage et le matériau absorbant le son est réduit, réduisant le bruit, et empêchant la structure du matériau absorbant le son d'être écrasée, garantissant les performances acoustiques du produit.
PCT/CN2018/125555 2018-11-16 2018-12-29 Module de haut-parleur WO2020098118A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811367001.4A CN109474869A (zh) 2018-11-16 2018-11-16 扬声器模组
CN201811367001.4 2018-11-16

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WO2020098118A1 true WO2020098118A1 (fr) 2020-05-22

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WO (1) WO2020098118A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109195065A (zh) * 2018-11-16 2019-01-11 歌尔股份有限公司 扬声器模组

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