WO2022061983A1 - Caisson de haut-parleur et terminal mobile - Google Patents

Caisson de haut-parleur et terminal mobile Download PDF

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Publication number
WO2022061983A1
WO2022061983A1 PCT/CN2020/120987 CN2020120987W WO2022061983A1 WO 2022061983 A1 WO2022061983 A1 WO 2022061983A1 CN 2020120987 W CN2020120987 W CN 2020120987W WO 2022061983 A1 WO2022061983 A1 WO 2022061983A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
cavity
sound
panel
diaphragm
Prior art date
Application number
PCT/CN2020/120987
Other languages
English (en)
Chinese (zh)
Inventor
吴军
杨虎虎
任圣
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022061983A1 publication Critical patent/WO2022061983A1/fr

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Classifications

    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present application relates to the technical field of electro-acoustics, and in particular, to a speaker box and a mobile terminal.
  • smartphones In the era of mobile Internet, smartphones have become the most common and convenient mobile terminal devices. At present, smartphones have various functions, one of which is to provide high-quality music functions, so speaker boxes for playing sound are widely used in smart mobile devices.
  • the existing speaker box generally has the function of speaker, but it does not have the function of speaker and receiver at the same time.
  • the structure of the existing speaker box is not compact enough, and it is difficult to achieve a lighter and smaller size, or it will be difficult to realize the miniaturization.
  • the magnetic performance is deteriorated and the acoustic performance is degraded, and ultimately it is difficult to meet the technical requirements of the miniaturization development trend of smart mobile devices.
  • One of the objectives of the present application is to provide a speaker box, which has the functions of speaking and receiving, and has a nested structure while realizing the functions of speaking and receiving, so that the speaker box has a compact structure on the premise It can also ensure magnetic performance and acoustic performance, which can well meet the needs of the development of miniaturization of mobile terminals.
  • a speaker box comprising a box body with an accommodating cavity and a sound generating unit arranged in the accommodating cavity, the box body comprising a first panel, a A second panel opposite to the panel and an enclosure connected between the first panel and the second panel; the second panel is provided with a first sound outlet, and the enclosure is provided There is a second sound hole;
  • the sound generating unit includes a basin frame, a magnetic bowl, a first vibration system, a second vibration system, a first magnetic circuit system for driving the first vibration system to sound, and a first magnetic circuit system for driving the second vibration system to sound. a second magnetic circuit system and a magnetic connection part connected to the first magnetic circuit system and the second magnetic circuit system;
  • the basin frame is connected to the box body, and the basin frame has a hollow inner hole;
  • the magnetic bowl includes a connecting portion connected with one end of the basin frame and an embedded portion extending from the connecting portion and passing through the hollow inner hole;
  • the embedded part has a cavity, the cavity has a cavity opening facing the first sound outlet hole, and a first through hole is formed through the bottom of the cavity;
  • the first magnetic circuit system is arranged in the cavity, the second magnetic circuit system is arranged between the outer wall of the embedded part and the inner side wall of the hollow inner hole, and the magnetic connection part is penetrated
  • the first through hole is connected to the first magnetic circuit system and the second magnetic circuit system at both ends, the first magnetic circuit system has a first magnetic gap located in the cavity, so the second magnetic circuit system has a second magnetic gap outside the cavity and inside the hollow inner hole;
  • the first vibration system includes a first diaphragm connected to the magnetic bowl and a first voice coil, one end of which is inserted in the first magnetic gap and used to drive the first diaphragm to emit sound;
  • the second vibration system includes a second diaphragm connected to the other end of the basin frame and a second voice coil, one end of which is inserted in the second magnetic gap and used to drive the second diaphragm to emit sound, so The second diaphragm and the box are enclosed to form a first front acoustic cavity communicating with the second sound outlet.
  • the embedded portion includes a first transverse plate disposed opposite to the first sound outlet hole and an annular longitudinal plate extending from the edge of the first transverse plate toward the first diaphragm, the The first through hole is provided through the first transverse plate, and the first transverse plate and the annular longitudinal plate are enclosed to form the concave cavity;
  • the connecting portion is a second transverse plate extending from an end of the annular longitudinal plate away from the first transverse plate in a direction away from the cavity opening.
  • the first magnetic circuit system includes a first main magnetic steel, a first auxiliary magnetic steel, a first main pole core, and a first auxiliary pole core;
  • the second magnetic circuit system includes a second main magnetic steel, a second auxiliary magnetic steel, a second main pole core, and a second auxiliary pole core;
  • the first main magnetic steel and the second main magnetic steel are respectively stacked on opposite sides of the magnetic connection part, and the first main magnetic steel, the magnetic connection part and the second main magnetic steel Steel integral molding;
  • the first auxiliary magnetic steel is stacked on the surface of the first transverse plate located in the cavity, and the first auxiliary magnetic steel is spaced on the outer circumference of the first main magnetic steel and is connected to the the first main magnetic steel is enclosed to form the first magnetic gap;
  • the first main pole core is stacked on the surface of the first main magnet steel facing the first diaphragm;
  • the first secondary pole core is stacked on the surface of the first secondary magnetic steel facing the first diaphragm;
  • the second secondary magnetic steel is stacked on the surface of the second transverse plate facing the second diaphragm, and is enclosed with the second main magnetic steel to form the second magnetic gap;
  • the second main pole core is stacked on the surface of the second main magnet steel facing the second diaphragm;
  • the second secondary pole core is stacked on the surface of the second secondary magnetic steel facing the second diaphragm.
  • the basin frame is provided with a groove for connecting the accommodating cavity and the hollow inner hole; the first transverse plate and/or the annular longitudinal plate is provided with a hollow inner hole. a second through hole communicating with the cavity.
  • the basin frame includes a hollow frame, two first extension arms and two second extension arms;
  • the two first extension arms and the two second extension arms both extend from the hollow frame body toward the second transverse plate and are connected with the second transverse plate, and the two first extension arms
  • the arms are arranged oppositely, the two second extension arms are arranged oppositely, and the adjacent first extension arms and the second extension arms enclose the groove;
  • the first transverse plate and/or the annular longitudinal plate are provided with four second through holes; and/or,
  • the first secondary pole core is provided with a gap that communicates with the second through hole; the second main magnetic steel is provided with a first escape port communicated with the second through hole; the second main pole The core is provided with a second escape port communicating with the first escape port.
  • the box body further includes an annular support platform extending from the first panel and protruding into the accommodating cavity, the connecting portion and the annular support platform are arranged opposite to each other at intervals, and the second vibration system and The second magnetic circuit system is arranged between the annular support platform and the connecting portion, and the second diaphragm, the annular support platform and the first panel are enclosed to form the first front acoustic cavity;
  • the annular support platform is provided with an opening for communicating the first front acoustic cavity and the second acoustic outlet.
  • the box body further includes a sound guide channel, and the sound guide channel extends from the annular support platform where the opening is provided.
  • the part extends to the part of the enclosure plate where the second sound outlet hole is arranged, and the sound guide channel is provided with a communication hole connecting the opening and the second sound outlet hole through.
  • the annular support table includes an annular support portion protruding from the first panel and a limiting portion extending from the annular support portion toward the connecting portion, and the second diaphragm is clamped. on the annular support portion, and the basin frame is connected to the surface of the second diaphragm facing away from the annular support portion; the limiting portion abuts the end of the second diaphragm and abuts The basin frame is close to the outer wall of the second diaphragm.
  • the second purpose of the present application is to provide a mobile terminal, including a speaker box and a terminal panel, the speaker box is the above-mentioned speaker box, the second panel is attached to the terminal panel, and the terminal panel A third sound outlet is provided, and the third sound outlet communicates with the first sound outlet.
  • a sealing member for sealing the terminal panel and the second panel is further provided between the terminal panel and the second panel.
  • the beneficial effect of the present application is that: in the speaker box provided by the present application, a first sound outlet hole is arranged on the second panel of the box body, a second sound outlet hole is arranged on the enclosure plate, and at the same time, the box body is respectively provided with a first sound outlet hole and a second sound outlet hole.
  • the magnetic connection part arranged in the first through hole connects the first magnetic circuit system and the second magnetic circuit system, which makes the thickness of the magnetic steel not decrease when the speaker box is miniaturized, and ensures the magnetic performance of the speaker box , which in turn has excellent acoustic performance.
  • the mobile terminal provided by the present application includes the above-mentioned speaker box, it has the functions of speaking and receiving, and at the same time has excellent acoustic performance.
  • the above-mentioned speaker box has a nested structure, it occupies a relatively small space in the mobile terminal. , so that the mobile terminal can be miniaturized.
  • FIG. 1 is a schematic three-dimensional structure diagram of a speaker box provided by an embodiment of the present application.
  • Fig. 2 is the sectional schematic diagram of A-A in Fig. 1;
  • Fig. 3 is the sectional schematic diagram of B-B in Fig. 1;
  • Fig. 4 is the exploded schematic diagram of Fig. 1;
  • FIG. 5 is a schematic three-dimensional structure diagram of the sound-generating unit after the speaker box of FIG. 1 is removed;
  • Fig. 6 is the schematic sectional view of C-C in Fig. 5;
  • FIG. 7 is a schematic three-dimensional structure diagram of the box body after the second panel is removed.
  • Fig. 8 is the three-dimensional structure schematic diagram of magnetic bowl
  • Fig. 9 is the three-dimensional structure schematic diagram of basin frame
  • Fig. 10 is a three-dimensional schematic diagram of the first main magnet, the connecting magnetic part and the second main magnet which are integrally formed;
  • FIG. 11 is a schematic three-dimensional structure diagram of the second main pole core
  • FIG. 12 is a schematic perspective view of a mobile terminal
  • Fig. 13 is a D-D cross-sectional schematic diagram in Fig. 12;
  • the speaker box 100 provided in the embodiment of the present application includes a box body 10 and a sound-generating unit 200 .
  • the box body 10 has a accommodating cavity 100 a , and the sound-generating unit 200 is arranged in the accommodating cavity 100 a .
  • the body 200 includes a basin frame 20 , a magnetic bowl 30 , a first vibration system 40 , a second vibration system 50 , a first magnetic circuit system 60 , a second magnetic circuit system 70 and a magnetic connection part 80 .
  • the box body 10 includes a first panel 101, a second panel 102, and an enclosure panel 103, wherein the first panel 101 and the second panel 102 are disposed opposite to each other, and the enclosure panel 103 connects the first panel 101 and the second panel 102.
  • the first panel 101 , the enclosure panel 103 and the second panel 102 enclose a receiving cavity 100a.
  • the second panel 102 is provided with a first sound outlet hole 1021
  • the enclosure panel 103 is provided with a second sound outlet hole 1031. Since the enclosure panel 103 is connected between the first panel 101 and the second panel 102, the first The sound outlet 1021 and the second sound outlet 1031 face two different directions, so that the speaker box 100 can emit sound from different directions.
  • the basin frame 20 is connected with the box body 10 , and the basin frame 20 has a hollow inner hole 201 .
  • the magnetic bowl 30 includes a connecting portion 301 and an embedded portion 302 , wherein the connecting portion 301 is connected to one end of the bowl frame 20 , and the embedded portion 302 extends from the connecting portion 301 and passes through the hollow inner hole 201 .
  • the embedded portion 302 has a cavity 3021 , the cavity 3021 has a cavity 3022 facing the first sound outlet hole 1021 , and a first through hole 3023 is formed through the bottom of the cavity 3021 .
  • the first magnetic circuit system 60 is disposed in the cavity 3021, the first magnetic circuit system 60 has a first magnetic gap 601, and the first magnetic circuit system 60 is used for driving the first vibration system 40 to emit sound.
  • the first vibration system 40 includes a first diaphragm 401 and a first voice coil 402; wherein, the first diaphragm 401 is connected to the magnetic bowl 30; one end of the first voice coil 402 is inserted in the first magnetic gap 601, and the other end is connected to the magnetic bowl 30.
  • the first diaphragm 401 is connected, and after the first voice coil 402 is powered on, the first diaphragm 401 can be driven to emit sound.
  • the second magnetic circuit system 70 is disposed between the outer wall of the embedded portion 302 and the inner side wall of the hollow inner hole 201 .
  • the second magnetic circuit system 70 has a second magnetic gap 701 , and the second magnetic circuit system 70 is used to drive the second magnetic circuit system 70 .
  • the vibration system 50 emits sound.
  • the second vibration system 50 includes a second diaphragm 501 and a second voice coil 502; wherein, the second diaphragm 501 is connected to the other end of the basin frame 20; one end of the second voice coil 502 is inserted into the second magnetic gap 701 and the other end is connected to the second diaphragm 501. After the second voice coil 502 is powered on, the second diaphragm 501 can be driven to emit sound.
  • the second diaphragm 501 is enclosed with the box body 10 to form a first front acoustic cavity 100b, and the first front acoustic cavity 100b is communicated with the second sound outlet hole 1031 .
  • the magnetic connection part 80 is penetrated in the first through hole 3023 , one end of the magnetic connection part 80 is connected to the first magnetic circuit system 60 , and the other end is connected to the second magnetic circuit system 70 .
  • the two magnetic circuit systems 70 communicate with each other.
  • the first sound outlet hole 1021 is arranged on the second panel 102 of the box body 10 and the second sound outlet hole 1031 is arranged on the enclosure plate 103 to realize the first sound outlet hole.
  • the speaker box 100 can emit sound in different directions;
  • a magnetic circuit system 60 is installed in the cavity 3021 of the magnetic bowl 30, and the second vibration system 50 and the second magnetic circuit system 70 for driving the second vibration system 50 to sound are installed on the outer wall of the cavity 3021 and the basin frame Between the inner side walls of the hollow inner hole 201 of the Therefore, the speaker box 100 can be miniaturized, and the sound generated by the first magnetic circuit system 60 driving the first vibration system 40 is transmitted from the first sound outlet 1021, while the second magnetic circuit system 70 drives the second vibration system.
  • the sound generated by 50 is transmitted to the second sound outlet 1031 through the first front sound cavity 100a and spreads out from the second sound outlet 1031, so that the speaker box 100 can realize sound in two directions, and the speaker box 100 has a loudspeaker.
  • the magnetic connecting part 80 is arranged between the first magnetic circuit system 60 and the second magnetic circuit system 70, the thickness of the magnetic field is not reduced when the speaker box 100 is miniaturized, and the speaker box 100 Still having good magnetic properties, the miniaturized speaker enclosure 100 has excellent acoustic properties.
  • the box body 10 includes an annular support table 104 , the annular support table 104 extends from the first panel 101 and is protruded in the accommodating cavity 100 a , and the annular support table 104 is spaced from the connecting portion 301 . Relative settings.
  • the second vibration system 50 and the second magnetic circuit system 70 are arranged between the annular support table 104 and the connecting portion 301, and the second diaphragm 501 is enclosed with the annular support table 104 and the first panel 101 to form the first front acoustic cavity 100b;
  • the support table 104 is provided with an opening 1041, and the opening 1041 is used for connecting the first front acoustic cavity 100b and the second sound outlet hole 1031, so that the sound generated by the second diaphragm 501 can be transmitted from the first front acoustic cavity 100b to the second sound outlet
  • the hole 1031 is transmitted to the outside through the second sound outlet hole 1031 .
  • the box body 10 further includes a sound guide channel 105 , and the sound guide channel 105 extends from the part of the annular support table 104 with the opening 1041 to the surrounding area.
  • the plate 103 is provided with a second sound outlet hole 1031, and the sound guide channel 105 is provided with a communication hole 1051, the communication hole 1051 penetrates the sound guide channel 105 for communicating the opening 1041 and the first sound outlet hole 1021, so that the second The sound generated by the diaphragm 501 propagates from the first front sound cavity 100b to the second sound outlet hole 1031 through the communication hole 1051, and finally propagates to the outside world.
  • the annular support table 104 includes an annular support portion 1042 and a limiting portion 1043 , wherein the annular support portion 1042 is protruded on the first panel 101 , and the limiting portion 1043 faces from the end surface of the annular support portion 1042 away from the first panel 101 .
  • the connecting portion 301 extends and protrudes.
  • the limiting portion 1043 is protruded from the end portion of the annular support portion 1042 close to the outer wall of the annular support portion 1042, so as to limit the position of the second diaphragm 501 and the basin frame 20, and the second diaphragm 501 is clamped and fixed on the On the annular support portion 1042, one end of the pot frame 20 abuts on the back of the contact surface between the second diaphragm 501 and the annular support portion 1042, so as to realize the fixation of the second diaphragm 501 by the pot frame 20 and the annular support portion 1042.
  • the limiting portion 1043 abuts on the end of the second diaphragm 501, and at the same time the limiting portion 1043 also abuts on the outer wall of the basin frame 20 close to the second diaphragm 501, the limiting portion 1043 can effectively limit the second vibration.
  • the movement of the diaphragm 501 in the non-vibration direction, and the limiting portion 1043 can also effectively limit the basin frame 20, so as to improve the firmness of the installation of the second diaphragm 501 and the basin frame 20, thereby improving the firmness of the entire speaker box 100. sex.
  • the annular support table 104 , the sound guiding channel 105 and the first panel 101 are integrally formed.
  • the annular support table 104 and the sound guiding channel 105 can be fixed and formed with the first panel 101 by welding respectively, and between the annular supporting table 104 and the sound guiding channel 105, the sound guiding channel 105 and the The enclosure plates 103 may also be fixed and formed by welding, but are not limited to these two methods.
  • the embedded portion 302 of the magnetic bowl 30 includes a first transverse plate 3024 and an annular longitudinal plate 3025, wherein the first transverse plate 3024 and the first sound outlet 1021 are disposed opposite to each other at intervals.
  • the annular longitudinal plate 3025 extends from the edge of the first transverse plate 3024 toward the first diaphragm 401 , and the concave cavity 3021 is formed by the first transverse plate 3024 and the annular longitudinal plate 3025 .
  • the connecting portion 301 of the magnetic bowl 30 is a second transverse plate, which extends from the end of the annular longitudinal plate 3025 away from the first transverse plate 3024 toward the direction away from the cavity 3022 .
  • the second transverse plate is connected to the basin.
  • the other end of the frame 20 is connected.
  • the end of the second transverse plate away from the cavity 3021 is connected to the inner side wall of the first sound outlet hole 1021 , and the first diaphragm 401 is clamped on the surface of the second transverse plate facing the first sound outlet hole 1021 superior.
  • a first accommodating space (not shown in the figure) for installing the first magnetic circuit system 60 is enclosed by the first diaphragm 401 and the cavity 3021 , and the second diaphragm 501 and the basin frame 20 are formed by the first accommodating space (not shown in the figure).
  • the basin frame 20 is provided with a groove 202.
  • the groove 202 is used to communicate the accommodating cavity 100a and the hollow inner hole 201.
  • the design of the groove 202 is beneficial to the interior of the accommodating cavity 100a and the hollow inner hole.
  • the air in the 201 (ie the second accommodating space) is circulated, so as to adjust the air pressure in the accommodating cavity 100a and the air pressure in the hollow inner hole 201 and accelerate the heat dissipation speed of the sound generating unit 200, thereby improving the acoustic performance of the speaker box 100.
  • a second through hole 3026 is formed on the first transverse plate 3024 or the annular longitudinal plate 3025, or a second through hole 3026 is formed in the part where the first transverse plate 3024 and the annular longitudinal plate 3025 are connected to each other.
  • 3026 is used to communicate the hollow inner hole 201 and the cavity 3021.
  • the design of the second through hole 3026 is conducive to the circulation of the air in the cavity 3021 (ie the first accommodation space) and the air in the hollow inner hole 201, so as to facilitate the adjustment of the cavity.
  • the air pressure in the cavity 3021 and the air pressure in the hollow inner hole 201 are also favorable for the air in the cavity 3021 (ie, the first accommodating space) to circulate with the air in the accommodating cavity 100a.
  • the groove 202 and the second through hole 3026 are designed so that the accommodating cavity 100a of the box 10, the hollow inner hole 201 and the cavity 3021 of the magnetic bowl 30 communicate with each other, which is beneficial to the accommodating cavity 100a, the first accommodating space, the The gas communication between the two accommodating spaces adjusts the air pressure of the accommodating cavity 100 a , the first accommodating space and the second accommodating space, thereby improving the acoustic performance of the speaker box 100 .
  • the basin frame 20 includes a hollow frame body 203, two first extension arms 204, and two second extension arms 205, wherein the two first extension arms 204 extend from the hollow frame body 203 toward the second transverse plate and It is connected with the second transverse plate, and the two first extension arms 204 are disposed opposite to each other, and the two second extension arms 205 extend from the hollow frame 203 toward the second transverse plate and are connected with the second transverse plate, and the two The two extending arms 205 are arranged opposite to each other, and the adjacent first extending arms 204 and the second extending arms 205 are enclosed to form the groove 202 .
  • the first transverse plate 3024 and/or the annular longitudinal plate 3025 are provided with four a second through hole 3026 .
  • the four grooves 202 thus formed connect the accommodating cavity 100a with the hollow inner hole 201, and the four second through holes 3026 connect the hollow inner hole 201 with the concave cavity 3021, which is more conducive to the rapid adjustment of the air pressure, so that it can be The acoustic performance of the speaker enclosure 100 is further improved.
  • first extension arms 204 and two second extension arms 205 it is not limited to two first extension arms 204 and two second extension arms 205, and other numbers are also possible, and the number of grooves 202 is not limited to one or four, but also two number, three or others, correspondingly, the number of the second through holes 3026 is not limited to one or four, and may also be two, three or others.
  • the first magnetic circuit system 60 includes a first main magnetic steel 602 , a first secondary magnetic steel 603 , a first main pole core 604 , and a first auxiliary pole core 605 ; the first main magnetic The steel 602 is stacked on the surface of the connecting magnetic part 80 facing the cavity 3021; the first auxiliary magnetic steel 603 is stacked on the surface of the first transverse plate 3024 located in the cavity 3021, and the first auxiliary magnetic steel 603 is spaced between the first and second magnetic steels 603.
  • the outer circumference of the main magnetic steel 602 is surrounded by the first main magnetic steel 602 to form a first magnetic gap 601; the first main pole core 604 is stacked on the surface of the first main magnetic steel 602 facing the first diaphragm 401; The secondary pole core 605 is stacked on the surface of the first secondary magnetic steel 603 facing the first diaphragm 401 .
  • the first secondary magnetic steel 603 is stacked on the first transverse plate 3024 avoiding the second through hole 3026; 6051 to facilitate gas circulation.
  • the first secondary magnets 603 include four, wherein two of the first secondary magnets 603 are respectively arranged at an opposite end of the first main magnet 602, and the other two first secondary magnets 603 are respectively arranged at The other opposite end of the first main magnetic steel 602 and the four first auxiliary magnetic steels 603 are stacked on the part of the first transverse plate 3024 avoiding the second through hole 3026 to facilitate gas circulation.
  • the number of the first auxiliary magnets 603 is not limited to four, and may also be other numbers, or the first auxiliary magnetic steel 603 has a hollow annular structure, when the first auxiliary magnetic steel 603 has In the case of the hollow annular structure, an air guide hole communicated with the second through hole 3026 is provided on it.
  • the first main magnetic steel 602 and the connecting magnetic part 80 are integrally formed.
  • the first main magnetic steel 602 and the magnetic connecting portion 80 are not limited to being integrally formed, and may also be connected together by welding, or may also be connected in other ways.
  • the first main magnetic steel 602 and the connecting magnetic part 80 are both made of magnetic materials, such as permanent magnets and the like.
  • the first magnetic circuit system 60 and the first vibration system 40 form a sound system
  • the first magnetic circuit system 60 drives the first vibration system 40 to generate sound
  • the generated sound is transmitted through the first sound outlet 1021 . Since the first magnetic circuit system 60 is disposed in the cavity 3021 , the space occupied by the first magnetic circuit system 60 in the speaker box 100 can be reduced, and the structural compactness of the speaker box 100 can be improved.
  • the second magnetic circuit system 70 includes a second main magnetic steel 702 , a second auxiliary magnetic steel 703 , a second main pole core 704 , and a second auxiliary pole core 705 ;
  • the two main magnets 702 are stacked on the surface of the connecting magnetic portion 80 that faces away from the cavity 3021 , and the second secondary magnets 703 are stacked on the connecting portion 301 (ie, the surface of the second transverse plate facing the second diaphragm 501 ) and connected to the second
  • the two main magnetic steels 702 are enclosed to form a second magnetic gap 701 ;
  • the second main pole core 704 is stacked on the surface of the second main magnetic steel 702 facing the second diaphragm 501 ;
  • the second auxiliary pole core 705 is stacked on the second auxiliary pole core 705
  • the magnetic steel 703 faces the surface of the second diaphragm 501 .
  • the second main magnetic steel 702 is provided with a first escape opening 7021, the second main magnetic steel 702 is stacked on the surface of the magnetic connecting portion 80 away from the cavity 3021, and is extended and stacked on the first transverse plate 3024 to avoid the The position of the two through holes 3026, and the first escape port 7021 and the second through hole 3026 communicate with each other to facilitate gas circulation;
  • the second main pole core 704 is provided with a second escape port 7041, the second escape port 7041 and the first escape port 7041 The openings 7021 are connected to facilitate gas circulation.
  • the second main pole core 704 is stacked on the surface of the second main magnetic steel 702 facing the second diaphragm 501, and avoids the first escape opening 7021, so that the second through hole 3026, the first An escape port 7021 and a second escape port 7041 communicate with each other to facilitate gas circulation.
  • the second secondary magnetic steel 703 includes four, wherein two second secondary magnetic steels 703 are respectively disposed at opposite ends of the second main magnetic steel 702 and connected to the connecting portion 301 (ie, the second transverse plate), The other two second secondary magnetic steels 703 are respectively disposed on the other opposite ends of the second main magnetic steel 702 and connected to the connecting portion 301 (ie, the second transverse plate).
  • the number of the second secondary magnetic steels 703 is not limited to four, and can also be other numbers, or the second secondary magnetic steel 703 has a hollow annular structure, when the second secondary magnetic steel 703 has In the case of the hollow annular structure, there are air guide holes connected with the second through holes 3026 to facilitate the flow of gas.
  • the second secondary pole core 705 is a piece, which has a hollow structure, is sleeved on the outer circumference of the second voice coil 502 and has a gap with the second voice coil 502. Meanwhile, the second secondary pole core 705 and the second secondary magnetic Steel 703 connections.
  • the second main magnetic steel 702 and the connecting magnetic part 80 are integrally formed.
  • the second main magnetic steel 702 and the magnetic connecting portion 80 are not limited to being integrally formed, and may also be connected together by welding, or may also be connected in other ways.
  • the second main magnetic steel 702 and the connecting magnetic part 80 are both made of magnetic materials, such as permanent magnets and the like.
  • the second magnetic circuit system 70 and the second vibration system 50 constitute another sound generation system.
  • the second magnetic circuit system 70 drives the second vibration system 50 to generate sound, and the generated sound is transmitted through the first sound outlet 1021 go out.
  • the second magnetic circuit system 70 is arranged outside the cavity 3021 and between the inner wall of the hollow inner hole 201 of the basin frame 20 , especially the second secondary magnetic steel 703 is arranged at the connecting portion 301 (and the second transverse plate faces the second diaphragm 501 ) surface), the space occupied by the second magnetic circuit system 70 in the speaker cabinet 100 can also be reduced, and the structural compactness of the speaker cabinet 100 can be improved.
  • the first main magnetic steel 602 , the connecting magnetic portion 80 and the second main magnetic steel 702 are integrally formed.
  • the first vibration system 40 further includes a first dome 403 .
  • the first dome 403 is stacked on the surface of the first diaphragm 401 facing the first magnetic circuit system 60 and is connected to the first voice coil.
  • the other end of 402 is connected, and the setting of the first spherical top 403 is beneficial to improve the acoustic performance of the first vibration system 40 .
  • the second vibration system 50 further includes a second spherical top 503.
  • the second spherical top 503 is stacked on the surface of the second diaphragm 501 facing the second magnetic circuit system 70, and is connected to the other end of the second voice coil 502.
  • the arrangement of the dome 503 is beneficial to improve the acoustic performance of the second vibration system 50 .
  • the mobile terminal 900 includes a terminal panel 901 and a speaker box 100 mounted on the terminal panel 901 .
  • the speaker box 100 is the above-mentioned speaker box 100
  • the second panel 102 on the speaker box 100 is attached and installed on the terminal panel 901
  • the terminal panel 901 is provided with a third sound outlet 901a
  • the third sound outlet 901a is connected to the terminal panel 901.
  • the first sound outlet hole 1021 is passed through.
  • the second diaphragm 501, the second panel 102 and the terminal panel 901 in the speaker box 100 are enclosed to form a second front acoustic cavity 100c.
  • the mobile terminal 900 further includes a sealing member 902 for sealing the terminal panel 901 and the second panel 102.
  • the sealing member 902 may be an annular sealing member, which is stacked on the terminal panel 901 and the second panel. 102 and surrounding the outer circumference of the first sound outlet 1021 .
  • the sealing member 902 is foam cotton.
  • the sealing member 902 is not limited to the foam cotton, and can also be other parts with sealing effect.
  • the speaker box 100 is the above-mentioned speaker box 100 , that is, the second panel 102 of the box body 10 of the speaker box 100 is provided with a first sound outlet 1021 through it.
  • the sound hole 1021 is used for receiving calls, and the enclosure plate 103 is provided with a second sound hole 1031, which is used for speaker, so that the mobile terminal 900 has the functions of speaking and receiving.
  • the first vibration system 40 and the first magnetic circuit system 60 of the speaker box 100 are arranged in the cavity 3021 of the magnetic bowl 30 having the cavity 3021 structure, while the second vibration system 50 and the second magnetic circuit system 70 are arranged in the magnetic cavity 3021 .
  • the sound generation system composed of the first vibration system 40 and the first magnetic circuit system 60 and the sound generation system composed of the second vibration system 50 and the second magnetic circuit system 70 are nested, which improves the speaker box.
  • 100 is compact in structure, the speaker box 100 occupies a relatively small space in the mobile terminal 900, so that the mobile terminal 900 can be miniaturized.
  • the second main magnets 702 are connected by the magnetic connecting part 80, so that the speaker box 100 has good magnetic performance, and finally shows good acoustic performance, and also enables the mobile terminal 900 to have good acoustic performance while being miniaturized .

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne un caisson de haut-parleur et un terminal mobile. Le caisson de haut-parleur comprend un corps de boîtier et une unité de production de son. Le corps de la boîte comprend un premier panneau, un second panneau ayant un second trou de sortie du son, et une plaque d'entourage ayant un premier trou de sortie du son. L'unité de production de son comprend un premier système de circuit magnétique, un second système de circuit magnétique, une partie de connexion magnétique, un premier système de vibration ayant une première membrane, un second système de vibration ayant une seconde membrane, un panier ayant un trou intérieur creux, et un bol magnétique ayant une partie de connexion et une partie d'encastrement. La partie d'encastrement comporte une cavité, la cavité comporte une ouverture de cavité faisant face au second trou de sortie de son, et le fond de la cavité est pourvu d'un premier trou traversant. Le premier système de circuit magnétique est disposé dans la cavité, le second système de circuit magnétique est disposé entre la paroi extérieure de la partie d'encastrement et la paroi latérale intérieure du trou intérieur creux, la partie de connexion magnétique passe à travers le premier trou traversant et connecte le premier système de circuit magnétique au second système de circuit magnétique, et la seconde membrane et le corps de boîte enferment une première cavité sonore avant en communication avec le second trou de sortie sonore. Le caisson de haut-parleur de la présente invention est de structure compacte, possède des fonctions de haut-parleur et de récepteur, et présente de bonnes performances magnétiques et acoustiques.
PCT/CN2020/120987 2020-09-25 2020-10-14 Caisson de haut-parleur et terminal mobile WO2022061983A1 (fr)

Applications Claiming Priority (2)

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CN202022148905.7U CN213342568U (zh) 2020-09-25 2020-09-25 扬声器箱及移动终端
CN202022148905.7 2020-09-25

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WO2022061983A1 true WO2022061983A1 (fr) 2022-03-31

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WO2023185412A1 (fr) * 2022-04-02 2023-10-05 歌尔股份有限公司 Module de production de son et dispositif électronique

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Publication number Priority date Publication date Assignee Title
CN114449422B (zh) * 2022-01-30 2024-02-09 歌尔科技有限公司 扬声器和电子设备
CN114866913A (zh) * 2022-04-02 2022-08-05 歌尔股份有限公司 发声模组和终端设备
CN114866910A (zh) * 2022-04-02 2022-08-05 歌尔股份有限公司 发声器件、发声模组以及电子设备
CN117915247B (zh) * 2024-03-20 2024-05-14 瑞声光电科技(常州)有限公司 扬声器

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US20120163644A1 (en) * 2010-12-26 2012-06-28 Chao Xu Speaker and method for fabricating same
CN103369431A (zh) * 2013-07-18 2013-10-23 瑞声光电科技(常州)有限公司 发声系统
CN204836570U (zh) * 2015-07-01 2015-12-02 深圳精拓创新科技有限公司 一种双振膜结构的扬声器
CN209861151U (zh) * 2019-05-20 2019-12-27 瑞声科技（南京）有限公司 扬声器
CN111343549A (zh) * 2020-03-05 2020-06-26 瑞声科技(新加坡)有限公司 扬声器箱

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Publication number Priority date Publication date Assignee Title
US20120163644A1 (en) * 2010-12-26 2012-06-28 Chao Xu Speaker and method for fabricating same
CN103369431A (zh) * 2013-07-18 2013-10-23 瑞声光电科技(常州)有限公司 发声系统
CN204836570U (zh) * 2015-07-01 2015-12-02 深圳精拓创新科技有限公司 一种双振膜结构的扬声器
CN209861151U (zh) * 2019-05-20 2019-12-27 瑞声科技（南京）有限公司 扬声器
CN111343549A (zh) * 2020-03-05 2020-06-26 瑞声科技(新加坡)有限公司 扬声器箱

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023185412A1 (fr) * 2022-04-02 2023-10-05 歌尔股份有限公司 Module de production de son et dispositif électronique

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