CN111629307A - Loudspeaker - Google Patents

Loudspeaker Download PDF

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Publication number
CN111629307A
CN111629307A CN202010431889.4A CN202010431889A CN111629307A CN 111629307 A CN111629307 A CN 111629307A CN 202010431889 A CN202010431889 A CN 202010431889A CN 111629307 A CN111629307 A CN 111629307A
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CN
China
Prior art keywords
loudspeaker
magnetic
magnetic steel
main
diaphragm
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN202010431889.4A
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Chinese (zh)
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CN111629307B (en
Inventor
肖波
令狐荣林
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Publication date
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Priority to CN202010431889.4A priority Critical patent/CN111629307B/en
Priority to PCT/CN2020/092756 priority patent/WO2021232461A1/en
Publication of CN111629307A publication Critical patent/CN111629307A/en
Application granted granted Critical
Publication of CN111629307B publication Critical patent/CN111629307B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04R9/022—Cooling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

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

Abstract

The invention relates to the field of electroacoustic conversion, and provides a loudspeaker which comprises a lower cover, an upper cover and a loudspeaker single body, wherein the upper cover is assembled with the lower cover to form an accommodating cavity, the loudspeaker single body is accommodated in the accommodating cavity, the loudspeaker single body comprises a vibration system and two magnetic circuit systems which are oppositely arranged at intervals and used for driving the vibration system to vibrate, each magnetic circuit system comprises a main magnetic steel component and an auxiliary magnetic steel component which is arranged at intervals with the main magnetic steel component to form a magnetic gap, and each vibration system comprises an upper vibration diaphragm, two voice coils which are respectively arranged in the corresponding magnetic gaps, and a framework which is combined on one side of the upper vibration diaphragm and used for connecting the upper vibration diaphragm and the voice coils. Through the mode, a larger magnetic circuit electromagnetic conversion factor BL can be provided for the loudspeaker product, and meanwhile, the double-magnetic circuit system increases the heat dissipation area and is favorable for heat dissipation of the loudspeaker product during working.

Description

Loudspeaker
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker.
[ background of the invention ]
The magnetic circuit system in the existing loudspeaker is generally a single magnetic circuit system, and the arrangement mode makes the loudspeaker difficult to provide a larger magnetic circuit electromagnetic conversion factor BL and is also not beneficial to heat dissipation of a product during working.
Therefore, there is a need to provide a new magnetic circuit system to solve at least one of the above problems.
[ summary of the invention ]
The present invention is directed to a speaker, which employs two magnetic circuit systems disposed at an interval, and can solve the above problems.
The technical scheme of the invention is as follows: the utility model provides a loudspeaker, including the lower cover, with the lower cover assembly forms the upper cover of acceping the chamber and accept in accept the speaker monomer of intracavity, the speaker monomer includes vibration system and is used for the drive two magnetic circuit that the relative interval of vibration system vibration set up, magnetic circuit include main magnet steel component and with main magnet steel component interval sets up the vice magnetic steel component that forms the magnetic gap, vibration system is including being located two last vibrating diaphragm, two between the magnetic circuit locate respectively correspond voice coil loudspeaker voice coil in the magnetic gap and combine in go up vibrating diaphragm one side and be used for connecting go up the vibrating diaphragm with the skeleton of voice coil loudspeaker voice coil.
Preferably, the upper cover is provided with two first assembling ports, and the magnetic circuit system further comprises an upper magnetic yoke clamped between the main magnetic steel assembly and the upper cover.
Preferably, the upper magnetic yoke comprises a first top wall fixedly connected with the upper cover and a first side wall bent and extended from the edge of the first top wall to the direction of the auxiliary magnetic steel assembly, and a step portion matched with the corresponding first assembling hole is arranged on the first top wall.
Preferably, the magnetic circuit system further includes a lower magnetic yoke disposed opposite to the upper magnetic yoke at an interval, the main magnetic steel assembly and the auxiliary magnetic steel assembly are disposed on the lower magnetic yoke, the main magnetic steel assembly includes a first main magnetic steel disposed on the lower magnetic yoke, a main pole core attached to the first main magnetic steel, and a second main magnetic steel attached to the main pole core, and the second main magnetic steel abuts against the first top wall.
Preferably, the bobbin includes a main body portion located between the two magnetic circuit systems, two first engaging portions disposed at an interval and coupled to the corresponding voice coil, and two second engaging portions respectively connecting the corresponding first engaging portions to the main body portion.
Preferably, the auxiliary magnetic steel component is provided with a yielding gap for the second joint to move back and forth along the vibration direction of the vibration system.
Preferably, the speaker further includes a lower diaphragm for suppressing the voice coil from swinging and supporting the bobbin.
Preferably, the lower cover includes a bottom wall, an outer wall extending from an edge of the bottom wall to the upper cover in a bending manner, and an inner wall extending from the bottom wall to the upper cover in a bending manner, short sides of the inner wall and short sides of the outer wall are arranged at intervals to form two first receiving spaces at intervals, and the two magnetic circuit systems are respectively received in the corresponding first receiving spaces.
Preferably, at least part of the outer edge of the upper diaphragm is clamped between the upper cover and the lower cover, and the outer edge of the lower diaphragm is fixedly arranged on the inner wall.
Preferably, a first spherical cap is sandwiched between the inner edge of the upper vibrating diaphragm and the main body portion, and a second spherical cap is sandwiched between the inner edge of the lower vibrating diaphragm and the main body portion of the framework.
Preferably, the main body part of the framework is formed by continuously bending a base body, and sequentially comprises a first bending part, a second bending part and a third bending part, the second bending part encloses a hollow inner cavity, the first spherical top clamp is arranged between the first bending part and the inner edge of the upper vibrating diaphragm, and the second spherical top clamp is arranged between the third bending part and the inner edge of the lower vibrating diaphragm.
Preferably, a plurality of first through holes are formed in the second bending part.
Preferably, a part of the upper outer edge of the upper diaphragm is clamped between the upper magnetic yoke and the auxiliary magnetic steel assembly.
The invention has the beneficial effects that: the loudspeaker comprises a vibration system and two magnetic circuit systems which are oppositely arranged at intervals and used for driving the vibration system to vibrate, wherein each magnetic circuit system comprises a main magnetic steel component and an auxiliary magnetic steel component which is arranged at intervals with the main magnetic steel component to form a magnetic gap, and each vibration system comprises an upper vibrating diaphragm positioned between the two magnetic circuit systems, two voice coils which are respectively arranged in the corresponding magnetic gaps, and a framework which is combined on one side of the upper vibrating diaphragm and is used for connecting the upper vibrating diaphragm and the voice coils. Through the arrangement mode, a larger magnetic circuit electromagnetic conversion factor BL can be provided for the loudspeaker product, and meanwhile, the double magnetic circuit system increases the heat dissipation area and is favorable for heat dissipation of the loudspeaker product during working.
[ description of the drawings ]
Fig. 1 is a schematic overall structure diagram of a speaker according to an embodiment of the present invention;
FIG. 2 is an exploded view of a speaker according to an embodiment of the present invention;
fig. 3 is an exploded view of a magnetic structure according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along the line A-A in FIG. 1;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 1;
reference numerals: a speaker 100; a lower cover 1; a bottom wall 11; an outer wall 12; an inner wall 13; a first housing space 14; a second through hole 15; a second fitting opening 16; an upper cover 2; a second top wall 21; a second side wall 22; the first fitting port 23; a sound outlet 24; an accommodating cavity 3; a vibration system 4; a voice coil 41; a skeleton 42; a main body 421; a first kink portion 421 a; a second kink portion 421 b; a third kink portion 421 c; the first via 421 d; a first engaging portion 422; the second engaging portion 423; a first dome 43; an upper diaphragm 44; a first boss portion 441; a first fixing portion 442; a second fixing portion 443; a second ball top 45; a lower diaphragm 46; the second boss 461; the third fixing portion 462; a fourth fixing portion 463; a magnetic circuit system 5; a magnetic gap 50; a lower yoke 51; a main magnet steel assembly 52; a first main magnetic steel 521; a main pole piece 522; a second main magnetic steel 523; a secondary magnetic steel assembly 53; a first secondary magnetic steel unit 531; a first auxiliary magnetic steel 531 a; a first auxiliary pole piece 531 b; a second auxiliary magnetic steel 531 c; a second secondary magnetic steel unit 532; a third secondary magnetic steel 532 a; a second sub-pole core 532 b; a fourth secondary magnetic steel 532 c; an abduction gap 533; an upper yoke 54; a first top wall 541; a first sidewall 542; a step portion 543.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 5, an embodiment of the present invention provides a speaker 100, which includes a lower cover 1, an upper cover 2 assembled with the lower cover 1 to form an accommodating cavity 3, and a speaker unit accommodated in the accommodating cavity 3, where the speaker unit includes a vibration system 4 and two magnetic circuit systems 5 arranged at an interval and opposite to each other for driving the vibration system 4 to vibrate. Specifically, the magnetic circuit system 5 includes a main magnetic steel component 52 and a secondary magnetic steel component 53 spaced apart from the main magnetic steel component 52 to form a magnetic gap 50. The vibration system 4 includes an upper diaphragm 44, two voice coils 41 respectively disposed in the corresponding magnetic gaps 50, and a frame 42 coupled to one side of the upper diaphragm 44 and used for connecting the upper diaphragm 44 and the voice coils 41. Two magnetic circuits 5 generate magnetic fields to drive the corresponding voice coil 41 to vibrate along the vibration direction (the Z direction shown in fig. 4-5) of the vibration system 4, and the voice coil 41 drives the bobbin 42 to vibrate along the vibration direction of the vibration system 4 when vibrating, so as to drive the upper diaphragm 44 to vibrate and generate sound.
According to the invention, through the arrangement mode, the loudspeaker 100 is provided with the double magnetic circuit system 5 and the voice coils 41 respectively arranged in the magnetic circuit system 5, the two voice coils 41 are connected in series or in parallel, a larger magnetic circuit electromagnetic conversion factor BL can be provided for the loudspeaker 100, and meanwhile, the double magnetic circuit system 5 increases the heat dissipation area and is also beneficial to heat dissipation of the loudspeaker 100 during operation. In addition, the magnetic circuit system 5 and the voice coil 41 in the present invention can be made into standard parts, and can be adjusted freely according to the size of the speaker, so as to achieve flexible combination of customization and standardization.
Specifically, the magnetic circuit system 5 further includes an upper magnetic yoke 54 interposed between the main magnetic steel assembly 52 and the upper cover 2, and a lower magnetic yoke 51 disposed opposite to the upper magnetic yoke 54 at an interval, the lower magnetic yoke 51 is fixed on the lower cover 1, and the main magnetic steel assembly 52 and the auxiliary magnetic steel assembly 53 are disposed on the lower magnetic yoke 51.
Further, the upper yoke 54 includes a first top wall 541 fixedly connected to the upper cover 2, and a first side wall 542 bent and extending from an edge of the first top wall 541 toward the auxiliary magnetic steel assembly 53. Two first assembling ports 23 are formed in the upper cover 2, and a step portion 543 which is matched with the corresponding first assembling port 23 is formed in the first top wall 541 of the upper magnetic yoke 54.
Optionally, in this embodiment, the main magnetic steel assembly 52 includes a first main magnetic steel 521 disposed on the lower yoke 51, a main pole core 522 attached to the first main magnetic steel 521, and a second main magnetic steel 523 attached to the main pole core 522. The second main magnetic steel 523 abuts against the first top wall 541. The first main magnetic steel 521 and the second main magnetic steel 523 are permanent magnets and are used for providing uniform magnetic fields. The main pole core 522 is magnetic conductive for the first main magnetic steel 521 and the second main magnetic steel 523, so as to reduce outflow of magnetic lines of force. It should be noted that, in other embodiments of the present invention, the main magnetic steel assembly 52 is composed of only one main magnetic steel, or only two main magnetic steels, or a main magnetic steel and a pole core. It is understood that other configurations of the main magnet assembly 52 are within the scope of the present invention.
Specifically, the bobbin 42 includes a main body 421, two first engaging portions 422 disposed at an interval and connected to the corresponding voice coil 41, and two second engaging portions 423 respectively connected to the corresponding first engaging portions 422 to the main body 421. The first joints 422 are annular structures, and the voice coil 41 is attached to the corresponding first joints 422, so as to be suspended in the corresponding magnetic gaps 50. The auxiliary magnetic steel component 53 is provided with a yielding gap 533 for the second joint part 423 to move back and forth along the vibration direction of the vibration system 4.
Optionally, in this embodiment, the secondary magnetic steel assembly 53 includes two first secondary magnetic steel units 531 symmetrically disposed along the short side direction of the primary magnetic steel assembly 52, and two second secondary magnetic steel units 532 symmetrically disposed along the long side direction of the primary magnetic steel assembly 52. The first sub magnetic steel unit 531 near the main body 421 passes through the second joint 423 and forms the abdicating gap 533 with the second joint 423 at an interval, so that the second joint 423 can reciprocate in the abdicating gap 533 along the vibration direction of the vibration system 4. First vice magnet steel unit 531 with the vice magnet steel unit 532 of second is used for adjusting magnetic field distribution, makes the magnetic field intensity of each position department on voice coil 41 is unanimous relatively, improves the tone quality of speaker. Further, first auxiliary magnetic steel unit 531 includes first auxiliary magnetic steel 531a disposed on lower yoke 51, first auxiliary pole core 531b disposed on first auxiliary magnetic steel 531a, and second auxiliary magnetic steel 531c disposed on first auxiliary pole core 531 b. The second auxiliary magnetic steel unit 532 is including locating third auxiliary magnetic steel 532a, subsides on the lower yoke 51 are located second auxiliary magnetic steel 532b and the subsides that third auxiliary magnetic steel 532a set up are located the fourth auxiliary magnetic steel 532c that second auxiliary magnetic steel 532b set up. It should be noted that the structure of the secondary magnetic steel component 53 is not limited to the manner shown in the present embodiment, and any secondary magnetic steel component that can be used to adjust the magnetic field distribution and is provided with a corresponding abdication gap should fall within the protection scope of the present invention.
Further, the main body 421 is formed by continuously bending a substrate, and sequentially includes a first bending portion 421a, a second bending portion 421b, and a third bending portion 421c, where the second bending portion 421b encloses a hollow cavity. Optionally, the first kink portion 421a is perpendicular to the second kink portion 421b, and the second kink portion 421b is perpendicular to the third kink portion 421 c.
Optionally, a plurality of first through holes 421d are formed in the second bending portion 421b to communicate the rear cavity of the speaker 100.
Specifically, the lower cover 1 includes a bottom wall 11, an outer wall 12 extending from the edge of the bottom wall 11 to the upper cover 2 in a bending manner, and an inner wall 13 extending from the middle of the bottom wall 11 to the upper cover 2 in a bending manner. Wherein, the projection of one end (i.e. the top end) of the inner wall 13 far away from the bottom wall 11 along the direction perpendicular to the outer wall 12 is located on the outer wall 12, i.e. the height of the inner wall 13 is lower than the height of the outer wall 12. The long side of the inner wall 13 (in the X direction shown in fig. 4) is attached to the long side of the outer wall 12 (in the X direction shown in fig. 4), and optionally, the long side of the inner wall 13 and the long side of the outer wall 12 are integrally formed (as shown in fig. 5). The short sides (Y direction as shown in fig. 5) of the inner wall 13 and the short sides (Y direction as shown in fig. 5) of the outer wall 12 are arranged at intervals to form two first receiving spaces 14, and the magnetic circuit systems 5 are respectively received in the corresponding first receiving spaces 14.
Specifically, the speaker 100 further includes a lower diaphragm 46 for supporting the frame 42. The lower diaphragm 46 is of an annular structure, so that the voice coil 41 can be better inhibited from swinging, and the advantage of the loudspeaker in the application of the ultra-large amplitude loudspeaker is more obvious. The outer edge of the lower diaphragm 46 is fixed on the inner wall 13, and a second dome 45 is interposed between the inner edge of the lower diaphragm 46 and the main body 421 of the skeleton 42. Optionally, the second dome 45 has a ring structure.
Optionally, the lower diaphragm 46 includes a second protrusion portion 461, a third fixing portion 462 surrounding the outer periphery of the second protrusion portion 461, and a fourth fixing portion 463 surrounding the inner periphery of the second protrusion portion 461. The second protruding portion 461 protrudes in a direction away from the upper cover 2 and is accommodated in an accommodating space defined by the inner wall 13 and the bottom wall 11. The lower surface of the third fixing portion 462 is fixed to the top end of the inner wall 13, and the second dome 45 is interposed between the fourth fixing portion 463 and the third bending portion 421 c.
Specifically, the upper diaphragm 44 is in an annular structure, and at least a part of an outer edge of the upper diaphragm 44 is sandwiched between the upper cover 2 and the lower cover 1, and a part of an edge is sandwiched between the upper yoke 54 and the secondary magnet steel assembly 53. For example, in this embodiment, the outer edge of the upper diaphragm 44 arranged along the long side direction of the speaker 100 is fixedly arranged on the outer wall 12, and the outer edge of the upper diaphragm 44 arranged along the short side direction of the speaker 100 is sandwiched between the upper yoke 54 and the first sub magnetic steel unit 531 close to the main body 421. A first dome 43 is interposed between the inner edge of the upper diaphragm 44 and the main body 421. Alternatively, the first dome 43 has a flat plate shape.
Specifically, the upper cover 2 includes a second top wall 21 and a second side wall 22 bent and extended from an edge of the second top wall 21 toward the lower cover 1, and the first assembling opening 23 is disposed on the second top wall 21.
Optionally, the upper diaphragm 44 includes a first protruding portion 441, a first fixing portion 442 disposed around the outer circumference of the first protruding portion 441, and a second fixing portion 443 disposed around the inner circumference of the first protruding portion 441. The first protruding portion 441 protrudes in a direction away from the lower cover 1 and is accommodated in an accommodating space defined by the second top wall 21 and the second side wall 22, at least a part of the first fixing portion 442 is fixed on the outer wall 12, and the second dome 43 is sandwiched between the second fixing portion 443 and the first bending portion 421 a.
Specifically, a front cavity is defined by a surface of the upper diaphragm 44 facing one side of the upper cover 2, a surface of the first dome 43 facing one side of the upper cover 2, and a first side wall 542 of the upper yoke 54 and the upper cover 2, a sound outlet 24 is provided on the second side wall 22, and the front cavity is communicated with the outside through the sound outlet 24.
Optionally, a second through hole 15 for heat dissipation is provided on the outer wall 12 of the lower cover 1. The bottom wall 11 of the lower cover 1 is provided with at least one second assembling hole 16 for matching and connecting with the lower magnetic yoke 51.
The loudspeaker 100 provided by the invention is provided with the double magnetic circuit system and the voice coils respectively arranged in the magnetic circuit system, the two voice coils are connected in series or in parallel, a larger magnetic circuit electromagnetic conversion factor BL can be provided for the loudspeaker 100, and meanwhile, the double magnetic circuit system increases the heat dissipation area and is also beneficial to heat dissipation of the loudspeaker 100 during working. In addition, the magnetic circuit system and the voice coil can be made into standard parts and can be adjusted at will according to the size of the loudspeaker, so that flexible combination of customization and standardization is realized.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (13)

1. The utility model provides a loudspeaker, its characterized in that, including the lower cover, with the lower cover group closes to form and accepts the upper cover in chamber and accept in accept the speaker monomer in the chamber, the speaker monomer includes vibration system and is used for the drive two magnetic circuit that the relative interval of vibration system vibration set up, magnetic circuit include main magnet steel component and with main magnet steel component interval sets up the vice magnet steel component that forms the magnetic gap, vibration system is including being located two last vibrating diaphragm between the magnetic circuit, two locate respectively corresponding voice coil loudspeaker voice coil in the magnetic gap and combine in last vibrating diaphragm one side is used for connecting go up the vibrating diaphragm with the skeleton of voice coil loudspeaker voice coil.
2. The loudspeaker of claim 1, wherein the upper cover is provided with two first assembling ports, and the magnetic circuit system further comprises an upper yoke interposed between the main magnetic steel assembly and the upper cover.
3. The loudspeaker of claim 2, wherein the upper magnetic yoke comprises a first top wall fixedly connected with the upper cover, and a first side wall bent and extended from the edge of the first top wall to the direction of the auxiliary magnetic steel assembly, and a step part matched with the corresponding first assembling hole is arranged on the first top wall.
4. The loudspeaker of claim 3, wherein the magnetic circuit system further comprises a lower yoke spaced opposite to the upper yoke, the main magnetic steel assembly and the auxiliary magnetic steel assembly are disposed on the lower yoke, the main magnetic steel assembly comprises a first main magnetic steel disposed on the lower yoke, a main pole core attached to the first main magnetic steel, and a second main magnetic steel attached to the main pole core, and the second main magnetic steel abuts against the first top wall.
5. The speaker of claim 1, wherein the bobbin includes a main body portion between the two magnetic circuit systems, two first engaging portions spaced apart from each other and engaged with the corresponding voice coil, and two second engaging portions each connecting the corresponding first engaging portion to the main body portion.
6. The loudspeaker of claim 5, wherein the secondary magnetic steel component is provided with a clearance for the second joint to move back and forth along the vibration direction of the vibration system.
7. The speaker of claim 5, further comprising a lower diaphragm for suppressing the voice coil from rocking and supporting the bobbin.
8. The speaker of claim 7, wherein the bottom cover includes a bottom wall, an outer wall bent and extended from an edge of the bottom wall toward the top cover, and an inner wall bent and extended from the bottom wall toward the top cover, short sides of the inner wall and the short sides of the outer wall are disposed at an interval to form two first receiving spaces, and the two magnetic circuit systems are respectively received in the corresponding first receiving spaces.
9. The loudspeaker of claim 8, wherein at least a portion of an outer edge of the upper diaphragm is sandwiched between the upper cover and the lower cover, and an outer edge of the lower diaphragm is fixed to the inner wall.
10. The loudspeaker of claim 9, wherein a first dome is interposed between the inner edge of the upper diaphragm and the main body portion, and a second dome is interposed between the inner edge of the lower diaphragm and the main body portion of the frame.
11. The speaker of claim 10, wherein the main body portion of the frame is formed by continuously bending a base body, and sequentially includes a first bending portion, a second bending portion, and a third bending portion, the second bending portion encloses a hollow cavity, the first dome is sandwiched between the first bending portion and the inner edge of the upper diaphragm, and the second dome is sandwiched between the third bending portion and the inner edge of the lower diaphragm.
12. The speaker of claim 11, wherein the second bending portion has a plurality of first through holes.
13. The loudspeaker of claim 2, wherein a portion of the upper outer edge of the upper diaphragm is sandwiched between the upper yoke and the secondary magnet assembly.
CN202010431889.4A 2020-05-20 2020-05-20 Loudspeaker Expired - Fee Related CN111629307B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010431889.4A CN111629307B (en) 2020-05-20 2020-05-20 Loudspeaker
PCT/CN2020/092756 WO2021232461A1 (en) 2020-05-20 2020-05-28 Loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010431889.4A CN111629307B (en) 2020-05-20 2020-05-20 Loudspeaker

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CN111629307A true CN111629307A (en) 2020-09-04
CN111629307B CN111629307B (en) 2021-09-28

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WO (1) WO2021232461A1 (en)

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CN207926906U (en) * 2017-11-29 2018-09-28 歌尔智能科技有限公司 A kind of loud speaker
US20190342669A1 (en) * 2018-05-04 2019-11-07 Tymphany Acoustic Technology (Huizhou) Co., Ltd. Symmetrical dual-edge loudspeaker
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Publication number Priority date Publication date Assignee Title
CN114900777A (en) * 2022-05-10 2022-08-12 东莞市余泰电子有限公司 Flat horn
CN115396762A (en) * 2022-08-26 2022-11-25 歌尔股份有限公司 Sound production module and electronic equipment

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