CN109769183A - Loudspeaker - Google Patents

Loudspeaker Download PDF

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Publication number
CN109769183A
CN109769183A CN201910178877.2A CN201910178877A CN109769183A CN 109769183 A CN109769183 A CN 109769183A CN 201910178877 A CN201910178877 A CN 201910178877A CN 109769183 A CN109769183 A CN 109769183A
Authority
CN
China
Prior art keywords
voice coil
vibrating diaphragm
fixed
auxiliary
loudspeaker
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
CN201910178877.2A
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Chinese (zh)
Other versions
CN109769183B (en
Inventor
李军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
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Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to CN201910178877.2A priority Critical patent/CN109769183B/en
Publication of CN109769183A publication Critical patent/CN109769183A/en
Application granted granted Critical
Publication of CN109769183B publication Critical patent/CN109769183B/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers

Abstract

The present invention discloses a kind of loudspeaker, including shell, the vibrational system being contained in the shell and magnetic circuit system, the vibrational system includes vibrating diaphragm group and the voice coil group for driving the vibrating diaphragm group vibration, the vibrating diaphragm group includes main vibrating diaphragm and auxiliary vibrating diaphragm, the voice coil group includes the first voice coil and the second voice coil, first voice coil is arranged between the main vibrating diaphragm and the auxiliary vibrating diaphragm, and the side that the auxiliary vibrating diaphragm deviates from the main vibrating diaphragm is arranged in second voice coil.Loudspeaker of the present invention includes the first voice coil and the second voice coil, it is equivalent to and disassembles single-tone coil structures for double-tone coil structures, and assist vibrating diaphragm that the lower end of the second voice coil is then no longer set, but auxiliary vibrating diaphragm is arranged between the first voice coil and the second voice coil, so that the installation site of auxiliary vibrating diaphragm increases, the oscillation space of auxiliary vibrating diaphragm is increased, meets the needs of auxiliary vibrating diaphragm large-amplitude vibration.

Description

Loudspeaker
Technical field
The present invention relates to acoustical device technical field, in particular to a kind of loudspeaker.
Background technique
With the development of mobile phone technique, requirements at the higher level are mentioned to loudspeaker, product is more and more thinner, and amplitude is increasing, vibration Dynamic space is smaller and smaller.When product amplitude is larger, vibrational system polarization problem can aggravate, at present in industry using main vibrating diaphragm and The double diaphragm system of vibrating diaphragm is assisted to inhibit to polarize, still, traditional double diaphragm system generally uses single-tone coil structures, main vibrating diaphragm It is affixed on the upper end of voice coil, and the lower end for assisting vibrating diaphragm to be affixed on voice coil causes to assist vibrating diaphragm by sky since the height of single-tone circle is higher Between limit larger, assist the ring height of vibrating diaphragm smaller, be unable to satisfy large-amplitude vibration demand, and in order to avoid auxiliary vibrating diaphragm Ring portion pats frame when vibrating downwards, needs to increase groove structure in the upper surface of frame and is avoided, increase technique at It is this while, the position in the ring portion of auxiliary vibrating diaphragm corresponding in frame is ironed, it will cause the reduction of BL value, sensitivity declines, no Conducive to the promotion of properties of product.
Summary of the invention
The main object of the present invention is to propose a kind of loudspeaker, it is intended to solve loudspeaker in the prior art and be unable to satisfy auxiliary The problem of demand of vibrating diaphragm large-amplitude vibration.
To achieve the above object, the present invention proposes a kind of loudspeaker, including shell, the vibration system being contained in the shell System and magnetic circuit system, the vibrational system include vibrating diaphragm group and the voice coil group for driving the vibrating diaphragm group vibration, the vibrating diaphragm group packet Main vibrating diaphragm and auxiliary vibrating diaphragm are included, the voice coil group includes the first voice coil and the second voice coil, and first voice coil is arranged in the master Between vibrating diaphragm and the auxiliary vibrating diaphragm, the side that the auxiliary vibrating diaphragm deviates from the main vibrating diaphragm is arranged in second voice coil.
Preferably, the auxiliary vibrating diaphragm includes the first horizontal portion set gradually from inside to outside, the first ring portion and first Fixed part, the first horizontal portion are fixed between the first voice coil and the second voice coil, and first fixed part is fixed on described outer On shell.
Preferably, the main vibrating diaphragm includes the central portion set gradually from inside to outside, the second ring portion and the second fixed part, Second fixed part is fixed on the housing, and one end of first voice coil towards the main vibrating diaphragm is attached at the center The one end in portion, first voice coil towards the auxiliary vibrating diaphragm is attached at the first horizontal portion, and second voice coil is towards institute The one end for stating auxiliary vibrating diaphragm is attached at the first horizontal portion.
Preferably, first ring portion is protruded along the direction away from first voice coil, and second ring portion is along back From or towards first voice coil direction protrusion.
Preferably, the vibrational system further includes centring disk, and the centring disk is set to first voice coil and institute It states between auxiliary vibrating diaphragm, the centring disk includes matrix and the conducting channel that is set on matrix, and the one of the conducting channel End is electrically connected with first voice coil and second voice coil, and the other end of the conducting channel is electrically connected with external circuit.
Preferably, first voice coil and the second voice coil are connected in series by the conducting channel.
Preferably, the centring disk include branch piece horizontal part, branch piece fixed part and the connection branch piece horizontal part and The interconnecting piece of branch piece fixed part, the branch piece fixed part is fixed on the housing, and the branch piece horizontal part is fixed on described the Between one voice coil and the auxiliary vibrating diaphragm.
Preferably, the quantity of the auxiliary vibrating diaphragm and the quantity of the centring disk are two, two auxiliary vibrations Film and two centring disks correspond arrangement.
Preferably, first voice coil is formed by the first voice coil line winding;Second voice coil is by the second voice coil line winding It forms, the line footpath of first voice coil line and the line footpath of the first voice coil line are different.
Preferably, the magnetic circuit system include the frame fixed with the shell, the centring magnet being mounted in frame with And it is distributed in the side magnet on the outside of centring magnet, and form magnetic gap between the centring magnet and the side magnet, described first Voice coil and second voice coil are suspended in the magnetic gap.
In technical solution of the present invention, loudspeaker includes the first voice coil and the second voice coil, is equivalent to and tears single-tone coil structures open Solution is double-tone coil structures, and assists vibrating diaphragm that the lower end of the second voice coil is then no longer arranged in, but auxiliary vibrating diaphragm is arranged first Between voice coil and the second voice coil, so that the installation site of auxiliary vibrating diaphragm increases, the oscillation space of auxiliary vibrating diaphragm is increased, is met auxiliary Help the demand of vibrating diaphragm large-amplitude vibration.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the decomposition diagram of one embodiment of the invention loudspeaker;
Fig. 2 is the schematic cross-section of one embodiment of the invention loudspeaker;
Fig. 3 is the schematic cross-section of vibrational system and frame in one embodiment of the invention loudspeaker;
Fig. 4 is the structural schematic diagram of centring disk in one embodiment of the invention loudspeaker;
Fig. 5 is the assembling schematic diagram of centring disk and the first voice coil and the second voice coil in one embodiment of the invention loudspeaker.
Drawing reference numeral explanation:
Label Title Label Title
100 Loudspeaker 2511 Branch piece horizontal part
10 Shell 2512 Interconnecting piece
20 Vibrational system 2513 Branch piece fixed part
21 Main vibrating diaphragm 252 First pad
211 Central portion 253 Second pad
212 Second ring portion 254 Third pad
213 Second fixed part 255 4th pad
22 Assist vibrating diaphragm 26 Reinforcement part
221 First horizontal portion 30 Magnetic circuit system
222 First ring portion 31 Frame
223 First fixed part 32 Centring magnet
23 First voice coil 33 Side magnet
24 Second voice coil 34 Center washer
25 Centring disk 40 Front cover
251 Matrix 401 Acoustic aperture out
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention, Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship, Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of loudspeaker.
As shown in Figure 1 to Figure 3, in the present embodiment, loudspeaker 100 includes shell 10, vibrational system 20 and magnetic circuit system 30, Vibrational system 20 and magnetic circuit system 30 are contained in shell 10.Wherein, vibrational system 20 includes vibrating diaphragm group and driving vibrating diaphragm group vibration Dynamic voice coil group, vibrating diaphragm group include main vibrating diaphragm 21 and auxiliary vibrating diaphragm 22, and voice coil group includes the first voice coil 23 and the second voice coil 24, the For the setting of one voice coil 23 between main vibrating diaphragm 21 and auxiliary vibrating diaphragm 22, the setting of the second voice coil 24 deviates from main vibrating diaphragm 21 in auxiliary vibrating diaphragm 22 Side.
Specifically, as shown in Figures 2 and 3, the main vibrating diaphragm 21 of the present embodiment, the first voice coil 23, auxiliary vibrating diaphragm 22 and the Two voice coils 24 are from top to bottom sequentially arranged, and the upper end of the first voice coil 23 is attached to the lower surface of main vibrating diaphragm 21, under the first voice coil 23 End is attached to the upper surface of auxiliary vibrating diaphragm 22, and the upper end of the second voice coil 24 is then attached to the lower surface of auxiliary vibrating diaphragm 22.The present embodiment is raised Sound device 100 includes the first voice coil 23 and the second voice coil 24, is equivalent to and disassemble single-tone coil structures for double-tone coil structures, and auxiliary is shaken The lower end of the second voice coil 24 is then no longer arranged in film 22, but auxiliary vibrating diaphragm 22 is arranged in the first voice coil 23 and the second voice coil 24 Between, so that the installation site of auxiliary vibrating diaphragm 22 increases, the oscillation space of auxiliary vibrating diaphragm 22 is increased, it is big to meet auxiliary vibrating diaphragm 22 The demand of amplitude vibration.
The auxiliary vibrating diaphragm 22 of the present embodiment includes the first horizontal portion 221 set gradually from inside to outside, the first ring portion 222 With the first fixed part 223, wherein first horizontal portion 221 is fixed between the first voice coil 23 and the second voice coil 24, the first fixed part 223 are fixed on shell 10, and the two sides of vibrating diaphragm 22 will be assisted to fix, and are conducive to the first ring portion 222 and vibrate.With single-tone coil structures Loudspeaker 100 compare, the present embodiment loudspeaker 100 due to auxiliary vibrating diaphragm 22 installation site increase, to the first ring portion 222 Oscillation space limitation it is smaller, that is, the first ring portion 222 have enough oscillation spaces, it is possible to increase the height in the first ring portion 222 Degree, conducive to the acoustical behavior for improving loudspeaker 100.
The main vibrating diaphragm 21 of the present embodiment includes the central portion 211 set gradually from inside to outside, the second ring portion 212 and second Fixed part 213, the second fixed part 213 are fixed on shell 10, and one end of the first voice coil 23 towards main vibrating diaphragm 21 is attached at center Portion 211, one end of the first voice coil 23 towards auxiliary vibrating diaphragm 22 are attached at first horizontal portion 221, and the second voice coil 24 shakes towards auxiliary One end of film 22 is attached at first horizontal portion 221.
Specifically, the central portion 211 of main vibrating diaphragm 21 covers the upper end for being located at the first voice coil 23, and the lower end of the first voice coil 23 is attached to The upper surface of the first horizontal portion 221 of vibrating diaphragm 22 is assisted, the upper end of the second voice coil 24 is attached to the lower surface of auxiliary vibrating diaphragm 22, so that Voice coil group drives the vibration of vibrating diaphragm group, that is, the first voice coil 23 and the second voice coil 24 drive main vibrating diaphragm 21 and auxiliary mould group simultaneously jointly Vibration, it is reasonable in design.
In the present embodiment, the edge in the first ring portion 222 is protruded away from the direction of the first voice coil 23,212 edge of the second ring portion Facing away or facing towards the direction protrusion of the first voice coil 23, that is, the arc convex side in the first ring portion 222 is arranged upward, the second ring The arc convex side in portion 212 is arranged downward or is arranged upward.First ring portion 222 and the second ring portion 212 can be formed symmetrically Support can provide symmetrical restoring force in the vibration of voice coil group, reduce the distortion of product, improve reliability.
In the present embodiment, vibrational system 20 further includes centring disk 25, and centring disk 25 is set to the first voice coil 23 and auxiliary It helps between vibrating diaphragm 22, centring disk 25 includes matrix 251 and the conducting channel (not shown) being set on matrix 251, conductive electricity The one end on road is electrically connected with the first voice coil 23 and the second voice coil 24, and the other end of conducting channel is electrically connected with external circuit, specifically The other end on ground, conducting channel can be electrically connected with terminal, such as mobile phone, and the first voice coil 23 and the second voice coil 24 is made to be powered.It is fixed The setting of heart branch piece 25, plays positioning action, it can be ensured that the first voice coil 23 and the second voice coil 24 move reciprocatingly along axial direction, inhibit Polarization problem occurs for the first voice coil 23 and the second voice coil 24.In addition, centring disk 25 is set to the first voice coil 23 and auxiliary vibrating diaphragm It between 22, can guarantee the oscillation space of auxiliary vibrating diaphragm 22 while inhibiting polarization problem, meet auxiliary 22 large amplitude of vibrating diaphragm vibration It is dynamic to require.
In the present embodiment, the first voice coil 23 and the second voice coil 24 are connected in series by conducting channel, are conducive to the first voice coil 23 It is synchronous with the second voice coil 24 to move up and down, guarantee the synchronism that main vibrating diaphragm 21 and auxiliary vibrating diaphragm 22 vibrate.
Specifically, the matrix 251 of the present embodiment includes branch piece horizontal part 2511, branch piece fixed part 2513 and connection branch piece The interconnecting piece 2512 of horizontal part 2511 and branch piece fixed part 2513, branch piece fixed part 2513 are fixed on shell 10, and branch piece is horizontal Portion 2511 is fixed between the first voice coil 23 and auxiliary vibrating diaphragm 22, and the two sides of centring disk 25 are fixed, and centring disk 25 has It is flexible, it can be moved with voice coil group and vibrating diaphragm group axially reciprocating, it is reasonable in design, it is simple and convenient.
In the present embodiment, the quantity of the quantity and centring disk 25 that assist vibrating diaphragm 22 is two, two auxiliary vibrating diaphragms 22 Arrangement is corresponded with two centring disks 25.Two auxiliary vibrating diaphragms 22 are symmetrically arranged, the synchronous vibration of two auxiliary vibrating diaphragms 22 It is dynamic, the balance of 100 sounding of loudspeaker is kept, two centring disks 25 are also symmetrically arranged, and two qualitative branch pieces and two A auxiliary vibrating diaphragm 22 corresponds arrangement, further suppresses the polarization problem of the first voice coil 23 and the second voice coil 24.
Specifically, as shown in Figure 4 and Figure 5, the conducting channel of each centring disk 25 includes two pads, one of centering Two pads of branch piece 25 are respectively the first pad 252, the second pad 253, two pads difference of another centring disk 25 For third pad 254 and the 4th pad 255, wherein the first pad 252 and the conducting of the second pad 253, third pad 254 and the Four pads 255 are not turned on.In order to realize that the first voice coil 23 and the second voice coil 24 are connected in series, the first voice coil 23 and the second voice coil 24 Electric current it is consistent, in one embodiment so that third pad 254 is connected with the initial line of the first voice coil 23, the first pad 252 and The last line of one voice coil 23 is connected, and the second pad 253 is connected with the initial line of the second voice coil 24, the 4th pad 255 and the second voice coil 24 Last line conducting;In another embodiment, so that third pad 254 is connected with the initial line of the second voice coil 24, the first pad 252 with It is connected with the last line of the second voice coil 24, the second pad 253 is connected with the initial line of the first voice coil 23, the 4th pad 255 and the first sound The last line conducting of circle 23;In another embodiment, so that third pad 254 is connected with the initial line of the first voice coil 23, the second pad 253 are connected with the last line of the first voice coil 23, and the first pad 252 is connected with the initial line of the second voice coil 24, the 4th pad 255 and first The last line of voice coil 23 is connected;In other embodiments, other connection types can also be used, need to guarantee the first voice coil 23 and second Voice coil 24 is connected in series, and the first voice coil 23 is consistent with the electric current of the second voice coil 24.
First voice coil 23 of the present embodiment is formed by the 23 line winding of the first voice coil;Second voice coil 24 by 24 line of the second voice coil around If forming, the line footpath of 23 line of the first voice coil and the line footpath difference of 23 line of the first voice coil are, it can be achieved that the first voice coil 23 and the second voice coil 24 height, resistance value and weight are freely arranged in pairs or groups, and different requirements is met.
As shown in Figure 1 to Figure 3, in the present embodiment, magnetic circuit system 30 includes the frame 31 fixed with shell 10, is mounted on basin Centring magnet 32 on frame 31 and the side magnet 33 for being distributed in 32 outside of centring magnet, centring magnet 32 and become shape between magnet At magnetic gap, the first voice coil 23 and the second voice coil 24 are suspended in magnetic gap.The magnetic gap of magnetic circuit system 30 generates magnetic field, the One voice coil 23 and the second voice coil 24 do the movement of the reciprocating cutting magnetic line of force in magnetic gap, and main vibrating diaphragm 21 and auxiliary vibrating diaphragm 22 is driven to shake It is dynamic, to instigate air sounding, complete the energy conversion between electroacoustic.In order to correct the magnetic force of the sending of centring magnet 32, this reality Applying a magnetic circuit system 30 further includes the center washer 34 on centrally disposed magnet 32.
In addition, being not required to since the first ring portion 222 of auxiliary vibrating diaphragm 22 has enough oscillation spaces in the upper of frame 31 Surface increases groove structure, that is, the position in the first ring portion 222 of corresponding auxiliary vibrating diaphragm 22 will not be ironed in frame 31, mentions Sensitivity is risen, properties of product are improved.
The vibrational system 20 of the present embodiment loudspeaker 100 further includes reinforcement part 26, and the upper end of the first voice coil 23 is arranged in, and is adjusted Save the acoustical behavior of loudspeaker 100.The loudspeaker 100 of the present embodiment further includes front cover 40, and front cover 40 is cooperatively formed with shell 10 Protect-ing frame structure, front cover 40, which is provided with, goes out acoustic aperture 401 for sound outgoing.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all in the present invention Inventive concept under, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/be used in it indirectly He is included in scope of patent protection of the invention relevant technical field.

Claims (10)

1. a kind of loudspeaker, including shell, the vibrational system being contained in the shell and magnetic circuit system, which is characterized in that institute Stating vibrational system includes vibrating diaphragm group and the voice coil group for driving the vibrating diaphragm group vibration, and the vibrating diaphragm group includes main vibrating diaphragm and auxiliary vibration Film, the voice coil group include the first voice coil and the second voice coil, and the first voice coil setting is shaken in the main vibrating diaphragm and the auxiliary Between film, the side that the auxiliary vibrating diaphragm deviates from the main vibrating diaphragm is arranged in second voice coil.
2. loudspeaker as described in claim 1, which is characterized in that the auxiliary vibrating diaphragm includes the set gradually from inside to outside One horizontal part, the first ring portion and the first fixed part, the first horizontal portion are fixed between the first voice coil and the second voice coil, institute It is fixed on the housing to state the first fixed part.
3. loudspeaker as claimed in claim 2, which is characterized in that the main vibrating diaphragm includes the center set gradually from inside to outside Portion, the second ring portion and the second fixed part, second fixed part is fixed on the housing, and first voice coil is described in One end of main vibrating diaphragm is attached at the central portion, and one end of first voice coil towards the auxiliary vibrating diaphragm is attached at described first One end of horizontal part, second voice coil towards the auxiliary vibrating diaphragm is attached at the first horizontal portion.
4. loudspeaker as claimed in claim 3, which is characterized in that first ring portion is along the side for deviating from first voice coil To protrusion, second ring portion is protruded along the direction facing away or facing towards first voice coil.
5. loudspeaker as described in claim 1, which is characterized in that the vibrational system further includes centring disk, the centering Branch piece is set between first voice coil and the auxiliary vibrating diaphragm, and the centring disk includes matrix and is set on matrix Conducting channel, one end of the conducting channel are electrically connected with first voice coil and second voice coil, the conducting channel The other end is electrically connected with external circuit.
6. loudspeaker as claimed in claim 5, which is characterized in that first voice coil and the second voice coil pass through the conductive electricity Road is connected in series.
7. loudspeaker as claimed in claim 5, which is characterized in that described matrix include branch piece horizontal part, branch piece fixed part with And the interconnecting piece of connection the branch piece horizontal part and branch piece fixed part, the branch piece fixed part is fixed on the housing, described Branch piece horizontal part is fixed between first voice coil and the auxiliary vibrating diaphragm.
8. loudspeaker as claimed in claim 5, which is characterized in that the quantity of the auxiliary vibrating diaphragm and the number of the centring disk Amount is two, and two auxiliary vibrating diaphragms and two centring disks correspond arrangement.
9. such as loudspeaker of any of claims 1-8, which is characterized in that first voice coil by the first voice coil line around If forming;Second voice coil is formed by the second voice coil line winding, the line footpath of first voice coil line and the line of the first voice coil line Diameter is different.
10. such as loudspeaker of any of claims 1-8, which is characterized in that the magnetic circuit system include with it is described outer Shell fixed frame, the centring magnet being mounted in frame and the side magnet being distributed on the outside of centring magnet, the center magnetic Magnetic gap is formed between iron and the side magnet, first voice coil and second voice coil are suspended in the magnetic gap.
CN201910178877.2A 2019-03-08 2019-03-08 Loudspeaker Active CN109769183B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910178877.2A CN109769183B (en) 2019-03-08 2019-03-08 Loudspeaker
PCT/CN2019/129716 WO2020181887A1 (en) 2019-03-08 2019-12-30 Loudspeaker

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CN109769183A true CN109769183A (en) 2019-05-17
CN109769183B CN109769183B (en) 2020-11-13

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WO (1) WO2020181887A1 (en)

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CN207869371U (en) * 2018-01-27 2018-09-14 瑞声科技(新加坡)有限公司 Loud speaker
CN208638655U (en) * 2018-08-04 2019-03-22 瑞声科技(新加坡)有限公司 Loudspeaker mould group

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WO2020181887A1 (en) * 2019-03-08 2020-09-17 歌尔股份有限公司 Loudspeaker
WO2021127926A1 (en) * 2019-12-23 2021-07-01 瑞声声学科技(深圳)有限公司 Loudspeaker
CN111641907A (en) * 2020-06-24 2020-09-08 瑞声科技(新加坡)有限公司 Sound production device
CN111935613A (en) * 2020-10-13 2020-11-13 歌尔股份有限公司 Loudspeaker

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