CN106101952A - Mini-sound device and manufacture method thereof - Google Patents
Mini-sound device and manufacture method thereof Download PDFInfo
- Publication number
- CN106101952A CN106101952A CN201610564266.8A CN201610564266A CN106101952A CN 106101952 A CN106101952 A CN 106101952A CN 201610564266 A CN201610564266 A CN 201610564266A CN 106101952 A CN106101952 A CN 106101952A
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- Prior art keywords
- voice coil
- vibrating diaphragm
- coil loudspeaker
- loudspeaker voice
- mini
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Classifications
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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
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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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 present invention provides a kind of mini-sound device and manufacture method thereof, it includes vibrational system and fixed system, described vibrational system includes sound film, is positioned at below described sound film and drives the voice coil loudspeaker voice coil of described sound film vibration sounding and be arranged at the vibrating diaphragm flexibly supporting described voice coil loudspeaker voice coil below described voice coil loudspeaker voice coil, one end of described vibrating diaphragm is fixed with described fixed system, the other end is connected with described voice coil loudspeaker voice coil, described fixed system includes the frame with receiving space and the magnetic circuit system driving described vibrational system to vibrate, and the position that described vibrating diaphragm is connected with described voice coil loudspeaker voice coil is provided with the breach of outwards depression.The present invention ensure that the concentricity of voice coil loudspeaker voice coil and frame by arranging breach on vibrating diaphragm.
Description
[technical field]
The present invention relates to a kind of mini-sound device and manufacture method thereof, particularly relate to mini-sound device positions voice coil loudspeaker voice coil
Structure, and location voice coil loudspeaker voice coil method.
[background technology]
For adapting to various stereo sets and the miniaturization of information communication device, multifunction development, it is desirable in this kind equipment
The mini-sound device correspondence used more tends to miniaturization, makes coordinating of described mini-sound device and other elements of periphery
Compacter.Especially as the demand of the lightening development of mobile phone, the quality of the mini-sound device used in it is wanted
Ask more and more higher.
Sound film in the mini-sound device structure of prior art is single-tone film, and the voice coil loudspeaker voice coil in mini-sound device does not has
Fixing, voice coil loudspeaker voice coil produces inside mini-sound device and waves, and easily occurs vibrating unbalanced phenomenon, thus causes minitype acoustic generator
Part pure tone is bad, in the technology improved, can increase underlying vibrating diaphragm to support described voice coil loudspeaker voice coil, is used for improving waving of product and asks
Topic, so, the difficult point of novel product is the assembly problem of underlying vibrating diaphragm.
Therefore, it is necessary to provide a kind of new mini-sound device to solve above-mentioned technical problem.
[summary of the invention]
It is an object of the invention to provide a kind of mini-sound device ensureing voice coil loudspeaker voice coil and frame concentricity.
For achieving the above object, the present invention can adopt the following technical scheme that a kind of mini-sound device, and it includes vibration system
System and fixed system, described vibrational system includes sound film, is positioned at below described sound film the voice coil loudspeaker voice coil driving described sound film vibration sounding
And it is arranged at the vibrating diaphragm flexibly supporting described voice coil loudspeaker voice coil below described voice coil loudspeaker voice coil, one end of described vibrating diaphragm is fixed with described fixed system,
The other end is connected with described voice coil loudspeaker voice coil, and described fixed system includes the frame with receiving space and drives described vibrational system to vibrate
Magnetic circuit system, the position that described vibrating diaphragm is connected with described voice coil loudspeaker voice coil is provided with the breach of outwards depression.
Preferably, described voice coil loudspeaker voice coil includes short a pair axle limit and a pair major axis limit, and described vibrating diaphragm is a pair, the two of described voice coil loudspeaker voice coil
Individual short axle limit respectively arranges a described vibrating diaphragm, and described vibrating diaphragm is equipped with described breach.
Preferably, one end of described vibrating diaphragm is fixed with described frame.
Preferably, described vibrating diaphragm includes first fixed part fixing with described frame and fixing second solid of described voice coil loudspeaker voice coil
Determine portion and connect described first fixed part and the depressed part of the second fixed part, described breach be arranged at described vibrating diaphragm second fix
In portion.
Preferably, described magnetic circuit system includes main magnet steel and is arranged at the secondary magnet steel on described voice coil loudspeaker voice coil major axis limit, described main magnetic
Forming magnetic gap between steel and described secondary magnet steel, described voice coil loudspeaker voice coil is suspended in described magnetic gap.
Compared with the mini-sound device of correlation technique, the invention have the advantages that mini-sound device of the present invention
Voice coil loudspeaker voice coil can ensure that the concentricity with frame.
A further object of the present invention is that providing a kind of can guarantee that voice coil loudspeaker voice coil and the system of frame concentricity in mini-sound device
Make method.
For achieving the above object, the present invention can adopt the following technical scheme that the manufacture method of a kind of mini-sound device, should
Method comprises the following steps that
S1, providing carrier, it is described fixed that described carrier includes that positioning tool module, described positioning tool module include being arranged at
The projection of position frock modular peripheral;
S2, offer vibrating diaphragm, be positioned over vibrating diaphragm in described carrier, and the edge that described vibrating diaphragm is provided with from described vibrating diaphragm is outside
The breach of depression, described breach is relative with the projection in described positioning tool module;
S3, providing and have the frame of receiving space, fixed with described frame one end of described vibrating diaphragm, described frame includes
Upper surface and the lower surface relative with described upper surface;
S4, offer voice coil loudspeaker voice coil, described voice coil loudspeaker voice coil is positioned in the receiving space of described frame by described positioning tool module, institute
The projection stated in positioning tool module abuts with described voice coil loudspeaker voice coil, and described voice coil loudspeaker voice coil is positioned at the top of described vibrating diaphragm, by described vibrating diaphragm
The other end is connected with described voice coil loudspeaker voice coil, and described vibrating diaphragm flexibly supports described voice coil loudspeaker voice coil;
S5, offer sound film, be fixed on the upper surface of described frame by described sound film;
S6, removal carrier, it is provided that magnetic circuit system, described magnetic circuit system be installed on described vibrating diaphragm lower section and with described frame
Fixing.
Preferably, described voice coil loudspeaker voice coil includes short a pair axle limit and a pair major axis limit, and described vibrating diaphragm is arranged at the short of described voice coil loudspeaker voice coil
Axle limit, the projection in described positioning tool module includes the first projection that the short axle limit with described voice coil loudspeaker voice coil abuts and described voice coil loudspeaker voice coil
The second projection that major axis limit abuts, described first projection is relative with the breach of described vibrating diaphragm.
Preferably, the size of described breach is more than or equal to the size of the first projection in described positioning tool module.
Preferably, described vibrating diaphragm includes first fixed part fixing with described frame and fixing second solid of described voice coil loudspeaker voice coil
Determine portion and connect described first fixed part and the depressed part of the second fixed part, described breach be arranged at described vibrating diaphragm second fix
In portion.
Preferably, described magnetic circuit system includes magnet steel and houses the magnetic bowl of described magnet steel.
Compared with the manufacture method of the mini-sound device of correlation technique, the invention have the advantages that the present invention is led to
Cross and breach is set on vibrating diaphragm dodges positioning tool module so that more than vibrating diaphragm, film excessive will not exceed voice coil loudspeaker voice coil, so that voice coil loudspeaker voice coil
Can guarantee that the concentricity with frame.
[accompanying drawing explanation]
Fig. 1 is the axonometric chart of mini-sound device of the present invention;
Fig. 2 is the decomposed figure of mini-sound device as shown in Figure 1;
Fig. 3 is the exploded view of mini-sound device as shown in Figure 1;
Fig. 4 is the part-structure schematic diagram during mini-sound device assembling shown in the present invention;
Fig. 5 is the magnified partial view of Fig. 4;
Fig. 6 is the axonometric chart of the vibrating diaphragm of mini-sound device as shown in Figure 1.
[detailed description of the invention]
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all other
Embodiment, broadly falls into the scope of protection of the invention.
If Fig. 1 is to as indicated at 3, described mini-sound device 100 includes fixed system 200 and vibrational system 300.Described solid
Determine system 200 to include having the frame 1 of receiving space, be contained in the described interior magnetic circuit system driving described vibrational system 300 of frame 1
System 2 and the clamping plate 3 being embedded in frame 1, metalwork 4.Described vibrational system 300 includes sound film 5, is positioned at below described sound film 5 and drives
Move the voice coil loudspeaker voice coil 7 of described sound film 5 vibration sounding, be arranged at the vibrating diaphragm 8 flexibly supporting described voice coil loudspeaker voice coil 7 below described voice coil loudspeaker voice coil 7.
Described frame 1 is the overall rectangle in hollow, and described frame 1 includes two major axis sidewalls 11 and two short axle sidewalls
12, described two major axis sidewalls 11 connect with two short axle sidewalls 12, and the two ends of described major axis sidewall 11 are provided with baffle plate 13, described
Baffle plate 13 and described major axis sidewall 11 form the first resettlement section 14, and the described short axle sidewall 11 of described frame 1 is provided with the second receipts
Appearance portion 15.Described frame includes upper surface 16 and the lower surface relative with described upper surface 16.
Described magnetic circuit system 2 includes magnetic bowl 21, the magnet steel 22 being arranged in described magnetic bowl 21 and is covered in described magnet steel 22
On pole piece 23.Described magnet steel 22 includes main magnet steel 221 and is arranged at the secondary magnet steel 222 of described main magnet steel 221 both sides, described master
The magnetic gap formed between magnet steel 221 and described secondary magnet steel 222, described voice coil loudspeaker voice coil 7 is suspended in described magnetic gap, two described pairs
Magnet steel 222 is contained in the first resettlement section 14 of described frame 1, and the both sides of described clamping plate 3 are covered on described secondary magnet steel 222.
Described magnetic bowl 21 includes a base plate 211 and two side plates 212 extended from described base plate 211, and described side plate 212 is contained in described
Second resettlement section 15 of frame 1.Described pole piece 23 is tabular, and is stacked on described main magnet steel 221.
Described metalwork 4 is embedded at the end angle of described frame 1, and described metalwork 4 includes being positioned at described frame 1 upper surface
First connecting portion 41 of 16, it is positioned at the second connecting portion 42 of described frame 1 lower surface and connects described first docking section 41 and institute
Stating the connecting portion 43 of the second docking section 42, described first docking section 41 electrically connects with described voice coil loudspeaker voice coil 7, described second docking section 42 with
External circuit connects.
Described sound film 5 includes ring 51, is positioned at the top dome 52 in the middle of ring 51 and outward extending solid from described ring 51
Determining portion 53, described ring 51 can be integral type with described top dome 52, it is also possible to is split type.Described sound film 5 respectively with
Described voice coil loudspeaker voice coil 7 and described frame 1 connect.
Described voice coil loudspeaker voice coil 7 inserts in described magnetic gap, its generally rectangle structure.Described voice coil loudspeaker voice coil 7 includes a pair major axis limit
71 and short a pair axle limit 72, described voice coil loudspeaker voice coil 7 is located between described sound film 5 and described vibrating diaphragm 8, and described voice coil loudspeaker voice coil 7 includes to extension
The voice coil leads 73 stretched, described voice coil leads 73 is welded and fixed with described metalwork 4.
As shown in Figure 6, described vibrating diaphragm 8 is arranged at the short axle limit 72 of described voice coil loudspeaker voice coil 7 and flexibly supports described voice coil loudspeaker voice coil 7.Described
One end of vibrating diaphragm 8 is fixed with described fixed system 200, and the other end is connected with described voice coil loudspeaker voice coil 4, in the present embodiment, and described vibrating diaphragm 8
One end fix with described frame 1, in other embodiments, described vibrating diaphragm 8 also can with in magnet steel 22 or other fixed systems 200
Parts fix.Described vibrating diaphragm 8 includes solid with the first fixing fixed part 81 of described frame 1 and described voice coil loudspeaker voice coil 7 fixing second
Determine portion 82 and connect described first fixed part 81 and the depressed part 83 of the second fixed part 82, the second fixed part 82 of described vibrating diaphragm 8
The position being connected with described voice coil loudspeaker voice coil 7 is provided with the breach 84 of outwards depression, and described breach 84 makes the remaining film at vibrating diaphragm 8 edge will not
Spilling exceedes voice coil loudspeaker voice coil, and meanwhile, when positioning voice coil loudspeaker voice coil 7, described breach 84 can be stepped down positioning tool module 400, to ensure voice coil loudspeaker voice coil 7
Concentricity with frame 1.Described vibrating diaphragm 8 is a pair, and two short axle limits 72 of described voice coil loudspeaker voice coil 7 respectively arrange a described vibrating diaphragm 8, one
Described vibrating diaphragm 8 is symmetrical arranged, and structure is identical.
The present invention also provides for a kind of method manufacturing described mini-sound device 100, sees also Fig. 1 to Fig. 5, the party
Method comprises the following steps that
S1, offer carrier, described carrier includes that positioning tool module 400, described positioning tool module 400 include being arranged at
The projection 401 of described positioning tool module 400 periphery, described projection 401 includes the first projection 402 and the second projection 403, described
First projection 402 is unrestricted with the quantity of described second projection 403, can be set according to actual needs;
S2, offer vibrating diaphragm 8, be positioned over vibrating diaphragm 8 in described carrier, and described vibrating diaphragm 8 is provided with the edge from described vibrating diaphragm 8
The outwards breach 84 of depression, described breach 84 is relative with the first projection 402 in described positioning tool module 400, described breach
The size of 84 is more than or equal to the size of the first projection 402 in described positioning tool module 400, and the quantity of described breach 84 is with described
The quantity of the first projection 402 is consistent;
S3, providing and have the frame 1 of receiving space, described frame 1 has been embedded in clamping plate 3 and metalwork 4, by described vibrating diaphragm
One end of 8 is fixed with described frame 1, and described frame 1 includes upper surface 16 and the lower surface relative with described upper surface;
S4, offer voice coil loudspeaker voice coil 7, the collecting that described voice coil loudspeaker voice coil 7 is positioned described frame 1 by described positioning tool module 400 is empty
In, the projection 401 in described positioning tool module 400 abuts with described voice coil loudspeaker voice coil 7, concrete, described first projection 402 and institute
The short axle limit 72 stating voice coil loudspeaker voice coil 7 abuts, and described second projection 403 abuts with the major axis limit 71 of described voice coil loudspeaker voice coil 7, and described voice coil loudspeaker voice coil 7 is positioned at
The top of described vibrating diaphragm 8, is connected the other end of described vibrating diaphragm 8 with described voice coil loudspeaker voice coil 7, and described vibrating diaphragm 8 flexibly supports described voice coil loudspeaker voice coil
7, the first docking section 41 of the metalwork 4 at the voice coil leads 73 of described voice coil loudspeaker voice coil 7 and described frame 1 upper surface 16 is welded and fixed;
S5, offer sound film 5, fix the ring 51 of sound film 5 with top dome 52, then fixed by the fixed part 53 of described sound film 5
Upper surface 16 in described frame 1;
S6, removal carrier, it is provided that magnetic circuit system 2, described magnetic circuit system 2 is installed on the lower section of described vibrating diaphragm 8 and with described
Frame 1 is fixed, concrete, it is provided that magnet steel 22, magnetic bowl 21 and pole piece 23, and pole piece 23 is connected to the table of described main magnet steel 221
Face, described main magnet steel 221 is fixed in described magnetic bowl 21 by glue respectively with secondary magnet steel 222, then by magnetic bowl 21 together with magnet steel 22,
Pole piece 23 is installed in frame 1 together, and described magnetic bowl 21 is fixed also by glue with described frame.
So far, being just completed of whole mini-sound device 100 as shown in Figure 1, this assembling sequence is not unique, this
Invention only lists one of which assembling sequence.
The mini-sound device 100 of the present invention during fabrication, by arranging breach 84 on vibrating diaphragm 8 so that voice coil loudspeaker voice coil 7 is fixed
During position, vibrating diaphragm 8 can effectively dodge positioning tool module 400 so that the remaining film of vibrating diaphragm 8 excessive will not exceed voice coil loudspeaker voice coil 7, thus protects
Demonstrate,prove the concentricity of voice coil loudspeaker voice coil 7 and frame 1.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make improvement, but these belong to the protection model of the present invention
Enclose.
Claims (10)
1. a mini-sound device, it include vibrational system and fixed system, described vibrational system include sound film, be positioned at described
Drive the voice coil loudspeaker voice coil of described sound film vibration sounding below sound film and be arranged at the vibrating diaphragm flexibly supporting described voice coil loudspeaker voice coil below described voice coil loudspeaker voice coil,
One end of described vibrating diaphragm is fixed with described fixed system, and the other end is connected with described voice coil loudspeaker voice coil, and described fixed system includes having receipts
The frame holding space and the magnetic circuit system driving described vibrational system to vibrate, it is characterised in that described vibrating diaphragm is with described voice coil loudspeaker voice coil even
The position connect is provided with the breach of outwards depression.
2. mini-sound device as claimed in claim 1, it is characterised in that described voice coil loudspeaker voice coil includes short a pair axle limit and a pair length
Axle limit, described vibrating diaphragm is a pair, and two short axle limits of described voice coil loudspeaker voice coil respectively arrange a described vibrating diaphragm, and described vibrating diaphragm is all provided with
State breach.
3. mini-sound device as claimed in claim 1, it is characterised in that one end of described vibrating diaphragm is fixed with described frame.
4. mini-sound device as claimed in claim 3, it is characterised in that described vibrating diaphragm includes fixing with described frame the
The second fixed part that one fixed part and described voice coil loudspeaker voice coil are fixing and be connected described first fixed part and the depressed part of the second fixed part,
Described breach is arranged on the second fixed part of described vibrating diaphragm.
5. mini-sound device as claimed in claim 1, it is characterised in that described magnetic circuit system includes main magnet steel and is arranged at
The secondary magnet steel on described voice coil loudspeaker voice coil major axis limit, forms magnetic gap between described main magnet steel and described secondary magnet steel, and described voice coil loudspeaker voice coil is suspended in institute
State in magnetic gap.
6. the manufacture method of a mini-sound device, it is characterised in that: the method comprises the following steps that
S1, offer carrier, described carrier includes that positioning tool module, described positioning tool module include being arranged at described location work
The projection of dress modular peripheral;
S2, offer vibrating diaphragm, be positioned over vibrating diaphragm in described carrier, and the edge that described vibrating diaphragm is provided with from described vibrating diaphragm outwards caves in
Breach, described breach is relative with the projection in described positioning tool module;
S3, providing and have the frame of receiving space, fixed with described frame one end of described vibrating diaphragm, described frame includes table
Face and the lower surface relative with described upper surface;
S4, offer voice coil loudspeaker voice coil, described voice coil loudspeaker voice coil is positioned in the receiving space of described frame by described positioning tool module, described fixed
Projection in the frock module of position abuts with described voice coil loudspeaker voice coil, and described voice coil loudspeaker voice coil is positioned at the top of described vibrating diaphragm, by another of described vibrating diaphragm
End is connected with described voice coil loudspeaker voice coil, and described vibrating diaphragm flexibly supports described voice coil loudspeaker voice coil;
S5, offer sound film, be fixed on the upper surface of described frame by described sound film;
S6, removal carrier, it is provided that magnetic circuit system, described magnetic circuit system is installed on the lower section of described vibrating diaphragm and consolidates with described frame
Fixed.
7. the manufacture method of mini-sound device as claimed in claim 6, it is characterised in that described voice coil loudspeaker voice coil includes short a pair axle
Limit and a pair major axis limit, described vibrating diaphragm is arranged at the short axle limit of described voice coil loudspeaker voice coil, the projection in described positioning tool module include with
The first projection that the short axle limit of described voice coil loudspeaker voice coil abuts and the second projection that the major axis limit of described voice coil loudspeaker voice coil abuts, described first projection with
The breach of described vibrating diaphragm is relative.
8. the manufacture method of mini-sound device as claimed in claim 7, it is characterised in that the size of described breach is more than
The size of the first projection in described positioning tool module.
9. the manufacture method of mini-sound device as claimed in claim 6, it is characterised in that described vibrating diaphragm includes and described basin
The second fixed part that fixing the first fixed part of frame is fixing with described voice coil loudspeaker voice coil and be connected described first fixed part and the second fixed part
Depressed part, described breach is arranged on the second fixed part of described vibrating diaphragm.
10. the manufacture method of mini-sound device as claimed in claim 6, it is characterised in that described magnetic circuit system includes magnetic
Steel and house the magnetic bowl of described magnet steel.
Priority Applications (1)
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CN201610564266.8A CN106101952B (en) | 2016-07-18 | 2016-07-18 | Mini-sound device and its manufacturing method |
Applications Claiming Priority (1)
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CN201610564266.8A CN106101952B (en) | 2016-07-18 | 2016-07-18 | Mini-sound device and its manufacturing method |
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CN106101952A true CN106101952A (en) | 2016-11-09 |
CN106101952B CN106101952B (en) | 2019-07-05 |
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CN201610564266.8A Expired - Fee Related CN106101952B (en) | 2016-07-18 | 2016-07-18 | Mini-sound device and its manufacturing method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109275073A (en) * | 2018-08-09 | 2019-01-25 | 瑞声科技(新加坡)有限公司 | The assembly method and loudspeaker of loudspeaker |
Citations (3)
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---|---|---|---|---|
CN101808261A (en) * | 2010-04-14 | 2010-08-18 | 东莞泉声电子有限公司 | Sound film structure of moving-coil electroacoustic device and manufacturing method thereof |
CN102711021A (en) * | 2012-01-06 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Miniature sounding device |
CN102711024A (en) * | 2012-01-06 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Vibration system |
-
2016
- 2016-07-18 CN CN201610564266.8A patent/CN106101952B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101808261A (en) * | 2010-04-14 | 2010-08-18 | 东莞泉声电子有限公司 | Sound film structure of moving-coil electroacoustic device and manufacturing method thereof |
CN102711021A (en) * | 2012-01-06 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Miniature sounding device |
CN102711024A (en) * | 2012-01-06 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Vibration system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109275073A (en) * | 2018-08-09 | 2019-01-25 | 瑞声科技(新加坡)有限公司 | The assembly method and loudspeaker of loudspeaker |
CN109275073B (en) * | 2018-08-09 | 2021-02-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker and assembling method thereof |
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