CN208863072U - A kind of acoustical generator - Google Patents
A kind of acoustical generator Download PDFInfo
- Publication number
- CN208863072U CN208863072U CN201821548390.6U CN201821548390U CN208863072U CN 208863072 U CN208863072 U CN 208863072U CN 201821548390 U CN201821548390 U CN 201821548390U CN 208863072 U CN208863072 U CN 208863072U
- Authority
- CN
- China
- Prior art keywords
- welding
- acoustical generator
- welding disk
- voice coil
- metallic conduction
- 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.)
- Active
Links
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model provides a kind of acoustical generator, including the shell with accommodating chamber, vibrational system is contained in the shell, the vibrational system includes the vibrating diaphragm and voice coil combined, the acoustical generator further comprises metallic conduction part, and the metallic conduction part includes neighbouring vibrating diaphragm and is exposed to the welding disk outside shell, and the top surface of the welding disk includes welding surface and the non-solder face with difference in height, wherein, the welding surface is used to form is electrically connected with the voice coil.By forming the welding surface with difference in height and non-solder face in the welding disk top surface of metallic conduction part, it is generated when being fixed on shell so as to avoid non-solder face by injection mold and rushes tin phenomenon, so that brush plating material will not be flushed to the surface of acoustical generator perhaps inside avoids influence to acoustical generator appearance or acoustical behavior etc. when being molded fixed metallic conduction part.
Description
Technical field
The utility model relates to acoustic-electric switch technology fields.More particularly, to a kind of acoustical generator.
Background technique
Acoustical generator is a kind of device that can convert electrical energy into sound energy, belongs to most basic phonation unit, answers extensively
For in the terminal devices such as mobile phone.Common acoustical generator generally comprises shell, contains vibrational system and magnetic circuit system in shell,
Vibrational system includes vibrating diaphragm and voice coil, and magnetic circuit system includes conductive magnetic yoke, centring magnet and side magnet etc..When acoustical generator works,
Voice coil is powered, by ampere force vibration under the magnetic gap effect of magnetic circuit system, so that vibrating diaphragm drives acoustical generator ante-chamber and back cavity
Airstream vibration generates sound.Wherein, voice coil is generally formed by voice coil line coiling, in order to which the energization to voice coil controls, voice coil
It needs to be electrically connected with FPCB plate, therefore, metallic conduction elastic slice, the beginning and end of voice coil line is generally secured in acoustical generator shell
It is fixed by welding (such as soldering etc.) and one end of metallic conduction elastic slice, the metallic conduction elastic slice other end is electrically connected with FPCB plate
It connects, so that the energization situation of voice coil is by circuit control.At present when making acoustical generator, generally pass through Shooting Technique for metal
Electroconductive elastic sheet is immobilized in the shell, and by taking soldering as an example, the metallic conduction elastic slice of brush plating scolding tin is placed in injection mold and is infused
Modeling is fixed.If metallic conduction elastic slice pad tin thickness is thicker, metallic conduction elastic slice is placed in injection mold and is molded
When, since injection mold has pressure to metallic conduction elastic slice pad, it may occur that rush tin phenomenon, while in order to guarantee the steady of electric welding
It is qualitative, spot welding yield is improved, the tin plating thickness of pad tends to exceed the thickness threshold value for rushing tin phenomenon, if tin layers are flushed to hair
Sound device surface, then influence the appearance of acoustical generator, if tin layers are flushed to inside acoustical generator, can acoustical behavior to acoustical generator etc. produce
It is raw to influence.
Utility model content
Be easy to happen when being molded fixed in order to solve current metallic conduction elastic slice and rush tin phenomenon, appearance to acoustical generator or
Acoustical behavior has an impact, and the utility model provides a kind of acoustical generator, including the shell with accommodating chamber, receiving in the shell
There is vibrational system, the vibrational system includes the vibrating diaphragm and voice coil combined, and the acoustical generator further comprises that metal is led
Electric part, the metallic conduction part include neighbouring vibrating diaphragm and are exposed to the welding disk outside shell, and the top surface of the welding disk includes tool
There are welding surface and the non-solder face of difference in height, wherein the welding surface is used to form to be electrically connected with the voice coil.
Preferably, the welding disk includes the lug boss convexed to form by its top surface, and the top surface of the lug boss forms institute
State welding surface.
Preferably, the welding disk includes being recessed to form recessed portion by its top surface, and the bottom surface of the recessed portion forms described
Welding surface.
Preferably, the metallic conduction part includes the first conduct piece and the second conduct piece,
First conduct piece includes being formed with the first welding disk of welding surface and being extended to form by the first welding disk
First electrical connection section,
Second conduct piece includes the second welding disk for being formed with welding surface, and extended to form by the second welding disk
Second electrical connection section,
The welding surface of the welding surface of first welding disk and second welding disk is for respectively forming and the voice coil
Electrical connection.
Preferably, the metallic conduction part further comprises third conduct piece, and the third conduct piece is electrically connected institute
The welding surface for stating voice coil and second welding disk forms second welding disk with the voice coil and is electrically connected.
Preferably, the third conduct piece includes the third welding disk and the 4th welding disk for being respectively formed with welding surface；
The welding surface of the third pad is electrically connected with the voice coil, the welding surface and described second of the 4th welding disk
The welding surface of pad is electrically connected.
Preferably, the welding surface is located at the central location for forming the weld part top surface, and the non-solder face is centered around
The outside of the welding surface.
Preferably, the welding surface is stamped and formed out by the top surface of the welding disk.
Preferably, the metallic conduction part injection molding is fixed in the shell.
Preferably, first electrical connection section includes the of the first lead division and the first welding disk of connection and the first lead division
One middle part, second electrical connection section include among the second lead division and connect the second welding disk and the second lead division second
Portion, first lead division and the second lead division are both connected on external FPCB plate.
The beneficial effects of the utility model are as follows:
Acoustical generator provided by the utility model, by forming the weldering with difference in height in the welding disk top surface of metallic conduction part
Junction and non-solder face carry out brush-plating technique only on welding surface, non-solder when welding surface is higher than non-solder face
Face is without brush plating material；When welding surface is lower than non-solder face, brush-plating technique needs to meet spot welding requirement thickness in welding surface formation
Brush plating material when, the brush plating material thickness on non-solder face is relatively thin, lower than the thickness threshold value for rushing tin phenomenon, to avoid
It is generated when non-solder face is fixed on shell by injection mold and rushes tin phenomenon, so that brush plating when being molded fixed metallic conduction part
Material will not be flushed to the surface of acoustical generator, and perhaps inside avoids influence to acoustical generator appearance or acoustical behavior etc..
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 shows the structural schematic diagram of acoustical generator in the utility model embodiment.
Fig. 2 shows the composition schematic diagrams of metallic conduction part in the utility model embodiment.
Fig. 3 shows the overlooking structure diagram of metallic conduction part in the utility model embodiment.
Fig. 4 shows one of the positive structure diagram of metallic conduction part in the utility model embodiment.
Fig. 5 shows the partial enlargement diagram of part A in Fig. 3.
Fig. 6 shows two of the positive structure diagram of metallic conduction part in the utility model embodiment.
Fig. 7 shows the partial enlargement diagram of part B in Fig. 6.
Specific embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one below with reference to preferred embodiments and drawings
The explanation of step.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not be limited the protection scope of the present invention.
With at least one is shown the description only actually for the embodiment of falling property be it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology known for person of ordinary skill in the relevant, method and apparatus may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, show that the other examples for the embodiment of falling property can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached circle, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
At present when making acoustical generator, generally metallic conduction elastic slice is immobilized in the shell by Shooting Technique, with soldering
For, the metallic conduction elastic slice of brush plating scolding tin is placed in injection mold and carries out injection molding fixation.If metallic conduction elastic slice pad
Tin thickness is thicker, metallic conduction elastic slice is placed on when being molded in injection mold, since injection mold is to metallic conduction bullet
Piece pad has pressure, it may occur that rushes tin phenomenon, while the stability in order to guarantee electric welding, improves spot welding yield, pad is tin plating
Thickness tends to exceed the thickness threshold value for rushing tin phenomenon, if tin layers are flushed to acoustical generator surface, influences the outer of acoustical generator
See, if tin layers are flushed to inside acoustical generator, can the acoustical behavior etc. to acoustical generator have an impact.
In view of this, the present invention provides a kind of acoustical generators, including the shell with accommodating chamber, receiving in the shell
There is vibrational system, the vibrational system includes the vibrating diaphragm and voice coil combined, and the acoustical generator further comprises that metal is led
Electric part, the metallic conduction part include neighbouring vibrating diaphragm and the welding disk (being exposed in housing cavity) that is exposed to outside shell, institute
The top surface for stating welding disk includes welding surface and the non-solder face with difference in height, wherein the welding surface be used to form with it is described
The electrical connection of voice coil.
Acoustical generator provided by the utility model, by forming the weldering with difference in height in the welding disk top surface of metallic conduction part
Junction and non-solder face carry out brush-plating technique only on welding surface, non-solder when welding surface is higher than non-solder face
Face is without brush plating material；When welding surface is lower than non-solder face, brush-plating technique needs to meet spot welding requirement thickness in welding surface formation
Brush plating material when, the brush plating material thickness on non-solder face is relatively thin, lower than the thickness threshold value for rushing tin phenomenon, to avoid
It is generated when non-solder face is fixed on shell by injection mold and rushes tin phenomenon, so that brush plating when being molded fixed metallic conduction part
Material will not be flushed to the surface of acoustical generator, and perhaps inside avoids influence to acoustical generator appearance or acoustical behavior etc..
It is described in detail below with reference to Fig. 1-7 pairs of the utility model.
The shell of acoustical generator shown in Fig. 1 by the middle shell 12 of acoustical generator mould group, lower casing 11, conductive magnetic yoke 2 bottom and
Steel disc 13 is collectively formed, and includes magnetic circuit system and vibrational system in the shell, and magnetic circuit system includes conductive magnetic yoke 2, center magnetic
Iron and while magnet 3, center magnetic conductive board and while magnetic conductive board 4, vibrational system includes voice coil 51 and vibrating diaphragm 52, but it should be recognized that
The construction of different acoustical generators is different, and in some other achievable embodiments, the shell of acoustical generator can be by acoustical generator monomer
It is formed, the shell of acoustical generator mould group does not lie in this around at least partly acoustical generator monomer, the utility model.
Voice coil 51 includes voice coil leads, and voice coil 51 is electrically connected by voice coil leads with metallic conduction part, specifically, voice coil draws
Line in acoustical generator fair line to metallic conduction part welding surface.
The injection molding of metallic conduction part is immobilized in the shell, specifically, metallic conduction part is embedded in enclosure interior by injection mold,
Both fixed in conjunction with the inner wall of shell, the downside surface of metallic conduction part is incorporated on shell, uper side surface close to voice coil one
End forms the weld part of exposure.The weld part forms being electrically connected for metallic conduction part and voice coil by welding with voice coil leads
It connects, so that voice coil is electrically connected with circuit foundation.
Incorporated by reference to shown in Fig. 1-3, metallic conduction part includes the first conduct piece 61, the second conduct piece 62 and third conduct piece
63, the first conduct piece 61 includes being formed with the first welding disk 611 of welding surface 601 and being extended to form by the first welding disk 611
The first electrical connection section 612, the second conduct piece 62 includes being formed with the second welding disk 621 of welding surface 601, and by the second weldering
The second electrical connection section 622 that pan portion 621 extends to form, the welding surface 601 of the first welding disk 611 is formed to be electrically connected with voice coil,
Third conduct piece 63 is electrically connected the welding surface 601 of voice coil and the second welding disk 621, makes the second welding disk 621 and voice coil shape
At electrical connection.First electrical connection section 612 and the second electrical connection section 622 are respectively and in external circuit or acoustical generator mould group
Circuit electrical connection, and then formed electrical circuit, voice coil energization moved in magnetic gap.
Third conduct piece 63 includes the third welding disk 631 and the 4th welding disk 632 for being respectively formed with welding surface 601；The
The welding surface 601 of three pads is electrically connected with voice coil, the welding surface 601 of the 4th welding disk 632 and 601 electricity of welding surface of the second pad
Connection.
First conduct piece 61 and the second conduct piece 62 are located at the side of the close circuit of acoustical generator, in this way between circuit
Distance it is smaller, the first electrical connection section 612 and the second electrical connection section 622 at least one can by be directly welded at circuit board or
Electrical connection is formed on person's flexible circuit board, or shorter lead is needed to be electrically connected with circuit, so that structure is more stable.
Further, in specific embodiment shown in Fig. 2, the first electrical connection section 612 includes the be exposed to outside shell
First middle part 121 of one lead division 122 and connection the first welding disk 611 and the first lead division 122, the second electrical connection section 622
The second middle part including the second lead division 222 and connection the second welding disk 621 and the second lead division 222 that are exposed to outside shell
221, first lead division 122 and the second lead division 222 are both connected on external FPCB plate (FPCB plate is not shown in the figure).
Since voice coil leads are in coiling, beginning and end are often formed in the two sides of voice coil, in such acoustical generator
In, wherein one end distance the first conduct piece 61 and the second conduct piece 62 of the voice coil leads in left side farther out, need additional in figure
Increase voice coil leads to be connected on the pad of the first conduct piece 61 and the second conduct piece 62, on the one hand be unfavorable in acoustical generator in this way
The wiring in portion space, another aspect stability is poor, and lead, which is easily broken off, influences acoustical generator service life.By the way that third is conductive
Part 63 is arranged in the left side of acoustical generator, i.e., the opposite of the first conduct piece 61 or the second conduct piece 62 is arranged in third conduct piece 63
Side, such voice coil leads one end are connect with wherein one end of third conduct piece 63, and third conduct piece 63 is led with the first or second again
Electric part 62 is electrically connected, and can be reduced the use of lead by reasonable line arrangement in this way, be improved the stability of acoustical generator.
Preferably, as shown in connection with fig. 3, the first lead division 122 is located at not ipsilateral with the first welding disk 611, is conducive in this way
The stress of budget metals conduct piece improves the stability of acoustical generator.
Preferably, metallic conduction part can be formed by the techniques such as flaky metallic material being suppressed, being bent, and such metal is led
The thinner thickness of electric part, occupied space is smaller, and seep through through-hole can be distributed on conductive sheet, when conductive sheet is moulded in module casing
In technique when, the injected plastics material of module casing can pass through seep through through-hole, so that the injected plastics material of conductive sheet two sides be connected
Together.In such manner, it is possible to increase the overall structural strength of acoustical generator shell, will not dive at the position for being molded with conductive sheet
Separation risk.
The position that the utility model is not molded metallic conduction part limits, can be special according to the structure of acoustical generator
Point or actual demand are selected.
In embodiment not shown in the figure, metallic conduction part includes the first conduct piece and the second conduct piece, and at this time first
Conduct piece and the second conduct piece are directly welded with voice coil leads, if the beginning and end of voice coil be located at it is not ipsilateral, first leads
The electrical connection section that electric part or the second conduct piece extend can be configured according to inner space, be equivalent to by third conduct piece with
Second conduct piece is got up by physics rigid connection, is equally reached the technical effect of above-described embodiment.
Further, in the unshowned embodiment, when beginning and end for voice coil are located at same side, first is conductive
Part 61 and the second conduct piece 62 are respectively positioned on close to the side at voice coil leads beginning and end.
Further, in the unshowned embodiment, even if the beginning and end of voice coil are located at not ipsilateral, the first conduction
Part and the second conduct piece can also be located at ipsilateral, be needed at this time by voice coil leads " elongations ", thus influence the wiring of acoustical generator with
The stability of acoustical generator.
In addition, metallic conduction part can be formed by integrated injection molding.
Obviously, it could be aware that by Fig. 2 and above-mentioned statement, the utility model does not limit first to third conduct piece shape
System, shape can be adjusted according to the space layout of acoustical generator and wiring etc., and it will not go into details for the utility model.
The weld part of metallic conduction part has difference in height, in certain embodiments, as shown in Figures 4 and 5, welding disk packet
The lug boss convexed to form by its top surface is included, the top surface of lug boss forms welding surface 601.Raised part is not formed on weld part
Non-solder face 602, in this way in brush plating material on welding surface 601, non-solder face 602 is located at the lower section of welding surface 601, passes through work
Skill control carries out brush-plating technique only on welding surface 601, and non-solder face 602 is without brush plating material, so as to avoid non-
It is generated when welding surface 602 is fixed on shell by injection mold and rushes tin phenomenon, so that brush plating when being molded fixed metallic conduction part
Material will not be flushed to the surface of acoustical generator, and perhaps inside avoids influence to acoustical generator appearance or acoustical behavior etc..
In Fig. 6 and embodiment shown in Fig. 7, welding disk includes being recessed to form recessed portion by its top surface, the bottom of recessed portion
Face forms welding surface 601.The part that the top surface of weld part is not recessed forms non-solder face 602, in this way when carrying out brush-plating technique,
When the formation of welding surface 601 meets the brush plating material of spot welding requirement thickness, the brush plating material thickness on non-solder face 602 is relatively thin,
Lower than the thickness threshold value for rushing tin phenomenon, produced when being fixed on shell so as to avoid non-solder face 602 by injection mold
Tin phenomenon is rushed in life.
Optionally, brush plating material can be tin metal material, and brush-plating technique is tin plating technique.
Further, welding surface 601 can be formed through the stamping process, i.e., be stamped and formed out in the top surface of welding disk.
Metallic conduction part is different from being traditionally used for the materials such as the flexible circuit board of circuit trace, what the utility model used
Metallic conduction part can directly injection molding inside module casing, the thickness of module casing itself is utilized.And it is traditional soft
The materials such as property circuit board must be laid on the surface of module casing, so the space in module casing can be occupied, to cause
The size of module casing entirety increases.And structure improvement provided by the utility model can save this segment space, to reduce ruler
It is very little to provide possibility.For example, laying the space that circuit board needs to occupy 1mm wide in module casing, and uses and lead metal
Electric part is directly injection-moulded in the scheme in module casing, can reduce the width of 1mm.In addition, by metallic conduction part to signal into
Row conducting increases flexibility for the wire laying mode of acoustical generator, can be in different positions for the structure of specific acoustical generator
Place is connected by the way of metallic conduction part of different shapes, and circuit board wiring is used in reduction.On the other hand, it infuses in the housing
Metallic conduction part is moulded, can effectively avoid the injection molding of module casing from the defect that becomes second nature such as shrinking, generate stress trace, raising module casing
The structural reliability and yield of itself.Moreover, metallic conduction part also can be improved the stiffness and strength of shell.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention, for those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here,
It is all to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
The column of protection scope.
Claims (10)
1. a kind of acoustical generator contains vibrational system, the vibrational system packet including the shell with accommodating chamber in the shell
The vibrating diaphragm and voice coil combined are included, the acoustical generator further comprises metallic conduction part, which is characterized in that
The metallic conduction part includes neighbouring vibrating diaphragm and is exposed to the welding disk outside shell, and the top surface of the welding disk includes having
The welding surface of difference in height and non-solder face, wherein the welding surface is used to form to be electrically connected with the voice coil.
2. acoustical generator according to claim 1, which is characterized in that the welding disk includes the protrusion convexed to form by its top surface
Portion, the top surface of the lug boss form the welding surface.
3. acoustical generator according to claim 1, which is characterized in that the welding disk includes being recessed to form recess by its top surface
Portion, the bottom surface of the recessed portion form the welding surface.
4. acoustical generator according to claim 1, which is characterized in that the metallic conduction part includes the first conduct piece and second
Conduct piece,
First conduct piece includes first for being formed with the first welding disk of welding surface and being extended to form by the first welding disk
Electrical connection section,
Second conduct piece includes the second welding disk for being formed with welding surface, and second extended to form by the second welding disk
Electrical connection section,
The welding surface of the welding surface of first welding disk and second welding disk is for respectively forming the electricity with the voice coil
Connection.
5. acoustical generator according to claim 4, which is characterized in that the metallic conduction part further comprises third conduction
Part, the third conduct piece are electrically connected the welding surface of the voice coil and second welding disk, make second welding disk
It is electrically connected with voice coil formation.
6. acoustical generator according to claim 5, which is characterized in that the third conduct piece includes being respectively formed with welding surface
Third welding disk and the 4th welding disk；
The welding surface of the third pad is electrically connected with the voice coil, the welding surface and second pad of the 4th welding disk
Welding surface electrical connection.
7. acoustical generator according to claim 1, which is characterized in that the welding surface, which is located at, to be formed in the welding disk top surface
Position is entreated, the non-solder face is centered around the outside of the welding surface.
8. acoustical generator according to claim 1, which is characterized in that the top surface punching press shape that the welding surface passes through the welding disk
At.
9. acoustical generator according to claim 1, which is characterized in that the metallic conduction part injection molding is fixed in the shell.
10. acoustical generator according to claim 4, which is characterized in that first electrical connection section includes the first lead division and company
The first middle part of the first welding disk and the first lead division is connect, second electrical connection section includes the second lead division and connection second
Second middle part of welding disk and the second lead division, first lead division and the second lead division are both connected to external FPCB plate
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821548390.6U CN208863072U (en) | 2018-09-20 | 2018-09-20 | A kind of acoustical generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821548390.6U CN208863072U (en) | 2018-09-20 | 2018-09-20 | A kind of acoustical generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208863072U true CN208863072U (en) | 2019-05-14 |
Family
ID=66418870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821548390.6U Active CN208863072U (en) | 2018-09-20 | 2018-09-20 | A kind of acoustical generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208863072U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238071A1 (en) * | 2020-05-25 | 2021-12-02 | 歌尔股份有限公司 | Sound generating apparatus and electronic device |
| WO2022110450A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound production device |
-
2018
- 2018-09-20 CN CN201821548390.6U patent/CN208863072U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238071A1 (en) * | 2020-05-25 | 2021-12-02 | 歌尔股份有限公司 | Sound generating apparatus and electronic device |
| WO2022110450A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound production device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110418257B (en) | Sound producing device | |
| CN208863072U (en) | A kind of acoustical generator | |
| CN108206619A (en) | Linear vibration electric motor | |
| CN108347150B (en) | Linear vibration motor | |
| CN109495819B (en) | Sound production device and earphone | |
| CN202190382U (en) | Sounding component | |
| CN102970643B (en) | Microspeaker | |
| CN210183527U (en) | Sound producing device | |
| CN107147976B (en) | Acoustic generator and electronic device comprising same | |
| CN209516883U (en) | Vibrating motor and haptic apparatus | |
| CN206442515U (en) | A kind of acoustical generator and the acoustical generator module including the acoustical generator | |
| CN101203065A (en) | Minitype sounding device and method of manufacture | |
| CN202949562U (en) | Miniature loudspeaker | |
| US11950075B2 (en) | Sounding device | |
| CN201854411U (en) | Minitype moving-coil electroacoustic transducer | |
| CN205249471U (en) | Miniature sounder | |
| CN202435569U (en) | Earphone core | |
| CN108093354B (en) | Moving iron telephone receiver | |
| CN206963060U (en) | Acoustical generator and electronic equipment | |
| CN208940151U (en) | Sounding device shell and a kind of sounding device mould group | |
| CN203590441U (en) | Loudspeaker module | |
| CN210670555U (en) | Loudspeaker with five-magnetic structure | |
| CN220307369U (en) | Miniature loudspeaker | |
| CN203984616U (en) | Loud speaker module | |
| CN219876096U (en) | Vibration sounding device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |