CN204442673U - Suppress the speaker unit of polarization - Google Patents
Suppress the speaker unit of polarization Download PDFInfo
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- CN204442673U CN204442673U CN201520189152.0U CN201520189152U CN204442673U CN 204442673 U CN204442673 U CN 204442673U CN 201520189152 U CN201520189152 U CN 201520189152U CN 204442673 U CN204442673 U CN 204442673U
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- electret layer
- vibrating diaphragm
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Abstract
The utility model discloses a kind of speaker unit suppressing polarization, comprising: the shell of vibrational system, magnetic circuit system, accommodation vibrational system and magnetic circuit system, and the first electret layer, the second electret layer and the 3rd electret layer that charge polarity is consistent; First electret layer depends on vibrational system, second electret layer depends on the first fixed part on vibrational system and relative with the first electret layer, and the 3rd electret layer depends on the second fixed part under vibrational system and relative with the first electret layer; And the first electret layer, the second electret layer and the 3rd electret layer are parallel to each other.The utility model adopts applied force of electrostatic field to suppress the polarization of vibrating diaphragm on direction of vibration, and electrostatic field force relies on electret layer to provide, do not need extrinsic motivated signal and simple for assembly process, inhibition good.
Description
Technical field
The utility model relates to a kind of speaker unit suppressing polarization.
Background technology
For Microspeaker module, the device of module is normally asymmetric, the manufacturing tolerance being difficult to avoid simultaneously owing to existing in Microspeaker assembling process, the vibrating diaphragm of Microspeaker is often caused to produce polarization in Large travel range situation, main manifestations be the displacement of four corner locations of reinforcement part not etc., namely on direction of vibration, the displacement of vibrating diaphragm plane is not of uniform size causes.
And the requirement of internal magnetic gap and outer magnetic gap is more and more higher on market, the magnetic gap day by day reduced also can be more and more responsive to the polarization of vibrating diaphragm.
Vibrating diaphragm polarization can bring following problem:
1) the inconsistent meeting of displacement on this direction of vibration causes the stress of vibrating diaphragm plane not concentrated, thus easily causes the stress of partial block excessive and cause the overtired even film of vibrating diaphragm to split.
2) on direction of vibration there is deflection in the inconsistent voice coil loudspeaker voice coil that also can cause of vibration displacement in magnetic gap, thus touch with magnetic circuit generation wiping.
Current, the polarization by using centring disk to alleviate product is had in Microspeaker, centring disk suppresses polarization mainly through mechanical return force, but centring disk can occupy certain space, is applied in Microspeaker also larger to the challenge of technique simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of new technical scheme suppressing loud speaker polarization.
The utility model provides a kind of speaker unit suppressing polarization, comprising:
The shell of vibrational system, magnetic circuit system, the described vibrational system of accommodation and described magnetic circuit system, and the first electret layer, the second electret layer and the 3rd electret layer that charge polarity is consistent;
Described first electret layer depends on described vibrational system, described second electret layer depends on the first fixed part on described vibrational system and relative with described first electret layer, and described 3rd electret layer depends on the second fixed part under described vibrational system and relative with described first electret layer; And described first electret layer, the second electret layer and described 3rd electret layer are parallel to each other.
Preferably, described vibrational system comprises vibrating diaphragm and is positioned at the voice coil loudspeaker voice coil below described vibrating diaphragm, and described first electret layer depends on described vibrating diaphragm.
Preferably, also comprise and to be arranged between described vibrating diaphragm and described voice coil loudspeaker voice coil and to isolate the first thermal resistent material layer of described first electret layer and described voice coil loudspeaker voice coil.
Preferably, described first thermal resistent material layer covers the Zone Full of described vibrating diaphragm, or is only arranged at the region that described vibrating diaphragm is connected with described voice coil loudspeaker voice coil.
Preferably, described vibrating diaphragm comprises vibrating diaphragm body and reinforcement part, and described vibrating diaphragm body comprises the ring portion being positioned at middle planar portions and being positioned at planar portions edge, and described reinforcement part is arranged on the top of described planar portions; Described first electret layer is arranged on described planar portions near the side of described voice coil loudspeaker voice coil or be arranged on the side of described planar portions near described reinforcement part, or is arranged on the top of described reinforcement part.
Preferably, also comprise and to be arranged between described vibrating diaphragm and described voice coil loudspeaker voice coil and to isolate the first thermal resistent material layer of described first electret layer and described voice coil loudspeaker voice coil;
Preferably, described first thermal resistent material layer covers the Zone Full of described vibrating diaphragm body, or only covers the Zone Full of described planar portions, or is only arranged at the region that described vibrating diaphragm is connected with described voice coil loudspeaker voice coil.
Preferably, described first electret layer, the second electret layer and the 3rd electret layer include the isolated area of same quantity, and the shape of whole described isolated area is identical with size; Each isolated area of described first electret layer is with the equal quantity of electric charge and arrange about vibrating diaphragm central point; Each isolated area of described second electret layer is arranged with the equal quantity of electric charge and with each isolated area one_to_one corresponding of described first electret layer; Each isolated area of described 3rd electret layer is arranged with the equal quantity of electric charge and with each isolated area one_to_one corresponding of described first electret layer.
Preferably, the reinforcement part that described vibrating diaphragm comprises vibrating diaphragm body and is connected with described vibrating diaphragm body, each isolated area of described first electret layer is distributed in the edge of the join domain of described vibrating diaphragm body and described reinforcement part.
Preferably, described shell comprises the protecgulum be arranged on above described vibrational system, and described second electret layer depends on described protecgulum and is arranged on the side of described protecgulum towards described vibrational system.
Preferably, described vibrational system comprises vibrating diaphragm and is positioned at the voice coil loudspeaker voice coil below described vibrating diaphragm, described magnetic circuit system is positioned at the below of described vibrational system, and described magnetic circuit system comprises washer, and described 3rd electret layer depends on described washer and is arranged on the side of described washer near described vibrating diaphragm.
Preferably, the second thermal resistent material layer be arranged between described 3rd electret layer and described washer is also comprised.
Preferably, described first electret layer, the second electret layer and the 3rd electret layer are electret film or electret pole plate.
Preferably, the thickness of described first electret layer, the second electret layer and the 3rd electret layer is um ~ mm rank.
Preferably, the material of described first electret layer, the second electret layer and the 3rd electret layer comprises following arbitrary or combination: fluorinated ethylene propylene copolymer, polytetrafluoroethylene, poly-difluoroethylene, polyethylene, polypropylene, Polyetherimide, polyethylene terephthalate, expanded PTFE, polyvinylidene fluoride.
Inventor of the present utility model finds, in the prior art, centring disk can only be used to alleviate the polarization of speaker product, and this method is again with the limitation of self.In order to solve the polarization phenomena of speaker product, the utility model proposes the technical scheme utilizing applied force of electrostatic field to suppress loud speaker polarization, this direction of dealing with problems is that those skilled in the art never expect or does not anticipate, therefore the utility model is a kind of new technical scheme.
The utility model adopts applied force of electrostatic field to suppress the polarization of vibrating diaphragm on direction of vibration, and electrostatic field force relies on electret layer to provide, do not need extrinsic motivated signal and simple for assembly process, inhibition good.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
In the description combined and the accompanying drawing forming a part for specification shows embodiment of the present utility model, and illustrate that one is used from and explains principle of the present utility model together with it.
Fig. 1 is the structural representation that the utility model suppresses the first embodiment of the speaker unit of polarization.
Fig. 2-3 is principle schematic that the utility model suppresses the speaker unit of polarization.
Fig. 4 is the partial structurtes schematic diagram that the utility model suppresses the second embodiment of the speaker unit of polarization.
Fig. 5 is the partial structurtes schematic diagram that the utility model suppresses the 3rd embodiment of the speaker unit of polarization.
Fig. 6 is the partial structurtes schematic diagram that the utility model suppresses the 4th embodiment of the speaker unit of polarization.
Fig. 7 a-7c is the structural representation that the utility model suppresses the 5th embodiment of the speaker unit of polarization.
Fig. 8-9 is exploded perspective views that the utility model suppresses the 5th embodiment of the speaker unit of polarization.
Embodiment
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
The technology and equipment known for person of ordinary skill in the relevant may not discuss in detail, but in the appropriate case, described technology and equipment should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
The utility model suppresses the shell of the speaker unit involving vibrations system of polarization, magnetic circuit system, accommodation vibrational system and magnetic circuit system, and the first electret layer, the second electret layer and the 3rd electret layer that charge polarity is consistent; First electret layer depends on vibrational system, second electret layer depends on the first fixed part on vibrational system and relative with the first electret layer, 3rd electret layer depends on the second fixed part under vibrational system and relative with the first electret layer, and the first electret layer, the second electret layer and the 3rd electret layer are parallel to each other.The utility model utilizes the applied force of electrostatic field between electret layer to realize the suppression to the polarization of vibrational system on direction of vibration, electrostatic field force relies on the repulsion between electret layer to provide, because electret can carry stable charging for a long time independent of external power source, so the foundation of electrostatic field is very simple.
Wherein, vibrational system comprises vibrating diaphragm and is positioned at the voice coil loudspeaker voice coil below vibrating diaphragm, and the first electret layer depends on vibrating diaphragm.Speaker unit also comprises and to be arranged between vibrating diaphragm and voice coil loudspeaker voice coil and to isolate the first thermal resistent material layer of the first electret layer and voice coil loudspeaker voice coil, and the first thermal resistent material layer can cover the Zone Full of vibrating diaphragm or only be arranged at the region that vibrating diaphragm is connected with voice coil loudspeaker voice coil.
With reference to Figure 1 shows that the first embodiment of speaker unit suppressing polarization, loud speaker involving vibrations system, magnetic circuit system and hold the shell of vibrational system and magnetic circuit system.The vibrational system of loud speaker comprises vibrating diaphragm and is positioned at the voice coil loudspeaker voice coil 22 below vibrating diaphragm, vibrating diaphragm comprises vibrating diaphragm body 212 and reinforcement part 211, vibrating diaphragm body 212 comprises the planar portions being positioned at centre, the ring portion being positioned at planar portions edge and is positioned at the fixed part fixing with shell of outermost, and reinforcement part 211 is arranged on the top of planar portions.The magnetic circuit system of loud speaker is positioned at the below of vibrational system, comprises washer 31, magnet 32 and frame 33 successively from top to bottom.Shell comprises the protecgulum 1 be arranged at above vibrating diaphragm.
Shown in figure 1, the first electret layer 100 depends on vibrating diaphragm, is arranged on the side of planar portions near voice coil loudspeaker voice coil 22; First fixed part adopts protecgulum 1, second electret layer 200 depend on protecgulum 1 and be arranged on the side of protecgulum 1 towards vibrational system; Second fixed part adopts washer the 31, three electret layer 300 depend on washer 31 and be arranged on the side of washer 31 near vibrating diaphragm; First electret layer 100, second electret layer 200 and the 3rd electret layer 300 are parallel to each other, and the polarity of the electric charge carried is consistent, and being all such as the positive charge in Fig. 1, can certainly be all negative electrical charge.Also comprise the first thermal resistent material layer 400 and the second thermal resistent material layer 500, first thermal resistent material layer 400 to be arranged between vibrating diaphragm and voice coil loudspeaker voice coil 22 and to isolate the first electret layer 100 and voice coil loudspeaker voice coil 22, second thermal resistent material layer 500 is arranged between the 3rd electret layer 300 and washer 31, the Zone Full in the first thermal resistent material layer 400 only overlay planes portion in the present embodiment.
With reference to the second embodiment that Figure 4 shows that the speaker unit suppressing polarization, be with the difference of the first embodiment, first electret layer 100 is arranged on the side of planar portions near reinforcement part 211, the Zone Full in the first thermal resistent material layer 400 only overlay planes portion.
With reference to Figure 5 shows that the 3rd embodiment of speaker unit suppressing polarization, and the difference of the first embodiment is, the first electret layer 100 is arranged on the top of reinforcement part 211, the Zone Full in the first thermal resistent material layer 400 only overlay planes portion.
With reference to the 4th embodiment that Figure 6 shows that the speaker unit suppressing polarization, be with the difference of the first embodiment, first electret layer 100 is arranged on the side of planar portions near reinforcement part 211, and the first thermal resistent material layer 400 covers the Zone Full of vibrating diaphragm body 212.
Generally speaking, the first electret layer 100 is arranged on planar portions near the side of voice coil loudspeaker voice coil 22 or be arranged on the side of planar portions near reinforcement part 211, or is arranged on the top of reinforcement part 211; First heat resistant material to be arranged between vibrating diaphragm and voice coil loudspeaker voice coil 22 and to isolate the first electret layer 100 and voice coil loudspeaker voice coil 22, the Zone Full of vibrating diaphragm body 212 can be covered, or the only Zone Full in overlay planes portion, or the region being only arranged at that vibrating diaphragm is connected with voice coil loudspeaker voice coil 22.Second thermal resistent material layer 500 is arranged between the 3rd electret layer 300 and washer 31.
Be depicted as the 5th embodiment of the speaker unit suppressing polarization with reference to figure 7-9, be followed successively by protecgulum 1, vibrational system and magnetic circuit system 3 from top to bottom, vibrational system comprises vibrating diaphragm 21 and voice coil loudspeaker voice coil (not shown in FIG.), magnetic circuit system are followed successively by washer 31, magnet 32, frame 33 from top to bottom.First electret layer depends on vibrating diaphragm 21, is specifically arranged at the top of reinforcement part 212; Second electret layer depends on protecgulum 1, is arranged on the side of protecgulum 1 towards vibrational system; 3rd electret layer depends on washer 31, is arranged at the side of washer 31 near vibrating diaphragm 21.Be with the difference of the first embodiment, the first electret layer, the second electret layer and the 3rd electret layer include 4 isolated areas, and the shape of each isolated area is identical with area; 4 isolated area 100-1 of the first electret layer 100 with the equal quantity of electric charge, about the central point of vibrating diaphragm 21, and the edge of join domain all near vibrating diaphragm body 212 and reinforcement part 211; 4 isolated area 200-1 of the second electret layer 200 arrange with the equal quantity of electric charge and with 4 isolated area 100-1 one_to_one corresponding of the first electret layer 100; 4 isolated area 300-1 of the 3rd electret layer 300 arrange with the equal quantity of electric charge and with 4 isolated area 100-1 one_to_one corresponding of the first electret layer 100.Through this set, the displacement at four angles of vibrating diaphragm 21 suppresses respectively by independently electret, and inhibition is better.
Wherein, first electret layer 100, second electret layer 200 or the 3rd electret layer 300 can be electret film or electret pole plate, thickness can be um ~ mm rank, and material can comprise following arbitrary or combination: fluorinated ethylene propylene copolymer, polytetrafluoroethylene, poly-difluoroethylene, polyethylene, polypropylene, Polyetherimide, polyethylene terephthalate, expanded PTFE, polyvinylidene fluoride.
Wherein, each electret layer can realize depending on by coating electret or the bonding electret film/mode of electret pole plate.
Referring to figs. 2 and 3 the principle of speaker unit suppressing polarization, in the utility model, the polarity of the electric charge that the first electret 100, second electret layer 200, the 3rd electret layer 300 carry is consistent, wherein the first electret layer 100 with the quantity of electric charge be Q
1, the second electret layer 200 with the quantity of electric charge be Q
2, the 3rd electret layer 300 with the quantity of electric charge be Q
3, the distance between the first electret layer 100 and the second electret layer 200 is d
1, the distance between the first electret layer 100 and the 3rd electret layer 300 is d
2, as can be seen from Figure 2, the first electret layer 100 is subject to downward repulsion F1 and repulsion F2 upwards, time under vibrating diaphragm 21 does not have work to remain static, should meet F1=F2, should meet according to electrostatic force formula is known
As can be seen from Figure 3, what A point was subject to that downward repulsion F1 and repulsion F2 upwards, A point be subject to make a concerted effort=F1-F2, B point be subject to that downward repulsion F3 and repulsion F4 upwards, B point be subject to joint efforts=F3-F4; When there is no polarization, F1=F3, F2=F4; If the displacement of vibrating diaphragm 21 on direction of vibration is uneven, when namely there is polarization, such as, when the displacement X2 that B point upwards vibrates is greater than the displacement X1 that A point upwards vibrates, then the distance of B point distance protecgulum 1 is less than the distance of A point distance protecgulum 1, F3 is caused to be greater than F1 and F4 is less than F2, the power contrary with displacement that B point is subject to is greater than the power contrary with displacement that A point is subject to, and visible the utility model can be good at suppressing this polarization.
From content above, can according to formula
adjust the second electret layer 200 with quantity of electric charge Q
2with the 3rd electret layer 300 with quantity of electric charge Q
3ratio to adjust the equilbrium position of vibrating diaphragm 21.So the utility model additionally provides a kind of method adjusting diaphragm of loudspeaker equilbrium position, comprise the following steps: foregoing speaker unit is provided; According to formula
adjust described second electret layer with quantity of electric charge Q
2with described 3rd electret layer with quantity of electric charge Q
3ratio to adjust the equilbrium position of described vibrating diaphragm, the distance wherein between the first electret layer and the second electret layer is d
1, the distance between the first electret layer and the 3rd electret layer is d
2.It should be noted that, this set-up procedure may be carried out after speaker unit manufacture completes, and also likely carries out with in manufacture process.
In vibration processes, voice coil loudspeaker voice coil 22 is except being subject to the impact of vibrating diaphragm 21 compliance, also be subject to the electrostatic field of the electret layer coming from vibrating diaphragm about 21, due to electrostatic field for vibrating diaphragm 21 provides the electrostatic force being similar to restoring force, so this electrostatic field also has equivalent " compliance ", therefore can by adjustment Q
1, Q
2, Q
3adjust the compliance of vibrating diaphragm 21.So the utility model additionally provides a kind of method adjusting diaphragm of loudspeaker compliance, comprise the following steps: foregoing speaker unit is provided; Adjust described first electret layer with quantity of electric charge Q
1, the second electret layer with quantity of electric charge Q
2, and the 3rd electret layer with quantity of electric charge Q
3to adjust the compliance of described vibrating diaphragm.It should be noted that, this set-up procedure may be carried out after speaker unit manufacture completes, and also likely carries out with in manufacture process.
The utility model has following beneficial effect:
1) electrostatic field restoring force suppresses to be contactless to vibrating diaphragm polarization, simple for assembly process.
2) in scheme, charged electret layer independently exists, and does not need extrinsic motivated signal.
3) by adjustment quantity of electric charge Q
2q
3size, the resting position of vibrating diaphragm can be adjusted, thus reduce speaker product direct current offset at low frequency, and then improve the harmonic distortion situation of product.
4) the non-linear of compliance of electrostatic place equivalence in the utility model can calculate, by adjustment quantity of electric charge Q
1q
2q
3, just can adjust the compliance of vibrating diaphragm and whole vibrational system.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (15)
1. suppress a speaker unit for polarization, it is characterized in that, comprising:
The shell of vibrational system, magnetic circuit system, the described vibrational system of accommodation and described magnetic circuit system, and the first electret layer, the second electret layer and the 3rd electret layer that charge polarity is consistent;
Described first electret layer depends on described vibrational system, described second electret layer depends on the first fixed part on described vibrational system and relative with described first electret layer, and described 3rd electret layer depends on the second fixing fitting under described vibrational system and relative with described first electret layer; And described first electret layer, the second electret layer and described 3rd electret layer are parallel to each other.
2. device according to claim 1, is characterized in that, described vibrational system comprises vibrating diaphragm and is positioned at the voice coil loudspeaker voice coil below described vibrating diaphragm, and described first electret layer depends on described vibrating diaphragm.
3. device according to claim 2, is characterized in that, also comprises and to be arranged between described vibrating diaphragm and described voice coil loudspeaker voice coil and to isolate the first thermal resistent material layer of described first electret layer and described voice coil loudspeaker voice coil.
4. device according to claim 3, is characterized in that, described first thermal resistent material layer covers the Zone Full of described vibrating diaphragm or is only arranged at the region that described vibrating diaphragm is connected with described voice coil loudspeaker voice coil.
5. device according to claim 2, it is characterized in that, described vibrating diaphragm comprises vibrating diaphragm body and reinforcement part, and described vibrating diaphragm body comprises the ring portion being positioned at middle planar portions and being positioned at planar portions edge, and described reinforcement part is arranged on the top of described planar portions; Described first electret layer is arranged on described planar portions near the side of described voice coil loudspeaker voice coil or be arranged on the side of described planar portions near described reinforcement part, or is arranged on the top of described reinforcement part.
6. device according to claim 5, is characterized in that, also comprises and to be arranged between described vibrating diaphragm and described voice coil loudspeaker voice coil and to isolate the first thermal resistent material layer of described first electret layer and described voice coil loudspeaker voice coil;
7. device according to claim 6, is characterized in that, described first thermal resistent material layer covers the Zone Full of described vibrating diaphragm body, or only covers the Zone Full of described planar portions, or is only arranged at the region that described vibrating diaphragm is connected with described voice coil loudspeaker voice coil.
8. device according to claim 2, is characterized in that, described first, second, third electret layer includes the isolated area of same quantity, and the shape of whole described isolated area is identical with area; Each isolated area of described first electret layer is with the equal quantity of electric charge and arrange about vibrating diaphragm central point; Each isolated area of described second electret layer is arranged with the equal quantity of electric charge and with each isolated area one_to_one corresponding of described first electret layer; Each isolated area of described 3rd electret layer is arranged with the equal quantity of electric charge and with each isolated area one_to_one corresponding of described first electret layer.
9. device according to claim 8, it is characterized in that, the reinforcement part that described vibrating diaphragm comprises vibrating diaphragm body and is connected with described vibrating diaphragm body, each isolated area of described first electret layer is distributed in the edge of the join domain of described vibrating diaphragm body and described reinforcement part.
10. device according to claim 2, is characterized in that, described shell comprises the protecgulum be arranged on above described vibrational system, and described second electret layer depends on described protecgulum and is arranged on the side of described protecgulum towards described vibrational system.
11. devices according to claim 2, it is characterized in that, described vibrational system comprises vibrating diaphragm and is positioned at the voice coil loudspeaker voice coil below described vibrating diaphragm, described magnetic circuit system is positioned at the below of described vibrational system, described magnetic circuit system comprises washer, and described 3rd electret layer depends on described washer and is arranged on the side of described washer near described vibrating diaphragm.
12. devices according to claim 11, is characterized in that, also comprise the second thermal resistent material layer be arranged between described 3rd electret layer and described washer.
13. devices according to any one of claim 1-12, it is characterized in that, described first electret layer, the second electret layer and the 3rd electret layer are electret film or electret pole plate.
14. devices according to any one of claim 1-12, it is characterized in that, the thickness of described first electret layer, the second electret layer and the 3rd electret layer is um ~ mm rank.
15. devices according to any one of claim 1-12, it is characterized in that, the material of described first electret layer, the second electret layer and the 3rd electret layer comprises following arbitrary or combination: fluorinated ethylene propylene copolymer, polytetrafluoroethylene, poly-difluoroethylene, polyethylene, polypropylene, Polyetherimide, polyethylene terephthalate, expanded PTFE, polyvinylidene fluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189152.0U CN204442673U (en) | 2015-03-31 | 2015-03-31 | Suppress the speaker unit of polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189152.0U CN204442673U (en) | 2015-03-31 | 2015-03-31 | Suppress the speaker unit of polarization |
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| Publication Number | Publication Date |
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| CN204442673U true CN204442673U (en) | 2015-07-01 |
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ID=53610483
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| CN201520189152.0U Expired - Fee Related CN204442673U (en) | 2015-03-31 | 2015-03-31 | Suppress the speaker unit of polarization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768111A (en) * | 2015-03-31 | 2015-07-08 | 歌尔声学股份有限公司 | Loudspeaker device for restraining polarization and method for adjusting vibrating diaphragm balance position and paraelectric performance |
| CN107071670A (en) * | 2017-05-31 | 2017-08-18 | 努比亚技术有限公司 | Loudspeaker, mobile terminal, control method and computer-readable medium |
-
2015
- 2015-03-31 CN CN201520189152.0U patent/CN204442673U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768111A (en) * | 2015-03-31 | 2015-07-08 | 歌尔声学股份有限公司 | Loudspeaker device for restraining polarization and method for adjusting vibrating diaphragm balance position and paraelectric performance |
| WO2016155341A1 (en) * | 2015-03-31 | 2016-10-06 | 歌尔声学股份有限公司 | Polarization-suppressing speaker apparatus and method for adjusting balancing position and compliance of diaphragm |
| CN104768111B (en) * | 2015-03-31 | 2018-01-30 | 歌尔股份有限公司 | Suppress the speaker unit and adjustment vibrating diaphragm equilbrium position and pliable method of polarization |
| US10225659B2 (en) | 2015-03-31 | 2019-03-05 | Goertek.Inc | Speaker device capable of restraining polarization, method for adjusting diaphragm balance position, and method for adjusting diaphragm compliance performance |
| CN107071670A (en) * | 2017-05-31 | 2017-08-18 | 努比亚技术有限公司 | Loudspeaker, mobile terminal, control method and computer-readable medium |
| CN107071670B (en) * | 2017-05-31 | 2019-10-25 | 努比亚技术有限公司 | Loudspeaker, mobile terminal, control method and computer-readable medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20180331 |