CN103260116B - Flat woofer - Google Patents
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- CN103260116B CN103260116B CN201310166950.7A CN201310166950A CN103260116B CN 103260116 B CN103260116 B CN 103260116B CN 201310166950 A CN201310166950 A CN 201310166950A CN 103260116 B CN103260116 B CN 103260116B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
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Abstract
The present invention provides a kind of flat woofer, the driver element separate including vibrating diaphragm, at least four and house fixing described vibrating diaphragm and the shell of described driver element；Wherein, driver element includes independent voice coil unit and the magnetic circuit unit corresponding with voice coil unit；Voice coil unit is fitted in the top dome portion of vibrating diaphragm；Flat woofer also includes that the internal circuit connecting speaker and the FPCB of external circuit, FPCB part are fixed on vibrating diaphragm the side of voice coil unit of fitting；Voice coil unit is electrically connected with the pad being arranged on the part that FPCB is fixed on vibrating diaphragm by voice coil leads.The flat woofer that the present invention provides, to realize the slimming of woofer, and can solve the problem that the thick and heavy problem with excessive magnet performance of voice coil loudspeaker voice coil.
Description
Technical Field
The invention relates to the technical field of acoustoelectric technology, in particular to a flat plate type bass loudspeaker.
Background
With the progress of society and the development of technology, in recent years, the volume of electronic products such as televisions is gradually reduced and the electronic products are gradually thinned, and the performance requirements of the electronic products are increasingly higher, so that the volume of electronic parts matched with the electronic products is also required to be reduced, and the performance and consistency are required to be improved.
The conventional woofer usually adopts a cone-shaped paper cone-shaped vibrating diaphragm, the center of the cone-shaped vibrating diaphragm comprises a voice coil, and the magnetic circuit system is large in size and thick. The woofer with the structure has larger product thickness, cannot meet the requirement of the current electronic products for thinning, and has low practicability.
Furthermore, woofers are generally of a larger caliber, i.e., have a larger diaphragm area, in order to ensure their low frequency sound effects. If a flat vibrating diaphragm is adopted and a structure of a voice coil is combined (the voice coil needs to be located at a position close to the edge), the voice coil is required to be larger in size and difficult to wind and deform due to the large-area vibrating diaphragm. In addition, the magnet size of the existing woofer is larger, the washer and the basin frame are smaller in thickness when the woofer is applied in a thin mode, a magnetic circuit system is easy to saturate, the magnet performance is excessive, waste is caused, and the cost is higher.
Based on the above factors, there is a need for improvements in products of conventional construction.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a flat woofer that realizes a thin woofer and solves the problems of a thick voice coil and an excessive magnet performance.
The invention provides a flat-plate type bass loudspeaker, which comprises a vibrating diaphragm, at least four mutually independent driving units and a shell for accommodating and fixing the vibrating diaphragm and the driving units; wherein,
the driving unit comprises an independent voice coil unit and a magnetic circuit unit corresponding to the voice coil unit, and the voice coil unit is attached to the top of the ball of the vibrating diaphragm; and,
the flat plate type bass loudspeaker also comprises an FPCB for communicating an internal circuit and an external circuit of the loudspeaker, and the FPCB is partially fixed on one side of the vibrating diaphragm, which is attached to the voice coil unit; wherein,
the voice coil unit is electrically connected to a pad provided at a portion of the FPCB fixed to the diaphragm through a voice coil lead.
In addition, the diaphragm is preferably rectangular and comprises a rigid ball top part at the central position and a folded ring part at the edge position; and a voice coil unit is respectively attached and fixed at four corners of the top of the ball.
Preferably, the housing is provided with a mounting hole for housing and fixing the magnetic circuit unit, and an upper side surface of the housing is fixedly coupled to an edge of the folded ring portion.
In addition, the preferable scheme is that the shell comprises a mounting plane and an annular side wall around the mounting plane, and the mounting plane is provided with a sound outlet penetrating through the mounting plane;
the portion of the FPCB not fixed to the diaphragm extends to a side of the mounting plane away from the diaphragm through the sound outlet hole.
In addition, the preferred scheme is that the FPCB is in a long strip shape;
the sound outlet holes comprise a center sound outlet hole and an edge sound outlet hole which are respectively arranged at the center position and the edge position of the mounting plane;
FPCB's middle part is fixed in the one side of laminating voice coil loudspeaker voice coil unit on the vibrating diaphragm, and both ends extend to the one side of keeping away from the vibrating diaphragm to mounting plane through edge phonate hole.
In addition, it is preferable that both end portions of the FPCB are bent in an arc structure to a position parallel to the mounting plane.
In addition, the preferred scheme is that the front and back surfaces of the FPCB are provided with bonding pads, and the bonding pads arranged on the front and back surfaces of the FPCB are respectively in one-to-one correspondence; wherein,
the bonding pads arranged on the front side of the FPCB are electrically connected with each voice coil unit respectively, and series-parallel connection relations among the voice coil units are controlled through the bonding pads arranged on the back side of the FPCB.
In addition, preferably, the voice coil unit is electrically connected in a manner that:
respectively connecting the voice coil units on the same straight line side in series to form two branches, and then connecting the two branches in parallel; or,
two voice coils positioned at the same diagonal corner are respectively connected in series to form two branches, and then the two branches are connected in parallel.
Further, it is preferable that the edge of the annular side wall is provided with a fixing hole for fixing the speaker and the electronic device.
Further, it is preferable that the ball top has a rigid structure, a honeycomb structure, or a foam structure.
According to the technical scheme, the flat plate type woofer loudspeaker can achieve the following beneficial effects:
1) the four driving units are respectively arranged at the four corners of the top of the ball of the vibrating diaphragm, the structure adopts the small-sized voice coil unit and the magnetic circuit unit to drive the vibrating diaphragm of the large-sized bass loudspeaker, the thickness of the bass loudspeaker can be reduced, the size of the magnet can be saved, the cost can be reduced, the sensitivity of the loudspeaker can be improved, and the structure that the driving units are arranged at the corners is favorable for driving the vibrating diaphragm of the bass loudspeaker in a balanced manner;
2) the shell is made of aluminum alloy materials, and the aluminum alloy materials are high in strength and high in stability;
3) the voice coil and the external Circuit are connected by adopting an FPCB (Flexible Printed Circuit Board, FPCB or FPC for short), so that the space can be saved, the lead of the voice coil combined with the vibrating diaphragm is directly welded with a bonding pad of the FPCB, and when the vibrating diaphragm vibrates, the voice coil, the FPCB and the lead welding part synchronously vibrate along with the vibrating diaphragm, so that the lead of the voice coil caused by the vibration of the vibrating diaphragm can be prevented from being broken;
4) the both ends of FPCB are connected to the one side that the voice coil loudspeaker voice coil was kept away from to the mounting surface through the phonate hole of marginal portion to the width of connecting portion is narrower, is the arc structure and buckles, the resistance that causes the vibrating diaphragm when can avoiding the vibrating diaphragm vibration.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of a flat plate type woofer having six driving units according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an FPCB according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating an installation of an FPCB in a flat woofer according to an embodiment of the present invention;
FIG. 4-1 is a schematic diagram of six voice coil connections according to an embodiment of the present invention;
FIG. 4-2 is a schematic view of six voice coil connections according to another embodiment of the present invention;
FIG. 5-1 is a schematic diagram of four voice coil connections according to an embodiment of the present invention;
fig. 5-2 is a schematic diagram of four voice coil connections according to another embodiment of the present invention.
Wherein the reference numerals include: ball top 1, corrugated portion 2, housing 3, mounting hole 4, drive unit 5, FPCB6, center sound hole 7, edge sound hole 8, mounting plane 9, annular side wall 10, fixing hole 11, pad 12, and circuit 13.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The woofer needs a larger vibrating diaphragm area, and in order to provide enough drive for the vibrating diaphragm with a large area on the basis of limiting the sizes of the voice coils and the magnets, the invention starts from the angle of dispersedly arranging a plurality of mutually independent drive units, so that the vibrating diaphragm is driven by the plurality of independent voice coils, and each voice coil corresponds to an independent magnetic circuit unit, thereby realizing the miniaturization of the woofer by a more reasonable and effective drive unit arrangement structure.
Fig. 1 is a schematic structural view of a flat plate type woofer having six driving units according to an embodiment of the present invention. As shown in fig. 1, the flat plate type woofer provided by the present invention includes a diaphragm, six mutually independent driving units 5, and a housing 3.
The vibrating diaphragm is of a rectangular structure, can be of a rectangular structure, and can also be of a square structure. The diaphragm comprises a ball top 1 in the central position of the diaphragm and a corrugated portion 2 in the edge position of the diaphragm.
The ball top 1 of the diaphragm is a rigid structure which can improve the acoustic properties of the diaphragm. In the implementation of the present invention, the dome portion 1 of the diaphragm may also be a honeycomb structure or a foam structure, and these two structures can also improve the acoustic characteristics of the diaphragm. The bending part 2 of the diaphragm can be made of PU (Polyurethane) or silicon rubber.
The drive unit 5 includes voice coil units each corresponding to each magnetic circuit unit, and magnetic circuit units. The flat plate type bass loudspeaker provided by the invention is at least provided with more than four driving units, if the flat plate type bass loudspeaker comprises four driving units, the four driving units 5 can be respectively arranged at four corners of the ball top part 1 of the vibrating diaphragm; if the flat-panel woofer comprises more than four driving units, the voice coil units of the driving units can be uniformly arranged at the peripheral position of the ball top 1 of the vibrating diaphragm, and can also be arranged on the ball top in a scattered irregular arrangement mode to avoid resonance.
In the embodiment of fig. 1, six driving units 5 of the flat-panel woofer are provided, wherein four voice coil units are respectively combined at four corners of the top of the sphere of the diaphragm, and the other voice coil units are respectively arranged on one or two pairs of edges of the rectangular sphere top, preferably, are not arranged on the same straight line with the two voice coil units on the edge and are not arranged uniformly, so as to avoid resonance of the diaphragm.
The driving unit includes a voice coil unit and a magnetic circuit unit. The voice coil unit comprises a voice coil, a voice coil framework and a centering support piece, and the magnetic circuit unit comprises a washer, a magnet and T iron. The voice coil is fixed with the vibrating diaphragm in a combined mode, and the voice coil framework is used for supporting the voice coil to enable the voice coil to be located at a proper position in the magnetic gap. The centering support is used for fixing the voice coil and preventing the voice coil from polarizing in the horizontal direction.
In the embodiment of the invention, the driving unit is of a circular structure, and the corresponding voice coil unit and the corresponding magnetic circuit unit are also of a circular structure; compared with a voice coil with a long strip structure, the structural design can enable the diaphragm 18 to be stressed more uniformly. The washer and the T iron are both magnetic structures and are used for correcting magnetic lines; the magnetic gap formed between the magnet and the T-iron is used to accommodate the voice coil.
In the six-driving-unit embodiment of the present invention, four driving units are respectively disposed on the diaphragm at positions corresponding to the top 1 of the ball, which is favorable for stable combination of the voice coil of the driving unit and the diaphragm, and are preferably located at four corners of the top 1 of the ball, so that the diaphragm can be driven in a balanced manner. The structure adopts the small-sized voice coil unit and the magnetic circuit unit to drive the vibrating diaphragm of the large-sized woofer, so that the thickness of the woofer can be reduced, the size of the magnet can be saved, the cost is reduced, and the sensitivity of the woofer is improved. The six driving units act on the vibrating diaphragm, the driving force is uniform, and enough driving power can be ensured on the basis of reducing the volume of the driving units, so that the product is thinner, and the flat plate type bass loudspeaker can be used for electronic devices with higher power, such as liquid crystal televisions and the like.
The housing 3 comprises a mounting plane 9 and an annular side wall 10 around the mounting plane, and a fixing hole 11 is further formed in the edge of the annular side wall, and the fixing hole 11 is used for fixedly combining the flat-panel woofer and the electronic device. In the embodiment shown in fig. 1, the annular side wall has an extension portion on the periphery thereof, and fixing holes for fixing the speaker are uniformly provided on the extension portion.
Wherein, the shell 3 adopts aluminum alloy material, and the aluminum alloy material has higher strength and high stability. Mounting holes 4 corresponding to the number and positions of the driving units and sound holes penetrating through the mounting plane are formed in the mounting plane 9 of the housing 3, a limiting part for limiting the centering disk is arranged on the mounting hole 4, and the mounting hole 4 can be used for accommodating the voice coil unit and mounting and fixing the magnetic circuit unit. The sound outlet holes comprise two circular center sound outlet holes 7 and four strip-shaped edge sound outlet holes 8, the center sound outlet holes 7 are arranged between every four adjacent mounting holes 4, and the four edge sound outlet holes 8 are respectively arranged between the four sides of the annular side wall and the mounting holes 4. In the embodiment shown in fig. 1, the edge sound outlet 7 is elongated and the central sound outlet 8 is circular. Of course, the edge sound holes may also be designed to be circular or other irregular shapes, depending on the requirements of the speaker application.
The upper side surface of the annular side wall 10 is fixedly connected with the edge portion 2 of the diaphragm.
The flat plate type woofer further includes an FPCB6 communicating an internal circuit and an external circuit of the speaker.
Fig. 2 is a schematic structural view of an FPCB according to an embodiment of the present invention, and as shown in fig. 2, the FPCB is in a bar shape and includes two independent portions, and each portion is electrically connected to two adjacent voice coil units. The end of the FPCB is provided with a circuit 13 which is connected with an external circuit; the intermediate portion of the FPCB is provided with a plurality of pads 12, and the voice coil unit is electrically connected to the pads 12 provided at the portion of the FPCB fixed to the diaphragm through voice coil leads. The FPCB6 is partially fixed to the diaphragm at a side where the voice coil unit is coupled, and a portion of the FPCB6 not fixed to the diaphragm extends through the sound outlet hole to a side of the mounting plane away from the diaphragm. Namely: the middle part of FPCB6 is fixed on the diaphragm and is combined with one side of voice coil unit, and both ends extend to one side of mounting plane far away from the diaphragm through edge sound outlet holes. The two end parts of the FPCB are of arc structures and are bent to the positions parallel to the installation plane. The structure of the FPCB can make full use of the internal space of the woofer, and prevent disconnection due to the drawing of the lead wire in the vibration process of the diaphragm.
Fig. 3 is a schematic view showing the installation of the FPCB in the flat woofer according to the embodiment of the present invention, as shown in fig. 3, the FPCB6 is installed at the middle portion thereof on the diaphragm at the side where the voice coil unit is combined, and the voice coil unit is electrically connected to the pad 12 provided at the portion where the FPCB6 is fixed to the diaphragm through the voice coil lead 14. Both end portions of the FPCB6 extend through the sound outlet holes to the side of the mounting plane away from the diaphragm. Both ends of the FPCB6 are bent in an arc structure to a position parallel to the mounting plane.
The front and back surfaces of the FPCB6 are provided with pads 12, and the pads arranged on the front and back surfaces of the FPCB6 are respectively in one-to-one correspondence; wherein pads disposed on a front side of the FPCB6 are electrically connected to each of the voice coil units, respectively, and a series-parallel relationship between the voice coil units is controlled by pads 12 disposed on a rear side of the FPCB 6.
The electrical connection of the six voice coil units will be described in the following.
Fig. 4-1 is a schematic diagram of six voice coil connections according to an embodiment of the invention. As shown in fig. 4-1, three voice coil units located on the same straight line side are respectively connected in series to form two branches, and then the two branches are connected in parallel.
Fig. 4-2 is a schematic diagram of six voice coil connections according to another embodiment of the present invention. As shown in fig. 4-2, two voice coils located at the corner of the same straight line and the voice coil located in the middle of the opposite line are respectively connected in series to form two branches, and then the two branches are connected in parallel.
A flat woofer having four voice coil units is also possible in the embodiment of the present invention, and there are generally two ways of electrically connecting the four voice coil units, as shown in fig. 5-1 and 5-2.
Fig. 5-1 is a schematic diagram of four voice coil connections according to an embodiment of the invention. As shown in fig. 5-1, two voice coil units located on the same straight line side are respectively connected in series to form two branches, and then the two branches are connected in parallel.
Fig. 5-2 is a schematic diagram of four voice coil connections according to another embodiment of the present invention. As shown in fig. 5-2, two voice coils located at the same diagonal corner are connected in series into two branches, and then the two branches are connected.
According to the connection manner of the voice coil units shown in fig. 4-2 and 5-2, if one or more driving units on one branch circuit have problems, the flat-panel woofer can also work normally, because another branch circuit is arranged around the diaphragm in uniform distribution, so that the diaphragm is stressed uniformly. Simultaneously, because FPCB's both ends are thinner, have the buckling of certain radian moreover, consequently can reduce the resistance to the vibrating diaphragm to the minimum when vibrating diaphragm vibration to make the vibrating diaphragm can the atress even.
Because the invention adopts more driving units, in the embodiment of the invention, the FPCB is adopted to electrically connect the driving unit and the external circuit, compared with the common wire connection mode, the FPCB can simplify the manufacturing process, save the internal space of the loudspeaker and improve the stability of the loudspeaker.
It can be seen from the above embodiments that, in the flat plate type woofer provided by the present invention, at least four driving units are arranged at four corners of the top of the ball of the diaphragm, and in addition, two or even more driving units can be arranged on the long axis. In addition, the driving units on the same side of the long shaft are not arranged on the same straight line, the distance ratio is not integer ratio, the distance between the two driving units in the middle position on the opposite side is smaller than the distance between the two driving units at the corner part, and the arrangement structure acts on the vibrating diaphragm, so that the defect caused by resonance of the vibrating diaphragm can be avoided; meanwhile, the driving force is uniform, the vibrating diaphragm can be driven in a balanced manner, the vibrating diaphragm can act on an electronic device with higher power, and the flat plate type bass loudspeaker is lighter and thinner in structure; the shell is made of aluminum alloy materials, and the aluminum alloy materials are high in strength and high in stability; adopt FPCB to connect voice coil loudspeaker voice coil and outer circuit, can save space, the lead wire direct connection of the voice coil loudspeaker voice coil that combines with the vibrating diaphragm moreover with FPCB's pad welding, can avoid the broken string of the voice coil loudspeaker voice coil lead wire that causes because the vibration of vibrating diaphragm.
The flat type woofer according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the flat woofer of the present invention as set forth above without departing from the spirit of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (10)
1. A flat plate type bass loudspeaker comprises a vibrating diaphragm, at least four mutually independent driving units and a shell for accommodating and fixing the vibrating diaphragm and the driving units; wherein,
the driving unit comprises independent voice coil units and magnetic circuit units corresponding to the voice coil units, the voice coil units are attached to the top of the ball of the vibrating diaphragm, the four voice coil units are respectively combined with four corners of the top of the ball of the vibrating diaphragm, and the other voice coil units are respectively arranged on one group or two groups of edges of the top of the ball and are not in the same straight line with the two voice coil units on the edges and are unevenly distributed; and,
the flat plate type bass loudspeaker also comprises an FPCB for communicating an internal circuit and an external circuit of the loudspeaker, and the FPCB is partially fixed on one side, attached to the voice coil unit, of the vibrating diaphragm; wherein,
the voice coil unit is in through voice coil loudspeaker voice coil lead wire and setting the FPCB is fixed the pad electricity of the part on the vibrating diaphragm is connected.
2. The flat plate type woofer speaker according to claim 1,
the vibrating diaphragm is rectangular and comprises a rigid ball top part positioned at the center and a folded ring part positioned at the edge;
and a voice coil unit is respectively attached and fixed at four corners of the top of the ball.
3. The flat plate type woofer speaker according to claim 2,
the shell is provided with a mounting hole for accommodating and fixing the magnetic circuit unit, and the upper side surface of the shell is fixedly combined with the edge of the folded ring part.
4. The flat plate type woofer speaker according to claim 3 wherein the housing includes a mounting plane and an annular side wall around the mounting plane, a sound outlet hole penetrating the mounting plane being provided on the mounting plane;
the part of the FPCB, which is not fixed on the diaphragm, extends to one side of the mounting plane far away from the diaphragm through the sound outlet hole.
5. The flat plate type woofer speaker according to claim 4,
the FPCB is in a strip shape;
the sound outlet holes comprise a central sound outlet hole and an edge sound outlet hole which are respectively arranged at the central position and the edge position of the mounting plane;
the middle part of FPCB is fixed laminate on the vibrating diaphragm one side of voice coil loudspeaker voice coil unit, both ends pass through edge phonate hole extends to mounting plane keeps away from one side of vibrating diaphragm.
6. The flat plate type woofer speaker according to claim 5,
the two end parts of the FPCB are of arc structures and are bent to the positions parallel to the installation plane.
7. The flat plate type woofer speaker according to any one of claims 1 to 6 wherein,
the front surface and the back surface of the FPCB are provided with bonding pads, and the bonding pads arranged on the front surface and the back surface of the FPCB are respectively in one-to-one correspondence; wherein,
the setting is in the positive pad of FPCB is connected with each voice coil unit electricity respectively, and, through setting up the pad control of FPCB reverse side the series-parallel relation between the voice coil unit.
8. The flat plate type woofer speaker according to claim 7,
the electric connection mode of the voice coil unit is as follows:
respectively connecting the voice coil units on the same straight line side in series to form two branches, and then connecting the two branches in parallel; or,
two voice coils positioned at the same diagonal corner are respectively connected in series to form two branches, and then the two branches are connected in parallel.
9. The flat plate type woofer speaker according to any one of claims 4 to 6 wherein,
the edge of the annular side wall is provided with a fixing hole for fixing the loudspeaker and the electronic device.
10. The flat plate type woofer speaker according to claim 7,
the top of the ball is of a honeycomb structure or a foam structure.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166950.7A CN103260116B (en) | 2013-05-08 | 2013-05-08 | Flat woofer |
| US14/889,103 US9648424B2 (en) | 2013-05-08 | 2013-05-31 | Tablet woofer |
| KR1020157034780A KR101707085B1 (en) | 2013-05-08 | 2013-05-31 | Tablet Woofer |
| PCT/CN2013/076560 WO2014180016A1 (en) | 2013-05-08 | 2013-05-31 | Tablet woofer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166950.7A CN103260116B (en) | 2013-05-08 | 2013-05-08 | Flat woofer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103260116A CN103260116A (en) | 2013-08-21 |
| CN103260116B true CN103260116B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310166950.7A Active CN103260116B (en) | 2013-05-08 | 2013-05-08 | Flat woofer |
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| Country | Link |
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| CN (1) | CN103260116B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180014A1 (en) | 2013-05-08 | 2014-11-13 | 歌尔声学股份有限公司 | Tablet woofer and electronic device using same |
| CN106804020B (en) * | 2017-01-20 | 2020-06-19 | 瑞声科技（南京）有限公司 | Vibration sounding device |
| CN106817660B (en) * | 2017-03-31 | 2019-09-17 | 奇酷互联网络科技（深圳）有限公司 | A kind of sounding device, sounding control method and portable electronic device |
| CN108513211A (en) * | 2018-07-03 | 2018-09-07 | 顾科 | A kind of cylindrical wave bar shaped Coupler Module |
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|---|---|---|---|---|
| CN101472211A (en) * | 2007-11-02 | 2009-07-01 | 安桥株式会社 | Voice coil assembly, loudspeaker using the same, and method for producing the same |
| CN101860783A (en) * | 2009-10-13 | 2010-10-13 | 东莞凡振工业电子有限公司 | Thin-type loudspeaker |
| CN201839427U (en) * | 2010-06-21 | 2011-05-18 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
-
2013
- 2013-05-08 CN CN201310166950.7A patent/CN103260116B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101472211A (en) * | 2007-11-02 | 2009-07-01 | 安桥株式会社 | Voice coil assembly, loudspeaker using the same, and method for producing the same |
| CN101860783A (en) * | 2009-10-13 | 2010-10-13 | 东莞凡振工业电子有限公司 | Thin-type loudspeaker |
| CN201839427U (en) * | 2010-06-21 | 2011-05-18 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |