CN201601821U - Mini-type moving-ring acoustic generator - Google Patents
Mini-type moving-ring acoustic generator Download PDFInfo
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- CN201601821U CN201601821U CN2010201161794U CN201020116179U CN201601821U CN 201601821 U CN201601821 U CN 201601821U CN 2010201161794 U CN2010201161794 U CN 2010201161794U CN 201020116179 U CN201020116179 U CN 201020116179U CN 201601821 U CN201601821 U CN 201601821U
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- vibrating diaphragm
- acoustical generator
- coil type
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- miniature moving
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Abstract
The utility model provides a mini-type moving-ring acoustic generator, which comprises an elongated outer casing, a front cover mounted above the outer casing, a diaphragm mounted between the outer casing and the front cover, a voice coil combined on the lower side of the central portion of the diaphragm, a magnetic circuit system and a hearing-aid voice coil mounted between the outer casing and the front cover. The front cover seals all components of the mini-type moving-ring acoustic generator inside; the magnetic circuit system includes a magnetic conducting plate, a magnet and a spacer which are sequentially and fixedly mounted inside the outer casing, a through hole is respectively disposed at the centers of the magnet and the spacer, a magnetic gap of the mini-type moving-ring acoustic generator is formed by the magnetic conducting plate, the magnet and the spacer, and the voice coil is disposed inside the magnetic gap; and the hearing-aid voice coil is combined with the outer peripheral edge of one side face of the diaphragm. Since the hearing-aid voice coil does not occupy vibration space of the diaphragm, the mini-type moving-ring acoustic generator has the advantages of improved sensitivity, reduced product height, and favor in miniaturization of product design.
Description
Technical field
The utility model relates to a kind of miniature moving-coil type acoustical generator, more particularly, relates to a kind of miniature moving-coil type acoustical generator miniaturization, the band listening help circle that helps realizing.
Background technology
Along with the development in portable consumer electronic product market, electronic units such as miniature moving-coil type acoustical generator have obtained using widely.In product in the past, more clearly hear sound in order to help the Hearing Impaired, generally in the miniature moving-coil type acoustical generator, be provided with listening help circle, make itself and hearing aids produce induction and voice emplifying.
Fig. 8 is the cutaway view of the miniature moving-coil type acoustical generator of band listening help circle of the prior art.Fig. 8 shows a kind of miniature moving-coil type acoustical generator that has the rectangle structure of listening help circle, and it comprises auxiliary system, magnetic circuit system and vibrational system.Described auxiliary system comprises protecgulum 11, shell 12 and gasket ring 13, wherein, is provided with groove in shell 12, is used to install described magnetic circuit system and vibrational system, and protecgulum 11 is installed on the shell 12, and described magnetic circuit system and vibrational system are encapsulated.In addition, gasket ring 13 is installed between described protecgulum 11 and the shell 12.Described magnetic circuit system comprises pad 31, magnet 32 and magnetic conductive board 33, wherein, magnetic conductive board 33, magnet 32 and pad 31 embed in the groove in the shell 12 according to the order from top to bottom shown in the figure and are stacked, and, magnet 32 is surrounded fixing by the interior groove that contracts, thereby forms the annular magnetic gap.Described vibrational system comprises vibrating diaphragm 21 and the voice coil loudspeaker voice coil 22 that combines with vibrating diaphragm 21, and wherein, voice coil loudspeaker voice coil 22 is in the described magnetic gap.At this, described auxiliary system (protecgulum 11, shell 12, ring 13) and magnetic circuit system (pad 31, magnet 32 and magnetic conductive board 33) have just formed the operatic tunes of miniature moving-coil type acoustical generator, the operatic tunes and back these two operatic tunes of the operatic tunes before described vibrational system (vibrating diaphragm 21, voice coil loudspeaker voice coil 22) then is divided into this operatic tunes.
In addition, the gasket ring 13 of described auxiliary system combines with the periphery of vibrating diaphragm 21, thereby makes vibrating diaphragm 21 be convenient to install.In addition, described auxiliary system also comprises listening help circle 4 and wiring board 5, wherein, in the preceding operatic tunes of listening help circle 4 between protecgulum 11 and vibrating diaphragm 21, and on the lower surface attached to protecgulum 11, can help the Hearing Impaired to hear the sound of amplification by equipment such as hearing aidss, wiring board 5 is arranged on the bottom of shell 12, is used for being electrically connected with lead-in wire (not shown) and external electronic circuits on voice coil loudspeaker voice coil 22, the listening help circle 4.
In this miniature moving-coil type acoustical generator in the past, listening help circle 4 is arranged on the protecgulum 11 of vibrating diaphragm 21 tops and the operatic tunes before being positioned at, so occupied the oscillation space of vibrating diaphragm 21, can influence the acoustic efficiency of vibrating diaphragm 21.For fear of this problem, need to increase the height of operatic tunes sidewall to guarantee enough oscillation spaces of vibrating diaphragm 21.But increase the increase that operatic tunes sidewall height can cause the product height, be unfavorable for the miniaturization of miniature moving-coil type acoustical generator.So, be necessary above-mentioned miniature moving-coil type acoustical generator with traditional structure is improved the problem that exists with solution.
The utility model content
The utility model is to make in order to solve the above-mentioned technical problem that exists in the prior art, its purpose is to provide a kind of miniature moving-coil type acoustical generator with listening help circle, can avoid listening help circle to occupy the oscillation space of vibrating diaphragm, reduce the height of product simultaneously, to realize the miniaturization of miniature moving-coil type acoustical generator.
To achieve these goals, provide a kind of miniature moving-coil type acoustical generator, comprising: shell is elongate in shape; Protecgulum is installed in the top of described shell, and each parts of described miniature moving-coil type acoustical generator are enclosed in inside; Vibrating diaphragm is installed between described shell and the described protecgulum; Voice coil loudspeaker voice coil is combined in the downside of the central portion of described vibrating diaphragm; Magnetic circuit system, it comprises magnetic conductive board, magnet and the pad that is fixedly mounted on successively in the described shell, is provided with through hole in the central authorities of described magnet and pad, and described magnetic conductive board, magnet and pad form the magnetic gap of described miniature moving-coil type acoustical generator, and described voice coil loudspeaker voice coil is positioned at described magnetic gap; And listening help circle, be installed between described shell and the described protecgulum, and combine with the neighboring of a side of described vibrating diaphragm.
In addition, preferred construction is, also comprises the gasket ring of annular, is combined in accordingly on the another side of described vibrating diaphragm with described listening help circle.
In addition, preferred construction is, described gasket ring is between described vibrating diaphragm and described protecgulum, and described listening help circle is between described vibrating diaphragm and described shell.
In addition, preferred construction is, described gasket ring is between described vibrating diaphragm and described shell, and described listening help circle is between described vibrating diaphragm and described protecgulum.
In addition, preferred construction is, described vibrating diaphragm is installed on the convex of neighboring of described shell, and described listening help circle is combined in the neighboring of the upper surface of described vibrating diaphragm.
Moreover the utility model provides another miniature moving-coil type acoustical generator, comprising: shell, be elongate in shape, and possess convex in the neighboring; Protecgulum is installed in the top of described shell, and each parts of described miniature moving-coil type acoustical generator are enclosed in inside; Vibrating diaphragm is installed between described shell and the described protecgulum; Voice coil loudspeaker voice coil is combined in the downside of the central portion of described vibrating diaphragm; Magnetic circuit system, it comprises magnetic conductive board, magnet and the pad that is fixedly mounted on successively in the described shell, is provided with through hole in the central authorities of described magnet and pad, and described magnetic conductive board, magnet and pad form the magnetic gap of described miniature moving-coil type acoustical generator, and described voice coil loudspeaker voice coil is positioned at described magnetic gap; And listening help circle, be installed between described vibrating diaphragm and the described shell, and be positioned at the inboard of the described convex of described shell.
In addition, preferred construction is, described listening help circle is provided with in abutting connection with the medial surface of the described convex of described shell.
In addition, preferred construction is, described listening help circle with the projection central portion of the coupling part of described vibrating diaphragm accordingly, be arranged on the surface of described shell under the described coupling part of described vibrating diaphragm and/or described pad.
Owing to adopted technique scheme, just avoided listening help circle to occupy the oscillation space of vibrating diaphragm, reduced the height of product, thereby helped the miniaturization Design of miniature moving-coil type acoustical generator.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of first embodiment of the present utility model;
Fig. 2 is the cutaway view of the vibrational system in this miniature moving-coil type acoustical generator;
Fig. 3 is the cutaway view of the internal structure of this miniature moving-coil type acoustical generator of expression;
Fig. 4 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of second embodiment of the present utility model;
Fig. 5 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of the 3rd embodiment of the present utility model;
Fig. 6 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of the 4th embodiment of the present utility model;
Fig. 7 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of the 5th embodiment of the present utility model;
Fig. 8 is the cutaway view of the miniature moving-coil type acoustical generator of band listening help circle of the prior art.
Embodiment
Below, describe various embodiment of the present utility model in conjunction with the accompanying drawings in detail.
In the following detailed description, only some one exemplary embodiment of the present utility model has been described by the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under the situation that does not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used to limit the protection range of claim.In addition, in this manual, identical Reference numeral is represented identical part.
[first embodiment]
Fig. 1 is the three-dimensional exploded view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of first embodiment of the present utility model, Fig. 2 is the cutaway view of the vibrational system in this miniature moving-coil type acoustical generator, and Fig. 3 is the cutaway view of the internal structure of this miniature moving-coil type acoustical generator of expression.
As shown in Figure 1 to Figure 3, the miniature moving-coil type acoustical generator of the band listening help circle that relates to of first embodiment of the present utility model comprises auxiliary system, magnetic circuit system and vibrational system.
Wherein, described auxiliary system comprises protecgulum 11, shell 12 and gasket ring 13, wherein, the understructure that shell 12 is to use for example resin, plastics etc. to make with cuboid profile, be provided with annular groove in the middle so that described magnetic circuit system and vibrational system to be installed, near its edge and edge, be provided with out wire casing and phonate hole; Protecgulum 11 is to be made and shape and shell 12 corresponding members by for example metal material, which is provided with phonate hole, is used to make sound to send, and there is braced wing its side, is used to be supported on shell 12; Protecgulum 11 can cover on shell 12, and parts such as described magnetic circuit system and vibrational system are enclosed in inside; Described gasket ring 13 is arranged between protecgulum 11 and the shell 12.
Described magnetic circuit system comprises pad 31, magnet 32 and magnetic conductive board 33, and wherein, magnet 32 has the shape of cutting edge in the endless belt, and pad 31 has and magnet 32 corresponding shapes, and magnetic conductive board 33 is circular, and possesses circular convex at the middle part; Magnetic conductive board 33, magnet 32 and pad 31 are embedded into according to the order from top to bottom shown in the figure in the groove of shell 12 and are stacked, and magnet 32 surround by the groove that contracts in the shell 12 fixing, thereby form the annular magnetic gap.In the present embodiment, this magnetic circuit system for example is the external magnetic circuit structure.Described vibrational system comprises the voice coil loudspeaker voice coil 22 of vibrating diaphragm 21 and hollow cylindrical, and wherein, voice coil loudspeaker voice coil 22 is installed in the central portion of the lower surface of vibrating diaphragm 21, and voice coil loudspeaker voice coil 22 is in the described magnetic gap.
And, the bound fraction 213 of the inboard that with reference to Fig. 2 as can be known, vibrating diaphragm 21 comprises the standing part 211, the coupling part 212 that is positioned at standing part 211 inboards that are positioned at periphery, be positioned at coupling part 212 and the core that is positioned at bound fraction 213 inboards.Wherein, be provided with gasket ring 13 annular, that make by for example copper etc. at the upper surface of the standing part 211 of described vibrating diaphragm 21, lower surface at described bound fraction 213 is equipped with voice coil loudspeaker voice coil 22, can drive vibrating diaphragm and sound along the vertical direction vibration when voice coil loudspeaker voice coil 22 is stressed in aforementioned magnetic gap.Moreover coupling part 212 is to a side (being a side that makes progress among Fig. 2) projection, and standing part 211 and bound fraction 213 are coupled together.Described core forms domed shape towards the direction projection identical with the projection direction of described coupling part 212.
In addition, described auxiliary system also comprises listening help circle 4a and wiring board 5.Wherein, listening help circle 4a can help the Hearing Impaired to hear the sound of amplification by equipment such as hearing aidss, and it has loop configuration, is arranged on the below of the standing part 211 of described vibrating diaphragm 21 accordingly with described gasket ring 13.In addition, wiring board 5 is arranged on the bottom of shell 12, is used for being electrically connected with lead-in wire (not shown) and external electronic circuits (not shown) on voice coil loudspeaker voice coil 22, the listening help circle 4.
At this, protecgulum 11 becomes the operatic tunes top of miniature moving-coil type acoustical generator, and the part of magnetic circuit system and shell 12 becomes the bottom of this operatic tunes, the sidewall that the gasket ring 13 of annular and listening help circle 4a constitute this operatic tunes.Moreover the operatic tunes and back these two operatic tunes of the operatic tunes promptly became the preceding operatic tunes between vibrating diaphragm 21 and the protecgulum 11 before vibrating diaphragm 21 was divided into this operatic tunes, became the back operatic tunes between the part of vibrating diaphragm 21 and magnetic circuit system and shell 12.In addition, as known technology, on the preceding operatic tunes and the back operatic tunes, all be provided with phonate hole.
In aforesaid present embodiment, the listening help circle 4a of annular constitutes the sidewall of the back operatic tunes of miniature moving-coil type acoustical generator, therefore, listening help circle 4a can not occupy the oscillation space of vibrating diaphragm 21, also can not dwindle the swept area of vibrating diaphragm 21, so just improve the sensitivity of miniature moving-coil type acoustical generator, reduced the height of its product, thereby helped the miniaturization of its product design.
[second embodiment]
Below, the structure of the miniature moving-coil type acoustical generator of the band listening help circle that second embodiment relates to is described with reference to Fig. 4.With reference to Fig. 4 as can be known, the structure of the miniature moving-coil type acoustical generator of present embodiment and the structure difference of first embodiment are, in the present embodiment, gasket ring 13 is arranged between the lower surface and shell 12 of standing part 211 of vibrating diaphragm 21, listening help circle 4a is set on the upper surface of standing part 211 of vibrating diaphragm 21, at this, listening help circle 4a and gasket ring 13 also constitute the operatic tunes sidewall of miniature moving-coil type acoustical generator.In addition, other structures of present embodiment are identical with described first embodiment, so omit its description.
According to said structure, because listening help circle 4a is arranged on the edge of miniature moving-coil type acoustical generator as operatic tunes sidewall, can not occupy the oscillation space of vibrating diaphragm 21 equally, also can not dwindle the swept area of vibrating diaphragm 21, so just improved the sensitivity of miniature moving-coil type acoustical generator, reduce the height of its product, thereby helped the miniaturization of its product design.
[the 3rd embodiment]
Fig. 5 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of the 3rd embodiment of the present utility model.The structure of the miniature moving-coil type acoustical generator of present embodiment and the structure difference of second embodiment are, as shown in Figure 5, the gasket ring 13 of annular is not set in the present embodiment, but the standing part 211 of vibrating diaphragm 21 directly is combined on the convex of neighboring of shell 12.At this, the convex of the neighboring of listening help circle 4a and shell 12 constitutes the operatic tunes sidewall of miniature moving-coil type acoustical generator.
In addition, in the present embodiment, also can in advance listening help circle 4a be combined in the upper surface of the standing part 211 of vibrating diaphragm 21,, thereby make vibrating diaphragm 21 be easy to assembling with the effect of replacement gasket ring 13.
According to said structure, because listening help circle 4a is arranged on the edge of miniature moving-coil type acoustical generator as operatic tunes sidewall, can not occupy the oscillation space of vibrating diaphragm 21, also can not dwindle the swept area of vibrating diaphragm 21, so just improved the sensitivity of miniature moving-coil type acoustical generator, reduce the height of its product, thereby helped the miniaturization of its product design.
[the 4th embodiment]
Fig. 6 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of the 4th embodiment of the present utility model.The structure of the miniature moving-coil type acoustical generator of present embodiment and the structure difference of first embodiment are, listening help circle 4b is not positioned at the below of the standing part 211 of vibrating diaphragm 21, but the standing part 211 of vibrating diaphragm 21 directly is combined on the convex of neighboring of shell 12, the listening help circle 4b of annular is provided with in abutting connection with the medial surface of the described convex of described shell 12.In this structure, can design the size of listening help circle 4b according to the side wall dimensions of the described operatic tunes, make listening help circle 4b be convenient to fixing and assembling.
According to said structure, because listening help circle 4b is arranged on the interior outer circumferential side of the back operatic tunes of miniature moving-coil type acoustical generator, can not occupy the oscillation space of vibrating diaphragm 21, also can not dwindle the swept area of vibrating diaphragm 21, improved the sensitivity of miniature moving-coil type acoustical generator equally, reduce the height of its product, thereby helped the miniaturization of its product design.
[the 5th embodiment]
Fig. 7 is the cutaway view of the miniature moving-coil type acoustical generator of the band listening help circle that relates to of the 5th embodiment of the present utility model.The structure difference of the structure of the miniature moving-coil type acoustical generator of present embodiment and the 4th embodiment shown in Figure 6 is, in the present embodiment, with the projection central portion of the coupling part 212 of vibrating diaphragm 21 accordingly, with listening help circle 4b be arranged on this coupling part 212 under shell 12 and/or the surface of pad 31 on.Adopt this design, can avoid listening help circle 4b to occupy the oscillation space of vibrating diaphragm 21 to greatest extent, thereby reduce the height of miniature moving-coil type acoustical generator product to greatest extent.
In the utility model, the miniature moving-coil type acoustical generator also can adopt well-known internal magnetic circuit structure or two magnetic route structure.In addition, protecgulum 11 also can be made by plastics etc., and shell 12 also can have square contour, and wiring board 5 also can replace with other electric connecting parts such as flexure strips.Pad 31 can be not corresponding mutually with the shape of magnet 32 yet, but have different structures.In addition, by changing the structure and the shape of magnetic conductive board, magnet and pad, what can make described magnetic gap is shaped as annular, oval ring or runway annular.In addition, the coupling part 212 of vibrating diaphragm 21 and core also can be for flat shapes or to the structure of lower recess.In addition, also can improvement that carry out other equivalence be set etc. to the position of listening help circle 4a according to the structure of miniature moving-coil type acoustical generator.These variations are included within claims of the present utility model.In addition, under the situation that does not depart from the determined spirit and scope of the present utility model of appended claims book, can carry out various corrections, combination to each embodiment of the present utility model.
Claims (10)
1. a miniature moving-coil type acoustical generator is characterized in that, comprising:
Shell is elongate in shape;
Protecgulum is installed in the top of described shell, and each parts of described miniature moving-coil type acoustical generator are enclosed in inside;
Vibrating diaphragm is installed between described shell and the described protecgulum;
Voice coil loudspeaker voice coil is combined in the downside of the central portion of described vibrating diaphragm;
Magnetic circuit system, it comprises magnetic conductive board, magnet and the pad that is fixedly mounted on successively in the described shell, is provided with through hole in the central authorities of described magnet and pad, and described magnetic conductive board, magnet and pad form the magnetic gap of described miniature moving-coil type acoustical generator, and described voice coil loudspeaker voice coil is positioned at described magnetic gap; And
Listening help circle is installed between described shell and the described protecgulum, and combines with the neighboring of a side of described vibrating diaphragm.
2. miniature moving-coil type acoustical generator according to claim 1 is characterized in that, also comprises:
The gasket ring of annular is combined on the another side of described vibrating diaphragm accordingly with described listening help circle.
3. miniature moving-coil type acoustical generator according to claim 2 is characterized in that,
Described gasket ring is between described vibrating diaphragm and described protecgulum, and described listening help circle is between described vibrating diaphragm and described shell.
4. miniature moving-coil type acoustical generator according to claim 2 is characterized in that,
Described gasket ring is between described vibrating diaphragm and described shell, and described listening help circle is between described vibrating diaphragm and described protecgulum.
5. miniature moving-coil type acoustical generator according to claim 1 is characterized in that,
Described vibrating diaphragm is installed on the convex of neighboring of described shell, and described listening help circle is combined in the neighboring of the upper surface of described vibrating diaphragm.
6. a miniature moving-coil type acoustical generator is characterized in that, comprising:
Shell is elongate in shape, possesses convex in the neighboring;
Protecgulum is installed in the top of described shell, and each parts of described miniature moving-coil type acoustical generator are enclosed in inside;
Vibrating diaphragm is installed between described shell and the described protecgulum;
Voice coil loudspeaker voice coil is combined in the downside of the central portion of described vibrating diaphragm;
Magnetic circuit system, it comprises magnetic conductive board, magnet and the pad that is fixedly mounted on successively in the described shell, is provided with through hole in the central authorities of described magnet and pad, and described magnetic conductive board, magnet and pad form the magnetic gap of described miniature moving-coil type acoustical generator, and described voice coil loudspeaker voice coil is positioned at described magnetic gap; And
Listening help circle is installed between described vibrating diaphragm and the described shell, and is positioned at the inboard of the described convex of described shell.
7. miniature moving-coil type acoustical generator according to claim 6 is characterized in that,
Described listening help circle is provided with in abutting connection with the medial surface of the described convex of described shell.
8. miniature moving-coil type acoustical generator according to claim 6 is characterized in that,
Described listening help circle with the projection central portion of the coupling part of described vibrating diaphragm accordingly, be arranged on the surface of described shell under the described coupling part of described vibrating diaphragm and/or described pad.
9. miniature moving-coil type acoustical generator according to claim 6 is characterized in that,
Described magnetic gap be shaped as annular, oval ring or runway annular.
10. miniature moving-coil type acoustical generator according to claim 6 is characterized in that,
Described magnetic circuit system is the external magnetic circuit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201161794U CN201601821U (en) | 2010-02-22 | 2010-02-22 | Mini-type moving-ring acoustic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201161794U CN201601821U (en) | 2010-02-22 | 2010-02-22 | Mini-type moving-ring acoustic generator |
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| Publication Number | Publication Date |
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| CN201601821U true CN201601821U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010201161794U Expired - Lifetime CN201601821U (en) | 2010-02-22 | 2010-02-22 | Mini-type moving-ring acoustic generator |
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| CN (1) | CN201601821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075847A (en) * | 2011-01-04 | 2011-05-25 | 瑞声声学科技(深圳)有限公司 | Method for testing hearing aid function and voice performance of acoustic generator |
| CN104168527A (en) * | 2014-08-26 | 2014-11-26 | 歌尔声学股份有限公司 | Miniature loudspeaker |
| CN112929801A (en) * | 2021-03-04 | 2021-06-08 | 歌尔股份有限公司 | Speaker and electronic apparatus |
-
2010
- 2010-02-22 CN CN2010201161794U patent/CN201601821U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075847A (en) * | 2011-01-04 | 2011-05-25 | 瑞声声学科技(深圳)有限公司 | Method for testing hearing aid function and voice performance of acoustic generator |
| CN102075847B (en) * | 2011-01-04 | 2013-11-20 | 瑞声声学科技(深圳)有限公司 | Method for testing hearing aid function and voice performance of acoustic generator |
| CN104168527A (en) * | 2014-08-26 | 2014-11-26 | 歌尔声学股份有限公司 | Miniature loudspeaker |
| CN104168527B (en) * | 2014-08-26 | 2017-08-18 | 歌尔股份有限公司 | Microspeaker |
| US10111008B2 (en) | 2014-08-26 | 2018-10-23 | Goertek Inc. | Miniature speaker |
| CN112929801A (en) * | 2021-03-04 | 2021-06-08 | 歌尔股份有限公司 | Speaker and electronic apparatus |
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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. |
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Granted publication date: 20101006 |
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| CX01 | Expiry of patent term |