CN201667712U - Moving-coil type electroacoustic transducer - Google Patents
Moving-coil type electroacoustic transducer Download PDFInfo
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- CN201667712U CN201667712U CN2010201669922U CN201020166992U CN201667712U CN 201667712 U CN201667712 U CN 201667712U CN 2010201669922 U CN2010201669922 U CN 2010201669922U CN 201020166992 U CN201020166992 U CN 201020166992U CN 201667712 U CN201667712 U CN 201667712U
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Abstract
The utility model provides a moving-coil type electroacoustic transducer, comprising a vibration system, a magnetic circuit system and casings corresponding to the vibration system and the magnetic circuit system. The vibration system comprises a diaphragm and a voice coil, wherein the diaphragm is formed by the combination of a rigid ball top and a flexible edge. The magnetic circuit system comprises a washer, a magnet and a frame that are combined in a top-down manner. The moving-coil type electroacoustic transducer also comprises a damper which is arranged between the diaphragm and the voice coil and is fixedly installed on the casings. The voice coil is fixed on the damper. The magnetic circuit system is a single magnetic circuit structure formed by a magnet. Compared with the traditional technology, the utility model can effectively improve the defects caused by distortion and other polarizations in the conventional structure. The product quality is enhanced and meanwhile the adoption of the magnetic circuit system with a single magnet by improving the combination positions of the voice coil and the diaphragm makes the moving-coil type sounder assembly process easier, thereby significantly reducing the manufacture cost.
Description
Technical field
The utility model relates to the electroacoustic transducer technical field, specifically, relates to a kind of moving-coil type electro-acoustic conversing device with centring disk and single magnetic circuit system.
Background technology
Along with the development of portable terminal consumer electronics product, a large amount of electro-acoustic transducer device particularly moving-coil type electro-acoustic conversing device has obtained using widely.The operation principle of well-known moving-coil type electro-acoustic conversing device is, the voice coil loudspeaker voice coil that is connected with alternating current is subjected to Lorentz force and makes vibration on the vibrational system generation vertical direction of moving-coil type electro-acoustic conversing device and sounding in magnetic field.
At present, be applied in the moving-coil type electro-acoustic conversing device of electronic components such as LCD TV, known, for the occupied space of the size that reduces electroacoustic transducer, generally it is designed to strip.But the moving-coil type electro-acoustic conversing device of this traditional structure, when electric current flows through the voice coil loudspeaker voice coil of the magnetic gap that is positioned at magnetic circuit system formation, can around voice coil loudspeaker voice coil, produce the variation magnetic field identical with audio signal frequency, the magnetic field that magnetic field that voice coil loudspeaker voice coil produced and magnetic circuit system are produced can produce interaction, make voice coil loudspeaker voice coil produce the skew that departs from the vertical direction, simultaneously since voice coil loudspeaker voice coil be connected with vibrating diaphragm and produce transmission, cause the vibration imbalance of the moving-coil type electro-acoustic conversing device vibrating diaphragm of this strip especially easily, it is bad to produce distortion and distortion etc., makes the vibrational system job insecurity.
In further improvement to the moving-coil type electro-acoustic conversing device of above-mentioned traditional structure, open day is that on 02 03rd, 2010 Korean Patent KR1020100011199 discloses a kind of passing through between vibrating diaphragm and voice coil loudspeaker voice coil in conjunction with centring disk, and the design that adopts at least two magnetic circuit unit to drive as moving-coil type electro-acoustic conversing device, though polarization, vibrating diaphragm distortion and distortion etc. that this design has avoided the moving-coil type acoustical generator to exist to a certain extent are bad, but the design of a plurality of magnetic circuit unit of this employing, packaging technology is comparatively complicated, is unfavorable for the reduction of production cost.
So, be necessary the moving-coil type electro-acoustic conversing device of said structure is further improved, to avoid above-mentioned defective.
The utility model content
The utility model is made in order to solve above-mentioned problems of the prior art, its purpose is to provide a kind of miniature moving-coil type electroacoustic transducer that improves anti-polarization structure, can improve the defective that existing distortion of structure in the past and distortion etc. cause because of polarization, when promoting product quality, can be so that simplify production technology, reduce production cost, improved labor productivity.
To achieve these goals, a kind of moving-coil type electro-acoustic conversing device that the utility model provides, the shell of involving vibrations system, magnetic circuit system and corresponding fixing described vibrational system and magnetic circuit system, described vibrational system comprise vibrating diaphragm and the voice coil loudspeaker voice coil of being made up of the ball top of rigidity and flexible institute of ring portion combination; Described magnetic circuit system comprises washer, magnet and the basin frame that combines from top to bottom, and,
Described moving-coil type electro-acoustic conversing device comprises also and is arranged between described vibrating diaphragm and the voice coil loudspeaker voice coil and is fixedly mounted on centring disk on the described shell that described voice coil loudspeaker voice coil is fixed on the described centring disk; And described magnetic circuit system is the single magnetic structure that is formed by a magnet.
In addition, preferred construction is that described voice coil loudspeaker voice coil comprises voice coil tube; Voice coil loudspeaker voice coil is fixed on the described centring disk by described voice coil tube.
In addition, preferred construction is that vibrating diaphragm combines the area of the area of the pairing vibrating diaphragm of end face less than the ball top of described rigidity with described voice coil tube.
In addition, preferred construction is that voice coil loudspeaker voice coil is by means of unsettled described magnet and the formed magnetic gap of basin frame that is arranged in described magnetic circuit system of described centring disk.
In addition, preferred construction is, shell comprises and is arranged on four fixing holes on four jiaos on the described shell and is arranged on the magnetic circuit system fixed part that described enclosure is used for fixing described magnetic circuit system, and the centring disk support portion that is used to support described centring disk.
Moreover preferred construction is that centring disk is provided with at least two conducting channels; Described voice coil loudspeaker voice coil is electrically connected to the outside of described moving-coil type electro-acoustic conversing device by described centring disk.
Moreover preferred construction is that centring disk adopts metal material, and constitutes by separating two independent parts along the major axis symmetry.
Moreover preferred construction is, centring disk comprises outward flange, inward flange, around four resiliency supported portions in the gap that is arranged between described outward flange and the inward flange and extension; Outward flange is corresponding with the described centring disk support portion on the described shell; Described extension is provided with the corresponding through hole of described fixing hole with described shell.
Moreover inward flange is provided with the voice coil loudspeaker voice coil installation portion that is used for fixing described voice coil loudspeaker voice coil.
Moreover preferred construction is also to be provided with the support portion corresponding to the medial surface of described voice coil tube on the inward flange of centring disk.
Taked the moving-coil type electro-acoustic conversing device after the above technology provided by the utility model, than conventional art, can effectively improve the defective that polarizations such as existing distortion of structure in the past and distortion cause, when promoting product quality, adopt the magnetic circuit system of single magnet by the binding site that improves voice coil loudspeaker voice coil and vibrating diaphragm, under being provided, the prerequisite of identical actuating force substitutes a plurality of magnetic circuit systems in the conventional art, make that the packaging technology of moving-coil type acoustical generator is more easy, thereby greatly reduce production cost.
Description of drawings
By below in conjunction with accompanying drawing embodiment being described, above-mentioned feature of the present utility model and technological merit will become apparent and understand easily.
Fig. 1 is the exploded perspective view of the concrete structure of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment one;
Fig. 2 is the cross-sectional view after expression embodiment one combination;
Fig. 3 is the shell mechanism schematic diagram of this moving-coil type electro-acoustic conversing device of expression;
Fig. 4 is the vertical view of centring disk in expression the utility model;
Fig. 5 is the stereogram of moving-coil type electro-acoustic conversing device shown in the expression embodiment one;
Fig. 6 is the stereogram of the centring disk that relates to of expression embodiment two of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed description.
In the following description, only the mode by explanation is described some one exemplary embodiment of the present utility model, 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 and be described in just illustratively in essence rather than is used to limit the protection range of claim.In addition, in this manual, identical Reference numeral indicates identical part.
Embodiment one:
Fig. 1 is the exploded perspective view of the concrete structure of the moving-coil type electro-acoustic conversing device that relates to of expression the utility model embodiment one, and Fig. 2 is the schematic diagram of the cross-section structure after expression embodiment one combination.As depicted in figs. 1 and 2, moving-coil type electro-acoustic conversing device provided by the utility model is the strip structure, mainly comprises shell 1, vibrational system and magnetic circuit system.Vibrational system comprises the ball top 21 of rigidity, flexible ring portion 22 and voice coil loudspeaker voice coil 23; The outward flange at ball top 21 is pushed down the vibrating diaphragm that combination back (as shown in Figure 2) constitutes moving-coil type electro-acoustic conversing device by ring portion 22 ring inward flanges.Magnetic circuit system comprises washer 41, magnet 42 and the basin frame 43 that combines from top to bottom, and magnetic circuit system is the single magnetic structure that is made of single magnet, and basin frame 43 is a peviform, is injection-moulded in and is wrapped by shell 1 with shell 1 one.
The centring disk 3 of metal structure also is installed between vibrating diaphragm and voice coil loudspeaker voice coil 23, and the upper surface of centring disk 3 and lower surface combine with the ball top 21 and the voice coil loudspeaker voice coil 23 of rigidity respectively, and the lead-in wire of voice coil loudspeaker voice coil 23 (not marking) is electrically connected on the centring disk 3.
Voice coil loudspeaker voice coil 23 also comprises voice coil tube 231, the top of voice coil tube 231 is fixed on the centring disk 3, the shape of cross section of voice coil loudspeaker voice coil is corresponding identical with magnetic circuit system ground shape of cross section, and the size of voice coil loudspeaker voice coil makes voice coil loudspeaker voice coil 23 can unsettledly be arranged in the magnet and the formed magnetic gap of basin frame (as shown in Figure 2) of magnetic circuit system between magnet and basin frame; And voice coil loudspeaker voice coil 23 is combined on the vibrating diaphragm by voice coil tube 231 and centring disk 3, thereby realizes the machine driving between voice coil loudspeaker voice coil 23 and the vibrating diaphragm.According to the demand of moving-coil type electro-acoustic conversing device, in the utility model, set vibrating diaphragm 1 and combine the area of the area of the pairing vibrating diaphragm of end face with voice coil tube 23 less than the ball top 21 of rigidity to the actuating force size.
Fig. 3 is the shell mechanism schematic diagram of this moving-coil type electro-acoustic conversing device of expression embodiment one, as shown in Figure 3, shell 1 is a rectangle structure, comprise being arranged on four fixing holes 11 that are used for fixing centring disk on 1 four jiaos on the shell and being arranged on the magnetic circuit system fixed part 12 that enclosure is used for fixing described magnetic circuit system, and be used to support centring disk 3 outer peripheral centring disk support portions 13; Wherein be provided with screw thread in the fixing hole 11.The setting of centring disk support portion 13 can be shared four jiaos of support forces that born of centring disk, strengthen centring disk 3 with and the steadiness of the vibrating diaphragm that supported.Shell 1 adopts plastic material in present embodiment one.
Fig. 4 is the vertical view of this centring disk of expression, and as shown in Figure 4, centring disk 3 is a runway shape, constitutes by separating two independent parts along the major axis symmetry, and forms two conducting channels.Centring disk 3 comprises outward flange 33 and inward flange 31, and in the gap between its outer edges 33 and the inward flange 31 around four resiliency supported portions 32 that are provided with; Inward flange 31 is provided with voice coil loudspeaker voice coil installation portion 311 and is used for fixing voice coil tube 231, thus fixing voice coil loudspeaker voice coil 23; Outward flange 33 is combined on the shell 1 by the support corresponding to the centring disk support portion 13 on the shell.And centring disk also is provided with four extensions 331 (comprising 331a shown in Fig. 4 and 331b) that link to each other with outward flange 33 corresponding to the part of 1 four jiaos on shell, also be respectively arranged with the through hole 332 (comprising 332a shown in Fig. 4 and 332b) corresponding to location hole 11 on each extension 331, wherein two circuit separating along the major axis symmetry of centring disk are divided into extension 331 and through hole 332 extension 331a, through hole 332a respectively and separately are arranged on the different circuit with extension 331b, through hole 332b.
In the utility model, the centring disk 3 of metal structure is fixedly mounted on the shell 1 by means of the through hole 332 on its outward flange 33, extension 331 and the extension, also guaranteed to be fixed on the voice coil tube on the centring disk and the steadiness of voice coil loudspeaker voice coil outside the steadiness that has strengthened centring disk itself, the interaction that can effectively avoid moving-coil type electro-acoustic conversing device in use to produce owing to voice coil loudspeaker voice coil magnetic field and magnetic circuit system magnetic field causes is easy to generate voice coil loudspeaker voice coil to depart from the defective of the skew on the vertical direction.And the steadiness that the centring disk support portion 13 of the centring disk 3 of metal structure and shell 1 is provided in the utility model also provides reliable steadiness for the vibrating diaphragm that centring disk supported, can avoid moving-coil type electro-acoustic conversing device in use because voice coil loudspeaker voice coil is connected with vibrating diaphragm and being easy to of producing that transmission causes caused the unbalanced defective of vibration of the moving-coil type electro-acoustic conversing device vibrating diaphragm of strip effectively, avoid vibrating diaphragm in the application process of transducer, to produce distortion and distortion etc. bad, thereby the stability of raising vibrational system work.
Fig. 5 is the stereogram of this moving-coil type electro-acoustic conversing device of expression, as shown in Figure 5, through hole 332 passes through nut 6 secure bond together with location hole 11, thereby with the centring disk secure bond on shell 1, then can be by realizing electric connecting part such as lead and being connected of extension 331 being electrically connected of moving-coil type electro-acoustic conversing device and external electronic circuits.
Utilize technique scheme of the present utility model, especially between vibrating diaphragm and voice coil loudspeaker voice coil 23, centring disk 3 is set, and the technology that changes the binding site between voice coil loudspeaker voice coil 23 and the vibrating diaphragm, not only can effectively improve the defective that polarizations such as the distortion of the existing moving-coil type electro-acoustic conversing device of prior art kind and distortion cause, promote product quality, simultaneously, adopt the magnetic circuit system of single magnet by the binding site that improves voice coil loudspeaker voice coil and vibrating diaphragm, under being provided, the prerequisite of identical actuating force substitutes the magnetic circuit system of a plurality of magnet in the conventional art, make that also the packaging technology of moving-coil type acoustical generator is more easy, thereby effectively reduce production cost.
Need to prove that in the moving-coil type electro-acoustic conversing device of the said structure that present embodiment relates to, the shell 1 of plastic construction only is a preferred material, also can select the shell of other material-structures for use according to demands such as product applied environments; Centring disk 3 also can adopt non-conducting material, can be set to integrative-structure, mode by the coating electrically conductive coating forms at least two and can put and be connected to the microphone circuit external, perhaps also can realize being electrically connected by conductive components such as lead-in wire or flexible circuit board; Embodiment one shape that provides and size also are provided for voice coil loudspeaker voice coil and magnetic circuit system, more than all can adjust according to the actual needs of producing.
Embodiment two:
Fig. 6 is the stereogram of the related centring disk of expression the utility model embodiment two.As shown in Figure 6, present embodiment two is with the main difference of the foregoing description one, also be provided with the support portion 312 of the medial surface of corresponding voice coil tube 231 in the present embodiment on the inward flange 31 of centring disk 3, be used to and be fixed on voice coil tube 231 on the centring disk and voice coil loudspeaker voice coil 23 by means of the voice coil loudspeaker voice coil installation portion 311 on the inward flange 31 support force on the horizontal direction is provided, with the reduction that the major axis side of avoiding voice coil loudspeaker voice coil 23 bends, voice coil loudspeaker voice coil 23 shapes change the product vibration performance that caused, thereby improve the quality of moving-coil type electro-acoustic conversing device in installing and using process.
In present embodiment 2, as shown in Figure 6, support portion 312 is two, be symmetricly set on inward flange 31 on, and perpendicular to centring disk 3 surfaces.Certainly, also can take the circumstances into consideration according to actual needs to increase support portion 312 quantity, change the position that is provided with of support portion 312, such as increasing to four support portions, be separately positioned on the inward flange 31 and voice coil loudspeaker voice coil installation portion 311 first-class.
This improvement of present embodiment two, can realize the technique effect of embodiment one equally, by between vibrating diaphragm and voice coil loudspeaker voice coil 23, centring disk 3 being set, and by changing the binding site between voice coil loudspeaker voice coil 23 and the vibrating diaphragm, feasible improvement is existing polarization of structure and defectives such as distortion that is caused and distortion in the past, when promoting product quality, adopt the magnet of single magnetic circuit by the binding site that improves voice coil loudspeaker voice coil and vibrating diaphragm, under being provided, the prerequisite of identical actuating force substitutes a plurality of magnetic circuit systems in the conventional art, make that the packaging technology of moving-coil type acoustical generator is more easy, thus the purpose that realization reduces production costs.And in addition, the comparative example one, and the support portion 312 that increases in the present embodiment two can also prevent that the major axis side of voice coil loudspeaker voice coil 23 from bending, and avoids the shape of voice coil loudspeaker voice coil 23 to change, and causes the product vibration performance bad.
Under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description; and these improvement and distortion; all drop in the protection range of the present utility model; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained the purpose of this utility model, and protection range of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. moving-coil type electro-acoustic conversing device, the shell (1) of involving vibrations system, magnetic circuit system and corresponding fixing described vibrational system and magnetic circuit system, described vibrational system comprise by the ball top (21) of rigidity and flexible ring portion (22) combination vibrating diaphragm and the voice coil loudspeaker voice coil (23) formed; Described magnetic circuit system comprises washer (41), magnet (42) and the basin frame (43) that combines from top to bottom, it is characterized in that,
Described moving-coil type electro-acoustic conversing device comprises also and is arranged between described vibrating diaphragm and the voice coil loudspeaker voice coil and is fixedly mounted on centring disk (3) on the described shell that described voice coil loudspeaker voice coil (23) is fixed on the described centring disk (3); And
Described magnetic circuit system is the single magnetic structure that is formed by a magnet (42).
2. according to the described moving-coil type electro-acoustic conversing device of claim 1, it is characterized in that,
Described voice coil loudspeaker voice coil (23) comprises voice coil tube (231);
Described voice coil loudspeaker voice coil (23) is fixed on the described centring disk (3) by described voice coil tube (231).
3. according to the described moving-coil type electro-acoustic conversing device of claim 2, it is characterized in that,
Described vibrating diaphragm combines the area of the area of the pairing vibrating diaphragm of end face less than the ball top (21) of described rigidity with described voice coil tube (231).
4. according to the described moving-coil type electro-acoustic conversing device of claim 3, it is characterized in that,
Described voice coil loudspeaker voice coil (23) is by means of unsettled described magnet (42) and the formed magnetic gap of basin frame (43) that is arranged in described magnetic circuit system of described centring disk (3).
5. according to the described moving-coil type electro-acoustic conversing device of claim 4, it is characterized in that,
Described shell (1) comprises and is arranged on four fixing holes (11) on (1) four jiao on the described shell and is arranged on the magnetic circuit system fixed part (12) that described shell (1) inside is used for fixing described magnetic circuit system, and the centring disk support portion (13) that is used to support described centring disk (3).
6. according to the described moving-coil type electro-acoustic conversing device of claim 5, it is characterized in that,
Described centring disk (3) is provided with at least two conducting channels;
Described voice coil loudspeaker voice coil (23) is electrically connected to the outside of described moving-coil type electro-acoustic conversing device by described centring disk (3).
7. according to the described moving-coil type electro-acoustic conversing device of claim 6, it is characterized in that,
Described centring disk (3) adopts metal material, and constitutes by separating two independent parts along the major axis symmetry.
8. according to the described moving-coil type electro-acoustic conversing device of claim 7, it is characterized in that,
Described centring disk (3) comprises outward flange (33), inward flange (31), around four resiliency supported portions (32) in the gap that is arranged between described outward flange (33) and the inward flange (31) and extension (331);
Described outward flange (33) is corresponding with the described centring disk support portion (13) on the described shell (1);
Described extension (331) is provided with the corresponding through hole of described fixing hole (11) (332) with described shell (1).
9. according to the described moving-coil type electro-acoustic conversing device of claim 8, it is characterized in that,
Described inward flange (31) is provided with the voice coil loudspeaker voice coil installation portion (311) that is used for fixing described voice coil loudspeaker voice coil (23).
10. according to claim 8 or 9 described moving-coil type electro-acoustic conversing devices, it is characterized in that,
Also be provided with support portion (312) on the inward flange (31) of described centring disk (3) corresponding to the medial surface of described voice coil tube (231).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201669922U CN201667712U (en) | 2010-04-22 | 2010-04-22 | Moving-coil type electroacoustic transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201669922U CN201667712U (en) | 2010-04-22 | 2010-04-22 | Moving-coil type electroacoustic transducer |
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| CN201667712U true CN201667712U (en) | 2010-12-08 |
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| CN2010201669922U Expired - Lifetime CN201667712U (en) | 2010-04-22 | 2010-04-22 | Moving-coil type electroacoustic transducer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163003A1 (en) * | 2011-05-31 | 2012-12-06 | 歌尔声学股份有限公司 | Dynamic electroacoustic transducer |
| CN103281656A (en) * | 2013-05-08 | 2013-09-04 | 歌尔声学股份有限公司 | Flat plate type bass loudspeaker |
| WO2014180015A1 (en) * | 2013-05-08 | 2014-11-13 | 歌尔声学股份有限公司 | Flat plate type bass loudspeaker |
| CN105721993A (en) * | 2016-03-21 | 2016-06-29 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of vibration diaphragm |
| CN107801135A (en) * | 2016-09-02 | 2018-03-13 | 富祐鸿科技股份有限公司 | Loadspeaker structure |
| CN109246552A (en) * | 2018-09-28 | 2019-01-18 | 歌尔股份有限公司 | Vibrating diaphragm, vibrating diaphragm component and loudspeaker |
| CN110351638A (en) * | 2019-06-26 | 2019-10-18 | 瑞声科技(新加坡)有限公司 | A kind of loudspeaker |
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2010
- 2010-04-22 CN CN2010201669922U patent/CN201667712U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163003A1 (en) * | 2011-05-31 | 2012-12-06 | 歌尔声学股份有限公司 | Dynamic electroacoustic transducer |
| CN103281656A (en) * | 2013-05-08 | 2013-09-04 | 歌尔声学股份有限公司 | Flat plate type bass loudspeaker |
| WO2014180015A1 (en) * | 2013-05-08 | 2014-11-13 | 歌尔声学股份有限公司 | Flat plate type bass loudspeaker |
| US9788121B2 (en) | 2013-05-08 | 2017-10-10 | Goertek Inc. | Flat plate-type bass loudspeaker |
| CN105721993A (en) * | 2016-03-21 | 2016-06-29 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of vibration diaphragm |
| WO2017161654A1 (en) * | 2016-03-21 | 2017-09-28 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of diaphragm |
| CN105721993B (en) * | 2016-03-21 | 2018-12-14 | 歌尔股份有限公司 | The method of the vibration displacement of loudspeaker monomer, speaker system and adjustment vibrating diaphragm |
| US10715907B2 (en) | 2016-03-21 | 2020-07-14 | Goertek, Inc. | Speaker unit, speaker system, and method for adjusting vibration displacement of vibration diaphragm |
| CN107801135A (en) * | 2016-09-02 | 2018-03-13 | 富祐鸿科技股份有限公司 | Loadspeaker structure |
| CN107801135B (en) * | 2016-09-02 | 2020-07-07 | 东莞顺合丰电业有限公司 | Loudspeaker structure |
| CN109246552A (en) * | 2018-09-28 | 2019-01-18 | 歌尔股份有限公司 | Vibrating diaphragm, vibrating diaphragm component and loudspeaker |
| CN110351638A (en) * | 2019-06-26 | 2019-10-18 | 瑞声科技(新加坡)有限公司 | A kind of 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. 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: 20101208 |