CN203301728U - Dual-diaphragm loudspeaker module - Google Patents
Dual-diaphragm loudspeaker module Download PDFInfo
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- CN203301728U CN203301728U CN201320277319XU CN201320277319U CN203301728U CN 203301728 U CN203301728 U CN 203301728U CN 201320277319X U CN201320277319X U CN 201320277319XU CN 201320277319 U CN201320277319 U CN 201320277319U CN 203301728 U CN203301728 U CN 203301728U
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Abstract
The utility model discloses a dual-diaphragm loudspeaker module, which comprises a loudspeaker monocase and a peripheral housing used for accommodating the loudspeaker monocase. The loudspeaker monocase is composed of a first diaphragm, a voice coil, a magnetic circuit system and a second diaphragm. The peripheral housing is provided with a first phonate hole and a second phonate hole respectively communicated with the outside. A first front sound cavity communicated with the first phonate hole is formed between the first diaphragm and the peripheral housing. A second front sound cavity communicated with the second phonate hole is formed between the second diaphragm and the peripheral housing. A space between the first diaphragm and the second diaphragm is communicated with a rear sound cavity. According to the technical scheme of the utility model, the above structure is fittingly matched with the dual-diaphragm loudspeaker module during usage, so that the low-frequency sound effect of the loudspeaker module is improved. Therefore, the acoustical property of products is improved.
Description
Technical field
The utility model relates to the electroacoustic field, is specifically related to a kind of double diaphragm loud speaker module that has.
Background technology
Multifunction speaker with vibrating function is widely used at present, and the multifunction speaker of this structure has the function of loud speaker and vibrating motor simultaneously concurrently.In this multifunction speaker, magnetic circuit system is not fixed on shell as oscillator, but by an elastic supporting member for supporting optical member fixed support, can produce vibration sense during the magnetic circuit system vibration.Because the resonance frequency of magnetic circuit system system is lower, the obvious vibration sense of magnetic circuit system generation of vibration under low frequency condition and the vibration of vibrational system is not obvious, at this time multifunction speaker is applied as vibrating motor; And in the medium-high frequency section, the vibration of magnetic circuit system is not obvious, and obviously, this moment is the vocal function of application multifunction speaker mainly in the vibrational system vibration.The elastic supporting member for supporting optical member of traditional structure mostly is the metal clips structure, only plays the effect of fixed support magnetic circuit system, for the lifting of multifunction speaker low-frequency range acoustical behavior, there is no help.
Elastic supporting member for supporting optical member can be replaced by a vibrating diaphragm as a kind of improvement, thereby can be utilized fully the low frequency signal of product, the low frequency sound effect of improving product.But the application structure that also the multifunction speaker of this structure is not used at present module or other electronic installations.Therefore, be necessary to provide a kind of loud speaker module of applying above-mentioned multifunction speaker.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of double diaphragm loud speaker module, can coordinate the double diaphragm loudspeaker applications, improves the low frequency sound effect of product.
To achieve these goals, the utility model provides a kind of double diaphragm loud speaker module, comprises loudspeaker monomer and accommodates the peripheral housing of fixing described loudspeaker monomer; Described loudspeaker monomer comprises the first vibrating diaphragm, voice coil loudspeaker voice coil, magnetic circuit system and the second vibrating diaphragm; Wherein voice coil loudspeaker voice coil is incorporated into the side of described the first vibrating diaphragm near described magnetic circuit system, and described magnetic circuit system is provided with the magnetic gap of accommodating described voice coil loudspeaker voice coil; Described the second vibrating diaphragm and described magnetic circuit system secure bond, and support described magnetic circuit system; Wherein, described peripheral housing is provided with the first phonate hole and the second phonate hole that is in communication with the outside respectively; Form the front operatic tunes and the rear operatic tunes between described loudspeaker monomer and described peripheral housing; Form the first front operatic tunes that is communicated with described the first phonate hole between described the first vibrating diaphragm and described peripheral housing, the second front operatic tunes that between described the second vibrating diaphragm and described peripheral housing, formation is communicated with described the second phonate hole; Described the first vibrating diaphragm is communicated with the described rear operatic tunes with the space between described the second vibrating diaphragm.
In addition, preferred scheme is, the described first front operatic tunes and the described second front operatic tunes are the structure that interval arranges, and the described first front operatic tunes is positioned at the side of described the first vibrating diaphragm away from described the second vibrating diaphragm, and the described second front operatic tunes is positioned at the side of described the second vibrating diaphragm away from described the first vibrating diaphragm.
In addition, preferred scheme is that described the first phonate hole and/or described the second phonate hole are positioned on the side of described peripheral housing.
In addition, preferred scheme is that described the first phonate hole and/or described the second phonate hole are positioned on the front of described peripheral housing.
In addition, preferred scheme is, described loudspeaker monomer comprises the shell of accommodating fixing described the first vibrating diaphragm and described the second vibrating diaphragm, and the position over against described the first vibrating diaphragm and described the second vibrating diaphragm on described shell is respectively equipped with the intercommunicating pore that is communicated with the described first front operatic tunes and the described second front operatic tunes.
In addition, preferably scheme is, described loudspeaker monomer is comprised of described the first vibrating diaphragm, voice coil loudspeaker voice coil, the second vibrating diaphragm and magnetic circuit system, and described peripheral housing is provided with the fixed structure of fixing described the first vibrating diaphragm and described the second vibrating diaphragm.
In addition, preferred scheme is, the described rear operatic tunes is positioned at the side of described loudspeaker monomer, the side of described loudspeaker monomer be provided be communicated with the described rear operatic tunes let out the sound hole.
In addition, preferred scheme is that described the first phonate hole and described the second phonate hole all are positioned at the side of described peripheral housing, and are arranged side by side up and down.
In addition, preferably scheme is, described the first phonate hole is positioned at the front of described peripheral housing, and described the second phonate hole is positioned at the side of described peripheral housing; Described the first phonate hole is over against described the first vibrating diaphragm setting, and by described peripheral housing, is divided into list structure.
In addition, preferred scheme is, described loudspeaker monomer is equipped with resilient snubber on upper surface that described peripheral housing is combined and lower surface.
After adopting technique scheme, compare with traditional structure, the double diaphragm loud speaker module of this structure, have two front operatic tunes and two phonate holes of being communicated with respectively the first vibrating diaphragm and the second vibrating diaphragm, thereby can take full advantage of the sound that two vibrating diaphragms produce, namely this loud speaker module can coordinate this double diaphragm loud speaker to use, thereby has improved the low frequency sound effect of this structure of loudspeaker module, has improved the acoustical behavior of product.
Description of drawings
By below in conjunction with accompanying drawing, the utility model being described, above-mentioned feature of the present utility model and technological merit will become apparent and easily understand.
Fig. 1 is the stereo decomposing structural representation of the utility model embodiment a pair of vibrating membrane loudspeaker module;
Fig. 2 is the perspective view of the utility model embodiment one loud speaker module;
Fig. 3 is the cross-sectional view of the utility model embodiment one loudspeaker monomer;
Fig. 4 is the cross-sectional view one of the utility model embodiment one loud speaker module;
Fig. 5 is the cross-sectional view two of the utility model embodiment one loud speaker module;
Fig. 6 is the stereo decomposing structural representation of the utility model embodiment two loud speaker modules;
Fig. 7 is the perspective view of the utility model embodiment two loud speaker modules;
Fig. 8 is the cross-sectional view of the utility model embodiment two loud speaker modules.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done further detailed description.
Embodiment one:
As depicted in figs. 1 and 2, the utility model loud speaker module comprises loudspeaker monomer 3 and accommodates the fixedly peripheral housing of loudspeaker monomer 3, wherein also be combined with respectively resilient snubber 4 on loudspeaker monomer 3 with on the upper surface of peripheral housing secure bond and lower surface, the present embodiment resilient snubber 4 can be foam or bullet pad.Assembling for the ease of the loud speaker module, peripheral housing is divided into independently two parts: the first housing 1 and the second housing 2, can be with loudspeaker monomer 3 and resilient snubber 4 and the first housing 1(or the second housing 2 in assembling process) after assembling, again with the second housing 2(or the first housing 1) with the first housing 1(or the second housing 2) corresponding combination, then by the mode of gluing or ultrasonic bonding, the first housing 1 and the second housing 2 secure bond are completed the assembling of loud speaker module.
In addition, form the front operatic tunes and the rear operatic tunes of loud speaker module between loudspeaker monomer 3 and peripheral housing, the rear operatic tunes is the structure of sealing; The front operatic tunes comprises the two parts that minute are arranged, respectively two vibrating diaphragm settings of corresponding loudspeaker monomer 3.
As shown in Figure 3, loudspeaker monomer 3 comprises the first vibrating diaphragm 31, the second vibrating diaphragm 32, voice coil loudspeaker voice coil 33 and magnetic circuit system; Magnetic circuit system comprises the basin frame 36 of washer 34, magnet 35 and the magnetic conduction of combination successively; Wherein voice coil loudspeaker voice coil 33 is incorporated into the side of the first vibrating diaphragm 31 near magnetic circuit system, and magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil 33.The second vibrating diaphragm 32 and magnetic circuit system secure bond, the present embodiment and basin frame 36 secure bond, the intensity of the second vibrating diaphragm 32 is greater than the intensity of the first vibrating diaphragm 31, and is preferred, can adopt the materials such as PU or silicon rubber vibrating diaphragm; The second vibrating diaphragm 32 can support magnetic circuit system, and follows the magnetic circuit system vibration.Wherein, the first vibrating diaphragm 31 and voice coil loudspeaker voice coil 33 form the vibrational system of loudspeaker monomer 3, can vibration sounding in the course of work.
The utility model loudspeaker monomer has the function of vibration and sounding simultaneously, the resonance frequency of magnetic circuit system is lower, and the resonance frequency of vibrational system is higher, therefore in relative low-frequency range magnetic circuit system generation of vibration vibration sense, at relative high frequency section vibrational system generation of vibration sound.Voice coil loudspeaker voice coil 33 is contained in the magnetic gap of magnetic circuit system formation, and after voice coil loudspeaker voice coil 33 was connected the signals of telecommunication, in the medium-high frequency section, voice coil loudspeaker voice coil 33 is stressed up-down vibration in the magnetic field that magnetic circuit system forms, and further drives the first vibrating diaphragm 31 generation of vibration sound; In low-frequency range, vibrational system is not vibrated, and magnetic circuit system and voice coil loudspeaker voice coil 33 produce the interaction force up-down vibration, and by the second vibrating diaphragm 32, supports magnetic circuit system.What support that fixing magnetic circuit system vibrates due to the utility model is the second vibrating diaphragm 32, the second vibrating diaphragm 23 also can produce sound in the process of following the magnetic circuit system vibration, thereby can take full advantage of low frequency signal and produce low-frequency sound wave, improved the low frequency performance of multifunction speaker, expand the working frequency range of whole loudspeaker monomer 3, thereby improved the acoustical behavior of loudspeaker monomer 3.
In addition, the present embodiment loudspeaker monomer 3 also comprises accommodates the fixedly shell 37 of said elements (being mainly the first vibrating diaphragm 31 and the second vibrating diaphragm 32), it is three parts that the present embodiment shell 37 is divided into, respectively the surface of the both sides of the edge of secure bond the first vibrating diaphragm 31 and the second vibrating diaphragm 32.Position over against two vibrating diaphragms on shell 37 is equipped with intercommunicating pore 371, and Fig. 3 has only marked the intercommunicating pore 371 over against vibrating diaphragm 32, and shell 37 is provided with open communication hole (this part does not mark) over against the position of the first vibrating diaphragm 31; Intercommunicating pore 371 can be communicated with respectively two vibrating diaphragms and the front operatic tunes of corresponding two parts, thereby the sound that two vibrating diaphragms produce all can be communicated with the front operatic tunes by intercommunicating pore 371, further is in communication with the outside.In the present embodiment, the first vibrating diaphragm 31 is identical with the structure and material of conventional vibrating diaphragm, has the ball top that is positioned at center and the ring section that is positioned at marginal position; The second vibrating diaphragm 32 is the loop configuration of hollow, and secure bond is in the periphery of basin frame 36, but is not limited to this structure, also can have the ball top, can be incorporated into the lower surface of basin frame 36.
Fig. 4 and Fig. 5 are the profiles of two angles of the utility model loud speaker module, as shown in the figure, the first vibrating diaphragm 31 and over against forming the first front operatic tunes I between the first housing of the first vibrating diaphragm 31, namely the first front operatic tunes I is positioned at away from the side of the first vibrating diaphragm 31 away from the first vibrating diaphragm 32, the first front operatic tunes I is communicated with the first phonate hole 10, thereby the sound that the first vibrating diaphragm 31 is produced can be transferred to the external world by the first phonate hole 10.Form the second front operatic tunes II between the second vibrating diaphragm 32 and the second housing, namely the second front operatic tunes II is positioned at the side of the second vibrating diaphragm 32 away from the first vibrating diaphragm 31, the sound that the second vibrating diaphragm 32 produces is communicated with the second front operatic tunes II by the intercommunicating pore 371 on shell 37, the second front operatic tunes II is connected with the second phonate hole 20, thereby the sound that the second vibrating diaphragm 32 is produced can be transferred to the external world.Rear operatic tunes III is arranged at the side of loudspeaker monomer, with the sound hole 30 of letting out on being positioned at shell 37 sidewalls, is communicated with, and is airtight structure.As shown in the figure, let out sound hole 30 between the first vibrating diaphragm 31 and the second vibrating diaphragm 32, be the rear operatic tunes III that is shared by the first vibrating diaphragm 31 and the second vibrating diaphragm 32.
In addition, the edge of the upper surface of loudspeaker monomer and lower surface all is combined with the resilient snubber 4 of annular as previously described, as shown in Figure 4, resilient snubber 4 both sides respectively with shell 37 and peripheral housing on the fixedly structure pressing of loudspeaker monomer, the two front operatic tunes and rear operatic tunes III are separated, and improved the seal of rear operatic tunes III.
The double diaphragm loud speaker module of this structure, have two front operatic tunes and two phonate holes of being communicated with respectively the first vibrating diaphragm and the second vibrating diaphragm, thereby can take full advantage of the sound that two vibrating diaphragms produce, namely this loud speaker module can coordinate the use of this double diaphragm loud speaker, thereby improve the low frequency sound effect of this structure of loudspeaker module, improve the acoustical behavior of product.
Embodiment two:
As shown in Figure 6 and Figure 7, the present embodiment loud speaker module comprises loudspeaker monomer 3, accommodates the fixedly peripheral housing of loudspeaker monomer 3, and the resilient snubber 4 that is incorporated into loudspeaker monomer 3 both sides of the edge.Peripheral housing is divided into two parts: the first housing 1 ' and the second housing 2; The main distinction of the present embodiment and embodiment one is: the first phonate hole 10 ' is arranged at the upper surface of the first housing 1 ', and the side of the second housing 2 is provided with the second phonate hole 20.In addition, the side of loudspeaker monomer 3 also be provided be communicated with the operatic tunes and loudspeaker monomer 3 inboards after the loud speaker module let out sound hole 30.In the present embodiment, the first phonate hole 10 ' is divided into a plurality of list structures by peripheral housing, and this structure dust-proof effect is relatively good, and is preferred, on the inboard of the first phonate hole 10 ' or lateral surface, Air Filter can be set.
As shown in Figure 8, form the first front operatic tunes I between the first vibrating diaphragm 31 of loudspeaker monomer and peripheral housing, the first front operatic tunes I is connected with the first phonate hole 10 ', and the sound that the first vibrating diaphragm 31 is produced can be transferred to the external world by the first phonate hole 10 '.The second vibrating diaphragm 32 and magnetic circuit system secure bond, shell 37 over against the second vibrating diaphragm 32 is provided with intercommunicating pore 371, intercommunicating pore 371 is communicated with by intercommunicating pore 371 sound that the second vibrating diaphragm 32 produces with the second front operatic tunes II, the second front operatic tunes II is communicated with the second phonate hole 20, thereby the sound that the second vibrating diaphragm 32 is produced can be transferred to the external world by the second phonate hole 20.Rear operatic tunes III is arranged at the side of loudspeaker monomer, is provided with and lets out sound hole 30 on the position between the first vibrating diaphragm 31 and the second vibrating diaphragm 32 on the sidewall of the shell 37 of loudspeaker monomer, lets out sound hole 30 and is communicated with rear operatic tunes III.In addition, be equipped with resilient snubber 4 on the upper surface of loudspeaker monomer and peripheral frame secure bond and lower surface, resilient snubber 4 can be separated the two front operatic tunes and rear operatic tunes III, and the sealing of operatic tunes III after guaranteeing.
The double diaphragm loud speaker module of same this improvement structure, also have two front operatic tunes and two phonate holes of being communicated with respectively the first vibrating diaphragm and the second vibrating diaphragm, thereby can take full advantage of the sound that two vibrating diaphragms produce, namely this loud speaker module can coordinate the use of this double diaphragm loud speaker, thereby improve the low frequency sound effect of this structure of loudspeaker module, improve the acoustical behavior of product.
In addition, the present embodiment the first phonate hole 10 ' is not limited to this structure, the first phonate hole 10 ' can be not divided yet, the materials such as the wire netting that can prevent dust by mode secure bond such as injection moulding, hot melts in the position over against the first vibrating diaphragm 31 or nonmetal net (as nylon net cloth).
In the utility model, loudspeaker monomer can not have shell 37; only comprise the first vibrating diaphragm, the second vibrating diaphragm, voice coil loudspeaker voice coil and magnetic circuit system; fix the first vibrating diaphragm and the second vibrating diaphragm by the structure on peripheral housing; and two front operatic tunes and the rear operatic tunes that arranges separated in formation; this structure equally just has above-mentioned technique effect, equally in protection range of the present utility model.
In addition, above-mentioned two embodiment have only enumerated the schemes that two kinds of sound holes arrange, but are not limited to above-mentioned two schemes, and two phonate holes can be arranged at the front of peripheral frame simultaneously, namely over against the surface of the first vibrating diaphragm or the second vibrating diaphragm; Also side can be arranged at simultaneously, the side of homonymy or the side of homonymy not can be arranged at.
In addition, in above-described embodiment, the structure of peripheral frame is not limited to this more upright rectangular structure, also can be other rule or irregular shape, can with arc-shaped side, groove etc. common structure in the loud speaker module, two phonate holes also can be arranged on the structures such as arc-shaped side or groove, namely the position of two phonate holes can arrange according to concrete applicable cases, is not limited to above-described embodiment.
Under above-mentioned instruction of the present utility model; those skilled in the art can carry out other improvement and distortion on the basis of above-described embodiment; and these improvement and distortion; all drop in 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. a double diaphragm loud speaker module, comprise loudspeaker monomer and accommodate the peripheral housing of fixing described loudspeaker monomer; Described loudspeaker monomer comprises the first vibrating diaphragm, voice coil loudspeaker voice coil, magnetic circuit system and the second vibrating diaphragm; Wherein voice coil loudspeaker voice coil is incorporated into the side of described the first vibrating diaphragm near described magnetic circuit system, and described magnetic circuit system is provided with the magnetic gap of accommodating described voice coil loudspeaker voice coil; Described the second vibrating diaphragm and described magnetic circuit system secure bond, and support described magnetic circuit system; It is characterized in that,
Described peripheral housing is provided with the first phonate hole and the second phonate hole that is in communication with the outside respectively; Form the front operatic tunes and the rear operatic tunes between described loudspeaker monomer and described peripheral housing; Form the first front operatic tunes that is communicated with described the first phonate hole between described the first vibrating diaphragm and described peripheral housing, the second front operatic tunes that between described the second vibrating diaphragm and described peripheral housing, formation is communicated with described the second phonate hole; Described the first vibrating diaphragm is communicated with the described rear operatic tunes with the space between described the second vibrating diaphragm.
2. a kind of double diaphragm loud speaker module according to claim 1, it is characterized in that, the described first front operatic tunes and the described second front operatic tunes are the structure that interval arranges, the described first front operatic tunes is positioned at the side of described the first vibrating diaphragm away from described the second vibrating diaphragm, and the described second front operatic tunes is positioned at the side of described the second vibrating diaphragm away from described the first vibrating diaphragm.
3. a kind of double diaphragm loud speaker module according to claim 2, is characterized in that, described the first phonate hole and/or described the second phonate hole are positioned on the side of described peripheral housing.
4. loud speaker module according to claim 2, is characterized in that, described the first phonate hole and/or described the second phonate hole are positioned on the front of described peripheral housing.
5. according to claim 3 or 4 described a kind of double diaphragm loud speaker modules, it is characterized in that, described loudspeaker monomer comprises the shell of accommodating fixing described the first vibrating diaphragm and described the second vibrating diaphragm, and the position over against described the first vibrating diaphragm and described the second vibrating diaphragm on described shell is respectively equipped with the intercommunicating pore that is communicated with the described first front operatic tunes and the described second front operatic tunes.
6. according to claim 3 or 4 described a kind of double diaphragm loud speaker modules, it is characterized in that, described loudspeaker monomer is comprised of described the first vibrating diaphragm, voice coil loudspeaker voice coil, the second vibrating diaphragm and magnetic circuit system, and described peripheral housing is provided with the fixed structure of fixing described the first vibrating diaphragm and described the second vibrating diaphragm.
7. a kind of double diaphragm loud speaker module according to claim 5, is characterized in that, the described rear operatic tunes is positioned at the side of described loudspeaker monomer, the side of described loudspeaker monomer be provided be communicated with the described rear operatic tunes let out the sound hole.
8. a kind of double diaphragm loud speaker module according to claim 7, is characterized in that, described the first phonate hole and described the second phonate hole all are positioned at the side of described peripheral housing, and are arranged side by side up and down.
9. a kind of double diaphragm loud speaker module according to claim 7, is characterized in that, described the first phonate hole is positioned at the front of described peripheral housing, and described the second phonate hole is positioned at the side of described peripheral housing; Described the first phonate hole is over against described the first vibrating diaphragm setting, and by described peripheral housing, is divided into list structure.
10. a kind of double diaphragm loud speaker module according to claim 7, is characterized in that, described loudspeaker monomer is equipped with resilient snubber on upper surface that described peripheral housing is combined and lower surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320277319XU CN203301728U (en) | 2013-05-18 | 2013-05-18 | Dual-diaphragm loudspeaker module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320277319XU CN203301728U (en) | 2013-05-18 | 2013-05-18 | Dual-diaphragm loudspeaker module |
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| CN203301728U true CN203301728U (en) | 2013-11-20 |
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| CN201320277319XU Expired - Fee Related CN203301728U (en) | 2013-05-18 | 2013-05-18 | Dual-diaphragm loudspeaker module |
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| CN103297904A (en) * | 2013-05-18 | 2013-09-11 | 歌尔声学股份有限公司 | Double-vibrating-diaphragm speaker module |
| WO2015109697A1 (en) * | 2014-01-26 | 2015-07-30 | 歌尔声学股份有限公司 | Multi-diaphragm speaker |
| WO2015109699A1 (en) * | 2014-01-26 | 2015-07-30 | 歌尔声学股份有限公司 | Multi-diaphragm speaker system |
| WO2016000373A1 (en) * | 2014-06-30 | 2016-01-07 | 歌尔声学股份有限公司 | Sound producing device |
| CN107277713A (en) * | 2017-07-06 | 2017-10-20 | 深圳市金宏翔电子科技有限公司 | Carry acoustics cavity loudspeaker |
| CN107454513A (en) * | 2016-06-01 | 2017-12-08 | 宏碁股份有限公司 | The loudspeaker arrangement and electronic installation strengthened with gamut and bass |
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| CN107454513A (en) * | 2016-06-01 | 2017-12-08 | 宏碁股份有限公司 | The loudspeaker arrangement and electronic installation strengthened with gamut and bass |
| CN107277713A (en) * | 2017-07-06 | 2017-10-20 | 深圳市金宏翔电子科技有限公司 | Carry acoustics cavity loudspeaker |
| CN107277713B (en) * | 2017-07-06 | 2023-06-23 | 深圳市金宏翔声学有限公司 | Loudspeaker with acoustic cavity |
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| CN111343542A (en) * | 2020-03-05 | 2020-06-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN111327999A (en) * | 2020-03-05 | 2020-06-23 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN114257672A (en) * | 2020-09-22 | 2022-03-29 | 华为终端有限公司 | Sound production device and electronic equipment |
| CN114257672B (en) * | 2020-09-22 | 2023-07-14 | 华为终端有限公司 | Sound production device and electronic equipment |
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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: 20131120 Termination date: 20210518 |