CN101198196A - Loudspeaker box structure and mobile electronic equipments adopting the loudspeaker box structure - Google Patents

Loudspeaker box structure and mobile electronic equipments adopting the loudspeaker box structure Download PDF

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Publication number
CN101198196A
CN101198196A CNA2006101573646A CN200610157364A CN101198196A CN 101198196 A CN101198196 A CN 101198196A CN A2006101573646 A CNA2006101573646 A CN A2006101573646A CN 200610157364 A CN200610157364 A CN 200610157364A CN 101198196 A CN101198196 A CN 101198196A
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CN
China
Prior art keywords
sound chamber
cavity
chamber
sound
loudspeaker box
Prior art date
Application number
CNA2006101573646A
Other languages
Chinese (zh)
Inventor
杨宗龙
白先声
Original Assignee
富准精密工业(深圳)有限公司
鸿准精密工业股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 富准精密工业(深圳)有限公司, 鸿准精密工业股份有限公司 filed Critical 富准精密工业(深圳)有限公司
Priority to CNA2006101573646A priority Critical patent/CN101198196A/en
Publication of CN101198196A publication Critical patent/CN101198196A/en

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Abstract

The invention relates to a sound box structure which comprises a cavity and a loud speaker arranged inside the cavity, wherein, a first sound cavity, a second sound cavity and a third sound cavity are formed in the cavity; the first sound cavity comprises a front sound cavity and a back sound cavity receiving the loud speaker; the back sound cavity is communicated with the second sound cavity to form a back acoustic chamber, while the front sound cavity is communicated with the third sound cavity to form a front acoustic chamber. The sound box structure can furthest enlarge the volume of the cavity to improve the phonation quality of the loud speaker. The invention also relates to a mobile electronic device (such as a mobile phone) adopting the sound box structure.

Description

Loudspeaker box structure and adopt the mobile electronic device of this loudspeaker box structure
Technical field
The present invention relates to a kind of mobile electronic device, particularly relates to a kind of loudspeaker box structure of mobile electronic device.
Background technology
Fast development along with information industry, mobile electronic device heightens such as the demand of mobile phone, mobile phone is as people's communication tool, its basic functions is the transmission voice signal, be the transmission voice signal, need to adopt sound-electricity conversion device that voice signal is converted to electric signal, perhaps electric signal is converted to structural vibration to produce sound, wherein the loud speaker that the most extensively is suitable for promptly is to be used for electric signal is converted to structural vibration to produce sound.
The sounding quality of mobile phone is except relevant with loud speaker itself, the loudspeaker box structure outer with being located at loud speaker is also very relevant, the volume of the loudspeaker box structure middle pitch chamber cavity of mobile phone is big more, air in its cavity is also more little to the damping action of the sound that loud speaker sends, can reduce the lowest resonant frequency of loud speaker like this, thereby can reach LF-response effect preferably to promote the sounding quality of mobile phone, yet the volume increase of sound chamber cavity also correspondingly makes the volume of mobile phone increase, this obviously disagrees to the trend that short and small frivolous direction develops with mobile phone, therefore how not to increase its volume and size again in the sounding quality of lifting mobile phone and has seemed most important.
Summary of the invention
In view of this, be necessary to provide a kind of have loudspeaker box structure that promotes the sounding quality and the mobile electronic device that adopts this loudspeaker box structure.
A kind of loudspeaker box structure, comprise cavity and place the interior loud speaker of this cavity, be formed with the first sound chamber, the second sound chamber and the 3rd sound chamber in this cavity, this first sound chamber comprises preceding sound chamber and accommodates the back sound chamber of this loud speaker, this sound chamber, back is communicated with the second sound chamber to form a back tone chamber, and this preceding sound chamber is communicated with the 3rd sound chamber with tone chamber before forming.
A kind of mobile electronic device, comprise a housing, be provided with loudspeaker box structure and built-in antenna in this housing, the circuit board that this loudspeaker box structure comprises cavity, places the loud speaker in this cavity and be electrically connected with loud speaker, this circuit board and built-in antenna are located at the both sides of this cavity respectively, be formed with the first sound chamber, the second sound chamber and the 3rd sound chamber in this cavity, this first sound chamber comprises preceding sound chamber and accommodates the back sound chamber of this loud speaker, this sound chamber, back is communicated with the second sound chamber to form a back tone chamber, and this preceding sound chamber is communicated with the 3rd sound chamber with tone chamber before forming.
Compared with prior art, form separate forward and backward tone chamber structure in the above-mentioned loudspeaker box structure, the acoustical signal that loud speaker sends enters this forward and backward tone chamber respectively and produces resonance, not only form the peculiar resonance effects of mobile phone, but also the volume in the loudspeaker box structure is fully utilized, under the prerequisite of volume that does not increase mobile phone and size, the volume of enlarged cavities to greatest extent, thereby reduce the lowest resonant frequency of loud speaker, improve the LF-response effect of loud speaker, and then promote the sounding quality of mobile phone.
Description of drawings
Fig. 1 is the wherein structural representation of an embodiment of mobile electronic device of the present invention (is example with the mobile phone).
Fig. 2 is the interior loudspeaker box structure of Fig. 1 mobile phone and the three-dimensional exploded view at built-in antenna first visual angle.
Fig. 3 is the three-dimensional exploded view at loudspeaker box structure shown in Figure 2 and built-in antenna second visual angle.
Fig. 4 is the structural representation of the cavity in the loudspeaker box structure shown in Figure 2.
Fig. 5 is the part assembly drawing of loudspeaker box structure shown in Figure 2 and built-in antenna.
Embodiment
With reference to the accompanying drawings, be described further in conjunction with the embodiments.
Figure 1 shows that among the wherein embodiment of mobile electronic device of the present invention with mobile phone 1 to be the structural representation of example, this mobile phone 1 comprises a housing 10, this housing 10 is one roughly to be rectangular-shaped structure, the bottom section of this housing 10 forms a key zone 11, middle section forms a viewing area 12, the top then forms an articulating region 13, the inside of this housing 10 is provided with loudspeaker box structure 20 and built-in antenna 29 (please refer to Fig. 2), and the articulating region 13 of these loudspeaker box structure 20 corresponding mobile phones 1 is provided with.This mobile electronic device also can be personal digital assistant (PDA) and waits other to need the electronic equipment of built-in speaker structure 20 except being the mobile phone 1.
Extremely shown in Figure 5 as Fig. 2, this loudspeaker box structure 20 comprises a cavity 21, place a loud speaker 25 in this cavity 21, be located at a circuit board 28 of these cavity 21 1 sides and be located in a framework 27 between this cavity 21 and the circuit board 28, and this built-in antenna 29 is located at the opposite side of cavity 21.
This built-in antenna 29 comprises a tabular body 290 and two buckle arms 298 that extended to form to cavity 21 by the edge of this body 290, the end of each buckle arm 298 is provided with a salient point 291, be used for antenna 29 is electrically connected with circuit board 28, this body 290 is provided with some location holes 299, to be used for that antenna 29 is positioned this cavity 21.
This loud speaker 25 is contained in this cavity 21, this loud speaker 25 is provided with some preceding senders 251 (please refer to Fig. 3) near the one side of built-in antenna 29, the another side relative with this face is provided with some backs sender 252, this loud speaker 25 is electrically connected to circuit board 28, be used for the electric signal of circuit board 28 inputs is converted into signal, and by preceding sender 251 and the back sender 252 spread out of, these loud speaker 25 sides are provided with a lug 250, so that this loud speaker 25 is positioned in this cavity 21.
This cavity 21 is a semiclosed housing, it is surrounded by base plate 211 (please refer to Fig. 3) and side plate 212 and forms and form a receiving space in this semi-enclosed housing, be provided with the ringwall 221 that the side opened to semi-enclosed housing by base plate 211 is extended in this receiving space, this ringwall 221 is a tubular, the first sound chamber 220 of loud speaker 25 is accommodated in formation one in it, also be provided with two dividing plates 231 that ringwall 221 is connected with the side plate 212 of cavity 21 in this receiving space, between the side plate 212 of these 220 peripheries, first sound chamber and cavity 21, to form one second sound chamber 230 and one the 3rd sound chamber 240, certainly, when the part of this ringwall 221 contacts with the side plate 212 of cavity 21, then only need a dividing plate periphery in the first sound chamber 220 can be divided into two cavitys.
The ringwall 221 corresponding second sound chambeies 230 in this first sound chamber 220 and the part in the 3rd sound chamber 240 are respectively first and intersect the wall 233 and the second crossing wall 232, the end face coplane of the end face of this second crossing wall 232 and two dividing plates 212 and the side plate 212 of this cavity 21, on direction perpendicular to the base plate 211 of cavity 21, this first end face that intersects wall 233 is lower than the end face of the second crossing wall 232, promptly have difference in height between the end face of the end face of this first crossing wall 233 and the second crossing wall 232, this first sound chamber 220 is communicated with the second sound chamber 230 thus.
The bottom side of the ringwall 221 in this first sound chamber 220 promptly convexes with the flange 222 of a ring-type near a side of base plate 211, sound chamber 223 and sound chamber, a back 224 before this flange 222 is divided into one with the first sound chamber 220, should before the inwall in sound chamber 223 promptly intersect wall 232 places in second on the inner edge of this flange 222 and be provided with a sender 225, thereby preceding sound chamber 223 is communicated with the 3rd sound chamber 240.This sound chamber, back 224 is used to accommodate loud speaker 25, this sound chamber, back 224 is intersected wall 233 corresponding to first of the second sound chamber 230 and is provided with a groove 226, this groove 226 matches with lug 250 on loud speaker 25 sidewalls, this loud speaker 25 is positioned in the sound chamber, back 224,251 pairs of the preceding senders of this loud speaker 25 should before sound chamber 223, sender 252 is then to should sound chamber, back 224 thereafter.After this loud speaker 25 places in this rear chamber 224, preceding sound chamber 223 is spaced from each other with sound chamber, back 224, thereby sound chamber 224 and the second sound chamber, the 230 common back tone chambers that form after making, tone chambers before preceding sound chamber 223 then forms jointly with the 3rd sound chamber 240, and described forward and backward tone chamber is separate.
212 pairs of the side plates of this cavity 21 should the 3rd sound chamber 240 the position be provided with a continuant orifice 227, with should before sound chamber 223 and the 3rd sound chamber 240 formed preceding tone chamber and external environment connects.Be provided with a fixing hole 228 that runs through the base plate 211 of cavity 21 near the position of side plate 212 on the base plate 211 of this cavity 21, this fixing hole 228 roughly is square, its periphery extends upward and forms a rectangular wall 235, the end face coplane of the side plate 212 of the end face of this rectangular wall 235 and cavity 21, two buckle arms 298 of this built-in antenna 29 can be equipped in this rectangular wall 235, the base plate 211 of this cavity 21 convexes with some projections 229 (please refer to Fig. 3) towards built-in antenna 29, these projections 229 cooperate with location hole 299 on the built-in antenna 29, so that built-in antenna 29 is fixed on the base plate 211 of this cavity 21.
This framework 27 is to be made by damping materials such as rubber, glass fabrics, and this framework 27 is located on the relative open wall of this cavity 21 and this base plate 211, and is located between this cavity 21 and the circuit board 28.
This framework 27 comprises a housing 271 and is located at first inside casing 272 in this housing 271, second inside casing 273, the peripheral shape of the shape of this housing 271 and cavity 21 is roughly the same, this first inside casing 272 is attached on the rectangular wall 235 of fixing hole 228 of this cavity 21, it surrounds with housing 271 and forms one first space 274 corresponding with this fixing hole 228, the dividing plate 231 and second that this second inside casing 273 is attached at this cavity 21 intersects on the wall 232, it surrounds with housing 271 and forms one second space 276 corresponding with the 3rd sound chamber 240, and this first inside casing 272, second inside casing 273 encloses jointly with housing 271 and forms one the 3rd space 275, the back tone chamber that the 3rd space 275 forms jointly corresponding to the back sound chamber 224 and the second sound chamber 230 by the first sound chamber 220, the 3rd space 275 can make the volume of this back tone chamber enlarge, and this second space 276 can make by the preceding sound chamber 223 of the first sound chamber, 220 cavitys and the volume expansion of the 3rd sound chamber 240 common preceding tone chambers that form.
The size of housing 271, first inside casing 272 and second inside casing 273 of this framework 27 need be carried out appropriate design, increasing this second space 276 and the 3rd space 275 as much as possible, and make this framework 27 can not influence its damping effect because of the undersized of its housing 271, first inside casing 272 and second inside casing 273.
During assembling, this loud speaker 21 places in the back sound chamber 224 of this cavity 21, the preceding sound chamber 223 that 251 pairs of its preceding senders should cavity 21, and sender 252 is then to should sound chamber, back 224 thereafter; This circuit board 28 is located at the side that this cavity 21 is opened; This framework 27 is located between this circuit board 28 and the cavity 21, the contact position of this framework 27 and this circuit board 28 and cavity 21 can utilize adhesive (figure does not show) to fill bonding fully, and this framework 27 also can be filled up the space of 21 of this circuit board 28 and cavitys, thereby makes this forward and backward tone chamber form separate separately airtight relatively space respectively; This built-in antenna 29 is attached on the base plate 211 of cavity 21, location hole 299 on it cooperates with projection 229 on the base plate 211 of cavity 21, two buckle arms 298 pass the fixing hole 228 of cavity 21 and utilize buckle arm 298 outside tension force to engage with rectangular wall 235, the end of two buckle arms 298 passes first space 274 of framework 27, thereby the salient point 291 on the buckle arm 298 is connected with circuit board 28.
Form separate preceding tone chamber (preceding sound chamber 223 and the 3rd sound chamber 240) and back tone chamber (the back sound chamber 224 and the second sound chamber 230) structure in the above-mentioned loudspeaker box structure 20, loud speaker 25 sends acoustical signal by preceding sender 251 and back sender 252, enter this preceding tone chamber and back tone chamber generation resonance respectively, and be sent to the external world by the continuant orifice 227 on the side plate 212 of cavity 21, so on the one hand the volume in the loudspeaker box structure 20 is fully utilized, under the prerequisite of volume that does not increase mobile phone 1 and size, the volume of big ground enlarged cavities 21, thereby reduce the lowest resonant frequency of loud speaker 25, improve the LF-response effect of loud speaker 25, and then the sounding quality of lifting mobile phone 1, can form the peculiar resonance effects of mobile phone 1 on the other hand, can draw according to sound-vibration analysis software SYSNOISE simulation, before the above-mentioned loudspeaker box structure 20, the response frequency of back tone chamber is respectively at 2941Hz, about 3851Hz, adopt this kind loudspeaker box structure 20 mobile phone 1 sound intensity suitably and tend towards stability, and can avoid the generation of the tinkle of bells sharpening or unsweet sound phenomenon, can promote the texture and abundant sense of sound, thereby obtain good sounding quality.
In addition, established framework 27 owing to pressing from both sides in the above-mentioned loudspeaker box structure 20, make this forward and backward tone chamber form airtight relatively space respectively, can prevent that loudspeaker box structure 20 from spilling sound wave, the direct wave of avoiding this sound wave that spills and loudspeaker box structure 20 to be sent by the continuant orifice 227 of the side plate 212 of cavity 21 produces interferes, the frequency characteristic of sound is tended towards stability, promote the sounding quality of mobile phone 1; Simultaneously, this framework 27 is made by the damping material, can reduce owing to the caused loud speaker 25 of sounding of loud speaker 25 and the transmission of 28 resonance of circuit board, thereby can avoid sound to be interfered.
Moreover, because built-in antenna 29 and circuit board 28 are divided into the both sides of cavity 21, not only can make full use of the space in the above-mentioned loudspeaker box structure 20, realize good LF-response effect, can prevent that also built-in antenna 29 and circuit board 28 from electromagnetic interference taking place, thereby obtain good communication quality.

Claims (12)

1. loudspeaker box structure, comprise cavity and place the interior loud speaker of this cavity, it is characterized in that: be formed with the first sound chamber, the second sound chamber and the 3rd sound chamber in this cavity, this first sound chamber comprises preceding sound chamber and accommodates the back sound chamber of this loud speaker, this sound chamber, back is communicated with the second sound chamber to form a back tone chamber, and this preceding sound chamber is communicated with the 3rd sound chamber with tone chamber before forming.
2. loudspeaker box structure as claimed in claim 1 is characterized in that: also comprise the circuit board that is electrically connected with this loud speaker, this cavity is a semiclosed housing, and this circuit board is located at the open side of this cavity.
3. loudspeaker box structure as claimed in claim 2 is characterized in that: also comprise the framework that is located between this cavity and the circuit board, this framework is made by the damping material.
4. loudspeaker box structure as claimed in claim 3 is characterized in that: this damping material is rubber or glass fabric.
5. loudspeaker box structure as claimed in claim 3, it is characterized in that: this cavity is surrounded by base plate and side plate and form and form a receiving space in this cavity, be provided with in this receiving space by the upwardly extending ringwall of this base plate, form the described first sound chamber in this ringwall, also be provided with at least one dividing plate that this ringwall is connected with the side plate of cavity in this receiving space, to form described second sound chamber and described the 3rd sound chamber between the side plate of and cavity peripheral in the described first sound chamber.
6. loudspeaker box structure as claimed in claim 5, it is characterized in that: the part in corresponding second sound chamber of the ringwall in the described first sound chamber and the 3rd sound chamber is respectively first and intersects the wall and the second crossing wall, on direction perpendicular to the base plate of cavity, this first end face that intersects wall is lower than the end face of the second crossing wall, should be communicated with the second sound chamber in sound chamber, back thus, and this second bottom of intersecting wall is provided with sender, and sound chamber before described is communicated with the 3rd sound chamber.
7. loudspeaker box structure as claimed in claim 6, it is characterized in that: this framework comprises housing and inside casing, the shape of described housing is identical with the peripheral shape of this cavity, described inside casing intersects wall to dividing plate and second that should cavity, so that form in this framework respectively two spaces that should forward and backward tone chamber, described two spaces are communicated with to enlarge the volume of forward and backward tone chamber respectively with forward and backward tone chamber respectively.
8. mobile electronic device, comprise a housing, be provided with loudspeaker box structure and built-in antenna in this housing, this loudspeaker box structure comprises cavity, the circuit board that places the loud speaker in this cavity and be electrically connected with loud speaker, it is characterized in that: this circuit board and built-in antenna are located at the both sides of this cavity respectively, be formed with the first sound chamber in this cavity, the second sound chamber and the 3rd sound chamber, this first sound chamber comprises preceding sound chamber and accommodates the back sound chamber of this loud speaker, this sound chamber, back is communicated with the second sound chamber to form a back tone chamber, and this preceding sound chamber is communicated with the 3rd sound chamber with tone chamber before forming.
9. mobile electronic device as claimed in claim 8 is characterized in that: also comprise the framework that is located between this cavity and the circuit board, this framework is made by the damping material.
10. mobile electronic device as claimed in claim 8, it is characterized in that: this cavity is surrounded by base plate and side plate and form and form a receiving space in this cavity, be provided with in this receiving space by the upwardly extending ringwall of this base plate, form the described first sound chamber in this ringwall, also be provided with at least one dividing plate that this ringwall is connected with the side plate of cavity in this receiving space, to form described second sound chamber and described the 3rd sound chamber between the side plate of and cavity peripheral in the described first sound chamber.
11. mobile electronic device as claimed in claim 10, it is characterized in that: the part in corresponding second sound chamber of the ringwall in the described first sound chamber and the 3rd sound chamber is respectively first and intersects the wall and the second crossing wall, on direction perpendicular to the base plate of cavity, this first end face that intersects wall is lower than the end face of the second crossing wall, should be communicated with the second sound chamber in sound chamber, back thus, and this second bottom of intersecting wall is provided with sender, and sound chamber before described is communicated with the 3rd sound chamber.
12. as each described mobile electronic device of claim 8 to 11, it is characterized in that: this mobile electronic device is mobile phone or personal digital assistant.
CNA2006101573646A 2006-12-08 2006-12-08 Loudspeaker box structure and mobile electronic equipments adopting the loudspeaker box structure CN101198196A (en)

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CNA2006101573646A CN101198196A (en) 2006-12-08 2006-12-08 Loudspeaker box structure and mobile electronic equipments adopting the loudspeaker box structure

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CNA2006101573646A CN101198196A (en) 2006-12-08 2006-12-08 Loudspeaker box structure and mobile electronic equipments adopting the loudspeaker box structure

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729613A (en) * 2008-10-16 2010-06-09 英华达(上海)电子有限公司 Sound arrester of portable equipment and installation method thereof
CN101834923A (en) * 2010-03-26 2010-09-15 东莞宇龙通信科技有限公司 Method for controlling sound playing of mobile terminal and mobile terminal
CN102131135A (en) * 2011-04-29 2011-07-20 青岛海信移动通信技术股份有限公司 Sealing structure of loudspeaker and portable mobile terminal
CN102347998A (en) * 2011-06-28 2012-02-08 宇龙计算机通信科技(深圳)有限公司 Mobile terminal and sound cavity structure of speaker thereof
CN102857849A (en) * 2011-06-30 2013-01-02 宏碁股份有限公司 Miniature speaker and portable electronic device
EP2282553A3 (en) * 2009-07-27 2013-03-13 Samsung Electronics Co., Ltd. Bass sound amplifying enclosure, woofer including the same, and electronic device including the woofer
CN103067798A (en) * 2011-10-24 2013-04-24 比亚迪股份有限公司 Sound cavity structure and electronic product with same
CN103139683A (en) * 2013-01-23 2013-06-05 福兴达科技实业(深圳)有限公司 Sound chamber structure capable of laterally making sound
CN103763640A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763641A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763644A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763645A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763642A (en) * 2013-12-30 2014-04-30 刘骏涛 Micro sound box
CN103763656A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103957478A (en) * 2013-12-30 2014-07-30 刘骏涛 Minisize sound device
CN104010237A (en) * 2014-02-28 2014-08-27 刘骏涛 Miniature loudspeaker box
CN109246260A (en) * 2018-09-11 2019-01-18 Oppo广东移动通信有限公司 Mobile terminal and its housing unit

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729613A (en) * 2008-10-16 2010-06-09 英华达(上海)电子有限公司 Sound arrester of portable equipment and installation method thereof
EP2282553A3 (en) * 2009-07-27 2013-03-13 Samsung Electronics Co., Ltd. Bass sound amplifying enclosure, woofer including the same, and electronic device including the woofer
CN101834923A (en) * 2010-03-26 2010-09-15 东莞宇龙通信科技有限公司 Method for controlling sound playing of mobile terminal and mobile terminal
CN101834923B (en) * 2010-03-26 2014-10-22 东莞宇龙通信科技有限公司 Method for controlling sound playing of mobile terminal and mobile terminal
CN102131135A (en) * 2011-04-29 2011-07-20 青岛海信移动通信技术股份有限公司 Sealing structure of loudspeaker and portable mobile terminal
CN102347998A (en) * 2011-06-28 2012-02-08 宇龙计算机通信科技(深圳)有限公司 Mobile terminal and sound cavity structure of speaker thereof
CN102857849A (en) * 2011-06-30 2013-01-02 宏碁股份有限公司 Miniature speaker and portable electronic device
CN103067798A (en) * 2011-10-24 2013-04-24 比亚迪股份有限公司 Sound cavity structure and electronic product with same
CN103139683A (en) * 2013-01-23 2013-06-05 福兴达科技实业(深圳)有限公司 Sound chamber structure capable of laterally making sound
CN103139683B (en) * 2013-01-23 2017-11-17 深圳市福智软件技术有限公司 The audio cavity structure that a kind of side is spoken
CN103763644A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763645A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763642A (en) * 2013-12-30 2014-04-30 刘骏涛 Micro sound box
CN103763656A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103957478A (en) * 2013-12-30 2014-07-30 刘骏涛 Minisize sound device
CN103763641A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN103763640A (en) * 2013-12-30 2014-04-30 刘骏涛 Miniature stereo
CN104010237A (en) * 2014-02-28 2014-08-27 刘骏涛 Miniature loudspeaker box
CN109246260A (en) * 2018-09-11 2019-01-18 Oppo广东移动通信有限公司 Mobile terminal and its housing unit
CN109246260B (en) * 2018-09-11 2020-07-03 Oppo广东移动通信有限公司 Mobile terminal and shell assembly thereof

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