CN203167227U - Magnetic suspension sound box - Google Patents
Magnetic suspension sound box Download PDFInfo
- Publication number
- CN203167227U CN203167227U CN 201220728526 CN201220728526U CN203167227U CN 203167227 U CN203167227 U CN 203167227U CN 201220728526 CN201220728526 CN 201220728526 CN 201220728526 U CN201220728526 U CN 201220728526U CN 203167227 U CN203167227 U CN 203167227U
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- audio amplifier
- magnetic suspension
- base
- magnetic
- magnetic field
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Abstract
The utility model provides a magnetic suspension sound box. The magnetic suspension sound box includes a magnetic suspension base capable of generating a magnetic field and a sound box which is suspended above the magnetic suspension base through a magnetic force. The magnetic suspension base comprises a base PCB and a magnetic field sensor electrically connected with the base PCB; and the magnetic field sensor converts the quantity of magnetic field changes of the sound box above the magnetic suspension base in a horizontal direction and a vertical direction into electrical signals, and processes the quantity of magnetic field changes in the horizontal direction and the vertical direction, such that the sound box can return to an original balance position under the effect of a magnetic field force. According to the magnetic suspension sound box of the utility model, the magnetic field sensor senses the magnetic field changes of the sound box in the horizontal direction and the vertical direction, and converts the quantity of the magnetic field changes into the electrical signals, and processes the electrical signals, such that the sound box can be prevented from leaving the base.
Description
Technical field
The utility model relates to the audio amplifier field, relates in particular to a kind of magnetic suspension audio amplifier.
Background technology
Audio amplifier is the terminal of sound system, and its effect is that the audio frequency electric energy is converted to corresponding acoustic energy, and it is radiated the space.People's the sense of hearing is very sensitive, and the tone color of complex sound is had very strong resolving ability.Therefore, the performance of audio amplifier height plays key effect to the playing quality of a sound system.
Audio amplifier plays the acoustic short circuit of eliminating loudspeaker unit simultaneously, suppresses its acoustic resonance, widens its Hz-KHz, reduces the effect of distortion.But can influence its vibrations because audio amplifier is placed on the holder, cause both poor sound quality.
A kind of magnetic suspension player of prior art utilizes base to produce magnetic field and makes player at the effect low suspension of magnetic field force aloft.But it does not have to arrange and prevents that player breaks away from the crime prevention device of base, and base do not have position indicator, thus when be placed on player on the base night difficulty relatively.
Given this, be necessary to provide a kind of and can be convenient to the device that audio amplifier is positioned on the base and can prevents its disengaging base.
The utility model content
Main purpose of the present utility model provides a kind of magnetic suspension audio amplifier, can make it be convenient to audio amplifier more and be positioned on the base and can prevent that it breaks away from base.
For achieving the above object, the utility model provides a kind of magnetic suspension audio amplifier, comprise the magnetic suspension base that can produce magnetic field and by the audio amplifier of magnetic levitation above described magnetic suspension base, described magnetic suspension base comprises base pcb board and the magnetic field sensor that is electrically connected with described base pcb board, described magnetic field sensor with described magnetic suspension base top audio amplifier in the horizontal direction with vertical direction on the amount of changes of magnetic field be transformed into the signal of telecommunication, and it is handled, so that audio amplifier is back to weighing apparatus position, Yuanping City under the effect of magnetic field force.
Preferably, described magnetic field sensor is Hall element.
Preferably, second Hall element of changes of magnetic field on first Hall element of changes of magnetic field and the two detecting audio amplifier horizontal directions at least one detecting audio amplifier of described Hall element vertical direction, the face of this at least one first Hall element induced field and described magnetic suspension base be arranged in parallel, this at least two second Hall element is vertical the setting mutually, and the face of its induced field is all vertical with described magnetic suspension base.
Preferably, described magnetic suspension base also comprises position indicator, and described position indicator is arranged on described magnetic suspension base and places on the surface of described audio amplifier.
Preferably, described audio amplifier also comprises light guide, one side of described light guide is connected with the broadcast portion that is integrated with loud speaker and sound chamber, opposite side is connected with the suspension portion that is integrated with magnet, iron block and status indicator lamp, described loud speaker is arranged in the sound chamber, makes described broadcast portion, described suspension portion and described light guide form described audio amplifier and be sphere-like.
Preferably, described audio amplifier also comprises distance-sensor, and described status indicator lamp is connected to indicate the distance of described audio amplifier and described magnetic suspension base with described distance-sensor.
Preferably, described broadcast portion also comprises guard and upper ledge, and the both sides in described sound chamber connect described guard and described upper ledge respectively, and described guard, described loud speaker, described sound chamber be the hemisphere shape after described upper ledge is connected.
Preferably, described suspension portion also comprises: lower frame, audio amplifier pcb board, battery, iron block, magnet, audio amplifier switch and bottom, described audio amplifier switch is electrically connected with described audio amplifier pcb board, be the hemisphere shape after described lower frame and the combination of described bottom, described battery, described status indicator lamp, described audio amplifier pcb board, described iron block and described magnet are installed in the hemisphere of described lower frame and described bottom composition.
Preferably, described position indicator is LED lamp group and is electrically connected to indicate the position of described magnetic suspension base with described base pcb board that described LED lamp group is evenly distributed on the described magnetic suspension base.
Magnetic suspension audio amplifier provided by the utility model, by two first Hall elements are set, wherein the face of induced field arranges with the magnetic suspension base is vertical, in order to detect the changes of magnetic field of the horizontal direction of described audio amplifier, the face of the second Hall element induced field and magnetic suspension base be arranged in parallel, in order to detect the changes of magnetic field of the vertical direction of described audio amplifier, the amount of changeing changes of magnetic field are transformed into the signal of telecommunication, and it is handled, break away from the magnetic suspension base to prevent audio amplifier; Simultaneously at magnetic suspension base and audio amplifier indicator light is set, has made things convenient for the location of audio amplifier; In addition, audio amplifier roughly is spheroid, makes product meet modern's aesthetic conceptions more.
Description of drawings
Structural representation when Fig. 1 is the work of the utility model preferred embodiments magnetic suspension audio amplifier assembling back;
Fig. 2 is the blast structural representation of the utility model preferred embodiments audio amplifier;
Fig. 3 is the blast structural representation of the utility model preferred embodiments magnetic suspension base;
Fig. 4 for the utility model preferred embodiments Hall element schematic diagram is set.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Please refer to Fig. 1, Fig. 1 is the structural representation of the utility model preferred embodiments magnetic suspension audio amplifier assembling back work.In the present embodiment, magnetic suspension audio amplifier 10 comprises the magnetic suspension base 200 that can produce magnetic field and by the audio amplifier 100 of magnetic levitation above described magnetic suspension base 200, magnetic suspension base 200 comprises base pcb board 270 and the magnetic field sensor that is electrically connected with described base pcb board 270, magnetic field sensor is transformed into the signal of telecommunication with the amount of the changes of magnetic field of magnetic suspension base 200 tops, and it is handled, so that audio amplifier 100 is back to weighing apparatus position, Yuanping City under the effect of magnetic field force.
See Fig. 2 again, Fig. 2 is the blast structural representation of the utility model preferred embodiments audio amplifier.Audio amplifier 100 roughly is sphere-like, and its middle part is provided with light guide 120, and a side of light guide 120 is connected with broadcast portion 110, and opposite side is connected with suspension portion 190, and the three makes up the back and becomes sphere-like.Light guide 120 is transparent annular, can be luminous so that light sees through.Both sides at light guide 120 are equipped with the holding section, respectively with broadcast portion 110 and suspension portion 190 engagement connections.Broadcast portion 110 comprises guard 111, loud speaker 112, sound chamber 113 and upper ledge 114.Loud speaker 112 is placed in the sound chamber 113, and guard 111, sound chamber 113 and upper ledge 114 connect to form hemisphere successively, and is connected with suspension portion 190 by light guide 120.Suspension portion 190 comprises lower frame 130, state indicating device 140, iron block 150, magnet 160, audio amplifier switch 170 and bottom 180.Wherein, state indicating device 140 comprises status indicator lamp 141, audio amplifier pcb board 142 and battery 143, and bottom 180 comprises bottom 181 and lower bottom cover 182, and last bottom 181 is set on the lower bottom cover 182.After audio amplifier 100 was formed, status indicator lamp 141 was placed in the light guide 120.Lower frame 130, last bottom 181 and lower bottom cover 182 are combined into the shell of suspension portion 190 successively, and state indicating device 140, iron block 150 and magnet 160 are installed in the shell of suspension portion 190 successively.
Be understandable that status indicator lamp 141 can arrange the indicator light of a plurality of different colours, each color represents the distance of audio amplifier 100 and magnetic suspension base 200.In certain embodiments, distance-sensor induction audio amplifier 100 and magnetic suspension base 200 distance between the two, when both distances are far away, red status indicator lamp 141 is bright, when both distances are medium, yellow status indicator lamp 141 is bright, and the status indicator lamp 141 of green is bright when audio amplifier 100 arrives the appointed area.
See Fig. 3 again, Fig. 3 is the blast structural representation of the utility model preferred embodiments magnetic suspension base; Magnetic suspension base 200 comprises base shell 210, base 280 and the position indicator 230 that sets gradually, magnetic device 240, iron plate 250, insulation board 260, base pcb board 270 between base shell 210 and base 280, magnetic field sensor is arranged in the magnetic field of magnetic device 240 formation, in the present embodiment, magnetic field sensor is Hall element 290, and base shell 210, base 280 and be arranged on base shell 210 and base 280 between the position indicator 230, magnetic device 240, iron plate 250, insulation board 260 and base pcb board 270 concentrics that set gradually.Wherein magnetic device 240 comprise annular magnet 241, be arranged on the iron prop 242 in the magnet 241 of annular and be set in coil 243 on the iron prop 242, magnetic device 240 is fixed on the iron plate 250 to increase its steadiness.Base shell 210 tops are provided with the hole of even setting, and after magnetic suspension base 200 installed, position indicator 230 just passed the hole at base shell 210 tops, and base switch 220 is arranged on the sidepiece of base shell 210.
In the present embodiment, coil 243 is provided with 4, and is evenly setting at interval of annular.As Fig. 4, Fig. 4 is the schematic diagram that arranges of the utility model preferred embodiments Hall element.In the annular space that coil 243 surrounds, have one to be 90 ° of supports arranged in a crossed manner, this support be on cross-shaped and the support to around the fin that extends all face coil 243. Adjacent fin 294 and 295 is separately installed with one first Hall element 291 on support, and its magnetic induction face and magnetic suspension base 200 are horizontally disposed with, and is installed on the groove that cantilever tip offers the changes of magnetic field with detecting audio amplifier 100 vertical directions.Two second Hall elements 292, its magnetic induction face are the vertical changes of magnetic field that arrange with detecting audio amplifier 100 horizontal directions with magnetic suspension base 200 all.Hall element 290 is electrically connected with base pcb board 270, and Hall element 290 is transformed into the signal of telecommunication with the amount of the changes of magnetic field of magnetic suspension base 200 tops, and it is amplified and processing such as compensation.When audio amplifier 100 departed from magnetic suspension base 200, Hall element 290 was transformed into the signal of telecommunication with the magnetic field that changes and amplifies the formation offset current and impel audio amplifier 100 to return the magnetic field of former balance position with generation.In certain embodiments, when the audio amplifier 100 vertical centre point of magnetic suspension base 200 that has been subjected under the wind-force effect that fan agitates offset.At this moment, second Hall element 292 has been experienced the changes of magnetic field of the horizontal direction between audio amplifier 100 and the magnetic suspension base 200, existing side by side, soon it changes the corresponding signal of telecommunication into, amplifies the formation offset current and returns magnetic suspension base 200 with the opposite magnetic field force of the wind-force that produces and fan is agitated to impel audio amplifier 100.
Be understandable that in certain embodiments, groove is arranged at the top of base shell 210, can under situations such as outage, catch audio amplifier 100 and do not allow it drop.
Again in conjunction with Fig. 1, Fig. 2 and Fig. 3, after audio amplifier 100 and magnetic suspension base 200 assemble respectively, open the base switch 220 on the base shell 210, coil 243 energisings produce magnetic fields.The position indicator 230 at base shell 210 tops is lighted simultaneously.At this moment, open the audio amplifier switch 170 on the audio amplifier 100, and it is slowly close to magnetic suspension base 200 to hold audio amplifier 100.In certain embodiments, along with the distance between the vertical centre point of audio amplifier 100 and magnetic suspension base 200 furthers, status indicator lamp 141 becomes yellow by redness, becomes green at last.When status indicator lamp 141 becomes green, both hands slowly can be decontroled audio amplifier 100.In certain embodiments, along with furthering of vertical centre point distance between audio amplifier 100 and the magnetic suspension base 200, status indicator lamp 230 becomes Chang Liang by flicker.When status indicator lamp 230 becomes Chang Liang, both hands slowly can be decontroled audio amplifier 100.So that it also is suspended on the magnetic suspension base 200 naturally in rotation under the effect of magnetic field force.At this moment, because the setting of iron block 150, make the center of gravity of audio amplifier 100 in the middle and lower part of suspension portion 190, in the time of on audio amplifier 100 is suspended in magnetic suspension base 200 naturally, suspension portion 190 understands below broadcast portion 110, i.e. the loud speaker 112 of broadcast portion 110 up.Slowly in the close process, can experience the holder power that makes progress of continuous enhancing to magnetic suspension base 200 holding audio amplifier 100, just can suspend during apart from the about 12MM-15MM of magnetic suspension base 200 at audio amplifier 100.Owing to there are 4 to be the coils 243 that annular evenly at interval arranges in magnetic suspension base 200, when the effect that is subjected to external force when audio amplifier 100 departed from the magnetic field that coil 243 produces, the magnetic field force that can strengthen the relevant position impelled it to get back to the equilbrium position.For example, when audio amplifier 100 is subjected to external force when pressing down, first Hall element 291 can detect the changes of magnetic field of audio amplifier 100 vertical directions, form the signal of telecommunication and amplify and generate offset current, thereby produce the magnetic field force that makes progress of compensation, former balance position is returned in the effect that impels audio amplifier 100 to be subjected to power upwards.When audio amplifier 100 is subjected to external force and is offset left, second Hall element 292 can detect the changes of magnetic field of audio amplifier 100 horizontal directions, it can be taken back former balance position in the magnetic field that the offset current that produces at two coils that this side up 243 forms, thereby one of them produces thrust and greater than the thrust of another generation it is pushed back the equilbrium position.Simultaneously, Hall element 290 also can produce offset current does not break away from magnetic suspension base 200 with guarantee audio amplifier 100 vertical centre point.When audio amplifier 100 was got back to the equilbrium position, Hall element 290 detected the recovery in magnetic field and the magnetic flux of audio amplifier about in the of 100 is returned to reset condition.
The utility model is by arranging at least one first Hall element 291, wherein the face of induced field and magnetic suspension base 200 be arranged in parallel, in order to detect the changes of magnetic field of the vertical direction of described audio amplifier, the face of two second Hall elements, 292 induced fields and the 200 vertical settings of magnetic suspension base, in order to detect the changes of magnetic field of the horizontal direction of audio amplifier 100, the amount of changeing changes of magnetic field is transformed into the signal of telecommunication, and it is handled, break away from magnetic suspension base 200 to prevent audio amplifier 100; Simultaneously at magnetic suspension base 200 and audio amplifier 100 indicator light is set, has made things convenient for being positioned on the magnetic suspension base 200 of audio amplifier 100; In addition, audio amplifier 100 roughly is spheroid, makes product meet modern's aesthetic conceptions more.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. magnetic suspension audio amplifier, comprise the magnetic suspension base that can produce magnetic field and by the audio amplifier of magnetic levitation above described magnetic suspension base, it is characterized in that, described magnetic suspension base comprises base pcb board and the magnetic field sensor that is electrically connected with described base pcb board, described magnetic field sensor with described magnetic suspension base top audio amplifier in the horizontal direction with vertical direction on the amount of changes of magnetic field be transformed into the signal of telecommunication, and it is handled, so that audio amplifier is back to weighing apparatus position, Yuanping City under the effect of magnetic field force.
2. magnetic suspension audio amplifier as claimed in claim 1 is characterized in that, described magnetic field sensor is Hall element.
3. magnetic suspension audio amplifier as claimed in claim 2, it is characterized in that, second Hall element of changes of magnetic field on first Hall element of changes of magnetic field and the two detecting audio amplifier horizontal directions at least one detecting audio amplifier of described Hall element vertical direction, the face of this at least one first Hall element induced field and described magnetic suspension base be arranged in parallel, this at least two second Hall element is vertical the setting mutually, and the face of its induced field is all vertical with described magnetic suspension base.
4. magnetic suspension audio amplifier as claimed in claim 1 is characterized in that, described magnetic suspension base also comprises position indicator, and described position indicator is arranged on described magnetic suspension base and places on the surface of described audio amplifier.
5. magnetic suspension audio amplifier as claimed in claim 1, it is characterized in that, described audio amplifier also comprises light guide, one side of described light guide is connected with the broadcast portion that is integrated with loud speaker and sound chamber, opposite side is connected with the suspension portion that is integrated with magnet, iron block and status indicator lamp, described loud speaker is arranged in the sound chamber, makes described broadcast portion, described suspension portion and described light guide form described audio amplifier and be sphere-like.
6. magnetic suspension audio amplifier as claimed in claim 5 is characterized in that, described audio amplifier also comprises distance-sensor, and described status indicator lamp is connected to indicate the distance of described audio amplifier and described magnetic suspension base with described distance-sensor.
7. magnetic suspension audio amplifier as claimed in claim 5, it is characterized in that, described broadcast portion also comprises guard and upper ledge, and the both sides in described sound chamber connect described guard and described upper ledge respectively, and described guard, described loud speaker, described sound chamber be the hemisphere shape after described upper ledge is connected.
8. magnetic suspension audio amplifier as claimed in claim 5, it is characterized in that, described suspension portion also comprises: lower frame, audio amplifier pcb board, battery, iron block, magnet, audio amplifier switch and bottom, described audio amplifier switch is electrically connected with described audio amplifier pcb board, be the hemisphere shape after described lower frame and the combination of described bottom, described battery, described status indicator lamp, described audio amplifier pcb board, described iron block and described magnet are installed in the hemisphere of described lower frame and described bottom composition.
9. magnetic suspension audio amplifier as claimed in claim 4 is characterized in that, described position indicator is LED lamp group and is electrically connected to indicate the position of described magnetic suspension base with described base pcb board that described LED lamp group is evenly distributed on the described magnetic suspension base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220728526 CN203167227U (en) | 2012-12-26 | 2012-12-26 | Magnetic suspension sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220728526 CN203167227U (en) | 2012-12-26 | 2012-12-26 | Magnetic suspension sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203167227U true CN203167227U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220728526 Expired - Lifetime CN203167227U (en) | 2012-12-26 | 2012-12-26 | Magnetic suspension sound box |
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| Country | Link |
|---|---|
| CN (1) | CN203167227U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279489A (en) * | 2014-10-10 | 2015-01-14 | 宁波市镇海拓迪工业产品设计有限公司 | Multifunctional maglev lamp |
| WO2015109856A1 (en) * | 2014-01-22 | 2015-07-30 | 威立达数码科技(深圳)有限公司 | Magnetically suspended stereo |
| CN105142066A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Vibration reduction loudspeaker box system |
| CN105142048A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Loudspeaker system |
| CN105163229A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration-damping sound box |
| CN105163230A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration attenuation sound box |
| CN105245982A (en) * | 2015-09-25 | 2016-01-13 | 宁波中荣声学科技有限公司 | Vibration-reducing loudspeaker box system |
| CN106060704A (en) * | 2016-07-21 | 2016-10-26 | 太仓怡泰霖智能科技有限公司 | Magnetic suspension high definition sound installation |
| CN107871505A (en) * | 2017-11-06 | 2018-04-03 | 大连大学 | Intelligent sound action control equipment |
| CN108235177A (en) * | 2018-01-25 | 2018-06-29 | 芜湖应天光电科技有限责任公司 | A kind of multifunctional maglev sound equipment based on APP |
| CN108551614A (en) * | 2018-06-25 | 2018-09-18 | 广东工业大学 | A kind of magnetic suspension sound box |
| CN109361968A (en) * | 2018-09-29 | 2019-02-19 | 钟贵富 | Magnetic suspension sound box device with fragrance dynamic regulation |
| KR102716152B1 (en) * | 2017-02-20 | 2024-10-14 | 엘지전자 주식회사 | Module type home robot |
-
2012
- 2012-12-26 CN CN 201220728526 patent/CN203167227U/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9602901B2 (en) | 2014-01-20 | 2017-03-21 | Atake Digital Technology (Shenzhen) Co., Ltd. | Magnetic levitation audio device |
| WO2015109856A1 (en) * | 2014-01-22 | 2015-07-30 | 威立达数码科技(深圳)有限公司 | Magnetically suspended stereo |
| CN104279489A (en) * | 2014-10-10 | 2015-01-14 | 宁波市镇海拓迪工业产品设计有限公司 | Multifunctional maglev lamp |
| CN105142066B (en) * | 2015-09-25 | 2018-04-10 | 宁波中荣声学科技有限公司 | Vibration-damping speaker system |
| CN105163229B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | Vibration-damping speaker |
| CN105163230A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration attenuation sound box |
| CN105245982A (en) * | 2015-09-25 | 2016-01-13 | 宁波中荣声学科技有限公司 | Vibration-reducing loudspeaker box system |
| CN105163230B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | A kind of vibration-damping speaker |
| CN105142048A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Loudspeaker system |
| CN105142048B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | A kind of sound box system |
| CN105142066A (en) * | 2015-09-25 | 2015-12-09 | 宁波中荣声学科技有限公司 | Vibration reduction loudspeaker box system |
| CN105245982B (en) * | 2015-09-25 | 2018-08-24 | 宁波中荣声学科技有限公司 | A kind of vibration-damping speaker system |
| CN105163229A (en) * | 2015-09-25 | 2015-12-16 | 宁波中荣声学科技有限公司 | Vibration-damping sound box |
| CN106060704A (en) * | 2016-07-21 | 2016-10-26 | 太仓怡泰霖智能科技有限公司 | Magnetic suspension high definition sound installation |
| KR102716152B1 (en) * | 2017-02-20 | 2024-10-14 | 엘지전자 주식회사 | Module type home robot |
| CN107871505A (en) * | 2017-11-06 | 2018-04-03 | 大连大学 | Intelligent sound action control equipment |
| CN107871505B (en) * | 2017-11-06 | 2021-12-17 | 大连大学 | Intelligent voice action control equipment |
| CN108235177A (en) * | 2018-01-25 | 2018-06-29 | 芜湖应天光电科技有限责任公司 | A kind of multifunctional maglev sound equipment based on APP |
| CN108551614A (en) * | 2018-06-25 | 2018-09-18 | 广东工业大学 | A kind of magnetic suspension sound box |
| CN109361968A (en) * | 2018-09-29 | 2019-02-19 | 钟贵富 | Magnetic suspension sound box device with fragrance dynamic regulation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 building 15, building 234, Changxin science and Technology Industrial Zone, Gongming community office, Guangming District, Shenzhen, Guangdong Patentee after: ATAKE DIGITAL TECHNOLOGY (SHENZHEN) Co.,Ltd. Address before: Gongming Heshui town Shenzhen city Guangdong province 518000 ninth Industrial Zone fourth Patentee before: ATAKE DIGITAL TECHNOLOGY (SHENZHEN) Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |