CN109996156A - Full-frequency vibration loudspeaker system and the electronic equipment for having this system - Google Patents
Full-frequency vibration loudspeaker system and the electronic equipment for having this system Download PDFInfo
- Publication number
- CN109996156A CN109996156A CN201810003579.5A CN201810003579A CN109996156A CN 109996156 A CN109996156 A CN 109996156A CN 201810003579 A CN201810003579 A CN 201810003579A CN 109996156 A CN109996156 A CN 109996156A
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- Prior art keywords
- magnetic conduction
- vibrating diaphragm
- magnet
- voice coil
- magnetic
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention relates to a kind of Full-frequency vibration loudspeaker system and has an electronic equipment of this system.The Full-frequency vibration loudspeaker system includes shell, the first magnet assembly, the second magnet assembly, vibrating diaphragm, elastic slice and voice coil, and shell includes shell and lid, and the first magnet assembly, first magnet assembly includes the first magnetic conduction iron, the first magnet and the first magnetic conduction sheet；The end of first magnet and the end of first magnetic conduction sheet form the first magnetic gap with the first magnetic conduction iron jointly；The vibrating diaphragm is located at the side of first magnetic conduction sheet, first vibrating diaphragm has multiple, including the first vibrating diaphragm and the second vibrating diaphragm, and first vibrating diaphragm and second vibrating diaphragm interval are arranged, first vibrating diaphragm is installed on the mounting rack, and second vibrating diaphragm is installed on the shell shell；The elastic slice is located at the side of second vibrating diaphragm.The Hz-KHz of Full-frequency vibration loudspeaker system of the invention is wide and takes into account high tone quality and vibrating function.
Description
Technical field
The present invention relates to microphone device technical fields, more particularly to Full-frequency vibration loudspeaker system and have this system
Electronic equipment.
Background technique
Loudspeaker is a kind of energy transducer for electric signal being changed into acoustical signal, the shadow of the performance superiority and inferiority of loudspeaker to sound quality
Sound is most important.Traditional loudspeaker includes magnetism loop feature and oscillating component, is returned by the way that voice coil is hung on magnetism
In the magnetic field on road, when the voice coil input tone currents, voice coil will be generated vibration by the excitation in place magnetic field, and voice coil pushes
Vibrating basin drives air to generate vibration, and then makes a sound.
But due to resonance of the physical characteristic of conventional loudspeakers itself and speaker inner air etc., for not
The audio signal of same frequency has different frequency response curves, usually all can rapid attenuation for high and low frequency；And
The biggish loudspeaker of volume has biggish vibrating membrane, it is difficult to carry out vibration at high speed, therefore be difficult to issue the sound of high frequency；And volume
Lesser loudspeaker is then generally difficult to issue the sound of low frequency because the large quantity of air inside the speaker can not be pushed.And
Since the limitation of its structure causes loudspeaker to have apparent diaphagras in middle and high frequency range.Therefore, traditional loudspeaker can not
Has wider Hz-KHz.
In addition, the loudspeaker of transmission cannot be considered in terms of sound quality and vibrating function, interfere with each other, cause to generate polarization and makes an uproar
Sound, acoustical quality are poor.
Summary of the invention
Based on this, it is necessary to it is wide and take into account the Full-frequency vibration loudspeaker of high tone quality and vibrating function to provide a kind of Hz-KHz
System and the electronic equipment for having this system.
A kind of Full-frequency vibration loudspeaker system, comprising:
Shell, the shell is interior to be equipped with mounting rack, and described may include shell and lid；
First magnet assembly, first magnet assembly include the first magnetic conduction iron, the first magnet and the first magnetic conduction sheet；Described first
Magnetic conduction iron is installed on the mounting rack, and the side of the first magnetic conduction iron is provided with first magnet, first magnet
Side is provided with the first magnetic conduction sheet；The one end of the one end of first magnet and first magnetic conduction sheet jointly with it is described
First magnetic conduction iron forms the first magnetic gap；
Second magnet assembly, second magnet assembly include the second magnetic conduction iron, the second magnet and the second magnetic conduction sheet；Described second
Magnetic conduction iron is installed on the mounting rack, and second magnet is located at the other side of first magnetizer, second magnet with
First magnet is oppositely arranged, and the side of second magnet is provided with the second magnetic conduction sheet；The one end of second magnet
And the one end of second magnetic conduction sheet forms the second magnetic gap with the second magnetic conduction iron jointly；
Vibrating diaphragm, the vibrating diaphragm are located at the side of first magnetic conduction sheet, and first vibrating diaphragm has multiple, including the first vibrating diaphragm
With the second vibrating diaphragm, first vibrating diaphragm and second vibrating diaphragm interval are arranged, and first vibrating diaphragm is installed on the mounting rack, institute
It states the second vibrating diaphragm and is installed on the shell shell；
Elastic slice, the elastic slice is located at the side of second vibrating diaphragm, and the elastic slice is installed on the shell；
Voice coil, the voice coil have multiple, including the first voice coil and the second voice coil；One end of first voice coil is installed on described
The other end of one vibrating diaphragm, first voice coil is located at first magnetic gap；One end of second voice coil is installed on the lid,
The other end of second voice coil is located at second magnetic gap.
The voice coil further includes third voice coil in one of the embodiments, the other end of first magnet and
The other end of first magnetic conduction sheet forms third magnetic gap, one end peace of the third voice coil with the first magnetic conduction iron jointly
Loaded on first vibrating diaphragm, the other end of the third voice coil is located at the third magnetic gap.
The voice coil further includes the 4th voice coil in one of the embodiments, the other end of second magnet and
The other end of second magnetic conduction sheet forms the 4th magnetic gap with the second magnetic conduction iron jointly, and one end of the 4th voice coil is installed on
The other end of the lid, the 4th voice coil is located at the 4th magnetic gap.
First vibrating diaphragm and second vibrating diaphragm are provided with protrusion in one of the embodiments,.
The protrusion is taper or circle in one of the embodiments,.
First magnet is identical with the length of first magnetic conduction sheet in one of the embodiments, second magnetic
Iron is identical with the length of second magnetic conduction sheet.
The length of first magnet is greater than the length of second magnet in one of the embodiments,.
The first magnetic conduction iron is U-shaped magnetic conduction iron in one of the embodiments,.
Multiple sound outlet holes are offered on the lid in one of the embodiments,.
Full-frequency vibration loudspeaker system of the invention includes shell, the first magnet assembly, the second magnet assembly, vibrating diaphragm, bullet
Piece and voice coil, shell include shell and lid.First voice coil, the second voice coil are right by the effect after alternating current by magnetic field force
Vibrating diaphragm and lid should be driven to vibrate.First voice coil, the first magnet assembly and the first vibrating diaphragm composition boombox are for main
Sounding, while being vibrated up and down by lid vibratory drive boombox, i.e., it is vibrated as vibrating body, the vibration of generation passes through bullet
Piece is transmitted to shell, and then has vibrating effect.And drive boombox to vibrate as supporting point by upper cover, it can
Keep vibrating effect preferable.In addition, being able to drive its second vibrating diaphragm vibration between shell when boombox is as vibrating body
It is dynamic, by the combination of the second vibrating diaphragm and the first vibrating diaphragm, high, normal, basic frequency sound when broadcasting can be taken into account, there is wider frequency response model
It encloses, and sound quality is preferable, reaches high tone quality standard, bring better hearing enjoying to user.
Therefore, the Hz-KHz of Full-frequency vibration loudspeaker system of the invention is wide and takes into account high tone quality and vibrating function.
In addition, there is a need to provide a kind of electronic equipment.
The electronic equipment includes Full-frequency vibration loudspeaker system described in any of the above embodiments.
The electronic equipment includes being not limited to computer, display class image documentation equipment stereo set or game station.Make
With the Hz-KHz of the electronic equipment of the Full-frequency vibration loudspeaker system is wide, sound quality is preferable and can take into account vibrating effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the Full-frequency vibration loudspeaker system of an embodiment；
Fig. 2 is the A-A sectional view of the Full-frequency vibration loudspeaker system of embodiment as shown in Figure 1.
The reference numerals are as follows:
10. Full-frequency vibration loudspeaker system；100. shell, 110. lids, 111. sound outlet holes, 120. shells；200. mounting rack；
300. first magnet assemblies, 310. first magnetic conduction iron, 320. first magnet, 330. first magnetic conduction sheets；400. second magnet assemblies,
410. second magnetic conduction iron, 420. second magnet, 430. second magnetic conduction sheets；500. vibrating diaphragms, 510. first vibrating diaphragms, 520. second vibrations
Film；600. elastic slice；710. first voice coils, 720. second voice coils, 730. third voice coils, 740. the 4th voice coils；810. first wiring
Plate, 820. second terminal plates.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below to protect
The scope of the present invention of shield, but it is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
In the description of the present invention, it is to be understood that, indicating position or the term of positional relationship are based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the equipment of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Directly contacted including the first and second features, also may include the first and second features be not direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right above sign and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of first feature horizontal height
Less than second feature.
In embodiment as depicted in figs. 1 and 2, which includes that shell 100, first is magnetic
Component 300, the second magnet assembly 400, vibrating diaphragm 500, elastic slice 600 and voice coil.
Mounting rack 200 is equipped in the shell 100, this may include shell 120 and lid 110.The shell 120 can be circle
Column structure or column structure, structure are adapted for mount to electronic equipment, do not make specific limitation.Optionally, the lid
Multiple sound outlet holes 111 are offered on body 110.By being equipped with sound outlet hole 111, sound can be preferably transferred to external environment
In.
First magnet assembly 300 includes the first magnetic conduction iron 310, the first magnet 320 and the first magnetic conduction sheet 330.This first
Magnetic conduction iron 310 is installed on the mounting rack 200, and the side of the first magnetic conduction iron 310 is provided with first magnet 320, first magnetic
The side of iron 320 is provided with the first magnetic conduction sheet 330.The end of first magnet 320 and the end of the first magnetic conduction sheet 330 are common
The first magnetic gap is formed with the first magnetic conduction iron 310.First magnetic conduction iron 310, the first magnet 320 and the first magnetic conduction sheet 330 being capable of shapes
At internal magnetic type magnetic circuit.In one embodiment, which is U-shaped magnetic conduction iron.
Second magnet assembly 400 includes the second magnetic conduction iron 410, the second magnet 420 and the second magnetic conduction sheet 430.This second
Magnetic conduction iron 410 is installed on the mounting rack 200, which is located at the other side of first magnetizer, second magnet
420 are oppositely arranged with first magnet 320, and the side of second magnet 420 is provided with the second magnetic conduction sheet 430.Second magnet
420 end and the end of the second magnetic conduction sheet 430 form the second magnetic gap with the second magnetic conduction iron 410 jointly.Second magnetic conduction iron
410, the second magnet 420 and the one or two magnetic conduction sheet are capable of forming internal magnetic type magnetic circuit.
The vibrating diaphragm 500 is located at the side of first magnetic conduction sheet 330, which has multiple, including 510 He of the first vibrating diaphragm
Second vibrating diaphragm 520, first vibrating diaphragm 510 and first vibrating diaphragm 520 interval are arranged, which is installed on the mounting rack
200, which is installed on 100 shell 120 of shell.Optionally, first vibrating diaphragm 510 and first vibrating diaphragm 520 are equal
It is provided with protrusion.
Specifically, which is taper or circle.
The elastic slice 600 is located at the side of first vibrating diaphragm 520, and the elastic slice 600 is installed on the shell 120.The elastic slice 600
It is also located at the end of the first vibrating diaphragm 510, the vibration for generating the first vibrating diaphragm 510 is transmitted to shell 120, and then period has
Vibrating effect.
The voice coil has multiple, including the first voice coil 710 and the second voice coil 720.One end of first voice coil 710 is installed on this
First vibrating diaphragm 510, the other end of first voice coil 710 are located at first magnetic gap.One end of second voice coil 720 is installed on the lid
Body 110, the other end of second voice coil 720 are located at second magnetic gap.Optionally, the first voice coil 710 is by substantially cylindrical shape
Winding bobbin on convolute coil and constitute, coil is configured in a manner of it can vibrate in magnetic the edge with flexibility
In first magnetic gap in circuit.Second voice coil 720 is also to be made of, line convolute coil on the winding bobbin of substantially cylindrical shape
Circle is configured in the second magnetic gap of magnetic loop the edge with flexibility in a manner of it can vibrate.
In one embodiment, which further includes third voice coil 730, the other end of first magnet 320 and
The other end of one magnetic conduction sheet 330 forms third magnetic gap, one end peace of the third voice coil 730 with the first magnetic conduction iron 310 jointly
Loaded on first vibrating diaphragm 510, the other end of the third voice coil 730 is located at the third magnetic gap.
In one embodiment, which further includes the 4th voice coil 740, the other end of second magnet 420 and
The other end of two magnetic conduction sheets 430 forms the 4th magnetic gap, one end peace of the 4th voice coil 740 with the second magnetic conduction iron 410 jointly
Loaded on the lid 110, the other end of the 4th voice coil 740 is located at the 4th magnetic gap.
In one embodiment, first magnet 320 is identical with the length of first magnetic conduction sheet 330, second magnet 420
It is identical with the length of second magnetic conduction sheet 430.Optionally, the length of first magnet 320 is greater than the length of second magnet 420
Degree.
Full-frequency vibration loudspeaker system 10 of the invention includes the first terminal plate 810 and the second terminal plate 820, the first wiring
Plate 810 is located at mounting blocks 200, for powering for the first magnet assembly 300.Second terminal plate 810 is located at lid 110, for for
The power supply of second magnet assembly 400.
Full-frequency vibration loudspeaker system 10 of the invention includes shell 100, the first magnet assembly 300, the second magnet assembly
400, vibrating diaphragm 500, elastic slice 600 and voice coil, shell 100 include shell 120 and lid 110.First voice coil 710, the second voice coil 720
It is corresponding that vibrating diaphragm 500 and lid 110 is driven to vibrate by the effect after alternating current by magnetic field force.First voice coil 710, the first magnetic
Property component 300 and the first vibrating diaphragm 510 composition boombox carry out main sounding, while by 110 vibratory drive of lid
Loudspeaker up-down vibration is set, i.e., is vibrated as vibrating body, the vibration of generation is transmitted to shell 120 by elastic slice 600, and then has
Vibrating effect.And drive boombox to vibrate as supporting point by upper cover, vibrating effect can be made preferable.In addition,
When boombox is as vibrating body, it is able to drive its first vibrating diaphragm 520 vibration between shell 120, passes through the first vibrating diaphragm
520 and first vibrating diaphragm 510 combination, high, normal, basic frequency sound when broadcasting can be taken into account, there is wider Hz-KHz, and sound quality
Preferably, reach high tone quality standard, bring better hearing enjoying to user.
Therefore, the Hz-KHz of Full-frequency vibration loudspeaker system 10 of the invention is wide and takes into account high tone quality and vibrating function.
In addition, there is a need to provide a kind of electronic equipment.
The electronic equipment includes the Full-frequency vibration loudspeaker system 10 that any of the above-described is somebody's turn to do.
The electronic equipment includes being not limited to computer, display class image documentation equipment stereo set or game station.Make
With the Hz-KHz of the electronic equipment of the Full-frequency vibration loudspeaker system 10 is wide, sound quality is preferable and can take into account vibrating effect.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of Full-frequency vibration loudspeaker system characterized by comprising
Shell, the shell is interior to be equipped with mounting rack, and described may include shell and lid；
First magnet assembly, first magnet assembly include the first magnetic conduction iron, the first magnet and the first magnetic conduction sheet；Described first
Magnetic conduction iron is installed on the mounting rack, and the side of the first magnetic conduction iron is provided with first magnet, first magnet
Side is provided with the first magnetic conduction sheet；The one end of the one end of first magnet and first magnetic conduction sheet jointly with it is described
First magnetic conduction iron forms the first magnetic gap；
Second magnet assembly, second magnet assembly include the second magnetic conduction iron, the second magnet and the second magnetic conduction sheet；Described second
Magnetic conduction iron is installed on the mounting rack, and second magnet is located at the other side of first magnetizer, second magnet with
First magnet is oppositely arranged, and the side of second magnet is provided with the second magnetic conduction sheet；The one end of second magnet
And the one end of second magnetic conduction sheet forms the second magnetic gap with the second magnetic conduction iron jointly；
Vibrating diaphragm, the vibrating diaphragm are located at the side of first magnetic conduction sheet, and the vibrating diaphragm has multiple, including the first vibrating diaphragm and the second vibration
Film, first vibrating diaphragm and second vibrating diaphragm interval are arranged, and first vibrating diaphragm is installed on the mounting rack, second vibration
Film is installed on the shell；
Elastic slice, the elastic slice is located at the side of second vibrating diaphragm, and the elastic slice is installed on the shell；
Voice coil, the voice coil have multiple, including the first voice coil and the second voice coil；One end of first voice coil is installed on described
The other end of one vibrating diaphragm, first voice coil is located at first magnetic gap；One end of second voice coil is installed on the lid,
The other end of second voice coil is located at second magnetic gap.
2. Full-frequency vibration loudspeaker system according to claim 1, which is characterized in that the voice coil further includes third sound
The other end of circle, the other end of first magnet and first magnetic conduction sheet is formed with the first magnetic conduction iron jointly
Third magnetic gap, one end of the third voice coil are installed on first vibrating diaphragm, and the other end of the third voice coil is located at described the
Three magnetic gaps.
3. Full-frequency vibration loudspeaker system according to claim 1, which is characterized in that the voice coil further includes the 4th sound
The other end of circle, the other end of second magnet and second magnetic conduction sheet is formed with the second magnetic conduction iron jointly
4th magnetic gap, one end of the 4th voice coil are installed on the lid, and the other end of the 4th voice coil is located at the 4th magnetic
Gap.
4. Full-frequency vibration loudspeaker system according to claim 1-3, which is characterized in that first vibrating diaphragm and
Second vibrating diaphragm is provided with protrusion.
5. Full-frequency vibration loudspeaker system according to claim 4, which is characterized in that the protrusion is taper or circle.
6. a kind of electronic equipment, which is characterized in that including any one of the claim 1-5 Full-frequency vibration loudspeaker system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003579.5A CN109996156A (en) | 2018-01-03 | 2018-01-03 | Full-frequency vibration loudspeaker system and the electronic equipment for having this system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003579.5A CN109996156A (en) | 2018-01-03 | 2018-01-03 | Full-frequency vibration loudspeaker system and the electronic equipment for having this system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109996156A true CN109996156A (en) | 2019-07-09 |
Family
ID=67128291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810003579.5A Pending CN109996156A (en) | 2018-01-03 | 2018-01-03 | Full-frequency vibration loudspeaker system and the electronic equipment for having this system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109996156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113194390A (en) * | 2021-04-23 | 2021-07-30 | 歌尔股份有限公司 | Sound producing device |
| WO2024044920A1 (en) * | 2022-08-30 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
-
2018
- 2018-01-03 CN CN201810003579.5A patent/CN109996156A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113194390A (en) * | 2021-04-23 | 2021-07-30 | 歌尔股份有限公司 | Sound producing device |
| WO2024044920A1 (en) * | 2022-08-30 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190709 |
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| WD01 | Invention patent application deemed withdrawn after publication |