CN108391211A - Loud speaker - Google Patents
Loud speaker Download PDFInfo
- Publication number
- CN108391211A CN108391211A CN201810225138.XA CN201810225138A CN108391211A CN 108391211 A CN108391211 A CN 108391211A CN 201810225138 A CN201810225138 A CN 201810225138A CN 108391211 A CN108391211 A CN 108391211A
- Authority
- CN
- China
- Prior art keywords
- voice coil
- vibrating diaphragm
- loud speaker
- audio
- shell
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- 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
- 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 invention discloses a kind of loud speakers, including：The inner cavity surrounded by shell is equipped with the first vibrating diaphragm and the second vibrating diaphragm of face setting in the inner cavity；Wherein, it is fixed with the first voice coil on first vibrating diaphragm, the second voice coil for coordinating with the first voice coil is fixed on second vibrating diaphragm, first voice coil and second voice coil are configured to be passed through different electric signals, so as to generate attraction or repulsive force between the first voice coil and the second voice coil.The loud speaker saves the inner space of loud speaker, simplifies loud speaker manufacturing process, alleviate loudspeaker quality, realize the miniaturization of electronic product it is not necessary that magnetic circuit system is arranged.
Description
Technical field
The present invention relates to electroacoustic fields, more particularly, to a kind of loud speaker.
Background technology
Loud speaker is the important acoustic element in electronic equipment, is a kind of energy converter electric signal being changed into acoustical signal
Part.
In the prior art, coil-moving speaker may include：Shell and setting vibrational system inside the shell, magnetic circuit system
System.Wherein, magnetic circuit system quality is big, occupies most of space of loud speaker, and the assembly process is complicated, is unfavorable for using the moving-coil
The miniaturization of electronic products of formula loud speaker.
Invention content
It is an object of the present invention to provide a kind of loud speakers.
According to the first aspect of the invention, a kind of loud speaker is provided, including：The inner cavity surrounded by shell, described interior
The first vibrating diaphragm and the second vibrating diaphragm of face setting are equipped in chamber；Wherein, it is fixed with the first voice coil on first vibrating diaphragm, described
The second voice coil for coordinating with the first voice coil is fixed on two vibrating diaphragms, first voice coil and second voice coil are configured as
Different electric signals is each led into, so as to generate attraction or repulsive force between the first voice coil and the second voice coil.
Optionally, first voice coil and second voice coil are configured as：When being passed through direct current audio-frequency electric in the first voice coil
When signal, AC audio electric signal is passed through in the second voice coil；Or, when being passed through AC audio electric signal in the first voice coil, second
Direct current audio electrical signal is passed through in voice coil.
Optionally, further include：For the audio signal input terminal of input AC audio electrical signal, and for that will input
AC audio electric signal be converted into the modulates audio signals unit of direct current audio electrical signal；
Wherein,
The modulates audio signals unit is connect with first voice coil and the audio signal input terminal respectively；It is described
Second voice coil is directly connect with the audio signal input terminal；
Or, the modulates audio signals unit is connect with second voice coil and the audio signal input terminal respectively；
First voice coil is directly connect with the audio signal input terminal.
Optionally, the first cavity, second vibrating diaphragm and the shell are formed between first vibrating diaphragm and the shell
Between form the second cavity；Third cavity is formed between first vibrating diaphragm, second vibrating diaphragm；The shell is equipped with connection
First cavity goes out acoustic aperture with extraneous first；And it is provided with the second cavity of connection and goes out acoustic aperture with extraneous second.
Optionally, described first goes out acoustic aperture and described second and goes out on the side wall of the same side that acoustic aperture is located at the shell.
Optionally, described first goes out acoustic aperture and described second and goes out acoustic aperture and be located on the opposite both sides side wall of the shell.
Optionally, it is additionally provided on the housing and is connected to the third cavity and extraneous relief hole.
Optionally, first voice coil and second voice coil are to be generally aligned in the same plane interior spiral coil.
Optionally, first voice coil is fitted in the top dome portion of first vibrating diaphragm, and second voice coil is fitted in described
The top dome portion of second vibrating diaphragm.
Optionally, first voice coil and second voice coil are tubular structure, and first voice coil and described the
Two voice coils are set-located.
According to one embodiment of the disclosure, sounding can be realized in the magnetic circuit system it is not necessary that traditional structure complexity is arranged, section
The inner space for having saved loud speaker simplifies loud speaker manufacturing process, alleviates loudspeaker quality, realizes the small of electronic product
Type.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the structural schematic diagram of loud speaker provided in an embodiment of the present invention.
Fig. 2 is AC audio electric signal schematic diagram provided in an embodiment of the present invention.
Fig. 3 is direct current audio electrical signal schematic diagram provided in an embodiment of the present invention.
Fig. 4 is the circuit diagram of loud speaker provided in an embodiment of the present invention.
Fig. 5 is the structural schematic diagram of another loud speaker provided in an embodiment of the present invention.
Reference sign：
1- shells；The first vibrating diaphragms of 2-；The second vibrating diaphragms of 3-；The first voice coils of 4-；The second voice coils of 5-；6- first goes out acoustic aperture；7-
Two go out acoustic aperture；The first cavitys of 8-；The second cavitys of 9-；10- third cavitys；100- electronic product output ends；101- audio signals are defeated
Go out circuit；200- loud speakers end；201- audio signal input terminals；202- modulates audio signals units.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
The present invention provides a kind of loud speaker, and Fig. 1 is the structural schematic diagram of loud speaker provided in an embodiment of the present invention.Such as Fig. 1
Shown in loud speaker, including：The inner cavity surrounded by shell 1 is equipped with the first vibrating diaphragm 2 and the second vibrating diaphragm of face setting in the lumen
3；Wherein, it is fixed with the first voice coil 4 on the first vibrating diaphragm 2, the second sound for coordinating with the first voice coil is fixed on the second vibrating diaphragm 3
Circle 5, the first voice coil 4 and the second voice coil 5 are configured to be passed through different electric signals, so that the first voice coil 4 and the second voice coil 5
Between generate attraction or repulsive force.
Specifically, to reduce the size of coil-moving speaker, magnetic circuit system is can remove, using raising one's voice for double vibrational systems
Device, wherein each vibrational system for example may include：Vibrating diaphragm and voice coil, voice coil can be fixed on the bottom of vibrating diaphragm.Double vibrational systems
Loud speaker, two vibrating diaphragms can be oppositely arranged, so that two voice coils are also just opposite.Wherein, solenoid is when being powered
Magnetic field is will produce, voice coil is similar when being powered.When being passed through electric signal in two voice coils, uniform magnetic will produce inside voice coil
.If two voice coils are passed through the identical electric current in direction simultaneously, under the action of Ampere force, two voice coils can move toward one another；If two
When being passed through the opposite electric current in direction in a voice coil simultaneously, under the action of Ampere force, two voice coils can move round about, by
It is fixed on vibrating diaphragm in voice coil, the movement of voice coil can drive vibrating diaphragm to shake, and be made a sound so as to instigate the vibrations of two vibrating diaphragms.
Sounding can be realized in loud speaker provided in this embodiment, the magnetic circuit system it is not necessary that traditional structure complexity is arranged, and saves
The inner space of loud speaker, simplifies loud speaker manufacturing process, alleviates loudspeaker quality, realize the small-sized of electronic product
Change.
Such as in a specific embodiment of the invention, the first voice coil 4 and the second voice coil 5 are configured as：When first
When being passed through direct current audio electrical signal in voice coil 4, AC audio electric signal is passed through in the second voice coil 5；Or, when leading in the first voice coil 4
When entering AC audio electric signal, direct current audio electrical signal is passed through in the second voice coil 5.
Specifically, different electric signals can be passed through into the first voice coil 4 and the second voice coil 5 simultaneously, Fig. 2 is that the present invention is implemented
The AC audio electric signal schematic diagram that example provides.Fig. 3 is direct current audio electrical signal schematic diagram provided in an embodiment of the present invention.Its
In, in Fig. 2 and Fig. 3, abscissa indicates that time, ordinate indicate electric current.Audio electrical signal is usually alternating current as shown in Figure 2
Signal.If directly inputting identical audio electrical signal into the first voice coil 4 and the second voice coil 5, current direction one in two voice coils
It is straight identical, it can make two voice coils that can only move toward one another.To make two voice coils instigate vibrating diaphragm sounding, can to audio electrical signal into
Row adjustment, the direct current audio electrical signal after adjustment for example can be pulsating direct current electric signals as shown in Figure 3.Pulsating direct current electric current
Direction is constant, but the size of electric current has periodic variation, which for example can pass through all-wave by alternating current
It is obtained after rectification.
When using the loud speaker, AC audio electric signal can be first passed through into the first voice coil 4, and simultaneously to the second voice coil 5
Inside it is passed through pulsating direct current audio electrical signal；Or pulsating direct current audio electrical signal is passed through into the first voice coil 4, and simultaneously to second
AC audio electric signal is passed through in voice coil 5；In this way, it is continuous to be passed through current direction in the voice coil of AC audio electric signal
Change, magnetic direction also changes therewith；And to be passed through current direction in the voice coil of direct current audio electrical signal and remain unchanged, magnetic
Field direction also remains unchanged；Therefore, it will deposit in one cycle, two voice coils first move toward one another, then move round about,
It shakes and makes a sound to instigate vibrating diaphragm.
Loud speaker provided in this embodiment is passed through different electric signals into the first voice coil 4 and the second voice coil 5 respectively, makes
Generation attraction or repulsive force between the first voice coil 4 and the second voice coil 5 is obtained to save and raise to instigate two vibrating diaphragm sounding
The inner space of sound device, while improving the sound performance of loud speaker.
Fig. 4 is the circuit diagram of loud speaker provided in an embodiment of the present invention.As shown in figure 4, the loud speaker may also include：Audio
Signal input terminal 201 and modulates audio signals unit 202, audio signal input terminal 201 are used for input AC voiceband telecommunication
Number；Modulates audio signals unit 202 is used to convert the AC audio electric signal of input to direct current audio electrical signal；In the present invention
One embodiment in, as shown in figure 4, modulates audio signals unit 202 respectively with the second voice coil 5 and audio signal input terminal
201 connections；First voice coil 4 is directly connect with audio signal input terminal 201；In another embodiment of the present invention, may be used also
So that modulates audio signals unit 202 is connect with the first voice coil 4 and audio signal input terminal 201 respectively；And make second
Voice coil 5 is directly connect with audio signal input terminal 201.The set-up mode of two embodiments as above can be optionally first, the present invention
This is not restricted.
Specifically, by taking existing electronic product as an example, part related with loud speaker can be abstracted as electricity in electronic product
Sub- output of products end 100 and loud speaker end 200, loud speaker end 200 include that loud speaker and the audio signal being connect with loud speaker are defeated
Enter terminal 201, electronic product output end 100 includes audio signal output circuit 101, audio signal output circuit 101 and audio
Signal input terminal 201 is connected to export audio electrical signal to loud speaker.Wherein, loud speaker includes the first voice coil 4 and the second sound
Circle 5, audio electrical signal is applied on the first voice coil 4 and the second voice coil 5.In addition to this, loud speaker end 200 further include respectively with sound
Enclose the modulates audio signals unit 202 that (the first voice coil 4 or the second voice coil 5) and audio signal input terminal 201 connect, audio
The AC audio electric signal that signal output apparatus 101 exports exports after the modulation of modulates audio signals unit 202 to the first sound
Circle 4 or the second voice coil 5.Wherein, modulation refers to adjusting the direction of AC audio electric signal.
For example, modulates audio signals unit 202 for example can be full-wave rectifying circuit.Full-wave rectifying circuit is available
Exchange is converted into the circuit of single direction electric current by the unilateal conduction performance of semiconductor diode.Use the full-wave rectifying circuit
When, in half period, electric current flows through a rectifying device, and in another half cycle, electric current flows through second rectifying device,
And the connection of two rectifying devices can flow through their electric current and flow through load with same direction.Rectifying device for example can be
Crystal diode.Two half-waves of exchange are utilized in full-wave rectification, improve the efficiency of rectifier, and rectified current is made to be easy to
Smoothly.
Loud speaker provided in this embodiment, by the way that modulates audio signals unit 202 is arranged, you can audio signal is exported into electricity
The AC audio electric signal that road 101 exports is converted into direct current audio electrical signal, makes that it only has direction change and size is constant so that
Evenly, and it is not necessary that other direct current audio electrical signal input circuit is arranged, manufacturing process is simpler for the induced field of generation.
Meanwhile rectification modulation, modulation efficiency higher are carried out to audio electrical signal using full-wave rectifying circuit.
As shown in Figure 1, forming the first cavity 8 between the first vibrating diaphragm 2 and shell 1, formed between the second vibrating diaphragm 3 and shell 1
Second cavity 9；Third cavity 10 is formd between first vibrating diaphragm 2, the second vibrating diaphragm 3；Shell 1 be equipped with the first cavity 8 of connection with
Extraneous first goes out acoustic aperture 6；And it is provided with the second cavity of connection 9 and goes out acoustic aperture 7 with extraneous second.
Specifically, inner cavity is divided into three parts by the first vibrating diaphragm 2 and the second vibrating diaphragm 3, wherein the first vibrating diaphragm 2 and face first
Forming the first cavity 8 between the shell 1 of vibrating diaphragm 2, i.e. the first cavity 8 is located on the first vibrating diaphragm 2 towards the side of shell 1, and first
Cavity 8 goes out acoustic aperture 6 with first and is connected to, and is transferred to outside to allow the sound that the first vibrating diaphragm 2 generates to go out acoustic aperture 6 by first
Boundary.The operatic tunes before forming second between second vibrating diaphragm 3 and shell 1, i.e., the operatic tunes is located at the second vibrating diaphragm 3 towards 1 side of shell before second,
The sound that second vibrating diaphragm 3 generates is connected to by the intercommunicating pore on shell 1 with the operatic tunes before second, and the operatic tunes and second goes out acoustic aperture before second
7 are connected, to make the sound that the second vibrating diaphragm 3 generates can be for transmission to the external world.Before first cavity 8 and second cavity 9 are
The operatic tunes, the preceding operatic tunes include the two parts being provided separately, and correspond to two vibrating diaphragms setting of loud speaker respectively；First vibrating diaphragm 2, second shake
Third cavity 10 is collectively formed with shell 1 in film 3, and third cavity 10 is the rear operatic tunes, and the rear operatic tunes is closed structure.
Loud speaker provided in this embodiment, compared with traditional structure, the Double-vibrating-diaspeaker speaker of this structure, have respectively with
First vibrating diaphragm 2 and 3 corresponding two preceding operatic tunes of the second vibrating diaphragm and go out acoustic aperture, so as to the sound for making full use of two vibrating diaphragms to generate
Sound improves the acoustical behavior of the structure of loudspeaker.
As shown in Figure 1, first goes out acoustic aperture 6 and second and goes out acoustic aperture 7 and be located on the upper and lower end face of shell 1.
Fig. 5 is the structural schematic diagram of another loud speaker provided in an embodiment of the present invention.As shown in figure 5, first goes out acoustic aperture 6
Go out acoustic aperture 7 with second to may be additionally located on the side of shell 1.
Above-described embodiment only lists the scheme of two kinds of acoustic aperture setting, and the invention is not limited in this regard, scene 2 acoustic aperture can be with
It is set to the front of shell 1, the i.e. surface of face the first vibrating diaphragm 2 or the second vibrating diaphragm 3 simultaneously；It can also be set to side simultaneously,
The side wall of the same side can be set to or not on the side wall of homonymy.
In addition, the space between two vibrating diaphragms forms the rear operatic tunes, in order to reduce diaphragm oscillations resistance, acoustical behavior is adjusted, also
Connection third cavity 10 and extraneous relief hole can be set on shell 1.Relief hole can connect with the cavity for having certain space
It is logical, play dilatation.
Loud speaker provided in this embodiment can make full use of two vibrating diaphragms to generate by the way that acoustic aperture, relief hole etc. is provided
Sound improves the acoustical behavior of the structure of loudspeaker.
As shown in Figure 1, the first voice coil 4 and the second voice coil 5 are to be generally aligned in the same plane interior spiral wire coil structures, and the
One voice coil 4 and the second voice coil 5 are fitted in the top dome portion of vibrating diaphragm.
Specifically, as shown in Figure 1, vibrating diaphragm may include：Positioned at the interconnecting piece at edge, centrally located top dome portion, Yi Jiwei
Ring portion between interconnecting piece and vibration section；Voice coil can be for example fixed in the top dome portion at vibrating diaphragm center so that connection is more steady
Gu.
Helical form voice coil in being generally aligned in the same plane for example can be in the outside circle circle coiling of ball top center, this knot
The voice coil of structure is smaller in vertical direction, is conducive to the size for reducing loud speaker, simultaneously because the joint face of voice coil and vibrating diaphragm
Vibrations preferably can be passed to vibrating diaphragm, improve the acoustical behavior of the structure of loudspeaker by product bigger.
In an alternative embodiment of the invention, the first voice coil 4 and the second voice coil 5 are tubular structure, and the first voice coil 4 and
Two voice coils 5 are set-located.
Specifically, the voice coil of tubular structure for example can be that vertically a circle circle coiling is formed in vibrating diaphragm side,
And first voice coil 4 and the second voice coil 5 diameter it is different, two voice coils can be set-located so that the lateral surface of the smaller voice coil of diameter
It is opposite with the medial surface for being relatively large in diameter voice coil so that magnetic induction effect is more preferable.
Above-described embodiment only lists two different voice coil constructions, can require to carry out according to the actual performance of loud speaker
Selection, the invention is not limited in this regard.
Loud speaker provided in this embodiment is generally aligned in the same plane the voice coil of interior helical form or tubular structure by setting,
The magnetic induction face of voice coil is increased, the sound performance of loud speaker is further improved.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of loud speaker, which is characterized in that including：The inner cavity surrounded by shell is equipped with face setting in the inner cavity
First vibrating diaphragm and the second vibrating diaphragm；Wherein, it is fixed with the first voice coil on first vibrating diaphragm, is fixed with and is used on second vibrating diaphragm
With the second voice coil of the first voice coil cooperation, first voice coil and second voice coil are configured to be passed through different telecommunications
Number, so as to generate attraction or repulsive force between the first voice coil and the second voice coil.
2. loud speaker according to claim 1, which is characterized in that first voice coil and second voice coil are configured
For：When being passed through direct current audio electrical signal in the first voice coil, AC audio electric signal is passed through in the second voice coil；Or, when the first sound
When being passed through AC audio electric signal in circle, direct current audio electrical signal is passed through in the second voice coil.
3. loud speaker according to claim 2, which is characterized in that further include：Sound for input AC audio electrical signal
Frequency signal input terminal, and the audio signal tune for converting the AC audio electric signal of input to direct current audio electrical signal
Unit processed；
Wherein,
The modulates audio signals unit is connect with first voice coil and the audio signal input terminal respectively；Described second
Voice coil is directly connect with the audio signal input terminal；
Or, the modulates audio signals unit is connect with second voice coil and the audio signal input terminal respectively；It is described
First voice coil is directly connect with the audio signal input terminal.
4. loud speaker according to claim 1, it is characterised in that：First is formed between first vibrating diaphragm and the shell
Cavity forms the second cavity between second vibrating diaphragm and the shell；It is formed between first vibrating diaphragm, second vibrating diaphragm
Third cavity；The shell is equipped with the first cavity of connection and goes out acoustic aperture with extraneous first；And it is provided with the second cavity of connection
Go out acoustic aperture with extraneous second.
5. loud speaker according to claim 4, it is characterised in that：Described first, which goes out acoustic aperture and described second, goes out acoustic aperture and is located at
On the side wall of the same side of the shell.
6. loud speaker according to claim 4, it is characterised in that：Described first, which goes out acoustic aperture and described second, goes out acoustic aperture and is located at
On the opposite both sides side wall of the shell.
7. loud speaker according to claim 4, it is characterised in that：It is additionally provided with the connection third chamber on the housing
Body and extraneous relief hole.
8. loud speaker according to claim 1, it is characterised in that：First voice coil and second voice coil are to be located at
Spiral coil in same plane.
9. loud speaker according to claim 8, it is characterised in that：First voice coil is fitted in the ball of first vibrating diaphragm
Top, second voice coil are fitted in the top dome portion of second vibrating diaphragm.
10. loud speaker according to claim 1, it is characterised in that：First voice coil and second voice coil are cylinder
Shape structure, and first voice coil is set-located with second voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225138.XA CN108391211B (en) | 2018-03-19 | 2018-03-19 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225138.XA CN108391211B (en) | 2018-03-19 | 2018-03-19 | Loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108391211A true CN108391211A (en) | 2018-08-10 |
| CN108391211B CN108391211B (en) | 2020-07-24 |
Family
ID=63067600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810225138.XA Active CN108391211B (en) | 2018-03-19 | 2018-03-19 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108391211B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982212A (en) * | 2019-03-29 | 2019-07-05 | 努比亚技术有限公司 | Loudspeaker and electronic equipment |
| CN112423207A (en) * | 2019-08-23 | 2021-02-26 | 迪芬尼声学科技股份有限公司 | Loudspeaker, and voice coil driving system and driving method of loudspeaker |
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| US7548489B1 (en) * | 2006-07-05 | 2009-06-16 | The United States Of America As Represented By The Secretary Of The Navy | Method for designing a resonant acoustic projector |
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| CN103220607A (en) * | 2013-03-20 | 2013-07-24 | 吴宗汉 | Receiver or loudspeaker of non-magnetic-steel system |
| CN105472512A (en) * | 2015-12-23 | 2016-04-06 | 福来宝电子(深圳)有限公司 | Electromagnetically powered and driven loudspeaker |
| CN205545843U (en) * | 2016-01-20 | 2016-08-31 | 天津大林电子有限公司 | No magnet loudspeaker |
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| US7548489B1 (en) * | 2006-07-05 | 2009-06-16 | The United States Of America As Represented By The Secretary Of The Navy | Method for designing a resonant acoustic projector |
| CN102045626A (en) * | 2011-01-18 | 2011-05-04 | 吴宗汉 | Moving-magnetic type ultrathin telephone receiver |
| CN103220607A (en) * | 2013-03-20 | 2013-07-24 | 吴宗汉 | Receiver or loudspeaker of non-magnetic-steel system |
| CN105472512A (en) * | 2015-12-23 | 2016-04-06 | 福来宝电子(深圳)有限公司 | Electromagnetically powered and driven loudspeaker |
| CN205545843U (en) * | 2016-01-20 | 2016-08-31 | 天津大林电子有限公司 | No magnet loudspeaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982212A (en) * | 2019-03-29 | 2019-07-05 | 努比亚技术有限公司 | Loudspeaker and electronic equipment |
| CN112423207A (en) * | 2019-08-23 | 2021-02-26 | 迪芬尼声学科技股份有限公司 | Loudspeaker, and voice coil driving system and driving method of loudspeaker |
| CN112423207B (en) * | 2019-08-23 | 2022-08-05 | 迪芬尼声学科技股份有限公司 | Loudspeaker, and voice coil driving system and driving method of loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108391211B (en) | 2020-07-24 |
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